drivers/net/saa9730.h

   1 /*
   2  * Copyright (C) 2000, 2005  MIPS Technologies, Inc.  All rights reserved.
   3  *      Authors: Carsten Langgaard <carstenl@mips.com>
   4  *               Maciej W. Rozycki <macro@mips.com>
   5  *
   6  * ########################################################################
   7  *
   8  *  This program is free software; you can distribute it and/or modify it
   9  *  under the terms of the GNU General Public License (Version 2) as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope it will be useful, but WITHOUT
  13  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  *  for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  20  *
  21  * ########################################################################
  22  *
  23  * SAA9730 ethernet driver description.
  24  *
  25  */
  26 #ifndef _SAA9730_H
  27 #define _SAA9730_H
  28
  29
  30 /* Number of 6-byte entries in the CAM. */
  31 #define LAN_SAA9730_CAM_ENTRIES              10
  32 #define LAN_SAA9730_CAM_DWORDS               ((LAN_SAA9730_CAM_ENTRIES*6)/4)
  33
  34 /* TX and RX packet size: fixed to 2048 bytes, according to HW requirements. */
  35 #define LAN_SAA9730_PACKET_SIZE                       2048
  36
  37 /*
  38  * Number of TX buffers = number of RX buffers = 2, which is fixed according
  39  * to HW requirements.
  40  */
  41 #define LAN_SAA9730_BUFFERS                           2
  42
  43 /* Number of RX packets per RX buffer. */
  44 #define LAN_SAA9730_RCV_Q_SIZE                        15
  45
  46 /* Number of TX packets per TX buffer. */
  47 #define LAN_SAA9730_TXM_Q_SIZE                        15
  48
  49 /*
  50  * We get an interrupt for each LAN_SAA9730_DEFAULT_RCV_Q_INT_THRESHOLD
  51  * packets received.
  52  * If however we receive less than  LAN_SAA9730_DEFAULT_RCV_Q_INT_THRESHOLD
  53  * packets, the hardware can timeout after a certain time and still tell
  54  * us packets have arrived.
  55  * The timeout value in unit of 32 PCI clocks (33Mhz).
  56  * The value 200 approximates 0.0002 seconds.
  57  */
  58 #define LAN_SAA9730_RCV_Q_INT_THRESHOLD               1
  59 #define LAN_SAA9730_DEFAULT_TIME_OUT_CNT              10
  60
  61 #define RXSF_NDIS                       0
  62 #define RXSF_READY                      2
  63 #define RXSF_HWDONE                     3
  64
  65 #define TXSF_EMPTY                      0
  66 #define TXSF_READY                      2
  67 #define TXSF_HWDONE                     3
  68
  69 #define LANEND_LITTLE                   0
  70 #define LANEND_BIG_2143                 1
  71 #define LANEND_BIG_4321                 2
  72
  73 #define LANMB_ANY                       0
  74 #define LANMB_8                         1
  75 #define LANMB_32                        2
  76 #define LANMB_64                        3
  77
  78 #define MACCM_AUTOMATIC                 0
  79 #define MACCM_10MB                      1
  80 #define MACCM_MII                       2
  81
  82 /*
  83  * PHY definitions for Basic registers of QS6612 (used on MIPS ATLAS board)
  84  */
  85 #define PHY_CONTROL                     0x0
  86 #define PHY_STATUS                      0x1
  87 #define PHY_STATUS_LINK_UP              0x4
  88 #define PHY_CONTROL_RESET               0x8000
  89 #define PHY_CONTROL_AUTO_NEG            0x1000
  90 #define PHY_CONTROL_RESTART_AUTO_NEG    0x0200
  91 #define PHY_ADDRESS                     0x0
  92
  93 /* PK_COUNT register. */
  94 #define PK_COUNT_TX_A_SHF               24
  95 #define PK_COUNT_TX_A_MSK               (0xff << PK_COUNT_TX_A_SHF)
  96 #define PK_COUNT_TX_B_SHF               16
  97 #define PK_COUNT_TX_B_MSK               (0xff << PK_COUNT_TX_B_SHF)
  98 #define PK_COUNT_RX_A_SHF               8
  99 #define PK_COUNT_RX_A_MSK               (0xff << PK_COUNT_RX_A_SHF)
 100 #define PK_COUNT_RX_B_SHF               0
 101 #define PK_COUNT_RX_B_MSK               (0xff << PK_COUNT_RX_B_SHF)
 102
 103 /* OK2USE register. */
 104 #define OK2USE_TX_A                     0x8
 105 #define OK2USE_TX_B                     0x4
 106 #define OK2USE_RX_A                     0x2
 107 #define OK2USE_RX_B                     0x1
 108
 109 /* LAN DMA CONTROL register. */
 110 #define DMA_CTL_BLK_INT                 0x80000000
 111 #define DMA_CTL_MAX_XFER_SHF            18
 112 #define DMA_CTL_MAX_XFER_MSK            (0x3 << LAN_DMA_CTL_MAX_XFER_SHF)
 113 #define DMA_CTL_ENDIAN_SHF              16
 114 #define DMA_CTL_ENDIAN_MSK              (0x3 << LAN_DMA_CTL_ENDIAN_SHF)
 115 #define DMA_CTL_RX_INT_COUNT_SHF        8
 116 #define DMA_CTL_RX_INT_COUNT_MSK        (0xff << LAN_DMA_CTL_RX_INT_COUNT_SHF)
 117 #define DMA_CTL_EN_TX_DMA               0x00000080
 118 #define DMA_CTL_EN_RX_DMA               0x00000040
 119 #define DMA_CTL_RX_INT_BUFFUL_EN        0x00000020
 120 #define DMA_CTL_RX_INT_TO_EN            0x00000010
 121 #define DMA_CTL_RX_INT_EN               0x00000008
 122 #define DMA_CTL_TX_INT_EN               0x00000004
 123 #define DMA_CTL_MAC_TX_INT_EN           0x00000002
 124 #define DMA_CTL_MAC_RX_INT_EN           0x00000001
 125
 126 /* DMA STATUS register. */
 127 #define DMA_STATUS_BAD_ADDR_SHF         16
 128 #define DMA_STATUS_BAD_ADDR_MSK         (0xf << DMA_STATUS_BAD_ADDR_SHF)
 129 #define DMA_STATUS_RX_PKTS_RECEIVED_SHF 8
 130 #define DMA_STATUS_RX_PKTS_RECEIVED_MSK (0xff << DMA_STATUS_RX_PKTS_RECEIVED_SHF)
 131 #define DMA_STATUS_TX_EN_SYNC           0x00000080
 132 #define DMA_STATUS_RX_BUF_A_FUL         0x00000040
 133 #define DMA_STATUS_RX_BUF_B_FUL         0x00000020
 134 #define DMA_STATUS_RX_TO_INT            0x00000010
 135 #define DMA_STATUS_RX_INT               0x00000008
 136 #define DMA_STATUS_TX_INT               0x00000004
 137 #define DMA_STATUS_MAC_TX_INT           0x00000002
 138 #define DMA_STATUS_MAC_RX_INT           0x00000001
 139
 140 /* DMA TEST/PANIC SWITHES register. */
 141 #define DMA_TEST_LOOPBACK               0x01000000
 142 #define DMA_TEST_SW_RESET               0x00000001
 143
 144 /* MAC CONTROL register. */
 145 #define MAC_CONTROL_EN_MISS_ROLL        0x00002000
 146 #define MAC_CONTROL_MISS_ROLL           0x00000400
 147 #define MAC_CONTROL_LOOP10              0x00000080
 148 #define MAC_CONTROL_CONN_SHF            5
 149 #define MAC_CONTROL_CONN_MSK            (0x3 << MAC_CONTROL_CONN_SHF)
 150 #define MAC_CONTROL_MAC_LOOP            0x00000010
 151 #define MAC_CONTROL_FULL_DUP            0x00000008
 152 #define MAC_CONTROL_RESET               0x00000004
 153 #define MAC_CONTROL_HALT_IMM            0x00000002
 154 #define MAC_CONTROL_HALT_REQ            0x00000001
 155
 156 /* CAM CONTROL register. */
 157 #define CAM_CONTROL_COMP_EN             0x00000010
 158 #define CAM_CONTROL_NEG_CAM             0x00000008
 159 #define CAM_CONTROL_BROAD_ACC           0x00000004
 160 #define CAM_CONTROL_GROUP_ACC           0x00000002
 161 #define CAM_CONTROL_STATION_ACC         0x00000001
 162
 163 /* TRANSMIT CONTROL register. */
 164 #define TX_CTL_EN_COMP                  0x00004000
 165 #define TX_CTL_EN_TX_PAR                0x00002000
 166 #define TX_CTL_EN_LATE_COLL             0x00001000
 167 #define TX_CTL_EN_EX_COLL               0x00000800
 168 #define TX_CTL_EN_L_CARR                0x00000400
 169 #define TX_CTL_EN_EX_DEFER              0x00000200
 170 #define TX_CTL_EN_UNDER                 0x00000100
 171 #define TX_CTL_MII10                    0x00000080
 172 #define TX_CTL_SD_PAUSE                 0x00000040
 173 #define TX_CTL_NO_EX_DEF0               0x00000020
 174 #define TX_CTL_F_BACK                   0x00000010
 175 #define TX_CTL_NO_CRC                   0x00000008
 176 #define TX_CTL_NO_PAD                   0x00000004
 177 #define TX_CTL_TX_HALT                  0x00000002
 178 #define TX_CTL_TX_EN                    0x00000001
 179
 180 /* TRANSMIT STATUS register. */
 181 #define TX_STATUS_SQ_ERR                0x00010000
 182 #define TX_STATUS_TX_HALTED             0x00008000
 183 #define TX_STATUS_COMP                  0x00004000
 184 #define TX_STATUS_TX_PAR                0x00002000
 185 #define TX_STATUS_LATE_COLL             0x00001000
 186 #define TX_STATUS_TX10_STAT             0x00000800
 187 #define TX_STATUS_L_CARR                0x00000400
 188 #define TX_STATUS_EX_DEFER              0x00000200
 189 #define TX_STATUS_UNDER                 0x00000100
 190 #define TX_STATUS_IN_TX                 0x00000080
 191 #define TX_STATUS_PAUSED                0x00000040
 192 #define TX_STATUS_TX_DEFERRED           0x00000020
 193 #define TX_STATUS_EX_COLL               0x00000010
 194 #define TX_STATUS_TX_COLL_SHF           0
 195 #define TX_STATUS_TX_COLL_MSK           (0xf << TX_STATUS_TX_COLL_SHF)
 196
 197 /* RECEIVE CONTROL register. */
 198 #define RX_CTL_EN_GOOD                  0x00004000
 199 #define RX_CTL_EN_RX_PAR                0x00002000
 200 #define RX_CTL_EN_LONG_ERR              0x00000800
 201 #define RX_CTL_EN_OVER                  0x00000400
 202 #define RX_CTL_EN_CRC_ERR               0x00000200
 203 #define RX_CTL_EN_ALIGN                 0x00000100
 204 #define RX_CTL_IGNORE_CRC               0x00000040
 205 #define RX_CTL_PASS_CTL                 0x00000020
 206 #define RX_CTL_STRIP_CRC                0x00000010
 207 #define RX_CTL_SHORT_EN                 0x00000008
 208 #define RX_CTL_LONG_EN                  0x00000004
 209 #define RX_CTL_RX_HALT                  0x00000002
 210 #define RX_CTL_RX_EN                    0x00000001
 211
 212 /* RECEIVE STATUS register. */
 213 #define RX_STATUS_RX_HALTED             0x00008000
 214 #define RX_STATUS_GOOD                  0x00004000
 215 #define RX_STATUS_RX_PAR                0x00002000
 216 #define RX_STATUS_LONG_ERR              0x00000800
 217 #define RX_STATUS_OVERFLOW              0x00000400
 218 #define RX_STATUS_CRC_ERR               0x00000200
 219 #define RX_STATUS_ALIGN_ERR             0x00000100
 220 #define RX_STATUS_RX10_STAT             0x00000080
 221 #define RX_STATUS_INT_RX                0x00000040
 222 #define RX_STATUS_CTL_RECD              0x00000020
 223
 224 /* MD_CA register. */
 225 #define MD_CA_PRE_SUP                   0x00001000
 226 #define MD_CA_BUSY                      0x00000800
 227 #define MD_CA_WR                        0x00000400
 228 #define MD_CA_PHY_SHF                   5
 229 #define MD_CA_PHY_MSK                   (0x1f << MD_CA_PHY_SHF)
 230 #define MD_CA_ADDR_SHF                  0
 231 #define MD_CA_ADDR_MSK                  (0x1f << MD_CA_ADDR_SHF)
 232
 233 /* Tx Status/Control. */
 234 #define TX_STAT_CTL_OWNER_SHF           30
 235 #define TX_STAT_CTL_OWNER_MSK           (0x3 << TX_STAT_CTL_OWNER_SHF)
 236 #define TX_STAT_CTL_FRAME_SHF           27
 237 #define TX_STAT_CTL_FRAME_MSK           (0x7 << TX_STAT_CTL_FRAME_SHF)
 238 #define TX_STAT_CTL_STATUS_SHF          11
 239 #define TX_STAT_CTL_STATUS_MSK          (0x1ffff << TX_STAT_CTL_STATUS_SHF)
 240 #define TX_STAT_CTL_LENGTH_SHF          0
 241 #define TX_STAT_CTL_LENGTH_MSK          (0x7ff << TX_STAT_CTL_LENGTH_SHF)
 242
 243 #define TX_STAT_CTL_ERROR_MSK           ((TX_STATUS_SQ_ERR      |     \
 244                                           TX_STATUS_TX_HALTED   |     \
 245                                           TX_STATUS_TX_PAR      |     \
 246                                           TX_STATUS_LATE_COLL   |     \
 247                                           TX_STATUS_L_CARR      |     \
 248                                           TX_STATUS_EX_DEFER    |     \
 249                                           TX_STATUS_UNDER       |     \
 250                                           TX_STATUS_PAUSED      |     \
 251                                           TX_STATUS_TX_DEFERRED |     \
 252                                           TX_STATUS_EX_COLL     |     \
 253                                           TX_STATUS_TX_COLL_MSK)      \
 254                                                     << TX_STAT_CTL_STATUS_SHF)
 255 #define TX_STAT_CTL_INT_AFTER_TX        0x4
 256
 257 /* Rx Status/Control. */
 258 #define RX_STAT_CTL_OWNER_SHF           30
 259 #define RX_STAT_CTL_OWNER_MSK           (0x3 << RX_STAT_CTL_OWNER_SHF)
 260 #define RX_STAT_CTL_STATUS_SHF          11
 261 #define RX_STAT_CTL_STATUS_MSK          (0xffff << RX_STAT_CTL_STATUS_SHF)
 262 #define RX_STAT_CTL_LENGTH_SHF          0
 263 #define RX_STAT_CTL_LENGTH_MSK          (0x7ff << RX_STAT_CTL_LENGTH_SHF)
 264
 265
 266
 267 /* The SAA9730 (LAN) controller register map, as seen via the PCI-bus. */
 268 #define SAA9730_LAN_REGS_ADDR   0x20400
 269 #define SAA9730_LAN_REGS_SIZE   0x00400
 270
 271 struct lan_saa9730_regmap {
 272         volatile unsigned int TxBuffA;                  /* 0x20400 */
 273         volatile unsigned int TxBuffB;                  /* 0x20404 */
 274         volatile unsigned int RxBuffA;                  /* 0x20408 */
 275         volatile unsigned int RxBuffB;                  /* 0x2040c */
 276         volatile unsigned int PacketCount;              /* 0x20410 */
 277         volatile unsigned int Ok2Use;                   /* 0x20414 */
 278         volatile unsigned int LanDmaCtl;                /* 0x20418 */
 279         volatile unsigned int Timeout;                  /* 0x2041c */
 280         volatile unsigned int DmaStatus;                /* 0x20420 */
 281         volatile unsigned int DmaTest;                  /* 0x20424 */
 282         volatile unsigned char filler20428[0x20430 - 0x20428];
 283         volatile unsigned int PauseCount;               /* 0x20430 */
 284         volatile unsigned int RemotePauseCount;         /* 0x20434 */
 285         volatile unsigned char filler20438[0x20440 - 0x20438];
 286         volatile unsigned int MacCtl;                   /* 0x20440 */
 287         volatile unsigned int CamCtl;                   /* 0x20444 */
 288         volatile unsigned int TxCtl;                    /* 0x20448 */
 289         volatile unsigned int TxStatus;                 /* 0x2044c */
 290         volatile unsigned int RxCtl;                    /* 0x20450 */
 291         volatile unsigned int RxStatus;                 /* 0x20454 */
 292         volatile unsigned int StationMgmtData;          /* 0x20458 */
 293         volatile unsigned int StationMgmtCtl;           /* 0x2045c */
 294         volatile unsigned int CamAddress;               /* 0x20460 */
 295         volatile unsigned int CamData;                  /* 0x20464 */
 296         volatile unsigned int CamEnable;                /* 0x20468 */
 297         volatile unsigned char filler2046c[0x20500 - 0x2046c];
 298         volatile unsigned int DebugPCIMasterAddr;       /* 0x20500 */
 299         volatile unsigned int DebugLanTxStateMachine;   /* 0x20504 */
 300         volatile unsigned int DebugLanRxStateMachine;   /* 0x20508 */
 301         volatile unsigned int DebugLanTxFifoPointers;   /* 0x2050c */
 302         volatile unsigned int DebugLanRxFifoPointers;   /* 0x20510 */
 303         volatile unsigned int DebugLanCtlStateMachine;  /* 0x20514 */
 304 };
 305 typedef volatile struct lan_saa9730_regmap t_lan_saa9730_regmap;
 306
 307
 308 /* EVM interrupt control registers. */
 309 #define EVM_LAN_INT                     0x00010000
 310 #define EVM_MASTER_EN                   0x00000001
 311
 312 /* The SAA9730 (EVM) controller register map, as seen via the PCI-bus. */
 313 #define SAA9730_EVM_REGS_ADDR   0x02000
 314 #define SAA9730_EVM_REGS_SIZE   0x00400
 315
 316 struct evm_saa9730_regmap {
 317         volatile unsigned int InterruptStatus1;         /* 0x2000 */
 318         volatile unsigned int InterruptEnable1;         /* 0x2004 */
 319         volatile unsigned int InterruptMonitor1;        /* 0x2008 */
 320         volatile unsigned int Counter;                  /* 0x200c */
 321         volatile unsigned int CounterThreshold;         /* 0x2010 */
 322         volatile unsigned int CounterControl;           /* 0x2014 */
 323         volatile unsigned int GpioControl1;             /* 0x2018 */
 324         volatile unsigned int InterruptStatus2;         /* 0x201c */
 325         volatile unsigned int InterruptEnable2;         /* 0x2020 */
 326         volatile unsigned int InterruptMonitor2;        /* 0x2024 */
 327         volatile unsigned int GpioControl2;             /* 0x2028 */
 328         volatile unsigned int InterruptBlock1;          /* 0x202c */
 329         volatile unsigned int InterruptBlock2;          /* 0x2030 */
 330 };
 331 typedef volatile struct evm_saa9730_regmap t_evm_saa9730_regmap;
 332
 333
 334 struct lan_saa9730_private {
 335         /*
 336          * Rx/Tx packet buffers.
 337          * The Rx and Tx packets must be PACKET_SIZE aligned.
 338          */
 339         void            *buffer_start;
 340         unsigned int    buffer_size;
 341
 342         /*
 343          * DMA address of beginning of this object, returned
 344          * by pci_alloc_consistent().
 345          */
 346         dma_addr_t      dma_addr;
 347
 348         /* Pointer to the associated pci device structure */
 349         struct pci_dev  *pci_dev;
 350
 351         /* Pointer for the SAA9730 LAN controller register set. */
 352         t_lan_saa9730_regmap *lan_saa9730_regs;
 353
 354         /* Pointer to the SAA9730 EVM register. */
 355         t_evm_saa9730_regmap *evm_saa9730_regs;
 356
 357         /* Rcv buffer Index. */
 358         unsigned char NextRcvPacketIndex;
 359         /* Next buffer index. */
 360         unsigned char NextRcvBufferIndex;
 361
 362         /* Index of next packet to use in that buffer. */
 363         unsigned char NextTxmPacketIndex;
 364         /* Next buffer index. */
 365         unsigned char NextTxmBufferIndex;
 366
 367         /* Index of first pending packet ready to send. */
 368         unsigned char PendingTxmPacketIndex;
 369         /* Pending buffer index. */
 370         unsigned char PendingTxmBufferIndex;
 371
 372         unsigned char DmaRcvPackets;
 373         unsigned char DmaTxmPackets;
 374
 375         void          *TxmBuffer[LAN_SAA9730_BUFFERS][LAN_SAA9730_TXM_Q_SIZE];
 376         void          *RcvBuffer[LAN_SAA9730_BUFFERS][LAN_SAA9730_RCV_Q_SIZE];
 377         unsigned int TxBufferFree[LAN_SAA9730_BUFFERS];
 378
 379         unsigned char PhysicalAddress[LAN_SAA9730_CAM_ENTRIES][6];
 380
 381         struct net_device_stats stats;
 382         spinlock_t lock;
 383 };
 384
 385 #endif /* _SAA9730_H */