2 * QEMU RTL8139 emulation
4 * Copyright (c) 2006 Igor Kovalenko
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * 2006-Jan-28 Mark Malakanov : TSAD and CSCR implementation (for Windows driver)
27 * 2006-Apr-28 Juergen Lock : EEPROM emulation changes for FreeBSD driver
28 * HW revision ID changes for FreeBSD driver
30 * 2006-Jul-01 Igor Kovalenko : Implemented loopback mode for FreeBSD driver
31 * Corrected packet transfer reassembly routine for 8139C+ mode
32 * Rearranged debugging print statements
33 * Implemented PCI timer interrupt (disabled by default)
34 * Implemented Tally Counters, increased VM load/save version
35 * Implemented IP/TCP/UDP checksum task offloading
37 * 2006-Jul-04 Igor Kovalenko : Implemented TCP segmentation offloading
38 * Fixed MTU=1500 for produced ethernet frames
40 * 2006-Jul-09 Igor Kovalenko : Fixed TCP header length calculation while processing
41 * segmentation offloading
42 * Removed slirp.h dependency
43 * Added rx/tx buffer reset when enabling rx/tx operation
45 * 2010-Feb-04 Frediano Ziglio: Rewrote timer support using QEMU timer only
46 * when strictly needed (required for for
48 * 2011-Mar-22 Benjamin Poirier: Implemented VLAN offloading
56 #include "qemu-timer.h"
62 /* debug RTL8139 card */
63 //#define DEBUG_RTL8139 1
65 #define PCI_FREQUENCY 33000000L
67 /* debug RTL8139 card C+ mode only */
68 //#define DEBUG_RTL8139CP 1
70 #define SET_MASKED(input, mask, curr) \
71 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) )
73 /* arg % size for size which is a power of 2 */
74 #define MOD2(input, size) \
75 ( ( input ) & ( size - 1 ) )
77 #define ETHER_ADDR_LEN 6
78 #define ETHER_TYPE_LEN 2
79 #define ETH_HLEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
80 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
81 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
84 #define VLAN_TCI_LEN 2
85 #define VLAN_HLEN (ETHER_TYPE_LEN + VLAN_TCI_LEN)
87 #if defined (DEBUG_RTL8139)
88 # define DPRINTF(fmt, ...) \
89 do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0)
91 static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...)
97 /* Symbolic offsets to registers. */
98 enum RTL8139_registers {
99 MAC0 = 0, /* Ethernet hardware address. */
100 MAR0 = 8, /* Multicast filter. */
101 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
102 /* Dump Tally Conter control register(64bit). C+ mode only */
103 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
112 Timer = 0x48, /* A general-purpose counter. */
113 RxMissed = 0x4C, /* 24 bits valid, write clears. */
120 Config4 = 0x5A, /* absent on RTL-8139A */
123 PCIRevisionID = 0x5E,
124 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
125 BasicModeCtrl = 0x62,
126 BasicModeStatus = 0x64,
129 NWayExpansion = 0x6A,
130 /* Undocumented registers, but required for proper operation. */
131 FIFOTMS = 0x70, /* FIFO Control and test. */
132 CSCR = 0x74, /* Chip Status and Configuration Register. */
134 PARA7c = 0x7c, /* Magic transceiver parameter register. */
135 Config5 = 0xD8, /* absent on RTL-8139A */
137 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
138 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
139 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
140 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
141 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
142 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
143 TxThresh = 0xEC, /* Early Tx threshold */
147 MultiIntrClear = 0xF000,
149 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
161 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
162 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
167 /* Interrupt register bits, using my own meaningful names. */
168 enum IntrStatusBits {
179 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
186 TxOutOfWindow = 0x20000000,
187 TxAborted = 0x40000000,
188 TxCarrierLost = 0x80000000,
191 RxMulticast = 0x8000,
193 RxBroadcast = 0x2000,
194 RxBadSymbol = 0x0020,
202 /* Bits in RxConfig. */
206 AcceptBroadcast = 0x08,
207 AcceptMulticast = 0x04,
209 AcceptAllPhys = 0x01,
212 /* Bits in TxConfig. */
213 enum tx_config_bits {
215 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
217 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
218 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
219 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
220 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
222 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
223 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
224 TxClearAbt = (1 << 0), /* Clear abort (WO) */
225 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
226 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
228 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
232 /* Transmit Status of All Descriptors (TSAD) Register */
234 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
235 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
236 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
237 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
238 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
239 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
240 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
241 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
242 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
243 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
244 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
245 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
246 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
247 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
248 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
249 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
253 /* Bits in Config1 */
255 Cfg1_PM_Enable = 0x01,
256 Cfg1_VPD_Enable = 0x02,
259 LWAKE = 0x10, /* not on 8139, 8139A */
260 Cfg1_Driver_Load = 0x20,
263 SLEEP = (1 << 1), /* only on 8139, 8139A */
264 PWRDN = (1 << 0), /* only on 8139, 8139A */
267 /* Bits in Config3 */
269 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
270 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
271 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
272 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
273 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
274 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
275 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
276 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
279 /* Bits in Config4 */
281 LWPTN = (1 << 2), /* not on 8139, 8139A */
284 /* Bits in Config5 */
286 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
287 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
288 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
289 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
290 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
291 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
292 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
296 /* rx fifo threshold */
298 RxCfgFIFONone = (7 << RxCfgFIFOShift),
302 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
304 /* rx ring buffer length */
306 RxCfgRcv16K = (1 << 11),
307 RxCfgRcv32K = (1 << 12),
308 RxCfgRcv64K = (1 << 11) | (1 << 12),
310 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
314 /* Twister tuning parameters from RealTek.
315 Completely undocumented, but required to tune bad links on some boards. */
318 CSCR_LinkOKBit = 0x0400,
319 CSCR_LinkChangeBit = 0x0800,
320 CSCR_LinkStatusBits = 0x0f000,
321 CSCR_LinkDownOffCmd = 0x003c0,
322 CSCR_LinkDownCmd = 0x0f3c0,
325 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
326 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*/
327 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
328 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
329 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
330 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
331 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*/
332 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
333 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
338 Cfg9346_Unlock = 0xC0,
355 HasHltClk = (1 << 0),
359 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
360 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
361 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
363 #define RTL8139_PCI_REVID_8139 0x10
364 #define RTL8139_PCI_REVID_8139CPLUS 0x20
366 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
368 /* Size is 64 * 16bit words */
369 #define EEPROM_9346_ADDR_BITS 6
370 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
371 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
373 enum Chip9346Operation
375 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
376 Chip9346_op_read = 0x80, /* 10 AAAAAA */
377 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
378 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
379 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
380 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
381 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
387 Chip9346_enter_command_mode,
388 Chip9346_read_command,
389 Chip9346_data_read, /* from output register */
390 Chip9346_data_write, /* to input register, then to contents at specified address */
391 Chip9346_data_write_all, /* to input register, then filling contents */
394 typedef struct EEprom9346
396 uint16_t contents[EEPROM_9346_SIZE];
409 typedef struct RTL8139TallyCounters
425 } RTL8139TallyCounters;
427 /* Clears all tally counters */
428 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
430 /* Writes tally counters to specified physical memory address */
431 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* counters);
433 typedef struct RTL8139State {
435 uint8_t phys[8]; /* mac address */
436 uint8_t mult[8]; /* multicast mask array */
438 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
439 uint32_t TxAddr[4]; /* TxAddr0 */
440 uint32_t RxBuf; /* Receive buffer */
441 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
461 uint8_t clock_enabled;
462 uint8_t bChipCmdState;
466 uint16_t BasicModeCtrl;
467 uint16_t BasicModeStatus;
470 uint16_t NWayExpansion;
477 int rtl8139_mmio_io_addr;
483 uint32_t cplus_enabled;
485 uint32_t currCPlusRxDesc;
486 uint32_t currCPlusTxDesc;
488 uint32_t RxRingAddrLO;
489 uint32_t RxRingAddrHI;
498 RTL8139TallyCounters tally_counters;
500 /* Non-persistent data */
501 uint8_t *cplus_txbuffer;
502 int cplus_txbuffer_len;
503 int cplus_txbuffer_offset;
505 /* PCI interrupt timer */
509 /* Support migration to/from old versions */
510 int rtl8139_mmio_io_addr_dummy;
513 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time);
515 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
517 DPRINTF("eeprom command 0x%02x\n", command);
519 switch (command & Chip9346_op_mask)
521 case Chip9346_op_read:
523 eeprom->address = command & EEPROM_9346_ADDR_MASK;
524 eeprom->output = eeprom->contents[eeprom->address];
527 eeprom->mode = Chip9346_data_read;
528 DPRINTF("eeprom read from address 0x%02x data=0x%04x\n",
529 eeprom->address, eeprom->output);
533 case Chip9346_op_write:
535 eeprom->address = command & EEPROM_9346_ADDR_MASK;
538 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
539 DPRINTF("eeprom begin write to address 0x%02x\n",
544 eeprom->mode = Chip9346_none;
545 switch (command & Chip9346_op_ext_mask)
547 case Chip9346_op_write_enable:
548 DPRINTF("eeprom write enabled\n");
550 case Chip9346_op_write_all:
551 DPRINTF("eeprom begin write all\n");
553 case Chip9346_op_write_disable:
554 DPRINTF("eeprom write disabled\n");
561 static void prom9346_shift_clock(EEprom9346 *eeprom)
563 int bit = eeprom->eedi?1:0;
567 DPRINTF("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi,
570 switch (eeprom->mode)
572 case Chip9346_enter_command_mode:
575 eeprom->mode = Chip9346_read_command;
578 DPRINTF("eeprom: +++ synchronized, begin command read\n");
582 case Chip9346_read_command:
583 eeprom->input = (eeprom->input << 1) | (bit & 1);
584 if (eeprom->tick == 8)
586 prom9346_decode_command(eeprom, eeprom->input & 0xff);
590 case Chip9346_data_read:
591 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
592 eeprom->output <<= 1;
593 if (eeprom->tick == 16)
596 // the FreeBSD drivers (rl and re) don't explicitly toggle
597 // CS between reads (or does setting Cfg9346 to 0 count too?),
598 // so we need to enter wait-for-command state here
599 eeprom->mode = Chip9346_enter_command_mode;
603 DPRINTF("eeprom: +++ end of read, awaiting next command\n");
605 // original behaviour
607 eeprom->address &= EEPROM_9346_ADDR_MASK;
608 eeprom->output = eeprom->contents[eeprom->address];
611 DPRINTF("eeprom: +++ read next address 0x%02x data=0x%04x\n",
612 eeprom->address, eeprom->output);
617 case Chip9346_data_write:
618 eeprom->input = (eeprom->input << 1) | (bit & 1);
619 if (eeprom->tick == 16)
621 DPRINTF("eeprom write to address 0x%02x data=0x%04x\n",
622 eeprom->address, eeprom->input);
624 eeprom->contents[eeprom->address] = eeprom->input;
625 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
631 case Chip9346_data_write_all:
632 eeprom->input = (eeprom->input << 1) | (bit & 1);
633 if (eeprom->tick == 16)
636 for (i = 0; i < EEPROM_9346_SIZE; i++)
638 eeprom->contents[i] = eeprom->input;
640 DPRINTF("eeprom filled with data=0x%04x\n", eeprom->input);
642 eeprom->mode = Chip9346_enter_command_mode;
653 static int prom9346_get_wire(RTL8139State *s)
655 EEprom9346 *eeprom = &s->eeprom;
662 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
663 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
665 EEprom9346 *eeprom = &s->eeprom;
666 uint8_t old_eecs = eeprom->eecs;
667 uint8_t old_eesk = eeprom->eesk;
673 DPRINTF("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs,
674 eeprom->eesk, eeprom->eedi, eeprom->eedo);
676 if (!old_eecs && eecs)
678 /* Synchronize start */
682 eeprom->mode = Chip9346_enter_command_mode;
684 DPRINTF("=== eeprom: begin access, enter command mode\n");
689 DPRINTF("=== eeprom: end access\n");
693 if (!old_eesk && eesk)
696 prom9346_shift_clock(eeprom);
700 static void rtl8139_update_irq(RTL8139State *s)
703 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
705 DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus,
708 qemu_set_irq(s->dev.irq[0], (isr != 0));
711 #define POLYNOMIAL 0x04c11db6
715 static int compute_mcast_idx(const uint8_t *ep)
722 for (i = 0; i < 6; i++) {
724 for (j = 0; j < 8; j++) {
725 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
729 crc = ((crc ^ POLYNOMIAL) | carry);
735 static int rtl8139_RxWrap(RTL8139State *s)
737 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
738 return (s->RxConfig & (1 << 7));
741 static int rtl8139_receiver_enabled(RTL8139State *s)
743 return s->bChipCmdState & CmdRxEnb;
746 static int rtl8139_transmitter_enabled(RTL8139State *s)
748 return s->bChipCmdState & CmdTxEnb;
751 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
753 return s->CpCmd & CPlusRxEnb;
756 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
758 return s->CpCmd & CPlusTxEnb;
761 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
763 if (s->RxBufAddr + size > s->RxBufferSize)
765 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
767 /* write packet data */
768 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
770 DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped);
774 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
778 /* reset buffer pointer */
781 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
782 buf + (size-wrapped), wrapped );
784 s->RxBufAddr = wrapped;
790 /* non-wrapping path or overwrapping enabled */
791 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
793 s->RxBufAddr += size;
796 #define MIN_BUF_SIZE 60
797 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
799 #if TARGET_PHYS_ADDR_BITS > 32
800 return low | ((target_phys_addr_t)high << 32);
806 static int rtl8139_can_receive(VLANClientState *nc)
808 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
811 /* Receive (drop) packets if card is disabled. */
812 if (!s->clock_enabled)
814 if (!rtl8139_receiver_enabled(s))
817 if (rtl8139_cp_receiver_enabled(s)) {
818 /* ??? Flow control not implemented in c+ mode.
819 This is a hack to work around slirp deficiencies anyway. */
822 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
824 return (avail == 0 || avail >= 1514);
828 static ssize_t rtl8139_do_receive(VLANClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt)
830 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
831 /* size is the length of the buffer passed to the driver */
833 const uint8_t *dot1q_buf = NULL;
835 uint32_t packet_header = 0;
837 uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
838 static const uint8_t broadcast_macaddr[6] =
839 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
841 DPRINTF(">>> received len=%d\n", size);
843 /* test if board clock is stopped */
844 if (!s->clock_enabled)
846 DPRINTF("stopped ==========================\n");
850 /* first check if receiver is enabled */
852 if (!rtl8139_receiver_enabled(s))
854 DPRINTF("receiver disabled ================\n");
858 /* XXX: check this */
859 if (s->RxConfig & AcceptAllPhys) {
860 /* promiscuous: receive all */
861 DPRINTF(">>> packet received in promiscuous mode\n");
864 if (!memcmp(buf, broadcast_macaddr, 6)) {
865 /* broadcast address */
866 if (!(s->RxConfig & AcceptBroadcast))
868 DPRINTF(">>> broadcast packet rejected\n");
870 /* update tally counter */
871 ++s->tally_counters.RxERR;
876 packet_header |= RxBroadcast;
878 DPRINTF(">>> broadcast packet received\n");
880 /* update tally counter */
881 ++s->tally_counters.RxOkBrd;
883 } else if (buf[0] & 0x01) {
885 if (!(s->RxConfig & AcceptMulticast))
887 DPRINTF(">>> multicast packet rejected\n");
889 /* update tally counter */
890 ++s->tally_counters.RxERR;
895 int mcast_idx = compute_mcast_idx(buf);
897 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
899 DPRINTF(">>> multicast address mismatch\n");
901 /* update tally counter */
902 ++s->tally_counters.RxERR;
907 packet_header |= RxMulticast;
909 DPRINTF(">>> multicast packet received\n");
911 /* update tally counter */
912 ++s->tally_counters.RxOkMul;
914 } else if (s->phys[0] == buf[0] &&
915 s->phys[1] == buf[1] &&
916 s->phys[2] == buf[2] &&
917 s->phys[3] == buf[3] &&
918 s->phys[4] == buf[4] &&
919 s->phys[5] == buf[5]) {
921 if (!(s->RxConfig & AcceptMyPhys))
923 DPRINTF(">>> rejecting physical address matching packet\n");
925 /* update tally counter */
926 ++s->tally_counters.RxERR;
931 packet_header |= RxPhysical;
933 DPRINTF(">>> physical address matching packet received\n");
935 /* update tally counter */
936 ++s->tally_counters.RxOkPhy;
940 DPRINTF(">>> unknown packet\n");
942 /* update tally counter */
943 ++s->tally_counters.RxERR;
949 /* if too small buffer, then expand it
950 * Include some tailroom in case a vlan tag is later removed. */
951 if (size < MIN_BUF_SIZE + VLAN_HLEN) {
952 memcpy(buf1, buf, size);
953 memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
955 if (size < MIN_BUF_SIZE) {
960 if (rtl8139_cp_receiver_enabled(s))
962 DPRINTF("in C+ Rx mode ================\n");
964 /* begin C+ receiver mode */
966 /* w0 ownership flag */
967 #define CP_RX_OWN (1<<31)
968 /* w0 end of ring flag */
969 #define CP_RX_EOR (1<<30)
970 /* w0 bits 0...12 : buffer size */
971 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
972 /* w1 tag available flag */
973 #define CP_RX_TAVA (1<<16)
974 /* w1 bits 0...15 : VLAN tag */
975 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
976 /* w2 low 32bit of Rx buffer ptr */
977 /* w3 high 32bit of Rx buffer ptr */
979 int descriptor = s->currCPlusRxDesc;
980 target_phys_addr_t cplus_rx_ring_desc;
982 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
983 cplus_rx_ring_desc += 16 * descriptor;
985 DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at "
986 "%08x %08x = "TARGET_FMT_plx"\n", descriptor, s->RxRingAddrHI,
987 s->RxRingAddrLO, cplus_rx_ring_desc);
989 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
991 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
992 rxdw0 = le32_to_cpu(val);
993 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
994 rxdw1 = le32_to_cpu(val);
995 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
996 rxbufLO = le32_to_cpu(val);
997 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
998 rxbufHI = le32_to_cpu(val);
1000 DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
1001 descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI);
1003 if (!(rxdw0 & CP_RX_OWN))
1005 DPRINTF("C+ Rx mode : descriptor %d is owned by host\n",
1008 s->IntrStatus |= RxOverflow;
1011 /* update tally counter */
1012 ++s->tally_counters.RxERR;
1013 ++s->tally_counters.MissPkt;
1015 rtl8139_update_irq(s);
1019 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1021 /* write VLAN info to descriptor variables. */
1022 if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *)
1023 &buf[ETHER_ADDR_LEN * 2]) == ETH_P_8021Q) {
1024 dot1q_buf = &buf[ETHER_ADDR_LEN * 2];
1026 /* if too small buffer, use the tailroom added duing expansion */
1027 if (size < MIN_BUF_SIZE) {
1028 size = MIN_BUF_SIZE;
1031 rxdw1 &= ~CP_RX_VLAN_TAG_MASK;
1032 /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */
1033 rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *)
1034 &dot1q_buf[ETHER_TYPE_LEN]);
1036 DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n",
1037 be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN]));
1039 /* reset VLAN tag flag */
1040 rxdw1 &= ~CP_RX_TAVA;
1043 /* TODO: scatter the packet over available receive ring descriptors space */
1045 if (size+4 > rx_space)
1047 DPRINTF("C+ Rx mode : descriptor %d size %d received %d + 4\n",
1048 descriptor, rx_space, size);
1050 s->IntrStatus |= RxOverflow;
1053 /* update tally counter */
1054 ++s->tally_counters.RxERR;
1055 ++s->tally_counters.MissPkt;
1057 rtl8139_update_irq(s);
1061 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1063 /* receive/copy to target memory */
1065 cpu_physical_memory_write(rx_addr, buf, 2 * ETHER_ADDR_LEN);
1066 cpu_physical_memory_write(rx_addr + 2 * ETHER_ADDR_LEN,
1067 buf + 2 * ETHER_ADDR_LEN + VLAN_HLEN,
1068 size - 2 * ETHER_ADDR_LEN);
1070 cpu_physical_memory_write(rx_addr, buf, size);
1073 if (s->CpCmd & CPlusRxChkSum)
1075 /* do some packet checksumming */
1078 /* write checksum */
1079 val = cpu_to_le32(crc32(0, buf, size_));
1080 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1082 /* first segment of received packet flag */
1083 #define CP_RX_STATUS_FS (1<<29)
1084 /* last segment of received packet flag */
1085 #define CP_RX_STATUS_LS (1<<28)
1086 /* multicast packet flag */
1087 #define CP_RX_STATUS_MAR (1<<26)
1088 /* physical-matching packet flag */
1089 #define CP_RX_STATUS_PAM (1<<25)
1090 /* broadcast packet flag */
1091 #define CP_RX_STATUS_BAR (1<<24)
1092 /* runt packet flag */
1093 #define CP_RX_STATUS_RUNT (1<<19)
1094 /* crc error flag */
1095 #define CP_RX_STATUS_CRC (1<<18)
1096 /* IP checksum error flag */
1097 #define CP_RX_STATUS_IPF (1<<15)
1098 /* UDP checksum error flag */
1099 #define CP_RX_STATUS_UDPF (1<<14)
1100 /* TCP checksum error flag */
1101 #define CP_RX_STATUS_TCPF (1<<13)
1103 /* transfer ownership to target */
1104 rxdw0 &= ~CP_RX_OWN;
1106 /* set first segment bit */
1107 rxdw0 |= CP_RX_STATUS_FS;
1109 /* set last segment bit */
1110 rxdw0 |= CP_RX_STATUS_LS;
1112 /* set received packet type flags */
1113 if (packet_header & RxBroadcast)
1114 rxdw0 |= CP_RX_STATUS_BAR;
1115 if (packet_header & RxMulticast)
1116 rxdw0 |= CP_RX_STATUS_MAR;
1117 if (packet_header & RxPhysical)
1118 rxdw0 |= CP_RX_STATUS_PAM;
1120 /* set received size */
1121 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1124 /* update ring data */
1125 val = cpu_to_le32(rxdw0);
1126 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1127 val = cpu_to_le32(rxdw1);
1128 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1130 /* update tally counter */
1131 ++s->tally_counters.RxOk;
1133 /* seek to next Rx descriptor */
1134 if (rxdw0 & CP_RX_EOR)
1136 s->currCPlusRxDesc = 0;
1140 ++s->currCPlusRxDesc;
1143 DPRINTF("done C+ Rx mode ----------------\n");
1148 DPRINTF("in ring Rx mode ================\n");
1150 /* begin ring receiver mode */
1151 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1153 /* if receiver buffer is empty then avail == 0 */
1155 if (avail != 0 && size + 8 >= avail)
1157 DPRINTF("rx overflow: rx buffer length %d head 0x%04x "
1158 "read 0x%04x === available 0x%04x need 0x%04x\n",
1159 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8);
1161 s->IntrStatus |= RxOverflow;
1163 rtl8139_update_irq(s);
1167 packet_header |= RxStatusOK;
1169 packet_header |= (((size+4) << 16) & 0xffff0000);
1172 uint32_t val = cpu_to_le32(packet_header);
1174 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1176 rtl8139_write_buffer(s, buf, size);
1178 /* write checksum */
1179 val = cpu_to_le32(crc32(0, buf, size));
1180 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1182 /* correct buffer write pointer */
1183 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1185 /* now we can signal we have received something */
1187 DPRINTF("received: rx buffer length %d head 0x%04x read 0x%04x\n",
1188 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
1191 s->IntrStatus |= RxOK;
1195 rtl8139_update_irq(s);
1201 static ssize_t rtl8139_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
1203 return rtl8139_do_receive(nc, buf, size, 1);
1206 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1208 s->RxBufferSize = bufferSize;
1213 static void rtl8139_reset(DeviceState *d)
1215 RTL8139State *s = container_of(d, RTL8139State, dev.qdev);
1218 /* restore MAC address */
1219 memcpy(s->phys, s->conf.macaddr.a, 6);
1221 /* reset interrupt mask */
1225 rtl8139_update_irq(s);
1227 /* mark all status registers as owned by host */
1228 for (i = 0; i < 4; ++i)
1230 s->TxStatus[i] = TxHostOwns;
1234 s->currCPlusRxDesc = 0;
1235 s->currCPlusTxDesc = 0;
1237 s->RxRingAddrLO = 0;
1238 s->RxRingAddrHI = 0;
1242 rtl8139_reset_rxring(s, 8192);
1248 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1249 s->clock_enabled = 0;
1251 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1252 s->clock_enabled = 1;
1255 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1257 /* set initial state data */
1258 s->Config0 = 0x0; /* No boot ROM */
1259 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1260 s->Config3 = 0x1; /* fast back-to-back compatible */
1263 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1265 s->CpCmd = 0x0; /* reset C+ mode */
1266 s->cplus_enabled = 0;
1269 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1270 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1271 s->BasicModeCtrl = 0x1000; // autonegotiation
1273 s->BasicModeStatus = 0x7809;
1274 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1275 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1276 s->BasicModeStatus |= 0x0004; /* link is up */
1278 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1279 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1280 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1282 /* also reset timer and disable timer interrupt */
1287 /* reset tally counters */
1288 RTL8139TallyCounters_clear(&s->tally_counters);
1291 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1295 counters->TxERR = 0;
1296 counters->RxERR = 0;
1297 counters->MissPkt = 0;
1299 counters->Tx1Col = 0;
1300 counters->TxMCol = 0;
1301 counters->RxOkPhy = 0;
1302 counters->RxOkBrd = 0;
1303 counters->RxOkMul = 0;
1304 counters->TxAbt = 0;
1305 counters->TxUndrn = 0;
1308 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1314 val64 = cpu_to_le64(tally_counters->TxOk);
1315 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1317 val64 = cpu_to_le64(tally_counters->RxOk);
1318 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1320 val64 = cpu_to_le64(tally_counters->TxERR);
1321 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1323 val32 = cpu_to_le32(tally_counters->RxERR);
1324 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1326 val16 = cpu_to_le16(tally_counters->MissPkt);
1327 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1329 val16 = cpu_to_le16(tally_counters->FAE);
1330 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1332 val32 = cpu_to_le32(tally_counters->Tx1Col);
1333 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1335 val32 = cpu_to_le32(tally_counters->TxMCol);
1336 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1338 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1339 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1341 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1342 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1344 val32 = cpu_to_le32(tally_counters->RxOkMul);
1345 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1347 val16 = cpu_to_le16(tally_counters->TxAbt);
1348 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1350 val16 = cpu_to_le16(tally_counters->TxUndrn);
1351 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1354 /* Loads values of tally counters from VM state file */
1356 static const VMStateDescription vmstate_tally_counters = {
1357 .name = "tally_counters",
1359 .minimum_version_id = 1,
1360 .minimum_version_id_old = 1,
1361 .fields = (VMStateField []) {
1362 VMSTATE_UINT64(TxOk, RTL8139TallyCounters),
1363 VMSTATE_UINT64(RxOk, RTL8139TallyCounters),
1364 VMSTATE_UINT64(TxERR, RTL8139TallyCounters),
1365 VMSTATE_UINT32(RxERR, RTL8139TallyCounters),
1366 VMSTATE_UINT16(MissPkt, RTL8139TallyCounters),
1367 VMSTATE_UINT16(FAE, RTL8139TallyCounters),
1368 VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters),
1369 VMSTATE_UINT32(TxMCol, RTL8139TallyCounters),
1370 VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters),
1371 VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters),
1372 VMSTATE_UINT16(TxAbt, RTL8139TallyCounters),
1373 VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters),
1374 VMSTATE_END_OF_LIST()
1378 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1382 DPRINTF("ChipCmd write val=0x%08x\n", val);
1386 DPRINTF("ChipCmd reset\n");
1387 rtl8139_reset(&s->dev.qdev);
1391 DPRINTF("ChipCmd enable receiver\n");
1393 s->currCPlusRxDesc = 0;
1397 DPRINTF("ChipCmd enable transmitter\n");
1399 s->currCPlusTxDesc = 0;
1402 /* mask unwritable bits */
1403 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1405 /* Deassert reset pin before next read */
1408 s->bChipCmdState = val;
1411 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1413 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1417 DPRINTF("receiver buffer data available 0x%04x\n", unread);
1421 DPRINTF("receiver buffer is empty\n");
1426 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1428 uint32_t ret = s->bChipCmdState;
1430 if (rtl8139_RxBufferEmpty(s))
1433 DPRINTF("ChipCmd read val=0x%04x\n", ret);
1438 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1442 DPRINTF("C+ command register write(w) val=0x%04x\n", val);
1444 s->cplus_enabled = 1;
1446 /* mask unwritable bits */
1447 val = SET_MASKED(val, 0xff84, s->CpCmd);
1452 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1454 uint32_t ret = s->CpCmd;
1456 DPRINTF("C+ command register read(w) val=0x%04x\n", ret);
1461 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1463 DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val);
1466 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1470 DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret);
1475 static int rtl8139_config_writable(RTL8139State *s)
1477 if (s->Cfg9346 & Cfg9346_Unlock)
1482 DPRINTF("Configuration registers are write-protected\n");
1487 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1491 DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val);
1493 /* mask unwritable bits */
1494 uint32_t mask = 0x4cff;
1496 if (1 || !rtl8139_config_writable(s))
1498 /* Speed setting and autonegotiation enable bits are read-only */
1500 /* Duplex mode setting is read-only */
1504 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1506 s->BasicModeCtrl = val;
1509 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1511 uint32_t ret = s->BasicModeCtrl;
1513 DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret);
1518 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1522 DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val);
1524 /* mask unwritable bits */
1525 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1527 s->BasicModeStatus = val;
1530 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1532 uint32_t ret = s->BasicModeStatus;
1534 DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret);
1539 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1543 DPRINTF("Cfg9346 write val=0x%02x\n", val);
1545 /* mask unwritable bits */
1546 val = SET_MASKED(val, 0x31, s->Cfg9346);
1548 uint32_t opmode = val & 0xc0;
1549 uint32_t eeprom_val = val & 0xf;
1551 if (opmode == 0x80) {
1553 int eecs = (eeprom_val & 0x08)?1:0;
1554 int eesk = (eeprom_val & 0x04)?1:0;
1555 int eedi = (eeprom_val & 0x02)?1:0;
1556 prom9346_set_wire(s, eecs, eesk, eedi);
1557 } else if (opmode == 0x40) {
1560 rtl8139_reset(&s->dev.qdev);
1566 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1568 uint32_t ret = s->Cfg9346;
1570 uint32_t opmode = ret & 0xc0;
1575 int eedo = prom9346_get_wire(s);
1586 DPRINTF("Cfg9346 read val=0x%02x\n", ret);
1591 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1595 DPRINTF("Config0 write val=0x%02x\n", val);
1597 if (!rtl8139_config_writable(s)) {
1601 /* mask unwritable bits */
1602 val = SET_MASKED(val, 0xf8, s->Config0);
1607 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1609 uint32_t ret = s->Config0;
1611 DPRINTF("Config0 read val=0x%02x\n", ret);
1616 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1620 DPRINTF("Config1 write val=0x%02x\n", val);
1622 if (!rtl8139_config_writable(s)) {
1626 /* mask unwritable bits */
1627 val = SET_MASKED(val, 0xC, s->Config1);
1632 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1634 uint32_t ret = s->Config1;
1636 DPRINTF("Config1 read val=0x%02x\n", ret);
1641 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1645 DPRINTF("Config3 write val=0x%02x\n", val);
1647 if (!rtl8139_config_writable(s)) {
1651 /* mask unwritable bits */
1652 val = SET_MASKED(val, 0x8F, s->Config3);
1657 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1659 uint32_t ret = s->Config3;
1661 DPRINTF("Config3 read val=0x%02x\n", ret);
1666 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1670 DPRINTF("Config4 write val=0x%02x\n", val);
1672 if (!rtl8139_config_writable(s)) {
1676 /* mask unwritable bits */
1677 val = SET_MASKED(val, 0x0a, s->Config4);
1682 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1684 uint32_t ret = s->Config4;
1686 DPRINTF("Config4 read val=0x%02x\n", ret);
1691 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1695 DPRINTF("Config5 write val=0x%02x\n", val);
1697 /* mask unwritable bits */
1698 val = SET_MASKED(val, 0x80, s->Config5);
1703 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1705 uint32_t ret = s->Config5;
1707 DPRINTF("Config5 read val=0x%02x\n", ret);
1712 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1714 if (!rtl8139_transmitter_enabled(s))
1716 DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val);
1720 DPRINTF("TxConfig write val=0x%08x\n", val);
1722 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1727 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1729 DPRINTF("RTL8139C TxConfig via write(b) val=0x%02x\n", val);
1731 uint32_t tc = s->TxConfig;
1733 tc |= (val & 0x000000FF);
1734 rtl8139_TxConfig_write(s, tc);
1737 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1739 uint32_t ret = s->TxConfig;
1741 DPRINTF("TxConfig read val=0x%04x\n", ret);
1746 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1748 DPRINTF("RxConfig write val=0x%08x\n", val);
1750 /* mask unwritable bits */
1751 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1755 /* reset buffer size and read/write pointers */
1756 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1758 DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize);
1761 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1763 uint32_t ret = s->RxConfig;
1765 DPRINTF("RxConfig read val=0x%08x\n", ret);
1770 static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
1771 int do_interrupt, const uint8_t *dot1q_buf)
1773 struct iovec *iov = NULL;
1777 DPRINTF("+++ empty ethernet frame\n");
1781 if (dot1q_buf && size >= ETHER_ADDR_LEN * 2) {
1782 iov = (struct iovec[3]) {
1783 { .iov_base = buf, .iov_len = ETHER_ADDR_LEN * 2 },
1784 { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN },
1785 { .iov_base = buf + ETHER_ADDR_LEN * 2,
1786 .iov_len = size - ETHER_ADDR_LEN * 2 },
1790 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1796 buf2_size = iov_size(iov, 3);
1797 buf2 = qemu_malloc(buf2_size);
1798 iov_to_buf(iov, 3, buf2, 0, buf2_size);
1802 DPRINTF("+++ transmit loopback mode\n");
1803 rtl8139_do_receive(&s->nic->nc, buf, size, do_interrupt);
1812 qemu_sendv_packet(&s->nic->nc, iov, 3);
1814 qemu_send_packet(&s->nic->nc, buf, size);
1819 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1821 if (!rtl8139_transmitter_enabled(s))
1823 DPRINTF("+++ cannot transmit from descriptor %d: transmitter "
1824 "disabled\n", descriptor);
1828 if (s->TxStatus[descriptor] & TxHostOwns)
1830 DPRINTF("+++ cannot transmit from descriptor %d: owned by host "
1831 "(%08x)\n", descriptor, s->TxStatus[descriptor]);
1835 DPRINTF("+++ transmitting from descriptor %d\n", descriptor);
1837 int txsize = s->TxStatus[descriptor] & 0x1fff;
1838 uint8_t txbuffer[0x2000];
1840 DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n",
1841 txsize, s->TxAddr[descriptor]);
1843 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1845 /* Mark descriptor as transferred */
1846 s->TxStatus[descriptor] |= TxHostOwns;
1847 s->TxStatus[descriptor] |= TxStatOK;
1849 rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL);
1851 DPRINTF("+++ transmitted %d bytes from descriptor %d\n", txsize,
1854 /* update interrupt */
1855 s->IntrStatus |= TxOK;
1856 rtl8139_update_irq(s);
1861 /* structures and macros for task offloading */
1862 typedef struct ip_header
1864 uint8_t ip_ver_len; /* version and header length */
1865 uint8_t ip_tos; /* type of service */
1866 uint16_t ip_len; /* total length */
1867 uint16_t ip_id; /* identification */
1868 uint16_t ip_off; /* fragment offset field */
1869 uint8_t ip_ttl; /* time to live */
1870 uint8_t ip_p; /* protocol */
1871 uint16_t ip_sum; /* checksum */
1872 uint32_t ip_src,ip_dst; /* source and dest address */
1875 #define IP_HEADER_VERSION_4 4
1876 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1877 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1879 typedef struct tcp_header
1881 uint16_t th_sport; /* source port */
1882 uint16_t th_dport; /* destination port */
1883 uint32_t th_seq; /* sequence number */
1884 uint32_t th_ack; /* acknowledgement number */
1885 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1886 uint16_t th_win; /* window */
1887 uint16_t th_sum; /* checksum */
1888 uint16_t th_urp; /* urgent pointer */
1891 typedef struct udp_header
1893 uint16_t uh_sport; /* source port */
1894 uint16_t uh_dport; /* destination port */
1895 uint16_t uh_ulen; /* udp length */
1896 uint16_t uh_sum; /* udp checksum */
1899 typedef struct ip_pseudo_header
1905 uint16_t ip_payload;
1908 #define IP_PROTO_TCP 6
1909 #define IP_PROTO_UDP 17
1911 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1912 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1913 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1915 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1917 #define TCP_FLAG_FIN 0x01
1918 #define TCP_FLAG_PUSH 0x08
1920 /* produces ones' complement sum of data */
1921 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1923 uint32_t result = 0;
1925 for (; len > 1; data+=2, len-=2)
1927 result += *(uint16_t*)data;
1930 /* add the remainder byte */
1933 uint8_t odd[2] = {*data, 0};
1934 result += *(uint16_t*)odd;
1938 result = (result & 0xffff) + (result >> 16);
1943 static uint16_t ip_checksum(void *data, size_t len)
1945 return ~ones_complement_sum((uint8_t*)data, len);
1948 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1950 if (!rtl8139_transmitter_enabled(s))
1952 DPRINTF("+++ C+ mode: transmitter disabled\n");
1956 if (!rtl8139_cp_transmitter_enabled(s))
1958 DPRINTF("+++ C+ mode: C+ transmitter disabled\n");
1962 int descriptor = s->currCPlusTxDesc;
1964 target_phys_addr_t cplus_tx_ring_desc =
1965 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1967 /* Normal priority ring */
1968 cplus_tx_ring_desc += 16 * descriptor;
1970 DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at "
1971 "%08x0x%08x = 0x"TARGET_FMT_plx"\n", descriptor, s->TxAddr[1],
1972 s->TxAddr[0], cplus_tx_ring_desc);
1974 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1976 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1977 txdw0 = le32_to_cpu(val);
1978 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1979 txdw1 = le32_to_cpu(val);
1980 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1981 txbufLO = le32_to_cpu(val);
1982 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1983 txbufHI = le32_to_cpu(val);
1985 DPRINTF("+++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor,
1986 txdw0, txdw1, txbufLO, txbufHI);
1988 /* w0 ownership flag */
1989 #define CP_TX_OWN (1<<31)
1990 /* w0 end of ring flag */
1991 #define CP_TX_EOR (1<<30)
1992 /* first segment of received packet flag */
1993 #define CP_TX_FS (1<<29)
1994 /* last segment of received packet flag */
1995 #define CP_TX_LS (1<<28)
1996 /* large send packet flag */
1997 #define CP_TX_LGSEN (1<<27)
1998 /* large send MSS mask, bits 16...25 */
1999 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
2001 /* IP checksum offload flag */
2002 #define CP_TX_IPCS (1<<18)
2003 /* UDP checksum offload flag */
2004 #define CP_TX_UDPCS (1<<17)
2005 /* TCP checksum offload flag */
2006 #define CP_TX_TCPCS (1<<16)
2008 /* w0 bits 0...15 : buffer size */
2009 #define CP_TX_BUFFER_SIZE (1<<16)
2010 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
2011 /* w1 add tag flag */
2012 #define CP_TX_TAGC (1<<17)
2013 /* w1 bits 0...15 : VLAN tag (big endian) */
2014 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
2015 /* w2 low 32bit of Rx buffer ptr */
2016 /* w3 high 32bit of Rx buffer ptr */
2018 /* set after transmission */
2019 /* FIFO underrun flag */
2020 #define CP_TX_STATUS_UNF (1<<25)
2021 /* transmit error summary flag, valid if set any of three below */
2022 #define CP_TX_STATUS_TES (1<<23)
2023 /* out-of-window collision flag */
2024 #define CP_TX_STATUS_OWC (1<<22)
2025 /* link failure flag */
2026 #define CP_TX_STATUS_LNKF (1<<21)
2027 /* excessive collisions flag */
2028 #define CP_TX_STATUS_EXC (1<<20)
2030 if (!(txdw0 & CP_TX_OWN))
2032 DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor);
2036 DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor);
2038 if (txdw0 & CP_TX_FS)
2040 DPRINTF("+++ C+ Tx mode : descriptor %d is first segment "
2041 "descriptor\n", descriptor);
2043 /* reset internal buffer offset */
2044 s->cplus_txbuffer_offset = 0;
2047 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
2048 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
2050 /* make sure we have enough space to assemble the packet */
2051 if (!s->cplus_txbuffer)
2053 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2054 s->cplus_txbuffer = qemu_malloc(s->cplus_txbuffer_len);
2055 s->cplus_txbuffer_offset = 0;
2057 DPRINTF("+++ C+ mode transmission buffer allocated space %d\n",
2058 s->cplus_txbuffer_len);
2061 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2063 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2064 s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2066 DPRINTF("+++ C+ mode transmission buffer space changed to %d\n",
2067 s->cplus_txbuffer_len);
2070 if (!s->cplus_txbuffer)
2074 DPRINTF("+++ C+ mode transmiter failed to reallocate %d bytes\n",
2075 s->cplus_txbuffer_len);
2077 /* update tally counter */
2078 ++s->tally_counters.TxERR;
2079 ++s->tally_counters.TxAbt;
2084 /* append more data to the packet */
2086 DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at "
2087 TARGET_FMT_plx" to offset %d\n", txsize, tx_addr,
2088 s->cplus_txbuffer_offset);
2090 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2091 s->cplus_txbuffer_offset += txsize;
2093 /* seek to next Rx descriptor */
2094 if (txdw0 & CP_TX_EOR)
2096 s->currCPlusTxDesc = 0;
2100 ++s->currCPlusTxDesc;
2101 if (s->currCPlusTxDesc >= 64)
2102 s->currCPlusTxDesc = 0;
2105 /* transfer ownership to target */
2106 txdw0 &= ~CP_RX_OWN;
2108 /* reset error indicator bits */
2109 txdw0 &= ~CP_TX_STATUS_UNF;
2110 txdw0 &= ~CP_TX_STATUS_TES;
2111 txdw0 &= ~CP_TX_STATUS_OWC;
2112 txdw0 &= ~CP_TX_STATUS_LNKF;
2113 txdw0 &= ~CP_TX_STATUS_EXC;
2115 /* update ring data */
2116 val = cpu_to_le32(txdw0);
2117 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2119 /* Now decide if descriptor being processed is holding the last segment of packet */
2120 if (txdw0 & CP_TX_LS)
2122 uint8_t dot1q_buffer_space[VLAN_HLEN];
2123 uint16_t *dot1q_buffer;
2125 DPRINTF("+++ C+ Tx mode : descriptor %d is last segment descriptor\n",
2128 /* can transfer fully assembled packet */
2130 uint8_t *saved_buffer = s->cplus_txbuffer;
2131 int saved_size = s->cplus_txbuffer_offset;
2132 int saved_buffer_len = s->cplus_txbuffer_len;
2134 /* create vlan tag */
2135 if (txdw1 & CP_TX_TAGC) {
2136 /* the vlan tag is in BE byte order in the descriptor
2137 * BE + le_to_cpu() + ~swap()~ = cpu */
2138 DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n",
2139 bswap16(txdw1 & CP_TX_VLAN_TAG_MASK));
2141 dot1q_buffer = (uint16_t *) dot1q_buffer_space;
2142 dot1q_buffer[0] = cpu_to_be16(ETH_P_8021Q);
2143 /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */
2144 dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK);
2146 dot1q_buffer = NULL;
2149 /* reset the card space to protect from recursive call */
2150 s->cplus_txbuffer = NULL;
2151 s->cplus_txbuffer_offset = 0;
2152 s->cplus_txbuffer_len = 0;
2154 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2156 DPRINTF("+++ C+ mode offloaded task checksum\n");
2158 /* ip packet header */
2159 ip_header *ip = NULL;
2161 uint8_t ip_protocol = 0;
2162 uint16_t ip_data_len = 0;
2164 uint8_t *eth_payload_data = NULL;
2165 size_t eth_payload_len = 0;
2167 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2168 if (proto == ETH_P_IP)
2170 DPRINTF("+++ C+ mode has IP packet\n");
2173 eth_payload_data = saved_buffer + ETH_HLEN;
2174 eth_payload_len = saved_size - ETH_HLEN;
2176 ip = (ip_header*)eth_payload_data;
2178 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2179 DPRINTF("+++ C+ mode packet has bad IP version %d "
2180 "expected %d\n", IP_HEADER_VERSION(ip),
2181 IP_HEADER_VERSION_4);
2184 hlen = IP_HEADER_LENGTH(ip);
2185 ip_protocol = ip->ip_p;
2186 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2192 if (txdw0 & CP_TX_IPCS)
2194 DPRINTF("+++ C+ mode need IP checksum\n");
2196 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2197 /* bad packet header len */
2198 /* or packet too short */
2203 ip->ip_sum = ip_checksum(ip, hlen);
2204 DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n",
2209 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2211 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2213 DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d "
2214 "frame data %d specified MSS=%d\n", ETH_MTU,
2215 ip_data_len, saved_size - ETH_HLEN, large_send_mss);
2217 int tcp_send_offset = 0;
2220 /* maximum IP header length is 60 bytes */
2221 uint8_t saved_ip_header[60];
2223 /* save IP header template; data area is used in tcp checksum calculation */
2224 memcpy(saved_ip_header, eth_payload_data, hlen);
2226 /* a placeholder for checksum calculation routine in tcp case */
2227 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2228 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2230 /* pointer to TCP header */
2231 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2233 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2235 /* ETH_MTU = ip header len + tcp header len + payload */
2236 int tcp_data_len = ip_data_len - tcp_hlen;
2237 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2239 DPRINTF("+++ C+ mode TSO IP data len %d TCP hlen %d TCP "
2240 "data len %d TCP chunk size %d\n", ip_data_len,
2241 tcp_hlen, tcp_data_len, tcp_chunk_size);
2243 /* note the cycle below overwrites IP header data,
2244 but restores it from saved_ip_header before sending packet */
2246 int is_last_frame = 0;
2248 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2250 uint16_t chunk_size = tcp_chunk_size;
2252 /* check if this is the last frame */
2253 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2256 chunk_size = tcp_data_len - tcp_send_offset;
2259 DPRINTF("+++ C+ mode TSO TCP seqno %08x\n",
2260 be32_to_cpu(p_tcp_hdr->th_seq));
2262 /* add 4 TCP pseudoheader fields */
2263 /* copy IP source and destination fields */
2264 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2266 DPRINTF("+++ C+ mode TSO calculating TCP checksum for "
2267 "packet with %d bytes data\n", tcp_hlen +
2270 if (tcp_send_offset)
2272 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2275 /* keep PUSH and FIN flags only for the last frame */
2278 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2281 /* recalculate TCP checksum */
2282 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2283 p_tcpip_hdr->zeros = 0;
2284 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2285 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2287 p_tcp_hdr->th_sum = 0;
2289 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2290 DPRINTF("+++ C+ mode TSO TCP checksum %04x\n",
2293 p_tcp_hdr->th_sum = tcp_checksum;
2295 /* restore IP header */
2296 memcpy(eth_payload_data, saved_ip_header, hlen);
2298 /* set IP data length and recalculate IP checksum */
2299 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2301 /* increment IP id for subsequent frames */
2302 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2305 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2306 DPRINTF("+++ C+ mode TSO IP header len=%d "
2307 "checksum=%04x\n", hlen, ip->ip_sum);
2309 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2310 DPRINTF("+++ C+ mode TSO transferring packet size "
2311 "%d\n", tso_send_size);
2312 rtl8139_transfer_frame(s, saved_buffer, tso_send_size,
2313 0, (uint8_t *) dot1q_buffer);
2315 /* add transferred count to TCP sequence number */
2316 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2320 /* Stop sending this frame */
2323 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2325 DPRINTF("+++ C+ mode need TCP or UDP checksum\n");
2327 /* maximum IP header length is 60 bytes */
2328 uint8_t saved_ip_header[60];
2329 memcpy(saved_ip_header, eth_payload_data, hlen);
2331 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2332 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2334 /* add 4 TCP pseudoheader fields */
2335 /* copy IP source and destination fields */
2336 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2338 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2340 DPRINTF("+++ C+ mode calculating TCP checksum for "
2341 "packet with %d bytes data\n", ip_data_len);
2343 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2344 p_tcpip_hdr->zeros = 0;
2345 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2346 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2348 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2350 p_tcp_hdr->th_sum = 0;
2352 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2353 DPRINTF("+++ C+ mode TCP checksum %04x\n",
2356 p_tcp_hdr->th_sum = tcp_checksum;
2358 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2360 DPRINTF("+++ C+ mode calculating UDP checksum for "
2361 "packet with %d bytes data\n", ip_data_len);
2363 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2364 p_udpip_hdr->zeros = 0;
2365 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2366 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2368 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2370 p_udp_hdr->uh_sum = 0;
2372 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2373 DPRINTF("+++ C+ mode UDP checksum %04x\n",
2376 p_udp_hdr->uh_sum = udp_checksum;
2379 /* restore IP header */
2380 memcpy(eth_payload_data, saved_ip_header, hlen);
2385 /* update tally counter */
2386 ++s->tally_counters.TxOk;
2388 DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size);
2390 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1,
2391 (uint8_t *) dot1q_buffer);
2393 /* restore card space if there was no recursion and reset offset */
2394 if (!s->cplus_txbuffer)
2396 s->cplus_txbuffer = saved_buffer;
2397 s->cplus_txbuffer_len = saved_buffer_len;
2398 s->cplus_txbuffer_offset = 0;
2402 qemu_free(saved_buffer);
2407 DPRINTF("+++ C+ mode transmission continue to next descriptor\n");
2413 static void rtl8139_cplus_transmit(RTL8139State *s)
2417 while (rtl8139_cplus_transmit_one(s))
2422 /* Mark transfer completed */
2425 DPRINTF("C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2426 s->currCPlusTxDesc);
2430 /* update interrupt status */
2431 s->IntrStatus |= TxOK;
2432 rtl8139_update_irq(s);
2436 static void rtl8139_transmit(RTL8139State *s)
2438 int descriptor = s->currTxDesc, txcount = 0;
2441 if (rtl8139_transmit_one(s, descriptor))
2448 /* Mark transfer completed */
2451 DPRINTF("transmitter queue stalled, current TxDesc = %d\n",
2456 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2459 int descriptor = txRegOffset/4;
2461 /* handle C+ transmit mode register configuration */
2463 if (s->cplus_enabled)
2465 DPRINTF("RTL8139C+ DTCCR write offset=0x%x val=0x%08x "
2466 "descriptor=%d\n", txRegOffset, val, descriptor);
2468 /* handle Dump Tally Counters command */
2469 s->TxStatus[descriptor] = val;
2471 if (descriptor == 0 && (val & 0x8))
2473 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2475 /* dump tally counters to specified memory location */
2476 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2478 /* mark dump completed */
2479 s->TxStatus[0] &= ~0x8;
2485 DPRINTF("TxStatus write offset=0x%x val=0x%08x descriptor=%d\n",
2486 txRegOffset, val, descriptor);
2488 /* mask only reserved bits */
2489 val &= ~0xff00c000; /* these bits are reset on write */
2490 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2492 s->TxStatus[descriptor] = val;
2494 /* attempt to start transmission */
2495 rtl8139_transmit(s);
2498 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2500 uint32_t ret = s->TxStatus[txRegOffset/4];
2502 DPRINTF("TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret);
2507 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2511 /* Simulate TSAD, it is read only anyway */
2513 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2514 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2515 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2516 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2518 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2519 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2520 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2521 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2523 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2524 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2525 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2526 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2528 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2529 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2530 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2531 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2534 DPRINTF("TSAD read val=0x%04x\n", ret);
2539 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2541 uint16_t ret = s->CSCR;
2543 DPRINTF("CSCR read val=0x%04x\n", ret);
2548 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2550 DPRINTF("TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val);
2552 s->TxAddr[txAddrOffset/4] = val;
2555 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2557 uint32_t ret = s->TxAddr[txAddrOffset/4];
2559 DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret);
2564 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2566 DPRINTF("RxBufPtr write val=0x%04x\n", val);
2568 /* this value is off by 16 */
2569 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2571 DPRINTF(" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2572 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
2575 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2577 /* this value is off by 16 */
2578 uint32_t ret = s->RxBufPtr - 0x10;
2580 DPRINTF("RxBufPtr read val=0x%04x\n", ret);
2585 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2587 /* this value is NOT off by 16 */
2588 uint32_t ret = s->RxBufAddr;
2590 DPRINTF("RxBufAddr read val=0x%04x\n", ret);
2595 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2597 DPRINTF("RxBuf write val=0x%08x\n", val);
2601 /* may need to reset rxring here */
2604 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2606 uint32_t ret = s->RxBuf;
2608 DPRINTF("RxBuf read val=0x%08x\n", ret);
2613 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2615 DPRINTF("IntrMask write(w) val=0x%04x\n", val);
2617 /* mask unwritable bits */
2618 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2622 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2623 rtl8139_update_irq(s);
2627 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2629 uint32_t ret = s->IntrMask;
2631 DPRINTF("IntrMask read(w) val=0x%04x\n", ret);
2636 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2638 DPRINTF("IntrStatus write(w) val=0x%04x\n", val);
2642 /* writing to ISR has no effect */
2647 uint16_t newStatus = s->IntrStatus & ~val;
2649 /* mask unwritable bits */
2650 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2652 /* writing 1 to interrupt status register bit clears it */
2654 rtl8139_update_irq(s);
2656 s->IntrStatus = newStatus;
2658 * Computing if we miss an interrupt here is not that correct but
2659 * considered that we should have had already an interrupt
2660 * and probably emulated is slower is better to assume this resetting was
2661 * done before testing on previous rtl8139_update_irq lead to IRQ loosing
2663 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2664 rtl8139_update_irq(s);
2669 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2671 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2673 uint32_t ret = s->IntrStatus;
2675 DPRINTF("IntrStatus read(w) val=0x%04x\n", ret);
2679 /* reading ISR clears all interrupts */
2682 rtl8139_update_irq(s);
2689 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2691 DPRINTF("MultiIntr write(w) val=0x%04x\n", val);
2693 /* mask unwritable bits */
2694 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2699 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2701 uint32_t ret = s->MultiIntr;
2703 DPRINTF("MultiIntr read(w) val=0x%04x\n", ret);
2708 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2710 RTL8139State *s = opaque;
2716 case MAC0 ... MAC0+5:
2717 s->phys[addr - MAC0] = val;
2719 case MAC0+6 ... MAC0+7:
2722 case MAR0 ... MAR0+7:
2723 s->mult[addr - MAR0] = val;
2726 rtl8139_ChipCmd_write(s, val);
2729 rtl8139_Cfg9346_write(s, val);
2731 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2732 rtl8139_TxConfig_writeb(s, val);
2735 rtl8139_Config0_write(s, val);
2738 rtl8139_Config1_write(s, val);
2741 rtl8139_Config3_write(s, val);
2744 rtl8139_Config4_write(s, val);
2747 rtl8139_Config5_write(s, val);
2751 DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n",
2756 DPRINTF("HltClk write val=0x%08x\n", val);
2759 s->clock_enabled = 1;
2761 else if (val == 'H')
2763 s->clock_enabled = 0;
2768 DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val);
2773 DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val);
2776 DPRINTF("C+ TxPoll high priority transmission (not "
2778 //rtl8139_cplus_transmit(s);
2782 DPRINTF("C+ TxPoll normal priority transmission\n");
2783 rtl8139_cplus_transmit(s);
2789 DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
2795 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2797 RTL8139State *s = opaque;
2804 rtl8139_IntrMask_write(s, val);
2808 rtl8139_IntrStatus_write(s, val);
2812 rtl8139_MultiIntr_write(s, val);
2816 rtl8139_RxBufPtr_write(s, val);
2820 rtl8139_BasicModeCtrl_write(s, val);
2822 case BasicModeStatus:
2823 rtl8139_BasicModeStatus_write(s, val);
2826 DPRINTF("NWayAdvert write(w) val=0x%04x\n", val);
2827 s->NWayAdvert = val;
2830 DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val);
2833 DPRINTF("NWayExpansion write(w) val=0x%04x\n", val);
2834 s->NWayExpansion = val;
2838 rtl8139_CpCmd_write(s, val);
2842 rtl8139_IntrMitigate_write(s, val);
2846 DPRINTF("ioport write(w) addr=0x%x val=0x%04x via write(b)\n",
2849 rtl8139_io_writeb(opaque, addr, val & 0xff);
2850 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2855 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time)
2857 int64_t pci_time, next_time;
2860 DPRINTF("entered rtl8139_set_next_tctr_time\n");
2862 if (s->TimerExpire && current_time >= s->TimerExpire) {
2863 s->IntrStatus |= PCSTimeout;
2864 rtl8139_update_irq(s);
2867 /* Set QEMU timer only if needed that is
2868 * - TimerInt <> 0 (we have a timer)
2869 * - mask = 1 (we want an interrupt timer)
2870 * - irq = 0 (irq is not already active)
2871 * If any of above change we need to compute timer again
2872 * Also we must check if timer is passed without QEMU timer
2879 pci_time = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
2880 get_ticks_per_sec());
2881 low_pci = pci_time & 0xffffffff;
2882 pci_time = pci_time - low_pci + s->TimerInt;
2883 if (low_pci >= s->TimerInt) {
2884 pci_time += 0x100000000LL;
2886 next_time = s->TCTR_base + muldiv64(pci_time, get_ticks_per_sec(),
2888 s->TimerExpire = next_time;
2890 if ((s->IntrMask & PCSTimeout) != 0 && (s->IntrStatus & PCSTimeout) == 0) {
2891 qemu_mod_timer(s->timer, next_time);
2895 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2897 RTL8139State *s = opaque;
2904 DPRINTF("RxMissed clearing on write\n");
2909 rtl8139_TxConfig_write(s, val);
2913 rtl8139_RxConfig_write(s, val);
2916 case TxStatus0 ... TxStatus0+4*4-1:
2917 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2920 case TxAddr0 ... TxAddr0+4*4-1:
2921 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2925 rtl8139_RxBuf_write(s, val);
2929 DPRINTF("C+ RxRing low bits write val=0x%08x\n", val);
2930 s->RxRingAddrLO = val;
2934 DPRINTF("C+ RxRing high bits write val=0x%08x\n", val);
2935 s->RxRingAddrHI = val;
2939 DPRINTF("TCTR Timer reset on write\n");
2940 s->TCTR_base = qemu_get_clock_ns(vm_clock);
2941 rtl8139_set_next_tctr_time(s, s->TCTR_base);
2945 DPRINTF("FlashReg TimerInt write val=0x%08x\n", val);
2946 if (s->TimerInt != val) {
2948 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2953 DPRINTF("ioport write(l) addr=0x%x val=0x%08x via write(b)\n",
2955 rtl8139_io_writeb(opaque, addr, val & 0xff);
2956 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2957 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2958 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2963 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2965 RTL8139State *s = opaque;
2972 case MAC0 ... MAC0+5:
2973 ret = s->phys[addr - MAC0];
2975 case MAC0+6 ... MAC0+7:
2978 case MAR0 ... MAR0+7:
2979 ret = s->mult[addr - MAR0];
2982 ret = rtl8139_ChipCmd_read(s);
2985 ret = rtl8139_Cfg9346_read(s);
2988 ret = rtl8139_Config0_read(s);
2991 ret = rtl8139_Config1_read(s);
2994 ret = rtl8139_Config3_read(s);
2997 ret = rtl8139_Config4_read(s);
3000 ret = rtl8139_Config5_read(s);
3005 DPRINTF("MediaStatus read 0x%x\n", ret);
3009 ret = s->clock_enabled;
3010 DPRINTF("HltClk read 0x%x\n", ret);
3014 ret = RTL8139_PCI_REVID;
3015 DPRINTF("PCI Revision ID read 0x%x\n", ret);
3020 DPRINTF("C+ TxThresh read(b) val=0x%02x\n", ret);
3023 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
3024 ret = s->TxConfig >> 24;
3025 DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret);
3029 DPRINTF("not implemented read(b) addr=0x%x\n", addr);
3037 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
3039 RTL8139State *s = opaque;
3042 addr &= 0xfe; /* mask lower bit */
3047 ret = rtl8139_IntrMask_read(s);
3051 ret = rtl8139_IntrStatus_read(s);
3055 ret = rtl8139_MultiIntr_read(s);
3059 ret = rtl8139_RxBufPtr_read(s);
3063 ret = rtl8139_RxBufAddr_read(s);
3067 ret = rtl8139_BasicModeCtrl_read(s);
3069 case BasicModeStatus:
3070 ret = rtl8139_BasicModeStatus_read(s);
3073 ret = s->NWayAdvert;
3074 DPRINTF("NWayAdvert read(w) val=0x%04x\n", ret);
3078 DPRINTF("NWayLPAR read(w) val=0x%04x\n", ret);
3081 ret = s->NWayExpansion;
3082 DPRINTF("NWayExpansion read(w) val=0x%04x\n", ret);
3086 ret = rtl8139_CpCmd_read(s);
3090 ret = rtl8139_IntrMitigate_read(s);
3094 ret = rtl8139_TSAD_read(s);
3098 ret = rtl8139_CSCR_read(s);
3102 DPRINTF("ioport read(w) addr=0x%x via read(b)\n", addr);
3104 ret = rtl8139_io_readb(opaque, addr);
3105 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3107 DPRINTF("ioport read(w) addr=0x%x val=0x%04x\n", addr, ret);
3114 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
3116 RTL8139State *s = opaque;
3119 addr &= 0xfc; /* also mask low 2 bits */
3126 DPRINTF("RxMissed read val=0x%08x\n", ret);
3130 ret = rtl8139_TxConfig_read(s);
3134 ret = rtl8139_RxConfig_read(s);
3137 case TxStatus0 ... TxStatus0+4*4-1:
3138 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
3141 case TxAddr0 ... TxAddr0+4*4-1:
3142 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
3146 ret = rtl8139_RxBuf_read(s);
3150 ret = s->RxRingAddrLO;
3151 DPRINTF("C+ RxRing low bits read val=0x%08x\n", ret);
3155 ret = s->RxRingAddrHI;
3156 DPRINTF("C+ RxRing high bits read val=0x%08x\n", ret);
3160 ret = muldiv64(qemu_get_clock_ns(vm_clock) - s->TCTR_base,
3161 PCI_FREQUENCY, get_ticks_per_sec());
3162 DPRINTF("TCTR Timer read val=0x%08x\n", ret);
3167 DPRINTF("FlashReg TimerInt read val=0x%08x\n", ret);
3171 DPRINTF("ioport read(l) addr=0x%x via read(b)\n", addr);
3173 ret = rtl8139_io_readb(opaque, addr);
3174 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3175 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3176 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3178 DPRINTF("read(l) addr=0x%x val=%08x\n", addr, ret);
3187 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3189 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3192 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3194 rtl8139_io_writew(opaque, addr & 0xFF, val);
3197 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3199 rtl8139_io_writel(opaque, addr & 0xFF, val);
3202 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3204 return rtl8139_io_readb(opaque, addr & 0xFF);
3207 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3209 return rtl8139_io_readw(opaque, addr & 0xFF);
3212 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3214 return rtl8139_io_readl(opaque, addr & 0xFF);
3219 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3221 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3224 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3226 rtl8139_io_writew(opaque, addr & 0xFF, val);
3229 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3231 rtl8139_io_writel(opaque, addr & 0xFF, val);
3234 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3236 return rtl8139_io_readb(opaque, addr & 0xFF);
3239 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3241 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3245 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3247 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3251 static int rtl8139_post_load(void *opaque, int version_id)
3253 RTL8139State* s = opaque;
3254 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3255 if (version_id < 4) {
3256 s->cplus_enabled = s->CpCmd != 0;
3262 static bool rtl8139_hotplug_ready_needed(void *opaque)
3264 return qdev_machine_modified();
3267 static const VMStateDescription vmstate_rtl8139_hotplug_ready ={
3268 .name = "rtl8139/hotplug_ready",
3270 .minimum_version_id = 1,
3271 .minimum_version_id_old = 1,
3272 .fields = (VMStateField []) {
3273 VMSTATE_END_OF_LIST()
3277 static void rtl8139_pre_save(void *opaque)
3279 RTL8139State* s = opaque;
3280 int64_t current_time = qemu_get_clock_ns(vm_clock);
3282 /* set IntrStatus correctly */
3283 rtl8139_set_next_tctr_time(s, current_time);
3284 s->TCTR = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
3285 get_ticks_per_sec());
3286 s->rtl8139_mmio_io_addr_dummy = s->rtl8139_mmio_io_addr;
3289 static const VMStateDescription vmstate_rtl8139 = {
3292 .minimum_version_id = 3,
3293 .minimum_version_id_old = 3,
3294 .post_load = rtl8139_post_load,
3295 .pre_save = rtl8139_pre_save,
3296 .fields = (VMStateField []) {
3297 VMSTATE_PCI_DEVICE(dev, RTL8139State),
3298 VMSTATE_PARTIAL_BUFFER(phys, RTL8139State, 6),
3299 VMSTATE_BUFFER(mult, RTL8139State),
3300 VMSTATE_UINT32_ARRAY(TxStatus, RTL8139State, 4),
3301 VMSTATE_UINT32_ARRAY(TxAddr, RTL8139State, 4),
3303 VMSTATE_UINT32(RxBuf, RTL8139State),
3304 VMSTATE_UINT32(RxBufferSize, RTL8139State),
3305 VMSTATE_UINT32(RxBufPtr, RTL8139State),
3306 VMSTATE_UINT32(RxBufAddr, RTL8139State),
3308 VMSTATE_UINT16(IntrStatus, RTL8139State),
3309 VMSTATE_UINT16(IntrMask, RTL8139State),
3311 VMSTATE_UINT32(TxConfig, RTL8139State),
3312 VMSTATE_UINT32(RxConfig, RTL8139State),
3313 VMSTATE_UINT32(RxMissed, RTL8139State),
3314 VMSTATE_UINT16(CSCR, RTL8139State),
3316 VMSTATE_UINT8(Cfg9346, RTL8139State),
3317 VMSTATE_UINT8(Config0, RTL8139State),
3318 VMSTATE_UINT8(Config1, RTL8139State),
3319 VMSTATE_UINT8(Config3, RTL8139State),
3320 VMSTATE_UINT8(Config4, RTL8139State),
3321 VMSTATE_UINT8(Config5, RTL8139State),
3323 VMSTATE_UINT8(clock_enabled, RTL8139State),
3324 VMSTATE_UINT8(bChipCmdState, RTL8139State),
3326 VMSTATE_UINT16(MultiIntr, RTL8139State),
3328 VMSTATE_UINT16(BasicModeCtrl, RTL8139State),
3329 VMSTATE_UINT16(BasicModeStatus, RTL8139State),
3330 VMSTATE_UINT16(NWayAdvert, RTL8139State),
3331 VMSTATE_UINT16(NWayLPAR, RTL8139State),
3332 VMSTATE_UINT16(NWayExpansion, RTL8139State),
3334 VMSTATE_UINT16(CpCmd, RTL8139State),
3335 VMSTATE_UINT8(TxThresh, RTL8139State),
3338 VMSTATE_MACADDR(conf.macaddr, RTL8139State),
3339 VMSTATE_INT32(rtl8139_mmio_io_addr_dummy, RTL8139State),
3341 VMSTATE_UINT32(currTxDesc, RTL8139State),
3342 VMSTATE_UINT32(currCPlusRxDesc, RTL8139State),
3343 VMSTATE_UINT32(currCPlusTxDesc, RTL8139State),
3344 VMSTATE_UINT32(RxRingAddrLO, RTL8139State),
3345 VMSTATE_UINT32(RxRingAddrHI, RTL8139State),
3347 VMSTATE_UINT16_ARRAY(eeprom.contents, RTL8139State, EEPROM_9346_SIZE),
3348 VMSTATE_INT32(eeprom.mode, RTL8139State),
3349 VMSTATE_UINT32(eeprom.tick, RTL8139State),
3350 VMSTATE_UINT8(eeprom.address, RTL8139State),
3351 VMSTATE_UINT16(eeprom.input, RTL8139State),
3352 VMSTATE_UINT16(eeprom.output, RTL8139State),
3354 VMSTATE_UINT8(eeprom.eecs, RTL8139State),
3355 VMSTATE_UINT8(eeprom.eesk, RTL8139State),
3356 VMSTATE_UINT8(eeprom.eedi, RTL8139State),
3357 VMSTATE_UINT8(eeprom.eedo, RTL8139State),
3359 VMSTATE_UINT32(TCTR, RTL8139State),
3360 VMSTATE_UINT32(TimerInt, RTL8139State),
3361 VMSTATE_INT64(TCTR_base, RTL8139State),
3363 VMSTATE_STRUCT(tally_counters, RTL8139State, 0,
3364 vmstate_tally_counters, RTL8139TallyCounters),
3366 VMSTATE_UINT32_V(cplus_enabled, RTL8139State, 4),
3367 VMSTATE_END_OF_LIST()
3369 .subsections = (VMStateSubsection []) {
3371 .vmsd = &vmstate_rtl8139_hotplug_ready,
3372 .needed = rtl8139_hotplug_ready_needed,
3379 /***********************************************************/
3380 /* PCI RTL8139 definitions */
3382 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3383 pcibus_t addr, pcibus_t size, int type)
3385 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3387 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3388 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3390 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3391 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3393 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3394 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3397 static CPUReadMemoryFunc * const rtl8139_mmio_read[3] = {
3403 static CPUWriteMemoryFunc * const rtl8139_mmio_write[3] = {
3404 rtl8139_mmio_writeb,
3405 rtl8139_mmio_writew,
3406 rtl8139_mmio_writel,
3409 static void rtl8139_timer(void *opaque)
3411 RTL8139State *s = opaque;
3413 if (!s->clock_enabled)
3415 DPRINTF(">>> timer: clock is not running\n");
3419 s->IntrStatus |= PCSTimeout;
3420 rtl8139_update_irq(s);
3421 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3424 static void rtl8139_cleanup(VLANClientState *nc)
3426 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
3431 static int pci_rtl8139_uninit(PCIDevice *dev)
3433 RTL8139State *s = DO_UPCAST(RTL8139State, dev, dev);
3435 cpu_unregister_io_memory(s->rtl8139_mmio_io_addr);
3436 if (s->cplus_txbuffer) {
3437 qemu_free(s->cplus_txbuffer);
3438 s->cplus_txbuffer = NULL;
3440 qemu_del_timer(s->timer);
3441 qemu_free_timer(s->timer);
3442 qemu_del_vlan_client(&s->nic->nc);
3446 static NetClientInfo net_rtl8139_info = {
3447 .type = NET_CLIENT_TYPE_NIC,
3448 .size = sizeof(NICState),
3449 .can_receive = rtl8139_can_receive,
3450 .receive = rtl8139_receive,
3451 .cleanup = rtl8139_cleanup,
3454 static int pci_rtl8139_init(PCIDevice *dev)
3456 RTL8139State * s = DO_UPCAST(RTL8139State, dev, dev);
3459 pci_conf = s->dev.config;
3460 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin 0 */
3461 /* TODO: start of capability list, but no capability
3462 * list bit in status register, and offset 0xdc seems unused. */
3463 pci_conf[PCI_CAPABILITY_LIST] = 0xdc;
3465 /* I/O handler for memory-mapped I/O */
3466 s->rtl8139_mmio_io_addr =
3467 cpu_register_io_memory(rtl8139_mmio_read, rtl8139_mmio_write, s,
3468 DEVICE_LITTLE_ENDIAN);
3470 pci_register_bar(&s->dev, 0, 0x100,
3471 PCI_BASE_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3473 pci_register_bar_simple(&s->dev, 1, 0x100, 0, s->rtl8139_mmio_io_addr);
3475 qemu_macaddr_default_if_unset(&s->conf.macaddr);
3477 /* prepare eeprom */
3478 s->eeprom.contents[0] = 0x8129;
3480 /* PCI vendor and device ID should be mirrored here */
3481 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
3482 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
3484 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
3485 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
3486 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
3488 s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf,
3489 dev->qdev.info->name, dev->qdev.id, s);
3490 qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a);
3492 s->cplus_txbuffer = NULL;
3493 s->cplus_txbuffer_len = 0;
3494 s->cplus_txbuffer_offset = 0;
3497 s->timer = qemu_new_timer_ns(vm_clock, rtl8139_timer, s);
3498 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3500 add_boot_device_path(s->conf.bootindex, &dev->qdev, "/ethernet-phy@0");
3505 static PCIDeviceInfo rtl8139_info = {
3506 .qdev.name = "rtl8139",
3507 .qdev.size = sizeof(RTL8139State),
3508 .qdev.reset = rtl8139_reset,
3509 .qdev.vmsd = &vmstate_rtl8139,
3510 .init = pci_rtl8139_init,
3511 .exit = pci_rtl8139_uninit,
3512 .romfile = "pxe-rtl8139.rom",
3513 .vendor_id = PCI_VENDOR_ID_REALTEK,
3514 .device_id = PCI_DEVICE_ID_REALTEK_8139,
3515 .revision = RTL8139_PCI_REVID, /* >=0x20 is for 8139C+ */
3516 .class_id = PCI_CLASS_NETWORK_ETHERNET,
3517 .qdev.props = (Property[]) {
3518 DEFINE_NIC_PROPERTIES(RTL8139State, conf),
3519 DEFINE_PROP_END_OF_LIST(),
3523 static void rtl8139_register_devices(void)
3525 pci_qdev_register(&rtl8139_info);
3528 device_init(rtl8139_register_devices)