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Nicer debug output
[qemu/mini2440.git] / hw / rtl8139.c
bloba7ab7047af44cf9787e54a5cb53fe2bff5b76bf1
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 uint8_t phys[8]; /* mac address */
427 uint8_t mult[8]; /* multicast mask array */
428
429 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
430 uint32_t TxAddr[4]; /* TxAddr0 */
431 uint32_t RxBuf; /* Receive buffer */
432 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
433 uint32_t RxBufPtr;
434 uint32_t RxBufAddr;
435
436 uint16_t IntrStatus;
437 uint16_t IntrMask;
438
439 uint32_t TxConfig;
440 uint32_t RxConfig;
441 uint32_t RxMissed;
442
443 uint16_t CSCR;
444
445 uint8_t Cfg9346;
446 uint8_t Config0;
447 uint8_t Config1;
448 uint8_t Config3;
449 uint8_t Config4;
450 uint8_t Config5;
451
452 uint8_t clock_enabled;
453 uint8_t bChipCmdState;
454
455 uint16_t MultiIntr;
456
457 uint16_t BasicModeCtrl;
458 uint16_t BasicModeStatus;
459 uint16_t NWayAdvert;
460 uint16_t NWayLPAR;
461 uint16_t NWayExpansion;
462
463 uint16_t CpCmd;
464 uint8_t TxThresh;
465
466 PCIDevice *pci_dev;
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 currCPlusRxDesc;
476 uint32_t currCPlusTxDesc;
477
478 uint32_t RxRingAddrLO;
479 uint32_t RxRingAddrHI;
480
481 EEprom9346 eeprom;
482
483 uint32_t TCTR;
484 uint32_t TimerInt;
485 int64_t TCTR_base;
486
487 /* Tally counters */
488 RTL8139TallyCounters tally_counters;
489
490 /* Non-persistent data */
491 uint8_t *cplus_txbuffer;
492 int cplus_txbuffer_len;
493 int cplus_txbuffer_offset;
494
495 /* PCI interrupt timer */
496 QEMUTimer *timer;
497
498 } RTL8139State;
499
500 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
501 {
502 DEBUG_PRINT(("RTL8139: eeprom command 0x%02x\n", command));
503
504 switch (command & Chip9346_op_mask)
505 {
506 case Chip9346_op_read:
507 {
508 eeprom->address = command & EEPROM_9346_ADDR_MASK;
509 eeprom->output = eeprom->contents[eeprom->address];
510 eeprom->eedo = 0;
511 eeprom->tick = 0;
512 eeprom->mode = Chip9346_data_read;
513 DEBUG_PRINT(("RTL8139: eeprom read from address 0x%02x data=0x%04x\n",
514 eeprom->address, eeprom->output));
515 }
516 break;
517
518 case Chip9346_op_write:
519 {
520 eeprom->address = command & EEPROM_9346_ADDR_MASK;
521 eeprom->input = 0;
522 eeprom->tick = 0;
523 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
524 DEBUG_PRINT(("RTL8139: eeprom begin write to address 0x%02x\n",
525 eeprom->address));
526 }
527 break;
528 default:
529 eeprom->mode = Chip9346_none;
530 switch (command & Chip9346_op_ext_mask)
531 {
532 case Chip9346_op_write_enable:
533 DEBUG_PRINT(("RTL8139: eeprom write enabled\n"));
534 break;
535 case Chip9346_op_write_all:
536 DEBUG_PRINT(("RTL8139: eeprom begin write all\n"));
537 break;
538 case Chip9346_op_write_disable:
539 DEBUG_PRINT(("RTL8139: eeprom write disabled\n"));
540 break;
541 }
542 break;
543 }
544 }
545
546 static void prom9346_shift_clock(EEprom9346 *eeprom)
547 {
548 int bit = eeprom->eedi?1:0;
549
550 ++ eeprom->tick;
551
552 DEBUG_PRINT(("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, eeprom->eedo));
553
554 switch (eeprom->mode)
555 {
556 case Chip9346_enter_command_mode:
557 if (bit)
558 {
559 eeprom->mode = Chip9346_read_command;
560 eeprom->tick = 0;
561 eeprom->input = 0;
562 DEBUG_PRINT(("eeprom: +++ synchronized, begin command read\n"));
563 }
564 break;
565
566 case Chip9346_read_command:
567 eeprom->input = (eeprom->input << 1) | (bit & 1);
568 if (eeprom->tick == 8)
569 {
570 prom9346_decode_command(eeprom, eeprom->input & 0xff);
571 }
572 break;
573
574 case Chip9346_data_read:
575 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
576 eeprom->output <<= 1;
577 if (eeprom->tick == 16)
578 {
579 #if 1
580 // the FreeBSD drivers (rl and re) don't explicitly toggle
581 // CS between reads (or does setting Cfg9346 to 0 count too?),
582 // so we need to enter wait-for-command state here
583 eeprom->mode = Chip9346_enter_command_mode;
584 eeprom->input = 0;
585 eeprom->tick = 0;
586
587 DEBUG_PRINT(("eeprom: +++ end of read, awaiting next command\n"));
588 #else
589 // original behaviour
590 ++eeprom->address;
591 eeprom->address &= EEPROM_9346_ADDR_MASK;
592 eeprom->output = eeprom->contents[eeprom->address];
593 eeprom->tick = 0;
594
595 DEBUG_PRINT(("eeprom: +++ read next address 0x%02x data=0x%04x\n",
596 eeprom->address, eeprom->output));
597 #endif
598 }
599 break;
600
601 case Chip9346_data_write:
602 eeprom->input = (eeprom->input << 1) | (bit & 1);
603 if (eeprom->tick == 16)
604 {
605 DEBUG_PRINT(("RTL8139: eeprom write to address 0x%02x data=0x%04x\n",
606 eeprom->address, eeprom->input));
607
608 eeprom->contents[eeprom->address] = eeprom->input;
609 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
610 eeprom->tick = 0;
611 eeprom->input = 0;
612 }
613 break;
614
615 case Chip9346_data_write_all:
616 eeprom->input = (eeprom->input << 1) | (bit & 1);
617 if (eeprom->tick == 16)
618 {
619 int i;
620 for (i = 0; i < EEPROM_9346_SIZE; i++)
621 {
622 eeprom->contents[i] = eeprom->input;
623 }
624 DEBUG_PRINT(("RTL8139: eeprom filled with data=0x%04x\n",
625 eeprom->input));
626
627 eeprom->mode = Chip9346_enter_command_mode;
628 eeprom->tick = 0;
629 eeprom->input = 0;
630 }
631 break;
632
633 default:
634 break;
635 }
636 }
637
638 static int prom9346_get_wire(RTL8139State *s)
639 {
640 EEprom9346 *eeprom = &s->eeprom;
641 if (!eeprom->eecs)
642 return 0;
643
644 return eeprom->eedo;
645 }
646
647 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
648 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
649 {
650 EEprom9346 *eeprom = &s->eeprom;
651 uint8_t old_eecs = eeprom->eecs;
652 uint8_t old_eesk = eeprom->eesk;
653
654 eeprom->eecs = eecs;
655 eeprom->eesk = eesk;
656 eeprom->eedi = eedi;
657
658 DEBUG_PRINT(("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n",
659 eeprom->eecs, eeprom->eesk, eeprom->eedi, eeprom->eedo));
660
661 if (!old_eecs && eecs)
662 {
663 /* Synchronize start */
664 eeprom->tick = 0;
665 eeprom->input = 0;
666 eeprom->output = 0;
667 eeprom->mode = Chip9346_enter_command_mode;
668
669 DEBUG_PRINT(("=== eeprom: begin access, enter command mode\n"));
670 }
671
672 if (!eecs)
673 {
674 DEBUG_PRINT(("=== eeprom: end access\n"));
675 return;
676 }
677
678 if (!old_eesk && eesk)
679 {
680 /* SK front rules */
681 prom9346_shift_clock(eeprom);
682 }
683 }
684
685 static void rtl8139_update_irq(RTL8139State *s)
686 {
687 int isr;
688 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
689
690 DEBUG_PRINT(("RTL8139: Set IRQ to %d (%04x %04x)\n",
691 isr ? 1 : 0, s->IntrStatus, s->IntrMask));
692
693 qemu_set_irq(s->pci_dev->irq[0], (isr != 0));
694 }
695
696 #define POLYNOMIAL 0x04c11db6
697
698 /* From FreeBSD */
699 /* XXX: optimize */
700 static int compute_mcast_idx(const uint8_t *ep)
701 {
702 uint32_t crc;
703 int carry, i, j;
704 uint8_t b;
705
706 crc = 0xffffffff;
707 for (i = 0; i < 6; i++) {
708 b = *ep++;
709 for (j = 0; j < 8; j++) {
710 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
711 crc <<= 1;
712 b >>= 1;
713 if (carry)
714 crc = ((crc ^ POLYNOMIAL) | carry);
715 }
716 }
717 return (crc >> 26);
718 }
719
720 static int rtl8139_RxWrap(RTL8139State *s)
721 {
722 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
723 return (s->RxConfig & (1 << 7));
724 }
725
726 static int rtl8139_receiver_enabled(RTL8139State *s)
727 {
728 return s->bChipCmdState & CmdRxEnb;
729 }
730
731 static int rtl8139_transmitter_enabled(RTL8139State *s)
732 {
733 return s->bChipCmdState & CmdTxEnb;
734 }
735
736 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
737 {
738 return s->CpCmd & CPlusRxEnb;
739 }
740
741 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
742 {
743 return s->CpCmd & CPlusTxEnb;
744 }
745
746 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
747 {
748 if (s->RxBufAddr + size > s->RxBufferSize)
749 {
750 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
751
752 /* write packet data */
753 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
754 {
755 DEBUG_PRINT((">>> RTL8139: rx packet wrapped in buffer at %d\n", size-wrapped));
756
757 if (size > wrapped)
758 {
759 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
760 buf, size-wrapped );
761 }
762
763 /* reset buffer pointer */
764 s->RxBufAddr = 0;
765
766 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
767 buf + (size-wrapped), wrapped );
768
769 s->RxBufAddr = wrapped;
770
771 return;
772 }
773 }
774
775 /* non-wrapping path or overwrapping enabled */
776 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
777
778 s->RxBufAddr += size;
779 }
780
781 #define MIN_BUF_SIZE 60
782 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
783 {
784 #if TARGET_PHYS_ADDR_BITS > 32
785 return low | ((target_phys_addr_t)high << 32);
786 #else
787 return low;
788 #endif
789 }
790
791 static int rtl8139_can_receive(void *opaque)
792 {
793 RTL8139State *s = opaque;
794 int avail;
795
796 /* Receive (drop) packets if card is disabled. */
797 if (!s->clock_enabled)
798 return 1;
799 if (!rtl8139_receiver_enabled(s))
800 return 1;
801
802 if (rtl8139_cp_receiver_enabled(s)) {
803 /* ??? Flow control not implemented in c+ mode.
804 This is a hack to work around slirp deficiencies anyway. */
805 return 1;
806 } else {
807 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
808 s->RxBufferSize);
809 return (avail == 0 || avail >= 1514);
810 }
811 }
812
813 static void rtl8139_do_receive(void *opaque, const uint8_t *buf, int size, int do_interrupt)
814 {
815 RTL8139State *s = opaque;
816
817 uint32_t packet_header = 0;
818
819 uint8_t buf1[60];
820 static const uint8_t broadcast_macaddr[6] =
821 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
822
823 DEBUG_PRINT((">>> RTL8139: received len=%d\n", size));
824
825 /* test if board clock is stopped */
826 if (!s->clock_enabled)
827 {
828 DEBUG_PRINT(("RTL8139: stopped ==========================\n"));
829 return;
830 }
831
832 /* first check if receiver is enabled */
833
834 if (!rtl8139_receiver_enabled(s))
835 {
836 DEBUG_PRINT(("RTL8139: receiver disabled ================\n"));
837 return;
838 }
839
840 /* XXX: check this */
841 if (s->RxConfig & AcceptAllPhys) {
842 /* promiscuous: receive all */
843 DEBUG_PRINT((">>> RTL8139: packet received in promiscuous mode\n"));
844
845 } else {
846 if (!memcmp(buf, broadcast_macaddr, 6)) {
847 /* broadcast address */
848 if (!(s->RxConfig & AcceptBroadcast))
849 {
850 DEBUG_PRINT((">>> RTL8139: broadcast packet rejected\n"));
851
852 /* update tally counter */
853 ++s->tally_counters.RxERR;
854
855 return;
856 }
857
858 packet_header |= RxBroadcast;
859
860 DEBUG_PRINT((">>> RTL8139: broadcast packet received\n"));
861
862 /* update tally counter */
863 ++s->tally_counters.RxOkBrd;
864
865 } else if (buf[0] & 0x01) {
866 /* multicast */
867 if (!(s->RxConfig & AcceptMulticast))
868 {
869 DEBUG_PRINT((">>> RTL8139: multicast packet rejected\n"));
870
871 /* update tally counter */
872 ++s->tally_counters.RxERR;
873
874 return;
875 }
876
877 int mcast_idx = compute_mcast_idx(buf);
878
879 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
880 {
881 DEBUG_PRINT((">>> RTL8139: multicast address mismatch\n"));
882
883 /* update tally counter */
884 ++s->tally_counters.RxERR;
885
886 return;
887 }
888
889 packet_header |= RxMulticast;
890
891 DEBUG_PRINT((">>> RTL8139: multicast packet received\n"));
892
893 /* update tally counter */
894 ++s->tally_counters.RxOkMul;
895
896 } else if (s->phys[0] == buf[0] &&
897 s->phys[1] == buf[1] &&
898 s->phys[2] == buf[2] &&
899 s->phys[3] == buf[3] &&
900 s->phys[4] == buf[4] &&
901 s->phys[5] == buf[5]) {
902 /* match */
903 if (!(s->RxConfig & AcceptMyPhys))
904 {
905 DEBUG_PRINT((">>> RTL8139: rejecting physical address matching packet\n"));
906
907 /* update tally counter */
908 ++s->tally_counters.RxERR;
909
910 return;
911 }
912
913 packet_header |= RxPhysical;
914
915 DEBUG_PRINT((">>> RTL8139: physical address matching packet received\n"));
916
917 /* update tally counter */
918 ++s->tally_counters.RxOkPhy;
919
920 } else {
921
922 DEBUG_PRINT((">>> RTL8139: unknown packet\n"));
923
924 /* update tally counter */
925 ++s->tally_counters.RxERR;
926
927 return;
928 }
929 }
930
931 /* if too small buffer, then expand it */
932 if (size < MIN_BUF_SIZE) {
933 memcpy(buf1, buf, size);
934 memset(buf1 + size, 0, MIN_BUF_SIZE - size);
935 buf = buf1;
936 size = MIN_BUF_SIZE;
937 }
938
939 if (rtl8139_cp_receiver_enabled(s))
940 {
941 DEBUG_PRINT(("RTL8139: in C+ Rx mode ================\n"));
942
943 /* begin C+ receiver mode */
944
945 /* w0 ownership flag */
946 #define CP_RX_OWN (1<<31)
947 /* w0 end of ring flag */
948 #define CP_RX_EOR (1<<30)
949 /* w0 bits 0...12 : buffer size */
950 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
951 /* w1 tag available flag */
952 #define CP_RX_TAVA (1<<16)
953 /* w1 bits 0...15 : VLAN tag */
954 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
955 /* w2 low 32bit of Rx buffer ptr */
956 /* w3 high 32bit of Rx buffer ptr */
957
958 int descriptor = s->currCPlusRxDesc;
959 target_phys_addr_t cplus_rx_ring_desc;
960
961 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
962 cplus_rx_ring_desc += 16 * descriptor;
963
964 DEBUG_PRINT(("RTL8139: +++ C+ mode reading RX descriptor %d from host memory at %08x %08x = %016" PRIx64 "\n",
965 descriptor, s->RxRingAddrHI, s->RxRingAddrLO, (uint64_t)cplus_rx_ring_desc));
966
967 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
968
969 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
970 rxdw0 = le32_to_cpu(val);
971 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
972 rxdw1 = le32_to_cpu(val);
973 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
974 rxbufLO = le32_to_cpu(val);
975 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
976 rxbufHI = le32_to_cpu(val);
977
978 DEBUG_PRINT(("RTL8139: +++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
979 descriptor,
980 rxdw0, rxdw1, rxbufLO, rxbufHI));
981
982 if (!(rxdw0 & CP_RX_OWN))
983 {
984 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d is owned by host\n", descriptor));
985
986 s->IntrStatus |= RxOverflow;
987 ++s->RxMissed;
988
989 /* update tally counter */
990 ++s->tally_counters.RxERR;
991 ++s->tally_counters.MissPkt;
992
993 rtl8139_update_irq(s);
994 return;
995 }
996
997 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
998
999 /* TODO: scatter the packet over available receive ring descriptors space */
1000
1001 if (size+4 > rx_space)
1002 {
1003 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d size %d received %d + 4\n",
1004 descriptor, rx_space, size));
1005
1006 s->IntrStatus |= RxOverflow;
1007 ++s->RxMissed;
1008
1009 /* update tally counter */
1010 ++s->tally_counters.RxERR;
1011 ++s->tally_counters.MissPkt;
1012
1013 rtl8139_update_irq(s);
1014 return;
1015 }
1016
1017 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1018
1019 /* receive/copy to target memory */
1020 cpu_physical_memory_write( rx_addr, buf, size );
1021
1022 if (s->CpCmd & CPlusRxChkSum)
1023 {
1024 /* do some packet checksumming */
1025 }
1026
1027 /* write checksum */
1028 #if defined (RTL8139_CALCULATE_RXCRC)
1029 val = cpu_to_le32(crc32(0, buf, size));
1030 #else
1031 val = 0;
1032 #endif
1033 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1034
1035 /* first segment of received packet flag */
1036 #define CP_RX_STATUS_FS (1<<29)
1037 /* last segment of received packet flag */
1038 #define CP_RX_STATUS_LS (1<<28)
1039 /* multicast packet flag */
1040 #define CP_RX_STATUS_MAR (1<<26)
1041 /* physical-matching packet flag */
1042 #define CP_RX_STATUS_PAM (1<<25)
1043 /* broadcast packet flag */
1044 #define CP_RX_STATUS_BAR (1<<24)
1045 /* runt packet flag */
1046 #define CP_RX_STATUS_RUNT (1<<19)
1047 /* crc error flag */
1048 #define CP_RX_STATUS_CRC (1<<18)
1049 /* IP checksum error flag */
1050 #define CP_RX_STATUS_IPF (1<<15)
1051 /* UDP checksum error flag */
1052 #define CP_RX_STATUS_UDPF (1<<14)
1053 /* TCP checksum error flag */
1054 #define CP_RX_STATUS_TCPF (1<<13)
1055
1056 /* transfer ownership to target */
1057 rxdw0 &= ~CP_RX_OWN;
1058
1059 /* set first segment bit */
1060 rxdw0 |= CP_RX_STATUS_FS;
1061
1062 /* set last segment bit */
1063 rxdw0 |= CP_RX_STATUS_LS;
1064
1065 /* set received packet type flags */
1066 if (packet_header & RxBroadcast)
1067 rxdw0 |= CP_RX_STATUS_BAR;
1068 if (packet_header & RxMulticast)
1069 rxdw0 |= CP_RX_STATUS_MAR;
1070 if (packet_header & RxPhysical)
1071 rxdw0 |= CP_RX_STATUS_PAM;
1072
1073 /* set received size */
1074 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1075 rxdw0 |= (size+4);
1076
1077 /* reset VLAN tag flag */
1078 rxdw1 &= ~CP_RX_TAVA;
1079
1080 /* update ring data */
1081 val = cpu_to_le32(rxdw0);
1082 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1083 val = cpu_to_le32(rxdw1);
1084 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1085
1086 /* update tally counter */
1087 ++s->tally_counters.RxOk;
1088
1089 /* seek to next Rx descriptor */
1090 if (rxdw0 & CP_RX_EOR)
1091 {
1092 s->currCPlusRxDesc = 0;
1093 }
1094 else
1095 {
1096 ++s->currCPlusRxDesc;
1097 }
1098
1099 DEBUG_PRINT(("RTL8139: done C+ Rx mode ----------------\n"));
1100
1101 }
1102 else
1103 {
1104 DEBUG_PRINT(("RTL8139: in ring Rx mode ================\n"));
1105
1106 /* begin ring receiver mode */
1107 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1108
1109 /* if receiver buffer is empty then avail == 0 */
1110
1111 if (avail != 0 && size + 8 >= avail)
1112 {
1113 DEBUG_PRINT(("rx overflow: rx buffer length %d head 0x%04x read 0x%04x === available 0x%04x need 0x%04x\n",
1114 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8));
1115
1116 s->IntrStatus |= RxOverflow;
1117 ++s->RxMissed;
1118 rtl8139_update_irq(s);
1119 return;
1120 }
1121
1122 packet_header |= RxStatusOK;
1123
1124 packet_header |= (((size+4) << 16) & 0xffff0000);
1125
1126 /* write header */
1127 uint32_t val = cpu_to_le32(packet_header);
1128
1129 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1130
1131 rtl8139_write_buffer(s, buf, size);
1132
1133 /* write checksum */
1134 #if defined (RTL8139_CALCULATE_RXCRC)
1135 val = cpu_to_le32(crc32(0, buf, size));
1136 #else
1137 val = 0;
1138 #endif
1139
1140 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1141
1142 /* correct buffer write pointer */
1143 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1144
1145 /* now we can signal we have received something */
1146
1147 DEBUG_PRINT((" received: rx buffer length %d head 0x%04x read 0x%04x\n",
1148 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
1149 }
1150
1151 s->IntrStatus |= RxOK;
1152
1153 if (do_interrupt)
1154 {
1155 rtl8139_update_irq(s);
1156 }
1157 }
1158
1159 static void rtl8139_receive(void *opaque, const uint8_t *buf, int size)
1160 {
1161 rtl8139_do_receive(opaque, buf, size, 1);
1162 }
1163
1164 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1165 {
1166 s->RxBufferSize = bufferSize;
1167 s->RxBufPtr = 0;
1168 s->RxBufAddr = 0;
1169 }
1170
1171 static void rtl8139_reset(RTL8139State *s)
1172 {
1173 int i;
1174
1175 /* restore MAC address */
1176 memcpy(s->phys, s->macaddr, 6);
1177
1178 /* reset interrupt mask */
1179 s->IntrStatus = 0;
1180 s->IntrMask = 0;
1181
1182 rtl8139_update_irq(s);
1183
1184 /* prepare eeprom */
1185 s->eeprom.contents[0] = 0x8129;
1186 #if 1
1187 // PCI vendor and device ID should be mirrored here
1188 s->eeprom.contents[1] = 0x10ec;
1189 s->eeprom.contents[2] = 0x8139;
1190 #endif
1191
1192 s->eeprom.contents[7] = s->macaddr[0] | s->macaddr[1] << 8;
1193 s->eeprom.contents[8] = s->macaddr[2] | s->macaddr[3] << 8;
1194 s->eeprom.contents[9] = s->macaddr[4] | s->macaddr[5] << 8;
1195
1196 /* mark all status registers as owned by host */
1197 for (i = 0; i < 4; ++i)
1198 {
1199 s->TxStatus[i] = TxHostOwns;
1200 }
1201
1202 s->currTxDesc = 0;
1203 s->currCPlusRxDesc = 0;
1204 s->currCPlusTxDesc = 0;
1205
1206 s->RxRingAddrLO = 0;
1207 s->RxRingAddrHI = 0;
1208
1209 s->RxBuf = 0;
1210
1211 rtl8139_reset_rxring(s, 8192);
1212
1213 /* ACK the reset */
1214 s->TxConfig = 0;
1215
1216 #if 0
1217 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1218 s->clock_enabled = 0;
1219 #else
1220 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1221 s->clock_enabled = 1;
1222 #endif
1223
1224 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1225
1226 /* set initial state data */
1227 s->Config0 = 0x0; /* No boot ROM */
1228 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1229 s->Config3 = 0x1; /* fast back-to-back compatible */
1230 s->Config5 = 0x0;
1231
1232 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1233
1234 s->CpCmd = 0x0; /* reset C+ mode */
1235
1236 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1237 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1238 s->BasicModeCtrl = 0x1000; // autonegotiation
1239
1240 s->BasicModeStatus = 0x7809;
1241 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1242 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1243 s->BasicModeStatus |= 0x0004; /* link is up */
1244
1245 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1246 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1247 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1248
1249 /* also reset timer and disable timer interrupt */
1250 s->TCTR = 0;
1251 s->TimerInt = 0;
1252 s->TCTR_base = 0;
1253
1254 /* reset tally counters */
1255 RTL8139TallyCounters_clear(&s->tally_counters);
1256 }
1257
1258 void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1259 {
1260 counters->TxOk = 0;
1261 counters->RxOk = 0;
1262 counters->TxERR = 0;
1263 counters->RxERR = 0;
1264 counters->MissPkt = 0;
1265 counters->FAE = 0;
1266 counters->Tx1Col = 0;
1267 counters->TxMCol = 0;
1268 counters->RxOkPhy = 0;
1269 counters->RxOkBrd = 0;
1270 counters->RxOkMul = 0;
1271 counters->TxAbt = 0;
1272 counters->TxUndrn = 0;
1273 }
1274
1275 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1276 {
1277 uint16_t val16;
1278 uint32_t val32;
1279 uint64_t val64;
1280
1281 val64 = cpu_to_le64(tally_counters->TxOk);
1282 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1283
1284 val64 = cpu_to_le64(tally_counters->RxOk);
1285 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1286
1287 val64 = cpu_to_le64(tally_counters->TxERR);
1288 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1289
1290 val32 = cpu_to_le32(tally_counters->RxERR);
1291 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1292
1293 val16 = cpu_to_le16(tally_counters->MissPkt);
1294 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1295
1296 val16 = cpu_to_le16(tally_counters->FAE);
1297 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1298
1299 val32 = cpu_to_le32(tally_counters->Tx1Col);
1300 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1301
1302 val32 = cpu_to_le32(tally_counters->TxMCol);
1303 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1304
1305 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1306 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1307
1308 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1309 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1310
1311 val32 = cpu_to_le32(tally_counters->RxOkMul);
1312 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1313
1314 val16 = cpu_to_le16(tally_counters->TxAbt);
1315 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1316
1317 val16 = cpu_to_le16(tally_counters->TxUndrn);
1318 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1319 }
1320
1321 /* Loads values of tally counters from VM state file */
1322 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1323 {
1324 qemu_get_be64s(f, &tally_counters->TxOk);
1325 qemu_get_be64s(f, &tally_counters->RxOk);
1326 qemu_get_be64s(f, &tally_counters->TxERR);
1327 qemu_get_be32s(f, &tally_counters->RxERR);
1328 qemu_get_be16s(f, &tally_counters->MissPkt);
1329 qemu_get_be16s(f, &tally_counters->FAE);
1330 qemu_get_be32s(f, &tally_counters->Tx1Col);
1331 qemu_get_be32s(f, &tally_counters->TxMCol);
1332 qemu_get_be64s(f, &tally_counters->RxOkPhy);
1333 qemu_get_be64s(f, &tally_counters->RxOkBrd);
1334 qemu_get_be32s(f, &tally_counters->RxOkMul);
1335 qemu_get_be16s(f, &tally_counters->TxAbt);
1336 qemu_get_be16s(f, &tally_counters->TxUndrn);
1337 }
1338
1339 /* Saves values of tally counters to VM state file */
1340 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1341 {
1342 qemu_put_be64s(f, &tally_counters->TxOk);
1343 qemu_put_be64s(f, &tally_counters->RxOk);
1344 qemu_put_be64s(f, &tally_counters->TxERR);
1345 qemu_put_be32s(f, &tally_counters->RxERR);
1346 qemu_put_be16s(f, &tally_counters->MissPkt);
1347 qemu_put_be16s(f, &tally_counters->FAE);
1348 qemu_put_be32s(f, &tally_counters->Tx1Col);
1349 qemu_put_be32s(f, &tally_counters->TxMCol);
1350 qemu_put_be64s(f, &tally_counters->RxOkPhy);
1351 qemu_put_be64s(f, &tally_counters->RxOkBrd);
1352 qemu_put_be32s(f, &tally_counters->RxOkMul);
1353 qemu_put_be16s(f, &tally_counters->TxAbt);
1354 qemu_put_be16s(f, &tally_counters->TxUndrn);
1355 }
1356
1357 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1358 {
1359 val &= 0xff;
1360
1361 DEBUG_PRINT(("RTL8139: ChipCmd write val=0x%08x\n", val));
1362
1363 if (val & CmdReset)
1364 {
1365 DEBUG_PRINT(("RTL8139: ChipCmd reset\n"));
1366 rtl8139_reset(s);
1367 }
1368 if (val & CmdRxEnb)
1369 {
1370 DEBUG_PRINT(("RTL8139: ChipCmd enable receiver\n"));
1371
1372 s->currCPlusRxDesc = 0;
1373 }
1374 if (val & CmdTxEnb)
1375 {
1376 DEBUG_PRINT(("RTL8139: ChipCmd enable transmitter\n"));
1377
1378 s->currCPlusTxDesc = 0;
1379 }
1380
1381 /* mask unwriteable bits */
1382 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1383
1384 /* Deassert reset pin before next read */
1385 val &= ~CmdReset;
1386
1387 s->bChipCmdState = val;
1388 }
1389
1390 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1391 {
1392 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1393
1394 if (unread != 0)
1395 {
1396 DEBUG_PRINT(("RTL8139: receiver buffer data available 0x%04x\n", unread));
1397 return 0;
1398 }
1399
1400 DEBUG_PRINT(("RTL8139: receiver buffer is empty\n"));
1401
1402 return 1;
1403 }
1404
1405 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1406 {
1407 uint32_t ret = s->bChipCmdState;
1408
1409 if (rtl8139_RxBufferEmpty(s))
1410 ret |= RxBufEmpty;
1411
1412 DEBUG_PRINT(("RTL8139: ChipCmd read val=0x%04x\n", ret));
1413
1414 return ret;
1415 }
1416
1417 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1418 {
1419 val &= 0xffff;
1420
1421 DEBUG_PRINT(("RTL8139C+ command register write(w) val=0x%04x\n", val));
1422
1423 /* mask unwriteable bits */
1424 val = SET_MASKED(val, 0xff84, s->CpCmd);
1425
1426 s->CpCmd = val;
1427 }
1428
1429 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1430 {
1431 uint32_t ret = s->CpCmd;
1432
1433 DEBUG_PRINT(("RTL8139C+ command register read(w) val=0x%04x\n", ret));
1434
1435 return ret;
1436 }
1437
1438 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1439 {
1440 DEBUG_PRINT(("RTL8139C+ IntrMitigate register write(w) val=0x%04x\n", val));
1441 }
1442
1443 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1444 {
1445 uint32_t ret = 0;
1446
1447 DEBUG_PRINT(("RTL8139C+ IntrMitigate register read(w) val=0x%04x\n", ret));
1448
1449 return ret;
1450 }
1451
1452 static int rtl8139_config_writeable(RTL8139State *s)
1453 {
1454 if (s->Cfg9346 & Cfg9346_Unlock)
1455 {
1456 return 1;
1457 }
1458
1459 DEBUG_PRINT(("RTL8139: Configuration registers are write-protected\n"));
1460
1461 return 0;
1462 }
1463
1464 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1465 {
1466 val &= 0xffff;
1467
1468 DEBUG_PRINT(("RTL8139: BasicModeCtrl register write(w) val=0x%04x\n", val));
1469
1470 /* mask unwriteable bits */
1471 uint32_t mask = 0x4cff;
1472
1473 if (1 || !rtl8139_config_writeable(s))
1474 {
1475 /* Speed setting and autonegotiation enable bits are read-only */
1476 mask |= 0x3000;
1477 /* Duplex mode setting is read-only */
1478 mask |= 0x0100;
1479 }
1480
1481 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1482
1483 s->BasicModeCtrl = val;
1484 }
1485
1486 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1487 {
1488 uint32_t ret = s->BasicModeCtrl;
1489
1490 DEBUG_PRINT(("RTL8139: BasicModeCtrl register read(w) val=0x%04x\n", ret));
1491
1492 return ret;
1493 }
1494
1495 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1496 {
1497 val &= 0xffff;
1498
1499 DEBUG_PRINT(("RTL8139: BasicModeStatus register write(w) val=0x%04x\n", val));
1500
1501 /* mask unwriteable bits */
1502 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1503
1504 s->BasicModeStatus = val;
1505 }
1506
1507 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1508 {
1509 uint32_t ret = s->BasicModeStatus;
1510
1511 DEBUG_PRINT(("RTL8139: BasicModeStatus register read(w) val=0x%04x\n", ret));
1512
1513 return ret;
1514 }
1515
1516 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1517 {
1518 val &= 0xff;
1519
1520 DEBUG_PRINT(("RTL8139: Cfg9346 write val=0x%02x\n", val));
1521
1522 /* mask unwriteable bits */
1523 val = SET_MASKED(val, 0x31, s->Cfg9346);
1524
1525 uint32_t opmode = val & 0xc0;
1526 uint32_t eeprom_val = val & 0xf;
1527
1528 if (opmode == 0x80) {
1529 /* eeprom access */
1530 int eecs = (eeprom_val & 0x08)?1:0;
1531 int eesk = (eeprom_val & 0x04)?1:0;
1532 int eedi = (eeprom_val & 0x02)?1:0;
1533 prom9346_set_wire(s, eecs, eesk, eedi);
1534 } else if (opmode == 0x40) {
1535 /* Reset. */
1536 val = 0;
1537 rtl8139_reset(s);
1538 }
1539
1540 s->Cfg9346 = val;
1541 }
1542
1543 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1544 {
1545 uint32_t ret = s->Cfg9346;
1546
1547 uint32_t opmode = ret & 0xc0;
1548
1549 if (opmode == 0x80)
1550 {
1551 /* eeprom access */
1552 int eedo = prom9346_get_wire(s);
1553 if (eedo)
1554 {
1555 ret |= 0x01;
1556 }
1557 else
1558 {
1559 ret &= ~0x01;
1560 }
1561 }
1562
1563 DEBUG_PRINT(("RTL8139: Cfg9346 read val=0x%02x\n", ret));
1564
1565 return ret;
1566 }
1567
1568 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1569 {
1570 val &= 0xff;
1571
1572 DEBUG_PRINT(("RTL8139: Config0 write val=0x%02x\n", val));
1573
1574 if (!rtl8139_config_writeable(s))
1575 return;
1576
1577 /* mask unwriteable bits */
1578 val = SET_MASKED(val, 0xf8, s->Config0);
1579
1580 s->Config0 = val;
1581 }
1582
1583 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1584 {
1585 uint32_t ret = s->Config0;
1586
1587 DEBUG_PRINT(("RTL8139: Config0 read val=0x%02x\n", ret));
1588
1589 return ret;
1590 }
1591
1592 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1593 {
1594 val &= 0xff;
1595
1596 DEBUG_PRINT(("RTL8139: Config1 write val=0x%02x\n", val));
1597
1598 if (!rtl8139_config_writeable(s))
1599 return;
1600
1601 /* mask unwriteable bits */
1602 val = SET_MASKED(val, 0xC, s->Config1);
1603
1604 s->Config1 = val;
1605 }
1606
1607 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1608 {
1609 uint32_t ret = s->Config1;
1610
1611 DEBUG_PRINT(("RTL8139: Config1 read val=0x%02x\n", ret));
1612
1613 return ret;
1614 }
1615
1616 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1617 {
1618 val &= 0xff;
1619
1620 DEBUG_PRINT(("RTL8139: Config3 write val=0x%02x\n", val));
1621
1622 if (!rtl8139_config_writeable(s))
1623 return;
1624
1625 /* mask unwriteable bits */
1626 val = SET_MASKED(val, 0x8F, s->Config3);
1627
1628 s->Config3 = val;
1629 }
1630
1631 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1632 {
1633 uint32_t ret = s->Config3;
1634
1635 DEBUG_PRINT(("RTL8139: Config3 read val=0x%02x\n", ret));
1636
1637 return ret;
1638 }
1639
1640 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1641 {
1642 val &= 0xff;
1643
1644 DEBUG_PRINT(("RTL8139: Config4 write val=0x%02x\n", val));
1645
1646 if (!rtl8139_config_writeable(s))
1647 return;
1648
1649 /* mask unwriteable bits */
1650 val = SET_MASKED(val, 0x0a, s->Config4);
1651
1652 s->Config4 = val;
1653 }
1654
1655 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1656 {
1657 uint32_t ret = s->Config4;
1658
1659 DEBUG_PRINT(("RTL8139: Config4 read val=0x%02x\n", ret));
1660
1661 return ret;
1662 }
1663
1664 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1665 {
1666 val &= 0xff;
1667
1668 DEBUG_PRINT(("RTL8139: Config5 write val=0x%02x\n", val));
1669
1670 /* mask unwriteable bits */
1671 val = SET_MASKED(val, 0x80, s->Config5);
1672
1673 s->Config5 = val;
1674 }
1675
1676 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1677 {
1678 uint32_t ret = s->Config5;
1679
1680 DEBUG_PRINT(("RTL8139: Config5 read val=0x%02x\n", ret));
1681
1682 return ret;
1683 }
1684
1685 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1686 {
1687 if (!rtl8139_transmitter_enabled(s))
1688 {
1689 DEBUG_PRINT(("RTL8139: transmitter disabled; no TxConfig write val=0x%08x\n", val));
1690 return;
1691 }
1692
1693 DEBUG_PRINT(("RTL8139: TxConfig write val=0x%08x\n", val));
1694
1695 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1696
1697 s->TxConfig = val;
1698 }
1699
1700 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1701 {
1702 DEBUG_PRINT(("RTL8139C TxConfig via write(b) val=0x%02x\n", val));
1703
1704 uint32_t tc = s->TxConfig;
1705 tc &= 0xFFFFFF00;
1706 tc |= (val & 0x000000FF);
1707 rtl8139_TxConfig_write(s, tc);
1708 }
1709
1710 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1711 {
1712 uint32_t ret = s->TxConfig;
1713
1714 DEBUG_PRINT(("RTL8139: TxConfig read val=0x%04x\n", ret));
1715
1716 return ret;
1717 }
1718
1719 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1720 {
1721 DEBUG_PRINT(("RTL8139: RxConfig write val=0x%08x\n", val));
1722
1723 /* mask unwriteable bits */
1724 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1725
1726 s->RxConfig = val;
1727
1728 /* reset buffer size and read/write pointers */
1729 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1730
1731 DEBUG_PRINT(("RTL8139: RxConfig write reset buffer size to %d\n", s->RxBufferSize));
1732 }
1733
1734 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1735 {
1736 uint32_t ret = s->RxConfig;
1737
1738 DEBUG_PRINT(("RTL8139: RxConfig read val=0x%08x\n", ret));
1739
1740 return ret;
1741 }
1742
1743 static void rtl8139_transfer_frame(RTL8139State *s, const uint8_t *buf, int size, int do_interrupt)
1744 {
1745 if (!size)
1746 {
1747 DEBUG_PRINT(("RTL8139: +++ empty ethernet frame\n"));
1748 return;
1749 }
1750
1751 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1752 {
1753 DEBUG_PRINT(("RTL8139: +++ transmit loopback mode\n"));
1754 rtl8139_do_receive(s, buf, size, do_interrupt);
1755 }
1756 else
1757 {
1758 qemu_send_packet(s->vc, buf, size);
1759 }
1760 }
1761
1762 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1763 {
1764 if (!rtl8139_transmitter_enabled(s))
1765 {
1766 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: transmitter disabled\n",
1767 descriptor));
1768 return 0;
1769 }
1770
1771 if (s->TxStatus[descriptor] & TxHostOwns)
1772 {
1773 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: owned by host (%08x)\n",
1774 descriptor, s->TxStatus[descriptor]));
1775 return 0;
1776 }
1777
1778 DEBUG_PRINT(("RTL8139: +++ transmitting from descriptor %d\n", descriptor));
1779
1780 int txsize = s->TxStatus[descriptor] & 0x1fff;
1781 uint8_t txbuffer[0x2000];
1782
1783 DEBUG_PRINT(("RTL8139: +++ transmit reading %d bytes from host memory at 0x%08x\n",
1784 txsize, s->TxAddr[descriptor]));
1785
1786 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1787
1788 /* Mark descriptor as transferred */
1789 s->TxStatus[descriptor] |= TxHostOwns;
1790 s->TxStatus[descriptor] |= TxStatOK;
1791
1792 rtl8139_transfer_frame(s, txbuffer, txsize, 0);
1793
1794 DEBUG_PRINT(("RTL8139: +++ transmitted %d bytes from descriptor %d\n", txsize, descriptor));
1795
1796 /* update interrupt */
1797 s->IntrStatus |= TxOK;
1798 rtl8139_update_irq(s);
1799
1800 return 1;
1801 }
1802
1803 /* structures and macros for task offloading */
1804 typedef struct ip_header
1805 {
1806 uint8_t ip_ver_len; /* version and header length */
1807 uint8_t ip_tos; /* type of service */
1808 uint16_t ip_len; /* total length */
1809 uint16_t ip_id; /* identification */
1810 uint16_t ip_off; /* fragment offset field */
1811 uint8_t ip_ttl; /* time to live */
1812 uint8_t ip_p; /* protocol */
1813 uint16_t ip_sum; /* checksum */
1814 uint32_t ip_src,ip_dst; /* source and dest address */
1815 } ip_header;
1816
1817 #define IP_HEADER_VERSION_4 4
1818 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1819 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1820
1821 typedef struct tcp_header
1822 {
1823 uint16_t th_sport; /* source port */
1824 uint16_t th_dport; /* destination port */
1825 uint32_t th_seq; /* sequence number */
1826 uint32_t th_ack; /* acknowledgement number */
1827 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1828 uint16_t th_win; /* window */
1829 uint16_t th_sum; /* checksum */
1830 uint16_t th_urp; /* urgent pointer */
1831 } tcp_header;
1832
1833 typedef struct udp_header
1834 {
1835 uint16_t uh_sport; /* source port */
1836 uint16_t uh_dport; /* destination port */
1837 uint16_t uh_ulen; /* udp length */
1838 uint16_t uh_sum; /* udp checksum */
1839 } udp_header;
1840
1841 typedef struct ip_pseudo_header
1842 {
1843 uint32_t ip_src;
1844 uint32_t ip_dst;
1845 uint8_t zeros;
1846 uint8_t ip_proto;
1847 uint16_t ip_payload;
1848 } ip_pseudo_header;
1849
1850 #define IP_PROTO_TCP 6
1851 #define IP_PROTO_UDP 17
1852
1853 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1854 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1855 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1856
1857 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1858
1859 #define TCP_FLAG_FIN 0x01
1860 #define TCP_FLAG_PUSH 0x08
1861
1862 /* produces ones' complement sum of data */
1863 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1864 {
1865 uint32_t result = 0;
1866
1867 for (; len > 1; data+=2, len-=2)
1868 {
1869 result += *(uint16_t*)data;
1870 }
1871
1872 /* add the remainder byte */
1873 if (len)
1874 {
1875 uint8_t odd[2] = {*data, 0};
1876 result += *(uint16_t*)odd;
1877 }
1878
1879 while (result>>16)
1880 result = (result & 0xffff) + (result >> 16);
1881
1882 return result;
1883 }
1884
1885 static uint16_t ip_checksum(void *data, size_t len)
1886 {
1887 return ~ones_complement_sum((uint8_t*)data, len);
1888 }
1889
1890 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1891 {
1892 if (!rtl8139_transmitter_enabled(s))
1893 {
1894 DEBUG_PRINT(("RTL8139: +++ C+ mode: transmitter disabled\n"));
1895 return 0;
1896 }
1897
1898 if (!rtl8139_cp_transmitter_enabled(s))
1899 {
1900 DEBUG_PRINT(("RTL8139: +++ C+ mode: C+ transmitter disabled\n"));
1901 return 0 ;
1902 }
1903
1904 int descriptor = s->currCPlusTxDesc;
1905
1906 target_phys_addr_t cplus_tx_ring_desc =
1907 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1908
1909 /* Normal priority ring */
1910 cplus_tx_ring_desc += 16 * descriptor;
1911
1912 DEBUG_PRINT(("RTL8139: +++ C+ mode reading TX descriptor %d from host memory at %08x0x%08x = 0x%8lx\n",
1913 descriptor, s->TxAddr[1], s->TxAddr[0], cplus_tx_ring_desc));
1914
1915 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1916
1917 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1918 txdw0 = le32_to_cpu(val);
1919 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1920 txdw1 = le32_to_cpu(val);
1921 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1922 txbufLO = le32_to_cpu(val);
1923 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1924 txbufHI = le32_to_cpu(val);
1925
1926 DEBUG_PRINT(("RTL8139: +++ C+ mode TX descriptor %d %08x %08x %08x %08x\n",
1927 descriptor,
1928 txdw0, txdw1, txbufLO, txbufHI));
1929
1930 /* w0 ownership flag */
1931 #define CP_TX_OWN (1<<31)
1932 /* w0 end of ring flag */
1933 #define CP_TX_EOR (1<<30)
1934 /* first segment of received packet flag */
1935 #define CP_TX_FS (1<<29)
1936 /* last segment of received packet flag */
1937 #define CP_TX_LS (1<<28)
1938 /* large send packet flag */
1939 #define CP_TX_LGSEN (1<<27)
1940 /* large send MSS mask, bits 16...25 */
1941 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1942
1943 /* IP checksum offload flag */
1944 #define CP_TX_IPCS (1<<18)
1945 /* UDP checksum offload flag */
1946 #define CP_TX_UDPCS (1<<17)
1947 /* TCP checksum offload flag */
1948 #define CP_TX_TCPCS (1<<16)
1949
1950 /* w0 bits 0...15 : buffer size */
1951 #define CP_TX_BUFFER_SIZE (1<<16)
1952 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
1953 /* w1 tag available flag */
1954 #define CP_RX_TAGC (1<<17)
1955 /* w1 bits 0...15 : VLAN tag */
1956 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
1957 /* w2 low 32bit of Rx buffer ptr */
1958 /* w3 high 32bit of Rx buffer ptr */
1959
1960 /* set after transmission */
1961 /* FIFO underrun flag */
1962 #define CP_TX_STATUS_UNF (1<<25)
1963 /* transmit error summary flag, valid if set any of three below */
1964 #define CP_TX_STATUS_TES (1<<23)
1965 /* out-of-window collision flag */
1966 #define CP_TX_STATUS_OWC (1<<22)
1967 /* link failure flag */
1968 #define CP_TX_STATUS_LNKF (1<<21)
1969 /* excessive collisions flag */
1970 #define CP_TX_STATUS_EXC (1<<20)
1971
1972 if (!(txdw0 & CP_TX_OWN))
1973 {
1974 DEBUG_PRINT(("RTL8139: C+ Tx mode : descriptor %d is owned by host\n", descriptor));
1975 return 0 ;
1976 }
1977
1978 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : transmitting from descriptor %d\n", descriptor));
1979
1980 if (txdw0 & CP_TX_FS)
1981 {
1982 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is first segment descriptor\n", descriptor));
1983
1984 /* reset internal buffer offset */
1985 s->cplus_txbuffer_offset = 0;
1986 }
1987
1988 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
1989 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
1990
1991 /* make sure we have enough space to assemble the packet */
1992 if (!s->cplus_txbuffer)
1993 {
1994 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
1995 s->cplus_txbuffer = malloc(s->cplus_txbuffer_len);
1996 s->cplus_txbuffer_offset = 0;
1997
1998 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer allocated space %d\n", s->cplus_txbuffer_len));
1999 }
2000
2001 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2002 {
2003 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2004 s->cplus_txbuffer = realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2005
2006 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer space changed to %d\n", s->cplus_txbuffer_len));
2007 }
2008
2009 if (!s->cplus_txbuffer)
2010 {
2011 /* out of memory */
2012
2013 DEBUG_PRINT(("RTL8139: +++ C+ mode transmiter failed to reallocate %d bytes\n", s->cplus_txbuffer_len));
2014
2015 /* update tally counter */
2016 ++s->tally_counters.TxERR;
2017 ++s->tally_counters.TxAbt;
2018
2019 return 0;
2020 }
2021
2022 /* append more data to the packet */
2023
2024 DEBUG_PRINT(("RTL8139: +++ C+ mode transmit reading %d bytes from host memory at %016" PRIx64 " to offset %d\n",
2025 txsize, (uint64_t)tx_addr, s->cplus_txbuffer_offset));
2026
2027 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2028 s->cplus_txbuffer_offset += txsize;
2029
2030 /* seek to next Rx descriptor */
2031 if (txdw0 & CP_TX_EOR)
2032 {
2033 s->currCPlusTxDesc = 0;
2034 }
2035 else
2036 {
2037 ++s->currCPlusTxDesc;
2038 if (s->currCPlusTxDesc >= 64)
2039 s->currCPlusTxDesc = 0;
2040 }
2041
2042 /* transfer ownership to target */
2043 txdw0 &= ~CP_RX_OWN;
2044
2045 /* reset error indicator bits */
2046 txdw0 &= ~CP_TX_STATUS_UNF;
2047 txdw0 &= ~CP_TX_STATUS_TES;
2048 txdw0 &= ~CP_TX_STATUS_OWC;
2049 txdw0 &= ~CP_TX_STATUS_LNKF;
2050 txdw0 &= ~CP_TX_STATUS_EXC;
2051
2052 /* update ring data */
2053 val = cpu_to_le32(txdw0);
2054 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2055 // val = cpu_to_le32(txdw1);
2056 // cpu_physical_memory_write(cplus_tx_ring_desc+4, &val, 4);
2057
2058 /* Now decide if descriptor being processed is holding the last segment of packet */
2059 if (txdw0 & CP_TX_LS)
2060 {
2061 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is last segment descriptor\n", descriptor));
2062
2063 /* can transfer fully assembled packet */
2064
2065 uint8_t *saved_buffer = s->cplus_txbuffer;
2066 int saved_size = s->cplus_txbuffer_offset;
2067 int saved_buffer_len = s->cplus_txbuffer_len;
2068
2069 /* reset the card space to protect from recursive call */
2070 s->cplus_txbuffer = NULL;
2071 s->cplus_txbuffer_offset = 0;
2072 s->cplus_txbuffer_len = 0;
2073
2074 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2075 {
2076 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task checksum\n"));
2077
2078 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
2079 #define ETH_HLEN 14
2080 #define ETH_MTU 1500
2081
2082 /* ip packet header */
2083 ip_header *ip = 0;
2084 int hlen = 0;
2085 uint8_t ip_protocol = 0;
2086 uint16_t ip_data_len = 0;
2087
2088 uint8_t *eth_payload_data = 0;
2089 size_t eth_payload_len = 0;
2090
2091 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2092 if (proto == ETH_P_IP)
2093 {
2094 DEBUG_PRINT(("RTL8139: +++ C+ mode has IP packet\n"));
2095
2096 /* not aligned */
2097 eth_payload_data = saved_buffer + ETH_HLEN;
2098 eth_payload_len = saved_size - ETH_HLEN;
2099
2100 ip = (ip_header*)eth_payload_data;
2101
2102 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2103 DEBUG_PRINT(("RTL8139: +++ C+ mode packet has bad IP version %d expected %d\n", IP_HEADER_VERSION(ip), IP_HEADER_VERSION_4));
2104 ip = NULL;
2105 } else {
2106 hlen = IP_HEADER_LENGTH(ip);
2107 ip_protocol = ip->ip_p;
2108 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2109 }
2110 }
2111
2112 if (ip)
2113 {
2114 if (txdw0 & CP_TX_IPCS)
2115 {
2116 DEBUG_PRINT(("RTL8139: +++ C+ mode need IP checksum\n"));
2117
2118 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2119 /* bad packet header len */
2120 /* or packet too short */
2121 }
2122 else
2123 {
2124 ip->ip_sum = 0;
2125 ip->ip_sum = ip_checksum(ip, hlen);
2126 DEBUG_PRINT(("RTL8139: +++ C+ mode IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2127 }
2128 }
2129
2130 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2131 {
2132 #if defined (DEBUG_RTL8139)
2133 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2134 #endif
2135 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task TSO MTU=%d IP data %d frame data %d specified MSS=%d\n",
2136 ETH_MTU, ip_data_len, saved_size - ETH_HLEN, large_send_mss));
2137
2138 int tcp_send_offset = 0;
2139 int send_count = 0;
2140
2141 /* maximum IP header length is 60 bytes */
2142 uint8_t saved_ip_header[60];
2143
2144 /* save IP header template; data area is used in tcp checksum calculation */
2145 memcpy(saved_ip_header, eth_payload_data, hlen);
2146
2147 /* a placeholder for checksum calculation routine in tcp case */
2148 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2149 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2150
2151 /* pointer to TCP header */
2152 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2153
2154 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2155
2156 /* ETH_MTU = ip header len + tcp header len + payload */
2157 int tcp_data_len = ip_data_len - tcp_hlen;
2158 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2159
2160 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP data len %d TCP hlen %d TCP data len %d TCP chunk size %d\n",
2161 ip_data_len, tcp_hlen, tcp_data_len, tcp_chunk_size));
2162
2163 /* note the cycle below overwrites IP header data,
2164 but restores it from saved_ip_header before sending packet */
2165
2166 int is_last_frame = 0;
2167
2168 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2169 {
2170 uint16_t chunk_size = tcp_chunk_size;
2171
2172 /* check if this is the last frame */
2173 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2174 {
2175 is_last_frame = 1;
2176 chunk_size = tcp_data_len - tcp_send_offset;
2177 }
2178
2179 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP seqno %08x\n", be32_to_cpu(p_tcp_hdr->th_seq)));
2180
2181 /* add 4 TCP pseudoheader fields */
2182 /* copy IP source and destination fields */
2183 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2184
2185 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO calculating TCP checksum for packet with %d bytes data\n", tcp_hlen + chunk_size));
2186
2187 if (tcp_send_offset)
2188 {
2189 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2190 }
2191
2192 /* keep PUSH and FIN flags only for the last frame */
2193 if (!is_last_frame)
2194 {
2195 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2196 }
2197
2198 /* recalculate TCP checksum */
2199 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2200 p_tcpip_hdr->zeros = 0;
2201 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2202 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2203
2204 p_tcp_hdr->th_sum = 0;
2205
2206 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2207 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP checksum %04x\n", tcp_checksum));
2208
2209 p_tcp_hdr->th_sum = tcp_checksum;
2210
2211 /* restore IP header */
2212 memcpy(eth_payload_data, saved_ip_header, hlen);
2213
2214 /* set IP data length and recalculate IP checksum */
2215 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2216
2217 /* increment IP id for subsequent frames */
2218 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2219
2220 ip->ip_sum = 0;
2221 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2222 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2223
2224 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2225 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO transferring packet size %d\n", tso_send_size));
2226 rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 0);
2227
2228 /* add transferred count to TCP sequence number */
2229 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2230 ++send_count;
2231 }
2232
2233 /* Stop sending this frame */
2234 saved_size = 0;
2235 }
2236 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2237 {
2238 DEBUG_PRINT(("RTL8139: +++ C+ mode need TCP or UDP checksum\n"));
2239
2240 /* maximum IP header length is 60 bytes */
2241 uint8_t saved_ip_header[60];
2242 memcpy(saved_ip_header, eth_payload_data, hlen);
2243
2244 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2245 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2246
2247 /* add 4 TCP pseudoheader fields */
2248 /* copy IP source and destination fields */
2249 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2250
2251 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2252 {
2253 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating TCP checksum for packet with %d bytes data\n", ip_data_len));
2254
2255 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2256 p_tcpip_hdr->zeros = 0;
2257 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2258 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2259
2260 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2261
2262 p_tcp_hdr->th_sum = 0;
2263
2264 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2265 DEBUG_PRINT(("RTL8139: +++ C+ mode TCP checksum %04x\n", tcp_checksum));
2266
2267 p_tcp_hdr->th_sum = tcp_checksum;
2268 }
2269 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2270 {
2271 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating UDP checksum for packet with %d bytes data\n", ip_data_len));
2272
2273 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2274 p_udpip_hdr->zeros = 0;
2275 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2276 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2277
2278 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2279
2280 p_udp_hdr->uh_sum = 0;
2281
2282 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2283 DEBUG_PRINT(("RTL8139: +++ C+ mode UDP checksum %04x\n", udp_checksum));
2284
2285 p_udp_hdr->uh_sum = udp_checksum;
2286 }
2287
2288 /* restore IP header */
2289 memcpy(eth_payload_data, saved_ip_header, hlen);
2290 }
2291 }
2292 }
2293
2294 /* update tally counter */
2295 ++s->tally_counters.TxOk;
2296
2297 DEBUG_PRINT(("RTL8139: +++ C+ mode transmitting %d bytes packet\n", saved_size));
2298
2299 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1);
2300
2301 /* restore card space if there was no recursion and reset offset */
2302 if (!s->cplus_txbuffer)
2303 {
2304 s->cplus_txbuffer = saved_buffer;
2305 s->cplus_txbuffer_len = saved_buffer_len;
2306 s->cplus_txbuffer_offset = 0;
2307 }
2308 else
2309 {
2310 free(saved_buffer);
2311 }
2312 }
2313 else
2314 {
2315 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission continue to next descriptor\n"));
2316 }
2317
2318 return 1;
2319 }
2320
2321 static void rtl8139_cplus_transmit(RTL8139State *s)
2322 {
2323 int txcount = 0;
2324
2325 while (rtl8139_cplus_transmit_one(s))
2326 {
2327 ++txcount;
2328 }
2329
2330 /* Mark transfer completed */
2331 if (!txcount)
2332 {
2333 DEBUG_PRINT(("RTL8139: C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2334 s->currCPlusTxDesc));
2335 }
2336 else
2337 {
2338 /* update interrupt status */
2339 s->IntrStatus |= TxOK;
2340 rtl8139_update_irq(s);
2341 }
2342 }
2343
2344 static void rtl8139_transmit(RTL8139State *s)
2345 {
2346 int descriptor = s->currTxDesc, txcount = 0;
2347
2348 /*while*/
2349 if (rtl8139_transmit_one(s, descriptor))
2350 {
2351 ++s->currTxDesc;
2352 s->currTxDesc %= 4;
2353 ++txcount;
2354 }
2355
2356 /* Mark transfer completed */
2357 if (!txcount)
2358 {
2359 DEBUG_PRINT(("RTL8139: transmitter queue stalled, current TxDesc = %d\n", s->currTxDesc));
2360 }
2361 }
2362
2363 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2364 {
2365
2366 int descriptor = txRegOffset/4;
2367
2368 /* handle C+ transmit mode register configuration */
2369
2370 if (rtl8139_cp_transmitter_enabled(s))
2371 {
2372 DEBUG_PRINT(("RTL8139C+ DTCCR write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2373
2374 /* handle Dump Tally Counters command */
2375 s->TxStatus[descriptor] = val;
2376
2377 if (descriptor == 0 && (val & 0x8))
2378 {
2379 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2380
2381 /* dump tally counters to specified memory location */
2382 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2383
2384 /* mark dump completed */
2385 s->TxStatus[0] &= ~0x8;
2386 }
2387
2388 return;
2389 }
2390
2391 DEBUG_PRINT(("RTL8139: TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2392
2393 /* mask only reserved bits */
2394 val &= ~0xff00c000; /* these bits are reset on write */
2395 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2396
2397 s->TxStatus[descriptor] = val;
2398
2399 /* attempt to start transmission */
2400 rtl8139_transmit(s);
2401 }
2402
2403 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2404 {
2405 uint32_t ret = s->TxStatus[txRegOffset/4];
2406
2407 DEBUG_PRINT(("RTL8139: TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret));
2408
2409 return ret;
2410 }
2411
2412 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2413 {
2414 uint16_t ret = 0;
2415
2416 /* Simulate TSAD, it is read only anyway */
2417
2418 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2419 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2420 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2421 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2422
2423 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2424 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2425 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2426 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2427
2428 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2429 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2430 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2431 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2432
2433 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2434 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2435 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2436 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2437
2438
2439 DEBUG_PRINT(("RTL8139: TSAD read val=0x%04x\n", ret));
2440
2441 return ret;
2442 }
2443
2444 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2445 {
2446 uint16_t ret = s->CSCR;
2447
2448 DEBUG_PRINT(("RTL8139: CSCR read val=0x%04x\n", ret));
2449
2450 return ret;
2451 }
2452
2453 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2454 {
2455 DEBUG_PRINT(("RTL8139: TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val));
2456
2457 s->TxAddr[txAddrOffset/4] = val;
2458 }
2459
2460 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2461 {
2462 uint32_t ret = s->TxAddr[txAddrOffset/4];
2463
2464 DEBUG_PRINT(("RTL8139: TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret));
2465
2466 return ret;
2467 }
2468
2469 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2470 {
2471 DEBUG_PRINT(("RTL8139: RxBufPtr write val=0x%04x\n", val));
2472
2473 /* this value is off by 16 */
2474 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2475
2476 DEBUG_PRINT((" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2477 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
2478 }
2479
2480 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2481 {
2482 /* this value is off by 16 */
2483 uint32_t ret = s->RxBufPtr - 0x10;
2484
2485 DEBUG_PRINT(("RTL8139: RxBufPtr read val=0x%04x\n", ret));
2486
2487 return ret;
2488 }
2489
2490 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2491 {
2492 /* this value is NOT off by 16 */
2493 uint32_t ret = s->RxBufAddr;
2494
2495 DEBUG_PRINT(("RTL8139: RxBufAddr read val=0x%04x\n", ret));
2496
2497 return ret;
2498 }
2499
2500 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2501 {
2502 DEBUG_PRINT(("RTL8139: RxBuf write val=0x%08x\n", val));
2503
2504 s->RxBuf = val;
2505
2506 /* may need to reset rxring here */
2507 }
2508
2509 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2510 {
2511 uint32_t ret = s->RxBuf;
2512
2513 DEBUG_PRINT(("RTL8139: RxBuf read val=0x%08x\n", ret));
2514
2515 return ret;
2516 }
2517
2518 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2519 {
2520 DEBUG_PRINT(("RTL8139: IntrMask write(w) val=0x%04x\n", val));
2521
2522 /* mask unwriteable bits */
2523 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2524
2525 s->IntrMask = val;
2526
2527 rtl8139_update_irq(s);
2528 }
2529
2530 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2531 {
2532 uint32_t ret = s->IntrMask;
2533
2534 DEBUG_PRINT(("RTL8139: IntrMask read(w) val=0x%04x\n", ret));
2535
2536 return ret;
2537 }
2538
2539 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2540 {
2541 DEBUG_PRINT(("RTL8139: IntrStatus write(w) val=0x%04x\n", val));
2542
2543 #if 0
2544
2545 /* writing to ISR has no effect */
2546
2547 return;
2548
2549 #else
2550 uint16_t newStatus = s->IntrStatus & ~val;
2551
2552 /* mask unwriteable bits */
2553 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2554
2555 /* writing 1 to interrupt status register bit clears it */
2556 s->IntrStatus = 0;
2557 rtl8139_update_irq(s);
2558
2559 s->IntrStatus = newStatus;
2560 rtl8139_update_irq(s);
2561 #endif
2562 }
2563
2564 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2565 {
2566 uint32_t ret = s->IntrStatus;
2567
2568 DEBUG_PRINT(("RTL8139: IntrStatus read(w) val=0x%04x\n", ret));
2569
2570 #if 0
2571
2572 /* reading ISR clears all interrupts */
2573 s->IntrStatus = 0;
2574
2575 rtl8139_update_irq(s);
2576
2577 #endif
2578
2579 return ret;
2580 }
2581
2582 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2583 {
2584 DEBUG_PRINT(("RTL8139: MultiIntr write(w) val=0x%04x\n", val));
2585
2586 /* mask unwriteable bits */
2587 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2588
2589 s->MultiIntr = val;
2590 }
2591
2592 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2593 {
2594 uint32_t ret = s->MultiIntr;
2595
2596 DEBUG_PRINT(("RTL8139: MultiIntr read(w) val=0x%04x\n", ret));
2597
2598 return ret;
2599 }
2600
2601 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2602 {
2603 RTL8139State *s = opaque;
2604
2605 addr &= 0xff;
2606
2607 switch (addr)
2608 {
2609 case MAC0 ... MAC0+5:
2610 s->phys[addr - MAC0] = val;
2611 break;
2612 case MAC0+6 ... MAC0+7:
2613 /* reserved */
2614 break;
2615 case MAR0 ... MAR0+7:
2616 s->mult[addr - MAR0] = val;
2617 break;
2618 case ChipCmd:
2619 rtl8139_ChipCmd_write(s, val);
2620 break;
2621 case Cfg9346:
2622 rtl8139_Cfg9346_write(s, val);
2623 break;
2624 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2625 rtl8139_TxConfig_writeb(s, val);
2626 break;
2627 case Config0:
2628 rtl8139_Config0_write(s, val);
2629 break;
2630 case Config1:
2631 rtl8139_Config1_write(s, val);
2632 break;
2633 case Config3:
2634 rtl8139_Config3_write(s, val);
2635 break;
2636 case Config4:
2637 rtl8139_Config4_write(s, val);
2638 break;
2639 case Config5:
2640 rtl8139_Config5_write(s, val);
2641 break;
2642 case MediaStatus:
2643 /* ignore */
2644 DEBUG_PRINT(("RTL8139: not implemented write(b) to MediaStatus val=0x%02x\n", val));
2645 break;
2646
2647 case HltClk:
2648 DEBUG_PRINT(("RTL8139: HltClk write val=0x%08x\n", val));
2649 if (val == 'R')
2650 {
2651 s->clock_enabled = 1;
2652 }
2653 else if (val == 'H')
2654 {
2655 s->clock_enabled = 0;
2656 }
2657 break;
2658
2659 case TxThresh:
2660 DEBUG_PRINT(("RTL8139C+ TxThresh write(b) val=0x%02x\n", val));
2661 s->TxThresh = val;
2662 break;
2663
2664 case TxPoll:
2665 DEBUG_PRINT(("RTL8139C+ TxPoll write(b) val=0x%02x\n", val));
2666 if (val & (1 << 7))
2667 {
2668 DEBUG_PRINT(("RTL8139C+ TxPoll high priority transmission (not implemented)\n"));
2669 //rtl8139_cplus_transmit(s);
2670 }
2671 if (val & (1 << 6))
2672 {
2673 DEBUG_PRINT(("RTL8139C+ TxPoll normal priority transmission\n"));
2674 rtl8139_cplus_transmit(s);
2675 }
2676
2677 break;
2678
2679 default:
2680 DEBUG_PRINT(("RTL8139: not implemented write(b) addr=0x%x val=0x%02x\n", addr, val));
2681 break;
2682 }
2683 }
2684
2685 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2686 {
2687 RTL8139State *s = opaque;
2688
2689 addr &= 0xfe;
2690
2691 switch (addr)
2692 {
2693 case IntrMask:
2694 rtl8139_IntrMask_write(s, val);
2695 break;
2696
2697 case IntrStatus:
2698 rtl8139_IntrStatus_write(s, val);
2699 break;
2700
2701 case MultiIntr:
2702 rtl8139_MultiIntr_write(s, val);
2703 break;
2704
2705 case RxBufPtr:
2706 rtl8139_RxBufPtr_write(s, val);
2707 break;
2708
2709 case BasicModeCtrl:
2710 rtl8139_BasicModeCtrl_write(s, val);
2711 break;
2712 case BasicModeStatus:
2713 rtl8139_BasicModeStatus_write(s, val);
2714 break;
2715 case NWayAdvert:
2716 DEBUG_PRINT(("RTL8139: NWayAdvert write(w) val=0x%04x\n", val));
2717 s->NWayAdvert = val;
2718 break;
2719 case NWayLPAR:
2720 DEBUG_PRINT(("RTL8139: forbidden NWayLPAR write(w) val=0x%04x\n", val));
2721 break;
2722 case NWayExpansion:
2723 DEBUG_PRINT(("RTL8139: NWayExpansion write(w) val=0x%04x\n", val));
2724 s->NWayExpansion = val;
2725 break;
2726
2727 case CpCmd:
2728 rtl8139_CpCmd_write(s, val);
2729 break;
2730
2731 case IntrMitigate:
2732 rtl8139_IntrMitigate_write(s, val);
2733 break;
2734
2735 default:
2736 DEBUG_PRINT(("RTL8139: ioport write(w) addr=0x%x val=0x%04x via write(b)\n", addr, val));
2737
2738 rtl8139_io_writeb(opaque, addr, val & 0xff);
2739 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2740 break;
2741 }
2742 }
2743
2744 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2745 {
2746 RTL8139State *s = opaque;
2747
2748 addr &= 0xfc;
2749
2750 switch (addr)
2751 {
2752 case RxMissed:
2753 DEBUG_PRINT(("RTL8139: RxMissed clearing on write\n"));
2754 s->RxMissed = 0;
2755 break;
2756
2757 case TxConfig:
2758 rtl8139_TxConfig_write(s, val);
2759 break;
2760
2761 case RxConfig:
2762 rtl8139_RxConfig_write(s, val);
2763 break;
2764
2765 case TxStatus0 ... TxStatus0+4*4-1:
2766 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2767 break;
2768
2769 case TxAddr0 ... TxAddr0+4*4-1:
2770 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2771 break;
2772
2773 case RxBuf:
2774 rtl8139_RxBuf_write(s, val);
2775 break;
2776
2777 case RxRingAddrLO:
2778 DEBUG_PRINT(("RTL8139: C+ RxRing low bits write val=0x%08x\n", val));
2779 s->RxRingAddrLO = val;
2780 break;
2781
2782 case RxRingAddrHI:
2783 DEBUG_PRINT(("RTL8139: C+ RxRing high bits write val=0x%08x\n", val));
2784 s->RxRingAddrHI = val;
2785 break;
2786
2787 case Timer:
2788 DEBUG_PRINT(("RTL8139: TCTR Timer reset on write\n"));
2789 s->TCTR = 0;
2790 s->TCTR_base = qemu_get_clock(vm_clock);
2791 break;
2792
2793 case FlashReg:
2794 DEBUG_PRINT(("RTL8139: FlashReg TimerInt write val=0x%08x\n", val));
2795 s->TimerInt = val;
2796 break;
2797
2798 default:
2799 DEBUG_PRINT(("RTL8139: ioport write(l) addr=0x%x val=0x%08x via write(b)\n", addr, val));
2800 rtl8139_io_writeb(opaque, addr, val & 0xff);
2801 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2802 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2803 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2804 break;
2805 }
2806 }
2807
2808 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2809 {
2810 RTL8139State *s = opaque;
2811 int ret;
2812
2813 addr &= 0xff;
2814
2815 switch (addr)
2816 {
2817 case MAC0 ... MAC0+5:
2818 ret = s->phys[addr - MAC0];
2819 break;
2820 case MAC0+6 ... MAC0+7:
2821 ret = 0;
2822 break;
2823 case MAR0 ... MAR0+7:
2824 ret = s->mult[addr - MAR0];
2825 break;
2826 case ChipCmd:
2827 ret = rtl8139_ChipCmd_read(s);
2828 break;
2829 case Cfg9346:
2830 ret = rtl8139_Cfg9346_read(s);
2831 break;
2832 case Config0:
2833 ret = rtl8139_Config0_read(s);
2834 break;
2835 case Config1:
2836 ret = rtl8139_Config1_read(s);
2837 break;
2838 case Config3:
2839 ret = rtl8139_Config3_read(s);
2840 break;
2841 case Config4:
2842 ret = rtl8139_Config4_read(s);
2843 break;
2844 case Config5:
2845 ret = rtl8139_Config5_read(s);
2846 break;
2847
2848 case MediaStatus:
2849 ret = 0xd0;
2850 DEBUG_PRINT(("RTL8139: MediaStatus read 0x%x\n", ret));
2851 break;
2852
2853 case HltClk:
2854 ret = s->clock_enabled;
2855 DEBUG_PRINT(("RTL8139: HltClk read 0x%x\n", ret));
2856 break;
2857
2858 case PCIRevisionID:
2859 ret = RTL8139_PCI_REVID;
2860 DEBUG_PRINT(("RTL8139: PCI Revision ID read 0x%x\n", ret));
2861 break;
2862
2863 case TxThresh:
2864 ret = s->TxThresh;
2865 DEBUG_PRINT(("RTL8139C+ TxThresh read(b) val=0x%02x\n", ret));
2866 break;
2867
2868 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
2869 ret = s->TxConfig >> 24;
2870 DEBUG_PRINT(("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret));
2871 break;
2872
2873 default:
2874 DEBUG_PRINT(("RTL8139: not implemented read(b) addr=0x%x\n", addr));
2875 ret = 0;
2876 break;
2877 }
2878
2879 return ret;
2880 }
2881
2882 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
2883 {
2884 RTL8139State *s = opaque;
2885 uint32_t ret;
2886
2887 addr &= 0xfe; /* mask lower bit */
2888
2889 switch (addr)
2890 {
2891 case IntrMask:
2892 ret = rtl8139_IntrMask_read(s);
2893 break;
2894
2895 case IntrStatus:
2896 ret = rtl8139_IntrStatus_read(s);
2897 break;
2898
2899 case MultiIntr:
2900 ret = rtl8139_MultiIntr_read(s);
2901 break;
2902
2903 case RxBufPtr:
2904 ret = rtl8139_RxBufPtr_read(s);
2905 break;
2906
2907 case RxBufAddr:
2908 ret = rtl8139_RxBufAddr_read(s);
2909 break;
2910
2911 case BasicModeCtrl:
2912 ret = rtl8139_BasicModeCtrl_read(s);
2913 break;
2914 case BasicModeStatus:
2915 ret = rtl8139_BasicModeStatus_read(s);
2916 break;
2917 case NWayAdvert:
2918 ret = s->NWayAdvert;
2919 DEBUG_PRINT(("RTL8139: NWayAdvert read(w) val=0x%04x\n", ret));
2920 break;
2921 case NWayLPAR:
2922 ret = s->NWayLPAR;
2923 DEBUG_PRINT(("RTL8139: NWayLPAR read(w) val=0x%04x\n", ret));
2924 break;
2925 case NWayExpansion:
2926 ret = s->NWayExpansion;
2927 DEBUG_PRINT(("RTL8139: NWayExpansion read(w) val=0x%04x\n", ret));
2928 break;
2929
2930 case CpCmd:
2931 ret = rtl8139_CpCmd_read(s);
2932 break;
2933
2934 case IntrMitigate:
2935 ret = rtl8139_IntrMitigate_read(s);
2936 break;
2937
2938 case TxSummary:
2939 ret = rtl8139_TSAD_read(s);
2940 break;
2941
2942 case CSCR:
2943 ret = rtl8139_CSCR_read(s);
2944 break;
2945
2946 default:
2947 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x via read(b)\n", addr));
2948
2949 ret = rtl8139_io_readb(opaque, addr);
2950 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
2951
2952 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x val=0x%04x\n", addr, ret));
2953 break;
2954 }
2955
2956 return ret;
2957 }
2958
2959 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
2960 {
2961 RTL8139State *s = opaque;
2962 uint32_t ret;
2963
2964 addr &= 0xfc; /* also mask low 2 bits */
2965
2966 switch (addr)
2967 {
2968 case RxMissed:
2969 ret = s->RxMissed;
2970
2971 DEBUG_PRINT(("RTL8139: RxMissed read val=0x%08x\n", ret));
2972 break;
2973
2974 case TxConfig:
2975 ret = rtl8139_TxConfig_read(s);
2976 break;
2977
2978 case RxConfig:
2979 ret = rtl8139_RxConfig_read(s);
2980 break;
2981
2982 case TxStatus0 ... TxStatus0+4*4-1:
2983 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
2984 break;
2985
2986 case TxAddr0 ... TxAddr0+4*4-1:
2987 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
2988 break;
2989
2990 case RxBuf:
2991 ret = rtl8139_RxBuf_read(s);
2992 break;
2993
2994 case RxRingAddrLO:
2995 ret = s->RxRingAddrLO;
2996 DEBUG_PRINT(("RTL8139: C+ RxRing low bits read val=0x%08x\n", ret));
2997 break;
2998
2999 case RxRingAddrHI:
3000 ret = s->RxRingAddrHI;
3001 DEBUG_PRINT(("RTL8139: C+ RxRing high bits read val=0x%08x\n", ret));
3002 break;
3003
3004 case Timer:
3005 ret = s->TCTR;
3006 DEBUG_PRINT(("RTL8139: TCTR Timer read val=0x%08x\n", ret));
3007 break;
3008
3009 case FlashReg:
3010 ret = s->TimerInt;
3011 DEBUG_PRINT(("RTL8139: FlashReg TimerInt read val=0x%08x\n", ret));
3012 break;
3013
3014 default:
3015 DEBUG_PRINT(("RTL8139: ioport read(l) addr=0x%x via read(b)\n", addr));
3016
3017 ret = rtl8139_io_readb(opaque, addr);
3018 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3019 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3020 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3021
3022 DEBUG_PRINT(("RTL8139: read(l) addr=0x%x val=%08x\n", addr, ret));
3023 break;
3024 }
3025
3026 return ret;
3027 }
3028
3029 /* */
3030
3031 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3032 {
3033 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3034 }
3035
3036 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3037 {
3038 rtl8139_io_writew(opaque, addr & 0xFF, val);
3039 }
3040
3041 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3042 {
3043 rtl8139_io_writel(opaque, addr & 0xFF, val);
3044 }
3045
3046 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3047 {
3048 return rtl8139_io_readb(opaque, addr & 0xFF);
3049 }
3050
3051 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3052 {
3053 return rtl8139_io_readw(opaque, addr & 0xFF);
3054 }
3055
3056 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3057 {
3058 return rtl8139_io_readl(opaque, addr & 0xFF);
3059 }
3060
3061 /* */
3062
3063 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3064 {
3065 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3066 }
3067
3068 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3069 {
3070 #ifdef TARGET_WORDS_BIGENDIAN
3071 val = bswap16(val);
3072 #endif
3073 rtl8139_io_writew(opaque, addr & 0xFF, val);
3074 }
3075
3076 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3077 {
3078 #ifdef TARGET_WORDS_BIGENDIAN
3079 val = bswap32(val);
3080 #endif
3081 rtl8139_io_writel(opaque, addr & 0xFF, val);
3082 }
3083
3084 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3085 {
3086 return rtl8139_io_readb(opaque, addr & 0xFF);
3087 }
3088
3089 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3090 {
3091 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3092 #ifdef TARGET_WORDS_BIGENDIAN
3093 val = bswap16(val);
3094 #endif
3095 return val;
3096 }
3097
3098 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3099 {
3100 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3101 #ifdef TARGET_WORDS_BIGENDIAN
3102 val = bswap32(val);
3103 #endif
3104 return val;
3105 }
3106
3107 /* */
3108
3109 static void rtl8139_save(QEMUFile* f,void* opaque)
3110 {
3111 RTL8139State* s=(RTL8139State*)opaque;
3112 unsigned int i;
3113
3114 pci_device_save(s->pci_dev, f);
3115
3116 qemu_put_buffer(f, s->phys, 6);
3117 qemu_put_buffer(f, s->mult, 8);
3118
3119 for (i=0; i<4; ++i)
3120 {
3121 qemu_put_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3122 }
3123 for (i=0; i<4; ++i)
3124 {
3125 qemu_put_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3126 }
3127
3128 qemu_put_be32s(f, &s->RxBuf); /* Receive buffer */
3129 qemu_put_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3130 qemu_put_be32s(f, &s->RxBufPtr);
3131 qemu_put_be32s(f, &s->RxBufAddr);
3132
3133 qemu_put_be16s(f, &s->IntrStatus);
3134 qemu_put_be16s(f, &s->IntrMask);
3135
3136 qemu_put_be32s(f, &s->TxConfig);
3137 qemu_put_be32s(f, &s->RxConfig);
3138 qemu_put_be32s(f, &s->RxMissed);
3139 qemu_put_be16s(f, &s->CSCR);
3140
3141 qemu_put_8s(f, &s->Cfg9346);
3142 qemu_put_8s(f, &s->Config0);
3143 qemu_put_8s(f, &s->Config1);
3144 qemu_put_8s(f, &s->Config3);
3145 qemu_put_8s(f, &s->Config4);
3146 qemu_put_8s(f, &s->Config5);
3147
3148 qemu_put_8s(f, &s->clock_enabled);
3149 qemu_put_8s(f, &s->bChipCmdState);
3150
3151 qemu_put_be16s(f, &s->MultiIntr);
3152
3153 qemu_put_be16s(f, &s->BasicModeCtrl);
3154 qemu_put_be16s(f, &s->BasicModeStatus);
3155 qemu_put_be16s(f, &s->NWayAdvert);
3156 qemu_put_be16s(f, &s->NWayLPAR);
3157 qemu_put_be16s(f, &s->NWayExpansion);
3158
3159 qemu_put_be16s(f, &s->CpCmd);
3160 qemu_put_8s(f, &s->TxThresh);
3161
3162 i = 0;
3163 qemu_put_be32s(f, &i); /* unused. */
3164 qemu_put_buffer(f, s->macaddr, 6);
3165 qemu_put_be32(f, s->rtl8139_mmio_io_addr);
3166
3167 qemu_put_be32s(f, &s->currTxDesc);
3168 qemu_put_be32s(f, &s->currCPlusRxDesc);
3169 qemu_put_be32s(f, &s->currCPlusTxDesc);
3170 qemu_put_be32s(f, &s->RxRingAddrLO);
3171 qemu_put_be32s(f, &s->RxRingAddrHI);
3172
3173 for (i=0; i<EEPROM_9346_SIZE; ++i)
3174 {
3175 qemu_put_be16s(f, &s->eeprom.contents[i]);
3176 }
3177 qemu_put_be32(f, s->eeprom.mode);
3178 qemu_put_be32s(f, &s->eeprom.tick);
3179 qemu_put_8s(f, &s->eeprom.address);
3180 qemu_put_be16s(f, &s->eeprom.input);
3181 qemu_put_be16s(f, &s->eeprom.output);
3182
3183 qemu_put_8s(f, &s->eeprom.eecs);
3184 qemu_put_8s(f, &s->eeprom.eesk);
3185 qemu_put_8s(f, &s->eeprom.eedi);
3186 qemu_put_8s(f, &s->eeprom.eedo);
3187
3188 qemu_put_be32s(f, &s->TCTR);
3189 qemu_put_be32s(f, &s->TimerInt);
3190 qemu_put_be64(f, s->TCTR_base);
3191
3192 RTL8139TallyCounters_save(f, &s->tally_counters);
3193 }
3194
3195 static int rtl8139_load(QEMUFile* f,void* opaque,int version_id)
3196 {
3197 RTL8139State* s=(RTL8139State*)opaque;
3198 unsigned int i;
3199 int ret;
3200
3201 /* just 2 versions for now */
3202 if (version_id > 3)
3203 return -EINVAL;
3204
3205 if (version_id >= 3) {
3206 ret = pci_device_load(s->pci_dev, f);
3207 if (ret < 0)
3208 return ret;
3209 }
3210
3211 /* saved since version 1 */
3212 qemu_get_buffer(f, s->phys, 6);
3213 qemu_get_buffer(f, s->mult, 8);
3214
3215 for (i=0; i<4; ++i)
3216 {
3217 qemu_get_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3218 }
3219 for (i=0; i<4; ++i)
3220 {
3221 qemu_get_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3222 }
3223
3224 qemu_get_be32s(f, &s->RxBuf); /* Receive buffer */
3225 qemu_get_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3226 qemu_get_be32s(f, &s->RxBufPtr);
3227 qemu_get_be32s(f, &s->RxBufAddr);
3228
3229 qemu_get_be16s(f, &s->IntrStatus);
3230 qemu_get_be16s(f, &s->IntrMask);
3231
3232 qemu_get_be32s(f, &s->TxConfig);
3233 qemu_get_be32s(f, &s->RxConfig);
3234 qemu_get_be32s(f, &s->RxMissed);
3235 qemu_get_be16s(f, &s->CSCR);
3236
3237 qemu_get_8s(f, &s->Cfg9346);
3238 qemu_get_8s(f, &s->Config0);
3239 qemu_get_8s(f, &s->Config1);
3240 qemu_get_8s(f, &s->Config3);
3241 qemu_get_8s(f, &s->Config4);
3242 qemu_get_8s(f, &s->Config5);
3243
3244 qemu_get_8s(f, &s->clock_enabled);
3245 qemu_get_8s(f, &s->bChipCmdState);
3246
3247 qemu_get_be16s(f, &s->MultiIntr);
3248
3249 qemu_get_be16s(f, &s->BasicModeCtrl);
3250 qemu_get_be16s(f, &s->BasicModeStatus);
3251 qemu_get_be16s(f, &s->NWayAdvert);
3252 qemu_get_be16s(f, &s->NWayLPAR);
3253 qemu_get_be16s(f, &s->NWayExpansion);
3254
3255 qemu_get_be16s(f, &s->CpCmd);
3256 qemu_get_8s(f, &s->TxThresh);
3257
3258 qemu_get_be32s(f, &i); /* unused. */
3259 qemu_get_buffer(f, s->macaddr, 6);
3260 s->rtl8139_mmio_io_addr=qemu_get_be32(f);
3261
3262 qemu_get_be32s(f, &s->currTxDesc);
3263 qemu_get_be32s(f, &s->currCPlusRxDesc);
3264 qemu_get_be32s(f, &s->currCPlusTxDesc);
3265 qemu_get_be32s(f, &s->RxRingAddrLO);
3266 qemu_get_be32s(f, &s->RxRingAddrHI);
3267
3268 for (i=0; i<EEPROM_9346_SIZE; ++i)
3269 {
3270 qemu_get_be16s(f, &s->eeprom.contents[i]);
3271 }
3272 s->eeprom.mode=qemu_get_be32(f);
3273 qemu_get_be32s(f, &s->eeprom.tick);
3274 qemu_get_8s(f, &s->eeprom.address);
3275 qemu_get_be16s(f, &s->eeprom.input);
3276 qemu_get_be16s(f, &s->eeprom.output);
3277
3278 qemu_get_8s(f, &s->eeprom.eecs);
3279 qemu_get_8s(f, &s->eeprom.eesk);
3280 qemu_get_8s(f, &s->eeprom.eedi);
3281 qemu_get_8s(f, &s->eeprom.eedo);
3282
3283 /* saved since version 2 */
3284 if (version_id >= 2)
3285 {
3286 qemu_get_be32s(f, &s->TCTR);
3287 qemu_get_be32s(f, &s->TimerInt);
3288 s->TCTR_base=qemu_get_be64(f);
3289
3290 RTL8139TallyCounters_load(f, &s->tally_counters);
3291 }
3292 else
3293 {
3294 /* not saved, use default */
3295 s->TCTR = 0;
3296 s->TimerInt = 0;
3297 s->TCTR_base = 0;
3298
3299 RTL8139TallyCounters_clear(&s->tally_counters);
3300 }
3301
3302 return 0;
3303 }
3304
3305 /***********************************************************/
3306 /* PCI RTL8139 definitions */
3307
3308 typedef struct PCIRTL8139State {
3309 PCIDevice dev;
3310 RTL8139State rtl8139;
3311 } PCIRTL8139State;
3312
3313 static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num,
3314 uint32_t addr, uint32_t size, int type)
3315 {
3316 PCIRTL8139State *d = (PCIRTL8139State *)pci_dev;
3317 RTL8139State *s = &d->rtl8139;
3318
3319 cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr);
3320 }
3321
3322 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3323 uint32_t addr, uint32_t size, int type)
3324 {
3325 PCIRTL8139State *d = (PCIRTL8139State *)pci_dev;
3326 RTL8139State *s = &d->rtl8139;
3327
3328 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3329 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3330
3331 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3332 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3333
3334 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3335 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3336 }
3337
3338 static CPUReadMemoryFunc *rtl8139_mmio_read[3] = {
3339 rtl8139_mmio_readb,
3340 rtl8139_mmio_readw,
3341 rtl8139_mmio_readl,
3342 };
3343
3344 static CPUWriteMemoryFunc *rtl8139_mmio_write[3] = {
3345 rtl8139_mmio_writeb,
3346 rtl8139_mmio_writew,
3347 rtl8139_mmio_writel,
3348 };
3349
3350 static inline int64_t rtl8139_get_next_tctr_time(RTL8139State *s, int64_t current_time)
3351 {
3352 int64_t next_time = current_time +
3353 muldiv64(1, ticks_per_sec, PCI_FREQUENCY);
3354 if (next_time <= current_time)
3355 next_time = current_time + 1;
3356 return next_time;
3357 }
3358
3359 #if RTL8139_ONBOARD_TIMER
3360 static void rtl8139_timer(void *opaque)
3361 {
3362 RTL8139State *s = opaque;
3363
3364 int is_timeout = 0;
3365
3366 int64_t curr_time;
3367 uint32_t curr_tick;
3368
3369 if (!s->clock_enabled)
3370 {
3371 DEBUG_PRINT(("RTL8139: >>> timer: clock is not running\n"));
3372 return;
3373 }
3374
3375 curr_time = qemu_get_clock(vm_clock);
3376
3377 curr_tick = muldiv64(curr_time - s->TCTR_base, PCI_FREQUENCY, ticks_per_sec);
3378
3379 if (s->TimerInt && curr_tick >= s->TimerInt)
3380 {
3381 if (s->TCTR < s->TimerInt || curr_tick < s->TCTR)
3382 {
3383 is_timeout = 1;
3384 }
3385 }
3386
3387 s->TCTR = curr_tick;
3388
3389 // DEBUG_PRINT(("RTL8139: >>> timer: tick=%08u\n", s->TCTR));
3390
3391 if (is_timeout)
3392 {
3393 DEBUG_PRINT(("RTL8139: >>> timer: timeout tick=%08u\n", s->TCTR));
3394 s->IntrStatus |= PCSTimeout;
3395 rtl8139_update_irq(s);
3396 }
3397
3398 qemu_mod_timer(s->timer,
3399 rtl8139_get_next_tctr_time(s,curr_time));
3400 }
3401 #endif /* RTL8139_ONBOARD_TIMER */
3402
3403 void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn)
3404 {
3405 PCIRTL8139State *d;
3406 RTL8139State *s;
3407 uint8_t *pci_conf;
3408
3409 d = (PCIRTL8139State *)pci_register_device(bus,
3410 "RTL8139", sizeof(PCIRTL8139State),
3411 devfn,
3412 NULL, NULL);
3413 pci_conf = d->dev.config;
3414 pci_conf[0x00] = 0xec; /* Realtek 8139 */
3415 pci_conf[0x01] = 0x10;
3416 pci_conf[0x02] = 0x39;
3417 pci_conf[0x03] = 0x81;
3418 pci_conf[0x04] = 0x05; /* command = I/O space, Bus Master */
3419 pci_conf[0x08] = RTL8139_PCI_REVID; /* PCI revision ID; >=0x20 is for 8139C+ */
3420 pci_conf[0x0a] = 0x00; /* ethernet network controller */
3421 pci_conf[0x0b] = 0x02;
3422 pci_conf[0x0e] = 0x00; /* header_type */
3423 pci_conf[0x3d] = 1; /* interrupt pin 0 */
3424 pci_conf[0x34] = 0xdc;
3425
3426 s = &d->rtl8139;
3427
3428 /* I/O handler for memory-mapped I/O */
3429 s->rtl8139_mmio_io_addr =
3430 cpu_register_io_memory(0, rtl8139_mmio_read, rtl8139_mmio_write, s);
3431
3432 pci_register_io_region(&d->dev, 0, 0x100,
3433 PCI_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3434
3435 pci_register_io_region(&d->dev, 1, 0x100,
3436 PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map);
3437
3438 s->pci_dev = (PCIDevice *)d;
3439 memcpy(s->macaddr, nd->macaddr, 6);
3440 rtl8139_reset(s);
3441 s->vc = qemu_new_vlan_client(nd->vlan, rtl8139_receive,
3442 rtl8139_can_receive, s);
3443
3444 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
3445 "rtl8139 pci macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
3446 s->macaddr[0],
3447 s->macaddr[1],
3448 s->macaddr[2],
3449 s->macaddr[3],
3450 s->macaddr[4],
3451 s->macaddr[5]);
3452
3453 s->cplus_txbuffer = NULL;
3454 s->cplus_txbuffer_len = 0;
3455 s->cplus_txbuffer_offset = 0;
3456
3457 /* XXX: instance number ? */
3458 register_savevm("rtl8139", 0, 3, rtl8139_save, rtl8139_load, s);
3459
3460 #if RTL8139_ONBOARD_TIMER
3461 s->timer = qemu_new_timer(vm_clock, rtl8139_timer, s);
3462
3463 qemu_mod_timer(s->timer,
3464 rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock)));
3465 #endif /* RTL8139_ONBOARD_TIMER */
3466 }
3467
Samsung s3c2440 and arm920t support for the mini2440 dev board