1/* SPDX-License-Identifier: GPL-2.0 */ 2/* $Id: sunqe.h,v 1.13 2000/02/09 11:15:42 davem Exp $ 3 * sunqe.h: Definitions for the Sun QuadEthernet driver. 4 * 5 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) 6 */ 7 8#ifndef _SUNQE_H 9#define _SUNQE_H 10 11/* QEC global registers. */ 12#define GLOB_CTRL 0x00UL /* Control */ 13#define GLOB_STAT 0x04UL /* Status */ 14#define GLOB_PSIZE 0x08UL /* Packet Size */ 15#define GLOB_MSIZE 0x0cUL /* Local-memory Size */ 16#define GLOB_RSIZE 0x10UL /* Receive partition size */ 17#define GLOB_TSIZE 0x14UL /* Transmit partition size */ 18#define GLOB_REG_SIZE 0x18UL 19 20#define GLOB_CTRL_MMODE 0x40000000 /* MACE qec mode */ 21#define GLOB_CTRL_BMODE 0x10000000 /* BigMAC qec mode */ 22#define GLOB_CTRL_EPAR 0x00000020 /* Enable parity */ 23#define GLOB_CTRL_ACNTRL 0x00000018 /* SBUS arbitration control */ 24#define GLOB_CTRL_B64 0x00000004 /* 64 byte dvma bursts */ 25#define GLOB_CTRL_B32 0x00000002 /* 32 byte dvma bursts */ 26#define GLOB_CTRL_B16 0x00000000 /* 16 byte dvma bursts */ 27#define GLOB_CTRL_RESET 0x00000001 /* Reset the QEC */ 28 29#define GLOB_STAT_TX 0x00000008 /* BigMAC Transmit IRQ */ 30#define GLOB_STAT_RX 0x00000004 /* BigMAC Receive IRQ */ 31#define GLOB_STAT_BM 0x00000002 /* BigMAC Global IRQ */ 32#define GLOB_STAT_ER 0x00000001 /* BigMAC Error IRQ */ 33 34#define GLOB_PSIZE_2048 0x00 /* 2k packet size */ 35#define GLOB_PSIZE_4096 0x01 /* 4k packet size */ 36#define GLOB_PSIZE_6144 0x10 /* 6k packet size */ 37#define GLOB_PSIZE_8192 0x11 /* 8k packet size */ 38 39/* In MACE mode, there are four qe channels. Each channel has it's own 40 * status bits in the QEC status register. This macro picks out the 41 * ones you want. 42 */ 43#define GLOB_STAT_PER_QE(status, channel) (((status) >> ((channel) * 4)) & 0xf) 44 45/* The following registers are for per-qe channel information/status. */ 46#define CREG_CTRL 0x00UL /* Control */ 47#define CREG_STAT 0x04UL /* Status */ 48#define CREG_RXDS 0x08UL /* RX descriptor ring ptr */ 49#define CREG_TXDS 0x0cUL /* TX descriptor ring ptr */ 50#define CREG_RIMASK 0x10UL /* RX Interrupt Mask */ 51#define CREG_TIMASK 0x14UL /* TX Interrupt Mask */ 52#define CREG_QMASK 0x18UL /* QEC Error Interrupt Mask */ 53#define CREG_MMASK 0x1cUL /* MACE Error Interrupt Mask */ 54#define CREG_RXWBUFPTR 0x20UL /* Local memory rx write ptr */ 55#define CREG_RXRBUFPTR 0x24UL /* Local memory rx read ptr */ 56#define CREG_TXWBUFPTR 0x28UL /* Local memory tx write ptr */ 57#define CREG_TXRBUFPTR 0x2cUL /* Local memory tx read ptr */ 58#define CREG_CCNT 0x30UL /* Collision Counter */ 59#define CREG_PIPG 0x34UL /* Inter-Frame Gap */ 60#define CREG_REG_SIZE 0x38UL 61 62#define CREG_CTRL_RXOFF 0x00000004 /* Disable this qe's receiver*/ 63#define CREG_CTRL_RESET 0x00000002 /* Reset this qe channel */ 64#define CREG_CTRL_TWAKEUP 0x00000001 /* Transmitter Wakeup, 'go'. */ 65 66#define CREG_STAT_EDEFER 0x10000000 /* Excessive Defers */ 67#define CREG_STAT_CLOSS 0x08000000 /* Carrier Loss */ 68#define CREG_STAT_ERETRIES 0x04000000 /* More than 16 retries */ 69#define CREG_STAT_LCOLL 0x02000000 /* Late TX Collision */ 70#define CREG_STAT_FUFLOW 0x01000000 /* FIFO Underflow */ 71#define CREG_STAT_JERROR 0x00800000 /* Jabber Error */ 72#define CREG_STAT_BERROR 0x00400000 /* Babble Error */ 73#define CREG_STAT_TXIRQ 0x00200000 /* Transmit Interrupt */ 74#define CREG_STAT_CCOFLOW 0x00100000 /* TX Coll-counter Overflow */ 75#define CREG_STAT_TXDERROR 0x00080000 /* TX Descriptor is bogus */ 76#define CREG_STAT_TXLERR 0x00040000 /* Late Transmit Error */ 77#define CREG_STAT_TXPERR 0x00020000 /* Transmit Parity Error */ 78#define CREG_STAT_TXSERR 0x00010000 /* Transmit SBUS error ack */ 79#define CREG_STAT_RCCOFLOW 0x00001000 /* RX Coll-counter Overflow */ 80#define CREG_STAT_RUOFLOW 0x00000800 /* Runt Counter Overflow */ 81#define CREG_STAT_MCOFLOW 0x00000400 /* Missed Counter Overflow */ 82#define CREG_STAT_RXFOFLOW 0x00000200 /* RX FIFO Overflow */ 83#define CREG_STAT_RLCOLL 0x00000100 /* RX Late Collision */ 84#define CREG_STAT_FCOFLOW 0x00000080 /* Frame Counter Overflow */ 85#define CREG_STAT_CECOFLOW 0x00000040 /* CRC Error-counter Overflow*/ 86#define CREG_STAT_RXIRQ 0x00000020 /* Receive Interrupt */ 87#define CREG_STAT_RXDROP 0x00000010 /* Dropped a RX'd packet */ 88#define CREG_STAT_RXSMALL 0x00000008 /* Receive buffer too small */ 89#define CREG_STAT_RXLERR 0x00000004 /* Receive Late Error */ 90#define CREG_STAT_RXPERR 0x00000002 /* Receive Parity Error */ 91#define CREG_STAT_RXSERR 0x00000001 /* Receive SBUS Error ACK */ 92 93#define CREG_STAT_ERRORS (CREG_STAT_EDEFER|CREG_STAT_CLOSS|CREG_STAT_ERETRIES| \ 94 CREG_STAT_LCOLL|CREG_STAT_FUFLOW|CREG_STAT_JERROR| \ 95 CREG_STAT_BERROR|CREG_STAT_CCOFLOW|CREG_STAT_TXDERROR| \ 96 CREG_STAT_TXLERR|CREG_STAT_TXPERR|CREG_STAT_TXSERR| \ 97 CREG_STAT_RCCOFLOW|CREG_STAT_RUOFLOW|CREG_STAT_MCOFLOW| \ 98 CREG_STAT_RXFOFLOW|CREG_STAT_RLCOLL|CREG_STAT_FCOFLOW| \ 99 CREG_STAT_CECOFLOW|CREG_STAT_RXDROP|CREG_STAT_RXSMALL| \ 100 CREG_STAT_RXLERR|CREG_STAT_RXPERR|CREG_STAT_RXSERR) 101 102#define CREG_QMASK_COFLOW 0x00100000 /* CollCntr overflow */ 103#define CREG_QMASK_TXDERROR 0x00080000 /* TXD error */ 104#define CREG_QMASK_TXLERR 0x00040000 /* TX late error */ 105#define CREG_QMASK_TXPERR 0x00020000 /* TX parity error */ 106#define CREG_QMASK_TXSERR 0x00010000 /* TX sbus error ack */ 107#define CREG_QMASK_RXDROP 0x00000010 /* RX drop */ 108#define CREG_QMASK_RXBERROR 0x00000008 /* RX buffer error */ 109#define CREG_QMASK_RXLEERR 0x00000004 /* RX late error */ 110#define CREG_QMASK_RXPERR 0x00000002 /* RX parity error */ 111#define CREG_QMASK_RXSERR 0x00000001 /* RX sbus error ack */ 112 113#define CREG_MMASK_EDEFER 0x10000000 /* Excess defer */ 114#define CREG_MMASK_CLOSS 0x08000000 /* Carrier loss */ 115#define CREG_MMASK_ERETRY 0x04000000 /* Excess retry */ 116#define CREG_MMASK_LCOLL 0x02000000 /* Late collision error */ 117#define CREG_MMASK_UFLOW 0x01000000 /* Underflow */ 118#define CREG_MMASK_JABBER 0x00800000 /* Jabber error */ 119#define CREG_MMASK_BABBLE 0x00400000 /* Babble error */ 120#define CREG_MMASK_OFLOW 0x00000800 /* Overflow */ 121#define CREG_MMASK_RXCOLL 0x00000400 /* RX Coll-Cntr overflow */ 122#define CREG_MMASK_RPKT 0x00000200 /* Runt pkt overflow */ 123#define CREG_MMASK_MPKT 0x00000100 /* Missed pkt overflow */ 124 125#define CREG_PIPG_TENAB 0x00000020 /* Enable Throttle */ 126#define CREG_PIPG_MMODE 0x00000010 /* Manual Mode */ 127#define CREG_PIPG_WMASK 0x0000000f /* SBUS Wait Mask */ 128 129/* Per-channel AMD 79C940 MACE registers. */ 130#define MREGS_RXFIFO 0x00UL /* Receive FIFO */ 131#define MREGS_TXFIFO 0x01UL /* Transmit FIFO */ 132#define MREGS_TXFCNTL 0x02UL /* Transmit Frame Control */ 133#define MREGS_TXFSTAT 0x03UL /* Transmit Frame Status */ 134#define MREGS_TXRCNT 0x04UL /* Transmit Retry Count */ 135#define MREGS_RXFCNTL 0x05UL /* Receive Frame Control */ 136#define MREGS_RXFSTAT 0x06UL /* Receive Frame Status */ 137#define MREGS_FFCNT 0x07UL /* FIFO Frame Count */ 138#define MREGS_IREG 0x08UL /* Interrupt Register */ 139#define MREGS_IMASK 0x09UL /* Interrupt Mask */ 140#define MREGS_POLL 0x0aUL /* POLL Register */ 141#define MREGS_BCONFIG 0x0bUL /* BIU Config */ 142#define MREGS_FCONFIG 0x0cUL /* FIFO Config */ 143#define MREGS_MCONFIG 0x0dUL /* MAC Config */ 144#define MREGS_PLSCONFIG 0x0eUL /* PLS Config */ 145#define MREGS_PHYCONFIG 0x0fUL /* PHY Config */ 146#define MREGS_CHIPID1 0x10UL /* Chip-ID, low bits */ 147#define MREGS_CHIPID2 0x11UL /* Chip-ID, high bits */ 148#define MREGS_IACONFIG 0x12UL /* Internal Address Config */ 149 /* 0x13UL, reserved */ 150#define MREGS_FILTER 0x14UL /* Logical Address Filter */ 151#define MREGS_ETHADDR 0x15UL /* Our Ethernet Address */ 152 /* 0x16UL, reserved */ 153 /* 0x17UL, reserved */ 154#define MREGS_MPCNT 0x18UL /* Missed Packet Count */ 155 /* 0x19UL, reserved */ 156#define MREGS_RPCNT 0x1aUL /* Runt Packet Count */ 157#define MREGS_RCCNT 0x1bUL /* RX Collision Count */ 158 /* 0x1cUL, reserved */ 159#define MREGS_UTEST 0x1dUL /* User Test */ 160#define MREGS_RTEST1 0x1eUL /* Reserved Test 1 */ 161#define MREGS_RTEST2 0x1fUL /* Reserved Test 2 */ 162#define MREGS_REG_SIZE 0x20UL 163 164#define MREGS_TXFCNTL_DRETRY 0x80 /* Retry disable */ 165#define MREGS_TXFCNTL_DFCS 0x08 /* Disable TX FCS */ 166#define MREGS_TXFCNTL_AUTOPAD 0x01 /* TX auto pad */ 167 168#define MREGS_TXFSTAT_VALID 0x80 /* TX valid */ 169#define MREGS_TXFSTAT_UNDERFLOW 0x40 /* TX underflow */ 170#define MREGS_TXFSTAT_LCOLL 0x20 /* TX late collision */ 171#define MREGS_TXFSTAT_MRETRY 0x10 /* TX > 1 retries */ 172#define MREGS_TXFSTAT_ORETRY 0x08 /* TX 1 retry */ 173#define MREGS_TXFSTAT_PDEFER 0x04 /* TX pkt deferred */ 174#define MREGS_TXFSTAT_CLOSS 0x02 /* TX carrier lost */ 175#define MREGS_TXFSTAT_RERROR 0x01 /* TX retry error */ 176 177#define MREGS_TXRCNT_EDEFER 0x80 /* TX Excess defers */ 178#define MREGS_TXRCNT_CMASK 0x0f /* TX retry count */ 179 180#define MREGS_RXFCNTL_LOWLAT 0x08 /* RX low latency */ 181#define MREGS_RXFCNTL_AREJECT 0x04 /* RX addr match rej */ 182#define MREGS_RXFCNTL_AUTOSTRIP 0x01 /* RX auto strip */ 183 184#define MREGS_RXFSTAT_OVERFLOW 0x80 /* RX overflow */ 185#define MREGS_RXFSTAT_LCOLL 0x40 /* RX late collision */ 186#define MREGS_RXFSTAT_FERROR 0x20 /* RX framing error */ 187#define MREGS_RXFSTAT_FCSERROR 0x10 /* RX FCS error */ 188#define MREGS_RXFSTAT_RBCNT 0x0f /* RX msg byte count */ 189 190#define MREGS_FFCNT_RX 0xf0 /* RX FIFO frame cnt */ 191#define MREGS_FFCNT_TX 0x0f /* TX FIFO frame cnt */ 192 193#define MREGS_IREG_JABBER 0x80 /* IRQ Jabber error */ 194#define MREGS_IREG_BABBLE 0x40 /* IRQ Babble error */ 195#define MREGS_IREG_COLL 0x20 /* IRQ Collision error */ 196#define MREGS_IREG_RCCO 0x10 /* IRQ Collision cnt overflow */ 197#define MREGS_IREG_RPKTCO 0x08 /* IRQ Runt packet count overflow */ 198#define MREGS_IREG_MPKTCO 0x04 /* IRQ missed packet cnt overflow */ 199#define MREGS_IREG_RXIRQ 0x02 /* IRQ RX'd a packet */ 200#define MREGS_IREG_TXIRQ 0x01 /* IRQ TX'd a packet */ 201 202#define MREGS_IMASK_BABBLE 0x40 /* IMASK Babble errors */ 203#define MREGS_IMASK_COLL 0x20 /* IMASK Collision errors */ 204#define MREGS_IMASK_MPKTCO 0x04 /* IMASK Missed pkt cnt overflow */ 205#define MREGS_IMASK_RXIRQ 0x02 /* IMASK RX interrupts */ 206#define MREGS_IMASK_TXIRQ 0x01 /* IMASK TX interrupts */ 207 208#define MREGS_POLL_TXVALID 0x80 /* TX is valid */ 209#define MREGS_POLL_TDTR 0x40 /* TX data transfer request */ 210#define MREGS_POLL_RDTR 0x20 /* RX data transfer request */ 211 212#define MREGS_BCONFIG_BSWAP 0x40 /* Byte Swap */ 213#define MREGS_BCONFIG_4TS 0x00 /* 4byte transmit start point */ 214#define MREGS_BCONFIG_16TS 0x10 /* 16byte transmit start point */ 215#define MREGS_BCONFIG_64TS 0x20 /* 64byte transmit start point */ 216#define MREGS_BCONFIG_112TS 0x30 /* 112byte transmit start point */ 217#define MREGS_BCONFIG_RESET 0x01 /* SW-Reset the MACE */ 218 219#define MREGS_FCONFIG_TXF8 0x00 /* TX fifo 8 write cycles */ 220#define MREGS_FCONFIG_TXF32 0x80 /* TX fifo 32 write cycles */ 221#define MREGS_FCONFIG_TXF16 0x40 /* TX fifo 16 write cycles */ 222#define MREGS_FCONFIG_RXF64 0x20 /* RX fifo 64 write cycles */ 223#define MREGS_FCONFIG_RXF32 0x10 /* RX fifo 32 write cycles */ 224#define MREGS_FCONFIG_RXF16 0x00 /* RX fifo 16 write cycles */ 225#define MREGS_FCONFIG_TFWU 0x08 /* TX fifo watermark update */ 226#define MREGS_FCONFIG_RFWU 0x04 /* RX fifo watermark update */ 227#define MREGS_FCONFIG_TBENAB 0x02 /* TX burst enable */ 228#define MREGS_FCONFIG_RBENAB 0x01 /* RX burst enable */ 229 230#define MREGS_MCONFIG_PROMISC 0x80 /* Promiscuous mode enable */ 231#define MREGS_MCONFIG_TPDDISAB 0x40 /* TX 2part deferral enable */ 232#define MREGS_MCONFIG_MBAENAB 0x20 /* Modified backoff enable */ 233#define MREGS_MCONFIG_RPADISAB 0x08 /* RX physical addr disable */ 234#define MREGS_MCONFIG_RBDISAB 0x04 /* RX broadcast disable */ 235#define MREGS_MCONFIG_TXENAB 0x02 /* Enable transmitter */ 236#define MREGS_MCONFIG_RXENAB 0x01 /* Enable receiver */ 237 238#define MREGS_PLSCONFIG_TXMS 0x08 /* TX mode select */ 239#define MREGS_PLSCONFIG_GPSI 0x06 /* Use GPSI connector */ 240#define MREGS_PLSCONFIG_DAI 0x04 /* Use DAI connector */ 241#define MREGS_PLSCONFIG_TP 0x02 /* Use TwistedPair connector */ 242#define MREGS_PLSCONFIG_AUI 0x00 /* Use AUI connector */ 243#define MREGS_PLSCONFIG_IOENAB 0x01 /* PLS I/O enable */ 244 245#define MREGS_PHYCONFIG_LSTAT 0x80 /* Link status */ 246#define MREGS_PHYCONFIG_LTESTDIS 0x40 /* Disable link test logic */ 247#define MREGS_PHYCONFIG_RXPOLARITY 0x20 /* RX polarity */ 248#define MREGS_PHYCONFIG_APCDISAB 0x10 /* AutoPolarityCorrect disab */ 249#define MREGS_PHYCONFIG_LTENAB 0x08 /* Select low threshold */ 250#define MREGS_PHYCONFIG_AUTO 0x04 /* Connector port auto-sel */ 251#define MREGS_PHYCONFIG_RWU 0x02 /* Remote WakeUp */ 252#define MREGS_PHYCONFIG_AW 0x01 /* Auto Wakeup */ 253 254#define MREGS_IACONFIG_ACHNGE 0x80 /* Do address change */ 255#define MREGS_IACONFIG_PARESET 0x04 /* Physical address reset */ 256#define MREGS_IACONFIG_LARESET 0x02 /* Logical address reset */ 257 258#define MREGS_UTEST_RTRENAB 0x80 /* Enable resv test register */ 259#define MREGS_UTEST_RTRDISAB 0x40 /* Disab resv test register */ 260#define MREGS_UTEST_RPACCEPT 0x20 /* Accept runt packets */ 261#define MREGS_UTEST_FCOLL 0x10 /* Force collision status */ 262#define MREGS_UTEST_FCSENAB 0x08 /* Enable FCS on RX */ 263#define MREGS_UTEST_INTLOOPM 0x06 /* Intern lpback w/MENDEC */ 264#define MREGS_UTEST_INTLOOP 0x04 /* Intern lpback */ 265#define MREGS_UTEST_EXTLOOP 0x02 /* Extern lpback */ 266#define MREGS_UTEST_NOLOOP 0x00 /* No loopback */ 267 268struct qe_rxd { 269 u32 rx_flags; 270 u32 rx_addr; 271}; 272 273#define RXD_OWN 0x80000000 /* Ownership. */ 274#define RXD_UPDATE 0x10000000 /* Being Updated? */ 275#define RXD_LENGTH 0x000007ff /* Packet Length. */ 276 277struct qe_txd { 278 u32 tx_flags; 279 u32 tx_addr; 280}; 281 282#define TXD_OWN 0x80000000 /* Ownership. */ 283#define TXD_SOP 0x40000000 /* Start Of Packet */ 284#define TXD_EOP 0x20000000 /* End Of Packet */ 285#define TXD_UPDATE 0x10000000 /* Being Updated? */ 286#define TXD_LENGTH 0x000007ff /* Packet Length. */ 287 288#define TX_RING_MAXSIZE 256 289#define RX_RING_MAXSIZE 256 290 291#define TX_RING_SIZE 16 292#define RX_RING_SIZE 16 293 294#define NEXT_RX(num) (((num) + 1) & (RX_RING_MAXSIZE - 1)) 295#define NEXT_TX(num) (((num) + 1) & (TX_RING_MAXSIZE - 1)) 296#define PREV_RX(num) (((num) - 1) & (RX_RING_MAXSIZE - 1)) 297#define PREV_TX(num) (((num) - 1) & (TX_RING_MAXSIZE - 1)) 298 299#define TX_BUFFS_AVAIL(qp) \ 300 (((qp)->tx_old <= (qp)->tx_new) ? \ 301 (qp)->tx_old + (TX_RING_SIZE - 1) - (qp)->tx_new : \ 302 (qp)->tx_old - (qp)->tx_new - 1) 303 304struct qe_init_block { 305 struct qe_rxd qe_rxd[RX_RING_MAXSIZE]; 306 struct qe_txd qe_txd[TX_RING_MAXSIZE]; 307}; 308 309#define qib_offset(mem, elem) \ 310((__u32)((unsigned long)(&(((struct qe_init_block *)0)->mem[elem])))) 311 312struct sunqe; 313 314struct sunqec { 315 void __iomem *gregs; /* QEC Global Registers */ 316 struct sunqe *qes[4]; /* Each child MACE */ 317 unsigned int qec_bursts; /* Support burst sizes */ 318 struct platform_device *op; /* QEC's OF device */ 319 struct sunqec *next_module; /* List of all QECs in system */ 320}; 321 322#define PKT_BUF_SZ 1664 323#define RXD_PKT_SZ 1664 324 325struct sunqe_buffers { 326 u8 tx_buf[TX_RING_SIZE][PKT_BUF_SZ]; 327 u8 __pad[2]; 328 u8 rx_buf[RX_RING_SIZE][PKT_BUF_SZ]; 329}; 330 331#define qebuf_offset(mem, elem) \ 332((__u32)((unsigned long)(&(((struct sunqe_buffers *)0)->mem[elem][0])))) 333 334struct sunqe { 335 void __iomem *qcregs; /* QEC per-channel Registers */ 336 void __iomem *mregs; /* Per-channel MACE Registers */ 337 struct qe_init_block *qe_block; /* RX and TX descriptors */ 338 dma_addr_t qblock_dvma; /* RX and TX descriptors */ 339 spinlock_t lock; /* Protects txfull state */ 340 int rx_new, rx_old; /* RX ring extents */ 341 int tx_new, tx_old; /* TX ring extents */ 342 struct sunqe_buffers *buffers; /* CPU visible address. */ 343 dma_addr_t buffers_dvma; /* DVMA visible address. */ 344 struct sunqec *parent; 345 u8 mconfig; /* Base MACE mconfig value */ 346 struct platform_device *op; /* QE's OF device struct */ 347 struct net_device *dev; /* QE's netdevice struct */ 348 int channel; /* Who am I? */ 349}; 350 351#endif /* !(_SUNQE_H) */ 352