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Fix spelling in comment
[qemu.git] / hw / rtl8139.c
blob83cb1ff70154b3498fad1070bfc1c829b81bdea5
1 /**
2 * QEMU RTL8139 emulation
3 *
4 * Copyright (c) 2006 Igor Kovalenko
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23
24 * Modifications:
25 * 2006-Jan-28 Mark Malakanov : TSAD and CSCR implementation (for Windows driver)
26 *
27 * 2006-Apr-28 Juergen Lock : EEPROM emulation changes for FreeBSD driver
28 * HW revision ID changes for FreeBSD driver
29 *
30 * 2006-Jul-01 Igor Kovalenko : Implemented loopback mode for FreeBSD driver
31 * Corrected packet transfer reassembly routine for 8139C+ mode
32 * Rearranged debugging print statements
33 * Implemented PCI timer interrupt (disabled by default)
34 * Implemented Tally Counters, increased VM load/save version
35 * Implemented IP/TCP/UDP checksum task offloading
36 *
37 * 2006-Jul-04 Igor Kovalenko : Implemented TCP segmentation offloading
38 * Fixed MTU=1500 for produced ethernet frames
39 *
40 * 2006-Jul-09 Igor Kovalenko : Fixed TCP header length calculation while processing
41 * segmentation offloading
42 * Removed slirp.h dependency
43 * Added rx/tx buffer reset when enabling rx/tx operation
44 */
45
46 #include "hw.h"
47 #include "pci.h"
48 #include "qemu-timer.h"
49 #include "net.h"
50
51 /* debug RTL8139 card */
52 //#define DEBUG_RTL8139 1
53
54 #define PCI_FREQUENCY 33000000L
55
56 /* debug RTL8139 card C+ mode only */
57 //#define DEBUG_RTL8139CP 1
58
59 /* Calculate CRCs properly on Rx packets */
60 #define RTL8139_CALCULATE_RXCRC 1
61
62 /* Uncomment to enable on-board timer interrupts */
63 //#define RTL8139_ONBOARD_TIMER 1
64
65 #if defined(RTL8139_CALCULATE_RXCRC)
66 /* For crc32 */
67 #include <zlib.h>
68 #endif
69
70 #define SET_MASKED(input, mask, curr) \
71 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) )
72
73 /* arg % size for size which is a power of 2 */
74 #define MOD2(input, size) \
75 ( ( input ) & ( size - 1 ) )
76
77 #if defined (DEBUG_RTL8139)
78 # define DEBUG_PRINT(x) do { printf x ; } while (0)
79 #else
80 # define DEBUG_PRINT(x)
81 #endif
82
83 /* Symbolic offsets to registers. */
84 enum RTL8139_registers {
85 MAC0 = 0, /* Ethernet hardware address. */
86 MAR0 = 8, /* Multicast filter. */
87 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
88 /* Dump Tally Conter control register(64bit). C+ mode only */
89 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
90 RxBuf = 0x30,
91 ChipCmd = 0x37,
92 RxBufPtr = 0x38,
93 RxBufAddr = 0x3A,
94 IntrMask = 0x3C,
95 IntrStatus = 0x3E,
96 TxConfig = 0x40,
97 RxConfig = 0x44,
98 Timer = 0x48, /* A general-purpose counter. */
99 RxMissed = 0x4C, /* 24 bits valid, write clears. */
100 Cfg9346 = 0x50,
101 Config0 = 0x51,
102 Config1 = 0x52,
103 FlashReg = 0x54,
104 MediaStatus = 0x58,
105 Config3 = 0x59,
106 Config4 = 0x5A, /* absent on RTL-8139A */
107 HltClk = 0x5B,
108 MultiIntr = 0x5C,
109 PCIRevisionID = 0x5E,
110 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
111 BasicModeCtrl = 0x62,
112 BasicModeStatus = 0x64,
113 NWayAdvert = 0x66,
114 NWayLPAR = 0x68,
115 NWayExpansion = 0x6A,
116 /* Undocumented registers, but required for proper operation. */
117 FIFOTMS = 0x70, /* FIFO Control and test. */
118 CSCR = 0x74, /* Chip Status and Configuration Register. */
119 PARA78 = 0x78,
120 PARA7c = 0x7c, /* Magic transceiver parameter register. */
121 Config5 = 0xD8, /* absent on RTL-8139A */
122 /* C+ mode */
123 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
124 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
125 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
126 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
127 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
128 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
129 TxThresh = 0xEC, /* Early Tx threshold */
130 };
131
132 enum ClearBitMasks {
133 MultiIntrClear = 0xF000,
134 ChipCmdClear = 0xE2,
135 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
136 };
137
138 enum ChipCmdBits {
139 CmdReset = 0x10,
140 CmdRxEnb = 0x08,
141 CmdTxEnb = 0x04,
142 RxBufEmpty = 0x01,
143 };
144
145 /* C+ mode */
146 enum CplusCmdBits {
147 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
148 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
149 CPlusRxEnb = 0x0002,
150 CPlusTxEnb = 0x0001,
151 };
152
153 /* Interrupt register bits, using my own meaningful names. */
154 enum IntrStatusBits {
155 PCIErr = 0x8000,
156 PCSTimeout = 0x4000,
157 RxFIFOOver = 0x40,
158 RxUnderrun = 0x20,
159 RxOverflow = 0x10,
160 TxErr = 0x08,
161 TxOK = 0x04,
162 RxErr = 0x02,
163 RxOK = 0x01,
164
165 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
166 };
167
168 enum TxStatusBits {
169 TxHostOwns = 0x2000,
170 TxUnderrun = 0x4000,
171 TxStatOK = 0x8000,
172 TxOutOfWindow = 0x20000000,
173 TxAborted = 0x40000000,
174 TxCarrierLost = 0x80000000,
175 };
176 enum RxStatusBits {
177 RxMulticast = 0x8000,
178 RxPhysical = 0x4000,
179 RxBroadcast = 0x2000,
180 RxBadSymbol = 0x0020,
181 RxRunt = 0x0010,
182 RxTooLong = 0x0008,
183 RxCRCErr = 0x0004,
184 RxBadAlign = 0x0002,
185 RxStatusOK = 0x0001,
186 };
187
188 /* Bits in RxConfig. */
189 enum rx_mode_bits {
190 AcceptErr = 0x20,
191 AcceptRunt = 0x10,
192 AcceptBroadcast = 0x08,
193 AcceptMulticast = 0x04,
194 AcceptMyPhys = 0x02,
195 AcceptAllPhys = 0x01,
196 };
197
198 /* Bits in TxConfig. */
199 enum tx_config_bits {
200
201 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
202 TxIFGShift = 24,
203 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
204 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
205 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
206 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
207
208 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
209 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
210 TxClearAbt = (1 << 0), /* Clear abort (WO) */
211 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
212 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
213
214 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
215 };
216
217
218 /* Transmit Status of All Descriptors (TSAD) Register */
219 enum TSAD_bits {
220 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
221 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
222 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
223 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
224 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
225 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
226 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
227 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
228 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
229 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
230 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
231 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
232 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
233 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
234 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
235 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
236 };
237
238
239 /* Bits in Config1 */
240 enum Config1Bits {
241 Cfg1_PM_Enable = 0x01,
242 Cfg1_VPD_Enable = 0x02,
243 Cfg1_PIO = 0x04,
244 Cfg1_MMIO = 0x08,
245 LWAKE = 0x10, /* not on 8139, 8139A */
246 Cfg1_Driver_Load = 0x20,
247 Cfg1_LED0 = 0x40,
248 Cfg1_LED1 = 0x80,
249 SLEEP = (1 << 1), /* only on 8139, 8139A */
250 PWRDN = (1 << 0), /* only on 8139, 8139A */
251 };
252
253 /* Bits in Config3 */
254 enum Config3Bits {
255 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
256 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
257 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
258 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
259 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
260 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
261 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
262 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
263 };
264
265 /* Bits in Config4 */
266 enum Config4Bits {
267 LWPTN = (1 << 2), /* not on 8139, 8139A */
268 };
269
270 /* Bits in Config5 */
271 enum Config5Bits {
272 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
273 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
274 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
275 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
276 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
277 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
278 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
279 };
280
281 enum RxConfigBits {
282 /* rx fifo threshold */
283 RxCfgFIFOShift = 13,
284 RxCfgFIFONone = (7 << RxCfgFIFOShift),
285
286 /* Max DMA burst */
287 RxCfgDMAShift = 8,
288 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
289
290 /* rx ring buffer length */
291 RxCfgRcv8K = 0,
292 RxCfgRcv16K = (1 << 11),
293 RxCfgRcv32K = (1 << 12),
294 RxCfgRcv64K = (1 << 11) | (1 << 12),
295
296 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
297 RxNoWrap = (1 << 7),
298 };
299
300 /* Twister tuning parameters from RealTek.
301 Completely undocumented, but required to tune bad links on some boards. */
302 /*
303 enum CSCRBits {
304 CSCR_LinkOKBit = 0x0400,
305 CSCR_LinkChangeBit = 0x0800,
306 CSCR_LinkStatusBits = 0x0f000,
307 CSCR_LinkDownOffCmd = 0x003c0,
308 CSCR_LinkDownCmd = 0x0f3c0,
309 */
310 enum CSCRBits {
311 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
312 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*/
313 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
314 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
315 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
316 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
317 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*/
318 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
319 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
320 };
321
322 enum Cfg9346Bits {
323 Cfg9346_Lock = 0x00,
324 Cfg9346_Unlock = 0xC0,
325 };
326
327 typedef enum {
328 CH_8139 = 0,
329 CH_8139_K,
330 CH_8139A,
331 CH_8139A_G,
332 CH_8139B,
333 CH_8130,
334 CH_8139C,
335 CH_8100,
336 CH_8100B_8139D,
337 CH_8101,
338 } chip_t;
339
340 enum chip_flags {
341 HasHltClk = (1 << 0),
342 HasLWake = (1 << 1),
343 };
344
345 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
346 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
347 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
348
349 #define RTL8139_PCI_REVID_8139 0x10
350 #define RTL8139_PCI_REVID_8139CPLUS 0x20
351
352 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
353
354 /* Size is 64 * 16bit words */
355 #define EEPROM_9346_ADDR_BITS 6
356 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
357 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
358
359 enum Chip9346Operation
360 {
361 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
362 Chip9346_op_read = 0x80, /* 10 AAAAAA */
363 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
364 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
365 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
366 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
367 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
368 };
369
370 enum Chip9346Mode
371 {
372 Chip9346_none = 0,
373 Chip9346_enter_command_mode,
374 Chip9346_read_command,
375 Chip9346_data_read, /* from output register */
376 Chip9346_data_write, /* to input register, then to contents at specified address */
377 Chip9346_data_write_all, /* to input register, then filling contents */
378 };
379
380 typedef struct EEprom9346
381 {
382 uint16_t contents[EEPROM_9346_SIZE];
383 int mode;
384 uint32_t tick;
385 uint8_t address;
386 uint16_t input;
387 uint16_t output;
388
389 uint8_t eecs;
390 uint8_t eesk;
391 uint8_t eedi;
392 uint8_t eedo;
393 } EEprom9346;
394
395 typedef struct RTL8139TallyCounters
396 {
397 /* Tally counters */
398 uint64_t TxOk;
399 uint64_t RxOk;
400 uint64_t TxERR;
401 uint32_t RxERR;
402 uint16_t MissPkt;
403 uint16_t FAE;
404 uint32_t Tx1Col;
405 uint32_t TxMCol;
406 uint64_t RxOkPhy;
407 uint64_t RxOkBrd;
408 uint32_t RxOkMul;
409 uint16_t TxAbt;
410 uint16_t TxUndrn;
411 } RTL8139TallyCounters;
412
413 /* Clears all tally counters */
414 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
415
416 /* Writes tally counters to specified physical memory address */
417 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* counters);
418
419 /* Loads values of tally counters from VM state file */
420 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters);
421
422 /* Saves values of tally counters to VM state file */
423 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters);
424
425 typedef struct RTL8139State {
426 PCIDevice dev;
427 uint8_t phys[8]; /* mac address */
428 uint8_t mult[8]; /* multicast mask array */
429
430 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
431 uint32_t TxAddr[4]; /* TxAddr0 */
432 uint32_t RxBuf; /* Receive buffer */
433 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
434 uint32_t RxBufPtr;
435 uint32_t RxBufAddr;
436
437 uint16_t IntrStatus;
438 uint16_t IntrMask;
439
440 uint32_t TxConfig;
441 uint32_t RxConfig;
442 uint32_t RxMissed;
443
444 uint16_t CSCR;
445
446 uint8_t Cfg9346;
447 uint8_t Config0;
448 uint8_t Config1;
449 uint8_t Config3;
450 uint8_t Config4;
451 uint8_t Config5;
452
453 uint8_t clock_enabled;
454 uint8_t bChipCmdState;
455
456 uint16_t MultiIntr;
457
458 uint16_t BasicModeCtrl;
459 uint16_t BasicModeStatus;
460 uint16_t NWayAdvert;
461 uint16_t NWayLPAR;
462 uint16_t NWayExpansion;
463
464 uint16_t CpCmd;
465 uint8_t TxThresh;
466
467 VLANClientState *vc;
468 uint8_t macaddr[6];
469 int rtl8139_mmio_io_addr;
470
471 /* C ring mode */
472 uint32_t currTxDesc;
473
474 /* C+ mode */
475 uint32_t cplus_enabled;
476
477 uint32_t currCPlusRxDesc;
478 uint32_t currCPlusTxDesc;
479
480 uint32_t RxRingAddrLO;
481 uint32_t RxRingAddrHI;
482
483 EEprom9346 eeprom;
484
485 uint32_t TCTR;
486 uint32_t TimerInt;
487 int64_t TCTR_base;
488
489 /* Tally counters */
490 RTL8139TallyCounters tally_counters;
491
492 /* Non-persistent data */
493 uint8_t *cplus_txbuffer;
494 int cplus_txbuffer_len;
495 int cplus_txbuffer_offset;
496
497 /* PCI interrupt timer */
498 QEMUTimer *timer;
499
500 } RTL8139State;
501
502 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
503 {
504 DEBUG_PRINT(("RTL8139: eeprom command 0x%02x\n", command));
505
506 switch (command & Chip9346_op_mask)
507 {
508 case Chip9346_op_read:
509 {
510 eeprom->address = command & EEPROM_9346_ADDR_MASK;
511 eeprom->output = eeprom->contents[eeprom->address];
512 eeprom->eedo = 0;
513 eeprom->tick = 0;
514 eeprom->mode = Chip9346_data_read;
515 DEBUG_PRINT(("RTL8139: eeprom read from address 0x%02x data=0x%04x\n",
516 eeprom->address, eeprom->output));
517 }
518 break;
519
520 case Chip9346_op_write:
521 {
522 eeprom->address = command & EEPROM_9346_ADDR_MASK;
523 eeprom->input = 0;
524 eeprom->tick = 0;
525 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
526 DEBUG_PRINT(("RTL8139: eeprom begin write to address 0x%02x\n",
527 eeprom->address));
528 }
529 break;
530 default:
531 eeprom->mode = Chip9346_none;
532 switch (command & Chip9346_op_ext_mask)
533 {
534 case Chip9346_op_write_enable:
535 DEBUG_PRINT(("RTL8139: eeprom write enabled\n"));
536 break;
537 case Chip9346_op_write_all:
538 DEBUG_PRINT(("RTL8139: eeprom begin write all\n"));
539 break;
540 case Chip9346_op_write_disable:
541 DEBUG_PRINT(("RTL8139: eeprom write disabled\n"));
542 break;
543 }
544 break;
545 }
546 }
547
548 static void prom9346_shift_clock(EEprom9346 *eeprom)
549 {
550 int bit = eeprom->eedi?1:0;
551
552 ++ eeprom->tick;
553
554 DEBUG_PRINT(("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, eeprom->eedo));
555
556 switch (eeprom->mode)
557 {
558 case Chip9346_enter_command_mode:
559 if (bit)
560 {
561 eeprom->mode = Chip9346_read_command;
562 eeprom->tick = 0;
563 eeprom->input = 0;
564 DEBUG_PRINT(("eeprom: +++ synchronized, begin command read\n"));
565 }
566 break;
567
568 case Chip9346_read_command:
569 eeprom->input = (eeprom->input << 1) | (bit & 1);
570 if (eeprom->tick == 8)
571 {
572 prom9346_decode_command(eeprom, eeprom->input & 0xff);
573 }
574 break;
575
576 case Chip9346_data_read:
577 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
578 eeprom->output <<= 1;
579 if (eeprom->tick == 16)
580 {
581 #if 1
582 // the FreeBSD drivers (rl and re) don't explicitly toggle
583 // CS between reads (or does setting Cfg9346 to 0 count too?),
584 // so we need to enter wait-for-command state here
585 eeprom->mode = Chip9346_enter_command_mode;
586 eeprom->input = 0;
587 eeprom->tick = 0;
588
589 DEBUG_PRINT(("eeprom: +++ end of read, awaiting next command\n"));
590 #else
591 // original behaviour
592 ++eeprom->address;
593 eeprom->address &= EEPROM_9346_ADDR_MASK;
594 eeprom->output = eeprom->contents[eeprom->address];
595 eeprom->tick = 0;
596
597 DEBUG_PRINT(("eeprom: +++ read next address 0x%02x data=0x%04x\n",
598 eeprom->address, eeprom->output));
599 #endif
600 }
601 break;
602
603 case Chip9346_data_write:
604 eeprom->input = (eeprom->input << 1) | (bit & 1);
605 if (eeprom->tick == 16)
606 {
607 DEBUG_PRINT(("RTL8139: eeprom write to address 0x%02x data=0x%04x\n",
608 eeprom->address, eeprom->input));
609
610 eeprom->contents[eeprom->address] = eeprom->input;
611 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
612 eeprom->tick = 0;
613 eeprom->input = 0;
614 }
615 break;
616
617 case Chip9346_data_write_all:
618 eeprom->input = (eeprom->input << 1) | (bit & 1);
619 if (eeprom->tick == 16)
620 {
621 int i;
622 for (i = 0; i < EEPROM_9346_SIZE; i++)
623 {
624 eeprom->contents[i] = eeprom->input;
625 }
626 DEBUG_PRINT(("RTL8139: eeprom filled with data=0x%04x\n",
627 eeprom->input));
628
629 eeprom->mode = Chip9346_enter_command_mode;
630 eeprom->tick = 0;
631 eeprom->input = 0;
632 }
633 break;
634
635 default:
636 break;
637 }
638 }
639
640 static int prom9346_get_wire(RTL8139State *s)
641 {
642 EEprom9346 *eeprom = &s->eeprom;
643 if (!eeprom->eecs)
644 return 0;
645
646 return eeprom->eedo;
647 }
648
649 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
650 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
651 {
652 EEprom9346 *eeprom = &s->eeprom;
653 uint8_t old_eecs = eeprom->eecs;
654 uint8_t old_eesk = eeprom->eesk;
655
656 eeprom->eecs = eecs;
657 eeprom->eesk = eesk;
658 eeprom->eedi = eedi;
659
660 DEBUG_PRINT(("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n",
661 eeprom->eecs, eeprom->eesk, eeprom->eedi, eeprom->eedo));
662
663 if (!old_eecs && eecs)
664 {
665 /* Synchronize start */
666 eeprom->tick = 0;
667 eeprom->input = 0;
668 eeprom->output = 0;
669 eeprom->mode = Chip9346_enter_command_mode;
670
671 DEBUG_PRINT(("=== eeprom: begin access, enter command mode\n"));
672 }
673
674 if (!eecs)
675 {
676 DEBUG_PRINT(("=== eeprom: end access\n"));
677 return;
678 }
679
680 if (!old_eesk && eesk)
681 {
682 /* SK front rules */
683 prom9346_shift_clock(eeprom);
684 }
685 }
686
687 static void rtl8139_update_irq(RTL8139State *s)
688 {
689 int isr;
690 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
691
692 DEBUG_PRINT(("RTL8139: Set IRQ to %d (%04x %04x)\n",
693 isr ? 1 : 0, s->IntrStatus, s->IntrMask));
694
695 qemu_set_irq(s->dev.irq[0], (isr != 0));
696 }
697
698 #define POLYNOMIAL 0x04c11db6
699
700 /* From FreeBSD */
701 /* XXX: optimize */
702 static int compute_mcast_idx(const uint8_t *ep)
703 {
704 uint32_t crc;
705 int carry, i, j;
706 uint8_t b;
707
708 crc = 0xffffffff;
709 for (i = 0; i < 6; i++) {
710 b = *ep++;
711 for (j = 0; j < 8; j++) {
712 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
713 crc <<= 1;
714 b >>= 1;
715 if (carry)
716 crc = ((crc ^ POLYNOMIAL) | carry);
717 }
718 }
719 return (crc >> 26);
720 }
721
722 static int rtl8139_RxWrap(RTL8139State *s)
723 {
724 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
725 return (s->RxConfig & (1 << 7));
726 }
727
728 static int rtl8139_receiver_enabled(RTL8139State *s)
729 {
730 return s->bChipCmdState & CmdRxEnb;
731 }
732
733 static int rtl8139_transmitter_enabled(RTL8139State *s)
734 {
735 return s->bChipCmdState & CmdTxEnb;
736 }
737
738 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
739 {
740 return s->CpCmd & CPlusRxEnb;
741 }
742
743 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
744 {
745 return s->CpCmd & CPlusTxEnb;
746 }
747
748 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
749 {
750 if (s->RxBufAddr + size > s->RxBufferSize)
751 {
752 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
753
754 /* write packet data */
755 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
756 {
757 DEBUG_PRINT((">>> RTL8139: rx packet wrapped in buffer at %d\n", size-wrapped));
758
759 if (size > wrapped)
760 {
761 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
762 buf, size-wrapped );
763 }
764
765 /* reset buffer pointer */
766 s->RxBufAddr = 0;
767
768 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
769 buf + (size-wrapped), wrapped );
770
771 s->RxBufAddr = wrapped;
772
773 return;
774 }
775 }
776
777 /* non-wrapping path or overwrapping enabled */
778 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
779
780 s->RxBufAddr += size;
781 }
782
783 #define MIN_BUF_SIZE 60
784 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
785 {
786 #if TARGET_PHYS_ADDR_BITS > 32
787 return low | ((target_phys_addr_t)high << 32);
788 #else
789 return low;
790 #endif
791 }
792
793 static int rtl8139_can_receive(VLANClientState *vc)
794 {
795 RTL8139State *s = vc->opaque;
796 int avail;
797
798 /* Receive (drop) packets if card is disabled. */
799 if (!s->clock_enabled)
800 return 1;
801 if (!rtl8139_receiver_enabled(s))
802 return 1;
803
804 if (rtl8139_cp_receiver_enabled(s)) {
805 /* ??? Flow control not implemented in c+ mode.
806 This is a hack to work around slirp deficiencies anyway. */
807 return 1;
808 } else {
809 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
810 s->RxBufferSize);
811 return (avail == 0 || avail >= 1514);
812 }
813 }
814
815 static ssize_t rtl8139_do_receive(VLANClientState *vc, const uint8_t *buf, size_t size_, int do_interrupt)
816 {
817 RTL8139State *s = vc->opaque;
818 int size = size_;
819
820 uint32_t packet_header = 0;
821
822 uint8_t buf1[60];
823 static const uint8_t broadcast_macaddr[6] =
824 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
825
826 DEBUG_PRINT((">>> RTL8139: received len=%d\n", size));
827
828 /* test if board clock is stopped */
829 if (!s->clock_enabled)
830 {
831 DEBUG_PRINT(("RTL8139: stopped ==========================\n"));
832 return -1;
833 }
834
835 /* first check if receiver is enabled */
836
837 if (!rtl8139_receiver_enabled(s))
838 {
839 DEBUG_PRINT(("RTL8139: receiver disabled ================\n"));
840 return -1;
841 }
842
843 /* XXX: check this */
844 if (s->RxConfig & AcceptAllPhys) {
845 /* promiscuous: receive all */
846 DEBUG_PRINT((">>> RTL8139: packet received in promiscuous mode\n"));
847
848 } else {
849 if (!memcmp(buf, broadcast_macaddr, 6)) {
850 /* broadcast address */
851 if (!(s->RxConfig & AcceptBroadcast))
852 {
853 DEBUG_PRINT((">>> RTL8139: broadcast packet rejected\n"));
854
855 /* update tally counter */
856 ++s->tally_counters.RxERR;
857
858 return size;
859 }
860
861 packet_header |= RxBroadcast;
862
863 DEBUG_PRINT((">>> RTL8139: broadcast packet received\n"));
864
865 /* update tally counter */
866 ++s->tally_counters.RxOkBrd;
867
868 } else if (buf[0] & 0x01) {
869 /* multicast */
870 if (!(s->RxConfig & AcceptMulticast))
871 {
872 DEBUG_PRINT((">>> RTL8139: multicast packet rejected\n"));
873
874 /* update tally counter */
875 ++s->tally_counters.RxERR;
876
877 return size;
878 }
879
880 int mcast_idx = compute_mcast_idx(buf);
881
882 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
883 {
884 DEBUG_PRINT((">>> RTL8139: multicast address mismatch\n"));
885
886 /* update tally counter */
887 ++s->tally_counters.RxERR;
888
889 return size;
890 }
891
892 packet_header |= RxMulticast;
893
894 DEBUG_PRINT((">>> RTL8139: multicast packet received\n"));
895
896 /* update tally counter */
897 ++s->tally_counters.RxOkMul;
898
899 } else if (s->phys[0] == buf[0] &&
900 s->phys[1] == buf[1] &&
901 s->phys[2] == buf[2] &&
902 s->phys[3] == buf[3] &&
903 s->phys[4] == buf[4] &&
904 s->phys[5] == buf[5]) {
905 /* match */
906 if (!(s->RxConfig & AcceptMyPhys))
907 {
908 DEBUG_PRINT((">>> RTL8139: rejecting physical address matching packet\n"));
909
910 /* update tally counter */
911 ++s->tally_counters.RxERR;
912
913 return size;
914 }
915
916 packet_header |= RxPhysical;
917
918 DEBUG_PRINT((">>> RTL8139: physical address matching packet received\n"));
919
920 /* update tally counter */
921 ++s->tally_counters.RxOkPhy;
922
923 } else {
924
925 DEBUG_PRINT((">>> RTL8139: unknown packet\n"));
926
927 /* update tally counter */
928 ++s->tally_counters.RxERR;
929
930 return size;
931 }
932 }
933
934 /* if too small buffer, then expand it */
935 if (size < MIN_BUF_SIZE) {
936 memcpy(buf1, buf, size);
937 memset(buf1 + size, 0, MIN_BUF_SIZE - size);
938 buf = buf1;
939 size = MIN_BUF_SIZE;
940 }
941
942 if (rtl8139_cp_receiver_enabled(s))
943 {
944 DEBUG_PRINT(("RTL8139: in C+ Rx mode ================\n"));
945
946 /* begin C+ receiver mode */
947
948 /* w0 ownership flag */
949 #define CP_RX_OWN (1<<31)
950 /* w0 end of ring flag */
951 #define CP_RX_EOR (1<<30)
952 /* w0 bits 0...12 : buffer size */
953 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
954 /* w1 tag available flag */
955 #define CP_RX_TAVA (1<<16)
956 /* w1 bits 0...15 : VLAN tag */
957 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
958 /* w2 low 32bit of Rx buffer ptr */
959 /* w3 high 32bit of Rx buffer ptr */
960
961 int descriptor = s->currCPlusRxDesc;
962 target_phys_addr_t cplus_rx_ring_desc;
963
964 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
965 cplus_rx_ring_desc += 16 * descriptor;
966
967 DEBUG_PRINT(("RTL8139: +++ C+ mode reading RX descriptor %d from host memory at %08x %08x = %016" PRIx64 "\n",
968 descriptor, s->RxRingAddrHI, s->RxRingAddrLO, (uint64_t)cplus_rx_ring_desc));
969
970 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
971
972 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
973 rxdw0 = le32_to_cpu(val);
974 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
975 rxdw1 = le32_to_cpu(val);
976 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
977 rxbufLO = le32_to_cpu(val);
978 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
979 rxbufHI = le32_to_cpu(val);
980
981 DEBUG_PRINT(("RTL8139: +++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
982 descriptor,
983 rxdw0, rxdw1, rxbufLO, rxbufHI));
984
985 if (!(rxdw0 & CP_RX_OWN))
986 {
987 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d is owned by host\n", descriptor));
988
989 s->IntrStatus |= RxOverflow;
990 ++s->RxMissed;
991
992 /* update tally counter */
993 ++s->tally_counters.RxERR;
994 ++s->tally_counters.MissPkt;
995
996 rtl8139_update_irq(s);
997 return size_;
998 }
999
1000 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1001
1002 /* TODO: scatter the packet over available receive ring descriptors space */
1003
1004 if (size+4 > rx_space)
1005 {
1006 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d size %d received %d + 4\n",
1007 descriptor, rx_space, size));
1008
1009 s->IntrStatus |= RxOverflow;
1010 ++s->RxMissed;
1011
1012 /* update tally counter */
1013 ++s->tally_counters.RxERR;
1014 ++s->tally_counters.MissPkt;
1015
1016 rtl8139_update_irq(s);
1017 return size_;
1018 }
1019
1020 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1021
1022 /* receive/copy to target memory */
1023 cpu_physical_memory_write( rx_addr, buf, size );
1024
1025 if (s->CpCmd & CPlusRxChkSum)
1026 {
1027 /* do some packet checksumming */
1028 }
1029
1030 /* write checksum */
1031 #if defined (RTL8139_CALCULATE_RXCRC)
1032 val = cpu_to_le32(crc32(0, buf, size));
1033 #else
1034 val = 0;
1035 #endif
1036 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1037
1038 /* first segment of received packet flag */
1039 #define CP_RX_STATUS_FS (1<<29)
1040 /* last segment of received packet flag */
1041 #define CP_RX_STATUS_LS (1<<28)
1042 /* multicast packet flag */
1043 #define CP_RX_STATUS_MAR (1<<26)
1044 /* physical-matching packet flag */
1045 #define CP_RX_STATUS_PAM (1<<25)
1046 /* broadcast packet flag */
1047 #define CP_RX_STATUS_BAR (1<<24)
1048 /* runt packet flag */
1049 #define CP_RX_STATUS_RUNT (1<<19)
1050 /* crc error flag */
1051 #define CP_RX_STATUS_CRC (1<<18)
1052 /* IP checksum error flag */
1053 #define CP_RX_STATUS_IPF (1<<15)
1054 /* UDP checksum error flag */
1055 #define CP_RX_STATUS_UDPF (1<<14)
1056 /* TCP checksum error flag */
1057 #define CP_RX_STATUS_TCPF (1<<13)
1058
1059 /* transfer ownership to target */
1060 rxdw0 &= ~CP_RX_OWN;
1061
1062 /* set first segment bit */
1063 rxdw0 |= CP_RX_STATUS_FS;
1064
1065 /* set last segment bit */
1066 rxdw0 |= CP_RX_STATUS_LS;
1067
1068 /* set received packet type flags */
1069 if (packet_header & RxBroadcast)
1070 rxdw0 |= CP_RX_STATUS_BAR;
1071 if (packet_header & RxMulticast)
1072 rxdw0 |= CP_RX_STATUS_MAR;
1073 if (packet_header & RxPhysical)
1074 rxdw0 |= CP_RX_STATUS_PAM;
1075
1076 /* set received size */
1077 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1078 rxdw0 |= (size+4);
1079
1080 /* reset VLAN tag flag */
1081 rxdw1 &= ~CP_RX_TAVA;
1082
1083 /* update ring data */
1084 val = cpu_to_le32(rxdw0);
1085 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1086 val = cpu_to_le32(rxdw1);
1087 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1088
1089 /* update tally counter */
1090 ++s->tally_counters.RxOk;
1091
1092 /* seek to next Rx descriptor */
1093 if (rxdw0 & CP_RX_EOR)
1094 {
1095 s->currCPlusRxDesc = 0;
1096 }
1097 else
1098 {
1099 ++s->currCPlusRxDesc;
1100 }
1101
1102 DEBUG_PRINT(("RTL8139: done C+ Rx mode ----------------\n"));
1103
1104 }
1105 else
1106 {
1107 DEBUG_PRINT(("RTL8139: in ring Rx mode ================\n"));
1108
1109 /* begin ring receiver mode */
1110 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1111
1112 /* if receiver buffer is empty then avail == 0 */
1113
1114 if (avail != 0 && size + 8 >= avail)
1115 {
1116 DEBUG_PRINT(("rx overflow: rx buffer length %d head 0x%04x read 0x%04x === available 0x%04x need 0x%04x\n",
1117 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8));
1118
1119 s->IntrStatus |= RxOverflow;
1120 ++s->RxMissed;
1121 rtl8139_update_irq(s);
1122 return size_;
1123 }
1124
1125 packet_header |= RxStatusOK;
1126
1127 packet_header |= (((size+4) << 16) & 0xffff0000);
1128
1129 /* write header */
1130 uint32_t val = cpu_to_le32(packet_header);
1131
1132 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1133
1134 rtl8139_write_buffer(s, buf, size);
1135
1136 /* write checksum */
1137 #if defined (RTL8139_CALCULATE_RXCRC)
1138 val = cpu_to_le32(crc32(0, buf, size));
1139 #else
1140 val = 0;
1141 #endif
1142
1143 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1144
1145 /* correct buffer write pointer */
1146 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1147
1148 /* now we can signal we have received something */
1149
1150 DEBUG_PRINT((" received: rx buffer length %d head 0x%04x read 0x%04x\n",
1151 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
1152 }
1153
1154 s->IntrStatus |= RxOK;
1155
1156 if (do_interrupt)
1157 {
1158 rtl8139_update_irq(s);
1159 }
1160
1161 return size_;
1162 }
1163
1164 static ssize_t rtl8139_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1165 {
1166 return rtl8139_do_receive(vc, buf, size, 1);
1167 }
1168
1169 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1170 {
1171 s->RxBufferSize = bufferSize;
1172 s->RxBufPtr = 0;
1173 s->RxBufAddr = 0;
1174 }
1175
1176 static void rtl8139_reset(void *opaque)
1177 {
1178 RTL8139State *s = opaque;
1179 int i;
1180
1181 /* restore MAC address */
1182 memcpy(s->phys, s->macaddr, 6);
1183
1184 /* reset interrupt mask */
1185 s->IntrStatus = 0;
1186 s->IntrMask = 0;
1187
1188 rtl8139_update_irq(s);
1189
1190 /* prepare eeprom */
1191 s->eeprom.contents[0] = 0x8129;
1192 #if 1
1193 // PCI vendor and device ID should be mirrored here
1194 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
1195 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
1196 #endif
1197
1198 s->eeprom.contents[7] = s->macaddr[0] | s->macaddr[1] << 8;
1199 s->eeprom.contents[8] = s->macaddr[2] | s->macaddr[3] << 8;
1200 s->eeprom.contents[9] = s->macaddr[4] | s->macaddr[5] << 8;
1201
1202 /* mark all status registers as owned by host */
1203 for (i = 0; i < 4; ++i)
1204 {
1205 s->TxStatus[i] = TxHostOwns;
1206 }
1207
1208 s->currTxDesc = 0;
1209 s->currCPlusRxDesc = 0;
1210 s->currCPlusTxDesc = 0;
1211
1212 s->RxRingAddrLO = 0;
1213 s->RxRingAddrHI = 0;
1214
1215 s->RxBuf = 0;
1216
1217 rtl8139_reset_rxring(s, 8192);
1218
1219 /* ACK the reset */
1220 s->TxConfig = 0;
1221
1222 #if 0
1223 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1224 s->clock_enabled = 0;
1225 #else
1226 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1227 s->clock_enabled = 1;
1228 #endif
1229
1230 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1231
1232 /* set initial state data */
1233 s->Config0 = 0x0; /* No boot ROM */
1234 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1235 s->Config3 = 0x1; /* fast back-to-back compatible */
1236 s->Config5 = 0x0;
1237
1238 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1239
1240 s->CpCmd = 0x0; /* reset C+ mode */
1241 s->cplus_enabled = 0;
1242
1243
1244 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1245 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1246 s->BasicModeCtrl = 0x1000; // autonegotiation
1247
1248 s->BasicModeStatus = 0x7809;
1249 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1250 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1251 s->BasicModeStatus |= 0x0004; /* link is up */
1252
1253 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1254 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1255 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1256
1257 /* also reset timer and disable timer interrupt */
1258 s->TCTR = 0;
1259 s->TimerInt = 0;
1260 s->TCTR_base = 0;
1261
1262 /* reset tally counters */
1263 RTL8139TallyCounters_clear(&s->tally_counters);
1264 }
1265
1266 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1267 {
1268 counters->TxOk = 0;
1269 counters->RxOk = 0;
1270 counters->TxERR = 0;
1271 counters->RxERR = 0;
1272 counters->MissPkt = 0;
1273 counters->FAE = 0;
1274 counters->Tx1Col = 0;
1275 counters->TxMCol = 0;
1276 counters->RxOkPhy = 0;
1277 counters->RxOkBrd = 0;
1278 counters->RxOkMul = 0;
1279 counters->TxAbt = 0;
1280 counters->TxUndrn = 0;
1281 }
1282
1283 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1284 {
1285 uint16_t val16;
1286 uint32_t val32;
1287 uint64_t val64;
1288
1289 val64 = cpu_to_le64(tally_counters->TxOk);
1290 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1291
1292 val64 = cpu_to_le64(tally_counters->RxOk);
1293 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1294
1295 val64 = cpu_to_le64(tally_counters->TxERR);
1296 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1297
1298 val32 = cpu_to_le32(tally_counters->RxERR);
1299 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1300
1301 val16 = cpu_to_le16(tally_counters->MissPkt);
1302 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1303
1304 val16 = cpu_to_le16(tally_counters->FAE);
1305 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1306
1307 val32 = cpu_to_le32(tally_counters->Tx1Col);
1308 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1309
1310 val32 = cpu_to_le32(tally_counters->TxMCol);
1311 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1312
1313 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1314 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1315
1316 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1317 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1318
1319 val32 = cpu_to_le32(tally_counters->RxOkMul);
1320 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1321
1322 val16 = cpu_to_le16(tally_counters->TxAbt);
1323 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1324
1325 val16 = cpu_to_le16(tally_counters->TxUndrn);
1326 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1327 }
1328
1329 /* Loads values of tally counters from VM state file */
1330 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1331 {
1332 qemu_get_be64s(f, &tally_counters->TxOk);
1333 qemu_get_be64s(f, &tally_counters->RxOk);
1334 qemu_get_be64s(f, &tally_counters->TxERR);
1335 qemu_get_be32s(f, &tally_counters->RxERR);
1336 qemu_get_be16s(f, &tally_counters->MissPkt);
1337 qemu_get_be16s(f, &tally_counters->FAE);
1338 qemu_get_be32s(f, &tally_counters->Tx1Col);
1339 qemu_get_be32s(f, &tally_counters->TxMCol);
1340 qemu_get_be64s(f, &tally_counters->RxOkPhy);
1341 qemu_get_be64s(f, &tally_counters->RxOkBrd);
1342 qemu_get_be32s(f, &tally_counters->RxOkMul);
1343 qemu_get_be16s(f, &tally_counters->TxAbt);
1344 qemu_get_be16s(f, &tally_counters->TxUndrn);
1345 }
1346
1347 /* Saves values of tally counters to VM state file */
1348 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1349 {
1350 qemu_put_be64s(f, &tally_counters->TxOk);
1351 qemu_put_be64s(f, &tally_counters->RxOk);
1352 qemu_put_be64s(f, &tally_counters->TxERR);
1353 qemu_put_be32s(f, &tally_counters->RxERR);
1354 qemu_put_be16s(f, &tally_counters->MissPkt);
1355 qemu_put_be16s(f, &tally_counters->FAE);
1356 qemu_put_be32s(f, &tally_counters->Tx1Col);
1357 qemu_put_be32s(f, &tally_counters->TxMCol);
1358 qemu_put_be64s(f, &tally_counters->RxOkPhy);
1359 qemu_put_be64s(f, &tally_counters->RxOkBrd);
1360 qemu_put_be32s(f, &tally_counters->RxOkMul);
1361 qemu_put_be16s(f, &tally_counters->TxAbt);
1362 qemu_put_be16s(f, &tally_counters->TxUndrn);
1363 }
1364
1365 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1366 {
1367 val &= 0xff;
1368
1369 DEBUG_PRINT(("RTL8139: ChipCmd write val=0x%08x\n", val));
1370
1371 if (val & CmdReset)
1372 {
1373 DEBUG_PRINT(("RTL8139: ChipCmd reset\n"));
1374 rtl8139_reset(s);
1375 }
1376 if (val & CmdRxEnb)
1377 {
1378 DEBUG_PRINT(("RTL8139: ChipCmd enable receiver\n"));
1379
1380 s->currCPlusRxDesc = 0;
1381 }
1382 if (val & CmdTxEnb)
1383 {
1384 DEBUG_PRINT(("RTL8139: ChipCmd enable transmitter\n"));
1385
1386 s->currCPlusTxDesc = 0;
1387 }
1388
1389 /* mask unwriteable bits */
1390 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1391
1392 /* Deassert reset pin before next read */
1393 val &= ~CmdReset;
1394
1395 s->bChipCmdState = val;
1396 }
1397
1398 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1399 {
1400 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1401
1402 if (unread != 0)
1403 {
1404 DEBUG_PRINT(("RTL8139: receiver buffer data available 0x%04x\n", unread));
1405 return 0;
1406 }
1407
1408 DEBUG_PRINT(("RTL8139: receiver buffer is empty\n"));
1409
1410 return 1;
1411 }
1412
1413 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1414 {
1415 uint32_t ret = s->bChipCmdState;
1416
1417 if (rtl8139_RxBufferEmpty(s))
1418 ret |= RxBufEmpty;
1419
1420 DEBUG_PRINT(("RTL8139: ChipCmd read val=0x%04x\n", ret));
1421
1422 return ret;
1423 }
1424
1425 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1426 {
1427 val &= 0xffff;
1428
1429 DEBUG_PRINT(("RTL8139C+ command register write(w) val=0x%04x\n", val));
1430
1431 s->cplus_enabled = 1;
1432
1433 /* mask unwriteable bits */
1434 val = SET_MASKED(val, 0xff84, s->CpCmd);
1435
1436 s->CpCmd = val;
1437 }
1438
1439 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1440 {
1441 uint32_t ret = s->CpCmd;
1442
1443 DEBUG_PRINT(("RTL8139C+ command register read(w) val=0x%04x\n", ret));
1444
1445 return ret;
1446 }
1447
1448 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1449 {
1450 DEBUG_PRINT(("RTL8139C+ IntrMitigate register write(w) val=0x%04x\n", val));
1451 }
1452
1453 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1454 {
1455 uint32_t ret = 0;
1456
1457 DEBUG_PRINT(("RTL8139C+ IntrMitigate register read(w) val=0x%04x\n", ret));
1458
1459 return ret;
1460 }
1461
1462 static int rtl8139_config_writeable(RTL8139State *s)
1463 {
1464 if (s->Cfg9346 & Cfg9346_Unlock)
1465 {
1466 return 1;
1467 }
1468
1469 DEBUG_PRINT(("RTL8139: Configuration registers are write-protected\n"));
1470
1471 return 0;
1472 }
1473
1474 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1475 {
1476 val &= 0xffff;
1477
1478 DEBUG_PRINT(("RTL8139: BasicModeCtrl register write(w) val=0x%04x\n", val));
1479
1480 /* mask unwriteable bits */
1481 uint32_t mask = 0x4cff;
1482
1483 if (1 || !rtl8139_config_writeable(s))
1484 {
1485 /* Speed setting and autonegotiation enable bits are read-only */
1486 mask |= 0x3000;
1487 /* Duplex mode setting is read-only */
1488 mask |= 0x0100;
1489 }
1490
1491 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1492
1493 s->BasicModeCtrl = val;
1494 }
1495
1496 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1497 {
1498 uint32_t ret = s->BasicModeCtrl;
1499
1500 DEBUG_PRINT(("RTL8139: BasicModeCtrl register read(w) val=0x%04x\n", ret));
1501
1502 return ret;
1503 }
1504
1505 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1506 {
1507 val &= 0xffff;
1508
1509 DEBUG_PRINT(("RTL8139: BasicModeStatus register write(w) val=0x%04x\n", val));
1510
1511 /* mask unwriteable bits */
1512 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1513
1514 s->BasicModeStatus = val;
1515 }
1516
1517 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1518 {
1519 uint32_t ret = s->BasicModeStatus;
1520
1521 DEBUG_PRINT(("RTL8139: BasicModeStatus register read(w) val=0x%04x\n", ret));
1522
1523 return ret;
1524 }
1525
1526 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1527 {
1528 val &= 0xff;
1529
1530 DEBUG_PRINT(("RTL8139: Cfg9346 write val=0x%02x\n", val));
1531
1532 /* mask unwriteable bits */
1533 val = SET_MASKED(val, 0x31, s->Cfg9346);
1534
1535 uint32_t opmode = val & 0xc0;
1536 uint32_t eeprom_val = val & 0xf;
1537
1538 if (opmode == 0x80) {
1539 /* eeprom access */
1540 int eecs = (eeprom_val & 0x08)?1:0;
1541 int eesk = (eeprom_val & 0x04)?1:0;
1542 int eedi = (eeprom_val & 0x02)?1:0;
1543 prom9346_set_wire(s, eecs, eesk, eedi);
1544 } else if (opmode == 0x40) {
1545 /* Reset. */
1546 val = 0;
1547 rtl8139_reset(s);
1548 }
1549
1550 s->Cfg9346 = val;
1551 }
1552
1553 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1554 {
1555 uint32_t ret = s->Cfg9346;
1556
1557 uint32_t opmode = ret & 0xc0;
1558
1559 if (opmode == 0x80)
1560 {
1561 /* eeprom access */
1562 int eedo = prom9346_get_wire(s);
1563 if (eedo)
1564 {
1565 ret |= 0x01;
1566 }
1567 else
1568 {
1569 ret &= ~0x01;
1570 }
1571 }
1572
1573 DEBUG_PRINT(("RTL8139: Cfg9346 read val=0x%02x\n", ret));
1574
1575 return ret;
1576 }
1577
1578 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1579 {
1580 val &= 0xff;
1581
1582 DEBUG_PRINT(("RTL8139: Config0 write val=0x%02x\n", val));
1583
1584 if (!rtl8139_config_writeable(s))
1585 return;
1586
1587 /* mask unwriteable bits */
1588 val = SET_MASKED(val, 0xf8, s->Config0);
1589
1590 s->Config0 = val;
1591 }
1592
1593 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1594 {
1595 uint32_t ret = s->Config0;
1596
1597 DEBUG_PRINT(("RTL8139: Config0 read val=0x%02x\n", ret));
1598
1599 return ret;
1600 }
1601
1602 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1603 {
1604 val &= 0xff;
1605
1606 DEBUG_PRINT(("RTL8139: Config1 write val=0x%02x\n", val));
1607
1608 if (!rtl8139_config_writeable(s))
1609 return;
1610
1611 /* mask unwriteable bits */
1612 val = SET_MASKED(val, 0xC, s->Config1);
1613
1614 s->Config1 = val;
1615 }
1616
1617 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1618 {
1619 uint32_t ret = s->Config1;
1620
1621 DEBUG_PRINT(("RTL8139: Config1 read val=0x%02x\n", ret));
1622
1623 return ret;
1624 }
1625
1626 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1627 {
1628 val &= 0xff;
1629
1630 DEBUG_PRINT(("RTL8139: Config3 write val=0x%02x\n", val));
1631
1632 if (!rtl8139_config_writeable(s))
1633 return;
1634
1635 /* mask unwriteable bits */
1636 val = SET_MASKED(val, 0x8F, s->Config3);
1637
1638 s->Config3 = val;
1639 }
1640
1641 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1642 {
1643 uint32_t ret = s->Config3;
1644
1645 DEBUG_PRINT(("RTL8139: Config3 read val=0x%02x\n", ret));
1646
1647 return ret;
1648 }
1649
1650 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1651 {
1652 val &= 0xff;
1653
1654 DEBUG_PRINT(("RTL8139: Config4 write val=0x%02x\n", val));
1655
1656 if (!rtl8139_config_writeable(s))
1657 return;
1658
1659 /* mask unwriteable bits */
1660 val = SET_MASKED(val, 0x0a, s->Config4);
1661
1662 s->Config4 = val;
1663 }
1664
1665 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1666 {
1667 uint32_t ret = s->Config4;
1668
1669 DEBUG_PRINT(("RTL8139: Config4 read val=0x%02x\n", ret));
1670
1671 return ret;
1672 }
1673
1674 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1675 {
1676 val &= 0xff;
1677
1678 DEBUG_PRINT(("RTL8139: Config5 write val=0x%02x\n", val));
1679
1680 /* mask unwriteable bits */
1681 val = SET_MASKED(val, 0x80, s->Config5);
1682
1683 s->Config5 = val;
1684 }
1685
1686 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1687 {
1688 uint32_t ret = s->Config5;
1689
1690 DEBUG_PRINT(("RTL8139: Config5 read val=0x%02x\n", ret));
1691
1692 return ret;
1693 }
1694
1695 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1696 {
1697 if (!rtl8139_transmitter_enabled(s))
1698 {
1699 DEBUG_PRINT(("RTL8139: transmitter disabled; no TxConfig write val=0x%08x\n", val));
1700 return;
1701 }
1702
1703 DEBUG_PRINT(("RTL8139: TxConfig write val=0x%08x\n", val));
1704
1705 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1706
1707 s->TxConfig = val;
1708 }
1709
1710 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1711 {
1712 DEBUG_PRINT(("RTL8139C TxConfig via write(b) val=0x%02x\n", val));
1713
1714 uint32_t tc = s->TxConfig;
1715 tc &= 0xFFFFFF00;
1716 tc |= (val & 0x000000FF);
1717 rtl8139_TxConfig_write(s, tc);
1718 }
1719
1720 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1721 {
1722 uint32_t ret = s->TxConfig;
1723
1724 DEBUG_PRINT(("RTL8139: TxConfig read val=0x%04x\n", ret));
1725
1726 return ret;
1727 }
1728
1729 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1730 {
1731 DEBUG_PRINT(("RTL8139: RxConfig write val=0x%08x\n", val));
1732
1733 /* mask unwriteable bits */
1734 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1735
1736 s->RxConfig = val;
1737
1738 /* reset buffer size and read/write pointers */
1739 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1740
1741 DEBUG_PRINT(("RTL8139: RxConfig write reset buffer size to %d\n", s->RxBufferSize));
1742 }
1743
1744 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1745 {
1746 uint32_t ret = s->RxConfig;
1747
1748 DEBUG_PRINT(("RTL8139: RxConfig read val=0x%08x\n", ret));
1749
1750 return ret;
1751 }
1752
1753 static void rtl8139_transfer_frame(RTL8139State *s, const uint8_t *buf, int size, int do_interrupt)
1754 {
1755 if (!size)
1756 {
1757 DEBUG_PRINT(("RTL8139: +++ empty ethernet frame\n"));
1758 return;
1759 }
1760
1761 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1762 {
1763 DEBUG_PRINT(("RTL8139: +++ transmit loopback mode\n"));
1764 rtl8139_do_receive(s->vc, buf, size, do_interrupt);
1765 }
1766 else
1767 {
1768 qemu_send_packet(s->vc, buf, size);
1769 }
1770 }
1771
1772 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1773 {
1774 if (!rtl8139_transmitter_enabled(s))
1775 {
1776 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: transmitter disabled\n",
1777 descriptor));
1778 return 0;
1779 }
1780
1781 if (s->TxStatus[descriptor] & TxHostOwns)
1782 {
1783 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: owned by host (%08x)\n",
1784 descriptor, s->TxStatus[descriptor]));
1785 return 0;
1786 }
1787
1788 DEBUG_PRINT(("RTL8139: +++ transmitting from descriptor %d\n", descriptor));
1789
1790 int txsize = s->TxStatus[descriptor] & 0x1fff;
1791 uint8_t txbuffer[0x2000];
1792
1793 DEBUG_PRINT(("RTL8139: +++ transmit reading %d bytes from host memory at 0x%08x\n",
1794 txsize, s->TxAddr[descriptor]));
1795
1796 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1797
1798 /* Mark descriptor as transferred */
1799 s->TxStatus[descriptor] |= TxHostOwns;
1800 s->TxStatus[descriptor] |= TxStatOK;
1801
1802 rtl8139_transfer_frame(s, txbuffer, txsize, 0);
1803
1804 DEBUG_PRINT(("RTL8139: +++ transmitted %d bytes from descriptor %d\n", txsize, descriptor));
1805
1806 /* update interrupt */
1807 s->IntrStatus |= TxOK;
1808 rtl8139_update_irq(s);
1809
1810 return 1;
1811 }
1812
1813 /* structures and macros for task offloading */
1814 typedef struct ip_header
1815 {
1816 uint8_t ip_ver_len; /* version and header length */
1817 uint8_t ip_tos; /* type of service */
1818 uint16_t ip_len; /* total length */
1819 uint16_t ip_id; /* identification */
1820 uint16_t ip_off; /* fragment offset field */
1821 uint8_t ip_ttl; /* time to live */
1822 uint8_t ip_p; /* protocol */
1823 uint16_t ip_sum; /* checksum */
1824 uint32_t ip_src,ip_dst; /* source and dest address */
1825 } ip_header;
1826
1827 #define IP_HEADER_VERSION_4 4
1828 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1829 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1830
1831 typedef struct tcp_header
1832 {
1833 uint16_t th_sport; /* source port */
1834 uint16_t th_dport; /* destination port */
1835 uint32_t th_seq; /* sequence number */
1836 uint32_t th_ack; /* acknowledgement number */
1837 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1838 uint16_t th_win; /* window */
1839 uint16_t th_sum; /* checksum */
1840 uint16_t th_urp; /* urgent pointer */
1841 } tcp_header;
1842
1843 typedef struct udp_header
1844 {
1845 uint16_t uh_sport; /* source port */
1846 uint16_t uh_dport; /* destination port */
1847 uint16_t uh_ulen; /* udp length */
1848 uint16_t uh_sum; /* udp checksum */
1849 } udp_header;
1850
1851 typedef struct ip_pseudo_header
1852 {
1853 uint32_t ip_src;
1854 uint32_t ip_dst;
1855 uint8_t zeros;
1856 uint8_t ip_proto;
1857 uint16_t ip_payload;
1858 } ip_pseudo_header;
1859
1860 #define IP_PROTO_TCP 6
1861 #define IP_PROTO_UDP 17
1862
1863 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1864 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1865 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1866
1867 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1868
1869 #define TCP_FLAG_FIN 0x01
1870 #define TCP_FLAG_PUSH 0x08
1871
1872 /* produces ones' complement sum of data */
1873 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1874 {
1875 uint32_t result = 0;
1876
1877 for (; len > 1; data+=2, len-=2)
1878 {
1879 result += *(uint16_t*)data;
1880 }
1881
1882 /* add the remainder byte */
1883 if (len)
1884 {
1885 uint8_t odd[2] = {*data, 0};
1886 result += *(uint16_t*)odd;
1887 }
1888
1889 while (result>>16)
1890 result = (result & 0xffff) + (result >> 16);
1891
1892 return result;
1893 }
1894
1895 static uint16_t ip_checksum(void *data, size_t len)
1896 {
1897 return ~ones_complement_sum((uint8_t*)data, len);
1898 }
1899
1900 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1901 {
1902 if (!rtl8139_transmitter_enabled(s))
1903 {
1904 DEBUG_PRINT(("RTL8139: +++ C+ mode: transmitter disabled\n"));
1905 return 0;
1906 }
1907
1908 if (!rtl8139_cp_transmitter_enabled(s))
1909 {
1910 DEBUG_PRINT(("RTL8139: +++ C+ mode: C+ transmitter disabled\n"));
1911 return 0 ;
1912 }
1913
1914 int descriptor = s->currCPlusTxDesc;
1915
1916 target_phys_addr_t cplus_tx_ring_desc =
1917 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1918
1919 /* Normal priority ring */
1920 cplus_tx_ring_desc += 16 * descriptor;
1921
1922 DEBUG_PRINT(("RTL8139: +++ C+ mode reading TX descriptor %d from host memory at %08x0x%08x = 0x%8lx\n",
1923 descriptor, s->TxAddr[1], s->TxAddr[0], cplus_tx_ring_desc));
1924
1925 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1926
1927 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1928 txdw0 = le32_to_cpu(val);
1929 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1930 txdw1 = le32_to_cpu(val);
1931 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1932 txbufLO = le32_to_cpu(val);
1933 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1934 txbufHI = le32_to_cpu(val);
1935
1936 DEBUG_PRINT(("RTL8139: +++ C+ mode TX descriptor %d %08x %08x %08x %08x\n",
1937 descriptor,
1938 txdw0, txdw1, txbufLO, txbufHI));
1939
1940 /* w0 ownership flag */
1941 #define CP_TX_OWN (1<<31)
1942 /* w0 end of ring flag */
1943 #define CP_TX_EOR (1<<30)
1944 /* first segment of received packet flag */
1945 #define CP_TX_FS (1<<29)
1946 /* last segment of received packet flag */
1947 #define CP_TX_LS (1<<28)
1948 /* large send packet flag */
1949 #define CP_TX_LGSEN (1<<27)
1950 /* large send MSS mask, bits 16...25 */
1951 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1952
1953 /* IP checksum offload flag */
1954 #define CP_TX_IPCS (1<<18)
1955 /* UDP checksum offload flag */
1956 #define CP_TX_UDPCS (1<<17)
1957 /* TCP checksum offload flag */
1958 #define CP_TX_TCPCS (1<<16)
1959
1960 /* w0 bits 0...15 : buffer size */
1961 #define CP_TX_BUFFER_SIZE (1<<16)
1962 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
1963 /* w1 tag available flag */
1964 #define CP_RX_TAGC (1<<17)
1965 /* w1 bits 0...15 : VLAN tag */
1966 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
1967 /* w2 low 32bit of Rx buffer ptr */
1968 /* w3 high 32bit of Rx buffer ptr */
1969
1970 /* set after transmission */
1971 /* FIFO underrun flag */
1972 #define CP_TX_STATUS_UNF (1<<25)
1973 /* transmit error summary flag, valid if set any of three below */
1974 #define CP_TX_STATUS_TES (1<<23)
1975 /* out-of-window collision flag */
1976 #define CP_TX_STATUS_OWC (1<<22)
1977 /* link failure flag */
1978 #define CP_TX_STATUS_LNKF (1<<21)
1979 /* excessive collisions flag */
1980 #define CP_TX_STATUS_EXC (1<<20)
1981
1982 if (!(txdw0 & CP_TX_OWN))
1983 {
1984 DEBUG_PRINT(("RTL8139: C+ Tx mode : descriptor %d is owned by host\n", descriptor));
1985 return 0 ;
1986 }
1987
1988 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : transmitting from descriptor %d\n", descriptor));
1989
1990 if (txdw0 & CP_TX_FS)
1991 {
1992 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is first segment descriptor\n", descriptor));
1993
1994 /* reset internal buffer offset */
1995 s->cplus_txbuffer_offset = 0;
1996 }
1997
1998 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
1999 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
2000
2001 /* make sure we have enough space to assemble the packet */
2002 if (!s->cplus_txbuffer)
2003 {
2004 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2005 s->cplus_txbuffer = malloc(s->cplus_txbuffer_len);
2006 s->cplus_txbuffer_offset = 0;
2007
2008 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer allocated space %d\n", s->cplus_txbuffer_len));
2009 }
2010
2011 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2012 {
2013 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2014 s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2015
2016 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer space changed to %d\n", s->cplus_txbuffer_len));
2017 }
2018
2019 if (!s->cplus_txbuffer)
2020 {
2021 /* out of memory */
2022
2023 DEBUG_PRINT(("RTL8139: +++ C+ mode transmiter failed to reallocate %d bytes\n", s->cplus_txbuffer_len));
2024
2025 /* update tally counter */
2026 ++s->tally_counters.TxERR;
2027 ++s->tally_counters.TxAbt;
2028
2029 return 0;
2030 }
2031
2032 /* append more data to the packet */
2033
2034 DEBUG_PRINT(("RTL8139: +++ C+ mode transmit reading %d bytes from host memory at %016" PRIx64 " to offset %d\n",
2035 txsize, (uint64_t)tx_addr, s->cplus_txbuffer_offset));
2036
2037 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2038 s->cplus_txbuffer_offset += txsize;
2039
2040 /* seek to next Rx descriptor */
2041 if (txdw0 & CP_TX_EOR)
2042 {
2043 s->currCPlusTxDesc = 0;
2044 }
2045 else
2046 {
2047 ++s->currCPlusTxDesc;
2048 if (s->currCPlusTxDesc >= 64)
2049 s->currCPlusTxDesc = 0;
2050 }
2051
2052 /* transfer ownership to target */
2053 txdw0 &= ~CP_RX_OWN;
2054
2055 /* reset error indicator bits */
2056 txdw0 &= ~CP_TX_STATUS_UNF;
2057 txdw0 &= ~CP_TX_STATUS_TES;
2058 txdw0 &= ~CP_TX_STATUS_OWC;
2059 txdw0 &= ~CP_TX_STATUS_LNKF;
2060 txdw0 &= ~CP_TX_STATUS_EXC;
2061
2062 /* update ring data */
2063 val = cpu_to_le32(txdw0);
2064 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2065 // val = cpu_to_le32(txdw1);
2066 // cpu_physical_memory_write(cplus_tx_ring_desc+4, &val, 4);
2067
2068 /* Now decide if descriptor being processed is holding the last segment of packet */
2069 if (txdw0 & CP_TX_LS)
2070 {
2071 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is last segment descriptor\n", descriptor));
2072
2073 /* can transfer fully assembled packet */
2074
2075 uint8_t *saved_buffer = s->cplus_txbuffer;
2076 int saved_size = s->cplus_txbuffer_offset;
2077 int saved_buffer_len = s->cplus_txbuffer_len;
2078
2079 /* reset the card space to protect from recursive call */
2080 s->cplus_txbuffer = NULL;
2081 s->cplus_txbuffer_offset = 0;
2082 s->cplus_txbuffer_len = 0;
2083
2084 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2085 {
2086 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task checksum\n"));
2087
2088 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
2089 #define ETH_HLEN 14
2090 #define ETH_MTU 1500
2091
2092 /* ip packet header */
2093 ip_header *ip = NULL;
2094 int hlen = 0;
2095 uint8_t ip_protocol = 0;
2096 uint16_t ip_data_len = 0;
2097
2098 uint8_t *eth_payload_data = NULL;
2099 size_t eth_payload_len = 0;
2100
2101 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2102 if (proto == ETH_P_IP)
2103 {
2104 DEBUG_PRINT(("RTL8139: +++ C+ mode has IP packet\n"));
2105
2106 /* not aligned */
2107 eth_payload_data = saved_buffer + ETH_HLEN;
2108 eth_payload_len = saved_size - ETH_HLEN;
2109
2110 ip = (ip_header*)eth_payload_data;
2111
2112 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2113 DEBUG_PRINT(("RTL8139: +++ C+ mode packet has bad IP version %d expected %d\n", IP_HEADER_VERSION(ip), IP_HEADER_VERSION_4));
2114 ip = NULL;
2115 } else {
2116 hlen = IP_HEADER_LENGTH(ip);
2117 ip_protocol = ip->ip_p;
2118 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2119 }
2120 }
2121
2122 if (ip)
2123 {
2124 if (txdw0 & CP_TX_IPCS)
2125 {
2126 DEBUG_PRINT(("RTL8139: +++ C+ mode need IP checksum\n"));
2127
2128 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2129 /* bad packet header len */
2130 /* or packet too short */
2131 }
2132 else
2133 {
2134 ip->ip_sum = 0;
2135 ip->ip_sum = ip_checksum(ip, hlen);
2136 DEBUG_PRINT(("RTL8139: +++ C+ mode IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2137 }
2138 }
2139
2140 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2141 {
2142 #if defined (DEBUG_RTL8139)
2143 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2144 #endif
2145 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task TSO MTU=%d IP data %d frame data %d specified MSS=%d\n",
2146 ETH_MTU, ip_data_len, saved_size - ETH_HLEN, large_send_mss));
2147
2148 int tcp_send_offset = 0;
2149 int send_count = 0;
2150
2151 /* maximum IP header length is 60 bytes */
2152 uint8_t saved_ip_header[60];
2153
2154 /* save IP header template; data area is used in tcp checksum calculation */
2155 memcpy(saved_ip_header, eth_payload_data, hlen);
2156
2157 /* a placeholder for checksum calculation routine in tcp case */
2158 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2159 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2160
2161 /* pointer to TCP header */
2162 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2163
2164 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2165
2166 /* ETH_MTU = ip header len + tcp header len + payload */
2167 int tcp_data_len = ip_data_len - tcp_hlen;
2168 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2169
2170 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP data len %d TCP hlen %d TCP data len %d TCP chunk size %d\n",
2171 ip_data_len, tcp_hlen, tcp_data_len, tcp_chunk_size));
2172
2173 /* note the cycle below overwrites IP header data,
2174 but restores it from saved_ip_header before sending packet */
2175
2176 int is_last_frame = 0;
2177
2178 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2179 {
2180 uint16_t chunk_size = tcp_chunk_size;
2181
2182 /* check if this is the last frame */
2183 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2184 {
2185 is_last_frame = 1;
2186 chunk_size = tcp_data_len - tcp_send_offset;
2187 }
2188
2189 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP seqno %08x\n", be32_to_cpu(p_tcp_hdr->th_seq)));
2190
2191 /* add 4 TCP pseudoheader fields */
2192 /* copy IP source and destination fields */
2193 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2194
2195 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO calculating TCP checksum for packet with %d bytes data\n", tcp_hlen + chunk_size));
2196
2197 if (tcp_send_offset)
2198 {
2199 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2200 }
2201
2202 /* keep PUSH and FIN flags only for the last frame */
2203 if (!is_last_frame)
2204 {
2205 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2206 }
2207
2208 /* recalculate TCP checksum */
2209 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2210 p_tcpip_hdr->zeros = 0;
2211 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2212 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2213
2214 p_tcp_hdr->th_sum = 0;
2215
2216 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2217 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP checksum %04x\n", tcp_checksum));
2218
2219 p_tcp_hdr->th_sum = tcp_checksum;
2220
2221 /* restore IP header */
2222 memcpy(eth_payload_data, saved_ip_header, hlen);
2223
2224 /* set IP data length and recalculate IP checksum */
2225 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2226
2227 /* increment IP id for subsequent frames */
2228 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2229
2230 ip->ip_sum = 0;
2231 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2232 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2233
2234 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2235 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO transferring packet size %d\n", tso_send_size));
2236 rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 0);
2237
2238 /* add transferred count to TCP sequence number */
2239 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2240 ++send_count;
2241 }
2242
2243 /* Stop sending this frame */
2244 saved_size = 0;
2245 }
2246 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2247 {
2248 DEBUG_PRINT(("RTL8139: +++ C+ mode need TCP or UDP checksum\n"));
2249
2250 /* maximum IP header length is 60 bytes */
2251 uint8_t saved_ip_header[60];
2252 memcpy(saved_ip_header, eth_payload_data, hlen);
2253
2254 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2255 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2256
2257 /* add 4 TCP pseudoheader fields */
2258 /* copy IP source and destination fields */
2259 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2260
2261 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2262 {
2263 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating TCP checksum for packet with %d bytes data\n", ip_data_len));
2264
2265 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2266 p_tcpip_hdr->zeros = 0;
2267 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2268 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2269
2270 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2271
2272 p_tcp_hdr->th_sum = 0;
2273
2274 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2275 DEBUG_PRINT(("RTL8139: +++ C+ mode TCP checksum %04x\n", tcp_checksum));
2276
2277 p_tcp_hdr->th_sum = tcp_checksum;
2278 }
2279 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2280 {
2281 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating UDP checksum for packet with %d bytes data\n", ip_data_len));
2282
2283 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2284 p_udpip_hdr->zeros = 0;
2285 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2286 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2287
2288 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2289
2290 p_udp_hdr->uh_sum = 0;
2291
2292 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2293 DEBUG_PRINT(("RTL8139: +++ C+ mode UDP checksum %04x\n", udp_checksum));
2294
2295 p_udp_hdr->uh_sum = udp_checksum;
2296 }
2297
2298 /* restore IP header */
2299 memcpy(eth_payload_data, saved_ip_header, hlen);
2300 }
2301 }
2302 }
2303
2304 /* update tally counter */
2305 ++s->tally_counters.TxOk;
2306
2307 DEBUG_PRINT(("RTL8139: +++ C+ mode transmitting %d bytes packet\n", saved_size));
2308
2309 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1);
2310
2311 /* restore card space if there was no recursion and reset offset */
2312 if (!s->cplus_txbuffer)
2313 {
2314 s->cplus_txbuffer = saved_buffer;
2315 s->cplus_txbuffer_len = saved_buffer_len;
2316 s->cplus_txbuffer_offset = 0;
2317 }
2318 else
2319 {
2320 free(saved_buffer);
2321 }
2322 }
2323 else
2324 {
2325 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission continue to next descriptor\n"));
2326 }
2327
2328 return 1;
2329 }
2330
2331 static void rtl8139_cplus_transmit(RTL8139State *s)
2332 {
2333 int txcount = 0;
2334
2335 while (rtl8139_cplus_transmit_one(s))
2336 {
2337 ++txcount;
2338 }
2339
2340 /* Mark transfer completed */
2341 if (!txcount)
2342 {
2343 DEBUG_PRINT(("RTL8139: C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2344 s->currCPlusTxDesc));
2345 }
2346 else
2347 {
2348 /* update interrupt status */
2349 s->IntrStatus |= TxOK;
2350 rtl8139_update_irq(s);
2351 }
2352 }
2353
2354 static void rtl8139_transmit(RTL8139State *s)
2355 {
2356 int descriptor = s->currTxDesc, txcount = 0;
2357
2358 /*while*/
2359 if (rtl8139_transmit_one(s, descriptor))
2360 {
2361 ++s->currTxDesc;
2362 s->currTxDesc %= 4;
2363 ++txcount;
2364 }
2365
2366 /* Mark transfer completed */
2367 if (!txcount)
2368 {
2369 DEBUG_PRINT(("RTL8139: transmitter queue stalled, current TxDesc = %d\n", s->currTxDesc));
2370 }
2371 }
2372
2373 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2374 {
2375
2376 int descriptor = txRegOffset/4;
2377
2378 /* handle C+ transmit mode register configuration */
2379
2380 if (s->cplus_enabled)
2381 {
2382 DEBUG_PRINT(("RTL8139C+ DTCCR write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2383
2384 /* handle Dump Tally Counters command */
2385 s->TxStatus[descriptor] = val;
2386
2387 if (descriptor == 0 && (val & 0x8))
2388 {
2389 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2390
2391 /* dump tally counters to specified memory location */
2392 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2393
2394 /* mark dump completed */
2395 s->TxStatus[0] &= ~0x8;
2396 }
2397
2398 return;
2399 }
2400
2401 DEBUG_PRINT(("RTL8139: TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2402
2403 /* mask only reserved bits */
2404 val &= ~0xff00c000; /* these bits are reset on write */
2405 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2406
2407 s->TxStatus[descriptor] = val;
2408
2409 /* attempt to start transmission */
2410 rtl8139_transmit(s);
2411 }
2412
2413 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2414 {
2415 uint32_t ret = s->TxStatus[txRegOffset/4];
2416
2417 DEBUG_PRINT(("RTL8139: TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret));
2418
2419 return ret;
2420 }
2421
2422 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2423 {
2424 uint16_t ret = 0;
2425
2426 /* Simulate TSAD, it is read only anyway */
2427
2428 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2429 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2430 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2431 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2432
2433 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2434 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2435 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2436 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2437
2438 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2439 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2440 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2441 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2442
2443 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2444 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2445 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2446 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2447
2448
2449 DEBUG_PRINT(("RTL8139: TSAD read val=0x%04x\n", ret));
2450
2451 return ret;
2452 }
2453
2454 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2455 {
2456 uint16_t ret = s->CSCR;
2457
2458 DEBUG_PRINT(("RTL8139: CSCR read val=0x%04x\n", ret));
2459
2460 return ret;
2461 }
2462
2463 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2464 {
2465 DEBUG_PRINT(("RTL8139: TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val));
2466
2467 s->TxAddr[txAddrOffset/4] = val;
2468 }
2469
2470 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2471 {
2472 uint32_t ret = s->TxAddr[txAddrOffset/4];
2473
2474 DEBUG_PRINT(("RTL8139: TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret));
2475
2476 return ret;
2477 }
2478
2479 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2480 {
2481 DEBUG_PRINT(("RTL8139: RxBufPtr write val=0x%04x\n", val));
2482
2483 /* this value is off by 16 */
2484 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2485
2486 DEBUG_PRINT((" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2487 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
2488 }
2489
2490 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2491 {
2492 /* this value is off by 16 */
2493 uint32_t ret = s->RxBufPtr - 0x10;
2494
2495 DEBUG_PRINT(("RTL8139: RxBufPtr read val=0x%04x\n", ret));
2496
2497 return ret;
2498 }
2499
2500 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2501 {
2502 /* this value is NOT off by 16 */
2503 uint32_t ret = s->RxBufAddr;
2504
2505 DEBUG_PRINT(("RTL8139: RxBufAddr read val=0x%04x\n", ret));
2506
2507 return ret;
2508 }
2509
2510 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2511 {
2512 DEBUG_PRINT(("RTL8139: RxBuf write val=0x%08x\n", val));
2513
2514 s->RxBuf = val;
2515
2516 /* may need to reset rxring here */
2517 }
2518
2519 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2520 {
2521 uint32_t ret = s->RxBuf;
2522
2523 DEBUG_PRINT(("RTL8139: RxBuf read val=0x%08x\n", ret));
2524
2525 return ret;
2526 }
2527
2528 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2529 {
2530 DEBUG_PRINT(("RTL8139: IntrMask write(w) val=0x%04x\n", val));
2531
2532 /* mask unwriteable bits */
2533 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2534
2535 s->IntrMask = val;
2536
2537 rtl8139_update_irq(s);
2538 }
2539
2540 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2541 {
2542 uint32_t ret = s->IntrMask;
2543
2544 DEBUG_PRINT(("RTL8139: IntrMask read(w) val=0x%04x\n", ret));
2545
2546 return ret;
2547 }
2548
2549 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2550 {
2551 DEBUG_PRINT(("RTL8139: IntrStatus write(w) val=0x%04x\n", val));
2552
2553 #if 0
2554
2555 /* writing to ISR has no effect */
2556
2557 return;
2558
2559 #else
2560 uint16_t newStatus = s->IntrStatus & ~val;
2561
2562 /* mask unwriteable bits */
2563 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2564
2565 /* writing 1 to interrupt status register bit clears it */
2566 s->IntrStatus = 0;
2567 rtl8139_update_irq(s);
2568
2569 s->IntrStatus = newStatus;
2570 rtl8139_update_irq(s);
2571 #endif
2572 }
2573
2574 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2575 {
2576 uint32_t ret = s->IntrStatus;
2577
2578 DEBUG_PRINT(("RTL8139: IntrStatus read(w) val=0x%04x\n", ret));
2579
2580 #if 0
2581
2582 /* reading ISR clears all interrupts */
2583 s->IntrStatus = 0;
2584
2585 rtl8139_update_irq(s);
2586
2587 #endif
2588
2589 return ret;
2590 }
2591
2592 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2593 {
2594 DEBUG_PRINT(("RTL8139: MultiIntr write(w) val=0x%04x\n", val));
2595
2596 /* mask unwriteable bits */
2597 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2598
2599 s->MultiIntr = val;
2600 }
2601
2602 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2603 {
2604 uint32_t ret = s->MultiIntr;
2605
2606 DEBUG_PRINT(("RTL8139: MultiIntr read(w) val=0x%04x\n", ret));
2607
2608 return ret;
2609 }
2610
2611 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2612 {
2613 RTL8139State *s = opaque;
2614
2615 addr &= 0xff;
2616
2617 switch (addr)
2618 {
2619 case MAC0 ... MAC0+5:
2620 s->phys[addr - MAC0] = val;
2621 break;
2622 case MAC0+6 ... MAC0+7:
2623 /* reserved */
2624 break;
2625 case MAR0 ... MAR0+7:
2626 s->mult[addr - MAR0] = val;
2627 break;
2628 case ChipCmd:
2629 rtl8139_ChipCmd_write(s, val);
2630 break;
2631 case Cfg9346:
2632 rtl8139_Cfg9346_write(s, val);
2633 break;
2634 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2635 rtl8139_TxConfig_writeb(s, val);
2636 break;
2637 case Config0:
2638 rtl8139_Config0_write(s, val);
2639 break;
2640 case Config1:
2641 rtl8139_Config1_write(s, val);
2642 break;
2643 case Config3:
2644 rtl8139_Config3_write(s, val);
2645 break;
2646 case Config4:
2647 rtl8139_Config4_write(s, val);
2648 break;
2649 case Config5:
2650 rtl8139_Config5_write(s, val);
2651 break;
2652 case MediaStatus:
2653 /* ignore */
2654 DEBUG_PRINT(("RTL8139: not implemented write(b) to MediaStatus val=0x%02x\n", val));
2655 break;
2656
2657 case HltClk:
2658 DEBUG_PRINT(("RTL8139: HltClk write val=0x%08x\n", val));
2659 if (val == 'R')
2660 {
2661 s->clock_enabled = 1;
2662 }
2663 else if (val == 'H')
2664 {
2665 s->clock_enabled = 0;
2666 }
2667 break;
2668
2669 case TxThresh:
2670 DEBUG_PRINT(("RTL8139C+ TxThresh write(b) val=0x%02x\n", val));
2671 s->TxThresh = val;
2672 break;
2673
2674 case TxPoll:
2675 DEBUG_PRINT(("RTL8139C+ TxPoll write(b) val=0x%02x\n", val));
2676 if (val & (1 << 7))
2677 {
2678 DEBUG_PRINT(("RTL8139C+ TxPoll high priority transmission (not implemented)\n"));
2679 //rtl8139_cplus_transmit(s);
2680 }
2681 if (val & (1 << 6))
2682 {
2683 DEBUG_PRINT(("RTL8139C+ TxPoll normal priority transmission\n"));
2684 rtl8139_cplus_transmit(s);
2685 }
2686
2687 break;
2688
2689 default:
2690 DEBUG_PRINT(("RTL8139: not implemented write(b) addr=0x%x val=0x%02x\n", addr, val));
2691 break;
2692 }
2693 }
2694
2695 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2696 {
2697 RTL8139State *s = opaque;
2698
2699 addr &= 0xfe;
2700
2701 switch (addr)
2702 {
2703 case IntrMask:
2704 rtl8139_IntrMask_write(s, val);
2705 break;
2706
2707 case IntrStatus:
2708 rtl8139_IntrStatus_write(s, val);
2709 break;
2710
2711 case MultiIntr:
2712 rtl8139_MultiIntr_write(s, val);
2713 break;
2714
2715 case RxBufPtr:
2716 rtl8139_RxBufPtr_write(s, val);
2717 break;
2718
2719 case BasicModeCtrl:
2720 rtl8139_BasicModeCtrl_write(s, val);
2721 break;
2722 case BasicModeStatus:
2723 rtl8139_BasicModeStatus_write(s, val);
2724 break;
2725 case NWayAdvert:
2726 DEBUG_PRINT(("RTL8139: NWayAdvert write(w) val=0x%04x\n", val));
2727 s->NWayAdvert = val;
2728 break;
2729 case NWayLPAR:
2730 DEBUG_PRINT(("RTL8139: forbidden NWayLPAR write(w) val=0x%04x\n", val));
2731 break;
2732 case NWayExpansion:
2733 DEBUG_PRINT(("RTL8139: NWayExpansion write(w) val=0x%04x\n", val));
2734 s->NWayExpansion = val;
2735 break;
2736
2737 case CpCmd:
2738 rtl8139_CpCmd_write(s, val);
2739 break;
2740
2741 case IntrMitigate:
2742 rtl8139_IntrMitigate_write(s, val);
2743 break;
2744
2745 default:
2746 DEBUG_PRINT(("RTL8139: ioport write(w) addr=0x%x val=0x%04x via write(b)\n", addr, val));
2747
2748 rtl8139_io_writeb(opaque, addr, val & 0xff);
2749 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2750 break;
2751 }
2752 }
2753
2754 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2755 {
2756 RTL8139State *s = opaque;
2757
2758 addr &= 0xfc;
2759
2760 switch (addr)
2761 {
2762 case RxMissed:
2763 DEBUG_PRINT(("RTL8139: RxMissed clearing on write\n"));
2764 s->RxMissed = 0;
2765 break;
2766
2767 case TxConfig:
2768 rtl8139_TxConfig_write(s, val);
2769 break;
2770
2771 case RxConfig:
2772 rtl8139_RxConfig_write(s, val);
2773 break;
2774
2775 case TxStatus0 ... TxStatus0+4*4-1:
2776 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2777 break;
2778
2779 case TxAddr0 ... TxAddr0+4*4-1:
2780 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2781 break;
2782
2783 case RxBuf:
2784 rtl8139_RxBuf_write(s, val);
2785 break;
2786
2787 case RxRingAddrLO:
2788 DEBUG_PRINT(("RTL8139: C+ RxRing low bits write val=0x%08x\n", val));
2789 s->RxRingAddrLO = val;
2790 break;
2791
2792 case RxRingAddrHI:
2793 DEBUG_PRINT(("RTL8139: C+ RxRing high bits write val=0x%08x\n", val));
2794 s->RxRingAddrHI = val;
2795 break;
2796
2797 case Timer:
2798 DEBUG_PRINT(("RTL8139: TCTR Timer reset on write\n"));
2799 s->TCTR = 0;
2800 s->TCTR_base = qemu_get_clock(vm_clock);
2801 break;
2802
2803 case FlashReg:
2804 DEBUG_PRINT(("RTL8139: FlashReg TimerInt write val=0x%08x\n", val));
2805 s->TimerInt = val;
2806 break;
2807
2808 default:
2809 DEBUG_PRINT(("RTL8139: ioport write(l) addr=0x%x val=0x%08x via write(b)\n", addr, val));
2810 rtl8139_io_writeb(opaque, addr, val & 0xff);
2811 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2812 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2813 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2814 break;
2815 }
2816 }
2817
2818 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2819 {
2820 RTL8139State *s = opaque;
2821 int ret;
2822
2823 addr &= 0xff;
2824
2825 switch (addr)
2826 {
2827 case MAC0 ... MAC0+5:
2828 ret = s->phys[addr - MAC0];
2829 break;
2830 case MAC0+6 ... MAC0+7:
2831 ret = 0;
2832 break;
2833 case MAR0 ... MAR0+7:
2834 ret = s->mult[addr - MAR0];
2835 break;
2836 case ChipCmd:
2837 ret = rtl8139_ChipCmd_read(s);
2838 break;
2839 case Cfg9346:
2840 ret = rtl8139_Cfg9346_read(s);
2841 break;
2842 case Config0:
2843 ret = rtl8139_Config0_read(s);
2844 break;
2845 case Config1:
2846 ret = rtl8139_Config1_read(s);
2847 break;
2848 case Config3:
2849 ret = rtl8139_Config3_read(s);
2850 break;
2851 case Config4:
2852 ret = rtl8139_Config4_read(s);
2853 break;
2854 case Config5:
2855 ret = rtl8139_Config5_read(s);
2856 break;
2857
2858 case MediaStatus:
2859 ret = 0xd0;
2860 DEBUG_PRINT(("RTL8139: MediaStatus read 0x%x\n", ret));
2861 break;
2862
2863 case HltClk:
2864 ret = s->clock_enabled;
2865 DEBUG_PRINT(("RTL8139: HltClk read 0x%x\n", ret));
2866 break;
2867
2868 case PCIRevisionID:
2869 ret = RTL8139_PCI_REVID;
2870 DEBUG_PRINT(("RTL8139: PCI Revision ID read 0x%x\n", ret));
2871 break;
2872
2873 case TxThresh:
2874 ret = s->TxThresh;
2875 DEBUG_PRINT(("RTL8139C+ TxThresh read(b) val=0x%02x\n", ret));
2876 break;
2877
2878 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
2879 ret = s->TxConfig >> 24;
2880 DEBUG_PRINT(("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret));
2881 break;
2882
2883 default:
2884 DEBUG_PRINT(("RTL8139: not implemented read(b) addr=0x%x\n", addr));
2885 ret = 0;
2886 break;
2887 }
2888
2889 return ret;
2890 }
2891
2892 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
2893 {
2894 RTL8139State *s = opaque;
2895 uint32_t ret;
2896
2897 addr &= 0xfe; /* mask lower bit */
2898
2899 switch (addr)
2900 {
2901 case IntrMask:
2902 ret = rtl8139_IntrMask_read(s);
2903 break;
2904
2905 case IntrStatus:
2906 ret = rtl8139_IntrStatus_read(s);
2907 break;
2908
2909 case MultiIntr:
2910 ret = rtl8139_MultiIntr_read(s);
2911 break;
2912
2913 case RxBufPtr:
2914 ret = rtl8139_RxBufPtr_read(s);
2915 break;
2916
2917 case RxBufAddr:
2918 ret = rtl8139_RxBufAddr_read(s);
2919 break;
2920
2921 case BasicModeCtrl:
2922 ret = rtl8139_BasicModeCtrl_read(s);
2923 break;
2924 case BasicModeStatus:
2925 ret = rtl8139_BasicModeStatus_read(s);
2926 break;
2927 case NWayAdvert:
2928 ret = s->NWayAdvert;
2929 DEBUG_PRINT(("RTL8139: NWayAdvert read(w) val=0x%04x\n", ret));
2930 break;
2931 case NWayLPAR:
2932 ret = s->NWayLPAR;
2933 DEBUG_PRINT(("RTL8139: NWayLPAR read(w) val=0x%04x\n", ret));
2934 break;
2935 case NWayExpansion:
2936 ret = s->NWayExpansion;
2937 DEBUG_PRINT(("RTL8139: NWayExpansion read(w) val=0x%04x\n", ret));
2938 break;
2939
2940 case CpCmd:
2941 ret = rtl8139_CpCmd_read(s);
2942 break;
2943
2944 case IntrMitigate:
2945 ret = rtl8139_IntrMitigate_read(s);
2946 break;
2947
2948 case TxSummary:
2949 ret = rtl8139_TSAD_read(s);
2950 break;
2951
2952 case CSCR:
2953 ret = rtl8139_CSCR_read(s);
2954 break;
2955
2956 default:
2957 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x via read(b)\n", addr));
2958
2959 ret = rtl8139_io_readb(opaque, addr);
2960 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
2961
2962 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x val=0x%04x\n", addr, ret));
2963 break;
2964 }
2965
2966 return ret;
2967 }
2968
2969 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
2970 {
2971 RTL8139State *s = opaque;
2972 uint32_t ret;
2973
2974 addr &= 0xfc; /* also mask low 2 bits */
2975
2976 switch (addr)
2977 {
2978 case RxMissed:
2979 ret = s->RxMissed;
2980
2981 DEBUG_PRINT(("RTL8139: RxMissed read val=0x%08x\n", ret));
2982 break;
2983
2984 case TxConfig:
2985 ret = rtl8139_TxConfig_read(s);
2986 break;
2987
2988 case RxConfig:
2989 ret = rtl8139_RxConfig_read(s);
2990 break;
2991
2992 case TxStatus0 ... TxStatus0+4*4-1:
2993 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
2994 break;
2995
2996 case TxAddr0 ... TxAddr0+4*4-1:
2997 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
2998 break;
2999
3000 case RxBuf:
3001 ret = rtl8139_RxBuf_read(s);
3002 break;
3003
3004 case RxRingAddrLO:
3005 ret = s->RxRingAddrLO;
3006 DEBUG_PRINT(("RTL8139: C+ RxRing low bits read val=0x%08x\n", ret));
3007 break;
3008
3009 case RxRingAddrHI:
3010 ret = s->RxRingAddrHI;
3011 DEBUG_PRINT(("RTL8139: C+ RxRing high bits read val=0x%08x\n", ret));
3012 break;
3013
3014 case Timer:
3015 ret = s->TCTR;
3016 DEBUG_PRINT(("RTL8139: TCTR Timer read val=0x%08x\n", ret));
3017 break;
3018
3019 case FlashReg:
3020 ret = s->TimerInt;
3021 DEBUG_PRINT(("RTL8139: FlashReg TimerInt read val=0x%08x\n", ret));
3022 break;
3023
3024 default:
3025 DEBUG_PRINT(("RTL8139: ioport read(l) addr=0x%x via read(b)\n", addr));
3026
3027 ret = rtl8139_io_readb(opaque, addr);
3028 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3029 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3030 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3031
3032 DEBUG_PRINT(("RTL8139: read(l) addr=0x%x val=%08x\n", addr, ret));
3033 break;
3034 }
3035
3036 return ret;
3037 }
3038
3039 /* */
3040
3041 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3042 {
3043 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3044 }
3045
3046 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3047 {
3048 rtl8139_io_writew(opaque, addr & 0xFF, val);
3049 }
3050
3051 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3052 {
3053 rtl8139_io_writel(opaque, addr & 0xFF, val);
3054 }
3055
3056 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3057 {
3058 return rtl8139_io_readb(opaque, addr & 0xFF);
3059 }
3060
3061 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3062 {
3063 return rtl8139_io_readw(opaque, addr & 0xFF);
3064 }
3065
3066 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3067 {
3068 return rtl8139_io_readl(opaque, addr & 0xFF);
3069 }
3070
3071 /* */
3072
3073 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3074 {
3075 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3076 }
3077
3078 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3079 {
3080 #ifdef TARGET_WORDS_BIGENDIAN
3081 val = bswap16(val);
3082 #endif
3083 rtl8139_io_writew(opaque, addr & 0xFF, val);
3084 }
3085
3086 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3087 {
3088 #ifdef TARGET_WORDS_BIGENDIAN
3089 val = bswap32(val);
3090 #endif
3091 rtl8139_io_writel(opaque, addr & 0xFF, val);
3092 }
3093
3094 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3095 {
3096 return rtl8139_io_readb(opaque, addr & 0xFF);
3097 }
3098
3099 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3100 {
3101 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3102 #ifdef TARGET_WORDS_BIGENDIAN
3103 val = bswap16(val);
3104 #endif
3105 return val;
3106 }
3107
3108 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3109 {
3110 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3111 #ifdef TARGET_WORDS_BIGENDIAN
3112 val = bswap32(val);
3113 #endif
3114 return val;
3115 }
3116
3117 /* */
3118
3119 static void rtl8139_save(QEMUFile* f,void* opaque)
3120 {
3121 RTL8139State* s = opaque;
3122 unsigned int i;
3123
3124 pci_device_save(&s->dev, f);
3125
3126 qemu_put_buffer(f, s->phys, 6);
3127 qemu_put_buffer(f, s->mult, 8);
3128
3129 for (i=0; i<4; ++i)
3130 {
3131 qemu_put_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3132 }
3133 for (i=0; i<4; ++i)
3134 {
3135 qemu_put_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3136 }
3137
3138 qemu_put_be32s(f, &s->RxBuf); /* Receive buffer */
3139 qemu_put_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3140 qemu_put_be32s(f, &s->RxBufPtr);
3141 qemu_put_be32s(f, &s->RxBufAddr);
3142
3143 qemu_put_be16s(f, &s->IntrStatus);
3144 qemu_put_be16s(f, &s->IntrMask);
3145
3146 qemu_put_be32s(f, &s->TxConfig);
3147 qemu_put_be32s(f, &s->RxConfig);
3148 qemu_put_be32s(f, &s->RxMissed);
3149 qemu_put_be16s(f, &s->CSCR);
3150
3151 qemu_put_8s(f, &s->Cfg9346);
3152 qemu_put_8s(f, &s->Config0);
3153 qemu_put_8s(f, &s->Config1);
3154 qemu_put_8s(f, &s->Config3);
3155 qemu_put_8s(f, &s->Config4);
3156 qemu_put_8s(f, &s->Config5);
3157
3158 qemu_put_8s(f, &s->clock_enabled);
3159 qemu_put_8s(f, &s->bChipCmdState);
3160
3161 qemu_put_be16s(f, &s->MultiIntr);
3162
3163 qemu_put_be16s(f, &s->BasicModeCtrl);
3164 qemu_put_be16s(f, &s->BasicModeStatus);
3165 qemu_put_be16s(f, &s->NWayAdvert);
3166 qemu_put_be16s(f, &s->NWayLPAR);
3167 qemu_put_be16s(f, &s->NWayExpansion);
3168
3169 qemu_put_be16s(f, &s->CpCmd);
3170 qemu_put_8s(f, &s->TxThresh);
3171
3172 i = 0;
3173 qemu_put_be32s(f, &i); /* unused. */
3174 qemu_put_buffer(f, s->macaddr, 6);
3175 qemu_put_be32(f, s->rtl8139_mmio_io_addr);
3176
3177 qemu_put_be32s(f, &s->currTxDesc);
3178 qemu_put_be32s(f, &s->currCPlusRxDesc);
3179 qemu_put_be32s(f, &s->currCPlusTxDesc);
3180 qemu_put_be32s(f, &s->RxRingAddrLO);
3181 qemu_put_be32s(f, &s->RxRingAddrHI);
3182
3183 for (i=0; i<EEPROM_9346_SIZE; ++i)
3184 {
3185 qemu_put_be16s(f, &s->eeprom.contents[i]);
3186 }
3187 qemu_put_be32(f, s->eeprom.mode);
3188 qemu_put_be32s(f, &s->eeprom.tick);
3189 qemu_put_8s(f, &s->eeprom.address);
3190 qemu_put_be16s(f, &s->eeprom.input);
3191 qemu_put_be16s(f, &s->eeprom.output);
3192
3193 qemu_put_8s(f, &s->eeprom.eecs);
3194 qemu_put_8s(f, &s->eeprom.eesk);
3195 qemu_put_8s(f, &s->eeprom.eedi);
3196 qemu_put_8s(f, &s->eeprom.eedo);
3197
3198 qemu_put_be32s(f, &s->TCTR);
3199 qemu_put_be32s(f, &s->TimerInt);
3200 qemu_put_be64(f, s->TCTR_base);
3201
3202 RTL8139TallyCounters_save(f, &s->tally_counters);
3203
3204 qemu_put_be32s(f, &s->cplus_enabled);
3205 }
3206
3207 static int rtl8139_load(QEMUFile* f,void* opaque,int version_id)
3208 {
3209 RTL8139State* s = opaque;
3210 unsigned int i;
3211 int ret;
3212
3213 /* just 2 versions for now */
3214 if (version_id > 4)
3215 return -EINVAL;
3216
3217 if (version_id >= 3) {
3218 ret = pci_device_load(&s->dev, f);
3219 if (ret < 0)
3220 return ret;
3221 }
3222
3223 /* saved since version 1 */
3224 qemu_get_buffer(f, s->phys, 6);
3225 qemu_get_buffer(f, s->mult, 8);
3226
3227 for (i=0; i<4; ++i)
3228 {
3229 qemu_get_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3230 }
3231 for (i=0; i<4; ++i)
3232 {
3233 qemu_get_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3234 }
3235
3236 qemu_get_be32s(f, &s->RxBuf); /* Receive buffer */
3237 qemu_get_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3238 qemu_get_be32s(f, &s->RxBufPtr);
3239 qemu_get_be32s(f, &s->RxBufAddr);
3240
3241 qemu_get_be16s(f, &s->IntrStatus);
3242 qemu_get_be16s(f, &s->IntrMask);
3243
3244 qemu_get_be32s(f, &s->TxConfig);
3245 qemu_get_be32s(f, &s->RxConfig);
3246 qemu_get_be32s(f, &s->RxMissed);
3247 qemu_get_be16s(f, &s->CSCR);
3248
3249 qemu_get_8s(f, &s->Cfg9346);
3250 qemu_get_8s(f, &s->Config0);
3251 qemu_get_8s(f, &s->Config1);
3252 qemu_get_8s(f, &s->Config3);
3253 qemu_get_8s(f, &s->Config4);
3254 qemu_get_8s(f, &s->Config5);
3255
3256 qemu_get_8s(f, &s->clock_enabled);
3257 qemu_get_8s(f, &s->bChipCmdState);
3258
3259 qemu_get_be16s(f, &s->MultiIntr);
3260
3261 qemu_get_be16s(f, &s->BasicModeCtrl);
3262 qemu_get_be16s(f, &s->BasicModeStatus);
3263 qemu_get_be16s(f, &s->NWayAdvert);
3264 qemu_get_be16s(f, &s->NWayLPAR);
3265 qemu_get_be16s(f, &s->NWayExpansion);
3266
3267 qemu_get_be16s(f, &s->CpCmd);
3268 qemu_get_8s(f, &s->TxThresh);
3269
3270 qemu_get_be32s(f, &i); /* unused. */
3271 qemu_get_buffer(f, s->macaddr, 6);
3272 s->rtl8139_mmio_io_addr=qemu_get_be32(f);
3273
3274 qemu_get_be32s(f, &s->currTxDesc);
3275 qemu_get_be32s(f, &s->currCPlusRxDesc);
3276 qemu_get_be32s(f, &s->currCPlusTxDesc);
3277 qemu_get_be32s(f, &s->RxRingAddrLO);
3278 qemu_get_be32s(f, &s->RxRingAddrHI);
3279
3280 for (i=0; i<EEPROM_9346_SIZE; ++i)
3281 {
3282 qemu_get_be16s(f, &s->eeprom.contents[i]);
3283 }
3284 s->eeprom.mode=qemu_get_be32(f);
3285 qemu_get_be32s(f, &s->eeprom.tick);
3286 qemu_get_8s(f, &s->eeprom.address);
3287 qemu_get_be16s(f, &s->eeprom.input);
3288 qemu_get_be16s(f, &s->eeprom.output);
3289
3290 qemu_get_8s(f, &s->eeprom.eecs);
3291 qemu_get_8s(f, &s->eeprom.eesk);
3292 qemu_get_8s(f, &s->eeprom.eedi);
3293 qemu_get_8s(f, &s->eeprom.eedo);
3294
3295 /* saved since version 2 */
3296 if (version_id >= 2)
3297 {
3298 qemu_get_be32s(f, &s->TCTR);
3299 qemu_get_be32s(f, &s->TimerInt);
3300 s->TCTR_base=qemu_get_be64(f);
3301
3302 RTL8139TallyCounters_load(f, &s->tally_counters);
3303 }
3304 else
3305 {
3306 /* not saved, use default */
3307 s->TCTR = 0;
3308 s->TimerInt = 0;
3309 s->TCTR_base = 0;
3310
3311 RTL8139TallyCounters_clear(&s->tally_counters);
3312 }
3313
3314 if (version_id >= 4) {
3315 qemu_get_be32s(f, &s->cplus_enabled);
3316 } else {
3317 s->cplus_enabled = s->CpCmd != 0;
3318 }
3319
3320 return 0;
3321 }
3322
3323 /***********************************************************/
3324 /* PCI RTL8139 definitions */
3325
3326 static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num,
3327 uint32_t addr, uint32_t size, int type)
3328 {
3329 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3330
3331 cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr);
3332 }
3333
3334 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3335 uint32_t addr, uint32_t size, int type)
3336 {
3337 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3338
3339 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3340 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3341
3342 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3343 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3344
3345 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3346 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3347 }
3348
3349 static CPUReadMemoryFunc * const rtl8139_mmio_read[3] = {
3350 rtl8139_mmio_readb,
3351 rtl8139_mmio_readw,
3352 rtl8139_mmio_readl,
3353 };
3354
3355 static CPUWriteMemoryFunc * const rtl8139_mmio_write[3] = {
3356 rtl8139_mmio_writeb,
3357 rtl8139_mmio_writew,
3358 rtl8139_mmio_writel,
3359 };
3360
3361 static inline int64_t rtl8139_get_next_tctr_time(RTL8139State *s, int64_t current_time)
3362 {
3363 int64_t next_time = current_time +
3364 muldiv64(1, get_ticks_per_sec(), PCI_FREQUENCY);
3365 if (next_time <= current_time)
3366 next_time = current_time + 1;
3367 return next_time;
3368 }
3369
3370 #ifdef RTL8139_ONBOARD_TIMER
3371 static void rtl8139_timer(void *opaque)
3372 {
3373 RTL8139State *s = opaque;
3374
3375 int is_timeout = 0;
3376
3377 int64_t curr_time;
3378 uint32_t curr_tick;
3379
3380 if (!s->clock_enabled)
3381 {
3382 DEBUG_PRINT(("RTL8139: >>> timer: clock is not running\n"));
3383 return;
3384 }
3385
3386 curr_time = qemu_get_clock(vm_clock);
3387
3388 curr_tick = muldiv64(curr_time - s->TCTR_base, PCI_FREQUENCY,
3389 get_ticks_per_sec());
3390
3391 if (s->TimerInt && curr_tick >= s->TimerInt)
3392 {
3393 if (s->TCTR < s->TimerInt || curr_tick < s->TCTR)
3394 {
3395 is_timeout = 1;
3396 }
3397 }
3398
3399 s->TCTR = curr_tick;
3400
3401 // DEBUG_PRINT(("RTL8139: >>> timer: tick=%08u\n", s->TCTR));
3402
3403 if (is_timeout)
3404 {
3405 DEBUG_PRINT(("RTL8139: >>> timer: timeout tick=%08u\n", s->TCTR));
3406 s->IntrStatus |= PCSTimeout;
3407 rtl8139_update_irq(s);
3408 }
3409
3410 qemu_mod_timer(s->timer,
3411 rtl8139_get_next_tctr_time(s,curr_time));
3412 }
3413 #endif /* RTL8139_ONBOARD_TIMER */
3414
3415 static void rtl8139_cleanup(VLANClientState *vc)
3416 {
3417 RTL8139State *s = vc->opaque;
3418
3419 if (s->cplus_txbuffer) {
3420 qemu_free(s->cplus_txbuffer);
3421 s->cplus_txbuffer = NULL;
3422 }
3423
3424 #ifdef RTL8139_ONBOARD_TIMER
3425 qemu_del_timer(s->timer);
3426 qemu_free_timer(s->timer);
3427 #endif
3428
3429 unregister_savevm("rtl8139", s);
3430 }
3431
3432 static int pci_rtl8139_uninit(PCIDevice *dev)
3433 {
3434 RTL8139State *s = DO_UPCAST(RTL8139State, dev, dev);
3435
3436 cpu_unregister_io_memory(s->rtl8139_mmio_io_addr);
3437
3438 return 0;
3439 }
3440
3441 static int pci_rtl8139_init(PCIDevice *dev)
3442 {
3443 RTL8139State * s = DO_UPCAST(RTL8139State, dev, dev);
3444 uint8_t *pci_conf;
3445
3446 s->dev.unregister = pci_rtl8139_uninit;
3447
3448 pci_conf = s->dev.config;
3449 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK);
3450 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8139);
3451 pci_conf[0x04] = 0x05; /* command = I/O space, Bus Master */
3452 pci_conf[0x08] = RTL8139_PCI_REVID; /* PCI revision ID; >=0x20 is for 8139C+ */
3453 pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET);
3454 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; /* header_type */
3455 pci_conf[0x3d] = 1; /* interrupt pin 0 */
3456 pci_conf[0x34] = 0xdc;
3457
3458 /* I/O handler for memory-mapped I/O */
3459 s->rtl8139_mmio_io_addr =
3460 cpu_register_io_memory(rtl8139_mmio_read, rtl8139_mmio_write, s);
3461
3462 pci_register_bar(&s->dev, 0, 0x100,
3463 PCI_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3464
3465 pci_register_bar(&s->dev, 1, 0x100,
3466 PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map);
3467
3468 qdev_get_macaddr(&dev->qdev, s->macaddr);
3469 rtl8139_reset(s);
3470 s->vc = qdev_get_vlan_client(&dev->qdev,
3471 rtl8139_can_receive, rtl8139_receive, NULL,
3472 rtl8139_cleanup, s);
3473
3474 qemu_format_nic_info_str(s->vc, s->macaddr);
3475
3476 s->cplus_txbuffer = NULL;
3477 s->cplus_txbuffer_len = 0;
3478 s->cplus_txbuffer_offset = 0;
3479
3480 register_savevm("rtl8139", -1, 4, rtl8139_save, rtl8139_load, s);
3481
3482 #ifdef RTL8139_ONBOARD_TIMER
3483 s->timer = qemu_new_timer(vm_clock, rtl8139_timer, s);
3484
3485 qemu_mod_timer(s->timer,
3486 rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock)));
3487 #endif /* RTL8139_ONBOARD_TIMER */
3488 return 0;
3489 }
3490
3491 static PCIDeviceInfo rtl8139_info = {
3492 .qdev.name = "rtl8139",
3493 .qdev.size = sizeof(RTL8139State),
3494 .qdev.reset = rtl8139_reset,
3495 .init = pci_rtl8139_init,
3496 };
3497
3498 static void rtl8139_register_devices(void)
3499 {
3500 pci_qdev_register(&rtl8139_info);
3501 }
3502
3503 device_init(rtl8139_register_devices)
QEmu