1 /* 2 * Dave DNET Ethernet Controller driver 3 * 4 * Copyright (C) 2008 Dave S.r.l. <www.dave.eu> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 #ifndef _DNET_H 11 #define _DNET_H 12 13 #define DRV_NAME "dnet" 14 #define DRV_VERSION "0.9.1" 15 #define PFX DRV_NAME ": " 16 17 /* Register access macros */ 18 #define dnet_writel(port, value, reg) \ 19 writel((value), (port)->regs + DNET_##reg) 20 #define dnet_readl(port, reg) readl((port)->regs + DNET_##reg) 21 22 /* ALL DNET FIFO REGISTERS */ 23 #define DNET_RX_LEN_FIFO 0x000 /* RX_LEN_FIFO */ 24 #define DNET_RX_DATA_FIFO 0x004 /* RX_DATA_FIFO */ 25 #define DNET_TX_LEN_FIFO 0x008 /* TX_LEN_FIFO */ 26 #define DNET_TX_DATA_FIFO 0x00C /* TX_DATA_FIFO */ 27 28 /* ALL DNET CONTROL/STATUS REGISTERS OFFSETS */ 29 #define DNET_VERCAPS 0x100 /* VERCAPS */ 30 #define DNET_INTR_SRC 0x104 /* INTR_SRC */ 31 #define DNET_INTR_ENB 0x108 /* INTR_ENB */ 32 #define DNET_RX_STATUS 0x10C /* RX_STATUS */ 33 #define DNET_TX_STATUS 0x110 /* TX_STATUS */ 34 #define DNET_RX_FRAMES_CNT 0x114 /* RX_FRAMES_CNT */ 35 #define DNET_TX_FRAMES_CNT 0x118 /* TX_FRAMES_CNT */ 36 #define DNET_RX_FIFO_TH 0x11C /* RX_FIFO_TH */ 37 #define DNET_TX_FIFO_TH 0x120 /* TX_FIFO_TH */ 38 #define DNET_SYS_CTL 0x124 /* SYS_CTL */ 39 #define DNET_PAUSE_TMR 0x128 /* PAUSE_TMR */ 40 #define DNET_RX_FIFO_WCNT 0x12C /* RX_FIFO_WCNT */ 41 #define DNET_TX_FIFO_WCNT 0x130 /* TX_FIFO_WCNT */ 42 43 /* ALL DNET MAC REGISTERS */ 44 #define DNET_MACREG_DATA 0x200 /* Mac-Reg Data */ 45 #define DNET_MACREG_ADDR 0x204 /* Mac-Reg Addr */ 46 47 /* ALL DNET RX STATISTICS COUNTERS */ 48 #define DNET_RX_PKT_IGNR_CNT 0x300 49 #define DNET_RX_LEN_CHK_ERR_CNT 0x304 50 #define DNET_RX_LNG_FRM_CNT 0x308 51 #define DNET_RX_SHRT_FRM_CNT 0x30C 52 #define DNET_RX_IPG_VIOL_CNT 0x310 53 #define DNET_RX_CRC_ERR_CNT 0x314 54 #define DNET_RX_OK_PKT_CNT 0x318 55 #define DNET_RX_CTL_FRM_CNT 0x31C 56 #define DNET_RX_PAUSE_FRM_CNT 0x320 57 #define DNET_RX_MULTICAST_CNT 0x324 58 #define DNET_RX_BROADCAST_CNT 0x328 59 #define DNET_RX_VLAN_TAG_CNT 0x32C 60 #define DNET_RX_PRE_SHRINK_CNT 0x330 61 #define DNET_RX_DRIB_NIB_CNT 0x334 62 #define DNET_RX_UNSUP_OPCD_CNT 0x338 63 #define DNET_RX_BYTE_CNT 0x33C 64 65 /* DNET TX STATISTICS COUNTERS */ 66 #define DNET_TX_UNICAST_CNT 0x400 67 #define DNET_TX_PAUSE_FRM_CNT 0x404 68 #define DNET_TX_MULTICAST_CNT 0x408 69 #define DNET_TX_BRDCAST_CNT 0x40C 70 #define DNET_TX_VLAN_TAG_CNT 0x410 71 #define DNET_TX_BAD_FCS_CNT 0x414 72 #define DNET_TX_JUMBO_CNT 0x418 73 #define DNET_TX_BYTE_CNT 0x41C 74 75 /* SOME INTERNAL MAC-CORE REGISTER */ 76 #define DNET_INTERNAL_MODE_REG 0x0 77 #define DNET_INTERNAL_RXTX_CONTROL_REG 0x2 78 #define DNET_INTERNAL_MAX_PKT_SIZE_REG 0x4 79 #define DNET_INTERNAL_IGP_REG 0x8 80 #define DNET_INTERNAL_MAC_ADDR_0_REG 0xa 81 #define DNET_INTERNAL_MAC_ADDR_1_REG 0xc 82 #define DNET_INTERNAL_MAC_ADDR_2_REG 0xe 83 #define DNET_INTERNAL_TX_RX_STS_REG 0x12 84 #define DNET_INTERNAL_GMII_MNG_CTL_REG 0x14 85 #define DNET_INTERNAL_GMII_MNG_DAT_REG 0x16 86 87 #define DNET_INTERNAL_GMII_MNG_CMD_FIN (1 << 14) 88 89 #define DNET_INTERNAL_WRITE (1 << 31) 90 91 /* MAC-CORE REGISTER FIELDS */ 92 93 /* MAC-CORE MODE REGISTER FIELDS */ 94 #define DNET_INTERNAL_MODE_GBITEN (1 << 0) 95 #define DNET_INTERNAL_MODE_FCEN (1 << 1) 96 #define DNET_INTERNAL_MODE_RXEN (1 << 2) 97 #define DNET_INTERNAL_MODE_TXEN (1 << 3) 98 99 /* MAC-CORE RXTX CONTROL REGISTER FIELDS */ 100 #define DNET_INTERNAL_RXTX_CONTROL_RXSHORTFRAME (1 << 8) 101 #define DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST (1 << 7) 102 #define DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST (1 << 4) 103 #define DNET_INTERNAL_RXTX_CONTROL_RXPAUSE (1 << 3) 104 #define DNET_INTERNAL_RXTX_CONTROL_DISTXFCS (1 << 2) 105 #define DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS (1 << 1) 106 #define DNET_INTERNAL_RXTX_CONTROL_ENPROMISC (1 << 0) 107 #define DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL (1 << 6) 108 #define DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP (1 << 5) 109 110 /* SYSTEM CONTROL REGISTER FIELDS */ 111 #define DNET_SYS_CTL_IGNORENEXTPKT (1 << 0) 112 #define DNET_SYS_CTL_SENDPAUSE (1 << 2) 113 #define DNET_SYS_CTL_RXFIFOFLUSH (1 << 3) 114 #define DNET_SYS_CTL_TXFIFOFLUSH (1 << 4) 115 116 /* TX STATUS REGISTER FIELDS */ 117 #define DNET_TX_STATUS_FIFO_ALMOST_EMPTY (1 << 2) 118 #define DNET_TX_STATUS_FIFO_ALMOST_FULL (1 << 1) 119 120 /* INTERRUPT SOURCE REGISTER FIELDS */ 121 #define DNET_INTR_SRC_TX_PKTSENT (1 << 0) 122 #define DNET_INTR_SRC_TX_FIFOAF (1 << 1) 123 #define DNET_INTR_SRC_TX_FIFOAE (1 << 2) 124 #define DNET_INTR_SRC_TX_DISCFRM (1 << 3) 125 #define DNET_INTR_SRC_TX_FIFOFULL (1 << 4) 126 #define DNET_INTR_SRC_RX_CMDFIFOAF (1 << 8) 127 #define DNET_INTR_SRC_RX_CMDFIFOFF (1 << 9) 128 #define DNET_INTR_SRC_RX_DATAFIFOFF (1 << 10) 129 #define DNET_INTR_SRC_TX_SUMMARY (1 << 16) 130 #define DNET_INTR_SRC_RX_SUMMARY (1 << 17) 131 #define DNET_INTR_SRC_PHY (1 << 19) 132 133 /* INTERRUPT ENABLE REGISTER FIELDS */ 134 #define DNET_INTR_ENB_TX_PKTSENT (1 << 0) 135 #define DNET_INTR_ENB_TX_FIFOAF (1 << 1) 136 #define DNET_INTR_ENB_TX_FIFOAE (1 << 2) 137 #define DNET_INTR_ENB_TX_DISCFRM (1 << 3) 138 #define DNET_INTR_ENB_TX_FIFOFULL (1 << 4) 139 #define DNET_INTR_ENB_RX_PKTRDY (1 << 8) 140 #define DNET_INTR_ENB_RX_FIFOAF (1 << 9) 141 #define DNET_INTR_ENB_RX_FIFOERR (1 << 10) 142 #define DNET_INTR_ENB_RX_ERROR (1 << 11) 143 #define DNET_INTR_ENB_RX_FIFOFULL (1 << 12) 144 #define DNET_INTR_ENB_RX_FIFOAE (1 << 13) 145 #define DNET_INTR_ENB_TX_SUMMARY (1 << 16) 146 #define DNET_INTR_ENB_RX_SUMMARY (1 << 17) 147 #define DNET_INTR_ENB_GLOBAL_ENABLE (1 << 18) 148 149 /* default values: 150 * almost empty = less than one full sized ethernet frame (no jumbo) inside 151 * the fifo almost full = can write less than one full sized ethernet frame 152 * (no jumbo) inside the fifo 153 */ 154 #define DNET_CFG_TX_FIFO_FULL_THRES 25 155 #define DNET_CFG_RX_FIFO_FULL_THRES 20 156 157 /* 158 * Capabilities. Used by the driver to know the capabilities that the ethernet 159 * controller inside the FPGA have. 160 */ 161 162 #define DNET_HAS_MDIO (1 << 0) 163 #define DNET_HAS_IRQ (1 << 1) 164 #define DNET_HAS_GIGABIT (1 << 2) 165 #define DNET_HAS_DMA (1 << 3) 166 167 #define DNET_HAS_MII (1 << 4) /* or GMII */ 168 #define DNET_HAS_RMII (1 << 5) /* or RGMII */ 169 170 #define DNET_CAPS_MASK 0xFFFF 171 172 #define DNET_FIFO_SIZE 1024 /* 1K x 32 bit */ 173 #define DNET_FIFO_TX_DATA_AF_TH (DNET_FIFO_SIZE - 384) /* 384 = 1536 / 4 */ 174 #define DNET_FIFO_TX_DATA_AE_TH 384 175 176 #define DNET_FIFO_RX_CMD_AF_TH (1 << 16) /* just one frame inside the FIFO */ 177 178 /* 179 * Hardware-collected statistics. 180 */ 181 struct dnet_stats { 182 u32 rx_pkt_ignr; 183 u32 rx_len_chk_err; 184 u32 rx_lng_frm; 185 u32 rx_shrt_frm; 186 u32 rx_ipg_viol; 187 u32 rx_crc_err; 188 u32 rx_ok_pkt; 189 u32 rx_ctl_frm; 190 u32 rx_pause_frm; 191 u32 rx_multicast; 192 u32 rx_broadcast; 193 u32 rx_vlan_tag; 194 u32 rx_pre_shrink; 195 u32 rx_drib_nib; 196 u32 rx_unsup_opcd; 197 u32 rx_byte; 198 u32 tx_unicast; 199 u32 tx_pause_frm; 200 u32 tx_multicast; 201 u32 tx_brdcast; 202 u32 tx_vlan_tag; 203 u32 tx_bad_fcs; 204 u32 tx_jumbo; 205 u32 tx_byte; 206 }; 207 208 struct dnet { 209 void __iomem *regs; 210 spinlock_t lock; 211 struct platform_device *pdev; 212 struct net_device *dev; 213 struct dnet_stats hw_stats; 214 unsigned int capabilities; /* read from FPGA */ 215 struct napi_struct napi; 216 217 /* PHY stuff */ 218 struct mii_bus *mii_bus; 219 unsigned int link; 220 unsigned int speed; 221 unsigned int duplex; 222 }; 223 224 #endif /* _DNET_H */ 225