| /** |
| * 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 |
| * |
| * 2010-Feb-04 Frediano Ziglio: Rewrote timer support using QEMU timer only |
| * when strictly needed (required for for |
| * Darwin) |
| * 2011-Mar-22 Benjamin Poirier: Implemented VLAN offloading |
| */ |
| |
| /* For crc32 */ |
| #include <zlib.h> |
| |
| #include "hw/hw.h" |
| #include "hw/pci/pci.h" |
| #include "sysemu/dma.h" |
| #include "qemu/timer.h" |
| #include "net/net.h" |
| #include "hw/loader.h" |
| #include "sysemu/sysemu.h" |
| #include "qemu/iov.h" |
| |
| /* debug RTL8139 card */ |
| //#define DEBUG_RTL8139 1 |
| |
| #define PCI_FREQUENCY 33000000L |
| |
| #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 ) ) |
| |
| #define ETHER_ADDR_LEN 6 |
| #define ETHER_TYPE_LEN 2 |
| #define ETH_HLEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) |
| #define ETH_P_IP 0x0800 /* Internet Protocol packet */ |
| #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ |
| #define ETH_MTU 1500 |
| |
| #define VLAN_TCI_LEN 2 |
| #define VLAN_HLEN (ETHER_TYPE_LEN + VLAN_TCI_LEN) |
| |
| #if defined (DEBUG_RTL8139) |
| # define DPRINTF(fmt, ...) \ |
| do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0) |
| #else |
| static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...) |
| { |
| return 0; |
| } |
| #endif |
| |
| #define TYPE_RTL8139 "rtl8139" |
| |
| #define RTL8139(obj) \ |
| OBJECT_CHECK(RTL8139State, (obj), TYPE_RTL8139) |
| |
| /* 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, /* Packet Underrun / Link Change */ |
| 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_Normal = 0x00, |
| Cfg9346_Autoload = 0x40, |
| Cfg9346_Programming = 0x80, |
| Cfg9346_ConfigWrite = 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); |
| |
| typedef struct RTL8139State { |
| /*< private >*/ |
| PCIDevice parent_obj; |
| /*< public >*/ |
| |
| 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; |
| |
| NICState *nic; |
| NICConf conf; |
| |
| /* C ring mode */ |
| uint32_t currTxDesc; |
| |
| /* C+ mode */ |
| uint32_t cplus_enabled; |
| |
| 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; |
| int64_t TimerExpire; |
| |
| MemoryRegion bar_io; |
| MemoryRegion bar_mem; |
| |
| /* Support migration to/from old versions */ |
| int rtl8139_mmio_io_addr_dummy; |
| } RTL8139State; |
| |
| /* Writes tally counters to memory via DMA */ |
| static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr); |
| |
| static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time); |
| |
| static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command) |
| { |
| DPRINTF("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; |
| DPRINTF("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 */ |
| DPRINTF("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: |
| DPRINTF("eeprom write enabled\n"); |
| break; |
| case Chip9346_op_write_all: |
| DPRINTF("eeprom begin write all\n"); |
| break; |
| case Chip9346_op_write_disable: |
| DPRINTF("eeprom write disabled\n"); |
| break; |
| } |
| break; |
| } |
| } |
| |
| static void prom9346_shift_clock(EEprom9346 *eeprom) |
| { |
| int bit = eeprom->eedi?1:0; |
| |
| ++ eeprom->tick; |
| |
| DPRINTF("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; |
| DPRINTF("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; |
| |
| DPRINTF("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; |
| |
| DPRINTF("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) |
| { |
| DPRINTF("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; |
| } |
| DPRINTF("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; |
| |
| DPRINTF("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; |
| |
| DPRINTF("=== eeprom: begin access, enter command mode\n"); |
| } |
| |
| if (!eecs) |
| { |
| DPRINTF("=== eeprom: end access\n"); |
| return; |
| } |
| |
| if (!old_eesk && eesk) |
| { |
| /* SK front rules */ |
| prom9346_shift_clock(eeprom); |
| } |
| } |
| |
| static void rtl8139_update_irq(RTL8139State *s) |
| { |
| PCIDevice *d = PCI_DEVICE(s); |
| int isr; |
| isr = (s->IntrStatus & s->IntrMask) & 0xffff; |
| |
| DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus, |
| s->IntrMask); |
| |
| pci_set_irq(d, (isr != 0)); |
| } |
| |
| 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) |
| { |
| PCIDevice *d = PCI_DEVICE(s); |
| |
| 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))) |
| { |
| DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped); |
| |
| if (size > wrapped) |
| { |
| pci_dma_write(d, s->RxBuf + s->RxBufAddr, |
| buf, size-wrapped); |
| } |
| |
| /* reset buffer pointer */ |
| s->RxBufAddr = 0; |
| |
| pci_dma_write(d, s->RxBuf + s->RxBufAddr, |
| buf + (size-wrapped), wrapped); |
| |
| s->RxBufAddr = wrapped; |
| |
| return; |
| } |
| } |
| |
| /* non-wrapping path or overwrapping enabled */ |
| pci_dma_write(d, s->RxBuf + s->RxBufAddr, buf, size); |
| |
| s->RxBufAddr += size; |
| } |
| |
| #define MIN_BUF_SIZE 60 |
| static inline dma_addr_t rtl8139_addr64(uint32_t low, uint32_t high) |
| { |
| return low | ((uint64_t)high << 32); |
| } |
| |
| /* Workaround for buggy guest driver such as linux who allocates rx |
| * rings after the receiver were enabled. */ |
| static bool rtl8139_cp_rx_valid(RTL8139State *s) |
| { |
| return !(s->RxRingAddrLO == 0 && s->RxRingAddrHI == 0); |
| } |
| |
| static int rtl8139_can_receive(NetClientState *nc) |
| { |
| RTL8139State *s = qemu_get_nic_opaque(nc); |
| 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) && rtl8139_cp_rx_valid(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 || (s->IntrMask & RxOverflow)); |
| } |
| } |
| |
| static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt) |
| { |
| RTL8139State *s = qemu_get_nic_opaque(nc); |
| PCIDevice *d = PCI_DEVICE(s); |
| /* size is the length of the buffer passed to the driver */ |
| int size = size_; |
| const uint8_t *dot1q_buf = NULL; |
| |
| uint32_t packet_header = 0; |
| |
| uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN]; |
| static const uint8_t broadcast_macaddr[6] = |
| { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| |
| DPRINTF(">>> received len=%d\n", size); |
| |
| /* test if board clock is stopped */ |
| if (!s->clock_enabled) |
| { |
| DPRINTF("stopped ==========================\n"); |
| return -1; |
| } |
| |
| /* first check if receiver is enabled */ |
| |
| if (!rtl8139_receiver_enabled(s)) |
| { |
| DPRINTF("receiver disabled ================\n"); |
| return -1; |
| } |
| |
| /* XXX: check this */ |
| if (s->RxConfig & AcceptAllPhys) { |
| /* promiscuous: receive all */ |
| DPRINTF(">>> packet received in promiscuous mode\n"); |
| |
| } else { |
| if (!memcmp(buf, broadcast_macaddr, 6)) { |
| /* broadcast address */ |
| if (!(s->RxConfig & AcceptBroadcast)) |
| { |
| DPRINTF(">>> broadcast packet rejected\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxERR; |
| |
| return size; |
| } |
| |
| packet_header |= RxBroadcast; |
| |
| DPRINTF(">>> broadcast packet received\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxOkBrd; |
| |
| } else if (buf[0] & 0x01) { |
| /* multicast */ |
| if (!(s->RxConfig & AcceptMulticast)) |
| { |
| DPRINTF(">>> multicast packet rejected\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxERR; |
| |
| return size; |
| } |
| |
| int mcast_idx = compute_mcast_idx(buf); |
| |
| if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) |
| { |
| DPRINTF(">>> multicast address mismatch\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxERR; |
| |
| return size; |
| } |
| |
| packet_header |= RxMulticast; |
| |
| DPRINTF(">>> 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)) |
| { |
| DPRINTF(">>> rejecting physical address matching packet\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxERR; |
| |
| return size; |
| } |
| |
| packet_header |= RxPhysical; |
| |
| DPRINTF(">>> physical address matching packet received\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxOkPhy; |
| |
| } else { |
| |
| DPRINTF(">>> unknown packet\n"); |
| |
| /* update tally counter */ |
| ++s->tally_counters.RxERR; |
| |
| return size; |
| } |
| } |
| |
| /* if too small buffer, then expand it |
| * Include some tailroom in case a vlan tag is later removed. */ |
| if (size < MIN_BUF_SIZE + VLAN_HLEN) { |
| memcpy(buf1, buf, size); |
| memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size); |
| buf = buf1; |
| if (size < MIN_BUF_SIZE) { |
| size = MIN_BUF_SIZE; |
| } |
| } |
| |
| if (rtl8139_cp_receiver_enabled(s)) |
| { |
| if (!rtl8139_cp_rx_valid(s)) { |
| return size; |
| } |
| |
| DPRINTF("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; |
| dma_addr_t cplus_rx_ring_desc; |
| |
| cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI); |
| cplus_rx_ring_desc += 16 * descriptor; |
| |
| DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at " |
| "%08x %08x = "DMA_ADDR_FMT"\n", descriptor, s->RxRingAddrHI, |
| s->RxRingAddrLO, cplus_rx_ring_desc); |
| |
| uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI; |
| |
| pci_dma_read(d, cplus_rx_ring_desc, &val, 4); |
| rxdw0 = le32_to_cpu(val); |
| pci_dma_read(d, cplus_rx_ring_desc+4, &val, 4); |
| rxdw1 = le32_to_cpu(val); |
| pci_dma_read(d, cplus_rx_ring_desc+8, &val, 4); |
| rxbufLO = le32_to_cpu(val); |
| pci_dma_read(d, cplus_rx_ring_desc+12, &val, 4); |
| rxbufHI = le32_to_cpu(val); |
| |
| DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n", |
| descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI); |
| |
| if (!(rxdw0 & CP_RX_OWN)) |
| { |
| DPRINTF("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 size_; |
| } |
| |
| uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK; |
| |
| /* write VLAN info to descriptor variables. */ |
| if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *) |
| &buf[ETHER_ADDR_LEN * 2]) == ETH_P_8021Q) { |
| dot1q_buf = &buf[ETHER_ADDR_LEN * 2]; |
| size -= VLAN_HLEN; |
| /* if too small buffer, use the tailroom added duing expansion */ |
| if (size < MIN_BUF_SIZE) { |
| size = MIN_BUF_SIZE; |
| } |
| |
| rxdw1 &= ~CP_RX_VLAN_TAG_MASK; |
| /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */ |
| rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *) |
| &dot1q_buf[ETHER_TYPE_LEN]); |
| |
| DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n", |
| be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN])); |
| } else { |
| /* reset VLAN tag flag */ |
| rxdw1 &= ~CP_RX_TAVA; |
| } |
| |
| /* TODO: scatter the packet over available receive ring descriptors space */ |
| |
| if (size+4 > rx_space) |
| { |
| DPRINTF("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 size_; |
| } |
| |
| dma_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI); |
| |
| /* receive/copy to target memory */ |
| if (dot1q_buf) { |
| pci_dma_write(d, rx_addr, buf, 2 * ETHER_ADDR_LEN); |
| pci_dma_write(d, rx_addr + 2 * ETHER_ADDR_LEN, |
| buf + 2 * ETHER_ADDR_LEN + VLAN_HLEN, |
| size - 2 * ETHER_ADDR_LEN); |
| } else { |
| pci_dma_write(d, rx_addr, buf, size); |
| } |
| |
| if (s->CpCmd & CPlusRxChkSum) |
| { |
| /* do some packet checksumming */ |
| } |
| |
| /* write checksum */ |
| val = cpu_to_le32(crc32(0, buf, size_)); |
| pci_dma_write(d, 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); |
| |
| /* update ring data */ |
| val = cpu_to_le32(rxdw0); |
| pci_dma_write(d, cplus_rx_ring_desc, (uint8_t *)&val, 4); |
| val = cpu_to_le32(rxdw1); |
| pci_dma_write(d, 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; |
| } |
| |
| DPRINTF("done C+ Rx mode ----------------\n"); |
| |
| } |
| else |
| { |
| DPRINTF("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) |
| { |
| DPRINTF("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 size_; |
| } |
| |
| 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 */ |
| val = cpu_to_le32(crc32(0, buf, size)); |
| 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 */ |
| |
| DPRINTF("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); |
| } |
| |
| return size_; |
| } |
| |
| static ssize_t rtl8139_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
| { |
| return rtl8139_do_receive(nc, 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(DeviceState *d) |
| { |
| RTL8139State *s = RTL8139(d); |
| int i; |
| |
| /* restore MAC address */ |
| memcpy(s->phys, s->conf.macaddr.a, 6); |
| qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys); |
| |
| /* reset interrupt mask */ |
| s->IntrStatus = 0; |
| s->IntrMask = 0; |
| |
| rtl8139_update_irq(s); |
| |
| /* 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->cplus_enabled = 0; |
| |
| |
| // 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 */ |
| /* preserve link state */ |
| s->BasicModeStatus |= qemu_get_queue(s->nic)->link_down ? 0 : 0x04; |
| |
| 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_dma_write(RTL8139State *s, dma_addr_t tc_addr) |
| { |
| PCIDevice *d = PCI_DEVICE(s); |
| RTL8139TallyCounters *tally_counters = &s->tally_counters; |
| uint16_t val16; |
| uint32_t val32; |
| uint64_t val64; |
| |
| val64 = cpu_to_le64(tally_counters->TxOk); |
| pci_dma_write(d, tc_addr + 0, (uint8_t *)&val64, 8); |
| |
| val64 = cpu_to_le64(tally_counters->RxOk); |
| pci_dma_write(d, tc_addr + 8, (uint8_t *)&val64, 8); |
| |
| val64 = cpu_to_le64(tally_counters->TxERR); |
| pci_dma_write(d, tc_addr + 16, (uint8_t *)&val64, 8); |
| |
| val32 = cpu_to_le32(tally_counters->RxERR); |
| pci_dma_write(d, tc_addr + 24, (uint8_t *)&val32, 4); |
| |
| val16 = cpu_to_le16(tally_counters->MissPkt); |
| pci_dma_write(d, tc_addr + 28, (uint8_t *)&val16, 2); |
| |
| val16 = cpu_to_le16(tally_counters->FAE); |
| pci_dma_write(d, tc_addr + 30, (uint8_t *)&val16, 2); |
| |
| val32 = cpu_to_le32(tally_counters->Tx1Col); |
| pci_dma_write(d, tc_addr + 32, (uint8_t *)&val32, 4); |
| |
| val32 = cpu_to_le32(tally_counters->TxMCol); |
| pci_dma_write(d, tc_addr + 36, (uint8_t *)&val32, 4); |
| |
| val64 = cpu_to_le64(tally_counters->RxOkPhy); |
| pci_dma_write(d, tc_addr + 40, (uint8_t *)&val64, 8); |
| |
| val64 = cpu_to_le64(tally_counters->RxOkBrd); |
| pci_dma_write(d, tc_addr + 48, (uint8_t *)&val64, 8); |
| |
| val32 = cpu_to_le32(tally_counters->RxOkMul); |
| pci_dma_write(d, tc_addr + 56, (uint8_t *)&val32, 4); |
| |
| val16 = cpu_to_le16(tally_counters->TxAbt); |
| pci_dma_write(d, tc_addr + 60, (uint8_t *)&val16, 2); |
| |
| val16 = cpu_to_le16(tally_counters->TxUndrn); |
| pci_dma_write(d, tc_addr + 62, (uint8_t *)&val16, 2); |
| } |
| |
| /* Loads values of tally counters from VM state file */ |
| |
| static const VMStateDescription vmstate_tally_counters = { |
| .name = "tally_counters", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField []) { |
| VMSTATE_UINT64(TxOk, RTL8139TallyCounters), |
| VMSTATE_UINT64(RxOk, RTL8139TallyCounters), |
| VMSTATE_UINT64(TxERR, RTL8139TallyCounters), |
| VMSTATE_UINT32(RxERR, RTL8139TallyCounters), |
| VMSTATE_UINT16(MissPkt, RTL8139TallyCounters), |
| VMSTATE_UINT16(FAE, RTL8139TallyCounters), |
| VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters), |
| VMSTATE_UINT32(TxMCol, RTL8139TallyCounters), |
| VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters), |
| VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters), |
| VMSTATE_UINT16(TxAbt, RTL8139TallyCounters), |
| VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val) |
| { |
| DeviceState *d = DEVICE(s); |
| |
| val &= 0xff; |
| |
| DPRINTF("ChipCmd write val=0x%08x\n", val); |
| |
| if (val & CmdReset) |
| { |
| DPRINTF("ChipCmd reset\n"); |
| rtl8139_reset(d); |
| } |
| if (val & CmdRxEnb) |
| { |
| DPRINTF("ChipCmd enable receiver\n"); |
| |
| s->currCPlusRxDesc = 0; |
| } |
| if (val & CmdTxEnb) |
| { |
| DPRINTF("ChipCmd enable transmitter\n"); |
| |
| s->currCPlusTxDesc = 0; |
| } |
| |
| /* mask unwritable 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) |
| { |
| DPRINTF("receiver buffer data available 0x%04x\n", unread); |
| return 0; |
| } |
| |
| DPRINTF("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; |
| |
| DPRINTF("ChipCmd read val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xffff; |
| |
| DPRINTF("C+ command register write(w) val=0x%04x\n", val); |
| |
| s->cplus_enabled = 1; |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0xff84, s->CpCmd); |
| |
| s->CpCmd = val; |
| } |
| |
| static uint32_t rtl8139_CpCmd_read(RTL8139State *s) |
| { |
| uint32_t ret = s->CpCmd; |
| |
| DPRINTF("C+ command register read(w) val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val); |
| } |
| |
| static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s) |
| { |
| uint32_t ret = 0; |
| |
| DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static int rtl8139_config_writable(RTL8139State *s) |
| { |
| if ((s->Cfg9346 & Chip9346_op_mask) == Cfg9346_ConfigWrite) |
| { |
| return 1; |
| } |
| |
| DPRINTF("Configuration registers are write-protected\n"); |
| |
| return 0; |
| } |
| |
| static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xffff; |
| |
| DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val); |
| |
| /* mask unwritable bits */ |
| uint32_t mask = 0x4cff; |
| |
| if (1 || !rtl8139_config_writable(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; |
| |
| DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xffff; |
| |
| DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val); |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0xff3f, s->BasicModeStatus); |
| |
| s->BasicModeStatus = val; |
| } |
| |
| static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s) |
| { |
| uint32_t ret = s->BasicModeStatus; |
| |
| DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val) |
| { |
| DeviceState *d = DEVICE(s); |
| |
| val &= 0xff; |
| |
| DPRINTF("Cfg9346 write val=0x%02x\n", val); |
| |
| /* mask unwritable 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(d); |
| } |
| |
| 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; |
| } |
| } |
| |
| DPRINTF("Cfg9346 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Config0_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xff; |
| |
| DPRINTF("Config0 write val=0x%02x\n", val); |
| |
| if (!rtl8139_config_writable(s)) { |
| return; |
| } |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0xf8, s->Config0); |
| |
| s->Config0 = val; |
| } |
| |
| static uint32_t rtl8139_Config0_read(RTL8139State *s) |
| { |
| uint32_t ret = s->Config0; |
| |
| DPRINTF("Config0 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Config1_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xff; |
| |
| DPRINTF("Config1 write val=0x%02x\n", val); |
| |
| if (!rtl8139_config_writable(s)) { |
| return; |
| } |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0xC, s->Config1); |
| |
| s->Config1 = val; |
| } |
| |
| static uint32_t rtl8139_Config1_read(RTL8139State *s) |
| { |
| uint32_t ret = s->Config1; |
| |
| DPRINTF("Config1 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Config3_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xff; |
| |
| DPRINTF("Config3 write val=0x%02x\n", val); |
| |
| if (!rtl8139_config_writable(s)) { |
| return; |
| } |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0x8F, s->Config3); |
| |
| s->Config3 = val; |
| } |
| |
| static uint32_t rtl8139_Config3_read(RTL8139State *s) |
| { |
| uint32_t ret = s->Config3; |
| |
| DPRINTF("Config3 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Config4_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xff; |
| |
| DPRINTF("Config4 write val=0x%02x\n", val); |
| |
| if (!rtl8139_config_writable(s)) { |
| return; |
| } |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0x0a, s->Config4); |
| |
| s->Config4 = val; |
| } |
| |
| static uint32_t rtl8139_Config4_read(RTL8139State *s) |
| { |
| uint32_t ret = s->Config4; |
| |
| DPRINTF("Config4 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_Config5_write(RTL8139State *s, uint32_t val) |
| { |
| val &= 0xff; |
| |
| DPRINTF("Config5 write val=0x%02x\n", val); |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0x80, s->Config5); |
| |
| s->Config5 = val; |
| } |
| |
| static uint32_t rtl8139_Config5_read(RTL8139State *s) |
| { |
| uint32_t ret = s->Config5; |
| |
| DPRINTF("Config5 read val=0x%02x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val) |
| { |
| if (!rtl8139_transmitter_enabled(s)) |
| { |
| DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val); |
| return; |
| } |
| |
| DPRINTF("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) |
| { |
| DPRINTF("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; |
| |
| DPRINTF("TxConfig read val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("RxConfig write val=0x%08x\n", val); |
| |
| /* mask unwritable 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)); |
| |
| DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize); |
| } |
| |
| static uint32_t rtl8139_RxConfig_read(RTL8139State *s) |
| { |
| uint32_t ret = s->RxConfig; |
| |
| DPRINTF("RxConfig read val=0x%08x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size, |
| int do_interrupt, const uint8_t *dot1q_buf) |
| { |
| struct iovec *iov = NULL; |
| |
| if (!size) |
| { |
| DPRINTF("+++ empty ethernet frame\n"); |
| return; |
| } |
| |
| if (dot1q_buf && size >= ETHER_ADDR_LEN * 2) { |
| iov = (struct iovec[3]) { |
| { .iov_base = buf, .iov_len = ETHER_ADDR_LEN * 2 }, |
| { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN }, |
| { .iov_base = buf + ETHER_ADDR_LEN * 2, |
| .iov_len = size - ETHER_ADDR_LEN * 2 }, |
| }; |
| } |
| |
| if (TxLoopBack == (s->TxConfig & TxLoopBack)) |
| { |
| size_t buf2_size; |
| uint8_t *buf2; |
| |
| if (iov) { |
| buf2_size = iov_size(iov, 3); |
| buf2 = g_malloc(buf2_size); |
| iov_to_buf(iov, 3, 0, buf2, buf2_size); |
| buf = buf2; |
| } |
| |
| DPRINTF("+++ transmit loopback mode\n"); |
| rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt); |
| |
| if (iov) { |
| g_free(buf2); |
| } |
| } |
| else |
| { |
| if (iov) { |
| qemu_sendv_packet(qemu_get_queue(s->nic), iov, 3); |
| } else { |
| qemu_send_packet(qemu_get_queue(s->nic), buf, size); |
| } |
| } |
| } |
| |
| static int rtl8139_transmit_one(RTL8139State *s, int descriptor) |
| { |
| if (!rtl8139_transmitter_enabled(s)) |
| { |
| DPRINTF("+++ cannot transmit from descriptor %d: transmitter " |
| "disabled\n", descriptor); |
| return 0; |
| } |
| |
| if (s->TxStatus[descriptor] & TxHostOwns) |
| { |
| DPRINTF("+++ cannot transmit from descriptor %d: owned by host " |
| "(%08x)\n", descriptor, s->TxStatus[descriptor]); |
| return 0; |
| } |
| |
| DPRINTF("+++ transmitting from descriptor %d\n", descriptor); |
| |
| PCIDevice *d = PCI_DEVICE(s); |
| int txsize = s->TxStatus[descriptor] & 0x1fff; |
| uint8_t txbuffer[0x2000]; |
| |
| DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n", |
| txsize, s->TxAddr[descriptor]); |
| |
| pci_dma_read(d, s->TxAddr[descriptor], txbuffer, txsize); |
| |
| /* Mark descriptor as transferred */ |
| s->TxStatus[descriptor] |= TxHostOwns; |
| s->TxStatus[descriptor] |= TxStatOK; |
| |
| rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL); |
| |
| DPRINTF("+++ 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)) |
| { |
| DPRINTF("+++ C+ mode: transmitter disabled\n"); |
| return 0; |
| } |
| |
| if (!rtl8139_cp_transmitter_enabled(s)) |
| { |
| DPRINTF("+++ C+ mode: C+ transmitter disabled\n"); |
| return 0 ; |
| } |
| |
| PCIDevice *d = PCI_DEVICE(s); |
| int descriptor = s->currCPlusTxDesc; |
| |
| dma_addr_t cplus_tx_ring_desc = rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]); |
| |
| /* Normal priority ring */ |
| cplus_tx_ring_desc += 16 * descriptor; |
| |
| DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at " |
| "%08x %08x = 0x"DMA_ADDR_FMT"\n", descriptor, s->TxAddr[1], |
| s->TxAddr[0], cplus_tx_ring_desc); |
| |
| uint32_t val, txdw0,txdw1,txbufLO,txbufHI; |
| |
| pci_dma_read(d, cplus_tx_ring_desc, (uint8_t *)&val, 4); |
| txdw0 = le32_to_cpu(val); |
| pci_dma_read(d, cplus_tx_ring_desc+4, (uint8_t *)&val, 4); |
| txdw1 = le32_to_cpu(val); |
| pci_dma_read(d, cplus_tx_ring_desc+8, (uint8_t *)&val, 4); |
| txbufLO = le32_to_cpu(val); |
| pci_dma_read(d, cplus_tx_ring_desc+12, (uint8_t *)&val, 4); |
| txbufHI = le32_to_cpu(val); |
| |
| DPRINTF("+++ 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 add tag flag */ |
| #define CP_TX_TAGC (1<<17) |
| /* w1 bits 0...15 : VLAN tag (big endian) */ |
| #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)) |
| { |
| DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor); |
| return 0 ; |
| } |
| |
| DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor); |
| |
| if (txdw0 & CP_TX_FS) |
| { |
| DPRINTF("+++ 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; |
| dma_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 = g_malloc(s->cplus_txbuffer_len); |
| s->cplus_txbuffer_offset = 0; |
| |
| DPRINTF("+++ C+ mode transmission buffer allocated space %d\n", |
| s->cplus_txbuffer_len); |
| } |
| |
| if (s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len) |
| { |
| /* The spec didn't tell the maximum size, stick to CP_TX_BUFFER_SIZE */ |
| txsize = s->cplus_txbuffer_len - s->cplus_txbuffer_offset; |
| DPRINTF("+++ C+ mode transmission buffer overrun, truncated descriptor" |
| "length to %d\n", txsize); |
| } |
| |
| if (!s->cplus_txbuffer) |
| { |
| /* out of memory */ |
| |
| DPRINTF("+++ 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 */ |
| |
| DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at " |
| DMA_ADDR_FMT" to offset %d\n", txsize, tx_addr, |
| s->cplus_txbuffer_offset); |
| |
| pci_dma_read(d, 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); |
| pci_dma_write(d, cplus_tx_ring_desc, (uint8_t *)&val, 4); |
| |
| /* Now decide if descriptor being processed is holding the last segment of packet */ |
| if (txdw0 & CP_TX_LS) |
| { |
| uint8_t dot1q_buffer_space[VLAN_HLEN]; |
| uint16_t *dot1q_buffer; |
| |
| DPRINTF("+++ 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; |
| |
| /* create vlan tag */ |
| if (txdw1 & CP_TX_TAGC) { |
| /* the vlan tag is in BE byte order in the descriptor |
| * BE + le_to_cpu() + ~swap()~ = cpu */ |
| DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n", |
| bswap16(txdw1 & CP_TX_VLAN_TAG_MASK)); |
| |
| dot1q_buffer = (uint16_t *) dot1q_buffer_space; |
| dot1q_buffer[0] = cpu_to_be16(ETH_P_8021Q); |
| /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */ |
| dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK); |
| } else { |
| dot1q_buffer = NULL; |
| } |
| |
| /* 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)) |
| { |
| DPRINTF("+++ C+ mode offloaded task checksum\n"); |
| |
| /* ip packet header */ |
| ip_header *ip = NULL; |
| int hlen = 0; |
| uint8_t ip_protocol = 0; |
| uint16_t ip_data_len = 0; |
| |
| uint8_t *eth_payload_data = NULL; |
| size_t eth_payload_len = 0; |
| |
| int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12)); |
| if (proto == ETH_P_IP) |
| { |
| DPRINTF("+++ 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) { |
| DPRINTF("+++ 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) |
| { |
| DPRINTF("+++ C+ mode need IP checksum\n"); |
| |
| if (hlen<sizeof(ip_header) || hlen>eth_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); |
| DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n", |
| hlen, ip->ip_sum); |
| } |
| } |
| |
| if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP) |
| { |
| int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK; |
| |
| DPRINTF("+++ 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; |
| |
| DPRINTF("+++ 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; |
| } |
| |
| DPRINTF("+++ 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); |
| |
| DPRINTF("+++ 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); |
| DPRINTF("+++ 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); |
| DPRINTF("+++ 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; |
| DPRINTF("+++ C+ mode TSO transferring packet size " |
| "%d\n", tso_send_size); |
| rtl8139_transfer_frame(s, saved_buffer, tso_send_size, |
| 0, (uint8_t *) dot1q_buffer); |
| |
| /* 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)) |
| { |
| DPRINTF("+++ 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) |
| { |
| DPRINTF("+++ 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); |
| DPRINTF("+++ 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) |
| { |
| DPRINTF("+++ 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); |
| DPRINTF("+++ 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; |
| |
| DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size); |
| |
| rtl8139_transfer_frame(s, saved_buffer, saved_size, 1, |
| (uint8_t *) dot1q_buffer); |
| |
| /* 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 |
| { |
| g_free(saved_buffer); |
| } |
| } |
| else |
| { |
| DPRINTF("+++ 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) |
| { |
| DPRINTF("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) |
| { |
| DPRINTF("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 (s->cplus_enabled) |
| { |
| DPRINTF("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)) |
| { |
| hwaddr tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]); |
| |
| /* dump tally counters to specified memory location */ |
| RTL8139TallyCounters_dma_write(s, tc_addr); |
| |
| /* mark dump completed */ |
| s->TxStatus[0] &= ~0x8; |
| } |
| |
| return; |
| } |
| |
| DPRINTF("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_TxAddr_read(RTL8139State *s, uint32_t regs[], |
| uint32_t base, uint8_t addr, |
| int size) |
| { |
| uint32_t reg = (addr - base) / 4; |
| uint32_t offset = addr & 0x3; |
| uint32_t ret = 0; |
| |
| if (addr & (size - 1)) { |
| DPRINTF("not implemented read for TxStatus/TxAddr " |
| "addr=0x%x size=0x%x\n", addr, size); |
| return ret; |
| } |
| |
| switch (size) { |
| case 1: /* fall through */ |
| case 2: /* fall through */ |
| case 4: |
| ret = (regs[reg] >> offset * 8) & (((uint64_t)1 << (size * 8)) - 1); |
| DPRINTF("TxStatus/TxAddr[%d] read addr=0x%x size=0x%x val=0x%08x\n", |
| reg, addr, size, ret); |
| break; |
| default: |
| DPRINTF("unsupported size 0x%x of TxStatus/TxAddr reading\n", size); |
| break; |
| } |
| |
| 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) ; |
| |
| |
| DPRINTF("TSAD read val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static uint16_t rtl8139_CSCR_read(RTL8139State *s) |
| { |
| uint16_t ret = s->CSCR; |
| |
| DPRINTF("CSCR read val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val) |
| { |
| DPRINTF("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]; |
| |
| DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("RxBufPtr write val=0x%04x\n", val); |
| |
| /* this value is off by 16 */ |
| s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize); |
| |
| /* more buffer space may be available so try to receive */ |
| qemu_flush_queued_packets(qemu_get_queue(s->nic)); |
| |
| DPRINTF(" 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; |
| |
| DPRINTF("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; |
| |
| DPRINTF("RxBufAddr read val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("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; |
| |
| DPRINTF("RxBuf read val=0x%08x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("IntrMask write(w) val=0x%04x\n", val); |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0x1e00, s->IntrMask); |
| |
| s->IntrMask = val; |
| |
| rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); |
| rtl8139_update_irq(s); |
| |
| } |
| |
| static uint32_t rtl8139_IntrMask_read(RTL8139State *s) |
| { |
| uint32_t ret = s->IntrMask; |
| |
| DPRINTF("IntrMask read(w) val=0x%04x\n", ret); |
| |
| return ret; |
| } |
| |
| static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val) |
| { |
| DPRINTF("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 unwritable 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; |
| /* |
| * Computing if we miss an interrupt here is not that correct but |
| * considered that we should have had already an interrupt |
| * and probably emulated is slower is better to assume this resetting was |
| * done before testing on previous rtl8139_update_irq lead to IRQ losing |
| */ |
| rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); |
| rtl8139_update_irq(s); |
| |
| #endif |
| } |
| |
| static uint32_t rtl8139_IntrStatus_read(RTL8139State *s) |
| { |
| rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); |
| |
| uint32_t ret = s->IntrStatus; |
| |
| DPRINTF("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) |
| { |
| DPRINTF("MultiIntr write(w) val=0x%04x\n", val); |
| |
| /* mask unwritable bits */ |
| val = SET_MASKED(val, 0xf000, s->MultiIntr); |
| |
| s->MultiIntr = val; |
| } |
| |
| static uint32_t rtl8139_MultiIntr_read(RTL8139State *s) |
| { |
| uint32_t ret = s->MultiIntr; |
| |
| DPRINTF("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; |
| |
| switch (addr) |
| { |
| case MAC0 ... MAC0+4: |
| s->phys[addr - MAC0] = val; |
| break; |
| case MAC0+5: |
| s->phys[addr - MAC0] = val; |
| qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys); |
| 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 */ |
| DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n", |
| val); |
| break; |
| |
| case HltClk: |
| DPRINTF("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: |
| DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val); |
| s->TxThresh = val; |
| break; |
| |
| case TxPoll: |
| DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val); |
| if (val & (1 << 7)) |
| { |
| DPRINTF("C+ TxPoll high priority transmission (not " |
| "implemented)\n"); |
| //rtl8139_cplus_transmit(s); |
| } |
| if (val & (1 << 6)) |
| { |
| DPRINTF("C+ TxPoll normal priority transmission\n"); |
| rtl8139_cplus_transmit(s); |
| } |
| |
| break; |
| |
| default: |
| DPRINTF("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; |
| |
| 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: |
| DPRINTF("NWayAdvert write(w) val=0x%04x\n", val); |
| s->NWayAdvert = val; |
| break; |
| case NWayLPAR: |
| DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val); |
| break; |
| case NWayExpansion: |
| DPRINTF("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: |
| DPRINTF("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_set_next_tctr_time(RTL8139State *s, int64_t current_time) |
| { |
| int64_t pci_time, next_time; |
| uint32_t low_pci; |
| |
| DPRINTF("entered rtl8139_set_next_tctr_time\n"); |
| |
| if (s->TimerExpire && current_time >= s->TimerExpire) { |
| s->IntrStatus |= PCSTimeout; |
| rtl8139_update_irq(s); |
| } |
| |
| /* Set QEMU timer only if needed that is |
| * - TimerInt <> 0 (we have a timer) |
| * - mask = 1 (we want an interrupt timer) |
| * - irq = 0 (irq is not already active) |
| * If any of above change we need to compute timer again |
| * Also we must check if timer is passed without QEMU timer |
| */ |
| s->TimerExpire = 0; |
| if (!s->TimerInt) { |
| return; |
| } |
| |
| pci_time = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY, |
| get_ticks_per_sec()); |
| low_pci = pci_time & 0xffffffff; |
| pci_time = pci_time - low_pci + s->TimerInt; |
| if (low_pci >= s->TimerInt) { |
| pci_time += 0x100000000LL; |
| } |
| next_time = s->TCTR_base + muldiv64(pci_time, get_ticks_per_sec(), |
| PCI_FREQUENCY); |
| s->TimerExpire = next_time; |
| |
| if ((s->IntrMask & PCSTimeout) != 0 && (s->IntrStatus & PCSTimeout) == 0) { |
| timer_mod(s->timer, next_time); |
| } |
| } |
| |
| static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val) |
| { |
| RTL8139State *s = opaque; |
| |
| switch (addr) |
| { |
| case RxMissed: |
| DPRINTF("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: |
| DPRINTF("C+ RxRing low bits write val=0x%08x\n", val); |
| s->RxRingAddrLO = val; |
| break; |
| |
| case RxRingAddrHI: |
| DPRINTF("C+ RxRing high bits write val=0x%08x\n", val); |
| s->RxRingAddrHI = val; |
| break; |
| |
| case Timer: |
| DPRINTF("TCTR Timer reset on write\n"); |
| s->TCTR_base = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| rtl8139_set_next_tctr_time(s, s->TCTR_base); |
| break; |
| |
| case FlashReg: |
| DPRINTF("FlashReg TimerInt write val=0x%08x\n", val); |
| if (s->TimerInt != val) { |
| s->TimerInt = val; |
| rtl8139_set_next_tctr_time(s, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); |
| } |
| break; |
| |
| default: |
| DPRINTF("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; |
| |
| 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 TxStatus0 ... TxStatus0+4*4-1: |
| ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0, |
| addr, 1); |
| 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: |
| /* The LinkDown bit of MediaStatus is inverse with link status */ |
| ret = 0xd0 | (~s->BasicModeStatus & 0x04); |
| DPRINTF("MediaStatus read 0x%x\n", ret); |
| break; |
| |
| case HltClk: |
| ret = s->clock_enabled; |
| DPRINTF("HltClk read 0x%x\n", ret); |
| break; |
| |
| case PCIRevisionID: |
| ret = RTL8139_PCI_REVID; |
| DPRINTF("PCI Revision ID read 0x%x\n", ret); |
| break; |
| |
| case TxThresh: |
| ret = s->TxThresh; |
| DPRINTF("C+ 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; |
| DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret); |
| break; |
| |
| default: |
| DPRINTF("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; |
| |
| switch (addr) |
| { |
| case TxAddr0 ... TxAddr0+4*4-1: |
| ret = rtl8139_TxStatus_TxAddr_read(s, s->TxAddr, TxAddr0, addr, 2); |
| break; |
| 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; |
| DPRINTF("NWayAdvert read(w) val=0x%04x\n" |