1/* drivers/atm/uPD98401.h - NEC uPD98401 (SAR) declarations */ 2 3/* Written 1995 by Werner Almesberger, EPFL LRC */ 4 5 6#ifndef DRIVERS_ATM_uPD98401_H 7#define DRIVERS_ATM_uPD98401_H 8 9 10#define MAX_CRAM_SIZE (1 << 18) /* 2^18 words */ 11#define RAM_INCREMENT 1024 /* check in 4 kB increments */ 12 13#define uPD98401_PORTS 0x24 /* probably more ? */ 14 15 16/* 17 * Commands 18 */ 19 20#define uPD98401_OPEN_CHAN 0x20000000 /* open channel */ 21#define uPD98401_CHAN_ADDR 0x0003fff8 /* channel address */ 22#define uPD98401_CHAN_ADDR_SHIFT 3 23#define uPD98401_CLOSE_CHAN 0x24000000 /* close channel */ 24#define uPD98401_CHAN_RT 0x02000000 /* RX/TX (0 TX, 1 RX) */ 25#define uPD98401_DEACT_CHAN 0x28000000 /* deactivate channel */ 26#define uPD98401_TX_READY 0x30000000 /* TX ready */ 27#define uPD98401_ADD_BAT 0x34000000 /* add batches */ 28#define uPD98401_POOL 0x000f0000 /* pool number */ 29#define uPD98401_POOL_SHIFT 16 30#define uPD98401_POOL_NUMBAT 0x0000ffff /* number of batches */ 31#define uPD98401_NOP 0x3f000000 /* NOP */ 32#define uPD98401_IND_ACC 0x00000000 /* Indirect Access */ 33#define uPD98401_IA_RW 0x10000000 /* Read/Write (0 W, 1 R) */ 34#define uPD98401_IA_B3 0x08000000 /* Byte select, 1 enable */ 35#define uPD98401_IA_B2 0x04000000 36#define uPD98401_IA_B1 0x02000000 37#define uPD98401_IA_B0 0x01000000 38#define uPD98401_IA_BALL 0x0f000000 /* whole longword */ 39#define uPD98401_IA_TGT 0x000c0000 /* Target */ 40#define uPD98401_IA_TGT_SHIFT 18 41#define uPD98401_IA_TGT_CM 0 /* - Control Memory */ 42#define uPD98401_IA_TGT_SAR 1 /* - uPD98401 registers */ 43#define uPD98401_IA_TGT_PHY 3 /* - PHY device */ 44#define uPD98401_IA_ADDR 0x0003ffff 45 46/* 47 * Command Register Status 48 */ 49 50#define uPD98401_BUSY 0x80000000 /* SAR is busy */ 51#define uPD98401_LOCKED 0x40000000 /* SAR is locked by other CPU */ 52 53/* 54 * Indications 55 */ 56 57/* Normal (AAL5) Receive Indication */ 58#define uPD98401_AAL5_UINFO 0xffff0000 /* user-supplied information */ 59#define uPD98401_AAL5_UINFO_SHIFT 16 60#define uPD98401_AAL5_SIZE 0x0000ffff /* PDU size (in _CELLS_ !!) */ 61#define uPD98401_AAL5_CHAN 0x7fff0000 /* Channel number */ 62#define uPD98401_AAL5_CHAN_SHIFT 16 63#define uPD98401_AAL5_ERR 0x00008000 /* Error indication */ 64#define uPD98401_AAL5_CI 0x00004000 /* Congestion Indication */ 65#define uPD98401_AAL5_CLP 0x00002000 /* CLP (>= 1 cell had CLP=1) */ 66#define uPD98401_AAL5_ES 0x00000f00 /* Error Status */ 67#define uPD98401_AAL5_ES_SHIFT 8 68#define uPD98401_AAL5_ES_NONE 0 /* No error */ 69#define uPD98401_AAL5_ES_FREE 1 /* Receiver free buf underflow */ 70#define uPD98401_AAL5_ES_FIFO 2 /* Receiver FIFO overrun */ 71#define uPD98401_AAL5_ES_TOOBIG 3 /* Maximum length violation */ 72#define uPD98401_AAL5_ES_CRC 4 /* CRC error */ 73#define uPD98401_AAL5_ES_ABORT 5 /* User abort */ 74#define uPD98401_AAL5_ES_LENGTH 6 /* Length violation */ 75#define uPD98401_AAL5_ES_T1 7 /* T1 error (timeout) */ 76#define uPD98401_AAL5_ES_DEACT 8 /* Deactivated with DEACT_CHAN */ 77#define uPD98401_AAL5_POOL 0x0000001f /* Free buffer pool number */ 78 79/* Raw Cell Indication */ 80#define uPD98401_RAW_UINFO uPD98401_AAL5_UINFO 81#define uPD98401_RAW_UINFO_SHIFT uPD98401_AAL5_UINFO_SHIFT 82#define uPD98401_RAW_HEC 0x000000ff /* HEC */ 83#define uPD98401_RAW_CHAN uPD98401_AAL5_CHAN 84#define uPD98401_RAW_CHAN_SHIFT uPD98401_AAL5_CHAN_SHIFT 85 86/* Transmit Indication */ 87#define uPD98401_TXI_CONN 0x7fff0000 /* Connection Number */ 88#define uPD98401_TXI_CONN_SHIFT 16 89#define uPD98401_TXI_ACTIVE 0x00008000 /* Channel remains active */ 90#define uPD98401_TXI_PQP 0x00007fff /* Packet Queue Pointer */ 91 92/* 93 * Directly Addressable Registers 94 */ 95 96#define uPD98401_GMR 0x00 /* General Mode Register */ 97#define uPD98401_GSR 0x01 /* General Status Register */ 98#define uPD98401_IMR 0x02 /* Interrupt Mask Register */ 99#define uPD98401_RQU 0x03 /* Receive Queue Underrun */ 100#define uPD98401_RQA 0x04 /* Receive Queue Alert */ 101#define uPD98401_ADDR 0x05 /* Last Burst Address */ 102#define uPD98401_VER 0x06 /* Version Number */ 103#define uPD98401_SWR 0x07 /* Software Reset */ 104#define uPD98401_CMR 0x08 /* Command Register */ 105#define uPD98401_CMR_L 0x09 /* Command Register and Lock/Unlock */ 106#define uPD98401_CER 0x0a /* Command Extension Register */ 107#define uPD98401_CER_L 0x0b /* Command Ext Reg and Lock/Unlock */ 108 109#define uPD98401_MSH(n) (0x10+(n)) /* Mailbox n Start Address High */ 110#define uPD98401_MSL(n) (0x14+(n)) /* Mailbox n Start Address High */ 111#define uPD98401_MBA(n) (0x18+(n)) /* Mailbox n Bottom Address */ 112#define uPD98401_MTA(n) (0x1c+(n)) /* Mailbox n Tail Address */ 113#define uPD98401_MWA(n) (0x20+(n)) /* Mailbox n Write Address */ 114 115/* GMR is at 0x00 */ 116#define uPD98401_GMR_ONE 0x80000000 /* Must be set to one */ 117#define uPD98401_GMR_SLM 0x40000000 /* Address mode (0 word, 1 byte) */ 118#define uPD98401_GMR_CPE 0x00008000 /* Control Memory Parity Enable */ 119#define uPD98401_GMR_LP 0x00004000 /* Loopback */ 120#define uPD98401_GMR_WA 0x00002000 /* Early Bus Write Abort/RDY */ 121#define uPD98401_GMR_RA 0x00001000 /* Early Read Abort/RDY */ 122#define uPD98401_GMR_SZ 0x00000f00 /* Burst Size Enable */ 123#define uPD98401_BURST16 0x00000800 /* 16-word burst */ 124#define uPD98401_BURST8 0x00000400 /* 8-word burst */ 125#define uPD98401_BURST4 0x00000200 /* 4-word burst */ 126#define uPD98401_BURST2 0x00000100 /* 2-word burst */ 127#define uPD98401_GMR_AD 0x00000080 /* Address (burst resolution) Disable */ 128#define uPD98401_GMR_BO 0x00000040 /* Byte Order (0 little, 1 big) */ 129#define uPD98401_GMR_PM 0x00000020 /* Bus Parity Mode (0 byte, 1 word)*/ 130#define uPD98401_GMR_PC 0x00000010 /* Bus Parity Control (0even,1odd) */ 131#define uPD98401_GMR_BPE 0x00000008 /* Bus Parity Enable */ 132#define uPD98401_GMR_DR 0x00000004 /* Receive Drop Mode (0drop,1don't)*/ 133#define uPD98401_GMR_SE 0x00000002 /* Shapers Enable */ 134#define uPD98401_GMR_RE 0x00000001 /* Receiver Enable */ 135 136/* GSR is at 0x01, IMR is at 0x02 */ 137#define uPD98401_INT_PI 0x80000000 /* PHY interrupt */ 138#define uPD98401_INT_RQA 0x40000000 /* Receive Queue Alert */ 139#define uPD98401_INT_RQU 0x20000000 /* Receive Queue Underrun */ 140#define uPD98401_INT_RD 0x10000000 /* Receiver Deactivated */ 141#define uPD98401_INT_SPE 0x08000000 /* System Parity Error */ 142#define uPD98401_INT_CPE 0x04000000 /* Control Memory Parity Error */ 143#define uPD98401_INT_SBE 0x02000000 /* System Bus Error */ 144#define uPD98401_INT_IND 0x01000000 /* Initialization Done */ 145#define uPD98401_INT_RCR 0x0000ff00 /* Raw Cell Received */ 146#define uPD98401_INT_RCR_SHIFT 8 147#define uPD98401_INT_MF 0x000000f0 /* Mailbox Full */ 148#define uPD98401_INT_MF_SHIFT 4 149#define uPD98401_INT_MM 0x0000000f /* Mailbox Modified */ 150 151/* VER is at 0x06 */ 152#define uPD98401_MAJOR 0x0000ff00 /* Major revision */ 153#define uPD98401_MAJOR_SHIFT 8 154#define uPD98401_MINOR 0x000000ff /* Minor revision */ 155 156/* 157 * Indirectly Addressable Registers 158 */ 159 160#define uPD98401_IM(n) (0x40000+(n)) /* Scheduler n I and M */ 161#define uPD98401_X(n) (0x40010+(n)) /* Scheduler n X */ 162#define uPD98401_Y(n) (0x40020+(n)) /* Scheduler n Y */ 163#define uPD98401_PC(n) (0x40030+(n)) /* Scheduler n P, C, p and c */ 164#define uPD98401_PS(n) (0x40040+(n)) /* Scheduler n priority and status */ 165 166/* IM contents */ 167#define uPD98401_IM_I 0xff000000 /* I */ 168#define uPD98401_IM_I_SHIFT 24 169#define uPD98401_IM_M 0x00ffffff /* M */ 170 171/* PC contents */ 172#define uPD98401_PC_P 0xff000000 /* P */ 173#define uPD98401_PC_P_SHIFT 24 174#define uPD98401_PC_C 0x00ff0000 /* C */ 175#define uPD98401_PC_C_SHIFT 16 176#define uPD98401_PC_p 0x0000ff00 /* p */ 177#define uPD98401_PC_p_SHIFT 8 178#define uPD98401_PC_c 0x000000ff /* c */ 179 180/* PS contents */ 181#define uPD98401_PS_PRIO 0xf0 /* Priority level (0 high, 15 low) */ 182#define uPD98401_PS_PRIO_SHIFT 4 183#define uPD98401_PS_S 0x08 /* Scan - must be 0 (internal) */ 184#define uPD98401_PS_R 0x04 /* Round Robin (internal) */ 185#define uPD98401_PS_A 0x02 /* Active (internal) */ 186#define uPD98401_PS_E 0x01 /* Enabled */ 187 188#define uPD98401_TOS 0x40100 /* Top of Stack Control Memory Address */ 189#define uPD98401_SMA 0x40200 /* Shapers Control Memory Start Address */ 190#define uPD98401_PMA 0x40201 /* Receive Pool Control Memory Start Address */ 191#define uPD98401_T1R 0x40300 /* T1 Register */ 192#define uPD98401_VRR 0x40301 /* VPI/VCI Reduction Register/Recv. Shutdown */ 193#define uPD98401_TSR 0x40302 /* Time-Stamp Register */ 194 195/* VRR is at 0x40301 */ 196#define uPD98401_VRR_SDM 0x80000000 /* Shutdown Mode */ 197#define uPD98401_VRR_SHIFT 0x000f0000 /* VPI/VCI Shift */ 198#define uPD98401_VRR_SHIFT_SHIFT 16 199#define uPD98401_VRR_MASK 0x0000ffff /* VPI/VCI mask */ 200 201/* 202 * TX packet descriptor 203 */ 204 205#define uPD98401_TXPD_SIZE 16 /* descriptor size (in bytes) */ 206 207#define uPD98401_TXPD_V 0x80000000 /* Valid bit */ 208#define uPD98401_TXPD_DP 0x40000000 /* Descriptor (1) or Pointer (0) */ 209#define uPD98401_TXPD_SM 0x20000000 /* Single (1) or Multiple (0) */ 210#define uPD98401_TXPD_CLPM 0x18000000 /* CLP mode */ 211#define uPD98401_CLPM_0 0 /* 00 CLP = 0 */ 212#define uPD98401_CLPM_1 3 /* 11 CLP = 1 */ 213#define uPD98401_CLPM_LAST 1 /* 01 CLP unless last cell */ 214#define uPD98401_TXPD_CLPM_SHIFT 27 215#define uPD98401_TXPD_PTI 0x07000000 /* PTI pattern */ 216#define uPD98401_TXPD_PTI_SHIFT 24 217#define uPD98401_TXPD_GFC 0x00f00000 /* GFC pattern */ 218#define uPD98401_TXPD_GFC_SHIFT 20 219#define uPD98401_TXPD_C10 0x00040000 /* insert CRC-10 */ 220#define uPD98401_TXPD_AAL5 0x00020000 /* AAL5 processing */ 221#define uPD98401_TXPD_MB 0x00010000 /* TX mailbox number */ 222#define uPD98401_TXPD_UU 0x0000ff00 /* CPCS-UU */ 223#define uPD98401_TXPD_UU_SHIFT 8 224#define uPD98401_TXPD_CPI 0x000000ff /* CPI */ 225 226/* 227 * TX buffer descriptor 228 */ 229 230#define uPD98401_TXBD_SIZE 8 /* descriptor size (in bytes) */ 231 232#define uPD98401_TXBD_LAST 0x80000000 /* last buffer in packet */ 233 234/* 235 * TX VC table 236 */ 237 238/* 1st word has the same structure as in a TX packet descriptor */ 239#define uPD98401_TXVC_L 0x80000000 /* last buffer */ 240#define uPD98401_TXVC_SHP 0x0f000000 /* shaper number */ 241#define uPD98401_TXVC_SHP_SHIFT 24 242#define uPD98401_TXVC_VPI 0x00ff0000 /* VPI */ 243#define uPD98401_TXVC_VPI_SHIFT 16 244#define uPD98401_TXVC_VCI 0x0000ffff /* VCI */ 245#define uPD98401_TXVC_QRP 6 /* Queue Read Pointer is in word 6 */ 246 247/* 248 * RX free buffer pools descriptor 249 */ 250 251#define uPD98401_RXFP_ALERT 0x70000000 /* low water mark */ 252#define uPD98401_RXFP_ALERT_SHIFT 28 253#define uPD98401_RXFP_BFSZ 0x0f000000 /* buffer size, 64*2^n */ 254#define uPD98401_RXFP_BFSZ_SHIFT 24 255#define uPD98401_RXFP_BTSZ 0x00ff0000 /* batch size, n+1 */ 256#define uPD98401_RXFP_BTSZ_SHIFT 16 257#define uPD98401_RXFP_REMAIN 0x0000ffff /* remaining batches in pool */ 258 259/* 260 * RX VC table 261 */ 262 263#define uPD98401_RXVC_BTSZ 0xff000000 /* remaining free buffers in batch */ 264#define uPD98401_RXVC_BTSZ_SHIFT 24 265#define uPD98401_RXVC_MB 0x00200000 /* RX mailbox number */ 266#define uPD98401_RXVC_POOL 0x001f0000 /* free buffer pool number */ 267#define uPD98401_RXVC_POOL_SHIFT 16 268#define uPD98401_RXVC_UINFO 0x0000ffff /* user-supplied information */ 269#define uPD98401_RXVC_T1 0xffff0000 /* T1 timestamp */ 270#define uPD98401_RXVC_T1_SHIFT 16 271#define uPD98401_RXVC_PR 0x00008000 /* Packet Reception, 1 if busy */ 272#define uPD98401_RXVC_DR 0x00004000 /* FIFO Drop */ 273#define uPD98401_RXVC_OD 0x00001000 /* Drop OAM cells */ 274#define uPD98401_RXVC_AR 0x00000800 /* AAL5 or raw cell; 1 if AAL5 */ 275#define uPD98401_RXVC_MAXSEG 0x000007ff /* max number of segments per PDU */ 276#define uPD98401_RXVC_REM 0xfffe0000 /* remaining words in curr buffer */ 277#define uPD98401_RXVC_REM_SHIFT 17 278#define uPD98401_RXVC_CLP 0x00010000 /* CLP received */ 279#define uPD98401_RXVC_BFA 0x00008000 /* Buffer Assigned */ 280#define uPD98401_RXVC_BTA 0x00004000 /* Batch Assigned */ 281#define uPD98401_RXVC_CI 0x00002000 /* Congestion Indication */ 282#define uPD98401_RXVC_DD 0x00001000 /* Dropping incoming cells */ 283#define uPD98401_RXVC_DP 0x00000800 /* like PR ? */ 284#define uPD98401_RXVC_CURSEG 0x000007ff /* Current Segment count */ 285 286/* 287 * RX lookup table 288 */ 289 290#define uPD98401_RXLT_ENBL 0x8000 /* Enable */ 291 292#endif 293