/** * QEMU RTL8139 emulation * * Copyright (c) 2006 Igor Kovalenko * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * Modifications: * 2006-Jan-28 Mark Malakanov : TSAD and CSCR implementation (for Windows driver) * * 2006-Apr-28 Juergen Lock : EEPROM emulation changes for FreeBSD driver * HW revision ID changes for FreeBSD driver * * 2006-Jul-01 Igor Kovalenko : Implemented loopback mode for FreeBSD driver * Corrected packet transfer reassembly routine for 8139C+ mode * Rearranged debugging print statements * Implemented PCI timer interrupt (disabled by default) * Implemented Tally Counters, increased VM load/save version * Implemented IP/TCP/UDP checksum task offloading * * 2006-Jul-04 Igor Kovalenko : Implemented TCP segmentation offloading * Fixed MTU=1500 for produced ethernet frames * * 2006-Jul-09 Igor Kovalenko : Fixed TCP header length calculation while processing * segmentation offloading * Removed slirp.h dependency * Added rx/tx buffer reset when enabling rx/tx operation */ #include "hw.h" #include "pci.h" #include "qemu-timer.h" #include "net.h" /* debug RTL8139 card */ //#define DEBUG_RTL8139 1 #define PCI_FREQUENCY 33000000L /* debug RTL8139 card C+ mode only */ //#define DEBUG_RTL8139CP 1 /* Calculate CRCs properly on Rx packets */ #define RTL8139_CALCULATE_RXCRC 1 /* Uncomment to enable on-board timer interrupts */ //#define RTL8139_ONBOARD_TIMER 1 #if defined(RTL8139_CALCULATE_RXCRC) /* For crc32 */ #include #endif #define SET_MASKED(input, mask, curr) \ ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) ) /* arg % size for size which is a power of 2 */ #define MOD2(input, size) \ ( ( input ) & ( size - 1 ) ) #if defined (DEBUG_RTL8139) # define DEBUG_PRINT(x) do { printf x ; } while (0) #else # define DEBUG_PRINT(x) #endif /* Symbolic offsets to registers. */ enum RTL8139_registers { MAC0 = 0, /* Ethernet hardware address. */ MAR0 = 8, /* Multicast filter. */ TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */ /* Dump Tally Conter control register(64bit). C+ mode only */ TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */ RxBuf = 0x30, ChipCmd = 0x37, RxBufPtr = 0x38, RxBufAddr = 0x3A, IntrMask = 0x3C, IntrStatus = 0x3E, TxConfig = 0x40, RxConfig = 0x44, Timer = 0x48, /* A general-purpose counter. */ RxMissed = 0x4C, /* 24 bits valid, write clears. */ Cfg9346 = 0x50, Config0 = 0x51, Config1 = 0x52, FlashReg = 0x54, MediaStatus = 0x58, Config3 = 0x59, Config4 = 0x5A, /* absent on RTL-8139A */ HltClk = 0x5B, MultiIntr = 0x5C, PCIRevisionID = 0x5E, TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/ BasicModeCtrl = 0x62, BasicModeStatus = 0x64, NWayAdvert = 0x66, NWayLPAR = 0x68, NWayExpansion = 0x6A, /* Undocumented registers, but required for proper operation. */ FIFOTMS = 0x70, /* FIFO Control and test. */ CSCR = 0x74, /* Chip Status and Configuration Register. */ PARA78 = 0x78, PARA7c = 0x7c, /* Magic transceiver parameter register. */ Config5 = 0xD8, /* absent on RTL-8139A */ /* C+ mode */ TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */ RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */ CpCmd = 0xE0, /* C+ Command register (C+ mode only) */ IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */ RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */ RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */ TxThresh = 0xEC, /* Early Tx threshold */ }; enum ClearBitMasks { MultiIntrClear = 0xF000, ChipCmdClear = 0xE2, Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1), }; enum ChipCmdBits { CmdReset = 0x10, CmdRxEnb = 0x08, CmdTxEnb = 0x04, RxBufEmpty = 0x01, }; /* C+ mode */ enum CplusCmdBits { CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */ CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */ CPlusRxEnb = 0x0002, CPlusTxEnb = 0x0001, }; /* Interrupt register bits, using my own meaningful names. */ enum IntrStatusBits { PCIErr = 0x8000, PCSTimeout = 0x4000, RxFIFOOver = 0x40, RxUnderrun = 0x20, RxOverflow = 0x10, TxErr = 0x08, TxOK = 0x04, RxErr = 0x02, RxOK = 0x01, RxAckBits = RxFIFOOver | RxOverflow | RxOK, }; enum TxStatusBits { TxHostOwns = 0x2000, TxUnderrun = 0x4000, TxStatOK = 0x8000, TxOutOfWindow = 0x20000000, TxAborted = 0x40000000, TxCarrierLost = 0x80000000, }; enum RxStatusBits { RxMulticast = 0x8000, RxPhysical = 0x4000, RxBroadcast = 0x2000, RxBadSymbol = 0x0020, RxRunt = 0x0010, RxTooLong = 0x0008, RxCRCErr = 0x0004, RxBadAlign = 0x0002, RxStatusOK = 0x0001, }; /* Bits in RxConfig. */ enum rx_mode_bits { AcceptErr = 0x20, AcceptRunt = 0x10, AcceptBroadcast = 0x08, AcceptMulticast = 0x04, AcceptMyPhys = 0x02, AcceptAllPhys = 0x01, }; /* Bits in TxConfig. */ enum tx_config_bits { /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */ TxIFGShift = 24, TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */ TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */ TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */ TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */ TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */ TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */ TxClearAbt = (1 << 0), /* Clear abort (WO) */ TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */ TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */ TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */ }; /* Transmit Status of All Descriptors (TSAD) Register */ enum TSAD_bits { TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0 }; /* Bits in Config1 */ enum Config1Bits { Cfg1_PM_Enable = 0x01, Cfg1_VPD_Enable = 0x02, Cfg1_PIO = 0x04, Cfg1_MMIO = 0x08, LWAKE = 0x10, /* not on 8139, 8139A */ Cfg1_Driver_Load = 0x20, Cfg1_LED0 = 0x40, Cfg1_LED1 = 0x80, SLEEP = (1 << 1), /* only on 8139, 8139A */ PWRDN = (1 << 0), /* only on 8139, 8139A */ }; /* Bits in Config3 */ enum Config3Bits { Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */ Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */ Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */ Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */ Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */ Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */ Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */ Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */ }; /* Bits in Config4 */ enum Config4Bits { LWPTN = (1 << 2), /* not on 8139, 8139A */ }; /* Bits in Config5 */ enum Config5Bits { Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */ Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */ Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */ Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */ Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */ Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */ Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */ }; enum RxConfigBits { /* rx fifo threshold */ RxCfgFIFOShift = 13, RxCfgFIFONone = (7 << RxCfgFIFOShift), /* Max DMA burst */ RxCfgDMAShift = 8, RxCfgDMAUnlimited = (7 << RxCfgDMAShift), /* rx ring buffer length */ RxCfgRcv8K = 0, RxCfgRcv16K = (1 << 11), RxCfgRcv32K = (1 << 12), RxCfgRcv64K = (1 << 11) | (1 << 12), /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */ RxNoWrap = (1 << 7), }; /* Twister tuning parameters from RealTek. Completely undocumented, but required to tune bad links on some boards. */ /* enum CSCRBits { CSCR_LinkOKBit = 0x0400, CSCR_LinkChangeBit = 0x0800, CSCR_LinkStatusBits = 0x0f000, CSCR_LinkDownOffCmd = 0x003c0, CSCR_LinkDownCmd = 0x0f3c0, */ enum CSCRBits { CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */ 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*/ CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/ CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/ CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/ CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/ 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*/ CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/ CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/ }; enum Cfg9346Bits { Cfg9346_Lock = 0x00, Cfg9346_Unlock = 0xC0, }; typedef enum { CH_8139 = 0, CH_8139_K, CH_8139A, CH_8139A_G, CH_8139B, CH_8130, CH_8139C, CH_8100, CH_8100B_8139D, CH_8101, } chip_t; enum chip_flags { HasHltClk = (1 << 0), HasLWake = (1 << 1), }; #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \ (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22) #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1) #define RTL8139_PCI_REVID_8139 0x10 #define RTL8139_PCI_REVID_8139CPLUS 0x20 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS /* Size is 64 * 16bit words */ #define EEPROM_9346_ADDR_BITS 6 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS) #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1) enum Chip9346Operation { Chip9346_op_mask = 0xc0, /* 10 zzzzzz */ Chip9346_op_read = 0x80, /* 10 AAAAAA */ Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */ Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */ Chip9346_op_write_enable = 0x30, /* 00 11zzzz */ Chip9346_op_write_all = 0x10, /* 00 01zzzz */ Chip9346_op_write_disable = 0x00, /* 00 00zzzz */ }; enum Chip9346Mode { Chip9346_none = 0, Chip9346_enter_command_mode, Chip9346_read_command, Chip9346_data_read, /* from output register */ Chip9346_data_write, /* to input register, then to contents at specified address */ Chip9346_data_write_all, /* to input register, then filling contents */ }; typedef struct EEprom9346 { uint16_t contents[EEPROM_9346_SIZE]; int mode; uint32_t tick; uint8_t address; uint16_t input; uint16_t output; uint8_t eecs; uint8_t eesk; uint8_t eedi; uint8_t eedo; } EEprom9346; typedef struct RTL8139TallyCounters { /* Tally counters */ uint64_t TxOk; uint64_t RxOk; uint64_t TxERR; uint32_t RxERR; uint16_t MissPkt; uint16_t FAE; uint32_t Tx1Col; uint32_t TxMCol; uint64_t RxOkPhy; uint64_t RxOkBrd; uint32_t RxOkMul; uint16_t TxAbt; uint16_t TxUndrn; } RTL8139TallyCounters; /* Clears all tally counters */ static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters); /* Writes tally counters to specified physical memory address */ static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* counters); /* Loads values of tally counters from VM state file */ static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters); /* Saves values of tally counters to VM state file */ static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters); typedef struct RTL8139State { uint8_t phys[8]; /* mac address */ uint8_t mult[8]; /* multicast mask array */ uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */ uint32_t TxAddr[4]; /* TxAddr0 */ uint32_t RxBuf; /* Receive buffer */ uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */ uint32_t RxBufPtr; uint32_t RxBufAddr; uint16_t IntrStatus; uint16_t IntrMask; uint32_t TxConfig; uint32_t RxConfig; uint32_t RxMissed; uint16_t CSCR; uint8_t Cfg9346; uint8_t Config0; uint8_t Config1; uint8_t Config3; uint8_t Config4; uint8_t Config5; uint8_t clock_enabled; uint8_t bChipCmdState; uint16_t MultiIntr; uint16_t BasicModeCtrl; uint16_t BasicModeStatus; uint16_t NWayAdvert; uint16_t NWayLPAR; uint16_t NWayExpansion; uint16_t CpCmd; uint8_t TxThresh; PCIDevice *pci_dev; VLANClientState *vc; uint8_t macaddr[6]; int rtl8139_mmio_io_addr; /* C ring mode */ uint32_t currTxDesc; /* C+ mode */ uint32_t currCPlusRxDesc; uint32_t currCPlusTxDesc; uint32_t RxRingAddrLO; uint32_t RxRingAddrHI; EEprom9346 eeprom; uint32_t TCTR; uint32_t TimerInt; int64_t TCTR_base; /* Tally counters */ RTL8139TallyCounters tally_counters; /* Non-persistent data */ uint8_t *cplus_txbuffer; int cplus_txbuffer_len; int cplus_txbuffer_offset; /* PCI interrupt timer */ QEMUTimer *timer; } RTL8139State; static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command) { DEBUG_PRINT(("RTL8139: eeprom command 0x%02x\n", command)); switch (command & Chip9346_op_mask) { case Chip9346_op_read: { eeprom->address = command & EEPROM_9346_ADDR_MASK; eeprom->output = eeprom->contents[eeprom->address]; eeprom->eedo = 0; eeprom->tick = 0; eeprom->mode = Chip9346_data_read; DEBUG_PRINT(("RTL8139: eeprom read from address 0x%02x data=0x%04x\n", eeprom->address, eeprom->output)); } break; case Chip9346_op_write: { eeprom->address = command & EEPROM_9346_ADDR_MASK; eeprom->input = 0; eeprom->tick = 0; eeprom->mode = Chip9346_none; /* Chip9346_data_write */ DEBUG_PRINT(("RTL8139: eeprom begin write to address 0x%02x\n", eeprom->address)); } break; default: eeprom->mode = Chip9346_none; switch (command & Chip9346_op_ext_mask) { case Chip9346_op_write_enable: DEBUG_PRINT(("RTL8139: eeprom write enabled\n")); break; case Chip9346_op_write_all: DEBUG_PRINT(("RTL8139: eeprom begin write all\n")); break; case Chip9346_op_write_disable: DEBUG_PRINT(("RTL8139: eeprom write disabled\n")); break; } break; } } static void prom9346_shift_clock(EEprom9346 *eeprom) { int bit = eeprom->eedi?1:0; ++ eeprom->tick; DEBUG_PRINT(("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, eeprom->eedo)); switch (eeprom->mode) { case Chip9346_enter_command_mode: if (bit) { eeprom->mode = Chip9346_read_command; eeprom->tick = 0; eeprom->input = 0; DEBUG_PRINT(("eeprom: +++ synchronized, begin command read\n")); } break; case Chip9346_read_command: eeprom->input = (eeprom->input << 1) | (bit & 1); if (eeprom->tick == 8) { prom9346_decode_command(eeprom, eeprom->input & 0xff); } break; case Chip9346_data_read: eeprom->eedo = (eeprom->output & 0x8000)?1:0; eeprom->output <<= 1; if (eeprom->tick == 16) { #if 1 // the FreeBSD drivers (rl and re) don't explicitly toggle // CS between reads (or does setting Cfg9346 to 0 count too?), // so we need to enter wait-for-command state here eeprom->mode = Chip9346_enter_command_mode; eeprom->input = 0; eeprom->tick = 0; DEBUG_PRINT(("eeprom: +++ end of read, awaiting next command\n")); #else // original behaviour ++eeprom->address; eeprom->address &= EEPROM_9346_ADDR_MASK; eeprom->output = eeprom->contents[eeprom->address]; eeprom->tick = 0; DEBUG_PRINT(("eeprom: +++ read next address 0x%02x data=0x%04x\n", eeprom->address, eeprom->output)); #endif } break; case Chip9346_data_write: eeprom->input = (eeprom->input << 1) | (bit & 1); if (eeprom->tick == 16) { DEBUG_PRINT(("RTL8139: eeprom write to address 0x%02x data=0x%04x\n", eeprom->address, eeprom->input)); eeprom->contents[eeprom->address] = eeprom->input; eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */ eeprom->tick = 0; eeprom->input = 0; } break; case Chip9346_data_write_all: eeprom->input = (eeprom->input << 1) | (bit & 1); if (eeprom->tick == 16) { int i; for (i = 0; i < EEPROM_9346_SIZE; i++) { eeprom->contents[i] = eeprom->input; } DEBUG_PRINT(("RTL8139: eeprom filled with data=0x%04x\n", eeprom->input)); eeprom->mode = Chip9346_enter_command_mode; eeprom->tick = 0; eeprom->input = 0; } break; default: break; } } static int prom9346_get_wire(RTL8139State *s) { EEprom9346 *eeprom = &s->eeprom; if (!eeprom->eecs) return 0; return eeprom->eedo; } /* FIXME: This should be merged into/replaced by eeprom93xx.c. */ static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi) { EEprom9346 *eeprom = &s->eeprom; uint8_t old_eecs = eeprom->eecs; uint8_t old_eesk = eeprom->eesk; eeprom->eecs = eecs; eeprom->eesk = eesk; eeprom->eedi = eedi; DEBUG_PRINT(("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs, eeprom->eesk, eeprom->eedi, eeprom->eedo)); if (!old_eecs && eecs) { /* Synchronize start */ eeprom->tick = 0; eeprom->input = 0; eeprom->output = 0; eeprom->mode = Chip9346_enter_command_mode; DEBUG_PRINT(("=== eeprom: begin access, enter command mode\n")); } if (!eecs) { DEBUG_PRINT(("=== eeprom: end access\n")); return; } if (!old_eesk && eesk) { /* SK front rules */ prom9346_shift_clock(eeprom); } } static void rtl8139_update_irq(RTL8139State *s) { int isr; isr = (s->IntrStatus & s->IntrMask) & 0xffff; DEBUG_PRINT(("RTL8139: Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus, s->IntrMask)); qemu_set_irq(s->pci_dev->irq[0], (isr != 0)); } #define POLYNOMIAL 0x04c11db6 /* From FreeBSD */ /* XXX: optimize */ static int compute_mcast_idx(const uint8_t *ep) { uint32_t crc; int carry, i, j; uint8_t b; crc = 0xffffffff; for (i = 0; i < 6; i++) { b = *ep++; for (j = 0; j < 8; j++) { carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); crc <<= 1; b >>= 1; if (carry) crc = ((crc ^ POLYNOMIAL) | carry); } } return (crc >> 26); } static int rtl8139_RxWrap(RTL8139State *s) { /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */ return (s->RxConfig & (1 << 7)); } static int rtl8139_receiver_enabled(RTL8139State *s) { return s->bChipCmdState & CmdRxEnb; } static int rtl8139_transmitter_enabled(RTL8139State *s) { return s->bChipCmdState & CmdTxEnb; } static int rtl8139_cp_receiver_enabled(RTL8139State *s) { return s->CpCmd & CPlusRxEnb; } static int rtl8139_cp_transmitter_enabled(RTL8139State *s) { return s->CpCmd & CPlusTxEnb; } static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size) { if (s->RxBufAddr + size > s->RxBufferSize) { int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize); /* write packet data */ if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s))) { DEBUG_PRINT((">>> RTL8139: rx packet wrapped in buffer at %d\n", size-wrapped)); if (size > wrapped) { cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size-wrapped ); } /* reset buffer pointer */ s->RxBufAddr = 0; cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf + (size-wrapped), wrapped ); s->RxBufAddr = wrapped; return; } } /* non-wrapping path or overwrapping enabled */ cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size ); s->RxBufAddr += size; } #define MIN_BUF_SIZE 60 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high) { #if TARGET_PHYS_ADDR_BITS > 32 return low | ((target_phys_addr_t)high << 32); #else return low; #endif } static int rtl8139_can_receive(void *opaque) { RTL8139State *s = opaque; int avail; /* Receive (drop) packets if card is disabled. */ if (!s->clock_enabled) return 1; if (!rtl8139_receiver_enabled(s)) return 1; if (rtl8139_cp_receiver_enabled(s)) { /* ??? Flow control not implemented in c+ mode. This is a hack to work around slirp deficiencies anyway. */ return 1; } else { avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize); return (avail == 0 || avail >= 1514); } } static void rtl8139_do_receive(void *opaque, const uint8_t *buf, int size, int do_interrupt) { RTL8139State *s = opaque; uint32_t packet_header = 0; uint8_t buf1[60]; static const uint8_t broadcast_macaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; DEBUG_PRINT((">>> RTL8139: received len=%d\n", size)); /* test if board clock is stopped */ if (!s->clock_enabled) { DEBUG_PRINT(("RTL8139: stopped ==========================\n")); return; } /* first check if receiver is enabled */ if (!rtl8139_receiver_enabled(s)) { DEBUG_PRINT(("RTL8139: receiver disabled ================\n")); return; } /* XXX: check this */ if (s->RxConfig & AcceptAllPhys) { /* promiscuous: receive all */ DEBUG_PRINT((">>> RTL8139: packet received in promiscuous mode\n")); } else { if (!memcmp(buf, broadcast_macaddr, 6)) { /* broadcast address */ if (!(s->RxConfig & AcceptBroadcast)) { DEBUG_PRINT((">>> RTL8139: broadcast packet rejected\n")); /* update tally counter */ ++s->tally_counters.RxERR; return; } packet_header |= RxBroadcast; DEBUG_PRINT((">>> RTL8139: broadcast packet received\n")); /* update tally counter */ ++s->tally_counters.RxOkBrd; } else if (buf[0] & 0x01) { /* multicast */ if (!(s->RxConfig & AcceptMulticast)) { DEBUG_PRINT((">>> RTL8139: multicast packet rejected\n")); /* update tally counter */ ++s->tally_counters.RxERR; return; } int mcast_idx = compute_mcast_idx(buf); if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) { DEBUG_PRINT((">>> RTL8139: multicast address mismatch\n")); /* update tally counter */ ++s->tally_counters.RxERR; return; } packet_header |= RxMulticast; DEBUG_PRINT((">>> RTL8139: multicast packet received\n")); /* update tally counter */ ++s->tally_counters.RxOkMul; } else if (s->phys[0] == buf[0] && s->phys[1] == buf[1] && s->phys[2] == buf[2] && s->phys[3] == buf[3] && s->phys[4] == buf[4] && s->phys[5] == buf[5]) { /* match */ if (!(s->RxConfig & AcceptMyPhys)) { DEBUG_PRINT((">>> RTL8139: rejecting physical address matching packet\n")); /* update tally counter */ ++s->tally_counters.RxERR; return; } packet_header |= RxPhysical; DEBUG_PRINT((">>> RTL8139: physical address matching packet received\n")); /* update tally counter */ ++s->tally_counters.RxOkPhy; } else { DEBUG_PRINT((">>> RTL8139: unknown packet\n")); /* update tally counter */ ++s->tally_counters.RxERR; return; } } /* if too small buffer, then expand it */ if (size < MIN_BUF_SIZE) { memcpy(buf1, buf, size); memset(buf1 + size, 0, MIN_BUF_SIZE - size); buf = buf1; size = MIN_BUF_SIZE; } if (rtl8139_cp_receiver_enabled(s)) { DEBUG_PRINT(("RTL8139: in C+ Rx mode ================\n")); /* begin C+ receiver mode */ /* w0 ownership flag */ #define CP_RX_OWN (1<<31) /* w0 end of ring flag */ #define CP_RX_EOR (1<<30) /* w0 bits 0...12 : buffer size */ #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1) /* w1 tag available flag */ #define CP_RX_TAVA (1<<16) /* w1 bits 0...15 : VLAN tag */ #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1) /* w2 low 32bit of Rx buffer ptr */ /* w3 high 32bit of Rx buffer ptr */ int descriptor = s->currCPlusRxDesc; target_phys_addr_t cplus_rx_ring_desc; cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI); cplus_rx_ring_desc += 16 * descriptor; DEBUG_PRINT(("RTL8139: +++ C+ mode reading RX descriptor %d from host memory at %08x %08x = %016" PRIx64 "\n", descriptor, s->RxRingAddrHI, s->RxRingAddrLO, (uint64_t)cplus_rx_ring_desc)); uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI; cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4); rxdw0 = le32_to_cpu(val); cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4); rxdw1 = le32_to_cpu(val); cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4); rxbufLO = le32_to_cpu(val); cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4); rxbufHI = le32_to_cpu(val); DEBUG_PRINT(("RTL8139: +++ C+ mode RX descriptor %d %08x %08x %08x %08x\n", descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI)); if (!(rxdw0 & CP_RX_OWN)) { DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d is owned by host\n", descriptor)); s->IntrStatus |= RxOverflow; ++s->RxMissed; /* update tally counter */ ++s->tally_counters.RxERR; ++s->tally_counters.MissPkt; rtl8139_update_irq(s); return; } uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK; /* TODO: scatter the packet over available receive ring descriptors space */ if (size+4 > rx_space) { DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d size %d received %d + 4\n", descriptor, rx_space, size)); s->IntrStatus |= RxOverflow; ++s->RxMissed; /* update tally counter */ ++s->tally_counters.RxERR; ++s->tally_counters.MissPkt; rtl8139_update_irq(s); return; } target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI); /* receive/copy to target memory */ cpu_physical_memory_write( rx_addr, buf, size ); if (s->CpCmd & CPlusRxChkSum) { /* do some packet checksumming */ } /* write checksum */ #if defined (RTL8139_CALCULATE_RXCRC) val = cpu_to_le32(crc32(0, buf, size)); #else val = 0; #endif cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4); /* first segment of received packet flag */ #define CP_RX_STATUS_FS (1<<29) /* last segment of received packet flag */ #define CP_RX_STATUS_LS (1<<28) /* multicast packet flag */ #define CP_RX_STATUS_MAR (1<<26) /* physical-matching packet flag */ #define CP_RX_STATUS_PAM (1<<25) /* broadcast packet flag */ #define CP_RX_STATUS_BAR (1<<24) /* runt packet flag */ #define CP_RX_STATUS_RUNT (1<<19) /* crc error flag */ #define CP_RX_STATUS_CRC (1<<18) /* IP checksum error flag */ #define CP_RX_STATUS_IPF (1<<15) /* UDP checksum error flag */ #define CP_RX_STATUS_UDPF (1<<14) /* TCP checksum error flag */ #define CP_RX_STATUS_TCPF (1<<13) /* transfer ownership to target */ rxdw0 &= ~CP_RX_OWN; /* set first segment bit */ rxdw0 |= CP_RX_STATUS_FS; /* set last segment bit */ rxdw0 |= CP_RX_STATUS_LS; /* set received packet type flags */ if (packet_header & RxBroadcast) rxdw0 |= CP_RX_STATUS_BAR; if (packet_header & RxMulticast) rxdw0 |= CP_RX_STATUS_MAR; if (packet_header & RxPhysical) rxdw0 |= CP_RX_STATUS_PAM; /* set received size */ rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK; rxdw0 |= (size+4); /* reset VLAN tag flag */ rxdw1 &= ~CP_RX_TAVA; /* update ring data */ val = cpu_to_le32(rxdw0); cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4); val = cpu_to_le32(rxdw1); cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4); /* update tally counter */ ++s->tally_counters.RxOk; /* seek to next Rx descriptor */ if (rxdw0 & CP_RX_EOR) { s->currCPlusRxDesc = 0; } else { ++s->currCPlusRxDesc; } DEBUG_PRINT(("RTL8139: done C+ Rx mode ----------------\n")); } else { DEBUG_PRINT(("RTL8139: in ring Rx mode ================\n")); /* begin ring receiver mode */ int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize); /* if receiver buffer is empty then avail == 0 */ if (avail != 0 && size + 8 >= avail) { DEBUG_PRINT(("rx overflow: rx buffer length %d head 0x%04x read 0x%04x === available 0x%04x need 0x%04x\n", s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8)); s->IntrStatus |= RxOverflow; ++s->RxMissed; rtl8139_update_irq(s); return; } packet_header |= RxStatusOK; packet_header |= (((size+4) << 16) & 0xffff0000); /* write header */ uint32_t val = cpu_to_le32(packet_header); rtl8139_write_buffer(s, (uint8_t *)&val, 4); rtl8139_write_buffer(s, buf, size); /* write checksum */ #if defined (RTL8139_CALCULATE_RXCRC) val = cpu_to_le32(crc32(0, buf, size)); #else val = 0; #endif rtl8139_write_buffer(s, (uint8_t *)&val, 4); /* correct buffer write pointer */ s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize); /* now we can signal we have received something */ DEBUG_PRINT((" received: rx buffer length %d head 0x%04x read 0x%04x\n", s->RxBufferSize, s->RxBufAddr, s->RxBufPtr)); } s->IntrStatus |= RxOK; if (do_interrupt) { rtl8139_update_irq(s); } } static void rtl8139_receive(void *opaque, const uint8_t *buf, int size) { rtl8139_do_receive(opaque, buf, size, 1); } static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize) { s->RxBufferSize = bufferSize; s->RxBufPtr = 0; s->RxBufAddr = 0; } static void rtl8139_reset(RTL8139State *s) { int i; /* restore MAC address */ memcpy(s->phys, s->macaddr, 6); /* reset interrupt mask */ s->IntrStatus = 0; s->IntrMask = 0; rtl8139_update_irq(s); /* prepare eeprom */ s->eeprom.contents[0] = 0x8129; #if 1 // PCI vendor and device ID should be mirrored here s->eeprom.contents[1] = 0x10ec; s->eeprom.contents[2] = 0x8139; #endif s->eeprom.contents[7] = s->macaddr[0] | s->macaddr[1] << 8; s->eeprom.contents[8] = s->macaddr[2] | s->macaddr[3] << 8; s->eeprom.contents[9] = s->macaddr[4] | s->macaddr[5] << 8; /* mark all status registers as owned by host */ for (i = 0; i < 4; ++i) { s->TxStatus[i] = TxHostOwns; } s->currTxDesc = 0; s->currCPlusRxDesc = 0; s->currCPlusTxDesc = 0; s->RxRingAddrLO = 0; s->RxRingAddrHI = 0; s->RxBuf = 0; rtl8139_reset_rxring(s, 8192); /* ACK the reset */ s->TxConfig = 0; #if 0 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk s->clock_enabled = 0; #else s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake s->clock_enabled = 1; #endif s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */; /* set initial state data */ s->Config0 = 0x0; /* No boot ROM */ s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */ s->Config3 = 0x1; /* fast back-to-back compatible */ s->Config5 = 0x0; s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD; s->CpCmd = 0x0; /* reset C+ mode */ // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex s->BasicModeCtrl = 0x1000; // autonegotiation s->BasicModeStatus = 0x7809; //s->BasicModeStatus |= 0x0040; /* UTP medium */ s->BasicModeStatus |= 0x0020; /* autonegotiation completed */ s->BasicModeStatus |= 0x0004; /* link is up */ s->NWayAdvert = 0x05e1; /* all modes, full duplex */ s->NWayLPAR = 0x05e1; /* all modes, full duplex */ s->NWayExpansion = 0x0001; /* autonegotiation supported */ /* also reset timer and disable timer interrupt */ s->TCTR = 0; s->TimerInt = 0; s->TCTR_base = 0; /* reset tally counters */ RTL8139TallyCounters_clear(&s->tally_counters); } static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters) { counters->TxOk = 0; counters->RxOk = 0; counters->TxERR = 0; counters->RxERR = 0; counters->MissPkt = 0; counters->FAE = 0; counters->Tx1Col = 0; counters->TxMCol = 0; counters->RxOkPhy = 0; counters->RxOkBrd = 0; counters->RxOkMul = 0; counters->TxAbt = 0; counters->TxUndrn = 0; } static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters) { uint16_t val16; uint32_t val32; uint64_t val64; val64 = cpu_to_le64(tally_counters->TxOk); cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8); val64 = cpu_to_le64(tally_counters->RxOk); cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8); val64 = cpu_to_le64(tally_counters->TxERR); cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8); val32 = cpu_to_le32(tally_counters->RxERR); cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4); val16 = cpu_to_le16(tally_counters->MissPkt); cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2); val16 = cpu_to_le16(tally_counters->FAE); cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2); val32 = cpu_to_le32(tally_counters->Tx1Col); cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4); val32 = cpu_to_le32(tally_counters->TxMCol); cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4); val64 = cpu_to_le64(tally_counters->RxOkPhy); cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8); val64 = cpu_to_le64(tally_counters->RxOkBrd); cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8); val32 = cpu_to_le32(tally_counters->RxOkMul); cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4); val16 = cpu_to_le16(tally_counters->TxAbt); cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2); val16 = cpu_to_le16(tally_counters->TxUndrn); cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2); } /* Loads values of tally counters from VM state file */ static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters) { qemu_get_be64s(f, &tally_counters->TxOk); qemu_get_be64s(f, &tally_counters->RxOk); qemu_get_be64s(f, &tally_counters->TxERR); qemu_get_be32s(f, &tally_counters->RxERR); qemu_get_be16s(f, &tally_counters->MissPkt); qemu_get_be16s(f, &tally_counters->FAE); qemu_get_be32s(f, &tally_counters->Tx1Col); qemu_get_be32s(f, &tally_counters->TxMCol); qemu_get_be64s(f, &tally_counters->RxOkPhy); qemu_get_be64s(f, &tally_counters->RxOkBrd); qemu_get_be32s(f, &tally_counters->RxOkMul); qemu_get_be16s(f, &tally_counters->TxAbt); qemu_get_be16s(f, &tally_counters->TxUndrn); } /* Saves values of tally counters to VM state file */ static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters) { qemu_put_be64s(f, &tally_counters->TxOk); qemu_put_be64s(f, &tally_counters->RxOk); qemu_put_be64s(f, &tally_counters->TxERR); qemu_put_be32s(f, &tally_counters->RxERR); qemu_put_be16s(f, &tally_counters->MissPkt); qemu_put_be16s(f, &tally_counters->FAE); qemu_put_be32s(f, &tally_counters->Tx1Col); qemu_put_be32s(f, &tally_counters->TxMCol); qemu_put_be64s(f, &tally_counters->RxOkPhy); qemu_put_be64s(f, &tally_counters->RxOkBrd); qemu_put_be32s(f, &tally_counters->RxOkMul); qemu_put_be16s(f, &tally_counters->TxAbt); qemu_put_be16s(f, &tally_counters->TxUndrn); } static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: ChipCmd write val=0x%08x\n", val)); if (val & CmdReset) { DEBUG_PRINT(("RTL8139: ChipCmd reset\n")); rtl8139_reset(s); } if (val & CmdRxEnb) { DEBUG_PRINT(("RTL8139: ChipCmd enable receiver\n")); s->currCPlusRxDesc = 0; } if (val & CmdTxEnb) { DEBUG_PRINT(("RTL8139: ChipCmd enable transmitter\n")); s->currCPlusTxDesc = 0; } /* mask unwriteable bits */ val = SET_MASKED(val, 0xe3, s->bChipCmdState); /* Deassert reset pin before next read */ val &= ~CmdReset; s->bChipCmdState = val; } static int rtl8139_RxBufferEmpty(RTL8139State *s) { int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize); if (unread != 0) { DEBUG_PRINT(("RTL8139: receiver buffer data available 0x%04x\n", unread)); return 0; } DEBUG_PRINT(("RTL8139: receiver buffer is empty\n")); return 1; } static uint32_t rtl8139_ChipCmd_read(RTL8139State *s) { uint32_t ret = s->bChipCmdState; if (rtl8139_RxBufferEmpty(s)) ret |= RxBufEmpty; DEBUG_PRINT(("RTL8139: ChipCmd read val=0x%04x\n", ret)); return ret; } static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val) { val &= 0xffff; DEBUG_PRINT(("RTL8139C+ command register write(w) val=0x%04x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0xff84, s->CpCmd); s->CpCmd = val; } static uint32_t rtl8139_CpCmd_read(RTL8139State *s) { uint32_t ret = s->CpCmd; DEBUG_PRINT(("RTL8139C+ command register read(w) val=0x%04x\n", ret)); return ret; } static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139C+ IntrMitigate register write(w) val=0x%04x\n", val)); } static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s) { uint32_t ret = 0; DEBUG_PRINT(("RTL8139C+ IntrMitigate register read(w) val=0x%04x\n", ret)); return ret; } static int rtl8139_config_writeable(RTL8139State *s) { if (s->Cfg9346 & Cfg9346_Unlock) { return 1; } DEBUG_PRINT(("RTL8139: Configuration registers are write-protected\n")); return 0; } static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val) { val &= 0xffff; DEBUG_PRINT(("RTL8139: BasicModeCtrl register write(w) val=0x%04x\n", val)); /* mask unwriteable bits */ uint32_t mask = 0x4cff; if (1 || !rtl8139_config_writeable(s)) { /* Speed setting and autonegotiation enable bits are read-only */ mask |= 0x3000; /* Duplex mode setting is read-only */ mask |= 0x0100; } val = SET_MASKED(val, mask, s->BasicModeCtrl); s->BasicModeCtrl = val; } static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s) { uint32_t ret = s->BasicModeCtrl; DEBUG_PRINT(("RTL8139: BasicModeCtrl register read(w) val=0x%04x\n", ret)); return ret; } static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val) { val &= 0xffff; DEBUG_PRINT(("RTL8139: BasicModeStatus register write(w) val=0x%04x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0xff3f, s->BasicModeStatus); s->BasicModeStatus = val; } static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s) { uint32_t ret = s->BasicModeStatus; DEBUG_PRINT(("RTL8139: BasicModeStatus register read(w) val=0x%04x\n", ret)); return ret; } static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Cfg9346 write val=0x%02x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0x31, s->Cfg9346); uint32_t opmode = val & 0xc0; uint32_t eeprom_val = val & 0xf; if (opmode == 0x80) { /* eeprom access */ int eecs = (eeprom_val & 0x08)?1:0; int eesk = (eeprom_val & 0x04)?1:0; int eedi = (eeprom_val & 0x02)?1:0; prom9346_set_wire(s, eecs, eesk, eedi); } else if (opmode == 0x40) { /* Reset. */ val = 0; rtl8139_reset(s); } s->Cfg9346 = val; } static uint32_t rtl8139_Cfg9346_read(RTL8139State *s) { uint32_t ret = s->Cfg9346; uint32_t opmode = ret & 0xc0; if (opmode == 0x80) { /* eeprom access */ int eedo = prom9346_get_wire(s); if (eedo) { ret |= 0x01; } else { ret &= ~0x01; } } DEBUG_PRINT(("RTL8139: Cfg9346 read val=0x%02x\n", ret)); return ret; } static void rtl8139_Config0_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Config0 write val=0x%02x\n", val)); if (!rtl8139_config_writeable(s)) return; /* mask unwriteable bits */ val = SET_MASKED(val, 0xf8, s->Config0); s->Config0 = val; } static uint32_t rtl8139_Config0_read(RTL8139State *s) { uint32_t ret = s->Config0; DEBUG_PRINT(("RTL8139: Config0 read val=0x%02x\n", ret)); return ret; } static void rtl8139_Config1_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Config1 write val=0x%02x\n", val)); if (!rtl8139_config_writeable(s)) return; /* mask unwriteable bits */ val = SET_MASKED(val, 0xC, s->Config1); s->Config1 = val; } static uint32_t rtl8139_Config1_read(RTL8139State *s) { uint32_t ret = s->Config1; DEBUG_PRINT(("RTL8139: Config1 read val=0x%02x\n", ret)); return ret; } static void rtl8139_Config3_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Config3 write val=0x%02x\n", val)); if (!rtl8139_config_writeable(s)) return; /* mask unwriteable bits */ val = SET_MASKED(val, 0x8F, s->Config3); s->Config3 = val; } static uint32_t rtl8139_Config3_read(RTL8139State *s) { uint32_t ret = s->Config3; DEBUG_PRINT(("RTL8139: Config3 read val=0x%02x\n", ret)); return ret; } static void rtl8139_Config4_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Config4 write val=0x%02x\n", val)); if (!rtl8139_config_writeable(s)) return; /* mask unwriteable bits */ val = SET_MASKED(val, 0x0a, s->Config4); s->Config4 = val; } static uint32_t rtl8139_Config4_read(RTL8139State *s) { uint32_t ret = s->Config4; DEBUG_PRINT(("RTL8139: Config4 read val=0x%02x\n", ret)); return ret; } static void rtl8139_Config5_write(RTL8139State *s, uint32_t val) { val &= 0xff; DEBUG_PRINT(("RTL8139: Config5 write val=0x%02x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0x80, s->Config5); s->Config5 = val; } static uint32_t rtl8139_Config5_read(RTL8139State *s) { uint32_t ret = s->Config5; DEBUG_PRINT(("RTL8139: Config5 read val=0x%02x\n", ret)); return ret; } static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val) { if (!rtl8139_transmitter_enabled(s)) { DEBUG_PRINT(("RTL8139: transmitter disabled; no TxConfig write val=0x%08x\n", val)); return; } DEBUG_PRINT(("RTL8139: TxConfig write val=0x%08x\n", val)); val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig); s->TxConfig = val; } static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139C TxConfig via write(b) val=0x%02x\n", val)); uint32_t tc = s->TxConfig; tc &= 0xFFFFFF00; tc |= (val & 0x000000FF); rtl8139_TxConfig_write(s, tc); } static uint32_t rtl8139_TxConfig_read(RTL8139State *s) { uint32_t ret = s->TxConfig; DEBUG_PRINT(("RTL8139: TxConfig read val=0x%04x\n", ret)); return ret; } static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: RxConfig write val=0x%08x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0xf0fc0040, s->RxConfig); s->RxConfig = val; /* reset buffer size and read/write pointers */ rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3)); DEBUG_PRINT(("RTL8139: RxConfig write reset buffer size to %d\n", s->RxBufferSize)); } static uint32_t rtl8139_RxConfig_read(RTL8139State *s) { uint32_t ret = s->RxConfig; DEBUG_PRINT(("RTL8139: RxConfig read val=0x%08x\n", ret)); return ret; } static void rtl8139_transfer_frame(RTL8139State *s, const uint8_t *buf, int size, int do_interrupt) { if (!size) { DEBUG_PRINT(("RTL8139: +++ empty ethernet frame\n")); return; } if (TxLoopBack == (s->TxConfig & TxLoopBack)) { DEBUG_PRINT(("RTL8139: +++ transmit loopback mode\n")); rtl8139_do_receive(s, buf, size, do_interrupt); } else { qemu_send_packet(s->vc, buf, size); } } static int rtl8139_transmit_one(RTL8139State *s, int descriptor) { if (!rtl8139_transmitter_enabled(s)) { DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: transmitter disabled\n", descriptor)); return 0; } if (s->TxStatus[descriptor] & TxHostOwns) { DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: owned by host (%08x)\n", descriptor, s->TxStatus[descriptor])); return 0; } DEBUG_PRINT(("RTL8139: +++ transmitting from descriptor %d\n", descriptor)); int txsize = s->TxStatus[descriptor] & 0x1fff; uint8_t txbuffer[0x2000]; DEBUG_PRINT(("RTL8139: +++ transmit reading %d bytes from host memory at 0x%08x\n", txsize, s->TxAddr[descriptor])); cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize); /* Mark descriptor as transferred */ s->TxStatus[descriptor] |= TxHostOwns; s->TxStatus[descriptor] |= TxStatOK; rtl8139_transfer_frame(s, txbuffer, txsize, 0); DEBUG_PRINT(("RTL8139: +++ transmitted %d bytes from descriptor %d\n", txsize, descriptor)); /* update interrupt */ s->IntrStatus |= TxOK; rtl8139_update_irq(s); return 1; } /* structures and macros for task offloading */ typedef struct ip_header { uint8_t ip_ver_len; /* version and header length */ uint8_t ip_tos; /* type of service */ uint16_t ip_len; /* total length */ uint16_t ip_id; /* identification */ uint16_t ip_off; /* fragment offset field */ uint8_t ip_ttl; /* time to live */ uint8_t ip_p; /* protocol */ uint16_t ip_sum; /* checksum */ uint32_t ip_src,ip_dst; /* source and dest address */ } ip_header; #define IP_HEADER_VERSION_4 4 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf) #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2) typedef struct tcp_header { uint16_t th_sport; /* source port */ uint16_t th_dport; /* destination port */ uint32_t th_seq; /* sequence number */ uint32_t th_ack; /* acknowledgement number */ uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */ uint16_t th_win; /* window */ uint16_t th_sum; /* checksum */ uint16_t th_urp; /* urgent pointer */ } tcp_header; typedef struct udp_header { uint16_t uh_sport; /* source port */ uint16_t uh_dport; /* destination port */ uint16_t uh_ulen; /* udp length */ uint16_t uh_sum; /* udp checksum */ } udp_header; typedef struct ip_pseudo_header { uint32_t ip_src; uint32_t ip_dst; uint8_t zeros; uint8_t ip_proto; uint16_t ip_payload; } ip_pseudo_header; #define IP_PROTO_TCP 6 #define IP_PROTO_UDP 17 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2) #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f) #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags)) #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off))) #define TCP_FLAG_FIN 0x01 #define TCP_FLAG_PUSH 0x08 /* produces ones' complement sum of data */ static uint16_t ones_complement_sum(uint8_t *data, size_t len) { uint32_t result = 0; for (; len > 1; data+=2, len-=2) { result += *(uint16_t*)data; } /* add the remainder byte */ if (len) { uint8_t odd[2] = {*data, 0}; result += *(uint16_t*)odd; } while (result>>16) result = (result & 0xffff) + (result >> 16); return result; } static uint16_t ip_checksum(void *data, size_t len) { return ~ones_complement_sum((uint8_t*)data, len); } static int rtl8139_cplus_transmit_one(RTL8139State *s) { if (!rtl8139_transmitter_enabled(s)) { DEBUG_PRINT(("RTL8139: +++ C+ mode: transmitter disabled\n")); return 0; } if (!rtl8139_cp_transmitter_enabled(s)) { DEBUG_PRINT(("RTL8139: +++ C+ mode: C+ transmitter disabled\n")); return 0 ; } int descriptor = s->currCPlusTxDesc; target_phys_addr_t cplus_tx_ring_desc = rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]); /* Normal priority ring */ cplus_tx_ring_desc += 16 * descriptor; DEBUG_PRINT(("RTL8139: +++ C+ mode reading TX descriptor %d from host memory at %08x0x%08x = 0x%8lx\n", descriptor, s->TxAddr[1], s->TxAddr[0], cplus_tx_ring_desc)); uint32_t val, txdw0,txdw1,txbufLO,txbufHI; cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4); txdw0 = le32_to_cpu(val); cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4); txdw1 = le32_to_cpu(val); cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4); txbufLO = le32_to_cpu(val); cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4); txbufHI = le32_to_cpu(val); DEBUG_PRINT(("RTL8139: +++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor, txdw0, txdw1, txbufLO, txbufHI)); /* w0 ownership flag */ #define CP_TX_OWN (1<<31) /* w0 end of ring flag */ #define CP_TX_EOR (1<<30) /* first segment of received packet flag */ #define CP_TX_FS (1<<29) /* last segment of received packet flag */ #define CP_TX_LS (1<<28) /* large send packet flag */ #define CP_TX_LGSEN (1<<27) /* large send MSS mask, bits 16...25 */ #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1) /* IP checksum offload flag */ #define CP_TX_IPCS (1<<18) /* UDP checksum offload flag */ #define CP_TX_UDPCS (1<<17) /* TCP checksum offload flag */ #define CP_TX_TCPCS (1<<16) /* w0 bits 0...15 : buffer size */ #define CP_TX_BUFFER_SIZE (1<<16) #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1) /* w1 tag available flag */ #define CP_RX_TAGC (1<<17) /* w1 bits 0...15 : VLAN tag */ #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1) /* w2 low 32bit of Rx buffer ptr */ /* w3 high 32bit of Rx buffer ptr */ /* set after transmission */ /* FIFO underrun flag */ #define CP_TX_STATUS_UNF (1<<25) /* transmit error summary flag, valid if set any of three below */ #define CP_TX_STATUS_TES (1<<23) /* out-of-window collision flag */ #define CP_TX_STATUS_OWC (1<<22) /* link failure flag */ #define CP_TX_STATUS_LNKF (1<<21) /* excessive collisions flag */ #define CP_TX_STATUS_EXC (1<<20) if (!(txdw0 & CP_TX_OWN)) { DEBUG_PRINT(("RTL8139: C+ Tx mode : descriptor %d is owned by host\n", descriptor)); return 0 ; } DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : transmitting from descriptor %d\n", descriptor)); if (txdw0 & CP_TX_FS) { DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is first segment descriptor\n", descriptor)); /* reset internal buffer offset */ s->cplus_txbuffer_offset = 0; } int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK; target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI); /* make sure we have enough space to assemble the packet */ if (!s->cplus_txbuffer) { s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE; s->cplus_txbuffer = malloc(s->cplus_txbuffer_len); s->cplus_txbuffer_offset = 0; DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer allocated space %d\n", s->cplus_txbuffer_len)); } while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len) { s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE; s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len); DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer space changed to %d\n", s->cplus_txbuffer_len)); } if (!s->cplus_txbuffer) { /* out of memory */ DEBUG_PRINT(("RTL8139: +++ C+ mode transmiter failed to reallocate %d bytes\n", s->cplus_txbuffer_len)); /* update tally counter */ ++s->tally_counters.TxERR; ++s->tally_counters.TxAbt; return 0; } /* append more data to the packet */ DEBUG_PRINT(("RTL8139: +++ C+ mode transmit reading %d bytes from host memory at %016" PRIx64 " to offset %d\n", txsize, (uint64_t)tx_addr, s->cplus_txbuffer_offset)); cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize); s->cplus_txbuffer_offset += txsize; /* seek to next Rx descriptor */ if (txdw0 & CP_TX_EOR) { s->currCPlusTxDesc = 0; } else { ++s->currCPlusTxDesc; if (s->currCPlusTxDesc >= 64) s->currCPlusTxDesc = 0; } /* transfer ownership to target */ txdw0 &= ~CP_RX_OWN; /* reset error indicator bits */ txdw0 &= ~CP_TX_STATUS_UNF; txdw0 &= ~CP_TX_STATUS_TES; txdw0 &= ~CP_TX_STATUS_OWC; txdw0 &= ~CP_TX_STATUS_LNKF; txdw0 &= ~CP_TX_STATUS_EXC; /* update ring data */ val = cpu_to_le32(txdw0); cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4); // val = cpu_to_le32(txdw1); // cpu_physical_memory_write(cplus_tx_ring_desc+4, &val, 4); /* Now decide if descriptor being processed is holding the last segment of packet */ if (txdw0 & CP_TX_LS) { DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is last segment descriptor\n", descriptor)); /* can transfer fully assembled packet */ uint8_t *saved_buffer = s->cplus_txbuffer; int saved_size = s->cplus_txbuffer_offset; int saved_buffer_len = s->cplus_txbuffer_len; /* reset the card space to protect from recursive call */ s->cplus_txbuffer = NULL; s->cplus_txbuffer_offset = 0; s->cplus_txbuffer_len = 0; if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN)) { DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task checksum\n")); #define ETH_P_IP 0x0800 /* Internet Protocol packet */ #define ETH_HLEN 14 #define ETH_MTU 1500 /* ip packet header */ ip_header *ip = 0; int hlen = 0; uint8_t ip_protocol = 0; uint16_t ip_data_len = 0; uint8_t *eth_payload_data = 0; size_t eth_payload_len = 0; int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12)); if (proto == ETH_P_IP) { DEBUG_PRINT(("RTL8139: +++ C+ mode has IP packet\n")); /* not aligned */ eth_payload_data = saved_buffer + ETH_HLEN; eth_payload_len = saved_size - ETH_HLEN; ip = (ip_header*)eth_payload_data; if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) { DEBUG_PRINT(("RTL8139: +++ C+ mode packet has bad IP version %d expected %d\n", IP_HEADER_VERSION(ip), IP_HEADER_VERSION_4)); ip = NULL; } else { hlen = IP_HEADER_LENGTH(ip); ip_protocol = ip->ip_p; ip_data_len = be16_to_cpu(ip->ip_len) - hlen; } } if (ip) { if (txdw0 & CP_TX_IPCS) { DEBUG_PRINT(("RTL8139: +++ C+ mode need IP checksum\n")); if (hleneth_payload_len) {/* min header length */ /* bad packet header len */ /* or packet too short */ } else { ip->ip_sum = 0; ip->ip_sum = ip_checksum(ip, hlen); DEBUG_PRINT(("RTL8139: +++ C+ mode IP header len=%d checksum=%04x\n", hlen, ip->ip_sum)); } } if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP) { #if defined (DEBUG_RTL8139) int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK; #endif DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task TSO MTU=%d IP data %d frame data %d specified MSS=%d\n", ETH_MTU, ip_data_len, saved_size - ETH_HLEN, large_send_mss)); int tcp_send_offset = 0; int send_count = 0; /* maximum IP header length is 60 bytes */ uint8_t saved_ip_header[60]; /* save IP header template; data area is used in tcp checksum calculation */ memcpy(saved_ip_header, eth_payload_data, hlen); /* a placeholder for checksum calculation routine in tcp case */ uint8_t *data_to_checksum = eth_payload_data + hlen - 12; // size_t data_to_checksum_len = eth_payload_len - hlen + 12; /* pointer to TCP header */ tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen); int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr); /* ETH_MTU = ip header len + tcp header len + payload */ int tcp_data_len = ip_data_len - tcp_hlen; int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen; DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP data len %d TCP hlen %d TCP data len %d TCP chunk size %d\n", ip_data_len, tcp_hlen, tcp_data_len, tcp_chunk_size)); /* note the cycle below overwrites IP header data, but restores it from saved_ip_header before sending packet */ int is_last_frame = 0; for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size) { uint16_t chunk_size = tcp_chunk_size; /* check if this is the last frame */ if (tcp_send_offset + tcp_chunk_size >= tcp_data_len) { is_last_frame = 1; chunk_size = tcp_data_len - tcp_send_offset; } DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP seqno %08x\n", be32_to_cpu(p_tcp_hdr->th_seq))); /* add 4 TCP pseudoheader fields */ /* copy IP source and destination fields */ memcpy(data_to_checksum, saved_ip_header + 12, 8); DEBUG_PRINT(("RTL8139: +++ C+ mode TSO calculating TCP checksum for packet with %d bytes data\n", tcp_hlen + chunk_size)); if (tcp_send_offset) { memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size); } /* keep PUSH and FIN flags only for the last frame */ if (!is_last_frame) { TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN); } /* recalculate TCP checksum */ ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum; p_tcpip_hdr->zeros = 0; p_tcpip_hdr->ip_proto = IP_PROTO_TCP; p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size); p_tcp_hdr->th_sum = 0; int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12); DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP checksum %04x\n", tcp_checksum)); p_tcp_hdr->th_sum = tcp_checksum; /* restore IP header */ memcpy(eth_payload_data, saved_ip_header, hlen); /* set IP data length and recalculate IP checksum */ ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size); /* increment IP id for subsequent frames */ ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id)); ip->ip_sum = 0; ip->ip_sum = ip_checksum(eth_payload_data, hlen); DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP header len=%d checksum=%04x\n", hlen, ip->ip_sum)); int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size; DEBUG_PRINT(("RTL8139: +++ C+ mode TSO transferring packet size %d\n", tso_send_size)); rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 0); /* add transferred count to TCP sequence number */ p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq)); ++send_count; } /* Stop sending this frame */ saved_size = 0; } else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS)) { DEBUG_PRINT(("RTL8139: +++ C+ mode need TCP or UDP checksum\n")); /* maximum IP header length is 60 bytes */ uint8_t saved_ip_header[60]; memcpy(saved_ip_header, eth_payload_data, hlen); uint8_t *data_to_checksum = eth_payload_data + hlen - 12; // size_t data_to_checksum_len = eth_payload_len - hlen + 12; /* add 4 TCP pseudoheader fields */ /* copy IP source and destination fields */ memcpy(data_to_checksum, saved_ip_header + 12, 8); if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP) { DEBUG_PRINT(("RTL8139: +++ C+ mode calculating TCP checksum for packet with %d bytes data\n", ip_data_len)); ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum; p_tcpip_hdr->zeros = 0; p_tcpip_hdr->ip_proto = IP_PROTO_TCP; p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len); tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12); p_tcp_hdr->th_sum = 0; int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12); DEBUG_PRINT(("RTL8139: +++ C+ mode TCP checksum %04x\n", tcp_checksum)); p_tcp_hdr->th_sum = tcp_checksum; } else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP) { DEBUG_PRINT(("RTL8139: +++ C+ mode calculating UDP checksum for packet with %d bytes data\n", ip_data_len)); ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum; p_udpip_hdr->zeros = 0; p_udpip_hdr->ip_proto = IP_PROTO_UDP; p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len); udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12); p_udp_hdr->uh_sum = 0; int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12); DEBUG_PRINT(("RTL8139: +++ C+ mode UDP checksum %04x\n", udp_checksum)); p_udp_hdr->uh_sum = udp_checksum; } /* restore IP header */ memcpy(eth_payload_data, saved_ip_header, hlen); } } } /* update tally counter */ ++s->tally_counters.TxOk; DEBUG_PRINT(("RTL8139: +++ C+ mode transmitting %d bytes packet\n", saved_size)); rtl8139_transfer_frame(s, saved_buffer, saved_size, 1); /* restore card space if there was no recursion and reset offset */ if (!s->cplus_txbuffer) { s->cplus_txbuffer = saved_buffer; s->cplus_txbuffer_len = saved_buffer_len; s->cplus_txbuffer_offset = 0; } else { free(saved_buffer); } } else { DEBUG_PRINT(("RTL8139: +++ C+ mode transmission continue to next descriptor\n")); } return 1; } static void rtl8139_cplus_transmit(RTL8139State *s) { int txcount = 0; while (rtl8139_cplus_transmit_one(s)) { ++txcount; } /* Mark transfer completed */ if (!txcount) { DEBUG_PRINT(("RTL8139: C+ mode : transmitter queue stalled, current TxDesc = %d\n", s->currCPlusTxDesc)); } else { /* update interrupt status */ s->IntrStatus |= TxOK; rtl8139_update_irq(s); } } static void rtl8139_transmit(RTL8139State *s) { int descriptor = s->currTxDesc, txcount = 0; /*while*/ if (rtl8139_transmit_one(s, descriptor)) { ++s->currTxDesc; s->currTxDesc %= 4; ++txcount; } /* Mark transfer completed */ if (!txcount) { DEBUG_PRINT(("RTL8139: transmitter queue stalled, current TxDesc = %d\n", s->currTxDesc)); } } static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val) { int descriptor = txRegOffset/4; /* handle C+ transmit mode register configuration */ if (rtl8139_cp_transmitter_enabled(s)) { DEBUG_PRINT(("RTL8139C+ DTCCR write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor)); /* handle Dump Tally Counters command */ s->TxStatus[descriptor] = val; if (descriptor == 0 && (val & 0x8)) { target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]); /* dump tally counters to specified memory location */ RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters); /* mark dump completed */ s->TxStatus[0] &= ~0x8; } return; } DEBUG_PRINT(("RTL8139: TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor)); /* mask only reserved bits */ val &= ~0xff00c000; /* these bits are reset on write */ val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]); s->TxStatus[descriptor] = val; /* attempt to start transmission */ rtl8139_transmit(s); } static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset) { uint32_t ret = s->TxStatus[txRegOffset/4]; DEBUG_PRINT(("RTL8139: TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret)); return ret; } static uint16_t rtl8139_TSAD_read(RTL8139State *s) { uint16_t ret = 0; /* Simulate TSAD, it is read only anyway */ ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0) |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0) |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0) |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0) |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0) |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0) |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0) |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0) |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0) |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0) |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0) |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0) |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0) |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0) |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0) |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ; DEBUG_PRINT(("RTL8139: TSAD read val=0x%04x\n", ret)); return ret; } static uint16_t rtl8139_CSCR_read(RTL8139State *s) { uint16_t ret = s->CSCR; DEBUG_PRINT(("RTL8139: CSCR read val=0x%04x\n", ret)); return ret; } static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val) { DEBUG_PRINT(("RTL8139: TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val)); s->TxAddr[txAddrOffset/4] = val; } static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset) { uint32_t ret = s->TxAddr[txAddrOffset/4]; DEBUG_PRINT(("RTL8139: TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret)); return ret; } static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: RxBufPtr write val=0x%04x\n", val)); /* this value is off by 16 */ s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize); DEBUG_PRINT((" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n", s->RxBufferSize, s->RxBufAddr, s->RxBufPtr)); } static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s) { /* this value is off by 16 */ uint32_t ret = s->RxBufPtr - 0x10; DEBUG_PRINT(("RTL8139: RxBufPtr read val=0x%04x\n", ret)); return ret; } static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s) { /* this value is NOT off by 16 */ uint32_t ret = s->RxBufAddr; DEBUG_PRINT(("RTL8139: RxBufAddr read val=0x%04x\n", ret)); return ret; } static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: RxBuf write val=0x%08x\n", val)); s->RxBuf = val; /* may need to reset rxring here */ } static uint32_t rtl8139_RxBuf_read(RTL8139State *s) { uint32_t ret = s->RxBuf; DEBUG_PRINT(("RTL8139: RxBuf read val=0x%08x\n", ret)); return ret; } static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: IntrMask write(w) val=0x%04x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0x1e00, s->IntrMask); s->IntrMask = val; rtl8139_update_irq(s); } static uint32_t rtl8139_IntrMask_read(RTL8139State *s) { uint32_t ret = s->IntrMask; DEBUG_PRINT(("RTL8139: IntrMask read(w) val=0x%04x\n", ret)); return ret; } static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: IntrStatus write(w) val=0x%04x\n", val)); #if 0 /* writing to ISR has no effect */ return; #else uint16_t newStatus = s->IntrStatus & ~val; /* mask unwriteable bits */ newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus); /* writing 1 to interrupt status register bit clears it */ s->IntrStatus = 0; rtl8139_update_irq(s); s->IntrStatus = newStatus; rtl8139_update_irq(s); #endif } static uint32_t rtl8139_IntrStatus_read(RTL8139State *s) { uint32_t ret = s->IntrStatus; DEBUG_PRINT(("RTL8139: IntrStatus read(w) val=0x%04x\n", ret)); #if 0 /* reading ISR clears all interrupts */ s->IntrStatus = 0; rtl8139_update_irq(s); #endif return ret; } static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val) { DEBUG_PRINT(("RTL8139: MultiIntr write(w) val=0x%04x\n", val)); /* mask unwriteable bits */ val = SET_MASKED(val, 0xf000, s->MultiIntr); s->MultiIntr = val; } static uint32_t rtl8139_MultiIntr_read(RTL8139State *s) { uint32_t ret = s->MultiIntr; DEBUG_PRINT(("RTL8139: MultiIntr read(w) val=0x%04x\n", ret)); return ret; } static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val) { RTL8139State *s = opaque; addr &= 0xff; switch (addr) { case MAC0 ... MAC0+5: s->phys[addr - MAC0] = val; break; case MAC0+6 ... MAC0+7: /* reserved */ break; case MAR0 ... MAR0+7: s->mult[addr - MAR0] = val; break; case ChipCmd: rtl8139_ChipCmd_write(s, val); break; case Cfg9346: rtl8139_Cfg9346_write(s, val); break; case TxConfig: /* windows driver sometimes writes using byte-lenth call */ rtl8139_TxConfig_writeb(s, val); break; case Config0: rtl8139_Config0_write(s, val); break; case Config1: rtl8139_Config1_write(s, val); break; case Config3: rtl8139_Config3_write(s, val); break; case Config4: rtl8139_Config4_write(s, val); break; case Config5: rtl8139_Config5_write(s, val); break; case MediaStatus: /* ignore */ DEBUG_PRINT(("RTL8139: not implemented write(b) to MediaStatus val=0x%02x\n", val)); break; case HltClk: DEBUG_PRINT(("RTL8139: HltClk write val=0x%08x\n", val)); if (val == 'R') { s->clock_enabled = 1; } else if (val == 'H') { s->clock_enabled = 0; } break; case TxThresh: DEBUG_PRINT(("RTL8139C+ TxThresh write(b) val=0x%02x\n", val)); s->TxThresh = val; break; case TxPoll: DEBUG_PRINT(("RTL8139C+ TxPoll write(b) val=0x%02x\n", val)); if (val & (1 << 7)) { DEBUG_PRINT(("RTL8139C+ TxPoll high priority transmission (not implemented)\n")); //rtl8139_cplus_transmit(s); } if (val & (1 << 6)) { DEBUG_PRINT(("RTL8139C+ TxPoll normal priority transmission\n")); rtl8139_cplus_transmit(s); } break; default: DEBUG_PRINT(("RTL8139: not implemented write(b) addr=0x%x val=0x%02x\n", addr, val)); break; } } static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val) { RTL8139State *s = opaque; addr &= 0xfe; switch (addr) { case IntrMask: rtl8139_IntrMask_write(s, val); break; case IntrStatus: rtl8139_IntrStatus_write(s, val); break; case MultiIntr: rtl8139_MultiIntr_write(s, val); break; case RxBufPtr: rtl8139_RxBufPtr_write(s, val); break; case BasicModeCtrl: rtl8139_BasicModeCtrl_write(s, val); break; case BasicModeStatus: rtl8139_BasicModeStatus_write(s, val); break; case NWayAdvert: DEBUG_PRINT(("RTL8139: NWayAdvert write(w) val=0x%04x\n", val)); s->NWayAdvert = val; break; case NWayLPAR: DEBUG_PRINT(("RTL8139: forbidden NWayLPAR write(w) val=0x%04x\n", val)); break; case NWayExpansion: DEBUG_PRINT(("RTL8139: NWayExpansion write(w) val=0x%04x\n", val)); s->NWayExpansion = val; break; case CpCmd: rtl8139_CpCmd_write(s, val); break; case IntrMitigate: rtl8139_IntrMitigate_write(s, val); break; default: DEBUG_PRINT(("RTL8139: ioport write(w) addr=0x%x val=0x%04x via write(b)\n", addr, val)); rtl8139_io_writeb(opaque, addr, val & 0xff); rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff); break; } } static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val) { RTL8139State *s = opaque; addr &= 0xfc; switch (addr) { case RxMissed: DEBUG_PRINT(("RTL8139: RxMissed clearing on write\n")); s->RxMissed = 0; break; case TxConfig: rtl8139_TxConfig_write(s, val); break; case RxConfig: rtl8139_RxConfig_write(s, val); break; case TxStatus0 ... TxStatus0+4*4-1: rtl8139_TxStatus_write(s, addr-TxStatus0, val); break; case TxAddr0 ... TxAddr0+4*4-1: rtl8139_TxAddr_write(s, addr-TxAddr0, val); break; case RxBuf: rtl8139_RxBuf_write(s, val); break; case RxRingAddrLO: DEBUG_PRINT(("RTL8139: C+ RxRing low bits write val=0x%08x\n", val)); s->RxRingAddrLO = val; break; case RxRingAddrHI: DEBUG_PRINT(("RTL8139: C+ RxRing high bits write val=0x%08x\n", val)); s->RxRingAddrHI = val; break; case Timer: DEBUG_PRINT(("RTL8139: TCTR Timer reset on write\n")); s->TCTR = 0; s->TCTR_base = qemu_get_clock(vm_clock); break; case FlashReg: DEBUG_PRINT(("RTL8139: FlashReg TimerInt write val=0x%08x\n", val)); s->TimerInt = val; break; default: DEBUG_PRINT(("RTL8139: ioport write(l) addr=0x%x val=0x%08x via write(b)\n", addr, val)); rtl8139_io_writeb(opaque, addr, val & 0xff); rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff); rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff); rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff); break; } } static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr) { RTL8139State *s = opaque; int ret; addr &= 0xff; switch (addr) { case MAC0 ... MAC0+5: ret = s->phys[addr - MAC0]; break; case MAC0+6 ... MAC0+7: ret = 0; break; case MAR0 ... MAR0+7: ret = s->mult[addr - MAR0]; break; case ChipCmd: ret = rtl8139_ChipCmd_read(s); break; case Cfg9346: ret = rtl8139_Cfg9346_read(s); break; case Config0: ret = rtl8139_Config0_read(s); break; case Config1: ret = rtl8139_Config1_read(s); break; case Config3: ret = rtl8139_Config3_read(s); break; case Config4: ret = rtl8139_Config4_read(s); break; case Config5: ret = rtl8139_Config5_read(s); break; case MediaStatus: ret = 0xd0; DEBUG_PRINT(("RTL8139: MediaStatus read 0x%x\n", ret)); break; case HltClk: ret = s->clock_enabled; DEBUG_PRINT(("RTL8139: HltClk read 0x%x\n", ret)); break; case PCIRevisionID: ret = RTL8139_PCI_REVID; DEBUG_PRINT(("RTL8139: PCI Revision ID read 0x%x\n", ret)); break; case TxThresh: ret = s->TxThresh; DEBUG_PRINT(("RTL8139C+ TxThresh read(b) val=0x%02x\n", ret)); break; case 0x43: /* Part of TxConfig register. Windows driver tries to read it */ ret = s->TxConfig >> 24; DEBUG_PRINT(("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret)); break; default: DEBUG_PRINT(("RTL8139: not implemented read(b) addr=0x%x\n", addr)); ret = 0; break; } return ret; } static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr) { RTL8139State *s = opaque; uint32_t ret; addr &= 0xfe; /* mask lower bit */ switch (addr) { case IntrMask: ret = rtl8139_IntrMask_read(s); break; case IntrStatus: ret = rtl8139_IntrStatus_read(s); break; case MultiIntr: ret = rtl8139_MultiIntr_read(s); break; case RxBufPtr: ret = rtl8139_RxBufPtr_read(s); break; case RxBufAddr: ret = rtl8139_RxBufAddr_read(s); break; case BasicModeCtrl: ret = rtl8139_BasicModeCtrl_read(s); break; case BasicModeStatus: ret = rtl8139_BasicModeStatus_read(s); break; case NWayAdvert: ret = s->NWayAdvert; DEBUG_PRINT(("RTL8139: NWayAdvert read(w) val=0x%04x\n", ret)); break; case NWayLPAR: ret = s->NWayLPAR; DEBUG_PRINT(("RTL8139: NWayLPAR read(w) val=0x%04x\n", ret)); break; case NWayExpansion: ret = s->NWayExpansion; DEBUG_PRINT(("RTL8139: NWayExpansion read(w) val=0x%04x\n", ret)); break; case CpCmd: ret = rtl8139_CpCmd_read(s); break; case IntrMitigate: ret = rtl8139_IntrMitigate_read(s); break; case TxSummary: ret = rtl8139_TSAD_read(s); break; case CSCR: ret = rtl8139_CSCR_read(s); break; default: DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x via read(b)\n", addr)); ret = rtl8139_io_readb(opaque, addr); ret |= rtl8139_io_readb(opaque, addr + 1) << 8; DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x val=0x%04x\n", addr, ret)); break; } return ret; } static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr) { RTL8139State *s = opaque; uint32_t ret; addr &= 0xfc; /* also mask low 2 bits */ switch (addr) { case RxMissed: ret = s->RxMissed; DEBUG_PRINT(("RTL8139: RxMissed read val=0x%08x\n", ret)); break; case TxConfig: ret = rtl8139_TxConfig_read(s); break; case RxConfig: ret = rtl8139_RxConfig_read(s); break; case TxStatus0 ... TxStatus0+4*4-1: ret = rtl8139_TxStatus_read(s, addr-TxStatus0); break; case TxAddr0 ... TxAddr0+4*4-1: ret = rtl8139_TxAddr_read(s, addr-TxAddr0); break; case RxBuf: ret = rtl8139_RxBuf_read(s); break; case RxRingAddrLO: ret = s->RxRingAddrLO; DEBUG_PRINT(("RTL8139: C+ RxRing low bits read val=0x%08x\n", ret)); break; case RxRingAddrHI: ret = s->RxRingAddrHI; DEBUG_PRINT(("RTL8139: C+ RxRing high bits read val=0x%08x\n", ret)); break; case Timer: ret = s->TCTR; DEBUG_PRINT(("RTL8139: TCTR Timer read val=0x%08x\n", ret)); break; case FlashReg: ret = s->TimerInt; DEBUG_PRINT(("RTL8139: FlashReg TimerInt read val=0x%08x\n", ret)); break; default: DEBUG_PRINT(("RTL8139: ioport read(l) addr=0x%x via read(b)\n", addr)); ret = rtl8139_io_readb(opaque, addr); ret |= rtl8139_io_readb(opaque, addr + 1) << 8; ret |= rtl8139_io_readb(opaque, addr + 2) << 16; ret |= rtl8139_io_readb(opaque, addr + 3) << 24; DEBUG_PRINT(("RTL8139: read(l) addr=0x%x val=%08x\n", addr, ret)); break; } return ret; } /* */ static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) { rtl8139_io_writeb(opaque, addr & 0xFF, val); } static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val) { rtl8139_io_writew(opaque, addr & 0xFF, val); } static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val) { rtl8139_io_writel(opaque, addr & 0xFF, val); } static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr) { return rtl8139_io_readb(opaque, addr & 0xFF); } static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr) { return rtl8139_io_readw(opaque, addr & 0xFF); } static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr) { return rtl8139_io_readl(opaque, addr & 0xFF); } /* */ static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) { rtl8139_io_writeb(opaque, addr & 0xFF, val); } static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val) { #ifdef TARGET_WORDS_BIGENDIAN val = bswap16(val); #endif rtl8139_io_writew(opaque, addr & 0xFF, val); } static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val) { #ifdef TARGET_WORDS_BIGENDIAN val = bswap32(val); #endif rtl8139_io_writel(opaque, addr & 0xFF, val); } static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr) { return rtl8139_io_readb(opaque, addr & 0xFF); } static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr) { uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF); #ifdef TARGET_WORDS_BIGENDIAN val = bswap16(val); #endif return val; } static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr) { uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF); #ifdef TARGET_WORDS_BIGENDIAN val = bswap32(val); #endif return val; } /* */ static void rtl8139_save(QEMUFile* f,void* opaque) { RTL8139State* s=(RTL8139State*)opaque; unsigned int i; pci_device_save(s->pci_dev, f); qemu_put_buffer(f, s->phys, 6); qemu_put_buffer(f, s->mult, 8); for (i=0; i<4; ++i) { qemu_put_be32s(f, &s->TxStatus[i]); /* TxStatus0 */ } for (i=0; i<4; ++i) { qemu_put_be32s(f, &s->TxAddr[i]); /* TxAddr0 */ } qemu_put_be32s(f, &s->RxBuf); /* Receive buffer */ qemu_put_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */ qemu_put_be32s(f, &s->RxBufPtr); qemu_put_be32s(f, &s->RxBufAddr); qemu_put_be16s(f, &s->IntrStatus); qemu_put_be16s(f, &s->IntrMask); qemu_put_be32s(f, &s->TxConfig); qemu_put_be32s(f, &s->RxConfig); qemu_put_be32s(f, &s->RxMissed); qemu_put_be16s(f, &s->CSCR); qemu_put_8s(f, &s->Cfg9346); qemu_put_8s(f, &s->Config0); qemu_put_8s(f, &s->Config1); qemu_put_8s(f, &s->Config3); qemu_put_8s(f, &s->Config4); qemu_put_8s(f, &s->Config5); qemu_put_8s(f, &s->clock_enabled); qemu_put_8s(f, &s->bChipCmdState); qemu_put_be16s(f, &s->MultiIntr); qemu_put_be16s(f, &s->BasicModeCtrl); qemu_put_be16s(f, &s->BasicModeStatus); qemu_put_be16s(f, &s->NWayAdvert); qemu_put_be16s(f, &s->NWayLPAR); qemu_put_be16s(f, &s->NWayExpansion); qemu_put_be16s(f, &s->CpCmd); qemu_put_8s(f, &s->TxThresh); i = 0; qemu_put_be32s(f, &i); /* unused. */ qemu_put_buffer(f, s->macaddr, 6); qemu_put_be32(f, s->rtl8139_mmio_io_addr); qemu_put_be32s(f, &s->currTxDesc); qemu_put_be32s(f, &s->currCPlusRxDesc); qemu_put_be32s(f, &s->currCPlusTxDesc); qemu_put_be32s(f, &s->RxRingAddrLO); qemu_put_be32s(f, &s->RxRingAddrHI); for (i=0; ieeprom.contents[i]); } qemu_put_be32(f, s->eeprom.mode); qemu_put_be32s(f, &s->eeprom.tick); qemu_put_8s(f, &s->eeprom.address); qemu_put_be16s(f, &s->eeprom.input); qemu_put_be16s(f, &s->eeprom.output); qemu_put_8s(f, &s->eeprom.eecs); qemu_put_8s(f, &s->eeprom.eesk); qemu_put_8s(f, &s->eeprom.eedi); qemu_put_8s(f, &s->eeprom.eedo); qemu_put_be32s(f, &s->TCTR); qemu_put_be32s(f, &s->TimerInt); qemu_put_be64(f, s->TCTR_base); RTL8139TallyCounters_save(f, &s->tally_counters); } static int rtl8139_load(QEMUFile* f,void* opaque,int version_id) { RTL8139State* s=(RTL8139State*)opaque; unsigned int i; int ret; /* just 2 versions for now */ if (version_id > 3) return -EINVAL; if (version_id >= 3) { ret = pci_device_load(s->pci_dev, f); if (ret < 0) return ret; } /* saved since version 1 */ qemu_get_buffer(f, s->phys, 6); qemu_get_buffer(f, s->mult, 8); for (i=0; i<4; ++i) { qemu_get_be32s(f, &s->TxStatus[i]); /* TxStatus0 */ } for (i=0; i<4; ++i) { qemu_get_be32s(f, &s->TxAddr[i]); /* TxAddr0 */ } qemu_get_be32s(f, &s->RxBuf); /* Receive buffer */ qemu_get_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */ qemu_get_be32s(f, &s->RxBufPtr); qemu_get_be32s(f, &s->RxBufAddr); qemu_get_be16s(f, &s->IntrStatus); qemu_get_be16s(f, &s->IntrMask); qemu_get_be32s(f, &s->TxConfig); qemu_get_be32s(f, &s->RxConfig); qemu_get_be32s(f, &s->RxMissed); qemu_get_be16s(f, &s->CSCR); qemu_get_8s(f, &s->Cfg9346); qemu_get_8s(f, &s->Config0); qemu_get_8s(f, &s->Config1); qemu_get_8s(f, &s->Config3); qemu_get_8s(f, &s->Config4); qemu_get_8s(f, &s->Config5); qemu_get_8s(f, &s->clock_enabled); qemu_get_8s(f, &s->bChipCmdState); qemu_get_be16s(f, &s->MultiIntr); qemu_get_be16s(f, &s->BasicModeCtrl); qemu_get_be16s(f, &s->BasicModeStatus); qemu_get_be16s(f, &s->NWayAdvert); qemu_get_be16s(f, &s->NWayLPAR); qemu_get_be16s(f, &s->NWayExpansion); qemu_get_be16s(f, &s->CpCmd); qemu_get_8s(f, &s->TxThresh); qemu_get_be32s(f, &i); /* unused. */ qemu_get_buffer(f, s->macaddr, 6); s->rtl8139_mmio_io_addr=qemu_get_be32(f); qemu_get_be32s(f, &s->currTxDesc); qemu_get_be32s(f, &s->currCPlusRxDesc); qemu_get_be32s(f, &s->currCPlusTxDesc); qemu_get_be32s(f, &s->RxRingAddrLO); qemu_get_be32s(f, &s->RxRingAddrHI); for (i=0; ieeprom.contents[i]); } s->eeprom.mode=qemu_get_be32(f); qemu_get_be32s(f, &s->eeprom.tick); qemu_get_8s(f, &s->eeprom.address); qemu_get_be16s(f, &s->eeprom.input); qemu_get_be16s(f, &s->eeprom.output); qemu_get_8s(f, &s->eeprom.eecs); qemu_get_8s(f, &s->eeprom.eesk); qemu_get_8s(f, &s->eeprom.eedi); qemu_get_8s(f, &s->eeprom.eedo); /* saved since version 2 */ if (version_id >= 2) { qemu_get_be32s(f, &s->TCTR); qemu_get_be32s(f, &s->TimerInt); s->TCTR_base=qemu_get_be64(f); RTL8139TallyCounters_load(f, &s->tally_counters); } else { /* not saved, use default */ s->TCTR = 0; s->TimerInt = 0; s->TCTR_base = 0; RTL8139TallyCounters_clear(&s->tally_counters); } return 0; } /***********************************************************/ /* PCI RTL8139 definitions */ typedef struct PCIRTL8139State { PCIDevice dev; RTL8139State rtl8139; } PCIRTL8139State; static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num, uint32_t addr, uint32_t size, int type) { PCIRTL8139State *d = (PCIRTL8139State *)pci_dev; RTL8139State *s = &d->rtl8139; cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr); } static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num, uint32_t addr, uint32_t size, int type) { PCIRTL8139State *d = (PCIRTL8139State *)pci_dev; RTL8139State *s = &d->rtl8139; register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s); register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s); register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s); register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s); register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s); register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s); } static CPUReadMemoryFunc *rtl8139_mmio_read[3] = { rtl8139_mmio_readb, rtl8139_mmio_readw, rtl8139_mmio_readl, }; static CPUWriteMemoryFunc *rtl8139_mmio_write[3] = { rtl8139_mmio_writeb, rtl8139_mmio_writew, rtl8139_mmio_writel, }; static inline int64_t rtl8139_get_next_tctr_time(RTL8139State *s, int64_t current_time) { int64_t next_time = current_time + muldiv64(1, ticks_per_sec, PCI_FREQUENCY); if (next_time <= current_time) next_time = current_time + 1; return next_time; } #ifdef RTL8139_ONBOARD_TIMER static void rtl8139_timer(void *opaque) { RTL8139State *s = opaque; int is_timeout = 0; int64_t curr_time; uint32_t curr_tick; if (!s->clock_enabled) { DEBUG_PRINT(("RTL8139: >>> timer: clock is not running\n")); return; } curr_time = qemu_get_clock(vm_clock); curr_tick = muldiv64(curr_time - s->TCTR_base, PCI_FREQUENCY, ticks_per_sec); if (s->TimerInt && curr_tick >= s->TimerInt) { if (s->TCTR < s->TimerInt || curr_tick < s->TCTR) { is_timeout = 1; } } s->TCTR = curr_tick; // DEBUG_PRINT(("RTL8139: >>> timer: tick=%08u\n", s->TCTR)); if (is_timeout) { DEBUG_PRINT(("RTL8139: >>> timer: timeout tick=%08u\n", s->TCTR)); s->IntrStatus |= PCSTimeout; rtl8139_update_irq(s); } qemu_mod_timer(s->timer, rtl8139_get_next_tctr_time(s,curr_time)); } #endif /* RTL8139_ONBOARD_TIMER */ void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn) { PCIRTL8139State *d; RTL8139State *s; uint8_t *pci_conf; d = (PCIRTL8139State *)pci_register_device(bus, "RTL8139", sizeof(PCIRTL8139State), devfn, NULL, NULL); pci_conf = d->dev.config; pci_conf[0x00] = 0xec; /* Realtek 8139 */ pci_conf[0x01] = 0x10; pci_conf[0x02] = 0x39; pci_conf[0x03] = 0x81; pci_conf[0x04] = 0x05; /* command = I/O space, Bus Master */ pci_conf[0x08] = RTL8139_PCI_REVID; /* PCI revision ID; >=0x20 is for 8139C+ */ pci_conf[0x0a] = 0x00; /* ethernet network controller */ pci_conf[0x0b] = 0x02; pci_conf[0x0e] = 0x00; /* header_type */ pci_conf[0x3d] = 1; /* interrupt pin 0 */ pci_conf[0x34] = 0xdc; s = &d->rtl8139; /* I/O handler for memory-mapped I/O */ s->rtl8139_mmio_io_addr = cpu_register_io_memory(0, rtl8139_mmio_read, rtl8139_mmio_write, s); pci_register_io_region(&d->dev, 0, 0x100, PCI_ADDRESS_SPACE_IO, rtl8139_ioport_map); pci_register_io_region(&d->dev, 1, 0x100, PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map); s->pci_dev = (PCIDevice *)d; memcpy(s->macaddr, nd->macaddr, 6); rtl8139_reset(s); s->vc = qemu_new_vlan_client(nd->vlan, nd->model, rtl8139_receive, rtl8139_can_receive, s); snprintf(s->vc->info_str, sizeof(s->vc->info_str), "rtl8139 pci macaddr=%02x:%02x:%02x:%02x:%02x:%02x", s->macaddr[0], s->macaddr[1], s->macaddr[2], s->macaddr[3], s->macaddr[4], s->macaddr[5]); s->cplus_txbuffer = NULL; s->cplus_txbuffer_len = 0; s->cplus_txbuffer_offset = 0; register_savevm("rtl8139", -1, 3, rtl8139_save, rtl8139_load, s); #ifdef RTL8139_ONBOARD_TIMER s->timer = qemu_new_timer(vm_clock, rtl8139_timer, s); qemu_mod_timer(s->timer, rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock))); #endif /* RTL8139_ONBOARD_TIMER */ }