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qapi-schema: dump-guest-memory: Improve text
[qemu/ar7.git] / hw / net / rtl8139.c
blobd192d573b4b5bd691983a789760bddb7091e16da
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 * 2010-Feb-04 Frediano Ziglio: Rewrote timer support using QEMU timer only
46 * when strictly needed (required for
47 * Darwin)
48 * 2011-Mar-22 Benjamin Poirier: Implemented VLAN offloading
49 */
50
51 /* For crc32 */
52 #include <zlib.h>
53
54 #include "hw/hw.h"
55 #include "hw/pci/pci.h"
56 #include "sysemu/dma.h"
57 #include "qemu/timer.h"
58 #include "net/net.h"
59 #include "net/eth.h"
60 #include "hw/loader.h"
61 #include "sysemu/sysemu.h"
62 #include "qemu/iov.h"
63
64 /* debug RTL8139 card */
65 //#define DEBUG_RTL8139 1
66
67 #define PCI_PERIOD 30 /* 30 ns period = 33.333333 Mhz frequency */
68
69 #define SET_MASKED(input, mask, curr) \
70 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) )
71
72 /* arg % size for size which is a power of 2 */
73 #define MOD2(input, size) \
74 ( ( input ) & ( size - 1 ) )
75
76 #define ETHER_TYPE_LEN 2
77 #define ETH_MTU 1500
78
79 #define VLAN_TCI_LEN 2
80 #define VLAN_HLEN (ETHER_TYPE_LEN + VLAN_TCI_LEN)
81
82 #if defined (DEBUG_RTL8139)
83 # define DPRINTF(fmt, ...) \
84 do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0)
85 #else
86 static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...)
87 {
88 return 0;
89 }
90 #endif
91
92 #define TYPE_RTL8139 "rtl8139"
93
94 #define RTL8139(obj) \
95 OBJECT_CHECK(RTL8139State, (obj), TYPE_RTL8139)
96
97 /* Symbolic offsets to registers. */
98 enum RTL8139_registers {
99 MAC0 = 0, /* Ethernet hardware address. */
100 MAR0 = 8, /* Multicast filter. */
101 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
102 /* Dump Tally Conter control register(64bit). C+ mode only */
103 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
104 RxBuf = 0x30,
105 ChipCmd = 0x37,
106 RxBufPtr = 0x38,
107 RxBufAddr = 0x3A,
108 IntrMask = 0x3C,
109 IntrStatus = 0x3E,
110 TxConfig = 0x40,
111 RxConfig = 0x44,
112 Timer = 0x48, /* A general-purpose counter. */
113 RxMissed = 0x4C, /* 24 bits valid, write clears. */
114 Cfg9346 = 0x50,
115 Config0 = 0x51,
116 Config1 = 0x52,
117 FlashReg = 0x54,
118 MediaStatus = 0x58,
119 Config3 = 0x59,
120 Config4 = 0x5A, /* absent on RTL-8139A */
121 HltClk = 0x5B,
122 MultiIntr = 0x5C,
123 PCIRevisionID = 0x5E,
124 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
125 BasicModeCtrl = 0x62,
126 BasicModeStatus = 0x64,
127 NWayAdvert = 0x66,
128 NWayLPAR = 0x68,
129 NWayExpansion = 0x6A,
130 /* Undocumented registers, but required for proper operation. */
131 FIFOTMS = 0x70, /* FIFO Control and test. */
132 CSCR = 0x74, /* Chip Status and Configuration Register. */
133 PARA78 = 0x78,
134 PARA7c = 0x7c, /* Magic transceiver parameter register. */
135 Config5 = 0xD8, /* absent on RTL-8139A */
136 /* C+ mode */
137 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
138 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
139 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
140 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
141 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
142 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
143 TxThresh = 0xEC, /* Early Tx threshold */
144 };
145
146 enum ClearBitMasks {
147 MultiIntrClear = 0xF000,
148 ChipCmdClear = 0xE2,
149 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
150 };
151
152 enum ChipCmdBits {
153 CmdReset = 0x10,
154 CmdRxEnb = 0x08,
155 CmdTxEnb = 0x04,
156 RxBufEmpty = 0x01,
157 };
158
159 /* C+ mode */
160 enum CplusCmdBits {
161 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
162 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
163 CPlusRxEnb = 0x0002,
164 CPlusTxEnb = 0x0001,
165 };
166
167 /* Interrupt register bits, using my own meaningful names. */
168 enum IntrStatusBits {
169 PCIErr = 0x8000,
170 PCSTimeout = 0x4000,
171 RxFIFOOver = 0x40,
172 RxUnderrun = 0x20, /* Packet Underrun / Link Change */
173 RxOverflow = 0x10,
174 TxErr = 0x08,
175 TxOK = 0x04,
176 RxErr = 0x02,
177 RxOK = 0x01,
178
179 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
180 };
181
182 enum TxStatusBits {
183 TxHostOwns = 0x2000,
184 TxUnderrun = 0x4000,
185 TxStatOK = 0x8000,
186 TxOutOfWindow = 0x20000000,
187 TxAborted = 0x40000000,
188 TxCarrierLost = 0x80000000,
189 };
190 enum RxStatusBits {
191 RxMulticast = 0x8000,
192 RxPhysical = 0x4000,
193 RxBroadcast = 0x2000,
194 RxBadSymbol = 0x0020,
195 RxRunt = 0x0010,
196 RxTooLong = 0x0008,
197 RxCRCErr = 0x0004,
198 RxBadAlign = 0x0002,
199 RxStatusOK = 0x0001,
200 };
201
202 /* Bits in RxConfig. */
203 enum rx_mode_bits {
204 AcceptErr = 0x20,
205 AcceptRunt = 0x10,
206 AcceptBroadcast = 0x08,
207 AcceptMulticast = 0x04,
208 AcceptMyPhys = 0x02,
209 AcceptAllPhys = 0x01,
210 };
211
212 /* Bits in TxConfig. */
213 enum tx_config_bits {
214
215 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
216 TxIFGShift = 24,
217 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
218 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
219 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
220 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
221
222 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
223 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
224 TxClearAbt = (1 << 0), /* Clear abort (WO) */
225 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
226 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
227
228 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
229 };
230
231
232 /* Transmit Status of All Descriptors (TSAD) Register */
233 enum TSAD_bits {
234 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
235 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
236 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
237 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
238 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
239 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
240 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
241 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
242 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
243 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
244 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
245 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
246 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
247 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
248 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
249 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
250 };
251
252
253 /* Bits in Config1 */
254 enum Config1Bits {
255 Cfg1_PM_Enable = 0x01,
256 Cfg1_VPD_Enable = 0x02,
257 Cfg1_PIO = 0x04,
258 Cfg1_MMIO = 0x08,
259 LWAKE = 0x10, /* not on 8139, 8139A */
260 Cfg1_Driver_Load = 0x20,
261 Cfg1_LED0 = 0x40,
262 Cfg1_LED1 = 0x80,
263 SLEEP = (1 << 1), /* only on 8139, 8139A */
264 PWRDN = (1 << 0), /* only on 8139, 8139A */
265 };
266
267 /* Bits in Config3 */
268 enum Config3Bits {
269 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
270 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
271 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
272 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
273 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
274 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
275 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
276 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
277 };
278
279 /* Bits in Config4 */
280 enum Config4Bits {
281 LWPTN = (1 << 2), /* not on 8139, 8139A */
282 };
283
284 /* Bits in Config5 */
285 enum Config5Bits {
286 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
287 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
288 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
289 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
290 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
291 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
292 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
293 };
294
295 enum RxConfigBits {
296 /* rx fifo threshold */
297 RxCfgFIFOShift = 13,
298 RxCfgFIFONone = (7 << RxCfgFIFOShift),
299
300 /* Max DMA burst */
301 RxCfgDMAShift = 8,
302 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
303
304 /* rx ring buffer length */
305 RxCfgRcv8K = 0,
306 RxCfgRcv16K = (1 << 11),
307 RxCfgRcv32K = (1 << 12),
308 RxCfgRcv64K = (1 << 11) | (1 << 12),
309
310 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
311 RxNoWrap = (1 << 7),
312 };
313
314 /* Twister tuning parameters from RealTek.
315 Completely undocumented, but required to tune bad links on some boards. */
316 /*
317 enum CSCRBits {
318 CSCR_LinkOKBit = 0x0400,
319 CSCR_LinkChangeBit = 0x0800,
320 CSCR_LinkStatusBits = 0x0f000,
321 CSCR_LinkDownOffCmd = 0x003c0,
322 CSCR_LinkDownCmd = 0x0f3c0,
323 */
324 enum CSCRBits {
325 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
326 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*/
327 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
328 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
329 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
330 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
331 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*/
332 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
333 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
334 };
335
336 enum Cfg9346Bits {
337 Cfg9346_Normal = 0x00,
338 Cfg9346_Autoload = 0x40,
339 Cfg9346_Programming = 0x80,
340 Cfg9346_ConfigWrite = 0xC0,
341 };
342
343 typedef enum {
344 CH_8139 = 0,
345 CH_8139_K,
346 CH_8139A,
347 CH_8139A_G,
348 CH_8139B,
349 CH_8130,
350 CH_8139C,
351 CH_8100,
352 CH_8100B_8139D,
353 CH_8101,
354 } chip_t;
355
356 enum chip_flags {
357 HasHltClk = (1 << 0),
358 HasLWake = (1 << 1),
359 };
360
361 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
362 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
363 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
364
365 #define RTL8139_PCI_REVID_8139 0x10
366 #define RTL8139_PCI_REVID_8139CPLUS 0x20
367
368 #define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
369
370 /* Size is 64 * 16bit words */
371 #define EEPROM_9346_ADDR_BITS 6
372 #define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
373 #define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
374
375 enum Chip9346Operation
376 {
377 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
378 Chip9346_op_read = 0x80, /* 10 AAAAAA */
379 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
380 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
381 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
382 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
383 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
384 };
385
386 enum Chip9346Mode
387 {
388 Chip9346_none = 0,
389 Chip9346_enter_command_mode,
390 Chip9346_read_command,
391 Chip9346_data_read, /* from output register */
392 Chip9346_data_write, /* to input register, then to contents at specified address */
393 Chip9346_data_write_all, /* to input register, then filling contents */
394 };
395
396 typedef struct EEprom9346
397 {
398 uint16_t contents[EEPROM_9346_SIZE];
399 int mode;
400 uint32_t tick;
401 uint8_t address;
402 uint16_t input;
403 uint16_t output;
404
405 uint8_t eecs;
406 uint8_t eesk;
407 uint8_t eedi;
408 uint8_t eedo;
409 } EEprom9346;
410
411 typedef struct RTL8139TallyCounters
412 {
413 /* Tally counters */
414 uint64_t TxOk;
415 uint64_t RxOk;
416 uint64_t TxERR;
417 uint32_t RxERR;
418 uint16_t MissPkt;
419 uint16_t FAE;
420 uint32_t Tx1Col;
421 uint32_t TxMCol;
422 uint64_t RxOkPhy;
423 uint64_t RxOkBrd;
424 uint32_t RxOkMul;
425 uint16_t TxAbt;
426 uint16_t TxUndrn;
427 } RTL8139TallyCounters;
428
429 /* Clears all tally counters */
430 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
431
432 typedef struct RTL8139State {
433 /*< private >*/
434 PCIDevice parent_obj;
435 /*< public >*/
436
437 uint8_t phys[8]; /* mac address */
438 uint8_t mult[8]; /* multicast mask array */
439
440 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
441 uint32_t TxAddr[4]; /* TxAddr0 */
442 uint32_t RxBuf; /* Receive buffer */
443 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
444 uint32_t RxBufPtr;
445 uint32_t RxBufAddr;
446
447 uint16_t IntrStatus;
448 uint16_t IntrMask;
449
450 uint32_t TxConfig;
451 uint32_t RxConfig;
452 uint32_t RxMissed;
453
454 uint16_t CSCR;
455
456 uint8_t Cfg9346;
457 uint8_t Config0;
458 uint8_t Config1;
459 uint8_t Config3;
460 uint8_t Config4;
461 uint8_t Config5;
462
463 uint8_t clock_enabled;
464 uint8_t bChipCmdState;
465
466 uint16_t MultiIntr;
467
468 uint16_t BasicModeCtrl;
469 uint16_t BasicModeStatus;
470 uint16_t NWayAdvert;
471 uint16_t NWayLPAR;
472 uint16_t NWayExpansion;
473
474 uint16_t CpCmd;
475 uint8_t TxThresh;
476
477 NICState *nic;
478 NICConf conf;
479
480 /* C ring mode */
481 uint32_t currTxDesc;
482
483 /* C+ mode */
484 uint32_t cplus_enabled;
485
486 uint32_t currCPlusRxDesc;
487 uint32_t currCPlusTxDesc;
488
489 uint32_t RxRingAddrLO;
490 uint32_t RxRingAddrHI;
491
492 EEprom9346 eeprom;
493
494 uint32_t TCTR;
495 uint32_t TimerInt;
496 int64_t TCTR_base;
497
498 /* Tally counters */
499 RTL8139TallyCounters tally_counters;
500
501 /* Non-persistent data */
502 uint8_t *cplus_txbuffer;
503 int cplus_txbuffer_len;
504 int cplus_txbuffer_offset;
505
506 /* PCI interrupt timer */
507 QEMUTimer *timer;
508
509 MemoryRegion bar_io;
510 MemoryRegion bar_mem;
511
512 /* Support migration to/from old versions */
513 int rtl8139_mmio_io_addr_dummy;
514 } RTL8139State;
515
516 /* Writes tally counters to memory via DMA */
517 static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr);
518
519 static void rtl8139_set_next_tctr_time(RTL8139State *s);
520
521 static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
522 {
523 DPRINTF("eeprom command 0x%02x\n", command);
524
525 switch (command & Chip9346_op_mask)
526 {
527 case Chip9346_op_read:
528 {
529 eeprom->address = command & EEPROM_9346_ADDR_MASK;
530 eeprom->output = eeprom->contents[eeprom->address];
531 eeprom->eedo = 0;
532 eeprom->tick = 0;
533 eeprom->mode = Chip9346_data_read;
534 DPRINTF("eeprom read from address 0x%02x data=0x%04x\n",
535 eeprom->address, eeprom->output);
536 }
537 break;
538
539 case Chip9346_op_write:
540 {
541 eeprom->address = command & EEPROM_9346_ADDR_MASK;
542 eeprom->input = 0;
543 eeprom->tick = 0;
544 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
545 DPRINTF("eeprom begin write to address 0x%02x\n",
546 eeprom->address);
547 }
548 break;
549 default:
550 eeprom->mode = Chip9346_none;
551 switch (command & Chip9346_op_ext_mask)
552 {
553 case Chip9346_op_write_enable:
554 DPRINTF("eeprom write enabled\n");
555 break;
556 case Chip9346_op_write_all:
557 DPRINTF("eeprom begin write all\n");
558 break;
559 case Chip9346_op_write_disable:
560 DPRINTF("eeprom write disabled\n");
561 break;
562 }
563 break;
564 }
565 }
566
567 static void prom9346_shift_clock(EEprom9346 *eeprom)
568 {
569 int bit = eeprom->eedi?1:0;
570
571 ++ eeprom->tick;
572
573 DPRINTF("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi,
574 eeprom->eedo);
575
576 switch (eeprom->mode)
577 {
578 case Chip9346_enter_command_mode:
579 if (bit)
580 {
581 eeprom->mode = Chip9346_read_command;
582 eeprom->tick = 0;
583 eeprom->input = 0;
584 DPRINTF("eeprom: +++ synchronized, begin command read\n");
585 }
586 break;
587
588 case Chip9346_read_command:
589 eeprom->input = (eeprom->input << 1) | (bit & 1);
590 if (eeprom->tick == 8)
591 {
592 prom9346_decode_command(eeprom, eeprom->input & 0xff);
593 }
594 break;
595
596 case Chip9346_data_read:
597 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
598 eeprom->output <<= 1;
599 if (eeprom->tick == 16)
600 {
601 #if 1
602 // the FreeBSD drivers (rl and re) don't explicitly toggle
603 // CS between reads (or does setting Cfg9346 to 0 count too?),
604 // so we need to enter wait-for-command state here
605 eeprom->mode = Chip9346_enter_command_mode;
606 eeprom->input = 0;
607 eeprom->tick = 0;
608
609 DPRINTF("eeprom: +++ end of read, awaiting next command\n");
610 #else
611 // original behaviour
612 ++eeprom->address;
613 eeprom->address &= EEPROM_9346_ADDR_MASK;
614 eeprom->output = eeprom->contents[eeprom->address];
615 eeprom->tick = 0;
616
617 DPRINTF("eeprom: +++ read next address 0x%02x data=0x%04x\n",
618 eeprom->address, eeprom->output);
619 #endif
620 }
621 break;
622
623 case Chip9346_data_write:
624 eeprom->input = (eeprom->input << 1) | (bit & 1);
625 if (eeprom->tick == 16)
626 {
627 DPRINTF("eeprom write to address 0x%02x data=0x%04x\n",
628 eeprom->address, eeprom->input);
629
630 eeprom->contents[eeprom->address] = eeprom->input;
631 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
632 eeprom->tick = 0;
633 eeprom->input = 0;
634 }
635 break;
636
637 case Chip9346_data_write_all:
638 eeprom->input = (eeprom->input << 1) | (bit & 1);
639 if (eeprom->tick == 16)
640 {
641 int i;
642 for (i = 0; i < EEPROM_9346_SIZE; i++)
643 {
644 eeprom->contents[i] = eeprom->input;
645 }
646 DPRINTF("eeprom filled with data=0x%04x\n", eeprom->input);
647
648 eeprom->mode = Chip9346_enter_command_mode;
649 eeprom->tick = 0;
650 eeprom->input = 0;
651 }
652 break;
653
654 default:
655 break;
656 }
657 }
658
659 static int prom9346_get_wire(RTL8139State *s)
660 {
661 EEprom9346 *eeprom = &s->eeprom;
662 if (!eeprom->eecs)
663 return 0;
664
665 return eeprom->eedo;
666 }
667
668 /* FIXME: This should be merged into/replaced by eeprom93xx.c. */
669 static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
670 {
671 EEprom9346 *eeprom = &s->eeprom;
672 uint8_t old_eecs = eeprom->eecs;
673 uint8_t old_eesk = eeprom->eesk;
674
675 eeprom->eecs = eecs;
676 eeprom->eesk = eesk;
677 eeprom->eedi = eedi;
678
679 DPRINTF("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs,
680 eeprom->eesk, eeprom->eedi, eeprom->eedo);
681
682 if (!old_eecs && eecs)
683 {
684 /* Synchronize start */
685 eeprom->tick = 0;
686 eeprom->input = 0;
687 eeprom->output = 0;
688 eeprom->mode = Chip9346_enter_command_mode;
689
690 DPRINTF("=== eeprom: begin access, enter command mode\n");
691 }
692
693 if (!eecs)
694 {
695 DPRINTF("=== eeprom: end access\n");
696 return;
697 }
698
699 if (!old_eesk && eesk)
700 {
701 /* SK front rules */
702 prom9346_shift_clock(eeprom);
703 }
704 }
705
706 static void rtl8139_update_irq(RTL8139State *s)
707 {
708 PCIDevice *d = PCI_DEVICE(s);
709 int isr;
710 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
711
712 DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus,
713 s->IntrMask);
714
715 pci_set_irq(d, (isr != 0));
716 }
717
718 static int rtl8139_RxWrap(RTL8139State *s)
719 {
720 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
721 return (s->RxConfig & (1 << 7));
722 }
723
724 static int rtl8139_receiver_enabled(RTL8139State *s)
725 {
726 return s->bChipCmdState & CmdRxEnb;
727 }
728
729 static int rtl8139_transmitter_enabled(RTL8139State *s)
730 {
731 return s->bChipCmdState & CmdTxEnb;
732 }
733
734 static int rtl8139_cp_receiver_enabled(RTL8139State *s)
735 {
736 return s->CpCmd & CPlusRxEnb;
737 }
738
739 static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
740 {
741 return s->CpCmd & CPlusTxEnb;
742 }
743
744 static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
745 {
746 PCIDevice *d = PCI_DEVICE(s);
747
748 if (s->RxBufAddr + size > s->RxBufferSize)
749 {
750 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
751
752 /* write packet data */
753 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
754 {
755 DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped);
756
757 if (size > wrapped)
758 {
759 pci_dma_write(d, s->RxBuf + s->RxBufAddr,
760 buf, size-wrapped);
761 }
762
763 /* reset buffer pointer */
764 s->RxBufAddr = 0;
765
766 pci_dma_write(d, s->RxBuf + s->RxBufAddr,
767 buf + (size-wrapped), wrapped);
768
769 s->RxBufAddr = wrapped;
770
771 return;
772 }
773 }
774
775 /* non-wrapping path or overwrapping enabled */
776 pci_dma_write(d, s->RxBuf + s->RxBufAddr, buf, size);
777
778 s->RxBufAddr += size;
779 }
780
781 #define MIN_BUF_SIZE 60
782 static inline dma_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
783 {
784 return low | ((uint64_t)high << 32);
785 }
786
787 /* Workaround for buggy guest driver such as linux who allocates rx
788 * rings after the receiver were enabled. */
789 static bool rtl8139_cp_rx_valid(RTL8139State *s)
790 {
791 return !(s->RxRingAddrLO == 0 && s->RxRingAddrHI == 0);
792 }
793
794 static int rtl8139_can_receive(NetClientState *nc)
795 {
796 RTL8139State *s = qemu_get_nic_opaque(nc);
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) && rtl8139_cp_rx_valid(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 || (s->IntrMask & RxOverflow));
813 }
814 }
815
816 static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt)
817 {
818 RTL8139State *s = qemu_get_nic_opaque(nc);
819 PCIDevice *d = PCI_DEVICE(s);
820 /* size is the length of the buffer passed to the driver */
821 int size = size_;
822 const uint8_t *dot1q_buf = NULL;
823
824 uint32_t packet_header = 0;
825
826 uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
827 static const uint8_t broadcast_macaddr[6] =
828 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
829
830 DPRINTF(">>> received len=%d\n", size);
831
832 /* test if board clock is stopped */
833 if (!s->clock_enabled)
834 {
835 DPRINTF("stopped ==========================\n");
836 return -1;
837 }
838
839 /* first check if receiver is enabled */
840
841 if (!rtl8139_receiver_enabled(s))
842 {
843 DPRINTF("receiver disabled ================\n");
844 return -1;
845 }
846
847 /* XXX: check this */
848 if (s->RxConfig & AcceptAllPhys) {
849 /* promiscuous: receive all */
850 DPRINTF(">>> packet received in promiscuous mode\n");
851
852 } else {
853 if (!memcmp(buf, broadcast_macaddr, 6)) {
854 /* broadcast address */
855 if (!(s->RxConfig & AcceptBroadcast))
856 {
857 DPRINTF(">>> broadcast packet rejected\n");
858
859 /* update tally counter */
860 ++s->tally_counters.RxERR;
861
862 return size;
863 }
864
865 packet_header |= RxBroadcast;
866
867 DPRINTF(">>> broadcast packet received\n");
868
869 /* update tally counter */
870 ++s->tally_counters.RxOkBrd;
871
872 } else if (buf[0] & 0x01) {
873 /* multicast */
874 if (!(s->RxConfig & AcceptMulticast))
875 {
876 DPRINTF(">>> multicast packet rejected\n");
877
878 /* update tally counter */
879 ++s->tally_counters.RxERR;
880
881 return size;
882 }
883
884 int mcast_idx = compute_mcast_idx(buf);
885
886 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
887 {
888 DPRINTF(">>> multicast address mismatch\n");
889
890 /* update tally counter */
891 ++s->tally_counters.RxERR;
892
893 return size;
894 }
895
896 packet_header |= RxMulticast;
897
898 DPRINTF(">>> multicast packet received\n");
899
900 /* update tally counter */
901 ++s->tally_counters.RxOkMul;
902
903 } else if (s->phys[0] == buf[0] &&
904 s->phys[1] == buf[1] &&
905 s->phys[2] == buf[2] &&
906 s->phys[3] == buf[3] &&
907 s->phys[4] == buf[4] &&
908 s->phys[5] == buf[5]) {
909 /* match */
910 if (!(s->RxConfig & AcceptMyPhys))
911 {
912 DPRINTF(">>> rejecting physical address matching packet\n");
913
914 /* update tally counter */
915 ++s->tally_counters.RxERR;
916
917 return size;
918 }
919
920 packet_header |= RxPhysical;
921
922 DPRINTF(">>> physical address matching packet received\n");
923
924 /* update tally counter */
925 ++s->tally_counters.RxOkPhy;
926
927 } else {
928
929 DPRINTF(">>> unknown packet\n");
930
931 /* update tally counter */
932 ++s->tally_counters.RxERR;
933
934 return size;
935 }
936 }
937
938 /* if too small buffer, then expand it
939 * Include some tailroom in case a vlan tag is later removed. */
940 if (size < MIN_BUF_SIZE + VLAN_HLEN) {
941 memcpy(buf1, buf, size);
942 memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
943 buf = buf1;
944 if (size < MIN_BUF_SIZE) {
945 size = MIN_BUF_SIZE;
946 }
947 }
948
949 if (rtl8139_cp_receiver_enabled(s))
950 {
951 if (!rtl8139_cp_rx_valid(s)) {
952 return size;
953 }
954
955 DPRINTF("in C+ Rx mode ================\n");
956
957 /* begin C+ receiver mode */
958
959 /* w0 ownership flag */
960 #define CP_RX_OWN (1<<31)
961 /* w0 end of ring flag */
962 #define CP_RX_EOR (1<<30)
963 /* w0 bits 0...12 : buffer size */
964 #define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
965 /* w1 tag available flag */
966 #define CP_RX_TAVA (1<<16)
967 /* w1 bits 0...15 : VLAN tag */
968 #define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
969 /* w2 low 32bit of Rx buffer ptr */
970 /* w3 high 32bit of Rx buffer ptr */
971
972 int descriptor = s->currCPlusRxDesc;
973 dma_addr_t cplus_rx_ring_desc;
974
975 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
976 cplus_rx_ring_desc += 16 * descriptor;
977
978 DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at "
979 "%08x %08x = "DMA_ADDR_FMT"\n", descriptor, s->RxRingAddrHI,
980 s->RxRingAddrLO, cplus_rx_ring_desc);
981
982 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
983
984 pci_dma_read(d, cplus_rx_ring_desc, &val, 4);
985 rxdw0 = le32_to_cpu(val);
986 pci_dma_read(d, cplus_rx_ring_desc+4, &val, 4);
987 rxdw1 = le32_to_cpu(val);
988 pci_dma_read(d, cplus_rx_ring_desc+8, &val, 4);
989 rxbufLO = le32_to_cpu(val);
990 pci_dma_read(d, cplus_rx_ring_desc+12, &val, 4);
991 rxbufHI = le32_to_cpu(val);
992
993 DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
994 descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI);
995
996 if (!(rxdw0 & CP_RX_OWN))
997 {
998 DPRINTF("C+ Rx mode : descriptor %d is owned by host\n",
999 descriptor);
1000
1001 s->IntrStatus |= RxOverflow;
1002 ++s->RxMissed;
1003
1004 /* update tally counter */
1005 ++s->tally_counters.RxERR;
1006 ++s->tally_counters.MissPkt;
1007
1008 rtl8139_update_irq(s);
1009 return size_;
1010 }
1011
1012 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1013
1014 /* write VLAN info to descriptor variables. */
1015 if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *)
1016 &buf[ETH_ALEN * 2]) == ETH_P_VLAN) {
1017 dot1q_buf = &buf[ETH_ALEN * 2];
1018 size -= VLAN_HLEN;
1019 /* if too small buffer, use the tailroom added duing expansion */
1020 if (size < MIN_BUF_SIZE) {
1021 size = MIN_BUF_SIZE;
1022 }
1023
1024 rxdw1 &= ~CP_RX_VLAN_TAG_MASK;
1025 /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */
1026 rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *)
1027 &dot1q_buf[ETHER_TYPE_LEN]);
1028
1029 DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n",
1030 be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN]));
1031 } else {
1032 /* reset VLAN tag flag */
1033 rxdw1 &= ~CP_RX_TAVA;
1034 }
1035
1036 /* TODO: scatter the packet over available receive ring descriptors space */
1037
1038 if (size+4 > rx_space)
1039 {
1040 DPRINTF("C+ Rx mode : descriptor %d size %d received %d + 4\n",
1041 descriptor, rx_space, size);
1042
1043 s->IntrStatus |= RxOverflow;
1044 ++s->RxMissed;
1045
1046 /* update tally counter */
1047 ++s->tally_counters.RxERR;
1048 ++s->tally_counters.MissPkt;
1049
1050 rtl8139_update_irq(s);
1051 return size_;
1052 }
1053
1054 dma_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
1055
1056 /* receive/copy to target memory */
1057 if (dot1q_buf) {
1058 pci_dma_write(d, rx_addr, buf, 2 * ETH_ALEN);
1059 pci_dma_write(d, rx_addr + 2 * ETH_ALEN,
1060 buf + 2 * ETH_ALEN + VLAN_HLEN,
1061 size - 2 * ETH_ALEN);
1062 } else {
1063 pci_dma_write(d, rx_addr, buf, size);
1064 }
1065
1066 if (s->CpCmd & CPlusRxChkSum)
1067 {
1068 /* do some packet checksumming */
1069 }
1070
1071 /* write checksum */
1072 val = cpu_to_le32(crc32(0, buf, size_));
1073 pci_dma_write(d, rx_addr+size, (uint8_t *)&val, 4);
1074
1075 /* first segment of received packet flag */
1076 #define CP_RX_STATUS_FS (1<<29)
1077 /* last segment of received packet flag */
1078 #define CP_RX_STATUS_LS (1<<28)
1079 /* multicast packet flag */
1080 #define CP_RX_STATUS_MAR (1<<26)
1081 /* physical-matching packet flag */
1082 #define CP_RX_STATUS_PAM (1<<25)
1083 /* broadcast packet flag */
1084 #define CP_RX_STATUS_BAR (1<<24)
1085 /* runt packet flag */
1086 #define CP_RX_STATUS_RUNT (1<<19)
1087 /* crc error flag */
1088 #define CP_RX_STATUS_CRC (1<<18)
1089 /* IP checksum error flag */
1090 #define CP_RX_STATUS_IPF (1<<15)
1091 /* UDP checksum error flag */
1092 #define CP_RX_STATUS_UDPF (1<<14)
1093 /* TCP checksum error flag */
1094 #define CP_RX_STATUS_TCPF (1<<13)
1095
1096 /* transfer ownership to target */
1097 rxdw0 &= ~CP_RX_OWN;
1098
1099 /* set first segment bit */
1100 rxdw0 |= CP_RX_STATUS_FS;
1101
1102 /* set last segment bit */
1103 rxdw0 |= CP_RX_STATUS_LS;
1104
1105 /* set received packet type flags */
1106 if (packet_header & RxBroadcast)
1107 rxdw0 |= CP_RX_STATUS_BAR;
1108 if (packet_header & RxMulticast)
1109 rxdw0 |= CP_RX_STATUS_MAR;
1110 if (packet_header & RxPhysical)
1111 rxdw0 |= CP_RX_STATUS_PAM;
1112
1113 /* set received size */
1114 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1115 rxdw0 |= (size+4);
1116
1117 /* update ring data */
1118 val = cpu_to_le32(rxdw0);
1119 pci_dma_write(d, cplus_rx_ring_desc, (uint8_t *)&val, 4);
1120 val = cpu_to_le32(rxdw1);
1121 pci_dma_write(d, cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
1122
1123 /* update tally counter */
1124 ++s->tally_counters.RxOk;
1125
1126 /* seek to next Rx descriptor */
1127 if (rxdw0 & CP_RX_EOR)
1128 {
1129 s->currCPlusRxDesc = 0;
1130 }
1131 else
1132 {
1133 ++s->currCPlusRxDesc;
1134 }
1135
1136 DPRINTF("done C+ Rx mode ----------------\n");
1137
1138 }
1139 else
1140 {
1141 DPRINTF("in ring Rx mode ================\n");
1142
1143 /* begin ring receiver mode */
1144 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1145
1146 /* if receiver buffer is empty then avail == 0 */
1147
1148 #define RX_ALIGN(x) (((x) + 3) & ~0x3)
1149
1150 if (avail != 0 && RX_ALIGN(size + 8) >= avail)
1151 {
1152 DPRINTF("rx overflow: rx buffer length %d head 0x%04x "
1153 "read 0x%04x === available 0x%04x need 0x%04x\n",
1154 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8);
1155
1156 s->IntrStatus |= RxOverflow;
1157 ++s->RxMissed;
1158 rtl8139_update_irq(s);
1159 return 0;
1160 }
1161
1162 packet_header |= RxStatusOK;
1163
1164 packet_header |= (((size+4) << 16) & 0xffff0000);
1165
1166 /* write header */
1167 uint32_t val = cpu_to_le32(packet_header);
1168
1169 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1170
1171 rtl8139_write_buffer(s, buf, size);
1172
1173 /* write checksum */
1174 val = cpu_to_le32(crc32(0, buf, size));
1175 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1176
1177 /* correct buffer write pointer */
1178 s->RxBufAddr = MOD2(RX_ALIGN(s->RxBufAddr), s->RxBufferSize);
1179
1180 /* now we can signal we have received something */
1181
1182 DPRINTF("received: rx buffer length %d head 0x%04x read 0x%04x\n",
1183 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
1184 }
1185
1186 s->IntrStatus |= RxOK;
1187
1188 if (do_interrupt)
1189 {
1190 rtl8139_update_irq(s);
1191 }
1192
1193 return size_;
1194 }
1195
1196 static ssize_t rtl8139_receive(NetClientState *nc, const uint8_t *buf, size_t size)
1197 {
1198 return rtl8139_do_receive(nc, buf, size, 1);
1199 }
1200
1201 static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1202 {
1203 s->RxBufferSize = bufferSize;
1204 s->RxBufPtr = 0;
1205 s->RxBufAddr = 0;
1206 }
1207
1208 static void rtl8139_reset(DeviceState *d)
1209 {
1210 RTL8139State *s = RTL8139(d);
1211 int i;
1212
1213 /* restore MAC address */
1214 memcpy(s->phys, s->conf.macaddr.a, 6);
1215 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys);
1216
1217 /* reset interrupt mask */
1218 s->IntrStatus = 0;
1219 s->IntrMask = 0;
1220
1221 rtl8139_update_irq(s);
1222
1223 /* mark all status registers as owned by host */
1224 for (i = 0; i < 4; ++i)
1225 {
1226 s->TxStatus[i] = TxHostOwns;
1227 }
1228
1229 s->currTxDesc = 0;
1230 s->currCPlusRxDesc = 0;
1231 s->currCPlusTxDesc = 0;
1232
1233 s->RxRingAddrLO = 0;
1234 s->RxRingAddrHI = 0;
1235
1236 s->RxBuf = 0;
1237
1238 rtl8139_reset_rxring(s, 8192);
1239
1240 /* ACK the reset */
1241 s->TxConfig = 0;
1242
1243 #if 0
1244 // s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1245 s->clock_enabled = 0;
1246 #else
1247 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
1248 s->clock_enabled = 1;
1249 #endif
1250
1251 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1252
1253 /* set initial state data */
1254 s->Config0 = 0x0; /* No boot ROM */
1255 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1256 s->Config3 = 0x1; /* fast back-to-back compatible */
1257 s->Config5 = 0x0;
1258
1259 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
1260
1261 s->CpCmd = 0x0; /* reset C+ mode */
1262 s->cplus_enabled = 0;
1263
1264
1265 // s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1266 // s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1267 s->BasicModeCtrl = 0x1000; // autonegotiation
1268
1269 s->BasicModeStatus = 0x7809;
1270 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1271 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
1272 /* preserve link state */
1273 s->BasicModeStatus |= qemu_get_queue(s->nic)->link_down ? 0 : 0x04;
1274
1275 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1276 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1277 s->NWayExpansion = 0x0001; /* autonegotiation supported */
1278
1279 /* also reset timer and disable timer interrupt */
1280 s->TCTR = 0;
1281 s->TimerInt = 0;
1282 s->TCTR_base = 0;
1283 rtl8139_set_next_tctr_time(s);
1284
1285 /* reset tally counters */
1286 RTL8139TallyCounters_clear(&s->tally_counters);
1287 }
1288
1289 static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
1290 {
1291 counters->TxOk = 0;
1292 counters->RxOk = 0;
1293 counters->TxERR = 0;
1294 counters->RxERR = 0;
1295 counters->MissPkt = 0;
1296 counters->FAE = 0;
1297 counters->Tx1Col = 0;
1298 counters->TxMCol = 0;
1299 counters->RxOkPhy = 0;
1300 counters->RxOkBrd = 0;
1301 counters->RxOkMul = 0;
1302 counters->TxAbt = 0;
1303 counters->TxUndrn = 0;
1304 }
1305
1306 static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr)
1307 {
1308 PCIDevice *d = PCI_DEVICE(s);
1309 RTL8139TallyCounters *tally_counters = &s->tally_counters;
1310 uint16_t val16;
1311 uint32_t val32;
1312 uint64_t val64;
1313
1314 val64 = cpu_to_le64(tally_counters->TxOk);
1315 pci_dma_write(d, tc_addr + 0, (uint8_t *)&val64, 8);
1316
1317 val64 = cpu_to_le64(tally_counters->RxOk);
1318 pci_dma_write(d, tc_addr + 8, (uint8_t *)&val64, 8);
1319
1320 val64 = cpu_to_le64(tally_counters->TxERR);
1321 pci_dma_write(d, tc_addr + 16, (uint8_t *)&val64, 8);
1322
1323 val32 = cpu_to_le32(tally_counters->RxERR);
1324 pci_dma_write(d, tc_addr + 24, (uint8_t *)&val32, 4);
1325
1326 val16 = cpu_to_le16(tally_counters->MissPkt);
1327 pci_dma_write(d, tc_addr + 28, (uint8_t *)&val16, 2);
1328
1329 val16 = cpu_to_le16(tally_counters->FAE);
1330 pci_dma_write(d, tc_addr + 30, (uint8_t *)&val16, 2);
1331
1332 val32 = cpu_to_le32(tally_counters->Tx1Col);
1333 pci_dma_write(d, tc_addr + 32, (uint8_t *)&val32, 4);
1334
1335 val32 = cpu_to_le32(tally_counters->TxMCol);
1336 pci_dma_write(d, tc_addr + 36, (uint8_t *)&val32, 4);
1337
1338 val64 = cpu_to_le64(tally_counters->RxOkPhy);
1339 pci_dma_write(d, tc_addr + 40, (uint8_t *)&val64, 8);
1340
1341 val64 = cpu_to_le64(tally_counters->RxOkBrd);
1342 pci_dma_write(d, tc_addr + 48, (uint8_t *)&val64, 8);
1343
1344 val32 = cpu_to_le32(tally_counters->RxOkMul);
1345 pci_dma_write(d, tc_addr + 56, (uint8_t *)&val32, 4);
1346
1347 val16 = cpu_to_le16(tally_counters->TxAbt);
1348 pci_dma_write(d, tc_addr + 60, (uint8_t *)&val16, 2);
1349
1350 val16 = cpu_to_le16(tally_counters->TxUndrn);
1351 pci_dma_write(d, tc_addr + 62, (uint8_t *)&val16, 2);
1352 }
1353
1354 /* Loads values of tally counters from VM state file */
1355
1356 static const VMStateDescription vmstate_tally_counters = {
1357 .name = "tally_counters",
1358 .version_id = 1,
1359 .minimum_version_id = 1,
1360 .fields = (VMStateField[]) {
1361 VMSTATE_UINT64(TxOk, RTL8139TallyCounters),
1362 VMSTATE_UINT64(RxOk, RTL8139TallyCounters),
1363 VMSTATE_UINT64(TxERR, RTL8139TallyCounters),
1364 VMSTATE_UINT32(RxERR, RTL8139TallyCounters),
1365 VMSTATE_UINT16(MissPkt, RTL8139TallyCounters),
1366 VMSTATE_UINT16(FAE, RTL8139TallyCounters),
1367 VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters),
1368 VMSTATE_UINT32(TxMCol, RTL8139TallyCounters),
1369 VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters),
1370 VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters),
1371 VMSTATE_UINT16(TxAbt, RTL8139TallyCounters),
1372 VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters),
1373 VMSTATE_END_OF_LIST()
1374 }
1375 };
1376
1377 static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1378 {
1379 DeviceState *d = DEVICE(s);
1380
1381 val &= 0xff;
1382
1383 DPRINTF("ChipCmd write val=0x%08x\n", val);
1384
1385 if (val & CmdReset)
1386 {
1387 DPRINTF("ChipCmd reset\n");
1388 rtl8139_reset(d);
1389 }
1390 if (val & CmdRxEnb)
1391 {
1392 DPRINTF("ChipCmd enable receiver\n");
1393
1394 s->currCPlusRxDesc = 0;
1395 }
1396 if (val & CmdTxEnb)
1397 {
1398 DPRINTF("ChipCmd enable transmitter\n");
1399
1400 s->currCPlusTxDesc = 0;
1401 }
1402
1403 /* mask unwritable bits */
1404 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1405
1406 /* Deassert reset pin before next read */
1407 val &= ~CmdReset;
1408
1409 s->bChipCmdState = val;
1410 }
1411
1412 static int rtl8139_RxBufferEmpty(RTL8139State *s)
1413 {
1414 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1415
1416 if (unread != 0)
1417 {
1418 DPRINTF("receiver buffer data available 0x%04x\n", unread);
1419 return 0;
1420 }
1421
1422 DPRINTF("receiver buffer is empty\n");
1423
1424 return 1;
1425 }
1426
1427 static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1428 {
1429 uint32_t ret = s->bChipCmdState;
1430
1431 if (rtl8139_RxBufferEmpty(s))
1432 ret |= RxBufEmpty;
1433
1434 DPRINTF("ChipCmd read val=0x%04x\n", ret);
1435
1436 return ret;
1437 }
1438
1439 static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1440 {
1441 val &= 0xffff;
1442
1443 DPRINTF("C+ command register write(w) val=0x%04x\n", val);
1444
1445 s->cplus_enabled = 1;
1446
1447 /* mask unwritable bits */
1448 val = SET_MASKED(val, 0xff84, s->CpCmd);
1449
1450 s->CpCmd = val;
1451 }
1452
1453 static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1454 {
1455 uint32_t ret = s->CpCmd;
1456
1457 DPRINTF("C+ command register read(w) val=0x%04x\n", ret);
1458
1459 return ret;
1460 }
1461
1462 static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1463 {
1464 DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val);
1465 }
1466
1467 static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1468 {
1469 uint32_t ret = 0;
1470
1471 DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret);
1472
1473 return ret;
1474 }
1475
1476 static int rtl8139_config_writable(RTL8139State *s)
1477 {
1478 if ((s->Cfg9346 & Chip9346_op_mask) == Cfg9346_ConfigWrite)
1479 {
1480 return 1;
1481 }
1482
1483 DPRINTF("Configuration registers are write-protected\n");
1484
1485 return 0;
1486 }
1487
1488 static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1489 {
1490 val &= 0xffff;
1491
1492 DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val);
1493
1494 /* mask unwritable bits */
1495 uint32_t mask = 0x4cff;
1496
1497 if (1 || !rtl8139_config_writable(s))
1498 {
1499 /* Speed setting and autonegotiation enable bits are read-only */
1500 mask |= 0x3000;
1501 /* Duplex mode setting is read-only */
1502 mask |= 0x0100;
1503 }
1504
1505 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1506
1507 s->BasicModeCtrl = val;
1508 }
1509
1510 static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1511 {
1512 uint32_t ret = s->BasicModeCtrl;
1513
1514 DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret);
1515
1516 return ret;
1517 }
1518
1519 static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1520 {
1521 val &= 0xffff;
1522
1523 DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val);
1524
1525 /* mask unwritable bits */
1526 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1527
1528 s->BasicModeStatus = val;
1529 }
1530
1531 static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1532 {
1533 uint32_t ret = s->BasicModeStatus;
1534
1535 DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret);
1536
1537 return ret;
1538 }
1539
1540 static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1541 {
1542 DeviceState *d = DEVICE(s);
1543
1544 val &= 0xff;
1545
1546 DPRINTF("Cfg9346 write val=0x%02x\n", val);
1547
1548 /* mask unwritable bits */
1549 val = SET_MASKED(val, 0x31, s->Cfg9346);
1550
1551 uint32_t opmode = val & 0xc0;
1552 uint32_t eeprom_val = val & 0xf;
1553
1554 if (opmode == 0x80) {
1555 /* eeprom access */
1556 int eecs = (eeprom_val & 0x08)?1:0;
1557 int eesk = (eeprom_val & 0x04)?1:0;
1558 int eedi = (eeprom_val & 0x02)?1:0;
1559 prom9346_set_wire(s, eecs, eesk, eedi);
1560 } else if (opmode == 0x40) {
1561 /* Reset. */
1562 val = 0;
1563 rtl8139_reset(d);
1564 }
1565
1566 s->Cfg9346 = val;
1567 }
1568
1569 static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1570 {
1571 uint32_t ret = s->Cfg9346;
1572
1573 uint32_t opmode = ret & 0xc0;
1574
1575 if (opmode == 0x80)
1576 {
1577 /* eeprom access */
1578 int eedo = prom9346_get_wire(s);
1579 if (eedo)
1580 {
1581 ret |= 0x01;
1582 }
1583 else
1584 {
1585 ret &= ~0x01;
1586 }
1587 }
1588
1589 DPRINTF("Cfg9346 read val=0x%02x\n", ret);
1590
1591 return ret;
1592 }
1593
1594 static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1595 {
1596 val &= 0xff;
1597
1598 DPRINTF("Config0 write val=0x%02x\n", val);
1599
1600 if (!rtl8139_config_writable(s)) {
1601 return;
1602 }
1603
1604 /* mask unwritable bits */
1605 val = SET_MASKED(val, 0xf8, s->Config0);
1606
1607 s->Config0 = val;
1608 }
1609
1610 static uint32_t rtl8139_Config0_read(RTL8139State *s)
1611 {
1612 uint32_t ret = s->Config0;
1613
1614 DPRINTF("Config0 read val=0x%02x\n", ret);
1615
1616 return ret;
1617 }
1618
1619 static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1620 {
1621 val &= 0xff;
1622
1623 DPRINTF("Config1 write val=0x%02x\n", val);
1624
1625 if (!rtl8139_config_writable(s)) {
1626 return;
1627 }
1628
1629 /* mask unwritable bits */
1630 val = SET_MASKED(val, 0xC, s->Config1);
1631
1632 s->Config1 = val;
1633 }
1634
1635 static uint32_t rtl8139_Config1_read(RTL8139State *s)
1636 {
1637 uint32_t ret = s->Config1;
1638
1639 DPRINTF("Config1 read val=0x%02x\n", ret);
1640
1641 return ret;
1642 }
1643
1644 static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1645 {
1646 val &= 0xff;
1647
1648 DPRINTF("Config3 write val=0x%02x\n", val);
1649
1650 if (!rtl8139_config_writable(s)) {
1651 return;
1652 }
1653
1654 /* mask unwritable bits */
1655 val = SET_MASKED(val, 0x8F, s->Config3);
1656
1657 s->Config3 = val;
1658 }
1659
1660 static uint32_t rtl8139_Config3_read(RTL8139State *s)
1661 {
1662 uint32_t ret = s->Config3;
1663
1664 DPRINTF("Config3 read val=0x%02x\n", ret);
1665
1666 return ret;
1667 }
1668
1669 static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1670 {
1671 val &= 0xff;
1672
1673 DPRINTF("Config4 write val=0x%02x\n", val);
1674
1675 if (!rtl8139_config_writable(s)) {
1676 return;
1677 }
1678
1679 /* mask unwritable bits */
1680 val = SET_MASKED(val, 0x0a, s->Config4);
1681
1682 s->Config4 = val;
1683 }
1684
1685 static uint32_t rtl8139_Config4_read(RTL8139State *s)
1686 {
1687 uint32_t ret = s->Config4;
1688
1689 DPRINTF("Config4 read val=0x%02x\n", ret);
1690
1691 return ret;
1692 }
1693
1694 static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1695 {
1696 val &= 0xff;
1697
1698 DPRINTF("Config5 write val=0x%02x\n", val);
1699
1700 /* mask unwritable bits */
1701 val = SET_MASKED(val, 0x80, s->Config5);
1702
1703 s->Config5 = val;
1704 }
1705
1706 static uint32_t rtl8139_Config5_read(RTL8139State *s)
1707 {
1708 uint32_t ret = s->Config5;
1709
1710 DPRINTF("Config5 read val=0x%02x\n", ret);
1711
1712 return ret;
1713 }
1714
1715 static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1716 {
1717 if (!rtl8139_transmitter_enabled(s))
1718 {
1719 DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val);
1720 return;
1721 }
1722
1723 DPRINTF("TxConfig write val=0x%08x\n", val);
1724
1725 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1726
1727 s->TxConfig = val;
1728 }
1729
1730 static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1731 {
1732 DPRINTF("RTL8139C TxConfig via write(b) val=0x%02x\n", val);
1733
1734 uint32_t tc = s->TxConfig;
1735 tc &= 0xFFFFFF00;
1736 tc |= (val & 0x000000FF);
1737 rtl8139_TxConfig_write(s, tc);
1738 }
1739
1740 static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1741 {
1742 uint32_t ret = s->TxConfig;
1743
1744 DPRINTF("TxConfig read val=0x%04x\n", ret);
1745
1746 return ret;
1747 }
1748
1749 static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1750 {
1751 DPRINTF("RxConfig write val=0x%08x\n", val);
1752
1753 /* mask unwritable bits */
1754 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1755
1756 s->RxConfig = val;
1757
1758 /* reset buffer size and read/write pointers */
1759 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1760
1761 DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize);
1762 }
1763
1764 static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1765 {
1766 uint32_t ret = s->RxConfig;
1767
1768 DPRINTF("RxConfig read val=0x%08x\n", ret);
1769
1770 return ret;
1771 }
1772
1773 static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
1774 int do_interrupt, const uint8_t *dot1q_buf)
1775 {
1776 struct iovec *iov = NULL;
1777 struct iovec vlan_iov[3];
1778
1779 if (!size)
1780 {
1781 DPRINTF("+++ empty ethernet frame\n");
1782 return;
1783 }
1784
1785 if (dot1q_buf && size >= ETH_ALEN * 2) {
1786 iov = (struct iovec[3]) {
1787 { .iov_base = buf, .iov_len = ETH_ALEN * 2 },
1788 { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN },
1789 { .iov_base = buf + ETH_ALEN * 2,
1790 .iov_len = size - ETH_ALEN * 2 },
1791 };
1792
1793 memcpy(vlan_iov, iov, sizeof(vlan_iov));
1794 iov = vlan_iov;
1795 }
1796
1797 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1798 {
1799 size_t buf2_size;
1800 uint8_t *buf2;
1801
1802 if (iov) {
1803 buf2_size = iov_size(iov, 3);
1804 buf2 = g_malloc(buf2_size);
1805 iov_to_buf(iov, 3, 0, buf2, buf2_size);
1806 buf = buf2;
1807 }
1808
1809 DPRINTF("+++ transmit loopback mode\n");
1810 rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt);
1811
1812 if (iov) {
1813 g_free(buf2);
1814 }
1815 }
1816 else
1817 {
1818 if (iov) {
1819 qemu_sendv_packet(qemu_get_queue(s->nic), iov, 3);
1820 } else {
1821 qemu_send_packet(qemu_get_queue(s->nic), buf, size);
1822 }
1823 }
1824 }
1825
1826 static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1827 {
1828 if (!rtl8139_transmitter_enabled(s))
1829 {
1830 DPRINTF("+++ cannot transmit from descriptor %d: transmitter "
1831 "disabled\n", descriptor);
1832 return 0;
1833 }
1834
1835 if (s->TxStatus[descriptor] & TxHostOwns)
1836 {
1837 DPRINTF("+++ cannot transmit from descriptor %d: owned by host "
1838 "(%08x)\n", descriptor, s->TxStatus[descriptor]);
1839 return 0;
1840 }
1841
1842 DPRINTF("+++ transmitting from descriptor %d\n", descriptor);
1843
1844 PCIDevice *d = PCI_DEVICE(s);
1845 int txsize = s->TxStatus[descriptor] & 0x1fff;
1846 uint8_t txbuffer[0x2000];
1847
1848 DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n",
1849 txsize, s->TxAddr[descriptor]);
1850
1851 pci_dma_read(d, s->TxAddr[descriptor], txbuffer, txsize);
1852
1853 /* Mark descriptor as transferred */
1854 s->TxStatus[descriptor] |= TxHostOwns;
1855 s->TxStatus[descriptor] |= TxStatOK;
1856
1857 rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL);
1858
1859 DPRINTF("+++ transmitted %d bytes from descriptor %d\n", txsize,
1860 descriptor);
1861
1862 /* update interrupt */
1863 s->IntrStatus |= TxOK;
1864 rtl8139_update_irq(s);
1865
1866 return 1;
1867 }
1868
1869 /* structures and macros for task offloading */
1870 #define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1871 #define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1872 #define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1873
1874 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1875
1876 /* produces ones' complement sum of data */
1877 static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1878 {
1879 uint32_t result = 0;
1880
1881 for (; len > 1; data+=2, len-=2)
1882 {
1883 result += *(uint16_t*)data;
1884 }
1885
1886 /* add the remainder byte */
1887 if (len)
1888 {
1889 uint8_t odd[2] = {*data, 0};
1890 result += *(uint16_t*)odd;
1891 }
1892
1893 while (result>>16)
1894 result = (result & 0xffff) + (result >> 16);
1895
1896 return result;
1897 }
1898
1899 static uint16_t ip_checksum(void *data, size_t len)
1900 {
1901 return ~ones_complement_sum((uint8_t*)data, len);
1902 }
1903
1904 static int rtl8139_cplus_transmit_one(RTL8139State *s)
1905 {
1906 if (!rtl8139_transmitter_enabled(s))
1907 {
1908 DPRINTF("+++ C+ mode: transmitter disabled\n");
1909 return 0;
1910 }
1911
1912 if (!rtl8139_cp_transmitter_enabled(s))
1913 {
1914 DPRINTF("+++ C+ mode: C+ transmitter disabled\n");
1915 return 0 ;
1916 }
1917
1918 PCIDevice *d = PCI_DEVICE(s);
1919 int descriptor = s->currCPlusTxDesc;
1920
1921 dma_addr_t cplus_tx_ring_desc = rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
1922
1923 /* Normal priority ring */
1924 cplus_tx_ring_desc += 16 * descriptor;
1925
1926 DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at "
1927 "%08x %08x = 0x"DMA_ADDR_FMT"\n", descriptor, s->TxAddr[1],
1928 s->TxAddr[0], cplus_tx_ring_desc);
1929
1930 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1931
1932 pci_dma_read(d, cplus_tx_ring_desc, (uint8_t *)&val, 4);
1933 txdw0 = le32_to_cpu(val);
1934 pci_dma_read(d, cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
1935 txdw1 = le32_to_cpu(val);
1936 pci_dma_read(d, cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
1937 txbufLO = le32_to_cpu(val);
1938 pci_dma_read(d, cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
1939 txbufHI = le32_to_cpu(val);
1940
1941 DPRINTF("+++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor,
1942 txdw0, txdw1, txbufLO, txbufHI);
1943
1944 /* w0 ownership flag */
1945 #define CP_TX_OWN (1<<31)
1946 /* w0 end of ring flag */
1947 #define CP_TX_EOR (1<<30)
1948 /* first segment of received packet flag */
1949 #define CP_TX_FS (1<<29)
1950 /* last segment of received packet flag */
1951 #define CP_TX_LS (1<<28)
1952 /* large send packet flag */
1953 #define CP_TX_LGSEN (1<<27)
1954 /* large send MSS mask, bits 16...25 */
1955 #define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1956
1957 /* IP checksum offload flag */
1958 #define CP_TX_IPCS (1<<18)
1959 /* UDP checksum offload flag */
1960 #define CP_TX_UDPCS (1<<17)
1961 /* TCP checksum offload flag */
1962 #define CP_TX_TCPCS (1<<16)
1963
1964 /* w0 bits 0...15 : buffer size */
1965 #define CP_TX_BUFFER_SIZE (1<<16)
1966 #define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
1967 /* w1 add tag flag */
1968 #define CP_TX_TAGC (1<<17)
1969 /* w1 bits 0...15 : VLAN tag (big endian) */
1970 #define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
1971 /* w2 low 32bit of Rx buffer ptr */
1972 /* w3 high 32bit of Rx buffer ptr */
1973
1974 /* set after transmission */
1975 /* FIFO underrun flag */
1976 #define CP_TX_STATUS_UNF (1<<25)
1977 /* transmit error summary flag, valid if set any of three below */
1978 #define CP_TX_STATUS_TES (1<<23)
1979 /* out-of-window collision flag */
1980 #define CP_TX_STATUS_OWC (1<<22)
1981 /* link failure flag */
1982 #define CP_TX_STATUS_LNKF (1<<21)
1983 /* excessive collisions flag */
1984 #define CP_TX_STATUS_EXC (1<<20)
1985
1986 if (!(txdw0 & CP_TX_OWN))
1987 {
1988 DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor);
1989 return 0 ;
1990 }
1991
1992 DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor);
1993
1994 if (txdw0 & CP_TX_FS)
1995 {
1996 DPRINTF("+++ C+ Tx mode : descriptor %d is first segment "
1997 "descriptor\n", descriptor);
1998
1999 /* reset internal buffer offset */
2000 s->cplus_txbuffer_offset = 0;
2001 }
2002
2003 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
2004 dma_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
2005
2006 /* make sure we have enough space to assemble the packet */
2007 if (!s->cplus_txbuffer)
2008 {
2009 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
2010 s->cplus_txbuffer = g_malloc(s->cplus_txbuffer_len);
2011 s->cplus_txbuffer_offset = 0;
2012
2013 DPRINTF("+++ C+ mode transmission buffer allocated space %d\n",
2014 s->cplus_txbuffer_len);
2015 }
2016
2017 if (s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
2018 {
2019 /* The spec didn't tell the maximum size, stick to CP_TX_BUFFER_SIZE */
2020 txsize = s->cplus_txbuffer_len - s->cplus_txbuffer_offset;
2021 DPRINTF("+++ C+ mode transmission buffer overrun, truncated descriptor"
2022 "length to %d\n", txsize);
2023 }
2024
2025 /* append more data to the packet */
2026
2027 DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at "
2028 DMA_ADDR_FMT" to offset %d\n", txsize, tx_addr,
2029 s->cplus_txbuffer_offset);
2030
2031 pci_dma_read(d, tx_addr,
2032 s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
2033 s->cplus_txbuffer_offset += txsize;
2034
2035 /* seek to next Rx descriptor */
2036 if (txdw0 & CP_TX_EOR)
2037 {
2038 s->currCPlusTxDesc = 0;
2039 }
2040 else
2041 {
2042 ++s->currCPlusTxDesc;
2043 if (s->currCPlusTxDesc >= 64)
2044 s->currCPlusTxDesc = 0;
2045 }
2046
2047 /* transfer ownership to target */
2048 txdw0 &= ~CP_RX_OWN;
2049
2050 /* reset error indicator bits */
2051 txdw0 &= ~CP_TX_STATUS_UNF;
2052 txdw0 &= ~CP_TX_STATUS_TES;
2053 txdw0 &= ~CP_TX_STATUS_OWC;
2054 txdw0 &= ~CP_TX_STATUS_LNKF;
2055 txdw0 &= ~CP_TX_STATUS_EXC;
2056
2057 /* update ring data */
2058 val = cpu_to_le32(txdw0);
2059 pci_dma_write(d, cplus_tx_ring_desc, (uint8_t *)&val, 4);
2060
2061 /* Now decide if descriptor being processed is holding the last segment of packet */
2062 if (txdw0 & CP_TX_LS)
2063 {
2064 uint8_t dot1q_buffer_space[VLAN_HLEN];
2065 uint16_t *dot1q_buffer;
2066
2067 DPRINTF("+++ C+ Tx mode : descriptor %d is last segment descriptor\n",
2068 descriptor);
2069
2070 /* can transfer fully assembled packet */
2071
2072 uint8_t *saved_buffer = s->cplus_txbuffer;
2073 int saved_size = s->cplus_txbuffer_offset;
2074 int saved_buffer_len = s->cplus_txbuffer_len;
2075
2076 /* create vlan tag */
2077 if (txdw1 & CP_TX_TAGC) {
2078 /* the vlan tag is in BE byte order in the descriptor
2079 * BE + le_to_cpu() + ~swap()~ = cpu */
2080 DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n",
2081 bswap16(txdw1 & CP_TX_VLAN_TAG_MASK));
2082
2083 dot1q_buffer = (uint16_t *) dot1q_buffer_space;
2084 dot1q_buffer[0] = cpu_to_be16(ETH_P_VLAN);
2085 /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */
2086 dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK);
2087 } else {
2088 dot1q_buffer = NULL;
2089 }
2090
2091 /* reset the card space to protect from recursive call */
2092 s->cplus_txbuffer = NULL;
2093 s->cplus_txbuffer_offset = 0;
2094 s->cplus_txbuffer_len = 0;
2095
2096 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
2097 {
2098 DPRINTF("+++ C+ mode offloaded task checksum\n");
2099
2100 /* Large enough for Ethernet and IP headers? */
2101 if (saved_size < ETH_HLEN + sizeof(struct ip_header)) {
2102 goto skip_offload;
2103 }
2104
2105 /* ip packet header */
2106 struct ip_header *ip = NULL;
2107 int hlen = 0;
2108 uint8_t ip_protocol = 0;
2109 uint16_t ip_data_len = 0;
2110
2111 uint8_t *eth_payload_data = NULL;
2112 size_t eth_payload_len = 0;
2113
2114 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
2115 if (proto != ETH_P_IP)
2116 {
2117 goto skip_offload;
2118 }
2119
2120 DPRINTF("+++ C+ mode has IP packet\n");
2121
2122 /* Note on memory alignment: eth_payload_data is 16-bit aligned
2123 * since saved_buffer is allocated with g_malloc() and ETH_HLEN is
2124 * even. 32-bit accesses must use ldl/stl wrappers to avoid
2125 * unaligned accesses.
2126 */
2127 eth_payload_data = saved_buffer + ETH_HLEN;
2128 eth_payload_len = saved_size - ETH_HLEN;
2129
2130 ip = (struct ip_header*)eth_payload_data;
2131
2132 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
2133 DPRINTF("+++ C+ mode packet has bad IP version %d "
2134 "expected %d\n", IP_HEADER_VERSION(ip),
2135 IP_HEADER_VERSION_4);
2136 goto skip_offload;
2137 }
2138
2139 hlen = IP_HDR_GET_LEN(ip);
2140 if (hlen < sizeof(struct ip_header) || hlen > eth_payload_len) {
2141 goto skip_offload;
2142 }
2143
2144 ip_protocol = ip->ip_p;
2145
2146 ip_data_len = be16_to_cpu(ip->ip_len);
2147 if (ip_data_len < hlen || ip_data_len > eth_payload_len) {
2148 goto skip_offload;
2149 }
2150 ip_data_len -= hlen;
2151
2152 if (txdw0 & CP_TX_IPCS)
2153 {
2154 DPRINTF("+++ C+ mode need IP checksum\n");
2155
2156 ip->ip_sum = 0;
2157 ip->ip_sum = ip_checksum(ip, hlen);
2158 DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n",
2159 hlen, ip->ip_sum);
2160 }
2161
2162 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
2163 {
2164 /* Large enough for the TCP header? */
2165 if (ip_data_len < sizeof(tcp_header)) {
2166 goto skip_offload;
2167 }
2168
2169 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
2170
2171 DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d "
2172 "frame data %d specified MSS=%d\n", ETH_MTU,
2173 ip_data_len, saved_size - ETH_HLEN, large_send_mss);
2174
2175 int tcp_send_offset = 0;
2176 int send_count = 0;
2177
2178 /* maximum IP header length is 60 bytes */
2179 uint8_t saved_ip_header[60];
2180
2181 /* save IP header template; data area is used in tcp checksum calculation */
2182 memcpy(saved_ip_header, eth_payload_data, hlen);
2183
2184 /* a placeholder for checksum calculation routine in tcp case */
2185 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2186 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2187
2188 /* pointer to TCP header */
2189 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2190
2191 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2192
2193 /* Invalid TCP data offset? */
2194 if (tcp_hlen < sizeof(tcp_header) || tcp_hlen > ip_data_len) {
2195 goto skip_offload;
2196 }
2197
2198 /* ETH_MTU = ip header len + tcp header len + payload */
2199 int tcp_data_len = ip_data_len - tcp_hlen;
2200 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2201
2202 DPRINTF("+++ C+ mode TSO IP data len %d TCP hlen %d TCP "
2203 "data len %d TCP chunk size %d\n", ip_data_len,
2204 tcp_hlen, tcp_data_len, tcp_chunk_size);
2205
2206 /* note the cycle below overwrites IP header data,
2207 but restores it from saved_ip_header before sending packet */
2208
2209 int is_last_frame = 0;
2210
2211 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2212 {
2213 uint16_t chunk_size = tcp_chunk_size;
2214
2215 /* check if this is the last frame */
2216 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2217 {
2218 is_last_frame = 1;
2219 chunk_size = tcp_data_len - tcp_send_offset;
2220 }
2221
2222 DPRINTF("+++ C+ mode TSO TCP seqno %08x\n",
2223 ldl_be_p(&p_tcp_hdr->th_seq));
2224
2225 /* add 4 TCP pseudoheader fields */
2226 /* copy IP source and destination fields */
2227 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2228
2229 DPRINTF("+++ C+ mode TSO calculating TCP checksum for "
2230 "packet with %d bytes data\n", tcp_hlen +
2231 chunk_size);
2232
2233 if (tcp_send_offset)
2234 {
2235 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2236 }
2237
2238 /* keep PUSH and FIN flags only for the last frame */
2239 if (!is_last_frame)
2240 {
2241 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TH_PUSH | TH_FIN);
2242 }
2243
2244 /* recalculate TCP checksum */
2245 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2246 p_tcpip_hdr->zeros = 0;
2247 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2248 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2249
2250 p_tcp_hdr->th_sum = 0;
2251
2252 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
2253 DPRINTF("+++ C+ mode TSO TCP checksum %04x\n",
2254 tcp_checksum);
2255
2256 p_tcp_hdr->th_sum = tcp_checksum;
2257
2258 /* restore IP header */
2259 memcpy(eth_payload_data, saved_ip_header, hlen);
2260
2261 /* set IP data length and recalculate IP checksum */
2262 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2263
2264 /* increment IP id for subsequent frames */
2265 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2266
2267 ip->ip_sum = 0;
2268 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
2269 DPRINTF("+++ C+ mode TSO IP header len=%d "
2270 "checksum=%04x\n", hlen, ip->ip_sum);
2271
2272 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
2273 DPRINTF("+++ C+ mode TSO transferring packet size "
2274 "%d\n", tso_send_size);
2275 rtl8139_transfer_frame(s, saved_buffer, tso_send_size,
2276 0, (uint8_t *) dot1q_buffer);
2277
2278 /* add transferred count to TCP sequence number */
2279 stl_be_p(&p_tcp_hdr->th_seq,
2280 chunk_size + ldl_be_p(&p_tcp_hdr->th_seq));
2281 ++send_count;
2282 }
2283
2284 /* Stop sending this frame */
2285 saved_size = 0;
2286 }
2287 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2288 {
2289 DPRINTF("+++ C+ mode need TCP or UDP checksum\n");
2290
2291 /* maximum IP header length is 60 bytes */
2292 uint8_t saved_ip_header[60];
2293 memcpy(saved_ip_header, eth_payload_data, hlen);
2294
2295 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2296 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2297
2298 /* add 4 TCP pseudoheader fields */
2299 /* copy IP source and destination fields */
2300 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2301
2302 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
2303 {
2304 DPRINTF("+++ C+ mode calculating TCP checksum for "
2305 "packet with %d bytes data\n", ip_data_len);
2306
2307 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2308 p_tcpip_hdr->zeros = 0;
2309 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2310 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2311
2312 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
2313
2314 p_tcp_hdr->th_sum = 0;
2315
2316 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2317 DPRINTF("+++ C+ mode TCP checksum %04x\n",
2318 tcp_checksum);
2319
2320 p_tcp_hdr->th_sum = tcp_checksum;
2321 }
2322 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
2323 {
2324 DPRINTF("+++ C+ mode calculating UDP checksum for "
2325 "packet with %d bytes data\n", ip_data_len);
2326
2327 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2328 p_udpip_hdr->zeros = 0;
2329 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2330 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
2331
2332 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
2333
2334 p_udp_hdr->uh_sum = 0;
2335
2336 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
2337 DPRINTF("+++ C+ mode UDP checksum %04x\n",
2338 udp_checksum);
2339
2340 p_udp_hdr->uh_sum = udp_checksum;
2341 }
2342
2343 /* restore IP header */
2344 memcpy(eth_payload_data, saved_ip_header, hlen);
2345 }
2346 }
2347
2348 skip_offload:
2349 /* update tally counter */
2350 ++s->tally_counters.TxOk;
2351
2352 DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size);
2353
2354 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1,
2355 (uint8_t *) dot1q_buffer);
2356
2357 /* restore card space if there was no recursion and reset offset */
2358 if (!s->cplus_txbuffer)
2359 {
2360 s->cplus_txbuffer = saved_buffer;
2361 s->cplus_txbuffer_len = saved_buffer_len;
2362 s->cplus_txbuffer_offset = 0;
2363 }
2364 else
2365 {
2366 g_free(saved_buffer);
2367 }
2368 }
2369 else
2370 {
2371 DPRINTF("+++ C+ mode transmission continue to next descriptor\n");
2372 }
2373
2374 return 1;
2375 }
2376
2377 static void rtl8139_cplus_transmit(RTL8139State *s)
2378 {
2379 int txcount = 0;
2380
2381 while (rtl8139_cplus_transmit_one(s))
2382 {
2383 ++txcount;
2384 }
2385
2386 /* Mark transfer completed */
2387 if (!txcount)
2388 {
2389 DPRINTF("C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2390 s->currCPlusTxDesc);
2391 }
2392 else
2393 {
2394 /* update interrupt status */
2395 s->IntrStatus |= TxOK;
2396 rtl8139_update_irq(s);
2397 }
2398 }
2399
2400 static void rtl8139_transmit(RTL8139State *s)
2401 {
2402 int descriptor = s->currTxDesc, txcount = 0;
2403
2404 /*while*/
2405 if (rtl8139_transmit_one(s, descriptor))
2406 {
2407 ++s->currTxDesc;
2408 s->currTxDesc %= 4;
2409 ++txcount;
2410 }
2411
2412 /* Mark transfer completed */
2413 if (!txcount)
2414 {
2415 DPRINTF("transmitter queue stalled, current TxDesc = %d\n",
2416 s->currTxDesc);
2417 }
2418 }
2419
2420 static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2421 {
2422
2423 int descriptor = txRegOffset/4;
2424
2425 /* handle C+ transmit mode register configuration */
2426
2427 if (s->cplus_enabled)
2428 {
2429 DPRINTF("RTL8139C+ DTCCR write offset=0x%x val=0x%08x "
2430 "descriptor=%d\n", txRegOffset, val, descriptor);
2431
2432 /* handle Dump Tally Counters command */
2433 s->TxStatus[descriptor] = val;
2434
2435 if (descriptor == 0 && (val & 0x8))
2436 {
2437 hwaddr tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
2438
2439 /* dump tally counters to specified memory location */
2440 RTL8139TallyCounters_dma_write(s, tc_addr);
2441
2442 /* mark dump completed */
2443 s->TxStatus[0] &= ~0x8;
2444 }
2445
2446 return;
2447 }
2448
2449 DPRINTF("TxStatus write offset=0x%x val=0x%08x descriptor=%d\n",
2450 txRegOffset, val, descriptor);
2451
2452 /* mask only reserved bits */
2453 val &= ~0xff00c000; /* these bits are reset on write */
2454 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2455
2456 s->TxStatus[descriptor] = val;
2457
2458 /* attempt to start transmission */
2459 rtl8139_transmit(s);
2460 }
2461
2462 static uint32_t rtl8139_TxStatus_TxAddr_read(RTL8139State *s, uint32_t regs[],
2463 uint32_t base, uint8_t addr,
2464 int size)
2465 {
2466 uint32_t reg = (addr - base) / 4;
2467 uint32_t offset = addr & 0x3;
2468 uint32_t ret = 0;
2469
2470 if (addr & (size - 1)) {
2471 DPRINTF("not implemented read for TxStatus/TxAddr "
2472 "addr=0x%x size=0x%x\n", addr, size);
2473 return ret;
2474 }
2475
2476 switch (size) {
2477 case 1: /* fall through */
2478 case 2: /* fall through */
2479 case 4:
2480 ret = (regs[reg] >> offset * 8) & (((uint64_t)1 << (size * 8)) - 1);
2481 DPRINTF("TxStatus/TxAddr[%d] read addr=0x%x size=0x%x val=0x%08x\n",
2482 reg, addr, size, ret);
2483 break;
2484 default:
2485 DPRINTF("unsupported size 0x%x of TxStatus/TxAddr reading\n", size);
2486 break;
2487 }
2488
2489 return ret;
2490 }
2491
2492 static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2493 {
2494 uint16_t ret = 0;
2495
2496 /* Simulate TSAD, it is read only anyway */
2497
2498 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2499 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2500 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2501 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2502
2503 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2504 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2505 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2506 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
2507
2508 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2509 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2510 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2511 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
2512
2513 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2514 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2515 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2516 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
2517
2518
2519 DPRINTF("TSAD read val=0x%04x\n", ret);
2520
2521 return ret;
2522 }
2523
2524 static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2525 {
2526 uint16_t ret = s->CSCR;
2527
2528 DPRINTF("CSCR read val=0x%04x\n", ret);
2529
2530 return ret;
2531 }
2532
2533 static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2534 {
2535 DPRINTF("TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val);
2536
2537 s->TxAddr[txAddrOffset/4] = val;
2538 }
2539
2540 static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2541 {
2542 uint32_t ret = s->TxAddr[txAddrOffset/4];
2543
2544 DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret);
2545
2546 return ret;
2547 }
2548
2549 static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2550 {
2551 DPRINTF("RxBufPtr write val=0x%04x\n", val);
2552
2553 /* this value is off by 16 */
2554 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2555
2556 /* more buffer space may be available so try to receive */
2557 qemu_flush_queued_packets(qemu_get_queue(s->nic));
2558
2559 DPRINTF(" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2560 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
2561 }
2562
2563 static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2564 {
2565 /* this value is off by 16 */
2566 uint32_t ret = s->RxBufPtr - 0x10;
2567
2568 DPRINTF("RxBufPtr read val=0x%04x\n", ret);
2569
2570 return ret;
2571 }
2572
2573 static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2574 {
2575 /* this value is NOT off by 16 */
2576 uint32_t ret = s->RxBufAddr;
2577
2578 DPRINTF("RxBufAddr read val=0x%04x\n", ret);
2579
2580 return ret;
2581 }
2582
2583 static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2584 {
2585 DPRINTF("RxBuf write val=0x%08x\n", val);
2586
2587 s->RxBuf = val;
2588
2589 /* may need to reset rxring here */
2590 }
2591
2592 static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2593 {
2594 uint32_t ret = s->RxBuf;
2595
2596 DPRINTF("RxBuf read val=0x%08x\n", ret);
2597
2598 return ret;
2599 }
2600
2601 static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2602 {
2603 DPRINTF("IntrMask write(w) val=0x%04x\n", val);
2604
2605 /* mask unwritable bits */
2606 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2607
2608 s->IntrMask = val;
2609
2610 rtl8139_update_irq(s);
2611
2612 }
2613
2614 static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2615 {
2616 uint32_t ret = s->IntrMask;
2617
2618 DPRINTF("IntrMask read(w) val=0x%04x\n", ret);
2619
2620 return ret;
2621 }
2622
2623 static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2624 {
2625 DPRINTF("IntrStatus write(w) val=0x%04x\n", val);
2626
2627 #if 0
2628
2629 /* writing to ISR has no effect */
2630
2631 return;
2632
2633 #else
2634 uint16_t newStatus = s->IntrStatus & ~val;
2635
2636 /* mask unwritable bits */
2637 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2638
2639 /* writing 1 to interrupt status register bit clears it */
2640 s->IntrStatus = 0;
2641 rtl8139_update_irq(s);
2642
2643 s->IntrStatus = newStatus;
2644 rtl8139_set_next_tctr_time(s);
2645 rtl8139_update_irq(s);
2646
2647 #endif
2648 }
2649
2650 static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2651 {
2652 uint32_t ret = s->IntrStatus;
2653
2654 DPRINTF("IntrStatus read(w) val=0x%04x\n", ret);
2655
2656 #if 0
2657
2658 /* reading ISR clears all interrupts */
2659 s->IntrStatus = 0;
2660
2661 rtl8139_update_irq(s);
2662
2663 #endif
2664
2665 return ret;
2666 }
2667
2668 static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2669 {
2670 DPRINTF("MultiIntr write(w) val=0x%04x\n", val);
2671
2672 /* mask unwritable bits */
2673 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2674
2675 s->MultiIntr = val;
2676 }
2677
2678 static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2679 {
2680 uint32_t ret = s->MultiIntr;
2681
2682 DPRINTF("MultiIntr read(w) val=0x%04x\n", ret);
2683
2684 return ret;
2685 }
2686
2687 static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2688 {
2689 RTL8139State *s = opaque;
2690
2691 switch (addr)
2692 {
2693 case MAC0 ... MAC0+4:
2694 s->phys[addr - MAC0] = val;
2695 break;
2696 case MAC0+5:
2697 s->phys[addr - MAC0] = val;
2698 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys);
2699 break;
2700 case MAC0+6 ... MAC0+7:
2701 /* reserved */
2702 break;
2703 case MAR0 ... MAR0+7:
2704 s->mult[addr - MAR0] = val;
2705 break;
2706 case ChipCmd:
2707 rtl8139_ChipCmd_write(s, val);
2708 break;
2709 case Cfg9346:
2710 rtl8139_Cfg9346_write(s, val);
2711 break;
2712 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2713 rtl8139_TxConfig_writeb(s, val);
2714 break;
2715 case Config0:
2716 rtl8139_Config0_write(s, val);
2717 break;
2718 case Config1:
2719 rtl8139_Config1_write(s, val);
2720 break;
2721 case Config3:
2722 rtl8139_Config3_write(s, val);
2723 break;
2724 case Config4:
2725 rtl8139_Config4_write(s, val);
2726 break;
2727 case Config5:
2728 rtl8139_Config5_write(s, val);
2729 break;
2730 case MediaStatus:
2731 /* ignore */
2732 DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n",
2733 val);
2734 break;
2735
2736 case HltClk:
2737 DPRINTF("HltClk write val=0x%08x\n", val);
2738 if (val == 'R')
2739 {
2740 s->clock_enabled = 1;
2741 }
2742 else if (val == 'H')
2743 {
2744 s->clock_enabled = 0;
2745 }
2746 break;
2747
2748 case TxThresh:
2749 DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val);
2750 s->TxThresh = val;
2751 break;
2752
2753 case TxPoll:
2754 DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val);
2755 if (val & (1 << 7))
2756 {
2757 DPRINTF("C+ TxPoll high priority transmission (not "
2758 "implemented)\n");
2759 //rtl8139_cplus_transmit(s);
2760 }
2761 if (val & (1 << 6))
2762 {
2763 DPRINTF("C+ TxPoll normal priority transmission\n");
2764 rtl8139_cplus_transmit(s);
2765 }
2766
2767 break;
2768
2769 default:
2770 DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
2771 val);
2772 break;
2773 }
2774 }
2775
2776 static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2777 {
2778 RTL8139State *s = opaque;
2779
2780 switch (addr)
2781 {
2782 case IntrMask:
2783 rtl8139_IntrMask_write(s, val);
2784 break;
2785
2786 case IntrStatus:
2787 rtl8139_IntrStatus_write(s, val);
2788 break;
2789
2790 case MultiIntr:
2791 rtl8139_MultiIntr_write(s, val);
2792 break;
2793
2794 case RxBufPtr:
2795 rtl8139_RxBufPtr_write(s, val);
2796 break;
2797
2798 case BasicModeCtrl:
2799 rtl8139_BasicModeCtrl_write(s, val);
2800 break;
2801 case BasicModeStatus:
2802 rtl8139_BasicModeStatus_write(s, val);
2803 break;
2804 case NWayAdvert:
2805 DPRINTF("NWayAdvert write(w) val=0x%04x\n", val);
2806 s->NWayAdvert = val;
2807 break;
2808 case NWayLPAR:
2809 DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val);
2810 break;
2811 case NWayExpansion:
2812 DPRINTF("NWayExpansion write(w) val=0x%04x\n", val);
2813 s->NWayExpansion = val;
2814 break;
2815
2816 case CpCmd:
2817 rtl8139_CpCmd_write(s, val);
2818 break;
2819
2820 case IntrMitigate:
2821 rtl8139_IntrMitigate_write(s, val);
2822 break;
2823
2824 default:
2825 DPRINTF("ioport write(w) addr=0x%x val=0x%04x via write(b)\n",
2826 addr, val);
2827
2828 rtl8139_io_writeb(opaque, addr, val & 0xff);
2829 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2830 break;
2831 }
2832 }
2833
2834 static void rtl8139_set_next_tctr_time(RTL8139State *s)
2835 {
2836 const uint64_t ns_per_period = (uint64_t)PCI_PERIOD << 32;
2837
2838 DPRINTF("entered rtl8139_set_next_tctr_time\n");
2839
2840 /* This function is called at least once per period, so it is a good
2841 * place to update the timer base.
2842 *
2843 * After one iteration of this loop the value in the Timer register does
2844 * not change, but the device model is counting up by 2^32 ticks (approx.
2845 * 130 seconds).
2846 */
2847 while (s->TCTR_base + ns_per_period <= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)) {
2848 s->TCTR_base += ns_per_period;
2849 }
2850
2851 if (!s->TimerInt) {
2852 timer_del(s->timer);
2853 } else {
2854 uint64_t delta = (uint64_t)s->TimerInt * PCI_PERIOD;
2855 if (s->TCTR_base + delta <= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)) {
2856 delta += ns_per_period;
2857 }
2858 timer_mod(s->timer, s->TCTR_base + delta);
2859 }
2860 }
2861
2862 static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2863 {
2864 RTL8139State *s = opaque;
2865
2866 switch (addr)
2867 {
2868 case RxMissed:
2869 DPRINTF("RxMissed clearing on write\n");
2870 s->RxMissed = 0;
2871 break;
2872
2873 case TxConfig:
2874 rtl8139_TxConfig_write(s, val);
2875 break;
2876
2877 case RxConfig:
2878 rtl8139_RxConfig_write(s, val);
2879 break;
2880
2881 case TxStatus0 ... TxStatus0+4*4-1:
2882 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2883 break;
2884
2885 case TxAddr0 ... TxAddr0+4*4-1:
2886 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2887 break;
2888
2889 case RxBuf:
2890 rtl8139_RxBuf_write(s, val);
2891 break;
2892
2893 case RxRingAddrLO:
2894 DPRINTF("C+ RxRing low bits write val=0x%08x\n", val);
2895 s->RxRingAddrLO = val;
2896 break;
2897
2898 case RxRingAddrHI:
2899 DPRINTF("C+ RxRing high bits write val=0x%08x\n", val);
2900 s->RxRingAddrHI = val;
2901 break;
2902
2903 case Timer:
2904 DPRINTF("TCTR Timer reset on write\n");
2905 s->TCTR_base = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2906 rtl8139_set_next_tctr_time(s);
2907 break;
2908
2909 case FlashReg:
2910 DPRINTF("FlashReg TimerInt write val=0x%08x\n", val);
2911 if (s->TimerInt != val) {
2912 s->TimerInt = val;
2913 rtl8139_set_next_tctr_time(s);
2914 }
2915 break;
2916
2917 default:
2918 DPRINTF("ioport write(l) addr=0x%x val=0x%08x via write(b)\n",
2919 addr, val);
2920 rtl8139_io_writeb(opaque, addr, val & 0xff);
2921 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2922 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2923 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2924 break;
2925 }
2926 }
2927
2928 static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2929 {
2930 RTL8139State *s = opaque;
2931 int ret;
2932
2933 switch (addr)
2934 {
2935 case MAC0 ... MAC0+5:
2936 ret = s->phys[addr - MAC0];
2937 break;
2938 case MAC0+6 ... MAC0+7:
2939 ret = 0;
2940 break;
2941 case MAR0 ... MAR0+7:
2942 ret = s->mult[addr - MAR0];
2943 break;
2944 case TxStatus0 ... TxStatus0+4*4-1:
2945 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0,
2946 addr, 1);
2947 break;
2948 case ChipCmd:
2949 ret = rtl8139_ChipCmd_read(s);
2950 break;
2951 case Cfg9346:
2952 ret = rtl8139_Cfg9346_read(s);
2953 break;
2954 case Config0:
2955 ret = rtl8139_Config0_read(s);
2956 break;
2957 case Config1:
2958 ret = rtl8139_Config1_read(s);
2959 break;
2960 case Config3:
2961 ret = rtl8139_Config3_read(s);
2962 break;
2963 case Config4:
2964 ret = rtl8139_Config4_read(s);
2965 break;
2966 case Config5:
2967 ret = rtl8139_Config5_read(s);
2968 break;
2969
2970 case MediaStatus:
2971 /* The LinkDown bit of MediaStatus is inverse with link status */
2972 ret = 0xd0 | (~s->BasicModeStatus & 0x04);
2973 DPRINTF("MediaStatus read 0x%x\n", ret);
2974 break;
2975
2976 case HltClk:
2977 ret = s->clock_enabled;
2978 DPRINTF("HltClk read 0x%x\n", ret);
2979 break;
2980
2981 case PCIRevisionID:
2982 ret = RTL8139_PCI_REVID;
2983 DPRINTF("PCI Revision ID read 0x%x\n", ret);
2984 break;
2985
2986 case TxThresh:
2987 ret = s->TxThresh;
2988 DPRINTF("C+ TxThresh read(b) val=0x%02x\n", ret);
2989 break;
2990
2991 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
2992 ret = s->TxConfig >> 24;
2993 DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret);
2994 break;
2995
2996 default:
2997 DPRINTF("not implemented read(b) addr=0x%x\n", addr);
2998 ret = 0;
2999 break;
3000 }
3001
3002 return ret;
3003 }
3004
3005 static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
3006 {
3007 RTL8139State *s = opaque;
3008 uint32_t ret;
3009
3010 switch (addr)
3011 {
3012 case TxAddr0 ... TxAddr0+4*4-1:
3013 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxAddr, TxAddr0, addr, 2);
3014 break;
3015 case IntrMask:
3016 ret = rtl8139_IntrMask_read(s);
3017 break;
3018
3019 case IntrStatus:
3020 ret = rtl8139_IntrStatus_read(s);
3021 break;
3022
3023 case MultiIntr:
3024 ret = rtl8139_MultiIntr_read(s);
3025 break;
3026
3027 case RxBufPtr:
3028 ret = rtl8139_RxBufPtr_read(s);
3029 break;
3030
3031 case RxBufAddr:
3032 ret = rtl8139_RxBufAddr_read(s);
3033 break;
3034
3035 case BasicModeCtrl:
3036 ret = rtl8139_BasicModeCtrl_read(s);
3037 break;
3038 case BasicModeStatus:
3039 ret = rtl8139_BasicModeStatus_read(s);
3040 break;
3041 case NWayAdvert:
3042 ret = s->NWayAdvert;
3043 DPRINTF("NWayAdvert read(w) val=0x%04x\n", ret);
3044 break;
3045 case NWayLPAR:
3046 ret = s->NWayLPAR;
3047 DPRINTF("NWayLPAR read(w) val=0x%04x\n", ret);
3048 break;
3049 case NWayExpansion:
3050 ret = s->NWayExpansion;
3051 DPRINTF("NWayExpansion read(w) val=0x%04x\n", ret);
3052 break;
3053
3054 case CpCmd:
3055 ret = rtl8139_CpCmd_read(s);
3056 break;
3057
3058 case IntrMitigate:
3059 ret = rtl8139_IntrMitigate_read(s);
3060 break;
3061
3062 case TxSummary:
3063 ret = rtl8139_TSAD_read(s);
3064 break;
3065
3066 case CSCR:
3067 ret = rtl8139_CSCR_read(s);
3068 break;
3069
3070 default:
3071 DPRINTF("ioport read(w) addr=0x%x via read(b)\n", addr);
3072
3073 ret = rtl8139_io_readb(opaque, addr);
3074 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3075
3076 DPRINTF("ioport read(w) addr=0x%x val=0x%04x\n", addr, ret);
3077 break;
3078 }
3079
3080 return ret;
3081 }
3082
3083 static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
3084 {
3085 RTL8139State *s = opaque;
3086 uint32_t ret;
3087
3088 switch (addr)
3089 {
3090 case RxMissed:
3091 ret = s->RxMissed;
3092
3093 DPRINTF("RxMissed read val=0x%08x\n", ret);
3094 break;
3095
3096 case TxConfig:
3097 ret = rtl8139_TxConfig_read(s);
3098 break;
3099
3100 case RxConfig:
3101 ret = rtl8139_RxConfig_read(s);
3102 break;
3103
3104 case TxStatus0 ... TxStatus0+4*4-1:
3105 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0,
3106 addr, 4);
3107 break;
3108
3109 case TxAddr0 ... TxAddr0+4*4-1:
3110 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
3111 break;
3112
3113 case RxBuf:
3114 ret = rtl8139_RxBuf_read(s);
3115 break;
3116
3117 case RxRingAddrLO:
3118 ret = s->RxRingAddrLO;
3119 DPRINTF("C+ RxRing low bits read val=0x%08x\n", ret);
3120 break;
3121
3122 case RxRingAddrHI:
3123 ret = s->RxRingAddrHI;
3124 DPRINTF("C+ RxRing high bits read val=0x%08x\n", ret);
3125 break;
3126
3127 case Timer:
3128 ret = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - s->TCTR_base) /
3129 PCI_PERIOD;
3130 DPRINTF("TCTR Timer read val=0x%08x\n", ret);
3131 break;
3132
3133 case FlashReg:
3134 ret = s->TimerInt;
3135 DPRINTF("FlashReg TimerInt read val=0x%08x\n", ret);
3136 break;
3137
3138 default:
3139 DPRINTF("ioport read(l) addr=0x%x via read(b)\n", addr);
3140
3141 ret = rtl8139_io_readb(opaque, addr);
3142 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3143 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3144 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
3145
3146 DPRINTF("read(l) addr=0x%x val=%08x\n", addr, ret);
3147 break;
3148 }
3149
3150 return ret;
3151 }
3152
3153 /* */
3154
3155 static void rtl8139_mmio_writeb(void *opaque, hwaddr addr, uint32_t val)
3156 {
3157 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3158 }
3159
3160 static void rtl8139_mmio_writew(void *opaque, hwaddr addr, uint32_t val)
3161 {
3162 rtl8139_io_writew(opaque, addr & 0xFF, val);
3163 }
3164
3165 static void rtl8139_mmio_writel(void *opaque, hwaddr addr, uint32_t val)
3166 {
3167 rtl8139_io_writel(opaque, addr & 0xFF, val);
3168 }
3169
3170 static uint32_t rtl8139_mmio_readb(void *opaque, hwaddr addr)
3171 {
3172 return rtl8139_io_readb(opaque, addr & 0xFF);
3173 }
3174
3175 static uint32_t rtl8139_mmio_readw(void *opaque, hwaddr addr)
3176 {
3177 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
3178 return val;
3179 }
3180
3181 static uint32_t rtl8139_mmio_readl(void *opaque, hwaddr addr)
3182 {
3183 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
3184 return val;
3185 }
3186
3187 static int rtl8139_post_load(void *opaque, int version_id)
3188 {
3189 RTL8139State* s = opaque;
3190 rtl8139_set_next_tctr_time(s);
3191 if (version_id < 4) {
3192 s->cplus_enabled = s->CpCmd != 0;
3193 }
3194
3195 /* nc.link_down can't be migrated, so infer link_down according
3196 * to link status bit in BasicModeStatus */
3197 qemu_get_queue(s->nic)->link_down = (s->BasicModeStatus & 0x04) == 0;
3198
3199 return 0;
3200 }
3201
3202 static bool rtl8139_hotplug_ready_needed(void *opaque)
3203 {
3204 return qdev_machine_modified();
3205 }
3206
3207 static const VMStateDescription vmstate_rtl8139_hotplug_ready ={
3208 .name = "rtl8139/hotplug_ready",
3209 .version_id = 1,
3210 .minimum_version_id = 1,
3211 .needed = rtl8139_hotplug_ready_needed,
3212 .fields = (VMStateField[]) {
3213 VMSTATE_END_OF_LIST()
3214 }
3215 };
3216
3217 static void rtl8139_pre_save(void *opaque)
3218 {
3219 RTL8139State* s = opaque;
3220 int64_t current_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
3221
3222 /* for migration to older versions */
3223 s->TCTR = (current_time - s->TCTR_base) / PCI_PERIOD;
3224 s->rtl8139_mmio_io_addr_dummy = 0;
3225 }
3226
3227 static const VMStateDescription vmstate_rtl8139 = {
3228 .name = "rtl8139",
3229 .version_id = 4,
3230 .minimum_version_id = 3,
3231 .post_load = rtl8139_post_load,
3232 .pre_save = rtl8139_pre_save,
3233 .fields = (VMStateField[]) {
3234 VMSTATE_PCI_DEVICE(parent_obj, RTL8139State),
3235 VMSTATE_PARTIAL_BUFFER(phys, RTL8139State, 6),
3236 VMSTATE_BUFFER(mult, RTL8139State),
3237 VMSTATE_UINT32_ARRAY(TxStatus, RTL8139State, 4),
3238 VMSTATE_UINT32_ARRAY(TxAddr, RTL8139State, 4),
3239
3240 VMSTATE_UINT32(RxBuf, RTL8139State),
3241 VMSTATE_UINT32(RxBufferSize, RTL8139State),
3242 VMSTATE_UINT32(RxBufPtr, RTL8139State),
3243 VMSTATE_UINT32(RxBufAddr, RTL8139State),
3244
3245 VMSTATE_UINT16(IntrStatus, RTL8139State),
3246 VMSTATE_UINT16(IntrMask, RTL8139State),
3247
3248 VMSTATE_UINT32(TxConfig, RTL8139State),
3249 VMSTATE_UINT32(RxConfig, RTL8139State),
3250 VMSTATE_UINT32(RxMissed, RTL8139State),
3251 VMSTATE_UINT16(CSCR, RTL8139State),
3252
3253 VMSTATE_UINT8(Cfg9346, RTL8139State),
3254 VMSTATE_UINT8(Config0, RTL8139State),
3255 VMSTATE_UINT8(Config1, RTL8139State),
3256 VMSTATE_UINT8(Config3, RTL8139State),
3257 VMSTATE_UINT8(Config4, RTL8139State),
3258 VMSTATE_UINT8(Config5, RTL8139State),
3259
3260 VMSTATE_UINT8(clock_enabled, RTL8139State),
3261 VMSTATE_UINT8(bChipCmdState, RTL8139State),
3262
3263 VMSTATE_UINT16(MultiIntr, RTL8139State),
3264
3265 VMSTATE_UINT16(BasicModeCtrl, RTL8139State),
3266 VMSTATE_UINT16(BasicModeStatus, RTL8139State),
3267 VMSTATE_UINT16(NWayAdvert, RTL8139State),
3268 VMSTATE_UINT16(NWayLPAR, RTL8139State),
3269 VMSTATE_UINT16(NWayExpansion, RTL8139State),
3270
3271 VMSTATE_UINT16(CpCmd, RTL8139State),
3272 VMSTATE_UINT8(TxThresh, RTL8139State),
3273
3274 VMSTATE_UNUSED(4),
3275 VMSTATE_MACADDR(conf.macaddr, RTL8139State),
3276 VMSTATE_INT32(rtl8139_mmio_io_addr_dummy, RTL8139State),
3277
3278 VMSTATE_UINT32(currTxDesc, RTL8139State),
3279 VMSTATE_UINT32(currCPlusRxDesc, RTL8139State),
3280 VMSTATE_UINT32(currCPlusTxDesc, RTL8139State),
3281 VMSTATE_UINT32(RxRingAddrLO, RTL8139State),
3282 VMSTATE_UINT32(RxRingAddrHI, RTL8139State),
3283
3284 VMSTATE_UINT16_ARRAY(eeprom.contents, RTL8139State, EEPROM_9346_SIZE),
3285 VMSTATE_INT32(eeprom.mode, RTL8139State),
3286 VMSTATE_UINT32(eeprom.tick, RTL8139State),
3287 VMSTATE_UINT8(eeprom.address, RTL8139State),
3288 VMSTATE_UINT16(eeprom.input, RTL8139State),
3289 VMSTATE_UINT16(eeprom.output, RTL8139State),
3290
3291 VMSTATE_UINT8(eeprom.eecs, RTL8139State),
3292 VMSTATE_UINT8(eeprom.eesk, RTL8139State),
3293 VMSTATE_UINT8(eeprom.eedi, RTL8139State),
3294 VMSTATE_UINT8(eeprom.eedo, RTL8139State),
3295
3296 VMSTATE_UINT32(TCTR, RTL8139State),
3297 VMSTATE_UINT32(TimerInt, RTL8139State),
3298 VMSTATE_INT64(TCTR_base, RTL8139State),
3299
3300 VMSTATE_STRUCT(tally_counters, RTL8139State, 0,
3301 vmstate_tally_counters, RTL8139TallyCounters),
3302
3303 VMSTATE_UINT32_V(cplus_enabled, RTL8139State, 4),
3304 VMSTATE_END_OF_LIST()
3305 },
3306 .subsections = (const VMStateDescription*[]) {
3307 &vmstate_rtl8139_hotplug_ready,
3308 NULL
3309 }
3310 };
3311
3312 /***********************************************************/
3313 /* PCI RTL8139 definitions */
3314
3315 static void rtl8139_ioport_write(void *opaque, hwaddr addr,
3316 uint64_t val, unsigned size)
3317 {
3318 switch (size) {
3319 case 1:
3320 rtl8139_io_writeb(opaque, addr, val);
3321 break;
3322 case 2:
3323 rtl8139_io_writew(opaque, addr, val);
3324 break;
3325 case 4:
3326 rtl8139_io_writel(opaque, addr, val);
3327 break;
3328 }
3329 }
3330
3331 static uint64_t rtl8139_ioport_read(void *opaque, hwaddr addr,
3332 unsigned size)
3333 {
3334 switch (size) {
3335 case 1:
3336 return rtl8139_io_readb(opaque, addr);
3337 case 2:
3338 return rtl8139_io_readw(opaque, addr);
3339 case 4:
3340 return rtl8139_io_readl(opaque, addr);
3341 }
3342
3343 return -1;
3344 }
3345
3346 static const MemoryRegionOps rtl8139_io_ops = {
3347 .read = rtl8139_ioport_read,
3348 .write = rtl8139_ioport_write,
3349 .impl = {
3350 .min_access_size = 1,
3351 .max_access_size = 4,
3352 },
3353 .endianness = DEVICE_LITTLE_ENDIAN,
3354 };
3355
3356 static const MemoryRegionOps rtl8139_mmio_ops = {
3357 .old_mmio = {
3358 .read = {
3359 rtl8139_mmio_readb,
3360 rtl8139_mmio_readw,
3361 rtl8139_mmio_readl,
3362 },
3363 .write = {
3364 rtl8139_mmio_writeb,
3365 rtl8139_mmio_writew,
3366 rtl8139_mmio_writel,
3367 },
3368 },
3369 .endianness = DEVICE_LITTLE_ENDIAN,
3370 };
3371
3372 static void rtl8139_timer(void *opaque)
3373 {
3374 RTL8139State *s = opaque;
3375
3376 if (!s->clock_enabled)
3377 {
3378 DPRINTF(">>> timer: clock is not running\n");
3379 return;
3380 }
3381
3382 s->IntrStatus |= PCSTimeout;
3383 rtl8139_update_irq(s);
3384 rtl8139_set_next_tctr_time(s);
3385 }
3386
3387 static void pci_rtl8139_uninit(PCIDevice *dev)
3388 {
3389 RTL8139State *s = RTL8139(dev);
3390
3391 g_free(s->cplus_txbuffer);
3392 s->cplus_txbuffer = NULL;
3393 timer_del(s->timer);
3394 timer_free(s->timer);
3395 qemu_del_nic(s->nic);
3396 }
3397
3398 static void rtl8139_set_link_status(NetClientState *nc)
3399 {
3400 RTL8139State *s = qemu_get_nic_opaque(nc);
3401
3402 if (nc->link_down) {
3403 s->BasicModeStatus &= ~0x04;
3404 } else {
3405 s->BasicModeStatus |= 0x04;
3406 }
3407
3408 s->IntrStatus |= RxUnderrun;
3409 rtl8139_update_irq(s);
3410 }
3411
3412 static NetClientInfo net_rtl8139_info = {
3413 .type = NET_CLIENT_OPTIONS_KIND_NIC,
3414 .size = sizeof(NICState),
3415 .can_receive = rtl8139_can_receive,
3416 .receive = rtl8139_receive,
3417 .link_status_changed = rtl8139_set_link_status,
3418 };
3419
3420 static void pci_rtl8139_realize(PCIDevice *dev, Error **errp)
3421 {
3422 RTL8139State *s = RTL8139(dev);
3423 DeviceState *d = DEVICE(dev);
3424 uint8_t *pci_conf;
3425
3426 pci_conf = dev->config;
3427 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */
3428 /* TODO: start of capability list, but no capability
3429 * list bit in status register, and offset 0xdc seems unused. */
3430 pci_conf[PCI_CAPABILITY_LIST] = 0xdc;
3431
3432 memory_region_init_io(&s->bar_io, OBJECT(s), &rtl8139_io_ops, s,
3433 "rtl8139", 0x100);
3434 memory_region_init_io(&s->bar_mem, OBJECT(s), &rtl8139_mmio_ops, s,
3435 "rtl8139", 0x100);
3436 pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->bar_io);
3437 pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar_mem);
3438
3439 qemu_macaddr_default_if_unset(&s->conf.macaddr);
3440
3441 /* prepare eeprom */
3442 s->eeprom.contents[0] = 0x8129;
3443 #if 1
3444 /* PCI vendor and device ID should be mirrored here */
3445 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
3446 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
3447 #endif
3448 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
3449 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
3450 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
3451
3452 s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf,
3453 object_get_typename(OBJECT(dev)), d->id, s);
3454 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
3455
3456 s->cplus_txbuffer = NULL;
3457 s->cplus_txbuffer_len = 0;
3458 s->cplus_txbuffer_offset = 0;
3459
3460 s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, rtl8139_timer, s);
3461 }
3462
3463 static void rtl8139_instance_init(Object *obj)
3464 {
3465 RTL8139State *s = RTL8139(obj);
3466
3467 device_add_bootindex_property(obj, &s->conf.bootindex,
3468 "bootindex", "/ethernet-phy@0",
3469 DEVICE(obj), NULL);
3470 }
3471
3472 static Property rtl8139_properties[] = {
3473 DEFINE_NIC_PROPERTIES(RTL8139State, conf),
3474 DEFINE_PROP_END_OF_LIST(),
3475 };
3476
3477 static void rtl8139_class_init(ObjectClass *klass, void *data)
3478 {
3479 DeviceClass *dc = DEVICE_CLASS(klass);
3480 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
3481
3482 k->realize = pci_rtl8139_realize;
3483 k->exit = pci_rtl8139_uninit;
3484 k->romfile = "efi-rtl8139.rom";
3485 k->vendor_id = PCI_VENDOR_ID_REALTEK;
3486 k->device_id = PCI_DEVICE_ID_REALTEK_8139;
3487 k->revision = RTL8139_PCI_REVID; /* >=0x20 is for 8139C+ */
3488 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
3489 dc->reset = rtl8139_reset;
3490 dc->vmsd = &vmstate_rtl8139;
3491 dc->props = rtl8139_properties;
3492 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
3493 }
3494
3495 static const TypeInfo rtl8139_info = {
3496 .name = TYPE_RTL8139,
3497 .parent = TYPE_PCI_DEVICE,
3498 .instance_size = sizeof(RTL8139State),
3499 .class_init = rtl8139_class_init,
3500 .instance_init = rtl8139_instance_init,
3501 };
3502
3503 static void rtl8139_register_types(void)
3504 {
3505 type_register_static(&rtl8139_info);
3506 }
3507
3508 type_init(rtl8139_register_types)
AR7 emulation for QEMU