drivers/net/fjes/fjes_regs.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  FUJITSU Extended Socket Network Device driver
   4  *  Copyright (c) 2015 FUJITSU LIMITED
   5  */
   6
   7 #ifndef FJES_REGS_H_
   8 #define FJES_REGS_H_
   9
  10 #include <linux/bitops.h>
  11
  12 #define XSCT_DEVICE_REGISTER_SIZE 0x1000
  13
  14 /* register offset */
  15 /* Information registers */
  16 #define XSCT_OWNER_EPID     0x0000  /* Owner EPID */
  17 #define XSCT_MAX_EP         0x0004  /* Maximum EP */
  18
  19 /* Device Control registers */
  20 #define XSCT_DCTL           0x0010  /* Device Control */
  21
  22 /* Command Control registers */
  23 #define XSCT_CR             0x0020  /* Command request */
  24 #define XSCT_CS             0x0024  /* Command status */
  25 #define XSCT_SHSTSAL        0x0028  /* Share status address Low */
  26 #define XSCT_SHSTSAH        0x002C  /* Share status address High */
  27
  28 #define XSCT_REQBL          0x0034  /* Request Buffer length */
  29 #define XSCT_REQBAL         0x0038  /* Request Buffer Address Low */
  30 #define XSCT_REQBAH         0x003C  /* Request Buffer Address High */
  31
  32 #define XSCT_RESPBL         0x0044  /* Response Buffer Length */
  33 #define XSCT_RESPBAL        0x0048  /* Response Buffer Address Low */
  34 #define XSCT_RESPBAH        0x004C  /* Response Buffer Address High */
  35
  36 /* Interrupt Control registers */
  37 #define XSCT_IS             0x0080  /* Interrupt status */
  38 #define XSCT_IMS            0x0084  /* Interrupt mask set */
  39 #define XSCT_IMC            0x0088  /* Interrupt mask clear */
  40 #define XSCT_IG             0x008C  /* Interrupt generator */
  41 #define XSCT_ICTL           0x0090  /* Interrupt control */
  42
  43 /* register structure */
  44 /* Information registers */
  45 union REG_OWNER_EPID {
  46         struct {
  47                 __le32 epid:16;
  48                 __le32:16;
  49         } bits;
  50         __le32 reg;
  51 };
  52
  53 union REG_MAX_EP {
  54         struct {
  55                 __le32 maxep:16;
  56                 __le32:16;
  57         } bits;
  58         __le32 reg;
  59 };
  60
  61 /* Device Control registers */
  62 union REG_DCTL {
  63         struct {
  64                 __le32 reset:1;
  65                 __le32 rsv0:15;
  66                 __le32 rsv1:16;
  67         } bits;
  68         __le32 reg;
  69 };
  70
  71 /* Command Control registers */
  72 union REG_CR {
  73         struct {
  74                 __le32 req_code:16;
  75                 __le32 err_info:14;
  76                 __le32 error:1;
  77                 __le32 req_start:1;
  78         } bits;
  79         __le32 reg;
  80 };
  81
  82 union REG_CS {
  83         struct {
  84                 __le32 req_code:16;
  85                 __le32 rsv0:14;
  86                 __le32 busy:1;
  87                 __le32 complete:1;
  88         } bits;
  89         __le32 reg;
  90 };
  91
  92 /* Interrupt Control registers */
  93 union REG_ICTL {
  94         struct {
  95                 __le32 automak:1;
  96                 __le32 rsv0:31;
  97         } bits;
  98         __le32 reg;
  99 };
 100
 101 enum REG_ICTL_MASK {
 102         REG_ICTL_MASK_INFO_UPDATE     = 1 << 20,
 103         REG_ICTL_MASK_DEV_STOP_REQ    = 1 << 19,
 104         REG_ICTL_MASK_TXRX_STOP_REQ   = 1 << 18,
 105         REG_ICTL_MASK_TXRX_STOP_DONE  = 1 << 17,
 106         REG_ICTL_MASK_RX_DATA         = 1 << 16,
 107         REG_ICTL_MASK_ALL             = GENMASK(20, 16),
 108 };
 109
 110 enum REG_IS_MASK {
 111         REG_IS_MASK_IS_ASSERT   = 1 << 31,
 112         REG_IS_MASK_EPID        = GENMASK(15, 0),
 113 };
 114
 115 struct fjes_hw;
 116
 117 u32 fjes_hw_rd32(struct fjes_hw *hw, u32 reg);
 118
 119 #define wr32(reg, val) \
 120 do { \
 121         u8 *base = hw->base; \
 122         writel((val), &base[(reg)]); \
 123 } while (0)
 124
 125 #define rd32(reg) (fjes_hw_rd32(hw, reg))
 126
 127 #endif /* FJES_REGS_H_ */