1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* $Id: sunhme.h,v 1.33 2001/08/03 06:23:04 davem Exp $ 3 * sunhme.h: Definitions for Sparc HME/BigMac 10/100baseT ethernet driver. 4 * Also known as the "Happy Meal". 5 * 6 * Copyright (C) 1996, 1999 David S. Miller (davem@redhat.com) 7 */ 8 9 #ifndef _SUNHME_H 10 #define _SUNHME_H 11 12 #include <linux/pci.h> 13 14 /* Happy Meal global registers. */ 15 #define GREG_SWRESET 0x000UL /* Software Reset */ 16 #define GREG_CFG 0x004UL /* Config Register */ 17 #define GREG_STAT 0x100UL /* Status */ 18 #define GREG_IMASK 0x104UL /* Interrupt Mask */ 19 #define GREG_REG_SIZE 0x108UL 20 21 /* Global reset register. */ 22 #define GREG_RESET_ETX 0x01 23 #define GREG_RESET_ERX 0x02 24 #define GREG_RESET_ALL 0x03 25 26 /* Global config register. */ 27 #define GREG_CFG_BURSTMSK 0x03 28 #define GREG_CFG_BURST16 0x00 29 #define GREG_CFG_BURST32 0x01 30 #define GREG_CFG_BURST64 0x02 31 #define GREG_CFG_64BIT 0x04 32 #define GREG_CFG_PARITY 0x08 33 #define GREG_CFG_RESV 0x10 34 35 /* Global status register. */ 36 #define GREG_STAT_GOTFRAME 0x00000001 /* Received a frame */ 37 #define GREG_STAT_RCNTEXP 0x00000002 /* Receive frame counter expired */ 38 #define GREG_STAT_ACNTEXP 0x00000004 /* Align-error counter expired */ 39 #define GREG_STAT_CCNTEXP 0x00000008 /* CRC-error counter expired */ 40 #define GREG_STAT_LCNTEXP 0x00000010 /* Length-error counter expired */ 41 #define GREG_STAT_RFIFOVF 0x00000020 /* Receive FIFO overflow */ 42 #define GREG_STAT_CVCNTEXP 0x00000040 /* Code-violation counter expired */ 43 #define GREG_STAT_STSTERR 0x00000080 /* Test error in XIF for SQE */ 44 #define GREG_STAT_SENTFRAME 0x00000100 /* Transmitted a frame */ 45 #define GREG_STAT_TFIFO_UND 0x00000200 /* Transmit FIFO underrun */ 46 #define GREG_STAT_MAXPKTERR 0x00000400 /* Max-packet size error */ 47 #define GREG_STAT_NCNTEXP 0x00000800 /* Normal-collision counter expired */ 48 #define GREG_STAT_ECNTEXP 0x00001000 /* Excess-collision counter expired */ 49 #define GREG_STAT_LCCNTEXP 0x00002000 /* Late-collision counter expired */ 50 #define GREG_STAT_FCNTEXP 0x00004000 /* First-collision counter expired */ 51 #define GREG_STAT_DTIMEXP 0x00008000 /* Defer-timer expired */ 52 #define GREG_STAT_RXTOHOST 0x00010000 /* Moved from receive-FIFO to host memory */ 53 #define GREG_STAT_NORXD 0x00020000 /* No more receive descriptors */ 54 #define GREG_STAT_RXERR 0x00040000 /* Error during receive dma */ 55 #define GREG_STAT_RXLATERR 0x00080000 /* Late error during receive dma */ 56 #define GREG_STAT_RXPERR 0x00100000 /* Parity error during receive dma */ 57 #define GREG_STAT_RXTERR 0x00200000 /* Tag error during receive dma */ 58 #define GREG_STAT_EOPERR 0x00400000 /* Transmit descriptor did not have EOP set */ 59 #define GREG_STAT_MIFIRQ 0x00800000 /* MIF is signaling an interrupt condition */ 60 #define GREG_STAT_HOSTTOTX 0x01000000 /* Moved from host memory to transmit-FIFO */ 61 #define GREG_STAT_TXALL 0x02000000 /* Transmitted all packets in the tx-fifo */ 62 #define GREG_STAT_TXEACK 0x04000000 /* Error during transmit dma */ 63 #define GREG_STAT_TXLERR 0x08000000 /* Late error during transmit dma */ 64 #define GREG_STAT_TXPERR 0x10000000 /* Parity error during transmit dma */ 65 #define GREG_STAT_TXTERR 0x20000000 /* Tag error during transmit dma */ 66 #define GREG_STAT_SLVERR 0x40000000 /* PIO access got an error */ 67 #define GREG_STAT_SLVPERR 0x80000000 /* PIO access got a parity error */ 68 69 /* All interesting error conditions. */ 70 #define GREG_STAT_ERRORS 0xfc7efefc 71 72 /* Global interrupt mask register. */ 73 #define GREG_IMASK_GOTFRAME 0x00000001 /* Received a frame */ 74 #define GREG_IMASK_RCNTEXP 0x00000002 /* Receive frame counter expired */ 75 #define GREG_IMASK_ACNTEXP 0x00000004 /* Align-error counter expired */ 76 #define GREG_IMASK_CCNTEXP 0x00000008 /* CRC-error counter expired */ 77 #define GREG_IMASK_LCNTEXP 0x00000010 /* Length-error counter expired */ 78 #define GREG_IMASK_RFIFOVF 0x00000020 /* Receive FIFO overflow */ 79 #define GREG_IMASK_CVCNTEXP 0x00000040 /* Code-violation counter expired */ 80 #define GREG_IMASK_STSTERR 0x00000080 /* Test error in XIF for SQE */ 81 #define GREG_IMASK_SENTFRAME 0x00000100 /* Transmitted a frame */ 82 #define GREG_IMASK_TFIFO_UND 0x00000200 /* Transmit FIFO underrun */ 83 #define GREG_IMASK_MAXPKTERR 0x00000400 /* Max-packet size error */ 84 #define GREG_IMASK_NCNTEXP 0x00000800 /* Normal-collision counter expired */ 85 #define GREG_IMASK_ECNTEXP 0x00001000 /* Excess-collision counter expired */ 86 #define GREG_IMASK_LCCNTEXP 0x00002000 /* Late-collision counter expired */ 87 #define GREG_IMASK_FCNTEXP 0x00004000 /* First-collision counter expired */ 88 #define GREG_IMASK_DTIMEXP 0x00008000 /* Defer-timer expired */ 89 #define GREG_IMASK_RXTOHOST 0x00010000 /* Moved from receive-FIFO to host memory */ 90 #define GREG_IMASK_NORXD 0x00020000 /* No more receive descriptors */ 91 #define GREG_IMASK_RXERR 0x00040000 /* Error during receive dma */ 92 #define GREG_IMASK_RXLATERR 0x00080000 /* Late error during receive dma */ 93 #define GREG_IMASK_RXPERR 0x00100000 /* Parity error during receive dma */ 94 #define GREG_IMASK_RXTERR 0x00200000 /* Tag error during receive dma */ 95 #define GREG_IMASK_EOPERR 0x00400000 /* Transmit descriptor did not have EOP set */ 96 #define GREG_IMASK_MIFIRQ 0x00800000 /* MIF is signaling an interrupt condition */ 97 #define GREG_IMASK_HOSTTOTX 0x01000000 /* Moved from host memory to transmit-FIFO */ 98 #define GREG_IMASK_TXALL 0x02000000 /* Transmitted all packets in the tx-fifo */ 99 #define GREG_IMASK_TXEACK 0x04000000 /* Error during transmit dma */ 100 #define GREG_IMASK_TXLERR 0x08000000 /* Late error during transmit dma */ 101 #define GREG_IMASK_TXPERR 0x10000000 /* Parity error during transmit dma */ 102 #define GREG_IMASK_TXTERR 0x20000000 /* Tag error during transmit dma */ 103 #define GREG_IMASK_SLVERR 0x40000000 /* PIO access got an error */ 104 #define GREG_IMASK_SLVPERR 0x80000000 /* PIO access got a parity error */ 105 106 /* Happy Meal external transmitter registers. */ 107 #define ETX_PENDING 0x00UL /* Transmit pending/wakeup register */ 108 #define ETX_CFG 0x04UL /* Transmit config register */ 109 #define ETX_RING 0x08UL /* Transmit ring pointer */ 110 #define ETX_BBASE 0x0cUL /* Transmit buffer base */ 111 #define ETX_BDISP 0x10UL /* Transmit buffer displacement */ 112 #define ETX_FIFOWPTR 0x14UL /* FIFO write ptr */ 113 #define ETX_FIFOSWPTR 0x18UL /* FIFO write ptr (shadow register) */ 114 #define ETX_FIFORPTR 0x1cUL /* FIFO read ptr */ 115 #define ETX_FIFOSRPTR 0x20UL /* FIFO read ptr (shadow register) */ 116 #define ETX_FIFOPCNT 0x24UL /* FIFO packet counter */ 117 #define ETX_SMACHINE 0x28UL /* Transmitter state machine */ 118 #define ETX_RSIZE 0x2cUL /* Ring descriptor size */ 119 #define ETX_BPTR 0x30UL /* Transmit data buffer ptr */ 120 #define ETX_REG_SIZE 0x34UL 121 122 /* ETX transmit pending register. */ 123 #define ETX_TP_DMAWAKEUP 0x00000001 /* Restart transmit dma */ 124 125 /* ETX config register. */ 126 #define ETX_CFG_DMAENABLE 0x00000001 /* Enable transmit dma */ 127 #define ETX_CFG_FIFOTHRESH 0x000003fe /* Transmit FIFO threshold */ 128 #define ETX_CFG_IRQDAFTER 0x00000400 /* Interrupt after TX-FIFO drained */ 129 #define ETX_CFG_IRQDBEFORE 0x00000000 /* Interrupt before TX-FIFO drained */ 130 131 #define ETX_RSIZE_SHIFT 4 132 133 /* Happy Meal external receiver registers. */ 134 #define ERX_CFG 0x00UL /* Receiver config register */ 135 #define ERX_RING 0x04UL /* Receiver ring ptr */ 136 #define ERX_BPTR 0x08UL /* Receiver buffer ptr */ 137 #define ERX_FIFOWPTR 0x0cUL /* FIFO write ptr */ 138 #define ERX_FIFOSWPTR 0x10UL /* FIFO write ptr (shadow register) */ 139 #define ERX_FIFORPTR 0x14UL /* FIFO read ptr */ 140 #define ERX_FIFOSRPTR 0x18UL /* FIFO read ptr (shadow register) */ 141 #define ERX_SMACHINE 0x1cUL /* Receiver state machine */ 142 #define ERX_REG_SIZE 0x20UL 143 144 /* ERX config register. */ 145 #define ERX_CFG_DMAENABLE 0x00000001 /* Enable receive DMA */ 146 #define ERX_CFG_RESV1 0x00000006 /* Unused... */ 147 #define ERX_CFG_BYTEOFFSET 0x00000038 /* Receive first byte offset */ 148 #define ERX_CFG_RESV2 0x000001c0 /* Unused... */ 149 #define ERX_CFG_SIZE32 0x00000000 /* Receive ring size == 32 */ 150 #define ERX_CFG_SIZE64 0x00000200 /* Receive ring size == 64 */ 151 #define ERX_CFG_SIZE128 0x00000400 /* Receive ring size == 128 */ 152 #define ERX_CFG_SIZE256 0x00000600 /* Receive ring size == 256 */ 153 #define ERX_CFG_RESV3 0x0000f800 /* Unused... */ 154 #define ERX_CFG_CSUMSTART 0x007f0000 /* Offset of checksum start, 155 * in halfwords. */ 156 157 /* I'd like a Big Mac, small fries, small coke, and SparcLinux please. */ 158 #define BMAC_XIFCFG 0x0000UL /* XIF config register */ 159 /* 0x4-->0x204, reserved */ 160 #define BMAC_TXSWRESET 0x208UL /* Transmitter software reset */ 161 #define BMAC_TXCFG 0x20cUL /* Transmitter config register */ 162 #define BMAC_IGAP1 0x210UL /* Inter-packet gap 1 */ 163 #define BMAC_IGAP2 0x214UL /* Inter-packet gap 2 */ 164 #define BMAC_ALIMIT 0x218UL /* Transmit attempt limit */ 165 #define BMAC_STIME 0x21cUL /* Transmit slot time */ 166 #define BMAC_PLEN 0x220UL /* Size of transmit preamble */ 167 #define BMAC_PPAT 0x224UL /* Pattern for transmit preamble */ 168 #define BMAC_TXSDELIM 0x228UL /* Transmit delimiter */ 169 #define BMAC_JSIZE 0x22cUL /* Jam size */ 170 #define BMAC_TXMAX 0x230UL /* Transmit max pkt size */ 171 #define BMAC_TXMIN 0x234UL /* Transmit min pkt size */ 172 #define BMAC_PATTEMPT 0x238UL /* Count of transmit peak attempts */ 173 #define BMAC_DTCTR 0x23cUL /* Transmit defer timer */ 174 #define BMAC_NCCTR 0x240UL /* Transmit normal-collision counter */ 175 #define BMAC_FCCTR 0x244UL /* Transmit first-collision counter */ 176 #define BMAC_EXCTR 0x248UL /* Transmit excess-collision counter */ 177 #define BMAC_LTCTR 0x24cUL /* Transmit late-collision counter */ 178 #define BMAC_RSEED 0x250UL /* Transmit random number seed */ 179 #define BMAC_TXSMACHINE 0x254UL /* Transmit state machine */ 180 /* 0x258-->0x304, reserved */ 181 #define BMAC_RXSWRESET 0x308UL /* Receiver software reset */ 182 #define BMAC_RXCFG 0x30cUL /* Receiver config register */ 183 #define BMAC_RXMAX 0x310UL /* Receive max pkt size */ 184 #define BMAC_RXMIN 0x314UL /* Receive min pkt size */ 185 #define BMAC_MACADDR2 0x318UL /* Ether address register 2 */ 186 #define BMAC_MACADDR1 0x31cUL /* Ether address register 1 */ 187 #define BMAC_MACADDR0 0x320UL /* Ether address register 0 */ 188 #define BMAC_FRCTR 0x324UL /* Receive frame receive counter */ 189 #define BMAC_GLECTR 0x328UL /* Receive giant-length error counter */ 190 #define BMAC_UNALECTR 0x32cUL /* Receive unaligned error counter */ 191 #define BMAC_RCRCECTR 0x330UL /* Receive CRC error counter */ 192 #define BMAC_RXSMACHINE 0x334UL /* Receiver state machine */ 193 #define BMAC_RXCVALID 0x338UL /* Receiver code violation */ 194 /* 0x33c, reserved */ 195 #define BMAC_HTABLE3 0x340UL /* Hash table 3 */ 196 #define BMAC_HTABLE2 0x344UL /* Hash table 2 */ 197 #define BMAC_HTABLE1 0x348UL /* Hash table 1 */ 198 #define BMAC_HTABLE0 0x34cUL /* Hash table 0 */ 199 #define BMAC_AFILTER2 0x350UL /* Address filter 2 */ 200 #define BMAC_AFILTER1 0x354UL /* Address filter 1 */ 201 #define BMAC_AFILTER0 0x358UL /* Address filter 0 */ 202 #define BMAC_AFMASK 0x35cUL /* Address filter mask */ 203 #define BMAC_REG_SIZE 0x360UL 204 205 /* BigMac XIF config register. */ 206 #define BIGMAC_XCFG_ODENABLE 0x00000001 /* Output driver enable */ 207 #define BIGMAC_XCFG_XLBACK 0x00000002 /* Loopback-mode XIF enable */ 208 #define BIGMAC_XCFG_MLBACK 0x00000004 /* Loopback-mode MII enable */ 209 #define BIGMAC_XCFG_MIIDISAB 0x00000008 /* MII receive buffer disable */ 210 #define BIGMAC_XCFG_SQENABLE 0x00000010 /* SQE test enable */ 211 #define BIGMAC_XCFG_SQETWIN 0x000003e0 /* SQE time window */ 212 #define BIGMAC_XCFG_LANCE 0x00000010 /* Lance mode enable */ 213 #define BIGMAC_XCFG_LIPG0 0x000003e0 /* Lance mode IPG0 */ 214 215 /* BigMac transmit config register. */ 216 #define BIGMAC_TXCFG_ENABLE 0x00000001 /* Enable the transmitter */ 217 #define BIGMAC_TXCFG_SMODE 0x00000020 /* Enable slow transmit mode */ 218 #define BIGMAC_TXCFG_CIGN 0x00000040 /* Ignore transmit collisions */ 219 #define BIGMAC_TXCFG_FCSOFF 0x00000080 /* Do not emit FCS */ 220 #define BIGMAC_TXCFG_DBACKOFF 0x00000100 /* Disable backoff */ 221 #define BIGMAC_TXCFG_FULLDPLX 0x00000200 /* Enable full-duplex */ 222 #define BIGMAC_TXCFG_DGIVEUP 0x00000400 /* Don't give up on transmits */ 223 224 /* BigMac receive config register. */ 225 #define BIGMAC_RXCFG_ENABLE 0x00000001 /* Enable the receiver */ 226 #define BIGMAC_RXCFG_PSTRIP 0x00000020 /* Pad byte strip enable */ 227 #define BIGMAC_RXCFG_PMISC 0x00000040 /* Enable promiscuous mode */ 228 #define BIGMAC_RXCFG_DERR 0x00000080 /* Disable error checking */ 229 #define BIGMAC_RXCFG_DCRCS 0x00000100 /* Disable CRC stripping */ 230 #define BIGMAC_RXCFG_REJME 0x00000200 /* Reject packets addressed to me */ 231 #define BIGMAC_RXCFG_PGRP 0x00000400 /* Enable promisc group mode */ 232 #define BIGMAC_RXCFG_HENABLE 0x00000800 /* Enable the hash filter */ 233 #define BIGMAC_RXCFG_AENABLE 0x00001000 /* Enable the address filter */ 234 235 /* These are the "Management Interface" (ie. MIF) registers of the transceiver. */ 236 #define TCVR_BBCLOCK 0x00UL /* Bit bang clock register */ 237 #define TCVR_BBDATA 0x04UL /* Bit bang data register */ 238 #define TCVR_BBOENAB 0x08UL /* Bit bang output enable */ 239 #define TCVR_FRAME 0x0cUL /* Frame control/data register */ 240 #define TCVR_CFG 0x10UL /* MIF config register */ 241 #define TCVR_IMASK 0x14UL /* MIF interrupt mask */ 242 #define TCVR_STATUS 0x18UL /* MIF status */ 243 #define TCVR_SMACHINE 0x1cUL /* MIF state machine */ 244 #define TCVR_REG_SIZE 0x20UL 245 246 /* Frame commands. */ 247 #define FRAME_WRITE 0x50020000 248 #define FRAME_READ 0x60020000 249 250 /* Transceiver config register */ 251 #define TCV_CFG_PSELECT 0x00000001 /* Select PHY */ 252 #define TCV_CFG_PENABLE 0x00000002 /* Enable MIF polling */ 253 #define TCV_CFG_BENABLE 0x00000004 /* Enable the "bit banger" oh baby */ 254 #define TCV_CFG_PREGADDR 0x000000f8 /* Address of poll register */ 255 #define TCV_CFG_MDIO0 0x00000100 /* MDIO zero, data/attached */ 256 #define TCV_CFG_MDIO1 0x00000200 /* MDIO one, data/attached */ 257 #define TCV_CFG_PDADDR 0x00007c00 /* Device PHY address polling */ 258 259 /* Here are some PHY addresses. */ 260 #define TCV_PADDR_ETX 0 /* Internal transceiver */ 261 #define TCV_PADDR_ITX 1 /* External transceiver */ 262 263 /* Transceiver status register */ 264 #define TCV_STAT_BASIC 0xffff0000 /* The "basic" part */ 265 #define TCV_STAT_NORMAL 0x0000ffff /* The "non-basic" part */ 266 267 /* Inside the Happy Meal transceiver is the physical layer, they use an 268 * implementations for National Semiconductor, part number DP83840VCE. 269 * You can retrieve the data sheets and programming docs for this beast 270 * from http://www.national.com/ 271 * 272 * The DP83840 is capable of both 10 and 100Mbps ethernet, in both 273 * half and full duplex mode. It also supports auto negotiation. 274 * 275 * But.... THIS THING IS A PAIN IN THE ASS TO PROGRAM! 276 * Debugging eeprom burnt code is more fun than programming this chip! 277 */ 278 279 /* Generic MII registers defined in linux/mii.h, these below 280 * are DP83840 specific. 281 */ 282 #define DP83840_CSCONFIG 0x17 /* CS configuration */ 283 284 /* The Carrier Sense config register. */ 285 #define CSCONFIG_RESV1 0x0001 /* Unused... */ 286 #define CSCONFIG_LED4 0x0002 /* Pin for full-dplx LED4 */ 287 #define CSCONFIG_LED1 0x0004 /* Pin for conn-status LED1 */ 288 #define CSCONFIG_RESV2 0x0008 /* Unused... */ 289 #define CSCONFIG_TCVDISAB 0x0010 /* Turns off the transceiver */ 290 #define CSCONFIG_DFBYPASS 0x0020 /* Bypass disconnect function */ 291 #define CSCONFIG_GLFORCE 0x0040 /* Good link force for 100mbps */ 292 #define CSCONFIG_CLKTRISTATE 0x0080 /* Tristate 25m clock */ 293 #define CSCONFIG_RESV3 0x0700 /* Unused... */ 294 #define CSCONFIG_ENCODE 0x0800 /* 1=MLT-3, 0=binary */ 295 #define CSCONFIG_RENABLE 0x1000 /* Repeater mode enable */ 296 #define CSCONFIG_TCDISABLE 0x2000 /* Disable timeout counter */ 297 #define CSCONFIG_RESV4 0x4000 /* Unused... */ 298 #define CSCONFIG_NDISABLE 0x8000 /* Disable NRZI */ 299 300 /* Happy Meal descriptor rings and such. 301 * All descriptor rings must be aligned on a 2K boundary. 302 * All receive buffers must be 64 byte aligned. 303 * Always write the address first before setting the ownership 304 * bits to avoid races with the hardware scanning the ring. 305 */ 306 typedef u32 __bitwise hme32; 307 308 struct happy_meal_rxd { 309 hme32 rx_flags; 310 hme32 rx_addr; 311 }; 312 313 #define RXFLAG_OWN 0x80000000 /* 1 = hardware, 0 = software */ 314 #define RXFLAG_OVERFLOW 0x40000000 /* 1 = buffer overflow */ 315 #define RXFLAG_SIZE 0x3fff0000 /* Size of the buffer */ 316 #define RXFLAG_CSUM 0x0000ffff /* HW computed checksum */ 317 318 struct happy_meal_txd { 319 hme32 tx_flags; 320 hme32 tx_addr; 321 }; 322 323 #define TXFLAG_OWN 0x80000000 /* 1 = hardware, 0 = software */ 324 #define TXFLAG_SOP 0x40000000 /* 1 = start of packet */ 325 #define TXFLAG_EOP 0x20000000 /* 1 = end of packet */ 326 #define TXFLAG_CSENABLE 0x10000000 /* 1 = enable hw-checksums */ 327 #define TXFLAG_CSLOCATION 0x0ff00000 /* Where to stick the csum */ 328 #define TXFLAG_CSBUFBEGIN 0x000fc000 /* Where to begin checksum */ 329 #define TXFLAG_SIZE 0x00003fff /* Size of the packet */ 330 331 #define TX_RING_SIZE 32 /* Must be >16 and <255, multiple of 16 */ 332 #define RX_RING_SIZE 32 /* see ERX_CFG_SIZE* for possible values */ 333 334 #if (TX_RING_SIZE < 16 || TX_RING_SIZE > 256 || (TX_RING_SIZE % 16) != 0) 335 #error TX_RING_SIZE holds illegal value 336 #endif 337 338 #define TX_RING_MAXSIZE 256 339 #define RX_RING_MAXSIZE 256 340 341 /* We use a 14 byte offset for checksum computation. */ 342 #if (RX_RING_SIZE == 32) 343 #define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE32|((14/2)<<16)) 344 #else 345 #if (RX_RING_SIZE == 64) 346 #define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE64|((14/2)<<16)) 347 #else 348 #if (RX_RING_SIZE == 128) 349 #define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE128|((14/2)<<16)) 350 #else 351 #if (RX_RING_SIZE == 256) 352 #define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE256|((14/2)<<16)) 353 #else 354 #error RX_RING_SIZE holds illegal value 355 #endif 356 #endif 357 #endif 358 #endif 359 360 #define NEXT_RX(num) (((num) + 1) & (RX_RING_SIZE - 1)) 361 #define NEXT_TX(num) (((num) + 1) & (TX_RING_SIZE - 1)) 362 #define PREV_RX(num) (((num) - 1) & (RX_RING_SIZE - 1)) 363 #define PREV_TX(num) (((num) - 1) & (TX_RING_SIZE - 1)) 364 365 #define TX_BUFFS_AVAIL(hp) \ 366 (((hp)->tx_old <= (hp)->tx_new) ? \ 367 (hp)->tx_old + (TX_RING_SIZE - 1) - (hp)->tx_new : \ 368 (hp)->tx_old - (hp)->tx_new - 1) 369 370 #define RX_OFFSET 2 371 #define RX_BUF_ALLOC_SIZE (1546 + RX_OFFSET + 64) 372 373 #define RX_COPY_THRESHOLD 256 374 375 struct hmeal_init_block { 376 struct happy_meal_rxd happy_meal_rxd[RX_RING_MAXSIZE]; 377 struct happy_meal_txd happy_meal_txd[TX_RING_MAXSIZE]; 378 }; 379 380 #define hblock_offset(mem, elem) \ 381 ((__u32)((unsigned long)(&(((struct hmeal_init_block *)0)->mem[elem])))) 382 383 /* Now software state stuff. */ 384 enum happy_transceiver { 385 external = 0, 386 internal = 1, 387 none = 2, 388 }; 389 390 /* Timer state engine. */ 391 enum happy_timer_state { 392 arbwait = 0, /* Waiting for auto negotiation to complete. */ 393 lupwait = 1, /* Auto-neg complete, awaiting link-up status. */ 394 ltrywait = 2, /* Forcing try of all modes, from fastest to slowest. */ 395 asleep = 3, /* Time inactive. */ 396 }; 397 398 struct quattro; 399 400 /* Happy happy, joy joy! */ 401 struct happy_meal { 402 void __iomem *gregs; /* Happy meal global registers */ 403 struct hmeal_init_block *happy_block; /* RX and TX descriptors (CPU addr) */ 404 405 #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) 406 u32 (*read_desc32)(hme32 *); 407 void (*write_txd)(struct happy_meal_txd *, u32, u32); 408 void (*write_rxd)(struct happy_meal_rxd *, u32, u32); 409 #endif 410 411 /* This is either an platform_device or a pci_dev. */ 412 void *happy_dev; 413 struct device *dma_dev; 414 415 spinlock_t happy_lock; 416 417 struct sk_buff *rx_skbs[RX_RING_SIZE]; 418 struct sk_buff *tx_skbs[TX_RING_SIZE]; 419 420 int rx_new, tx_new, rx_old, tx_old; 421 422 #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) 423 u32 (*read32)(void __iomem *); 424 void (*write32)(void __iomem *, u32); 425 #endif 426 427 void __iomem *etxregs; /* External transmitter regs */ 428 void __iomem *erxregs; /* External receiver regs */ 429 void __iomem *bigmacregs; /* BIGMAC core regs */ 430 void __iomem *tcvregs; /* MIF transceiver regs */ 431 432 dma_addr_t hblock_dvma; /* DVMA visible address happy block */ 433 unsigned int happy_flags; /* Driver state flags */ 434 int irq; 435 enum happy_transceiver tcvr_type; /* Kind of transceiver in use */ 436 unsigned int happy_bursts; /* Get your mind out of the gutter */ 437 unsigned int paddr; /* PHY address for transceiver */ 438 unsigned short hm_revision; /* Happy meal revision */ 439 unsigned short sw_bmcr; /* SW copy of BMCR */ 440 unsigned short sw_bmsr; /* SW copy of BMSR */ 441 unsigned short sw_physid1; /* SW copy of PHYSID1 */ 442 unsigned short sw_physid2; /* SW copy of PHYSID2 */ 443 unsigned short sw_advertise; /* SW copy of ADVERTISE */ 444 unsigned short sw_lpa; /* SW copy of LPA */ 445 unsigned short sw_expansion; /* SW copy of EXPANSION */ 446 unsigned short sw_csconfig; /* SW copy of CSCONFIG */ 447 unsigned int auto_speed; /* Auto-nego link speed */ 448 unsigned int forced_speed; /* Force mode link speed */ 449 unsigned int poll_data; /* MIF poll data */ 450 unsigned int poll_flag; /* MIF poll flag */ 451 unsigned int linkcheck; /* Have we checked the link yet? */ 452 unsigned int lnkup; /* Is the link up as far as we know? */ 453 unsigned int lnkdown; /* Trying to force the link down? */ 454 unsigned int lnkcnt; /* Counter for link-up attempts. */ 455 struct timer_list happy_timer; /* To watch the link when coming up. */ 456 enum happy_timer_state timer_state; /* State of the auto-neg timer. */ 457 unsigned int timer_ticks; /* Number of clicks at each state. */ 458 459 struct net_device *dev; /* Backpointer */ 460 struct quattro *qfe_parent; /* For Quattro cards */ 461 int qfe_ent; /* Which instance on quattro */ 462 }; 463 464 /* Here are the happy flags. */ 465 #define HFLAG_POLL 0x00000001 /* We are doing MIF polling */ 466 #define HFLAG_FENABLE 0x00000002 /* The MII frame is enabled */ 467 #define HFLAG_LANCE 0x00000004 /* We are using lance-mode */ 468 #define HFLAG_RXENABLE 0x00000008 /* Receiver is enabled */ 469 #define HFLAG_AUTO 0x00000010 /* Using auto-negotiation, 0 = force */ 470 #define HFLAG_FULL 0x00000020 /* Full duplex enable */ 471 #define HFLAG_MACFULL 0x00000040 /* Using full duplex in the MAC */ 472 #define HFLAG_POLLENABLE 0x00000080 /* Actually try MIF polling */ 473 #define HFLAG_RXCV 0x00000100 /* XXX RXCV ENABLE */ 474 #define HFLAG_INIT 0x00000200 /* Init called at least once */ 475 #define HFLAG_LINKUP 0x00000400 /* 1 = Link is up */ 476 #define HFLAG_PCI 0x00000800 /* PCI based Happy Meal */ 477 #define HFLAG_QUATTRO 0x00001000 /* On QFE/Quattro card */ 478 479 #define HFLAG_20_21 (HFLAG_POLLENABLE | HFLAG_FENABLE) 480 #define HFLAG_NOT_A0 (HFLAG_POLLENABLE | HFLAG_FENABLE | HFLAG_LANCE | HFLAG_RXCV) 481 482 /* Support for QFE/Quattro cards. */ 483 struct quattro { 484 struct net_device *happy_meals[4]; 485 486 /* This is either a sbus_dev or a pci_dev. */ 487 void *quattro_dev; 488 489 struct quattro *next; 490 491 /* PROM ranges, if any. */ 492 #ifdef CONFIG_SBUS 493 struct linux_prom_ranges ranges[8]; 494 #endif 495 int nranges; 496 }; 497 498 /* We use this to acquire receive skb's that we can DMA directly into. */ 499 #define ALIGNED_RX_SKB_ADDR(addr) \ 500 ((((unsigned long)(addr) + (64UL - 1UL)) & ~(64UL - 1UL)) - (unsigned long)(addr)) 501 #define happy_meal_alloc_skb(__length, __gfp_flags) \ 502 ({ struct sk_buff *__skb; \ 503 __skb = alloc_skb((__length) + 64, (__gfp_flags)); \ 504 if(__skb) { \ 505 int __offset = (int) ALIGNED_RX_SKB_ADDR(__skb->data); \ 506 if(__offset) \ 507 skb_reserve(__skb, __offset); \ 508 } \ 509 __skb; \ 510 }) 511 512 #endif /* !(_SUNHME_H) */ 513