?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
target-ppc: Add v{add,sub}fp instructions
[qemu/mini2440/sniper_sniper_test.git] / hw / rtl8139.c
blob59b0cc74aba4bcbfc2b117676140bb903af67fce
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 cplus_enabled;
476
477 uint32_t currCPlusRxDesc;
478 uint32_t currCPlusTxDesc;
479
480 uint32_t RxRingAddrLO;
481 uint32_t RxRingAddrHI;
482
483 EEprom9346 eeprom;
484
485 uint32_t TCTR;
486 uint32_t TimerInt;
487 int64_t TCTR_base;
488
489 /* Tally counters */
490 RTL8139TallyCounters tally_counters;
491
492 /* Non-persistent data */
493 uint8_t *cplus_txbuffer;
494 int cplus_txbuffer_len;
495 int cplus_txbuffer_offset;
496
497 /* PCI interrupt timer */
498 QEMUTimer *timer;
499
500 } RTL8139State;
501
502 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
503 {
504 DEBUG_PRINT(("RTL8139: eeprom command 0x%02x\n", command));
505
506 switch (command & Chip9346_op_mask)
507 {
508 case Chip9346_op_read:
509 {
510 eeprom->address = command & EEPROM_9346_ADDR_MASK;
511 eeprom->output = eeprom->contents[eeprom->address];
512 eeprom->eedo = 0;
513 eeprom->tick = 0;
514 eeprom->mode = Chip9346_data_read;
515 DEBUG_PRINT(("RTL8139: eeprom read from address 0x%02x data=0x%04x\n",
516 eeprom->address, eeprom->output));
517 }
518 break;
519
520 case Chip9346_op_write:
521 {
522 eeprom->address = command & EEPROM_9346_ADDR_MASK;
523 eeprom->input = 0;
524 eeprom->tick = 0;
525 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
526 DEBUG_PRINT(("RTL8139: eeprom begin write to address 0x%02x\n",
527 eeprom->address));
528 }
529 break;
530 default:
531 eeprom->mode = Chip9346_none;
532 switch (command & Chip9346_op_ext_mask)
533 {
534 case Chip9346_op_write_enable:
535 DEBUG_PRINT(("RTL8139: eeprom write enabled\n"));
536 break;
537 case Chip9346_op_write_all:
538 DEBUG_PRINT(("RTL8139: eeprom begin write all\n"));
539 break;
540 case Chip9346_op_write_disable:
541 DEBUG_PRINT(("RTL8139: eeprom write disabled\n"));
542 break;
543 }
544 break;
545 }
546 }
547
548 static void prom9346_shift_clock(EEprom9346 *eeprom)
549 {
550 int bit = eeprom->eedi?1:0;
551
552 ++ eeprom->tick;
553
554 DEBUG_PRINT(("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, eeprom->eedo));
555
556 switch (eeprom->mode)
557 {
558 case Chip9346_enter_command_mode:
559 if (bit)
560 {
561 eeprom->mode = Chip9346_read_command;
562 eeprom->tick = 0;
563 eeprom->input = 0;
564 DEBUG_PRINT(("eeprom: +++ synchronized, begin command read\n"));
565 }
566 break;
567
568 case Chip9346_read_command:
569 eeprom->input = (eeprom->input << 1) | (bit & 1);
570 if (eeprom->tick == 8)
571 {
572 prom9346_decode_command(eeprom, eeprom->input & 0xff);
573 }
574 break;
575
576 case Chip9346_data_read:
577 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
578 eeprom->output <<= 1;
579 if (eeprom->tick == 16)
580 {
581 #if 1
582 // the FreeBSD drivers (rl and re) don't explicitly toggle
583 // CS between reads (or does setting Cfg9346 to 0 count too?),
584 // so we need to enter wait-for-command state here
585 eeprom->mode = Chip9346_enter_command_mode;
586 eeprom->input = 0;
587 eeprom->tick = 0;
588
589 DEBUG_PRINT(("eeprom: +++ end of read, awaiting next command\n"));
590 #else
591 // original behaviour
592 ++eeprom->address;
593 eeprom->address &= EEPROM_9346_ADDR_MASK;
594 eeprom->output = eeprom->contents[eeprom->address];
595 eeprom->tick = 0;
596
597 DEBUG_PRINT(("eeprom: +++ read next address 0x%02x data=0x%04x\n",
598 eeprom->address, eeprom->output));
599 #endif
600 }
601 break;
602
603 case Chip9346_data_write:
604 eeprom->input = (eeprom->input << 1) | (bit & 1);
605 if (eeprom->tick == 16)
606 {
607 DEBUG_PRINT(("RTL8139: eeprom write to address 0x%02x data=0x%04x\n",
608 eeprom->address, eeprom->input));
609
610 eeprom->contents[eeprom->address] = eeprom->input;
611 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
612 eeprom->tick = 0;
613 eeprom->input = 0;
614 }
615 break;
616
617 case Chip9346_data_write_all:
618 eeprom->input = (eeprom->input << 1) | (bit & 1);
619 if (eeprom->tick == 16)
620 {
621 int i;
622 for (i = 0; i < EEPROM_9346_SIZE; i++)
623 {
624 eeprom->contents[i] = eeprom->input;
625 }
626 DEBUG_PRINT(("RTL8139: eeprom filled with data=0x%04x\n",
627 eeprom->input));
628
629 eeprom->mode = Chip9346_enter_command_mode;
630 eeprom->tick = 0;
631 eeprom->input = 0;
632 }
633 break;
634
635 default:
636 break;
637 }
638 }
639
640 static int prom9346_get_wire(RTL8139State *s)
641 {
642 EEprom9346 *eeprom = &s->eeprom;
643 if (!eeprom->eecs)
644 return 0;
645
646 return eeprom->eedo;
647 }
648
649 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
650 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
651 {
652 EEprom9346 *eeprom = &s->eeprom;
653 uint8_t old_eecs = eeprom->eecs;
654 uint8_t old_eesk = eeprom->eesk;
655
656 eeprom->eecs = eecs;
657 eeprom->eesk = eesk;
658 eeprom->eedi = eedi;
659
660 DEBUG_PRINT(("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n",
661 eeprom->eecs, eeprom->eesk, eeprom->eedi, eeprom->eedo));
662
663 if (!old_eecs && eecs)
664 {
665 /* Synchronize start */
666 eeprom->tick = 0;
667 eeprom->input = 0;
668 eeprom->output = 0;
669 eeprom->mode = Chip9346_enter_command_mode;
670
671 DEBUG_PRINT(("=== eeprom: begin access, enter command mode\n"));
672 }
673
674 if (!eecs)
675 {
676 DEBUG_PRINT(("=== eeprom: end access\n"));
677 return;
678 }
679
680 if (!old_eesk && eesk)
681 {
682 /* SK front rules */
683 prom9346_shift_clock(eeprom);
684 }
685 }
686
687 static void rtl8139_update_irq(RTL8139State *s)
688 {
689 int isr;
690 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
691
692 DEBUG_PRINT(("RTL8139: Set IRQ to %d (%04x %04x)\n",
693 isr ? 1 : 0, s->IntrStatus, s->IntrMask));
694
695 qemu_set_irq(s->pci_dev->irq[0], (isr != 0));
696 }
697
698 #define POLYNOMIAL 0x04c11db6
699
700 /* From FreeBSD */
701 /* XXX: optimize */
702 static int compute_mcast_idx(const uint8_t *ep)
703 {
704 uint32_t crc;
705 int carry, i, j;
706 uint8_t b;
707
708 crc = 0xffffffff;
709 for (i = 0; i < 6; i++) {
710 b = *ep++;
711 for (j = 0; j < 8; j++) {
712 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
713 crc <<= 1;
714 b >>= 1;
715 if (carry)
716 crc = ((crc ^ POLYNOMIAL) | carry);
717 }
718 }
719 return (crc >> 26);
720 }
721
722 static int rtl8139_RxWrap(RTL8139State *s)
723 {
724 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
725 return (s->RxConfig & (1 << 7));
726 }
727
728 static int rtl8139_receiver_enabled(RTL8139State *s)
729 {
730 return s->bChipCmdState & CmdRxEnb;
731 }
732
733 static int rtl8139_transmitter_enabled(RTL8139State *s)
734 {
735 return s->bChipCmdState & CmdTxEnb;
736 }
737
738 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
739 {
740 return s->CpCmd & CPlusRxEnb;
741 }
742
743 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
744 {
745 return s->CpCmd & CPlusTxEnb;
746 }
747
748 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
749 {
750 if (s->RxBufAddr + size > s->RxBufferSize)
751 {
752 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
753
754 /* write packet data */
755 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
756 {
757 DEBUG_PRINT((">>> RTL8139: rx packet wrapped in buffer at %d\n", size-wrapped));
758
759 if (size > wrapped)
760 {
761 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
762 buf, size-wrapped );
763 }
764
765 /* reset buffer pointer */
766 s->RxBufAddr = 0;
767
768 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
769 buf + (size-wrapped), wrapped );
770
771 s->RxBufAddr = wrapped;
772
773 return;
774 }
775 }
776
777 /* non-wrapping path or overwrapping enabled */
778 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
779
780 s->RxBufAddr += size;
781 }
782
783 #define MIN_BUF_SIZE 60
784 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
785 {
786 #if TARGET_PHYS_ADDR_BITS > 32
787 return low | ((target_phys_addr_t)high << 32);
788 #else
789 return low;
790 #endif
791 }
792
793 static int rtl8139_can_receive(void *opaque)
794 {
795 RTL8139State *s = opaque;
796 int avail;
797
798 /* Receive (drop) packets if card is disabled. */
799 if (!s->clock_enabled)
800 return 1;
801 if (!rtl8139_receiver_enabled(s))
802 return 1;
803
804 if (rtl8139_cp_receiver_enabled(s)) {
805 /* ??? Flow control not implemented in c+ mode.
806 This is a hack to work around slirp deficiencies anyway. */
807 return 1;
808 } else {
809 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
810 s->RxBufferSize);
811 return (avail == 0 || avail >= 1514);
812 }
813 }
814
815 static void rtl8139_do_receive(void *opaque, const uint8_t *buf, int size, int do_interrupt)
816 {
817 RTL8139State *s = opaque;
818
819 uint32_t packet_header = 0;
820
821 uint8_t buf1[60];
822 static const uint8_t broadcast_macaddr[6] =
823 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
824
825 DEBUG_PRINT((">>> RTL8139: received len=%d\n", size));
826
827 /* test if board clock is stopped */
828 if (!s->clock_enabled)
829 {
830 DEBUG_PRINT(("RTL8139: stopped ==========================\n"));
831 return;
832 }
833
834 /* first check if receiver is enabled */
835
836 if (!rtl8139_receiver_enabled(s))
837 {
838 DEBUG_PRINT(("RTL8139: receiver disabled ================\n"));
839 return;
840 }
841
842 /* XXX: check this */
843 if (s->RxConfig & AcceptAllPhys) {
844 /* promiscuous: receive all */
845 DEBUG_PRINT((">>> RTL8139: packet received in promiscuous mode\n"));
846
847 } else {
848 if (!memcmp(buf, broadcast_macaddr, 6)) {
849 /* broadcast address */
850 if (!(s->RxConfig & AcceptBroadcast))
851 {
852 DEBUG_PRINT((">>> RTL8139: broadcast packet rejected\n"));
853
854 /* update tally counter */
855 ++s->tally_counters.RxERR;
856
857 return;
858 }
859
860 packet_header |= RxBroadcast;
861
862 DEBUG_PRINT((">>> RTL8139: broadcast packet received\n"));
863
864 /* update tally counter */
865 ++s->tally_counters.RxOkBrd;
866
867 } else if (buf[0] & 0x01) {
868 /* multicast */
869 if (!(s->RxConfig & AcceptMulticast))
870 {
871 DEBUG_PRINT((">>> RTL8139: multicast packet rejected\n"));
872
873 /* update tally counter */
874 ++s->tally_counters.RxERR;
875
876 return;
877 }
878
879 int mcast_idx = compute_mcast_idx(buf);
880
881 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
882 {
883 DEBUG_PRINT((">>> RTL8139: multicast address mismatch\n"));
884
885 /* update tally counter */
886 ++s->tally_counters.RxERR;
887
888 return;
889 }
890
891 packet_header |= RxMulticast;
892
893 DEBUG_PRINT((">>> RTL8139: multicast packet received\n"));
894
895 /* update tally counter */
896 ++s->tally_counters.RxOkMul;
897
898 } else if (s->phys[0] == buf[0] &&
899 s->phys[1] == buf[1] &&
900 s->phys[2] == buf[2] &&
901 s->phys[3] == buf[3] &&
902 s->phys[4] == buf[4] &&
903 s->phys[5] == buf[5]) {
904 /* match */
905 if (!(s->RxConfig & AcceptMyPhys))
906 {
907 DEBUG_PRINT((">>> RTL8139: rejecting physical address matching packet\n"));
908
909 /* update tally counter */
910 ++s->tally_counters.RxERR;
911
912 return;
913 }
914
915 packet_header |= RxPhysical;
916
917 DEBUG_PRINT((">>> RTL8139: physical address matching packet received\n"));
918
919 /* update tally counter */
920 ++s->tally_counters.RxOkPhy;
921
922 } else {
923
924 DEBUG_PRINT((">>> RTL8139: unknown packet\n"));
925
926 /* update tally counter */
927 ++s->tally_counters.RxERR;
928
929 return;
930 }
931 }
932
933 /* if too small buffer, then expand it */
934 if (size < MIN_BUF_SIZE) {
935 memcpy(buf1, buf, size);
936 memset(buf1 + size, 0, MIN_BUF_SIZE - size);
937 buf = buf1;
938 size = MIN_BUF_SIZE;
939 }
940
941 if (rtl8139_cp_receiver_enabled(s))
942 {
943 DEBUG_PRINT(("RTL8139: in C+ Rx mode ================\n"));
944
945 /* begin C+ receiver mode */
946
947 /* w0 ownership flag */
948 #define CP_RX_OWN (1<<31)
949 /* w0 end of ring flag */
950 #define CP_RX_EOR (1<<30)
951 /* w0 bits 0...12 : buffer size */
952 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
953 /* w1 tag available flag */
954 #define CP_RX_TAVA (1<<16)
955 /* w1 bits 0...15 : VLAN tag */
956 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
957 /* w2 low 32bit of Rx buffer ptr */
958 /* w3 high 32bit of Rx buffer ptr */
959
960 int descriptor = s->currCPlusRxDesc;
961 target_phys_addr_t cplus_rx_ring_desc;
962
963 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
964 cplus_rx_ring_desc += 16 * descriptor;
965
966 DEBUG_PRINT(("RTL8139: +++ C+ mode reading RX descriptor %d from host memory at %08x %08x = %016" PRIx64 "\n",
967 descriptor, s->RxRingAddrHI, s->RxRingAddrLO, (uint64_t)cplus_rx_ring_desc));
968
969 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
970
971 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
972 rxdw0 = le32_to_cpu(val);
973 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
974 rxdw1 = le32_to_cpu(val);
975 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
976 rxbufLO = le32_to_cpu(val);
977 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
978 rxbufHI = le32_to_cpu(val);
979
980 DEBUG_PRINT(("RTL8139: +++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
981 descriptor,
982 rxdw0, rxdw1, rxbufLO, rxbufHI));
983
984 if (!(rxdw0 & CP_RX_OWN))
985 {
986 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d is owned by host\n", descriptor));
987
988 s->IntrStatus |= RxOverflow;
989 ++s->RxMissed;
990
991 /* update tally counter */
992 ++s->tally_counters.RxERR;
993 ++s->tally_counters.MissPkt;
994
995 rtl8139_update_irq(s);
996 return;
997 }
998
999 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1000
1001 /* TODO: scatter the packet over available receive ring descriptors space */
1002
1003 if (size+4 > rx_space)
1004 {
1005 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d size %d received %d + 4\n",
1006 descriptor, rx_space, size));
1007
1008 s->IntrStatus |= RxOverflow;
1009 ++s->RxMissed;
1010
1011 /* update tally counter */
1012 ++s->tally_counters.RxERR;
1013 ++s->tally_counters.MissPkt;
1014
1015 rtl8139_update_irq(s);
1016 return;
1017 }
1018
1019 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1020
1021 /* receive/copy to target memory */
1022 cpu_physical_memory_write( rx_addr, buf, size );
1023
1024 if (s->CpCmd & CPlusRxChkSum)
1025 {
1026 /* do some packet checksumming */
1027 }
1028
1029 /* write checksum */
1030 #if defined (RTL8139_CALCULATE_RXCRC)
1031 val = cpu_to_le32(crc32(0, buf, size));
1032 #else
1033 val = 0;
1034 #endif
1035 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1036
1037 /* first segment of received packet flag */
1038 #define CP_RX_STATUS_FS (1<<29)
1039 /* last segment of received packet flag */
1040 #define CP_RX_STATUS_LS (1<<28)
1041 /* multicast packet flag */
1042 #define CP_RX_STATUS_MAR (1<<26)
1043 /* physical-matching packet flag */
1044 #define CP_RX_STATUS_PAM (1<<25)
1045 /* broadcast packet flag */
1046 #define CP_RX_STATUS_BAR (1<<24)
1047 /* runt packet flag */
1048 #define CP_RX_STATUS_RUNT (1<<19)
1049 /* crc error flag */
1050 #define CP_RX_STATUS_CRC (1<<18)
1051 /* IP checksum error flag */
1052 #define CP_RX_STATUS_IPF (1<<15)
1053 /* UDP checksum error flag */
1054 #define CP_RX_STATUS_UDPF (1<<14)
1055 /* TCP checksum error flag */
1056 #define CP_RX_STATUS_TCPF (1<<13)
1057
1058 /* transfer ownership to target */
1059 rxdw0 &= ~CP_RX_OWN;
1060
1061 /* set first segment bit */
1062 rxdw0 |= CP_RX_STATUS_FS;
1063
1064 /* set last segment bit */
1065 rxdw0 |= CP_RX_STATUS_LS;
1066
1067 /* set received packet type flags */
1068 if (packet_header & RxBroadcast)
1069 rxdw0 |= CP_RX_STATUS_BAR;
1070 if (packet_header & RxMulticast)
1071 rxdw0 |= CP_RX_STATUS_MAR;
1072 if (packet_header & RxPhysical)
1073 rxdw0 |= CP_RX_STATUS_PAM;
1074
1075 /* set received size */
1076 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1077 rxdw0 |= (size+4);
1078
1079 /* reset VLAN tag flag */
1080 rxdw1 &= ~CP_RX_TAVA;
1081
1082 /* update ring data */
1083 val = cpu_to_le32(rxdw0);
1084 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1085 val = cpu_to_le32(rxdw1);
1086 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1087
1088 /* update tally counter */
1089 ++s->tally_counters.RxOk;
1090
1091 /* seek to next Rx descriptor */
1092 if (rxdw0 & CP_RX_EOR)
1093 {
1094 s->currCPlusRxDesc = 0;
1095 }
1096 else
1097 {
1098 ++s->currCPlusRxDesc;
1099 }
1100
1101 DEBUG_PRINT(("RTL8139: done C+ Rx mode ----------------\n"));
1102
1103 }
1104 else
1105 {
1106 DEBUG_PRINT(("RTL8139: in ring Rx mode ================\n"));
1107
1108 /* begin ring receiver mode */
1109 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1110
1111 /* if receiver buffer is empty then avail == 0 */
1112
1113 if (avail != 0 && size + 8 >= avail)
1114 {
1115 DEBUG_PRINT(("rx overflow: rx buffer length %d head 0x%04x read 0x%04x === available 0x%04x need 0x%04x\n",
1116 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8));
1117
1118 s->IntrStatus |= RxOverflow;
1119 ++s->RxMissed;
1120 rtl8139_update_irq(s);
1121 return;
1122 }
1123
1124 packet_header |= RxStatusOK;
1125
1126 packet_header |= (((size+4) << 16) & 0xffff0000);
1127
1128 /* write header */
1129 uint32_t val = cpu_to_le32(packet_header);
1130
1131 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1132
1133 rtl8139_write_buffer(s, buf, size);
1134
1135 /* write checksum */
1136 #if defined (RTL8139_CALCULATE_RXCRC)
1137 val = cpu_to_le32(crc32(0, buf, size));
1138 #else
1139 val = 0;
1140 #endif
1141
1142 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1143
1144 /* correct buffer write pointer */
1145 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1146
1147 /* now we can signal we have received something */
1148
1149 DEBUG_PRINT((" received: rx buffer length %d head 0x%04x read 0x%04x\n",
1150 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
1151 }
1152
1153 s->IntrStatus |= RxOK;
1154
1155 if (do_interrupt)
1156 {
1157 rtl8139_update_irq(s);
1158 }
1159 }
1160
1161 static void rtl8139_receive(void *opaque, const uint8_t *buf, int size)
1162 {
1163 rtl8139_do_receive(opaque, buf, size, 1);
1164 }
1165
1166 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1167 {
1168 s->RxBufferSize = bufferSize;
1169 s->RxBufPtr = 0;
1170 s->RxBufAddr = 0;
1171 }
1172
1173 static void rtl8139_reset(RTL8139State *s)
1174 {
1175 int i;
1176
1177 /* restore MAC address */
1178 memcpy(s->phys, s->macaddr, 6);
1179
1180 /* reset interrupt mask */
1181 s->IntrStatus = 0;
1182 s->IntrMask = 0;
1183
1184 rtl8139_update_irq(s);
1185
1186 /* prepare eeprom */
1187 s->eeprom.contents[0] = 0x8129;
1188 #if 1
1189 // PCI vendor and device ID should be mirrored here
1190 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
1191 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
1192 #endif
1193
1194 s->eeprom.contents[7] = s->macaddr[0] | s->macaddr[1] << 8;
1195 s->eeprom.contents[8] = s->macaddr[2] | s->macaddr[3] << 8;
1196 s->eeprom.contents[9] = s->macaddr[4] | s->macaddr[5] << 8;
1197
1198 /* mark all status registers as owned by host */
1199 for (i = 0; i < 4; ++i)
1200 {
1201 s->TxStatus[i] = TxHostOwns;
1202 }
1203
1204 s->currTxDesc = 0;
1205 s->currCPlusRxDesc = 0;
1206 s->currCPlusTxDesc = 0;
1207
1208 s->RxRingAddrLO = 0;
1209 s->RxRingAddrHI = 0;
1210
1211 s->RxBuf = 0;
1212
1213 rtl8139_reset_rxring(s, 8192);
1214
1215 /* ACK the reset */
1216 s->TxConfig = 0;
1217
1218 #if 0
1219 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1220 s->clock_enabled = 0;
1221 #else
1222 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1223 s->clock_enabled = 1;
1224 #endif
1225
1226 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1227
1228 /* set initial state data */
1229 s->Config0 = 0x0; /* No boot ROM */
1230 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1231 s->Config3 = 0x1; /* fast back-to-back compatible */
1232 s->Config5 = 0x0;
1233
1234 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1235
1236 s->CpCmd = 0x0; /* reset C+ mode */
1237 s->cplus_enabled = 0;
1238
1239
1240 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1241 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1242 s->BasicModeCtrl = 0x1000; // autonegotiation
1243
1244 s->BasicModeStatus = 0x7809;
1245 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1246 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1247 s->BasicModeStatus |= 0x0004; /* link is up */
1248
1249 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1250 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1251 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1252
1253 /* also reset timer and disable timer interrupt */
1254 s->TCTR = 0;
1255 s->TimerInt = 0;
1256 s->TCTR_base = 0;
1257
1258 /* reset tally counters */
1259 RTL8139TallyCounters_clear(&s->tally_counters);
1260 }
1261
1262 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1263 {
1264 counters->TxOk = 0;
1265 counters->RxOk = 0;
1266 counters->TxERR = 0;
1267 counters->RxERR = 0;
1268 counters->MissPkt = 0;
1269 counters->FAE = 0;
1270 counters->Tx1Col = 0;
1271 counters->TxMCol = 0;
1272 counters->RxOkPhy = 0;
1273 counters->RxOkBrd = 0;
1274 counters->RxOkMul = 0;
1275 counters->TxAbt = 0;
1276 counters->TxUndrn = 0;
1277 }
1278
1279 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1280 {
1281 uint16_t val16;
1282 uint32_t val32;
1283 uint64_t val64;
1284
1285 val64 = cpu_to_le64(tally_counters->TxOk);
1286 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1287
1288 val64 = cpu_to_le64(tally_counters->RxOk);
1289 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1290
1291 val64 = cpu_to_le64(tally_counters->TxERR);
1292 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1293
1294 val32 = cpu_to_le32(tally_counters->RxERR);
1295 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1296
1297 val16 = cpu_to_le16(tally_counters->MissPkt);
1298 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1299
1300 val16 = cpu_to_le16(tally_counters->FAE);
1301 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1302
1303 val32 = cpu_to_le32(tally_counters->Tx1Col);
1304 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1305
1306 val32 = cpu_to_le32(tally_counters->TxMCol);
1307 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1308
1309 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1310 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1311
1312 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1313 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1314
1315 val32 = cpu_to_le32(tally_counters->RxOkMul);
1316 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1317
1318 val16 = cpu_to_le16(tally_counters->TxAbt);
1319 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1320
1321 val16 = cpu_to_le16(tally_counters->TxUndrn);
1322 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1323 }
1324
1325 /* Loads values of tally counters from VM state file */
1326 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1327 {
1328 qemu_get_be64s(f, &tally_counters->TxOk);
1329 qemu_get_be64s(f, &tally_counters->RxOk);
1330 qemu_get_be64s(f, &tally_counters->TxERR);
1331 qemu_get_be32s(f, &tally_counters->RxERR);
1332 qemu_get_be16s(f, &tally_counters->MissPkt);
1333 qemu_get_be16s(f, &tally_counters->FAE);
1334 qemu_get_be32s(f, &tally_counters->Tx1Col);
1335 qemu_get_be32s(f, &tally_counters->TxMCol);
1336 qemu_get_be64s(f, &tally_counters->RxOkPhy);
1337 qemu_get_be64s(f, &tally_counters->RxOkBrd);
1338 qemu_get_be32s(f, &tally_counters->RxOkMul);
1339 qemu_get_be16s(f, &tally_counters->TxAbt);
1340 qemu_get_be16s(f, &tally_counters->TxUndrn);
1341 }
1342
1343 /* Saves values of tally counters to VM state file */
1344 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1345 {
1346 qemu_put_be64s(f, &tally_counters->TxOk);
1347 qemu_put_be64s(f, &tally_counters->RxOk);
1348 qemu_put_be64s(f, &tally_counters->TxERR);
1349 qemu_put_be32s(f, &tally_counters->RxERR);
1350 qemu_put_be16s(f, &tally_counters->MissPkt);
1351 qemu_put_be16s(f, &tally_counters->FAE);
1352 qemu_put_be32s(f, &tally_counters->Tx1Col);
1353 qemu_put_be32s(f, &tally_counters->TxMCol);
1354 qemu_put_be64s(f, &tally_counters->RxOkPhy);
1355 qemu_put_be64s(f, &tally_counters->RxOkBrd);
1356 qemu_put_be32s(f, &tally_counters->RxOkMul);
1357 qemu_put_be16s(f, &tally_counters->TxAbt);
1358 qemu_put_be16s(f, &tally_counters->TxUndrn);
1359 }
1360
1361 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1362 {
1363 val &= 0xff;
1364
1365 DEBUG_PRINT(("RTL8139: ChipCmd write val=0x%08x\n", val));
1366
1367 if (val & CmdReset)
1368 {
1369 DEBUG_PRINT(("RTL8139: ChipCmd reset\n"));
1370 rtl8139_reset(s);
1371 }
1372 if (val & CmdRxEnb)
1373 {
1374 DEBUG_PRINT(("RTL8139: ChipCmd enable receiver\n"));
1375
1376 s->currCPlusRxDesc = 0;
1377 }
1378 if (val & CmdTxEnb)
1379 {
1380 DEBUG_PRINT(("RTL8139: ChipCmd enable transmitter\n"));
1381
1382 s->currCPlusTxDesc = 0;
1383 }
1384
1385 /* mask unwriteable bits */
1386 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1387
1388 /* Deassert reset pin before next read */
1389 val &= ~CmdReset;
1390
1391 s->bChipCmdState = val;
1392 }
1393
1394 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1395 {
1396 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1397
1398 if (unread != 0)
1399 {
1400 DEBUG_PRINT(("RTL8139: receiver buffer data available 0x%04x\n", unread));
1401 return 0;
1402 }
1403
1404 DEBUG_PRINT(("RTL8139: receiver buffer is empty\n"));
1405
1406 return 1;
1407 }
1408
1409 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1410 {
1411 uint32_t ret = s->bChipCmdState;
1412
1413 if (rtl8139_RxBufferEmpty(s))
1414 ret |= RxBufEmpty;
1415
1416 DEBUG_PRINT(("RTL8139: ChipCmd read val=0x%04x\n", ret));
1417
1418 return ret;
1419 }
1420
1421 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1422 {
1423 val &= 0xffff;
1424
1425 DEBUG_PRINT(("RTL8139C+ command register write(w) val=0x%04x\n", val));
1426
1427 s->cplus_enabled = 1;
1428
1429 /* mask unwriteable bits */
1430 val = SET_MASKED(val, 0xff84, s->CpCmd);
1431
1432 s->CpCmd = val;
1433 }
1434
1435 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1436 {
1437 uint32_t ret = s->CpCmd;
1438
1439 DEBUG_PRINT(("RTL8139C+ command register read(w) val=0x%04x\n", ret));
1440
1441 return ret;
1442 }
1443
1444 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1445 {
1446 DEBUG_PRINT(("RTL8139C+ IntrMitigate register write(w) val=0x%04x\n", val));
1447 }
1448
1449 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1450 {
1451 uint32_t ret = 0;
1452
1453 DEBUG_PRINT(("RTL8139C+ IntrMitigate register read(w) val=0x%04x\n", ret));
1454
1455 return ret;
1456 }
1457
1458 static int rtl8139_config_writeable(RTL8139State *s)
1459 {
1460 if (s->Cfg9346 & Cfg9346_Unlock)
1461 {
1462 return 1;
1463 }
1464
1465 DEBUG_PRINT(("RTL8139: Configuration registers are write-protected\n"));
1466
1467 return 0;
1468 }
1469
1470 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1471 {
1472 val &= 0xffff;
1473
1474 DEBUG_PRINT(("RTL8139: BasicModeCtrl register write(w) val=0x%04x\n", val));
1475
1476 /* mask unwriteable bits */
1477 uint32_t mask = 0x4cff;
1478
1479 if (1 || !rtl8139_config_writeable(s))
1480 {
1481 /* Speed setting and autonegotiation enable bits are read-only */
1482 mask |= 0x3000;
1483 /* Duplex mode setting is read-only */
1484 mask |= 0x0100;
1485 }
1486
1487 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1488
1489 s->BasicModeCtrl = val;
1490 }
1491
1492 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1493 {
1494 uint32_t ret = s->BasicModeCtrl;
1495
1496 DEBUG_PRINT(("RTL8139: BasicModeCtrl register read(w) val=0x%04x\n", ret));
1497
1498 return ret;
1499 }
1500
1501 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1502 {
1503 val &= 0xffff;
1504
1505 DEBUG_PRINT(("RTL8139: BasicModeStatus register write(w) val=0x%04x\n", val));
1506
1507 /* mask unwriteable bits */
1508 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1509
1510 s->BasicModeStatus = val;
1511 }
1512
1513 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1514 {
1515 uint32_t ret = s->BasicModeStatus;
1516
1517 DEBUG_PRINT(("RTL8139: BasicModeStatus register read(w) val=0x%04x\n", ret));
1518
1519 return ret;
1520 }
1521
1522 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1523 {
1524 val &= 0xff;
1525
1526 DEBUG_PRINT(("RTL8139: Cfg9346 write val=0x%02x\n", val));
1527
1528 /* mask unwriteable bits */
1529 val = SET_MASKED(val, 0x31, s->Cfg9346);
1530
1531 uint32_t opmode = val & 0xc0;
1532 uint32_t eeprom_val = val & 0xf;
1533
1534 if (opmode == 0x80) {
1535 /* eeprom access */
1536 int eecs = (eeprom_val & 0x08)?1:0;
1537 int eesk = (eeprom_val & 0x04)?1:0;
1538 int eedi = (eeprom_val & 0x02)?1:0;
1539 prom9346_set_wire(s, eecs, eesk, eedi);
1540 } else if (opmode == 0x40) {
1541 /* Reset. */
1542 val = 0;
1543 rtl8139_reset(s);
1544 }
1545
1546 s->Cfg9346 = val;
1547 }
1548
1549 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1550 {
1551 uint32_t ret = s->Cfg9346;
1552
1553 uint32_t opmode = ret & 0xc0;
1554
1555 if (opmode == 0x80)
1556 {
1557 /* eeprom access */
1558 int eedo = prom9346_get_wire(s);
1559 if (eedo)
1560 {
1561 ret |= 0x01;
1562 }
1563 else
1564 {
1565 ret &= ~0x01;
1566 }
1567 }
1568
1569 DEBUG_PRINT(("RTL8139: Cfg9346 read val=0x%02x\n", ret));
1570
1571 return ret;
1572 }
1573
1574 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1575 {
1576 val &= 0xff;
1577
1578 DEBUG_PRINT(("RTL8139: Config0 write val=0x%02x\n", val));
1579
1580 if (!rtl8139_config_writeable(s))
1581 return;
1582
1583 /* mask unwriteable bits */
1584 val = SET_MASKED(val, 0xf8, s->Config0);
1585
1586 s->Config0 = val;
1587 }
1588
1589 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1590 {
1591 uint32_t ret = s->Config0;
1592
1593 DEBUG_PRINT(("RTL8139: Config0 read val=0x%02x\n", ret));
1594
1595 return ret;
1596 }
1597
1598 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1599 {
1600 val &= 0xff;
1601
1602 DEBUG_PRINT(("RTL8139: Config1 write val=0x%02x\n", val));
1603
1604 if (!rtl8139_config_writeable(s))
1605 return;
1606
1607 /* mask unwriteable bits */
1608 val = SET_MASKED(val, 0xC, s->Config1);
1609
1610 s->Config1 = val;
1611 }
1612
1613 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1614 {
1615 uint32_t ret = s->Config1;
1616
1617 DEBUG_PRINT(("RTL8139: Config1 read val=0x%02x\n", ret));
1618
1619 return ret;
1620 }
1621
1622 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1623 {
1624 val &= 0xff;
1625
1626 DEBUG_PRINT(("RTL8139: Config3 write val=0x%02x\n", val));
1627
1628 if (!rtl8139_config_writeable(s))
1629 return;
1630
1631 /* mask unwriteable bits */
1632 val = SET_MASKED(val, 0x8F, s->Config3);
1633
1634 s->Config3 = val;
1635 }
1636
1637 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1638 {
1639 uint32_t ret = s->Config3;
1640
1641 DEBUG_PRINT(("RTL8139: Config3 read val=0x%02x\n", ret));
1642
1643 return ret;
1644 }
1645
1646 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1647 {
1648 val &= 0xff;
1649
1650 DEBUG_PRINT(("RTL8139: Config4 write val=0x%02x\n", val));
1651
1652 if (!rtl8139_config_writeable(s))
1653 return;
1654
1655 /* mask unwriteable bits */
1656 val = SET_MASKED(val, 0x0a, s->Config4);
1657
1658 s->Config4 = val;
1659 }
1660
1661 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1662 {
1663 uint32_t ret = s->Config4;
1664
1665 DEBUG_PRINT(("RTL8139: Config4 read val=0x%02x\n", ret));
1666
1667 return ret;
1668 }
1669
1670 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1671 {
1672 val &= 0xff;
1673
1674 DEBUG_PRINT(("RTL8139: Config5 write val=0x%02x\n", val));
1675
1676 /* mask unwriteable bits */
1677 val = SET_MASKED(val, 0x80, s->Config5);
1678
1679 s->Config5 = val;
1680 }
1681
1682 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1683 {
1684 uint32_t ret = s->Config5;
1685
1686 DEBUG_PRINT(("RTL8139: Config5 read val=0x%02x\n", ret));
1687
1688 return ret;
1689 }
1690
1691 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1692 {
1693 if (!rtl8139_transmitter_enabled(s))
1694 {
1695 DEBUG_PRINT(("RTL8139: transmitter disabled; no TxConfig write val=0x%08x\n", val));
1696 return;
1697 }
1698
1699 DEBUG_PRINT(("RTL8139: TxConfig write val=0x%08x\n", val));
1700
1701 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1702
1703 s->TxConfig = val;
1704 }
1705
1706 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1707 {
1708 DEBUG_PRINT(("RTL8139C TxConfig via write(b) val=0x%02x\n", val));
1709
1710 uint32_t tc = s->TxConfig;
1711 tc &= 0xFFFFFF00;
1712 tc |= (val & 0x000000FF);
1713 rtl8139_TxConfig_write(s, tc);
1714 }
1715
1716 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1717 {
1718 uint32_t ret = s->TxConfig;
1719
1720 DEBUG_PRINT(("RTL8139: TxConfig read val=0x%04x\n", ret));
1721
1722 return ret;
1723 }
1724
1725 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1726 {
1727 DEBUG_PRINT(("RTL8139: RxConfig write val=0x%08x\n", val));
1728
1729 /* mask unwriteable bits */
1730 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1731
1732 s->RxConfig = val;
1733
1734 /* reset buffer size and read/write pointers */
1735 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1736
1737 DEBUG_PRINT(("RTL8139: RxConfig write reset buffer size to %d\n", s->RxBufferSize));
1738 }
1739
1740 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1741 {
1742 uint32_t ret = s->RxConfig;
1743
1744 DEBUG_PRINT(("RTL8139: RxConfig read val=0x%08x\n", ret));
1745
1746 return ret;
1747 }
1748
1749 static void rtl8139_transfer_frame(RTL8139State *s, const uint8_t *buf, int size, int do_interrupt)
1750 {
1751 if (!size)
1752 {
1753 DEBUG_PRINT(("RTL8139: +++ empty ethernet frame\n"));
1754 return;
1755 }
1756
1757 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1758 {
1759 DEBUG_PRINT(("RTL8139: +++ transmit loopback mode\n"));
1760 rtl8139_do_receive(s, buf, size, do_interrupt);
1761 }
1762 else
1763 {
1764 qemu_send_packet(s->vc, buf, size);
1765 }
1766 }
1767
1768 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1769 {
1770 if (!rtl8139_transmitter_enabled(s))
1771 {
1772 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: transmitter disabled\n",
1773 descriptor));
1774 return 0;
1775 }
1776
1777 if (s->TxStatus[descriptor] & TxHostOwns)
1778 {
1779 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: owned by host (%08x)\n",
1780 descriptor, s->TxStatus[descriptor]));
1781 return 0;
1782 }
1783
1784 DEBUG_PRINT(("RTL8139: +++ transmitting from descriptor %d\n", descriptor));
1785
1786 int txsize = s->TxStatus[descriptor] & 0x1fff;
1787 uint8_t txbuffer[0x2000];
1788
1789 DEBUG_PRINT(("RTL8139: +++ transmit reading %d bytes from host memory at 0x%08x\n",
1790 txsize, s->TxAddr[descriptor]));
1791
1792 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1793
1794 /* Mark descriptor as transferred */
1795 s->TxStatus[descriptor] |= TxHostOwns;
1796 s->TxStatus[descriptor] |= TxStatOK;
1797
1798 rtl8139_transfer_frame(s, txbuffer, txsize, 0);
1799
1800 DEBUG_PRINT(("RTL8139: +++ transmitted %d bytes from descriptor %d\n", txsize, descriptor));
1801
1802 /* update interrupt */
1803 s->IntrStatus |= TxOK;
1804 rtl8139_update_irq(s);
1805
1806 return 1;
1807 }
1808
1809 /* structures and macros for task offloading */
1810 typedef struct ip_header
1811 {
1812 uint8_t ip_ver_len; /* version and header length */
1813 uint8_t ip_tos; /* type of service */
1814 uint16_t ip_len; /* total length */
1815 uint16_t ip_id; /* identification */
1816 uint16_t ip_off; /* fragment offset field */
1817 uint8_t ip_ttl; /* time to live */
1818 uint8_t ip_p; /* protocol */
1819 uint16_t ip_sum; /* checksum */
1820 uint32_t ip_src,ip_dst; /* source and dest address */
1821 } ip_header;
1822
1823 #define IP_HEADER_VERSION_4 4
1824 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1825 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1826
1827 typedef struct tcp_header
1828 {
1829 uint16_t th_sport; /* source port */
1830 uint16_t th_dport; /* destination port */
1831 uint32_t th_seq; /* sequence number */
1832 uint32_t th_ack; /* acknowledgement number */
1833 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1834 uint16_t th_win; /* window */
1835 uint16_t th_sum; /* checksum */
1836 uint16_t th_urp; /* urgent pointer */
1837 } tcp_header;
1838
1839 typedef struct udp_header
1840 {
1841 uint16_t uh_sport; /* source port */
1842 uint16_t uh_dport; /* destination port */
1843 uint16_t uh_ulen; /* udp length */
1844 uint16_t uh_sum; /* udp checksum */
1845 } udp_header;
1846
1847 typedef struct ip_pseudo_header
1848 {
1849 uint32_t ip_src;
1850 uint32_t ip_dst;
1851 uint8_t zeros;
1852 uint8_t ip_proto;
1853 uint16_t ip_payload;
1854 } ip_pseudo_header;
1855
1856 #define IP_PROTO_TCP 6
1857 #define IP_PROTO_UDP 17
1858
1859 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1860 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1861 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1862
1863 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1864
1865 #define TCP_FLAG_FIN 0x01
1866 #define TCP_FLAG_PUSH 0x08
1867
1868 /* produces ones' complement sum of data */
1869 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1870 {
1871 uint32_t result = 0;
1872
1873 for (; len > 1; data+=2, len-=2)
1874 {
1875 result += *(uint16_t*)data;
1876 }
1877
1878 /* add the remainder byte */
1879 if (len)
1880 {
1881 uint8_t odd[2] = {*data, 0};
1882 result += *(uint16_t*)odd;
1883 }
1884
1885 while (result>>16)
1886 result = (result & 0xffff) + (result >> 16);
1887
1888 return result;
1889 }
1890
1891 static uint16_t ip_checksum(void *data, size_t len)
1892 {
1893 return ~ones_complement_sum((uint8_t*)data, len);
1894 }
1895
1896 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1897 {
1898 if (!rtl8139_transmitter_enabled(s))
1899 {
1900 DEBUG_PRINT(("RTL8139: +++ C+ mode: transmitter disabled\n"));
1901 return 0;
1902 }
1903
1904 if (!rtl8139_cp_transmitter_enabled(s))
1905 {
1906 DEBUG_PRINT(("RTL8139: +++ C+ mode: C+ transmitter disabled\n"));
1907 return 0 ;
1908 }
1909
1910 int descriptor = s->currCPlusTxDesc;
1911
1912 target_phys_addr_t cplus_tx_ring_desc =
1913 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1914
1915 /* Normal priority ring */
1916 cplus_tx_ring_desc += 16 * descriptor;
1917
1918 DEBUG_PRINT(("RTL8139: +++ C+ mode reading TX descriptor %d from host memory at %08x0x%08x = 0x%8lx\n",
1919 descriptor, s->TxAddr[1], s->TxAddr[0], cplus_tx_ring_desc));
1920
1921 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1922
1923 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1924 txdw0 = le32_to_cpu(val);
1925 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1926 txdw1 = le32_to_cpu(val);
1927 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1928 txbufLO = le32_to_cpu(val);
1929 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1930 txbufHI = le32_to_cpu(val);
1931
1932 DEBUG_PRINT(("RTL8139: +++ C+ mode TX descriptor %d %08x %08x %08x %08x\n",
1933 descriptor,
1934 txdw0, txdw1, txbufLO, txbufHI));
1935
1936 /* w0 ownership flag */
1937 #define CP_TX_OWN (1<<31)
1938 /* w0 end of ring flag */
1939 #define CP_TX_EOR (1<<30)
1940 /* first segment of received packet flag */
1941 #define CP_TX_FS (1<<29)
1942 /* last segment of received packet flag */
1943 #define CP_TX_LS (1<<28)
1944 /* large send packet flag */
1945 #define CP_TX_LGSEN (1<<27)
1946 /* large send MSS mask, bits 16...25 */
1947 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1948
1949 /* IP checksum offload flag */
1950 #define CP_TX_IPCS (1<<18)
1951 /* UDP checksum offload flag */
1952 #define CP_TX_UDPCS (1<<17)
1953 /* TCP checksum offload flag */
1954 #define CP_TX_TCPCS (1<<16)
1955
1956 /* w0 bits 0...15 : buffer size */
1957 #define CP_TX_BUFFER_SIZE (1<<16)
1958 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
1959 /* w1 tag available flag */
1960 #define CP_RX_TAGC (1<<17)
1961 /* w1 bits 0...15 : VLAN tag */
1962 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
1963 /* w2 low 32bit of Rx buffer ptr */
1964 /* w3 high 32bit of Rx buffer ptr */
1965
1966 /* set after transmission */
1967 /* FIFO underrun flag */
1968 #define CP_TX_STATUS_UNF (1<<25)
1969 /* transmit error summary flag, valid if set any of three below */
1970 #define CP_TX_STATUS_TES (1<<23)
1971 /* out-of-window collision flag */
1972 #define CP_TX_STATUS_OWC (1<<22)
1973 /* link failure flag */
1974 #define CP_TX_STATUS_LNKF (1<<21)
1975 /* excessive collisions flag */
1976 #define CP_TX_STATUS_EXC (1<<20)
1977
1978 if (!(txdw0 & CP_TX_OWN))
1979 {
1980 DEBUG_PRINT(("RTL8139: C+ Tx mode : descriptor %d is owned by host\n", descriptor));
1981 return 0 ;
1982 }
1983
1984 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : transmitting from descriptor %d\n", descriptor));
1985
1986 if (txdw0 & CP_TX_FS)
1987 {
1988 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is first segment descriptor\n", descriptor));
1989
1990 /* reset internal buffer offset */
1991 s->cplus_txbuffer_offset = 0;
1992 }
1993
1994 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
1995 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
1996
1997 /* make sure we have enough space to assemble the packet */
1998 if (!s->cplus_txbuffer)
1999 {
2000 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2001 s->cplus_txbuffer = malloc(s->cplus_txbuffer_len);
2002 s->cplus_txbuffer_offset = 0;
2003
2004 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer allocated space %d\n", s->cplus_txbuffer_len));
2005 }
2006
2007 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2008 {
2009 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2010 s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2011
2012 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer space changed to %d\n", s->cplus_txbuffer_len));
2013 }
2014
2015 if (!s->cplus_txbuffer)
2016 {
2017 /* out of memory */
2018
2019 DEBUG_PRINT(("RTL8139: +++ C+ mode transmiter failed to reallocate %d bytes\n", s->cplus_txbuffer_len));
2020
2021 /* update tally counter */
2022 ++s->tally_counters.TxERR;
2023 ++s->tally_counters.TxAbt;
2024
2025 return 0;
2026 }
2027
2028 /* append more data to the packet */
2029
2030 DEBUG_PRINT(("RTL8139: +++ C+ mode transmit reading %d bytes from host memory at %016" PRIx64 " to offset %d\n",
2031 txsize, (uint64_t)tx_addr, s->cplus_txbuffer_offset));
2032
2033 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2034 s->cplus_txbuffer_offset += txsize;
2035
2036 /* seek to next Rx descriptor */
2037 if (txdw0 & CP_TX_EOR)
2038 {
2039 s->currCPlusTxDesc = 0;
2040 }
2041 else
2042 {
2043 ++s->currCPlusTxDesc;
2044 if (s->currCPlusTxDesc >= 64)
2045 s->currCPlusTxDesc = 0;
2046 }
2047
2048 /* transfer ownership to target */
2049 txdw0 &= ~CP_RX_OWN;
2050
2051 /* reset error indicator bits */
2052 txdw0 &= ~CP_TX_STATUS_UNF;
2053 txdw0 &= ~CP_TX_STATUS_TES;
2054 txdw0 &= ~CP_TX_STATUS_OWC;
2055 txdw0 &= ~CP_TX_STATUS_LNKF;
2056 txdw0 &= ~CP_TX_STATUS_EXC;
2057
2058 /* update ring data */
2059 val = cpu_to_le32(txdw0);
2060 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2061 // val = cpu_to_le32(txdw1);
2062 // cpu_physical_memory_write(cplus_tx_ring_desc+4, &val, 4);
2063
2064 /* Now decide if descriptor being processed is holding the last segment of packet */
2065 if (txdw0 & CP_TX_LS)
2066 {
2067 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is last segment descriptor\n", descriptor));
2068
2069 /* can transfer fully assembled packet */
2070
2071 uint8_t *saved_buffer = s->cplus_txbuffer;
2072 int saved_size = s->cplus_txbuffer_offset;
2073 int saved_buffer_len = s->cplus_txbuffer_len;
2074
2075 /* reset the card space to protect from recursive call */
2076 s->cplus_txbuffer = NULL;
2077 s->cplus_txbuffer_offset = 0;
2078 s->cplus_txbuffer_len = 0;
2079
2080 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2081 {
2082 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task checksum\n"));
2083
2084 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
2085 #define ETH_HLEN 14
2086 #define ETH_MTU 1500
2087
2088 /* ip packet header */
2089 ip_header *ip = 0;
2090 int hlen = 0;
2091 uint8_t ip_protocol = 0;
2092 uint16_t ip_data_len = 0;
2093
2094 uint8_t *eth_payload_data = 0;
2095 size_t eth_payload_len = 0;
2096
2097 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2098 if (proto == ETH_P_IP)
2099 {
2100 DEBUG_PRINT(("RTL8139: +++ C+ mode has IP packet\n"));
2101
2102 /* not aligned */
2103 eth_payload_data = saved_buffer + ETH_HLEN;
2104 eth_payload_len = saved_size - ETH_HLEN;
2105
2106 ip = (ip_header*)eth_payload_data;
2107
2108 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2109 DEBUG_PRINT(("RTL8139: +++ C+ mode packet has bad IP version %d expected %d\n", IP_HEADER_VERSION(ip), IP_HEADER_VERSION_4));
2110 ip = NULL;
2111 } else {
2112 hlen = IP_HEADER_LENGTH(ip);
2113 ip_protocol = ip->ip_p;
2114 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2115 }
2116 }
2117
2118 if (ip)
2119 {
2120 if (txdw0 & CP_TX_IPCS)
2121 {
2122 DEBUG_PRINT(("RTL8139: +++ C+ mode need IP checksum\n"));
2123
2124 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2125 /* bad packet header len */
2126 /* or packet too short */
2127 }
2128 else
2129 {
2130 ip->ip_sum = 0;
2131 ip->ip_sum = ip_checksum(ip, hlen);
2132 DEBUG_PRINT(("RTL8139: +++ C+ mode IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2133 }
2134 }
2135
2136 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2137 {
2138 #if defined (DEBUG_RTL8139)
2139 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2140 #endif
2141 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task TSO MTU=%d IP data %d frame data %d specified MSS=%d\n",
2142 ETH_MTU, ip_data_len, saved_size - ETH_HLEN, large_send_mss));
2143
2144 int tcp_send_offset = 0;
2145 int send_count = 0;
2146
2147 /* maximum IP header length is 60 bytes */
2148 uint8_t saved_ip_header[60];
2149
2150 /* save IP header template; data area is used in tcp checksum calculation */
2151 memcpy(saved_ip_header, eth_payload_data, hlen);
2152
2153 /* a placeholder for checksum calculation routine in tcp case */
2154 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2155 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2156
2157 /* pointer to TCP header */
2158 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2159
2160 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2161
2162 /* ETH_MTU = ip header len + tcp header len + payload */
2163 int tcp_data_len = ip_data_len - tcp_hlen;
2164 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2165
2166 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP data len %d TCP hlen %d TCP data len %d TCP chunk size %d\n",
2167 ip_data_len, tcp_hlen, tcp_data_len, tcp_chunk_size));
2168
2169 /* note the cycle below overwrites IP header data,
2170 but restores it from saved_ip_header before sending packet */
2171
2172 int is_last_frame = 0;
2173
2174 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2175 {
2176 uint16_t chunk_size = tcp_chunk_size;
2177
2178 /* check if this is the last frame */
2179 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2180 {
2181 is_last_frame = 1;
2182 chunk_size = tcp_data_len - tcp_send_offset;
2183 }
2184
2185 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP seqno %08x\n", be32_to_cpu(p_tcp_hdr->th_seq)));
2186
2187 /* add 4 TCP pseudoheader fields */
2188 /* copy IP source and destination fields */
2189 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2190
2191 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO calculating TCP checksum for packet with %d bytes data\n", tcp_hlen + chunk_size));
2192
2193 if (tcp_send_offset)
2194 {
2195 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2196 }
2197
2198 /* keep PUSH and FIN flags only for the last frame */
2199 if (!is_last_frame)
2200 {
2201 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2202 }
2203
2204 /* recalculate TCP checksum */
2205 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2206 p_tcpip_hdr->zeros = 0;
2207 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2208 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2209
2210 p_tcp_hdr->th_sum = 0;
2211
2212 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2213 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP checksum %04x\n", tcp_checksum));
2214
2215 p_tcp_hdr->th_sum = tcp_checksum;
2216
2217 /* restore IP header */
2218 memcpy(eth_payload_data, saved_ip_header, hlen);
2219
2220 /* set IP data length and recalculate IP checksum */
2221 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2222
2223 /* increment IP id for subsequent frames */
2224 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2225
2226 ip->ip_sum = 0;
2227 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2228 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2229
2230 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2231 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO transferring packet size %d\n", tso_send_size));
2232 rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 0);
2233
2234 /* add transferred count to TCP sequence number */
2235 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2236 ++send_count;
2237 }
2238
2239 /* Stop sending this frame */
2240 saved_size = 0;
2241 }
2242 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2243 {
2244 DEBUG_PRINT(("RTL8139: +++ C+ mode need TCP or UDP checksum\n"));
2245
2246 /* maximum IP header length is 60 bytes */
2247 uint8_t saved_ip_header[60];
2248 memcpy(saved_ip_header, eth_payload_data, hlen);
2249
2250 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2251 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2252
2253 /* add 4 TCP pseudoheader fields */
2254 /* copy IP source and destination fields */
2255 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2256
2257 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2258 {
2259 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating TCP checksum for packet with %d bytes data\n", ip_data_len));
2260
2261 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2262 p_tcpip_hdr->zeros = 0;
2263 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2264 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2265
2266 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2267
2268 p_tcp_hdr->th_sum = 0;
2269
2270 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2271 DEBUG_PRINT(("RTL8139: +++ C+ mode TCP checksum %04x\n", tcp_checksum));
2272
2273 p_tcp_hdr->th_sum = tcp_checksum;
2274 }
2275 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2276 {
2277 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating UDP checksum for packet with %d bytes data\n", ip_data_len));
2278
2279 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2280 p_udpip_hdr->zeros = 0;
2281 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2282 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2283
2284 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2285
2286 p_udp_hdr->uh_sum = 0;
2287
2288 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2289 DEBUG_PRINT(("RTL8139: +++ C+ mode UDP checksum %04x\n", udp_checksum));
2290
2291 p_udp_hdr->uh_sum = udp_checksum;
2292 }
2293
2294 /* restore IP header */
2295 memcpy(eth_payload_data, saved_ip_header, hlen);
2296 }
2297 }
2298 }
2299
2300 /* update tally counter */
2301 ++s->tally_counters.TxOk;
2302
2303 DEBUG_PRINT(("RTL8139: +++ C+ mode transmitting %d bytes packet\n", saved_size));
2304
2305 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1);
2306
2307 /* restore card space if there was no recursion and reset offset */
2308 if (!s->cplus_txbuffer)
2309 {
2310 s->cplus_txbuffer = saved_buffer;
2311 s->cplus_txbuffer_len = saved_buffer_len;
2312 s->cplus_txbuffer_offset = 0;
2313 }
2314 else
2315 {
2316 free(saved_buffer);
2317 }
2318 }
2319 else
2320 {
2321 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission continue to next descriptor\n"));
2322 }
2323
2324 return 1;
2325 }
2326
2327 static void rtl8139_cplus_transmit(RTL8139State *s)
2328 {
2329 int txcount = 0;
2330
2331 while (rtl8139_cplus_transmit_one(s))
2332 {
2333 ++txcount;
2334 }
2335
2336 /* Mark transfer completed */
2337 if (!txcount)
2338 {
2339 DEBUG_PRINT(("RTL8139: C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2340 s->currCPlusTxDesc));
2341 }
2342 else
2343 {
2344 /* update interrupt status */
2345 s->IntrStatus |= TxOK;
2346 rtl8139_update_irq(s);
2347 }
2348 }
2349
2350 static void rtl8139_transmit(RTL8139State *s)
2351 {
2352 int descriptor = s->currTxDesc, txcount = 0;
2353
2354 /*while*/
2355 if (rtl8139_transmit_one(s, descriptor))
2356 {
2357 ++s->currTxDesc;
2358 s->currTxDesc %= 4;
2359 ++txcount;
2360 }
2361
2362 /* Mark transfer completed */
2363 if (!txcount)
2364 {
2365 DEBUG_PRINT(("RTL8139: transmitter queue stalled, current TxDesc = %d\n", s->currTxDesc));
2366 }
2367 }
2368
2369 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2370 {
2371
2372 int descriptor = txRegOffset/4;
2373
2374 /* handle C+ transmit mode register configuration */
2375
2376 if (s->cplus_enabled)
2377 {
2378 DEBUG_PRINT(("RTL8139C+ DTCCR write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2379
2380 /* handle Dump Tally Counters command */
2381 s->TxStatus[descriptor] = val;
2382
2383 if (descriptor == 0 && (val & 0x8))
2384 {
2385 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2386
2387 /* dump tally counters to specified memory location */
2388 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2389
2390 /* mark dump completed */
2391 s->TxStatus[0] &= ~0x8;
2392 }
2393
2394 return;
2395 }
2396
2397 DEBUG_PRINT(("RTL8139: TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2398
2399 /* mask only reserved bits */
2400 val &= ~0xff00c000; /* these bits are reset on write */
2401 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2402
2403 s->TxStatus[descriptor] = val;
2404
2405 /* attempt to start transmission */
2406 rtl8139_transmit(s);
2407 }
2408
2409 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2410 {
2411 uint32_t ret = s->TxStatus[txRegOffset/4];
2412
2413 DEBUG_PRINT(("RTL8139: TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret));
2414
2415 return ret;
2416 }
2417
2418 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2419 {
2420 uint16_t ret = 0;
2421
2422 /* Simulate TSAD, it is read only anyway */
2423
2424 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2425 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2426 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2427 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2428
2429 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2430 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2431 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2432 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2433
2434 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2435 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2436 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2437 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2438
2439 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2440 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2441 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2442 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2443
2444
2445 DEBUG_PRINT(("RTL8139: TSAD read val=0x%04x\n", ret));
2446
2447 return ret;
2448 }
2449
2450 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2451 {
2452 uint16_t ret = s->CSCR;
2453
2454 DEBUG_PRINT(("RTL8139: CSCR read val=0x%04x\n", ret));
2455
2456 return ret;
2457 }
2458
2459 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2460 {
2461 DEBUG_PRINT(("RTL8139: TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val));
2462
2463 s->TxAddr[txAddrOffset/4] = val;
2464 }
2465
2466 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2467 {
2468 uint32_t ret = s->TxAddr[txAddrOffset/4];
2469
2470 DEBUG_PRINT(("RTL8139: TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret));
2471
2472 return ret;
2473 }
2474
2475 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2476 {
2477 DEBUG_PRINT(("RTL8139: RxBufPtr write val=0x%04x\n", val));
2478
2479 /* this value is off by 16 */
2480 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2481
2482 DEBUG_PRINT((" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2483 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
2484 }
2485
2486 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2487 {
2488 /* this value is off by 16 */
2489 uint32_t ret = s->RxBufPtr - 0x10;
2490
2491 DEBUG_PRINT(("RTL8139: RxBufPtr read val=0x%04x\n", ret));
2492
2493 return ret;
2494 }
2495
2496 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2497 {
2498 /* this value is NOT off by 16 */
2499 uint32_t ret = s->RxBufAddr;
2500
2501 DEBUG_PRINT(("RTL8139: RxBufAddr read val=0x%04x\n", ret));
2502
2503 return ret;
2504 }
2505
2506 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2507 {
2508 DEBUG_PRINT(("RTL8139: RxBuf write val=0x%08x\n", val));
2509
2510 s->RxBuf = val;
2511
2512 /* may need to reset rxring here */
2513 }
2514
2515 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2516 {
2517 uint32_t ret = s->RxBuf;
2518
2519 DEBUG_PRINT(("RTL8139: RxBuf read val=0x%08x\n", ret));
2520
2521 return ret;
2522 }
2523
2524 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2525 {
2526 DEBUG_PRINT(("RTL8139: IntrMask write(w) val=0x%04x\n", val));
2527
2528 /* mask unwriteable bits */
2529 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2530
2531 s->IntrMask = val;
2532
2533 rtl8139_update_irq(s);
2534 }
2535
2536 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2537 {
2538 uint32_t ret = s->IntrMask;
2539
2540 DEBUG_PRINT(("RTL8139: IntrMask read(w) val=0x%04x\n", ret));
2541
2542 return ret;
2543 }
2544
2545 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2546 {
2547 DEBUG_PRINT(("RTL8139: IntrStatus write(w) val=0x%04x\n", val));
2548
2549 #if 0
2550
2551 /* writing to ISR has no effect */
2552
2553 return;
2554
2555 #else
2556 uint16_t newStatus = s->IntrStatus & ~val;
2557
2558 /* mask unwriteable bits */
2559 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2560
2561 /* writing 1 to interrupt status register bit clears it */
2562 s->IntrStatus = 0;
2563 rtl8139_update_irq(s);
2564
2565 s->IntrStatus = newStatus;
2566 rtl8139_update_irq(s);
2567 #endif
2568 }
2569
2570 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2571 {
2572 uint32_t ret = s->IntrStatus;
2573
2574 DEBUG_PRINT(("RTL8139: IntrStatus read(w) val=0x%04x\n", ret));
2575
2576 #if 0
2577
2578 /* reading ISR clears all interrupts */
2579 s->IntrStatus = 0;
2580
2581 rtl8139_update_irq(s);
2582
2583 #endif
2584
2585 return ret;
2586 }
2587
2588 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2589 {
2590 DEBUG_PRINT(("RTL8139: MultiIntr write(w) val=0x%04x\n", val));
2591
2592 /* mask unwriteable bits */
2593 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2594
2595 s->MultiIntr = val;
2596 }
2597
2598 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2599 {
2600 uint32_t ret = s->MultiIntr;
2601
2602 DEBUG_PRINT(("RTL8139: MultiIntr read(w) val=0x%04x\n", ret));
2603
2604 return ret;
2605 }
2606
2607 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2608 {
2609 RTL8139State *s = opaque;
2610
2611 addr &= 0xff;
2612
2613 switch (addr)
2614 {
2615 case MAC0 ... MAC0+5:
2616 s->phys[addr - MAC0] = val;
2617 break;
2618 case MAC0+6 ... MAC0+7:
2619 /* reserved */
2620 break;
2621 case MAR0 ... MAR0+7:
2622 s->mult[addr - MAR0] = val;
2623 break;
2624 case ChipCmd:
2625 rtl8139_ChipCmd_write(s, val);
2626 break;
2627 case Cfg9346:
2628 rtl8139_Cfg9346_write(s, val);
2629 break;
2630 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2631 rtl8139_TxConfig_writeb(s, val);
2632 break;
2633 case Config0:
2634 rtl8139_Config0_write(s, val);
2635 break;
2636 case Config1:
2637 rtl8139_Config1_write(s, val);
2638 break;
2639 case Config3:
2640 rtl8139_Config3_write(s, val);
2641 break;
2642 case Config4:
2643 rtl8139_Config4_write(s, val);
2644 break;
2645 case Config5:
2646 rtl8139_Config5_write(s, val);
2647 break;
2648 case MediaStatus:
2649 /* ignore */
2650 DEBUG_PRINT(("RTL8139: not implemented write(b) to MediaStatus val=0x%02x\n", val));
2651 break;
2652
2653 case HltClk:
2654 DEBUG_PRINT(("RTL8139: HltClk write val=0x%08x\n", val));
2655 if (val == 'R')
2656 {
2657 s->clock_enabled = 1;
2658 }
2659 else if (val == 'H')
2660 {
2661 s->clock_enabled = 0;
2662 }
2663 break;
2664
2665 case TxThresh:
2666 DEBUG_PRINT(("RTL8139C+ TxThresh write(b) val=0x%02x\n", val));
2667 s->TxThresh = val;
2668 break;
2669
2670 case TxPoll:
2671 DEBUG_PRINT(("RTL8139C+ TxPoll write(b) val=0x%02x\n", val));
2672 if (val & (1 << 7))
2673 {
2674 DEBUG_PRINT(("RTL8139C+ TxPoll high priority transmission (not implemented)\n"));
2675 //rtl8139_cplus_transmit(s);
2676 }
2677 if (val & (1 << 6))
2678 {
2679 DEBUG_PRINT(("RTL8139C+ TxPoll normal priority transmission\n"));
2680 rtl8139_cplus_transmit(s);
2681 }
2682
2683 break;
2684
2685 default:
2686 DEBUG_PRINT(("RTL8139: not implemented write(b) addr=0x%x val=0x%02x\n", addr, val));
2687 break;
2688 }
2689 }
2690
2691 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2692 {
2693 RTL8139State *s = opaque;
2694
2695 addr &= 0xfe;
2696
2697 switch (addr)
2698 {
2699 case IntrMask:
2700 rtl8139_IntrMask_write(s, val);
2701 break;
2702
2703 case IntrStatus:
2704 rtl8139_IntrStatus_write(s, val);
2705 break;
2706
2707 case MultiIntr:
2708 rtl8139_MultiIntr_write(s, val);
2709 break;
2710
2711 case RxBufPtr:
2712 rtl8139_RxBufPtr_write(s, val);
2713 break;
2714
2715 case BasicModeCtrl:
2716 rtl8139_BasicModeCtrl_write(s, val);
2717 break;
2718 case BasicModeStatus:
2719 rtl8139_BasicModeStatus_write(s, val);
2720 break;
2721 case NWayAdvert:
2722 DEBUG_PRINT(("RTL8139: NWayAdvert write(w) val=0x%04x\n", val));
2723 s->NWayAdvert = val;
2724 break;
2725 case NWayLPAR:
2726 DEBUG_PRINT(("RTL8139: forbidden NWayLPAR write(w) val=0x%04x\n", val));
2727 break;
2728 case NWayExpansion:
2729 DEBUG_PRINT(("RTL8139: NWayExpansion write(w) val=0x%04x\n", val));
2730 s->NWayExpansion = val;
2731 break;
2732
2733 case CpCmd:
2734 rtl8139_CpCmd_write(s, val);
2735 break;
2736
2737 case IntrMitigate:
2738 rtl8139_IntrMitigate_write(s, val);
2739 break;
2740
2741 default:
2742 DEBUG_PRINT(("RTL8139: ioport write(w) addr=0x%x val=0x%04x via write(b)\n", addr, val));
2743
2744 rtl8139_io_writeb(opaque, addr, val & 0xff);
2745 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2746 break;
2747 }
2748 }
2749
2750 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2751 {
2752 RTL8139State *s = opaque;
2753
2754 addr &= 0xfc;
2755
2756 switch (addr)
2757 {
2758 case RxMissed:
2759 DEBUG_PRINT(("RTL8139: RxMissed clearing on write\n"));
2760 s->RxMissed = 0;
2761 break;
2762
2763 case TxConfig:
2764 rtl8139_TxConfig_write(s, val);
2765 break;
2766
2767 case RxConfig:
2768 rtl8139_RxConfig_write(s, val);
2769 break;
2770
2771 case TxStatus0 ... TxStatus0+4*4-1:
2772 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2773 break;
2774
2775 case TxAddr0 ... TxAddr0+4*4-1:
2776 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2777 break;
2778
2779 case RxBuf:
2780 rtl8139_RxBuf_write(s, val);
2781 break;
2782
2783 case RxRingAddrLO:
2784 DEBUG_PRINT(("RTL8139: C+ RxRing low bits write val=0x%08x\n", val));
2785 s->RxRingAddrLO = val;
2786 break;
2787
2788 case RxRingAddrHI:
2789 DEBUG_PRINT(("RTL8139: C+ RxRing high bits write val=0x%08x\n", val));
2790 s->RxRingAddrHI = val;
2791 break;
2792
2793 case Timer:
2794 DEBUG_PRINT(("RTL8139: TCTR Timer reset on write\n"));
2795 s->TCTR = 0;
2796 s->TCTR_base = qemu_get_clock(vm_clock);
2797 break;
2798
2799 case FlashReg:
2800 DEBUG_PRINT(("RTL8139: FlashReg TimerInt write val=0x%08x\n", val));
2801 s->TimerInt = val;
2802 break;
2803
2804 default:
2805 DEBUG_PRINT(("RTL8139: ioport write(l) addr=0x%x val=0x%08x via write(b)\n", addr, val));
2806 rtl8139_io_writeb(opaque, addr, val & 0xff);
2807 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2808 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2809 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2810 break;
2811 }
2812 }
2813
2814 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2815 {
2816 RTL8139State *s = opaque;
2817 int ret;
2818
2819 addr &= 0xff;
2820
2821 switch (addr)
2822 {
2823 case MAC0 ... MAC0+5:
2824 ret = s->phys[addr - MAC0];
2825 break;
2826 case MAC0+6 ... MAC0+7:
2827 ret = 0;
2828 break;
2829 case MAR0 ... MAR0+7:
2830 ret = s->mult[addr - MAR0];
2831 break;
2832 case ChipCmd:
2833 ret = rtl8139_ChipCmd_read(s);
2834 break;
2835 case Cfg9346:
2836 ret = rtl8139_Cfg9346_read(s);
2837 break;
2838 case Config0:
2839 ret = rtl8139_Config0_read(s);
2840 break;
2841 case Config1:
2842 ret = rtl8139_Config1_read(s);
2843 break;
2844 case Config3:
2845 ret = rtl8139_Config3_read(s);
2846 break;
2847 case Config4:
2848 ret = rtl8139_Config4_read(s);
2849 break;
2850 case Config5:
2851 ret = rtl8139_Config5_read(s);
2852 break;
2853
2854 case MediaStatus:
2855 ret = 0xd0;
2856 DEBUG_PRINT(("RTL8139: MediaStatus read 0x%x\n", ret));
2857 break;
2858
2859 case HltClk:
2860 ret = s->clock_enabled;
2861 DEBUG_PRINT(("RTL8139: HltClk read 0x%x\n", ret));
2862 break;
2863
2864 case PCIRevisionID:
2865 ret = RTL8139_PCI_REVID;
2866 DEBUG_PRINT(("RTL8139: PCI Revision ID read 0x%x\n", ret));
2867 break;
2868
2869 case TxThresh:
2870 ret = s->TxThresh;
2871 DEBUG_PRINT(("RTL8139C+ TxThresh read(b) val=0x%02x\n", ret));
2872 break;
2873
2874 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
2875 ret = s->TxConfig >> 24;
2876 DEBUG_PRINT(("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret));
2877 break;
2878
2879 default:
2880 DEBUG_PRINT(("RTL8139: not implemented read(b) addr=0x%x\n", addr));
2881 ret = 0;
2882 break;
2883 }
2884
2885 return ret;
2886 }
2887
2888 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
2889 {
2890 RTL8139State *s = opaque;
2891 uint32_t ret;
2892
2893 addr &= 0xfe; /* mask lower bit */
2894
2895 switch (addr)
2896 {
2897 case IntrMask:
2898 ret = rtl8139_IntrMask_read(s);
2899 break;
2900
2901 case IntrStatus:
2902 ret = rtl8139_IntrStatus_read(s);
2903 break;
2904
2905 case MultiIntr:
2906 ret = rtl8139_MultiIntr_read(s);
2907 break;
2908
2909 case RxBufPtr:
2910 ret = rtl8139_RxBufPtr_read(s);
2911 break;
2912
2913 case RxBufAddr:
2914 ret = rtl8139_RxBufAddr_read(s);
2915 break;
2916
2917 case BasicModeCtrl:
2918 ret = rtl8139_BasicModeCtrl_read(s);
2919 break;
2920 case BasicModeStatus:
2921 ret = rtl8139_BasicModeStatus_read(s);
2922 break;
2923 case NWayAdvert:
2924 ret = s->NWayAdvert;
2925 DEBUG_PRINT(("RTL8139: NWayAdvert read(w) val=0x%04x\n", ret));
2926 break;
2927 case NWayLPAR:
2928 ret = s->NWayLPAR;
2929 DEBUG_PRINT(("RTL8139: NWayLPAR read(w) val=0x%04x\n", ret));
2930 break;
2931 case NWayExpansion:
2932 ret = s->NWayExpansion;
2933 DEBUG_PRINT(("RTL8139: NWayExpansion read(w) val=0x%04x\n", ret));
2934 break;
2935
2936 case CpCmd:
2937 ret = rtl8139_CpCmd_read(s);
2938 break;
2939
2940 case IntrMitigate:
2941 ret = rtl8139_IntrMitigate_read(s);
2942 break;
2943
2944 case TxSummary:
2945 ret = rtl8139_TSAD_read(s);
2946 break;
2947
2948 case CSCR:
2949 ret = rtl8139_CSCR_read(s);
2950 break;
2951
2952 default:
2953 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x via read(b)\n", addr));
2954
2955 ret = rtl8139_io_readb(opaque, addr);
2956 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
2957
2958 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x val=0x%04x\n", addr, ret));
2959 break;
2960 }
2961
2962 return ret;
2963 }
2964
2965 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
2966 {
2967 RTL8139State *s = opaque;
2968 uint32_t ret;
2969
2970 addr &= 0xfc; /* also mask low 2 bits */
2971
2972 switch (addr)
2973 {
2974 case RxMissed:
2975 ret = s->RxMissed;
2976
2977 DEBUG_PRINT(("RTL8139: RxMissed read val=0x%08x\n", ret));
2978 break;
2979
2980 case TxConfig:
2981 ret = rtl8139_TxConfig_read(s);
2982 break;
2983
2984 case RxConfig:
2985 ret = rtl8139_RxConfig_read(s);
2986 break;
2987
2988 case TxStatus0 ... TxStatus0+4*4-1:
2989 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
2990 break;
2991
2992 case TxAddr0 ... TxAddr0+4*4-1:
2993 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
2994 break;
2995
2996 case RxBuf:
2997 ret = rtl8139_RxBuf_read(s);
2998 break;
2999
3000 case RxRingAddrLO:
3001 ret = s->RxRingAddrLO;
3002 DEBUG_PRINT(("RTL8139: C+ RxRing low bits read val=0x%08x\n", ret));
3003 break;
3004
3005 case RxRingAddrHI:
3006 ret = s->RxRingAddrHI;
3007 DEBUG_PRINT(("RTL8139: C+ RxRing high bits read val=0x%08x\n", ret));
3008 break;
3009
3010 case Timer:
3011 ret = s->TCTR;
3012 DEBUG_PRINT(("RTL8139: TCTR Timer read val=0x%08x\n", ret));
3013 break;
3014
3015 case FlashReg:
3016 ret = s->TimerInt;
3017 DEBUG_PRINT(("RTL8139: FlashReg TimerInt read val=0x%08x\n", ret));
3018 break;
3019
3020 default:
3021 DEBUG_PRINT(("RTL8139: ioport read(l) addr=0x%x via read(b)\n", addr));
3022
3023 ret = rtl8139_io_readb(opaque, addr);
3024 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3025 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3026 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3027
3028 DEBUG_PRINT(("RTL8139: read(l) addr=0x%x val=%08x\n", addr, ret));
3029 break;
3030 }
3031
3032 return ret;
3033 }
3034
3035 /* */
3036
3037 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3038 {
3039 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3040 }
3041
3042 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3043 {
3044 rtl8139_io_writew(opaque, addr & 0xFF, val);
3045 }
3046
3047 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3048 {
3049 rtl8139_io_writel(opaque, addr & 0xFF, val);
3050 }
3051
3052 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3053 {
3054 return rtl8139_io_readb(opaque, addr & 0xFF);
3055 }
3056
3057 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3058 {
3059 return rtl8139_io_readw(opaque, addr & 0xFF);
3060 }
3061
3062 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3063 {
3064 return rtl8139_io_readl(opaque, addr & 0xFF);
3065 }
3066
3067 /* */
3068
3069 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3070 {
3071 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3072 }
3073
3074 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3075 {
3076 #ifdef TARGET_WORDS_BIGENDIAN
3077 val = bswap16(val);
3078 #endif
3079 rtl8139_io_writew(opaque, addr & 0xFF, val);
3080 }
3081
3082 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3083 {
3084 #ifdef TARGET_WORDS_BIGENDIAN
3085 val = bswap32(val);
3086 #endif
3087 rtl8139_io_writel(opaque, addr & 0xFF, val);
3088 }
3089
3090 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3091 {
3092 return rtl8139_io_readb(opaque, addr & 0xFF);
3093 }
3094
3095 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3096 {
3097 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3098 #ifdef TARGET_WORDS_BIGENDIAN
3099 val = bswap16(val);
3100 #endif
3101 return val;
3102 }
3103
3104 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3105 {
3106 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3107 #ifdef TARGET_WORDS_BIGENDIAN
3108 val = bswap32(val);
3109 #endif
3110 return val;
3111 }
3112
3113 /* */
3114
3115 static void rtl8139_save(QEMUFile* f,void* opaque)
3116 {
3117 RTL8139State* s=(RTL8139State*)opaque;
3118 unsigned int i;
3119
3120 pci_device_save(s->pci_dev, f);
3121
3122 qemu_put_buffer(f, s->phys, 6);
3123 qemu_put_buffer(f, s->mult, 8);
3124
3125 for (i=0; i<4; ++i)
3126 {
3127 qemu_put_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3128 }
3129 for (i=0; i<4; ++i)
3130 {
3131 qemu_put_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3132 }
3133
3134 qemu_put_be32s(f, &s->RxBuf); /* Receive buffer */
3135 qemu_put_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3136 qemu_put_be32s(f, &s->RxBufPtr);
3137 qemu_put_be32s(f, &s->RxBufAddr);
3138
3139 qemu_put_be16s(f, &s->IntrStatus);
3140 qemu_put_be16s(f, &s->IntrMask);
3141
3142 qemu_put_be32s(f, &s->TxConfig);
3143 qemu_put_be32s(f, &s->RxConfig);
3144 qemu_put_be32s(f, &s->RxMissed);
3145 qemu_put_be16s(f, &s->CSCR);
3146
3147 qemu_put_8s(f, &s->Cfg9346);
3148 qemu_put_8s(f, &s->Config0);
3149 qemu_put_8s(f, &s->Config1);
3150 qemu_put_8s(f, &s->Config3);
3151 qemu_put_8s(f, &s->Config4);
3152 qemu_put_8s(f, &s->Config5);
3153
3154 qemu_put_8s(f, &s->clock_enabled);
3155 qemu_put_8s(f, &s->bChipCmdState);
3156
3157 qemu_put_be16s(f, &s->MultiIntr);
3158
3159 qemu_put_be16s(f, &s->BasicModeCtrl);
3160 qemu_put_be16s(f, &s->BasicModeStatus);
3161 qemu_put_be16s(f, &s->NWayAdvert);
3162 qemu_put_be16s(f, &s->NWayLPAR);
3163 qemu_put_be16s(f, &s->NWayExpansion);
3164
3165 qemu_put_be16s(f, &s->CpCmd);
3166 qemu_put_8s(f, &s->TxThresh);
3167
3168 i = 0;
3169 qemu_put_be32s(f, &i); /* unused. */
3170 qemu_put_buffer(f, s->macaddr, 6);
3171 qemu_put_be32(f, s->rtl8139_mmio_io_addr);
3172
3173 qemu_put_be32s(f, &s->currTxDesc);
3174 qemu_put_be32s(f, &s->currCPlusRxDesc);
3175 qemu_put_be32s(f, &s->currCPlusTxDesc);
3176 qemu_put_be32s(f, &s->RxRingAddrLO);
3177 qemu_put_be32s(f, &s->RxRingAddrHI);
3178
3179 for (i=0; i<EEPROM_9346_SIZE; ++i)
3180 {
3181 qemu_put_be16s(f, &s->eeprom.contents[i]);
3182 }
3183 qemu_put_be32(f, s->eeprom.mode);
3184 qemu_put_be32s(f, &s->eeprom.tick);
3185 qemu_put_8s(f, &s->eeprom.address);
3186 qemu_put_be16s(f, &s->eeprom.input);
3187 qemu_put_be16s(f, &s->eeprom.output);
3188
3189 qemu_put_8s(f, &s->eeprom.eecs);
3190 qemu_put_8s(f, &s->eeprom.eesk);
3191 qemu_put_8s(f, &s->eeprom.eedi);
3192 qemu_put_8s(f, &s->eeprom.eedo);
3193
3194 qemu_put_be32s(f, &s->TCTR);
3195 qemu_put_be32s(f, &s->TimerInt);
3196 qemu_put_be64(f, s->TCTR_base);
3197
3198 RTL8139TallyCounters_save(f, &s->tally_counters);
3199
3200 qemu_put_be32s(f, &s->cplus_enabled);
3201 }
3202
3203 static int rtl8139_load(QEMUFile* f,void* opaque,int version_id)
3204 {
3205 RTL8139State* s=(RTL8139State*)opaque;
3206 unsigned int i;
3207 int ret;
3208
3209 /* just 2 versions for now */
3210 if (version_id > 4)
3211 return -EINVAL;
3212
3213 if (version_id >= 3) {
3214 ret = pci_device_load(s->pci_dev, f);
3215 if (ret < 0)
3216 return ret;
3217 }
3218
3219 /* saved since version 1 */
3220 qemu_get_buffer(f, s->phys, 6);
3221 qemu_get_buffer(f, s->mult, 8);
3222
3223 for (i=0; i<4; ++i)
3224 {
3225 qemu_get_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3226 }
3227 for (i=0; i<4; ++i)
3228 {
3229 qemu_get_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3230 }
3231
3232 qemu_get_be32s(f, &s->RxBuf); /* Receive buffer */
3233 qemu_get_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3234 qemu_get_be32s(f, &s->RxBufPtr);
3235 qemu_get_be32s(f, &s->RxBufAddr);
3236
3237 qemu_get_be16s(f, &s->IntrStatus);
3238 qemu_get_be16s(f, &s->IntrMask);
3239
3240 qemu_get_be32s(f, &s->TxConfig);
3241 qemu_get_be32s(f, &s->RxConfig);
3242 qemu_get_be32s(f, &s->RxMissed);
3243 qemu_get_be16s(f, &s->CSCR);
3244
3245 qemu_get_8s(f, &s->Cfg9346);
3246 qemu_get_8s(f, &s->Config0);
3247 qemu_get_8s(f, &s->Config1);
3248 qemu_get_8s(f, &s->Config3);
3249 qemu_get_8s(f, &s->Config4);
3250 qemu_get_8s(f, &s->Config5);
3251
3252 qemu_get_8s(f, &s->clock_enabled);
3253 qemu_get_8s(f, &s->bChipCmdState);
3254
3255 qemu_get_be16s(f, &s->MultiIntr);
3256
3257 qemu_get_be16s(f, &s->BasicModeCtrl);
3258 qemu_get_be16s(f, &s->BasicModeStatus);
3259 qemu_get_be16s(f, &s->NWayAdvert);
3260 qemu_get_be16s(f, &s->NWayLPAR);
3261 qemu_get_be16s(f, &s->NWayExpansion);
3262
3263 qemu_get_be16s(f, &s->CpCmd);
3264 qemu_get_8s(f, &s->TxThresh);
3265
3266 qemu_get_be32s(f, &i); /* unused. */
3267 qemu_get_buffer(f, s->macaddr, 6);
3268 s->rtl8139_mmio_io_addr=qemu_get_be32(f);
3269
3270 qemu_get_be32s(f, &s->currTxDesc);
3271 qemu_get_be32s(f, &s->currCPlusRxDesc);
3272 qemu_get_be32s(f, &s->currCPlusTxDesc);
3273 qemu_get_be32s(f, &s->RxRingAddrLO);
3274 qemu_get_be32s(f, &s->RxRingAddrHI);
3275
3276 for (i=0; i<EEPROM_9346_SIZE; ++i)
3277 {
3278 qemu_get_be16s(f, &s->eeprom.contents[i]);
3279 }
3280 s->eeprom.mode=qemu_get_be32(f);
3281 qemu_get_be32s(f, &s->eeprom.tick);
3282 qemu_get_8s(f, &s->eeprom.address);
3283 qemu_get_be16s(f, &s->eeprom.input);
3284 qemu_get_be16s(f, &s->eeprom.output);
3285
3286 qemu_get_8s(f, &s->eeprom.eecs);
3287 qemu_get_8s(f, &s->eeprom.eesk);
3288 qemu_get_8s(f, &s->eeprom.eedi);
3289 qemu_get_8s(f, &s->eeprom.eedo);
3290
3291 /* saved since version 2 */
3292 if (version_id >= 2)
3293 {
3294 qemu_get_be32s(f, &s->TCTR);
3295 qemu_get_be32s(f, &s->TimerInt);
3296 s->TCTR_base=qemu_get_be64(f);
3297
3298 RTL8139TallyCounters_load(f, &s->tally_counters);
3299 }
3300 else
3301 {
3302 /* not saved, use default */
3303 s->TCTR = 0;
3304 s->TimerInt = 0;
3305 s->TCTR_base = 0;
3306
3307 RTL8139TallyCounters_clear(&s->tally_counters);
3308 }
3309
3310 if (version_id >= 4) {
3311 qemu_get_be32s(f, &s->cplus_enabled);
3312 } else {
3313 s->cplus_enabled = s->CpCmd != 0;
3314 }
3315
3316 return 0;
3317 }
3318
3319 /***********************************************************/
3320 /* PCI RTL8139 definitions */
3321
3322 typedef struct PCIRTL8139State {
3323 PCIDevice dev;
3324 RTL8139State rtl8139;
3325 } PCIRTL8139State;
3326
3327 static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num,
3328 uint32_t addr, uint32_t size, int type)
3329 {
3330 PCIRTL8139State *d = (PCIRTL8139State *)pci_dev;
3331 RTL8139State *s = &d->rtl8139;
3332
3333 cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr);
3334 }
3335
3336 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3337 uint32_t addr, uint32_t size, int type)
3338 {
3339 PCIRTL8139State *d = (PCIRTL8139State *)pci_dev;
3340 RTL8139State *s = &d->rtl8139;
3341
3342 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3343 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3344
3345 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3346 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3347
3348 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3349 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3350 }
3351
3352 static CPUReadMemoryFunc *rtl8139_mmio_read[3] = {
3353 rtl8139_mmio_readb,
3354 rtl8139_mmio_readw,
3355 rtl8139_mmio_readl,
3356 };
3357
3358 static CPUWriteMemoryFunc *rtl8139_mmio_write[3] = {
3359 rtl8139_mmio_writeb,
3360 rtl8139_mmio_writew,
3361 rtl8139_mmio_writel,
3362 };
3363
3364 static inline int64_t rtl8139_get_next_tctr_time(RTL8139State *s, int64_t current_time)
3365 {
3366 int64_t next_time = current_time +
3367 muldiv64(1, ticks_per_sec, PCI_FREQUENCY);
3368 if (next_time <= current_time)
3369 next_time = current_time + 1;
3370 return next_time;
3371 }
3372
3373 #ifdef RTL8139_ONBOARD_TIMER
3374 static void rtl8139_timer(void *opaque)
3375 {
3376 RTL8139State *s = opaque;
3377
3378 int is_timeout = 0;
3379
3380 int64_t curr_time;
3381 uint32_t curr_tick;
3382
3383 if (!s->clock_enabled)
3384 {
3385 DEBUG_PRINT(("RTL8139: >>> timer: clock is not running\n"));
3386 return;
3387 }
3388
3389 curr_time = qemu_get_clock(vm_clock);
3390
3391 curr_tick = muldiv64(curr_time - s->TCTR_base, PCI_FREQUENCY, ticks_per_sec);
3392
3393 if (s->TimerInt && curr_tick >= s->TimerInt)
3394 {
3395 if (s->TCTR < s->TimerInt || curr_tick < s->TCTR)
3396 {
3397 is_timeout = 1;
3398 }
3399 }
3400
3401 s->TCTR = curr_tick;
3402
3403 // DEBUG_PRINT(("RTL8139: >>> timer: tick=%08u\n", s->TCTR));
3404
3405 if (is_timeout)
3406 {
3407 DEBUG_PRINT(("RTL8139: >>> timer: timeout tick=%08u\n", s->TCTR));
3408 s->IntrStatus |= PCSTimeout;
3409 rtl8139_update_irq(s);
3410 }
3411
3412 qemu_mod_timer(s->timer,
3413 rtl8139_get_next_tctr_time(s,curr_time));
3414 }
3415 #endif /* RTL8139_ONBOARD_TIMER */
3416
3417 void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn)
3418 {
3419 PCIRTL8139State *d;
3420 RTL8139State *s;
3421 uint8_t *pci_conf;
3422
3423 d = (PCIRTL8139State *)pci_register_device(bus,
3424 "RTL8139", sizeof(PCIRTL8139State),
3425 devfn,
3426 NULL, NULL);
3427 pci_conf = d->dev.config;
3428 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK);
3429 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8139);
3430 pci_conf[0x04] = 0x05; /* command = I/O space, Bus Master */
3431 pci_conf[0x08] = RTL8139_PCI_REVID; /* PCI revision ID; >=0x20 is for 8139C+ */
3432 pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET);
3433 pci_conf[0x0e] = 0x00; /* header_type */
3434 pci_conf[0x3d] = 1; /* interrupt pin 0 */
3435 pci_conf[0x34] = 0xdc;
3436
3437 s = &d->rtl8139;
3438
3439 /* I/O handler for memory-mapped I/O */
3440 s->rtl8139_mmio_io_addr =
3441 cpu_register_io_memory(0, rtl8139_mmio_read, rtl8139_mmio_write, s);
3442
3443 pci_register_io_region(&d->dev, 0, 0x100,
3444 PCI_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3445
3446 pci_register_io_region(&d->dev, 1, 0x100,
3447 PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map);
3448
3449 s->pci_dev = (PCIDevice *)d;
3450 memcpy(s->macaddr, nd->macaddr, 6);
3451 rtl8139_reset(s);
3452 s->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name,
3453 rtl8139_receive, rtl8139_can_receive, s);
3454
3455 qemu_format_nic_info_str(s->vc, s->macaddr);
3456
3457 s->cplus_txbuffer = NULL;
3458 s->cplus_txbuffer_len = 0;
3459 s->cplus_txbuffer_offset = 0;
3460
3461 register_savevm("rtl8139", -1, 4, rtl8139_save, rtl8139_load, s);
3462
3463 #ifdef RTL8139_ONBOARD_TIMER
3464 s->timer = qemu_new_timer(vm_clock, rtl8139_timer, s);
3465
3466 qemu_mod_timer(s->timer,
3467 rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock)));
3468 #endif /* RTL8139_ONBOARD_TIMER */
3469 }