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rtl8139: use qdev properties for configuration.
[qemu.git] / hw / rtl8139.c
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 #include "loader.h"
51
52 /* debug RTL8139 card */
53 //#define DEBUG_RTL8139 1
54
55 #define PCI_FREQUENCY 33000000L
56
57 /* debug RTL8139 card C+ mode only */
58 //#define DEBUG_RTL8139CP 1
59
60 /* Calculate CRCs properly on Rx packets */
61 #define RTL8139_CALCULATE_RXCRC 1
62
63 /* Uncomment to enable on-board timer interrupts */
64 //#define RTL8139_ONBOARD_TIMER 1
65
66 #if defined(RTL8139_CALCULATE_RXCRC)
67 /* For crc32 */
68 #include <zlib.h>
69 #endif
70
71 #define SET_MASKED(input, mask, curr) \
72 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) )
73
74 /* arg % size for size which is a power of 2 */
75 #define MOD2(input, size) \
76 ( ( input ) & ( size - 1 ) )
77
78 #if defined (DEBUG_RTL8139)
79 # define DEBUG_PRINT(x) do { printf x ; } while (0)
80 #else
81 # define DEBUG_PRINT(x)
82 #endif
83
84 /* Symbolic offsets to registers. */
85 enum RTL8139_registers {
86 MAC0 = 0, /* Ethernet hardware address. */
87 MAR0 = 8, /* Multicast filter. */
88 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
89 /* Dump Tally Conter control register(64bit). C+ mode only */
90 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
91 RxBuf = 0x30,
92 ChipCmd = 0x37,
93 RxBufPtr = 0x38,
94 RxBufAddr = 0x3A,
95 IntrMask = 0x3C,
96 IntrStatus = 0x3E,
97 TxConfig = 0x40,
98 RxConfig = 0x44,
99 Timer = 0x48, /* A general-purpose counter. */
100 RxMissed = 0x4C, /* 24 bits valid, write clears. */
101 Cfg9346 = 0x50,
102 Config0 = 0x51,
103 Config1 = 0x52,
104 FlashReg = 0x54,
105 MediaStatus = 0x58,
106 Config3 = 0x59,
107 Config4 = 0x5A, /* absent on RTL-8139A */
108 HltClk = 0x5B,
109 MultiIntr = 0x5C,
110 PCIRevisionID = 0x5E,
111 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
112 BasicModeCtrl = 0x62,
113 BasicModeStatus = 0x64,
114 NWayAdvert = 0x66,
115 NWayLPAR = 0x68,
116 NWayExpansion = 0x6A,
117 /* Undocumented registers, but required for proper operation. */
118 FIFOTMS = 0x70, /* FIFO Control and test. */
119 CSCR = 0x74, /* Chip Status and Configuration Register. */
120 PARA78 = 0x78,
121 PARA7c = 0x7c, /* Magic transceiver parameter register. */
122 Config5 = 0xD8, /* absent on RTL-8139A */
123 /* C+ mode */
124 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
125 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
126 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
127 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
128 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
129 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
130 TxThresh = 0xEC, /* Early Tx threshold */
131 };
132
133 enum ClearBitMasks {
134 MultiIntrClear = 0xF000,
135 ChipCmdClear = 0xE2,
136 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
137 };
138
139 enum ChipCmdBits {
140 CmdReset = 0x10,
141 CmdRxEnb = 0x08,
142 CmdTxEnb = 0x04,
143 RxBufEmpty = 0x01,
144 };
145
146 /* C+ mode */
147 enum CplusCmdBits {
148 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
149 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
150 CPlusRxEnb = 0x0002,
151 CPlusTxEnb = 0x0001,
152 };
153
154 /* Interrupt register bits, using my own meaningful names. */
155 enum IntrStatusBits {
156 PCIErr = 0x8000,
157 PCSTimeout = 0x4000,
158 RxFIFOOver = 0x40,
159 RxUnderrun = 0x20,
160 RxOverflow = 0x10,
161 TxErr = 0x08,
162 TxOK = 0x04,
163 RxErr = 0x02,
164 RxOK = 0x01,
165
166 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
167 };
168
169 enum TxStatusBits {
170 TxHostOwns = 0x2000,
171 TxUnderrun = 0x4000,
172 TxStatOK = 0x8000,
173 TxOutOfWindow = 0x20000000,
174 TxAborted = 0x40000000,
175 TxCarrierLost = 0x80000000,
176 };
177 enum RxStatusBits {
178 RxMulticast = 0x8000,
179 RxPhysical = 0x4000,
180 RxBroadcast = 0x2000,
181 RxBadSymbol = 0x0020,
182 RxRunt = 0x0010,
183 RxTooLong = 0x0008,
184 RxCRCErr = 0x0004,
185 RxBadAlign = 0x0002,
186 RxStatusOK = 0x0001,
187 };
188
189 /* Bits in RxConfig. */
190 enum rx_mode_bits {
191 AcceptErr = 0x20,
192 AcceptRunt = 0x10,
193 AcceptBroadcast = 0x08,
194 AcceptMulticast = 0x04,
195 AcceptMyPhys = 0x02,
196 AcceptAllPhys = 0x01,
197 };
198
199 /* Bits in TxConfig. */
200 enum tx_config_bits {
201
202 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
203 TxIFGShift = 24,
204 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
205 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
206 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
207 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
208
209 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
210 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
211 TxClearAbt = (1 << 0), /* Clear abort (WO) */
212 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
213 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
214
215 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
216 };
217
218
219 /* Transmit Status of All Descriptors (TSAD) Register */
220 enum TSAD_bits {
221 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
222 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
223 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
224 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
225 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
226 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
227 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
228 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
229 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
230 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
231 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
232 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
233 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
234 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
235 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
236 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
237 };
238
239
240 /* Bits in Config1 */
241 enum Config1Bits {
242 Cfg1_PM_Enable = 0x01,
243 Cfg1_VPD_Enable = 0x02,
244 Cfg1_PIO = 0x04,
245 Cfg1_MMIO = 0x08,
246 LWAKE = 0x10, /* not on 8139, 8139A */
247 Cfg1_Driver_Load = 0x20,
248 Cfg1_LED0 = 0x40,
249 Cfg1_LED1 = 0x80,
250 SLEEP = (1 << 1), /* only on 8139, 8139A */
251 PWRDN = (1 << 0), /* only on 8139, 8139A */
252 };
253
254 /* Bits in Config3 */
255 enum Config3Bits {
256 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
257 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
258 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
259 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
260 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
261 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
262 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
263 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
264 };
265
266 /* Bits in Config4 */
267 enum Config4Bits {
268 LWPTN = (1 << 2), /* not on 8139, 8139A */
269 };
270
271 /* Bits in Config5 */
272 enum Config5Bits {
273 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
274 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
275 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
276 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
277 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
278 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
279 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
280 };
281
282 enum RxConfigBits {
283 /* rx fifo threshold */
284 RxCfgFIFOShift = 13,
285 RxCfgFIFONone = (7 << RxCfgFIFOShift),
286
287 /* Max DMA burst */
288 RxCfgDMAShift = 8,
289 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
290
291 /* rx ring buffer length */
292 RxCfgRcv8K = 0,
293 RxCfgRcv16K = (1 << 11),
294 RxCfgRcv32K = (1 << 12),
295 RxCfgRcv64K = (1 << 11) | (1 << 12),
296
297 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
298 RxNoWrap = (1 << 7),
299 };
300
301 /* Twister tuning parameters from RealTek.
302 Completely undocumented, but required to tune bad links on some boards. */
303 /*
304 enum CSCRBits {
305 CSCR_LinkOKBit = 0x0400,
306 CSCR_LinkChangeBit = 0x0800,
307 CSCR_LinkStatusBits = 0x0f000,
308 CSCR_LinkDownOffCmd = 0x003c0,
309 CSCR_LinkDownCmd = 0x0f3c0,
310 */
311 enum CSCRBits {
312 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
313 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*/
314 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
315 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
316 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
317 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
318 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*/
319 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
320 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
321 };
322
323 enum Cfg9346Bits {
324 Cfg9346_Lock = 0x00,
325 Cfg9346_Unlock = 0xC0,
326 };
327
328 typedef enum {
329 CH_8139 = 0,
330 CH_8139_K,
331 CH_8139A,
332 CH_8139A_G,
333 CH_8139B,
334 CH_8130,
335 CH_8139C,
336 CH_8100,
337 CH_8100B_8139D,
338 CH_8101,
339 } chip_t;
340
341 enum chip_flags {
342 HasHltClk = (1 << 0),
343 HasLWake = (1 << 1),
344 };
345
346 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
347 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
348 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
349
350 #define RTL8139_PCI_REVID_8139 0x10
351 #define RTL8139_PCI_REVID_8139CPLUS 0x20
352
353 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
354
355 /* Size is 64 * 16bit words */
356 #define EEPROM_9346_ADDR_BITS 6
357 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
358 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
359
360 enum Chip9346Operation
361 {
362 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
363 Chip9346_op_read = 0x80, /* 10 AAAAAA */
364 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
365 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
366 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
367 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
368 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
369 };
370
371 enum Chip9346Mode
372 {
373 Chip9346_none = 0,
374 Chip9346_enter_command_mode,
375 Chip9346_read_command,
376 Chip9346_data_read, /* from output register */
377 Chip9346_data_write, /* to input register, then to contents at specified address */
378 Chip9346_data_write_all, /* to input register, then filling contents */
379 };
380
381 typedef struct EEprom9346
382 {
383 uint16_t contents[EEPROM_9346_SIZE];
384 int mode;
385 uint32_t tick;
386 uint8_t address;
387 uint16_t input;
388 uint16_t output;
389
390 uint8_t eecs;
391 uint8_t eesk;
392 uint8_t eedi;
393 uint8_t eedo;
394 } EEprom9346;
395
396 typedef struct RTL8139TallyCounters
397 {
398 /* Tally counters */
399 uint64_t TxOk;
400 uint64_t RxOk;
401 uint64_t TxERR;
402 uint32_t RxERR;
403 uint16_t MissPkt;
404 uint16_t FAE;
405 uint32_t Tx1Col;
406 uint32_t TxMCol;
407 uint64_t RxOkPhy;
408 uint64_t RxOkBrd;
409 uint32_t RxOkMul;
410 uint16_t TxAbt;
411 uint16_t TxUndrn;
412 } RTL8139TallyCounters;
413
414 /* Clears all tally counters */
415 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
416
417 /* Writes tally counters to specified physical memory address */
418 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* counters);
419
420 /* Loads values of tally counters from VM state file */
421 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters);
422
423 /* Saves values of tally counters to VM state file */
424 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters);
425
426 typedef struct RTL8139State {
427 PCIDevice dev;
428 uint8_t phys[8]; /* mac address */
429 uint8_t mult[8]; /* multicast mask array */
430
431 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
432 uint32_t TxAddr[4]; /* TxAddr0 */
433 uint32_t RxBuf; /* Receive buffer */
434 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
435 uint32_t RxBufPtr;
436 uint32_t RxBufAddr;
437
438 uint16_t IntrStatus;
439 uint16_t IntrMask;
440
441 uint32_t TxConfig;
442 uint32_t RxConfig;
443 uint32_t RxMissed;
444
445 uint16_t CSCR;
446
447 uint8_t Cfg9346;
448 uint8_t Config0;
449 uint8_t Config1;
450 uint8_t Config3;
451 uint8_t Config4;
452 uint8_t Config5;
453
454 uint8_t clock_enabled;
455 uint8_t bChipCmdState;
456
457 uint16_t MultiIntr;
458
459 uint16_t BasicModeCtrl;
460 uint16_t BasicModeStatus;
461 uint16_t NWayAdvert;
462 uint16_t NWayLPAR;
463 uint16_t NWayExpansion;
464
465 uint16_t CpCmd;
466 uint8_t TxThresh;
467
468 VLANClientState *vc;
469 NICConf conf;
470 int rtl8139_mmio_io_addr;
471
472 /* C ring mode */
473 uint32_t currTxDesc;
474
475 /* C+ mode */
476 uint32_t cplus_enabled;
477
478 uint32_t currCPlusRxDesc;
479 uint32_t currCPlusTxDesc;
480
481 uint32_t RxRingAddrLO;
482 uint32_t RxRingAddrHI;
483
484 EEprom9346 eeprom;
485
486 uint32_t TCTR;
487 uint32_t TimerInt;
488 int64_t TCTR_base;
489
490 /* Tally counters */
491 RTL8139TallyCounters tally_counters;
492
493 /* Non-persistent data */
494 uint8_t *cplus_txbuffer;
495 int cplus_txbuffer_len;
496 int cplus_txbuffer_offset;
497
498 /* PCI interrupt timer */
499 QEMUTimer *timer;
500
501 } RTL8139State;
502
503 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
504 {
505 DEBUG_PRINT(("RTL8139: eeprom command 0x%02x\n", command));
506
507 switch (command & Chip9346_op_mask)
508 {
509 case Chip9346_op_read:
510 {
511 eeprom->address = command & EEPROM_9346_ADDR_MASK;
512 eeprom->output = eeprom->contents[eeprom->address];
513 eeprom->eedo = 0;
514 eeprom->tick = 0;
515 eeprom->mode = Chip9346_data_read;
516 DEBUG_PRINT(("RTL8139: eeprom read from address 0x%02x data=0x%04x\n",
517 eeprom->address, eeprom->output));
518 }
519 break;
520
521 case Chip9346_op_write:
522 {
523 eeprom->address = command & EEPROM_9346_ADDR_MASK;
524 eeprom->input = 0;
525 eeprom->tick = 0;
526 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
527 DEBUG_PRINT(("RTL8139: eeprom begin write to address 0x%02x\n",
528 eeprom->address));
529 }
530 break;
531 default:
532 eeprom->mode = Chip9346_none;
533 switch (command & Chip9346_op_ext_mask)
534 {
535 case Chip9346_op_write_enable:
536 DEBUG_PRINT(("RTL8139: eeprom write enabled\n"));
537 break;
538 case Chip9346_op_write_all:
539 DEBUG_PRINT(("RTL8139: eeprom begin write all\n"));
540 break;
541 case Chip9346_op_write_disable:
542 DEBUG_PRINT(("RTL8139: eeprom write disabled\n"));
543 break;
544 }
545 break;
546 }
547 }
548
549 static void prom9346_shift_clock(EEprom9346 *eeprom)
550 {
551 int bit = eeprom->eedi?1:0;
552
553 ++ eeprom->tick;
554
555 DEBUG_PRINT(("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi, eeprom->eedo));
556
557 switch (eeprom->mode)
558 {
559 case Chip9346_enter_command_mode:
560 if (bit)
561 {
562 eeprom->mode = Chip9346_read_command;
563 eeprom->tick = 0;
564 eeprom->input = 0;
565 DEBUG_PRINT(("eeprom: +++ synchronized, begin command read\n"));
566 }
567 break;
568
569 case Chip9346_read_command:
570 eeprom->input = (eeprom->input << 1) | (bit & 1);
571 if (eeprom->tick == 8)
572 {
573 prom9346_decode_command(eeprom, eeprom->input & 0xff);
574 }
575 break;
576
577 case Chip9346_data_read:
578 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
579 eeprom->output <<= 1;
580 if (eeprom->tick == 16)
581 {
582 #if 1
583 // the FreeBSD drivers (rl and re) don't explicitly toggle
584 // CS between reads (or does setting Cfg9346 to 0 count too?),
585 // so we need to enter wait-for-command state here
586 eeprom->mode = Chip9346_enter_command_mode;
587 eeprom->input = 0;
588 eeprom->tick = 0;
589
590 DEBUG_PRINT(("eeprom: +++ end of read, awaiting next command\n"));
591 #else
592 // original behaviour
593 ++eeprom->address;
594 eeprom->address &= EEPROM_9346_ADDR_MASK;
595 eeprom->output = eeprom->contents[eeprom->address];
596 eeprom->tick = 0;
597
598 DEBUG_PRINT(("eeprom: +++ read next address 0x%02x data=0x%04x\n",
599 eeprom->address, eeprom->output));
600 #endif
601 }
602 break;
603
604 case Chip9346_data_write:
605 eeprom->input = (eeprom->input << 1) | (bit & 1);
606 if (eeprom->tick == 16)
607 {
608 DEBUG_PRINT(("RTL8139: eeprom write to address 0x%02x data=0x%04x\n",
609 eeprom->address, eeprom->input));
610
611 eeprom->contents[eeprom->address] = eeprom->input;
612 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
613 eeprom->tick = 0;
614 eeprom->input = 0;
615 }
616 break;
617
618 case Chip9346_data_write_all:
619 eeprom->input = (eeprom->input << 1) | (bit & 1);
620 if (eeprom->tick == 16)
621 {
622 int i;
623 for (i = 0; i < EEPROM_9346_SIZE; i++)
624 {
625 eeprom->contents[i] = eeprom->input;
626 }
627 DEBUG_PRINT(("RTL8139: eeprom filled with data=0x%04x\n",
628 eeprom->input));
629
630 eeprom->mode = Chip9346_enter_command_mode;
631 eeprom->tick = 0;
632 eeprom->input = 0;
633 }
634 break;
635
636 default:
637 break;
638 }
639 }
640
641 static int prom9346_get_wire(RTL8139State *s)
642 {
643 EEprom9346 *eeprom = &s->eeprom;
644 if (!eeprom->eecs)
645 return 0;
646
647 return eeprom->eedo;
648 }
649
650 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
651 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
652 {
653 EEprom9346 *eeprom = &s->eeprom;
654 uint8_t old_eecs = eeprom->eecs;
655 uint8_t old_eesk = eeprom->eesk;
656
657 eeprom->eecs = eecs;
658 eeprom->eesk = eesk;
659 eeprom->eedi = eedi;
660
661 DEBUG_PRINT(("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n",
662 eeprom->eecs, eeprom->eesk, eeprom->eedi, eeprom->eedo));
663
664 if (!old_eecs && eecs)
665 {
666 /* Synchronize start */
667 eeprom->tick = 0;
668 eeprom->input = 0;
669 eeprom->output = 0;
670 eeprom->mode = Chip9346_enter_command_mode;
671
672 DEBUG_PRINT(("=== eeprom: begin access, enter command mode\n"));
673 }
674
675 if (!eecs)
676 {
677 DEBUG_PRINT(("=== eeprom: end access\n"));
678 return;
679 }
680
681 if (!old_eesk && eesk)
682 {
683 /* SK front rules */
684 prom9346_shift_clock(eeprom);
685 }
686 }
687
688 static void rtl8139_update_irq(RTL8139State *s)
689 {
690 int isr;
691 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
692
693 DEBUG_PRINT(("RTL8139: Set IRQ to %d (%04x %04x)\n",
694 isr ? 1 : 0, s->IntrStatus, s->IntrMask));
695
696 qemu_set_irq(s->dev.irq[0], (isr != 0));
697 }
698
699 #define POLYNOMIAL 0x04c11db6
700
701 /* From FreeBSD */
702 /* XXX: optimize */
703 static int compute_mcast_idx(const uint8_t *ep)
704 {
705 uint32_t crc;
706 int carry, i, j;
707 uint8_t b;
708
709 crc = 0xffffffff;
710 for (i = 0; i < 6; i++) {
711 b = *ep++;
712 for (j = 0; j < 8; j++) {
713 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
714 crc <<= 1;
715 b >>= 1;
716 if (carry)
717 crc = ((crc ^ POLYNOMIAL) | carry);
718 }
719 }
720 return (crc >> 26);
721 }
722
723 static int rtl8139_RxWrap(RTL8139State *s)
724 {
725 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
726 return (s->RxConfig & (1 << 7));
727 }
728
729 static int rtl8139_receiver_enabled(RTL8139State *s)
730 {
731 return s->bChipCmdState & CmdRxEnb;
732 }
733
734 static int rtl8139_transmitter_enabled(RTL8139State *s)
735 {
736 return s->bChipCmdState & CmdTxEnb;
737 }
738
739 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
740 {
741 return s->CpCmd & CPlusRxEnb;
742 }
743
744 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
745 {
746 return s->CpCmd & CPlusTxEnb;
747 }
748
749 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
750 {
751 if (s->RxBufAddr + size > s->RxBufferSize)
752 {
753 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
754
755 /* write packet data */
756 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
757 {
758 DEBUG_PRINT((">>> RTL8139: rx packet wrapped in buffer at %d\n", size-wrapped));
759
760 if (size > wrapped)
761 {
762 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
763 buf, size-wrapped );
764 }
765
766 /* reset buffer pointer */
767 s->RxBufAddr = 0;
768
769 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr,
770 buf + (size-wrapped), wrapped );
771
772 s->RxBufAddr = wrapped;
773
774 return;
775 }
776 }
777
778 /* non-wrapping path or overwrapping enabled */
779 cpu_physical_memory_write( s->RxBuf + s->RxBufAddr, buf, size );
780
781 s->RxBufAddr += size;
782 }
783
784 #define MIN_BUF_SIZE 60
785 static inline target_phys_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
786 {
787 #if TARGET_PHYS_ADDR_BITS > 32
788 return low | ((target_phys_addr_t)high << 32);
789 #else
790 return low;
791 #endif
792 }
793
794 static int rtl8139_can_receive(VLANClientState *vc)
795 {
796 RTL8139State *s = vc->opaque;
797 int avail;
798
799 /* Receive (drop) packets if card is disabled. */
800 if (!s->clock_enabled)
801 return 1;
802 if (!rtl8139_receiver_enabled(s))
803 return 1;
804
805 if (rtl8139_cp_receiver_enabled(s)) {
806 /* ??? Flow control not implemented in c+ mode.
807 This is a hack to work around slirp deficiencies anyway. */
808 return 1;
809 } else {
810 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
811 s->RxBufferSize);
812 return (avail == 0 || avail >= 1514);
813 }
814 }
815
816 static ssize_t rtl8139_do_receive(VLANClientState *vc, const uint8_t *buf, size_t size_, int do_interrupt)
817 {
818 RTL8139State *s = vc->opaque;
819 int size = size_;
820
821 uint32_t packet_header = 0;
822
823 uint8_t buf1[60];
824 static const uint8_t broadcast_macaddr[6] =
825 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
826
827 DEBUG_PRINT((">>> RTL8139: received len=%d\n", size));
828
829 /* test if board clock is stopped */
830 if (!s->clock_enabled)
831 {
832 DEBUG_PRINT(("RTL8139: stopped ==========================\n"));
833 return -1;
834 }
835
836 /* first check if receiver is enabled */
837
838 if (!rtl8139_receiver_enabled(s))
839 {
840 DEBUG_PRINT(("RTL8139: receiver disabled ================\n"));
841 return -1;
842 }
843
844 /* XXX: check this */
845 if (s->RxConfig & AcceptAllPhys) {
846 /* promiscuous: receive all */
847 DEBUG_PRINT((">>> RTL8139: packet received in promiscuous mode\n"));
848
849 } else {
850 if (!memcmp(buf, broadcast_macaddr, 6)) {
851 /* broadcast address */
852 if (!(s->RxConfig & AcceptBroadcast))
853 {
854 DEBUG_PRINT((">>> RTL8139: broadcast packet rejected\n"));
855
856 /* update tally counter */
857 ++s->tally_counters.RxERR;
858
859 return size;
860 }
861
862 packet_header |= RxBroadcast;
863
864 DEBUG_PRINT((">>> RTL8139: broadcast packet received\n"));
865
866 /* update tally counter */
867 ++s->tally_counters.RxOkBrd;
868
869 } else if (buf[0] & 0x01) {
870 /* multicast */
871 if (!(s->RxConfig & AcceptMulticast))
872 {
873 DEBUG_PRINT((">>> RTL8139: multicast packet rejected\n"));
874
875 /* update tally counter */
876 ++s->tally_counters.RxERR;
877
878 return size;
879 }
880
881 int mcast_idx = compute_mcast_idx(buf);
882
883 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
884 {
885 DEBUG_PRINT((">>> RTL8139: multicast address mismatch\n"));
886
887 /* update tally counter */
888 ++s->tally_counters.RxERR;
889
890 return size;
891 }
892
893 packet_header |= RxMulticast;
894
895 DEBUG_PRINT((">>> RTL8139: multicast packet received\n"));
896
897 /* update tally counter */
898 ++s->tally_counters.RxOkMul;
899
900 } else if (s->phys[0] == buf[0] &&
901 s->phys[1] == buf[1] &&
902 s->phys[2] == buf[2] &&
903 s->phys[3] == buf[3] &&
904 s->phys[4] == buf[4] &&
905 s->phys[5] == buf[5]) {
906 /* match */
907 if (!(s->RxConfig & AcceptMyPhys))
908 {
909 DEBUG_PRINT((">>> RTL8139: rejecting physical address matching packet\n"));
910
911 /* update tally counter */
912 ++s->tally_counters.RxERR;
913
914 return size;
915 }
916
917 packet_header |= RxPhysical;
918
919 DEBUG_PRINT((">>> RTL8139: physical address matching packet received\n"));
920
921 /* update tally counter */
922 ++s->tally_counters.RxOkPhy;
923
924 } else {
925
926 DEBUG_PRINT((">>> RTL8139: unknown packet\n"));
927
928 /* update tally counter */
929 ++s->tally_counters.RxERR;
930
931 return size;
932 }
933 }
934
935 /* if too small buffer, then expand it */
936 if (size < MIN_BUF_SIZE) {
937 memcpy(buf1, buf, size);
938 memset(buf1 + size, 0, MIN_BUF_SIZE - size);
939 buf = buf1;
940 size = MIN_BUF_SIZE;
941 }
942
943 if (rtl8139_cp_receiver_enabled(s))
944 {
945 DEBUG_PRINT(("RTL8139: in C+ Rx mode ================\n"));
946
947 /* begin C+ receiver mode */
948
949 /* w0 ownership flag */
950 #define CP_RX_OWN (1<<31)
951 /* w0 end of ring flag */
952 #define CP_RX_EOR (1<<30)
953 /* w0 bits 0...12 : buffer size */
954 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
955 /* w1 tag available flag */
956 #define CP_RX_TAVA (1<<16)
957 /* w1 bits 0...15 : VLAN tag */
958 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
959 /* w2 low 32bit of Rx buffer ptr */
960 /* w3 high 32bit of Rx buffer ptr */
961
962 int descriptor = s->currCPlusRxDesc;
963 target_phys_addr_t cplus_rx_ring_desc;
964
965 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
966 cplus_rx_ring_desc += 16 * descriptor;
967
968 DEBUG_PRINT(("RTL8139: +++ C+ mode reading RX descriptor %d from host memory at %08x %08x = %016" PRIx64 "\n",
969 descriptor, s->RxRingAddrHI, s->RxRingAddrLO, (uint64_t)cplus_rx_ring_desc));
970
971 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
972
973 cpu_physical_memory_read(cplus_rx_ring_desc, (uint8_t *)&val, 4);
974 rxdw0 = le32_to_cpu(val);
975 cpu_physical_memory_read(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
976 rxdw1 = le32_to_cpu(val);
977 cpu_physical_memory_read(cplus_rx_ring_desc+8, (uint8_t *)&val, 4);
978 rxbufLO = le32_to_cpu(val);
979 cpu_physical_memory_read(cplus_rx_ring_desc+12, (uint8_t *)&val, 4);
980 rxbufHI = le32_to_cpu(val);
981
982 DEBUG_PRINT(("RTL8139: +++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
983 descriptor,
984 rxdw0, rxdw1, rxbufLO, rxbufHI));
985
986 if (!(rxdw0 & CP_RX_OWN))
987 {
988 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d is owned by host\n", descriptor));
989
990 s->IntrStatus |= RxOverflow;
991 ++s->RxMissed;
992
993 /* update tally counter */
994 ++s->tally_counters.RxERR;
995 ++s->tally_counters.MissPkt;
996
997 rtl8139_update_irq(s);
998 return size_;
999 }
1000
1001 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1002
1003 /* TODO: scatter the packet over available receive ring descriptors space */
1004
1005 if (size+4 > rx_space)
1006 {
1007 DEBUG_PRINT(("RTL8139: C+ Rx mode : descriptor %d size %d received %d + 4\n",
1008 descriptor, rx_space, size));
1009
1010 s->IntrStatus |= RxOverflow;
1011 ++s->RxMissed;
1012
1013 /* update tally counter */
1014 ++s->tally_counters.RxERR;
1015 ++s->tally_counters.MissPkt;
1016
1017 rtl8139_update_irq(s);
1018 return size_;
1019 }
1020
1021 target_phys_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1022
1023 /* receive/copy to target memory */
1024 cpu_physical_memory_write( rx_addr, buf, size );
1025
1026 if (s->CpCmd & CPlusRxChkSum)
1027 {
1028 /* do some packet checksumming */
1029 }
1030
1031 /* write checksum */
1032 #if defined (RTL8139_CALCULATE_RXCRC)
1033 val = cpu_to_le32(crc32(0, buf, size));
1034 #else
1035 val = 0;
1036 #endif
1037 cpu_physical_memory_write( rx_addr+size, (uint8_t *)&val, 4);
1038
1039 /* first segment of received packet flag */
1040 #define CP_RX_STATUS_FS (1<<29)
1041 /* last segment of received packet flag */
1042 #define CP_RX_STATUS_LS (1<<28)
1043 /* multicast packet flag */
1044 #define CP_RX_STATUS_MAR (1<<26)
1045 /* physical-matching packet flag */
1046 #define CP_RX_STATUS_PAM (1<<25)
1047 /* broadcast packet flag */
1048 #define CP_RX_STATUS_BAR (1<<24)
1049 /* runt packet flag */
1050 #define CP_RX_STATUS_RUNT (1<<19)
1051 /* crc error flag */
1052 #define CP_RX_STATUS_CRC (1<<18)
1053 /* IP checksum error flag */
1054 #define CP_RX_STATUS_IPF (1<<15)
1055 /* UDP checksum error flag */
1056 #define CP_RX_STATUS_UDPF (1<<14)
1057 /* TCP checksum error flag */
1058 #define CP_RX_STATUS_TCPF (1<<13)
1059
1060 /* transfer ownership to target */
1061 rxdw0 &= ~CP_RX_OWN;
1062
1063 /* set first segment bit */
1064 rxdw0 |= CP_RX_STATUS_FS;
1065
1066 /* set last segment bit */
1067 rxdw0 |= CP_RX_STATUS_LS;
1068
1069 /* set received packet type flags */
1070 if (packet_header & RxBroadcast)
1071 rxdw0 |= CP_RX_STATUS_BAR;
1072 if (packet_header & RxMulticast)
1073 rxdw0 |= CP_RX_STATUS_MAR;
1074 if (packet_header & RxPhysical)
1075 rxdw0 |= CP_RX_STATUS_PAM;
1076
1077 /* set received size */
1078 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1079 rxdw0 |= (size+4);
1080
1081 /* reset VLAN tag flag */
1082 rxdw1 &= ~CP_RX_TAVA;
1083
1084 /* update ring data */
1085 val = cpu_to_le32(rxdw0);
1086 cpu_physical_memory_write(cplus_rx_ring_desc, (uint8_t *)&val, 4);
1087 val = cpu_to_le32(rxdw1);
1088 cpu_physical_memory_write(cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1089
1090 /* update tally counter */
1091 ++s->tally_counters.RxOk;
1092
1093 /* seek to next Rx descriptor */
1094 if (rxdw0 & CP_RX_EOR)
1095 {
1096 s->currCPlusRxDesc = 0;
1097 }
1098 else
1099 {
1100 ++s->currCPlusRxDesc;
1101 }
1102
1103 DEBUG_PRINT(("RTL8139: done C+ Rx mode ----------------\n"));
1104
1105 }
1106 else
1107 {
1108 DEBUG_PRINT(("RTL8139: in ring Rx mode ================\n"));
1109
1110 /* begin ring receiver mode */
1111 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1112
1113 /* if receiver buffer is empty then avail == 0 */
1114
1115 if (avail != 0 && size + 8 >= avail)
1116 {
1117 DEBUG_PRINT(("rx overflow: rx buffer length %d head 0x%04x read 0x%04x === available 0x%04x need 0x%04x\n",
1118 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8));
1119
1120 s->IntrStatus |= RxOverflow;
1121 ++s->RxMissed;
1122 rtl8139_update_irq(s);
1123 return size_;
1124 }
1125
1126 packet_header |= RxStatusOK;
1127
1128 packet_header |= (((size+4) << 16) & 0xffff0000);
1129
1130 /* write header */
1131 uint32_t val = cpu_to_le32(packet_header);
1132
1133 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1134
1135 rtl8139_write_buffer(s, buf, size);
1136
1137 /* write checksum */
1138 #if defined (RTL8139_CALCULATE_RXCRC)
1139 val = cpu_to_le32(crc32(0, buf, size));
1140 #else
1141 val = 0;
1142 #endif
1143
1144 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1145
1146 /* correct buffer write pointer */
1147 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1148
1149 /* now we can signal we have received something */
1150
1151 DEBUG_PRINT((" received: rx buffer length %d head 0x%04x read 0x%04x\n",
1152 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
1153 }
1154
1155 s->IntrStatus |= RxOK;
1156
1157 if (do_interrupt)
1158 {
1159 rtl8139_update_irq(s);
1160 }
1161
1162 return size_;
1163 }
1164
1165 static ssize_t rtl8139_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1166 {
1167 return rtl8139_do_receive(vc, buf, size, 1);
1168 }
1169
1170 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1171 {
1172 s->RxBufferSize = bufferSize;
1173 s->RxBufPtr = 0;
1174 s->RxBufAddr = 0;
1175 }
1176
1177 static void rtl8139_reset(DeviceState *d)
1178 {
1179 RTL8139State *s = container_of(d, RTL8139State, dev.qdev);
1180 int i;
1181
1182 /* restore MAC address */
1183 memcpy(s->phys, s->conf.macaddr.a, 6);
1184
1185 /* reset interrupt mask */
1186 s->IntrStatus = 0;
1187 s->IntrMask = 0;
1188
1189 rtl8139_update_irq(s);
1190
1191 /* prepare eeprom */
1192 s->eeprom.contents[0] = 0x8129;
1193 #if 1
1194 // PCI vendor and device ID should be mirrored here
1195 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
1196 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
1197 #endif
1198
1199 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
1200 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
1201 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
1202
1203 /* mark all status registers as owned by host */
1204 for (i = 0; i < 4; ++i)
1205 {
1206 s->TxStatus[i] = TxHostOwns;
1207 }
1208
1209 s->currTxDesc = 0;
1210 s->currCPlusRxDesc = 0;
1211 s->currCPlusTxDesc = 0;
1212
1213 s->RxRingAddrLO = 0;
1214 s->RxRingAddrHI = 0;
1215
1216 s->RxBuf = 0;
1217
1218 rtl8139_reset_rxring(s, 8192);
1219
1220 /* ACK the reset */
1221 s->TxConfig = 0;
1222
1223 #if 0
1224 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1225 s->clock_enabled = 0;
1226 #else
1227 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1228 s->clock_enabled = 1;
1229 #endif
1230
1231 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1232
1233 /* set initial state data */
1234 s->Config0 = 0x0; /* No boot ROM */
1235 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1236 s->Config3 = 0x1; /* fast back-to-back compatible */
1237 s->Config5 = 0x0;
1238
1239 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1240
1241 s->CpCmd = 0x0; /* reset C+ mode */
1242 s->cplus_enabled = 0;
1243
1244
1245 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1246 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1247 s->BasicModeCtrl = 0x1000; // autonegotiation
1248
1249 s->BasicModeStatus = 0x7809;
1250 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1251 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1252 s->BasicModeStatus |= 0x0004; /* link is up */
1253
1254 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1255 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1256 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1257
1258 /* also reset timer and disable timer interrupt */
1259 s->TCTR = 0;
1260 s->TimerInt = 0;
1261 s->TCTR_base = 0;
1262
1263 /* reset tally counters */
1264 RTL8139TallyCounters_clear(&s->tally_counters);
1265 }
1266
1267 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1268 {
1269 counters->TxOk = 0;
1270 counters->RxOk = 0;
1271 counters->TxERR = 0;
1272 counters->RxERR = 0;
1273 counters->MissPkt = 0;
1274 counters->FAE = 0;
1275 counters->Tx1Col = 0;
1276 counters->TxMCol = 0;
1277 counters->RxOkPhy = 0;
1278 counters->RxOkBrd = 0;
1279 counters->RxOkMul = 0;
1280 counters->TxAbt = 0;
1281 counters->TxUndrn = 0;
1282 }
1283
1284 static void RTL8139TallyCounters_physical_memory_write(target_phys_addr_t tc_addr, RTL8139TallyCounters* tally_counters)
1285 {
1286 uint16_t val16;
1287 uint32_t val32;
1288 uint64_t val64;
1289
1290 val64 = cpu_to_le64(tally_counters->TxOk);
1291 cpu_physical_memory_write(tc_addr + 0, (uint8_t *)&val64, 8);
1292
1293 val64 = cpu_to_le64(tally_counters->RxOk);
1294 cpu_physical_memory_write(tc_addr + 8, (uint8_t *)&val64, 8);
1295
1296 val64 = cpu_to_le64(tally_counters->TxERR);
1297 cpu_physical_memory_write(tc_addr + 16, (uint8_t *)&val64, 8);
1298
1299 val32 = cpu_to_le32(tally_counters->RxERR);
1300 cpu_physical_memory_write(tc_addr + 24, (uint8_t *)&val32, 4);
1301
1302 val16 = cpu_to_le16(tally_counters->MissPkt);
1303 cpu_physical_memory_write(tc_addr + 28, (uint8_t *)&val16, 2);
1304
1305 val16 = cpu_to_le16(tally_counters->FAE);
1306 cpu_physical_memory_write(tc_addr + 30, (uint8_t *)&val16, 2);
1307
1308 val32 = cpu_to_le32(tally_counters->Tx1Col);
1309 cpu_physical_memory_write(tc_addr + 32, (uint8_t *)&val32, 4);
1310
1311 val32 = cpu_to_le32(tally_counters->TxMCol);
1312 cpu_physical_memory_write(tc_addr + 36, (uint8_t *)&val32, 4);
1313
1314 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1315 cpu_physical_memory_write(tc_addr + 40, (uint8_t *)&val64, 8);
1316
1317 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1318 cpu_physical_memory_write(tc_addr + 48, (uint8_t *)&val64, 8);
1319
1320 val32 = cpu_to_le32(tally_counters->RxOkMul);
1321 cpu_physical_memory_write(tc_addr + 56, (uint8_t *)&val32, 4);
1322
1323 val16 = cpu_to_le16(tally_counters->TxAbt);
1324 cpu_physical_memory_write(tc_addr + 60, (uint8_t *)&val16, 2);
1325
1326 val16 = cpu_to_le16(tally_counters->TxUndrn);
1327 cpu_physical_memory_write(tc_addr + 62, (uint8_t *)&val16, 2);
1328 }
1329
1330 /* Loads values of tally counters from VM state file */
1331 static void RTL8139TallyCounters_load(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1332 {
1333 qemu_get_be64s(f, &tally_counters->TxOk);
1334 qemu_get_be64s(f, &tally_counters->RxOk);
1335 qemu_get_be64s(f, &tally_counters->TxERR);
1336 qemu_get_be32s(f, &tally_counters->RxERR);
1337 qemu_get_be16s(f, &tally_counters->MissPkt);
1338 qemu_get_be16s(f, &tally_counters->FAE);
1339 qemu_get_be32s(f, &tally_counters->Tx1Col);
1340 qemu_get_be32s(f, &tally_counters->TxMCol);
1341 qemu_get_be64s(f, &tally_counters->RxOkPhy);
1342 qemu_get_be64s(f, &tally_counters->RxOkBrd);
1343 qemu_get_be32s(f, &tally_counters->RxOkMul);
1344 qemu_get_be16s(f, &tally_counters->TxAbt);
1345 qemu_get_be16s(f, &tally_counters->TxUndrn);
1346 }
1347
1348 /* Saves values of tally counters to VM state file */
1349 static void RTL8139TallyCounters_save(QEMUFile* f, RTL8139TallyCounters *tally_counters)
1350 {
1351 qemu_put_be64s(f, &tally_counters->TxOk);
1352 qemu_put_be64s(f, &tally_counters->RxOk);
1353 qemu_put_be64s(f, &tally_counters->TxERR);
1354 qemu_put_be32s(f, &tally_counters->RxERR);
1355 qemu_put_be16s(f, &tally_counters->MissPkt);
1356 qemu_put_be16s(f, &tally_counters->FAE);
1357 qemu_put_be32s(f, &tally_counters->Tx1Col);
1358 qemu_put_be32s(f, &tally_counters->TxMCol);
1359 qemu_put_be64s(f, &tally_counters->RxOkPhy);
1360 qemu_put_be64s(f, &tally_counters->RxOkBrd);
1361 qemu_put_be32s(f, &tally_counters->RxOkMul);
1362 qemu_put_be16s(f, &tally_counters->TxAbt);
1363 qemu_put_be16s(f, &tally_counters->TxUndrn);
1364 }
1365
1366 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1367 {
1368 val &= 0xff;
1369
1370 DEBUG_PRINT(("RTL8139: ChipCmd write val=0x%08x\n", val));
1371
1372 if (val & CmdReset)
1373 {
1374 DEBUG_PRINT(("RTL8139: ChipCmd reset\n"));
1375 rtl8139_reset(&s->dev.qdev);
1376 }
1377 if (val & CmdRxEnb)
1378 {
1379 DEBUG_PRINT(("RTL8139: ChipCmd enable receiver\n"));
1380
1381 s->currCPlusRxDesc = 0;
1382 }
1383 if (val & CmdTxEnb)
1384 {
1385 DEBUG_PRINT(("RTL8139: ChipCmd enable transmitter\n"));
1386
1387 s->currCPlusTxDesc = 0;
1388 }
1389
1390 /* mask unwriteable bits */
1391 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1392
1393 /* Deassert reset pin before next read */
1394 val &= ~CmdReset;
1395
1396 s->bChipCmdState = val;
1397 }
1398
1399 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1400 {
1401 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1402
1403 if (unread != 0)
1404 {
1405 DEBUG_PRINT(("RTL8139: receiver buffer data available 0x%04x\n", unread));
1406 return 0;
1407 }
1408
1409 DEBUG_PRINT(("RTL8139: receiver buffer is empty\n"));
1410
1411 return 1;
1412 }
1413
1414 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1415 {
1416 uint32_t ret = s->bChipCmdState;
1417
1418 if (rtl8139_RxBufferEmpty(s))
1419 ret |= RxBufEmpty;
1420
1421 DEBUG_PRINT(("RTL8139: ChipCmd read val=0x%04x\n", ret));
1422
1423 return ret;
1424 }
1425
1426 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1427 {
1428 val &= 0xffff;
1429
1430 DEBUG_PRINT(("RTL8139C+ command register write(w) val=0x%04x\n", val));
1431
1432 s->cplus_enabled = 1;
1433
1434 /* mask unwriteable bits */
1435 val = SET_MASKED(val, 0xff84, s->CpCmd);
1436
1437 s->CpCmd = val;
1438 }
1439
1440 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1441 {
1442 uint32_t ret = s->CpCmd;
1443
1444 DEBUG_PRINT(("RTL8139C+ command register read(w) val=0x%04x\n", ret));
1445
1446 return ret;
1447 }
1448
1449 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1450 {
1451 DEBUG_PRINT(("RTL8139C+ IntrMitigate register write(w) val=0x%04x\n", val));
1452 }
1453
1454 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1455 {
1456 uint32_t ret = 0;
1457
1458 DEBUG_PRINT(("RTL8139C+ IntrMitigate register read(w) val=0x%04x\n", ret));
1459
1460 return ret;
1461 }
1462
1463 static int rtl8139_config_writeable(RTL8139State *s)
1464 {
1465 if (s->Cfg9346 & Cfg9346_Unlock)
1466 {
1467 return 1;
1468 }
1469
1470 DEBUG_PRINT(("RTL8139: Configuration registers are write-protected\n"));
1471
1472 return 0;
1473 }
1474
1475 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1476 {
1477 val &= 0xffff;
1478
1479 DEBUG_PRINT(("RTL8139: BasicModeCtrl register write(w) val=0x%04x\n", val));
1480
1481 /* mask unwriteable bits */
1482 uint32_t mask = 0x4cff;
1483
1484 if (1 || !rtl8139_config_writeable(s))
1485 {
1486 /* Speed setting and autonegotiation enable bits are read-only */
1487 mask |= 0x3000;
1488 /* Duplex mode setting is read-only */
1489 mask |= 0x0100;
1490 }
1491
1492 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1493
1494 s->BasicModeCtrl = val;
1495 }
1496
1497 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1498 {
1499 uint32_t ret = s->BasicModeCtrl;
1500
1501 DEBUG_PRINT(("RTL8139: BasicModeCtrl register read(w) val=0x%04x\n", ret));
1502
1503 return ret;
1504 }
1505
1506 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1507 {
1508 val &= 0xffff;
1509
1510 DEBUG_PRINT(("RTL8139: BasicModeStatus register write(w) val=0x%04x\n", val));
1511
1512 /* mask unwriteable bits */
1513 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1514
1515 s->BasicModeStatus = val;
1516 }
1517
1518 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1519 {
1520 uint32_t ret = s->BasicModeStatus;
1521
1522 DEBUG_PRINT(("RTL8139: BasicModeStatus register read(w) val=0x%04x\n", ret));
1523
1524 return ret;
1525 }
1526
1527 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1528 {
1529 val &= 0xff;
1530
1531 DEBUG_PRINT(("RTL8139: Cfg9346 write val=0x%02x\n", val));
1532
1533 /* mask unwriteable bits */
1534 val = SET_MASKED(val, 0x31, s->Cfg9346);
1535
1536 uint32_t opmode = val & 0xc0;
1537 uint32_t eeprom_val = val & 0xf;
1538
1539 if (opmode == 0x80) {
1540 /* eeprom access */
1541 int eecs = (eeprom_val & 0x08)?1:0;
1542 int eesk = (eeprom_val & 0x04)?1:0;
1543 int eedi = (eeprom_val & 0x02)?1:0;
1544 prom9346_set_wire(s, eecs, eesk, eedi);
1545 } else if (opmode == 0x40) {
1546 /* Reset. */
1547 val = 0;
1548 rtl8139_reset(&s->dev.qdev);
1549 }
1550
1551 s->Cfg9346 = val;
1552 }
1553
1554 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1555 {
1556 uint32_t ret = s->Cfg9346;
1557
1558 uint32_t opmode = ret & 0xc0;
1559
1560 if (opmode == 0x80)
1561 {
1562 /* eeprom access */
1563 int eedo = prom9346_get_wire(s);
1564 if (eedo)
1565 {
1566 ret |= 0x01;
1567 }
1568 else
1569 {
1570 ret &= ~0x01;
1571 }
1572 }
1573
1574 DEBUG_PRINT(("RTL8139: Cfg9346 read val=0x%02x\n", ret));
1575
1576 return ret;
1577 }
1578
1579 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1580 {
1581 val &= 0xff;
1582
1583 DEBUG_PRINT(("RTL8139: Config0 write val=0x%02x\n", val));
1584
1585 if (!rtl8139_config_writeable(s))
1586 return;
1587
1588 /* mask unwriteable bits */
1589 val = SET_MASKED(val, 0xf8, s->Config0);
1590
1591 s->Config0 = val;
1592 }
1593
1594 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1595 {
1596 uint32_t ret = s->Config0;
1597
1598 DEBUG_PRINT(("RTL8139: Config0 read val=0x%02x\n", ret));
1599
1600 return ret;
1601 }
1602
1603 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1604 {
1605 val &= 0xff;
1606
1607 DEBUG_PRINT(("RTL8139: Config1 write val=0x%02x\n", val));
1608
1609 if (!rtl8139_config_writeable(s))
1610 return;
1611
1612 /* mask unwriteable bits */
1613 val = SET_MASKED(val, 0xC, s->Config1);
1614
1615 s->Config1 = val;
1616 }
1617
1618 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1619 {
1620 uint32_t ret = s->Config1;
1621
1622 DEBUG_PRINT(("RTL8139: Config1 read val=0x%02x\n", ret));
1623
1624 return ret;
1625 }
1626
1627 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1628 {
1629 val &= 0xff;
1630
1631 DEBUG_PRINT(("RTL8139: Config3 write val=0x%02x\n", val));
1632
1633 if (!rtl8139_config_writeable(s))
1634 return;
1635
1636 /* mask unwriteable bits */
1637 val = SET_MASKED(val, 0x8F, s->Config3);
1638
1639 s->Config3 = val;
1640 }
1641
1642 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1643 {
1644 uint32_t ret = s->Config3;
1645
1646 DEBUG_PRINT(("RTL8139: Config3 read val=0x%02x\n", ret));
1647
1648 return ret;
1649 }
1650
1651 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1652 {
1653 val &= 0xff;
1654
1655 DEBUG_PRINT(("RTL8139: Config4 write val=0x%02x\n", val));
1656
1657 if (!rtl8139_config_writeable(s))
1658 return;
1659
1660 /* mask unwriteable bits */
1661 val = SET_MASKED(val, 0x0a, s->Config4);
1662
1663 s->Config4 = val;
1664 }
1665
1666 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1667 {
1668 uint32_t ret = s->Config4;
1669
1670 DEBUG_PRINT(("RTL8139: Config4 read val=0x%02x\n", ret));
1671
1672 return ret;
1673 }
1674
1675 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1676 {
1677 val &= 0xff;
1678
1679 DEBUG_PRINT(("RTL8139: Config5 write val=0x%02x\n", val));
1680
1681 /* mask unwriteable bits */
1682 val = SET_MASKED(val, 0x80, s->Config5);
1683
1684 s->Config5 = val;
1685 }
1686
1687 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1688 {
1689 uint32_t ret = s->Config5;
1690
1691 DEBUG_PRINT(("RTL8139: Config5 read val=0x%02x\n", ret));
1692
1693 return ret;
1694 }
1695
1696 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1697 {
1698 if (!rtl8139_transmitter_enabled(s))
1699 {
1700 DEBUG_PRINT(("RTL8139: transmitter disabled; no TxConfig write val=0x%08x\n", val));
1701 return;
1702 }
1703
1704 DEBUG_PRINT(("RTL8139: TxConfig write val=0x%08x\n", val));
1705
1706 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1707
1708 s->TxConfig = val;
1709 }
1710
1711 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1712 {
1713 DEBUG_PRINT(("RTL8139C TxConfig via write(b) val=0x%02x\n", val));
1714
1715 uint32_t tc = s->TxConfig;
1716 tc &= 0xFFFFFF00;
1717 tc |= (val & 0x000000FF);
1718 rtl8139_TxConfig_write(s, tc);
1719 }
1720
1721 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1722 {
1723 uint32_t ret = s->TxConfig;
1724
1725 DEBUG_PRINT(("RTL8139: TxConfig read val=0x%04x\n", ret));
1726
1727 return ret;
1728 }
1729
1730 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1731 {
1732 DEBUG_PRINT(("RTL8139: RxConfig write val=0x%08x\n", val));
1733
1734 /* mask unwriteable bits */
1735 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1736
1737 s->RxConfig = val;
1738
1739 /* reset buffer size and read/write pointers */
1740 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1741
1742 DEBUG_PRINT(("RTL8139: RxConfig write reset buffer size to %d\n", s->RxBufferSize));
1743 }
1744
1745 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1746 {
1747 uint32_t ret = s->RxConfig;
1748
1749 DEBUG_PRINT(("RTL8139: RxConfig read val=0x%08x\n", ret));
1750
1751 return ret;
1752 }
1753
1754 static void rtl8139_transfer_frame(RTL8139State *s, const uint8_t *buf, int size, int do_interrupt)
1755 {
1756 if (!size)
1757 {
1758 DEBUG_PRINT(("RTL8139: +++ empty ethernet frame\n"));
1759 return;
1760 }
1761
1762 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1763 {
1764 DEBUG_PRINT(("RTL8139: +++ transmit loopback mode\n"));
1765 rtl8139_do_receive(s->vc, buf, size, do_interrupt);
1766 }
1767 else
1768 {
1769 qemu_send_packet(s->vc, buf, size);
1770 }
1771 }
1772
1773 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1774 {
1775 if (!rtl8139_transmitter_enabled(s))
1776 {
1777 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: transmitter disabled\n",
1778 descriptor));
1779 return 0;
1780 }
1781
1782 if (s->TxStatus[descriptor] & TxHostOwns)
1783 {
1784 DEBUG_PRINT(("RTL8139: +++ cannot transmit from descriptor %d: owned by host (%08x)\n",
1785 descriptor, s->TxStatus[descriptor]));
1786 return 0;
1787 }
1788
1789 DEBUG_PRINT(("RTL8139: +++ transmitting from descriptor %d\n", descriptor));
1790
1791 int txsize = s->TxStatus[descriptor] & 0x1fff;
1792 uint8_t txbuffer[0x2000];
1793
1794 DEBUG_PRINT(("RTL8139: +++ transmit reading %d bytes from host memory at 0x%08x\n",
1795 txsize, s->TxAddr[descriptor]));
1796
1797 cpu_physical_memory_read(s->TxAddr[descriptor], txbuffer, txsize);
1798
1799 /* Mark descriptor as transferred */
1800 s->TxStatus[descriptor] |= TxHostOwns;
1801 s->TxStatus[descriptor] |= TxStatOK;
1802
1803 rtl8139_transfer_frame(s, txbuffer, txsize, 0);
1804
1805 DEBUG_PRINT(("RTL8139: +++ transmitted %d bytes from descriptor %d\n", txsize, descriptor));
1806
1807 /* update interrupt */
1808 s->IntrStatus |= TxOK;
1809 rtl8139_update_irq(s);
1810
1811 return 1;
1812 }
1813
1814 /* structures and macros for task offloading */
1815 typedef struct ip_header
1816 {
1817 uint8_t ip_ver_len; /* version and header length */
1818 uint8_t ip_tos; /* type of service */
1819 uint16_t ip_len; /* total length */
1820 uint16_t ip_id; /* identification */
1821 uint16_t ip_off; /* fragment offset field */
1822 uint8_t ip_ttl; /* time to live */
1823 uint8_t ip_p; /* protocol */
1824 uint16_t ip_sum; /* checksum */
1825 uint32_t ip_src,ip_dst; /* source and dest address */
1826 } ip_header;
1827
1828 #define IP_HEADER_VERSION_4 4
1829 #define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1830 #define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1831
1832 typedef struct tcp_header
1833 {
1834 uint16_t th_sport; /* source port */
1835 uint16_t th_dport; /* destination port */
1836 uint32_t th_seq; /* sequence number */
1837 uint32_t th_ack; /* acknowledgement number */
1838 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1839 uint16_t th_win; /* window */
1840 uint16_t th_sum; /* checksum */
1841 uint16_t th_urp; /* urgent pointer */
1842 } tcp_header;
1843
1844 typedef struct udp_header
1845 {
1846 uint16_t uh_sport; /* source port */
1847 uint16_t uh_dport; /* destination port */
1848 uint16_t uh_ulen; /* udp length */
1849 uint16_t uh_sum; /* udp checksum */
1850 } udp_header;
1851
1852 typedef struct ip_pseudo_header
1853 {
1854 uint32_t ip_src;
1855 uint32_t ip_dst;
1856 uint8_t zeros;
1857 uint8_t ip_proto;
1858 uint16_t ip_payload;
1859 } ip_pseudo_header;
1860
1861 #define IP_PROTO_TCP 6
1862 #define IP_PROTO_UDP 17
1863
1864 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1865 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1866 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1867
1868 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1869
1870 #define TCP_FLAG_FIN 0x01
1871 #define TCP_FLAG_PUSH 0x08
1872
1873 /* produces ones' complement sum of data */
1874 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1875 {
1876 uint32_t result = 0;
1877
1878 for (; len > 1; data+=2, len-=2)
1879 {
1880 result += *(uint16_t*)data;
1881 }
1882
1883 /* add the remainder byte */
1884 if (len)
1885 {
1886 uint8_t odd[2] = {*data, 0};
1887 result += *(uint16_t*)odd;
1888 }
1889
1890 while (result>>16)
1891 result = (result & 0xffff) + (result >> 16);
1892
1893 return result;
1894 }
1895
1896 static uint16_t ip_checksum(void *data, size_t len)
1897 {
1898 return ~ones_complement_sum((uint8_t*)data, len);
1899 }
1900
1901 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1902 {
1903 if (!rtl8139_transmitter_enabled(s))
1904 {
1905 DEBUG_PRINT(("RTL8139: +++ C+ mode: transmitter disabled\n"));
1906 return 0;
1907 }
1908
1909 if (!rtl8139_cp_transmitter_enabled(s))
1910 {
1911 DEBUG_PRINT(("RTL8139: +++ C+ mode: C+ transmitter disabled\n"));
1912 return 0 ;
1913 }
1914
1915 int descriptor = s->currCPlusTxDesc;
1916
1917 target_phys_addr_t cplus_tx_ring_desc =
1918 rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1919
1920 /* Normal priority ring */
1921 cplus_tx_ring_desc += 16 * descriptor;
1922
1923 DEBUG_PRINT(("RTL8139: +++ C+ mode reading TX descriptor %d from host memory at %08x0x%08x = 0x%8lx\n",
1924 descriptor, s->TxAddr[1], s->TxAddr[0], cplus_tx_ring_desc));
1925
1926 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1927
1928 cpu_physical_memory_read(cplus_tx_ring_desc, (uint8_t *)&val, 4);
1929 txdw0 = le32_to_cpu(val);
1930 cpu_physical_memory_read(cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1931 txdw1 = le32_to_cpu(val);
1932 cpu_physical_memory_read(cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1933 txbufLO = le32_to_cpu(val);
1934 cpu_physical_memory_read(cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1935 txbufHI = le32_to_cpu(val);
1936
1937 DEBUG_PRINT(("RTL8139: +++ C+ mode TX descriptor %d %08x %08x %08x %08x\n",
1938 descriptor,
1939 txdw0, txdw1, txbufLO, txbufHI));
1940
1941 /* w0 ownership flag */
1942 #define CP_TX_OWN (1<<31)
1943 /* w0 end of ring flag */
1944 #define CP_TX_EOR (1<<30)
1945 /* first segment of received packet flag */
1946 #define CP_TX_FS (1<<29)
1947 /* last segment of received packet flag */
1948 #define CP_TX_LS (1<<28)
1949 /* large send packet flag */
1950 #define CP_TX_LGSEN (1<<27)
1951 /* large send MSS mask, bits 16...25 */
1952 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1953
1954 /* IP checksum offload flag */
1955 #define CP_TX_IPCS (1<<18)
1956 /* UDP checksum offload flag */
1957 #define CP_TX_UDPCS (1<<17)
1958 /* TCP checksum offload flag */
1959 #define CP_TX_TCPCS (1<<16)
1960
1961 /* w0 bits 0...15 : buffer size */
1962 #define CP_TX_BUFFER_SIZE (1<<16)
1963 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
1964 /* w1 tag available flag */
1965 #define CP_RX_TAGC (1<<17)
1966 /* w1 bits 0...15 : VLAN tag */
1967 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
1968 /* w2 low 32bit of Rx buffer ptr */
1969 /* w3 high 32bit of Rx buffer ptr */
1970
1971 /* set after transmission */
1972 /* FIFO underrun flag */
1973 #define CP_TX_STATUS_UNF (1<<25)
1974 /* transmit error summary flag, valid if set any of three below */
1975 #define CP_TX_STATUS_TES (1<<23)
1976 /* out-of-window collision flag */
1977 #define CP_TX_STATUS_OWC (1<<22)
1978 /* link failure flag */
1979 #define CP_TX_STATUS_LNKF (1<<21)
1980 /* excessive collisions flag */
1981 #define CP_TX_STATUS_EXC (1<<20)
1982
1983 if (!(txdw0 & CP_TX_OWN))
1984 {
1985 DEBUG_PRINT(("RTL8139: C+ Tx mode : descriptor %d is owned by host\n", descriptor));
1986 return 0 ;
1987 }
1988
1989 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : transmitting from descriptor %d\n", descriptor));
1990
1991 if (txdw0 & CP_TX_FS)
1992 {
1993 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is first segment descriptor\n", descriptor));
1994
1995 /* reset internal buffer offset */
1996 s->cplus_txbuffer_offset = 0;
1997 }
1998
1999 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
2000 target_phys_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
2001
2002 /* make sure we have enough space to assemble the packet */
2003 if (!s->cplus_txbuffer)
2004 {
2005 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2006 s->cplus_txbuffer = malloc(s->cplus_txbuffer_len);
2007 s->cplus_txbuffer_offset = 0;
2008
2009 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer allocated space %d\n", s->cplus_txbuffer_len));
2010 }
2011
2012 while (s->cplus_txbuffer && s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2013 {
2014 s->cplus_txbuffer_len += CP_TX_BUFFER_SIZE;
2015 s->cplus_txbuffer = qemu_realloc(s->cplus_txbuffer, s->cplus_txbuffer_len);
2016
2017 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission buffer space changed to %d\n", s->cplus_txbuffer_len));
2018 }
2019
2020 if (!s->cplus_txbuffer)
2021 {
2022 /* out of memory */
2023
2024 DEBUG_PRINT(("RTL8139: +++ C+ mode transmiter failed to reallocate %d bytes\n", s->cplus_txbuffer_len));
2025
2026 /* update tally counter */
2027 ++s->tally_counters.TxERR;
2028 ++s->tally_counters.TxAbt;
2029
2030 return 0;
2031 }
2032
2033 /* append more data to the packet */
2034
2035 DEBUG_PRINT(("RTL8139: +++ C+ mode transmit reading %d bytes from host memory at %016" PRIx64 " to offset %d\n",
2036 txsize, (uint64_t)tx_addr, s->cplus_txbuffer_offset));
2037
2038 cpu_physical_memory_read(tx_addr, s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2039 s->cplus_txbuffer_offset += txsize;
2040
2041 /* seek to next Rx descriptor */
2042 if (txdw0 & CP_TX_EOR)
2043 {
2044 s->currCPlusTxDesc = 0;
2045 }
2046 else
2047 {
2048 ++s->currCPlusTxDesc;
2049 if (s->currCPlusTxDesc >= 64)
2050 s->currCPlusTxDesc = 0;
2051 }
2052
2053 /* transfer ownership to target */
2054 txdw0 &= ~CP_RX_OWN;
2055
2056 /* reset error indicator bits */
2057 txdw0 &= ~CP_TX_STATUS_UNF;
2058 txdw0 &= ~CP_TX_STATUS_TES;
2059 txdw0 &= ~CP_TX_STATUS_OWC;
2060 txdw0 &= ~CP_TX_STATUS_LNKF;
2061 txdw0 &= ~CP_TX_STATUS_EXC;
2062
2063 /* update ring data */
2064 val = cpu_to_le32(txdw0);
2065 cpu_physical_memory_write(cplus_tx_ring_desc, (uint8_t *)&val, 4);
2066 // val = cpu_to_le32(txdw1);
2067 // cpu_physical_memory_write(cplus_tx_ring_desc+4, &val, 4);
2068
2069 /* Now decide if descriptor being processed is holding the last segment of packet */
2070 if (txdw0 & CP_TX_LS)
2071 {
2072 DEBUG_PRINT(("RTL8139: +++ C+ Tx mode : descriptor %d is last segment descriptor\n", descriptor));
2073
2074 /* can transfer fully assembled packet */
2075
2076 uint8_t *saved_buffer = s->cplus_txbuffer;
2077 int saved_size = s->cplus_txbuffer_offset;
2078 int saved_buffer_len = s->cplus_txbuffer_len;
2079
2080 /* reset the card space to protect from recursive call */
2081 s->cplus_txbuffer = NULL;
2082 s->cplus_txbuffer_offset = 0;
2083 s->cplus_txbuffer_len = 0;
2084
2085 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2086 {
2087 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task checksum\n"));
2088
2089 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
2090 #define ETH_HLEN 14
2091 #define ETH_MTU 1500
2092
2093 /* ip packet header */
2094 ip_header *ip = NULL;
2095 int hlen = 0;
2096 uint8_t ip_protocol = 0;
2097 uint16_t ip_data_len = 0;
2098
2099 uint8_t *eth_payload_data = NULL;
2100 size_t eth_payload_len = 0;
2101
2102 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2103 if (proto == ETH_P_IP)
2104 {
2105 DEBUG_PRINT(("RTL8139: +++ C+ mode has IP packet\n"));
2106
2107 /* not aligned */
2108 eth_payload_data = saved_buffer + ETH_HLEN;
2109 eth_payload_len = saved_size - ETH_HLEN;
2110
2111 ip = (ip_header*)eth_payload_data;
2112
2113 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2114 DEBUG_PRINT(("RTL8139: +++ C+ mode packet has bad IP version %d expected %d\n", IP_HEADER_VERSION(ip), IP_HEADER_VERSION_4));
2115 ip = NULL;
2116 } else {
2117 hlen = IP_HEADER_LENGTH(ip);
2118 ip_protocol = ip->ip_p;
2119 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
2120 }
2121 }
2122
2123 if (ip)
2124 {
2125 if (txdw0 & CP_TX_IPCS)
2126 {
2127 DEBUG_PRINT(("RTL8139: +++ C+ mode need IP checksum\n"));
2128
2129 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
2130 /* bad packet header len */
2131 /* or packet too short */
2132 }
2133 else
2134 {
2135 ip->ip_sum = 0;
2136 ip->ip_sum = ip_checksum(ip, hlen);
2137 DEBUG_PRINT(("RTL8139: +++ C+ mode IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2138 }
2139 }
2140
2141 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2142 {
2143 #if defined (DEBUG_RTL8139)
2144 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2145 #endif
2146 DEBUG_PRINT(("RTL8139: +++ C+ mode offloaded task TSO MTU=%d IP data %d frame data %d specified MSS=%d\n",
2147 ETH_MTU, ip_data_len, saved_size - ETH_HLEN, large_send_mss));
2148
2149 int tcp_send_offset = 0;
2150 int send_count = 0;
2151
2152 /* maximum IP header length is 60 bytes */
2153 uint8_t saved_ip_header[60];
2154
2155 /* save IP header template; data area is used in tcp checksum calculation */
2156 memcpy(saved_ip_header, eth_payload_data, hlen);
2157
2158 /* a placeholder for checksum calculation routine in tcp case */
2159 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2160 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2161
2162 /* pointer to TCP header */
2163 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2164
2165 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2166
2167 /* ETH_MTU = ip header len + tcp header len + payload */
2168 int tcp_data_len = ip_data_len - tcp_hlen;
2169 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2170
2171 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP data len %d TCP hlen %d TCP data len %d TCP chunk size %d\n",
2172 ip_data_len, tcp_hlen, tcp_data_len, tcp_chunk_size));
2173
2174 /* note the cycle below overwrites IP header data,
2175 but restores it from saved_ip_header before sending packet */
2176
2177 int is_last_frame = 0;
2178
2179 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2180 {
2181 uint16_t chunk_size = tcp_chunk_size;
2182
2183 /* check if this is the last frame */
2184 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2185 {
2186 is_last_frame = 1;
2187 chunk_size = tcp_data_len - tcp_send_offset;
2188 }
2189
2190 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP seqno %08x\n", be32_to_cpu(p_tcp_hdr->th_seq)));
2191
2192 /* add 4 TCP pseudoheader fields */
2193 /* copy IP source and destination fields */
2194 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2195
2196 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO calculating TCP checksum for packet with %d bytes data\n", tcp_hlen + chunk_size));
2197
2198 if (tcp_send_offset)
2199 {
2200 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2201 }
2202
2203 /* keep PUSH and FIN flags only for the last frame */
2204 if (!is_last_frame)
2205 {
2206 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2207 }
2208
2209 /* recalculate TCP checksum */
2210 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2211 p_tcpip_hdr->zeros = 0;
2212 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2213 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2214
2215 p_tcp_hdr->th_sum = 0;
2216
2217 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2218 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO TCP checksum %04x\n", tcp_checksum));
2219
2220 p_tcp_hdr->th_sum = tcp_checksum;
2221
2222 /* restore IP header */
2223 memcpy(eth_payload_data, saved_ip_header, hlen);
2224
2225 /* set IP data length and recalculate IP checksum */
2226 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2227
2228 /* increment IP id for subsequent frames */
2229 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2230
2231 ip->ip_sum = 0;
2232 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2233 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO IP header len=%d checksum=%04x\n", hlen, ip->ip_sum));
2234
2235 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2236 DEBUG_PRINT(("RTL8139: +++ C+ mode TSO transferring packet size %d\n", tso_send_size));
2237 rtl8139_transfer_frame(s, saved_buffer, tso_send_size, 0);
2238
2239 /* add transferred count to TCP sequence number */
2240 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2241 ++send_count;
2242 }
2243
2244 /* Stop sending this frame */
2245 saved_size = 0;
2246 }
2247 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2248 {
2249 DEBUG_PRINT(("RTL8139: +++ C+ mode need TCP or UDP checksum\n"));
2250
2251 /* maximum IP header length is 60 bytes */
2252 uint8_t saved_ip_header[60];
2253 memcpy(saved_ip_header, eth_payload_data, hlen);
2254
2255 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2256 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2257
2258 /* add 4 TCP pseudoheader fields */
2259 /* copy IP source and destination fields */
2260 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2261
2262 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2263 {
2264 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating TCP checksum for packet with %d bytes data\n", ip_data_len));
2265
2266 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2267 p_tcpip_hdr->zeros = 0;
2268 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2269 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2270
2271 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2272
2273 p_tcp_hdr->th_sum = 0;
2274
2275 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2276 DEBUG_PRINT(("RTL8139: +++ C+ mode TCP checksum %04x\n", tcp_checksum));
2277
2278 p_tcp_hdr->th_sum = tcp_checksum;
2279 }
2280 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2281 {
2282 DEBUG_PRINT(("RTL8139: +++ C+ mode calculating UDP checksum for packet with %d bytes data\n", ip_data_len));
2283
2284 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2285 p_udpip_hdr->zeros = 0;
2286 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2287 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2288
2289 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2290
2291 p_udp_hdr->uh_sum = 0;
2292
2293 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2294 DEBUG_PRINT(("RTL8139: +++ C+ mode UDP checksum %04x\n", udp_checksum));
2295
2296 p_udp_hdr->uh_sum = udp_checksum;
2297 }
2298
2299 /* restore IP header */
2300 memcpy(eth_payload_data, saved_ip_header, hlen);
2301 }
2302 }
2303 }
2304
2305 /* update tally counter */
2306 ++s->tally_counters.TxOk;
2307
2308 DEBUG_PRINT(("RTL8139: +++ C+ mode transmitting %d bytes packet\n", saved_size));
2309
2310 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1);
2311
2312 /* restore card space if there was no recursion and reset offset */
2313 if (!s->cplus_txbuffer)
2314 {
2315 s->cplus_txbuffer = saved_buffer;
2316 s->cplus_txbuffer_len = saved_buffer_len;
2317 s->cplus_txbuffer_offset = 0;
2318 }
2319 else
2320 {
2321 free(saved_buffer);
2322 }
2323 }
2324 else
2325 {
2326 DEBUG_PRINT(("RTL8139: +++ C+ mode transmission continue to next descriptor\n"));
2327 }
2328
2329 return 1;
2330 }
2331
2332 static void rtl8139_cplus_transmit(RTL8139State *s)
2333 {
2334 int txcount = 0;
2335
2336 while (rtl8139_cplus_transmit_one(s))
2337 {
2338 ++txcount;
2339 }
2340
2341 /* Mark transfer completed */
2342 if (!txcount)
2343 {
2344 DEBUG_PRINT(("RTL8139: C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2345 s->currCPlusTxDesc));
2346 }
2347 else
2348 {
2349 /* update interrupt status */
2350 s->IntrStatus |= TxOK;
2351 rtl8139_update_irq(s);
2352 }
2353 }
2354
2355 static void rtl8139_transmit(RTL8139State *s)
2356 {
2357 int descriptor = s->currTxDesc, txcount = 0;
2358
2359 /*while*/
2360 if (rtl8139_transmit_one(s, descriptor))
2361 {
2362 ++s->currTxDesc;
2363 s->currTxDesc %= 4;
2364 ++txcount;
2365 }
2366
2367 /* Mark transfer completed */
2368 if (!txcount)
2369 {
2370 DEBUG_PRINT(("RTL8139: transmitter queue stalled, current TxDesc = %d\n", s->currTxDesc));
2371 }
2372 }
2373
2374 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2375 {
2376
2377 int descriptor = txRegOffset/4;
2378
2379 /* handle C+ transmit mode register configuration */
2380
2381 if (s->cplus_enabled)
2382 {
2383 DEBUG_PRINT(("RTL8139C+ DTCCR write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2384
2385 /* handle Dump Tally Counters command */
2386 s->TxStatus[descriptor] = val;
2387
2388 if (descriptor == 0 && (val & 0x8))
2389 {
2390 target_phys_addr_t tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2391
2392 /* dump tally counters to specified memory location */
2393 RTL8139TallyCounters_physical_memory_write( tc_addr, &s->tally_counters);
2394
2395 /* mark dump completed */
2396 s->TxStatus[0] &= ~0x8;
2397 }
2398
2399 return;
2400 }
2401
2402 DEBUG_PRINT(("RTL8139: TxStatus write offset=0x%x val=0x%08x descriptor=%d\n", txRegOffset, val, descriptor));
2403
2404 /* mask only reserved bits */
2405 val &= ~0xff00c000; /* these bits are reset on write */
2406 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2407
2408 s->TxStatus[descriptor] = val;
2409
2410 /* attempt to start transmission */
2411 rtl8139_transmit(s);
2412 }
2413
2414 static uint32_t rtl8139_TxStatus_read(RTL8139State *s, uint32_t txRegOffset)
2415 {
2416 uint32_t ret = s->TxStatus[txRegOffset/4];
2417
2418 DEBUG_PRINT(("RTL8139: TxStatus read offset=0x%x val=0x%08x\n", txRegOffset, ret));
2419
2420 return ret;
2421 }
2422
2423 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2424 {
2425 uint16_t ret = 0;
2426
2427 /* Simulate TSAD, it is read only anyway */
2428
2429 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2430 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2431 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2432 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2433
2434 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2435 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2436 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2437 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2438
2439 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2440 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2441 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2442 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2443
2444 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2445 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2446 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2447 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2448
2449
2450 DEBUG_PRINT(("RTL8139: TSAD read val=0x%04x\n", ret));
2451
2452 return ret;
2453 }
2454
2455 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2456 {
2457 uint16_t ret = s->CSCR;
2458
2459 DEBUG_PRINT(("RTL8139: CSCR read val=0x%04x\n", ret));
2460
2461 return ret;
2462 }
2463
2464 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2465 {
2466 DEBUG_PRINT(("RTL8139: TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val));
2467
2468 s->TxAddr[txAddrOffset/4] = val;
2469 }
2470
2471 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2472 {
2473 uint32_t ret = s->TxAddr[txAddrOffset/4];
2474
2475 DEBUG_PRINT(("RTL8139: TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret));
2476
2477 return ret;
2478 }
2479
2480 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2481 {
2482 DEBUG_PRINT(("RTL8139: RxBufPtr write val=0x%04x\n", val));
2483
2484 /* this value is off by 16 */
2485 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2486
2487 DEBUG_PRINT((" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2488 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr));
2489 }
2490
2491 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2492 {
2493 /* this value is off by 16 */
2494 uint32_t ret = s->RxBufPtr - 0x10;
2495
2496 DEBUG_PRINT(("RTL8139: RxBufPtr read val=0x%04x\n", ret));
2497
2498 return ret;
2499 }
2500
2501 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2502 {
2503 /* this value is NOT off by 16 */
2504 uint32_t ret = s->RxBufAddr;
2505
2506 DEBUG_PRINT(("RTL8139: RxBufAddr read val=0x%04x\n", ret));
2507
2508 return ret;
2509 }
2510
2511 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2512 {
2513 DEBUG_PRINT(("RTL8139: RxBuf write val=0x%08x\n", val));
2514
2515 s->RxBuf = val;
2516
2517 /* may need to reset rxring here */
2518 }
2519
2520 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2521 {
2522 uint32_t ret = s->RxBuf;
2523
2524 DEBUG_PRINT(("RTL8139: RxBuf read val=0x%08x\n", ret));
2525
2526 return ret;
2527 }
2528
2529 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2530 {
2531 DEBUG_PRINT(("RTL8139: IntrMask write(w) val=0x%04x\n", val));
2532
2533 /* mask unwriteable bits */
2534 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2535
2536 s->IntrMask = val;
2537
2538 rtl8139_update_irq(s);
2539 }
2540
2541 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2542 {
2543 uint32_t ret = s->IntrMask;
2544
2545 DEBUG_PRINT(("RTL8139: IntrMask read(w) val=0x%04x\n", ret));
2546
2547 return ret;
2548 }
2549
2550 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2551 {
2552 DEBUG_PRINT(("RTL8139: IntrStatus write(w) val=0x%04x\n", val));
2553
2554 #if 0
2555
2556 /* writing to ISR has no effect */
2557
2558 return;
2559
2560 #else
2561 uint16_t newStatus = s->IntrStatus & ~val;
2562
2563 /* mask unwriteable bits */
2564 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2565
2566 /* writing 1 to interrupt status register bit clears it */
2567 s->IntrStatus = 0;
2568 rtl8139_update_irq(s);
2569
2570 s->IntrStatus = newStatus;
2571 rtl8139_update_irq(s);
2572 #endif
2573 }
2574
2575 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2576 {
2577 uint32_t ret = s->IntrStatus;
2578
2579 DEBUG_PRINT(("RTL8139: IntrStatus read(w) val=0x%04x\n", ret));
2580
2581 #if 0
2582
2583 /* reading ISR clears all interrupts */
2584 s->IntrStatus = 0;
2585
2586 rtl8139_update_irq(s);
2587
2588 #endif
2589
2590 return ret;
2591 }
2592
2593 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2594 {
2595 DEBUG_PRINT(("RTL8139: MultiIntr write(w) val=0x%04x\n", val));
2596
2597 /* mask unwriteable bits */
2598 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2599
2600 s->MultiIntr = val;
2601 }
2602
2603 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2604 {
2605 uint32_t ret = s->MultiIntr;
2606
2607 DEBUG_PRINT(("RTL8139: MultiIntr read(w) val=0x%04x\n", ret));
2608
2609 return ret;
2610 }
2611
2612 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2613 {
2614 RTL8139State *s = opaque;
2615
2616 addr &= 0xff;
2617
2618 switch (addr)
2619 {
2620 case MAC0 ... MAC0+5:
2621 s->phys[addr - MAC0] = val;
2622 break;
2623 case MAC0+6 ... MAC0+7:
2624 /* reserved */
2625 break;
2626 case MAR0 ... MAR0+7:
2627 s->mult[addr - MAR0] = val;
2628 break;
2629 case ChipCmd:
2630 rtl8139_ChipCmd_write(s, val);
2631 break;
2632 case Cfg9346:
2633 rtl8139_Cfg9346_write(s, val);
2634 break;
2635 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2636 rtl8139_TxConfig_writeb(s, val);
2637 break;
2638 case Config0:
2639 rtl8139_Config0_write(s, val);
2640 break;
2641 case Config1:
2642 rtl8139_Config1_write(s, val);
2643 break;
2644 case Config3:
2645 rtl8139_Config3_write(s, val);
2646 break;
2647 case Config4:
2648 rtl8139_Config4_write(s, val);
2649 break;
2650 case Config5:
2651 rtl8139_Config5_write(s, val);
2652 break;
2653 case MediaStatus:
2654 /* ignore */
2655 DEBUG_PRINT(("RTL8139: not implemented write(b) to MediaStatus val=0x%02x\n", val));
2656 break;
2657
2658 case HltClk:
2659 DEBUG_PRINT(("RTL8139: HltClk write val=0x%08x\n", val));
2660 if (val == 'R')
2661 {
2662 s->clock_enabled = 1;
2663 }
2664 else if (val == 'H')
2665 {
2666 s->clock_enabled = 0;
2667 }
2668 break;
2669
2670 case TxThresh:
2671 DEBUG_PRINT(("RTL8139C+ TxThresh write(b) val=0x%02x\n", val));
2672 s->TxThresh = val;
2673 break;
2674
2675 case TxPoll:
2676 DEBUG_PRINT(("RTL8139C+ TxPoll write(b) val=0x%02x\n", val));
2677 if (val & (1 << 7))
2678 {
2679 DEBUG_PRINT(("RTL8139C+ TxPoll high priority transmission (not implemented)\n"));
2680 //rtl8139_cplus_transmit(s);
2681 }
2682 if (val & (1 << 6))
2683 {
2684 DEBUG_PRINT(("RTL8139C+ TxPoll normal priority transmission\n"));
2685 rtl8139_cplus_transmit(s);
2686 }
2687
2688 break;
2689
2690 default:
2691 DEBUG_PRINT(("RTL8139: not implemented write(b) addr=0x%x val=0x%02x\n", addr, val));
2692 break;
2693 }
2694 }
2695
2696 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2697 {
2698 RTL8139State *s = opaque;
2699
2700 addr &= 0xfe;
2701
2702 switch (addr)
2703 {
2704 case IntrMask:
2705 rtl8139_IntrMask_write(s, val);
2706 break;
2707
2708 case IntrStatus:
2709 rtl8139_IntrStatus_write(s, val);
2710 break;
2711
2712 case MultiIntr:
2713 rtl8139_MultiIntr_write(s, val);
2714 break;
2715
2716 case RxBufPtr:
2717 rtl8139_RxBufPtr_write(s, val);
2718 break;
2719
2720 case BasicModeCtrl:
2721 rtl8139_BasicModeCtrl_write(s, val);
2722 break;
2723 case BasicModeStatus:
2724 rtl8139_BasicModeStatus_write(s, val);
2725 break;
2726 case NWayAdvert:
2727 DEBUG_PRINT(("RTL8139: NWayAdvert write(w) val=0x%04x\n", val));
2728 s->NWayAdvert = val;
2729 break;
2730 case NWayLPAR:
2731 DEBUG_PRINT(("RTL8139: forbidden NWayLPAR write(w) val=0x%04x\n", val));
2732 break;
2733 case NWayExpansion:
2734 DEBUG_PRINT(("RTL8139: NWayExpansion write(w) val=0x%04x\n", val));
2735 s->NWayExpansion = val;
2736 break;
2737
2738 case CpCmd:
2739 rtl8139_CpCmd_write(s, val);
2740 break;
2741
2742 case IntrMitigate:
2743 rtl8139_IntrMitigate_write(s, val);
2744 break;
2745
2746 default:
2747 DEBUG_PRINT(("RTL8139: ioport write(w) addr=0x%x val=0x%04x via write(b)\n", addr, val));
2748
2749 rtl8139_io_writeb(opaque, addr, val & 0xff);
2750 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2751 break;
2752 }
2753 }
2754
2755 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2756 {
2757 RTL8139State *s = opaque;
2758
2759 addr &= 0xfc;
2760
2761 switch (addr)
2762 {
2763 case RxMissed:
2764 DEBUG_PRINT(("RTL8139: RxMissed clearing on write\n"));
2765 s->RxMissed = 0;
2766 break;
2767
2768 case TxConfig:
2769 rtl8139_TxConfig_write(s, val);
2770 break;
2771
2772 case RxConfig:
2773 rtl8139_RxConfig_write(s, val);
2774 break;
2775
2776 case TxStatus0 ... TxStatus0+4*4-1:
2777 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2778 break;
2779
2780 case TxAddr0 ... TxAddr0+4*4-1:
2781 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2782 break;
2783
2784 case RxBuf:
2785 rtl8139_RxBuf_write(s, val);
2786 break;
2787
2788 case RxRingAddrLO:
2789 DEBUG_PRINT(("RTL8139: C+ RxRing low bits write val=0x%08x\n", val));
2790 s->RxRingAddrLO = val;
2791 break;
2792
2793 case RxRingAddrHI:
2794 DEBUG_PRINT(("RTL8139: C+ RxRing high bits write val=0x%08x\n", val));
2795 s->RxRingAddrHI = val;
2796 break;
2797
2798 case Timer:
2799 DEBUG_PRINT(("RTL8139: TCTR Timer reset on write\n"));
2800 s->TCTR = 0;
2801 s->TCTR_base = qemu_get_clock(vm_clock);
2802 break;
2803
2804 case FlashReg:
2805 DEBUG_PRINT(("RTL8139: FlashReg TimerInt write val=0x%08x\n", val));
2806 s->TimerInt = val;
2807 break;
2808
2809 default:
2810 DEBUG_PRINT(("RTL8139: ioport write(l) addr=0x%x val=0x%08x via write(b)\n", addr, val));
2811 rtl8139_io_writeb(opaque, addr, val & 0xff);
2812 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2813 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2814 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2815 break;
2816 }
2817 }
2818
2819 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2820 {
2821 RTL8139State *s = opaque;
2822 int ret;
2823
2824 addr &= 0xff;
2825
2826 switch (addr)
2827 {
2828 case MAC0 ... MAC0+5:
2829 ret = s->phys[addr - MAC0];
2830 break;
2831 case MAC0+6 ... MAC0+7:
2832 ret = 0;
2833 break;
2834 case MAR0 ... MAR0+7:
2835 ret = s->mult[addr - MAR0];
2836 break;
2837 case ChipCmd:
2838 ret = rtl8139_ChipCmd_read(s);
2839 break;
2840 case Cfg9346:
2841 ret = rtl8139_Cfg9346_read(s);
2842 break;
2843 case Config0:
2844 ret = rtl8139_Config0_read(s);
2845 break;
2846 case Config1:
2847 ret = rtl8139_Config1_read(s);
2848 break;
2849 case Config3:
2850 ret = rtl8139_Config3_read(s);
2851 break;
2852 case Config4:
2853 ret = rtl8139_Config4_read(s);
2854 break;
2855 case Config5:
2856 ret = rtl8139_Config5_read(s);
2857 break;
2858
2859 case MediaStatus:
2860 ret = 0xd0;
2861 DEBUG_PRINT(("RTL8139: MediaStatus read 0x%x\n", ret));
2862 break;
2863
2864 case HltClk:
2865 ret = s->clock_enabled;
2866 DEBUG_PRINT(("RTL8139: HltClk read 0x%x\n", ret));
2867 break;
2868
2869 case PCIRevisionID:
2870 ret = RTL8139_PCI_REVID;
2871 DEBUG_PRINT(("RTL8139: PCI Revision ID read 0x%x\n", ret));
2872 break;
2873
2874 case TxThresh:
2875 ret = s->TxThresh;
2876 DEBUG_PRINT(("RTL8139C+ TxThresh read(b) val=0x%02x\n", ret));
2877 break;
2878
2879 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
2880 ret = s->TxConfig >> 24;
2881 DEBUG_PRINT(("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret));
2882 break;
2883
2884 default:
2885 DEBUG_PRINT(("RTL8139: not implemented read(b) addr=0x%x\n", addr));
2886 ret = 0;
2887 break;
2888 }
2889
2890 return ret;
2891 }
2892
2893 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
2894 {
2895 RTL8139State *s = opaque;
2896 uint32_t ret;
2897
2898 addr &= 0xfe; /* mask lower bit */
2899
2900 switch (addr)
2901 {
2902 case IntrMask:
2903 ret = rtl8139_IntrMask_read(s);
2904 break;
2905
2906 case IntrStatus:
2907 ret = rtl8139_IntrStatus_read(s);
2908 break;
2909
2910 case MultiIntr:
2911 ret = rtl8139_MultiIntr_read(s);
2912 break;
2913
2914 case RxBufPtr:
2915 ret = rtl8139_RxBufPtr_read(s);
2916 break;
2917
2918 case RxBufAddr:
2919 ret = rtl8139_RxBufAddr_read(s);
2920 break;
2921
2922 case BasicModeCtrl:
2923 ret = rtl8139_BasicModeCtrl_read(s);
2924 break;
2925 case BasicModeStatus:
2926 ret = rtl8139_BasicModeStatus_read(s);
2927 break;
2928 case NWayAdvert:
2929 ret = s->NWayAdvert;
2930 DEBUG_PRINT(("RTL8139: NWayAdvert read(w) val=0x%04x\n", ret));
2931 break;
2932 case NWayLPAR:
2933 ret = s->NWayLPAR;
2934 DEBUG_PRINT(("RTL8139: NWayLPAR read(w) val=0x%04x\n", ret));
2935 break;
2936 case NWayExpansion:
2937 ret = s->NWayExpansion;
2938 DEBUG_PRINT(("RTL8139: NWayExpansion read(w) val=0x%04x\n", ret));
2939 break;
2940
2941 case CpCmd:
2942 ret = rtl8139_CpCmd_read(s);
2943 break;
2944
2945 case IntrMitigate:
2946 ret = rtl8139_IntrMitigate_read(s);
2947 break;
2948
2949 case TxSummary:
2950 ret = rtl8139_TSAD_read(s);
2951 break;
2952
2953 case CSCR:
2954 ret = rtl8139_CSCR_read(s);
2955 break;
2956
2957 default:
2958 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x via read(b)\n", addr));
2959
2960 ret = rtl8139_io_readb(opaque, addr);
2961 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
2962
2963 DEBUG_PRINT(("RTL8139: ioport read(w) addr=0x%x val=0x%04x\n", addr, ret));
2964 break;
2965 }
2966
2967 return ret;
2968 }
2969
2970 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
2971 {
2972 RTL8139State *s = opaque;
2973 uint32_t ret;
2974
2975 addr &= 0xfc; /* also mask low 2 bits */
2976
2977 switch (addr)
2978 {
2979 case RxMissed:
2980 ret = s->RxMissed;
2981
2982 DEBUG_PRINT(("RTL8139: RxMissed read val=0x%08x\n", ret));
2983 break;
2984
2985 case TxConfig:
2986 ret = rtl8139_TxConfig_read(s);
2987 break;
2988
2989 case RxConfig:
2990 ret = rtl8139_RxConfig_read(s);
2991 break;
2992
2993 case TxStatus0 ... TxStatus0+4*4-1:
2994 ret = rtl8139_TxStatus_read(s, addr-TxStatus0);
2995 break;
2996
2997 case TxAddr0 ... TxAddr0+4*4-1:
2998 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
2999 break;
3000
3001 case RxBuf:
3002 ret = rtl8139_RxBuf_read(s);
3003 break;
3004
3005 case RxRingAddrLO:
3006 ret = s->RxRingAddrLO;
3007 DEBUG_PRINT(("RTL8139: C+ RxRing low bits read val=0x%08x\n", ret));
3008 break;
3009
3010 case RxRingAddrHI:
3011 ret = s->RxRingAddrHI;
3012 DEBUG_PRINT(("RTL8139: C+ RxRing high bits read val=0x%08x\n", ret));
3013 break;
3014
3015 case Timer:
3016 ret = s->TCTR;
3017 DEBUG_PRINT(("RTL8139: TCTR Timer read val=0x%08x\n", ret));
3018 break;
3019
3020 case FlashReg:
3021 ret = s->TimerInt;
3022 DEBUG_PRINT(("RTL8139: FlashReg TimerInt read val=0x%08x\n", ret));
3023 break;
3024
3025 default:
3026 DEBUG_PRINT(("RTL8139: ioport read(l) addr=0x%x via read(b)\n", addr));
3027
3028 ret = rtl8139_io_readb(opaque, addr);
3029 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3030 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3031 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3032
3033 DEBUG_PRINT(("RTL8139: read(l) addr=0x%x val=%08x\n", addr, ret));
3034 break;
3035 }
3036
3037 return ret;
3038 }
3039
3040 /* */
3041
3042 static void rtl8139_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
3043 {
3044 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3045 }
3046
3047 static void rtl8139_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
3048 {
3049 rtl8139_io_writew(opaque, addr & 0xFF, val);
3050 }
3051
3052 static void rtl8139_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
3053 {
3054 rtl8139_io_writel(opaque, addr & 0xFF, val);
3055 }
3056
3057 static uint32_t rtl8139_ioport_readb(void *opaque, uint32_t addr)
3058 {
3059 return rtl8139_io_readb(opaque, addr & 0xFF);
3060 }
3061
3062 static uint32_t rtl8139_ioport_readw(void *opaque, uint32_t addr)
3063 {
3064 return rtl8139_io_readw(opaque, addr & 0xFF);
3065 }
3066
3067 static uint32_t rtl8139_ioport_readl(void *opaque, uint32_t addr)
3068 {
3069 return rtl8139_io_readl(opaque, addr & 0xFF);
3070 }
3071
3072 /* */
3073
3074 static void rtl8139_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
3075 {
3076 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3077 }
3078
3079 static void rtl8139_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
3080 {
3081 #ifdef TARGET_WORDS_BIGENDIAN
3082 val = bswap16(val);
3083 #endif
3084 rtl8139_io_writew(opaque, addr & 0xFF, val);
3085 }
3086
3087 static void rtl8139_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
3088 {
3089 #ifdef TARGET_WORDS_BIGENDIAN
3090 val = bswap32(val);
3091 #endif
3092 rtl8139_io_writel(opaque, addr & 0xFF, val);
3093 }
3094
3095 static uint32_t rtl8139_mmio_readb(void *opaque, target_phys_addr_t addr)
3096 {
3097 return rtl8139_io_readb(opaque, addr & 0xFF);
3098 }
3099
3100 static uint32_t rtl8139_mmio_readw(void *opaque, target_phys_addr_t addr)
3101 {
3102 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3103 #ifdef TARGET_WORDS_BIGENDIAN
3104 val = bswap16(val);
3105 #endif
3106 return val;
3107 }
3108
3109 static uint32_t rtl8139_mmio_readl(void *opaque, target_phys_addr_t addr)
3110 {
3111 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3112 #ifdef TARGET_WORDS_BIGENDIAN
3113 val = bswap32(val);
3114 #endif
3115 return val;
3116 }
3117
3118 /* */
3119
3120 static void rtl8139_save(QEMUFile* f,void* opaque)
3121 {
3122 RTL8139State* s = opaque;
3123 unsigned int i;
3124
3125 pci_device_save(&s->dev, f);
3126
3127 qemu_put_buffer(f, s->phys, 6);
3128 qemu_put_buffer(f, s->mult, 8);
3129
3130 for (i=0; i<4; ++i)
3131 {
3132 qemu_put_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3133 }
3134 for (i=0; i<4; ++i)
3135 {
3136 qemu_put_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3137 }
3138
3139 qemu_put_be32s(f, &s->RxBuf); /* Receive buffer */
3140 qemu_put_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3141 qemu_put_be32s(f, &s->RxBufPtr);
3142 qemu_put_be32s(f, &s->RxBufAddr);
3143
3144 qemu_put_be16s(f, &s->IntrStatus);
3145 qemu_put_be16s(f, &s->IntrMask);
3146
3147 qemu_put_be32s(f, &s->TxConfig);
3148 qemu_put_be32s(f, &s->RxConfig);
3149 qemu_put_be32s(f, &s->RxMissed);
3150 qemu_put_be16s(f, &s->CSCR);
3151
3152 qemu_put_8s(f, &s->Cfg9346);
3153 qemu_put_8s(f, &s->Config0);
3154 qemu_put_8s(f, &s->Config1);
3155 qemu_put_8s(f, &s->Config3);
3156 qemu_put_8s(f, &s->Config4);
3157 qemu_put_8s(f, &s->Config5);
3158
3159 qemu_put_8s(f, &s->clock_enabled);
3160 qemu_put_8s(f, &s->bChipCmdState);
3161
3162 qemu_put_be16s(f, &s->MultiIntr);
3163
3164 qemu_put_be16s(f, &s->BasicModeCtrl);
3165 qemu_put_be16s(f, &s->BasicModeStatus);
3166 qemu_put_be16s(f, &s->NWayAdvert);
3167 qemu_put_be16s(f, &s->NWayLPAR);
3168 qemu_put_be16s(f, &s->NWayExpansion);
3169
3170 qemu_put_be16s(f, &s->CpCmd);
3171 qemu_put_8s(f, &s->TxThresh);
3172
3173 i = 0;
3174 qemu_put_be32s(f, &i); /* unused. */
3175 qemu_put_buffer(f, s->conf.macaddr.a, 6);
3176 qemu_put_be32(f, s->rtl8139_mmio_io_addr);
3177
3178 qemu_put_be32s(f, &s->currTxDesc);
3179 qemu_put_be32s(f, &s->currCPlusRxDesc);
3180 qemu_put_be32s(f, &s->currCPlusTxDesc);
3181 qemu_put_be32s(f, &s->RxRingAddrLO);
3182 qemu_put_be32s(f, &s->RxRingAddrHI);
3183
3184 for (i=0; i<EEPROM_9346_SIZE; ++i)
3185 {
3186 qemu_put_be16s(f, &s->eeprom.contents[i]);
3187 }
3188 qemu_put_be32(f, s->eeprom.mode);
3189 qemu_put_be32s(f, &s->eeprom.tick);
3190 qemu_put_8s(f, &s->eeprom.address);
3191 qemu_put_be16s(f, &s->eeprom.input);
3192 qemu_put_be16s(f, &s->eeprom.output);
3193
3194 qemu_put_8s(f, &s->eeprom.eecs);
3195 qemu_put_8s(f, &s->eeprom.eesk);
3196 qemu_put_8s(f, &s->eeprom.eedi);
3197 qemu_put_8s(f, &s->eeprom.eedo);
3198
3199 qemu_put_be32s(f, &s->TCTR);
3200 qemu_put_be32s(f, &s->TimerInt);
3201 qemu_put_be64(f, s->TCTR_base);
3202
3203 RTL8139TallyCounters_save(f, &s->tally_counters);
3204
3205 qemu_put_be32s(f, &s->cplus_enabled);
3206 }
3207
3208 static int rtl8139_load(QEMUFile* f,void* opaque,int version_id)
3209 {
3210 RTL8139State* s = opaque;
3211 unsigned int i;
3212 int ret;
3213
3214 /* just 2 versions for now */
3215 if (version_id > 4)
3216 return -EINVAL;
3217
3218 if (version_id >= 3) {
3219 ret = pci_device_load(&s->dev, f);
3220 if (ret < 0)
3221 return ret;
3222 }
3223
3224 /* saved since version 1 */
3225 qemu_get_buffer(f, s->phys, 6);
3226 qemu_get_buffer(f, s->mult, 8);
3227
3228 for (i=0; i<4; ++i)
3229 {
3230 qemu_get_be32s(f, &s->TxStatus[i]); /* TxStatus0 */
3231 }
3232 for (i=0; i<4; ++i)
3233 {
3234 qemu_get_be32s(f, &s->TxAddr[i]); /* TxAddr0 */
3235 }
3236
3237 qemu_get_be32s(f, &s->RxBuf); /* Receive buffer */
3238 qemu_get_be32s(f, &s->RxBufferSize);/* internal variable, receive ring buffer size in C mode */
3239 qemu_get_be32s(f, &s->RxBufPtr);
3240 qemu_get_be32s(f, &s->RxBufAddr);
3241
3242 qemu_get_be16s(f, &s->IntrStatus);
3243 qemu_get_be16s(f, &s->IntrMask);
3244
3245 qemu_get_be32s(f, &s->TxConfig);
3246 qemu_get_be32s(f, &s->RxConfig);
3247 qemu_get_be32s(f, &s->RxMissed);
3248 qemu_get_be16s(f, &s->CSCR);
3249
3250 qemu_get_8s(f, &s->Cfg9346);
3251 qemu_get_8s(f, &s->Config0);
3252 qemu_get_8s(f, &s->Config1);
3253 qemu_get_8s(f, &s->Config3);
3254 qemu_get_8s(f, &s->Config4);
3255 qemu_get_8s(f, &s->Config5);
3256
3257 qemu_get_8s(f, &s->clock_enabled);
3258 qemu_get_8s(f, &s->bChipCmdState);
3259
3260 qemu_get_be16s(f, &s->MultiIntr);
3261
3262 qemu_get_be16s(f, &s->BasicModeCtrl);
3263 qemu_get_be16s(f, &s->BasicModeStatus);
3264 qemu_get_be16s(f, &s->NWayAdvert);
3265 qemu_get_be16s(f, &s->NWayLPAR);
3266 qemu_get_be16s(f, &s->NWayExpansion);
3267
3268 qemu_get_be16s(f, &s->CpCmd);
3269 qemu_get_8s(f, &s->TxThresh);
3270
3271 qemu_get_be32s(f, &i); /* unused. */
3272 qemu_get_buffer(f, s->conf.macaddr.a, 6);
3273 s->rtl8139_mmio_io_addr=qemu_get_be32(f);
3274
3275 qemu_get_be32s(f, &s->currTxDesc);
3276 qemu_get_be32s(f, &s->currCPlusRxDesc);
3277 qemu_get_be32s(f, &s->currCPlusTxDesc);
3278 qemu_get_be32s(f, &s->RxRingAddrLO);
3279 qemu_get_be32s(f, &s->RxRingAddrHI);
3280
3281 for (i=0; i<EEPROM_9346_SIZE; ++i)
3282 {
3283 qemu_get_be16s(f, &s->eeprom.contents[i]);
3284 }
3285 s->eeprom.mode=qemu_get_be32(f);
3286 qemu_get_be32s(f, &s->eeprom.tick);
3287 qemu_get_8s(f, &s->eeprom.address);
3288 qemu_get_be16s(f, &s->eeprom.input);
3289 qemu_get_be16s(f, &s->eeprom.output);
3290
3291 qemu_get_8s(f, &s->eeprom.eecs);
3292 qemu_get_8s(f, &s->eeprom.eesk);
3293 qemu_get_8s(f, &s->eeprom.eedi);
3294 qemu_get_8s(f, &s->eeprom.eedo);
3295
3296 /* saved since version 2 */
3297 if (version_id >= 2)
3298 {
3299 qemu_get_be32s(f, &s->TCTR);
3300 qemu_get_be32s(f, &s->TimerInt);
3301 s->TCTR_base=qemu_get_be64(f);
3302
3303 RTL8139TallyCounters_load(f, &s->tally_counters);
3304 }
3305 else
3306 {
3307 /* not saved, use default */
3308 s->TCTR = 0;
3309 s->TimerInt = 0;
3310 s->TCTR_base = 0;
3311
3312 RTL8139TallyCounters_clear(&s->tally_counters);
3313 }
3314
3315 if (version_id >= 4) {
3316 qemu_get_be32s(f, &s->cplus_enabled);
3317 } else {
3318 s->cplus_enabled = s->CpCmd != 0;
3319 }
3320
3321 return 0;
3322 }
3323
3324 /***********************************************************/
3325 /* PCI RTL8139 definitions */
3326
3327 static void rtl8139_mmio_map(PCIDevice *pci_dev, int region_num,
3328 uint32_t addr, uint32_t size, int type)
3329 {
3330 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3331
3332 cpu_register_physical_memory(addr + 0, 0x100, s->rtl8139_mmio_io_addr);
3333 }
3334
3335 static void rtl8139_ioport_map(PCIDevice *pci_dev, int region_num,
3336 uint32_t addr, uint32_t size, int type)
3337 {
3338 RTL8139State *s = DO_UPCAST(RTL8139State, dev, pci_dev);
3339
3340 register_ioport_write(addr, 0x100, 1, rtl8139_ioport_writeb, s);
3341 register_ioport_read( addr, 0x100, 1, rtl8139_ioport_readb, s);
3342
3343 register_ioport_write(addr, 0x100, 2, rtl8139_ioport_writew, s);
3344 register_ioport_read( addr, 0x100, 2, rtl8139_ioport_readw, s);
3345
3346 register_ioport_write(addr, 0x100, 4, rtl8139_ioport_writel, s);
3347 register_ioport_read( addr, 0x100, 4, rtl8139_ioport_readl, s);
3348 }
3349
3350 static CPUReadMemoryFunc * const rtl8139_mmio_read[3] = {
3351 rtl8139_mmio_readb,
3352 rtl8139_mmio_readw,
3353 rtl8139_mmio_readl,
3354 };
3355
3356 static CPUWriteMemoryFunc * const rtl8139_mmio_write[3] = {
3357 rtl8139_mmio_writeb,
3358 rtl8139_mmio_writew,
3359 rtl8139_mmio_writel,
3360 };
3361
3362 static inline int64_t rtl8139_get_next_tctr_time(RTL8139State *s, int64_t current_time)
3363 {
3364 int64_t next_time = current_time +
3365 muldiv64(1, get_ticks_per_sec(), PCI_FREQUENCY);
3366 if (next_time <= current_time)
3367 next_time = current_time + 1;
3368 return next_time;
3369 }
3370
3371 #ifdef RTL8139_ONBOARD_TIMER
3372 static void rtl8139_timer(void *opaque)
3373 {
3374 RTL8139State *s = opaque;
3375
3376 int is_timeout = 0;
3377
3378 int64_t curr_time;
3379 uint32_t curr_tick;
3380
3381 if (!s->clock_enabled)
3382 {
3383 DEBUG_PRINT(("RTL8139: >>> timer: clock is not running\n"));
3384 return;
3385 }
3386
3387 curr_time = qemu_get_clock(vm_clock);
3388
3389 curr_tick = muldiv64(curr_time - s->TCTR_base, PCI_FREQUENCY,
3390 get_ticks_per_sec());
3391
3392 if (s->TimerInt && curr_tick >= s->TimerInt)
3393 {
3394 if (s->TCTR < s->TimerInt || curr_tick < s->TCTR)
3395 {
3396 is_timeout = 1;
3397 }
3398 }
3399
3400 s->TCTR = curr_tick;
3401
3402 // DEBUG_PRINT(("RTL8139: >>> timer: tick=%08u\n", s->TCTR));
3403
3404 if (is_timeout)
3405 {
3406 DEBUG_PRINT(("RTL8139: >>> timer: timeout tick=%08u\n", s->TCTR));
3407 s->IntrStatus |= PCSTimeout;
3408 rtl8139_update_irq(s);
3409 }
3410
3411 qemu_mod_timer(s->timer,
3412 rtl8139_get_next_tctr_time(s,curr_time));
3413 }
3414 #endif /* RTL8139_ONBOARD_TIMER */
3415
3416 static void rtl8139_cleanup(VLANClientState *vc)
3417 {
3418 RTL8139State *s = vc->opaque;
3419
3420 s->vc = NULL;
3421 }
3422
3423 static int pci_rtl8139_uninit(PCIDevice *dev)
3424 {
3425 RTL8139State *s = DO_UPCAST(RTL8139State, dev, dev);
3426
3427 cpu_unregister_io_memory(s->rtl8139_mmio_io_addr);
3428 if (s->cplus_txbuffer) {
3429 qemu_free(s->cplus_txbuffer);
3430 s->cplus_txbuffer = NULL;
3431 }
3432 #ifdef RTL8139_ONBOARD_TIMER
3433 qemu_del_timer(s->timer);
3434 qemu_free_timer(s->timer);
3435 #endif
3436 unregister_savevm("rtl8139", s);
3437 qemu_del_vlan_client(s->vc);
3438 return 0;
3439 }
3440
3441 static int pci_rtl8139_init(PCIDevice *dev)
3442 {
3443 RTL8139State * s = DO_UPCAST(RTL8139State, dev, dev);
3444 uint8_t *pci_conf;
3445
3446 pci_conf = s->dev.config;
3447 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK);
3448 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8139);
3449 pci_conf[0x04] = 0x05; /* command = I/O space, Bus Master */
3450 pci_conf[0x08] = RTL8139_PCI_REVID; /* PCI revision ID; >=0x20 is for 8139C+ */
3451 pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET);
3452 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; /* header_type */
3453 pci_conf[0x3d] = 1; /* interrupt pin 0 */
3454 pci_conf[0x34] = 0xdc;
3455
3456 /* I/O handler for memory-mapped I/O */
3457 s->rtl8139_mmio_io_addr =
3458 cpu_register_io_memory(rtl8139_mmio_read, rtl8139_mmio_write, s);
3459
3460 pci_register_bar(&s->dev, 0, 0x100,
3461 PCI_ADDRESS_SPACE_IO, rtl8139_ioport_map);
3462
3463 pci_register_bar(&s->dev, 1, 0x100,
3464 PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map);
3465
3466 qemu_macaddr_default_if_unset(&s->conf.macaddr);
3467 rtl8139_reset(&s->dev.qdev);
3468 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_NIC,
3469 s->conf.vlan, s->conf.peer,
3470 dev->qdev.info->name, dev->qdev.id,
3471 rtl8139_can_receive, rtl8139_receive, NULL,
3472 NULL, rtl8139_cleanup, s);
3473 qemu_format_nic_info_str(s->vc, s->conf.macaddr.a);
3474
3475 s->cplus_txbuffer = NULL;
3476 s->cplus_txbuffer_len = 0;
3477 s->cplus_txbuffer_offset = 0;
3478
3479 register_savevm("rtl8139", -1, 4, rtl8139_save, rtl8139_load, s);
3480
3481 #ifdef RTL8139_ONBOARD_TIMER
3482 s->timer = qemu_new_timer(vm_clock, rtl8139_timer, s);
3483
3484 qemu_mod_timer(s->timer,
3485 rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock)));
3486 #endif /* RTL8139_ONBOARD_TIMER */
3487
3488 if (!dev->qdev.hotplugged) {
3489 static int loaded = 0;
3490 if (!loaded) {
3491 rom_add_option("pxe-rtl8139.bin");
3492 loaded = 1;
3493 }
3494 }
3495 return 0;
3496 }
3497
3498 static PCIDeviceInfo rtl8139_info = {
3499 .qdev.name = "rtl8139",
3500 .qdev.size = sizeof(RTL8139State),
3501 .qdev.reset = rtl8139_reset,
3502 .init = pci_rtl8139_init,
3503 .exit = pci_rtl8139_uninit,
3504 .qdev.props = (Property[]) {
3505 DEFINE_NIC_PROPERTIES(RTL8139State, conf),
3506 DEFINE_PROP_END_OF_LIST(),
3507 }
3508 };
3509
3510 static void rtl8139_register_devices(void)
3511 {
3512 pci_qdev_register(&rtl8139_info);
3513 }
3514
3515 device_init(rtl8139_register_devices)
Qemu copy for testing