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 __attribute__ ((format (printf, 1, 2)))
92 int DPRINTF(const char *fmt, ...)
98 /* Symbolic offsets to registers. */
99 enum RTL8139_registers {
100 MAC0 = 0, /* Ethernet hardware address. */
101 MAR0 = 8, /* Multicast filter. */
102 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
103 /* Dump Tally Conter control register(64bit). C+ mode only */
104 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
113 Timer = 0x48, /* A general-purpose counter. */
114 RxMissed = 0x4C, /* 24 bits valid, write clears. */
121 Config4 = 0x5A, /* absent on RTL-8139A */
124 PCIRevisionID = 0x5E,
125 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
126 BasicModeCtrl = 0x62,
127 BasicModeStatus = 0x64,
130 NWayExpansion = 0x6A,
131 /* Undocumented registers, but required for proper operation. */
132 FIFOTMS = 0x70, /* FIFO Control and test. */
133 CSCR = 0x74, /* Chip Status and Configuration Register. */
135 PARA7c = 0x7c, /* Magic transceiver parameter register. */
136 Config5 = 0xD8, /* absent on RTL-8139A */
138 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
139 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
140 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
141 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
142 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
143 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
144 TxThresh = 0xEC, /* Early Tx threshold */
148 MultiIntrClear = 0xF000,
150 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
162 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
163 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
168 /* Interrupt register bits, using my own meaningful names. */
169 enum IntrStatusBits {
180 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
187 TxOutOfWindow = 0x20000000,
188 TxAborted = 0x40000000,
189 TxCarrierLost = 0x80000000,
192 RxMulticast = 0x8000,
194 RxBroadcast = 0x2000,
195 RxBadSymbol = 0x0020,
203 /* Bits in RxConfig. */
207 AcceptBroadcast = 0x08,
208 AcceptMulticast = 0x04,
210 AcceptAllPhys = 0x01,
213 /* Bits in TxConfig. */
214 enum tx_config_bits {
216 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
218 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
219 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
220 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
221 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
223 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
224 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
225 TxClearAbt = (1 << 0), /* Clear abort (WO) */
226 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
227 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
229 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
233 /* Transmit Status of All Descriptors (TSAD) Register */
235 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
236 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
237 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
238 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
239 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
240 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
241 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
242 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
243 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
244 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
245 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
246 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
247 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
248 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
249 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
250 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
254 /* Bits in Config1 */
256 Cfg1_PM_Enable = 0x01,
257 Cfg1_VPD_Enable = 0x02,
260 LWAKE = 0x10, /* not on 8139, 8139A */
261 Cfg1_Driver_Load = 0x20,
264 SLEEP = (1 << 1), /* only on 8139, 8139A */
265 PWRDN = (1 << 0), /* only on 8139, 8139A */
268 /* Bits in Config3 */
270 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
271 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
272 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
273 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
274 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
275 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
276 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
277 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
280 /* Bits in Config4 */
282 LWPTN = (1 << 2), /* not on 8139, 8139A */
285 /* Bits in Config5 */
287 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
288 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
289 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
290 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
291 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
292 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
293 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
297 /* rx fifo threshold */
299 RxCfgFIFONone = (7 << RxCfgFIFOShift),
303 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
305 /* rx ring buffer length */
307 RxCfgRcv16K = (1 << 11),
308 RxCfgRcv32K = (1 << 12),
309 RxCfgRcv64K = (1 << 11) | (1 << 12),
311 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
315 /* Twister tuning parameters from RealTek.
316 Completely undocumented, but required to tune bad links on some boards. */
319 CSCR_LinkOKBit = 0x0400,
320 CSCR_LinkChangeBit = 0x0800,
321 CSCR_LinkStatusBits = 0x0f000,
322 CSCR_LinkDownOffCmd = 0x003c0,
323 CSCR_LinkDownCmd = 0x0f3c0,
326 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
327 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*/
328 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
329 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
330 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
331 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
332 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*/
333 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
334 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
339 Cfg9346_Unlock = 0xC0,
356 HasHltClk = (1 << 0),
360 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
361 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
362 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
364 #define RTL8139_PCI_REVID_8139 0x10
365 #define RTL8139_PCI_REVID_8139CPLUS 0x20
367 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
369 /* Size is 64 * 16bit words */
370 #define EEPROM_9346_ADDR_BITS 6
371 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
372 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
374 enum Chip9346Operation
376 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
377 Chip9346_op_read = 0x80, /* 10 AAAAAA */
378 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
379 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
380 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
381 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
382 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
388 Chip9346_enter_command_mode,
389 Chip9346_read_command,
390 Chip9346_data_read, /* from output register */
391 Chip9346_data_write, /* to input register, then to contents at specified address */
392 Chip9346_data_write_all, /* to input register, then filling contents */
395 typedef struct EEprom9346
397 uint16_t contents[EEPROM_9346_SIZE];
410 typedef struct RTL8139TallyCounters
426 } RTL8139TallyCounters;
428 /* Clears all tally counters */
429 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
431 /* Writes tally counters to specified physical memory address */
432 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* counters);
434 typedef struct RTL8139State {
436 uint8_t phys[8]; /* mac address */
437 uint8_t mult[8]; /* multicast mask array */
439 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
440 uint32_t TxAddr[4]; /* TxAddr0 */
441 uint32_t RxBuf; /* Receive buffer */
442 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
462 uint8_t clock_enabled;
463 uint8_t bChipCmdState;
467 uint16_t BasicModeCtrl;
468 uint16_t BasicModeStatus;
471 uint16_t NWayExpansion;
478 int rtl8139_mmio_io_addr;
484 uint32_t cplus_enabled;
486 uint32_t currCPlusRxDesc;
487 uint32_t currCPlusTxDesc;
489 uint32_t RxRingAddrLO;
490 uint32_t RxRingAddrHI;
499 RTL8139TallyCounters tally_counters;
501 /* Non-persistent data */
502 uint8_t *cplus_txbuffer;
503 int cplus_txbuffer_len;
504 int cplus_txbuffer_offset;
506 /* PCI interrupt timer */
510 /* Support migration to/from old versions */
511 int rtl8139_mmio_io_addr_dummy;
514 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time);
516 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
518 DPRINTF("eeprom command 0x%02x\n", command);
520 switch (command & Chip9346_op_mask)
522 case Chip9346_op_read:
524 eeprom->address = command & EEPROM_9346_ADDR_MASK;
525 eeprom->output = eeprom->contents[eeprom->address];
528 eeprom->mode = Chip9346_data_read;
529 DPRINTF("eeprom read from address 0x%02x data=0x%04x\n",
530 eeprom->address, eeprom->output);
534 case Chip9346_op_write:
536 eeprom->address = command & EEPROM_9346_ADDR_MASK;
539 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
540 DPRINTF("eeprom begin write to address 0x%02x\n",
545 eeprom->mode = Chip9346_none;
546 switch (command & Chip9346_op_ext_mask)
548 case Chip9346_op_write_enable:
549 DPRINTF("eeprom write enabled\n");
551 case Chip9346_op_write_all:
552 DPRINTF("eeprom begin write all\n");
554 case Chip9346_op_write_disable:
555 DPRINTF("eeprom write disabled\n");
562 static void prom9346_shift_clock(EEprom9346 *eeprom)
564 int bit = eeprom->eedi?1:0;
568 DPRINTF("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi,
571 switch (eeprom->mode)
573 case Chip9346_enter_command_mode:
576 eeprom->mode = Chip9346_read_command;
579 DPRINTF("eeprom: +++ synchronized, begin command read\n");
583 case Chip9346_read_command:
584 eeprom->input = (eeprom->input << 1) | (bit & 1);
585 if (eeprom->tick == 8)
587 prom9346_decode_command(eeprom, eeprom->input & 0xff);
591 case Chip9346_data_read:
592 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
593 eeprom->output <<= 1;
594 if (eeprom->tick == 16)
597 // the FreeBSD drivers (rl and re) don't explicitly toggle
598 // CS between reads (or does setting Cfg9346 to 0 count too?),
599 // so we need to enter wait-for-command state here
600 eeprom->mode = Chip9346_enter_command_mode;
604 DPRINTF("eeprom: +++ end of read, awaiting next command\n");
606 // original behaviour
608 eeprom->address &= EEPROM_9346_ADDR_MASK;
609 eeprom->output = eeprom->contents[eeprom->address];
612 DPRINTF("eeprom: +++ read next address 0x%02x data=0x%04x\n",
613 eeprom->address, eeprom->output);
618 case Chip9346_data_write:
619 eeprom->input = (eeprom->input << 1) | (bit & 1);
620 if (eeprom->tick == 16)
622 DPRINTF("eeprom write to address 0x%02x data=0x%04x\n",
623 eeprom->address, eeprom->input);
625 eeprom->contents[eeprom->address] = eeprom->input;
626 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
632 case Chip9346_data_write_all:
633 eeprom->input = (eeprom->input << 1) | (bit & 1);
634 if (eeprom->tick == 16)
637 for (i = 0; i < EEPROM_9346_SIZE; i++)
639 eeprom->contents[i] = eeprom->input;
641 DPRINTF("eeprom filled with data=0x%04x\n", eeprom->input);
643 eeprom->mode = Chip9346_enter_command_mode;
654 static int prom9346_get_wire(RTL8139State *s)
656 EEprom9346 *eeprom = &s->eeprom;
663 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
664 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
666 EEprom9346 *eeprom = &s->eeprom;
667 uint8_t old_eecs = eeprom->eecs;
668 uint8_t old_eesk = eeprom->eesk;
674 DPRINTF("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs,
675 eeprom->eesk, eeprom->eedi, eeprom->eedo);
677 if (!old_eecs && eecs)
679 /* Synchronize start */
683 eeprom->mode = Chip9346_enter_command_mode;
685 DPRINTF("=== eeprom: begin access, enter command mode\n");
690 DPRINTF("=== eeprom: end access\n");
694 if (!old_eesk && eesk)
697 prom9346_shift_clock(eeprom);
701 static void rtl8139_update_irq(RTL8139State *s)
704 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
706 DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus,
709 qemu_set_irq(s->dev.irq[0], (isr != 0));
712 #define POLYNOMIAL 0x04c11db6
716 static int compute_mcast_idx(const uint8_t *ep)
723 for (i = 0; i < 6; i++) {
725 for (j = 0; j < 8; j++) {
726 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
730 crc = ((crc ^ POLYNOMIAL) | carry);
736 static int rtl8139_RxWrap(RTL8139State *s)
738 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
739 return (s->RxConfig & (1 << 7));
742 static int rtl8139_receiver_enabled(RTL8139State *s)
744 return s->bChipCmdState & CmdRxEnb;
747 static int rtl8139_transmitter_enabled(RTL8139State *s)
749 return s->bChipCmdState & CmdTxEnb;
752 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
754 return s->CpCmd & CPlusRxEnb;
757 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
759 return s->CpCmd & CPlusTxEnb;
762 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
764 if (s->RxBufAddr + size > s->RxBufferSize)
766 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
768 /* write packet data */
769 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
771 DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped);
775 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
779 /* reset buffer pointer */
782 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
783 buf + (size-wrapped), wrapped );
785 s->RxBufAddr = wrapped;
791 /* non-wrapping path or overwrapping enabled */
792 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
794 s->RxBufAddr += size;
797 #define MIN_BUF_SIZE 60
798 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
800 #if TARGET_PHYS_ADDR_BITS > 32
801 return low | ((target_phys_addr_t)high << 32);
807 static int rtl8139_can_receive(VLANClientState *nc)
809 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
812 /* Receive (drop) packets if card is disabled. */
813 if (!s->clock_enabled)
815 if (!rtl8139_receiver_enabled(s))
818 if (rtl8139_cp_receiver_enabled(s)) {
819 /* ??? Flow control not implemented in c+ mode.
820 This is a hack to work around slirp deficiencies anyway. */
823 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
825 return (avail == 0 || avail >= 1514);
829 static ssize_t rtl8139_do_receive(VLANClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt)
831 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
832 /* size is the length of the buffer passed to the driver */
834 const uint8_t *dot1q_buf = NULL;
836 uint32_t packet_header = 0;
838 uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
839 static const uint8_t broadcast_macaddr[6] =
840 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
842 DPRINTF(">>> received len=%d\n", size);
844 /* test if board clock is stopped */
845 if (!s->clock_enabled)
847 DPRINTF("stopped ==========================\n");
851 /* first check if receiver is enabled */
853 if (!rtl8139_receiver_enabled(s))
855 DPRINTF("receiver disabled ================\n");
859 /* XXX: check this */
860 if (s->RxConfig & AcceptAllPhys) {
861 /* promiscuous: receive all */
862 DPRINTF(">>> packet received in promiscuous mode\n");
865 if (!memcmp(buf, broadcast_macaddr, 6)) {
866 /* broadcast address */
867 if (!(s->RxConfig & AcceptBroadcast))
869 DPRINTF(">>> broadcast packet rejected\n");
871 /* update tally counter */
872 ++s->tally_counters.RxERR;
877 packet_header |= RxBroadcast;
879 DPRINTF(">>> broadcast packet received\n");
881 /* update tally counter */
882 ++s->tally_counters.RxOkBrd;
884 } else if (buf[0] & 0x01) {
886 if (!(s->RxConfig & AcceptMulticast))
888 DPRINTF(">>> multicast packet rejected\n");
890 /* update tally counter */
891 ++s->tally_counters.RxERR;
896 int mcast_idx = compute_mcast_idx(buf);
898 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
900 DPRINTF(">>> multicast address mismatch\n");
902 /* update tally counter */
903 ++s->tally_counters.RxERR;
908 packet_header |= RxMulticast;
910 DPRINTF(">>> multicast packet received\n");
912 /* update tally counter */
913 ++s->tally_counters.RxOkMul;
915 } else if (s->phys[0] == buf[0] &&
916 s->phys[1] == buf[1] &&
917 s->phys[2] == buf[2] &&
918 s->phys[3] == buf[3] &&
919 s->phys[4] == buf[4] &&
920 s->phys[5] == buf[5]) {
922 if (!(s->RxConfig & AcceptMyPhys))
924 DPRINTF(">>> rejecting physical address matching packet\n");
926 /* update tally counter */
927 ++s->tally_counters.RxERR;
932 packet_header |= RxPhysical;
934 DPRINTF(">>> physical address matching packet received\n");
936 /* update tally counter */
937 ++s->tally_counters.RxOkPhy;
941 DPRINTF(">>> unknown packet\n");
943 /* update tally counter */
944 ++s->tally_counters.RxERR;
950 /* if too small buffer, then expand it
951 * Include some tailroom in case a vlan tag is later removed. */
952 if (size < MIN_BUF_SIZE + VLAN_HLEN) {
953 memcpy(buf1, buf, size);
954 memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
956 if (size < MIN_BUF_SIZE) {
961 if (rtl8139_cp_receiver_enabled(s))
963 DPRINTF("in C+ Rx mode ================\n");
965 /* begin C+ receiver mode */
967 /* w0 ownership flag */
968 #define CP_RX_OWN (1<<31)
969 /* w0 end of ring flag */
970 #define CP_RX_EOR (1<<30)
971 /* w0 bits 0...12 : buffer size */
972 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
973 /* w1 tag available flag */
974 #define CP_RX_TAVA (1<<16)
975 /* w1 bits 0...15 : VLAN tag */
976 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
977 /* w2 low 32bit of Rx buffer ptr */
978 /* w3 high 32bit of Rx buffer ptr */
980 int descriptor = s->currCPlusRxDesc;
981 target_phys_addr_t cplus_rx_ring_desc;
983 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
984 cplus_rx_ring_desc += 16 * descriptor;
986 DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at "
987 "%08x %08x = "TARGET_FMT_plx"\n", descriptor, s->RxRingAddrHI,
988 s->RxRingAddrLO, cplus_rx_ring_desc);
990 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
992 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
993 rxdw0 = le32_to_cpu(val);
994 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
995 rxdw1 = le32_to_cpu(val);
996 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
997 rxbufLO = le32_to_cpu(val);
998 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
999 rxbufHI = le32_to_cpu(val);
1001 DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
1002 descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI);
1004 if (!(rxdw0 & CP_RX_OWN))
1006 DPRINTF("C+ Rx mode : descriptor %d is owned by host\n",
1009 s->IntrStatus |= RxOverflow;
1012 /* update tally counter */
1013 ++s->tally_counters.RxERR;
1014 ++s->tally_counters.MissPkt;
1016 rtl8139_update_irq(s);
1020 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1022 /* write VLAN info to descriptor variables. */
1023 if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *)
1024 &buf[ETHER_ADDR_LEN * 2]) == ETH_P_8021Q) {
1025 dot1q_buf = &buf[ETHER_ADDR_LEN * 2];
1027 /* if too small buffer, use the tailroom added duing expansion */
1028 if (size < MIN_BUF_SIZE) {
1029 size = MIN_BUF_SIZE;
1032 rxdw1 &= ~CP_RX_VLAN_TAG_MASK;
1033 /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */
1034 rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *)
1035 &dot1q_buf[ETHER_TYPE_LEN]);
1037 DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n",
1038 be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN]));
1040 /* reset VLAN tag flag */
1041 rxdw1 &= ~CP_RX_TAVA;
1044 /* TODO: scatter the packet over available receive ring descriptors space */
1046 if (size+4 > rx_space)
1048 DPRINTF("C+ Rx mode : descriptor %d size %d received %d + 4\n",
1049 descriptor, rx_space, size);
1051 s->IntrStatus |= RxOverflow;
1054 /* update tally counter */
1055 ++s->tally_counters.RxERR;
1056 ++s->tally_counters.MissPkt;
1058 rtl8139_update_irq(s);
1062 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1064 /* receive/copy to target memory */
1066 cpu_physical_memory_write(rx_addr, buf, 2 * ETHER_ADDR_LEN);
1067 cpu_physical_memory_write(rx_addr + 2 * ETHER_ADDR_LEN,
1068 buf + 2 * ETHER_ADDR_LEN + VLAN_HLEN,
1069 size - 2 * ETHER_ADDR_LEN);
1071 cpu_physical_memory_write(rx_addr, buf, size);
1074 if (s->CpCmd & CPlusRxChkSum)
1076 /* do some packet checksumming */
1079 /* write checksum */
1080 val = cpu_to_le32(crc32(0, buf, size_));
1081 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1083 /* first segment of received packet flag */
1084 #define CP_RX_STATUS_FS (1<<29)
1085 /* last segment of received packet flag */
1086 #define CP_RX_STATUS_LS (1<<28)
1087 /* multicast packet flag */
1088 #define CP_RX_STATUS_MAR (1<<26)
1089 /* physical-matching packet flag */
1090 #define CP_RX_STATUS_PAM (1<<25)
1091 /* broadcast packet flag */
1092 #define CP_RX_STATUS_BAR (1<<24)
1093 /* runt packet flag */
1094 #define CP_RX_STATUS_RUNT (1<<19)
1095 /* crc error flag */
1096 #define CP_RX_STATUS_CRC (1<<18)
1097 /* IP checksum error flag */
1098 #define CP_RX_STATUS_IPF (1<<15)
1099 /* UDP checksum error flag */
1100 #define CP_RX_STATUS_UDPF (1<<14)
1101 /* TCP checksum error flag */
1102 #define CP_RX_STATUS_TCPF (1<<13)
1104 /* transfer ownership to target */
1105 rxdw0 &= ~CP_RX_OWN;
1107 /* set first segment bit */
1108 rxdw0 |= CP_RX_STATUS_FS;
1110 /* set last segment bit */
1111 rxdw0 |= CP_RX_STATUS_LS;
1113 /* set received packet type flags */
1114 if (packet_header & RxBroadcast)
1115 rxdw0 |= CP_RX_STATUS_BAR;
1116 if (packet_header & RxMulticast)
1117 rxdw0 |= CP_RX_STATUS_MAR;
1118 if (packet_header & RxPhysical)
1119 rxdw0 |= CP_RX_STATUS_PAM;
1121 /* set received size */
1122 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1125 /* update ring data */
1126 val = cpu_to_le32(rxdw0);
1127 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1128 val = cpu_to_le32(rxdw1);
1129 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1131 /* update tally counter */
1132 ++s->tally_counters.RxOk;
1134 /* seek to next Rx descriptor */
1135 if (rxdw0 & CP_RX_EOR)
1137 s->currCPlusRxDesc = 0;
1141 ++s->currCPlusRxDesc;
1144 DPRINTF("done C+ Rx mode ----------------\n");
1149 DPRINTF("in ring Rx mode ================\n");
1151 /* begin ring receiver mode */
1152 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1154 /* if receiver buffer is empty then avail == 0 */
1156 if (avail != 0 && size + 8 >= avail)
1158 DPRINTF("rx overflow: rx buffer length %d head 0x%04x "
1159 "read 0x%04x === available 0x%04x need 0x%04x\n",
1160 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8);
1162 s->IntrStatus |= RxOverflow;
1164 rtl8139_update_irq(s);
1168 packet_header |= RxStatusOK;
1170 packet_header |= (((size+4) << 16) & 0xffff0000);
1173 uint32_t val = cpu_to_le32(packet_header);
1175 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1177 rtl8139_write_buffer(s, buf, size);
1179 /* write checksum */
1180 val = cpu_to_le32(crc32(0, buf, size));
1181 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1183 /* correct buffer write pointer */
1184 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1186 /* now we can signal we have received something */
1188 DPRINTF("received: rx buffer length %d head 0x%04x read 0x%04x\n",
1189 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
1192 s->IntrStatus |= RxOK;
1196 rtl8139_update_irq(s);
1202 static ssize_t rtl8139_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
1204 return rtl8139_do_receive(nc, buf, size, 1);
1207 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1209 s->RxBufferSize = bufferSize;
1214 static void rtl8139_reset(DeviceState *d)
1216 RTL8139State *s = container_of(d, RTL8139State, dev.qdev);
1219 /* restore MAC address */
1220 memcpy(s->phys, s->conf.macaddr.a, 6);
1222 /* reset interrupt mask */
1226 rtl8139_update_irq(s);
1228 /* mark all status registers as owned by host */
1229 for (i = 0; i < 4; ++i)
1231 s->TxStatus[i] = TxHostOwns;
1235 s->currCPlusRxDesc = 0;
1236 s->currCPlusTxDesc = 0;
1238 s->RxRingAddrLO = 0;
1239 s->RxRingAddrHI = 0;
1243 rtl8139_reset_rxring(s, 8192);
1249 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1250 s->clock_enabled = 0;
1252 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1253 s->clock_enabled = 1;
1256 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1258 /* set initial state data */
1259 s->Config0 = 0x0; /* No boot ROM */
1260 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1261 s->Config3 = 0x1; /* fast back-to-back compatible */
1264 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1266 s->CpCmd = 0x0; /* reset C+ mode */
1267 s->cplus_enabled = 0;
1270 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1271 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1272 s->BasicModeCtrl = 0x1000; // autonegotiation
1274 s->BasicModeStatus = 0x7809;
1275 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1276 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1277 s->BasicModeStatus |= 0x0004; /* link is up */
1279 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1280 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1281 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1283 /* also reset timer and disable timer interrupt */
1288 /* reset tally counters */
1289 RTL8139TallyCounters_clear(&s->tally_counters);
1292 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1296 counters->TxERR = 0;
1297 counters->RxERR = 0;
1298 counters->MissPkt = 0;
1300 counters->Tx1Col = 0;
1301 counters->TxMCol = 0;
1302 counters->RxOkPhy = 0;
1303 counters->RxOkBrd = 0;
1304 counters->RxOkMul = 0;
1305 counters->TxAbt = 0;
1306 counters->TxUndrn = 0;
1309 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1315 val64 = cpu_to_le64(tally_counters->TxOk);
1316 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1318 val64 = cpu_to_le64(tally_counters->RxOk);
1319 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1321 val64 = cpu_to_le64(tally_counters->TxERR);
1322 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1324 val32 = cpu_to_le32(tally_counters->RxERR);
1325 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1327 val16 = cpu_to_le16(tally_counters->MissPkt);
1328 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1330 val16 = cpu_to_le16(tally_counters->FAE);
1331 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1333 val32 = cpu_to_le32(tally_counters->Tx1Col);
1334 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1336 val32 = cpu_to_le32(tally_counters->TxMCol);
1337 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1339 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1340 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1342 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1343 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1345 val32 = cpu_to_le32(tally_counters->RxOkMul);
1346 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1348 val16 = cpu_to_le16(tally_counters->TxAbt);
1349 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1351 val16 = cpu_to_le16(tally_counters->TxUndrn);
1352 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1355 /* Loads values of tally counters from VM state file */
1357 static const VMStateDescription vmstate_tally_counters = {
1358 .name = "tally_counters",
1360 .minimum_version_id = 1,
1361 .minimum_version_id_old = 1,
1362 .fields = (VMStateField []) {
1363 VMSTATE_UINT64(TxOk, RTL8139TallyCounters),
1364 VMSTATE_UINT64(RxOk, RTL8139TallyCounters),
1365 VMSTATE_UINT64(TxERR, RTL8139TallyCounters),
1366 VMSTATE_UINT32(RxERR, RTL8139TallyCounters),
1367 VMSTATE_UINT16(MissPkt, RTL8139TallyCounters),
1368 VMSTATE_UINT16(FAE, RTL8139TallyCounters),
1369 VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters),
1370 VMSTATE_UINT32(TxMCol, RTL8139TallyCounters),
1371 VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters),
1372 VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters),
1373 VMSTATE_UINT16(TxAbt, RTL8139TallyCounters),
1374 VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters),
1375 VMSTATE_END_OF_LIST()
1379 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1383 DPRINTF("ChipCmd write val=0x%08x\n", val);
1387 DPRINTF("ChipCmd reset\n");
1388 rtl8139_reset(&s->dev.qdev);
1392 DPRINTF("ChipCmd enable receiver\n");
1394 s->currCPlusRxDesc = 0;
1398 DPRINTF("ChipCmd enable transmitter\n");
1400 s->currCPlusTxDesc = 0;
1403 /* mask unwriteable bits */
1404 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1406 /* Deassert reset pin before next read */
1409 s->bChipCmdState = val;
1412 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1414 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1418 DPRINTF("receiver buffer data available 0x%04x\n", unread);
1422 DPRINTF("receiver buffer is empty\n");
1427 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1429 uint32_t ret = s->bChipCmdState;
1431 if (rtl8139_RxBufferEmpty(s))
1434 DPRINTF("ChipCmd read val=0x%04x\n", ret);
1439 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1443 DPRINTF("C+ command register write(w) val=0x%04x\n", val);
1445 s->cplus_enabled = 1;
1447 /* mask unwriteable bits */
1448 val = SET_MASKED(val, 0xff84, s->CpCmd);
1453 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1455 uint32_t ret = s->CpCmd;
1457 DPRINTF("C+ command register read(w) val=0x%04x\n", ret);
1462 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1464 DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val);
1467 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1471 DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret);
1476 static int rtl8139_config_writeable(RTL8139State *s)
1478 if (s->Cfg9346 & Cfg9346_Unlock)
1483 DPRINTF("Configuration registers are write-protected\n");
1488 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1492 DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val);
1494 /* mask unwriteable bits */
1495 uint32_t mask = 0x4cff;
1497 if (1 || !rtl8139_config_writeable(s))
1499 /* Speed setting and autonegotiation enable bits are read-only */
1501 /* Duplex mode setting is read-only */
1505 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1507 s->BasicModeCtrl = val;
1510 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1512 uint32_t ret = s->BasicModeCtrl;
1514 DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret);
1519 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1523 DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val);
1525 /* mask unwriteable bits */
1526 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1528 s->BasicModeStatus = val;
1531 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1533 uint32_t ret = s->BasicModeStatus;
1535 DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret);
1540 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1544 DPRINTF("Cfg9346 write val=0x%02x\n", val);
1546 /* mask unwriteable bits */
1547 val = SET_MASKED(val, 0x31, s->Cfg9346);
1549 uint32_t opmode = val & 0xc0;
1550 uint32_t eeprom_val = val & 0xf;
1552 if (opmode == 0x80) {
1554 int eecs = (eeprom_val & 0x08)?1:0;
1555 int eesk = (eeprom_val & 0x04)?1:0;
1556 int eedi = (eeprom_val & 0x02)?1:0;
1557 prom9346_set_wire(s, eecs, eesk, eedi);
1558 } else if (opmode == 0x40) {
1561 rtl8139_reset(&s->dev.qdev);
1567 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1569 uint32_t ret = s->Cfg9346;
1571 uint32_t opmode = ret & 0xc0;
1576 int eedo = prom9346_get_wire(s);
1587 DPRINTF("Cfg9346 read val=0x%02x\n", ret);
1592 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1596 DPRINTF("Config0 write val=0x%02x\n", val);
1598 if (!rtl8139_config_writeable(s))
1601 /* mask unwriteable 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_writeable(s))
1625 /* mask unwriteable bits */
1626 val = SET_MASKED(val, 0xC, s->Config1);
1631 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1633 uint32_t ret = s->Config1;
1635 DPRINTF("Config1 read val=0x%02x\n", ret);
1640 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1644 DPRINTF("Config3 write val=0x%02x\n", val);
1646 if (!rtl8139_config_writeable(s))
1649 /* mask unwriteable bits */
1650 val = SET_MASKED(val, 0x8F, s->Config3);
1655 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1657 uint32_t ret = s->Config3;
1659 DPRINTF("Config3 read val=0x%02x\n", ret);
1664 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1668 DPRINTF("Config4 write val=0x%02x\n", val);
1670 if (!rtl8139_config_writeable(s))
1673 /* mask unwriteable bits */
1674 val = SET_MASKED(val, 0x0a, s->Config4);
1679 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1681 uint32_t ret = s->Config4;
1683 DPRINTF("Config4 read val=0x%02x\n", ret);
1688 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1692 DPRINTF("Config5 write val=0x%02x\n", val);
1694 /* mask unwriteable bits */
1695 val = SET_MASKED(val, 0x80, s->Config5);
1700 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1702 uint32_t ret = s->Config5;
1704 DPRINTF("Config5 read val=0x%02x\n", ret);
1709 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1711 if (!rtl8139_transmitter_enabled(s))
1713 DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val);
1717 DPRINTF("TxConfig write val=0x%08x\n", val);
1719 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1724 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1726 DPRINTF("RTL8139C TxConfig via write(b) val=0x%02x\n", val);
1728 uint32_t tc = s->TxConfig;
1730 tc |= (val & 0x000000FF);
1731 rtl8139_TxConfig_write(s, tc);
1734 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1736 uint32_t ret = s->TxConfig;
1738 DPRINTF("TxConfig read val=0x%04x\n", ret);
1743 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1745 DPRINTF("RxConfig write val=0x%08x\n", val);
1747 /* mask unwriteable bits */
1748 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1752 /* reset buffer size and read/write pointers */
1753 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1755 DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize);
1758 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1760 uint32_t ret = s->RxConfig;
1762 DPRINTF("RxConfig read val=0x%08x\n", ret);
1767 static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
1768 int do_interrupt, const uint8_t *dot1q_buf)
1770 struct iovec *iov = NULL;
1774 DPRINTF("+++ empty ethernet frame\n");
1778 if (dot1q_buf && size >= ETHER_ADDR_LEN * 2) {
1779 iov = (struct iovec[3]) {
1780 { .iov_base = buf, .iov_len = ETHER_ADDR_LEN * 2 },
1781 { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN },
1782 { .iov_base = buf + ETHER_ADDR_LEN * 2,
1783 .iov_len = size - ETHER_ADDR_LEN * 2 },
1787 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1793 buf2_size = iov_size(iov, 3);
1794 buf2 = qemu_malloc(buf2_size);
1795 iov_to_buf(iov, 3, buf2, 0, buf2_size);
1799 DPRINTF("+++ transmit loopback mode\n");
1800 rtl8139_do_receive(&s->nic->nc, buf, size, do_interrupt);
1809 qemu_sendv_packet(&s->nic->nc, iov, 3);
1811 qemu_send_packet(&s->nic->nc, buf, size);
1816 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1818 if (!rtl8139_transmitter_enabled(s))
1820 DPRINTF("+++ cannot transmit from descriptor %d: transmitter "
1821 "disabled\n", descriptor);
1825 if (s->TxStatus[descriptor] & TxHostOwns)
1827 DPRINTF("+++ cannot transmit from descriptor %d: owned by host "
1828 "(%08x)\n", descriptor, s->TxStatus[descriptor]);
1832 DPRINTF("+++ transmitting from descriptor %d\n", descriptor);
1834 int txsize = s->TxStatus[descriptor] & 0x1fff;
1835 uint8_t txbuffer[0x2000];
1837 DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n",
1838 txsize, s->TxAddr[descriptor]);
1840 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1842 /* Mark descriptor as transferred */
1843 s->TxStatus[descriptor] |= TxHostOwns;
1844 s->TxStatus[descriptor] |= TxStatOK;
1846 rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL);
1848 DPRINTF("+++ transmitted %d bytes from descriptor %d\n", txsize,
1851 /* update interrupt */
1852 s->IntrStatus |= TxOK;
1853 rtl8139_update_irq(s);
1858 /* structures and macros for task offloading */
1859 typedef struct ip_header
1861 uint8_t ip_ver_len; /* version and header length */
1862 uint8_t ip_tos; /* type of service */
1863 uint16_t ip_len; /* total length */
1864 uint16_t ip_id; /* identification */
1865 uint16_t ip_off; /* fragment offset field */
1866 uint8_t ip_ttl; /* time to live */
1867 uint8_t ip_p; /* protocol */
1868 uint16_t ip_sum; /* checksum */
1869 uint32_t ip_src,ip_dst; /* source and dest address */
1872 #define IP_HEADER_VERSION_4 4
1873 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1874 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1876 typedef struct tcp_header
1878 uint16_t th_sport; /* source port */
1879 uint16_t th_dport; /* destination port */
1880 uint32_t th_seq; /* sequence number */
1881 uint32_t th_ack; /* acknowledgement number */
1882 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1883 uint16_t th_win; /* window */
1884 uint16_t th_sum; /* checksum */
1885 uint16_t th_urp; /* urgent pointer */
1888 typedef struct udp_header
1890 uint16_t uh_sport; /* source port */
1891 uint16_t uh_dport; /* destination port */
1892 uint16_t uh_ulen; /* udp length */
1893 uint16_t uh_sum; /* udp checksum */
1896 typedef struct ip_pseudo_header
1902 uint16_t ip_payload;
1905 #define IP_PROTO_TCP 6
1906 #define IP_PROTO_UDP 17
1908 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1909 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1910 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1912 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1914 #define TCP_FLAG_FIN 0x01
1915 #define TCP_FLAG_PUSH 0x08
1917 /* produces ones' complement sum of data */
1918 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1920 uint32_t result = 0;
1922 for (; len > 1; data+=2, len-=2)
1924 result += *(uint16_t*)data;
1927 /* add the remainder byte */
1930 uint8_t odd[2] = {*data, 0};
1931 result += *(uint16_t*)odd;
1935 result = (result & 0xffff) + (result >> 16);
1940 static uint16_t ip_checksum(void *data, size_t len)
1942 return ~ones_complement_sum((uint8_t*)data, len);
1945 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1947 if (!rtl8139_transmitter_enabled(s))
1949 DPRINTF("+++ C+ mode: transmitter disabled\n");
1953 if (!rtl8139_cp_transmitter_enabled(s))
1955 DPRINTF("+++ C+ mode: C+ transmitter disabled\n");
1959 int descriptor = s->currCPlusTxDesc;
1961 target_phys_addr_t cplus_tx_ring_desc =
1962 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1964 /* Normal priority ring */
1965 cplus_tx_ring_desc += 16 * descriptor;
1967 DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at "
1968 "%08x0x%08x = 0x"TARGET_FMT_plx"\n", descriptor, s->TxAddr[1],
1969 s->TxAddr[0], cplus_tx_ring_desc);
1971 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1973 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1974 txdw0 = le32_to_cpu(val);
1975 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1976 txdw1 = le32_to_cpu(val);
1977 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1978 txbufLO = le32_to_cpu(val);
1979 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1980 txbufHI = le32_to_cpu(val);
1982 DPRINTF("+++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor,
1983 txdw0, txdw1, txbufLO, txbufHI);
1985 /* w0 ownership flag */
1986 #define CP_TX_OWN (1<<31)
1987 /* w0 end of ring flag */
1988 #define CP_TX_EOR (1<<30)
1989 /* first segment of received packet flag */
1990 #define CP_TX_FS (1<<29)
1991 /* last segment of received packet flag */
1992 #define CP_TX_LS (1<<28)
1993 /* large send packet flag */
1994 #define CP_TX_LGSEN (1<<27)
1995 /* large send MSS mask, bits 16...25 */
1996 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1998 /* IP checksum offload flag */
1999 #define CP_TX_IPCS (1<<18)
2000 /* UDP checksum offload flag */
2001 #define CP_TX_UDPCS (1<<17)
2002 /* TCP checksum offload flag */
2003 #define CP_TX_TCPCS (1<<16)
2005 /* w0 bits 0...15 : buffer size */
2006 #define CP_TX_BUFFER_SIZE (1<<16)
2007 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
2008 /* w1 add tag flag */
2009 #define CP_TX_TAGC (1<<17)
2010 /* w1 bits 0...15 : VLAN tag (big endian) */
2011 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
2012 /* w2 low 32bit of Rx buffer ptr */
2013 /* w3 high 32bit of Rx buffer ptr */
2015 /* set after transmission */
2016 /* FIFO underrun flag */
2017 #define CP_TX_STATUS_UNF (1<<25)
2018 /* transmit error summary flag, valid if set any of three below */
2019 #define CP_TX_STATUS_TES (1<<23)
2020 /* out-of-window collision flag */
2021 #define CP_TX_STATUS_OWC (1<<22)
2022 /* link failure flag */
2023 #define CP_TX_STATUS_LNKF (1<<21)
2024 /* excessive collisions flag */
2025 #define CP_TX_STATUS_EXC (1<<20)
2027 if (!(txdw0 & CP_TX_OWN))
2029 DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor);
2033 DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor);
2035 if (txdw0 & CP_TX_FS)
2037 DPRINTF("+++ C+ Tx mode : descriptor %d is first segment "
2038 "descriptor\n", descriptor);
2040 /* reset internal buffer offset */
2041 s->cplus_txbuffer_offset = 0;
2044 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
2045 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
2047 /* make sure we have enough space to assemble the packet */
2048 if (!s->cplus_txbuffer)
2050 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2051 s->cplus_txbuffer = qemu_malloc(s->cplus_txbuffer_len);
2052 s->cplus_txbuffer_offset = 0;
2054 DPRINTF("+++ C+ mode transmission buffer allocated space %d\n",
2055 s->cplus_txbuffer_len);
2058 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2060 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2061 s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2063 DPRINTF("+++ C+ mode transmission buffer space changed to %d\n",
2064 s->cplus_txbuffer_len);
2067 if (!s->cplus_txbuffer)
2071 DPRINTF("+++ C+ mode transmiter failed to reallocate %d bytes\n",
2072 s->cplus_txbuffer_len);
2074 /* update tally counter */
2075 ++s->tally_counters.TxERR;
2076 ++s->tally_counters.TxAbt;
2081 /* append more data to the packet */
2083 DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at "
2084 TARGET_FMT_plx" to offset %d\n", txsize, tx_addr,
2085 s->cplus_txbuffer_offset);
2087 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2088 s->cplus_txbuffer_offset += txsize;
2090 /* seek to next Rx descriptor */
2091 if (txdw0 & CP_TX_EOR)
2093 s->currCPlusTxDesc = 0;
2097 ++s->currCPlusTxDesc;
2098 if (s->currCPlusTxDesc >= 64)
2099 s->currCPlusTxDesc = 0;
2102 /* transfer ownership to target */
2103 txdw0 &= ~CP_RX_OWN;
2105 /* reset error indicator bits */
2106 txdw0 &= ~CP_TX_STATUS_UNF;
2107 txdw0 &= ~CP_TX_STATUS_TES;
2108 txdw0 &= ~CP_TX_STATUS_OWC;
2109 txdw0 &= ~CP_TX_STATUS_LNKF;
2110 txdw0 &= ~CP_TX_STATUS_EXC;
2112 /* update ring data */
2113 val = cpu_to_le32(txdw0);
2114 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2116 /* Now decide if descriptor being processed is holding the last segment of packet */
2117 if (txdw0 & CP_TX_LS)
2119 uint8_t dot1q_buffer_space[VLAN_HLEN];
2120 uint16_t *dot1q_buffer;
2122 DPRINTF("+++ C+ Tx mode : descriptor %d is last segment descriptor\n",
2125 /* can transfer fully assembled packet */
2127 uint8_t *saved_buffer = s->cplus_txbuffer;
2128 int saved_size = s->cplus_txbuffer_offset;
2129 int saved_buffer_len = s->cplus_txbuffer_len;
2131 /* create vlan tag */
2132 if (txdw1 & CP_TX_TAGC) {
2133 /* the vlan tag is in BE byte order in the descriptor
2134 * BE + le_to_cpu() + ~swap()~ = cpu */
2135 DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n",
2136 bswap16(txdw1 & CP_TX_VLAN_TAG_MASK));
2138 dot1q_buffer = (uint16_t *) dot1q_buffer_space;
2139 dot1q_buffer[0] = cpu_to_be16(ETH_P_8021Q);
2140 /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */
2141 dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK);
2143 dot1q_buffer = NULL;
2146 /* reset the card space to protect from recursive call */
2147 s->cplus_txbuffer = NULL;
2148 s->cplus_txbuffer_offset = 0;
2149 s->cplus_txbuffer_len = 0;
2151 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2153 DPRINTF("+++ C+ mode offloaded task checksum\n");
2155 /* ip packet header */
2156 ip_header *ip = NULL;
2158 uint8_t ip_protocol = 0;
2159 uint16_t ip_data_len = 0;
2161 uint8_t *eth_payload_data = NULL;
2162 size_t eth_payload_len = 0;
2164 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2165 if (proto == ETH_P_IP)
2167 DPRINTF("+++ C+ mode has IP packet\n");
2170 eth_payload_data = saved_buffer + ETH_HLEN;
2171 eth_payload_len = saved_size - ETH_HLEN;
2173 ip = (ip_header*)eth_payload_data;
2175 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2176 DPRINTF("+++ C+ mode packet has bad IP version %d "
2177 "expected %d\n", IP_HEADER_VERSION(ip),
2178 IP_HEADER_VERSION_4);
2181 hlen = IP_HEADER_LENGTH(ip);
2182 ip_protocol = ip->ip_p;
2183 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2189 if (txdw0 & CP_TX_IPCS)
2191 DPRINTF("+++ C+ mode need IP checksum\n");
2193 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2194 /* bad packet header len */
2195 /* or packet too short */
2200 ip->ip_sum = ip_checksum(ip, hlen);
2201 DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n",
2206 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2208 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2210 DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d "
2211 "frame data %d specified MSS=%d\n", ETH_MTU,
2212 ip_data_len, saved_size - ETH_HLEN, large_send_mss);
2214 int tcp_send_offset = 0;
2217 /* maximum IP header length is 60 bytes */
2218 uint8_t saved_ip_header[60];
2220 /* save IP header template; data area is used in tcp checksum calculation */
2221 memcpy(saved_ip_header, eth_payload_data, hlen);
2223 /* a placeholder for checksum calculation routine in tcp case */
2224 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2225 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2227 /* pointer to TCP header */
2228 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2230 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2232 /* ETH_MTU = ip header len + tcp header len + payload */
2233 int tcp_data_len = ip_data_len - tcp_hlen;
2234 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2236 DPRINTF("+++ C+ mode TSO IP data len %d TCP hlen %d TCP "
2237 "data len %d TCP chunk size %d\n", ip_data_len,
2238 tcp_hlen, tcp_data_len, tcp_chunk_size);
2240 /* note the cycle below overwrites IP header data,
2241 but restores it from saved_ip_header before sending packet */
2243 int is_last_frame = 0;
2245 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2247 uint16_t chunk_size = tcp_chunk_size;
2249 /* check if this is the last frame */
2250 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2253 chunk_size = tcp_data_len - tcp_send_offset;
2256 DPRINTF("+++ C+ mode TSO TCP seqno %08x\n",
2257 be32_to_cpu(p_tcp_hdr->th_seq));
2259 /* add 4 TCP pseudoheader fields */
2260 /* copy IP source and destination fields */
2261 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2263 DPRINTF("+++ C+ mode TSO calculating TCP checksum for "
2264 "packet with %d bytes data\n", tcp_hlen +
2267 if (tcp_send_offset)
2269 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2272 /* keep PUSH and FIN flags only for the last frame */
2275 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2278 /* recalculate TCP checksum */
2279 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2280 p_tcpip_hdr->zeros = 0;
2281 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2282 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2284 p_tcp_hdr->th_sum = 0;
2286 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2287 DPRINTF("+++ C+ mode TSO TCP checksum %04x\n",
2290 p_tcp_hdr->th_sum = tcp_checksum;
2292 /* restore IP header */
2293 memcpy(eth_payload_data, saved_ip_header, hlen);
2295 /* set IP data length and recalculate IP checksum */
2296 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2298 /* increment IP id for subsequent frames */
2299 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2302 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2303 DPRINTF("+++ C+ mode TSO IP header len=%d "
2304 "checksum=%04x\n", hlen, ip->ip_sum);
2306 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2307 DPRINTF("+++ C+ mode TSO transferring packet size "
2308 "%d\n", tso_send_size);
2309 rtl8139_transfer_frame(s, saved_buffer, tso_send_size,
2310 0, (uint8_t *) dot1q_buffer);
2312 /* add transferred count to TCP sequence number */
2313 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2317 /* Stop sending this frame */
2320 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2322 DPRINTF("+++ C+ mode need TCP or UDP checksum\n");
2324 /* maximum IP header length is 60 bytes */
2325 uint8_t saved_ip_header[60];
2326 memcpy(saved_ip_header, eth_payload_data, hlen);
2328 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2329 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2331 /* add 4 TCP pseudoheader fields */
2332 /* copy IP source and destination fields */
2333 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2335 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2337 DPRINTF("+++ C+ mode calculating TCP checksum for "
2338 "packet with %d bytes data\n", ip_data_len);
2340 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2341 p_tcpip_hdr->zeros = 0;
2342 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2343 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2345 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2347 p_tcp_hdr->th_sum = 0;
2349 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2350 DPRINTF("+++ C+ mode TCP checksum %04x\n",
2353 p_tcp_hdr->th_sum = tcp_checksum;
2355 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2357 DPRINTF("+++ C+ mode calculating UDP checksum for "
2358 "packet with %d bytes data\n", ip_data_len);
2360 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2361 p_udpip_hdr->zeros = 0;
2362 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2363 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2365 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2367 p_udp_hdr->uh_sum = 0;
2369 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2370 DPRINTF("+++ C+ mode UDP checksum %04x\n",
2373 p_udp_hdr->uh_sum = udp_checksum;
2376 /* restore IP header */
2377 memcpy(eth_payload_data, saved_ip_header, hlen);
2382 /* update tally counter */
2383 ++s->tally_counters.TxOk;
2385 DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size);
2387 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1,
2388 (uint8_t *) dot1q_buffer);
2390 /* restore card space if there was no recursion and reset offset */
2391 if (!s->cplus_txbuffer)
2393 s->cplus_txbuffer = saved_buffer;
2394 s->cplus_txbuffer_len = saved_buffer_len;
2395 s->cplus_txbuffer_offset = 0;
2399 qemu_free(saved_buffer);
2404 DPRINTF("+++ C+ mode transmission continue to next descriptor\n");
2410 static void rtl8139_cplus_transmit(RTL8139State *s)
2414 while (rtl8139_cplus_transmit_one(s))
2419 /* Mark transfer completed */
2422 DPRINTF("C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2423 s->currCPlusTxDesc);
2427 /* update interrupt status */
2428 s->IntrStatus |= TxOK;
2429 rtl8139_update_irq(s);
2433 static void rtl8139_transmit(RTL8139State *s)
2435 int descriptor = s->currTxDesc, txcount = 0;
2438 if (rtl8139_transmit_one(s, descriptor))
2445 /* Mark transfer completed */
2448 DPRINTF("transmitter queue stalled, current TxDesc = %d\n",
2453 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2456 int descriptor = txRegOffset/4;
2458 /* handle C+ transmit mode register configuration */
2460 if (s->cplus_enabled)
2462 DPRINTF("RTL8139C+ DTCCR write offset=0x%x val=0x%08x "
2463 "descriptor=%d\n", txRegOffset, val, descriptor);
2465 /* handle Dump Tally Counters command */
2466 s->TxStatus[descriptor] = val;
2468 if (descriptor == 0 && (val & 0x8))
2470 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2472 /* dump tally counters to specified memory location */
2473 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2475 /* mark dump completed */
2476 s->TxStatus[0] &= ~0x8;
2482 DPRINTF("TxStatus write offset=0x%x val=0x%08x descriptor=%d\n",
2483 txRegOffset, val, descriptor);
2485 /* mask only reserved bits */
2486 val &= ~0xff00c000; /* these bits are reset on write */
2487 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2489 s->TxStatus[descriptor] = val;
2491 /* attempt to start transmission */
2492 rtl8139_transmit(s);
2495 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2497 uint32_t ret = s->TxStatus[txRegOffset/4];
2499 DPRINTF("TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret);
2504 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2508 /* Simulate TSAD, it is read only anyway */
2510 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2511 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2512 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2513 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2515 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2516 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2517 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2518 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2520 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2521 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2522 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2523 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2525 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2526 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2527 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2528 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2531 DPRINTF("TSAD read val=0x%04x\n", ret);
2536 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2538 uint16_t ret = s->CSCR;
2540 DPRINTF("CSCR read val=0x%04x\n", ret);
2545 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2547 DPRINTF("TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val);
2549 s->TxAddr[txAddrOffset/4] = val;
2552 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2554 uint32_t ret = s->TxAddr[txAddrOffset/4];
2556 DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret);
2561 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2563 DPRINTF("RxBufPtr write val=0x%04x\n", val);
2565 /* this value is off by 16 */
2566 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2568 DPRINTF(" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2569 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
2572 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2574 /* this value is off by 16 */
2575 uint32_t ret = s->RxBufPtr - 0x10;
2577 DPRINTF("RxBufPtr read val=0x%04x\n", ret);
2582 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2584 /* this value is NOT off by 16 */
2585 uint32_t ret = s->RxBufAddr;
2587 DPRINTF("RxBufAddr read val=0x%04x\n", ret);
2592 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2594 DPRINTF("RxBuf write val=0x%08x\n", val);
2598 /* may need to reset rxring here */
2601 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2603 uint32_t ret = s->RxBuf;
2605 DPRINTF("RxBuf read val=0x%08x\n", ret);
2610 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2612 DPRINTF("IntrMask write(w) val=0x%04x\n", val);
2614 /* mask unwriteable bits */
2615 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2619 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2620 rtl8139_update_irq(s);
2624 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2626 uint32_t ret = s->IntrMask;
2628 DPRINTF("IntrMask read(w) val=0x%04x\n", ret);
2633 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2635 DPRINTF("IntrStatus write(w) val=0x%04x\n", val);
2639 /* writing to ISR has no effect */
2644 uint16_t newStatus = s->IntrStatus & ~val;
2646 /* mask unwriteable bits */
2647 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2649 /* writing 1 to interrupt status register bit clears it */
2651 rtl8139_update_irq(s);
2653 s->IntrStatus = newStatus;
2655 * Computing if we miss an interrupt here is not that correct but
2656 * considered that we should have had already an interrupt
2657 * and probably emulated is slower is better to assume this resetting was
2658 * done before testing on previous rtl8139_update_irq lead to IRQ loosing
2660 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2661 rtl8139_update_irq(s);
2666 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2668 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2670 uint32_t ret = s->IntrStatus;
2672 DPRINTF("IntrStatus read(w) val=0x%04x\n", ret);
2676 /* reading ISR clears all interrupts */
2679 rtl8139_update_irq(s);
2686 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2688 DPRINTF("MultiIntr write(w) val=0x%04x\n", val);
2690 /* mask unwriteable bits */
2691 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2696 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2698 uint32_t ret = s->MultiIntr;
2700 DPRINTF("MultiIntr read(w) val=0x%04x\n", ret);
2705 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2707 RTL8139State *s = opaque;
2713 case MAC0 ... MAC0+5:
2714 s->phys[addr - MAC0] = val;
2716 case MAC0+6 ... MAC0+7:
2719 case MAR0 ... MAR0+7:
2720 s->mult[addr - MAR0] = val;
2723 rtl8139_ChipCmd_write(s, val);
2726 rtl8139_Cfg9346_write(s, val);
2728 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2729 rtl8139_TxConfig_writeb(s, val);
2732 rtl8139_Config0_write(s, val);
2735 rtl8139_Config1_write(s, val);
2738 rtl8139_Config3_write(s, val);
2741 rtl8139_Config4_write(s, val);
2744 rtl8139_Config5_write(s, val);
2748 DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n",
2753 DPRINTF("HltClk write val=0x%08x\n", val);
2756 s->clock_enabled = 1;
2758 else if (val == 'H')
2760 s->clock_enabled = 0;
2765 DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val);
2770 DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val);
2773 DPRINTF("C+ TxPoll high priority transmission (not "
2775 //rtl8139_cplus_transmit(s);
2779 DPRINTF("C+ TxPoll normal priority transmission\n");
2780 rtl8139_cplus_transmit(s);
2786 DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
2792 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2794 RTL8139State *s = opaque;
2801 rtl8139_IntrMask_write(s, val);
2805 rtl8139_IntrStatus_write(s, val);
2809 rtl8139_MultiIntr_write(s, val);
2813 rtl8139_RxBufPtr_write(s, val);
2817 rtl8139_BasicModeCtrl_write(s, val);
2819 case BasicModeStatus:
2820 rtl8139_BasicModeStatus_write(s, val);
2823 DPRINTF("NWayAdvert write(w) val=0x%04x\n", val);
2824 s->NWayAdvert = val;
2827 DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val);
2830 DPRINTF("NWayExpansion write(w) val=0x%04x\n", val);
2831 s->NWayExpansion = val;
2835 rtl8139_CpCmd_write(s, val);
2839 rtl8139_IntrMitigate_write(s, val);
2843 DPRINTF("ioport write(w) addr=0x%x val=0x%04x via write(b)\n",
2846 rtl8139_io_writeb(opaque, addr, val & 0xff);
2847 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2852 static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time)
2854 int64_t pci_time, next_time;
2857 DPRINTF("entered rtl8139_set_next_tctr_time\n");
2859 if (s->TimerExpire && current_time >= s->TimerExpire) {
2860 s->IntrStatus |= PCSTimeout;
2861 rtl8139_update_irq(s);
2864 /* Set QEMU timer only if needed that is
2865 * - TimerInt <> 0 (we have a timer)
2866 * - mask = 1 (we want an interrupt timer)
2867 * - irq = 0 (irq is not already active)
2868 * If any of above change we need to compute timer again
2869 * Also we must check if timer is passed without QEMU timer
2876 pci_time = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
2877 get_ticks_per_sec());
2878 low_pci = pci_time & 0xffffffff;
2879 pci_time = pci_time - low_pci + s->TimerInt;
2880 if (low_pci >= s->TimerInt) {
2881 pci_time += 0x100000000LL;
2883 next_time = s->TCTR_base + muldiv64(pci_time, get_ticks_per_sec(),
2885 s->TimerExpire = next_time;
2887 if ((s->IntrMask & PCSTimeout) != 0 && (s->IntrStatus & PCSTimeout) == 0) {
2888 qemu_mod_timer(s->timer, next_time);
2892 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2894 RTL8139State *s = opaque;
2901 DPRINTF("RxMissed clearing on write\n");
2906 rtl8139_TxConfig_write(s, val);
2910 rtl8139_RxConfig_write(s, val);
2913 case TxStatus0 ... TxStatus0+4*4-1:
2914 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2917 case TxAddr0 ... TxAddr0+4*4-1:
2918 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2922 rtl8139_RxBuf_write(s, val);
2926 DPRINTF("C+ RxRing low bits write val=0x%08x\n", val);
2927 s->RxRingAddrLO = val;
2931 DPRINTF("C+ RxRing high bits write val=0x%08x\n", val);
2932 s->RxRingAddrHI = val;
2936 DPRINTF("TCTR Timer reset on write\n");
2937 s->TCTR_base = qemu_get_clock_ns(vm_clock);
2938 rtl8139_set_next_tctr_time(s, s->TCTR_base);
2942 DPRINTF("FlashReg TimerInt write val=0x%08x\n", val);
2943 if (s->TimerInt != val) {
2945 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
2950 DPRINTF("ioport write(l) addr=0x%x val=0x%08x via write(b)\n",
2952 rtl8139_io_writeb(opaque, addr, val & 0xff);
2953 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2954 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2955 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2960 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2962 RTL8139State *s = opaque;
2969 case MAC0 ... MAC0+5:
2970 ret = s->phys[addr - MAC0];
2972 case MAC0+6 ... MAC0+7:
2975 case MAR0 ... MAR0+7:
2976 ret = s->mult[addr - MAR0];
2979 ret = rtl8139_ChipCmd_read(s);
2982 ret = rtl8139_Cfg9346_read(s);
2985 ret = rtl8139_Config0_read(s);
2988 ret = rtl8139_Config1_read(s);
2991 ret = rtl8139_Config3_read(s);
2994 ret = rtl8139_Config4_read(s);
2997 ret = rtl8139_Config5_read(s);
3002 DPRINTF("MediaStatus read 0x%x\n", ret);
3006 ret = s->clock_enabled;
3007 DPRINTF("HltClk read 0x%x\n", ret);
3011 ret = RTL8139_PCI_REVID;
3012 DPRINTF("PCI Revision ID read 0x%x\n", ret);
3017 DPRINTF("C+ TxThresh read(b) val=0x%02x\n", ret);
3020 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
3021 ret = s->TxConfig >> 24;
3022 DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret);
3026 DPRINTF("not implemented read(b) addr=0x%x\n", addr);
3034 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
3036 RTL8139State *s = opaque;
3039 addr &= 0xfe; /* mask lower bit */
3044 ret = rtl8139_IntrMask_read(s);
3048 ret = rtl8139_IntrStatus_read(s);
3052 ret = rtl8139_MultiIntr_read(s);
3056 ret = rtl8139_RxBufPtr_read(s);
3060 ret = rtl8139_RxBufAddr_read(s);
3064 ret = rtl8139_BasicModeCtrl_read(s);
3066 case BasicModeStatus:
3067 ret = rtl8139_BasicModeStatus_read(s);
3070 ret = s->NWayAdvert;
3071 DPRINTF("NWayAdvert read(w) val=0x%04x\n", ret);
3075 DPRINTF("NWayLPAR read(w) val=0x%04x\n", ret);
3078 ret = s->NWayExpansion;
3079 DPRINTF("NWayExpansion read(w) val=0x%04x\n", ret);
3083 ret = rtl8139_CpCmd_read(s);
3087 ret = rtl8139_IntrMitigate_read(s);
3091 ret = rtl8139_TSAD_read(s);
3095 ret = rtl8139_CSCR_read(s);
3099 DPRINTF("ioport read(w) addr=0x%x via read(b)\n", addr);
3101 ret = rtl8139_io_readb(opaque, addr);
3102 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3104 DPRINTF("ioport read(w) addr=0x%x val=0x%04x\n", addr, ret);
3111 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
3113 RTL8139State *s = opaque;
3116 addr &= 0xfc; /* also mask low 2 bits */
3123 DPRINTF("RxMissed read val=0x%08x\n", ret);
3127 ret = rtl8139_TxConfig_read(s);
3131 ret = rtl8139_RxConfig_read(s);
3134 case TxStatus0 ... TxStatus0+4*4-1:
3135 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
3138 case TxAddr0 ... TxAddr0+4*4-1:
3139 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
3143 ret = rtl8139_RxBuf_read(s);
3147 ret = s->RxRingAddrLO;
3148 DPRINTF("C+ RxRing low bits read val=0x%08x\n", ret);
3152 ret = s->RxRingAddrHI;
3153 DPRINTF("C+ RxRing high bits read val=0x%08x\n", ret);
3157 ret = muldiv64(qemu_get_clock_ns(vm_clock) - s->TCTR_base,
3158 PCI_FREQUENCY, get_ticks_per_sec());
3159 DPRINTF("TCTR Timer read val=0x%08x\n", ret);
3164 DPRINTF("FlashReg TimerInt read val=0x%08x\n", ret);
3168 DPRINTF("ioport read(l) addr=0x%x via read(b)\n", addr);
3170 ret = rtl8139_io_readb(opaque, addr);
3171 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3172 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3173 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3175 DPRINTF("read(l) addr=0x%x val=%08x\n", addr, ret);
3184 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3186 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3189 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3191 rtl8139_io_writew(opaque, addr & 0xFF, val);
3194 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3196 rtl8139_io_writel(opaque, addr & 0xFF, val);
3199 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3201 return rtl8139_io_readb(opaque, addr & 0xFF);
3204 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3206 return rtl8139_io_readw(opaque, addr & 0xFF);
3209 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3211 return rtl8139_io_readl(opaque, addr & 0xFF);
3216 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3218 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3221 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3223 rtl8139_io_writew(opaque, addr & 0xFF, val);
3226 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3228 rtl8139_io_writel(opaque, addr & 0xFF, val);
3231 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3233 return rtl8139_io_readb(opaque, addr & 0xFF);
3236 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3238 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3242 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3244 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3248 static int rtl8139_post_load(void *opaque, int version_id)
3250 RTL8139State* s = opaque;
3251 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3252 if (version_id < 4) {
3253 s->cplus_enabled = s->CpCmd != 0;
3259 static bool rtl8139_hotplug_ready_needed(void *opaque)
3261 return qdev_machine_modified();
3264 static const VMStateDescription vmstate_rtl8139_hotplug_ready ={
3265 .name = "rtl8139/hotplug_ready",
3267 .minimum_version_id = 1,
3268 .minimum_version_id_old = 1,
3269 .fields = (VMStateField []) {
3270 VMSTATE_END_OF_LIST()
3274 static void rtl8139_pre_save(void *opaque)
3276 RTL8139State* s = opaque;
3277 int64_t current_time = qemu_get_clock_ns(vm_clock);
3279 /* set IntrStatus correctly */
3280 rtl8139_set_next_tctr_time(s, current_time);
3281 s->TCTR = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
3282 get_ticks_per_sec());
3283 s->rtl8139_mmio_io_addr_dummy = s->rtl8139_mmio_io_addr;
3286 static const VMStateDescription vmstate_rtl8139 = {
3289 .minimum_version_id = 3,
3290 .minimum_version_id_old = 3,
3291 .post_load = rtl8139_post_load,
3292 .pre_save = rtl8139_pre_save,
3293 .fields = (VMStateField []) {
3294 VMSTATE_PCI_DEVICE(dev, RTL8139State),
3295 VMSTATE_PARTIAL_BUFFER(phys, RTL8139State, 6),
3296 VMSTATE_BUFFER(mult, RTL8139State),
3297 VMSTATE_UINT32_ARRAY(TxStatus, RTL8139State, 4),
3298 VMSTATE_UINT32_ARRAY(TxAddr, RTL8139State, 4),
3300 VMSTATE_UINT32(RxBuf, RTL8139State),
3301 VMSTATE_UINT32(RxBufferSize, RTL8139State),
3302 VMSTATE_UINT32(RxBufPtr, RTL8139State),
3303 VMSTATE_UINT32(RxBufAddr, RTL8139State),
3305 VMSTATE_UINT16(IntrStatus, RTL8139State),
3306 VMSTATE_UINT16(IntrMask, RTL8139State),
3308 VMSTATE_UINT32(TxConfig, RTL8139State),
3309 VMSTATE_UINT32(RxConfig, RTL8139State),
3310 VMSTATE_UINT32(RxMissed, RTL8139State),
3311 VMSTATE_UINT16(CSCR, RTL8139State),
3313 VMSTATE_UINT8(Cfg9346, RTL8139State),
3314 VMSTATE_UINT8(Config0, RTL8139State),
3315 VMSTATE_UINT8(Config1, RTL8139State),
3316 VMSTATE_UINT8(Config3, RTL8139State),
3317 VMSTATE_UINT8(Config4, RTL8139State),
3318 VMSTATE_UINT8(Config5, RTL8139State),
3320 VMSTATE_UINT8(clock_enabled, RTL8139State),
3321 VMSTATE_UINT8(bChipCmdState, RTL8139State),
3323 VMSTATE_UINT16(MultiIntr, RTL8139State),
3325 VMSTATE_UINT16(BasicModeCtrl, RTL8139State),
3326 VMSTATE_UINT16(BasicModeStatus, RTL8139State),
3327 VMSTATE_UINT16(NWayAdvert, RTL8139State),
3328 VMSTATE_UINT16(NWayLPAR, RTL8139State),
3329 VMSTATE_UINT16(NWayExpansion, RTL8139State),
3331 VMSTATE_UINT16(CpCmd, RTL8139State),
3332 VMSTATE_UINT8(TxThresh, RTL8139State),
3335 VMSTATE_MACADDR(conf.macaddr, RTL8139State),
3336 VMSTATE_INT32(rtl8139_mmio_io_addr_dummy, RTL8139State),
3338 VMSTATE_UINT32(currTxDesc, RTL8139State),
3339 VMSTATE_UINT32(currCPlusRxDesc, RTL8139State),
3340 VMSTATE_UINT32(currCPlusTxDesc, RTL8139State),
3341 VMSTATE_UINT32(RxRingAddrLO, RTL8139State),
3342 VMSTATE_UINT32(RxRingAddrHI, RTL8139State),
3344 VMSTATE_UINT16_ARRAY(eeprom.contents, RTL8139State, EEPROM_9346_SIZE),
3345 VMSTATE_INT32(eeprom.mode, RTL8139State),
3346 VMSTATE_UINT32(eeprom.tick, RTL8139State),
3347 VMSTATE_UINT8(eeprom.address, RTL8139State),
3348 VMSTATE_UINT16(eeprom.input, RTL8139State),
3349 VMSTATE_UINT16(eeprom.output, RTL8139State),
3351 VMSTATE_UINT8(eeprom.eecs, RTL8139State),
3352 VMSTATE_UINT8(eeprom.eesk, RTL8139State),
3353 VMSTATE_UINT8(eeprom.eedi, RTL8139State),
3354 VMSTATE_UINT8(eeprom.eedo, RTL8139State),
3356 VMSTATE_UINT32(TCTR, RTL8139State),
3357 VMSTATE_UINT32(TimerInt, RTL8139State),
3358 VMSTATE_INT64(TCTR_base, RTL8139State),
3360 VMSTATE_STRUCT(tally_counters, RTL8139State, 0,
3361 vmstate_tally_counters, RTL8139TallyCounters),
3363 VMSTATE_UINT32_V(cplus_enabled, RTL8139State, 4),
3364 VMSTATE_END_OF_LIST()
3366 .subsections = (VMStateSubsection []) {
3368 .vmsd = &vmstate_rtl8139_hotplug_ready,
3369 .needed = rtl8139_hotplug_ready_needed,
3376 /***********************************************************/
3377 /* PCI RTL8139 definitions */
3379 static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num,
3380 pcibus_t addr, pcibus_t size, int type)
3382 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3384 cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr);
3387 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3388 pcibus_t addr, pcibus_t size, int type)
3390 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3392 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3393 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3395 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3396 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3398 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3399 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3402 static CPUReadMemoryFunc * const rtl8139_mmio_read[3] = {
3408 static CPUWriteMemoryFunc * const rtl8139_mmio_write[3] = {
3409 rtl8139_mmio_writeb,
3410 rtl8139_mmio_writew,
3411 rtl8139_mmio_writel,
3414 static void rtl8139_timer(void *opaque)
3416 RTL8139State *s = opaque;
3418 if (!s->clock_enabled)
3420 DPRINTF(">>> timer: clock is not running\n");
3424 s->IntrStatus |= PCSTimeout;
3425 rtl8139_update_irq(s);
3426 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3429 static void rtl8139_cleanup(VLANClientState *nc)
3431 RTL8139State *s = DO_UPCAST(NICState, nc, nc)->opaque;
3436 static int pci_rtl8139_uninit(PCIDevice *dev)
3438 RTL8139State *s = DO_UPCAST(RTL8139State, dev, dev);
3440 cpu_unregister_io_memory(s->rtl8139_mmio_io_addr);
3441 if (s->cplus_txbuffer) {
3442 qemu_free(s->cplus_txbuffer);
3443 s->cplus_txbuffer = NULL;
3445 qemu_del_timer(s->timer);
3446 qemu_free_timer(s->timer);
3447 qemu_del_vlan_client(&s->nic->nc);
3451 static NetClientInfo net_rtl8139_info = {
3452 .type = NET_CLIENT_TYPE_NIC,
3453 .size = sizeof(NICState),
3454 .can_receive = rtl8139_can_receive,
3455 .receive = rtl8139_receive,
3456 .cleanup = rtl8139_cleanup,
3459 static int pci_rtl8139_init(PCIDevice *dev)
3461 RTL8139State * s = DO_UPCAST(RTL8139State, dev, dev);
3464 pci_conf = s->dev.config;
3465 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK);
3466 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8139);
3467 pci_conf[PCI_REVISION_ID] = RTL8139_PCI_REVID; /* >=0x20 is for 8139C+ */
3468 pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET);
3469 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin 0 */
3470 /* TODO: start of capability list, but no capability
3471 * list bit in status register, and offset 0xdc seems unused. */
3472 pci_conf[PCI_CAPABILITY_LIST] = 0xdc;
3474 /* I/O handler for memory-mapped I/O */
3475 s->rtl8139_mmio_io_addr =
3476 cpu_register_io_memory(rtl8139_mmio_read, rtl8139_mmio_write, s,
3477 DEVICE_LITTLE_ENDIAN);
3479 pci_register_bar(&s->dev, 0, 0x100,
3480 PCI_BASE_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3482 pci_register_bar(&s->dev, 1, 0x100,
3483 PCI_BASE_ADDRESS_SPACE_MEMORY, rtl8139_mmio_map);
3485 qemu_macaddr_default_if_unset(&s->conf.macaddr);
3487 /* prepare eeprom */
3488 s->eeprom.contents[0] = 0x8129;
3490 /* PCI vendor and device ID should be mirrored here */
3491 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
3492 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
3494 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
3495 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
3496 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
3498 s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf,
3499 dev->qdev.info->name, dev->qdev.id, s);
3500 qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a);
3502 s->cplus_txbuffer = NULL;
3503 s->cplus_txbuffer_len = 0;
3504 s->cplus_txbuffer_offset = 0;
3507 s->timer = qemu_new_timer_ns(vm_clock, rtl8139_timer, s);
3508 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
3510 add_boot_device_path(s->conf.bootindex, &dev->qdev, "/ethernet-phy@0");
3515 static PCIDeviceInfo rtl8139_info = {
3516 .qdev.name = "rtl8139",
3517 .qdev.size = sizeof(RTL8139State),
3518 .qdev.reset = rtl8139_reset,
3519 .qdev.vmsd = &vmstate_rtl8139,
3520 .init = pci_rtl8139_init,
3521 .exit = pci_rtl8139_uninit,
3522 .romfile = "pxe-rtl8139.rom",
3523 .qdev.props = (Property[]) {
3524 DEFINE_NIC_PROPERTIES(RTL8139State, conf),
3525 DEFINE_PROP_END_OF_LIST(),
3529 static void rtl8139_register_devices(void)
3531 pci_qdev_register(&rtl8139_info);
3534 device_init(rtl8139_register_devices)