drivers/net/pch_gbe/pch_gbe.h

   1 /*
   2  * Copyright (C) 1999 - 2010 Intel Corporation.
   3  * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
   4  *
   5  * This code was derived from the Intel e1000e Linux driver.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
  19  */
  20
  21 #ifndef _PCH_GBE_H_
  22 #define _PCH_GBE_H_
  23
  24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  25
  26 #include <linux/mii.h>
  27 #include <linux/delay.h>
  28 #include <linux/pci.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/ethtool.h>
  32 #include <linux/vmalloc.h>
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/udp.h>
  36
  37 /**
  38  * pch_gbe_regs_mac_adr - Structure holding values of mac address registers
  39  * @high        Denotes the 1st to 4th byte from the initial of MAC address
  40  * @low         Denotes the 5th to 6th byte from the initial of MAC address
  41  */
  42 struct pch_gbe_regs_mac_adr {
  43         u32 high;
  44         u32 low;
  45 };
  46 /**
  47  * pch_udc_regs - Structure holding values of MAC registers
  48  */
  49 struct pch_gbe_regs {
  50         u32 INT_ST;
  51         u32 INT_EN;
  52         u32 MODE;
  53         u32 RESET;
  54         u32 TCPIP_ACC;
  55         u32 EX_LIST;
  56         u32 INT_ST_HOLD;
  57         u32 PHY_INT_CTRL;
  58         u32 MAC_RX_EN;
  59         u32 RX_FCTRL;
  60         u32 PAUSE_REQ;
  61         u32 RX_MODE;
  62         u32 TX_MODE;
  63         u32 RX_FIFO_ST;
  64         u32 TX_FIFO_ST;
  65         u32 TX_FID;
  66         u32 TX_RESULT;
  67         u32 PAUSE_PKT1;
  68         u32 PAUSE_PKT2;
  69         u32 PAUSE_PKT3;
  70         u32 PAUSE_PKT4;
  71         u32 PAUSE_PKT5;
  72         u32 reserve[2];
  73         struct pch_gbe_regs_mac_adr mac_adr[16];
  74         u32 ADDR_MASK;
  75         u32 MIIM;
  76         u32 MAC_ADDR_LOAD;
  77         u32 RGMII_ST;
  78         u32 RGMII_CTRL;
  79         u32 reserve3[3];
  80         u32 DMA_CTRL;
  81         u32 reserve4[3];
  82         u32 RX_DSC_BASE;
  83         u32 RX_DSC_SIZE;
  84         u32 RX_DSC_HW_P;
  85         u32 RX_DSC_HW_P_HLD;
  86         u32 RX_DSC_SW_P;
  87         u32 reserve5[3];
  88         u32 TX_DSC_BASE;
  89         u32 TX_DSC_SIZE;
  90         u32 TX_DSC_HW_P;
  91         u32 TX_DSC_HW_P_HLD;
  92         u32 TX_DSC_SW_P;
  93         u32 reserve6[3];
  94         u32 RX_DMA_ST;
  95         u32 TX_DMA_ST;
  96         u32 reserve7[2];
  97         u32 WOL_ST;
  98         u32 WOL_CTRL;
  99         u32 WOL_ADDR_MASK;
 100 };
 101
 102 /* Interrupt Status */
 103 /* Interrupt Status Hold */
 104 /* Interrupt Enable */
 105 #define PCH_GBE_INT_RX_DMA_CMPLT  0x00000001 /* Receive DMA Transfer Complete */
 106 #define PCH_GBE_INT_RX_VALID      0x00000002 /* MAC Normal Receive Complete */
 107 #define PCH_GBE_INT_RX_FRAME_ERR  0x00000004 /* Receive frame error */
 108 #define PCH_GBE_INT_RX_FIFO_ERR   0x00000008 /* Receive FIFO Overflow */
 109 #define PCH_GBE_INT_RX_DMA_ERR    0x00000010 /* Receive DMA Transfer Error */
 110 #define PCH_GBE_INT_RX_DSC_EMP    0x00000020 /* Receive Descriptor Empty */
 111 #define PCH_GBE_INT_TX_CMPLT      0x00000100 /* MAC Transmission Complete */
 112 #define PCH_GBE_INT_TX_DMA_CMPLT  0x00000200 /* DMA Transfer Complete */
 113 #define PCH_GBE_INT_TX_FIFO_ERR   0x00000400 /* Transmission FIFO underflow. */
 114 #define PCH_GBE_INT_TX_DMA_ERR    0x00000800 /* Transmission DMA Error */
 115 #define PCH_GBE_INT_PAUSE_CMPLT   0x00001000 /* Pause Transmission complete */
 116 #define PCH_GBE_INT_MIIM_CMPLT    0x00010000 /* MIIM I/F Read completion */
 117 #define PCH_GBE_INT_PHY_INT       0x00100000 /* Interruption from PHY */
 118 #define PCH_GBE_INT_WOL_DET       0x01000000 /* Wake On LAN Event detection. */
 119 #define PCH_GBE_INT_TCPIP_ERR     0x10000000 /* TCP/IP Accelerator Error */
 120
 121 /* Mode */
 122 #define PCH_GBE_MODE_MII_ETHER      0x00000000  /* GIGA Ethernet Mode [MII] */
 123 #define PCH_GBE_MODE_GMII_ETHER     0x80000000  /* GIGA Ethernet Mode [GMII] */
 124 #define PCH_GBE_MODE_HALF_DUPLEX    0x00000000  /* Duplex Mode [half duplex] */
 125 #define PCH_GBE_MODE_FULL_DUPLEX    0x40000000  /* Duplex Mode [full duplex] */
 126 #define PCH_GBE_MODE_FR_BST         0x04000000  /* Frame bursting is done */
 127
 128 /* Reset */
 129 #define PCH_GBE_ALL_RST         0x80000000  /* All reset */
 130 #define PCH_GBE_TX_RST          0x00008000  /* TX MAC, TX FIFO, TX DMA reset */
 131 #define PCH_GBE_RX_RST          0x00004000  /* RX MAC, RX FIFO, RX DMA reset */
 132
 133 /* TCP/IP Accelerator Control */
 134 #define PCH_GBE_EX_LIST_EN      0x00000008  /* External List Enable */
 135 #define PCH_GBE_RX_TCPIPACC_OFF 0x00000004  /* RX TCP/IP ACC Disabled */
 136 #define PCH_GBE_TX_TCPIPACC_EN  0x00000002  /* TX TCP/IP ACC Enable */
 137 #define PCH_GBE_RX_TCPIPACC_EN  0x00000001  /* RX TCP/IP ACC Enable */
 138
 139 /* MAC RX Enable */
 140 #define PCH_GBE_MRE_MAC_RX_EN   0x00000001      /* MAC Receive Enable */
 141
 142 /* RX Flow Control */
 143 #define PCH_GBE_FL_CTRL_EN      0x80000000  /* Pause packet is enabled */
 144
 145 /* Pause Packet Request */
 146 #define PCH_GBE_PS_PKT_RQ       0x80000000  /* Pause packet Request */
 147
 148 /* RX Mode */
 149 #define PCH_GBE_ADD_FIL_EN      0x80000000  /* Address Filtering Enable */
 150 /* Multicast Filtering Enable */
 151 #define PCH_GBE_MLT_FIL_EN      0x40000000
 152 /* Receive Almost Empty Threshold */
 153 #define PCH_GBE_RH_ALM_EMP_4    0x00000000      /* 4 words */
 154 #define PCH_GBE_RH_ALM_EMP_8    0x00004000      /* 8 words */
 155 #define PCH_GBE_RH_ALM_EMP_16   0x00008000      /* 16 words */
 156 #define PCH_GBE_RH_ALM_EMP_32   0x0000C000      /* 32 words */
 157 /* Receive Almost Full Threshold */
 158 #define PCH_GBE_RH_ALM_FULL_4   0x00000000      /* 4 words */
 159 #define PCH_GBE_RH_ALM_FULL_8   0x00001000      /* 8 words */
 160 #define PCH_GBE_RH_ALM_FULL_16  0x00002000      /* 16 words */
 161 #define PCH_GBE_RH_ALM_FULL_32  0x00003000      /* 32 words */
 162 /* RX FIFO Read Triger Threshold */
 163 #define PCH_GBE_RH_RD_TRG_4     0x00000000      /* 4 words */
 164 #define PCH_GBE_RH_RD_TRG_8     0x00000200      /* 8 words */
 165 #define PCH_GBE_RH_RD_TRG_16    0x00000400      /* 16 words */
 166 #define PCH_GBE_RH_RD_TRG_32    0x00000600      /* 32 words */
 167 #define PCH_GBE_RH_RD_TRG_64    0x00000800      /* 64 words */
 168 #define PCH_GBE_RH_RD_TRG_128   0x00000A00      /* 128 words */
 169 #define PCH_GBE_RH_RD_TRG_256   0x00000C00      /* 256 words */
 170 #define PCH_GBE_RH_RD_TRG_512   0x00000E00      /* 512 words */
 171
 172 /* Receive Descriptor bit definitions */
 173 #define PCH_GBE_RXD_ACC_STAT_BCAST          0x00000400
 174 #define PCH_GBE_RXD_ACC_STAT_MCAST          0x00000200
 175 #define PCH_GBE_RXD_ACC_STAT_UCAST          0x00000100
 176 #define PCH_GBE_RXD_ACC_STAT_TCPIPOK        0x000000C0
 177 #define PCH_GBE_RXD_ACC_STAT_IPOK           0x00000080
 178 #define PCH_GBE_RXD_ACC_STAT_TCPOK          0x00000040
 179 #define PCH_GBE_RXD_ACC_STAT_IP6ERR         0x00000020
 180 #define PCH_GBE_RXD_ACC_STAT_OFLIST         0x00000010
 181 #define PCH_GBE_RXD_ACC_STAT_TYPEIP         0x00000008
 182 #define PCH_GBE_RXD_ACC_STAT_MACL           0x00000004
 183 #define PCH_GBE_RXD_ACC_STAT_PPPOE          0x00000002
 184 #define PCH_GBE_RXD_ACC_STAT_VTAGT          0x00000001
 185 #define PCH_GBE_RXD_GMAC_STAT_PAUSE         0x0200
 186 #define PCH_GBE_RXD_GMAC_STAT_MARBR         0x0100
 187 #define PCH_GBE_RXD_GMAC_STAT_MARMLT        0x0080
 188 #define PCH_GBE_RXD_GMAC_STAT_MARIND        0x0040
 189 #define PCH_GBE_RXD_GMAC_STAT_MARNOTMT      0x0020
 190 #define PCH_GBE_RXD_GMAC_STAT_TLONG         0x0010
 191 #define PCH_GBE_RXD_GMAC_STAT_TSHRT         0x0008
 192 #define PCH_GBE_RXD_GMAC_STAT_NOTOCTAL      0x0004
 193 #define PCH_GBE_RXD_GMAC_STAT_NBLERR        0x0002
 194 #define PCH_GBE_RXD_GMAC_STAT_CRCERR        0x0001
 195
 196 /* Transmit Descriptor bit definitions */
 197 #define PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF      0x0008
 198 #define PCH_GBE_TXD_CTRL_ITAG               0x0004
 199 #define PCH_GBE_TXD_CTRL_ICRC               0x0002
 200 #define PCH_GBE_TXD_CTRL_APAD               0x0001
 201 #define PCH_GBE_TXD_WORDS_SHIFT             2
 202 #define PCH_GBE_TXD_GMAC_STAT_CMPLT         0x2000
 203 #define PCH_GBE_TXD_GMAC_STAT_ABT           0x1000
 204 #define PCH_GBE_TXD_GMAC_STAT_EXCOL         0x0800
 205 #define PCH_GBE_TXD_GMAC_STAT_SNGCOL        0x0400
 206 #define PCH_GBE_TXD_GMAC_STAT_MLTCOL        0x0200
 207 #define PCH_GBE_TXD_GMAC_STAT_CRSER         0x0100
 208 #define PCH_GBE_TXD_GMAC_STAT_TLNG          0x0080
 209 #define PCH_GBE_TXD_GMAC_STAT_TSHRT         0x0040
 210 #define PCH_GBE_TXD_GMAC_STAT_LTCOL         0x0020
 211 #define PCH_GBE_TXD_GMAC_STAT_TFUNDFLW      0x0010
 212 #define PCH_GBE_TXD_GMAC_STAT_RTYCNT_MASK   0x000F
 213
 214 /* TX Mode */
 215 #define PCH_GBE_TM_NO_RTRY     0x80000000 /* No Retransmission */
 216 #define PCH_GBE_TM_LONG_PKT    0x40000000 /* Long Packt TX Enable */
 217 #define PCH_GBE_TM_ST_AND_FD   0x20000000 /* Stare and Forward */
 218 #define PCH_GBE_TM_SHORT_PKT   0x10000000 /* Short Packet TX Enable */
 219 #define PCH_GBE_TM_LTCOL_RETX  0x08000000 /* Retransmission at Late Collision */
 220 /* Frame Start Threshold */
 221 #define PCH_GBE_TM_TH_TX_STRT_4    0x00000000    /* 4 words */
 222 #define PCH_GBE_TM_TH_TX_STRT_8    0x00004000    /* 8 words */
 223 #define PCH_GBE_TM_TH_TX_STRT_16   0x00008000    /* 16 words */
 224 #define PCH_GBE_TM_TH_TX_STRT_32   0x0000C000    /* 32 words */
 225 /* Transmit Almost Empty Threshold */
 226 #define PCH_GBE_TM_TH_ALM_EMP_4    0x00000000    /* 4 words */
 227 #define PCH_GBE_TM_TH_ALM_EMP_8    0x00000800    /* 8 words */
 228 #define PCH_GBE_TM_TH_ALM_EMP_16   0x00001000    /* 16 words */
 229 #define PCH_GBE_TM_TH_ALM_EMP_32   0x00001800    /* 32 words */
 230 #define PCH_GBE_TM_TH_ALM_EMP_64   0x00002000    /* 64 words */
 231 #define PCH_GBE_TM_TH_ALM_EMP_128  0x00002800    /* 128 words */
 232 #define PCH_GBE_TM_TH_ALM_EMP_256  0x00003000    /* 256 words */
 233 #define PCH_GBE_TM_TH_ALM_EMP_512  0x00003800    /* 512 words */
 234 /* Transmit Almost Full Threshold */
 235 #define PCH_GBE_TM_TH_ALM_FULL_4   0x00000000    /* 4 words */
 236 #define PCH_GBE_TM_TH_ALM_FULL_8   0x00000200    /* 8 words */
 237 #define PCH_GBE_TM_TH_ALM_FULL_16  0x00000400    /* 16 words */
 238 #define PCH_GBE_TM_TH_ALM_FULL_32  0x00000600    /* 32 words */
 239
 240 /* RX FIFO Status */
 241 #define PCH_GBE_RF_ALM_FULL     0x80000000  /* RX FIFO is almost full. */
 242 #define PCH_GBE_RF_ALM_EMP      0x40000000  /* RX FIFO is almost empty. */
 243 #define PCH_GBE_RF_RD_TRG       0x20000000  /* Become more than RH_RD_TRG. */
 244 #define PCH_GBE_RF_STRWD        0x1FFE0000  /* The word count of RX FIFO. */
 245 #define PCH_GBE_RF_RCVING       0x00010000  /* Stored in RX FIFO. */
 246
 247 /* MAC Address Mask */
 248 #define PCH_GBE_BUSY                0x80000000
 249
 250 /* MIIM  */
 251 #define PCH_GBE_MIIM_OPER_WRITE     0x04000000
 252 #define PCH_GBE_MIIM_OPER_READ      0x00000000
 253 #define PCH_GBE_MIIM_OPER_READY     0x04000000
 254 #define PCH_GBE_MIIM_PHY_ADDR_SHIFT 21
 255 #define PCH_GBE_MIIM_REG_ADDR_SHIFT 16
 256
 257 /* RGMII Status */
 258 #define PCH_GBE_LINK_UP             0x80000008
 259 #define PCH_GBE_RXC_SPEED_MSK       0x00000006
 260 #define PCH_GBE_RXC_SPEED_2_5M      0x00000000    /* 2.5MHz */
 261 #define PCH_GBE_RXC_SPEED_25M       0x00000002    /* 25MHz  */
 262 #define PCH_GBE_RXC_SPEED_125M      0x00000004    /* 100MHz */
 263 #define PCH_GBE_DUPLEX_FULL         0x00000001
 264
 265 /* RGMII Control */
 266 #define PCH_GBE_CRS_SEL             0x00000010
 267 #define PCH_GBE_RGMII_RATE_125M     0x00000000
 268 #define PCH_GBE_RGMII_RATE_25M      0x00000008
 269 #define PCH_GBE_RGMII_RATE_2_5M     0x0000000C
 270 #define PCH_GBE_RGMII_MODE_GMII     0x00000000
 271 #define PCH_GBE_RGMII_MODE_RGMII    0x00000002
 272 #define PCH_GBE_CHIP_TYPE_EXTERNAL  0x00000000
 273 #define PCH_GBE_CHIP_TYPE_INTERNAL  0x00000001
 274
 275 /* DMA Control */
 276 #define PCH_GBE_RX_DMA_EN       0x00000002   /* Enables Receive DMA */
 277 #define PCH_GBE_TX_DMA_EN       0x00000001   /* Enables Transmission DMA */
 278
 279 /* RX DMA STATUS */
 280 #define PCH_GBE_IDLE_CHECK       0xFFFFFFFE
 281
 282 /* Wake On LAN Status */
 283 #define PCH_GBE_WLS_BR          0x00000008 /* Broadcas Address */
 284 #define PCH_GBE_WLS_MLT         0x00000004 /* Multicast Address */
 285
 286 /* The Frame registered in Address Recognizer */
 287 #define PCH_GBE_WLS_IND         0x00000002
 288 #define PCH_GBE_WLS_MP          0x00000001 /* Magic packet Address */
 289
 290 /* Wake On LAN Control */
 291 #define PCH_GBE_WLC_WOL_MODE    0x00010000
 292 #define PCH_GBE_WLC_IGN_TLONG   0x00000100
 293 #define PCH_GBE_WLC_IGN_TSHRT   0x00000080
 294 #define PCH_GBE_WLC_IGN_OCTER   0x00000040
 295 #define PCH_GBE_WLC_IGN_NBLER   0x00000020
 296 #define PCH_GBE_WLC_IGN_CRCER   0x00000010
 297 #define PCH_GBE_WLC_BR          0x00000008
 298 #define PCH_GBE_WLC_MLT         0x00000004
 299 #define PCH_GBE_WLC_IND         0x00000002
 300 #define PCH_GBE_WLC_MP          0x00000001
 301
 302 /* Wake On LAN Address Mask */
 303 #define PCH_GBE_WLA_BUSY        0x80000000
 304
 305
 306
 307 /* TX/RX descriptor defines */
 308 #define PCH_GBE_MAX_TXD                     4096
 309 #define PCH_GBE_DEFAULT_TXD                  256
 310 #define PCH_GBE_MIN_TXD                        8
 311 #define PCH_GBE_MAX_RXD                     4096
 312 #define PCH_GBE_DEFAULT_RXD                  256
 313 #define PCH_GBE_MIN_RXD                        8
 314
 315 /* Number of Transmit and Receive Descriptors must be a multiple of 8 */
 316 #define PCH_GBE_TX_DESC_MULTIPLE               8
 317 #define PCH_GBE_RX_DESC_MULTIPLE               8
 318
 319 /* Read/Write operation is done through MII Management IF */
 320 #define PCH_GBE_HAL_MIIM_READ          ((u32)0x00000000)
 321 #define PCH_GBE_HAL_MIIM_WRITE         ((u32)0x04000000)
 322
 323 /* flow control values */
 324 #define PCH_GBE_FC_NONE                 0
 325 #define PCH_GBE_FC_RX_PAUSE             1
 326 #define PCH_GBE_FC_TX_PAUSE             2
 327 #define PCH_GBE_FC_FULL                 3
 328 #define PCH_GBE_FC_DEFAULT              PCH_GBE_FC_FULL
 329
 330
 331 struct pch_gbe_hw;
 332 /**
 333  * struct  pch_gbe_functions - HAL APi function pointer
 334  * @get_bus_info:       for pch_gbe_hal_get_bus_info
 335  * @init_hw:            for pch_gbe_hal_init_hw
 336  * @read_phy_reg:       for pch_gbe_hal_read_phy_reg
 337  * @write_phy_reg:      for pch_gbe_hal_write_phy_reg
 338  * @reset_phy:          for pch_gbe_hal_phy_hw_reset
 339  * @sw_reset_phy:       for pch_gbe_hal_phy_sw_reset
 340  * @power_up_phy:       for pch_gbe_hal_power_up_phy
 341  * @power_down_phy:     for pch_gbe_hal_power_down_phy
 342  * @read_mac_addr:      for pch_gbe_hal_read_mac_addr
 343  */
 344 struct pch_gbe_functions {
 345         void (*get_bus_info) (struct pch_gbe_hw *);
 346         s32 (*init_hw) (struct pch_gbe_hw *);
 347         s32 (*read_phy_reg) (struct pch_gbe_hw *, u32, u16 *);
 348         s32 (*write_phy_reg) (struct pch_gbe_hw *, u32, u16);
 349         void (*reset_phy) (struct pch_gbe_hw *);
 350         void (*sw_reset_phy) (struct pch_gbe_hw *);
 351         void (*power_up_phy) (struct pch_gbe_hw *hw);
 352         void (*power_down_phy) (struct pch_gbe_hw *hw);
 353         s32 (*read_mac_addr) (struct pch_gbe_hw *);
 354 };
 355
 356 /**
 357  * struct pch_gbe_mac_info - MAC information
 358  * @addr[6]:            Store the MAC address
 359  * @fc:                 Mode of flow control
 360  * @fc_autoneg:         Auto negotiation enable for flow control setting
 361  * @tx_fc_enable:       Enable flag of Transmit flow control
 362  * @max_frame_size:     Max transmit frame size
 363  * @min_frame_size:     Min transmit frame size
 364  * @autoneg:            Auto negotiation enable
 365  * @link_speed:         Link speed
 366  * @link_duplex:        Link duplex
 367  */
 368 struct pch_gbe_mac_info {
 369         u8 addr[6];
 370         u8 fc;
 371         u8 fc_autoneg;
 372         u8 tx_fc_enable;
 373         u32 max_frame_size;
 374         u32 min_frame_size;
 375         u8 autoneg;
 376         u16 link_speed;
 377         u16 link_duplex;
 378 };
 379
 380 /**
 381  * struct pch_gbe_phy_info - PHY information
 382  * @addr:               PHY address
 383  * @id:                 PHY's identifier
 384  * @revision:           PHY's revision
 385  * @reset_delay_us:     HW reset delay time[us]
 386  * @autoneg_advertised: Autoneg advertised
 387  */
 388 struct pch_gbe_phy_info {
 389         u32 addr;
 390         u32 id;
 391         u32 revision;
 392         u32 reset_delay_us;
 393         u16 autoneg_advertised;
 394 };
 395
 396 /*!
 397  * @ingroup Gigabit Ether driver Layer
 398  * @struct  pch_gbe_bus_info
 399  * @brief   Bus information
 400  */
 401 struct pch_gbe_bus_info {
 402         u8 type;
 403         u8 speed;
 404         u8 width;
 405 };
 406
 407 /*!
 408  * @ingroup Gigabit Ether driver Layer
 409  * @struct  pch_gbe_hw
 410  * @brief   Hardware information
 411  */
 412 struct pch_gbe_hw {
 413         void *back;
 414
 415         struct pch_gbe_regs  __iomem *reg;
 416         spinlock_t miim_lock;
 417
 418         const struct pch_gbe_functions *func;
 419         struct pch_gbe_mac_info mac;
 420         struct pch_gbe_phy_info phy;
 421         struct pch_gbe_bus_info bus;
 422 };
 423
 424 /**
 425  * struct pch_gbe_rx_desc - Receive Descriptor
 426  * @buffer_addr:        RX Frame Buffer Address
 427  * @tcp_ip_status:      TCP/IP Accelerator Status
 428  * @rx_words_eob:       RX word count and Byte position
 429  * @gbec_status:        GMAC Status
 430  * @dma_status:         DMA Status
 431  * @reserved1:          Reserved
 432  * @reserved2:          Reserved
 433  */
 434 struct pch_gbe_rx_desc {
 435         u32 buffer_addr;
 436         u32 tcp_ip_status;
 437         u16 rx_words_eob;
 438         u16 gbec_status;
 439         u8 dma_status;
 440         u8 reserved1;
 441         u16 reserved2;
 442 };
 443
 444 /**
 445  * struct pch_gbe_tx_desc - Transmit Descriptor
 446  * @buffer_addr:        TX Frame Buffer Address
 447  * @length:             Data buffer length
 448  * @reserved1:          Reserved
 449  * @tx_words_eob:       TX word count and Byte position
 450  * @tx_frame_ctrl:      TX Frame Control
 451  * @dma_status:         DMA Status
 452  * @reserved2:          Reserved
 453  * @gbec_status:        GMAC Status
 454  */
 455 struct pch_gbe_tx_desc {
 456         u32 buffer_addr;
 457         u16 length;
 458         u16 reserved1;
 459         u16 tx_words_eob;
 460         u16 tx_frame_ctrl;
 461         u8 dma_status;
 462         u8 reserved2;
 463         u16 gbec_status;
 464 };
 465
 466
 467 /**
 468  * struct pch_gbe_buffer - Buffer information
 469  * @skb:        pointer to a socket buffer
 470  * @dma:        DMA address
 471  * @time_stamp: time stamp
 472  * @length:     data size
 473  */
 474 struct pch_gbe_buffer {
 475         struct sk_buff *skb;
 476         dma_addr_t dma;
 477         unsigned char *rx_buffer;
 478         unsigned long time_stamp;
 479         u16 length;
 480         bool mapped;
 481 };
 482
 483 /**
 484  * struct pch_gbe_tx_ring - tx ring information
 485  * @tx_lock:    spinlock structs
 486  * @desc:       pointer to the descriptor ring memory
 487  * @dma:        physical address of the descriptor ring
 488  * @size:       length of descriptor ring in bytes
 489  * @count:      number of descriptors in the ring
 490  * @next_to_use:        next descriptor to associate a buffer with
 491  * @next_to_clean:      next descriptor to check for DD status bit
 492  * @buffer_info:        array of buffer information structs
 493  */
 494 struct pch_gbe_tx_ring {
 495         spinlock_t tx_lock;
 496         struct pch_gbe_tx_desc *desc;
 497         dma_addr_t dma;
 498         unsigned int size;
 499         unsigned int count;
 500         unsigned int next_to_use;
 501         unsigned int next_to_clean;
 502         struct pch_gbe_buffer *buffer_info;
 503 };
 504
 505 /**
 506  * struct pch_gbe_rx_ring - rx ring information
 507  * @desc:       pointer to the descriptor ring memory
 508  * @dma:        physical address of the descriptor ring
 509  * @size:       length of descriptor ring in bytes
 510  * @count:      number of descriptors in the ring
 511  * @next_to_use:        next descriptor to associate a buffer with
 512  * @next_to_clean:      next descriptor to check for DD status bit
 513  * @buffer_info:        array of buffer information structs
 514  */
 515 struct pch_gbe_rx_ring {
 516         struct pch_gbe_rx_desc *desc;
 517         dma_addr_t dma;
 518         unsigned char *rx_buff_pool;
 519         dma_addr_t rx_buff_pool_logic;
 520         unsigned int rx_buff_pool_size;
 521         unsigned int size;
 522         unsigned int count;
 523         unsigned int next_to_use;
 524         unsigned int next_to_clean;
 525         struct pch_gbe_buffer *buffer_info;
 526 };
 527
 528 /**
 529  * struct pch_gbe_hw_stats - Statistics counters collected by the MAC
 530  * @rx_packets:             total packets received
 531  * @tx_packets:             total packets transmitted
 532  * @rx_bytes:               total bytes received
 533  * @tx_bytes:               total bytes transmitted
 534  * @rx_errors:              bad packets received
 535  * @tx_errors:              packet transmit problems
 536  * @rx_dropped:             no space in Linux buffers
 537  * @tx_dropped:             no space available in Linux
 538  * @multicast:              multicast packets received
 539  * @collisions:             collisions
 540  * @rx_crc_errors:          received packet with crc error
 541  * @rx_frame_errors:        received frame alignment error
 542  * @rx_alloc_buff_failed:   allocate failure of a receive buffer
 543  * @tx_length_errors:       transmit length error
 544  * @tx_aborted_errors:      transmit aborted error
 545  * @tx_carrier_errors:      transmit carrier error
 546  * @tx_timeout_count:       Number of transmit timeout
 547  * @tx_restart_count:       Number of transmit restert
 548  * @intr_rx_dsc_empty_count:    Interrupt count of receive descriptor empty
 549  * @intr_rx_frame_err_count:    Interrupt count of receive frame error
 550  * @intr_rx_fifo_err_count:     Interrupt count of receive FIFO error
 551  * @intr_rx_dma_err_count:      Interrupt count of receive DMA error
 552  * @intr_tx_fifo_err_count:     Interrupt count of transmit FIFO error
 553  * @intr_tx_dma_err_count:      Interrupt count of transmit DMA error
 554  * @intr_tcpip_err_count:       Interrupt count of TCP/IP Accelerator
 555  */
 556 struct pch_gbe_hw_stats {
 557         u32 rx_packets;
 558         u32 tx_packets;
 559         u32 rx_bytes;
 560         u32 tx_bytes;
 561         u32 rx_errors;
 562         u32 tx_errors;
 563         u32 rx_dropped;
 564         u32 tx_dropped;
 565         u32 multicast;
 566         u32 collisions;
 567         u32 rx_crc_errors;
 568         u32 rx_frame_errors;
 569         u32 rx_alloc_buff_failed;
 570         u32 tx_length_errors;
 571         u32 tx_aborted_errors;
 572         u32 tx_carrier_errors;
 573         u32 tx_timeout_count;
 574         u32 tx_restart_count;
 575         u32 intr_rx_dsc_empty_count;
 576         u32 intr_rx_frame_err_count;
 577         u32 intr_rx_fifo_err_count;
 578         u32 intr_rx_dma_err_count;
 579         u32 intr_tx_fifo_err_count;
 580         u32 intr_tx_dma_err_count;
 581         u32 intr_tcpip_err_count;
 582 };
 583
 584 /**
 585  * struct pch_gbe_adapter - board specific private data structure
 586  * @stats_lock: Spinlock structure for status
 587  * @tx_queue_lock:      Spinlock structure for transmit
 588  * @ethtool_lock:       Spinlock structure for ethtool
 589  * @irq_sem:            Semaphore for interrupt
 590  * @netdev:             Pointer of network device structure
 591  * @pdev:               Pointer of pci device structure
 592  * @polling_netdev:     Pointer of polling network device structure
 593  * @napi:               NAPI structure
 594  * @hw:                 Pointer of hardware structure
 595  * @stats:              Hardware status
 596  * @reset_task:         Reset task
 597  * @mii:                MII information structure
 598  * @watchdog_timer:     Watchdog timer list
 599  * @wake_up_evt:        Wake up event
 600  * @config_space:       Configuration space
 601  * @msg_enable:         Driver message level
 602  * @led_status:         LED status
 603  * @tx_ring:            Pointer of Tx descriptor ring structure
 604  * @rx_ring:            Pointer of Rx descriptor ring structure
 605  * @rx_buffer_len:      Receive buffer length
 606  * @tx_queue_len:       Transmit queue length
 607  * @have_msi:           PCI MSI mode flag
 608  */
 609
 610 struct pch_gbe_adapter {
 611         spinlock_t stats_lock;
 612         spinlock_t tx_queue_lock;
 613         spinlock_t ethtool_lock;
 614         atomic_t irq_sem;
 615         struct net_device *netdev;
 616         struct pci_dev *pdev;
 617         struct net_device *polling_netdev;
 618         struct napi_struct napi;
 619         struct pch_gbe_hw hw;
 620         struct pch_gbe_hw_stats stats;
 621         struct work_struct reset_task;
 622         struct mii_if_info mii;
 623         struct timer_list watchdog_timer;
 624         u32 wake_up_evt;
 625         u32 *config_space;
 626         unsigned long led_status;
 627         struct pch_gbe_tx_ring *tx_ring;
 628         struct pch_gbe_rx_ring *rx_ring;
 629         unsigned long rx_buffer_len;
 630         unsigned long tx_queue_len;
 631         bool have_msi;
 632         bool rx_stop_flag;
 633 };
 634
 635 extern const char pch_driver_version[];
 636
 637 /* pch_gbe_main.c */
 638 extern int pch_gbe_up(struct pch_gbe_adapter *adapter);
 639 extern void pch_gbe_down(struct pch_gbe_adapter *adapter);
 640 extern void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter);
 641 extern void pch_gbe_reset(struct pch_gbe_adapter *adapter);
 642 extern int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter,
 643                                        struct pch_gbe_tx_ring *txdr);
 644 extern int pch_gbe_setup_rx_resources(struct pch_gbe_adapter *adapter,
 645                                        struct pch_gbe_rx_ring *rxdr);
 646 extern void pch_gbe_free_tx_resources(struct pch_gbe_adapter *adapter,
 647                                        struct pch_gbe_tx_ring *tx_ring);
 648 extern void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter,
 649                                        struct pch_gbe_rx_ring *rx_ring);
 650 extern void pch_gbe_update_stats(struct pch_gbe_adapter *adapter);
 651
 652 /* pch_gbe_param.c */
 653 extern void pch_gbe_check_options(struct pch_gbe_adapter *adapter);
 654
 655 /* pch_gbe_ethtool.c */
 656 extern void pch_gbe_set_ethtool_ops(struct net_device *netdev);
 657
 658 /* pch_gbe_mac.c */
 659 extern s32 pch_gbe_mac_force_mac_fc(struct pch_gbe_hw *hw);
 660 extern s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw);
 661 extern u16 pch_gbe_mac_ctrl_miim(struct pch_gbe_hw *hw,
 662                                   u32 addr, u32 dir, u32 reg, u16 data);
 663 #endif /* _PCH_GBE_H_ */