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Merge git://github.com/hw-claudio/qemu-aarch64-queue into tcg-next
[qemu.git] / hw / net / rtl8139.c
CommitLineData
a41b2ff2
PB		 1/**
2 * QEMU RTL8139 emulation
5fafdf24 3 *
a41b2ff2 4 * Copyright (c) 2006 Igor Kovalenko
5fafdf24 5 *
a41b2ff2
PB		 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.
5fafdf24 23
a41b2ff2
PB		 24 * Modifications:
25 * 2006-Jan-28 Mark Malakanov : TSAD and CSCR implementation (for Windows driver)
5fafdf24 26 *
6cadb320
FB		 27 * 2006-Apr-28 Juergen Lock : EEPROM emulation changes for FreeBSD driver
28 * HW revision ID changes for FreeBSD driver
5fafdf24 29 *
6cadb320
FB		 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
718da2b9
FB		 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
05447803
FZ		 44 *
45 * 2010-Feb-04 Frediano Ziglio: Rewrote timer support using QEMU timer only
46 * when strictly needed (required for for
47 * Darwin)
bf6b87a8 48 * 2011-Mar-22 Benjamin Poirier: Implemented VLAN offloading
a41b2ff2
PB		 49 */
50
2c406b8f
BP		 51/* For crc32 */
52#include <zlib.h>
53
83c9f4ca
PB		 54#include "hw/hw.h"
55#include "hw/pci/pci.h"
9c17d615 56#include "sysemu/dma.h"
1de7afc9 57#include "qemu/timer.h"
1422e32d 58#include "net/net.h"
83c9f4ca 59#include "hw/loader.h"
9c17d615 60#include "sysemu/sysemu.h"
1de7afc9 61#include "qemu/iov.h"
a41b2ff2 62
a41b2ff2
PB		 63/* debug RTL8139 card */
64//#define DEBUG_RTL8139 1
65
6cadb320
FB		 66#define PCI_FREQUENCY 33000000L
67
a41b2ff2
PB		 68#define SET_MASKED(input, mask, curr) \
69 ( ( (input) & ~(mask) ) | ( (curr) & (mask) ) )
70
71/* arg % size for size which is a power of 2 */
72#define MOD2(input, size) \
73 ( ( input ) & ( size - 1 ) )
74
18dabfd1
BP		 75#define ETHER_ADDR_LEN 6
76#define ETHER_TYPE_LEN 2
77#define ETH_HLEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
78#define ETH_P_IP 0x0800 /* Internet Protocol packet */
79#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
80#define ETH_MTU 1500
81
82#define VLAN_TCI_LEN 2
83#define VLAN_HLEN (ETHER_TYPE_LEN + VLAN_TCI_LEN)
84
6cadb320 85#if defined (DEBUG_RTL8139)
7cdeb319
BP		 86# define DPRINTF(fmt, ...) \
87 do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0)
6cadb320 88#else
c6a0487b 89static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...)
ec48c774
BP		 90{
91 return 0;
92}
6cadb320
FB		 93#endif
94
a41b2ff2
PB		 95/* Symbolic offsets to registers. */
96enum RTL8139_registers {
97 MAC0 = 0, /* Ethernet hardware address. */
98 MAR0 = 8, /* Multicast filter. */
6cadb320
FB		 99 TxStatus0 = 0x10,/* Transmit status (Four 32bit registers). C mode only */
100 /* Dump Tally Conter control register(64bit). C+ mode only */
101 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
a41b2ff2
PB		 102 RxBuf = 0x30,
103 ChipCmd = 0x37,
104 RxBufPtr = 0x38,
105 RxBufAddr = 0x3A,
106 IntrMask = 0x3C,
107 IntrStatus = 0x3E,
108 TxConfig = 0x40,
109 RxConfig = 0x44,
110 Timer = 0x48, /* A general-purpose counter. */
111 RxMissed = 0x4C, /* 24 bits valid, write clears. */
112 Cfg9346 = 0x50,
113 Config0 = 0x51,
114 Config1 = 0x52,
115 FlashReg = 0x54,
116 MediaStatus = 0x58,
117 Config3 = 0x59,
118 Config4 = 0x5A, /* absent on RTL-8139A */
119 HltClk = 0x5B,
120 MultiIntr = 0x5C,
121 PCIRevisionID = 0x5E,
122 TxSummary = 0x60, /* TSAD register. Transmit Status of All Descriptors*/
123 BasicModeCtrl = 0x62,
124 BasicModeStatus = 0x64,
125 NWayAdvert = 0x66,
126 NWayLPAR = 0x68,
127 NWayExpansion = 0x6A,
128 /* Undocumented registers, but required for proper operation. */
129 FIFOTMS = 0x70, /* FIFO Control and test. */
130 CSCR = 0x74, /* Chip Status and Configuration Register. */
131 PARA78 = 0x78,
132 PARA7c = 0x7c, /* Magic transceiver parameter register. */
133 Config5 = 0xD8, /* absent on RTL-8139A */
134 /* C+ mode */
135 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
136 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
137 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
138 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
139 RxRingAddrLO = 0xE4, /* 64-bit start addr of Rx ring */
140 RxRingAddrHI = 0xE8, /* 64-bit start addr of Rx ring */
141 TxThresh = 0xEC, /* Early Tx threshold */
142};
143
144enum ClearBitMasks {
145 MultiIntrClear = 0xF000,
146 ChipCmdClear = 0xE2,
147 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
148};
149
150enum ChipCmdBits {
151 CmdReset = 0x10,
152 CmdRxEnb = 0x08,
153 CmdTxEnb = 0x04,
154 RxBufEmpty = 0x01,
155};
156
157/* C+ mode */
158enum CplusCmdBits {
6cadb320
FB		 159 CPlusRxVLAN = 0x0040, /* enable receive VLAN detagging */
160 CPlusRxChkSum = 0x0020, /* enable receive checksum offloading */
161 CPlusRxEnb = 0x0002,
162 CPlusTxEnb = 0x0001,
a41b2ff2
PB		 163};
164
165/* Interrupt register bits, using my own meaningful names. */
166enum IntrStatusBits {
167 PCIErr = 0x8000,
168 PCSTimeout = 0x4000,
169 RxFIFOOver = 0x40,
9e12c5af 170 RxUnderrun = 0x20, /* Packet Underrun / Link Change */
a41b2ff2
PB		 171 RxOverflow = 0x10,
172 TxErr = 0x08,
173 TxOK = 0x04,
174 RxErr = 0x02,
175 RxOK = 0x01,
176
177 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
178};
179
180enum TxStatusBits {
181 TxHostOwns = 0x2000,
182 TxUnderrun = 0x4000,
183 TxStatOK = 0x8000,
184 TxOutOfWindow = 0x20000000,
185 TxAborted = 0x40000000,
186 TxCarrierLost = 0x80000000,
187};
188enum RxStatusBits {
189 RxMulticast = 0x8000,
190 RxPhysical = 0x4000,
191 RxBroadcast = 0x2000,
192 RxBadSymbol = 0x0020,
193 RxRunt = 0x0010,
194 RxTooLong = 0x0008,
195 RxCRCErr = 0x0004,
196 RxBadAlign = 0x0002,
197 RxStatusOK = 0x0001,
198};
199
200/* Bits in RxConfig. */
201enum rx_mode_bits {
202 AcceptErr = 0x20,
203 AcceptRunt = 0x10,
204 AcceptBroadcast = 0x08,
205 AcceptMulticast = 0x04,
206 AcceptMyPhys = 0x02,
207 AcceptAllPhys = 0x01,
208};
209
210/* Bits in TxConfig. */
211enum tx_config_bits {
212
213 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
214 TxIFGShift = 24,
215 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
216 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
217 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
218 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
219
220 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
221 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
222 TxClearAbt = (1 << 0), /* Clear abort (WO) */
223 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
224 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
225
226 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
227};
228
229
230/* Transmit Status of All Descriptors (TSAD) Register */
231enum TSAD_bits {
232 TSAD_TOK3 = 1<<15, // TOK bit of Descriptor 3
233 TSAD_TOK2 = 1<<14, // TOK bit of Descriptor 2
234 TSAD_TOK1 = 1<<13, // TOK bit of Descriptor 1
235 TSAD_TOK0 = 1<<12, // TOK bit of Descriptor 0
236 TSAD_TUN3 = 1<<11, // TUN bit of Descriptor 3
237 TSAD_TUN2 = 1<<10, // TUN bit of Descriptor 2
238 TSAD_TUN1 = 1<<9, // TUN bit of Descriptor 1
239 TSAD_TUN0 = 1<<8, // TUN bit of Descriptor 0
240 TSAD_TABT3 = 1<<07, // TABT bit of Descriptor 3
241 TSAD_TABT2 = 1<<06, // TABT bit of Descriptor 2
242 TSAD_TABT1 = 1<<05, // TABT bit of Descriptor 1
243 TSAD_TABT0 = 1<<04, // TABT bit of Descriptor 0
244 TSAD_OWN3 = 1<<03, // OWN bit of Descriptor 3
245 TSAD_OWN2 = 1<<02, // OWN bit of Descriptor 2
246 TSAD_OWN1 = 1<<01, // OWN bit of Descriptor 1
247 TSAD_OWN0 = 1<<00, // OWN bit of Descriptor 0
248};
249
250
251/* Bits in Config1 */
252enum Config1Bits {
253 Cfg1_PM_Enable = 0x01,
254 Cfg1_VPD_Enable = 0x02,
255 Cfg1_PIO = 0x04,
256 Cfg1_MMIO = 0x08,
257 LWAKE = 0x10, /* not on 8139, 8139A */
258 Cfg1_Driver_Load = 0x20,
259 Cfg1_LED0 = 0x40,
260 Cfg1_LED1 = 0x80,
261 SLEEP = (1 << 1), /* only on 8139, 8139A */
262 PWRDN = (1 << 0), /* only on 8139, 8139A */
263};
264
265/* Bits in Config3 */
266enum Config3Bits {
267 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
268 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
269 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
270 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
271 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
272 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
273 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
274 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
275};
276
277/* Bits in Config4 */
278enum Config4Bits {
279 LWPTN = (1 << 2), /* not on 8139, 8139A */
280};
281
282/* Bits in Config5 */
283enum Config5Bits {
284 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
285 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
286 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
287 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
288 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
289 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
290 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
291};
292
293enum RxConfigBits {
294 /* rx fifo threshold */
295 RxCfgFIFOShift = 13,
296 RxCfgFIFONone = (7 << RxCfgFIFOShift),
297
298 /* Max DMA burst */
299 RxCfgDMAShift = 8,
300 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
301
302 /* rx ring buffer length */
303 RxCfgRcv8K = 0,
304 RxCfgRcv16K = (1 << 11),
305 RxCfgRcv32K = (1 << 12),
306 RxCfgRcv64K = (1 << 11) | (1 << 12),
307
308 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
309 RxNoWrap = (1 << 7),
310};
311
312/* Twister tuning parameters from RealTek.
313 Completely undocumented, but required to tune bad links on some boards. */
314/*
315enum CSCRBits {
316 CSCR_LinkOKBit = 0x0400,
317 CSCR_LinkChangeBit = 0x0800,
318 CSCR_LinkStatusBits = 0x0f000,
319 CSCR_LinkDownOffCmd = 0x003c0,
320 CSCR_LinkDownCmd = 0x0f3c0,
321*/
322enum CSCRBits {
5fafdf24 323 CSCR_Testfun = 1<<15, /* 1 = Auto-neg speeds up internal timer, WO, def 0 */
a41b2ff2
PB		 324 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*/
325 CSCR_HEART_BIT = 1<<8, /* 1 = HEART BEAT enable, 0 = HEART BEAT disable. HEART BEAT function is only valid in 10Mbps mode. def 1*/
326 CSCR_JBEN = 1<<7, /* 1 = enable jabber function. 0 = disable jabber function, def 1*/
5fafdf24 327 CSCR_F_LINK_100 = 1<<6, /* Used to login force good link in 100Mbps for diagnostic purposes. 1 = DISABLE, 0 = ENABLE. def 1*/
a41b2ff2
PB		 328 CSCR_F_Connect = 1<<5, /* Assertion of this bit forces the disconnect function to be bypassed. def 0*/
329 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*/
330 CSCR_Con_status_En = 1<<2, /* Assertion of this bit configures LED1 pin to indicate connection status. def 0*/
331 CSCR_PASS_SCR = 1<<0, /* Bypass Scramble, def 0*/
332};
333
334enum Cfg9346Bits {
eb46c5ed
JW		 335 Cfg9346_Normal = 0x00,
336 Cfg9346_Autoload = 0x40,
337 Cfg9346_Programming = 0x80,
338 Cfg9346_ConfigWrite = 0xC0,
a41b2ff2
PB		 339};
340
341typedef enum {
342 CH_8139 = 0,
343 CH_8139_K,
344 CH_8139A,
345 CH_8139A_G,
346 CH_8139B,
347 CH_8130,
348 CH_8139C,
349 CH_8100,
350 CH_8100B_8139D,
351 CH_8101,
c227f099 352} chip_t;
a41b2ff2
PB		 353
354enum chip_flags {
355 HasHltClk = (1 << 0),
356 HasLWake = (1 << 1),
357};
358
359#define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
360 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
361#define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
362
6cadb320
FB		 363#define RTL8139_PCI_REVID_8139 0x10
364#define RTL8139_PCI_REVID_8139CPLUS 0x20
365
366#define RTL8139_PCI_REVID RTL8139_PCI_REVID_8139CPLUS
367
a41b2ff2
PB		 368/* Size is 64 * 16bit words */
369#define EEPROM_9346_ADDR_BITS 6
370#define EEPROM_9346_SIZE (1 << EEPROM_9346_ADDR_BITS)
371#define EEPROM_9346_ADDR_MASK (EEPROM_9346_SIZE - 1)
372
373enum Chip9346Operation
374{
375 Chip9346_op_mask = 0xc0, /* 10 zzzzzz */
376 Chip9346_op_read = 0x80, /* 10 AAAAAA */
377 Chip9346_op_write = 0x40, /* 01 AAAAAA D(15)..D(0) */
378 Chip9346_op_ext_mask = 0xf0, /* 11 zzzzzz */
379 Chip9346_op_write_enable = 0x30, /* 00 11zzzz */
380 Chip9346_op_write_all = 0x10, /* 00 01zzzz */
381 Chip9346_op_write_disable = 0x00, /* 00 00zzzz */
382};
383
384enum Chip9346Mode
385{
386 Chip9346_none = 0,
387 Chip9346_enter_command_mode,
388 Chip9346_read_command,
389 Chip9346_data_read, /* from output register */
390 Chip9346_data_write, /* to input register, then to contents at specified address */
391 Chip9346_data_write_all, /* to input register, then filling contents */
392};
393
394typedef struct EEprom9346
395{
396 uint16_t contents[EEPROM_9346_SIZE];
397 int mode;
398 uint32_t tick;
399 uint8_t address;
400 uint16_t input;
401 uint16_t output;
402
403 uint8_t eecs;
404 uint8_t eesk;
405 uint8_t eedi;
406 uint8_t eedo;
407} EEprom9346;
408
6cadb320
FB		 409typedef struct RTL8139TallyCounters
410{
411 /* Tally counters */
412 uint64_t TxOk;
413 uint64_t RxOk;
414 uint64_t TxERR;
415 uint32_t RxERR;
416 uint16_t MissPkt;
417 uint16_t FAE;
418 uint32_t Tx1Col;
419 uint32_t TxMCol;
420 uint64_t RxOkPhy;
421 uint64_t RxOkBrd;
422 uint32_t RxOkMul;
423 uint16_t TxAbt;
424 uint16_t TxUndrn;
425} RTL8139TallyCounters;
426
427/* Clears all tally counters */
428static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters);
429
a41b2ff2 430typedef struct RTL8139State {
efd6dd45 431 PCIDevice dev;
a41b2ff2
PB		 432 uint8_t phys[8]; /* mac address */
433 uint8_t mult[8]; /* multicast mask array */
434
6cadb320 435 uint32_t TxStatus[4]; /* TxStatus0 in C mode*/ /* also DTCCR[0] and DTCCR[1] in C+ mode */
a41b2ff2
PB		 436 uint32_t TxAddr[4]; /* TxAddr0 */
437 uint32_t RxBuf; /* Receive buffer */
438 uint32_t RxBufferSize;/* internal variable, receive ring buffer size in C mode */
439 uint32_t RxBufPtr;
440 uint32_t RxBufAddr;
441
442 uint16_t IntrStatus;
443 uint16_t IntrMask;
444
445 uint32_t TxConfig;
446 uint32_t RxConfig;
447 uint32_t RxMissed;
448
449 uint16_t CSCR;
450
451 uint8_t Cfg9346;
452 uint8_t Config0;
453 uint8_t Config1;
454 uint8_t Config3;
455 uint8_t Config4;
456 uint8_t Config5;
457
458 uint8_t clock_enabled;
459 uint8_t bChipCmdState;
460
461 uint16_t MultiIntr;
462
463 uint16_t BasicModeCtrl;
464 uint16_t BasicModeStatus;
465 uint16_t NWayAdvert;
466 uint16_t NWayLPAR;
467 uint16_t NWayExpansion;
468
469 uint16_t CpCmd;
470 uint8_t TxThresh;
471
1673ad51 472 NICState *nic;
254111ec 473 NICConf conf;
a41b2ff2
PB		 474
475 /* C ring mode */
476 uint32_t currTxDesc;
477
478 /* C+ mode */
2c3891ab
AL		 479 uint32_t cplus_enabled;
480
a41b2ff2
PB		 481 uint32_t currCPlusRxDesc;
482 uint32_t currCPlusTxDesc;
483
484 uint32_t RxRingAddrLO;
485 uint32_t RxRingAddrHI;
486
487 EEprom9346 eeprom;
6cadb320
FB		 488
489 uint32_t TCTR;
490 uint32_t TimerInt;
491 int64_t TCTR_base;
492
493 /* Tally counters */
494 RTL8139TallyCounters tally_counters;
495
496 /* Non-persistent data */
497 uint8_t *cplus_txbuffer;
498 int cplus_txbuffer_len;
499 int cplus_txbuffer_offset;
500
501 /* PCI interrupt timer */
502 QEMUTimer *timer;
05447803 503 int64_t TimerExpire;
6cadb320 504
bd80f3fc
AK		 505 MemoryRegion bar_io;
506 MemoryRegion bar_mem;
507
c574ba5a
AW		 508 /* Support migration to/from old versions */
509 int rtl8139_mmio_io_addr_dummy;
a41b2ff2
PB		 510} RTL8139State;
511
3ada003a
EGM		 512/* Writes tally counters to memory via DMA */
513static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr);
514
05447803
FZ		 515static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time);
516
9596ebb7 517static void prom9346_decode_command(EEprom9346 *eeprom, uint8_t command)
a41b2ff2 518{
7cdeb319 519 DPRINTF("eeprom command 0x%02x\n", command);
a41b2ff2
PB		 520
521 switch (command & Chip9346_op_mask)
522 {
523 case Chip9346_op_read:
524 {
525 eeprom->address = command & EEPROM_9346_ADDR_MASK;
526 eeprom->output = eeprom->contents[eeprom->address];
527 eeprom->eedo = 0;
528 eeprom->tick = 0;
529 eeprom->mode = Chip9346_data_read;
7cdeb319
BP		 530 DPRINTF("eeprom read from address 0x%02x data=0x%04x\n",
531 eeprom->address, eeprom->output);
a41b2ff2
PB		 532 }
533 break;
534
535 case Chip9346_op_write:
536 {
537 eeprom->address = command & EEPROM_9346_ADDR_MASK;
538 eeprom->input = 0;
539 eeprom->tick = 0;
540 eeprom->mode = Chip9346_none; /* Chip9346_data_write */
7cdeb319
BP		 541 DPRINTF("eeprom begin write to address 0x%02x\n",
542 eeprom->address);
a41b2ff2
PB		 543 }
544 break;
545 default:
546 eeprom->mode = Chip9346_none;
547 switch (command & Chip9346_op_ext_mask)
548 {
549 case Chip9346_op_write_enable:
7cdeb319 550 DPRINTF("eeprom write enabled\n");
a41b2ff2
PB		 551 break;
552 case Chip9346_op_write_all:
7cdeb319 553 DPRINTF("eeprom begin write all\n");
a41b2ff2
PB		 554 break;
555 case Chip9346_op_write_disable:
7cdeb319 556 DPRINTF("eeprom write disabled\n");
a41b2ff2
PB		 557 break;
558 }
559 break;
560 }
561}
562
9596ebb7 563static void prom9346_shift_clock(EEprom9346 *eeprom)
a41b2ff2
PB		 564{
565 int bit = eeprom->eedi?1:0;
566
567 ++ eeprom->tick;
568
7cdeb319
BP		 569 DPRINTF("eeprom: tick %d eedi=%d eedo=%d\n", eeprom->tick, eeprom->eedi,
570 eeprom->eedo);
a41b2ff2
PB		 571
572 switch (eeprom->mode)
573 {
574 case Chip9346_enter_command_mode:
575 if (bit)
576 {
577 eeprom->mode = Chip9346_read_command;
578 eeprom->tick = 0;
579 eeprom->input = 0;
7cdeb319 580 DPRINTF("eeprom: +++ synchronized, begin command read\n");
a41b2ff2
PB		 581 }
582 break;
583
584 case Chip9346_read_command:
585 eeprom->input = (eeprom->input << 1) | (bit & 1);
586 if (eeprom->tick == 8)
587 {
588 prom9346_decode_command(eeprom, eeprom->input & 0xff);
589 }
590 break;
591
592 case Chip9346_data_read:
593 eeprom->eedo = (eeprom->output & 0x8000)?1:0;
594 eeprom->output <<= 1;
595 if (eeprom->tick == 16)
596 {
6cadb320
FB		 597#if 1
598 // the FreeBSD drivers (rl and re) don't explicitly toggle
599 // CS between reads (or does setting Cfg9346 to 0 count too?),
600 // so we need to enter wait-for-command state here
601 eeprom->mode = Chip9346_enter_command_mode;
602 eeprom->input = 0;
603 eeprom->tick = 0;
604
7cdeb319 605 DPRINTF("eeprom: +++ end of read, awaiting next command\n");
6cadb320
FB		 606#else
607 // original behaviour
a41b2ff2
PB		 608 ++eeprom->address;
609 eeprom->address &= EEPROM_9346_ADDR_MASK;
610 eeprom->output = eeprom->contents[eeprom->address];
611 eeprom->tick = 0;
612
7cdeb319
BP		 613 DPRINTF("eeprom: +++ read next address 0x%02x data=0x%04x\n",
614 eeprom->address, eeprom->output);
a41b2ff2
PB		 615#endif
616 }
617 break;
618
619 case Chip9346_data_write:
620 eeprom->input = (eeprom->input << 1) | (bit & 1);
621 if (eeprom->tick == 16)
622 {
7cdeb319
BP		 623 DPRINTF("eeprom write to address 0x%02x data=0x%04x\n",
624 eeprom->address, eeprom->input);
6cadb320 625
a41b2ff2
PB		 626 eeprom->contents[eeprom->address] = eeprom->input;
627 eeprom->mode = Chip9346_none; /* waiting for next command after CS cycle */
628 eeprom->tick = 0;
629 eeprom->input = 0;
630 }
631 break;
632
633 case Chip9346_data_write_all:
634 eeprom->input = (eeprom->input << 1) | (bit & 1);
635 if (eeprom->tick == 16)
636 {
637 int i;
638 for (i = 0; i < EEPROM_9346_SIZE; i++)
639 {
640 eeprom->contents[i] = eeprom->input;
641 }
7cdeb319 642 DPRINTF("eeprom filled with data=0x%04x\n", eeprom->input);
6cadb320 643
a41b2ff2
PB		 644 eeprom->mode = Chip9346_enter_command_mode;
645 eeprom->tick = 0;
646 eeprom->input = 0;
647 }
648 break;
649
650 default:
651 break;
652 }
653}
654
9596ebb7 655static int prom9346_get_wire(RTL8139State *s)
a41b2ff2
PB		 656{
657 EEprom9346 *eeprom = &s->eeprom;
658 if (!eeprom->eecs)
659 return 0;
660
661 return eeprom->eedo;
662}
663
9596ebb7
PB		 664/* FIXME: This should be merged into/replaced by eeprom93xx.c. */
665static void prom9346_set_wire(RTL8139State *s, int eecs, int eesk, int eedi)
a41b2ff2
PB		 666{
667 EEprom9346 *eeprom = &s->eeprom;
668 uint8_t old_eecs = eeprom->eecs;
669 uint8_t old_eesk = eeprom->eesk;
670
671 eeprom->eecs = eecs;
672 eeprom->eesk = eesk;
673 eeprom->eedi = eedi;
674
7cdeb319
BP		 675 DPRINTF("eeprom: +++ wires CS=%d SK=%d DI=%d DO=%d\n", eeprom->eecs,
676 eeprom->eesk, eeprom->eedi, eeprom->eedo);
a41b2ff2
PB		 677
678 if (!old_eecs && eecs)
679 {
680 /* Synchronize start */
681 eeprom->tick = 0;
682 eeprom->input = 0;
683 eeprom->output = 0;
684 eeprom->mode = Chip9346_enter_command_mode;
685
7cdeb319 686 DPRINTF("=== eeprom: begin access, enter command mode\n");
a41b2ff2
PB		 687 }
688
689 if (!eecs)
690 {
7cdeb319 691 DPRINTF("=== eeprom: end access\n");
a41b2ff2
PB		 692 return;
693 }
694
695 if (!old_eesk && eesk)
696 {
697 /* SK front rules */
698 prom9346_shift_clock(eeprom);
699 }
700}
701
702static void rtl8139_update_irq(RTL8139State *s)
703{
704 int isr;
705 isr = (s->IntrStatus & s->IntrMask) & 0xffff;
6cadb320 706
7cdeb319
BP		 707 DPRINTF("Set IRQ to %d (%04x %04x)\n", isr ? 1 : 0, s->IntrStatus,
708 s->IntrMask);
6cadb320 709
efd6dd45 710 qemu_set_irq(s->dev.irq[0], (isr != 0));
a41b2ff2
PB		 711}
712
a41b2ff2
PB		 713static int rtl8139_RxWrap(RTL8139State *s)
714{
715 /* wrapping enabled; assume 1.5k more buffer space if size < 65536 */
716 return (s->RxConfig & (1 << 7));
717}
718
719static int rtl8139_receiver_enabled(RTL8139State *s)
720{
721 return s->bChipCmdState & CmdRxEnb;
722}
723
724static int rtl8139_transmitter_enabled(RTL8139State *s)
725{
726 return s->bChipCmdState & CmdTxEnb;
727}
728
729static int rtl8139_cp_receiver_enabled(RTL8139State *s)
730{
731 return s->CpCmd & CPlusRxEnb;
732}
733
734static int rtl8139_cp_transmitter_enabled(RTL8139State *s)
735{
736 return s->CpCmd & CPlusTxEnb;
737}
738
739static void rtl8139_write_buffer(RTL8139State *s, const void *buf, int size)
740{
741 if (s->RxBufAddr + size > s->RxBufferSize)
742 {
743 int wrapped = MOD2(s->RxBufAddr + size, s->RxBufferSize);
744
745 /* write packet data */
ccf1d14a 746 if (wrapped && !(s->RxBufferSize < 65536 && rtl8139_RxWrap(s)))
a41b2ff2 747 {
7cdeb319 748 DPRINTF(">>> rx packet wrapped in buffer at %d\n", size - wrapped);
a41b2ff2
PB		 749
750 if (size > wrapped)
751 {
3ada003a
EGM		 752 pci_dma_write(&s->dev, s->RxBuf + s->RxBufAddr,
753 buf, size-wrapped);
a41b2ff2
PB		 754 }
755
756 /* reset buffer pointer */
757 s->RxBufAddr = 0;
758
3ada003a
EGM		 759 pci_dma_write(&s->dev, s->RxBuf + s->RxBufAddr,
760 buf + (size-wrapped), wrapped);
a41b2ff2
PB		 761
762 s->RxBufAddr = wrapped;
763
764 return;
765 }
766 }
767
768 /* non-wrapping path or overwrapping enabled */
3ada003a 769 pci_dma_write(&s->dev, s->RxBuf + s->RxBufAddr, buf, size);
a41b2ff2
PB		 770
771 s->RxBufAddr += size;
772}
773
774#define MIN_BUF_SIZE 60
3ada003a 775static inline dma_addr_t rtl8139_addr64(uint32_t low, uint32_t high)
a41b2ff2 776{
4be403c8 777 return low | ((uint64_t)high << 32);
a41b2ff2
PB		 778}
779
fcce6fd2
JW		 780/* Workaround for buggy guest driver such as linux who allocates rx
781 * rings after the receiver were enabled. */
782static bool rtl8139_cp_rx_valid(RTL8139State *s)
783{
784 return !(s->RxRingAddrLO == 0 && s->RxRingAddrHI == 0);
785}
786
4e68f7a0 787static int rtl8139_can_receive(NetClientState *nc)
a41b2ff2 788{
cc1f0f45 789 RTL8139State *s = qemu_get_nic_opaque(nc);
a41b2ff2
PB		 790 int avail;
791
aa1f17c1 792 /* Receive (drop) packets if card is disabled. */
a41b2ff2
PB		 793 if (!s->clock_enabled)
794 return 1;
795 if (!rtl8139_receiver_enabled(s))
796 return 1;
797
fcce6fd2 798 if (rtl8139_cp_receiver_enabled(s) && rtl8139_cp_rx_valid(s)) {
a41b2ff2
PB		 799 /* ??? Flow control not implemented in c+ mode.
800 This is a hack to work around slirp deficiencies anyway. */
801 return 1;
802 } else {
803 avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr,
804 s->RxBufferSize);
fee9d348 805 return (avail == 0 || avail >= 1514 || (s->IntrMask & RxOverflow));
a41b2ff2
PB		 806 }
807}
808
4e68f7a0 809static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t size_, int do_interrupt)
a41b2ff2 810{
cc1f0f45 811 RTL8139State *s = qemu_get_nic_opaque(nc);
18dabfd1 812 /* size is the length of the buffer passed to the driver */
4f1c942b 813 int size = size_;
18dabfd1 814 const uint8_t *dot1q_buf = NULL;
a41b2ff2
PB		 815
816 uint32_t packet_header = 0;
817
18dabfd1 818 uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
5fafdf24 819 static const uint8_t broadcast_macaddr[6] =
a41b2ff2
PB		 820 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
821
7cdeb319 822 DPRINTF(">>> received len=%d\n", size);
a41b2ff2
PB		 823
824 /* test if board clock is stopped */
825 if (!s->clock_enabled)
826 {
7cdeb319 827 DPRINTF("stopped ==========================\n");
4f1c942b 828 return -1;
a41b2ff2
PB		 829 }
830
831 /* first check if receiver is enabled */
832
833 if (!rtl8139_receiver_enabled(s))
834 {
7cdeb319 835 DPRINTF("receiver disabled ================\n");
4f1c942b 836 return -1;
a41b2ff2
PB		 837 }
838
839 /* XXX: check this */
840 if (s->RxConfig & AcceptAllPhys) {
841 /* promiscuous: receive all */
7cdeb319 842 DPRINTF(">>> packet received in promiscuous mode\n");
a41b2ff2
PB		 843
844 } else {
845 if (!memcmp(buf, broadcast_macaddr, 6)) {
846 /* broadcast address */
847 if (!(s->RxConfig & AcceptBroadcast))
848 {
7cdeb319 849 DPRINTF(">>> broadcast packet rejected\n");
6cadb320
FB		 850
851 /* update tally counter */
852 ++s->tally_counters.RxERR;
853
4f1c942b 854 return size;
a41b2ff2
PB		 855 }
856
857 packet_header |= RxBroadcast;
858
7cdeb319 859 DPRINTF(">>> broadcast packet received\n");
6cadb320
FB		 860
861 /* update tally counter */
862 ++s->tally_counters.RxOkBrd;
863
a41b2ff2
PB		 864 } else if (buf[0] & 0x01) {
865 /* multicast */
866 if (!(s->RxConfig & AcceptMulticast))
867 {
7cdeb319 868 DPRINTF(">>> multicast packet rejected\n");
6cadb320
FB		 869
870 /* update tally counter */
871 ++s->tally_counters.RxERR;
872
4f1c942b 873 return size;
a41b2ff2
PB		 874 }
875
876 int mcast_idx = compute_mcast_idx(buf);
877
878 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
879 {
7cdeb319 880 DPRINTF(">>> multicast address mismatch\n");
6cadb320
FB		 881
882 /* update tally counter */
883 ++s->tally_counters.RxERR;
884
4f1c942b 885 return size;
a41b2ff2
PB		 886 }
887
888 packet_header |= RxMulticast;
889
7cdeb319 890 DPRINTF(">>> multicast packet received\n");
6cadb320
FB		 891
892 /* update tally counter */
893 ++s->tally_counters.RxOkMul;
894
a41b2ff2 895 } else if (s->phys[0] == buf[0] &&
3b46e624
TS		 896 s->phys[1] == buf[1] &&
897 s->phys[2] == buf[2] &&
898 s->phys[3] == buf[3] &&
899 s->phys[4] == buf[4] &&
a41b2ff2
PB		 900 s->phys[5] == buf[5]) {
901 /* match */
902 if (!(s->RxConfig & AcceptMyPhys))
903 {
7cdeb319 904 DPRINTF(">>> rejecting physical address matching packet\n");
6cadb320
FB		 905
906 /* update tally counter */
907 ++s->tally_counters.RxERR;
908
4f1c942b 909 return size;
a41b2ff2
PB		 910 }
911
912 packet_header |= RxPhysical;
913
7cdeb319 914 DPRINTF(">>> physical address matching packet received\n");
6cadb320
FB		 915
916 /* update tally counter */
917 ++s->tally_counters.RxOkPhy;
a41b2ff2
PB		 918
919 } else {
920
7cdeb319 921 DPRINTF(">>> unknown packet\n");
6cadb320
FB		 922
923 /* update tally counter */
924 ++s->tally_counters.RxERR;
925
4f1c942b 926 return size;
a41b2ff2
PB		 927 }
928 }
929
18dabfd1
BP		 930 /* if too small buffer, then expand it
931 * Include some tailroom in case a vlan tag is later removed. */
932 if (size < MIN_BUF_SIZE + VLAN_HLEN) {
a41b2ff2 933 memcpy(buf1, buf, size);
18dabfd1 934 memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
a41b2ff2 935 buf = buf1;
18dabfd1
BP		 936 if (size < MIN_BUF_SIZE) {
937 size = MIN_BUF_SIZE;
938 }
a41b2ff2
PB		 939 }
940
941 if (rtl8139_cp_receiver_enabled(s))
942 {
fcce6fd2
JW		 943 if (!rtl8139_cp_rx_valid(s)) {
944 return size;
945 }
946
7cdeb319 947 DPRINTF("in C+ Rx mode ================\n");
a41b2ff2
PB		 948
949 /* begin C+ receiver mode */
950
951/* w0 ownership flag */
952#define CP_RX_OWN (1<<31)
953/* w0 end of ring flag */
954#define CP_RX_EOR (1<<30)
955/* w0 bits 0...12 : buffer size */
956#define CP_RX_BUFFER_SIZE_MASK ((1<<13) - 1)
957/* w1 tag available flag */
958#define CP_RX_TAVA (1<<16)
959/* w1 bits 0...15 : VLAN tag */
960#define CP_RX_VLAN_TAG_MASK ((1<<16) - 1)
961/* w2 low 32bit of Rx buffer ptr */
962/* w3 high 32bit of Rx buffer ptr */
963
964 int descriptor = s->currCPlusRxDesc;
3ada003a 965 dma_addr_t cplus_rx_ring_desc;
a41b2ff2
PB		 966
967 cplus_rx_ring_desc = rtl8139_addr64(s->RxRingAddrLO, s->RxRingAddrHI);
968 cplus_rx_ring_desc += 16 * descriptor;
969
7cdeb319 970 DPRINTF("+++ C+ mode reading RX descriptor %d from host memory at "
3ada003a 971 "%08x %08x = "DMA_ADDR_FMT"\n", descriptor, s->RxRingAddrHI,
7cdeb319 972 s->RxRingAddrLO, cplus_rx_ring_desc);
a41b2ff2
PB		 973
974 uint32_t val, rxdw0,rxdw1,rxbufLO,rxbufHI;
975
a6a29eea 976 pci_dma_read(&s->dev, cplus_rx_ring_desc, &val, 4);
a41b2ff2 977 rxdw0 = le32_to_cpu(val);
a6a29eea 978 pci_dma_read(&s->dev, cplus_rx_ring_desc+4, &val, 4);
a41b2ff2 979 rxdw1 = le32_to_cpu(val);
a6a29eea 980 pci_dma_read(&s->dev, cplus_rx_ring_desc+8, &val, 4);
a41b2ff2 981 rxbufLO = le32_to_cpu(val);
a6a29eea 982 pci_dma_read(&s->dev, cplus_rx_ring_desc+12, &val, 4);
a41b2ff2
PB		 983 rxbufHI = le32_to_cpu(val);
984
7cdeb319
BP		 985 DPRINTF("+++ C+ mode RX descriptor %d %08x %08x %08x %08x\n",
986 descriptor, rxdw0, rxdw1, rxbufLO, rxbufHI);
a41b2ff2
PB		 987
988 if (!(rxdw0 & CP_RX_OWN))
989 {
7cdeb319
BP		 990 DPRINTF("C+ Rx mode : descriptor %d is owned by host\n",
991 descriptor);
6cadb320 992
a41b2ff2
PB		 993 s->IntrStatus |= RxOverflow;
994 ++s->RxMissed;
6cadb320
FB		 995
996 /* update tally counter */
997 ++s->tally_counters.RxERR;
998 ++s->tally_counters.MissPkt;
999
a41b2ff2 1000 rtl8139_update_irq(s);
4f1c942b 1001 return size_;
a41b2ff2
PB		 1002 }
1003
1004 uint32_t rx_space = rxdw0 & CP_RX_BUFFER_SIZE_MASK;
1005
18dabfd1
BP		 1006 /* write VLAN info to descriptor variables. */
1007 if (s->CpCmd & CPlusRxVLAN && be16_to_cpup((uint16_t *)
1008 &buf[ETHER_ADDR_LEN * 2]) == ETH_P_8021Q) {
1009 dot1q_buf = &buf[ETHER_ADDR_LEN * 2];
1010 size -= VLAN_HLEN;
1011 /* if too small buffer, use the tailroom added duing expansion */
1012 if (size < MIN_BUF_SIZE) {
1013 size = MIN_BUF_SIZE;
1014 }
1015
1016 rxdw1 &= ~CP_RX_VLAN_TAG_MASK;
1017 /* BE + ~le_to_cpu()~ + cpu_to_le() = BE */
1018 rxdw1 |= CP_RX_TAVA | le16_to_cpup((uint16_t *)
1019 &dot1q_buf[ETHER_TYPE_LEN]);
1020
7cdeb319
BP		 1021 DPRINTF("C+ Rx mode : extracted vlan tag with tci: ""%u\n",
1022 be16_to_cpup((uint16_t *)&dot1q_buf[ETHER_TYPE_LEN]));
18dabfd1
BP		 1023 } else {
1024 /* reset VLAN tag flag */
1025 rxdw1 &= ~CP_RX_TAVA;
1026 }
1027
6cadb320
FB		 1028 /* TODO: scatter the packet over available receive ring descriptors space */
1029
a41b2ff2
PB		 1030 if (size+4 > rx_space)
1031 {
7cdeb319
BP		 1032 DPRINTF("C+ Rx mode : descriptor %d size %d received %d + 4\n",
1033 descriptor, rx_space, size);
6cadb320 1034
a41b2ff2
PB		 1035 s->IntrStatus |= RxOverflow;
1036 ++s->RxMissed;
6cadb320
FB		 1037
1038 /* update tally counter */
1039 ++s->tally_counters.RxERR;
1040 ++s->tally_counters.MissPkt;
1041
a41b2ff2 1042 rtl8139_update_irq(s);
4f1c942b 1043 return size_;
a41b2ff2
PB		 1044 }
1045
3ada003a 1046 dma_addr_t rx_addr = rtl8139_addr64(rxbufLO, rxbufHI);
a41b2ff2
PB		 1047
1048 /* receive/copy to target memory */
18dabfd1 1049 if (dot1q_buf) {
3ada003a
EGM		 1050 pci_dma_write(&s->dev, rx_addr, buf, 2 * ETHER_ADDR_LEN);
1051 pci_dma_write(&s->dev, rx_addr + 2 * ETHER_ADDR_LEN,
1052 buf + 2 * ETHER_ADDR_LEN + VLAN_HLEN,
1053 size - 2 * ETHER_ADDR_LEN);
18dabfd1 1054 } else {
3ada003a 1055 pci_dma_write(&s->dev, rx_addr, buf, size);
18dabfd1 1056 }
a41b2ff2 1057
6cadb320
FB		 1058 if (s->CpCmd & CPlusRxChkSum)
1059 {
1060 /* do some packet checksumming */
1061 }
1062
a41b2ff2 1063 /* write checksum */
18dabfd1 1064 val = cpu_to_le32(crc32(0, buf, size_));
3ada003a 1065 pci_dma_write(&s->dev, rx_addr+size, (uint8_t *)&val, 4);
a41b2ff2
PB		 1066
1067/* first segment of received packet flag */
1068#define CP_RX_STATUS_FS (1<<29)
1069/* last segment of received packet flag */
1070#define CP_RX_STATUS_LS (1<<28)
1071/* multicast packet flag */
1072#define CP_RX_STATUS_MAR (1<<26)
1073/* physical-matching packet flag */
1074#define CP_RX_STATUS_PAM (1<<25)
1075/* broadcast packet flag */
1076#define CP_RX_STATUS_BAR (1<<24)
1077/* runt packet flag */
1078#define CP_RX_STATUS_RUNT (1<<19)
1079/* crc error flag */
1080#define CP_RX_STATUS_CRC (1<<18)
1081/* IP checksum error flag */
1082#define CP_RX_STATUS_IPF (1<<15)
1083/* UDP checksum error flag */
1084#define CP_RX_STATUS_UDPF (1<<14)
1085/* TCP checksum error flag */
1086#define CP_RX_STATUS_TCPF (1<<13)
1087
1088 /* transfer ownership to target */
1089 rxdw0 &= ~CP_RX_OWN;
1090
1091 /* set first segment bit */
1092 rxdw0 |= CP_RX_STATUS_FS;
1093
1094 /* set last segment bit */
1095 rxdw0 |= CP_RX_STATUS_LS;
1096
1097 /* set received packet type flags */
1098 if (packet_header & RxBroadcast)
1099 rxdw0 |= CP_RX_STATUS_BAR;
1100 if (packet_header & RxMulticast)
1101 rxdw0 |= CP_RX_STATUS_MAR;
1102 if (packet_header & RxPhysical)
1103 rxdw0 |= CP_RX_STATUS_PAM;
1104
1105 /* set received size */
1106 rxdw0 &= ~CP_RX_BUFFER_SIZE_MASK;
1107 rxdw0 |= (size+4);
1108
a41b2ff2
PB		 1109 /* update ring data */
1110 val = cpu_to_le32(rxdw0);
3ada003a 1111 pci_dma_write(&s->dev, cplus_rx_ring_desc, (uint8_t *)&val, 4);
a41b2ff2 1112 val = cpu_to_le32(rxdw1);
3ada003a 1113 pci_dma_write(&s->dev, cplus_rx_ring_desc+4, (uint8_t *)&val, 4);
a41b2ff2 1114
6cadb320
FB		 1115 /* update tally counter */
1116 ++s->tally_counters.RxOk;
1117
a41b2ff2
PB		 1118 /* seek to next Rx descriptor */
1119 if (rxdw0 & CP_RX_EOR)
1120 {
1121 s->currCPlusRxDesc = 0;
1122 }
1123 else
1124 {
1125 ++s->currCPlusRxDesc;
1126 }
1127
7cdeb319 1128 DPRINTF("done C+ Rx mode ----------------\n");
a41b2ff2
PB		 1129
1130 }
1131 else
1132 {
7cdeb319 1133 DPRINTF("in ring Rx mode ================\n");
6cadb320 1134
a41b2ff2
PB		 1135 /* begin ring receiver mode */
1136 int avail = MOD2(s->RxBufferSize + s->RxBufPtr - s->RxBufAddr, s->RxBufferSize);
1137
1138 /* if receiver buffer is empty then avail == 0 */
1139
1140 if (avail != 0 && size + 8 >= avail)
1141 {
7cdeb319
BP		 1142 DPRINTF("rx overflow: rx buffer length %d head 0x%04x "
1143 "read 0x%04x === available 0x%04x need 0x%04x\n",
1144 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr, avail, size + 8);
6cadb320 1145
a41b2ff2
PB		 1146 s->IntrStatus |= RxOverflow;
1147 ++s->RxMissed;
1148 rtl8139_update_irq(s);
4f1c942b 1149 return size_;
a41b2ff2
PB		 1150 }
1151
1152 packet_header |= RxStatusOK;
1153
1154 packet_header |= (((size+4) << 16) & 0xffff0000);
1155
1156 /* write header */
1157 uint32_t val = cpu_to_le32(packet_header);
1158
1159 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1160
1161 rtl8139_write_buffer(s, buf, size);
1162
1163 /* write checksum */
ccf1d14a 1164 val = cpu_to_le32(crc32(0, buf, size));
a41b2ff2
PB		 1165 rtl8139_write_buffer(s, (uint8_t *)&val, 4);
1166
1167 /* correct buffer write pointer */
1168 s->RxBufAddr = MOD2((s->RxBufAddr + 3) & ~0x3, s->RxBufferSize);
1169
1170 /* now we can signal we have received something */
1171
7cdeb319
BP		 1172 DPRINTF("received: rx buffer length %d head 0x%04x read 0x%04x\n",
1173 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
a41b2ff2
PB		 1174 }
1175
1176 s->IntrStatus |= RxOK;
6cadb320
FB		 1177
1178 if (do_interrupt)
1179 {
1180 rtl8139_update_irq(s);
1181 }
4f1c942b
MM		 1182
1183 return size_;
6cadb320
FB		 1184}
1185
4e68f7a0 1186static ssize_t rtl8139_receive(NetClientState *nc, const uint8_t *buf, size_t size)
6cadb320 1187{
1673ad51 1188 return rtl8139_do_receive(nc, buf, size, 1);
a41b2ff2
PB		 1189}
1190
1191static void rtl8139_reset_rxring(RTL8139State *s, uint32_t bufferSize)
1192{
1193 s->RxBufferSize = bufferSize;
1194 s->RxBufPtr = 0;
1195 s->RxBufAddr = 0;
1196}
1197
7f23f812 1198static void rtl8139_reset(DeviceState *d)
a41b2ff2 1199{
7f23f812 1200 RTL8139State *s = container_of(d, RTL8139State, dev.qdev);
a41b2ff2
PB		 1201 int i;
1202
1203 /* restore MAC address */
254111ec 1204 memcpy(s->phys, s->conf.macaddr.a, 6);
a41b2ff2
PB		 1205
1206 /* reset interrupt mask */
1207 s->IntrStatus = 0;
1208 s->IntrMask = 0;
1209
1210 rtl8139_update_irq(s);
1211
a41b2ff2
PB		 1212 /* mark all status registers as owned by host */
1213 for (i = 0; i < 4; ++i)
1214 {
1215 s->TxStatus[i] = TxHostOwns;
1216 }
1217
1218 s->currTxDesc = 0;
1219 s->currCPlusRxDesc = 0;
1220 s->currCPlusTxDesc = 0;
1221
1222 s->RxRingAddrLO = 0;
1223 s->RxRingAddrHI = 0;
1224
1225 s->RxBuf = 0;
1226
1227 rtl8139_reset_rxring(s, 8192);
1228
1229 /* ACK the reset */
1230 s->TxConfig = 0;
1231
1232#if 0
1233// s->TxConfig |= HW_REVID(1, 0, 0, 0, 0, 0, 0); // RTL-8139 HasHltClk
1234 s->clock_enabled = 0;
1235#else
6cadb320 1236 s->TxConfig |= HW_REVID(1, 1, 1, 0, 1, 1, 0); // RTL-8139C+ HasLWake
a41b2ff2
PB		 1237 s->clock_enabled = 1;
1238#endif
1239
1240 s->bChipCmdState = CmdReset; /* RxBufEmpty bit is calculated on read from ChipCmd */;
1241
1242 /* set initial state data */
1243 s->Config0 = 0x0; /* No boot ROM */
1244 s->Config1 = 0xC; /* IO mapped and MEM mapped registers available */
1245 s->Config3 = 0x1; /* fast back-to-back compatible */
1246 s->Config5 = 0x0;
1247
5fafdf24 1248 s->CSCR = CSCR_F_LINK_100 | CSCR_HEART_BIT | CSCR_LD;
a41b2ff2
PB		 1249
1250 s->CpCmd = 0x0; /* reset C+ mode */
2c3891ab
AL		 1251 s->cplus_enabled = 0;
1252
a41b2ff2
PB		 1253
1254// s->BasicModeCtrl = 0x3100; // 100Mbps, full duplex, autonegotiation
1255// s->BasicModeCtrl = 0x2100; // 100Mbps, full duplex
1256 s->BasicModeCtrl = 0x1000; // autonegotiation
1257
1258 s->BasicModeStatus = 0x7809;
1259 //s->BasicModeStatus |= 0x0040; /* UTP medium */
1260 s->BasicModeStatus |= 0x0020; /* autonegotiation completed */
83f58e57 1261 /* preserve link state */
b356f76d 1262 s->BasicModeStatus |= qemu_get_queue(s->nic)->link_down ? 0 : 0x04;
a41b2ff2
PB		 1263
1264 s->NWayAdvert = 0x05e1; /* all modes, full duplex */
1265 s->NWayLPAR = 0x05e1; /* all modes, full duplex */
1266 s->NWayExpansion = 0x0001; /* autonegotiation supported */
6cadb320
FB		 1267
1268 /* also reset timer and disable timer interrupt */
1269 s->TCTR = 0;
1270 s->TimerInt = 0;
1271 s->TCTR_base = 0;
1272
1273 /* reset tally counters */
1274 RTL8139TallyCounters_clear(&s->tally_counters);
1275}
1276
b1d8e52e 1277static void RTL8139TallyCounters_clear(RTL8139TallyCounters* counters)
6cadb320
FB		 1278{
1279 counters->TxOk = 0;
1280 counters->RxOk = 0;
1281 counters->TxERR = 0;
1282 counters->RxERR = 0;
1283 counters->MissPkt = 0;
1284 counters->FAE = 0;
1285 counters->Tx1Col = 0;
1286 counters->TxMCol = 0;
1287 counters->RxOkPhy = 0;
1288 counters->RxOkBrd = 0;
1289 counters->RxOkMul = 0;
1290 counters->TxAbt = 0;
1291 counters->TxUndrn = 0;
1292}
1293
3ada003a 1294static void RTL8139TallyCounters_dma_write(RTL8139State *s, dma_addr_t tc_addr)
6cadb320 1295{
3ada003a 1296 RTL8139TallyCounters *tally_counters = &s->tally_counters;
6cadb320
FB		 1297 uint16_t val16;
1298 uint32_t val32;
1299 uint64_t val64;
1300
1301 val64 = cpu_to_le64(tally_counters->TxOk);
3ada003a 1302 pci_dma_write(&s->dev, tc_addr + 0, (uint8_t *)&val64, 8);
6cadb320
FB		 1303
1304 val64 = cpu_to_le64(tally_counters->RxOk);
3ada003a 1305 pci_dma_write(&s->dev, tc_addr + 8, (uint8_t *)&val64, 8);
6cadb320
FB		 1306
1307 val64 = cpu_to_le64(tally_counters->TxERR);
3ada003a 1308 pci_dma_write(&s->dev, tc_addr + 16, (uint8_t *)&val64, 8);
6cadb320
FB		 1309
1310 val32 = cpu_to_le32(tally_counters->RxERR);
3ada003a 1311 pci_dma_write(&s->dev, tc_addr + 24, (uint8_t *)&val32, 4);
6cadb320
FB		 1312
1313 val16 = cpu_to_le16(tally_counters->MissPkt);
3ada003a 1314 pci_dma_write(&s->dev, tc_addr + 28, (uint8_t *)&val16, 2);
6cadb320
FB		 1315
1316 val16 = cpu_to_le16(tally_counters->FAE);
3ada003a 1317 pci_dma_write(&s->dev, tc_addr + 30, (uint8_t *)&val16, 2);
6cadb320
FB		 1318
1319 val32 = cpu_to_le32(tally_counters->Tx1Col);
3ada003a 1320 pci_dma_write(&s->dev, tc_addr + 32, (uint8_t *)&val32, 4);
6cadb320
FB		 1321
1322 val32 = cpu_to_le32(tally_counters->TxMCol);
3ada003a 1323 pci_dma_write(&s->dev, tc_addr + 36, (uint8_t *)&val32, 4);
6cadb320
FB		 1324
1325 val64 = cpu_to_le64(tally_counters->RxOkPhy);
3ada003a 1326 pci_dma_write(&s->dev, tc_addr + 40, (uint8_t *)&val64, 8);
6cadb320
FB		 1327
1328 val64 = cpu_to_le64(tally_counters->RxOkBrd);
3ada003a 1329 pci_dma_write(&s->dev, tc_addr + 48, (uint8_t *)&val64, 8);
6cadb320
FB		 1330
1331 val32 = cpu_to_le32(tally_counters->RxOkMul);
3ada003a 1332 pci_dma_write(&s->dev, tc_addr + 56, (uint8_t *)&val32, 4);
6cadb320
FB		 1333
1334 val16 = cpu_to_le16(tally_counters->TxAbt);
3ada003a 1335 pci_dma_write(&s->dev, tc_addr + 60, (uint8_t *)&val16, 2);
6cadb320
FB		 1336
1337 val16 = cpu_to_le16(tally_counters->TxUndrn);
3ada003a 1338 pci_dma_write(&s->dev, tc_addr + 62, (uint8_t *)&val16, 2);
6cadb320
FB		 1339}
1340
1341/* Loads values of tally counters from VM state file */
9d29cdea
JQ		 1342
1343static const VMStateDescription vmstate_tally_counters = {
1344 .name = "tally_counters",
1345 .version_id = 1,
1346 .minimum_version_id = 1,
1347 .minimum_version_id_old = 1,
1348 .fields = (VMStateField []) {
1349 VMSTATE_UINT64(TxOk, RTL8139TallyCounters),
1350 VMSTATE_UINT64(RxOk, RTL8139TallyCounters),
1351 VMSTATE_UINT64(TxERR, RTL8139TallyCounters),
1352 VMSTATE_UINT32(RxERR, RTL8139TallyCounters),
1353 VMSTATE_UINT16(MissPkt, RTL8139TallyCounters),
1354 VMSTATE_UINT16(FAE, RTL8139TallyCounters),
1355 VMSTATE_UINT32(Tx1Col, RTL8139TallyCounters),
1356 VMSTATE_UINT32(TxMCol, RTL8139TallyCounters),
1357 VMSTATE_UINT64(RxOkPhy, RTL8139TallyCounters),
1358 VMSTATE_UINT64(RxOkBrd, RTL8139TallyCounters),
1359 VMSTATE_UINT16(TxAbt, RTL8139TallyCounters),
1360 VMSTATE_UINT16(TxUndrn, RTL8139TallyCounters),
1361 VMSTATE_END_OF_LIST()
1362 }
1363};
a41b2ff2
PB		 1364
1365static void rtl8139_ChipCmd_write(RTL8139State *s, uint32_t val)
1366{
1367 val &= 0xff;
1368
7cdeb319 1369 DPRINTF("ChipCmd write val=0x%08x\n", val);
a41b2ff2
PB		 1370
1371 if (val & CmdReset)
1372 {
7cdeb319 1373 DPRINTF("ChipCmd reset\n");
7f23f812 1374 rtl8139_reset(&s->dev.qdev);
a41b2ff2
PB		 1375 }
1376 if (val & CmdRxEnb)
1377 {
7cdeb319 1378 DPRINTF("ChipCmd enable receiver\n");
718da2b9
FB		 1379
1380 s->currCPlusRxDesc = 0;
a41b2ff2
PB		 1381 }
1382 if (val & CmdTxEnb)
1383 {
7cdeb319 1384 DPRINTF("ChipCmd enable transmitter\n");
718da2b9
FB		 1385
1386 s->currCPlusTxDesc = 0;
a41b2ff2
PB		 1387 }
1388
ebabb67a 1389 /* mask unwritable bits */
a41b2ff2
PB		 1390 val = SET_MASKED(val, 0xe3, s->bChipCmdState);
1391
1392 /* Deassert reset pin before next read */
1393 val &= ~CmdReset;
1394
1395 s->bChipCmdState = val;
1396}
1397
1398static int rtl8139_RxBufferEmpty(RTL8139State *s)
1399{
1400 int unread = MOD2(s->RxBufferSize + s->RxBufAddr - s->RxBufPtr, s->RxBufferSize);
1401
1402 if (unread != 0)
1403 {
7cdeb319 1404 DPRINTF("receiver buffer data available 0x%04x\n", unread);
a41b2ff2
PB		 1405 return 0;
1406 }
1407
7cdeb319 1408 DPRINTF("receiver buffer is empty\n");
a41b2ff2
PB		 1409
1410 return 1;
1411}
1412
1413static uint32_t rtl8139_ChipCmd_read(RTL8139State *s)
1414{
1415 uint32_t ret = s->bChipCmdState;
1416
1417 if (rtl8139_RxBufferEmpty(s))
1418 ret |= RxBufEmpty;
1419
7cdeb319 1420 DPRINTF("ChipCmd read val=0x%04x\n", ret);
a41b2ff2
PB		 1421
1422 return ret;
1423}
1424
1425static void rtl8139_CpCmd_write(RTL8139State *s, uint32_t val)
1426{
1427 val &= 0xffff;
1428
7cdeb319 1429 DPRINTF("C+ command register write(w) val=0x%04x\n", val);
a41b2ff2 1430
2c3891ab
AL		 1431 s->cplus_enabled = 1;
1432
ebabb67a 1433 /* mask unwritable bits */
a41b2ff2
PB		 1434 val = SET_MASKED(val, 0xff84, s->CpCmd);
1435
1436 s->CpCmd = val;
1437}
1438
1439static uint32_t rtl8139_CpCmd_read(RTL8139State *s)
1440{
1441 uint32_t ret = s->CpCmd;
1442
7cdeb319 1443 DPRINTF("C+ command register read(w) val=0x%04x\n", ret);
6cadb320
FB		 1444
1445 return ret;
1446}
1447
1448static void rtl8139_IntrMitigate_write(RTL8139State *s, uint32_t val)
1449{
7cdeb319 1450 DPRINTF("C+ IntrMitigate register write(w) val=0x%04x\n", val);
6cadb320
FB		 1451}
1452
1453static uint32_t rtl8139_IntrMitigate_read(RTL8139State *s)
1454{
1455 uint32_t ret = 0;
1456
7cdeb319 1457 DPRINTF("C+ IntrMitigate register read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 1458
1459 return ret;
1460}
1461
ebabb67a 1462static int rtl8139_config_writable(RTL8139State *s)
a41b2ff2 1463{
eb46c5ed 1464 if ((s->Cfg9346 & Chip9346_op_mask) == Cfg9346_ConfigWrite)
a41b2ff2
PB		 1465 {
1466 return 1;
1467 }
1468
7cdeb319 1469 DPRINTF("Configuration registers are write-protected\n");
a41b2ff2
PB		 1470
1471 return 0;
1472}
1473
1474static void rtl8139_BasicModeCtrl_write(RTL8139State *s, uint32_t val)
1475{
1476 val &= 0xffff;
1477
7cdeb319 1478 DPRINTF("BasicModeCtrl register write(w) val=0x%04x\n", val);
a41b2ff2 1479
ebabb67a 1480 /* mask unwritable bits */
e3d7e843 1481 uint32_t mask = 0x4cff;
a41b2ff2 1482
ebabb67a 1483 if (1 || !rtl8139_config_writable(s))
a41b2ff2
PB		 1484 {
1485 /* Speed setting and autonegotiation enable bits are read-only */
1486 mask |= 0x3000;
1487 /* Duplex mode setting is read-only */
1488 mask |= 0x0100;
1489 }
1490
1491 val = SET_MASKED(val, mask, s->BasicModeCtrl);
1492
1493 s->BasicModeCtrl = val;
1494}
1495
1496static uint32_t rtl8139_BasicModeCtrl_read(RTL8139State *s)
1497{
1498 uint32_t ret = s->BasicModeCtrl;
1499
7cdeb319 1500 DPRINTF("BasicModeCtrl register read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 1501
1502 return ret;
1503}
1504
1505static void rtl8139_BasicModeStatus_write(RTL8139State *s, uint32_t val)
1506{
1507 val &= 0xffff;
1508
7cdeb319 1509 DPRINTF("BasicModeStatus register write(w) val=0x%04x\n", val);
a41b2ff2 1510
ebabb67a 1511 /* mask unwritable bits */
a41b2ff2
PB		 1512 val = SET_MASKED(val, 0xff3f, s->BasicModeStatus);
1513
1514 s->BasicModeStatus = val;
1515}
1516
1517static uint32_t rtl8139_BasicModeStatus_read(RTL8139State *s)
1518{
1519 uint32_t ret = s->BasicModeStatus;
1520
7cdeb319 1521 DPRINTF("BasicModeStatus register read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 1522
1523 return ret;
1524}
1525
1526static void rtl8139_Cfg9346_write(RTL8139State *s, uint32_t val)
1527{
1528 val &= 0xff;
1529
7cdeb319 1530 DPRINTF("Cfg9346 write val=0x%02x\n", val);
a41b2ff2 1531
ebabb67a 1532 /* mask unwritable bits */
a41b2ff2
PB		 1533 val = SET_MASKED(val, 0x31, s->Cfg9346);
1534
1535 uint32_t opmode = val & 0xc0;
1536 uint32_t eeprom_val = val & 0xf;
1537
1538 if (opmode == 0x80) {
1539 /* eeprom access */
1540 int eecs = (eeprom_val & 0x08)?1:0;
1541 int eesk = (eeprom_val & 0x04)?1:0;
1542 int eedi = (eeprom_val & 0x02)?1:0;
1543 prom9346_set_wire(s, eecs, eesk, eedi);
1544 } else if (opmode == 0x40) {
1545 /* Reset. */
1546 val = 0;
7f23f812 1547 rtl8139_reset(&s->dev.qdev);
a41b2ff2
PB		 1548 }
1549
1550 s->Cfg9346 = val;
1551}
1552
1553static uint32_t rtl8139_Cfg9346_read(RTL8139State *s)
1554{
1555 uint32_t ret = s->Cfg9346;
1556
1557 uint32_t opmode = ret & 0xc0;
1558
1559 if (opmode == 0x80)
1560 {
1561 /* eeprom access */
1562 int eedo = prom9346_get_wire(s);
1563 if (eedo)
1564 {
1565 ret |= 0x01;
1566 }
1567 else
1568 {
1569 ret &= ~0x01;
1570 }
1571 }
1572
7cdeb319 1573 DPRINTF("Cfg9346 read val=0x%02x\n", ret);
a41b2ff2
PB		 1574
1575 return ret;
1576}
1577
1578static void rtl8139_Config0_write(RTL8139State *s, uint32_t val)
1579{
1580 val &= 0xff;
1581
7cdeb319 1582 DPRINTF("Config0 write val=0x%02x\n", val);
a41b2ff2 1583
ebabb67a 1584 if (!rtl8139_config_writable(s)) {
a41b2ff2 1585 return;
ebabb67a 1586 }
a41b2ff2 1587
ebabb67a 1588 /* mask unwritable bits */
a41b2ff2
PB		 1589 val = SET_MASKED(val, 0xf8, s->Config0);
1590
1591 s->Config0 = val;
1592}
1593
1594static uint32_t rtl8139_Config0_read(RTL8139State *s)
1595{
1596 uint32_t ret = s->Config0;
1597
7cdeb319 1598 DPRINTF("Config0 read val=0x%02x\n", ret);
a41b2ff2
PB		 1599
1600 return ret;
1601}
1602
1603static void rtl8139_Config1_write(RTL8139State *s, uint32_t val)
1604{
1605 val &= 0xff;
1606
7cdeb319 1607 DPRINTF("Config1 write val=0x%02x\n", val);
a41b2ff2 1608
ebabb67a 1609 if (!rtl8139_config_writable(s)) {
a41b2ff2 1610 return;
ebabb67a 1611 }
a41b2ff2 1612
ebabb67a 1613 /* mask unwritable bits */
a41b2ff2
PB		 1614 val = SET_MASKED(val, 0xC, s->Config1);
1615
1616 s->Config1 = val;
1617}
1618
1619static uint32_t rtl8139_Config1_read(RTL8139State *s)
1620{
1621 uint32_t ret = s->Config1;
1622
7cdeb319 1623 DPRINTF("Config1 read val=0x%02x\n", ret);
a41b2ff2
PB		 1624
1625 return ret;
1626}
1627
1628static void rtl8139_Config3_write(RTL8139State *s, uint32_t val)
1629{
1630 val &= 0xff;
1631
7cdeb319 1632 DPRINTF("Config3 write val=0x%02x\n", val);
a41b2ff2 1633
ebabb67a 1634 if (!rtl8139_config_writable(s)) {
a41b2ff2 1635 return;
ebabb67a 1636 }
a41b2ff2 1637
ebabb67a 1638 /* mask unwritable bits */
a41b2ff2
PB		 1639 val = SET_MASKED(val, 0x8F, s->Config3);
1640
1641 s->Config3 = val;
1642}
1643
1644static uint32_t rtl8139_Config3_read(RTL8139State *s)
1645{
1646 uint32_t ret = s->Config3;
1647
7cdeb319 1648 DPRINTF("Config3 read val=0x%02x\n", ret);
a41b2ff2
PB		 1649
1650 return ret;
1651}
1652
1653static void rtl8139_Config4_write(RTL8139State *s, uint32_t val)
1654{
1655 val &= 0xff;
1656
7cdeb319 1657 DPRINTF("Config4 write val=0x%02x\n", val);
a41b2ff2 1658
ebabb67a 1659 if (!rtl8139_config_writable(s)) {
a41b2ff2 1660 return;
ebabb67a 1661 }
a41b2ff2 1662
ebabb67a 1663 /* mask unwritable bits */
a41b2ff2
PB		 1664 val = SET_MASKED(val, 0x0a, s->Config4);
1665
1666 s->Config4 = val;
1667}
1668
1669static uint32_t rtl8139_Config4_read(RTL8139State *s)
1670{
1671 uint32_t ret = s->Config4;
1672
7cdeb319 1673 DPRINTF("Config4 read val=0x%02x\n", ret);
a41b2ff2
PB		 1674
1675 return ret;
1676}
1677
1678static void rtl8139_Config5_write(RTL8139State *s, uint32_t val)
1679{
1680 val &= 0xff;
1681
7cdeb319 1682 DPRINTF("Config5 write val=0x%02x\n", val);
a41b2ff2 1683
ebabb67a 1684 /* mask unwritable bits */
a41b2ff2
PB		 1685 val = SET_MASKED(val, 0x80, s->Config5);
1686
1687 s->Config5 = val;
1688}
1689
1690static uint32_t rtl8139_Config5_read(RTL8139State *s)
1691{
1692 uint32_t ret = s->Config5;
1693
7cdeb319 1694 DPRINTF("Config5 read val=0x%02x\n", ret);
a41b2ff2
PB		 1695
1696 return ret;
1697}
1698
1699static void rtl8139_TxConfig_write(RTL8139State *s, uint32_t val)
1700{
1701 if (!rtl8139_transmitter_enabled(s))
1702 {
7cdeb319 1703 DPRINTF("transmitter disabled; no TxConfig write val=0x%08x\n", val);
a41b2ff2
PB		 1704 return;
1705 }
1706
7cdeb319 1707 DPRINTF("TxConfig write val=0x%08x\n", val);
a41b2ff2
PB		 1708
1709 val = SET_MASKED(val, TxVersionMask | 0x8070f80f, s->TxConfig);
1710
1711 s->TxConfig = val;
1712}
1713
1714static void rtl8139_TxConfig_writeb(RTL8139State *s, uint32_t val)
1715{
7cdeb319 1716 DPRINTF("RTL8139C TxConfig via write(b) val=0x%02x\n", val);
6cadb320
FB		 1717
1718 uint32_t tc = s->TxConfig;
1719 tc &= 0xFFFFFF00;
1720 tc |= (val & 0x000000FF);
1721 rtl8139_TxConfig_write(s, tc);
a41b2ff2
PB		 1722}
1723
1724static uint32_t rtl8139_TxConfig_read(RTL8139State *s)
1725{
1726 uint32_t ret = s->TxConfig;
1727
7cdeb319 1728 DPRINTF("TxConfig read val=0x%04x\n", ret);
a41b2ff2
PB		 1729
1730 return ret;
1731}
1732
1733static void rtl8139_RxConfig_write(RTL8139State *s, uint32_t val)
1734{
7cdeb319 1735 DPRINTF("RxConfig write val=0x%08x\n", val);
a41b2ff2 1736
ebabb67a 1737 /* mask unwritable bits */
a41b2ff2
PB		 1738 val = SET_MASKED(val, 0xf0fc0040, s->RxConfig);
1739
1740 s->RxConfig = val;
1741
1742 /* reset buffer size and read/write pointers */
1743 rtl8139_reset_rxring(s, 8192 << ((s->RxConfig >> 11) & 0x3));
1744
7cdeb319 1745 DPRINTF("RxConfig write reset buffer size to %d\n", s->RxBufferSize);
a41b2ff2
PB		 1746}
1747
1748static uint32_t rtl8139_RxConfig_read(RTL8139State *s)
1749{
1750 uint32_t ret = s->RxConfig;
1751
7cdeb319 1752 DPRINTF("RxConfig read val=0x%08x\n", ret);
a41b2ff2
PB		 1753
1754 return ret;
1755}
1756
bf6b87a8
BP		 1757static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
1758 int do_interrupt, const uint8_t *dot1q_buf)
718da2b9 1759{
bf6b87a8
BP		 1760 struct iovec *iov = NULL;
1761
718da2b9
FB		 1762 if (!size)
1763 {
7cdeb319 1764 DPRINTF("+++ empty ethernet frame\n");
718da2b9
FB		 1765 return;
1766 }
1767
bf6b87a8
BP		 1768 if (dot1q_buf && size >= ETHER_ADDR_LEN * 2) {
1769 iov = (struct iovec[3]) {
1770 { .iov_base = buf, .iov_len = ETHER_ADDR_LEN * 2 },
1771 { .iov_base = (void *) dot1q_buf, .iov_len = VLAN_HLEN },
1772 { .iov_base = buf + ETHER_ADDR_LEN * 2,
1773 .iov_len = size - ETHER_ADDR_LEN * 2 },
1774 };
1775 }
1776
718da2b9
FB		 1777 if (TxLoopBack == (s->TxConfig & TxLoopBack))
1778 {
bf6b87a8
BP		 1779 size_t buf2_size;
1780 uint8_t *buf2;
1781
1782 if (iov) {
1783 buf2_size = iov_size(iov, 3);
7267c094 1784 buf2 = g_malloc(buf2_size);
dcf6f5e1 1785 iov_to_buf(iov, 3, 0, buf2, buf2_size);
bf6b87a8
BP		 1786 buf = buf2;
1787 }
1788
7cdeb319 1789 DPRINTF("+++ transmit loopback mode\n");
b356f76d 1790 rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt);
bf6b87a8
BP		 1791
1792 if (iov) {
7267c094 1793 g_free(buf2);
bf6b87a8 1794 }
718da2b9
FB		 1795 }
1796 else
1797 {
bf6b87a8 1798 if (iov) {
b356f76d 1799 qemu_sendv_packet(qemu_get_queue(s->nic), iov, 3);
bf6b87a8 1800 } else {
b356f76d 1801 qemu_send_packet(qemu_get_queue(s->nic), buf, size);
bf6b87a8 1802 }
718da2b9
FB		 1803 }
1804}
1805
a41b2ff2
PB		 1806static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
1807{
1808 if (!rtl8139_transmitter_enabled(s))
1809 {
7cdeb319
BP		 1810 DPRINTF("+++ cannot transmit from descriptor %d: transmitter "
1811 "disabled\n", descriptor);
a41b2ff2
PB		 1812 return 0;
1813 }
1814
1815 if (s->TxStatus[descriptor] & TxHostOwns)
1816 {
7cdeb319
BP		 1817 DPRINTF("+++ cannot transmit from descriptor %d: owned by host "
1818 "(%08x)\n", descriptor, s->TxStatus[descriptor]);
a41b2ff2
PB		 1819 return 0;
1820 }
1821
7cdeb319 1822 DPRINTF("+++ transmitting from descriptor %d\n", descriptor);
a41b2ff2
PB		 1823
1824 int txsize = s->TxStatus[descriptor] & 0x1fff;
1825 uint8_t txbuffer[0x2000];
1826
7cdeb319
BP		 1827 DPRINTF("+++ transmit reading %d bytes from host memory at 0x%08x\n",
1828 txsize, s->TxAddr[descriptor]);
a41b2ff2 1829
3ada003a 1830 pci_dma_read(&s->dev, s->TxAddr[descriptor], txbuffer, txsize);
a41b2ff2
PB		 1831
1832 /* Mark descriptor as transferred */
1833 s->TxStatus[descriptor] |= TxHostOwns;
1834 s->TxStatus[descriptor] |= TxStatOK;
1835
bf6b87a8 1836 rtl8139_transfer_frame(s, txbuffer, txsize, 0, NULL);
6cadb320 1837
7cdeb319
BP		 1838 DPRINTF("+++ transmitted %d bytes from descriptor %d\n", txsize,
1839 descriptor);
a41b2ff2
PB		 1840
1841 /* update interrupt */
1842 s->IntrStatus |= TxOK;
1843 rtl8139_update_irq(s);
1844
1845 return 1;
1846}
1847
718da2b9
FB		 1848/* structures and macros for task offloading */
1849typedef struct ip_header
1850{
1851 uint8_t ip_ver_len; /* version and header length */
1852 uint8_t ip_tos; /* type of service */
1853 uint16_t ip_len; /* total length */
1854 uint16_t ip_id; /* identification */
1855 uint16_t ip_off; /* fragment offset field */
1856 uint8_t ip_ttl; /* time to live */
1857 uint8_t ip_p; /* protocol */
1858 uint16_t ip_sum; /* checksum */
1859 uint32_t ip_src,ip_dst; /* source and dest address */
1860} ip_header;
1861
1862#define IP_HEADER_VERSION_4 4
1863#define IP_HEADER_VERSION(ip) ((ip->ip_ver_len >> 4)&0xf)
1864#define IP_HEADER_LENGTH(ip) (((ip->ip_ver_len)&0xf) << 2)
1865
1866typedef struct tcp_header
1867{
1868 uint16_t th_sport; /* source port */
1869 uint16_t th_dport; /* destination port */
1870 uint32_t th_seq; /* sequence number */
1871 uint32_t th_ack; /* acknowledgement number */
1872 uint16_t th_offset_flags; /* data offset, reserved 6 bits, TCP protocol flags */
1873 uint16_t th_win; /* window */
1874 uint16_t th_sum; /* checksum */
1875 uint16_t th_urp; /* urgent pointer */
1876} tcp_header;
1877
1878typedef struct udp_header
1879{
1880 uint16_t uh_sport; /* source port */
1881 uint16_t uh_dport; /* destination port */
1882 uint16_t uh_ulen; /* udp length */
1883 uint16_t uh_sum; /* udp checksum */
1884} udp_header;
1885
1886typedef struct ip_pseudo_header
1887{
1888 uint32_t ip_src;
1889 uint32_t ip_dst;
1890 uint8_t zeros;
1891 uint8_t ip_proto;
1892 uint16_t ip_payload;
1893} ip_pseudo_header;
1894
1895#define IP_PROTO_TCP 6
1896#define IP_PROTO_UDP 17
1897
1898#define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
1899#define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
1900#define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
1901
1902#define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
1903
1904#define TCP_FLAG_FIN 0x01
1905#define TCP_FLAG_PUSH 0x08
1906
1907/* produces ones' complement sum of data */
1908static uint16_t ones_complement_sum(uint8_t *data, size_t len)
1909{
1910 uint32_t result = 0;
1911
1912 for (; len > 1; data+=2, len-=2)
1913 {
1914 result += *(uint16_t*)data;
1915 }
1916
1917 /* add the remainder byte */
1918 if (len)
1919 {
1920 uint8_t odd[2] = {*data, 0};
1921 result += *(uint16_t*)odd;
1922 }
1923
1924 while (result>>16)
1925 result = (result & 0xffff) + (result >> 16);
1926
1927 return result;
1928}
1929
1930static uint16_t ip_checksum(void *data, size_t len)
1931{
1932 return ~ones_complement_sum((uint8_t*)data, len);
1933}
1934
a41b2ff2
PB		 1935static int rtl8139_cplus_transmit_one(RTL8139State *s)
1936{
1937 if (!rtl8139_transmitter_enabled(s))
1938 {
7cdeb319 1939 DPRINTF("+++ C+ mode: transmitter disabled\n");
a41b2ff2
PB		 1940 return 0;
1941 }
1942
1943 if (!rtl8139_cp_transmitter_enabled(s))
1944 {
7cdeb319 1945 DPRINTF("+++ C+ mode: C+ transmitter disabled\n");
a41b2ff2
PB		 1946 return 0 ;
1947 }
1948
1949 int descriptor = s->currCPlusTxDesc;
1950
3ada003a 1951 dma_addr_t cplus_tx_ring_desc = rtl8139_addr64(s->TxAddr[0], s->TxAddr[1]);
a41b2ff2
PB		 1952
1953 /* Normal priority ring */
1954 cplus_tx_ring_desc += 16 * descriptor;
1955
7cdeb319 1956 DPRINTF("+++ C+ mode reading TX descriptor %d from host memory at "
4abf12f4 1957 "%08x %08x = 0x"DMA_ADDR_FMT"\n", descriptor, s->TxAddr[1],
7cdeb319 1958 s->TxAddr[0], cplus_tx_ring_desc);
a41b2ff2
PB		 1959
1960 uint32_t val, txdw0,txdw1,txbufLO,txbufHI;
1961
3ada003a 1962 pci_dma_read(&s->dev, cplus_tx_ring_desc, (uint8_t *)&val, 4);
a41b2ff2 1963 txdw0 = le32_to_cpu(val);
3ada003a 1964 pci_dma_read(&s->dev, cplus_tx_ring_desc+4, (uint8_t *)&val, 4);
a41b2ff2 1965 txdw1 = le32_to_cpu(val);
3ada003a 1966 pci_dma_read(&s->dev, cplus_tx_ring_desc+8, (uint8_t *)&val, 4);
a41b2ff2 1967 txbufLO = le32_to_cpu(val);
3ada003a 1968 pci_dma_read(&s->dev, cplus_tx_ring_desc+12, (uint8_t *)&val, 4);
a41b2ff2
PB		 1969 txbufHI = le32_to_cpu(val);
1970
7cdeb319
BP		 1971 DPRINTF("+++ C+ mode TX descriptor %d %08x %08x %08x %08x\n", descriptor,
1972 txdw0, txdw1, txbufLO, txbufHI);
a41b2ff2
PB		 1973
1974/* w0 ownership flag */
1975#define CP_TX_OWN (1<<31)
1976/* w0 end of ring flag */
1977#define CP_TX_EOR (1<<30)
1978/* first segment of received packet flag */
1979#define CP_TX_FS (1<<29)
1980/* last segment of received packet flag */
1981#define CP_TX_LS (1<<28)
1982/* large send packet flag */
1983#define CP_TX_LGSEN (1<<27)
718da2b9
FB		 1984/* large send MSS mask, bits 16...25 */
1985#define CP_TC_LGSEN_MSS_MASK ((1 << 12) - 1)
1986
a41b2ff2
PB		 1987/* IP checksum offload flag */
1988#define CP_TX_IPCS (1<<18)
1989/* UDP checksum offload flag */
1990#define CP_TX_UDPCS (1<<17)
1991/* TCP checksum offload flag */
1992#define CP_TX_TCPCS (1<<16)
1993
1994/* w0 bits 0...15 : buffer size */
1995#define CP_TX_BUFFER_SIZE (1<<16)
1996#define CP_TX_BUFFER_SIZE_MASK (CP_TX_BUFFER_SIZE - 1)
bf6b87a8
BP		 1997/* w1 add tag flag */
1998#define CP_TX_TAGC (1<<17)
1999/* w1 bits 0...15 : VLAN tag (big endian) */
a41b2ff2
PB		 2000#define CP_TX_VLAN_TAG_MASK ((1<<16) - 1)
2001/* w2 low 32bit of Rx buffer ptr */
2002/* w3 high 32bit of Rx buffer ptr */
2003
2004/* set after transmission */
2005/* FIFO underrun flag */
2006#define CP_TX_STATUS_UNF (1<<25)
2007/* transmit error summary flag, valid if set any of three below */
2008#define CP_TX_STATUS_TES (1<<23)
2009/* out-of-window collision flag */
2010#define CP_TX_STATUS_OWC (1<<22)
2011/* link failure flag */
2012#define CP_TX_STATUS_LNKF (1<<21)
2013/* excessive collisions flag */
2014#define CP_TX_STATUS_EXC (1<<20)
2015
2016 if (!(txdw0 & CP_TX_OWN))
2017 {
7cdeb319 2018 DPRINTF("C+ Tx mode : descriptor %d is owned by host\n", descriptor);
a41b2ff2
PB		 2019 return 0 ;
2020 }
2021
7cdeb319 2022 DPRINTF("+++ C+ Tx mode : transmitting from descriptor %d\n", descriptor);
6cadb320
FB		 2023
2024 if (txdw0 & CP_TX_FS)
2025 {
7cdeb319
BP		 2026 DPRINTF("+++ C+ Tx mode : descriptor %d is first segment "
2027 "descriptor\n", descriptor);
6cadb320
FB		 2028
2029 /* reset internal buffer offset */
2030 s->cplus_txbuffer_offset = 0;
2031 }
a41b2ff2
PB		 2032
2033 int txsize = txdw0 & CP_TX_BUFFER_SIZE_MASK;
3ada003a 2034 dma_addr_t tx_addr = rtl8139_addr64(txbufLO, txbufHI);
a41b2ff2 2035
6cadb320
FB		 2036 /* make sure we have enough space to assemble the packet */
2037 if (!s->cplus_txbuffer)
2038 {
2039 s->cplus_txbuffer_len = CP_TX_BUFFER_SIZE;
7267c094 2040 s->cplus_txbuffer = g_malloc(s->cplus_txbuffer_len);
6cadb320 2041 s->cplus_txbuffer_offset = 0;
718da2b9 2042
7cdeb319
BP		 2043 DPRINTF("+++ C+ mode transmission buffer allocated space %d\n",
2044 s->cplus_txbuffer_len);
6cadb320
FB		 2045 }
2046
cde31a0e 2047 if (s->cplus_txbuffer_offset + txsize >= s->cplus_txbuffer_len)
6cadb320 2048 {
cde31a0e
JW		 2049 /* The spec didn't tell the maximum size, stick to CP_TX_BUFFER_SIZE */
2050 txsize = s->cplus_txbuffer_len - s->cplus_txbuffer_offset;
2051 DPRINTF("+++ C+ mode transmission buffer overrun, truncated descriptor"
2052 "length to %d\n", txsize);
6cadb320
FB		 2053 }
2054
2055 if (!s->cplus_txbuffer)
2056 {
2057 /* out of memory */
a41b2ff2 2058
7cdeb319
BP		 2059 DPRINTF("+++ C+ mode transmiter failed to reallocate %d bytes\n",
2060 s->cplus_txbuffer_len);
6cadb320
FB		 2061
2062 /* update tally counter */
2063 ++s->tally_counters.TxERR;
2064 ++s->tally_counters.TxAbt;
2065
2066 return 0;
2067 }
2068
2069 /* append more data to the packet */
2070
7cdeb319 2071 DPRINTF("+++ C+ mode transmit reading %d bytes from host memory at "
3ada003a
EGM		 2072 DMA_ADDR_FMT" to offset %d\n", txsize, tx_addr,
2073 s->cplus_txbuffer_offset);
6cadb320 2074
3ada003a
EGM		 2075 pci_dma_read(&s->dev, tx_addr,
2076 s->cplus_txbuffer + s->cplus_txbuffer_offset, txsize);
6cadb320
FB		 2077 s->cplus_txbuffer_offset += txsize;
2078
2079 /* seek to next Rx descriptor */
2080 if (txdw0 & CP_TX_EOR)
2081 {
2082 s->currCPlusTxDesc = 0;
2083 }
2084 else
2085 {
2086 ++s->currCPlusTxDesc;
2087 if (s->currCPlusTxDesc >= 64)
2088 s->currCPlusTxDesc = 0;
2089 }
a41b2ff2
PB		 2090
2091 /* transfer ownership to target */
2092 txdw0 &= ~CP_RX_OWN;
2093
2094 /* reset error indicator bits */
2095 txdw0 &= ~CP_TX_STATUS_UNF;
2096 txdw0 &= ~CP_TX_STATUS_TES;
2097 txdw0 &= ~CP_TX_STATUS_OWC;
2098 txdw0 &= ~CP_TX_STATUS_LNKF;
2099 txdw0 &= ~CP_TX_STATUS_EXC;
2100
2101 /* update ring data */
2102 val = cpu_to_le32(txdw0);
3ada003a 2103 pci_dma_write(&s->dev, cplus_tx_ring_desc, (uint8_t *)&val, 4);
a41b2ff2 2104
6cadb320
FB		 2105 /* Now decide if descriptor being processed is holding the last segment of packet */
2106 if (txdw0 & CP_TX_LS)
a41b2ff2 2107 {
bf6b87a8
BP		 2108 uint8_t dot1q_buffer_space[VLAN_HLEN];
2109 uint16_t *dot1q_buffer;
2110
7cdeb319
BP		 2111 DPRINTF("+++ C+ Tx mode : descriptor %d is last segment descriptor\n",
2112 descriptor);
6cadb320
FB		 2113
2114 /* can transfer fully assembled packet */
2115
2116 uint8_t *saved_buffer = s->cplus_txbuffer;
2117 int saved_size = s->cplus_txbuffer_offset;
2118 int saved_buffer_len = s->cplus_txbuffer_len;
2119
bf6b87a8
BP		 2120 /* create vlan tag */
2121 if (txdw1 & CP_TX_TAGC) {
2122 /* the vlan tag is in BE byte order in the descriptor
2123 * BE + le_to_cpu() + ~swap()~ = cpu */
7cdeb319
BP		 2124 DPRINTF("+++ C+ Tx mode : inserting vlan tag with ""tci: %u\n",
2125 bswap16(txdw1 & CP_TX_VLAN_TAG_MASK));
bf6b87a8
BP		 2126
2127 dot1q_buffer = (uint16_t *) dot1q_buffer_space;
2128 dot1q_buffer[0] = cpu_to_be16(ETH_P_8021Q);
2129 /* BE + le_to_cpu() + ~cpu_to_le()~ = BE */
2130 dot1q_buffer[1] = cpu_to_le16(txdw1 & CP_TX_VLAN_TAG_MASK);
2131 } else {
2132 dot1q_buffer = NULL;
2133 }
2134
6cadb320
FB		 2135 /* reset the card space to protect from recursive call */
2136 s->cplus_txbuffer = NULL;
2137 s->cplus_txbuffer_offset = 0;
2138 s->cplus_txbuffer_len = 0;
2139
718da2b9 2140 if (txdw0 & (CP_TX_IPCS | CP_TX_UDPCS | CP_TX_TCPCS | CP_TX_LGSEN))
6cadb320 2141 {
7cdeb319 2142 DPRINTF("+++ C+ mode offloaded task checksum\n");
6cadb320 2143
6cadb320 2144 /* ip packet header */
660f11be 2145 ip_header *ip = NULL;
6cadb320 2146 int hlen = 0;
718da2b9
FB		 2147 uint8_t ip_protocol = 0;
2148 uint16_t ip_data_len = 0;
6cadb320 2149
660f11be 2150 uint8_t *eth_payload_data = NULL;
718da2b9 2151 size_t eth_payload_len = 0;
6cadb320 2152
718da2b9 2153 int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
6cadb320
FB		 2154 if (proto == ETH_P_IP)
2155 {
7cdeb319 2156 DPRINTF("+++ C+ mode has IP packet\n");
6cadb320
FB		 2157
2158 /* not aligned */
718da2b9
FB		 2159 eth_payload_data = saved_buffer + ETH_HLEN;
2160 eth_payload_len = saved_size - ETH_HLEN;
6cadb320 2161
718da2b9 2162 ip = (ip_header*)eth_payload_data;
6cadb320 2163
718da2b9 2164 if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
7cdeb319
BP		 2165 DPRINTF("+++ C+ mode packet has bad IP version %d "
2166 "expected %d\n", IP_HEADER_VERSION(ip),
2167 IP_HEADER_VERSION_4);
6cadb320
FB		 2168 ip = NULL;
2169 } else {
718da2b9
FB		 2170 hlen = IP_HEADER_LENGTH(ip);
2171 ip_protocol = ip->ip_p;
2172 ip_data_len = be16_to_cpu(ip->ip_len) - hlen;
6cadb320
FB		 2173 }
2174 }
2175
2176 if (ip)
2177 {
2178 if (txdw0 & CP_TX_IPCS)
2179 {
7cdeb319 2180 DPRINTF("+++ C+ mode need IP checksum\n");
6cadb320 2181
718da2b9 2182 if (hlen<sizeof(ip_header) || hlen>eth_payload_len) {/* min header length */
6cadb320
FB		 2183 /* bad packet header len */
2184 /* or packet too short */
2185 }
2186 else
2187 {
2188 ip->ip_sum = 0;
718da2b9 2189 ip->ip_sum = ip_checksum(ip, hlen);
7cdeb319
BP		 2190 DPRINTF("+++ C+ mode IP header len=%d checksum=%04x\n",
2191 hlen, ip->ip_sum);
6cadb320
FB		 2192 }
2193 }
2194
718da2b9 2195 if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
6cadb320 2196 {
718da2b9 2197 int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
ec48c774 2198
7cdeb319
BP		 2199 DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d "
2200 "frame data %d specified MSS=%d\n", ETH_MTU,
2201 ip_data_len, saved_size - ETH_HLEN, large_send_mss);
6cadb320 2202
718da2b9
FB		 2203 int tcp_send_offset = 0;
2204 int send_count = 0;
6cadb320
FB		 2205
2206 /* maximum IP header length is 60 bytes */
2207 uint8_t saved_ip_header[60];
6cadb320 2208
718da2b9
FB		 2209 /* save IP header template; data area is used in tcp checksum calculation */
2210 memcpy(saved_ip_header, eth_payload_data, hlen);
2211
2212 /* a placeholder for checksum calculation routine in tcp case */
2213 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2214 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
2215
2216 /* pointer to TCP header */
2217 tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
2218
2219 int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
2220
2221 /* ETH_MTU = ip header len + tcp header len + payload */
2222 int tcp_data_len = ip_data_len - tcp_hlen;
2223 int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen;
2224
7cdeb319
BP		 2225 DPRINTF("+++ C+ mode TSO IP data len %d TCP hlen %d TCP "
2226 "data len %d TCP chunk size %d\n", ip_data_len,
2227 tcp_hlen, tcp_data_len, tcp_chunk_size);
718da2b9
FB		 2228
2229 /* note the cycle below overwrites IP header data,
2230 but restores it from saved_ip_header before sending packet */
2231
2232 int is_last_frame = 0;
2233
2234 for (tcp_send_offset = 0; tcp_send_offset < tcp_data_len; tcp_send_offset += tcp_chunk_size)
2235 {
2236 uint16_t chunk_size = tcp_chunk_size;
2237
2238 /* check if this is the last frame */
2239 if (tcp_send_offset + tcp_chunk_size >= tcp_data_len)
2240 {
2241 is_last_frame = 1;
2242 chunk_size = tcp_data_len - tcp_send_offset;
2243 }
2244
7cdeb319
BP		 2245 DPRINTF("+++ C+ mode TSO TCP seqno %08x\n",
2246 be32_to_cpu(p_tcp_hdr->th_seq));
718da2b9
FB		 2247
2248 /* add 4 TCP pseudoheader fields */
2249 /* copy IP source and destination fields */
2250 memcpy(data_to_checksum, saved_ip_header + 12, 8);
2251
7cdeb319
BP		 2252 DPRINTF("+++ C+ mode TSO calculating TCP checksum for "
2253 "packet with %d bytes data\n", tcp_hlen +
2254 chunk_size);
718da2b9
FB		 2255
2256 if (tcp_send_offset)
2257 {
2258 memcpy((uint8_t*)p_tcp_hdr + tcp_hlen, (uint8_t*)p_tcp_hdr + tcp_hlen + tcp_send_offset, chunk_size);
2259 }
2260
2261 /* keep PUSH and FIN flags only for the last frame */
2262 if (!is_last_frame)
2263 {
2264 TCP_HEADER_CLEAR_FLAGS(p_tcp_hdr, TCP_FLAG_PUSH|TCP_FLAG_FIN);
2265 }
6cadb320 2266
718da2b9
FB		 2267 /* recalculate TCP checksum */
2268 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2269 p_tcpip_hdr->zeros = 0;
2270 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2271 p_tcpip_hdr->ip_payload = cpu_to_be16(tcp_hlen + chunk_size);
2272
2273 p_tcp_hdr->th_sum = 0;
2274
2275 int tcp_checksum = ip_checksum(data_to_checksum, tcp_hlen + chunk_size + 12);
7cdeb319
BP		 2276 DPRINTF("+++ C+ mode TSO TCP checksum %04x\n",
2277 tcp_checksum);
718da2b9
FB		 2278
2279 p_tcp_hdr->th_sum = tcp_checksum;
2280
2281 /* restore IP header */
2282 memcpy(eth_payload_data, saved_ip_header, hlen);
2283
2284 /* set IP data length and recalculate IP checksum */
2285 ip->ip_len = cpu_to_be16(hlen + tcp_hlen + chunk_size);
2286
2287 /* increment IP id for subsequent frames */
2288 ip->ip_id = cpu_to_be16(tcp_send_offset/tcp_chunk_size + be16_to_cpu(ip->ip_id));
2289
2290 ip->ip_sum = 0;
2291 ip->ip_sum = ip_checksum(eth_payload_data, hlen);
7cdeb319
BP		 2292 DPRINTF("+++ C+ mode TSO IP header len=%d "
2293 "checksum=%04x\n", hlen, ip->ip_sum);
718da2b9
FB		 2294
2295 int tso_send_size = ETH_HLEN + hlen + tcp_hlen + chunk_size;
7cdeb319
BP		 2296 DPRINTF("+++ C+ mode TSO transferring packet size "
2297 "%d\n", tso_send_size);
bf6b87a8
BP		 2298 rtl8139_transfer_frame(s, saved_buffer, tso_send_size,
2299 0, (uint8_t *) dot1q_buffer);
718da2b9
FB		 2300
2301 /* add transferred count to TCP sequence number */
2302 p_tcp_hdr->th_seq = cpu_to_be32(chunk_size + be32_to_cpu(p_tcp_hdr->th_seq));
2303 ++send_count;
2304 }
2305
2306 /* Stop sending this frame */
2307 saved_size = 0;
2308 }
2309 else if (txdw0 & (CP_TX_TCPCS|CP_TX_UDPCS))
2310 {
7cdeb319 2311 DPRINTF("+++ C+ mode need TCP or UDP checksum\n");
718da2b9
FB		 2312
2313 /* maximum IP header length is 60 bytes */
2314 uint8_t saved_ip_header[60];
2315 memcpy(saved_ip_header, eth_payload_data, hlen);
2316
2317 uint8_t *data_to_checksum = eth_payload_data + hlen - 12;
2318 // size_t data_to_checksum_len = eth_payload_len - hlen + 12;
6cadb320
FB		 2319
2320 /* add 4 TCP pseudoheader fields */
2321 /* copy IP source and destination fields */
718da2b9 2322 memcpy(data_to_checksum, saved_ip_header + 12, 8);
6cadb320 2323
718da2b9 2324 if ((txdw0 & CP_TX_TCPCS) && ip_protocol == IP_PROTO_TCP)
6cadb320 2325 {
7cdeb319
BP		 2326 DPRINTF("+++ C+ mode calculating TCP checksum for "
2327 "packet with %d bytes data\n", ip_data_len);
6cadb320 2328
718da2b9
FB		 2329 ip_pseudo_header *p_tcpip_hdr = (ip_pseudo_header *)data_to_checksum;
2330 p_tcpip_hdr->zeros = 0;
2331 p_tcpip_hdr->ip_proto = IP_PROTO_TCP;
2332 p_tcpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
6cadb320 2333
718da2b9 2334 tcp_header* p_tcp_hdr = (tcp_header *) (data_to_checksum+12);
6cadb320
FB		 2335
2336 p_tcp_hdr->th_sum = 0;
2337
718da2b9 2338 int tcp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
7cdeb319
BP		 2339 DPRINTF("+++ C+ mode TCP checksum %04x\n",
2340 tcp_checksum);
6cadb320
FB		 2341
2342 p_tcp_hdr->th_sum = tcp_checksum;
2343 }
718da2b9 2344 else if ((txdw0 & CP_TX_UDPCS) && ip_protocol == IP_PROTO_UDP)
6cadb320 2345 {
7cdeb319
BP		 2346 DPRINTF("+++ C+ mode calculating UDP checksum for "
2347 "packet with %d bytes data\n", ip_data_len);
6cadb320 2348
718da2b9
FB		 2349 ip_pseudo_header *p_udpip_hdr = (ip_pseudo_header *)data_to_checksum;
2350 p_udpip_hdr->zeros = 0;
2351 p_udpip_hdr->ip_proto = IP_PROTO_UDP;
2352 p_udpip_hdr->ip_payload = cpu_to_be16(ip_data_len);
6cadb320 2353
718da2b9 2354 udp_header *p_udp_hdr = (udp_header *) (data_to_checksum+12);
6cadb320 2355
6cadb320
FB		 2356 p_udp_hdr->uh_sum = 0;
2357
718da2b9 2358 int udp_checksum = ip_checksum(data_to_checksum, ip_data_len + 12);
7cdeb319
BP		 2359 DPRINTF("+++ C+ mode UDP checksum %04x\n",
2360 udp_checksum);
6cadb320 2361
6cadb320
FB		 2362 p_udp_hdr->uh_sum = udp_checksum;
2363 }
2364
2365 /* restore IP header */
718da2b9 2366 memcpy(eth_payload_data, saved_ip_header, hlen);
6cadb320
FB		 2367 }
2368 }
2369 }
2370
2371 /* update tally counter */
2372 ++s->tally_counters.TxOk;
2373
7cdeb319 2374 DPRINTF("+++ C+ mode transmitting %d bytes packet\n", saved_size);
6cadb320 2375
bf6b87a8
BP		 2376 rtl8139_transfer_frame(s, saved_buffer, saved_size, 1,
2377 (uint8_t *) dot1q_buffer);
6cadb320
FB		 2378
2379 /* restore card space if there was no recursion and reset offset */
2380 if (!s->cplus_txbuffer)
2381 {
2382 s->cplus_txbuffer = saved_buffer;
2383 s->cplus_txbuffer_len = saved_buffer_len;
2384 s->cplus_txbuffer_offset = 0;
2385 }
2386 else
2387 {
7267c094 2388 g_free(saved_buffer);
6cadb320 2389 }
a41b2ff2
PB		 2390 }
2391 else
2392 {
7cdeb319 2393 DPRINTF("+++ C+ mode transmission continue to next descriptor\n");
a41b2ff2
PB		 2394 }
2395
a41b2ff2
PB		 2396 return 1;
2397}
2398
2399static void rtl8139_cplus_transmit(RTL8139State *s)
2400{
2401 int txcount = 0;
2402
2403 while (rtl8139_cplus_transmit_one(s))
2404 {
2405 ++txcount;
2406 }
2407
2408 /* Mark transfer completed */
2409 if (!txcount)
2410 {
7cdeb319
BP		 2411 DPRINTF("C+ mode : transmitter queue stalled, current TxDesc = %d\n",
2412 s->currCPlusTxDesc);
a41b2ff2
PB		 2413 }
2414 else
2415 {
2416 /* update interrupt status */
2417 s->IntrStatus |= TxOK;
2418 rtl8139_update_irq(s);
2419 }
2420}
2421
2422static void rtl8139_transmit(RTL8139State *s)
2423{
2424 int descriptor = s->currTxDesc, txcount = 0;
2425
2426 /*while*/
2427 if (rtl8139_transmit_one(s, descriptor))
2428 {
2429 ++s->currTxDesc;
2430 s->currTxDesc %= 4;
2431 ++txcount;
2432 }
2433
2434 /* Mark transfer completed */
2435 if (!txcount)
2436 {
7cdeb319
BP		 2437 DPRINTF("transmitter queue stalled, current TxDesc = %d\n",
2438 s->currTxDesc);
a41b2ff2
PB		 2439 }
2440}
2441
2442static void rtl8139_TxStatus_write(RTL8139State *s, uint32_t txRegOffset, uint32_t val)
2443{
2444
2445 int descriptor = txRegOffset/4;
6cadb320
FB		 2446
2447 /* handle C+ transmit mode register configuration */
2448
2c3891ab 2449 if (s->cplus_enabled)
6cadb320 2450 {
7cdeb319
BP		 2451 DPRINTF("RTL8139C+ DTCCR write offset=0x%x val=0x%08x "
2452 "descriptor=%d\n", txRegOffset, val, descriptor);
6cadb320
FB		 2453
2454 /* handle Dump Tally Counters command */
2455 s->TxStatus[descriptor] = val;
2456
2457 if (descriptor == 0 && (val & 0x8))
2458 {
a8170e5e 2459 hwaddr tc_addr = rtl8139_addr64(s->TxStatus[0] & ~0x3f, s->TxStatus[1]);
6cadb320
FB		 2460
2461 /* dump tally counters to specified memory location */
3ada003a 2462 RTL8139TallyCounters_dma_write(s, tc_addr);
6cadb320
FB		 2463
2464 /* mark dump completed */
2465 s->TxStatus[0] &= ~0x8;
2466 }
2467
2468 return;
2469 }
2470
7cdeb319
BP		 2471 DPRINTF("TxStatus write offset=0x%x val=0x%08x descriptor=%d\n",
2472 txRegOffset, val, descriptor);
a41b2ff2
PB		 2473
2474 /* mask only reserved bits */
2475 val &= ~0xff00c000; /* these bits are reset on write */
2476 val = SET_MASKED(val, 0x00c00000, s->TxStatus[descriptor]);
2477
2478 s->TxStatus[descriptor] = val;
2479
2480 /* attempt to start transmission */
2481 rtl8139_transmit(s);
2482}
2483
3e48dd4a
SH		 2484static uint32_t rtl8139_TxStatus_TxAddr_read(RTL8139State *s, uint32_t regs[],
2485 uint32_t base, uint8_t addr,
2486 int size)
a41b2ff2 2487{
3e48dd4a 2488 uint32_t reg = (addr - base) / 4;
afe0a595
JW		 2489 uint32_t offset = addr & 0x3;
2490 uint32_t ret = 0;
2491
2492 if (addr & (size - 1)) {
3e48dd4a
SH		 2493 DPRINTF("not implemented read for TxStatus/TxAddr "
2494 "addr=0x%x size=0x%x\n", addr, size);
afe0a595
JW		 2495 return ret;
2496 }
a41b2ff2 2497
afe0a595
JW		 2498 switch (size) {
2499 case 1: /* fall through */
2500 case 2: /* fall through */
2501 case 4:
bdc62e62 2502 ret = (regs[reg] >> offset * 8) & (((uint64_t)1 << (size * 8)) - 1);
3e48dd4a
SH		 2503 DPRINTF("TxStatus/TxAddr[%d] read addr=0x%x size=0x%x val=0x%08x\n",
2504 reg, addr, size, ret);
afe0a595
JW		 2505 break;
2506 default:
3e48dd4a 2507 DPRINTF("unsupported size 0x%x of TxStatus/TxAddr reading\n", size);
afe0a595
JW		 2508 break;
2509 }
a41b2ff2
PB		 2510
2511 return ret;
2512}
2513
2514static uint16_t rtl8139_TSAD_read(RTL8139State *s)
2515{
2516 uint16_t ret = 0;
2517
2518 /* Simulate TSAD, it is read only anyway */
2519
2520 ret = ((s->TxStatus[3] & TxStatOK )?TSAD_TOK3:0)
2521 |((s->TxStatus[2] & TxStatOK )?TSAD_TOK2:0)
2522 |((s->TxStatus[1] & TxStatOK )?TSAD_TOK1:0)
2523 |((s->TxStatus[0] & TxStatOK )?TSAD_TOK0:0)
2524
2525 |((s->TxStatus[3] & TxUnderrun)?TSAD_TUN3:0)
2526 |((s->TxStatus[2] & TxUnderrun)?TSAD_TUN2:0)
2527 |((s->TxStatus[1] & TxUnderrun)?TSAD_TUN1:0)
2528 |((s->TxStatus[0] & TxUnderrun)?TSAD_TUN0:0)
3b46e624 2529
a41b2ff2
PB		 2530 |((s->TxStatus[3] & TxAborted )?TSAD_TABT3:0)
2531 |((s->TxStatus[2] & TxAborted )?TSAD_TABT2:0)
2532 |((s->TxStatus[1] & TxAborted )?TSAD_TABT1:0)
2533 |((s->TxStatus[0] & TxAborted )?TSAD_TABT0:0)
3b46e624 2534
a41b2ff2
PB		 2535 |((s->TxStatus[3] & TxHostOwns )?TSAD_OWN3:0)
2536 |((s->TxStatus[2] & TxHostOwns )?TSAD_OWN2:0)
2537 |((s->TxStatus[1] & TxHostOwns )?TSAD_OWN1:0)
2538 |((s->TxStatus[0] & TxHostOwns )?TSAD_OWN0:0) ;
3b46e624 2539
a41b2ff2 2540
7cdeb319 2541 DPRINTF("TSAD read val=0x%04x\n", ret);
a41b2ff2
PB		 2542
2543 return ret;
2544}
2545
2546static uint16_t rtl8139_CSCR_read(RTL8139State *s)
2547{
2548 uint16_t ret = s->CSCR;
2549
7cdeb319 2550 DPRINTF("CSCR read val=0x%04x\n", ret);
a41b2ff2
PB		 2551
2552 return ret;
2553}
2554
2555static void rtl8139_TxAddr_write(RTL8139State *s, uint32_t txAddrOffset, uint32_t val)
2556{
7cdeb319 2557 DPRINTF("TxAddr write offset=0x%x val=0x%08x\n", txAddrOffset, val);
a41b2ff2 2558
290a0933 2559 s->TxAddr[txAddrOffset/4] = val;
a41b2ff2
PB		 2560}
2561
2562static uint32_t rtl8139_TxAddr_read(RTL8139State *s, uint32_t txAddrOffset)
2563{
290a0933 2564 uint32_t ret = s->TxAddr[txAddrOffset/4];
a41b2ff2 2565
7cdeb319 2566 DPRINTF("TxAddr read offset=0x%x val=0x%08x\n", txAddrOffset, ret);
a41b2ff2
PB		 2567
2568 return ret;
2569}
2570
2571static void rtl8139_RxBufPtr_write(RTL8139State *s, uint32_t val)
2572{
7cdeb319 2573 DPRINTF("RxBufPtr write val=0x%04x\n", val);
a41b2ff2
PB		 2574
2575 /* this value is off by 16 */
2576 s->RxBufPtr = MOD2(val + 0x10, s->RxBufferSize);
2577
00b7ade8
SH		 2578 /* more buffer space may be available so try to receive */
2579 qemu_flush_queued_packets(qemu_get_queue(s->nic));
2580
7cdeb319
BP		 2581 DPRINTF(" CAPR write: rx buffer length %d head 0x%04x read 0x%04x\n",
2582 s->RxBufferSize, s->RxBufAddr, s->RxBufPtr);
a41b2ff2
PB		 2583}
2584
2585static uint32_t rtl8139_RxBufPtr_read(RTL8139State *s)
2586{
2587 /* this value is off by 16 */
2588 uint32_t ret = s->RxBufPtr - 0x10;
2589
7cdeb319 2590 DPRINTF("RxBufPtr read val=0x%04x\n", ret);
6cadb320
FB		 2591
2592 return ret;
2593}
2594
2595static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s)
2596{
2597 /* this value is NOT off by 16 */
2598 uint32_t ret = s->RxBufAddr;
2599
7cdeb319 2600 DPRINTF("RxBufAddr read val=0x%04x\n", ret);
a41b2ff2
PB		 2601
2602 return ret;
2603}
2604
2605static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val)
2606{
7cdeb319 2607 DPRINTF("RxBuf write val=0x%08x\n", val);
a41b2ff2
PB		 2608
2609 s->RxBuf = val;
2610
2611 /* may need to reset rxring here */
2612}
2613
2614static uint32_t rtl8139_RxBuf_read(RTL8139State *s)
2615{
2616 uint32_t ret = s->RxBuf;
2617
7cdeb319 2618 DPRINTF("RxBuf read val=0x%08x\n", ret);
a41b2ff2
PB		 2619
2620 return ret;
2621}
2622
2623static void rtl8139_IntrMask_write(RTL8139State *s, uint32_t val)
2624{
7cdeb319 2625 DPRINTF("IntrMask write(w) val=0x%04x\n", val);
a41b2ff2 2626
ebabb67a 2627 /* mask unwritable bits */
a41b2ff2
PB		 2628 val = SET_MASKED(val, 0x1e00, s->IntrMask);
2629
2630 s->IntrMask = val;
2631
74475455 2632 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
a41b2ff2 2633 rtl8139_update_irq(s);
05447803 2634
a41b2ff2
PB		 2635}
2636
2637static uint32_t rtl8139_IntrMask_read(RTL8139State *s)
2638{
2639 uint32_t ret = s->IntrMask;
2640
7cdeb319 2641 DPRINTF("IntrMask read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 2642
2643 return ret;
2644}
2645
2646static void rtl8139_IntrStatus_write(RTL8139State *s, uint32_t val)
2647{
7cdeb319 2648 DPRINTF("IntrStatus write(w) val=0x%04x\n", val);
a41b2ff2
PB		 2649
2650#if 0
2651
2652 /* writing to ISR has no effect */
2653
2654 return;
2655
2656#else
2657 uint16_t newStatus = s->IntrStatus & ~val;
2658
ebabb67a 2659 /* mask unwritable bits */
a41b2ff2
PB		 2660 newStatus = SET_MASKED(newStatus, 0x1e00, s->IntrStatus);
2661
2662 /* writing 1 to interrupt status register bit clears it */
2663 s->IntrStatus = 0;
2664 rtl8139_update_irq(s);
2665
2666 s->IntrStatus = newStatus;
05447803
FZ		 2667 /*
2668 * Computing if we miss an interrupt here is not that correct but
2669 * considered that we should have had already an interrupt
2670 * and probably emulated is slower is better to assume this resetting was
26404edc 2671 * done before testing on previous rtl8139_update_irq lead to IRQ losing
05447803 2672 */
74475455 2673 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
a41b2ff2 2674 rtl8139_update_irq(s);
05447803 2675
a41b2ff2
PB		 2676#endif
2677}
2678
2679static uint32_t rtl8139_IntrStatus_read(RTL8139State *s)
2680{
74475455 2681 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
05447803 2682
a41b2ff2
PB		 2683 uint32_t ret = s->IntrStatus;
2684
7cdeb319 2685 DPRINTF("IntrStatus read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 2686
2687#if 0
2688
2689 /* reading ISR clears all interrupts */
2690 s->IntrStatus = 0;
2691
2692 rtl8139_update_irq(s);
2693
2694#endif
2695
2696 return ret;
2697}
2698
2699static void rtl8139_MultiIntr_write(RTL8139State *s, uint32_t val)
2700{
7cdeb319 2701 DPRINTF("MultiIntr write(w) val=0x%04x\n", val);
a41b2ff2 2702
ebabb67a 2703 /* mask unwritable bits */
a41b2ff2
PB		 2704 val = SET_MASKED(val, 0xf000, s->MultiIntr);
2705
2706 s->MultiIntr = val;
2707}
2708
2709static uint32_t rtl8139_MultiIntr_read(RTL8139State *s)
2710{
2711 uint32_t ret = s->MultiIntr;
2712
7cdeb319 2713 DPRINTF("MultiIntr read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 2714
2715 return ret;
2716}
2717
2718static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
2719{
2720 RTL8139State *s = opaque;
2721
a41b2ff2
PB		 2722 switch (addr)
2723 {
2724 case MAC0 ... MAC0+5:
2725 s->phys[addr - MAC0] = val;
2726 break;
2727 case MAC0+6 ... MAC0+7:
2728 /* reserved */
2729 break;
2730 case MAR0 ... MAR0+7:
2731 s->mult[addr - MAR0] = val;
2732 break;
2733 case ChipCmd:
2734 rtl8139_ChipCmd_write(s, val);
2735 break;
2736 case Cfg9346:
2737 rtl8139_Cfg9346_write(s, val);
2738 break;
2739 case TxConfig: /* windows driver sometimes writes using byte-lenth call */
2740 rtl8139_TxConfig_writeb(s, val);
2741 break;
2742 case Config0:
2743 rtl8139_Config0_write(s, val);
2744 break;
2745 case Config1:
2746 rtl8139_Config1_write(s, val);
2747 break;
2748 case Config3:
2749 rtl8139_Config3_write(s, val);
2750 break;
2751 case Config4:
2752 rtl8139_Config4_write(s, val);
2753 break;
2754 case Config5:
2755 rtl8139_Config5_write(s, val);
2756 break;
2757 case MediaStatus:
2758 /* ignore */
7cdeb319
BP		 2759 DPRINTF("not implemented write(b) to MediaStatus val=0x%02x\n",
2760 val);
a41b2ff2
PB		 2761 break;
2762
2763 case HltClk:
7cdeb319 2764 DPRINTF("HltClk write val=0x%08x\n", val);
a41b2ff2
PB		 2765 if (val == 'R')
2766 {
2767 s->clock_enabled = 1;
2768 }
2769 else if (val == 'H')
2770 {
2771 s->clock_enabled = 0;
2772 }
2773 break;
2774
2775 case TxThresh:
7cdeb319 2776 DPRINTF("C+ TxThresh write(b) val=0x%02x\n", val);
a41b2ff2
PB		 2777 s->TxThresh = val;
2778 break;
2779
2780 case TxPoll:
7cdeb319 2781 DPRINTF("C+ TxPoll write(b) val=0x%02x\n", val);
a41b2ff2
PB		 2782 if (val & (1 << 7))
2783 {
7cdeb319
BP		 2784 DPRINTF("C+ TxPoll high priority transmission (not "
2785 "implemented)\n");
a41b2ff2
PB		 2786 //rtl8139_cplus_transmit(s);
2787 }
2788 if (val & (1 << 6))
2789 {
7cdeb319 2790 DPRINTF("C+ TxPoll normal priority transmission\n");
a41b2ff2
PB		 2791 rtl8139_cplus_transmit(s);
2792 }
2793
2794 break;
2795
2796 default:
7cdeb319
BP		 2797 DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
2798 val);
a41b2ff2
PB		 2799 break;
2800 }
2801}
2802
2803static void rtl8139_io_writew(void *opaque, uint8_t addr, uint32_t val)
2804{
2805 RTL8139State *s = opaque;
2806
a41b2ff2
PB		 2807 switch (addr)
2808 {
2809 case IntrMask:
2810 rtl8139_IntrMask_write(s, val);
2811 break;
2812
2813 case IntrStatus:
2814 rtl8139_IntrStatus_write(s, val);
2815 break;
2816
2817 case MultiIntr:
2818 rtl8139_MultiIntr_write(s, val);
2819 break;
2820
2821 case RxBufPtr:
2822 rtl8139_RxBufPtr_write(s, val);
2823 break;
2824
2825 case BasicModeCtrl:
2826 rtl8139_BasicModeCtrl_write(s, val);
2827 break;
2828 case BasicModeStatus:
2829 rtl8139_BasicModeStatus_write(s, val);
2830 break;
2831 case NWayAdvert:
7cdeb319 2832 DPRINTF("NWayAdvert write(w) val=0x%04x\n", val);
a41b2ff2
PB		 2833 s->NWayAdvert = val;
2834 break;
2835 case NWayLPAR:
7cdeb319 2836 DPRINTF("forbidden NWayLPAR write(w) val=0x%04x\n", val);
a41b2ff2
PB		 2837 break;
2838 case NWayExpansion:
7cdeb319 2839 DPRINTF("NWayExpansion write(w) val=0x%04x\n", val);
a41b2ff2
PB		 2840 s->NWayExpansion = val;
2841 break;
2842
2843 case CpCmd:
2844 rtl8139_CpCmd_write(s, val);
2845 break;
2846
6cadb320
FB		 2847 case IntrMitigate:
2848 rtl8139_IntrMitigate_write(s, val);
2849 break;
2850
a41b2ff2 2851 default:
7cdeb319
BP		 2852 DPRINTF("ioport write(w) addr=0x%x val=0x%04x via write(b)\n",
2853 addr, val);
a41b2ff2 2854
a41b2ff2
PB		 2855 rtl8139_io_writeb(opaque, addr, val & 0xff);
2856 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
a41b2ff2
PB		 2857 break;
2858 }
2859}
2860
05447803
FZ		 2861static void rtl8139_set_next_tctr_time(RTL8139State *s, int64_t current_time)
2862{
2863 int64_t pci_time, next_time;
2864 uint32_t low_pci;
2865
7cdeb319 2866 DPRINTF("entered rtl8139_set_next_tctr_time\n");
05447803
FZ		 2867
2868 if (s->TimerExpire && current_time >= s->TimerExpire) {
2869 s->IntrStatus |= PCSTimeout;
2870 rtl8139_update_irq(s);
2871 }
2872
2873 /* Set QEMU timer only if needed that is
2874 * - TimerInt <> 0 (we have a timer)
2875 * - mask = 1 (we want an interrupt timer)
2876 * - irq = 0 (irq is not already active)
2877 * If any of above change we need to compute timer again
2878 * Also we must check if timer is passed without QEMU timer
2879 */
2880 s->TimerExpire = 0;
2881 if (!s->TimerInt) {
2882 return;
2883 }
2884
2885 pci_time = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
2886 get_ticks_per_sec());
2887 low_pci = pci_time & 0xffffffff;
2888 pci_time = pci_time - low_pci + s->TimerInt;
2889 if (low_pci >= s->TimerInt) {
2890 pci_time += 0x100000000LL;
2891 }
2892 next_time = s->TCTR_base + muldiv64(pci_time, get_ticks_per_sec(),
2893 PCI_FREQUENCY);
2894 s->TimerExpire = next_time;
2895
2896 if ((s->IntrMask & PCSTimeout) != 0 && (s->IntrStatus & PCSTimeout) == 0) {
2897 qemu_mod_timer(s->timer, next_time);
2898 }
2899}
2900
a41b2ff2
PB		 2901static void rtl8139_io_writel(void *opaque, uint8_t addr, uint32_t val)
2902{
2903 RTL8139State *s = opaque;
2904
a41b2ff2
PB		 2905 switch (addr)
2906 {
2907 case RxMissed:
7cdeb319 2908 DPRINTF("RxMissed clearing on write\n");
a41b2ff2
PB		 2909 s->RxMissed = 0;
2910 break;
2911
2912 case TxConfig:
2913 rtl8139_TxConfig_write(s, val);
2914 break;
2915
2916 case RxConfig:
2917 rtl8139_RxConfig_write(s, val);
2918 break;
2919
2920 case TxStatus0 ... TxStatus0+4*4-1:
2921 rtl8139_TxStatus_write(s, addr-TxStatus0, val);
2922 break;
2923
2924 case TxAddr0 ... TxAddr0+4*4-1:
2925 rtl8139_TxAddr_write(s, addr-TxAddr0, val);
2926 break;
2927
2928 case RxBuf:
2929 rtl8139_RxBuf_write(s, val);
2930 break;
2931
2932 case RxRingAddrLO:
7cdeb319 2933 DPRINTF("C+ RxRing low bits write val=0x%08x\n", val);
a41b2ff2
PB		 2934 s->RxRingAddrLO = val;
2935 break;
2936
2937 case RxRingAddrHI:
7cdeb319 2938 DPRINTF("C+ RxRing high bits write val=0x%08x\n", val);
a41b2ff2
PB		 2939 s->RxRingAddrHI = val;
2940 break;
2941
6cadb320 2942 case Timer:
7cdeb319 2943 DPRINTF("TCTR Timer reset on write\n");
74475455 2944 s->TCTR_base = qemu_get_clock_ns(vm_clock);
05447803 2945 rtl8139_set_next_tctr_time(s, s->TCTR_base);
6cadb320
FB		 2946 break;
2947
2948 case FlashReg:
7cdeb319 2949 DPRINTF("FlashReg TimerInt write val=0x%08x\n", val);
05447803
FZ		 2950 if (s->TimerInt != val) {
2951 s->TimerInt = val;
74475455 2952 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
05447803 2953 }
6cadb320
FB		 2954 break;
2955
a41b2ff2 2956 default:
7cdeb319
BP		 2957 DPRINTF("ioport write(l) addr=0x%x val=0x%08x via write(b)\n",
2958 addr, val);
a41b2ff2
PB		 2959 rtl8139_io_writeb(opaque, addr, val & 0xff);
2960 rtl8139_io_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2961 rtl8139_io_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2962 rtl8139_io_writeb(opaque, addr + 3, (val >> 24) & 0xff);
a41b2ff2
PB		 2963 break;
2964 }
2965}
2966
2967static uint32_t rtl8139_io_readb(void *opaque, uint8_t addr)
2968{
2969 RTL8139State *s = opaque;
2970 int ret;
2971
a41b2ff2
PB		 2972 switch (addr)
2973 {
2974 case MAC0 ... MAC0+5:
2975 ret = s->phys[addr - MAC0];
2976 break;
2977 case MAC0+6 ... MAC0+7:
2978 ret = 0;
2979 break;
2980 case MAR0 ... MAR0+7:
2981 ret = s->mult[addr - MAR0];
2982 break;
afe0a595 2983 case TxStatus0 ... TxStatus0+4*4-1:
3e48dd4a
SH		 2984 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0,
2985 addr, 1);
afe0a595 2986 break;
a41b2ff2
PB		 2987 case ChipCmd:
2988 ret = rtl8139_ChipCmd_read(s);
2989 break;
2990 case Cfg9346:
2991 ret = rtl8139_Cfg9346_read(s);
2992 break;
2993 case Config0:
2994 ret = rtl8139_Config0_read(s);
2995 break;
2996 case Config1:
2997 ret = rtl8139_Config1_read(s);
2998 break;
2999 case Config3:
3000 ret = rtl8139_Config3_read(s);
3001 break;
3002 case Config4:
3003 ret = rtl8139_Config4_read(s);
3004 break;
3005 case Config5:
3006 ret = rtl8139_Config5_read(s);
3007 break;
3008
3009 case MediaStatus:
9e12c5af
JW		 3010 /* The LinkDown bit of MediaStatus is inverse with link status */
3011 ret = 0xd0 | (~s->BasicModeStatus & 0x04);
7cdeb319 3012 DPRINTF("MediaStatus read 0x%x\n", ret);
a41b2ff2
PB		 3013 break;
3014
3015 case HltClk:
3016 ret = s->clock_enabled;
7cdeb319 3017 DPRINTF("HltClk read 0x%x\n", ret);
a41b2ff2
PB		 3018 break;
3019
3020 case PCIRevisionID:
6cadb320 3021 ret = RTL8139_PCI_REVID;
7cdeb319 3022 DPRINTF("PCI Revision ID read 0x%x\n", ret);
a41b2ff2
PB		 3023 break;
3024
3025 case TxThresh:
3026 ret = s->TxThresh;
7cdeb319 3027 DPRINTF("C+ TxThresh read(b) val=0x%02x\n", ret);
a41b2ff2
PB		 3028 break;
3029
3030 case 0x43: /* Part of TxConfig register. Windows driver tries to read it */
3031 ret = s->TxConfig >> 24;
7cdeb319 3032 DPRINTF("RTL8139C TxConfig at 0x43 read(b) val=0x%02x\n", ret);
a41b2ff2
PB		 3033 break;
3034
3035 default:
7cdeb319 3036 DPRINTF("not implemented read(b) addr=0x%x\n", addr);
a41b2ff2
PB		 3037 ret = 0;
3038 break;
3039 }
3040
3041 return ret;
3042}
3043
3044static uint32_t rtl8139_io_readw(void *opaque, uint8_t addr)
3045{
3046 RTL8139State *s = opaque;
3047 uint32_t ret;
3048
a41b2ff2
PB		 3049 switch (addr)
3050 {
afe0a595 3051 case TxAddr0 ... TxAddr0+4*4-1:
3e48dd4a 3052 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxAddr, TxAddr0, addr, 2);
afe0a595 3053 break;
a41b2ff2
PB		 3054 case IntrMask:
3055 ret = rtl8139_IntrMask_read(s);
3056 break;
3057
3058 case IntrStatus:
3059 ret = rtl8139_IntrStatus_read(s);
3060 break;
3061
3062 case MultiIntr:
3063 ret = rtl8139_MultiIntr_read(s);
3064 break;
3065
3066 case RxBufPtr:
3067 ret = rtl8139_RxBufPtr_read(s);
3068 break;
3069
6cadb320
FB		 3070 case RxBufAddr:
3071 ret = rtl8139_RxBufAddr_read(s);
3072 break;
3073
a41b2ff2
PB		 3074 case BasicModeCtrl:
3075 ret = rtl8139_BasicModeCtrl_read(s);
3076 break;
3077 case BasicModeStatus:
3078 ret = rtl8139_BasicModeStatus_read(s);
3079 break;
3080 case NWayAdvert:
3081 ret = s->NWayAdvert;
7cdeb319 3082 DPRINTF("NWayAdvert read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 3083 break;
3084 case NWayLPAR:
3085 ret = s->NWayLPAR;
7cdeb319 3086 DPRINTF("NWayLPAR read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 3087 break;
3088 case NWayExpansion:
3089 ret = s->NWayExpansion;
7cdeb319 3090 DPRINTF("NWayExpansion read(w) val=0x%04x\n", ret);
a41b2ff2
PB		 3091 break;
3092
3093 case CpCmd:
3094 ret = rtl8139_CpCmd_read(s);
3095 break;
3096
6cadb320
FB		 3097 case IntrMitigate:
3098 ret = rtl8139_IntrMitigate_read(s);
3099 break;
3100
a41b2ff2
PB		 3101 case TxSummary:
3102 ret = rtl8139_TSAD_read(s);
3103 break;
3104
3105 case CSCR:
3106 ret = rtl8139_CSCR_read(s);
3107 break;
3108
3109 default:
7cdeb319 3110 DPRINTF("ioport read(w) addr=0x%x via read(b)\n", addr);
a41b2ff2 3111
a41b2ff2
PB		 3112 ret = rtl8139_io_readb(opaque, addr);
3113 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
a41b2ff2 3114
7cdeb319 3115 DPRINTF("ioport read(w) addr=0x%x val=0x%04x\n", addr, ret);
a41b2ff2
PB		 3116 break;
3117 }
3118
3119 return ret;
3120}
3121
3122static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
3123{
3124 RTL8139State *s = opaque;
3125 uint32_t ret;
3126
a41b2ff2
PB		 3127 switch (addr)
3128 {
3129 case RxMissed:
3130 ret = s->RxMissed;
3131
7cdeb319 3132 DPRINTF("RxMissed read val=0x%08x\n", ret);
a41b2ff2
PB		 3133 break;
3134
3135 case TxConfig:
3136 ret = rtl8139_TxConfig_read(s);
3137 break;
3138
3139 case RxConfig:
3140 ret = rtl8139_RxConfig_read(s);
3141 break;
3142
3143 case TxStatus0 ... TxStatus0+4*4-1:
3e48dd4a
SH		 3144 ret = rtl8139_TxStatus_TxAddr_read(s, s->TxStatus, TxStatus0,
3145 addr, 4);
a41b2ff2
PB		 3146 break;
3147
3148 case TxAddr0 ... TxAddr0+4*4-1:
3149 ret = rtl8139_TxAddr_read(s, addr-TxAddr0);
3150 break;
3151
3152 case RxBuf:
3153 ret = rtl8139_RxBuf_read(s);
3154 break;
3155
3156 case RxRingAddrLO:
3157 ret = s->RxRingAddrLO;
7cdeb319 3158 DPRINTF("C+ RxRing low bits read val=0x%08x\n", ret);
a41b2ff2
PB		 3159 break;
3160
3161 case RxRingAddrHI:
3162 ret = s->RxRingAddrHI;
7cdeb319 3163 DPRINTF("C+ RxRing high bits read val=0x%08x\n", ret);
6cadb320
FB		 3164 break;
3165
3166 case Timer:
74475455 3167 ret = muldiv64(qemu_get_clock_ns(vm_clock) - s->TCTR_base,
05447803 3168 PCI_FREQUENCY, get_ticks_per_sec());
7cdeb319 3169 DPRINTF("TCTR Timer read val=0x%08x\n", ret);
6cadb320
FB		 3170 break;
3171
3172 case FlashReg:
3173 ret = s->TimerInt;
7cdeb319 3174 DPRINTF("FlashReg TimerInt read val=0x%08x\n", ret);
a41b2ff2
PB		 3175 break;
3176
3177 default:
7cdeb319 3178 DPRINTF("ioport read(l) addr=0x%x via read(b)\n", addr);
a41b2ff2 3179
a41b2ff2
PB		 3180 ret = rtl8139_io_readb(opaque, addr);
3181 ret |= rtl8139_io_readb(opaque, addr + 1) << 8;
3182 ret |= rtl8139_io_readb(opaque, addr + 2) << 16;
3183 ret |= rtl8139_io_readb(opaque, addr + 3) << 24;
a41b2ff2 3184
7cdeb319 3185 DPRINTF("read(l) addr=0x%x val=%08x\n", addr, ret);
a41b2ff2
PB		 3186 break;
3187 }
3188
3189 return ret;
3190}
3191
3192/* */
3193
a8170e5e 3194static void rtl8139_mmio_writeb(void *opaque, hwaddr addr, uint32_t val)
a41b2ff2
PB		 3195{
3196 rtl8139_io_writeb(opaque, addr & 0xFF, val);
3197}
3198
a8170e5e 3199static void rtl8139_mmio_writew(void *opaque, hwaddr addr, uint32_t val)
a41b2ff2
PB		 3200{
3201 rtl8139_io_writew(opaque, addr & 0xFF, val);
3202}
3203
a8170e5e 3204static void rtl8139_mmio_writel(void *opaque, hwaddr addr, uint32_t val)
a41b2ff2
PB		 3205{
3206 rtl8139_io_writel(opaque, addr & 0xFF, val);
3207}
3208
a8170e5e 3209static uint32_t rtl8139_mmio_readb(void *opaque, hwaddr addr)
a41b2ff2
PB		 3210{
3211 return rtl8139_io_readb(opaque, addr & 0xFF);
3212}
3213
a8170e5e 3214static uint32_t rtl8139_mmio_readw(void *opaque, hwaddr addr)
a41b2ff2 3215{
5fedc612 3216 uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
5fedc612 3217 return val;
a41b2ff2
PB		 3218}
3219
a8170e5e 3220static uint32_t rtl8139_mmio_readl(void *opaque, hwaddr addr)
a41b2ff2 3221{
5fedc612 3222 uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
5fedc612 3223 return val;
a41b2ff2
PB		 3224}
3225
060110c3 3226static int rtl8139_post_load(void *opaque, int version_id)
a41b2ff2 3227{
6597ebbb 3228 RTL8139State* s = opaque;
74475455 3229 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
060110c3 3230 if (version_id < 4) {
2c3891ab
AL		 3231 s->cplus_enabled = s->CpCmd != 0;
3232 }
3233
9e12c5af
JW		 3234 /* nc.link_down can't be migrated, so infer link_down according
3235 * to link status bit in BasicModeStatus */
b356f76d 3236 qemu_get_queue(s->nic)->link_down = (s->BasicModeStatus & 0x04) == 0;
9e12c5af 3237
a41b2ff2
PB		 3238 return 0;
3239}
3240
c574ba5a
AW		 3241static bool rtl8139_hotplug_ready_needed(void *opaque)
3242{
3243 return qdev_machine_modified();
3244}
3245
3246static const VMStateDescription vmstate_rtl8139_hotplug_ready ={
3247 .name = "rtl8139/hotplug_ready",
3248 .version_id = 1,
3249 .minimum_version_id = 1,
3250 .minimum_version_id_old = 1,
3251 .fields = (VMStateField []) {
3252 VMSTATE_END_OF_LIST()
3253 }
3254};
3255
05447803
FZ		 3256static void rtl8139_pre_save(void *opaque)
3257{
3258 RTL8139State* s = opaque;
74475455 3259 int64_t current_time = qemu_get_clock_ns(vm_clock);
05447803
FZ		 3260
3261 /* set IntrStatus correctly */
3262 rtl8139_set_next_tctr_time(s, current_time);
3263 s->TCTR = muldiv64(current_time - s->TCTR_base, PCI_FREQUENCY,
3264 get_ticks_per_sec());
bd80f3fc 3265 s->rtl8139_mmio_io_addr_dummy = 0;
05447803
FZ		 3266}
3267
060110c3
JQ		 3268static const VMStateDescription vmstate_rtl8139 = {
3269 .name = "rtl8139",
3270 .version_id = 4,
3271 .minimum_version_id = 3,
3272 .minimum_version_id_old = 3,
3273 .post_load = rtl8139_post_load,
05447803 3274 .pre_save = rtl8139_pre_save,
060110c3
JQ		 3275 .fields = (VMStateField []) {
3276 VMSTATE_PCI_DEVICE(dev, RTL8139State),
3277 VMSTATE_PARTIAL_BUFFER(phys, RTL8139State, 6),
3278 VMSTATE_BUFFER(mult, RTL8139State),
3279 VMSTATE_UINT32_ARRAY(TxStatus, RTL8139State, 4),
3280 VMSTATE_UINT32_ARRAY(TxAddr, RTL8139State, 4),
3281
3282 VMSTATE_UINT32(RxBuf, RTL8139State),
3283 VMSTATE_UINT32(RxBufferSize, RTL8139State),
3284 VMSTATE_UINT32(RxBufPtr, RTL8139State),
3285 VMSTATE_UINT32(RxBufAddr, RTL8139State),
3286
3287 VMSTATE_UINT16(IntrStatus, RTL8139State),
3288 VMSTATE_UINT16(IntrMask, RTL8139State),
3289
3290 VMSTATE_UINT32(TxConfig, RTL8139State),
3291 VMSTATE_UINT32(RxConfig, RTL8139State),
3292 VMSTATE_UINT32(RxMissed, RTL8139State),
3293 VMSTATE_UINT16(CSCR, RTL8139State),
3294
3295 VMSTATE_UINT8(Cfg9346, RTL8139State),
3296 VMSTATE_UINT8(Config0, RTL8139State),
3297 VMSTATE_UINT8(Config1, RTL8139State),
3298 VMSTATE_UINT8(Config3, RTL8139State),
3299 VMSTATE_UINT8(Config4, RTL8139State),
3300 VMSTATE_UINT8(Config5, RTL8139State),
3301
3302 VMSTATE_UINT8(clock_enabled, RTL8139State),
3303 VMSTATE_UINT8(bChipCmdState, RTL8139State),
3304
3305 VMSTATE_UINT16(MultiIntr, RTL8139State),
3306
3307 VMSTATE_UINT16(BasicModeCtrl, RTL8139State),
3308 VMSTATE_UINT16(BasicModeStatus, RTL8139State),
3309 VMSTATE_UINT16(NWayAdvert, RTL8139State),
3310 VMSTATE_UINT16(NWayLPAR, RTL8139State),
3311 VMSTATE_UINT16(NWayExpansion, RTL8139State),
3312
3313 VMSTATE_UINT16(CpCmd, RTL8139State),
3314 VMSTATE_UINT8(TxThresh, RTL8139State),
3315
3316 VMSTATE_UNUSED(4),
3317 VMSTATE_MACADDR(conf.macaddr, RTL8139State),
c574ba5a 3318 VMSTATE_INT32(rtl8139_mmio_io_addr_dummy, RTL8139State),
060110c3
JQ		 3319
3320 VMSTATE_UINT32(currTxDesc, RTL8139State),
3321 VMSTATE_UINT32(currCPlusRxDesc, RTL8139State),
3322 VMSTATE_UINT32(currCPlusTxDesc, RTL8139State),
3323 VMSTATE_UINT32(RxRingAddrLO, RTL8139State),
3324 VMSTATE_UINT32(RxRingAddrHI, RTL8139State),
3325
3326 VMSTATE_UINT16_ARRAY(eeprom.contents, RTL8139State, EEPROM_9346_SIZE),
3327 VMSTATE_INT32(eeprom.mode, RTL8139State),
3328 VMSTATE_UINT32(eeprom.tick, RTL8139State),
3329 VMSTATE_UINT8(eeprom.address, RTL8139State),
3330 VMSTATE_UINT16(eeprom.input, RTL8139State),
3331 VMSTATE_UINT16(eeprom.output, RTL8139State),
3332
3333 VMSTATE_UINT8(eeprom.eecs, RTL8139State),
3334 VMSTATE_UINT8(eeprom.eesk, RTL8139State),
3335 VMSTATE_UINT8(eeprom.eedi, RTL8139State),
3336 VMSTATE_UINT8(eeprom.eedo, RTL8139State),
3337
3338 VMSTATE_UINT32(TCTR, RTL8139State),
3339 VMSTATE_UINT32(TimerInt, RTL8139State),
3340 VMSTATE_INT64(TCTR_base, RTL8139State),
3341
3342 VMSTATE_STRUCT(tally_counters, RTL8139State, 0,
3343 vmstate_tally_counters, RTL8139TallyCounters),
3344
3345 VMSTATE_UINT32_V(cplus_enabled, RTL8139State, 4),
3346 VMSTATE_END_OF_LIST()
c574ba5a
AW		 3347 },
3348 .subsections = (VMStateSubsection []) {
3349 {
3350 .vmsd = &vmstate_rtl8139_hotplug_ready,
3351 .needed = rtl8139_hotplug_ready_needed,
3352 }, {
3353 /* empty */
3354 }
060110c3
JQ		 3355 }
3356};
3357
a41b2ff2
PB		 3358/***********************************************************/
3359/* PCI RTL8139 definitions */
3360
1bebb0ad
AG		 3361static void rtl8139_ioport_write(void *opaque, hwaddr addr,
3362 uint64_t val, unsigned size)
3363{
3364 switch (size) {
3365 case 1:
3366 rtl8139_io_writeb(opaque, addr, val);
3367 break;
3368 case 2:
3369 rtl8139_io_writew(opaque, addr, val);
3370 break;
3371 case 4:
3372 rtl8139_io_writel(opaque, addr, val);
3373 break;
3374 }
3375}
3376
3377static uint64_t rtl8139_ioport_read(void *opaque, hwaddr addr,
3378 unsigned size)
3379{
3380 switch (size) {
3381 case 1:
3382 return rtl8139_io_readb(opaque, addr);
3383 case 2:
3384 return rtl8139_io_readw(opaque, addr);
3385 case 4:
3386 return rtl8139_io_readl(opaque, addr);
3387 }
3388
3389 return -1;
3390}
a41b2ff2 3391
bd80f3fc 3392static const MemoryRegionOps rtl8139_io_ops = {
1bebb0ad
AG		 3393 .read = rtl8139_ioport_read,
3394 .write = rtl8139_ioport_write,
3395 .impl = {
3396 .min_access_size = 1,
3397 .max_access_size = 4,
3398 },
bd80f3fc 3399 .endianness = DEVICE_LITTLE_ENDIAN,
a41b2ff2
PB		 3400};
3401
bd80f3fc
AK		 3402static const MemoryRegionOps rtl8139_mmio_ops = {
3403 .old_mmio = {
3404 .read = {
3405 rtl8139_mmio_readb,
3406 rtl8139_mmio_readw,
3407 rtl8139_mmio_readl,
3408 },
3409 .write = {
3410 rtl8139_mmio_writeb,
3411 rtl8139_mmio_writew,
3412 rtl8139_mmio_writel,
3413 },
3414 },
3415 .endianness = DEVICE_LITTLE_ENDIAN,
a41b2ff2
PB		 3416};
3417
6cadb320
FB		 3418static void rtl8139_timer(void *opaque)
3419{
3420 RTL8139State *s = opaque;
3421
6cadb320
FB		 3422 if (!s->clock_enabled)
3423 {
7cdeb319 3424 DPRINTF(">>> timer: clock is not running\n");
6cadb320
FB		 3425 return;
3426 }
3427
05447803
FZ		 3428 s->IntrStatus |= PCSTimeout;
3429 rtl8139_update_irq(s);
74475455 3430 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
6cadb320 3431}
6cadb320 3432
4e68f7a0 3433static void rtl8139_cleanup(NetClientState *nc)
b946a153 3434{
cc1f0f45 3435 RTL8139State *s = qemu_get_nic_opaque(nc);
b946a153 3436
1673ad51 3437 s->nic = NULL;
254111ec
GH		 3438}
3439
f90c2bcd 3440static void pci_rtl8139_uninit(PCIDevice *dev)
254111ec
GH		 3441{
3442 RTL8139State *s = DO_UPCAST(RTL8139State, dev, dev);
3443
bd80f3fc
AK		 3444 memory_region_destroy(&s->bar_io);
3445 memory_region_destroy(&s->bar_mem);
b946a153 3446 if (s->cplus_txbuffer) {
7267c094 3447 g_free(s->cplus_txbuffer);
b946a153
AL		 3448 s->cplus_txbuffer = NULL;
3449 }
b946a153
AL		 3450 qemu_del_timer(s->timer);
3451 qemu_free_timer(s->timer);
948ecf21 3452 qemu_del_nic(s->nic);
b946a153
AL		 3453}
3454
9e12c5af
JW		 3455static void rtl8139_set_link_status(NetClientState *nc)
3456{
cc1f0f45 3457 RTL8139State *s = qemu_get_nic_opaque(nc);
9e12c5af
JW		 3458
3459 if (nc->link_down) {
3460 s->BasicModeStatus &= ~0x04;
3461 } else {
3462 s->BasicModeStatus |= 0x04;
3463 }
3464
3465 s->IntrStatus |= RxUnderrun;
3466 rtl8139_update_irq(s);
3467}
3468
1673ad51 3469static NetClientInfo net_rtl8139_info = {
2be64a68 3470 .type = NET_CLIENT_OPTIONS_KIND_NIC,
1673ad51
MM		 3471 .size = sizeof(NICState),
3472 .can_receive = rtl8139_can_receive,
3473 .receive = rtl8139_receive,
3474 .cleanup = rtl8139_cleanup,
9e12c5af 3475 .link_status_changed = rtl8139_set_link_status,
1673ad51
MM		 3476};
3477
81a322d4 3478static int pci_rtl8139_init(PCIDevice *dev)
a41b2ff2 3479{
efd6dd45 3480 RTL8139State * s = DO_UPCAST(RTL8139State, dev, dev);
a41b2ff2 3481 uint8_t *pci_conf;
3b46e624 3482
efd6dd45 3483 pci_conf = s->dev.config;
817e0b6f 3484 pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */
0b5b3547
MT		 3485 /* TODO: start of capability list, but no capability
3486 * list bit in status register, and offset 0xdc seems unused. */
3487 pci_conf[PCI_CAPABILITY_LIST] = 0xdc;
a41b2ff2 3488
eedfac6f
PB		 3489 memory_region_init_io(&s->bar_io, OBJECT(s), &rtl8139_io_ops, s,
3490 "rtl8139", 0x100);
3491 memory_region_init_io(&s->bar_mem, OBJECT(s), &rtl8139_mmio_ops, s,
3492 "rtl8139", 0x100);
e824b2cc
AK		 3493 pci_register_bar(&s->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->bar_io);
3494 pci_register_bar(&s->dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar_mem);
a41b2ff2 3495
254111ec 3496 qemu_macaddr_default_if_unset(&s->conf.macaddr);
c1699988 3497
7165448a
WD		 3498 /* prepare eeprom */
3499 s->eeprom.contents[0] = 0x8129;
3500#if 1
3501 /* PCI vendor and device ID should be mirrored here */
3502 s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
3503 s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
3504#endif
3505 s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
3506 s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
3507 s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
3508
1673ad51 3509 s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf,
f79f2bfc 3510 object_get_typename(OBJECT(dev)), dev->qdev.id, s);
b356f76d 3511 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
6cadb320
FB		 3512
3513 s->cplus_txbuffer = NULL;
3514 s->cplus_txbuffer_len = 0;
3515 s->cplus_txbuffer_offset = 0;
3b46e624 3516
05447803 3517 s->TimerExpire = 0;
74475455
PB		 3518 s->timer = qemu_new_timer_ns(vm_clock, rtl8139_timer, s);
3519 rtl8139_set_next_tctr_time(s, qemu_get_clock_ns(vm_clock));
1ca4d09a
GN		 3520
3521 add_boot_device_path(s->conf.bootindex, &dev->qdev, "/ethernet-phy@0");
3522
81a322d4 3523 return 0;
a41b2ff2 3524}
9d07d757 3525
40021f08
AL		 3526static Property rtl8139_properties[] = {
3527 DEFINE_NIC_PROPERTIES(RTL8139State, conf),
3528 DEFINE_PROP_END_OF_LIST(),
3529};
3530
3531static void rtl8139_class_init(ObjectClass *klass, void *data)
3532{
39bffca2 3533 DeviceClass *dc = DEVICE_CLASS(klass);
40021f08
AL		 3534 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
3535
3536 k->init = pci_rtl8139_init;
3537 k->exit = pci_rtl8139_uninit;
c45e5b5b 3538 k->romfile = "efi-rtl8139.rom";
40021f08
AL		 3539 k->vendor_id = PCI_VENDOR_ID_REALTEK;
3540 k->device_id = PCI_DEVICE_ID_REALTEK_8139;
3541 k->revision = RTL8139_PCI_REVID; /* >=0x20 is for 8139C+ */
3542 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
39bffca2
AL		 3543 dc->reset = rtl8139_reset;
3544 dc->vmsd = &vmstate_rtl8139;
3545 dc->props = rtl8139_properties;
40021f08
AL		 3546}
3547
8c43a6f0 3548static const TypeInfo rtl8139_info = {
39bffca2
AL		 3549 .name = "rtl8139",
3550 .parent = TYPE_PCI_DEVICE,
3551 .instance_size = sizeof(RTL8139State),
3552 .class_init = rtl8139_class_init,
0aab0d3a
GH		 3553};
3554
83f7d43a 3555static void rtl8139_register_types(void)
9d07d757 3556{
39bffca2 3557 type_register_static(&rtl8139_info);
9d07d757
PB		 3558}
3559
83f7d43a 3560type_init(rtl8139_register_types)
Qemu copy for testing