1 /** 2 * QEMU RTL8139 emulation 3 * 4 * Copyright (c) 2006 Igor Kovalenko 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 24 * Modifications: 25 * 2006-Jan-28 Mark Malakanov : TSAD and CSCR implementation (for Windows driver) 26 * 27 * 2006-Apr-28 Juergen Lock : EEPROM emulation changes for FreeBSD driver 28 * HW revision ID changes for FreeBSD driver 29 * 30 * 2006-Jul-01 Igor Kovalenko : Implemented loopback mode for FreeBSD driver 31 * Corrected packet transfer reassembly routine for 8139C+ mode 32 * Rearranged debugging print statements 33 * Implemented PCI timer interrupt (disabled by default) 34 * Implemented Tally Counters, increased VM load/save version 35 * Implemented IP/TCP/UDP checksum task offloading 36 * 37 * 2006-Jul-04 Igor Kovalenko : Implemented TCP segmentation offloading 38 * Fixed MTU=1500 for produced ethernet frames 39 * 40 * 2006-Jul-09 Igor Kovalenko : Fixed TCP header length calculation while processing 41 * segmentation offloading 42 * Removed slirp.h dependency 43 * Added rx/tx buffer reset when enabling rx/tx operation 44 * 45 * 2010-Feb-04 Frediano Ziglio: Rewrote timer support using QEMU timer only 46 * when strictly needed (required for for 47 * Darwin) 48 * 2011-Mar-22 Benjamin Poirier: Implemented VLAN offloading 49 */ 50 51 /* For crc32 */ 52 #include <zlib.h> 53 54 #include "hw/hw.h" 55 #include "hw/pci/pci.h" 56 #include "sysemu/dma.h" 57 #include "qemu/timer.h" 58 #include "net/net.h" 59 #include "hw/loader.h" 60 #include "sysemu/sysemu.h" 61 #include "qemu/iov.h" 62 63 /* debug RTL8139 card */ 64 //#define DEBUG_RTL8139 1 65 66 #define PCI_FREQUENCY 33000000L 67 68 #define SET_MASKED(input, mask, curr) \ 69 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) ) 70 71 /* arg % size for size which is a power of 2 */ 72 #define MOD2(input, size) \ 73 ( ( input ) & ( size - 1 ) ) 74 75 #define ETHER_ADDR_LEN 6 76 #define ETHER_TYPE_LEN 2 77 #define ETH_HLEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) 78 #define ETH_P_IP 0x0800 /* Internet Protocol packet */ 79 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ 80 #define ETH_MTU 1500 81 82 #define VLAN_TCI_LEN 2 83 #define VLAN_HLEN (ETHER_TYPE_LEN + VLAN_TCI_LEN) 84 85 #if defined (DEBUG_RTL8139) 86 # define DPRINTF(fmt, ...) \ 87 do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0) 88 #else 89 static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...) 90 { 91 return 0; 92 } 93 #endif 94 95 #define TYPE_RTL8139 "rtl8139" 96 97 #define RTL8139(obj) \ 98 OBJECT_CHECK(RTL8139State, (obj), TYPE_RTL8139) 99 100 /* Symbolic offsets to registers. */ 101 enum RTL8139_registers { 102 MAC0 = 0, /* Ethernet hardware address. */ 103 MAR0 = 8, /* Multicast filter. */ 104 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */ 105 /* Dump Tally Conter control register(64bit). C+ mode only */ 106 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */ 107 RxBuf = 0x30, 108 ChipCmd = 0x37, 109 RxBufPtr = 0x38, 110 RxBufAddr = 0x3A, 111 IntrMask = 0x3C, 112 IntrStatus = 0x3E, 113 TxConfig = 0x40, 114 RxConfig = 0x44, 115 Timer = 0x48, /* A general-purpose counter. */ 116 RxMissed = 0x4C, /* 24 bits valid, write clears. */ 117 Cfg9346 = 0x50, 118 Config0 = 0x51, 119 Config1 = 0x52, 120 FlashReg = 0x54, 121 MediaStatus = 0x58, 122 Config3 = 0x59, 123 Config4 = 0x5A, /* absent on RTL-8139A */ 124 HltClk = 0x5B, 125 MultiIntr = 0x5C, 126 PCIRevisionID = 0x5E, 127 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/ 128 BasicModeCtrl = 0x62, 129 BasicModeStatus = 0x64, 130 NWayAdvert = 0x66, 131 NWayLPAR = 0x68, 132 NWayExpansion = 0x6A, 133 /* Undocumented registers, but required for proper operation. */ 134 FIFOTMS = 0x70, /* FIFO Control and test. */ 135 CSCR = 0x74, /* Chip Status and Configuration Register. */ 136 PARA78 = 0x78, 137 PARA7c = 0x7c, /* Magic transceiver parameter register. */ 138 Config5 = 0xD8, /* absent on RTL-8139A */ 139 /* C+ mode */ 140 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */ 141 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */ 142 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */ 143 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */ 144 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */ 145 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */ 146 TxThresh = 0xEC, /* Early Tx threshold */ 147 }; 148 149 enum ClearBitMasks { 150 MultiIntrClear = 0xF000, 151 ChipCmdClear = 0xE2, 152 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1), 153 }; 154 155 enum ChipCmdBits { 156 CmdReset = 0x10, 157 CmdRxEnb = 0x08, 158 CmdTxEnb = 0x04, 159 RxBufEmpty = 0x01, 160 }; 161 162 /* C+ mode */ 163 enum CplusCmdBits { 164 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */ 165 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */ 166 CPlusRxEnb = 0x0002, 167 CPlusTxEnb = 0x0001, 168 }; 169 170 /* Interrupt register bits, using my own meaningful names. */ 171 enum IntrStatusBits { 172 PCIErr = 0x8000, 173 PCSTimeout = 0x4000, 174 RxFIFOOver = 0x40, 175 RxUnderrun = 0x20, /* Packet Underrun / Link Change */ 176 RxOverflow = 0x10, 177 TxErr = 0x08, 178 TxOK = 0x04, 179 RxErr = 0x02, 180 RxOK = 0x01, 181 182 RxAckBits = RxFIFOOver | RxOverflow | RxOK, 183 }; 184 185 enum TxStatusBits { 186 TxHostOwns = 0x2000, 187 TxUnderrun = 0x4000, 188 TxStatOK = 0x8000, 189 TxOutOfWindow = 0x20000000, 190 TxAborted = 0x40000000, 191 TxCarrierLost = 0x80000000, 192 }; 193 enum RxStatusBits { 194 RxMulticast = 0x8000, 195 RxPhysical = 0x4000, 196 RxBroadcast = 0x2000, 197 RxBadSymbol = 0x0020, 198 RxRunt = 0x0010, 199 RxTooLong = 0x0008, 200 RxCRCErr = 0x0004, 201 RxBadAlign = 0x0002, 202 RxStatusOK = 0x0001, 203 }; 204 205 /* Bits in RxConfig. */ 206 enum rx_mode_bits { 207 AcceptErr = 0x20, 208 AcceptRunt = 0x10, 209 AcceptBroadcast = 0x08, 210 AcceptMulticast = 0x04, 211 AcceptMyPhys = 0x02, 212 AcceptAllPhys = 0x01, 213 }; 214 215 /* Bits in TxConfig. */ 216 enum tx_config_bits { 217 218 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */ 219 TxIFGShift = 24, 220 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */ 221 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */ 222 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */ 223 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */ 224 225 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */ 226 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */ 227 TxClearAbt = (1 << 0), /* Clear abort (WO) */ 228 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */ 229 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */ 230 231 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */ 232 }; 233 234 235 /* Transmit Status of All Descriptors (TSAD) Register */ 236 enum TSAD_bits { 237 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3 238 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2 239 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1 240 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0 241 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3 242 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2 243 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1 244 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0 245 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3 246 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2 247 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1 248 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0 249 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3 250 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2 251 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1 252 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0 253 }; 254 255 256 /* Bits in Config1 */ 257 enum Config1Bits { 258 Cfg1_PM_Enable = 0x01, 259 Cfg1_VPD_Enable = 0x02, 260 Cfg1_PIO = 0x04, 261 Cfg1_MMIO = 0x08, 262 LWAKE = 0x10, /* not on 8139, 8139A */ 263 Cfg1_Driver_Load = 0x20, 264 Cfg1_LED0 = 0x40, 265 Cfg1_LED1 = 0x80, 266 SLEEP = (1 << 1), /* only on 8139, 8139A */ 267 PWRDN = (1 << 0), /* only on 8139, 8139A */ 268 }; 269 270 /* Bits in Config3 */ 271 enum Config3Bits { 272 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */ 273 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */ 274 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */ 275 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */ 276 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */ 277 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */ 278 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */ 279 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */ 280 }; 281 282 /* Bits in Config4 */ 283 enum Config4Bits { 284 LWPTN = (1 << 2), /* not on 8139, 8139A */ 285 }; 286 287 /* Bits in Config5 */ 288 enum Config5Bits { 289 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */ 290 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */ 291 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */ 292 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */ 293 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */ 294 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */ 295 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */ 296 }; 297 298 enum RxConfigBits { 299 /* rx fifo threshold */ 300 RxCfgFIFOShift = 13, 301 RxCfgFIFONone = (7 << RxCfgFIFOShift), 302 303 /* Max DMA burst */ 304 RxCfgDMAShift = 8, 305 RxCfgDMAUnlimited = (7 << RxCfgDMAShift), 306 307 /* rx ring buffer length */ 308 RxCfgRcv8K = 0, 309 RxCfgRcv16K = (1 << 11), 310 RxCfgRcv32K = (1 << 12), 311 RxCfgRcv64K = (1 << 11) | (1 << 12), 312 313 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */ 314 RxNoWrap = (1 << 7), 315 }; 316 317 /* Twister tuning parameters from RealTek. 318 Completely undocumented, but required to tune bad links on some boards. */ 319 /* 320 enum CSCRBits { 321 CSCR_LinkOKBit = 0x0400, 322 CSCR_LinkChangeBit = 0x0800, 323 CSCR_LinkStatusBits = 0x0f000, 324 CSCR_LinkDownOffCmd = 0x003c0, 325 CSCR_LinkDownCmd = 0x0f3c0, 326 */ 327 enum CSCRBits { 328 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */ 329 CSCR_LD = 1<<9, /* Active low TPI link disable signal. When low, TPI still transmits link pulses and TPI stays in good link state. def 1*/ 330 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/ 331 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/ 332 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/ 333 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/ 334 CSCR_Con_status = 1<<3, /* This bit indicates the status of the connection. 1 = valid connected link detected; 0 = disconnected link detected. RO def 0*/ 335 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/ 336 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/ 337 }; 338 339 enum Cfg9346Bits { 340 Cfg9346_Normal = 0x00, 341 Cfg9346_Autoload = 0x40, 342 Cfg9346_Programming = 0x80, 343 Cfg9346_ConfigWrite = 0xC0, 344 }; 345 346 typedef enum { 347 CH_8139 = 0, 348 CH_8139_K, 349 CH_8139A, 350 CH_8139A_G, 351 CH_8139B, 352 CH_8130, 353 CH_8139C, 354 CH_8100, 355 CH_8100B_8139D, 356 CH_8101, 357 } chip_t; 358 359 enum chip_flags { 360 HasHltClk = (1 << 0), 361 HasLWake = (1 << 1), 362 }; 363 364 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \ 365 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22) 366 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1) 367 368 #define RTL8139_PCI_REVID_8139 0x10 369 #define RTL8139_PCI_REVID_8139CPLUS 0x20 370 371 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS 372 373 /* Size is 64 * 16bit words */ 374 #define EEPROM_9346_ADDR_BITS 6 375 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS) 376 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1) 377 378 enum Chip9346Operation 379 { 380 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */ 381 Chip9346_op_read = 0x80, /* 10 AAAAAA */ 382 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */ 383 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */ 384 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */ 385 Chip9346_op_write_all = 0x10, /* 00 01zzzz */ 386 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */ 387 }; 388 389 enum Chip9346Mode 390 { 391 Chip9346_none = 0, 392 Chip9346_enter_command_mode, 393 Chip9346_read_command, 394 Chip9346_data_read, /* from output register */ 395 Chip9346_data_write, /* to input register, then to contents at specified address */ 396 Chip9346_data_write_all, /* to input register, then filling contents */ 397 }; 398 399 typedef struct EEprom9346 400 { 401 uint16_t contents[EEPROM_9346_SIZE]; 402 int mode; 403 uint32_t tick; 404 uint8_t address; 405 uint16_t input; 406 uint16_t output; 407 408 uint8_t eecs; 409 uint8_t eesk; 410 uint8_t eedi; 411 uint8_t eedo; 412 } EEprom9346; 413 414 typedef struct RTL8139TallyCounters 415 { 416 /* Tally counters */ 417 uint64_t TxOk; 418 uint64_t RxOk; 419 uint64_t TxERR; 420 uint32_t RxERR; 421 uint16_t MissPkt; 422 uint16_t FAE; 423 uint32_t Tx1Col; 424 uint32_t TxMCol; 425 uint64_t RxOkPhy; 426 uint64_t RxOkBrd; 427 uint32_t RxOkMul; 428 uint16_t TxAbt; 429 uint16_t TxUndrn; 430 } RTL8139TallyCounters; 431 432 /* Clears all tally counters */ 433 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters); 434 435 typedef struct RTL8139State { 436 /*< private >*/ 437 PCIDevice parent_obj; 438 /*< public >*/ 439 440 uint8_t phys[8]; /* mac address */ 441 uint8_t mult[8]; /* multicast mask array */ 442 443 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */ 444 uint32_t TxAddr[4]; /* TxAddr0 */ 445 uint32_t RxBuf; /* Receive buffer */ 446 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */ 447 uint32_t RxBufPtr; 448 uint32_t RxBufAddr; 449 450 uint16_t IntrStatus; 451 uint16_t IntrMask; 452 453 uint32_t TxConfig; 454 uint32_t RxConfig; 455 uint32_t RxMissed; 456 457 uint16_t CSCR; 458 459 uint8_t Cfg9346; 460 uint8_t Config0; 461 uint8_t Config1; 462 uint8_t Config3; 463 uint8_t Config4; 464 uint8_t Config5; 465 466 uint8_t clock_enabled; 467 uint8_t bChipCmdState; 468 469 uint16_t MultiIntr; 470 471 uint16_t BasicModeCtrl; 472 uint16_t BasicModeStatus; 473 uint16_t NWayAdvert; 474 uint16_t NWayLPAR; 475 uint16_t NWayExpansion; 476 477 uint16_t CpCmd; 478 uint8_t TxThresh; 479 480 NICState *nic; 481 NICConf conf; 482 483 /* C ring mode */ 484 uint32_t currTxDesc; 485 486 /* C+ mode */ 487 uint32_t cplus_enabled; 488 489 uint32_t currCPlusRxDesc; 490 uint32_t currCPlusTxDesc; 491 492 uint32_t RxRingAddrLO; 493 uint32_t RxRingAddrHI; 494 495 EEprom9346 eeprom; 496 497 uint32_t TCTR; 498 uint32_t TimerInt; 499 int64_t TCTR_base; 500 501 /* Tally counters */ 502 RTL8139TallyCounters tally_counters; 503 504 /* Non-persistent data */ 505 uint8_t *cplus_txbuffer; 506 int cplus_txbuffer_len; 507 int cplus_txbuffer_offset; 508 509 /* PCI interrupt timer */ 510 QEMUTimer *timer; 511 int64_t TimerExpire; 512 513 MemoryRegion bar_io; 514 MemoryRegion bar_mem; 515 516 /* Support migration to/from old versions */ 517 int rtl8139_mmio_io_addr_dummy; 518 } RTL8139State; 519 520 /* Writes tally counters to memory via DMA */ 521 static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr); 522 523 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time); 524 525 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command) 526 { 527 DPRINTF("eeprom command 0x%02x\n", command); 528 529 switch (command & Chip9346_op_mask) 530 { 531 case Chip9346_op_read: 532 { 533 eeprom->address = command & EEPROM_9346_ADDR_MASK; 534 eeprom->output = eeprom->contents[eeprom->address]; 535 eeprom->eedo = 0; 536 eeprom->tick = 0; 537 eeprom->mode = Chip9346_data_read; 538 DPRINTF("eeprom read from address 0x%02x data=0x%04x\n", 539 eeprom->address, eeprom->output); 540 } 541 break; 542 543 case Chip9346_op_write: 544 { 545 eeprom->address = command & EEPROM_9346_ADDR_MASK; 546 eeprom->input = 0; 547 eeprom->tick = 0; 548 eeprom->mode = Chip9346_none; /* Chip9346_data_write */ 549 DPRINTF("eeprom begin write to address 0x%02x\n", 550 eeprom->address); 551 } 552 break; 553 default: 554 eeprom->mode = Chip9346_none; 555 switch (command & Chip9346_op_ext_mask) 556 { 557 case Chip9346_op_write_enable: 558 DPRINTF("eeprom write enabled\n"); 559 break; 560 case Chip9346_op_write_all: 561 DPRINTF("eeprom begin write all\n"); 562 break; 563 case Chip9346_op_write_disable: 564 DPRINTF("eeprom write disabled\n"); 565 break; 566 } 567 break; 568 } 569 } 570 571 static void prom9346_shift_clock(EEprom9346 *eeprom) 572 { 573 int bit = eeprom->eedi?1:0; 574 575 ++ eeprom->tick; 576 577 DPRINTF("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, 578 eeprom->eedo); 579 580 switch (eeprom->mode) 581 { 582 case Chip9346_enter_command_mode: 583 if (bit) 584 { 585 eeprom->mode = Chip9346_read_command; 586 eeprom->tick = 0; 587 eeprom->input = 0; 588 DPRINTF("eeprom: +++ synchronized, begin command read\n"); 589 } 590 break; 591 592 case Chip9346_read_command: 593 eeprom->input = (eeprom->input << 1) | (bit & 1); 594 if (eeprom->tick == 8) 595 { 596 prom9346_decode_command(eeprom, eeprom->input & 0xff); 597 } 598 break; 599 600 case Chip9346_data_read: 601 eeprom->eedo = (eeprom->output & 0x8000)?1:0; 602 eeprom->output <<= 1; 603 if (eeprom->tick == 16) 604 { 605 #if 1 606 // the FreeBSD drivers (rl and re) don't explicitly toggle 607 // CS between reads (or does setting Cfg9346 to 0 count too?), 608 // so we need to enter wait-for-command state here 609 eeprom->mode = Chip9346_enter_command_mode; 610 eeprom->input = 0; 611 eeprom->tick = 0; 612 613 DPRINTF("eeprom: +++ end of read, awaiting next command\n"); 614 #else 615 // original behaviour 616 ++eeprom->address; 617 eeprom->address &= EEPROM_9346_ADDR_MASK; 618 eeprom->output = eeprom->contents[eeprom->address]; 619 eeprom->tick = 0; 620 621 DPRINTF("eeprom: +++ read next address 0x%02x data=0x%04x\n", 622 eeprom->address, eeprom->output); 623 #endif 624 } 625 break; 626 627 case Chip9346_data_write: 628 eeprom->input = (eeprom->input << 1) | (bit & 1); 629 if (eeprom->tick == 16) 630 { 631 DPRINTF("eeprom write to address 0x%02x data=0x%04x\n", 632 eeprom->address, eeprom->input); 633 634 eeprom->contents[eeprom->address] = eeprom->input; 635 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */ 636 eeprom->tick = 0; 637 eeprom->input = 0; 638 } 639 break; 640 641 case Chip9346_data_write_all: 642 eeprom->input = (eeprom->input << 1) | (bit & 1); 643 if (eeprom->tick == 16) 644 { 645 int i; 646 for (i = 0; i < EEPROM_9346_SIZE; i++) 647 { 648 eeprom->contents[i] = eeprom->input; 649 } 650 DPRINTF("eeprom filled with data=0x%04x\n", eeprom->input); 651 652 eeprom->mode = Chip9346_enter_command_mode; 653 eeprom->tick = 0; 654 eeprom->input = 0; 655 } 656 break; 657 658 default: 659 break; 660 } 661 } 662 663 static int prom9346_get_wire(RTL8139State *s) 664 { 665 EEprom9346 *eeprom = &s->eeprom; 666 if (!eeprom->eecs) 667 return 0; 668 669 return eeprom->eedo; 670 } 671 672 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */ 673 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi) 674 { 675 EEprom9346 *eeprom = &s->eeprom; 676 uint8_t old_eecs = eeprom->eecs; 677 uint8_t old_eesk = eeprom->eesk; 678 679 eeprom->eecs = eecs; 680 eeprom->eesk = eesk; 681 eeprom->eedi = eedi; 682 683 DPRINTF("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs, 684 eeprom->eesk, eeprom->eedi, eeprom->eedo); 685 686 if (!old_eecs && eecs) 687 { 688 /* Synchronize start */ 689 eeprom->tick = 0; 690 eeprom->input = 0; 691 eeprom->output = 0; 692 eeprom->mode = Chip9346_enter_command_mode; 693 694 DPRINTF("=== eeprom: begin access, enter command mode\n"); 695 } 696 697 if (!eecs) 698 { 699 DPRINTF("=== eeprom: end access\n"); 700 return; 701 } 702 703 if (!old_eesk && eesk) 704 { 705 /* SK front rules */ 706 prom9346_shift_clock(eeprom); 707 } 708 } 709 710 static void rtl8139_update_irq(RTL8139State *s) 711 { 712 PCIDevice *d = PCI_DEVICE(s); 713 int isr; 714 isr = (s->IntrStatus & s->IntrMask) & 0xffff; 715 716 DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus, 717 s->IntrMask); 718 719 pci_set_irq(d, (isr != 0)); 720 } 721 722 static int rtl8139_RxWrap(RTL8139State *s) 723 { 724 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */ 725 return (s->RxConfig & (1 << 7)); 726 } 727 728 static int rtl8139_receiver_enabled(RTL8139State *s) 729 { 730 return s->bChipCmdState & CmdRxEnb; 731 } 732 733 static int rtl8139_transmitter_enabled(RTL8139State *s) 734 { 735 return s->bChipCmdState & CmdTxEnb; 736 } 737 738 static int rtl8139_cp_receiver_enabled(RTL8139State *s) 739 { 740 return s->CpCmd & CPlusRxEnb; 741 } 742 743 static int rtl8139_cp_transmitter_enabled(RTL8139State *s) 744 { 745 return s->CpCmd & CPlusTxEnb; 746 } 747 748 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size) 749 { 750 PCIDevice *d = PCI_DEVICE(s); 751 752 if (s->RxBufAddr + size > s->RxBufferSize) 753 { 754 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize); 755 756 /* write packet data */ 757 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s))) 758 { 759 DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped); 760 761 if (size > wrapped) 762 { 763 pci_dma_write(d, s->RxBuf + s->RxBufAddr, 764 buf, size-wrapped); 765 } 766 767 /* reset buffer pointer */ 768 s->RxBufAddr = 0; 769 770 pci_dma_write(d, s->RxBuf + s->RxBufAddr, 771 buf + (size-wrapped), wrapped); 772 773 s->RxBufAddr = wrapped; 774 775 return; 776 } 777 } 778 779 /* non-wrapping path or overwrapping enabled */ 780 pci_dma_write(d, s->RxBuf + s->RxBufAddr, buf, size); 781 782 s->RxBufAddr += size; 783 } 784 785 #define MIN_BUF_SIZE 60 786 static inline dma_addr_t rtl8139_addr64(uint32_t low, uint32_t high) 787 { 788 return low | ((uint64_t)high << 32); 789 } 790 791 /* Workaround for buggy guest driver such as linux who allocates rx 792 * rings after the receiver were enabled. */ 793 static bool rtl8139_cp_rx_valid(RTL8139State *s) 794 { 795 return !(s->RxRingAddrLO == 0 && s->RxRingAddrHI == 0); 796 } 797 798 static int rtl8139_can_receive(NetClientState *nc) 799 { 800 RTL8139State *s = qemu_get_nic_opaque(nc); 801 int avail; 802 803 /* Receive (drop) packets if card is disabled. */ 804 if (!s->clock_enabled) 805 return 1; 806 if (!rtl8139_receiver_enabled(s)) 807 return 1; 808 809 if (rtl8139_cp_receiver_enabled(s) && rtl8139_cp_rx_valid(s)) { 810 /* ??? Flow control not implemented in c+ mode. 811 This is a hack to work around slirp deficiencies anyway. */ 812 return 1; 813 } else { 814 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, 815 s->RxBufferSize); 816 return (avail == 0 || avail >= 1514 || (s->IntrMask & RxOverflow)); 817 } 818 } 819 820 static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt) 821 { 822 RTL8139State *s = qemu_get_nic_opaque(nc); 823 PCIDevice *d = PCI_DEVICE(s); 824 /* size is the length of the buffer passed to the driver */ 825 int size = size_; 826 const uint8_t *dot1q_buf = NULL; 827 828 uint32_t packet_header = 0; 829 830 uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN]; 831 static const uint8_t broadcast_macaddr[6] = 832 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 833 834 DPRINTF(">>> received len=%d\n", size); 835 836 /* test if board clock is stopped */ 837 if (!s->clock_enabled) 838 { 839 DPRINTF("stopped ==========================\n"); 840 return -1; 841 } 842 843 /* first check if receiver is enabled */ 844 845 if (!rtl8139_receiver_enabled(s)) 846 { 847 DPRINTF("receiver disabled ================\n"); 848 return -1; 849 } 850 851 /* XXX: check this */ 852 if (s->RxConfig & AcceptAllPhys) { 853 /* promiscuous: receive all */ 854 DPRINTF(">>> packet received in promiscuous mode\n"); 855 856 } else { 857 if (!memcmp(buf, broadcast_macaddr, 6)) { 858 /* broadcast address */ 859 if (!(s->RxConfig & AcceptBroadcast)) 860 { 861 DPRINTF(">>> broadcast packet rejected\n"); 862 863 /* update tally counter */ 864 ++s->tally_counters.RxERR; 865 866 return size; 867 } 868 869 packet_header |= RxBroadcast; 870 871 DPRINTF(">>> broadcast packet received\n"); 872 873 /* update tally counter */ 874 ++s->tally_counters.RxOkBrd; 875 876 } else if (buf[0] & 0x01) { 877 /* multicast */ 878 if (!(s->RxConfig & AcceptMulticast)) 879 { 880 DPRINTF(">>> multicast packet rejected\n"); 881 882 /* update tally counter */ 883 ++s->tally_counters.RxERR; 884 885 return size; 886 } 887 888 int mcast_idx = compute_mcast_idx(buf); 889 890 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) 891 { 892 DPRINTF(">>> multicast address mismatch\n"); 893 894 /* update tally counter */ 895 ++s->tally_counters.RxERR; 896 897 return size; 898 } 899 900 packet_header |= RxMulticast; 901 902 DPRINTF(">>> multicast packet received\n"); 903 904 /* update tally counter */ 905 ++s->tally_counters.RxOkMul; 906 907 } else if (s->phys[0] == buf[0] && 908 s->phys[1] == buf[1] && 909 s->phys[2] == buf[2] && 910 s->phys[3] == buf[3] && 911 s->phys[4] == buf[4] && 912 s->phys[5] == buf[5]) { 913 /* match */ 914 if (!(s->RxConfig & AcceptMyPhys)) 915 { 916 DPRINTF(">>> rejecting physical address matching packet\n"); 917 918 /* update tally counter */ 919 ++s->tally_counters.RxERR; 920 921 return size; 922 } 923 924 packet_header |= RxPhysical; 925 926 DPRINTF(">>> physical address matching packet received\n"); 927 928 /* update tally counter */ 929 ++s->tally_counters.RxOkPhy; 930 931 } else { 932 933 DPRINTF(">>> unknown packet\n"); 934 935 /* update tally counter */ 936 ++s->tally_counters.RxERR; 937 938 return size; 939 } 940 } 941 942 /* if too small buffer, then expand it 943 * Include some tailroom in case a vlan tag is later removed. */ 944 if (size < MIN_BUF_SIZE + VLAN_HLEN) { 945 memcpy(buf1, buf, size); 946 memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size); 947 buf = buf1; 948 if (size < MIN_BUF_SIZE) { 949 size = MIN_BUF_SIZE; 950 } 951 } 952 953 if (rtl8139_cp_receiver_enabled(s)) 954 { 955 if (!rtl8139_cp_rx_valid(s)) { 956 return size; 957 } 958 959 DPRINTF("in C+ Rx mode ================\n"); 960 961 /* begin C+ receiver mode */ 962 963 /* w0 ownership flag */ 964 #define CP_RX_OWN (1<<31) 965 /* w0 end of ring flag */ 966 #define CP_RX_EOR (1<<30) 967 /* w0 bits 0...12 : buffer size */ 968 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1) 969 /* w1 tag available flag */ 970 #define CP_RX_TAVA (1<<16) 971 /* w1 bits 0...15 : VLAN tag */ 972 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1) 973 /* w2 low 32bit of Rx buffer ptr */ 974 /* w3 high 32bit of Rx buffer ptr */ 975 976 int descriptor = s->currCPlusRxDesc; 977 dma_addr_t cplus_rx_ring_desc; 978 979 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI); 980 cplus_rx_ring_desc += 16 * descriptor; 981 982 DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at " 983 "%08x %08x = "DMA_ADDR_FMT"\n", descriptor, s->RxRingAddrHI, 984 s->RxRingAddrLO, cplus_rx_ring_desc); 985 986 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI; 987 988 pci_dma_read(d, cplus_rx_ring_desc, &val, 4); 989 rxdw0 = le32_to_cpu(val); 990 pci_dma_read(d, cplus_rx_ring_desc+4, &val, 4); 991 rxdw1 = le32_to_cpu(val); 992 pci_dma_read(d, cplus_rx_ring_desc+8, &val, 4); 993 rxbufLO = le32_to_cpu(val); 994 pci_dma_read(d, cplus_rx_ring_desc+12, &val, 4); 995 rxbufHI = le32_to_cpu(val); 996 997 DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n", 998 descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI); 999 1000 if (!(rxdw0 & CP_RX_OWN)) 1001 { 1002 DPRINTF("C+ Rx mode : descriptor %d is owned by host\n", 1003 descriptor); 1004 1005 s->IntrStatus |= RxOverflow; 1006 ++s->RxMissed; 1007 1008 /* update tally counter */ 1009 ++s->tally_counters.RxERR; 1010 ++s->tally_counters.MissPkt; 1011 1012 rtl8139_update_irq(s); 1013 return size_; 1014 } 1015 1016 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK; 1017 1018 /* write VLAN info to descriptor variables. */ 1019 if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *) 1020 &buf[ETHER_ADDR_LEN * 2]) == ETH_P_8021Q) { 1021 dot1q_buf = &buf[ETHER_ADDR_LEN * 2]; 1022 size -= VLAN_HLEN; 1023 /* if too small buffer, use the tailroom added duing expansion */ 1024 if (size < MIN_BUF_SIZE) { 1025 size = MIN_BUF_SIZE; 1026 } 1027 1028 rxdw1 &= ~CP_RX_VLAN_TAG_MASK; 1029 /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */ 1030 rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *) 1031 &dot1q_buf[ETHER_TYPE_LEN]); 1032 1033 DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n", 1034 be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN])); 1035 } else { 1036 /* reset VLAN tag flag */ 1037 rxdw1 &= ~CP_RX_TAVA; 1038 } 1039 1040 /* TODO: scatter the packet over available receive ring descriptors space */ 1041 1042 if (size+4 > rx_space) 1043 { 1044 DPRINTF("C+ Rx mode : descriptor %d size %d received %d + 4\n", 1045 descriptor, rx_space, size); 1046 1047 s->IntrStatus |= RxOverflow; 1048 ++s->RxMissed; 1049 1050 /* update tally counter */ 1051 ++s->tally_counters.RxERR; 1052 ++s->tally_counters.MissPkt; 1053 1054 rtl8139_update_irq(s); 1055 return size_; 1056 } 1057 1058 dma_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI); 1059 1060 /* receive/copy to target memory */ 1061 if (dot1q_buf) { 1062 pci_dma_write(d, rx_addr, buf, 2 * ETHER_ADDR_LEN); 1063 pci_dma_write(d, rx_addr + 2 * ETHER_ADDR_LEN, 1064 buf + 2 * ETHER_ADDR_LEN + VLAN_HLEN, 1065 size - 2 * ETHER_ADDR_LEN); 1066 } else { 1067 pci_dma_write(d, rx_addr, buf, size); 1068 } 1069 1070 if (s->CpCmd & CPlusRxChkSum) 1071 { 1072 /* do some packet checksumming */ 1073 } 1074 1075 /* write checksum */ 1076 val = cpu_to_le32(crc32(0, buf, size_)); 1077 pci_dma_write(d, rx_addr+size, (uint8_t *)&val, 4); 1078 1079 /* first segment of received packet flag */ 1080 #define CP_RX_STATUS_FS (1<<29) 1081 /* last segment of received packet flag */ 1082 #define CP_RX_STATUS_LS (1<<28) 1083 /* multicast packet flag */ 1084 #define CP_RX_STATUS_MAR (1<<26) 1085 /* physical-matching packet flag */ 1086 #define CP_RX_STATUS_PAM (1<<25) 1087 /* broadcast packet flag */ 1088 #define CP_RX_STATUS_BAR (1<<24) 1089 /* runt packet flag */ 1090 #define CP_RX_STATUS_RUNT (1<<19) 1091 /* crc error flag */ 1092 #define CP_RX_STATUS_CRC (1<<18) 1093 /* IP checksum error flag */ 1094 #define CP_RX_STATUS_IPF (1<<15) 1095 /* UDP checksum error flag */ 1096 #define CP_RX_STATUS_UDPF (1<<14) 1097 /* TCP checksum error flag */ 1098 #define CP_RX_STATUS_TCPF (1<<13) 1099 1100 /* transfer ownership to target */ 1101 rxdw0 &= ~CP_RX_OWN; 1102 1103 /* set first segment bit */ 1104 rxdw0 |= CP_RX_STATUS_FS; 1105 1106 /* set last segment bit */ 1107 rxdw0 |= CP_RX_STATUS_LS; 1108 1109 /* set received packet type flags */ 1110 if (packet_header & RxBroadcast) 1111 rxdw0 |= CP_RX_STATUS_BAR; 1112 if (packet_header & RxMulticast) 1113 rxdw0 |= CP_RX_STATUS_MAR; 1114 if (packet_header & RxPhysical) 1115 rxdw0 |= CP_RX_STATUS_PAM; 1116 1117 /* set received size */ 1118 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK; 1119 rxdw0 |= (size+4); 1120 1121 /* update ring data */ 1122 val = cpu_to_le32(rxdw0); 1123 pci_dma_write(d, cplus_rx_ring_desc, (uint8_t *)&val, 4); 1124 val = cpu_to_le32(rxdw1); 1125 pci_dma_write(d, cplus_rx_ring_desc+4, (uint8_t *)&val, 4); 1126 1127 /* update tally counter */ 1128 ++s->tally_counters.RxOk; 1129 1130 /* seek to next Rx descriptor */ 1131 if (rxdw0 & CP_RX_EOR) 1132 { 1133 s->currCPlusRxDesc = 0; 1134 } 1135 else 1136 { 1137 ++s->currCPlusRxDesc; 1138 } 1139 1140 DPRINTF("done C+ Rx mode ----------------\n"); 1141 1142 } 1143 else 1144 { 1145 DPRINTF("in ring Rx mode ================\n"); 1146 1147 /* begin ring receiver mode */ 1148 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize); 1149 1150 /* if receiver buffer is empty then avail == 0 */ 1151 1152 if (avail != 0 && size + 8 >= avail) 1153 { 1154 DPRINTF("rx overflow: rx buffer length %d head 0x%04x " 1155 "read 0x%04x === available 0x%04x need 0x%04x\n", 1156 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8); 1157 1158 s->IntrStatus |= RxOverflow; 1159 ++s->RxMissed; 1160 rtl8139_update_irq(s); 1161 return size_; 1162 } 1163 1164 packet_header |= RxStatusOK; 1165 1166 packet_header |= (((size+4) << 16) & 0xffff0000); 1167 1168 /* write header */ 1169 uint32_t val = cpu_to_le32(packet_header); 1170 1171 rtl8139_write_buffer(s, (uint8_t *)&val, 4); 1172 1173 rtl8139_write_buffer(s, buf, size); 1174 1175 /* write checksum */ 1176 val = cpu_to_le32(crc32(0, buf, size)); 1177 rtl8139_write_buffer(s, (uint8_t *)&val, 4); 1178 1179 /* correct buffer write pointer */ 1180 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize); 1181 1182 /* now we can signal we have received something */ 1183 1184 DPRINTF("received: rx buffer length %d head 0x%04x read 0x%04x\n", 1185 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr); 1186 } 1187 1188 s->IntrStatus |= RxOK; 1189 1190 if (do_interrupt) 1191 { 1192 rtl8139_update_irq(s); 1193 } 1194 1195 return size_; 1196 } 1197 1198 static ssize_t rtl8139_receive(NetClientState *nc, const uint8_t *buf, size_t size) 1199 { 1200 return rtl8139_do_receive(nc, buf, size, 1); 1201 } 1202 1203 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize) 1204 { 1205 s->RxBufferSize = bufferSize; 1206 s->RxBufPtr = 0; 1207 s->RxBufAddr = 0; 1208 } 1209 1210 static void rtl8139_reset(DeviceState *d) 1211 { 1212 RTL8139State *s = RTL8139(d); 1213 int i; 1214 1215 /* restore MAC address */ 1216 memcpy(s->phys, s->conf.macaddr.a, 6); 1217 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys); 1218 1219 /* reset interrupt mask */ 1220 s->IntrStatus = 0; 1221 s->IntrMask = 0; 1222 1223 rtl8139_update_irq(s); 1224 1225 /* mark all status registers as owned by host */ 1226 for (i = 0; i < 4; ++i) 1227 { 1228 s->TxStatus[i] = TxHostOwns; 1229 } 1230 1231 s->currTxDesc = 0; 1232 s->currCPlusRxDesc = 0; 1233 s->currCPlusTxDesc = 0; 1234 1235 s->RxRingAddrLO = 0; 1236 s->RxRingAddrHI = 0; 1237 1238 s->RxBuf = 0; 1239 1240 rtl8139_reset_rxring(s, 8192); 1241 1242 /* ACK the reset */ 1243 s->TxConfig = 0; 1244 1245 #if 0 1246 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk 1247 s->clock_enabled = 0; 1248 #else 1249 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake 1250 s->clock_enabled = 1; 1251 #endif 1252 1253 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */; 1254 1255 /* set initial state data */ 1256 s->Config0 = 0x0; /* No boot ROM */ 1257 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */ 1258 s->Config3 = 0x1; /* fast back-to-back compatible */ 1259 s->Config5 = 0x0; 1260 1261 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD; 1262 1263 s->CpCmd = 0x0; /* reset C+ mode */ 1264 s->cplus_enabled = 0; 1265 1266 1267 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation 1268 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex 1269 s->BasicModeCtrl = 0x1000; // autonegotiation 1270 1271 s->BasicModeStatus = 0x7809; 1272 //s->BasicModeStatus |= 0x0040; /* UTP medium */ 1273 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */ 1274 /* preserve link state */ 1275 s->BasicModeStatus |= qemu_get_queue(s->nic)->link_down ? 0 : 0x04; 1276 1277 s->NWayAdvert = 0x05e1; /* all modes, full duplex */ 1278 s->NWayLPAR = 0x05e1; /* all modes, full duplex */ 1279 s->NWayExpansion = 0x0001; /* autonegotiation supported */ 1280 1281 /* also reset timer and disable timer interrupt */ 1282 s->TCTR = 0; 1283 s->TimerInt = 0; 1284 s->TCTR_base = 0; 1285 1286 /* reset tally counters */ 1287 RTL8139TallyCounters_clear(&s->tally_counters); 1288 } 1289 1290 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters) 1291 { 1292 counters->TxOk = 0; 1293 counters->RxOk = 0; 1294 counters->TxERR = 0; 1295 counters->RxERR = 0; 1296 counters->MissPkt = 0; 1297 counters->FAE = 0; 1298 counters->Tx1Col = 0; 1299 counters->TxMCol = 0; 1300 counters->RxOkPhy = 0; 1301 counters->RxOkBrd = 0; 1302 counters->RxOkMul = 0; 1303 counters->TxAbt = 0; 1304 counters->TxUndrn = 0; 1305 } 1306 1307 static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr) 1308 { 1309 PCIDevice *d = PCI_DEVICE(s); 1310 RTL8139TallyCounters *tally_counters = &s->tally_counters; 1311 uint16_t val16; 1312 uint32_t val32; 1313 uint64_t val64; 1314 1315 val64 = cpu_to_le64(tally_counters->TxOk); 1316 pci_dma_write(d, tc_addr + 0, (uint8_t *)&val64, 8); 1317 1318 val64 = cpu_to_le64(tally_counters->RxOk); 1319 pci_dma_write(d, tc_addr + 8, (uint8_t *)&val64, 8); 1320 1321 val64 = cpu_to_le64(tally_counters->TxERR); 1322 pci_dma_write(d, tc_addr + 16, (uint8_t *)&val64, 8); 1323 1324 val32 = cpu_to_le32(tally_counters->RxERR); 1325 pci_dma_write(d, tc_addr + 24, (uint8_t *)&val32, 4); 1326 1327 val16 = cpu_to_le16(tally_counters->MissPkt); 1328 pci_dma_write(d, tc_addr + 28, (uint8_t *)&val16, 2); 1329 1330 val16 = cpu_to_le16(tally_counters->FAE); 1331 pci_dma_write(d, tc_addr + 30, (uint8_t *)&val16, 2); 1332 1333 val32 = cpu_to_le32(tally_counters->Tx1Col); 1334 pci_dma_write(d, tc_addr + 32, (uint8_t *)&val32, 4); 1335 1336 val32 = cpu_to_le32(tally_counters->TxMCol); 1337 pci_dma_write(d, tc_addr + 36, (uint8_t *)&val32, 4); 1338 1339 val64 = cpu_to_le64(tally_counters->RxOkPhy); 1340 pci_dma_write(d, tc_addr + 40, (uint8_t *)&val64, 8); 1341 1342 val64 = cpu_to_le64(tally_counters->RxOkBrd); 1343 pci_dma_write(d, tc_addr + 48, (uint8_t *)&val64, 8); 1344 1345 val32 = cpu_to_le32(tally_counters->RxOkMul); 1346 pci_dma_write(d, tc_addr + 56, (uint8_t *)&val32, 4); 1347 1348 val16 = cpu_to_le16(tally_counters->TxAbt); 1349 pci_dma_write(d, tc_addr + 60, (uint8_t *)&val16, 2); 1350 1351 val16 = cpu_to_le16(tally_counters->TxUndrn); 1352 pci_dma_write(d, tc_addr + 62, (uint8_t *)&val16, 2); 1353 } 1354 1355 /* Loads values of tally counters from VM state file */ 1356 1357 static const VMStateDescription vmstate_tally_counters = { 1358 .name = "tally_counters", 1359 .version_id = 1, 1360 .minimum_version_id = 1, 1361 .minimum_version_id_old = 1, 1362 .fields = (VMStateField []) { 1363 VMSTATE_UINT64(TxOk, RTL8139TallyCounters), 1364 VMSTATE_UINT64(RxOk, RTL8139TallyCounters), 1365 VMSTATE_UINT64(TxERR, RTL8139TallyCounters), 1366 VMSTATE_UINT32(RxERR, RTL8139TallyCounters), 1367 VMSTATE_UINT16(MissPkt, RTL8139TallyCounters), 1368 VMSTATE_UINT16(FAE, RTL8139TallyCounters), 1369 VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters), 1370 VMSTATE_UINT32(TxMCol, RTL8139TallyCounters), 1371 VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters), 1372 VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters), 1373 VMSTATE_UINT16(TxAbt, RTL8139TallyCounters), 1374 VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters), 1375 VMSTATE_END_OF_LIST() 1376 } 1377 }; 1378 1379 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val) 1380 { 1381 DeviceState *d = DEVICE(s); 1382 1383 val &= 0xff; 1384 1385 DPRINTF("ChipCmd write val=0x%08x\n", val); 1386 1387 if (val & CmdReset) 1388 { 1389 DPRINTF("ChipCmd reset\n"); 1390 rtl8139_reset(d); 1391 } 1392 if (val & CmdRxEnb) 1393 { 1394 DPRINTF("ChipCmd enable receiver\n"); 1395 1396 s->currCPlusRxDesc = 0; 1397 } 1398 if (val & CmdTxEnb) 1399 { 1400 DPRINTF("ChipCmd enable transmitter\n"); 1401 1402 s->currCPlusTxDesc = 0; 1403 } 1404 1405 /* mask unwritable bits */ 1406 val = SET_MASKED(val, 0xe3, s->bChipCmdState); 1407 1408 /* Deassert reset pin before next read */ 1409 val &= ~CmdReset; 1410 1411 s->bChipCmdState = val; 1412 } 1413 1414 static int rtl8139_RxBufferEmpty(RTL8139State *s) 1415 { 1416 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize); 1417 1418 if (unread != 0) 1419 { 1420 DPRINTF("receiver buffer data available 0x%04x\n", unread); 1421 return 0; 1422 } 1423 1424 DPRINTF("receiver buffer is empty\n"); 1425 1426 return 1; 1427 } 1428 1429 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s) 1430 { 1431 uint32_t ret = s->bChipCmdState; 1432 1433 if (rtl8139_RxBufferEmpty(s)) 1434 ret |= RxBufEmpty; 1435 1436 DPRINTF("ChipCmd read val=0x%04x\n", ret); 1437 1438 return ret; 1439 } 1440 1441 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val) 1442 { 1443 val &= 0xffff; 1444 1445 DPRINTF("C+ command register write(w) val=0x%04x\n", val); 1446 1447 s->cplus_enabled = 1; 1448 1449 /* mask unwritable bits */ 1450 val = SET_MASKED(val, 0xff84, s->CpCmd); 1451 1452 s->CpCmd = val; 1453 } 1454 1455 static uint32_t rtl8139_CpCmd_read(RTL8139State *s) 1456 { 1457 uint32_t ret = s->CpCmd; 1458 1459 DPRINTF("C+ command register read(w) val=0x%04x\n", ret); 1460 1461 return ret; 1462 } 1463 1464 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val) 1465 { 1466 DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val); 1467 } 1468 1469 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s) 1470 { 1471 uint32_t ret = 0; 1472 1473 DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret); 1474 1475 return ret; 1476 } 1477 1478 static int rtl8139_config_writable(RTL8139State *s) 1479 { 1480 if ((s->Cfg9346 & Chip9346_op_mask) == Cfg9346_ConfigWrite) 1481 { 1482 return 1; 1483 } 1484 1485 DPRINTF("Configuration registers are write-protected\n"); 1486 1487 return 0; 1488 } 1489 1490 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val) 1491 { 1492 val &= 0xffff; 1493 1494 DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val); 1495 1496 /* mask unwritable bits */ 1497 uint32_t mask = 0x4cff; 1498 1499 if (1 || !rtl8139_config_writable(s)) 1500 { 1501 /* Speed setting and autonegotiation enable bits are read-only */ 1502 mask |= 0x3000; 1503 /* Duplex mode setting is read-only */ 1504 mask |= 0x0100; 1505 } 1506 1507 val = SET_MASKED(val, mask, s->BasicModeCtrl); 1508 1509 s->BasicModeCtrl = val; 1510 } 1511 1512 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s) 1513 { 1514 uint32_t ret = s->BasicModeCtrl; 1515 1516 DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret); 1517 1518 return ret; 1519 } 1520 1521 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val) 1522 { 1523 val &= 0xffff; 1524 1525 DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val); 1526 1527 /* mask unwritable bits */ 1528 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus); 1529 1530 s->BasicModeStatus = val; 1531 } 1532 1533 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s) 1534 { 1535 uint32_t ret = s->BasicModeStatus; 1536 1537 DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret); 1538 1539 return ret; 1540 } 1541 1542 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val) 1543 { 1544 DeviceState *d = DEVICE(s); 1545 1546 val &= 0xff; 1547 1548 DPRINTF("Cfg9346 write val=0x%02x\n", val); 1549 1550 /* mask unwritable bits */ 1551 val = SET_MASKED(val, 0x31, s->Cfg9346); 1552 1553 uint32_t opmode = val & 0xc0; 1554 uint32_t eeprom_val = val & 0xf; 1555 1556 if (opmode == 0x80) { 1557 /* eeprom access */ 1558 int eecs = (eeprom_val & 0x08)?1:0; 1559 int eesk = (eeprom_val & 0x04)?1:0; 1560 int eedi = (eeprom_val & 0x02)?1:0; 1561 prom9346_set_wire(s, eecs, eesk, eedi); 1562 } else if (opmode == 0x40) { 1563 /* Reset. */ 1564 val = 0; 1565 rtl8139_reset(d); 1566 } 1567 1568 s->Cfg9346 = val; 1569 } 1570 1571 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s) 1572 { 1573 uint32_t ret = s->Cfg9346; 1574 1575 uint32_t opmode = ret & 0xc0; 1576 1577 if (opmode == 0x80) 1578 { 1579 /* eeprom access */ 1580 int eedo = prom9346_get_wire(s); 1581 if (eedo) 1582 { 1583 ret |= 0x01; 1584 } 1585 else 1586 { 1587 ret &= ~0x01; 1588 } 1589 } 1590 1591 DPRINTF("Cfg9346 read val=0x%02x\n", ret); 1592 1593 return ret; 1594 } 1595 1596 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val) 1597 { 1598 val &= 0xff; 1599 1600 DPRINTF("Config0 write val=0x%02x\n", val); 1601 1602 if (!rtl8139_config_writable(s)) { 1603 return; 1604 } 1605 1606 /* mask unwritable bits */ 1607 val = SET_MASKED(val, 0xf8, s->Config0); 1608 1609 s->Config0 = val; 1610 } 1611 1612 static uint32_t rtl8139_Config0_read(RTL8139State *s) 1613 { 1614 uint32_t ret = s->Config0; 1615 1616 DPRINTF("Config0 read val=0x%02x\n", ret); 1617 1618 return ret; 1619 } 1620 1621 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val) 1622 { 1623 val &= 0xff; 1624 1625 DPRINTF("Config1 write val=0x%02x\n", val); 1626 1627 if (!rtl8139_config_writable(s)) { 1628 return; 1629 } 1630 1631 /* mask unwritable bits */ 1632 val = SET_MASKED(val, 0xC, s->Config1); 1633 1634 s->Config1 = val; 1635 } 1636 1637 static uint32_t rtl8139_Config1_read(RTL8139State *s) 1638 { 1639 uint32_t ret = s->Config1; 1640 1641 DPRINTF("Config1 read val=0x%02x\n", ret); 1642 1643 return ret; 1644 } 1645 1646 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val) 1647 { 1648 val &= 0xff; 1649 1650 DPRINTF("Config3 write val=0x%02x\n", val); 1651 1652 if (!rtl8139_config_writable(s)) { 1653 return; 1654 } 1655 1656 /* mask unwritable bits */ 1657 val = SET_MASKED(val, 0x8F, s->Config3); 1658 1659 s->Config3 = val; 1660 } 1661 1662 static uint32_t rtl8139_Config3_read(RTL8139State *s) 1663 { 1664 uint32_t ret = s->Config3; 1665 1666 DPRINTF("Config3 read val=0x%02x\n", ret); 1667 1668 return ret; 1669 } 1670 1671 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val) 1672 { 1673 val &= 0xff; 1674 1675 DPRINTF("Config4 write val=0x%02x\n", val); 1676 1677 if (!rtl8139_config_writable(s)) { 1678 return; 1679 } 1680 1681 /* mask unwritable bits */ 1682 val = SET_MASKED(val, 0x0a, s->Config4); 1683 1684 s->Config4 = val; 1685 } 1686 1687 static uint32_t rtl8139_Config4_read(RTL8139State *s) 1688 { 1689 uint32_t ret = s->Config4; 1690 1691 DPRINTF("Config4 read val=0x%02x\n", ret); 1692 1693 return ret; 1694 } 1695 1696 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val) 1697 { 1698 val &= 0xff; 1699 1700 DPRINTF("Config5 write val=0x%02x\n", val); 1701 1702 /* mask unwritable bits */ 1703 val = SET_MASKED(val, 0x80, s->Config5); 1704 1705 s->Config5 = val; 1706 } 1707 1708 static uint32_t rtl8139_Config5_read(RTL8139State *s) 1709 { 1710 uint32_t ret = s->Config5; 1711 1712 DPRINTF("Config5 read val=0x%02x\n", ret); 1713 1714 return ret; 1715 } 1716 1717 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val) 1718 { 1719 if (!rtl8139_transmitter_enabled(s)) 1720 { 1721 DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val); 1722 return; 1723 } 1724 1725 DPRINTF("TxConfig write val=0x%08x\n", val); 1726 1727 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig); 1728 1729 s->TxConfig = val; 1730 } 1731 1732 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val) 1733 { 1734 DPRINTF("RTL8139C TxConfig via write(b) val=0x%02x\n", val); 1735 1736 uint32_t tc = s->TxConfig; 1737 tc &= 0xFFFFFF00; 1738 tc |= (val & 0x000000FF); 1739 rtl8139_TxConfig_write(s, tc); 1740 } 1741 1742 static uint32_t rtl8139_TxConfig_read(RTL8139State *s) 1743 { 1744 uint32_t ret = s->TxConfig; 1745 1746 DPRINTF("TxConfig read val=0x%04x\n", ret); 1747 1748 return ret; 1749 } 1750 1751 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val) 1752 { 1753 DPRINTF("RxConfig write val=0x%08x\n", val); 1754 1755 /* mask unwritable bits */ 1756 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig); 1757 1758 s->RxConfig = val; 1759 1760 /* reset buffer size and read/write pointers */ 1761 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3)); 1762 1763 DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize); 1764 } 1765 1766 static uint32_t rtl8139_RxConfig_read(RTL8139State *s) 1767 { 1768 uint32_t ret = s->RxConfig; 1769 1770 DPRINTF("RxConfig read val=0x%08x\n", ret); 1771 1772 return ret; 1773 } 1774 1775 static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size, 1776 int do_interrupt, const uint8_t *dot1q_buf) 1777 { 1778 struct iovec *iov = NULL; 1779 1780 if (!size) 1781 { 1782 DPRINTF("+++ empty ethernet frame\n"); 1783 return; 1784 } 1785 1786 if (dot1q_buf && size >= ETHER_ADDR_LEN * 2) { 1787 iov = (struct iovec[3]) { 1788 { .iov_base = buf, .iov_len = ETHER_ADDR_LEN * 2 }, 1789 { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN }, 1790 { .iov_base = buf + ETHER_ADDR_LEN * 2, 1791 .iov_len = size - ETHER_ADDR_LEN * 2 }, 1792 }; 1793 } 1794 1795 if (TxLoopBack == (s->TxConfig & TxLoopBack)) 1796 { 1797 size_t buf2_size; 1798 uint8_t *buf2; 1799 1800 if (iov) { 1801 buf2_size = iov_size(iov, 3); 1802 buf2 = g_malloc(buf2_size); 1803 iov_to_buf(iov, 3, 0, buf2, buf2_size); 1804 buf = buf2; 1805 } 1806 1807 DPRINTF("+++ transmit loopback mode\n"); 1808 rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt); 1809 1810 if (iov) { 1811 g_free(buf2); 1812 } 1813 } 1814 else 1815 { 1816 if (iov) { 1817 qemu_sendv_packet(qemu_get_queue(s->nic), iov, 3); 1818 } else { 1819 qemu_send_packet(qemu_get_queue(s->nic), buf, size); 1820 } 1821 } 1822 } 1823 1824 static int rtl8139_transmit_one(RTL8139State *s, int descriptor) 1825 { 1826 if (!rtl8139_transmitter_enabled(s)) 1827 { 1828 DPRINTF("+++ cannot transmit from descriptor %d: transmitter " 1829 "disabled\n", descriptor); 1830 return 0; 1831 } 1832 1833 if (s->TxStatus[descriptor] & TxHostOwns) 1834 { 1835 DPRINTF("+++ cannot transmit from descriptor %d: owned by host " 1836 "(%08x)\n", descriptor, s->TxStatus[descriptor]); 1837 return 0; 1838 } 1839 1840 DPRINTF("+++ transmitting from descriptor %d\n", descriptor); 1841 1842 PCIDevice *d = PCI_DEVICE(s); 1843 int txsize = s->TxStatus[descriptor] & 0x1fff; 1844 uint8_t txbuffer[0x2000]; 1845 1846 DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n", 1847 txsize, s->TxAddr[descriptor]); 1848 1849 pci_dma_read(d, s->TxAddr[descriptor], txbuffer, txsize); 1850 1851 /* Mark descriptor as transferred */ 1852 s->TxStatus[descriptor] |= TxHostOwns; 1853 s->TxStatus[descriptor] |= TxStatOK; 1854 1855 rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL); 1856 1857 DPRINTF("+++ transmitted %d bytes from descriptor %d\n", txsize, 1858 descriptor); 1859 1860 /* update interrupt */ 1861 s->IntrStatus |= TxOK; 1862 rtl8139_update_irq(s); 1863 1864 return 1; 1865 } 1866 1867 /* structures and macros for task offloading */ 1868 typedef struct ip_header 1869 { 1870 uint8_t ip_ver_len; /* version and header length */ 1871 uint8_t ip_tos; /* type of service */ 1872 uint16_t ip_len; /* total length */ 1873 uint16_t ip_id; /* identification */ 1874 uint16_t ip_off; /* fragment offset field */ 1875 uint8_t ip_ttl; /* time to live */ 1876 uint8_t ip_p; /* protocol */ 1877 uint16_t ip_sum; /* checksum */ 1878 uint32_t ip_src,ip_dst; /* source and dest address */ 1879 } ip_header; 1880 1881 #define IP_HEADER_VERSION_4 4 1882 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf) 1883 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2) 1884 1885 typedef struct tcp_header 1886 { 1887 uint16_t th_sport; /* source port */ 1888 uint16_t th_dport; /* destination port */ 1889 uint32_t th_seq; /* sequence number */ 1890 uint32_t th_ack; /* acknowledgement number */ 1891 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */ 1892 uint16_t th_win; /* window */ 1893 uint16_t th_sum; /* checksum */ 1894 uint16_t th_urp; /* urgent pointer */ 1895 } tcp_header; 1896 1897 typedef struct udp_header 1898 { 1899 uint16_t uh_sport; /* source port */ 1900 uint16_t uh_dport; /* destination port */ 1901 uint16_t uh_ulen; /* udp length */ 1902 uint16_t uh_sum; /* udp checksum */ 1903 } udp_header; 1904 1905 typedef struct ip_pseudo_header 1906 { 1907 uint32_t ip_src; 1908 uint32_t ip_dst; 1909 uint8_t zeros; 1910 uint8_t ip_proto; 1911 uint16_t ip_payload; 1912 } ip_pseudo_header; 1913 1914 #define IP_PROTO_TCP 6 1915 #define IP_PROTO_UDP 17 1916 1917 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2) 1918 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f) 1919 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags)) 1920 1921 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off))) 1922 1923 #define TCP_FLAG_FIN 0x01 1924 #define TCP_FLAG_PUSH 0x08 1925 1926 /* produces ones' complement sum of data */ 1927 static uint16_t ones_complement_sum(uint8_t *data, size_t len) 1928 { 1929 uint32_t result = 0; 1930 1931 for (; len > 1; data+=2, len-=2) 1932 { 1933 result += *(uint16_t*)data; 1934 } 1935 1936 /* add the remainder byte */ 1937 if (len) 1938 { 1939 uint8_t odd[2] = {*data, 0}; 1940 result += *(uint16_t*)odd; 1941 } 1942 1943 while (result>>16) 1944 result = (result & 0xffff) + (result >> 16); 1945 1946 return result; 1947 } 1948 1949 static uint16_t ip_checksum(void *data, size_t len) 1950 { 1951 return ~ones_complement_sum((uint8_t*)data, len); 1952 } 1953 1954 static int rtl8139_cplus_transmit_one(RTL8139State *s) 1955 { 1956 if (!rtl8139_transmitter_enabled(s)) 1957 { 1958 DPRINTF("+++ C+ mode: transmitter disabled\n"); 1959 return 0; 1960 } 1961 1962 if (!rtl8139_cp_transmitter_enabled(s)) 1963 { 1964 DPRINTF("+++ C+ mode: C+ transmitter disabled\n"); 1965 return 0 ; 1966 } 1967 1968 PCIDevice *d = PCI_DEVICE(s); 1969 int descriptor = s->currCPlusTxDesc; 1970 1971 dma_addr_t cplus_tx_ring_desc = rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]); 1972 1973 /* Normal priority ring */ 1974 cplus_tx_ring_desc += 16 * descriptor; 1975 1976 DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at " 1977 "%08x %08x = 0x"DMA_ADDR_FMT"\n", descriptor, s->TxAddr[1], 1978 s->TxAddr[0], cplus_tx_ring_desc); 1979 1980 uint32_t val, txdw0,txdw1,txbufLO,txbufHI; 1981 1982 pci_dma_read(d, cplus_tx_ring_desc, (uint8_t *)&val, 4); 1983 txdw0 = le32_to_cpu(val); 1984 pci_dma_read(d, cplus_tx_ring_desc+4, (uint8_t *)&val, 4); 1985 txdw1 = le32_to_cpu(val); 1986 pci_dma_read(d, cplus_tx_ring_desc+8, (uint8_t *)&val, 4); 1987 txbufLO = le32_to_cpu(val); 1988 pci_dma_read(d, cplus_tx_ring_desc+12, (uint8_t *)&val, 4); 1989 txbufHI = le32_to_cpu(val); 1990 1991 DPRINTF("+++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor, 1992 txdw0, txdw1, txbufLO, txbufHI); 1993 1994 /* w0 ownership flag */ 1995 #define CP_TX_OWN (1<<31) 1996 /* w0 end of ring flag */ 1997 #define CP_TX_EOR (1<<30) 1998 /* first segment of received packet flag */ 1999 #define CP_TX_FS (1<<29) 2000 /* last segment of received packet flag */ 2001 #define CP_TX_LS (1<<28) 2002 /* large send packet flag */ 2003 #define CP_TX_LGSEN (1<<27) 2004 /* large send MSS mask, bits 16...25 */ 2005 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1) 2006 2007 /* IP checksum offload flag */ 2008 #define CP_TX_IPCS (1<<18) 2009 /* UDP checksum offload flag */ 2010 #define CP_TX_UDPCS (1<<17) 2011 /* TCP checksum offload flag */ 2012 #define CP_TX_TCPCS (1<<16) 2013 2014 /* w0 bits 0...15 : buffer size */ 2015 #define CP_TX_BUFFER_SIZE (1<<16) 2016 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1) 2017 /* w1 add tag flag */ 2018 #define CP_TX_TAGC (1<<17) 2019 /* w1 bits 0...15 : VLAN tag (big endian) */ 2020 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1) 2021 /* w2 low 32bit of Rx buffer ptr */ 2022 /* w3 high 32bit of Rx buffer ptr */ 2023 2024 /* set after transmission */ 2025 /* FIFO underrun flag */ 2026 #define CP_TX_STATUS_UNF (1<<25) 2027 /* transmit error summary flag, valid if set any of three below */ 2028 #define CP_TX_STATUS_TES (1<<23) 2029 /* out-of-window collision flag */ 2030 #define CP_TX_STATUS_OWC (1<<22) 2031 /* link failure flag */ 2032 #define CP_TX_STATUS_LNKF (1<<21) 2033 /* excessive collisions flag */ 2034 #define CP_TX_STATUS_EXC (1<<20) 2035 2036 if (!(txdw0 & CP_TX_OWN)) 2037 { 2038 DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor); 2039 return 0 ; 2040 } 2041 2042 DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor); 2043 2044 if (txdw0 & CP_TX_FS) 2045 { 2046 DPRINTF("+++ C+ Tx mode : descriptor %d is first segment " 2047 "descriptor\n", descriptor); 2048 2049 /* reset internal buffer offset */ 2050 s->cplus_txbuffer_offset = 0; 2051 } 2052 2053 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK; 2054 dma_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI); 2055 2056 /* make sure we have enough space to assemble the packet */ 2057 if (!s->cplus_txbuffer) 2058 { 2059 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE; 2060 s->cplus_txbuffer = g_malloc(s->cplus_txbuffer_len); 2061 s->cplus_txbuffer_offset = 0; 2062 2063 DPRINTF("+++ C+ mode transmission buffer allocated space %d\n", 2064 s->cplus_txbuffer_len); 2065 } 2066 2067 if (s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len) 2068 { 2069 /* The spec didn't tell the maximum size, stick to CP_TX_BUFFER_SIZE */ 2070 txsize = s->cplus_txbuffer_len - s->cplus_txbuffer_offset; 2071 DPRINTF("+++ C+ mode transmission buffer overrun, truncated descriptor" 2072 "length to %d\n", txsize); 2073 } 2074 2075 if (!s->cplus_txbuffer) 2076 { 2077 /* out of memory */ 2078 2079 DPRINTF("+++ C+ mode transmiter failed to reallocate %d bytes\n", 2080 s->cplus_txbuffer_len); 2081 2082 /* update tally counter */ 2083 ++s->tally_counters.TxERR; 2084 ++s->tally_counters.TxAbt; 2085 2086 return 0; 2087 } 2088 2089 /* append more data to the packet */ 2090 2091 DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at " 2092 DMA_ADDR_FMT" to offset %d\n", txsize, tx_addr, 2093 s->cplus_txbuffer_offset); 2094 2095 pci_dma_read(d, tx_addr, 2096 s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize); 2097 s->cplus_txbuffer_offset += txsize; 2098 2099 /* seek to next Rx descriptor */ 2100 if (txdw0 & CP_TX_EOR) 2101 { 2102 s->currCPlusTxDesc = 0; 2103 } 2104 else 2105 { 2106 ++s->currCPlusTxDesc; 2107 if (s->currCPlusTxDesc >= 64) 2108 s->currCPlusTxDesc = 0; 2109 } 2110 2111 /* transfer ownership to target */ 2112 txdw0 &= ~CP_RX_OWN; 2113 2114 /* reset error indicator bits */ 2115 txdw0 &= ~CP_TX_STATUS_UNF; 2116 txdw0 &= ~CP_TX_STATUS_TES; 2117 txdw0 &= ~CP_TX_STATUS_OWC; 2118 txdw0 &= ~CP_TX_STATUS_LNKF; 2119 txdw0 &= ~CP_TX_STATUS_EXC; 2120 2121 /* update ring data */ 2122 val = cpu_to_le32(txdw0); 2123 pci_dma_write(d, cplus_tx_ring_desc, (uint8_t *)&val, 4); 2124 2125 /* Now decide if descriptor being processed is holding the last segment of packet */ 2126 if (txdw0 & CP_TX_LS) 2127 { 2128 uint8_t dot1q_buffer_space[VLAN_HLEN]; 2129 uint16_t *dot1q_buffer; 2130 2131 DPRINTF("+++ C+ Tx mode : descriptor %d is last segment descriptor\n", 2132 descriptor); 2133 2134 /* can transfer fully assembled packet */ 2135 2136 uint8_t *saved_buffer = s->cplus_txbuffer; 2137 int saved_size = s->cplus_txbuffer_offset; 2138 int saved_buffer_len = s->cplus_txbuffer_len; 2139 2140 /* create vlan tag */ 2141 if (txdw1 & CP_TX_TAGC) { 2142 /* the vlan tag is in BE byte order in the descriptor 2143 * BE + le_to_cpu() + ~swap()~ = cpu */ 2144 DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n", 2145 bswap16(txdw1 & CP_TX_VLAN_TAG_MASK)); 2146 2147 dot1q_buffer = (uint16_t *) dot1q_buffer_space; 2148 dot1q_buffer[0] = cpu_to_be16(ETH_P_8021Q); 2149 /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */ 2150 dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK); 2151 } else { 2152 dot1q_buffer = NULL; 2153 } 2154 2155 /* reset the card space to protect from recursive call */ 2156 s->cplus_txbuffer = NULL; 2157 s->cplus_txbuffer_offset = 0; 2158 s->cplus_txbuffer_len = 0; 2159 2160 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN)) 2161 { 2162 DPRINTF("+++ C+ mode offloaded task checksum\n"); 2163 2164 /* ip packet header */ 2165 ip_header *ip = NULL; 2166 int hlen = 0; 2167 uint8_t ip_protocol = 0; 2168 uint16_t ip_data_len = 0; 2169 2170 uint8_t *eth_payload_data = NULL; 2171 size_t eth_payload_len = 0; 2172 2173 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12)); 2174 if (proto == ETH_P_IP) 2175 { 2176 DPRINTF("+++ C+ mode has IP packet\n"); 2177 2178 /* not aligned */ 2179 eth_payload_data = saved_buffer + ETH_HLEN; 2180 eth_payload_len = saved_size - ETH_HLEN; 2181 2182 ip = (ip_header*)eth_payload_data; 2183 2184 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) { 2185 DPRINTF("+++ C+ mode packet has bad IP version %d " 2186 "expected %d\n", IP_HEADER_VERSION(ip), 2187 IP_HEADER_VERSION_4); 2188 ip = NULL; 2189 } else { 2190 hlen = IP_HEADER_LENGTH(ip); 2191 ip_protocol = ip->ip_p; 2192 ip_data_len = be16_to_cpu(ip->ip_len) - hlen; 2193 } 2194 } 2195 2196 if (ip) 2197 { 2198 if (txdw0 & CP_TX_IPCS) 2199 { 2200 DPRINTF("+++ C+ mode need IP checksum\n"); 2201 2202 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */ 2203 /* bad packet header len */ 2204 /* or packet too short */ 2205 } 2206 else 2207 { 2208 ip->ip_sum = 0; 2209 ip->ip_sum = ip_checksum(ip, hlen); 2210 DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n", 2211 hlen, ip->ip_sum); 2212 } 2213 } 2214 2215 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP) 2216 { 2217 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK; 2218 2219 DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d " 2220 "frame data %d specified MSS=%d\n", ETH_MTU, 2221 ip_data_len, saved_size - ETH_HLEN, large_send_mss); 2222 2223 int tcp_send_offset = 0; 2224 int send_count = 0; 2225 2226 /* maximum IP header length is 60 bytes */ 2227 uint8_t saved_ip_header[60]; 2228 2229 /* save IP header template; data area is used in tcp checksum calculation */ 2230 memcpy(saved_ip_header, eth_payload_data, hlen); 2231 2232 /* a placeholder for checksum calculation routine in tcp case */ 2233 uint8_t *data_to_checksum = eth_payload_data + hlen - 12; 2234 // size_t data_to_checksum_len = eth_payload_len - hlen + 12; 2235 2236 /* pointer to TCP header */ 2237 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen); 2238 2239 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr); 2240 2241 /* ETH_MTU = ip header len + tcp header len + payload */ 2242 int tcp_data_len = ip_data_len - tcp_hlen; 2243 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen; 2244 2245 DPRINTF("+++ C+ mode TSO IP data len %d TCP hlen %d TCP " 2246 "data len %d TCP chunk size %d\n", ip_data_len, 2247 tcp_hlen, tcp_data_len, tcp_chunk_size); 2248 2249 /* note the cycle below overwrites IP header data, 2250 but restores it from saved_ip_header before sending packet */ 2251 2252 int is_last_frame = 0; 2253 2254 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size) 2255 { 2256 uint16_t chunk_size = tcp_chunk_size; 2257 2258 /* check if this is the last frame */ 2259 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len) 2260 { 2261 is_last_frame = 1; 2262 chunk_size = tcp_data_len - tcp_send_offset; 2263 } 2264 2265 DPRINTF("+++ C+ mode TSO TCP seqno %08x\n", 2266 be32_to_cpu(p_tcp_hdr->th_seq)); 2267 2268 /* add 4 TCP pseudoheader fields */ 2269 /* copy IP source and destination fields */ 2270 memcpy(data_to_checksum, saved_ip_header + 12, 8); 2271 2272 DPRINTF("+++ C+ mode TSO calculating TCP checksum for " 2273 "packet with %d bytes data\n", tcp_hlen + 2274 chunk_size); 2275 2276 if (tcp_send_offset) 2277 { 2278 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size); 2279 } 2280 2281 /* keep PUSH and FIN flags only for the last frame */ 2282 if (!is_last_frame) 2283 { 2284 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN); 2285 } 2286 2287 /* recalculate TCP checksum */ 2288 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum; 2289 p_tcpip_hdr->zeros = 0; 2290 p_tcpip_hdr->ip_proto = IP_PROTO_TCP; 2291 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size); 2292 2293 p_tcp_hdr->th_sum = 0; 2294 2295 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12); 2296 DPRINTF("+++ C+ mode TSO TCP checksum %04x\n", 2297 tcp_checksum); 2298 2299 p_tcp_hdr->th_sum = tcp_checksum; 2300 2301 /* restore IP header */ 2302 memcpy(eth_payload_data, saved_ip_header, hlen); 2303 2304 /* set IP data length and recalculate IP checksum */ 2305 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size); 2306 2307 /* increment IP id for subsequent frames */ 2308 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id)); 2309 2310 ip->ip_sum = 0; 2311 ip->ip_sum = ip_checksum(eth_payload_data, hlen); 2312 DPRINTF("+++ C+ mode TSO IP header len=%d " 2313 "checksum=%04x\n", hlen, ip->ip_sum); 2314 2315 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size; 2316 DPRINTF("+++ C+ mode TSO transferring packet size " 2317 "%d\n", tso_send_size); 2318 rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 2319 0, (uint8_t *) dot1q_buffer); 2320 2321 /* add transferred count to TCP sequence number */ 2322 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq)); 2323 ++send_count; 2324 } 2325 2326 /* Stop sending this frame */ 2327 saved_size = 0; 2328 } 2329 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS)) 2330 { 2331 DPRINTF("+++ C+ mode need TCP or UDP checksum\n"); 2332 2333 /* maximum IP header length is 60 bytes */ 2334 uint8_t saved_ip_header[60]; 2335 memcpy(saved_ip_header, eth_payload_data, hlen); 2336 2337 uint8_t *data_to_checksum = eth_payload_data + hlen - 12; 2338 // size_t data_to_checksum_len = eth_payload_len - hlen + 12; 2339 2340 /* add 4 TCP pseudoheader fields */ 2341 /* copy IP source and destination fields */ 2342 memcpy(data_to_checksum, saved_ip_header + 12, 8); 2343 2344 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP) 2345 { 2346 DPRINTF("+++ C+ mode calculating TCP checksum for " 2347 "packet with %d bytes data\n", ip_data_len); 2348 2349 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum; 2350 p_tcpip_hdr->zeros = 0; 2351 p_tcpip_hdr->ip_proto = IP_PROTO_TCP; 2352 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len); 2353 2354 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12); 2355 2356 p_tcp_hdr->th_sum = 0; 2357 2358 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12); 2359 DPRINTF("+++ C+ mode TCP checksum %04x\n", 2360 tcp_checksum); 2361 2362 p_tcp_hdr->th_sum = tcp_checksum; 2363 } 2364 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP) 2365 { 2366 DPRINTF("+++ C+ mode calculating UDP checksum for " 2367 "packet with %d bytes data\n", ip_data_len); 2368 2369 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum; 2370 p_udpip_hdr->zeros = 0; 2371 p_udpip_hdr->ip_proto = IP_PROTO_UDP; 2372 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len); 2373 2374 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12); 2375 2376 p_udp_hdr->uh_sum = 0; 2377 2378 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12); 2379 DPRINTF("+++ C+ mode UDP checksum %04x\n", 2380 udp_checksum); 2381 2382 p_udp_hdr->uh_sum = udp_checksum; 2383 } 2384 2385 /* restore IP header */ 2386 memcpy(eth_payload_data, saved_ip_header, hlen); 2387 } 2388 } 2389 } 2390 2391 /* update tally counter */ 2392 ++s->tally_counters.TxOk; 2393 2394 DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size); 2395 2396 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1, 2397 (uint8_t *) dot1q_buffer); 2398 2399 /* restore card space if there was no recursion and reset offset */ 2400 if (!s->cplus_txbuffer) 2401 { 2402 s->cplus_txbuffer = saved_buffer; 2403 s->cplus_txbuffer_len = saved_buffer_len; 2404 s->cplus_txbuffer_offset = 0; 2405 } 2406 else 2407 { 2408 g_free(saved_buffer); 2409 } 2410 } 2411 else 2412 { 2413 DPRINTF("+++ C+ mode transmission continue to next descriptor\n"); 2414 } 2415 2416 return 1; 2417 } 2418 2419 static void rtl8139_cplus_transmit(RTL8139State *s) 2420 { 2421 int txcount = 0; 2422 2423 while (rtl8139_cplus_transmit_one(s)) 2424 { 2425 ++txcount; 2426 } 2427 2428 /* Mark transfer completed */ 2429 if (!txcount) 2430 { 2431 DPRINTF("C+ mode : transmitter queue stalled, current TxDesc = %d\n", 2432 s->currCPlusTxDesc); 2433 } 2434 else 2435 { 2436 /* update interrupt status */ 2437 s->IntrStatus |= TxOK; 2438 rtl8139_update_irq(s); 2439 } 2440 } 2441 2442 static void rtl8139_transmit(RTL8139State *s) 2443 { 2444 int descriptor = s->currTxDesc, txcount = 0; 2445 2446 /*while*/ 2447 if (rtl8139_transmit_one(s, descriptor)) 2448 { 2449 ++s->currTxDesc; 2450 s->currTxDesc %= 4; 2451 ++txcount; 2452 } 2453 2454 /* Mark transfer completed */ 2455 if (!txcount) 2456 { 2457 DPRINTF("transmitter queue stalled, current TxDesc = %d\n", 2458 s->currTxDesc); 2459 } 2460 } 2461 2462 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val) 2463 { 2464 2465 int descriptor = txRegOffset/4; 2466 2467 /* handle C+ transmit mode register configuration */ 2468 2469 if (s->cplus_enabled) 2470 { 2471 DPRINTF("RTL8139C+ DTCCR write offset=0x%x val=0x%08x " 2472 "descriptor=%d\n", txRegOffset, val, descriptor); 2473 2474 /* handle Dump Tally Counters command */ 2475 s->TxStatus[descriptor] = val; 2476 2477 if (descriptor == 0 && (val & 0x8)) 2478 { 2479 hwaddr tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]); 2480 2481 /* dump tally counters to specified memory location */ 2482 RTL8139TallyCounters_dma_write(s, tc_addr); 2483 2484 /* mark dump completed */ 2485 s->TxStatus[0] &= ~0x8; 2486 } 2487 2488 return; 2489 } 2490 2491 DPRINTF("TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", 2492 txRegOffset, val, descriptor); 2493 2494 /* mask only reserved bits */ 2495 val &= ~0xff00c000; /* these bits are reset on write */ 2496 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]); 2497 2498 s->TxStatus[descriptor] = val; 2499 2500 /* attempt to start transmission */ 2501 rtl8139_transmit(s); 2502 } 2503 2504 static uint32_t rtl8139_TxStatus_TxAddr_read(RTL8139State *s, uint32_t regs[], 2505 uint32_t base, uint8_t addr, 2506 int size) 2507 { 2508 uint32_t reg = (addr - base) / 4; 2509 uint32_t offset = addr & 0x3; 2510 uint32_t ret = 0; 2511 2512 if (addr & (size - 1)) { 2513 DPRINTF("not implemented read for TxStatus/TxAddr " 2514 "addr=0x%x size=0x%x\n", addr, size); 2515 return ret; 2516 } 2517 2518 switch (size) { 2519 case 1: /* fall through */ 2520 case 2: /* fall through */ 2521 case 4: 2522 ret = (regs[reg] >> offset * 8) & (((uint64_t)1 << (size * 8)) - 1); 2523 DPRINTF("TxStatus/TxAddr[%d] read addr=0x%x size=0x%x val=0x%08x\n", 2524 reg, addr, size, ret); 2525 break; 2526 default: 2527 DPRINTF("unsupported size 0x%x of TxStatus/TxAddr reading\n", size); 2528 break; 2529 } 2530 2531 return ret; 2532 } 2533 2534 static uint16_t rtl8139_TSAD_read(RTL8139State *s) 2535 { 2536 uint16_t ret = 0; 2537 2538 /* Simulate TSAD, it is read only anyway */ 2539 2540 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0) 2541 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0) 2542 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0) 2543 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0) 2544 2545 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0) 2546 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0) 2547 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0) 2548 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0) 2549 2550 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0) 2551 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0) 2552 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0) 2553 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0) 2554 2555 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0) 2556 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0) 2557 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0) 2558 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ; 2559 2560 2561 DPRINTF("TSAD read val=0x%04x\n", ret); 2562 2563 return ret; 2564 } 2565 2566 static uint16_t rtl8139_CSCR_read(RTL8139State *s) 2567 { 2568 uint16_t ret = s->CSCR; 2569 2570 DPRINTF("CSCR read val=0x%04x\n", ret); 2571 2572 return ret; 2573 } 2574 2575 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val) 2576 { 2577 DPRINTF("TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val); 2578 2579 s->TxAddr[txAddrOffset/4] = val; 2580 } 2581 2582 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset) 2583 { 2584 uint32_t ret = s->TxAddr[txAddrOffset/4]; 2585 2586 DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret); 2587 2588 return ret; 2589 } 2590 2591 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val) 2592 { 2593 DPRINTF("RxBufPtr write val=0x%04x\n", val); 2594 2595 /* this value is off by 16 */ 2596 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize); 2597 2598 /* more buffer space may be available so try to receive */ 2599 qemu_flush_queued_packets(qemu_get_queue(s->nic)); 2600 2601 DPRINTF(" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n", 2602 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr); 2603 } 2604 2605 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s) 2606 { 2607 /* this value is off by 16 */ 2608 uint32_t ret = s->RxBufPtr - 0x10; 2609 2610 DPRINTF("RxBufPtr read val=0x%04x\n", ret); 2611 2612 return ret; 2613 } 2614 2615 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s) 2616 { 2617 /* this value is NOT off by 16 */ 2618 uint32_t ret = s->RxBufAddr; 2619 2620 DPRINTF("RxBufAddr read val=0x%04x\n", ret); 2621 2622 return ret; 2623 } 2624 2625 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val) 2626 { 2627 DPRINTF("RxBuf write val=0x%08x\n", val); 2628 2629 s->RxBuf = val; 2630 2631 /* may need to reset rxring here */ 2632 } 2633 2634 static uint32_t rtl8139_RxBuf_read(RTL8139State *s) 2635 { 2636 uint32_t ret = s->RxBuf; 2637 2638 DPRINTF("RxBuf read val=0x%08x\n", ret); 2639 2640 return ret; 2641 } 2642 2643 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val) 2644 { 2645 DPRINTF("IntrMask write(w) val=0x%04x\n", val); 2646 2647 /* mask unwritable bits */ 2648 val = SET_MASKED(val, 0x1e00, s->IntrMask); 2649 2650 s->IntrMask = val; 2651 2652 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 2653 rtl8139_update_irq(s); 2654 2655 } 2656 2657 static uint32_t rtl8139_IntrMask_read(RTL8139State *s) 2658 { 2659 uint32_t ret = s->IntrMask; 2660 2661 DPRINTF("IntrMask read(w) val=0x%04x\n", ret); 2662 2663 return ret; 2664 } 2665 2666 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val) 2667 { 2668 DPRINTF("IntrStatus write(w) val=0x%04x\n", val); 2669 2670 #if 0 2671 2672 /* writing to ISR has no effect */ 2673 2674 return; 2675 2676 #else 2677 uint16_t newStatus = s->IntrStatus & ~val; 2678 2679 /* mask unwritable bits */ 2680 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus); 2681 2682 /* writing 1 to interrupt status register bit clears it */ 2683 s->IntrStatus = 0; 2684 rtl8139_update_irq(s); 2685 2686 s->IntrStatus = newStatus; 2687 /* 2688 * Computing if we miss an interrupt here is not that correct but 2689 * considered that we should have had already an interrupt 2690 * and probably emulated is slower is better to assume this resetting was 2691 * done before testing on previous rtl8139_update_irq lead to IRQ losing 2692 */ 2693 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 2694 rtl8139_update_irq(s); 2695 2696 #endif 2697 } 2698 2699 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s) 2700 { 2701 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 2702 2703 uint32_t ret = s->IntrStatus; 2704 2705 DPRINTF("IntrStatus read(w) val=0x%04x\n", ret); 2706 2707 #if 0 2708 2709 /* reading ISR clears all interrupts */ 2710 s->IntrStatus = 0; 2711 2712 rtl8139_update_irq(s); 2713 2714 #endif 2715 2716 return ret; 2717 } 2718 2719 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val) 2720 { 2721 DPRINTF("MultiIntr write(w) val=0x%04x\n", val); 2722 2723 /* mask unwritable bits */ 2724 val = SET_MASKED(val, 0xf000, s->MultiIntr); 2725 2726 s->MultiIntr = val; 2727 } 2728 2729 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s) 2730 { 2731 uint32_t ret = s->MultiIntr; 2732 2733 DPRINTF("MultiIntr read(w) val=0x%04x\n", ret); 2734 2735 return ret; 2736 } 2737 2738 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val) 2739 { 2740 RTL8139State *s = opaque; 2741 2742 switch (addr) 2743 { 2744 case MAC0 ... MAC0+4: 2745 s->phys[addr - MAC0] = val; 2746 break; 2747 case MAC0+5: 2748 s->phys[addr - MAC0] = val; 2749 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys); 2750 break; 2751 case MAC0+6 ... MAC0+7: 2752 /* reserved */ 2753 break; 2754 case MAR0 ... MAR0+7: 2755 s->mult[addr - MAR0] = val; 2756 break; 2757 case ChipCmd: 2758 rtl8139_ChipCmd_write(s, val); 2759 break; 2760 case Cfg9346: 2761 rtl8139_Cfg9346_write(s, val); 2762 break; 2763 case TxConfig: /* windows driver sometimes writes using byte-lenth call */ 2764 rtl8139_TxConfig_writeb(s, val); 2765 break; 2766 case Config0: 2767 rtl8139_Config0_write(s, val); 2768 break; 2769 case Config1: 2770 rtl8139_Config1_write(s, val); 2771 break; 2772 case Config3: 2773 rtl8139_Config3_write(s, val); 2774 break; 2775 case Config4: 2776 rtl8139_Config4_write(s, val); 2777 break; 2778 case Config5: 2779 rtl8139_Config5_write(s, val); 2780 break; 2781 case MediaStatus: 2782 /* ignore */ 2783 DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n", 2784 val); 2785 break; 2786 2787 case HltClk: 2788 DPRINTF("HltClk write val=0x%08x\n", val); 2789 if (val == 'R') 2790 { 2791 s->clock_enabled = 1; 2792 } 2793 else if (val == 'H') 2794 { 2795 s->clock_enabled = 0; 2796 } 2797 break; 2798 2799 case TxThresh: 2800 DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val); 2801 s->TxThresh = val; 2802 break; 2803 2804 case TxPoll: 2805 DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val); 2806 if (val & (1 << 7)) 2807 { 2808 DPRINTF("C+ TxPoll high priority transmission (not " 2809 "implemented)\n"); 2810 //rtl8139_cplus_transmit(s); 2811 } 2812 if (val & (1 << 6)) 2813 { 2814 DPRINTF("C+ TxPoll normal priority transmission\n"); 2815 rtl8139_cplus_transmit(s); 2816 } 2817 2818 break; 2819 2820 default: 2821 DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr, 2822 val); 2823 break; 2824 } 2825 } 2826 2827 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val) 2828 { 2829 RTL8139State *s = opaque; 2830 2831 switch (addr) 2832 { 2833 case IntrMask: 2834 rtl8139_IntrMask_write(s, val); 2835 break; 2836 2837 case IntrStatus: 2838 rtl8139_IntrStatus_write(s, val); 2839 break; 2840 2841 case MultiIntr: 2842 rtl8139_MultiIntr_write(s, val); 2843 break; 2844 2845 case RxBufPtr: 2846 rtl8139_RxBufPtr_write(s, val); 2847 break; 2848 2849 case BasicModeCtrl: 2850 rtl8139_BasicModeCtrl_write(s, val); 2851 break; 2852 case BasicModeStatus: 2853 rtl8139_BasicModeStatus_write(s, val); 2854 break; 2855 case NWayAdvert: 2856 DPRINTF("NWayAdvert write(w) val=0x%04x\n", val); 2857 s->NWayAdvert = val; 2858 break; 2859 case NWayLPAR: 2860 DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val); 2861 break; 2862 case NWayExpansion: 2863 DPRINTF("NWayExpansion write(w) val=0x%04x\n", val); 2864 s->NWayExpansion = val; 2865 break; 2866 2867 case CpCmd: 2868 rtl8139_CpCmd_write(s, val); 2869 break; 2870 2871 case IntrMitigate: 2872 rtl8139_IntrMitigate_write(s, val); 2873 break; 2874 2875 default: 2876 DPRINTF("ioport write(w) addr=0x%x val=0x%04x via write(b)\n", 2877 addr, val); 2878 2879 rtl8139_io_writeb(opaque, addr, val & 0xff); 2880 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff); 2881 break; 2882 } 2883 } 2884 2885 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time) 2886 { 2887 int64_t pci_time, next_time; 2888 uint32_t low_pci; 2889 2890 DPRINTF("entered rtl8139_set_next_tctr_time\n"); 2891 2892 if (s->TimerExpire && current_time >= s->TimerExpire) { 2893 s->IntrStatus |= PCSTimeout; 2894 rtl8139_update_irq(s); 2895 } 2896 2897 /* Set QEMU timer only if needed that is 2898 * - TimerInt <> 0 (we have a timer) 2899 * - mask = 1 (we want an interrupt timer) 2900 * - irq = 0 (irq is not already active) 2901 * If any of above change we need to compute timer again 2902 * Also we must check if timer is passed without QEMU timer 2903 */ 2904 s->TimerExpire = 0; 2905 if (!s->TimerInt) { 2906 return; 2907 } 2908 2909 pci_time = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY, 2910 get_ticks_per_sec()); 2911 low_pci = pci_time & 0xffffffff; 2912 pci_time = pci_time - low_pci + s->TimerInt; 2913 if (low_pci >= s->TimerInt) { 2914 pci_time += 0x100000000LL; 2915 } 2916 next_time = s->TCTR_base + muldiv64(pci_time, get_ticks_per_sec(), 2917 PCI_FREQUENCY); 2918 s->TimerExpire = next_time; 2919 2920 if ((s->IntrMask & PCSTimeout) != 0 && (s->IntrStatus & PCSTimeout) == 0) { 2921 timer_mod(s->timer, next_time); 2922 } 2923 } 2924 2925 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val) 2926 { 2927 RTL8139State *s = opaque; 2928 2929 switch (addr) 2930 { 2931 case RxMissed: 2932 DPRINTF("RxMissed clearing on write\n"); 2933 s->RxMissed = 0; 2934 break; 2935 2936 case TxConfig: 2937 rtl8139_TxConfig_write(s, val); 2938 break; 2939 2940 case RxConfig: 2941 rtl8139_RxConfig_write(s, val); 2942 break; 2943 2944 case TxStatus0 ... TxStatus0+4*4-1: 2945 rtl8139_TxStatus_write(s, addr-TxStatus0, val); 2946 break; 2947 2948 case TxAddr0 ... TxAddr0+4*4-1: 2949 rtl8139_TxAddr_write(s, addr-TxAddr0, val); 2950 break; 2951 2952 case RxBuf: 2953 rtl8139_RxBuf_write(s, val); 2954 break; 2955 2956 case RxRingAddrLO: 2957 DPRINTF("C+ RxRing low bits write val=0x%08x\n", val); 2958 s->RxRingAddrLO = val; 2959 break; 2960 2961 case RxRingAddrHI: 2962 DPRINTF("C+ RxRing high bits write val=0x%08x\n", val); 2963 s->RxRingAddrHI = val; 2964 break; 2965 2966 case Timer: 2967 DPRINTF("TCTR Timer reset on write\n"); 2968 s->TCTR_base = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 2969 rtl8139_set_next_tctr_time(s, s->TCTR_base); 2970 break; 2971 2972 case FlashReg: 2973 DPRINTF("FlashReg TimerInt write val=0x%08x\n", val); 2974 if (s->TimerInt != val) { 2975 s->TimerInt = val; 2976 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 2977 } 2978 break; 2979 2980 default: 2981 DPRINTF("ioport write(l) addr=0x%x val=0x%08x via write(b)\n", 2982 addr, val); 2983 rtl8139_io_writeb(opaque, addr, val & 0xff); 2984 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff); 2985 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff); 2986 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff); 2987 break; 2988 } 2989 } 2990 2991 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr) 2992 { 2993 RTL8139State *s = opaque; 2994 int ret; 2995 2996 switch (addr) 2997 { 2998 case MAC0 ... MAC0+5: 2999 ret = s->phys[addr - MAC0]; 3000 break; 3001 case MAC0+6 ... MAC0+7: 3002 ret = 0; 3003 break; 3004 case MAR0 ... MAR0+7: 3005 ret = s->mult[addr - MAR0]; 3006 break; 3007 case TxStatus0 ... TxStatus0+4*4-1: 3008 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0, 3009 addr, 1); 3010 break; 3011 case ChipCmd: 3012 ret = rtl8139_ChipCmd_read(s); 3013 break; 3014 case Cfg9346: 3015 ret = rtl8139_Cfg9346_read(s); 3016 break; 3017 case Config0: 3018 ret = rtl8139_Config0_read(s); 3019 break; 3020 case Config1: 3021 ret = rtl8139_Config1_read(s); 3022 break; 3023 case Config3: 3024 ret = rtl8139_Config3_read(s); 3025 break; 3026 case Config4: 3027 ret = rtl8139_Config4_read(s); 3028 break; 3029 case Config5: 3030 ret = rtl8139_Config5_read(s); 3031 break; 3032 3033 case MediaStatus: 3034 /* The LinkDown bit of MediaStatus is inverse with link status */ 3035 ret = 0xd0 | (~s->BasicModeStatus & 0x04); 3036 DPRINTF("MediaStatus read 0x%x\n", ret); 3037 break; 3038 3039 case HltClk: 3040 ret = s->clock_enabled; 3041 DPRINTF("HltClk read 0x%x\n", ret); 3042 break; 3043 3044 case PCIRevisionID: 3045 ret = RTL8139_PCI_REVID; 3046 DPRINTF("PCI Revision ID read 0x%x\n", ret); 3047 break; 3048 3049 case TxThresh: 3050 ret = s->TxThresh; 3051 DPRINTF("C+ TxThresh read(b) val=0x%02x\n", ret); 3052 break; 3053 3054 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */ 3055 ret = s->TxConfig >> 24; 3056 DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret); 3057 break; 3058 3059 default: 3060 DPRINTF("not implemented read(b) addr=0x%x\n", addr); 3061 ret = 0; 3062 break; 3063 } 3064 3065 return ret; 3066 } 3067 3068 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr) 3069 { 3070 RTL8139State *s = opaque; 3071 uint32_t ret; 3072 3073 switch (addr) 3074 { 3075 case TxAddr0 ... TxAddr0+4*4-1: 3076 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxAddr, TxAddr0, addr, 2); 3077 break; 3078 case IntrMask: 3079 ret = rtl8139_IntrMask_read(s); 3080 break; 3081 3082 case IntrStatus: 3083 ret = rtl8139_IntrStatus_read(s); 3084 break; 3085 3086 case MultiIntr: 3087 ret = rtl8139_MultiIntr_read(s); 3088 break; 3089 3090 case RxBufPtr: 3091 ret = rtl8139_RxBufPtr_read(s); 3092 break; 3093 3094 case RxBufAddr: 3095 ret = rtl8139_RxBufAddr_read(s); 3096 break; 3097 3098 case BasicModeCtrl: 3099 ret = rtl8139_BasicModeCtrl_read(s); 3100 break; 3101 case BasicModeStatus: 3102 ret = rtl8139_BasicModeStatus_read(s); 3103 break; 3104 case NWayAdvert: 3105 ret = s->NWayAdvert; 3106 DPRINTF("NWayAdvert read(w) val=0x%04x\n", ret); 3107 break; 3108 case NWayLPAR: 3109 ret = s->NWayLPAR; 3110 DPRINTF("NWayLPAR read(w) val=0x%04x\n", ret); 3111 break; 3112 case NWayExpansion: 3113 ret = s->NWayExpansion; 3114 DPRINTF("NWayExpansion read(w) val=0x%04x\n", ret); 3115 break; 3116 3117 case CpCmd: 3118 ret = rtl8139_CpCmd_read(s); 3119 break; 3120 3121 case IntrMitigate: 3122 ret = rtl8139_IntrMitigate_read(s); 3123 break; 3124 3125 case TxSummary: 3126 ret = rtl8139_TSAD_read(s); 3127 break; 3128 3129 case CSCR: 3130 ret = rtl8139_CSCR_read(s); 3131 break; 3132 3133 default: 3134 DPRINTF("ioport read(w) addr=0x%x via read(b)\n", addr); 3135 3136 ret = rtl8139_io_readb(opaque, addr); 3137 ret |= rtl8139_io_readb(opaque, addr + 1) << 8; 3138 3139 DPRINTF("ioport read(w) addr=0x%x val=0x%04x\n", addr, ret); 3140 break; 3141 } 3142 3143 return ret; 3144 } 3145 3146 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr) 3147 { 3148 RTL8139State *s = opaque; 3149 uint32_t ret; 3150 3151 switch (addr) 3152 { 3153 case RxMissed: 3154 ret = s->RxMissed; 3155 3156 DPRINTF("RxMissed read val=0x%08x\n", ret); 3157 break; 3158 3159 case TxConfig: 3160 ret = rtl8139_TxConfig_read(s); 3161 break; 3162 3163 case RxConfig: 3164 ret = rtl8139_RxConfig_read(s); 3165 break; 3166 3167 case TxStatus0 ... TxStatus0+4*4-1: 3168 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0, 3169 addr, 4); 3170 break; 3171 3172 case TxAddr0 ... TxAddr0+4*4-1: 3173 ret = rtl8139_TxAddr_read(s, addr-TxAddr0); 3174 break; 3175 3176 case RxBuf: 3177 ret = rtl8139_RxBuf_read(s); 3178 break; 3179 3180 case RxRingAddrLO: 3181 ret = s->RxRingAddrLO; 3182 DPRINTF("C+ RxRing low bits read val=0x%08x\n", ret); 3183 break; 3184 3185 case RxRingAddrHI: 3186 ret = s->RxRingAddrHI; 3187 DPRINTF("C+ RxRing high bits read val=0x%08x\n", ret); 3188 break; 3189 3190 case Timer: 3191 ret = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - s->TCTR_base, 3192 PCI_FREQUENCY, get_ticks_per_sec()); 3193 DPRINTF("TCTR Timer read val=0x%08x\n", ret); 3194 break; 3195 3196 case FlashReg: 3197 ret = s->TimerInt; 3198 DPRINTF("FlashReg TimerInt read val=0x%08x\n", ret); 3199 break; 3200 3201 default: 3202 DPRINTF("ioport read(l) addr=0x%x via read(b)\n", addr); 3203 3204 ret = rtl8139_io_readb(opaque, addr); 3205 ret |= rtl8139_io_readb(opaque, addr + 1) << 8; 3206 ret |= rtl8139_io_readb(opaque, addr + 2) << 16; 3207 ret |= rtl8139_io_readb(opaque, addr + 3) << 24; 3208 3209 DPRINTF("read(l) addr=0x%x val=%08x\n", addr, ret); 3210 break; 3211 } 3212 3213 return ret; 3214 } 3215 3216 /* */ 3217 3218 static void rtl8139_mmio_writeb(void *opaque, hwaddr addr, uint32_t val) 3219 { 3220 rtl8139_io_writeb(opaque, addr & 0xFF, val); 3221 } 3222 3223 static void rtl8139_mmio_writew(void *opaque, hwaddr addr, uint32_t val) 3224 { 3225 rtl8139_io_writew(opaque, addr & 0xFF, val); 3226 } 3227 3228 static void rtl8139_mmio_writel(void *opaque, hwaddr addr, uint32_t val) 3229 { 3230 rtl8139_io_writel(opaque, addr & 0xFF, val); 3231 } 3232 3233 static uint32_t rtl8139_mmio_readb(void *opaque, hwaddr addr) 3234 { 3235 return rtl8139_io_readb(opaque, addr & 0xFF); 3236 } 3237 3238 static uint32_t rtl8139_mmio_readw(void *opaque, hwaddr addr) 3239 { 3240 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF); 3241 return val; 3242 } 3243 3244 static uint32_t rtl8139_mmio_readl(void *opaque, hwaddr addr) 3245 { 3246 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF); 3247 return val; 3248 } 3249 3250 static int rtl8139_post_load(void *opaque, int version_id) 3251 { 3252 RTL8139State* s = opaque; 3253 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 3254 if (version_id < 4) { 3255 s->cplus_enabled = s->CpCmd != 0; 3256 } 3257 3258 /* nc.link_down can't be migrated, so infer link_down according 3259 * to link status bit in BasicModeStatus */ 3260 qemu_get_queue(s->nic)->link_down = (s->BasicModeStatus & 0x04) == 0; 3261 3262 return 0; 3263 } 3264 3265 static bool rtl8139_hotplug_ready_needed(void *opaque) 3266 { 3267 return qdev_machine_modified(); 3268 } 3269 3270 static const VMStateDescription vmstate_rtl8139_hotplug_ready ={ 3271 .name = "rtl8139/hotplug_ready", 3272 .version_id = 1, 3273 .minimum_version_id = 1, 3274 .minimum_version_id_old = 1, 3275 .fields = (VMStateField []) { 3276 VMSTATE_END_OF_LIST() 3277 } 3278 }; 3279 3280 static void rtl8139_pre_save(void *opaque) 3281 { 3282 RTL8139State* s = opaque; 3283 int64_t current_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 3284 3285 /* set IntrStatus correctly */ 3286 rtl8139_set_next_tctr_time(s, current_time); 3287 s->TCTR = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY, 3288 get_ticks_per_sec()); 3289 s->rtl8139_mmio_io_addr_dummy = 0; 3290 } 3291 3292 static const VMStateDescription vmstate_rtl8139 = { 3293 .name = "rtl8139", 3294 .version_id = 4, 3295 .minimum_version_id = 3, 3296 .minimum_version_id_old = 3, 3297 .post_load = rtl8139_post_load, 3298 .pre_save = rtl8139_pre_save, 3299 .fields = (VMStateField []) { 3300 VMSTATE_PCI_DEVICE(parent_obj, RTL8139State), 3301 VMSTATE_PARTIAL_BUFFER(phys, RTL8139State, 6), 3302 VMSTATE_BUFFER(mult, RTL8139State), 3303 VMSTATE_UINT32_ARRAY(TxStatus, RTL8139State, 4), 3304 VMSTATE_UINT32_ARRAY(TxAddr, RTL8139State, 4), 3305 3306 VMSTATE_UINT32(RxBuf, RTL8139State), 3307 VMSTATE_UINT32(RxBufferSize, RTL8139State), 3308 VMSTATE_UINT32(RxBufPtr, RTL8139State), 3309 VMSTATE_UINT32(RxBufAddr, RTL8139State), 3310 3311 VMSTATE_UINT16(IntrStatus, RTL8139State), 3312 VMSTATE_UINT16(IntrMask, RTL8139State), 3313 3314 VMSTATE_UINT32(TxConfig, RTL8139State), 3315 VMSTATE_UINT32(RxConfig, RTL8139State), 3316 VMSTATE_UINT32(RxMissed, RTL8139State), 3317 VMSTATE_UINT16(CSCR, RTL8139State), 3318 3319 VMSTATE_UINT8(Cfg9346, RTL8139State), 3320 VMSTATE_UINT8(Config0, RTL8139State), 3321 VMSTATE_UINT8(Config1, RTL8139State), 3322 VMSTATE_UINT8(Config3, RTL8139State), 3323 VMSTATE_UINT8(Config4, RTL8139State), 3324 VMSTATE_UINT8(Config5, RTL8139State), 3325 3326 VMSTATE_UINT8(clock_enabled, RTL8139State), 3327 VMSTATE_UINT8(bChipCmdState, RTL8139State), 3328 3329 VMSTATE_UINT16(MultiIntr, RTL8139State), 3330 3331 VMSTATE_UINT16(BasicModeCtrl, RTL8139State), 3332 VMSTATE_UINT16(BasicModeStatus, RTL8139State), 3333 VMSTATE_UINT16(NWayAdvert, RTL8139State), 3334 VMSTATE_UINT16(NWayLPAR, RTL8139State), 3335 VMSTATE_UINT16(NWayExpansion, RTL8139State), 3336 3337 VMSTATE_UINT16(CpCmd, RTL8139State), 3338 VMSTATE_UINT8(TxThresh, RTL8139State), 3339 3340 VMSTATE_UNUSED(4), 3341 VMSTATE_MACADDR(conf.macaddr, RTL8139State), 3342 VMSTATE_INT32(rtl8139_mmio_io_addr_dummy, RTL8139State), 3343 3344 VMSTATE_UINT32(currTxDesc, RTL8139State), 3345 VMSTATE_UINT32(currCPlusRxDesc, RTL8139State), 3346 VMSTATE_UINT32(currCPlusTxDesc, RTL8139State), 3347 VMSTATE_UINT32(RxRingAddrLO, RTL8139State), 3348 VMSTATE_UINT32(RxRingAddrHI, RTL8139State), 3349 3350 VMSTATE_UINT16_ARRAY(eeprom.contents, RTL8139State, EEPROM_9346_SIZE), 3351 VMSTATE_INT32(eeprom.mode, RTL8139State), 3352 VMSTATE_UINT32(eeprom.tick, RTL8139State), 3353 VMSTATE_UINT8(eeprom.address, RTL8139State), 3354 VMSTATE_UINT16(eeprom.input, RTL8139State), 3355 VMSTATE_UINT16(eeprom.output, RTL8139State), 3356 3357 VMSTATE_UINT8(eeprom.eecs, RTL8139State), 3358 VMSTATE_UINT8(eeprom.eesk, RTL8139State), 3359 VMSTATE_UINT8(eeprom.eedi, RTL8139State), 3360 VMSTATE_UINT8(eeprom.eedo, RTL8139State), 3361 3362 VMSTATE_UINT32(TCTR, RTL8139State), 3363 VMSTATE_UINT32(TimerInt, RTL8139State), 3364 VMSTATE_INT64(TCTR_base, RTL8139State), 3365 3366 VMSTATE_STRUCT(tally_counters, RTL8139State, 0, 3367 vmstate_tally_counters, RTL8139TallyCounters), 3368 3369 VMSTATE_UINT32_V(cplus_enabled, RTL8139State, 4), 3370 VMSTATE_END_OF_LIST() 3371 }, 3372 .subsections = (VMStateSubsection []) { 3373 { 3374 .vmsd = &vmstate_rtl8139_hotplug_ready, 3375 .needed = rtl8139_hotplug_ready_needed, 3376 }, { 3377 /* empty */ 3378 } 3379 } 3380 }; 3381 3382 /***********************************************************/ 3383 /* PCI RTL8139 definitions */ 3384 3385 static void rtl8139_ioport_write(void *opaque, hwaddr addr, 3386 uint64_t val, unsigned size) 3387 { 3388 switch (size) { 3389 case 1: 3390 rtl8139_io_writeb(opaque, addr, val); 3391 break; 3392 case 2: 3393 rtl8139_io_writew(opaque, addr, val); 3394 break; 3395 case 4: 3396 rtl8139_io_writel(opaque, addr, val); 3397 break; 3398 } 3399 } 3400 3401 static uint64_t rtl8139_ioport_read(void *opaque, hwaddr addr, 3402 unsigned size) 3403 { 3404 switch (size) { 3405 case 1: 3406 return rtl8139_io_readb(opaque, addr); 3407 case 2: 3408 return rtl8139_io_readw(opaque, addr); 3409 case 4: 3410 return rtl8139_io_readl(opaque, addr); 3411 } 3412 3413 return -1; 3414 } 3415 3416 static const MemoryRegionOps rtl8139_io_ops = { 3417 .read = rtl8139_ioport_read, 3418 .write = rtl8139_ioport_write, 3419 .impl = { 3420 .min_access_size = 1, 3421 .max_access_size = 4, 3422 }, 3423 .endianness = DEVICE_LITTLE_ENDIAN, 3424 }; 3425 3426 static const MemoryRegionOps rtl8139_mmio_ops = { 3427 .old_mmio = { 3428 .read = { 3429 rtl8139_mmio_readb, 3430 rtl8139_mmio_readw, 3431 rtl8139_mmio_readl, 3432 }, 3433 .write = { 3434 rtl8139_mmio_writeb, 3435 rtl8139_mmio_writew, 3436 rtl8139_mmio_writel, 3437 }, 3438 }, 3439 .endianness = DEVICE_LITTLE_ENDIAN, 3440 }; 3441 3442 static void rtl8139_timer(void *opaque) 3443 { 3444 RTL8139State *s = opaque; 3445 3446 if (!s->clock_enabled) 3447 { 3448 DPRINTF(">>> timer: clock is not running\n"); 3449 return; 3450 } 3451 3452 s->IntrStatus |= PCSTimeout; 3453 rtl8139_update_irq(s); 3454 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 3455 } 3456 3457 static void rtl8139_cleanup(NetClientState *nc) 3458 { 3459 RTL8139State *s = qemu_get_nic_opaque(nc); 3460 3461 s->nic = NULL; 3462 } 3463 3464 static void pci_rtl8139_uninit(PCIDevice *dev) 3465 { 3466 RTL8139State *s = RTL8139(dev); 3467 3468 memory_region_destroy(&s->bar_io); 3469 memory_region_destroy(&s->bar_mem); 3470 if (s->cplus_txbuffer) { 3471 g_free(s->cplus_txbuffer); 3472 s->cplus_txbuffer = NULL; 3473 } 3474 timer_del(s->timer); 3475 timer_free(s->timer); 3476 qemu_del_nic(s->nic); 3477 } 3478 3479 static void rtl8139_set_link_status(NetClientState *nc) 3480 { 3481 RTL8139State *s = qemu_get_nic_opaque(nc); 3482 3483 if (nc->link_down) { 3484 s->BasicModeStatus &= ~0x04; 3485 } else { 3486 s->BasicModeStatus |= 0x04; 3487 } 3488 3489 s->IntrStatus |= RxUnderrun; 3490 rtl8139_update_irq(s); 3491 } 3492 3493 static NetClientInfo net_rtl8139_info = { 3494 .type = NET_CLIENT_OPTIONS_KIND_NIC, 3495 .size = sizeof(NICState), 3496 .can_receive = rtl8139_can_receive, 3497 .receive = rtl8139_receive, 3498 .cleanup = rtl8139_cleanup, 3499 .link_status_changed = rtl8139_set_link_status, 3500 }; 3501 3502 static int pci_rtl8139_init(PCIDevice *dev) 3503 { 3504 RTL8139State *s = RTL8139(dev); 3505 DeviceState *d = DEVICE(dev); 3506 uint8_t *pci_conf; 3507 3508 pci_conf = dev->config; 3509 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */ 3510 /* TODO: start of capability list, but no capability 3511 * list bit in status register, and offset 0xdc seems unused. */ 3512 pci_conf[PCI_CAPABILITY_LIST] = 0xdc; 3513 3514 memory_region_init_io(&s->bar_io, OBJECT(s), &rtl8139_io_ops, s, 3515 "rtl8139", 0x100); 3516 memory_region_init_io(&s->bar_mem, OBJECT(s), &rtl8139_mmio_ops, s, 3517 "rtl8139", 0x100); 3518 pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->bar_io); 3519 pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar_mem); 3520 3521 qemu_macaddr_default_if_unset(&s->conf.macaddr); 3522 3523 /* prepare eeprom */ 3524 s->eeprom.contents[0] = 0x8129; 3525 #if 1 3526 /* PCI vendor and device ID should be mirrored here */ 3527 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK; 3528 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139; 3529 #endif 3530 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8; 3531 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8; 3532 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8; 3533 3534 s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf, 3535 object_get_typename(OBJECT(dev)), d->id, s); 3536 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); 3537 3538 s->cplus_txbuffer = NULL; 3539 s->cplus_txbuffer_len = 0; 3540 s->cplus_txbuffer_offset = 0; 3541 3542 s->TimerExpire = 0; 3543 s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, rtl8139_timer, s); 3544 rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 3545 3546 add_boot_device_path(s->conf.bootindex, d, "/ethernet-phy@0"); 3547 3548 return 0; 3549 } 3550 3551 static Property rtl8139_properties[] = { 3552 DEFINE_NIC_PROPERTIES(RTL8139State, conf), 3553 DEFINE_PROP_END_OF_LIST(), 3554 }; 3555 3556 static void rtl8139_class_init(ObjectClass *klass, void *data) 3557 { 3558 DeviceClass *dc = DEVICE_CLASS(klass); 3559 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 3560 3561 k->init = pci_rtl8139_init; 3562 k->exit = pci_rtl8139_uninit; 3563 k->romfile = "efi-rtl8139.rom"; 3564 k->vendor_id = PCI_VENDOR_ID_REALTEK; 3565 k->device_id = PCI_DEVICE_ID_REALTEK_8139; 3566 k->revision = RTL8139_PCI_REVID; /* >=0x20 is for 8139C+ */ 3567 k->class_id = PCI_CLASS_NETWORK_ETHERNET; 3568 dc->reset = rtl8139_reset; 3569 dc->vmsd = &vmstate_rtl8139; 3570 dc->props = rtl8139_properties; 3571 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 3572 } 3573 3574 static const TypeInfo rtl8139_info = { 3575 .name = TYPE_RTL8139, 3576 .parent = TYPE_PCI_DEVICE, 3577 .instance_size = sizeof(RTL8139State), 3578 .class_init = rtl8139_class_init, 3579 }; 3580 3581 static void rtl8139_register_types(void) 3582 { 3583 type_register_static(&rtl8139_info); 3584 } 3585 3586 type_init(rtl8139_register_types) 3587