VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/DevPCNet.cpp@ 69223

Last change on this file since 69223 was 69046, checked in by vboxsync, 7 years ago

Global: replace fall-through comments with RT_FALL_THRU().
bugref:8192: gcc warnings
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1/* $Id: DevPCNet.cpp 69046 2017-10-11 16:11:23Z vboxsync $ */
2/** @file
3 * DevPCNet - AMD PCnet-PCI II / PCnet-FAST III (Am79C970A / Am79C973) Ethernet Controller Emulation.
4 *
5 * This software was written to be compatible with the specifications:
6 * AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
7 * AMD Publication# 19436 Rev:E Amendment/0 Issue Date: June 2000
8 * and
9 * todo
10 */
11
12/*
13 * Copyright (C) 2006-2016 Oracle Corporation
14 *
15 * This file is part of VirtualBox Open Source Edition (OSE), as
16 * available from http://www.virtualbox.org. This file is free software;
17 * you can redistribute it and/or modify it under the terms of the GNU
18 * General Public License (GPL) as published by the Free Software
19 * Foundation, in version 2 as it comes in the "COPYING" file of the
20 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
21 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
22 * --------------------------------------------------------------------
23 *
24 * This code is based on:
25 *
26 * AMD PC-Net II (Am79C970A) emulation
27 *
28 * Copyright (c) 2004 Antony T Curtis
29 *
30 * Permission is hereby granted, free of charge, to any person obtaining a copy
31 * of this software and associated documentation files (the "Software"), to deal
32 * in the Software without restriction, including without limitation the rights
33 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
34 * copies of the Software, and to permit persons to whom the Software is
35 * furnished to do so, subject to the following conditions:
36 *
37 * The above copyright notice and this permission notice shall be included in
38 * all copies or substantial portions of the Software.
39 *
40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
41 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
43 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
44 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
45 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
46 * THE SOFTWARE.
47 */
48
49
50/*********************************************************************************************************************************
51* Header Files *
52*********************************************************************************************************************************/
53#define LOG_GROUP LOG_GROUP_DEV_PCNET
54#include <VBox/vmm/pdmdev.h>
55#include <VBox/vmm/pdmnetifs.h>
56#include <VBox/vmm/pgm.h>
57#include <VBox/version.h>
58#include <iprt/asm.h>
59#include <iprt/assert.h>
60#include <iprt/critsect.h>
61#include <iprt/net.h>
62#include <iprt/string.h>
63#include <iprt/time.h>
64#ifdef IN_RING3
65# include <iprt/mem.h>
66# include <iprt/semaphore.h>
67# include <iprt/uuid.h>
68#endif
69
70#include "VBoxDD.h"
71
72
73/*********************************************************************************************************************************
74* Defined Constants And Macros *
75*********************************************************************************************************************************/
76/* Enable this to catch writes to the ring descriptors instead of using excessive polling */
77/* #define PCNET_NO_POLLING */
78
79/* Enable to handle frequent io reads in the guest context (recommended) */
80#define PCNET_GC_ENABLED
81
82#if defined(LOG_ENABLED)
83#define PCNET_DEBUG_IO
84#define PCNET_DEBUG_BCR
85#define PCNET_DEBUG_CSR
86#define PCNET_DEBUG_RMD
87#define PCNET_DEBUG_TMD
88#define PCNET_DEBUG_MATCH
89#define PCNET_DEBUG_MII
90#endif
91
92#define PCNET_IOPORT_SIZE 0x20
93#define PCNET_PNPMMIO_SIZE 0x20
94
95#define PCNET_SAVEDSTATE_VERSION 10
96
97#define BCR_MAX_RAP 50
98#define MII_MAX_REG 32
99#define CSR_MAX_REG 128
100
101/** Maximum number of times we report a link down to the guest (failure to send frame) */
102#define PCNET_MAX_LINKDOWN_REPORTED 3
103
104/** Maximum frame size we handle */
105#define MAX_FRAME 1536
106
107#define PCNETSTATE_2_DEVINS(pPCNet) ((pPCNet)->CTX_SUFF(pDevIns))
108#define PCIDEV_2_PCNETSTATE(pPciDev) RT_FROM_MEMBER((pPciDev), PCNETSTATE, PciDev)
109#define PCNET_INST_NR (PCNETSTATE_2_DEVINS(pThis)->iInstance)
110
111/** @name Bus configuration registers
112 * @{ */
113#define BCR_MSRDA 0
114#define BCR_MSWRA 1
115#define BCR_MC 2
116#define BCR_RESERVED3 3
117#define BCR_LNKST 4
118#define BCR_LED1 5
119#define BCR_LED2 6
120#define BCR_LED3 7
121#define BCR_RESERVED8 8
122#define BCR_FDC 9
123/* 10 - 15 = reserved */
124#define BCR_IOBASEL 16 /* Reserved */
125#define BCR_IOBASEU 16 /* Reserved */
126#define BCR_BSBC 18
127#define BCR_EECAS 19
128#define BCR_SWS 20
129#define BCR_INTCON 21 /* Reserved */
130#define BCR_PLAT 22
131#define BCR_PCISVID 23
132#define BCR_PCISID 24
133#define BCR_SRAMSIZ 25
134#define BCR_SRAMB 26
135#define BCR_SRAMIC 27
136#define BCR_EBADDRL 28
137#define BCR_EBADDRU 29
138#define BCR_EBD 30
139#define BCR_STVAL 31
140#define BCR_MIICAS 32
141#define BCR_MIIADDR 33
142#define BCR_MIIMDR 34
143#define BCR_PCIVID 35
144#define BCR_PMC_A 36
145#define BCR_DATA0 37
146#define BCR_DATA1 38
147#define BCR_DATA2 39
148#define BCR_DATA3 40
149#define BCR_DATA4 41
150#define BCR_DATA5 42
151#define BCR_DATA6 43
152#define BCR_DATA7 44
153#define BCR_PMR1 45
154#define BCR_PMR2 46
155#define BCR_PMR3 47
156/** @} */
157
158/** @name Bus configuration sub register accessors.
159 * @{ */
160#define BCR_DWIO(S) !!((S)->aBCR[BCR_BSBC] & 0x0080)
161#define BCR_SSIZE32(S) !!((S)->aBCR[BCR_SWS ] & 0x0100)
162#define BCR_SWSTYLE(S) ((S)->aBCR[BCR_SWS ] & 0x00FF)
163/** @} */
164
165/** @name CSR subregister accessors.
166 * @{ */
167#define CSR_INIT(S) !!((S)->aCSR[0] & 0x0001) /**< Init assertion */
168#define CSR_STRT(S) !!((S)->aCSR[0] & 0x0002) /**< Start assertion */
169#define CSR_STOP(S) !!((S)->aCSR[0] & 0x0004) /**< Stop assertion */
170#define CSR_TDMD(S) !!((S)->aCSR[0] & 0x0008) /**< Transmit demand. (perform xmit poll now (readable, settable, not clearable) */
171#define CSR_TXON(S) !!((S)->aCSR[0] & 0x0010) /**< Transmit on (readonly) */
172#define CSR_RXON(S) !!((S)->aCSR[0] & 0x0020) /**< Receive On */
173#define CSR_INEA(S) !!((S)->aCSR[0] & 0x0040) /**< Interrupt Enable */
174#define CSR_LAPPEN(S) !!((S)->aCSR[3] & 0x0020) /**< Look Ahead Packet Processing Enable */
175#define CSR_DXSUFLO(S) !!((S)->aCSR[3] & 0x0040) /**< Disable Transmit Stop on Underflow error */
176#define CSR_ASTRP_RCV(S) !!((S)->aCSR[4] & 0x0400) /**< Auto Strip Receive */
177#define CSR_DPOLL(S) !!((S)->aCSR[4] & 0x1000) /**< Disable Transmit Polling */
178#define CSR_SPND(S) !!((S)->aCSR[5] & 0x0001) /**< Suspend */
179#define CSR_LTINTEN(S) !!((S)->aCSR[5] & 0x4000) /**< Last Transmit Interrupt Enable */
180#define CSR_TOKINTD(S) !!((S)->aCSR[5] & 0x8000) /**< Transmit OK Interrupt Disable */
181
182#define CSR_STINT !!((S)->aCSR[7] & 0x0800) /**< Software Timer Interrupt */
183#define CSR_STINTE !!((S)->aCSR[7] & 0x0400) /**< Software Timer Interrupt Enable */
184
185#define CSR_DRX(S) !!((S)->aCSR[15] & 0x0001) /**< Disable Receiver */
186#define CSR_DTX(S) !!((S)->aCSR[15] & 0x0002) /**< Disable Transmit */
187#define CSR_LOOP(S) !!((S)->aCSR[15] & 0x0004) /**< Loopback Enable */
188#define CSR_DRCVPA(S) !!((S)->aCSR[15] & 0x2000) /**< Disable Receive Physical Address */
189#define CSR_DRCVBC(S) !!((S)->aCSR[15] & 0x4000) /**< Disable Receive Broadcast */
190#define CSR_PROM(S) !!((S)->aCSR[15] & 0x8000) /**< Promiscuous Mode */
191/** @} */
192
193#if !defined(RT_ARCH_X86) && !defined(RT_ARCH_AMD64)
194# error fix macros (and more in this file) for big-endian machines
195#endif
196
197/** @name CSR register accessors.
198 * @{ */
199#define CSR_IADR(S) (*(uint32_t*)((S)->aCSR + 1)) /**< Initialization Block Address */
200#define CSR_CRBA(S) (*(uint32_t*)((S)->aCSR + 18)) /**< Current Receive Buffer Address */
201#define CSR_CXBA(S) (*(uint32_t*)((S)->aCSR + 20)) /**< Current Transmit Buffer Address */
202#define CSR_NRBA(S) (*(uint32_t*)((S)->aCSR + 22)) /**< Next Receive Buffer Address */
203#define CSR_BADR(S) (*(uint32_t*)((S)->aCSR + 24)) /**< Base Address of Receive Ring */
204#define CSR_NRDA(S) (*(uint32_t*)((S)->aCSR + 26)) /**< Next Receive Descriptor Address */
205#define CSR_CRDA(S) (*(uint32_t*)((S)->aCSR + 28)) /**< Current Receive Descriptor Address */
206#define CSR_BADX(S) (*(uint32_t*)((S)->aCSR + 30)) /**< Base Address of Transmit Descriptor */
207#define CSR_NXDA(S) (*(uint32_t*)((S)->aCSR + 32)) /**< Next Transmit Descriptor Address */
208#define CSR_CXDA(S) (*(uint32_t*)((S)->aCSR + 34)) /**< Current Transmit Descriptor Address */
209#define CSR_NNRD(S) (*(uint32_t*)((S)->aCSR + 36)) /**< Next Next Receive Descriptor Address */
210#define CSR_NNXD(S) (*(uint32_t*)((S)->aCSR + 38)) /**< Next Next Transmit Descriptor Address */
211#define CSR_CRBC(S) ((S)->aCSR[40]) /**< Current Receive Byte Count */
212#define CSR_CRST(S) ((S)->aCSR[41]) /**< Current Receive Status */
213#define CSR_CXBC(S) ((S)->aCSR[42]) /**< Current Transmit Byte Count */
214#define CSR_CXST(S) ((S)->aCSR[43]) /**< Current transmit status */
215#define CSR_NRBC(S) ((S)->aCSR[44]) /**< Next Receive Byte Count */
216#define CSR_NRST(S) ((S)->aCSR[45]) /**< Next Receive Status */
217#define CSR_POLL(S) ((S)->aCSR[46]) /**< Transmit Poll Time Counter */
218#define CSR_PINT(S) ((S)->aCSR[47]) /**< Transmit Polling Interval */
219#define CSR_PXDA(S) (*(uint32_t*)((S)->aCSR + 60)) /**< Previous Transmit Descriptor Address*/
220#define CSR_PXBC(S) ((S)->aCSR[62]) /**< Previous Transmit Byte Count */
221#define CSR_PXST(S) ((S)->aCSR[63]) /**< Previous Transmit Status */
222#define CSR_NXBA(S) (*(uint32_t*)((S)->aCSR + 64)) /**< Next Transmit Buffer Address */
223#define CSR_NXBC(S) ((S)->aCSR[66]) /**< Next Transmit Byte Count */
224#define CSR_NXST(S) ((S)->aCSR[67]) /**< Next Transmit Status */
225#define CSR_RCVRC(S) ((S)->aCSR[72]) /**< Receive Descriptor Ring Counter */
226#define CSR_XMTRC(S) ((S)->aCSR[74]) /**< Transmit Descriptor Ring Counter */
227#define CSR_RCVRL(S) ((S)->aCSR[76]) /**< Receive Descriptor Ring Length */
228#define CSR_XMTRL(S) ((S)->aCSR[78]) /**< Transmit Descriptor Ring Length */
229#define CSR_MISSC(S) ((S)->aCSR[112]) /**< Missed Frame Count */
230/** @} */
231
232/** @name Version for the PCnet/FAST III 79C973 card
233 * @{ */
234#define CSR_VERSION_LOW_79C973 0x5003 /* the lower two bits must be 11b for AMD */
235#define CSR_VERSION_LOW_79C970A 0x1003 /* the lower two bits must be 11b for AMD */
236#define CSR_VERSION_HIGH 0x0262
237/** @} */
238
239/** Calculates the full physical address. */
240#define PHYSADDR(S,A) ((A) | (S)->GCUpperPhys)
241
242
243/*********************************************************************************************************************************
244* Structures and Typedefs *
245*********************************************************************************************************************************/
246/**
247 * PCNET state.
248 *
249 * @extends PDMPCIDEV
250 * @implements PDMIBASE
251 * @implements PDMINETWORKDOWN
252 * @implements PDMINETWORKCONFIG
253 * @implements PDMILEDPORTS
254 */
255typedef struct PCNETSTATE
256{
257 PDMPCIDEV PciDev;
258
259 /** Pointer to the device instance - R3. */
260 PPDMDEVINSR3 pDevInsR3;
261 /** Transmit signaller - R3. */
262 R3PTRTYPE(PPDMQUEUE) pXmitQueueR3;
263 /** Receive signaller - R3. */
264 R3PTRTYPE(PPDMQUEUE) pCanRxQueueR3;
265 /** Pointer to the connector of the attached network driver - R3. */
266 PPDMINETWORKUPR3 pDrvR3;
267 /** Pointer to the attached network driver. */
268 R3PTRTYPE(PPDMIBASE) pDrvBase;
269 /** LUN\#0 + status LUN: The base interface. */
270 PDMIBASE IBase;
271 /** LUN\#0: The network port interface. */
272 PDMINETWORKDOWN INetworkDown;
273 /** LUN\#0: The network config port interface. */
274 PDMINETWORKCONFIG INetworkConfig;
275 /** Software Interrupt timer - R3. */
276 PTMTIMERR3 pTimerSoftIntR3;
277#ifndef PCNET_NO_POLLING
278 /** Poll timer - R3. */
279 PTMTIMERR3 pTimerPollR3;
280#endif
281 /** Restore timer.
282 * This is used to disconnect and reconnect the link after a restore. */
283 PTMTIMERR3 pTimerRestore;
284
285 /** Pointer to the device instance - R0. */
286 PPDMDEVINSR0 pDevInsR0;
287 /** Receive signaller - R0. */
288 R0PTRTYPE(PPDMQUEUE) pCanRxQueueR0;
289 /** Transmit signaller - R0. */
290 R0PTRTYPE(PPDMQUEUE) pXmitQueueR0;
291 /** Pointer to the connector of the attached network driver - R0. */
292 PPDMINETWORKUPR0 pDrvR0;
293 /** Software Interrupt timer - R0. */
294 PTMTIMERR0 pTimerSoftIntR0;
295#ifndef PCNET_NO_POLLING
296 /** Poll timer - R0. */
297 PTMTIMERR0 pTimerPollR0;
298#endif
299
300 /** Pointer to the device instance - RC. */
301 PPDMDEVINSRC pDevInsRC;
302 /** Receive signaller - RC. */
303 RCPTRTYPE(PPDMQUEUE) pCanRxQueueRC;
304 /** Transmit signaller - RC. */
305 RCPTRTYPE(PPDMQUEUE) pXmitQueueRC;
306 /** Pointer to the connector of the attached network driver - RC. */
307 PPDMINETWORKUPRC pDrvRC;
308 /** Software Interrupt timer - RC. */
309 PTMTIMERRC pTimerSoftIntRC;
310#ifndef PCNET_NO_POLLING
311 /** Poll timer - RC. */
312 PTMTIMERRC pTimerPollRC;
313#endif
314
315 /** Alignment padding. */
316 uint32_t Alignment1;
317 /** Register Address Pointer */
318 uint32_t u32RAP;
319 /** Internal interrupt service */
320 int32_t iISR;
321 /** ??? */
322 uint32_t u32Lnkst;
323 /** Address of the RX descriptor table (ring). Loaded at init. */
324 RTGCPHYS32 GCRDRA;
325 /** Address of the TX descriptor table (ring). Loaded at init. */
326 RTGCPHYS32 GCTDRA;
327 uint8_t aPROM[16];
328 uint16_t aCSR[CSR_MAX_REG];
329 uint16_t aBCR[BCR_MAX_RAP];
330 uint16_t aMII[MII_MAX_REG];
331 /** Holds the bits which were really seen by the guest. Relevant are bits
332 * 8..14 (IDON, TINT, RINT, MERR, MISS, CERR, BABL). We don't allow the
333 * guest to clear any of these bits (by writing a ONE) before a bit was
334 * seen by the guest. */
335 uint16_t u16CSR0LastSeenByGuest;
336 /** Last time we polled the queues */
337 uint64_t u64LastPoll;
338
339 /** The loopback transmit buffer (avoid stack allocations). */
340 uint8_t abLoopBuf[4096];
341 /** The recv buffer. */
342 uint8_t abRecvBuf[4096];
343
344 /** Alignment padding. */
345 uint32_t Alignment2;
346
347 /** Size of a RX/TX descriptor (8 or 16 bytes according to SWSTYLE */
348 int iLog2DescSize;
349 /** Bits 16..23 in 16-bit mode */
350 RTGCPHYS32 GCUpperPhys;
351
352 /** Base address of the MMIO region. */
353 RTGCPHYS32 MMIOBase;
354 /** Base port of the I/O space region. */
355 RTIOPORT IOPortBase;
356 /** If set the link is currently up. */
357 bool fLinkUp;
358 /** If set the link is temporarily down because of a saved state load. */
359 bool fLinkTempDown;
360
361 /** Number of times we've reported the link down. */
362 RTUINT cLinkDownReported;
363 /** The configured MAC address. */
364 RTMAC MacConfigured;
365 /** Alignment padding. */
366 uint8_t Alignment3[2];
367
368 /** The LED. */
369 PDMLED Led;
370 /** Status LUN: The LED ports. */
371 PDMILEDPORTS ILeds;
372 /** Partner of ILeds. */
373 R3PTRTYPE(PPDMILEDCONNECTORS) pLedsConnector;
374
375 /** Access critical section. */
376 PDMCRITSECT CritSect;
377 /** Event semaphore for blocking on receive. */
378 RTSEMEVENT hEventOutOfRxSpace;
379 /** We are waiting/about to start waiting for more receive buffers. */
380 bool volatile fMaybeOutOfSpace;
381 /** True if we signal the guest that RX packets are missing. */
382 bool fSignalRxMiss;
383 /** Alignment padding. */
384 uint8_t Alignment4[HC_ARCH_BITS == 64 ? 2 : 6];
385
386#ifdef PCNET_NO_POLLING
387 PGMPHYSHANDLERTYPE hNoPollingHandlerType;
388 RTGCPHYS32 TDRAPhysOld;
389 uint32_t cbTDRAOld;
390
391 RTGCPHYS32 RDRAPhysOld;
392 uint32_t cbRDRAOld;
393
394 DECLRCCALLBACKMEMBER(int, pfnEMInterpretInstructionRC, (PVM pVM, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize));
395 DECLR0CALLBACKMEMBER(int, pfnEMInterpretInstructionR0, (PVM pVM, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize));
396#endif
397
398 /** Error counter for bad receive descriptors. */
399 uint32_t uCntBadRMD;
400 /* True if raw context is enabled. */
401 bool fGCEnabled;
402 /* True if R0 context is enabled. */
403 bool fR0Enabled;
404 /* True: Emulate Am79C973. False: Emulate 79C970A. */
405 bool fAm79C973;
406 /* Link speed to be reported through CSR68. */
407 bool fSharedRegion;
408 /* Alignment padding. */
409 uint32_t u32LinkSpeed;
410 /* MS to wait before we enable the link. */
411 uint32_t cMsLinkUpDelay;
412 /* Alignment padding. */
413 uint32_t Alignment6;
414
415 STAMCOUNTER StatReceiveBytes;
416 STAMCOUNTER StatTransmitBytes;
417#ifdef VBOX_WITH_STATISTICS
418 STAMPROFILEADV StatMMIOReadRZ;
419 STAMPROFILEADV StatMMIOReadR3;
420 STAMPROFILEADV StatMMIOWriteRZ;
421 STAMPROFILEADV StatMMIOWriteR3;
422 STAMPROFILEADV StatAPROMRead;
423 STAMPROFILEADV StatAPROMWrite;
424 STAMPROFILEADV StatIOReadRZ;
425 STAMPROFILEADV StatIOReadR3;
426 STAMPROFILEADV StatIOWriteRZ;
427 STAMPROFILEADV StatIOWriteR3;
428 STAMPROFILEADV StatTimer;
429 STAMPROFILEADV StatReceive;
430 STAMPROFILEADV StatTransmitR3;
431 STAMPROFILEADV StatTransmitRZ;
432 STAMCOUNTER StatTransmitCase1;
433 STAMCOUNTER StatTransmitCase2;
434 STAMPROFILE StatTransmitSendR3;
435 STAMPROFILE StatTransmitSendRZ;
436 STAMPROFILEADV StatTxLenCalcRZ;
437 STAMPROFILEADV StatTxLenCalcR3;
438 STAMPROFILEADV StatTdtePollRZ;
439 STAMPROFILEADV StatTdtePollR3;
440 STAMPROFILEADV StatTmdStoreRZ;
441 STAMPROFILEADV StatTmdStoreR3;
442 STAMPROFILEADV StatRdtePollR3;
443 STAMPROFILEADV StatRdtePollRZ;
444 STAMPROFILE StatRxOverflow;
445 STAMCOUNTER StatRxOverflowWakeup;
446 STAMCOUNTER aStatXmitFlush[16];
447 STAMCOUNTER aStatXmitChainCounts[16];
448 STAMCOUNTER StatXmitSkipCurrent;
449 STAMPROFILEADV StatInterrupt;
450 STAMPROFILEADV StatPollTimer;
451 STAMCOUNTER StatMIIReads;
452# ifdef PCNET_NO_POLLING
453 STAMCOUNTER StatRCVRingWrite;
454 STAMCOUNTER StatTXRingWrite;
455 STAMCOUNTER StatRingWriteR3;
456 STAMCOUNTER StatRingWriteR0;
457 STAMCOUNTER StatRingWriteRC;
458
459 STAMCOUNTER StatRingWriteFailedR3;
460 STAMCOUNTER StatRingWriteFailedR0;
461 STAMCOUNTER StatRingWriteFailedRC;
462
463 STAMCOUNTER StatRingWriteOutsideR3;
464 STAMCOUNTER StatRingWriteOutsideR0;
465 STAMCOUNTER StatRingWriteOutsideRC;
466# endif
467#endif /* VBOX_WITH_STATISTICS */
468} PCNETSTATE;
469//AssertCompileMemberAlignment(PCNETSTATE, StatReceiveBytes, 8);
470/** Pointer to a PC-Net state structure. */
471typedef PCNETSTATE *PPCNETSTATE;
472
473/** @todo All structs: big endian? */
474
475struct INITBLK16
476{
477 uint16_t mode; /**< copied into csr15 */
478 uint16_t padr1; /**< MAC 0..15 */
479 uint16_t padr2; /**< MAC 16..32 */
480 uint16_t padr3; /**< MAC 33..47 */
481 uint16_t ladrf1; /**< logical address filter 0..15 */
482 uint16_t ladrf2; /**< logical address filter 16..31 */
483 uint16_t ladrf3; /**< logical address filter 32..47 */
484 uint16_t ladrf4; /**< logical address filter 48..63 */
485 uint32_t rdra:24; /**< address of receive descriptor ring */
486 uint32_t res1:5; /**< reserved */
487 uint32_t rlen:3; /**< number of receive descriptor ring entries */
488 uint32_t tdra:24; /**< address of transmit descriptor ring */
489 uint32_t res2:5; /**< reserved */
490 uint32_t tlen:3; /**< number of transmit descriptor ring entries */
491};
492AssertCompileSize(INITBLK16, 24);
493
494/** bird: I've changed the type for the bitfields. They should only be 16-bit all together.
495 * frank: I've changed the bitfiled types to uint32_t to prevent compiler warnings. */
496struct INITBLK32
497{
498 uint16_t mode; /**< copied into csr15 */
499 uint16_t res1:4; /**< reserved */
500 uint16_t rlen:4; /**< number of receive descriptor ring entries */
501 uint16_t res2:4; /**< reserved */
502 uint16_t tlen:4; /**< number of transmit descriptor ring entries */
503 uint16_t padr1; /**< MAC 0..15 */
504 uint16_t padr2; /**< MAC 16..31 */
505 uint16_t padr3; /**< MAC 32..47 */
506 uint16_t res3; /**< reserved */
507 uint16_t ladrf1; /**< logical address filter 0..15 */
508 uint16_t ladrf2; /**< logical address filter 16..31 */
509 uint16_t ladrf3; /**< logical address filter 32..47 */
510 uint16_t ladrf4; /**< logical address filter 48..63 */
511 uint32_t rdra; /**< address of receive descriptor ring */
512 uint32_t tdra; /**< address of transmit descriptor ring */
513};
514AssertCompileSize(INITBLK32, 28);
515
516/** Transmit Message Descriptor */
517typedef struct TMD
518{
519 struct
520 {
521 uint32_t tbadr; /**< transmit buffer address */
522 } tmd0;
523 struct
524 {
525 uint32_t bcnt:12; /**< buffer byte count (two's complement) */
526 uint32_t ones:4; /**< must be 1111b */
527 uint32_t res:7; /**< reserved */
528 uint32_t bpe:1; /**< bus parity error */
529 uint32_t enp:1; /**< end of packet */
530 uint32_t stp:1; /**< start of packet */
531 uint32_t def:1; /**< deferred */
532 uint32_t one:1; /**< exactly one retry was needed to transmit a frame */
533 uint32_t ltint:1; /**< suppress interrupts after successful transmission */
534 uint32_t nofcs:1; /**< when set, the state of DXMTFCS is ignored and
535 transmitter FCS generation is activated. */
536 uint32_t err:1; /**< error occurred */
537 uint32_t own:1; /**< 0=owned by guest driver, 1=owned by controller */
538 } tmd1;
539 struct
540 {
541 uint32_t trc:4; /**< transmit retry count */
542 uint32_t res:12; /**< reserved */
543 uint32_t tdr:10; /**< ??? */
544 uint32_t rtry:1; /**< retry error */
545 uint32_t lcar:1; /**< loss of carrier */
546 uint32_t lcol:1; /**< late collision */
547 uint32_t exdef:1; /**< excessive deferral */
548 uint32_t uflo:1; /**< underflow error */
549 uint32_t buff:1; /**< out of buffers (ENP not found) */
550 } tmd2;
551 struct
552 {
553 uint32_t res; /**< reserved for user defined space */
554 } tmd3;
555} TMD;
556AssertCompileSize(TMD, 16);
557
558/** Receive Message Descriptor */
559typedef struct RMD
560{
561 struct
562 {
563 uint32_t rbadr; /**< receive buffer address */
564 } rmd0;
565 struct
566 {
567 uint32_t bcnt:12; /**< buffer byte count (two's complement) */
568 uint32_t ones:4; /**< must be 1111b */
569 uint32_t res:4; /**< reserved */
570 uint32_t bam:1; /**< broadcast address match */
571 uint32_t lafm:1; /**< logical filter address match */
572 uint32_t pam:1; /**< physical address match */
573 uint32_t bpe:1; /**< bus parity error */
574 uint32_t enp:1; /**< end of packet */
575 uint32_t stp:1; /**< start of packet */
576 uint32_t buff:1; /**< buffer error */
577 uint32_t crc:1; /**< crc error on incoming frame */
578 uint32_t oflo:1; /**< overflow error (lost all or part of incoming frame) */
579 uint32_t fram:1; /**< frame error */
580 uint32_t err:1; /**< error occurred */
581 uint32_t own:1; /**< 0=owned by guest driver, 1=owned by controller */
582 } rmd1;
583 struct
584 {
585 uint32_t mcnt:12; /**< message byte count */
586 uint32_t zeros:4; /**< 0000b */
587 uint32_t rpc:8; /**< receive frame tag */
588 uint32_t rcc:8; /**< receive frame tag + reserved */
589 } rmd2;
590 struct
591 {
592 uint32_t res; /**< reserved for user defined space */
593 } rmd3;
594} RMD;
595AssertCompileSize(RMD, 16);
596
597
598#ifndef VBOX_DEVICE_STRUCT_TESTCASE
599
600
601/*********************************************************************************************************************************
602* Internal Functions *
603*********************************************************************************************************************************/
604#define PRINT_TMD(T) Log2(( \
605 "TMD0 : TBADR=%#010x\n" \
606 "TMD1 : OWN=%d, ERR=%d, FCS=%d, LTI=%d, " \
607 "ONE=%d, DEF=%d, STP=%d, ENP=%d,\n" \
608 " BPE=%d, BCNT=%d\n" \
609 "TMD2 : BUF=%d, UFL=%d, EXD=%d, LCO=%d, " \
610 "LCA=%d, RTR=%d,\n" \
611 " TDR=%d, TRC=%d\n", \
612 (T)->tmd0.tbadr, \
613 (T)->tmd1.own, (T)->tmd1.err, (T)->tmd1.nofcs, \
614 (T)->tmd1.ltint, (T)->tmd1.one, (T)->tmd1.def, \
615 (T)->tmd1.stp, (T)->tmd1.enp, (T)->tmd1.bpe, \
616 4096-(T)->tmd1.bcnt, \
617 (T)->tmd2.buff, (T)->tmd2.uflo, (T)->tmd2.exdef,\
618 (T)->tmd2.lcol, (T)->tmd2.lcar, (T)->tmd2.rtry, \
619 (T)->tmd2.tdr, (T)->tmd2.trc))
620
621#define PRINT_RMD(R) Log2(( \
622 "RMD0 : RBADR=%#010x\n" \
623 "RMD1 : OWN=%d, ERR=%d, FRAM=%d, OFLO=%d, " \
624 "CRC=%d, BUFF=%d, STP=%d, ENP=%d,\n " \
625 "BPE=%d, PAM=%d, LAFM=%d, BAM=%d, ONES=%d, BCNT=%d\n" \
626 "RMD2 : RCC=%d, RPC=%d, MCNT=%d, ZEROS=%d\n", \
627 (R)->rmd0.rbadr, \
628 (R)->rmd1.own, (R)->rmd1.err, (R)->rmd1.fram, \
629 (R)->rmd1.oflo, (R)->rmd1.crc, (R)->rmd1.buff, \
630 (R)->rmd1.stp, (R)->rmd1.enp, (R)->rmd1.bpe, \
631 (R)->rmd1.pam, (R)->rmd1.lafm, (R)->rmd1.bam, \
632 (R)->rmd1.ones, 4096-(R)->rmd1.bcnt, \
633 (R)->rmd2.rcc, (R)->rmd2.rpc, (R)->rmd2.mcnt, \
634 (R)->rmd2.zeros))
635
636#ifndef PCNET_NO_POLLING
637static void pcnetPollTimerStart(PPCNETSTATE pThis);
638#endif
639static int pcnetXmitPending(PPCNETSTATE pThis, bool fOnWorkerThread);
640#ifdef PCNET_NO_POLLING
641# ifndef IN_RING3
642RT_C_DECLS_BEGIN
643DECLEXPORT(FNPGMRZPHYSPFHANDLER) pcnetHandleRingWritePf;
644RT_C_DECLS_END
645# endif
646#endif
647
648
649
650/**
651 * Checks if the link is up.
652 * @returns true if the link is up.
653 * @returns false if the link is down.
654 */
655DECLINLINE(bool) pcnetIsLinkUp(PPCNETSTATE pThis)
656{
657 return pThis->pDrvR3 && !pThis->fLinkTempDown && pThis->fLinkUp;
658}
659
660/**
661 * Load transmit message descriptor
662 * Make sure we read the own flag first.
663 *
664 * @param pThis adapter private data
665 * @param addr physical address of the descriptor
666 * @param fRetIfNotOwn return immediately after reading the own flag if we don't own the descriptor
667 * @return true if we own the descriptor, false otherwise
668 */
669DECLINLINE(bool) pcnetTmdLoad(PPCNETSTATE pThis, TMD *tmd, RTGCPHYS32 addr, bool fRetIfNotOwn)
670{
671 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
672 uint8_t ownbyte;
673
674 if (RT_UNLIKELY(BCR_SWSTYLE(pThis) == 0))
675 {
676 uint16_t xda[4];
677
678 PDMDevHlpPhysRead(pDevIns, addr+3, &ownbyte, 1);
679 if (!(ownbyte & 0x80) && fRetIfNotOwn)
680 return false;
681 PDMDevHlpPhysRead(pDevIns, addr, (void*)&xda[0], sizeof(xda));
682 ((uint32_t *)tmd)[0] = (uint32_t)xda[0] | ((uint32_t)(xda[1] & 0x00ff) << 16);
683 ((uint32_t *)tmd)[1] = (uint32_t)xda[2] | ((uint32_t)(xda[1] & 0xff00) << 16);
684 ((uint32_t *)tmd)[2] = (uint32_t)xda[3] << 16;
685 ((uint32_t *)tmd)[3] = 0;
686 }
687 else if (RT_LIKELY(BCR_SWSTYLE(pThis) != 3))
688 {
689 PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
690 if (!(ownbyte & 0x80) && fRetIfNotOwn)
691 return false;
692 PDMDevHlpPhysRead(pDevIns, addr, (void*)tmd, 16);
693 }
694 else
695 {
696 uint32_t xda[4];
697 PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
698 if (!(ownbyte & 0x80) && fRetIfNotOwn)
699 return false;
700 PDMDevHlpPhysRead(pDevIns, addr, (void*)&xda[0], sizeof(xda));
701 ((uint32_t *)tmd)[0] = xda[2];
702 ((uint32_t *)tmd)[1] = xda[1];
703 ((uint32_t *)tmd)[2] = xda[0];
704 ((uint32_t *)tmd)[3] = xda[3];
705 }
706 /* Double check the own bit; guest drivers might be buggy and lock prefixes in the recompiler are ignored by other threads. */
707#ifdef DEBUG
708 if (tmd->tmd1.own == 1 && !(ownbyte & 0x80))
709 Log(("pcnetTmdLoad: own bit flipped while reading!!\n"));
710#endif
711 if (!(ownbyte & 0x80))
712 tmd->tmd1.own = 0;
713
714 return !!tmd->tmd1.own;
715}
716
717/**
718 * Store transmit message descriptor and hand it over to the host (the VM guest).
719 * Make sure that all data are transmitted before we clear the own flag.
720 */
721DECLINLINE(void) pcnetTmdStorePassHost(PPCNETSTATE pThis, TMD *tmd, RTGCPHYS32 addr)
722{
723 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatTmdStore), a);
724 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
725 if (RT_UNLIKELY(BCR_SWSTYLE(pThis) == 0))
726 {
727 uint16_t xda[4];
728 xda[0] = ((uint32_t *)tmd)[0] & 0xffff;
729 xda[1] = ((((uint32_t *)tmd)[0] >> 16) & 0xff) | ((((uint32_t *)tmd)[1]>>16) & 0xff00);
730 xda[2] = ((uint32_t *)tmd)[1] & 0xffff;
731 xda[3] = ((uint32_t *)tmd)[2] >> 16;
732 xda[1] |= 0x8000;
733 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)&xda[0], sizeof(xda));
734 xda[1] &= ~0x8000;
735 PDMDevHlpPCIPhysWrite(pDevIns, addr+3, (uint8_t*)xda + 3, 1);
736 }
737 else if (RT_LIKELY(BCR_SWSTYLE(pThis) != 3))
738 {
739 ((uint32_t*)tmd)[1] |= 0x80000000;
740 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)tmd, 16);
741 ((uint32_t*)tmd)[1] &= ~0x80000000;
742 PDMDevHlpPCIPhysWrite(pDevIns, addr+7, (uint8_t*)tmd + 7, 1);
743 }
744 else
745 {
746 uint32_t xda[4];
747 xda[0] = ((uint32_t *)tmd)[2];
748 xda[1] = ((uint32_t *)tmd)[1];
749 xda[2] = ((uint32_t *)tmd)[0];
750 xda[3] = ((uint32_t *)tmd)[3];
751 xda[1] |= 0x80000000;
752 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)&xda[0], sizeof(xda));
753 xda[1] &= ~0x80000000;
754 PDMDevHlpPCIPhysWrite(pDevIns, addr+7, (uint8_t*)xda + 7, 1);
755 }
756 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTmdStore), a);
757}
758
759/**
760 * Load receive message descriptor
761 * Make sure we read the own flag first.
762 *
763 * @param pThis adapter private data
764 * @param addr physical address of the descriptor
765 * @param fRetIfNotOwn return immediately after reading the own flag if we don't own the descriptor
766 * @return true if we own the descriptor, false otherwise
767 */
768DECLINLINE(bool) pcnetRmdLoad(PPCNETSTATE pThis, RMD *rmd, RTGCPHYS32 addr, bool fRetIfNotOwn)
769{
770 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
771 uint8_t ownbyte;
772
773 if (RT_UNLIKELY(BCR_SWSTYLE(pThis) == 0))
774 {
775 uint16_t rda[4];
776 PDMDevHlpPhysRead(pDevIns, addr+3, &ownbyte, 1);
777 if (!(ownbyte & 0x80) && fRetIfNotOwn)
778 return false;
779 PDMDevHlpPhysRead(pDevIns, addr, (void*)&rda[0], sizeof(rda));
780 ((uint32_t *)rmd)[0] = (uint32_t)rda[0] | ((rda[1] & 0x00ff) << 16);
781 ((uint32_t *)rmd)[1] = (uint32_t)rda[2] | ((rda[1] & 0xff00) << 16);
782 ((uint32_t *)rmd)[2] = (uint32_t)rda[3];
783 ((uint32_t *)rmd)[3] = 0;
784 }
785 else if (RT_LIKELY(BCR_SWSTYLE(pThis) != 3))
786 {
787 PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
788 if (!(ownbyte & 0x80) && fRetIfNotOwn)
789 return false;
790 PDMDevHlpPhysRead(pDevIns, addr, (void*)rmd, 16);
791 }
792 else
793 {
794 uint32_t rda[4];
795 PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
796 if (!(ownbyte & 0x80) && fRetIfNotOwn)
797 return false;
798 PDMDevHlpPhysRead(pDevIns, addr, (void*)&rda[0], sizeof(rda));
799 ((uint32_t *)rmd)[0] = rda[2];
800 ((uint32_t *)rmd)[1] = rda[1];
801 ((uint32_t *)rmd)[2] = rda[0];
802 ((uint32_t *)rmd)[3] = rda[3];
803 }
804 /* Double check the own bit; guest drivers might be buggy and lock prefixes in the recompiler are ignored by other threads. */
805#ifdef DEBUG
806 if (rmd->rmd1.own == 1 && !(ownbyte & 0x80))
807 Log(("pcnetRmdLoad: own bit flipped while reading!!\n"));
808#endif
809 if (!(ownbyte & 0x80))
810 rmd->rmd1.own = 0;
811
812 return !!rmd->rmd1.own;
813}
814
815
816/**
817 * Store receive message descriptor and hand it over to the host (the VM guest).
818 * Make sure that all data are transmitted before we clear the own flag.
819 */
820DECLINLINE(void) pcnetRmdStorePassHost(PPCNETSTATE pThis, RMD *rmd, RTGCPHYS32 addr)
821{
822 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
823 if (RT_UNLIKELY(BCR_SWSTYLE(pThis) == 0))
824 {
825 uint16_t rda[4];
826 rda[0] = ((uint32_t *)rmd)[0] & 0xffff;
827 rda[1] = ((((uint32_t *)rmd)[0]>>16) & 0xff) | ((((uint32_t *)rmd)[1]>>16) & 0xff00);
828 rda[2] = ((uint32_t *)rmd)[1] & 0xffff;
829 rda[3] = ((uint32_t *)rmd)[2] & 0xffff;
830 rda[1] |= 0x8000;
831 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)&rda[0], sizeof(rda));
832 rda[1] &= ~0x8000;
833 PDMDevHlpPCIPhysWrite(pDevIns, addr+3, (uint8_t*)rda + 3, 1);
834 }
835 else if (RT_LIKELY(BCR_SWSTYLE(pThis) != 3))
836 {
837 ((uint32_t*)rmd)[1] |= 0x80000000;
838 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)rmd, 16);
839 ((uint32_t*)rmd)[1] &= ~0x80000000;
840 PDMDevHlpPCIPhysWrite(pDevIns, addr+7, (uint8_t*)rmd + 7, 1);
841 }
842 else
843 {
844 uint32_t rda[4];
845 rda[0] = ((uint32_t *)rmd)[2];
846 rda[1] = ((uint32_t *)rmd)[1];
847 rda[2] = ((uint32_t *)rmd)[0];
848 rda[3] = ((uint32_t *)rmd)[3];
849 rda[1] |= 0x80000000;
850 PDMDevHlpPCIPhysWrite(pDevIns, addr, (void*)&rda[0], sizeof(rda));
851 rda[1] &= ~0x80000000;
852 PDMDevHlpPCIPhysWrite(pDevIns, addr+7, (uint8_t*)rda + 7, 1);
853 }
854}
855
856#ifdef IN_RING3
857/**
858 * Read+Write a TX/RX descriptor to prevent PDMDevHlpPCIPhysWrite() allocating
859 * pages later when we shouldn't schedule to EMT. Temporarily hack.
860 */
861static void pcnetDescTouch(PPCNETSTATE pThis, RTGCPHYS32 addr)
862{
863 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
864 uint8_t aBuf[16];
865 size_t cbDesc;
866 if (RT_UNLIKELY(BCR_SWSTYLE(pThis) == 0))
867 cbDesc = 8;
868 else
869 cbDesc = 16;
870 PDMDevHlpPhysRead(pDevIns, addr, aBuf, cbDesc);
871 PDMDevHlpPCIPhysWrite(pDevIns, addr, aBuf, cbDesc);
872}
873#endif /* IN_RING3 */
874
875/** Checks if it's a bad (as in invalid) RMD.*/
876#define IS_RMD_BAD(rmd) ((rmd).rmd1.ones != 15 || (rmd).rmd2.zeros != 0)
877
878/** The network card is the owner of the RDTE/TDTE, actually it is this driver */
879#define CARD_IS_OWNER(desc) (((desc) & 0x8000))
880
881/** The host is the owner of the RDTE/TDTE -- actually the VM guest. */
882#define HOST_IS_OWNER(desc) (!((desc) & 0x8000))
883
884#ifndef ETHER_IS_MULTICAST /* Net/Open BSD macro it seems */
885#define ETHER_IS_MULTICAST(a) ((*(uint8_t *)(a)) & 1)
886#endif
887
888#define ETHER_ADDR_LEN ETH_ALEN
889#define ETH_ALEN 6
890#pragma pack(1)
891struct ether_header /** @todo Use RTNETETHERHDR */
892{
893 uint8_t ether_dhost[ETH_ALEN]; /**< destination ethernet address */
894 uint8_t ether_shost[ETH_ALEN]; /**< source ethernet address */
895 uint16_t ether_type; /**< packet type ID field */
896};
897#pragma pack()
898
899#define PRINT_PKTHDR(BUF) do { \
900 struct ether_header *hdr = (struct ether_header *)(BUF); \
901 Log(("#%d packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, " \
902 "shost=%02x:%02x:%02x:%02x:%02x:%02x, " \
903 "type=%#06x (bcast=%d)\n", PCNET_INST_NR, \
904 hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2], \
905 hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5], \
906 hdr->ether_shost[0],hdr->ether_shost[1],hdr->ether_shost[2], \
907 hdr->ether_shost[3],hdr->ether_shost[4],hdr->ether_shost[5], \
908 htons(hdr->ether_type), \
909 !!ETHER_IS_MULTICAST(hdr->ether_dhost))); \
910} while (0)
911
912
913#define MULTICAST_FILTER_LEN 8
914
915DECLINLINE(uint32_t) lnc_mchash(const uint8_t *ether_addr)
916{
917#define LNC_POLYNOMIAL 0xEDB88320UL
918 uint32_t crc = 0xFFFFFFFF;
919 int idx, bit;
920 uint8_t data;
921
922 for (idx = 0; idx < ETHER_ADDR_LEN; idx++)
923 {
924 for (data = *ether_addr++, bit = 0; bit < MULTICAST_FILTER_LEN; bit++)
925 {
926 crc = (crc >> 1) ^ (((crc ^ data) & 1) ? LNC_POLYNOMIAL : 0);
927 data >>= 1;
928 }
929 }
930 return crc;
931#undef LNC_POLYNOMIAL
932}
933
934#define CRC(crc, ch) (crc = (crc >> 8) ^ crctab[(crc ^ (ch)) & 0xff])
935
936/* generated using the AUTODIN II polynomial
937 * x^32 + x^26 + x^23 + x^22 + x^16 +
938 * x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1
939 */
940static const uint32_t crctab[256] =
941{
942 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
943 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
944 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
945 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
946 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
947 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
948 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
949 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
950 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
951 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
952 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
953 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
954 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
955 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
956 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
957 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
958 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
959 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
960 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
961 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
962 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
963 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
964 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
965 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
966 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
967 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
968 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
969 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
970 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
971 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
972 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
973 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
974 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
975 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
976 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
977 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
978 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
979 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
980 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
981 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
982 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
983 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
984 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
985 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
986 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
987 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
988 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
989 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
990 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
991 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
992 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
993 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
994 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
995 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
996 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
997 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
998 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
999 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
1000 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
1001 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
1002 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
1003 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
1004 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
1005 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
1006};
1007
1008DECLINLINE(int) padr_match(PPCNETSTATE pThis, const uint8_t *buf, size_t size)
1009{
1010 struct ether_header *hdr = (struct ether_header *)buf;
1011 int result;
1012#if (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)) && !defined(PCNET_DEBUG_MATCH)
1013 result = !CSR_DRCVPA(pThis) && !memcmp(hdr->ether_dhost, pThis->aCSR + 12, 6);
1014#else
1015 uint8_t padr[6];
1016 padr[0] = pThis->aCSR[12] & 0xff;
1017 padr[1] = pThis->aCSR[12] >> 8;
1018 padr[2] = pThis->aCSR[13] & 0xff;
1019 padr[3] = pThis->aCSR[13] >> 8;
1020 padr[4] = pThis->aCSR[14] & 0xff;
1021 padr[5] = pThis->aCSR[14] >> 8;
1022 result = !CSR_DRCVPA(pThis) && !memcmp(hdr->ether_dhost, padr, 6);
1023#endif
1024
1025#ifdef PCNET_DEBUG_MATCH
1026 Log(("#%d packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, "
1027 "padr=%02x:%02x:%02x:%02x:%02x:%02x => %d\n", PCNET_INST_NR,
1028 hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2],
1029 hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5],
1030 padr[0],padr[1],padr[2],padr[3],padr[4],padr[5], result));
1031#endif
1032 RT_NOREF_PV(size);
1033 return result;
1034}
1035
1036DECLINLINE(int) padr_bcast(PPCNETSTATE pThis, const uint8_t *buf, size_t size)
1037{
1038 static uint8_t aBCAST[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1039 struct ether_header *hdr = (struct ether_header *)buf;
1040 int result = !CSR_DRCVBC(pThis) && !memcmp(hdr->ether_dhost, aBCAST, 6);
1041#ifdef PCNET_DEBUG_MATCH
1042 Log(("#%d padr_bcast result=%d\n", PCNET_INST_NR, result));
1043#endif
1044 RT_NOREF_PV(size);
1045 return result;
1046}
1047
1048static int ladr_match(PPCNETSTATE pThis, const uint8_t *buf, size_t size)
1049{
1050 struct ether_header *hdr = (struct ether_header *)buf;
1051 if (RT_UNLIKELY(hdr->ether_dhost[0] & 0x01) && ((uint64_t *)&pThis->aCSR[8])[0] != 0LL)
1052 {
1053 int index;
1054#if defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)
1055 index = lnc_mchash(hdr->ether_dhost) >> 26;
1056 return ((uint8_t*)(pThis->aCSR + 8))[index >> 3] & (1 << (index & 7));
1057#else
1058 uint8_t ladr[8];
1059 ladr[0] = pThis->aCSR[8] & 0xff;
1060 ladr[1] = pThis->aCSR[8] >> 8;
1061 ladr[2] = pThis->aCSR[9] & 0xff;
1062 ladr[3] = pThis->aCSR[9] >> 8;
1063 ladr[4] = pThis->aCSR[10] & 0xff;
1064 ladr[5] = pThis->aCSR[10] >> 8;
1065 ladr[6] = pThis->aCSR[11] & 0xff;
1066 ladr[7] = pThis->aCSR[11] >> 8;
1067 index = lnc_mchash(hdr->ether_dhost) >> 26;
1068 return (ladr[index >> 3] & (1 << (index & 7)));
1069#endif
1070 }
1071 RT_NOREF_PV(size);
1072 return 0;
1073}
1074
1075
1076/**
1077 * Get the receive descriptor ring address with a given index.
1078 */
1079DECLINLINE(RTGCPHYS32) pcnetRdraAddr(PPCNETSTATE pThis, int idx)
1080{
1081 return pThis->GCRDRA + ((CSR_RCVRL(pThis) - idx) << pThis->iLog2DescSize);
1082}
1083
1084/**
1085 * Get the transmit descriptor ring address with a given index.
1086 */
1087DECLINLINE(RTGCPHYS32) pcnetTdraAddr(PPCNETSTATE pThis, int idx)
1088{
1089 return pThis->GCTDRA + ((CSR_XMTRL(pThis) - idx) << pThis->iLog2DescSize);
1090}
1091
1092
1093#undef htonl
1094#define htonl(x) ASMByteSwapU32(x)
1095#undef htons
1096#define htons(x) ( (((x) & 0xff00) >> 8) | (((x) & 0x00ff) << 8) )
1097
1098static void pcnetPollRxTx(PPCNETSTATE pThis);
1099static void pcnetPollTimer(PPCNETSTATE pThis);
1100static void pcnetUpdateIrq(PPCNETSTATE pThis);
1101static uint32_t pcnetBCRReadU16(PPCNETSTATE pThis, uint32_t u32RAP);
1102static int pcnetBCRWriteU16(PPCNETSTATE pThis, uint32_t u32RAP, uint32_t val);
1103
1104
1105#ifdef PCNET_NO_POLLING
1106
1107# ifndef IN_RING3
1108/**
1109 * @callback_method_impl{FNPGMRZPHYSPFHANDLER,
1110 * \#PF write access handler for a PCNET ring.}
1111 *
1112 * @remarks The @a pvUser argument points to the PCNETSTATE.
1113 */
1114DECLEXPORT(int) pcnetHandleRingWritePf(PVM pVM, PVMCPU pVCpu, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame,
1115 RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
1116{
1117 PPCNETSTATE pThis = (PPCNETSTATE)pvUser;
1118
1119 Log(("#%d pcnetHandleRingWritePf: write to %#010x\n", PCNET_INST_NR, GCPhysFault));
1120
1121 uint32_t cb;
1122 int rc = pThis->CTX_SUFF(pfnEMInterpretInstruction)(pVM, pRegFrame, pvFault, &cb);
1123 if (RT_SUCCESS(rc) && cb)
1124 {
1125 if ( (GCPhysFault >= pThis->GCTDRA && GCPhysFault + cb < pcnetTdraAddr(pThis, 0))
1126# ifdef PCNET_MONITOR_RECEIVE_RING
1127 || (GCPhysFault >= pThis->GCRDRA && GCPhysFault + cb < pcnetRdraAddr(pThis, 0))
1128# endif
1129 )
1130 {
1131 uint32_t offsetTDRA = (GCPhysFault - pThis->GCTDRA);
1132
1133 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
1134 if (RT_SUCCESS(rc))
1135 {
1136 STAM_COUNTER_INC(&pThis->CTX_SUFF(StatRingWrite));
1137
1138 /* Check if we can do something now */
1139 pcnetPollRxTx(pThis);
1140 pcnetUpdateIrq(pThis);
1141
1142 PDMCritSectLeave(&pThis->CritSect);
1143 return VINF_SUCCESS;
1144 }
1145 }
1146 else
1147 {
1148 STAM_COUNTER_INC(&pThis->CTX_SUFF(StatRingWriteOutside));
1149 return VINF_SUCCESS; /* outside of the ring range */
1150 }
1151 }
1152 STAM_COUNTER_INC(&pThis->CTX_SUFF(StatRingWriteFailed)); ;
1153 return VINF_IOM_R3_MMIO_WRITE; /* handle in ring3 */
1154}
1155# endif /* !IN_RING3 */
1156
1157/**
1158 * @callback_method_impl{FNPGMPHYSHANDLER,
1159 * Write access handler for a PCNET ring.}
1160 */
1161PGM_ALL_CB_DECL(VBOXSTRICTRC)
1162pcnetHandleRingWrite(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys, void *pvPhys, void *pvBuf, size_t cbBuf,
1163 PGMACCESSTYPE enmAccessType, PGMACCESSORIGIN enmOrigin, void *pvUser)
1164{
1165 PPDMDEVINS pDevIns = (PPDMDEVINS)pvUser;
1166 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
1167
1168 Log(("#%d pcnetHandleRingWrite: write to %#010x\n", PCNET_INST_NR, GCPhys));
1169# ifdef VBOX_WITH_STATISTICS
1170 STAM_COUNTER_INC(&pThis->CTX_SUFF(StatRingWrite));
1171 if (GCPhys >= pThis->GCRDRA && GCPhys < pcnetRdraAddr(pThis, 0))
1172 STAM_COUNTER_INC(&pThis->StatRCVRingWrite);
1173 else if (GCPhys >= pThis->GCTDRA && GCPhys < pcnetTdraAddr(pThis, 0))
1174 STAM_COUNTER_INC(&pThis->StatTXRingWrite);
1175# endif
1176 /* Perform the actual write */
1177 memcpy((char *)pvPhys, pvBuf, cbBuf);
1178
1179 /* Writes done by our code don't require polling of course */
1180 if (PDMCritSectIsOwner(&pThis->CritSect) == false)
1181 {
1182 if ( (GCPhys >= pThis->GCTDRA && GCPhys + cbBuf < pcnetTdraAddr(pThis, 0))
1183# ifdef PCNET_MONITOR_RECEIVE_RING
1184 || (GCPhys >= pThis->GCRDRA && GCPhys + cbBuf < pcnetRdraAddr(pThis, 0))
1185# endif
1186 )
1187 {
1188 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
1189 AssertReleaseRC(rc);
1190 /* Check if we can do something now */
1191 pcnetPollRxTx(pThis);
1192 pcnetUpdateIrq(pThis);
1193 PDMCritSectLeave(&pThis->CritSect);
1194 }
1195 }
1196 return VINF_SUCCESS;
1197}
1198
1199#endif /* PCNET_NO_POLLING */
1200
1201static void pcnetSoftReset(PPCNETSTATE pThis)
1202{
1203 Log(("#%d pcnetSoftReset:\n", PCNET_INST_NR));
1204
1205 pThis->u32Lnkst = 0x40;
1206 pThis->GCRDRA = 0;
1207 pThis->GCTDRA = 0;
1208 pThis->u32RAP = 0;
1209
1210 pThis->aCSR[0] = 0x0004;
1211 pThis->aCSR[3] = 0x0000;
1212 pThis->aCSR[4] = 0x0115;
1213 pThis->aCSR[5] = 0x0000;
1214 pThis->aCSR[6] = 0x0000;
1215 pThis->aCSR[8] = 0;
1216 pThis->aCSR[9] = 0;
1217 pThis->aCSR[10] = 0;
1218 pThis->aCSR[11] = 0;
1219 pThis->aCSR[12] = RT_LE2H_U16(((uint16_t *)&pThis->aPROM[0])[0]);
1220 pThis->aCSR[13] = RT_LE2H_U16(((uint16_t *)&pThis->aPROM[0])[1]);
1221 pThis->aCSR[14] = RT_LE2H_U16(((uint16_t *)&pThis->aPROM[0])[2]);
1222 pThis->aCSR[15] &= 0x21c4;
1223 CSR_RCVRC(pThis) = 1;
1224 CSR_XMTRC(pThis) = 1;
1225 CSR_RCVRL(pThis) = 1;
1226 CSR_XMTRL(pThis) = 1;
1227 pThis->aCSR[80] = 0x1410;
1228 pThis->aCSR[88] = pThis->fAm79C973 ? CSR_VERSION_LOW_79C973 : CSR_VERSION_LOW_79C970A;
1229 pThis->aCSR[89] = CSR_VERSION_HIGH;
1230 pThis->aCSR[94] = 0x0000;
1231 pThis->aCSR[100] = 0x0200;
1232 pThis->aCSR[103] = 0x0105;
1233 CSR_MISSC(pThis) = 0;
1234 pThis->aCSR[114] = 0x0000;
1235 pThis->aCSR[122] = 0x0000;
1236 pThis->aCSR[124] = 0x0000;
1237}
1238
1239/**
1240 * Check if we have to send an interrupt to the guest. An interrupt can occur on
1241 * - csr0 (written quite often)
1242 * - csr4 (only written by pcnetSoftReset(), pcnetStop() or by the guest driver)
1243 * - csr5 (only written by pcnetSoftReset(), pcnetStop or by the driver guest)
1244 */
1245static void pcnetUpdateIrq(PPCNETSTATE pThis)
1246{
1247 register int iISR = 0;
1248 register uint16_t csr0 = pThis->aCSR[0];
1249
1250 csr0 &= ~0x0080; /* clear INTR */
1251
1252 STAM_PROFILE_ADV_START(&pThis->StatInterrupt, a);
1253
1254 /* Linux guests set csr4=0x0915
1255 * W2k guests set csr3=0x4940 (disable BABL, MERR, IDON, DXSUFLO */
1256
1257#if 1
1258 if ( ( (csr0 & ~pThis->aCSR[3]) & 0x5f00)
1259 || (((pThis->aCSR[4]>>1) & ~pThis->aCSR[4]) & 0x0115)
1260 || (((pThis->aCSR[5]>>1) & pThis->aCSR[5]) & 0x0048))
1261#else
1262 if ( ( !(pThis->aCSR[3] & 0x4000) && !!(csr0 & 0x4000)) /* BABL */
1263 ||( !(pThis->aCSR[3] & 0x1000) && !!(csr0 & 0x1000)) /* MISS */
1264 ||( !(pThis->aCSR[3] & 0x0100) && !!(csr0 & 0x0100)) /* IDON */
1265 ||( !(pThis->aCSR[3] & 0x0200) && !!(csr0 & 0x0200)) /* TINT */
1266 ||( !(pThis->aCSR[3] & 0x0400) && !!(csr0 & 0x0400)) /* RINT */
1267 ||( !(pThis->aCSR[3] & 0x0800) && !!(csr0 & 0x0800)) /* MERR */
1268 ||( !(pThis->aCSR[4] & 0x0001) && !!(pThis->aCSR[4] & 0x0002)) /* JAB */
1269 ||( !(pThis->aCSR[4] & 0x0004) && !!(pThis->aCSR[4] & 0x0008)) /* TXSTRT */
1270 ||( !(pThis->aCSR[4] & 0x0010) && !!(pThis->aCSR[4] & 0x0020)) /* RCVO */
1271 ||( !(pThis->aCSR[4] & 0x0100) && !!(pThis->aCSR[4] & 0x0200)) /* MFCO */
1272 ||(!!(pThis->aCSR[5] & 0x0040) && !!(pThis->aCSR[5] & 0x0080)) /* EXDINT */
1273 ||(!!(pThis->aCSR[5] & 0x0008) && !!(pThis->aCSR[5] & 0x0010)) /* MPINT */)
1274#endif
1275 {
1276 iISR = !!(csr0 & 0x0040); /* CSR_INEA */
1277 csr0 |= 0x0080; /* set INTR */
1278 }
1279
1280#ifdef VBOX
1281 if (pThis->aCSR[4] & 0x0080) /* UINTCMD */
1282 {
1283 pThis->aCSR[4] &= ~0x0080; /* clear UINTCMD */
1284 pThis->aCSR[4] |= 0x0040; /* set UINT */
1285 Log(("#%d user int\n", PCNET_INST_NR));
1286 }
1287 if (pThis->aCSR[4] & csr0 & 0x0040 /* CSR_INEA */)
1288 {
1289 csr0 |= 0x0080; /* set INTR */
1290 iISR = 1;
1291 }
1292#else /* !VBOX */
1293 if (!!(pThis->aCSR[4] & 0x0080) && CSR_INEA(pThis)) /* UINTCMD */
1294 {
1295 pThis->aCSR[4] &= ~0x0080;
1296 pThis->aCSR[4] |= 0x0040; /* set UINT */
1297 csr0 |= 0x0080; /* set INTR */
1298 iISR = 1;
1299 Log(("#%d user int\n", PCNET_INST_NR));
1300 }
1301#endif /* !VBOX */
1302
1303#if 1
1304 if (((pThis->aCSR[5]>>1) & pThis->aCSR[5]) & 0x0500)
1305#else
1306 if ( (!!(pThis->aCSR[5] & 0x0400) && !!(pThis->aCSR[5] & 0x0800)) /* SINT */
1307 ||(!!(pThis->aCSR[5] & 0x0100) && !!(pThis->aCSR[5] & 0x0200)) /* SLPINT */)
1308#endif
1309 {
1310 iISR = 1;
1311 csr0 |= 0x0080; /* INTR */
1312 }
1313
1314 if ((pThis->aCSR[7] & 0x0C00) == 0x0C00) /* STINT + STINTE */
1315 iISR = 1;
1316
1317 pThis->aCSR[0] = csr0;
1318
1319 Log2(("#%d set irq iISR=%d\n", PCNET_INST_NR, iISR));
1320
1321 /* normal path is to _not_ change the IRQ status */
1322 if (RT_UNLIKELY(iISR != pThis->iISR))
1323 {
1324 Log(("#%d INTA=%d\n", PCNET_INST_NR, iISR));
1325 PDMDevHlpPCISetIrq(PCNETSTATE_2_DEVINS(pThis), 0, iISR);
1326 pThis->iISR = iISR;
1327 }
1328 STAM_PROFILE_ADV_STOP(&pThis->StatInterrupt, a);
1329}
1330
1331#ifdef IN_RING3
1332#ifdef PCNET_NO_POLLING
1333static void pcnetUpdateRingHandlers(PPCNETSTATE pThis)
1334{
1335 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
1336 int rc;
1337
1338 Log(("pcnetUpdateRingHandlers TD %RX32 size %#x -> %RX32 ?size? %#x\n", pThis->TDRAPhysOld, pThis->cbTDRAOld, pThis->GCTDRA, pcnetTdraAddr(pThis, 0)));
1339 Log(("pcnetUpdateRingHandlers RX %RX32 size %#x -> %RX32 ?size? %#x\n", pThis->RDRAPhysOld, pThis->cbRDRAOld, pThis->GCRDRA, pcnetRdraAddr(pThis, 0)));
1340
1341 /** @todo unregister order not correct! */
1342
1343#ifdef PCNET_MONITOR_RECEIVE_RING
1344 if (pThis->GCRDRA != pThis->RDRAPhysOld || CSR_RCVRL(pThis) != pThis->cbRDRAOld)
1345 {
1346 if (pThis->RDRAPhysOld != 0)
1347 PGMHandlerPhysicalDeregister(PDMDevHlpGetVM(pDevIns),
1348 pThis->RDRAPhysOld & ~PAGE_OFFSET_MASK);
1349
1350 rc = PGMHandlerPhysicalRegister(PDMDevHlpGetVM(pDevIns),
1351 pThis->GCRDRA & ~PAGE_OFFSET_MASK,
1352 RT_ALIGN(pcnetRdraAddr(pThis, 0), PAGE_SIZE) - 1,
1353 pThis->hNoPollingHandlerType, pDevIns,
1354 pThis->pDevInsHC->pvInstanceDataHC,
1355 pThis->pDevInsHC->pvInstanceDataRC,
1356 "PCNet receive ring write access handler");
1357 AssertRC(rc);
1358
1359 pThis->RDRAPhysOld = pThis->GCRDRA;
1360 pThis->cbRDRAOld = pcnetRdraAddr(pThis, 0);
1361 }
1362#endif /* PCNET_MONITOR_RECEIVE_RING */
1363
1364#ifdef PCNET_MONITOR_RECEIVE_RING
1365 /* 3 possibilities:
1366 * 1) TDRA on different physical page as RDRA
1367 * 2) TDRA completely on same physical page as RDRA
1368 * 3) TDRA & RDRA overlap partly with different physical pages
1369 */
1370 RTGCPHYS32 RDRAPageStart = pThis->GCRDRA & ~PAGE_OFFSET_MASK;
1371 RTGCPHYS32 RDRAPageEnd = (pcnetRdraAddr(pThis, 0) - 1) & ~PAGE_OFFSET_MASK;
1372 RTGCPHYS32 TDRAPageStart = pThis->GCTDRA & ~PAGE_OFFSET_MASK;
1373 RTGCPHYS32 TDRAPageEnd = (pcnetTdraAddr(pThis, 0) - 1) & ~PAGE_OFFSET_MASK;
1374
1375 if ( RDRAPageStart > TDRAPageEnd
1376 || TDRAPageStart > RDRAPageEnd)
1377 {
1378#endif /* PCNET_MONITOR_RECEIVE_RING */
1379 /* 1) */
1380 if (pThis->GCTDRA != pThis->TDRAPhysOld || CSR_XMTRL(pThis) != pThis->cbTDRAOld)
1381 {
1382 if (pThis->TDRAPhysOld != 0)
1383 PGMHandlerPhysicalDeregister(PDMDevHlpGetVM(pDevIns),
1384 pThis->TDRAPhysOld & ~PAGE_OFFSET_MASK);
1385
1386 rc = PGMHandlerPhysicalRegister(PDMDevHlpGetVM(pDevIns),
1387 pThis->GCTDRA & ~PAGE_OFFSET_MASK,
1388 RT_ALIGN(pcnetTdraAddr(pThis, 0), PAGE_SIZE) - 1,
1389 pThis->hNoPollingHandlerType,
1390 pThis->CTX_SUFF(pDevIns)->pvInstanceDataR3,
1391 pThis->CTX_SUFF(pDevIns)->pvInstanceDataR0,
1392 pThis->CTX_SUFF(pDevIns)->pvInstanceDataRC,
1393 "PCNet transmit ring write access handler");
1394 AssertRC(rc);
1395
1396 pThis->TDRAPhysOld = pThis->GCTDRA;
1397 pThis->cbTDRAOld = pcnetTdraAddr(pThis, 0);
1398 }
1399#ifdef PCNET_MONITOR_RECEIVE_RING
1400 }
1401 else
1402 if ( RDRAPageStart != TDRAPageStart
1403 && ( TDRAPageStart == RDRAPageEnd
1404 || TDRAPageEnd == RDRAPageStart
1405 )
1406 )
1407 {
1408 /* 3) */
1409 AssertFailed();
1410 }
1411 /* else 2) */
1412#endif
1413}
1414#endif /* PCNET_NO_POLLING */
1415
1416static void pcnetInit(PPCNETSTATE pThis)
1417{
1418 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
1419 Log(("#%d pcnetInit: init_addr=%#010x\n", PCNET_INST_NR, PHYSADDR(pThis, CSR_IADR(pThis))));
1420
1421 /** @todo Documentation says that RCVRL and XMTRL are stored as two's complement!
1422 * Software is allowed to write these registers directly. */
1423#define PCNET_INIT() do { \
1424 PDMDevHlpPhysRead(pDevIns, PHYSADDR(pThis, CSR_IADR(pThis)), \
1425 (uint8_t *)&initblk, sizeof(initblk)); \
1426 pThis->aCSR[15] = RT_LE2H_U16(initblk.mode); \
1427 CSR_RCVRL(pThis) = (initblk.rlen < 9) ? (1 << initblk.rlen) : 512; \
1428 CSR_XMTRL(pThis) = (initblk.tlen < 9) ? (1 << initblk.tlen) : 512; \
1429 pThis->aCSR[ 6] = (initblk.tlen << 12) | (initblk.rlen << 8); \
1430 pThis->aCSR[ 8] = RT_LE2H_U16(initblk.ladrf1); \
1431 pThis->aCSR[ 9] = RT_LE2H_U16(initblk.ladrf2); \
1432 pThis->aCSR[10] = RT_LE2H_U16(initblk.ladrf3); \
1433 pThis->aCSR[11] = RT_LE2H_U16(initblk.ladrf4); \
1434 pThis->aCSR[12] = RT_LE2H_U16(initblk.padr1); \
1435 pThis->aCSR[13] = RT_LE2H_U16(initblk.padr2); \
1436 pThis->aCSR[14] = RT_LE2H_U16(initblk.padr3); \
1437 pThis->GCRDRA = PHYSADDR(pThis, initblk.rdra); \
1438 pThis->GCTDRA = PHYSADDR(pThis, initblk.tdra); \
1439} while (0)
1440
1441 if (BCR_SSIZE32(pThis))
1442 {
1443 struct INITBLK32 initblk;
1444 pThis->GCUpperPhys = 0;
1445 PCNET_INIT();
1446 Log(("#%d initblk.rlen=%#04x, initblk.tlen=%#04x\n",
1447 PCNET_INST_NR, initblk.rlen, initblk.tlen));
1448 }
1449 else
1450 {
1451 struct INITBLK16 initblk;
1452 pThis->GCUpperPhys = (0xff00 & (uint32_t)pThis->aCSR[2]) << 16;
1453 PCNET_INIT();
1454 Log(("#%d initblk.rlen=%#04x, initblk.tlen=%#04x\n",
1455 PCNET_INST_NR, initblk.rlen, initblk.tlen));
1456 }
1457
1458#undef PCNET_INIT
1459
1460 size_t cbRxBuffers = 0;
1461 for (int i = CSR_RCVRL(pThis); i >= 1; i--)
1462 {
1463 RMD rmd;
1464 RTGCPHYS32 rdaddr = PHYSADDR(pThis, pcnetRdraAddr(pThis, i));
1465
1466 pcnetDescTouch(pThis, rdaddr);
1467 /* At this time it is not guaranteed that the buffers are already initialized. */
1468 if (pcnetRmdLoad(pThis, &rmd, rdaddr, false))
1469 {
1470 uint32_t cbBuf = 4096U-rmd.rmd1.bcnt;
1471 cbRxBuffers += cbBuf;
1472 }
1473 }
1474
1475 for (int i = CSR_XMTRL(pThis); i >= 1; i--)
1476 {
1477 RTGCPHYS32 tdaddr = PHYSADDR(pThis, pcnetTdraAddr(pThis, i));
1478
1479 pcnetDescTouch(pThis, tdaddr);
1480 }
1481
1482 /*
1483 * Heuristics: The Solaris pcn driver allocates too few RX buffers (128 buffers of a
1484 * size of 128 bytes are 16KB in summary) leading to frequent RX buffer overflows. In
1485 * that case we don't signal RX overflows through the CSR0_MISS flag as the driver
1486 * re-initializes the device on every miss. Other guests use at least 32 buffers of
1487 * usually 1536 bytes and should therefore not run into condition. If they are still
1488 * short in RX buffers we notify this condition.
1489 */
1490 pThis->fSignalRxMiss = (cbRxBuffers == 0 || cbRxBuffers >= 32*_1K);
1491
1492 if (pThis->pDrvR3)
1493 pThis->pDrvR3->pfnSetPromiscuousMode(pThis->pDrvR3, CSR_PROM(pThis));
1494
1495 CSR_RCVRC(pThis) = CSR_RCVRL(pThis);
1496 CSR_XMTRC(pThis) = CSR_XMTRL(pThis);
1497
1498#ifdef PCNET_NO_POLLING
1499 pcnetUpdateRingHandlers(pThis);
1500#endif
1501
1502 /* Reset cached RX and TX states */
1503 CSR_CRST(pThis) = CSR_CRBC(pThis) = CSR_NRST(pThis) = CSR_NRBC(pThis) = 0;
1504 CSR_CXST(pThis) = CSR_CXBC(pThis) = CSR_NXST(pThis) = CSR_NXBC(pThis) = 0;
1505
1506 LogRel(("PCNet#%d: Init: ss32=%d GCRDRA=%#010x[%d] GCTDRA=%#010x[%d]%s\n",
1507 PCNET_INST_NR, BCR_SSIZE32(pThis),
1508 pThis->GCRDRA, CSR_RCVRL(pThis), pThis->GCTDRA, CSR_XMTRL(pThis),
1509 !pThis->fSignalRxMiss ? " (CSR0_MISS disabled)" : ""));
1510
1511 pThis->aCSR[0] |= 0x0101; /* Initialization done */
1512 pThis->aCSR[0] &= ~0x0004; /* clear STOP bit */
1513}
1514#endif /* IN_RING3 */
1515
1516/**
1517 * Start RX/TX operation.
1518 */
1519static void pcnetStart(PPCNETSTATE pThis)
1520{
1521 Log(("#%d pcnetStart:\n", PCNET_INST_NR));
1522 if (!CSR_DTX(pThis))
1523 pThis->aCSR[0] |= 0x0010; /* set TXON */
1524 if (!CSR_DRX(pThis))
1525 pThis->aCSR[0] |= 0x0020; /* set RXON */
1526 pThis->aCSR[0] &= ~0x0004; /* clear STOP bit */
1527 pThis->aCSR[0] |= 0x0002; /* STRT */
1528#ifndef PCNET_NO_POLLING
1529 pcnetPollTimerStart(pThis); /* start timer if it was stopped */
1530#endif
1531}
1532
1533/**
1534 * Stop RX/TX operation.
1535 */
1536static void pcnetStop(PPCNETSTATE pThis)
1537{
1538 Log(("#%d pcnetStop:\n", PCNET_INST_NR));
1539 pThis->aCSR[0] = 0x0004;
1540 pThis->aCSR[4] &= ~0x02c2;
1541 pThis->aCSR[5] &= ~0x0011;
1542 pcnetPollTimer(pThis);
1543}
1544
1545#ifdef IN_RING3
1546
1547static DECLCALLBACK(void) pcnetWakeupReceive(PPDMDEVINS pDevIns)
1548{
1549 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
1550 STAM_COUNTER_INC(&pThis->StatRxOverflowWakeup);
1551 if (pThis->hEventOutOfRxSpace != NIL_RTSEMEVENT)
1552 RTSemEventSignal(pThis->hEventOutOfRxSpace);
1553}
1554
1555static DECLCALLBACK(bool) pcnetCanRxQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
1556{
1557 RT_NOREF(pItem);
1558 pcnetWakeupReceive(pDevIns);
1559 return true;
1560}
1561
1562#endif /* IN_RING3 */
1563
1564
1565/**
1566 * Poll Receive Descriptor Table Entry and cache the results in the appropriate registers.
1567 * Note: Once a descriptor belongs to the network card (this driver), it cannot be changed
1568 * by the host (the guest driver) anymore. Well, it could but the results are undefined by
1569 * definition.
1570 * @param fSkipCurrent if true, don't scan the current RDTE.
1571 */
1572static void pcnetRdtePoll(PPCNETSTATE pThis, bool fSkipCurrent=false)
1573{
1574 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1575 /* assume lack of a next receive descriptor */
1576 CSR_NRST(pThis) = 0;
1577
1578 if (RT_LIKELY(pThis->GCRDRA))
1579 {
1580 /*
1581 * The current receive message descriptor.
1582 */
1583 RMD rmd;
1584 int i = CSR_RCVRC(pThis);
1585 RTGCPHYS32 addr;
1586
1587 if (i < 1)
1588 i = CSR_RCVRL(pThis);
1589
1590 if (!fSkipCurrent)
1591 {
1592 addr = pcnetRdraAddr(pThis, i);
1593 CSR_CRDA(pThis) = CSR_CRBA(pThis) = 0;
1594 CSR_CRBC(pThis) = CSR_CRST(pThis) = 0;
1595 if (!pcnetRmdLoad(pThis, &rmd, PHYSADDR(pThis, addr), true))
1596 {
1597 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1598 return;
1599 }
1600 if (RT_LIKELY(!IS_RMD_BAD(rmd)))
1601 {
1602 CSR_CRDA(pThis) = addr; /* Receive Descriptor Address */
1603 CSR_CRBA(pThis) = rmd.rmd0.rbadr; /* Receive Buffer Address */
1604 CSR_CRBC(pThis) = rmd.rmd1.bcnt; /* Receive Byte Count */
1605 CSR_CRST(pThis) = ((uint32_t *)&rmd)[1] >> 16; /* Receive Status */
1606 if (pThis->fMaybeOutOfSpace)
1607 {
1608#ifdef IN_RING3
1609 pcnetWakeupReceive(PCNETSTATE_2_DEVINS(pThis));
1610#else
1611 PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pThis->CTX_SUFF(pCanRxQueue));
1612 if (pItem)
1613 PDMQueueInsert(pThis->CTX_SUFF(pCanRxQueue), pItem);
1614#endif
1615 }
1616 }
1617 else
1618 {
1619 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1620 /* This is not problematic since we don't own the descriptor
1621 * We actually do own it, otherwise pcnetRmdLoad would have returned false.
1622 * Don't flood the release log with errors.
1623 */
1624 if (++pThis->uCntBadRMD < 50)
1625 LogRel(("PCNet#%d: BAD RMD ENTRIES AT %#010x (i=%d)\n",
1626 PCNET_INST_NR, addr, i));
1627 return;
1628 }
1629 }
1630
1631 /*
1632 * The next descriptor.
1633 */
1634 if (--i < 1)
1635 i = CSR_RCVRL(pThis);
1636 addr = pcnetRdraAddr(pThis, i);
1637 CSR_NRDA(pThis) = CSR_NRBA(pThis) = 0;
1638 CSR_NRBC(pThis) = 0;
1639 if (!pcnetRmdLoad(pThis, &rmd, PHYSADDR(pThis, addr), true))
1640 {
1641 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1642 return;
1643 }
1644 if (RT_LIKELY(!IS_RMD_BAD(rmd)))
1645 {
1646 CSR_NRDA(pThis) = addr; /* Receive Descriptor Address */
1647 CSR_NRBA(pThis) = rmd.rmd0.rbadr; /* Receive Buffer Address */
1648 CSR_NRBC(pThis) = rmd.rmd1.bcnt; /* Receive Byte Count */
1649 CSR_NRST(pThis) = ((uint32_t *)&rmd)[1] >> 16; /* Receive Status */
1650 }
1651 else
1652 {
1653 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1654 /* This is not problematic since we don't own the descriptor
1655 * We actually do own it, otherwise pcnetRmdLoad would have returned false.
1656 * Don't flood the release log with errors.
1657 */
1658 if (++pThis->uCntBadRMD < 50)
1659 LogRel(("PCNet#%d: BAD RMD ENTRIES + AT %#010x (i=%d)\n",
1660 PCNET_INST_NR, addr, i));
1661 return;
1662 }
1663
1664 /**
1665 * @todo NNRD
1666 */
1667 }
1668 else
1669 {
1670 CSR_CRDA(pThis) = CSR_CRBA(pThis) = CSR_NRDA(pThis) = CSR_NRBA(pThis) = 0;
1671 CSR_CRBC(pThis) = CSR_NRBC(pThis) = CSR_CRST(pThis) = 0;
1672 }
1673 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatRdtePoll), a);
1674}
1675
1676/**
1677 * Poll Transmit Descriptor Table Entry
1678 * @return true if transmit descriptors available
1679 */
1680static int pcnetTdtePoll(PPCNETSTATE pThis, TMD *tmd)
1681{
1682 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatTdtePoll), a);
1683 if (RT_LIKELY(pThis->GCTDRA))
1684 {
1685 RTGCPHYS32 cxda = pcnetTdraAddr(pThis, CSR_XMTRC(pThis));
1686
1687 if (!pcnetTmdLoad(pThis, tmd, PHYSADDR(pThis, cxda), true))
1688 {
1689 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTdtePoll), a);
1690 return 0;
1691 }
1692
1693 if (RT_UNLIKELY(tmd->tmd1.ones != 15))
1694 {
1695 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTdtePoll), a);
1696 LogRel(("PCNet#%d: BAD TMD XDA=%#010x\n",
1697 PCNET_INST_NR, PHYSADDR(pThis, cxda)));
1698 return 0;
1699 }
1700
1701 /* previous xmit descriptor */
1702 CSR_PXDA(pThis) = CSR_CXDA(pThis);
1703 CSR_PXBC(pThis) = CSR_CXBC(pThis);
1704 CSR_PXST(pThis) = CSR_CXST(pThis);
1705
1706 /* set current transmit descriptor. */
1707 CSR_CXDA(pThis) = cxda;
1708 CSR_CXBC(pThis) = tmd->tmd1.bcnt;
1709 CSR_CXST(pThis) = ((uint32_t *)tmd)[1] >> 16;
1710 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTdtePoll), a);
1711 return CARD_IS_OWNER(CSR_CXST(pThis));
1712 }
1713 else
1714 {
1715 /** @todo consistency with previous receive descriptor */
1716 CSR_CXDA(pThis) = 0;
1717 CSR_CXBC(pThis) = CSR_CXST(pThis) = 0;
1718 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTdtePoll), a);
1719 return 0;
1720 }
1721}
1722
1723
1724/**
1725 * Poll Transmit Descriptor Table Entry
1726 * @return true if transmit descriptors available
1727 */
1728static int pcnetCalcPacketLen(PPCNETSTATE pThis, unsigned cb)
1729{
1730 TMD tmd;
1731 unsigned cbPacket = cb;
1732 uint32_t iDesc = CSR_XMTRC(pThis);
1733
1734 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatTxLenCalc), a);
1735 do
1736 {
1737 /* Advance the ring counter */
1738 if (iDesc < 2)
1739 iDesc = CSR_XMTRL(pThis);
1740 else
1741 iDesc--;
1742
1743 RTGCPHYS32 addrDesc = pcnetTdraAddr(pThis, iDesc);
1744
1745 if (!pcnetTmdLoad(pThis, &tmd, PHYSADDR(pThis, addrDesc), true))
1746 {
1747 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTxLenCalc), a);
1748 /*
1749 * No need to count further since this packet won't be sent anyway
1750 * due to underflow.
1751 */
1752 Log3(("#%d pcnetCalcPacketLen: underflow, return %u\n", PCNET_INST_NR, cbPacket));
1753 return cbPacket;
1754 }
1755 if (RT_UNLIKELY(tmd.tmd1.ones != 15))
1756 {
1757 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTxLenCalc), a);
1758 LogRel(("PCNet#%d: BAD TMD XDA=%#010x\n",
1759 PCNET_INST_NR, PHYSADDR(pThis, addrDesc)));
1760 Log3(("#%d pcnetCalcPacketLen: bad TMD, return %u\n", PCNET_INST_NR, cbPacket));
1761 return cbPacket;
1762 }
1763 Log3(("#%d pcnetCalcPacketLen: got valid TMD, cb=%u\n", PCNET_INST_NR, 4096 - tmd.tmd1.bcnt));
1764 cbPacket += 4096 - tmd.tmd1.bcnt;
1765 } while (!tmd.tmd1.enp);
1766 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTxLenCalc), a);
1767
1768 Log3(("#%d pcnetCalcPacketLen: return %u\n", PCNET_INST_NR, cbPacket));
1769 return cbPacket;
1770}
1771
1772
1773/**
1774 * Write data into guest receive buffers.
1775 */
1776static void pcnetReceiveNoSync(PPCNETSTATE pThis, const uint8_t *buf, size_t cbToRecv, bool fAddFCS)
1777{
1778 PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pThis);
1779 int is_padr = 0, is_bcast = 0, is_ladr = 0;
1780 unsigned iRxDesc;
1781 int cbPacket;
1782
1783 if (RT_UNLIKELY(CSR_DRX(pThis) || CSR_STOP(pThis) || CSR_SPND(pThis) || !cbToRecv))
1784 return;
1785
1786 /*
1787 * Drop packets if the VM is not running yet/anymore.
1788 */
1789 VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
1790 if ( enmVMState != VMSTATE_RUNNING
1791 && enmVMState != VMSTATE_RUNNING_LS)
1792 return;
1793
1794 /*
1795 * Drop packets if the cable is not connected
1796 */
1797 if (!pcnetIsLinkUp(pThis))
1798 return;
1799
1800 Log(("#%d pcnetReceiveNoSync: size=%d\n", PCNET_INST_NR, cbToRecv));
1801
1802 /*
1803 * Perform address matching.
1804 */
1805 if ( CSR_PROM(pThis)
1806 || (is_padr = padr_match(pThis, buf, cbToRecv))
1807 || (is_bcast = padr_bcast(pThis, buf, cbToRecv))
1808 || (is_ladr = ladr_match(pThis, buf, cbToRecv)))
1809 {
1810 if (HOST_IS_OWNER(CSR_CRST(pThis)))
1811 pcnetRdtePoll(pThis);
1812 if (RT_UNLIKELY(HOST_IS_OWNER(CSR_CRST(pThis))))
1813 {
1814 /* Not owned by controller. This should not be possible as
1815 * we already called pcnetCanReceive(). */
1816 LogRel(("PCNet#%d: no buffer: RCVRC=%d\n", PCNET_INST_NR, CSR_RCVRC(pThis)));
1817 /* Dump the status of all RX descriptors */
1818 const unsigned cb = 1 << pThis->iLog2DescSize;
1819 RTGCPHYS32 GCPhys = pThis->GCRDRA;
1820 iRxDesc = CSR_RCVRL(pThis);
1821 while (iRxDesc-- > 0)
1822 {
1823 RMD rmd;
1824 pcnetRmdLoad(pThis, &rmd, PHYSADDR(pThis, GCPhys), false);
1825 LogRel((" %#010x\n", rmd.rmd1));
1826 GCPhys += cb;
1827 }
1828 pThis->aCSR[0] |= 0x1000; /* Set MISS flag */
1829 CSR_MISSC(pThis)++;
1830 }
1831 else
1832 {
1833 PCRTNETETHERHDR pEth = (PCRTNETETHERHDR)buf;
1834 bool fStrip = false;
1835 size_t len_802_3;
1836 uint8_t *src = &pThis->abRecvBuf[8];
1837 RTGCPHYS32 crda = CSR_CRDA(pThis);
1838 RTGCPHYS32 next_crda;
1839 RMD rmd, next_rmd;
1840
1841 /*
1842 * Ethernet framing considers these two octets to be
1843 * payload type; 802.3 framing considers them to be
1844 * payload length. IEEE 802.3x-1997 restricts Ethernet
1845 * type to be greater than or equal to 1536 (0x0600), so
1846 * that both framings can coexist on the wire.
1847 *
1848 * NB: CSR_ASTRP_RCV bit affects only 802.3 frames!
1849 */
1850 len_802_3 = RT_BE2H_U16(pEth->EtherType);
1851 if (len_802_3 < 46 && CSR_ASTRP_RCV(pThis))
1852 {
1853 cbToRecv = RT_MIN(sizeof(RTNETETHERHDR) + len_802_3, cbToRecv);
1854 fStrip = true;
1855 fAddFCS = false;
1856 }
1857
1858 memcpy(src, buf, cbToRecv);
1859
1860 if (!fStrip) {
1861 while (cbToRecv < 60)
1862 src[cbToRecv++] = 0;
1863
1864 if (fAddFCS)
1865 {
1866 uint32_t fcs = UINT32_MAX;
1867 uint8_t *p = src;
1868
1869 while (p != &src[cbToRecv])
1870 CRC(fcs, *p++);
1871
1872 /* FCS at the end of the packet */
1873 ((uint32_t *)&src[cbToRecv])[0] = htonl(fcs);
1874 cbToRecv += 4;
1875 }
1876 }
1877
1878 cbPacket = (int)cbToRecv; Assert((size_t)cbPacket == cbToRecv);
1879
1880#ifdef PCNET_DEBUG_MATCH
1881 PRINT_PKTHDR(buf);
1882#endif
1883
1884 pcnetRmdLoad(pThis, &rmd, PHYSADDR(pThis, crda), false);
1885 /*if (!CSR_LAPPEN(pThis))*/
1886 rmd.rmd1.stp = 1;
1887
1888 size_t cbBuf = RT_MIN(4096 - (size_t)rmd.rmd1.bcnt, cbToRecv);
1889 RTGCPHYS32 rbadr = PHYSADDR(pThis, rmd.rmd0.rbadr);
1890
1891 /* save the old value to check if it was changed as long as we didn't
1892 * hold the critical section */
1893 iRxDesc = CSR_RCVRC(pThis);
1894
1895 /* We have to leave the critical section here or we risk deadlocking
1896 * with EMT when the write is to an unallocated page or has an access
1897 * handler associated with it.
1898 *
1899 * This shouldn't be a problem because:
1900 * - any modification to the RX descriptor by the driver is
1901 * forbidden as long as it is owned by the device
1902 * - we don't cache any register state beyond this point
1903 */
1904 PDMCritSectLeave(&pThis->CritSect);
1905 PDMDevHlpPCIPhysWrite(pDevIns, rbadr, src, cbBuf);
1906 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
1907 AssertReleaseRC(rc);
1908
1909 /* RX disabled in the meantime? If so, abort RX. */
1910 if (RT_UNLIKELY(CSR_DRX(pThis) || CSR_STOP(pThis) || CSR_SPND(pThis)))
1911 return;
1912
1913 /* Was the register modified in the meantime? If so, don't touch the
1914 * register but still update the RX descriptor. */
1915 if (RT_LIKELY(iRxDesc == CSR_RCVRC(pThis)))
1916 {
1917 if (iRxDesc-- < 2)
1918 iRxDesc = CSR_RCVRL(pThis);
1919 CSR_RCVRC(pThis) = iRxDesc;
1920 }
1921 else
1922 iRxDesc = CSR_RCVRC(pThis);
1923
1924 src += cbBuf;
1925 cbToRecv -= cbBuf;
1926
1927 while (cbToRecv > 0)
1928 {
1929 /* Read the entire next descriptor as we're likely to need it. */
1930 next_crda = pcnetRdraAddr(pThis, iRxDesc);
1931
1932 /* Check next descriptor's own bit. If we don't own it, we have
1933 * to quit and write error status into the last descriptor we own.
1934 */
1935 if (!pcnetRmdLoad(pThis, &next_rmd, PHYSADDR(pThis, next_crda), true))
1936 break;
1937
1938 /* Write back current descriptor, clear the own bit. */
1939 pcnetRmdStorePassHost(pThis, &rmd, PHYSADDR(pThis, crda));
1940
1941 /* Switch to the next descriptor */
1942 crda = next_crda;
1943 rmd = next_rmd;
1944
1945 cbBuf = RT_MIN(4096 - (size_t)rmd.rmd1.bcnt, cbToRecv);
1946 RTGCPHYS32 rbadr2 = PHYSADDR(pThis, rmd.rmd0.rbadr);
1947
1948 /* We have to leave the critical section here or we risk deadlocking
1949 * with EMT when the write is to an unallocated page or has an access
1950 * handler associated with it. See above for additional comments. */
1951 PDMCritSectLeave(&pThis->CritSect);
1952 PDMDevHlpPCIPhysWrite(pDevIns, rbadr2, src, cbBuf);
1953 rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
1954 AssertReleaseRC(rc);
1955
1956 /* RX disabled in the meantime? If so, abort RX. */
1957 if (RT_UNLIKELY(CSR_DRX(pThis) || CSR_STOP(pThis) || CSR_SPND(pThis)))
1958 return;
1959
1960 /* Was the register modified in the meantime? If so, don't touch the
1961 * register but still update the RX descriptor. */
1962 if (RT_LIKELY(iRxDesc == CSR_RCVRC(pThis)))
1963 {
1964 if (iRxDesc-- < 2)
1965 iRxDesc = CSR_RCVRL(pThis);
1966 CSR_RCVRC(pThis) = iRxDesc;
1967 }
1968 else
1969 iRxDesc = CSR_RCVRC(pThis);
1970
1971 src += cbBuf;
1972 cbToRecv -= cbBuf;
1973 }
1974
1975 if (RT_LIKELY(cbToRecv == 0))
1976 {
1977 rmd.rmd1.enp = 1;
1978 rmd.rmd1.pam = !CSR_PROM(pThis) && is_padr;
1979 rmd.rmd1.lafm = !CSR_PROM(pThis) && is_ladr;
1980 rmd.rmd1.bam = !CSR_PROM(pThis) && is_bcast;
1981 rmd.rmd2.mcnt = cbPacket;
1982
1983 STAM_REL_COUNTER_ADD(&pThis->StatReceiveBytes, cbPacket);
1984 }
1985 else
1986 {
1987 Log(("#%d: Overflow by %ubytes\n", PCNET_INST_NR, cbToRecv));
1988 rmd.rmd1.oflo = 1;
1989 rmd.rmd1.buff = 1;
1990 rmd.rmd1.err = 1;
1991 }
1992
1993 /* write back, clear the own bit */
1994 pcnetRmdStorePassHost(pThis, &rmd, PHYSADDR(pThis, crda));
1995
1996 pThis->aCSR[0] |= 0x0400;
1997
1998 Log(("#%d RCVRC=%d CRDA=%#010x\n", PCNET_INST_NR,
1999 CSR_RCVRC(pThis), PHYSADDR(pThis, CSR_CRDA(pThis))));
2000#ifdef PCNET_DEBUG_RMD
2001 PRINT_RMD(&rmd);
2002#endif
2003
2004 /* guest driver is owner: force repoll of current and next RDTEs */
2005 CSR_CRST(pThis) = 0;
2006 }
2007 }
2008
2009 /* see description of TXDPOLL:
2010 * ``transmit polling will take place following receive activities'' */
2011 pcnetPollRxTx(pThis);
2012 pcnetUpdateIrq(pThis);
2013}
2014
2015
2016#ifdef IN_RING3
2017/**
2018 * Transmit queue consumer
2019 * This is just a very simple way of delaying sending to R3.
2020 *
2021 * @returns Success indicator.
2022 * If false the item will not be removed and the flushing will stop.
2023 * @param pDevIns The device instance.
2024 * @param pItem The item to consume. Upon return this item will be freed.
2025 */
2026static DECLCALLBACK(bool) pcnetXmitQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
2027{
2028 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
2029 NOREF(pItem);
2030
2031 /*
2032 * Transmit as much as we can.
2033 */
2034 pcnetXmitPending(pThis, true /*fOnWorkerThread*/);
2035
2036 return true;
2037}
2038#endif /* IN_RING3 */
2039
2040
2041/**
2042 * Allocates a scatter/gather buffer for a transfer.
2043 *
2044 * @returns See PPDMINETWORKUP::pfnAllocBuf.
2045 * @param pThis The device instance.
2046 * @param cbMin The minimum buffer size.
2047 * @param fLoopback Set if we're in loopback mode.
2048 * @param pSgLoop Pointer to stack storage for the loopback SG.
2049 * @param ppSgBuf Where to return the SG buffer descriptor on success.
2050 * Always set.
2051 */
2052DECLINLINE(int) pcnetXmitAllocBuf(PPCNETSTATE pThis, size_t cbMin, bool fLoopback,
2053 PPDMSCATTERGATHER pSgLoop, PPPDMSCATTERGATHER ppSgBuf)
2054{
2055 int rc;
2056
2057 if (RT_UNLIKELY(fLoopback)) /* hope that loopback mode is rare */
2058 {
2059 pSgLoop->fFlags = PDMSCATTERGATHER_FLAGS_MAGIC | PDMSCATTERGATHER_FLAGS_OWNER_1;
2060 pSgLoop->cbUsed = 0;
2061 pSgLoop->cbAvailable = sizeof(pThis->abLoopBuf);
2062 pSgLoop->pvAllocator = pThis;
2063 pSgLoop->pvUser = NULL;
2064 pSgLoop->cSegs = 1;
2065 pSgLoop->aSegs[0].cbSeg = sizeof(pThis->abLoopBuf);
2066 pSgLoop->aSegs[0].pvSeg = pThis->abLoopBuf;
2067 *ppSgBuf = pSgLoop;
2068 rc = VINF_SUCCESS;
2069 }
2070 else
2071 {
2072 PPDMINETWORKUP pDrv = pThis->CTX_SUFF(pDrv);
2073 if (RT_LIKELY(pDrv))
2074 {
2075 rc = pDrv->pfnAllocBuf(pDrv, cbMin, NULL /*pGso*/, ppSgBuf);
2076 AssertMsg(rc == VINF_SUCCESS || rc == VERR_TRY_AGAIN || rc == VERR_NET_DOWN || rc == VERR_NO_MEMORY, ("%Rrc\n", rc));
2077 if (RT_FAILURE(rc))
2078 *ppSgBuf = NULL;
2079 }
2080 else
2081 {
2082 rc = VERR_NET_DOWN;
2083 *ppSgBuf = NULL;
2084 }
2085 }
2086 return rc;
2087}
2088
2089
2090/**
2091 * Frees an unsent buffer.
2092 *
2093 * @param pThis The device instance.
2094 * @param fLoopback Set if we're in loopback mode.
2095 * @param pSgBuf The SG to free. Can be NULL.
2096 */
2097DECLINLINE(void) pcnetXmitFreeBuf(PPCNETSTATE pThis, bool fLoopback, PPDMSCATTERGATHER pSgBuf)
2098{
2099 if (pSgBuf)
2100 {
2101 if (RT_UNLIKELY(fLoopback))
2102 pSgBuf->pvAllocator = NULL;
2103 else
2104 {
2105 PPDMINETWORKUP pDrv = pThis->CTX_SUFF(pDrv);
2106 if (RT_LIKELY(pDrv))
2107 pDrv->pfnFreeBuf(pDrv, pSgBuf);
2108 }
2109 }
2110}
2111
2112
2113/**
2114 * Sends the scatter/gather buffer.
2115 *
2116 * Wrapper around PDMINETWORKUP::pfnSendBuf, so check it out for the fine print.
2117 *
2118 * @returns See PDMINETWORKUP::pfnSendBuf.
2119 * @param pThis The device instance.
2120 * @param fLoopback Set if we're in loopback mode.
2121 * @param pSgBuf The SG to send.
2122 * @param fOnWorkerThread Set if we're being called on a work thread. Clear
2123 * if an EMT.
2124 */
2125DECLINLINE(int) pcnetXmitSendBuf(PPCNETSTATE pThis, bool fLoopback, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread)
2126{
2127 int rc;
2128 STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, pSgBuf->cbUsed);
2129 if (RT_UNLIKELY(fLoopback)) /* hope that loopback mode is rare */
2130 {
2131 Assert(pSgBuf->pvAllocator == (void *)pThis);
2132 pThis->Led.Asserted.s.fReading = pThis->Led.Actual.s.fReading = 1;
2133 if (HOST_IS_OWNER(CSR_CRST(pThis)))
2134 pcnetRdtePoll(pThis);
2135
2136 pcnetReceiveNoSync(pThis, pThis->abLoopBuf, pSgBuf->cbUsed, true /* fAddFCS */);
2137 pThis->Led.Actual.s.fReading = 0;
2138 rc = VINF_SUCCESS;
2139 }
2140 else
2141 {
2142 /** @todo We used to leave the critsect here, not sure if that's necessary any
2143 * longer. If we could avoid that we could cache a bit more info in
2144 * the loop and make it part of the driver<->device contract, saving
2145 * critsect mess down in DrvIntNet. */
2146 STAM_PROFILE_START(&pThis->CTX_SUFF_Z(StatTransmitSend), a);
2147 if (pSgBuf->cbUsed > 70) /* unqualified guess */
2148 pThis->Led.Asserted.s.fWriting = pThis->Led.Actual.s.fWriting = 1;
2149
2150 PPDMINETWORKUP pDrv = pThis->CTX_SUFF(pDrv);
2151 if (RT_LIKELY(pDrv))
2152 {
2153 rc = pDrv->pfnSendBuf(pDrv, pSgBuf, fOnWorkerThread);
2154 AssertMsg(rc == VINF_SUCCESS || rc == VERR_NET_DOWN || rc == VERR_NET_NO_BUFFER_SPACE, ("%Rrc\n", rc));
2155 }
2156 else
2157 rc = VERR_NET_DOWN;
2158
2159 pThis->Led.Actual.s.fWriting = 0;
2160 STAM_PROFILE_STOP(&pThis->CTX_SUFF_Z(StatTransmitSend), a);
2161 }
2162 return rc;
2163}
2164
2165
2166/**
2167 * pcnetXmitRead1st worker that handles the unlikely + slower segmented code
2168 * path.
2169 */
2170static void pcnetXmitRead1stSlow(PPCNETSTATE pThis, RTGCPHYS32 GCPhysFrame, unsigned cbFrame,
2171 PPDMSCATTERGATHER pSgBuf)
2172{
2173 AssertFailed(); /* This path is not supposed to be taken atm */
2174
2175 pSgBuf->cbUsed = cbFrame;
2176 for (uint32_t iSeg = 0; ; iSeg++)
2177 {
2178 Assert(iSeg < pSgBuf->cSegs);
2179 uint32_t cbRead = (uint32_t)RT_MIN(cbFrame, pSgBuf->aSegs[iSeg].cbSeg);
2180 PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCPhysFrame, pSgBuf->aSegs[iSeg].pvSeg, cbRead);
2181 cbFrame -= cbRead;
2182 if (!cbFrame)
2183 return;
2184 GCPhysFrame += cbRead;
2185 }
2186}
2187
2188
2189/**
2190 * pcnetXmitSgReadMore worker that handles the unlikely + slower segmented code
2191 * path.
2192 */
2193static void pcnetXmitReadMoreSlow(PPCNETSTATE pThis, RTGCPHYS32 GCPhysFrame, unsigned cbFrame,
2194 PPDMSCATTERGATHER pSgBuf)
2195{
2196 AssertFailed(); /* This path is not supposed to be taken atm */
2197
2198 /* Find the segment which we'll put the next byte into. */
2199 size_t off = pSgBuf->cbUsed;
2200 size_t offSeg = 0;
2201 uint32_t iSeg = 0;
2202 while (offSeg + pSgBuf->aSegs[iSeg].cbSeg <= off)
2203 {
2204 offSeg += pSgBuf->aSegs[iSeg].cbSeg;
2205 iSeg++;
2206 Assert(iSeg < pSgBuf->cSegs);
2207 }
2208
2209 /* Commit before we start copying so we can decrement cbFrame. */
2210 pSgBuf->cbUsed = off + cbFrame;
2211
2212 /* Deal with the first segment if we at an offset into it. */
2213 if (off != offSeg)
2214 {
2215 size_t offIntoSeg = off - offSeg;
2216 uint32_t cbRead = (uint32_t)RT_MIN(pSgBuf->aSegs[iSeg].cbSeg - offIntoSeg, cbFrame);
2217 PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCPhysFrame,
2218 (uint8_t *)pSgBuf->aSegs[iSeg].pvSeg + offIntoSeg, cbRead);
2219 cbFrame -= cbRead;
2220 if (!cbFrame)
2221 return;
2222 GCPhysFrame += cbRead;
2223 iSeg++;
2224 }
2225
2226 /* For the remainder, we've got whole segments. */
2227 for (;; iSeg++)
2228 {
2229 Assert(iSeg < pSgBuf->cSegs);
2230
2231 uint32_t cbRead = (uint32_t)RT_MIN(pSgBuf->aSegs[iSeg].cbSeg, cbFrame);
2232 PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCPhysFrame, pSgBuf->aSegs[iSeg].pvSeg, cbRead);
2233 cbFrame -= cbRead;
2234 if (!cbFrame)
2235 return;
2236 GCPhysFrame += cbFrame;
2237 }
2238}
2239
2240
2241/**
2242 * Reads the first part of a frame into the scatter gather buffer.
2243 */
2244DECLINLINE(void) pcnetXmitRead1st(PPCNETSTATE pThis, RTGCPHYS32 GCPhysFrame, const unsigned cbFrame,
2245 PPDMSCATTERGATHER pSgBuf)
2246{
2247 Assert(PDMCritSectIsOwner(&pThis->CritSect));
2248 Assert(pSgBuf->cbAvailable >= cbFrame);
2249
2250 if (RT_LIKELY(pSgBuf->aSegs[0].cbSeg >= cbFrame)) /* justification: all drivers returns a single segment atm. */
2251 {
2252 pSgBuf->cbUsed = cbFrame;
2253 PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCPhysFrame, pSgBuf->aSegs[0].pvSeg, cbFrame);
2254 }
2255 else
2256 pcnetXmitRead1stSlow(pThis, GCPhysFrame, cbFrame, pSgBuf);
2257}
2258
2259/**
2260 * Reads more into the current frame.
2261 */
2262DECLINLINE(void) pcnetXmitReadMore(PPCNETSTATE pThis, RTGCPHYS32 GCPhysFrame, const unsigned cbFrame,
2263 PPDMSCATTERGATHER pSgBuf)
2264{
2265 size_t off = pSgBuf->cbUsed;
2266 Assert(pSgBuf->cbAvailable >= cbFrame + off);
2267
2268 if (RT_LIKELY(pSgBuf->aSegs[0].cbSeg >= cbFrame + off))
2269 {
2270 pSgBuf->cbUsed = cbFrame + off;
2271 PDMDevHlpPhysRead(pThis->CTX_SUFF(pDevIns), GCPhysFrame,
2272 (uint8_t *)pSgBuf->aSegs[0].pvSeg + off, cbFrame);
2273 }
2274 else
2275 pcnetXmitReadMoreSlow(pThis, GCPhysFrame, cbFrame, pSgBuf);
2276}
2277
2278
2279/**
2280 * Fails a TMD with a link down error.
2281 */
2282static void pcnetXmitFailTMDLinkDown(PPCNETSTATE pThis, TMD *pTmd)
2283{
2284 /* make carrier error - hope this is correct. */
2285 pThis->cLinkDownReported++;
2286 pTmd->tmd2.lcar = pTmd->tmd1.err = 1;
2287 pThis->aCSR[0] |= RT_BIT(15) | RT_BIT(13); /* ERR | CERR */
2288 pThis->Led.Asserted.s.fError = pThis->Led.Actual.s.fError = 1;
2289 Log(("#%d pcnetTransmit: Signaling send error. swstyle=%#x\n",
2290 PCNET_INST_NR, pThis->aBCR[BCR_SWS]));
2291}
2292
2293/**
2294 * Fails a TMD with a generic error.
2295 */
2296static void pcnetXmitFailTMDGeneric(PPCNETSTATE pThis, TMD *pTmd)
2297{
2298 /* make carrier error - hope this is correct. */
2299 pTmd->tmd2.lcar = pTmd->tmd1.err = 1;
2300 pThis->aCSR[0] |= RT_BIT(15) | RT_BIT(13); /* ERR | CERR */
2301 pThis->Led.Asserted.s.fError = pThis->Led.Actual.s.fError = 1;
2302 Log(("#%d pcnetTransmit: Signaling send error. swstyle=%#x\n",
2303 PCNET_INST_NR, pThis->aBCR[BCR_SWS]));
2304}
2305
2306
2307/**
2308 * Try to transmit frames
2309 */
2310static void pcnetTransmit(PPCNETSTATE pThis)
2311{
2312 if (RT_UNLIKELY(!CSR_TXON(pThis)))
2313 {
2314 pThis->aCSR[0] &= ~0x0008; /* Clear TDMD */
2315 return;
2316 }
2317
2318 /*
2319 * Check the current transmit descriptors.
2320 */
2321 TMD tmd;
2322 if (!pcnetTdtePoll(pThis, &tmd))
2323 return;
2324
2325 /*
2326 * Clear TDMD.
2327 */
2328 pThis->aCSR[0] &= ~0x0008;
2329
2330 /*
2331 * Transmit pending packets if possible, defer it if we cannot do it
2332 * in the current context.
2333 */
2334#if defined(IN_RING0) || defined(IN_RC)
2335 if (!pThis->CTX_SUFF(pDrv))
2336 {
2337 PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pThis->CTX_SUFF(pXmitQueue));
2338 if (RT_UNLIKELY(pItem))
2339 PDMQueueInsert(pThis->CTX_SUFF(pXmitQueue), pItem);
2340 }
2341 else
2342#endif
2343 {
2344 int rc = pcnetXmitPending(pThis, false /*fOnWorkerThread*/);
2345 if (rc == VERR_TRY_AGAIN)
2346 rc = VINF_SUCCESS;
2347 AssertRC(rc);
2348 }
2349}
2350
2351
2352/**
2353 * Actually try transmit frames.
2354 *
2355 * @threads TX or EMT.
2356 */
2357static int pcnetAsyncTransmit(PPCNETSTATE pThis, bool fOnWorkerThread)
2358{
2359 Assert(PDMCritSectIsOwner(&pThis->CritSect));
2360
2361 /*
2362 * Just cleared transmit demand if the transmitter is off.
2363 */
2364 if (RT_UNLIKELY(!CSR_TXON(pThis)))
2365 {
2366 pThis->aCSR[0] &= ~0x0008; /* Clear TDMD */
2367 return VINF_SUCCESS;
2368 }
2369
2370 /*
2371 * Iterate the transmit descriptors.
2372 */
2373 int rc;
2374 unsigned cFlushIrq = 0;
2375 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatTransmit), a);
2376 do
2377 {
2378#ifdef VBOX_WITH_STATISTICS
2379 unsigned cBuffers = 1;
2380#endif
2381 TMD tmd;
2382 if (!pcnetTdtePoll(pThis, &tmd))
2383 break;
2384
2385 /* Don't continue sending packets when the link is down. */
2386 if (RT_UNLIKELY( !pcnetIsLinkUp(pThis)
2387 && pThis->cLinkDownReported > PCNET_MAX_LINKDOWN_REPORTED)
2388 )
2389 break;
2390
2391#ifdef PCNET_DEBUG_TMD
2392 Log2(("#%d TMDLOAD %#010x\n", PCNET_INST_NR, PHYSADDR(pThis, CSR_CXDA(pThis))));
2393 PRINT_TMD(&tmd);
2394#endif
2395 bool const fLoopback = CSR_LOOP(pThis);
2396 PDMSCATTERGATHER SgLoop;
2397 PPDMSCATTERGATHER pSgBuf;
2398
2399 /*
2400 * The typical case - a complete packet.
2401 */
2402 if (tmd.tmd1.stp && tmd.tmd1.enp)
2403 {
2404 const unsigned cb = 4096 - tmd.tmd1.bcnt;
2405 Log(("#%d pcnetAsyncTransmit: stp&enp: cb=%d xmtrc=%#x\n", PCNET_INST_NR, cb, CSR_XMTRC(pThis)));
2406 STAM_COUNTER_INC(&pThis->StatTransmitCase1);
2407
2408 if (RT_LIKELY(pcnetIsLinkUp(pThis) || fLoopback))
2409 {
2410 /* From the manual: ``A zero length buffer is acceptable as
2411 * long as it is not the last buffer in a chain (STP = 0 and
2412 * ENP = 1).'' That means that the first buffer might have a
2413 * zero length if it is not the last one in the chain. */
2414 if (RT_LIKELY(cb <= MAX_FRAME))
2415 {
2416 rc = pcnetXmitAllocBuf(pThis, cb, fLoopback, &SgLoop, &pSgBuf);
2417 if (RT_SUCCESS(rc))
2418 {
2419 pcnetXmitRead1st(pThis, PHYSADDR(pThis, tmd.tmd0.tbadr), cb, pSgBuf);
2420 rc = pcnetXmitSendBuf(pThis, fLoopback, pSgBuf, fOnWorkerThread);
2421 }
2422 else if (rc == VERR_TRY_AGAIN)
2423 {
2424 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTransmit), a);
2425 return VINF_SUCCESS;
2426 }
2427 if (RT_FAILURE(rc))
2428 pcnetXmitFailTMDLinkDown(pThis, &tmd);
2429 }
2430 else if (cb == 4096)
2431 {
2432 /* The Windows NT4 pcnet driver sometimes marks the first
2433 * unused descriptor as owned by us. Ignore that (by
2434 * passing it back). Do not update the ring counter in this
2435 * case (otherwise that driver becomes even more confused,
2436 * which causes transmit to stall for about 10 seconds).
2437 * This is just a workaround, not a final solution. */
2438 /* r=frank: IMHO this is the correct implementation. The
2439 * manual says: ``If the OWN bit is set and the buffer
2440 * length is 0, the OWN bit will be cleared. In the C-LANCE
2441 * the buffer length of 0 is interpreted as a 4096-byte
2442 * buffer.'' */
2443 LogRel(("PCNet#%d: pcnetAsyncTransmit: illegal 4kb frame -> ignoring\n", PCNET_INST_NR));
2444 pcnetTmdStorePassHost(pThis, &tmd, PHYSADDR(pThis, CSR_CXDA(pThis)));
2445 break;
2446 }
2447 else
2448 {
2449 /* Signal error, as this violates the Ethernet specs. */
2450 /** @todo check if the correct error is generated. */
2451 LogRel(("PCNet#%d: pcnetAsyncTransmit: illegal 4kb frame -> signalling error\n", PCNET_INST_NR));
2452
2453 pcnetXmitFailTMDGeneric(pThis, &tmd);
2454 }
2455 }
2456 else
2457 pcnetXmitFailTMDLinkDown(pThis, &tmd);
2458
2459 /* Write back the TMD and pass it to the host (clear own bit). */
2460 pcnetTmdStorePassHost(pThis, &tmd, PHYSADDR(pThis, CSR_CXDA(pThis)));
2461
2462 /* advance the ring counter register */
2463 if (CSR_XMTRC(pThis) < 2)
2464 CSR_XMTRC(pThis) = CSR_XMTRL(pThis);
2465 else
2466 CSR_XMTRC(pThis)--;
2467 }
2468 else if (tmd.tmd1.stp)
2469 {
2470 STAM_COUNTER_INC(&pThis->StatTransmitCase2);
2471
2472 /*
2473 * Read TMDs until end-of-packet or tdte poll fails (underflow).
2474 *
2475 * We allocate a maximum sized buffer here since we do not wish to
2476 * waste time finding out how much space we actually need even if
2477 * we could reliably do that on SMP guests.
2478 */
2479 unsigned cb = 4096 - tmd.tmd1.bcnt;
2480 rc = pcnetXmitAllocBuf(pThis, pcnetCalcPacketLen(pThis, cb), fLoopback, &SgLoop, &pSgBuf);
2481 if (rc == VERR_TRY_AGAIN)
2482 {
2483 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTransmit), a);
2484 return VINF_SUCCESS;
2485 }
2486
2487 bool fDropFrame = RT_FAILURE(rc);
2488 if (!fDropFrame)
2489 pcnetXmitRead1st(pThis, PHYSADDR(pThis, tmd.tmd0.tbadr), cb, pSgBuf);
2490
2491 for (;;)
2492 {
2493 /*
2494 * Advance the ring counter register and check the next tmd.
2495 */
2496#ifdef LOG_ENABLED
2497 const uint32_t iStart = CSR_XMTRC(pThis);
2498#endif
2499 const uint32_t GCPhysPrevTmd = PHYSADDR(pThis, CSR_CXDA(pThis));
2500 if (CSR_XMTRC(pThis) < 2)
2501 CSR_XMTRC(pThis) = CSR_XMTRL(pThis);
2502 else
2503 CSR_XMTRC(pThis)--;
2504
2505 TMD dummy;
2506 if (!pcnetTdtePoll(pThis, &dummy))
2507 {
2508 /*
2509 * Underflow!
2510 */
2511 tmd.tmd2.buff = tmd.tmd2.uflo = tmd.tmd1.err = 1;
2512 pThis->aCSR[0] |= 0x0200; /* set TINT */
2513 /* Don't allow the guest to clear TINT before reading it */
2514 pThis->u16CSR0LastSeenByGuest &= ~0x0200;
2515 if (!CSR_DXSUFLO(pThis)) /* stop on xmit underflow */
2516 pThis->aCSR[0] &= ~0x0010; /* clear TXON */
2517 pcnetTmdStorePassHost(pThis, &tmd, GCPhysPrevTmd);
2518 AssertMsgFailed(("pcnetAsyncTransmit: Underflow!!!\n"));
2519 pcnetXmitFreeBuf(pThis, fLoopback, pSgBuf);
2520 break;
2521 }
2522
2523 /* release & save the previous tmd, pass it to the host */
2524 pcnetTmdStorePassHost(pThis, &tmd, GCPhysPrevTmd);
2525
2526 /*
2527 * The next tmd.
2528 */
2529#ifdef VBOX_WITH_STATISTICS
2530 cBuffers++;
2531#endif
2532 pcnetTmdLoad(pThis, &tmd, PHYSADDR(pThis, CSR_CXDA(pThis)), false);
2533 cb = 4096 - tmd.tmd1.bcnt;
2534 if ( !fDropFrame
2535 && pSgBuf->cbUsed + cb <= MAX_FRAME) /** @todo this used to be ... + cb < MAX_FRAME. */
2536 pcnetXmitReadMore(pThis, PHYSADDR(pThis, tmd.tmd0.tbadr), cb, pSgBuf);
2537 else
2538 {
2539 AssertMsg(fDropFrame, ("pcnetAsyncTransmit: Frame is too big!!! %d bytes\n", pSgBuf->cbUsed + cb));
2540 fDropFrame = true;
2541 }
2542
2543 /*
2544 * Done already?
2545 */
2546 if (tmd.tmd1.enp)
2547 {
2548 Log(("#%d pcnetAsyncTransmit: stp: cb=%d xmtrc=%#x-%#x\n", PCNET_INST_NR,
2549 pSgBuf ? pSgBuf->cbUsed : 0, iStart, CSR_XMTRC(pThis)));
2550 if (!fDropFrame && (pcnetIsLinkUp(pThis) || fLoopback))
2551 {
2552 rc = pcnetXmitSendBuf(pThis, fLoopback, pSgBuf, fOnWorkerThread);
2553 fDropFrame = RT_FAILURE(rc);
2554 }
2555 else
2556 pcnetXmitFreeBuf(pThis, fLoopback, pSgBuf);
2557 if (fDropFrame)
2558 pcnetXmitFailTMDLinkDown(pThis, &tmd);
2559
2560 /* Write back the TMD, pass it to the host */
2561 pcnetTmdStorePassHost(pThis, &tmd, PHYSADDR(pThis, CSR_CXDA(pThis)));
2562
2563 /* advance the ring counter register */
2564 if (CSR_XMTRC(pThis) < 2)
2565 CSR_XMTRC(pThis) = CSR_XMTRL(pThis);
2566 else
2567 CSR_XMTRC(pThis)--;
2568 break;
2569 }
2570 } /* the loop */
2571 }
2572 else
2573 {
2574 /*
2575 * We underflowed in a previous transfer, or the driver is giving us shit.
2576 * Simply stop the transmitting for now.
2577 */
2578 /** @todo according to the specs we're supposed to clear the own bit and move on to the next one. */
2579 Log(("#%d pcnetAsyncTransmit: guest is giving us shit!\n", PCNET_INST_NR));
2580 break;
2581 }
2582 /* Update TDMD, TXSTRT and TINT. */
2583 pThis->aCSR[0] &= ~0x0008; /* clear TDMD */
2584
2585 pThis->aCSR[4] |= 0x0008; /* set TXSTRT */
2586 if ( !CSR_TOKINTD(pThis) /* Transmit OK Interrupt Disable, no infl. on errors. */
2587 || (CSR_LTINTEN(pThis) && tmd.tmd1.ltint)
2588 || tmd.tmd1.err)
2589 {
2590 cFlushIrq++;
2591 }
2592
2593 /** @todo should we continue after an error (tmd.tmd1.err) or not? */
2594
2595 STAM_COUNTER_INC(&pThis->aStatXmitChainCounts[RT_MIN(cBuffers,
2596 RT_ELEMENTS(pThis->aStatXmitChainCounts)) - 1]);
2597 } while (CSR_TXON(pThis)); /* transfer on */
2598
2599 if (cFlushIrq)
2600 {
2601 STAM_COUNTER_INC(&pThis->aStatXmitFlush[RT_MIN(cFlushIrq, RT_ELEMENTS(pThis->aStatXmitFlush)) - 1]);
2602 /* The WinXP PCnet driver has apparently a bug: It sets CSR0.TDMD _before_
2603 * it clears CSR0.TINT. This can lead to a race where the driver clears
2604 * CSR0.TINT right after it was set by the device. The driver waits until
2605 * CSR0.TINT is set again but this will never happen. So prevent clearing
2606 * this bit as long as the driver didn't read it. See @bugref{5288}. */
2607 pThis->aCSR[0] |= 0x0200; /* set TINT */
2608 /* Don't allow the guest to clear TINT before reading it */
2609 pThis->u16CSR0LastSeenByGuest &= ~0x0200;
2610 pcnetUpdateIrq(pThis);
2611 }
2612
2613 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatTransmit), a);
2614
2615 return VINF_SUCCESS;
2616}
2617
2618
2619/**
2620 * Transmit pending descriptors.
2621 *
2622 * @returns VBox status code. VERR_TRY_AGAIN is returned if we're busy.
2623 *
2624 * @param pThis The PCNet instance data.
2625 * @param fOnWorkerThread Whether we're on a worker thread or on an EMT.
2626 */
2627static int pcnetXmitPending(PPCNETSTATE pThis, bool fOnWorkerThread)
2628{
2629 RT_NOREF_PV(fOnWorkerThread);
2630 int rc;
2631
2632 /*
2633 * Grab the xmit lock of the driver as well as the E1K device state.
2634 */
2635 PPDMINETWORKUP pDrv = pThis->CTX_SUFF(pDrv);
2636 if (pDrv)
2637 {
2638 rc = pDrv->pfnBeginXmit(pDrv, false /*fOnWorkerThread*/);
2639 if (RT_FAILURE(rc))
2640 return rc;
2641 }
2642 rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
2643 if (RT_SUCCESS(rc))
2644 {
2645 /** @todo check if we're supposed to suspend now. */
2646 /*
2647 * Do the transmitting.
2648 */
2649 int rc2 = pcnetAsyncTransmit(pThis, false /*fOnWorkerThread*/);
2650 AssertReleaseRC(rc2);
2651
2652 /*
2653 * Release the locks.
2654 */
2655 PDMCritSectLeave(&pThis->CritSect);
2656 }
2657 else
2658 AssertLogRelRC(rc);
2659 if (pDrv)
2660 pDrv->pfnEndXmit(pDrv);
2661
2662 return rc;
2663}
2664
2665
2666/**
2667 * Poll for changes in RX and TX descriptor rings.
2668 */
2669static void pcnetPollRxTx(PPCNETSTATE pThis)
2670{
2671 if (CSR_RXON(pThis))
2672 {
2673 /*
2674 * The second case is important for pcnetWaitReceiveAvail(): If CSR_CRST(pThis) was
2675 * true but pcnetCanReceive() returned false for some other reason we need to check
2676 * _now_ if we have to wakeup pcnetWaitReceiveAvail().
2677 */
2678 if ( HOST_IS_OWNER(CSR_CRST(pThis)) /* only poll RDTEs if none available or ... */
2679 || pThis->fMaybeOutOfSpace) /* ... for waking up pcnetWaitReceiveAvail() */
2680 pcnetRdtePoll(pThis);
2681 }
2682
2683 if (CSR_TDMD(pThis) || (CSR_TXON(pThis) && !CSR_DPOLL(pThis)))
2684 pcnetTransmit(pThis);
2685}
2686
2687
2688#ifndef PCNET_NO_POLLING
2689/**
2690 * Start the poller timer.
2691 * Poll timer interval is fixed to 500Hz. Don't stop it.
2692 * @thread EMT, TAP.
2693 */
2694static void pcnetPollTimerStart(PPCNETSTATE pThis)
2695{
2696 TMTimerSetMillies(pThis->CTX_SUFF(pTimerPoll), 2);
2697}
2698#endif
2699
2700
2701/**
2702 * Update the poller timer.
2703 * @thread EMT.
2704 */
2705static void pcnetPollTimer(PPCNETSTATE pThis)
2706{
2707 STAM_PROFILE_ADV_START(&pThis->StatPollTimer, a);
2708
2709#ifdef LOG_ENABLED
2710 TMD dummy;
2711 if (CSR_STOP(pThis) || CSR_SPND(pThis))
2712 Log2(("#%d pcnetPollTimer time=%#010llx CSR_STOP=%d CSR_SPND=%d\n",
2713 PCNET_INST_NR, RTTimeMilliTS(), CSR_STOP(pThis), CSR_SPND(pThis)));
2714 else
2715 Log2(("#%d pcnetPollTimer time=%#010llx TDMD=%d TXON=%d POLL=%d TDTE=%d TDRA=%#x\n",
2716 PCNET_INST_NR, RTTimeMilliTS(), CSR_TDMD(pThis), CSR_TXON(pThis),
2717 !CSR_DPOLL(pThis), pcnetTdtePoll(pThis, &dummy), pThis->GCTDRA));
2718 Log2(("#%d pcnetPollTimer: CSR_CXDA=%#x CSR_XMTRL=%d CSR_XMTRC=%d\n",
2719 PCNET_INST_NR, CSR_CXDA(pThis), CSR_XMTRL(pThis), CSR_XMTRC(pThis)));
2720#endif
2721#ifdef PCNET_DEBUG_TMD
2722 if (CSR_CXDA(pThis))
2723 {
2724 TMD tmd;
2725 pcnetTmdLoad(pThis, &tmd, PHYSADDR(pThis, CSR_CXDA(pThis)), false);
2726 Log2(("#%d pcnetPollTimer: TMDLOAD %#010x\n", PCNET_INST_NR, PHYSADDR(pThis, CSR_CXDA(pThis))));
2727 PRINT_TMD(&tmd);
2728 }
2729#endif
2730 if (CSR_TDMD(pThis))
2731 pcnetTransmit(pThis);
2732
2733 pcnetUpdateIrq(pThis);
2734
2735 /* If the receive thread is waiting for new descriptors, poll TX/RX even if polling
2736 * disabled. We wouldn't need to poll for new TX descriptors in that case but it will
2737 * not hurt as waiting for RX descriptors should happen very seldom */
2738 if (RT_LIKELY( !CSR_STOP(pThis)
2739 && !CSR_SPND(pThis)
2740 && ( !CSR_DPOLL(pThis)
2741 || pThis->fMaybeOutOfSpace)))
2742 {
2743 /* We ensure that we poll at least every 2ms (500Hz) but not more often than
2744 * 5000 times per second. This way we completely prevent the overhead from
2745 * heavy reprogramming the timer which turned out to be very CPU-intensive.
2746 * The drawback is that csr46 and csr47 are not updated properly anymore
2747 * but so far I have not seen any guest depending on these values. The 2ms
2748 * interval is the default polling interval of the PCNet card (65536/33MHz). */
2749#ifdef PCNET_NO_POLLING
2750 pcnetPollRxTx(pThis);
2751#else
2752 uint64_t u64Now = TMTimerGet(pThis->CTX_SUFF(pTimerPoll));
2753 if (RT_UNLIKELY(u64Now - pThis->u64LastPoll > 200000))
2754 {
2755 pThis->u64LastPoll = u64Now;
2756 pcnetPollRxTx(pThis);
2757 }
2758 if (!TMTimerIsActive(pThis->CTX_SUFF(pTimerPoll)))
2759 pcnetPollTimerStart(pThis);
2760#endif
2761 }
2762 STAM_PROFILE_ADV_STOP(&pThis->StatPollTimer, a);
2763}
2764
2765
2766static int pcnetCSRWriteU16(PPCNETSTATE pThis, uint32_t u32RAP, uint32_t val)
2767{
2768 int rc = VINF_SUCCESS;
2769#ifdef PCNET_DEBUG_CSR
2770 Log(("#%d pcnetCSRWriteU16: rap=%d val=%#06x\n", PCNET_INST_NR, u32RAP, val));
2771#endif
2772 switch (u32RAP)
2773 {
2774 case 0:
2775 {
2776 uint16_t csr0 = pThis->aCSR[0];
2777 /* Clear any interrupt flags.
2778 * Don't clear an interrupt flag which was not seen by the guest yet. */
2779 csr0 &= ~(val & 0x7f00 & pThis->u16CSR0LastSeenByGuest);
2780 csr0 = (csr0 & ~0x0040) | (val & 0x0048);
2781 val = (val & 0x007f) | (csr0 & 0x7f00);
2782
2783 /* Iff STOP, STRT and INIT are set, clear STRT and INIT */
2784 if ((val & 7) == 7)
2785 val &= ~3;
2786
2787 Log(("#%d CSR0: old=%#06x new=%#06x\n", PCNET_INST_NR, pThis->aCSR[0], csr0));
2788
2789#ifndef IN_RING3
2790 if (!(csr0 & 0x0001/*init*/) && (val & 1))
2791 {
2792 Log(("#%d pcnetCSRWriteU16: pcnetInit requested => HC\n", PCNET_INST_NR));
2793 return VINF_IOM_R3_IOPORT_WRITE;
2794 }
2795#endif
2796 pThis->aCSR[0] = csr0;
2797
2798 if (!CSR_STOP(pThis) && (val & 4))
2799 pcnetStop(pThis);
2800
2801#ifdef IN_RING3
2802 if (!CSR_INIT(pThis) && (val & 1))
2803 pcnetInit(pThis);
2804#endif
2805
2806 if (!CSR_STRT(pThis) && (val & 2))
2807 pcnetStart(pThis);
2808
2809 if (CSR_TDMD(pThis))
2810 pcnetTransmit(pThis);
2811
2812 return rc;
2813 }
2814 case 1: /* IADRL */
2815 case 2: /* IADRH */
2816 case 8: /* LADRF 0..15 */
2817 case 9: /* LADRF 16..31 */
2818 case 10: /* LADRF 32..47 */
2819 case 11: /* LADRF 48..63 */
2820 case 12: /* PADR 0..15 */
2821 case 13: /* PADR 16..31 */
2822 case 14: /* PADR 32..47 */
2823 case 18: /* CRBAL */
2824 case 19: /* CRBAU */
2825 case 20: /* CXBAL */
2826 case 21: /* CXBAU */
2827 case 22: /* NRBAL */
2828 case 23: /* NRBAU */
2829 case 26: /* NRDAL */
2830 case 27: /* NRDAU */
2831 case 28: /* CRDAL */
2832 case 29: /* CRDAU */
2833 case 32: /* NXDAL */
2834 case 33: /* NXDAU */
2835 case 34: /* CXDAL */
2836 case 35: /* CXDAU */
2837 case 36: /* NNRDL */
2838 case 37: /* NNRDU */
2839 case 38: /* NNXDL */
2840 case 39: /* NNXDU */
2841 case 40: /* CRBCL */
2842 case 41: /* CRBCU */
2843 case 42: /* CXBCL */
2844 case 43: /* CXBCU */
2845 case 44: /* NRBCL */
2846 case 45: /* NRBCU */
2847 case 46: /* POLL */
2848 case 47: /* POLLINT */
2849 case 72: /* RCVRC */
2850 case 74: /* XMTRC */
2851 case 112: /* MISSC */
2852 if (CSR_STOP(pThis) || CSR_SPND(pThis))
2853 break;
2854 case 3: /* Interrupt Mask and Deferral Control */
2855 break;
2856 case 4: /* Test and Features Control */
2857 pThis->aCSR[4] &= ~(val & 0x026a);
2858 val &= ~0x026a;
2859 val |= pThis->aCSR[4] & 0x026a;
2860 break;
2861 case 5: /* Extended Control and Interrupt 1 */
2862 pThis->aCSR[5] &= ~(val & 0x0a90);
2863 val &= ~0x0a90;
2864 val |= pThis->aCSR[5] & 0x0a90;
2865 break;
2866 case 7: /* Extended Control and Interrupt 2 */
2867 {
2868 uint16_t csr7 = pThis->aCSR[7];
2869 csr7 &= ~0x0400 ;
2870 csr7 &= ~(val & 0x0800);
2871 csr7 |= (val & 0x0400);
2872 pThis->aCSR[7] = csr7;
2873 return rc;
2874 }
2875 case 15: /* Mode */
2876 if ((pThis->aCSR[15] & 0x8000) != (uint16_t)(val & 0x8000) && pThis->pDrvR3)
2877 {
2878 Log(("#%d: promiscuous mode changed to %d\n", PCNET_INST_NR, !!(val & 0x8000)));
2879#ifndef IN_RING3
2880 return VINF_IOM_R3_IOPORT_WRITE;
2881#else
2882 /* check for promiscuous mode change */
2883 if (pThis->pDrvR3)
2884 pThis->pDrvR3->pfnSetPromiscuousMode(pThis->pDrvR3, !!(val & 0x8000));
2885#endif
2886 }
2887 break;
2888 case 16: /* IADRL */
2889 return pcnetCSRWriteU16(pThis, 1, val);
2890 case 17: /* IADRH */
2891 return pcnetCSRWriteU16(pThis, 2, val);
2892
2893 /*
2894 * 24 and 25 are the Base Address of Receive Descriptor.
2895 * We combine and mirror these in GCRDRA.
2896 */
2897 case 24: /* BADRL */
2898 case 25: /* BADRU */
2899 if (!CSR_STOP(pThis) && !CSR_SPND(pThis))
2900 {
2901 Log(("#%d: WRITE CSR%d, %#06x !!\n", PCNET_INST_NR, u32RAP, val));
2902 return rc;
2903 }
2904 if (u32RAP == 24)
2905 pThis->GCRDRA = (pThis->GCRDRA & 0xffff0000) | (val & 0x0000ffff);
2906 else
2907 pThis->GCRDRA = (pThis->GCRDRA & 0x0000ffff) | ((val & 0x0000ffff) << 16);
2908 Log(("#%d: WRITE CSR%d, %#06x => GCRDRA=%08x (alt init)\n", PCNET_INST_NR, u32RAP, val, pThis->GCRDRA));
2909 break;
2910
2911 /*
2912 * 30 & 31 are the Base Address of Transmit Descriptor.
2913 * We combine and mirrorthese in GCTDRA.
2914 */
2915 case 30: /* BADXL */
2916 case 31: /* BADXU */
2917 if (!CSR_STOP(pThis) && !CSR_SPND(pThis))
2918 {
2919 Log(("#%d: WRITE CSR%d, %#06x !!\n", PCNET_INST_NR, u32RAP, val));
2920 return rc;
2921 }
2922 if (u32RAP == 30)
2923 pThis->GCTDRA = (pThis->GCTDRA & 0xffff0000) | (val & 0x0000ffff);
2924 else
2925 pThis->GCTDRA = (pThis->GCTDRA & 0x0000ffff) | ((val & 0x0000ffff) << 16);
2926 Log(("#%d: WRITE CSR%d, %#06x => GCTDRA=%08x (alt init)\n", PCNET_INST_NR, u32RAP, val, pThis->GCTDRA));
2927 break;
2928
2929 case 58: /* Software Style */
2930 rc = pcnetBCRWriteU16(pThis, BCR_SWS, val);
2931 break;
2932
2933 /*
2934 * Registers 76 and 78 aren't stored correctly (see todos), but I'm don't dare
2935 * try fix that right now. So, as a quick hack for 'alt init' I'll just correct them here.
2936 */
2937 case 76: /* RCVRL */ /** @todo call pcnetUpdateRingHandlers */
2938 /** @todo receive ring length is stored in two's complement! */
2939 case 78: /* XMTRL */ /** @todo call pcnetUpdateRingHandlers */
2940 /** @todo transmit ring length is stored in two's complement! */
2941 if (!CSR_STOP(pThis) && !CSR_SPND(pThis))
2942 {
2943 Log(("#%d: WRITE CSR%d, %#06x !!\n", PCNET_INST_NR, u32RAP, val));
2944 return rc;
2945 }
2946 Log(("#%d: WRITE CSR%d, %#06x (hacked %#06x) (alt init)\n", PCNET_INST_NR,
2947 u32RAP, val, 1 + ~(uint16_t)val));
2948 val = 1 + ~(uint16_t)val;
2949
2950 /*
2951 * HACK ALERT! Set the counter registers too.
2952 */
2953 pThis->aCSR[u32RAP - 4] = val;
2954 break;
2955
2956 default:
2957 return rc;
2958 }
2959 pThis->aCSR[u32RAP] = val;
2960 return rc;
2961}
2962
2963/**
2964 * Encode a 32-bit link speed into a custom 16-bit floating-point value
2965 */
2966static uint32_t pcnetLinkSpd(uint32_t speed)
2967{
2968 unsigned exp = 0;
2969
2970 while (speed & 0xFFFFE000)
2971 {
2972 speed /= 10;
2973 ++exp;
2974 }
2975 return (exp << 13) | speed;
2976}
2977
2978static uint32_t pcnetCSRReadU16(PPCNETSTATE pThis, uint32_t u32RAP)
2979{
2980 uint32_t val;
2981 switch (u32RAP)
2982 {
2983 case 0:
2984 pcnetUpdateIrq(pThis);
2985 val = pThis->aCSR[0];
2986 val |= (val & 0x7800) ? 0x8000 : 0;
2987 pThis->u16CSR0LastSeenByGuest = val;
2988 break;
2989 case 16:
2990 return pcnetCSRReadU16(pThis, 1);
2991 case 17:
2992 return pcnetCSRReadU16(pThis, 2);
2993 case 58:
2994 return pcnetBCRReadU16(pThis, BCR_SWS);
2995 case 68: /* Custom register to pass link speed to driver */
2996 return pcnetLinkSpd(pThis->u32LinkSpeed);
2997 case 88:
2998 val = pThis->aCSR[89];
2999 val <<= 16;
3000 val |= pThis->aCSR[88];
3001 break;
3002 default:
3003 val = pThis->aCSR[u32RAP];
3004 }
3005#ifdef PCNET_DEBUG_CSR
3006 Log(("#%d pcnetCSRReadU16: rap=%d val=%#06x\n", PCNET_INST_NR, u32RAP, val));
3007#endif
3008 return val;
3009}
3010
3011static int pcnetBCRWriteU16(PPCNETSTATE pThis, uint32_t u32RAP, uint32_t val)
3012{
3013 int rc = VINF_SUCCESS;
3014 u32RAP &= 0x7f;
3015#ifdef PCNET_DEBUG_BCR
3016 Log2(("#%d pcnetBCRWriteU16: rap=%d val=%#06x\n", PCNET_INST_NR, u32RAP, val));
3017#endif
3018 switch (u32RAP)
3019 {
3020 case BCR_SWS:
3021 if (!(CSR_STOP(pThis) || CSR_SPND(pThis)))
3022 return rc;
3023 val &= ~0x0300;
3024 switch (val & 0x00ff)
3025 {
3026 default:
3027 Log(("#%d Bad SWSTYLE=%#04x\n", PCNET_INST_NR, val & 0xff));
3028 RT_FALL_THRU();
3029 case 0:
3030 val |= 0x0200; /* 16 bit */
3031 pThis->iLog2DescSize = 3;
3032 pThis->GCUpperPhys = (0xff00 & (uint32_t)pThis->aCSR[2]) << 16;
3033 break;
3034 case 1:
3035 val |= 0x0100; /* 32 bit */
3036 pThis->iLog2DescSize = 4;
3037 pThis->GCUpperPhys = 0;
3038 break;
3039 case 2:
3040 case 3:
3041 val |= 0x0300; /* 32 bit */
3042 pThis->iLog2DescSize = 4;
3043 pThis->GCUpperPhys = 0;
3044 break;
3045 }
3046 Log(("#%d BCR_SWS=%#06x\n", PCNET_INST_NR, val));
3047 pThis->aCSR[58] = val;
3048 RT_FALL_THRU();
3049 case BCR_LNKST:
3050 case BCR_LED1:
3051 case BCR_LED2:
3052 case BCR_LED3:
3053 case BCR_MC:
3054 case BCR_FDC:
3055 case BCR_BSBC:
3056 case BCR_EECAS:
3057 case BCR_PLAT:
3058 case BCR_MIICAS:
3059 case BCR_MIIADDR:
3060 pThis->aBCR[u32RAP] = val;
3061 break;
3062
3063 case BCR_STVAL:
3064 val &= 0xffff;
3065 pThis->aBCR[BCR_STVAL] = val;
3066 if (pThis->fAm79C973)
3067 TMTimerSetNano(pThis->CTX_SUFF(pTimerSoftInt), 12800U * val);
3068 break;
3069
3070 case BCR_MIIMDR:
3071 pThis->aMII[pThis->aBCR[BCR_MIIADDR] & 0x1f] = val;
3072#ifdef PCNET_DEBUG_MII
3073 Log(("#%d pcnet: mii write %d <- %#x\n", PCNET_INST_NR, pThis->aBCR[BCR_MIIADDR] & 0x1f, val));
3074#endif
3075 break;
3076
3077 default:
3078 break;
3079 }
3080 return rc;
3081}
3082
3083static uint32_t pcnetMIIReadU16(PPCNETSTATE pThis, uint32_t miiaddr)
3084{
3085 uint32_t val;
3086 bool autoneg, duplex, fast;
3087 STAM_COUNTER_INC(&pThis->StatMIIReads);
3088
3089 autoneg = (pThis->aBCR[BCR_MIICAS] & 0x20) != 0;
3090 duplex = (pThis->aBCR[BCR_MIICAS] & 0x10) != 0;
3091 fast = (pThis->aBCR[BCR_MIICAS] & 0x08) != 0;
3092
3093 switch (miiaddr)
3094 {
3095 case 0:
3096 /* MII basic mode control register. */
3097 val = 0;
3098 if (autoneg)
3099 val |= 0x1000; /* Enable auto negotiation. */
3100 if (fast)
3101 val |= 0x2000; /* 100 Mbps */
3102 if (duplex) /* Full duplex forced */
3103 val |= 0x0100; /* Full duplex */
3104 break;
3105
3106 case 1:
3107 /* MII basic mode status register. */
3108 val = 0x7800 /* Can do 100mbps FD/HD and 10mbps FD/HD. */
3109 | 0x0040 /* Mgmt frame preamble not required. */
3110 | 0x0020 /* Auto-negotiation complete. */
3111 | 0x0008 /* Able to do auto-negotiation. */
3112 | 0x0004 /* Link up. */
3113 | 0x0001; /* Extended Capability, i.e. registers 4+ valid. */
3114 if (!pThis->fLinkUp || pThis->fLinkTempDown) {
3115 val &= ~(0x0020 | 0x0004);
3116 pThis->cLinkDownReported++;
3117 }
3118 if (!autoneg) {
3119 /* Auto-negotiation disabled. */
3120 val &= ~(0x0020 | 0x0008);
3121 if (duplex)
3122 /* Full duplex forced. */
3123 val &= ~0x2800;
3124 else
3125 /* Half duplex forced. */
3126 val &= ~0x5000;
3127
3128 if (fast)
3129 /* 100 Mbps forced */
3130 val &= ~0x1800;
3131 else
3132 /* 10 Mbps forced */
3133 val &= ~0x6000;
3134 }
3135 break;
3136
3137 case 2:
3138 /* PHY identifier 1. */
3139 val = 0x22; /* Am79C874 PHY */
3140 break;
3141
3142 case 3:
3143 /* PHY identifier 2. */
3144 val = 0x561b; /* Am79C874 PHY */
3145 break;
3146
3147 case 4:
3148 /* Advertisement control register. */
3149 val = 0x01e0 /* Try 100mbps FD/HD and 10mbps FD/HD. */
3150#if 0
3151 // Advertising flow control is a) not the default, and b) confuses
3152 // the link speed detection routine in Windows PCnet driver
3153 | 0x0400 /* Try flow control. */
3154#endif
3155 | 0x0001; /* CSMA selector. */
3156 break;
3157
3158 case 5:
3159 /* Link partner ability register. */
3160 if (pThis->fLinkUp && !pThis->fLinkTempDown)
3161 val = 0x8000 /* Next page bit. */
3162 | 0x4000 /* Link partner acked us. */
3163 | 0x0400 /* Can do flow control. */
3164 | 0x01e0 /* Can do 100mbps FD/HD and 10mbps FD/HD. */
3165 | 0x0001; /* Use CSMA selector. */
3166 else
3167 {
3168 val = 0;
3169 pThis->cLinkDownReported++;
3170 }
3171 break;
3172
3173 case 6:
3174 /* Auto negotiation expansion register. */
3175 if (pThis->fLinkUp && !pThis->fLinkTempDown)
3176 val = 0x0008 /* Link partner supports npage. */
3177 | 0x0004 /* Enable npage words. */
3178 | 0x0001; /* Can do N-way auto-negotiation. */
3179 else
3180 {
3181 val = 0;
3182 pThis->cLinkDownReported++;
3183 }
3184 break;
3185
3186 default:
3187 val = 0;
3188 break;
3189 }
3190
3191#ifdef PCNET_DEBUG_MII
3192 Log(("#%d pcnet: mii read %d -> %#x\n", PCNET_INST_NR, miiaddr, val));
3193#endif
3194 return val;
3195}
3196
3197static uint32_t pcnetBCRReadU16(PPCNETSTATE pThis, uint32_t u32RAP)
3198{
3199 uint32_t val;
3200 u32RAP &= 0x7f;
3201 switch (u32RAP)
3202 {
3203 case BCR_LNKST:
3204 case BCR_LED1:
3205 case BCR_LED2:
3206 case BCR_LED3:
3207 val = pThis->aBCR[u32RAP] & ~0x8000;
3208 /* Clear LNKSTE if we're not connected or if we've just loaded a VM state. */
3209 if (!pThis->pDrvR3 || pThis->fLinkTempDown || !pThis->fLinkUp)
3210 {
3211 if (u32RAP == 4)
3212 pThis->cLinkDownReported++;
3213 val &= ~0x40;
3214 }
3215 val |= (val & 0x017f & pThis->u32Lnkst) ? 0x8000 : 0;
3216 break;
3217
3218 case BCR_MIIMDR:
3219 if (pThis->fAm79C973 && (pThis->aBCR[BCR_MIIADDR] >> 5 & 0x1f) == 0)
3220 {
3221 uint32_t miiaddr = pThis->aBCR[BCR_MIIADDR] & 0x1f;
3222 val = pcnetMIIReadU16(pThis, miiaddr);
3223 }
3224 else
3225 val = 0xffff;
3226 break;
3227
3228 default:
3229 val = u32RAP < BCR_MAX_RAP ? pThis->aBCR[u32RAP] : 0;
3230 break;
3231 }
3232#ifdef PCNET_DEBUG_BCR
3233 Log2(("#%d pcnetBCRReadU16: rap=%d val=%#06x\n", PCNET_INST_NR, u32RAP, val));
3234#endif
3235 return val;
3236}
3237
3238#ifdef IN_RING3 /* move down */
3239static void pcnetR3HardReset(PPCNETSTATE pThis)
3240{
3241 int i;
3242 uint16_t checksum;
3243
3244 /* Initialize the PROM */
3245 Assert(sizeof(pThis->MacConfigured) == 6);
3246 memcpy(pThis->aPROM, &pThis->MacConfigured, sizeof(pThis->MacConfigured));
3247 pThis->aPROM[ 8] = 0x00;
3248 pThis->aPROM[ 9] = 0x11;
3249 pThis->aPROM[12] = pThis->aPROM[13] = 0x00;
3250 pThis->aPROM[14] = pThis->aPROM[15] = 0x57;
3251
3252 for (i = 0, checksum = 0; i < 16; i++)
3253 checksum += pThis->aPROM[i];
3254 *(uint16_t *)&pThis->aPROM[12] = RT_H2LE_U16(checksum);
3255
3256 pThis->aBCR[BCR_MSRDA] = 0x0005;
3257 pThis->aBCR[BCR_MSWRA] = 0x0005;
3258 pThis->aBCR[BCR_MC ] = 0x0002;
3259 pThis->aBCR[BCR_LNKST] = 0x00c0;
3260 pThis->aBCR[BCR_LED1 ] = 0x0084;
3261 pThis->aBCR[BCR_LED2 ] = 0x0088;
3262 pThis->aBCR[BCR_LED3 ] = 0x0090;
3263 pThis->aBCR[BCR_FDC ] = 0x0000;
3264 pThis->aBCR[BCR_BSBC ] = 0x9001;
3265 pThis->aBCR[BCR_EECAS] = 0x0002;
3266 pThis->aBCR[BCR_STVAL] = 0xffff;
3267 pThis->aCSR[58 ] = /* CSR58 is an alias for BCR20 */
3268 pThis->aBCR[BCR_SWS ] = 0x0200;
3269 pThis->iLog2DescSize = 3;
3270 pThis->aBCR[BCR_PLAT ] = 0xff06;
3271 pThis->aBCR[BCR_MIIADDR ] = 0; /* Internal PHY on Am79C973 would be (0x1e << 5) */
3272 pThis->aBCR[BCR_PCIVID] = PCIDevGetVendorId(&pThis->PciDev);
3273 pThis->aBCR[BCR_PCISID] = PCIDevGetSubSystemId(&pThis->PciDev);
3274 pThis->aBCR[BCR_PCISVID] = PCIDevGetSubSystemVendorId(&pThis->PciDev);
3275
3276 /* Reset the error counter. */
3277 pThis->uCntBadRMD = 0;
3278
3279 pcnetSoftReset(pThis);
3280}
3281#endif /* IN_RING3 */
3282
3283
3284/* -=-=-=-=-=- APROM I/O Port access -=-=-=-=-=- */
3285
3286static void pcnetAPROMWriteU8(PPCNETSTATE pThis, uint32_t addr, uint32_t val)
3287{
3288 addr &= 0x0f;
3289 val &= 0xff;
3290 Log(("#%d pcnetAPROMWriteU8: addr=%#010x val=%#04x\n", PCNET_INST_NR, addr, val));
3291 /* Check APROMWE bit to enable write access */
3292 if (pcnetBCRReadU16(pThis, 2) & 0x80)
3293 pThis->aPROM[addr] = val;
3294}
3295
3296static uint32_t pcnetAPROMReadU8(PPCNETSTATE pThis, uint32_t addr)
3297{
3298 uint32_t val = pThis->aPROM[addr &= 0x0f];
3299 Log(("#%d pcnetAPROMReadU8: addr=%#010x val=%#04x\n", PCNET_INST_NR, addr, val));
3300 return val;
3301}
3302
3303/**
3304 * @callback_method_impl{FNIOMIOPORTIN, APROM}
3305 */
3306PDMBOTHCBDECL(int) pcnetIOPortAPromRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb)
3307{
3308 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3309 int rc = VINF_SUCCESS;
3310 STAM_PROFILE_ADV_START(&pThis->StatAPROMRead, a);
3311 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3312 RT_NOREF_PV(pvUser);
3313
3314 /* FreeBSD is accessing in dwords. */
3315 if (cb == 1)
3316 *pu32 = pcnetAPROMReadU8(pThis, Port);
3317 else if (cb == 2 && !BCR_DWIO(pThis))
3318 *pu32 = pcnetAPROMReadU8(pThis, Port)
3319 | (pcnetAPROMReadU8(pThis, Port + 1) << 8);
3320 else if (cb == 4 && BCR_DWIO(pThis))
3321 *pu32 = pcnetAPROMReadU8(pThis, Port)
3322 | (pcnetAPROMReadU8(pThis, Port + 1) << 8)
3323 | (pcnetAPROMReadU8(pThis, Port + 2) << 16)
3324 | (pcnetAPROMReadU8(pThis, Port + 3) << 24);
3325 else
3326 {
3327 Log(("#%d pcnetIOPortAPromRead: Port=%RTiop cb=%d BCR_DWIO !!\n", PCNET_INST_NR, Port, cb));
3328 rc = VERR_IOM_IOPORT_UNUSED;
3329 }
3330
3331 STAM_PROFILE_ADV_STOP(&pThis->StatAPROMRead, a);
3332 LogFlow(("#%d pcnetIOPortAPromRead: Port=%RTiop *pu32=%#RX32 cb=%d rc=%Rrc\n", PCNET_INST_NR, Port, *pu32, cb, rc));
3333 return rc;
3334}
3335
3336
3337/**
3338 * @callback_method_impl{FNIOMIOPORTOUT, APROM}
3339 */
3340PDMBOTHCBDECL(int) pcnetIOPortAPromWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
3341{
3342 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3343 int rc = VINF_SUCCESS;
3344 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3345 RT_NOREF_PV(pvUser);
3346
3347 if (cb == 1)
3348 {
3349 STAM_PROFILE_ADV_START(&pThis->StatAPROMWrite, a);
3350 pcnetAPROMWriteU8(pThis, Port, u32);
3351 STAM_PROFILE_ADV_STOP(&pThis->StatAPROMWrite, a);
3352 }
3353 else
3354 rc = PDMDevHlpDBGFStop(pDevIns, RT_SRC_POS, "Port=%#x cb=%d u32=%#x\n", Port, cb, u32);
3355
3356 LogFlow(("#%d pcnetIOPortAPromWrite: Port=%RTiop u32=%#RX32 cb=%d rc=%Rrc\n", PCNET_INST_NR, Port, u32, cb, rc));
3357 return rc;
3358}
3359
3360
3361/* -=-=-=-=-=- I/O Port access -=-=-=-=-=- */
3362
3363
3364static int pcnetIoportWriteU8(PPCNETSTATE pThis, uint32_t addr, uint32_t val)
3365{
3366 RT_NOREF1(val);
3367#ifdef PCNET_DEBUG_IO
3368 Log2(("#%d pcnetIoportWriteU8: addr=%#010x val=%#06x\n", PCNET_INST_NR, addr, val));
3369#endif
3370 if (RT_LIKELY(!BCR_DWIO(pThis)))
3371 {
3372 switch (addr & 0x0f)
3373 {
3374 case 0x04: /* RESET */
3375 break;
3376 }
3377 }
3378 else
3379 Log(("#%d pcnetIoportWriteU8: addr=%#010x val=%#06x BCR_DWIO !!\n", PCNET_INST_NR, addr, val));
3380
3381 return VINF_SUCCESS;
3382}
3383
3384static uint32_t pcnetIoportReadU8(PPCNETSTATE pThis, uint32_t addr, int *pRC)
3385{
3386 uint32_t val = UINT32_MAX;
3387
3388 *pRC = VINF_SUCCESS;
3389
3390 if (RT_LIKELY(!BCR_DWIO(pThis)))
3391 {
3392 switch (addr & 0x0f)
3393 {
3394 case 0x04: /* RESET */
3395 pcnetSoftReset(pThis);
3396 val = 0;
3397 break;
3398 }
3399 }
3400 else
3401 Log(("#%d pcnetIoportReadU8: addr=%#010x val=%#06x BCR_DWIO !!\n", PCNET_INST_NR, addr, val & 0xff));
3402
3403 pcnetUpdateIrq(pThis);
3404
3405#ifdef PCNET_DEBUG_IO
3406 Log2(("#%d pcnetIoportReadU8: addr=%#010x val=%#06x\n", PCNET_INST_NR, addr, val & 0xff));
3407#endif
3408 return val;
3409}
3410
3411static int pcnetIoportWriteU16(PPCNETSTATE pThis, uint32_t addr, uint32_t val)
3412{
3413 int rc = VINF_SUCCESS;
3414
3415#ifdef PCNET_DEBUG_IO
3416 Log2(("#%d pcnetIoportWriteU16: addr=%#010x val=%#06x\n", PCNET_INST_NR, addr, val));
3417#endif
3418 if (RT_LIKELY(!BCR_DWIO(pThis)))
3419 {
3420 switch (addr & 0x0f)
3421 {
3422 case 0x00: /* RDP */
3423 pcnetPollTimer(pThis);
3424 rc = pcnetCSRWriteU16(pThis, pThis->u32RAP, val);
3425 pcnetUpdateIrq(pThis);
3426 break;
3427 case 0x02: /* RAP */
3428 pThis->u32RAP = val & 0x7f;
3429 break;
3430 case 0x06: /* BDP */
3431 rc = pcnetBCRWriteU16(pThis, pThis->u32RAP, val);
3432 break;
3433 }
3434 }
3435 else
3436 Log(("#%d pcnetIoportWriteU16: addr=%#010x val=%#06x BCR_DWIO !!\n", PCNET_INST_NR, addr, val));
3437
3438 return rc;
3439}
3440
3441static uint32_t pcnetIoportReadU16(PPCNETSTATE pThis, uint32_t addr, int *pRC)
3442{
3443 uint32_t val = ~0U;
3444
3445 *pRC = VINF_SUCCESS;
3446
3447 if (RT_LIKELY(!BCR_DWIO(pThis)))
3448 {
3449 switch (addr & 0x0f)
3450 {
3451 case 0x00: /* RDP */
3452 /** @note if we're not polling, then the guest will tell us when to poll by setting TDMD in CSR0 */
3453 /** Polling is then useless here and possibly expensive. */
3454 if (!CSR_DPOLL(pThis))
3455 pcnetPollTimer(pThis);
3456
3457 val = pcnetCSRReadU16(pThis, pThis->u32RAP);
3458 if (pThis->u32RAP == 0) // pcnetUpdateIrq() already called by pcnetCSRReadU16()
3459 goto skip_update_irq;
3460 break;
3461 case 0x02: /* RAP */
3462 val = pThis->u32RAP;
3463 goto skip_update_irq;
3464 case 0x04: /* RESET */
3465 pcnetSoftReset(pThis);
3466 val = 0;
3467 break;
3468 case 0x06: /* BDP */
3469 val = pcnetBCRReadU16(pThis, pThis->u32RAP);
3470 break;
3471 }
3472 }
3473 else
3474 Log(("#%d pcnetIoportReadU16: addr=%#010x val=%#06x BCR_DWIO !!\n", PCNET_INST_NR, addr, val & 0xffff));
3475
3476 pcnetUpdateIrq(pThis);
3477
3478skip_update_irq:
3479#ifdef PCNET_DEBUG_IO
3480 Log2(("#%d pcnetIoportReadU16: addr=%#010x val=%#06x\n", PCNET_INST_NR, addr, val & 0xffff));
3481#endif
3482 return val;
3483}
3484
3485static int pcnetIoportWriteU32(PPCNETSTATE pThis, uint32_t addr, uint32_t val)
3486{
3487 int rc = VINF_SUCCESS;
3488
3489#ifdef PCNET_DEBUG_IO
3490 Log2(("#%d pcnetIoportWriteU32: addr=%#010x val=%#010x\n", PCNET_INST_NR,
3491 addr, val));
3492#endif
3493 if (RT_LIKELY(BCR_DWIO(pThis)))
3494 {
3495 switch (addr & 0x0f)
3496 {
3497 case 0x00: /* RDP */
3498 pcnetPollTimer(pThis);
3499 rc = pcnetCSRWriteU16(pThis, pThis->u32RAP, val & 0xffff);
3500 pcnetUpdateIrq(pThis);
3501 break;
3502 case 0x04: /* RAP */
3503 pThis->u32RAP = val & 0x7f;
3504 break;
3505 case 0x0c: /* BDP */
3506 rc = pcnetBCRWriteU16(pThis, pThis->u32RAP, val & 0xffff);
3507 break;
3508 }
3509 }
3510 else if ((addr & 0x0f) == 0)
3511 {
3512 /* switch device to dword I/O mode */
3513 pcnetBCRWriteU16(pThis, BCR_BSBC, pcnetBCRReadU16(pThis, BCR_BSBC) | 0x0080);
3514#ifdef PCNET_DEBUG_IO
3515 Log2(("device switched into dword i/o mode\n"));
3516#endif
3517 }
3518 else
3519 Log(("#%d pcnetIoportWriteU32: addr=%#010x val=%#010x !BCR_DWIO !!\n", PCNET_INST_NR, addr, val));
3520
3521 return rc;
3522}
3523
3524static uint32_t pcnetIoportReadU32(PPCNETSTATE pThis, uint32_t addr, int *pRC)
3525{
3526 uint32_t val = ~0U;
3527
3528 *pRC = VINF_SUCCESS;
3529
3530 if (RT_LIKELY(BCR_DWIO(pThis)))
3531 {
3532 switch (addr & 0x0f)
3533 {
3534 case 0x00: /* RDP */
3535 /** @note if we're not polling, then the guest will tell us when to poll by setting TDMD in CSR0 */
3536 /** Polling is then useless here and possibly expensive. */
3537 if (!CSR_DPOLL(pThis))
3538 pcnetPollTimer(pThis);
3539
3540 val = pcnetCSRReadU16(pThis, pThis->u32RAP);
3541 if (pThis->u32RAP == 0) // pcnetUpdateIrq() already called by pcnetCSRReadU16()
3542 goto skip_update_irq;
3543 break;
3544 case 0x04: /* RAP */
3545 val = pThis->u32RAP;
3546 goto skip_update_irq;
3547 case 0x08: /* RESET */
3548 pcnetSoftReset(pThis);
3549 val = 0;
3550 break;
3551 case 0x0c: /* BDP */
3552 val = pcnetBCRReadU16(pThis, pThis->u32RAP);
3553 break;
3554 }
3555 }
3556 else
3557 Log(("#%d pcnetIoportReadU32: addr=%#010x val=%#010x !BCR_DWIO !!\n", PCNET_INST_NR, addr, val));
3558 pcnetUpdateIrq(pThis);
3559
3560skip_update_irq:
3561#ifdef PCNET_DEBUG_IO
3562 Log2(("#%d pcnetIoportReadU32: addr=%#010x val=%#010x\n", PCNET_INST_NR, addr, val));
3563#endif
3564 return val;
3565}
3566
3567
3568/**
3569 * @callback_method_impl{FNIOMIOPORTIN}
3570 */
3571PDMBOTHCBDECL(int) pcnetIOPortRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb)
3572{
3573 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3574 int rc = VINF_SUCCESS;
3575 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatIORead), a);
3576 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3577 RT_NOREF_PV(pvUser);
3578
3579 switch (cb)
3580 {
3581 case 1: *pu32 = pcnetIoportReadU8(pThis, Port, &rc); break;
3582 case 2: *pu32 = pcnetIoportReadU16(pThis, Port, &rc); break;
3583 case 4: *pu32 = pcnetIoportReadU32(pThis, Port, &rc); break;
3584 default:
3585 rc = PDMDevHlpDBGFStop(pThis->CTX_SUFF(pDevIns), RT_SRC_POS,
3586 "pcnetIOPortRead: unsupported op size: offset=%#10x cb=%u\n",
3587 Port, cb);
3588 }
3589
3590 Log2(("#%d pcnetIOPortRead: Port=%RTiop *pu32=%#RX32 cb=%d rc=%Rrc\n", PCNET_INST_NR, Port, *pu32, cb, rc));
3591 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatIORead), a);
3592 return rc;
3593}
3594
3595
3596/**
3597 * @callback_method_impl{FNIOMIOPORTOUT}
3598 */
3599PDMBOTHCBDECL(int) pcnetIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
3600{
3601 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3602 int rc = VINF_SUCCESS;
3603 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatIOWrite), a);
3604 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3605 RT_NOREF_PV(pvUser);
3606
3607 switch (cb)
3608 {
3609 case 1: rc = pcnetIoportWriteU8(pThis, Port, u32); break;
3610 case 2: rc = pcnetIoportWriteU16(pThis, Port, u32); break;
3611 case 4: rc = pcnetIoportWriteU32(pThis, Port, u32); break;
3612 default:
3613 rc = PDMDevHlpDBGFStop(pThis->CTX_SUFF(pDevIns), RT_SRC_POS,
3614 "pcnetIOPortWrite: unsupported op size: offset=%#10x cb=%u\n",
3615 Port, cb);
3616 }
3617
3618 Log2(("#%d pcnetIOPortWrite: Port=%RTiop u32=%#RX32 cb=%d rc=%Rrc\n", PCNET_INST_NR, Port, u32, cb, rc));
3619 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatIOWrite), a);
3620 return rc;
3621}
3622
3623
3624/* -=-=-=-=-=- MMIO -=-=-=-=-=- */
3625
3626static void pcnetMMIOWriteU8(PPCNETSTATE pThis, RTGCPHYS addr, uint32_t val)
3627{
3628#ifdef PCNET_DEBUG_IO
3629 Log2(("#%d pcnetMMIOWriteU8: addr=%#010x val=%#04x\n", PCNET_INST_NR, addr, val));
3630#endif
3631 if (!(addr & 0x10))
3632 pcnetAPROMWriteU8(pThis, addr, val);
3633}
3634
3635static uint32_t pcnetMMIOReadU8(PPCNETSTATE pThis, RTGCPHYS addr)
3636{
3637 uint32_t val = ~0U;
3638 if (!(addr & 0x10))
3639 val = pcnetAPROMReadU8(pThis, addr);
3640#ifdef PCNET_DEBUG_IO
3641 Log2(("#%d pcnetMMIOReadU8: addr=%#010x val=%#04x\n", PCNET_INST_NR, addr, val & 0xff));
3642#endif
3643 return val;
3644}
3645
3646static void pcnetMMIOWriteU16(PPCNETSTATE pThis, RTGCPHYS addr, uint32_t val)
3647{
3648#ifdef PCNET_DEBUG_IO
3649 Log2(("#%d pcnetMMIOWriteU16: addr=%#010x val=%#06x\n", PCNET_INST_NR, addr, val));
3650#endif
3651 if (addr & 0x10)
3652 pcnetIoportWriteU16(pThis, addr & 0x0f, val);
3653 else
3654 {
3655 pcnetAPROMWriteU8(pThis, addr, val );
3656 pcnetAPROMWriteU8(pThis, addr+1, val >> 8);
3657 }
3658}
3659
3660static uint32_t pcnetMMIOReadU16(PPCNETSTATE pThis, RTGCPHYS addr)
3661{
3662 uint32_t val = ~0U;
3663 int rc;
3664
3665 if (addr & 0x10)
3666 val = pcnetIoportReadU16(pThis, addr & 0x0f, &rc);
3667 else
3668 {
3669 val = pcnetAPROMReadU8(pThis, addr+1);
3670 val <<= 8;
3671 val |= pcnetAPROMReadU8(pThis, addr);
3672 }
3673#ifdef PCNET_DEBUG_IO
3674 Log2(("#%d pcnetMMIOReadU16: addr=%#010x val = %#06x\n", PCNET_INST_NR, addr, val & 0xffff));
3675#endif
3676 return val;
3677}
3678
3679static void pcnetMMIOWriteU32(PPCNETSTATE pThis, RTGCPHYS addr, uint32_t val)
3680{
3681#ifdef PCNET_DEBUG_IO
3682 Log2(("#%d pcnetMMIOWriteU32: addr=%#010x val=%#010x\n", PCNET_INST_NR, addr, val));
3683#endif
3684 if (addr & 0x10)
3685 pcnetIoportWriteU32(pThis, addr & 0x0f, val);
3686 else
3687 {
3688 pcnetAPROMWriteU8(pThis, addr, val );
3689 pcnetAPROMWriteU8(pThis, addr+1, val >> 8);
3690 pcnetAPROMWriteU8(pThis, addr+2, val >> 16);
3691 pcnetAPROMWriteU8(pThis, addr+3, val >> 24);
3692 }
3693}
3694
3695static uint32_t pcnetMMIOReadU32(PPCNETSTATE pThis, RTGCPHYS addr)
3696{
3697 uint32_t val;
3698 int rc;
3699
3700 if (addr & 0x10)
3701 val = pcnetIoportReadU32(pThis, addr & 0x0f, &rc);
3702 else
3703 {
3704 val = pcnetAPROMReadU8(pThis, addr+3);
3705 val <<= 8;
3706 val |= pcnetAPROMReadU8(pThis, addr+2);
3707 val <<= 8;
3708 val |= pcnetAPROMReadU8(pThis, addr+1);
3709 val <<= 8;
3710 val |= pcnetAPROMReadU8(pThis, addr );
3711 }
3712#ifdef PCNET_DEBUG_IO
3713 Log2(("#%d pcnetMMIOReadU32: addr=%#010x val=%#010x\n", PCNET_INST_NR, addr, val));
3714#endif
3715 return val;
3716}
3717
3718
3719/**
3720 * @callback_method_impl{FNIOMMMIOREAD}
3721 */
3722PDMBOTHCBDECL(int) pcnetMMIORead(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
3723{
3724 PPCNETSTATE pThis = (PPCNETSTATE)pvUser;
3725 int rc = VINF_SUCCESS;
3726 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3727 RT_NOREF_PV(pDevIns);
3728
3729 /*
3730 * We have to check the range, because we're page aligning the MMIO.
3731 */
3732 if (GCPhysAddr - pThis->MMIOBase < PCNET_PNPMMIO_SIZE)
3733 {
3734 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatMMIORead), a);
3735 switch (cb)
3736 {
3737 case 1: *(uint8_t *)pv = pcnetMMIOReadU8 (pThis, GCPhysAddr); break;
3738 case 2: *(uint16_t *)pv = pcnetMMIOReadU16(pThis, GCPhysAddr); break;
3739 case 4: *(uint32_t *)pv = pcnetMMIOReadU32(pThis, GCPhysAddr); break;
3740 default:
3741 rc = PDMDevHlpDBGFStop(pThis->CTX_SUFF(pDevIns), RT_SRC_POS,
3742 "pcnetMMIORead: unsupported op size: address=%RGp cb=%u\n",
3743 GCPhysAddr, cb);
3744 }
3745 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatMMIORead), a);
3746 }
3747 else
3748 memset(pv, 0, cb);
3749
3750 LogFlow(("#%d pcnetMMIORead: pvUser=%p:{%.*Rhxs} cb=%d GCPhysAddr=%RGp rc=%Rrc\n",
3751 PCNET_INST_NR, pv, cb, pv, cb, GCPhysAddr, rc));
3752 return rc;
3753}
3754
3755
3756/**
3757 * @callback_method_impl{FNIOMMMIOWRITE}
3758 */
3759PDMBOTHCBDECL(int) pcnetMMIOWrite(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS GCPhysAddr, void const *pv, unsigned cb)
3760{
3761 PPCNETSTATE pThis = (PPCNETSTATE)pvUser;
3762 int rc = VINF_SUCCESS;
3763 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3764 RT_NOREF_PV(pDevIns);
3765
3766 /*
3767 * We have to check the range, because we're page aligning the MMIO stuff presently.
3768 */
3769 if (GCPhysAddr - pThis->MMIOBase < PCNET_PNPMMIO_SIZE)
3770 {
3771 STAM_PROFILE_ADV_START(&pThis->CTX_SUFF_Z(StatMMIOWrite), a);
3772 switch (cb)
3773 {
3774 case 1: pcnetMMIOWriteU8 (pThis, GCPhysAddr, *(uint8_t *)pv); break;
3775 case 2: pcnetMMIOWriteU16(pThis, GCPhysAddr, *(uint16_t *)pv); break;
3776 case 4: pcnetMMIOWriteU32(pThis, GCPhysAddr, *(uint32_t *)pv); break;
3777 default:
3778 rc = PDMDevHlpDBGFStop(pThis->CTX_SUFF(pDevIns), RT_SRC_POS,
3779 "pcnetMMIOWrite: unsupported op size: address=%RGp cb=%u\n",
3780 GCPhysAddr, cb);
3781 }
3782
3783 STAM_PROFILE_ADV_STOP(&pThis->CTX_SUFF_Z(StatMMIOWrite), a);
3784 }
3785 LogFlow(("#%d pcnetMMIOWrite: pvUser=%p:{%.*Rhxs} cb=%d GCPhysAddr=%RGp rc=%Rrc\n",
3786 PCNET_INST_NR, pv, cb, pv, cb, GCPhysAddr, rc));
3787 return rc;
3788}
3789
3790
3791#ifdef IN_RING3
3792
3793/* -=-=-=-=-=- Timer Callbacks -=-=-=-=-=- */
3794
3795/**
3796 * @callback_method_impl{FNTMTIMERDEV, Poll timer}
3797 */
3798static DECLCALLBACK(void) pcnetTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
3799{
3800 RT_NOREF(pDevIns, pTimer);
3801 PPCNETSTATE pThis = (PPCNETSTATE)pvUser;
3802 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3803
3804 STAM_PROFILE_ADV_START(&pThis->StatTimer, a);
3805 pcnetPollTimer(pThis);
3806 STAM_PROFILE_ADV_STOP(&pThis->StatTimer, a);
3807}
3808
3809
3810/**
3811 * @callback_method_impl{FNTMTIMERDEV,
3812 * Software interrupt timer callback function.}
3813 */
3814static DECLCALLBACK(void) pcnetTimerSoftInt(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
3815{
3816 RT_NOREF(pDevIns, pTimer);
3817 PPCNETSTATE pThis = (PPCNETSTATE)pvUser;
3818 Assert(PDMCritSectIsOwner(&pThis->CritSect));
3819
3820 pThis->aCSR[7] |= 0x0800; /* STINT */
3821 pcnetUpdateIrq(pThis);
3822 TMTimerSetNano(pThis->CTX_SUFF(pTimerSoftInt), 12800U * (pThis->aBCR[BCR_STVAL] & 0xffff));
3823}
3824
3825
3826/**
3827 * @callback_method_impl{FNTMTIMERDEV, Restore timer callback}
3828 *
3829 * This is only called when we restore a saved state and temporarily
3830 * disconnected the network link to inform the guest that network connections
3831 * should be considered lost.
3832 */
3833static DECLCALLBACK(void) pcnetTimerRestore(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
3834{
3835 RT_NOREF(pTimer, pvUser);
3836 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3837 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
3838 AssertReleaseRC(rc);
3839
3840 rc = VERR_GENERAL_FAILURE;
3841 if (pThis->cLinkDownReported <= PCNET_MAX_LINKDOWN_REPORTED)
3842 rc = TMTimerSetMillies(pThis->pTimerRestore, 1500);
3843 if (RT_FAILURE(rc))
3844 {
3845 pThis->fLinkTempDown = false;
3846 if (pThis->fLinkUp)
3847 {
3848 LogRel(("PCNet#%d: The link is back up again after the restore.\n",
3849 pDevIns->iInstance));
3850 Log(("#%d pcnetTimerRestore: Clearing ERR and CERR after load. cLinkDownReported=%d\n",
3851 pDevIns->iInstance, pThis->cLinkDownReported));
3852 pThis->aCSR[0] &= ~(RT_BIT(15) | RT_BIT(13)); /* ERR | CERR - probably not 100% correct either... */
3853 pThis->Led.Actual.s.fError = 0;
3854 }
3855 }
3856 else
3857 Log(("#%d pcnetTimerRestore: cLinkDownReported=%d, wait another 1500ms...\n",
3858 pDevIns->iInstance, pThis->cLinkDownReported));
3859
3860 PDMCritSectLeave(&pThis->CritSect);
3861}
3862
3863
3864/* -=-=-=-=-=- PCI Device Callbacks -=-=-=-=-=- */
3865
3866/**
3867 * @callback_method_impl{FNPCIIOREGIONMAP, For the PC-NET I/O Ports.}
3868 */
3869static DECLCALLBACK(int) pcnetIOPortMap(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t iRegion,
3870 RTGCPHYS GCPhysAddress, RTGCPHYS cb, PCIADDRESSSPACE enmType)
3871{
3872 RT_NOREF(iRegion, cb, enmType);
3873 int rc;
3874 RTIOPORT Port = (RTIOPORT)GCPhysAddress;
3875 PPCNETSTATE pThis = PCIDEV_2_PCNETSTATE(pPciDev);
3876
3877 Assert(enmType == PCI_ADDRESS_SPACE_IO);
3878 Assert(cb >= 0x20);
3879
3880 rc = PDMDevHlpIOPortRegister(pDevIns, Port, 0x10, 0, pcnetIOPortAPromWrite,
3881 pcnetIOPortAPromRead, NULL, NULL, "PCNet ARPOM");
3882 if (RT_FAILURE(rc))
3883 return rc;
3884 rc = PDMDevHlpIOPortRegister(pDevIns, Port + 0x10, 0x10, 0, pcnetIOPortWrite,
3885 pcnetIOPortRead, NULL, NULL, "PCNet");
3886 if (RT_FAILURE(rc))
3887 return rc;
3888
3889 if (pThis->fGCEnabled)
3890 {
3891 rc = PDMDevHlpIOPortRegisterRC(pDevIns, Port, 0x10, 0, "pcnetIOPortAPromWrite",
3892 "pcnetIOPortAPromRead", NULL, NULL, "PCNet aprom");
3893 if (RT_FAILURE(rc))
3894 return rc;
3895 rc = PDMDevHlpIOPortRegisterRC(pDevIns, Port + 0x10, 0x10, 0, "pcnetIOPortWrite",
3896 "pcnetIOPortRead", NULL, NULL, "PCNet");
3897 if (RT_FAILURE(rc))
3898 return rc;
3899 }
3900 if (pThis->fR0Enabled)
3901 {
3902 rc = PDMDevHlpIOPortRegisterR0(pDevIns, Port, 0x10, 0, "pcnetIOPortAPromWrite",
3903 "pcnetIOPortAPromRead", NULL, NULL, "PCNet aprom");
3904 if (RT_FAILURE(rc))
3905 return rc;
3906 rc = PDMDevHlpIOPortRegisterR0(pDevIns, Port + 0x10, 0x10, 0, "pcnetIOPortWrite",
3907 "pcnetIOPortRead", NULL, NULL, "PCNet");
3908 if (RT_FAILURE(rc))
3909 return rc;
3910 }
3911
3912 pThis->IOPortBase = Port;
3913 return VINF_SUCCESS;
3914}
3915
3916
3917/**
3918 * @callback_method_impl{FNPCIIOREGIONMAP, For the PC-Net MMIO region.}
3919 */
3920static DECLCALLBACK(int) pcnetMMIOMap(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t iRegion,
3921 RTGCPHYS GCPhysAddress, RTGCPHYS cb, PCIADDRESSSPACE enmType)
3922{
3923 RT_NOREF(iRegion, cb, enmType);
3924 PPCNETSTATE pThis = PCIDEV_2_PCNETSTATE(pPciDev);
3925 int rc;
3926
3927 Assert(enmType == PCI_ADDRESS_SPACE_MEM);
3928 Assert(cb >= PCNET_PNPMMIO_SIZE);
3929
3930 /* We use the assigned size here, because we only support page aligned MMIO ranges. */
3931 rc = PDMDevHlpMMIORegister(pDevIns, GCPhysAddress, cb, pThis,
3932 IOMMMIO_FLAGS_READ_PASSTHRU | IOMMMIO_FLAGS_WRITE_PASSTHRU,
3933 pcnetMMIOWrite, pcnetMMIORead, "PCNet");
3934 if (RT_FAILURE(rc))
3935 return rc;
3936 pThis->MMIOBase = GCPhysAddress;
3937 return rc;
3938}
3939
3940
3941/* -=-=-=-=-=- Debug Info Handler -=-=-=-=-=- */
3942
3943/**
3944 * @callback_method_impl{FNDBGFHANDLERDEV}
3945 */
3946static DECLCALLBACK(void) pcnetInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
3947{
3948 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
3949 bool fRcvRing = false;
3950 bool fXmtRing = false;
3951
3952 /*
3953 * Parse args.
3954 */
3955 if (pszArgs)
3956 {
3957 fRcvRing = strstr(pszArgs, "verbose") || strstr(pszArgs, "rcv");
3958 fXmtRing = strstr(pszArgs, "verbose") || strstr(pszArgs, "xmt");
3959 }
3960
3961 /*
3962 * Show info.
3963 */
3964 pHlp->pfnPrintf(pHlp,
3965 "pcnet #%d: port=%RTiop mmio=%RX32 mac-cfg=%RTmac %s%s%s\n",
3966 pDevIns->iInstance,
3967 pThis->IOPortBase, pThis->MMIOBase, &pThis->MacConfigured,
3968 pThis->fAm79C973 ? "Am79C973" : "Am79C970A", pThis->fGCEnabled ? " RC" : "", pThis->fR0Enabled ? " R0" : "");
3969
3970 PDMCritSectEnter(&pThis->CritSect, VERR_INTERNAL_ERROR); /* Take it here so we know why we're hanging... */
3971
3972 pHlp->pfnPrintf(pHlp,
3973 "CSR0=%#06x:\n",
3974 pThis->aCSR[0]);
3975
3976 pHlp->pfnPrintf(pHlp,
3977 "CSR1=%#06x:\n",
3978 pThis->aCSR[1]);
3979
3980 pHlp->pfnPrintf(pHlp,
3981 "CSR2=%#06x:\n",
3982 pThis->aCSR[2]);
3983
3984 pHlp->pfnPrintf(pHlp,
3985 "CSR3=%#06x: BSWP=%d EMBA=%d DXMT2PD=%d LAPPEN=%d DXSUFLO=%d IDONM=%d TINTM=%d RINTM=%d MERRM=%d MISSM=%d BABLM=%d\n",
3986 pThis->aCSR[3],
3987 !!(pThis->aCSR[3] & RT_BIT(2)), !!(pThis->aCSR[3] & RT_BIT(3)), !!(pThis->aCSR[3] & RT_BIT(4)), CSR_LAPPEN(pThis),
3988 CSR_DXSUFLO(pThis), !!(pThis->aCSR[3] & RT_BIT(8)), !!(pThis->aCSR[3] & RT_BIT(9)), !!(pThis->aCSR[3] & RT_BIT(10)),
3989 !!(pThis->aCSR[3] & RT_BIT(11)), !!(pThis->aCSR[3] & RT_BIT(12)), !!(pThis->aCSR[3] & RT_BIT(14)));
3990
3991 pHlp->pfnPrintf(pHlp,
3992 "CSR4=%#06x: JABM=%d JAB=%d TXSTRM=%d TXSTRT=%d RCVCOOM=%d RCVCCO=%d UINT=%d UINTCMD=%d\n"
3993 " MFCOM=%d MFCO=%d ASTRP_RCV=%d APAD_XMT=%d DPOLL=%d TIMER=%d EMAPLUS=%d EN124=%d\n",
3994 pThis->aCSR[4],
3995 !!(pThis->aCSR[4] & RT_BIT( 0)), !!(pThis->aCSR[4] & RT_BIT( 1)), !!(pThis->aCSR[4] & RT_BIT( 2)), !!(pThis->aCSR[4] & RT_BIT( 3)),
3996 !!(pThis->aCSR[4] & RT_BIT( 4)), !!(pThis->aCSR[4] & RT_BIT( 5)), !!(pThis->aCSR[4] & RT_BIT( 6)), !!(pThis->aCSR[4] & RT_BIT( 7)),
3997 !!(pThis->aCSR[4] & RT_BIT( 8)), !!(pThis->aCSR[4] & RT_BIT( 9)), !!(pThis->aCSR[4] & RT_BIT(10)), !!(pThis->aCSR[4] & RT_BIT(11)),
3998 !!(pThis->aCSR[4] & RT_BIT(12)), !!(pThis->aCSR[4] & RT_BIT(13)), !!(pThis->aCSR[4] & RT_BIT(14)), !!(pThis->aCSR[4] & RT_BIT(15)));
3999
4000 pHlp->pfnPrintf(pHlp,
4001 "CSR5=%#06x:\n",
4002 pThis->aCSR[5]);
4003
4004 pHlp->pfnPrintf(pHlp,
4005 "CSR6=%#06x: RLEN=%#x* TLEN=%#x* [* encoded]\n",
4006 pThis->aCSR[6],
4007 (pThis->aCSR[6] >> 8) & 0xf, (pThis->aCSR[6] >> 12) & 0xf);
4008
4009 pHlp->pfnPrintf(pHlp,
4010 "CSR8..11=%#06x,%#06x,%#06x,%#06x: LADRF=%#018llx\n",
4011 pThis->aCSR[8], pThis->aCSR[9], pThis->aCSR[10], pThis->aCSR[11],
4012 (uint64_t)(pThis->aCSR[ 8] & 0xffff)
4013 | (uint64_t)(pThis->aCSR[ 9] & 0xffff) << 16
4014 | (uint64_t)(pThis->aCSR[10] & 0xffff) << 32
4015 | (uint64_t)(pThis->aCSR[11] & 0xffff) << 48);
4016
4017 pHlp->pfnPrintf(pHlp,
4018 "CSR12..14=%#06x,%#06x,%#06x: PADR=%02x:%02x:%02x:%02x:%02x:%02x (Current MAC Address)\n",
4019 pThis->aCSR[12], pThis->aCSR[13], pThis->aCSR[14],
4020 pThis->aCSR[12] & 0xff,
4021 (pThis->aCSR[12] >> 8) & 0xff,
4022 pThis->aCSR[13] & 0xff,
4023 (pThis->aCSR[13] >> 8) & 0xff,
4024 pThis->aCSR[14] & 0xff,
4025 (pThis->aCSR[14] >> 8) & 0xff);
4026
4027 pHlp->pfnPrintf(pHlp,
4028 "CSR15=%#06x: DXR=%d DTX=%d LOOP=%d DXMTFCS=%d FCOLL=%d DRTY=%d INTL=%d PORTSEL=%d LTR=%d\n"
4029 " MENDECL=%d DAPC=%d DLNKTST=%d DRCVPV=%d DRCVBC=%d PROM=%d\n",
4030 pThis->aCSR[15],
4031 !!(pThis->aCSR[15] & RT_BIT( 0)), !!(pThis->aCSR[15] & RT_BIT( 1)), !!(pThis->aCSR[15] & RT_BIT( 2)), !!(pThis->aCSR[15] & RT_BIT( 3)),
4032 !!(pThis->aCSR[15] & RT_BIT( 4)), !!(pThis->aCSR[15] & RT_BIT( 5)), !!(pThis->aCSR[15] & RT_BIT( 6)), (pThis->aCSR[15] >> 7) & 3,
4033 !!(pThis->aCSR[15] & RT_BIT( 9)), !!(pThis->aCSR[15] & RT_BIT(10)), !!(pThis->aCSR[15] & RT_BIT(11)),
4034 !!(pThis->aCSR[15] & RT_BIT(12)), !!(pThis->aCSR[15] & RT_BIT(13)), !!(pThis->aCSR[15] & RT_BIT(14)), !!(pThis->aCSR[15] & RT_BIT(15)));
4035
4036 pHlp->pfnPrintf(pHlp,
4037 "CSR46=%#06x: POLL=%#06x (Poll Time Counter)\n",
4038 pThis->aCSR[46], pThis->aCSR[46] & 0xffff);
4039
4040 pHlp->pfnPrintf(pHlp,
4041 "CSR47=%#06x: POLLINT=%#06x (Poll Time Interval)\n",
4042 pThis->aCSR[47], pThis->aCSR[47] & 0xffff);
4043
4044 pHlp->pfnPrintf(pHlp,
4045 "CSR58=%#06x: SWSTYLE=%d %s SSIZE32=%d CSRPCNET=%d APERRENT=%d\n",
4046 pThis->aCSR[58],
4047 pThis->aCSR[58] & 0x7f,
4048 (pThis->aCSR[58] & 0x7f) == 0 ? "C-LANCE / PCnet-ISA"
4049 : (pThis->aCSR[58] & 0x7f) == 1 ? "ILACC"
4050 : (pThis->aCSR[58] & 0x7f) == 2 ? "PCNet-PCI II"
4051 : (pThis->aCSR[58] & 0x7f) == 3 ? "PCNet-PCI II controller"
4052 : "!!reserved!!",
4053 !!(pThis->aCSR[58] & RT_BIT(8)), !!(pThis->aCSR[58] & RT_BIT(9)), !!(pThis->aCSR[58] & RT_BIT(10)));
4054
4055 pHlp->pfnPrintf(pHlp,
4056 "CSR112=%04RX32: MFC=%04x (Missed receive Frame Count)\n",
4057 pThis->aCSR[112], pThis->aCSR[112] & 0xffff);
4058
4059 pHlp->pfnPrintf(pHlp,
4060 "CSR122=%04RX32: RCVALGN=%04x (Receive Frame Align)\n",
4061 pThis->aCSR[122], !!(pThis->aCSR[122] & RT_BIT(0)));
4062
4063 pHlp->pfnPrintf(pHlp,
4064 "CSR124=%04RX32: RPA=%04x (Runt Packet Accept)\n",
4065 pThis->aCSR[122], !!(pThis->aCSR[122] & RT_BIT(3)));
4066
4067
4068 /*
4069 * Dump the receive ring.
4070 */
4071 pHlp->pfnPrintf(pHlp,
4072 "RCVRL=%04x RCVRC=%04x GCRDRA=%RX32 \n"
4073 "CRDA=%08RX32 CRBA=%08RX32 CRBC=%03x CRST=%04x\n"
4074 "NRDA=%08RX32 NRBA=%08RX32 NRBC=%03x NRST=%04x\n"
4075 "NNRDA=%08RX32\n"
4076 ,
4077 CSR_RCVRL(pThis), CSR_RCVRC(pThis), pThis->GCRDRA,
4078 CSR_CRDA(pThis), CSR_CRBA(pThis), CSR_CRBC(pThis), CSR_CRST(pThis),
4079 CSR_NRDA(pThis), CSR_NRBA(pThis), CSR_NRBC(pThis), CSR_NRST(pThis),
4080 CSR_NNRD(pThis));
4081 if (fRcvRing)
4082 {
4083 const unsigned cb = 1 << pThis->iLog2DescSize;
4084 RTGCPHYS32 GCPhys = pThis->GCRDRA;
4085 unsigned i = CSR_RCVRL(pThis);
4086 while (i-- > 0)
4087 {
4088 RMD rmd;
4089 pcnetRmdLoad(pThis, &rmd, PHYSADDR(pThis, GCPhys), false);
4090 pHlp->pfnPrintf(pHlp,
4091 "%04x %RX32:%c%c RBADR=%08RX32 BCNT=%03x MCNT=%03x "
4092 "OWN=%d ERR=%d FRAM=%d OFLO=%d CRC=%d BUFF=%d STP=%d ENP=%d BPE=%d "
4093 "PAM=%d LAFM=%d BAM=%d RCC=%02x RPC=%02x ONES=%#x ZEROS=%d\n",
4094 i, GCPhys, i + 1 == CSR_RCVRC(pThis) ? '*' : ' ', GCPhys == CSR_CRDA(pThis) ? '*' : ' ',
4095 rmd.rmd0.rbadr, 4096 - rmd.rmd1.bcnt, rmd.rmd2.mcnt,
4096 rmd.rmd1.own, rmd.rmd1.err, rmd.rmd1.fram, rmd.rmd1.oflo, rmd.rmd1.crc, rmd.rmd1.buff,
4097 rmd.rmd1.stp, rmd.rmd1.enp, rmd.rmd1.bpe,
4098 rmd.rmd1.pam, rmd.rmd1.lafm, rmd.rmd1.bam, rmd.rmd2.rcc, rmd.rmd2.rpc,
4099 rmd.rmd1.ones, rmd.rmd2.zeros);
4100
4101 GCPhys += cb;
4102 }
4103 }
4104
4105 /*
4106 * Dump the transmit ring.
4107 */
4108 pHlp->pfnPrintf(pHlp,
4109 "XMTRL=%04x XMTRC=%04x GCTDRA=%08RX32 BADX=%08RX32\n"
4110 "PXDA=%08RX32 PXBC=%03x PXST=%04x\n"
4111 "CXDA=%08RX32 CXBA=%08RX32 CXBC=%03x CXST=%04x\n"
4112 "NXDA=%08RX32 NXBA=%08RX32 NXBC=%03x NXST=%04x\n"
4113 "NNXDA=%08RX32\n"
4114 ,
4115 CSR_XMTRL(pThis), CSR_XMTRC(pThis),
4116 pThis->GCTDRA, CSR_BADX(pThis),
4117 CSR_PXDA(pThis), CSR_PXBC(pThis), CSR_PXST(pThis),
4118 CSR_CXDA(pThis), CSR_CXBA(pThis), CSR_CXBC(pThis), CSR_CXST(pThis),
4119 CSR_NXDA(pThis), CSR_NXBA(pThis), CSR_NXBC(pThis), CSR_NXST(pThis),
4120 CSR_NNXD(pThis));
4121 if (fXmtRing)
4122 {
4123 const unsigned cb = 1 << pThis->iLog2DescSize;
4124 RTGCPHYS32 GCPhys = pThis->GCTDRA;
4125 unsigned i = CSR_XMTRL(pThis);
4126 while (i-- > 0)
4127 {
4128 TMD tmd;
4129 pcnetTmdLoad(pThis, &tmd, PHYSADDR(pThis, GCPhys), false);
4130 pHlp->pfnPrintf(pHlp,
4131 "%04x %RX32:%c%c TBADR=%08RX32 BCNT=%03x OWN=%d "
4132 "ERR=%d NOFCS=%d LTINT=%d ONE=%d DEF=%d STP=%d ENP=%d BPE=%d "
4133 "BUFF=%d UFLO=%d EXDEF=%d LCOL=%d LCAR=%d RTRY=%d TDR=%03x TRC=%#x ONES=%#x\n"
4134 ,
4135 i,
4136 GCPhys,
4137 i + 1 == CSR_XMTRC(pThis) ? '*' : ' ',
4138 GCPhys == CSR_CXDA(pThis) ? '*' : ' ',
4139 tmd.tmd0.tbadr,
4140 4096 - tmd.tmd1.bcnt,
4141 tmd.tmd1.own,
4142 tmd.tmd1.err,
4143 tmd.tmd1.nofcs,
4144 tmd.tmd1.ltint,
4145 tmd.tmd1.one,
4146 tmd.tmd1.def,
4147 tmd.tmd1.stp,
4148 tmd.tmd1.enp,
4149 tmd.tmd1.bpe,
4150 tmd.tmd2.buff,
4151 tmd.tmd2.uflo,
4152 tmd.tmd2.exdef,
4153 tmd.tmd2.lcol,
4154 tmd.tmd2.lcar,
4155 tmd.tmd2.rtry,
4156 tmd.tmd2.tdr,
4157 tmd.tmd2.trc,
4158 tmd.tmd1.ones);
4159
4160 GCPhys += cb;
4161 }
4162 }
4163
4164 PDMCritSectLeave(&pThis->CritSect);
4165}
4166
4167
4168/* -=-=-=-=-=- Helper(s) -=-=-=-=-=- */
4169
4170/**
4171 * Takes down the link temporarily if it's current status is up.
4172 *
4173 * This is used during restore and when replumbing the network link.
4174 *
4175 * The temporary link outage is supposed to indicate to the OS that all network
4176 * connections have been lost and that it for instance is appropriate to
4177 * renegotiate any DHCP lease.
4178 *
4179 * @param pThis The PCNet instance data.
4180 */
4181static void pcnetTempLinkDown(PPCNETSTATE pThis)
4182{
4183 if (pThis->fLinkUp)
4184 {
4185 pThis->fLinkTempDown = true;
4186 pThis->cLinkDownReported = 0;
4187 pThis->aCSR[0] |= RT_BIT(15) | RT_BIT(13); /* ERR | CERR (this is probably wrong) */
4188 pThis->Led.Asserted.s.fError = pThis->Led.Actual.s.fError = 1;
4189 int rc = TMTimerSetMillies(pThis->pTimerRestore, pThis->cMsLinkUpDelay);
4190 AssertRC(rc);
4191 }
4192}
4193
4194
4195/* -=-=-=-=-=- Saved State -=-=-=-=-=- */
4196
4197/**
4198 * Saves the configuration.
4199 *
4200 * @param pThis The PCNet instance data.
4201 * @param pSSM The saved state handle.
4202 */
4203static void pcnetSaveConfig(PPCNETSTATE pThis, PSSMHANDLE pSSM)
4204{
4205 SSMR3PutMem(pSSM, &pThis->MacConfigured, sizeof(pThis->MacConfigured));
4206 SSMR3PutBool(pSSM, pThis->fAm79C973); /* >= If version 0.8 */
4207 SSMR3PutU32(pSSM, pThis->u32LinkSpeed);
4208}
4209
4210
4211/**
4212 * @callback_method_impl{FNSSMDEVLIVEEXEC, Pass 0 only.}
4213 */
4214static DECLCALLBACK(int) pcnetLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
4215{
4216 RT_NOREF(uPass);
4217 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4218 pcnetSaveConfig(pThis, pSSM);
4219 return VINF_SSM_DONT_CALL_AGAIN;
4220}
4221
4222
4223/**
4224 * @callback_method_impl{FNSSMDEVSAVEPREP,
4225 * Serializes the receive thread, it may be working inside the critsect.}
4226 */
4227static DECLCALLBACK(int) pcnetSavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
4228{
4229 RT_NOREF(pSSM);
4230 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4231
4232 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4233 AssertRC(rc);
4234 PDMCritSectLeave(&pThis->CritSect);
4235
4236 return VINF_SUCCESS;
4237}
4238
4239
4240/**
4241 * @callback_method_impl{FNSSMDEVSAVEEXEC}
4242 */
4243static DECLCALLBACK(int) pcnetSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
4244{
4245 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4246
4247 SSMR3PutBool(pSSM, pThis->fLinkUp);
4248 SSMR3PutU32(pSSM, pThis->u32RAP);
4249 SSMR3PutS32(pSSM, pThis->iISR);
4250 SSMR3PutU32(pSSM, pThis->u32Lnkst);
4251 SSMR3PutBool(pSSM, false/* was ffPrivIfEnabled */); /* >= If version 0.9 */
4252 SSMR3PutBool(pSSM, pThis->fSignalRxMiss); /* >= If version 0.10 */
4253 SSMR3PutGCPhys32(pSSM, pThis->GCRDRA);
4254 SSMR3PutGCPhys32(pSSM, pThis->GCTDRA);
4255 SSMR3PutMem(pSSM, pThis->aPROM, sizeof(pThis->aPROM));
4256 SSMR3PutMem(pSSM, pThis->aCSR, sizeof(pThis->aCSR));
4257 SSMR3PutMem(pSSM, pThis->aBCR, sizeof(pThis->aBCR));
4258 SSMR3PutMem(pSSM, pThis->aMII, sizeof(pThis->aMII));
4259 SSMR3PutU16(pSSM, pThis->u16CSR0LastSeenByGuest);
4260 SSMR3PutU64(pSSM, pThis->u64LastPoll);
4261 pcnetSaveConfig(pThis, pSSM);
4262
4263 int rc = VINF_SUCCESS;
4264#ifndef PCNET_NO_POLLING
4265 rc = TMR3TimerSave(pThis->CTX_SUFF(pTimerPoll), pSSM);
4266 if (RT_FAILURE(rc))
4267 return rc;
4268#endif
4269 if (pThis->fAm79C973)
4270 rc = TMR3TimerSave(pThis->CTX_SUFF(pTimerSoftInt), pSSM);
4271 return rc;
4272}
4273
4274
4275/**
4276 * @callback_method_impl{FNSSMDEVLOADPREP},
4277 * Serializes the receive thread, it may be working inside the critsect.}
4278 */
4279static DECLCALLBACK(int) pcnetLoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
4280{
4281 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4282
4283 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4284 AssertRC(rc);
4285
4286 uint32_t uVer = SSMR3HandleVersion(pSSM);
4287 if ( uVer < VBOX_FULL_VERSION_MAKE(4, 3, 6)
4288 || ( uVer >= VBOX_FULL_VERSION_MAKE(4, 3, 51)
4289 && uVer < VBOX_FULL_VERSION_MAKE(4, 3, 53)))
4290 {
4291 /* older saved states contain the shared memory region which was never used for ages. */
4292 void *pvSharedMMIOR3;
4293 rc = PDMDevHlpMMIO2Register(pDevIns, &pThis->PciDev, 2, _512K, 0, (void **)&pvSharedMMIOR3, "PCNetSh");
4294 if (RT_FAILURE(rc))
4295 rc = PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
4296 N_("Failed to allocate the dummy shmem region for the PCNet device"));
4297 pThis->fSharedRegion = true;
4298 }
4299 PDMCritSectLeave(&pThis->CritSect);
4300
4301 return rc;
4302}
4303
4304
4305/**
4306 * @callback_method_impl{FNSSMDEVLOADEXEC}
4307 */
4308static DECLCALLBACK(int) pcnetLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
4309{
4310 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4311
4312 if ( SSM_VERSION_MAJOR_CHANGED(uVersion, PCNET_SAVEDSTATE_VERSION)
4313 || SSM_VERSION_MINOR(uVersion) < 7)
4314 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
4315
4316 if (uPass == SSM_PASS_FINAL)
4317 {
4318 /* restore data */
4319 SSMR3GetBool(pSSM, &pThis->fLinkUp);
4320 SSMR3GetU32(pSSM, &pThis->u32RAP);
4321 SSMR3GetS32(pSSM, &pThis->iISR);
4322 SSMR3GetU32(pSSM, &pThis->u32Lnkst);
4323 if ( SSM_VERSION_MAJOR(uVersion) > 0
4324 || SSM_VERSION_MINOR(uVersion) >= 9)
4325 {
4326 bool fPrivIfEnabled = false;
4327 SSMR3GetBool(pSSM, &fPrivIfEnabled);
4328 if (fPrivIfEnabled)
4329 {
4330 /* no longer implemented */
4331 LogRel(("PCNet#%d: Cannot enabling private interface!\n", PCNET_INST_NR));
4332 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
4333 }
4334 }
4335 if ( SSM_VERSION_MAJOR(uVersion) > 0
4336 || SSM_VERSION_MINOR(uVersion) >= 10)
4337 {
4338 SSMR3GetBool(pSSM, &pThis->fSignalRxMiss);
4339 }
4340 SSMR3GetGCPhys32(pSSM, &pThis->GCRDRA);
4341 SSMR3GetGCPhys32(pSSM, &pThis->GCTDRA);
4342 SSMR3GetMem(pSSM, &pThis->aPROM, sizeof(pThis->aPROM));
4343 SSMR3GetMem(pSSM, &pThis->aCSR, sizeof(pThis->aCSR));
4344 SSMR3GetMem(pSSM, &pThis->aBCR, sizeof(pThis->aBCR));
4345 SSMR3GetMem(pSSM, &pThis->aMII, sizeof(pThis->aMII));
4346 SSMR3GetU16(pSSM, &pThis->u16CSR0LastSeenByGuest);
4347 SSMR3GetU64(pSSM, &pThis->u64LastPoll);
4348 }
4349
4350 /* check config */
4351 RTMAC Mac;
4352 int rc = SSMR3GetMem(pSSM, &Mac, sizeof(Mac));
4353 AssertRCReturn(rc, rc);
4354 if ( memcmp(&Mac, &pThis->MacConfigured, sizeof(Mac))
4355 && (uPass == 0 || !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)) )
4356 LogRel(("PCNet#%u: The mac address differs: config=%RTmac saved=%RTmac\n", PCNET_INST_NR, &pThis->MacConfigured, &Mac));
4357
4358 bool fAm79C973;
4359 rc = SSMR3GetBool(pSSM, &fAm79C973);
4360 AssertRCReturn(rc, rc);
4361 if (pThis->fAm79C973 != fAm79C973)
4362 return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("The fAm79C973 flag differs: config=%RTbool saved=%RTbool"), pThis->fAm79C973, fAm79C973);
4363
4364 uint32_t u32LinkSpeed;
4365 rc = SSMR3GetU32(pSSM, &u32LinkSpeed);
4366 AssertRCReturn(rc, rc);
4367 if ( pThis->u32LinkSpeed != u32LinkSpeed
4368 && (uPass == 0 || !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)) )
4369 LogRel(("PCNet#%u: The mac link speed differs: config=%u saved=%u\n", PCNET_INST_NR, pThis->u32LinkSpeed, u32LinkSpeed));
4370
4371 if (uPass == SSM_PASS_FINAL)
4372 {
4373 /* restore timers and stuff */
4374#ifndef PCNET_NO_POLLING
4375 TMR3TimerLoad(pThis->CTX_SUFF(pTimerPoll), pSSM);
4376#endif
4377 if (pThis->fAm79C973)
4378 {
4379 if ( SSM_VERSION_MAJOR(uVersion) > 0
4380 || SSM_VERSION_MINOR(uVersion) >= 8)
4381 TMR3TimerLoad(pThis->CTX_SUFF(pTimerSoftInt), pSSM);
4382 }
4383
4384 pThis->iLog2DescSize = BCR_SWSTYLE(pThis)
4385 ? 4
4386 : 3;
4387 pThis->GCUpperPhys = BCR_SSIZE32(pThis)
4388 ? 0
4389 : (0xff00 & (uint32_t)pThis->aCSR[2]) << 16;
4390
4391 /* update promiscuous mode. */
4392 if (pThis->pDrvR3)
4393 pThis->pDrvR3->pfnSetPromiscuousMode(pThis->pDrvR3, CSR_PROM(pThis));
4394
4395#ifdef PCNET_NO_POLLING
4396 /* Enable physical monitoring again (!) */
4397 pcnetUpdateRingHandlers(pThis);
4398#endif
4399 /* Indicate link down to the guest OS that all network connections have
4400 been lost, unless we've been teleported here. */
4401 if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))
4402 pcnetTempLinkDown(pThis);
4403 }
4404
4405 return VINF_SUCCESS;
4406}
4407
4408/**
4409 * @callback_method_impl{FNSSMDEVLOADDONE}
4410 */
4411static DECLCALLBACK(int) pcnetLoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
4412{
4413 RT_NOREF(pSSM);
4414 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4415 int rc = VINF_SUCCESS;
4416 if (pThis->fSharedRegion)
4417 {
4418 /* drop this dummy region */
4419 rc = PDMDevHlpMMIOExDeregister(pDevIns, NULL, 2);
4420 pThis->fSharedRegion = false;
4421 }
4422 return rc;
4423}
4424
4425/* -=-=-=-=-=- PCNETSTATE::INetworkDown -=-=-=-=-=- */
4426
4427/**
4428 * Check if the device/driver can receive data now.
4429 *
4430 * Worker for pcnetNetworkDown_WaitReceiveAvail(). This must be called before
4431 * the pfnRecieve() method is called.
4432 *
4433 * @returns VBox status code.
4434 * @param pThis The PC-Net instance data.
4435 */
4436static int pcnetCanReceive(PPCNETSTATE pThis)
4437{
4438 int rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4439 AssertReleaseRC(rc);
4440
4441 rc = VERR_NET_NO_BUFFER_SPACE;
4442
4443 if (RT_LIKELY(!CSR_DRX(pThis) && !CSR_STOP(pThis) && !CSR_SPND(pThis)))
4444 {
4445 if (HOST_IS_OWNER(CSR_CRST(pThis)) && pThis->GCRDRA)
4446 pcnetRdtePoll(pThis);
4447
4448 if (RT_UNLIKELY(HOST_IS_OWNER(CSR_CRST(pThis))))
4449 {
4450 /** @todo Notify the guest _now_. Will potentially increase the interrupt load */
4451 if (pThis->fSignalRxMiss)
4452 pThis->aCSR[0] |= 0x1000; /* Set MISS flag */
4453 }
4454 else
4455 rc = VINF_SUCCESS;
4456 }
4457
4458 PDMCritSectLeave(&pThis->CritSect);
4459 return rc;
4460}
4461
4462
4463/**
4464 * @interface_method_impl{PDMINETWORKDOWN,pfnWaitReceiveAvail}
4465 */
4466static DECLCALLBACK(int) pcnetNetworkDown_WaitReceiveAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
4467{
4468 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkDown);
4469
4470 int rc = pcnetCanReceive(pThis);
4471 if (RT_SUCCESS(rc))
4472 return VINF_SUCCESS;
4473 if (RT_UNLIKELY(cMillies == 0))
4474 return VERR_NET_NO_BUFFER_SPACE;
4475
4476 rc = VERR_INTERRUPTED;
4477 ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, true);
4478 STAM_PROFILE_START(&pThis->StatRxOverflow, a);
4479 VMSTATE enmVMState;
4480 while (RT_LIKELY( (enmVMState = PDMDevHlpVMState(pThis->CTX_SUFF(pDevIns))) == VMSTATE_RUNNING
4481 || enmVMState == VMSTATE_RUNNING_LS))
4482 {
4483 int rc2 = pcnetCanReceive(pThis);
4484 if (RT_SUCCESS(rc2))
4485 {
4486 rc = VINF_SUCCESS;
4487 break;
4488 }
4489 LogFlow(("pcnetNetworkDown_WaitReceiveAvail: waiting cMillies=%u...\n", cMillies));
4490 /* Start the poll timer once which will remain active as long fMaybeOutOfSpace
4491 * is true -- even if (transmit) polling is disabled (CSR_DPOLL). */
4492 rc2 = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4493 AssertReleaseRC(rc2);
4494#ifndef PCNET_NO_POLLING
4495 pcnetPollTimerStart(pThis);
4496#endif
4497 PDMCritSectLeave(&pThis->CritSect);
4498 RTSemEventWait(pThis->hEventOutOfRxSpace, cMillies);
4499 }
4500 STAM_PROFILE_STOP(&pThis->StatRxOverflow, a);
4501 ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, false);
4502
4503 return rc;
4504}
4505
4506
4507/**
4508 * @interface_method_impl{PDMINETWORKDOWN,pfnReceive}
4509 */
4510static DECLCALLBACK(int) pcnetNetworkDown_Receive(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
4511{
4512 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkDown);
4513 int rc;
4514
4515 STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
4516 rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4517 AssertReleaseRC(rc);
4518
4519 /*
4520 * Check for the max ethernet frame size, taking the IEEE 802.1Q (VLAN) tag into
4521 * account. Note that the CRC Checksum is optional.
4522 * Ethernet frames consist of a 14-byte header [+ 4-byte vlan tag] + a 1500-byte body [+ 4-byte CRC].
4523 */
4524 if (RT_LIKELY( cb <= 1518
4525 || ( cb <= 1522
4526 && ((PCRTNETETHERHDR)pvBuf)->EtherType == RT_H2BE_U16_C(RTNET_ETHERTYPE_VLAN))))
4527 {
4528 bool fAddFCS = cb <= 1514
4529 || ( cb <= 1518
4530 && ((PCRTNETETHERHDR)pvBuf)->EtherType == RT_H2BE_U16_C(RTNET_ETHERTYPE_VLAN));
4531 if (cb > 70) /* unqualified guess */
4532 pThis->Led.Asserted.s.fReading = pThis->Led.Actual.s.fReading = 1;
4533 pcnetReceiveNoSync(pThis, (const uint8_t *)pvBuf, cb, fAddFCS);
4534 pThis->Led.Actual.s.fReading = 0;
4535 }
4536#ifdef LOG_ENABLED
4537 else
4538 {
4539 static bool s_fFirstBigFrameLoss = true;
4540 unsigned cbMaxFrame = ((PCRTNETETHERHDR)pvBuf)->EtherType == RT_H2BE_U16_C(RTNET_ETHERTYPE_VLAN)
4541 ? 1522 : 1518;
4542 if (s_fFirstBigFrameLoss)
4543 {
4544 s_fFirstBigFrameLoss = false;
4545 Log(("PCNet#%d: Received giant frame %zu, max %u. (Further giants will be reported at level5.)\n",
4546 PCNET_INST_NR, cb, cbMaxFrame));
4547 }
4548 else
4549 Log5(("PCNet#%d: Received giant frame %zu bytes, max %u.\n",
4550 PCNET_INST_NR, cb, cbMaxFrame));
4551 }
4552#endif /* LOG_ENABLED */
4553
4554 PDMCritSectLeave(&pThis->CritSect);
4555 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
4556
4557 return VINF_SUCCESS;
4558}
4559
4560
4561/**
4562 * @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
4563 */
4564static DECLCALLBACK(void) pcnetNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
4565{
4566 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkDown);
4567 pcnetXmitPending(pThis, true /*fOnWorkerThread*/);
4568}
4569
4570
4571/* -=-=-=-=-=- PCNETSTATE::INetworkConfig -=-=-=-=-=- */
4572
4573/**
4574 * @interface_method_impl{PDMINETWORKCONFIG,pfnGetMac}
4575 */
4576static DECLCALLBACK(int) pcnetGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
4577{
4578 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkConfig);
4579 memcpy(pMac, pThis->aPROM, sizeof(*pMac));
4580 return VINF_SUCCESS;
4581}
4582
4583
4584/**
4585 * @interface_method_impl{PDMINETWORKCONFIG,pfnGetLinkState}
4586 */
4587static DECLCALLBACK(PDMNETWORKLINKSTATE) pcnetGetLinkState(PPDMINETWORKCONFIG pInterface)
4588{
4589 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkConfig);
4590 if (pThis->fLinkUp && !pThis->fLinkTempDown)
4591 return PDMNETWORKLINKSTATE_UP;
4592 if (!pThis->fLinkUp)
4593 return PDMNETWORKLINKSTATE_DOWN;
4594 if (pThis->fLinkTempDown)
4595 return PDMNETWORKLINKSTATE_DOWN_RESUME;
4596 AssertMsgFailed(("Invalid link state!\n"));
4597 return PDMNETWORKLINKSTATE_INVALID;
4598}
4599
4600
4601/**
4602 * @interface_method_impl{PDMINETWORKCONFIG,pfnSetLinkState}
4603 */
4604static DECLCALLBACK(int) pcnetSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
4605{
4606 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, INetworkConfig);
4607 bool fLinkUp;
4608
4609 AssertMsgReturn(enmState > PDMNETWORKLINKSTATE_INVALID && enmState <= PDMNETWORKLINKSTATE_DOWN_RESUME,
4610 ("Invalid link state: enmState=%d\n", enmState), VERR_INVALID_PARAMETER);
4611
4612 if (enmState == PDMNETWORKLINKSTATE_DOWN_RESUME)
4613 {
4614 pcnetTempLinkDown(pThis);
4615 /*
4616 * Note that we do not notify the driver about the link state change because
4617 * the change is only temporary and can be disregarded from the driver's
4618 * point of view (see @bugref{7057}).
4619 */
4620 return VINF_SUCCESS;
4621 }
4622 /* has the state changed? */
4623 fLinkUp = enmState == PDMNETWORKLINKSTATE_UP;
4624 if (pThis->fLinkUp != fLinkUp)
4625 {
4626 pThis->fLinkUp = fLinkUp;
4627 if (fLinkUp)
4628 {
4629 /* Connect with a configured delay. */
4630 pThis->fLinkTempDown = true;
4631 pThis->cLinkDownReported = 0;
4632 pThis->aCSR[0] |= RT_BIT(15) | RT_BIT(13); /* ERR | CERR (this is probably wrong) */
4633 pThis->Led.Asserted.s.fError = pThis->Led.Actual.s.fError = 1;
4634 int rc = TMTimerSetMillies(pThis->pTimerRestore, pThis->cMsLinkUpDelay);
4635 AssertRC(rc);
4636 }
4637 else
4638 {
4639 /* disconnect */
4640 pThis->cLinkDownReported = 0;
4641 pThis->aCSR[0] |= RT_BIT(15) | RT_BIT(13); /* ERR | CERR (this is probably wrong) */
4642 pThis->Led.Asserted.s.fError = pThis->Led.Actual.s.fError = 1;
4643 }
4644 Assert(!PDMCritSectIsOwner(&pThis->CritSect));
4645 if (pThis->pDrvR3)
4646 pThis->pDrvR3->pfnNotifyLinkChanged(pThis->pDrvR3, enmState);
4647 }
4648 return VINF_SUCCESS;
4649}
4650
4651
4652/* -=-=-=-=-=- PCNETSTATE::ILeds (LUN#0) -=-=-=-=-=- */
4653
4654/**
4655 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
4656 */
4657static DECLCALLBACK(int) pcnetQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
4658{
4659 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, ILeds);
4660 if (iLUN == 0)
4661 {
4662 *ppLed = &pThis->Led;
4663 return VINF_SUCCESS;
4664 }
4665 return VERR_PDM_LUN_NOT_FOUND;
4666}
4667
4668
4669/* -=-=-=-=-=- PCNETSTATE::IBase (LUN#0) -=-=-=-=-=- */
4670
4671/**
4672 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
4673 */
4674static DECLCALLBACK(void *) pcnetQueryInterface(struct PDMIBASE *pInterface, const char *pszIID)
4675{
4676 PPCNETSTATE pThis = RT_FROM_MEMBER(pInterface, PCNETSTATE, IBase);
4677 Assert(&pThis->IBase == pInterface);
4678 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
4679 PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
4680 PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
4681 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
4682 return NULL;
4683}
4684
4685
4686/* -=-=-=-=-=- PDMDEVREG -=-=-=-=-=- */
4687
4688/**
4689 * @interface_method_impl{PDMDEVREG,pfnPowerOff}
4690 */
4691static DECLCALLBACK(void) pcnetPowerOff(PPDMDEVINS pDevIns)
4692{
4693 /* Poke thread waiting for buffer space. */
4694 pcnetWakeupReceive(pDevIns);
4695}
4696
4697
4698/**
4699 * @interface_method_impl{PDMDEVREG,pfnDetach}
4700 *
4701 * One port on the network card has been disconnected from the network.
4702 */
4703static DECLCALLBACK(void) pcnetDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
4704{
4705 RT_NOREF(fFlags);
4706 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4707 Log(("#%d pcnetDetach:\n", PCNET_INST_NR));
4708
4709 AssertLogRelReturnVoid(iLUN == 0);
4710
4711 PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4712
4713 /** @todo r=pritesh still need to check if i missed
4714 * to clean something in this function
4715 */
4716
4717 /*
4718 * Zero some important members.
4719 */
4720 pThis->pDrvBase = NULL;
4721 pThis->pDrvR3 = NULL;
4722 pThis->pDrvR0 = NIL_RTR0PTR;
4723 pThis->pDrvRC = NIL_RTRCPTR;
4724
4725 PDMCritSectLeave(&pThis->CritSect);
4726}
4727
4728
4729/**
4730 * @interface_method_impl{PDMDEVREG,pfnAttach}
4731 * One port on the network card has been connected to a network.
4732 */
4733static DECLCALLBACK(int) pcnetAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
4734{
4735 RT_NOREF(fFlags);
4736 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4737 LogFlow(("#%d pcnetAttach:\n", PCNET_INST_NR));
4738
4739 AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN);
4740
4741 PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
4742
4743 /*
4744 * Attach the driver.
4745 */
4746 int rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
4747 if (RT_SUCCESS(rc))
4748 {
4749 if (rc == VINF_NAT_DNS)
4750 {
4751#ifdef RT_OS_LINUX
4752 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
4753 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Please check your /etc/resolv.conf for <tt>nameserver</tt> entries. Either add one manually (<i>man resolv.conf</i>) or ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
4754#else
4755 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
4756 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
4757#endif
4758 }
4759 pThis->pDrvR3 = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
4760 AssertMsgStmt(pThis->pDrvR3, ("Failed to obtain the PDMINETWORKUP interface!\n"),
4761 rc = VERR_PDM_MISSING_INTERFACE_BELOW);
4762 pThis->pDrvR0 = PDMIBASER0_QUERY_INTERFACE(PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIBASER0), PDMINETWORKUP);
4763 pThis->pDrvRC = PDMIBASERC_QUERY_INTERFACE(PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIBASERC), PDMINETWORKUP);
4764 }
4765 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
4766 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
4767 {
4768 /* This should never happen because this function is not called
4769 * if there is no driver to attach! */
4770 Log(("#%d No attached driver!\n", PCNET_INST_NR));
4771 }
4772
4773 /*
4774 * Temporary set the link down if it was up so that the guest
4775 * will know that we have change the configuration of the
4776 * network card
4777 */
4778 if (RT_SUCCESS(rc))
4779 pcnetTempLinkDown(pThis);
4780
4781 PDMCritSectLeave(&pThis->CritSect);
4782 return rc;
4783
4784}
4785
4786
4787/**
4788 * @interface_method_impl{PDMDEVREG,pfnSuspend}
4789 */
4790static DECLCALLBACK(void) pcnetSuspend(PPDMDEVINS pDevIns)
4791{
4792 /* Poke thread waiting for buffer space. */
4793 pcnetWakeupReceive(pDevIns);
4794}
4795
4796
4797/**
4798 * @interface_method_impl{PDMDEVREG,pfnReset}
4799 */
4800static DECLCALLBACK(void) pcnetReset(PPDMDEVINS pDevIns)
4801{
4802 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4803 if (pThis->fLinkTempDown)
4804 {
4805 pThis->cLinkDownReported = 0x10000;
4806 TMTimerStop(pThis->pTimerRestore);
4807 pcnetTimerRestore(pDevIns, pThis->pTimerRestore, pThis);
4808 }
4809
4810 /** @todo How to flush the queues? */
4811 pcnetR3HardReset(pThis);
4812}
4813
4814
4815/**
4816 * @interface_method_impl{PDMDEVREG,pfnRelocate}
4817 */
4818static DECLCALLBACK(void) pcnetRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
4819{
4820 RT_NOREF(offDelta);
4821 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4822 pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
4823 pThis->pXmitQueueRC = PDMQueueRCPtr(pThis->pXmitQueueR3);
4824 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
4825#ifdef PCNET_NO_POLLING
4826 pThis->pfnEMInterpretInstructionRC += offDelta;
4827#else
4828 pThis->pTimerPollRC = TMTimerRCPtr(pThis->pTimerPollR3);
4829#endif
4830 if (pThis->fAm79C973)
4831 pThis->pTimerSoftIntRC = TMTimerRCPtr(pThis->pTimerSoftIntR3);
4832}
4833
4834
4835/**
4836 * @interface_method_impl{PDMDEVREG,pfnDestruct}
4837 */
4838static DECLCALLBACK(int) pcnetDestruct(PPDMDEVINS pDevIns)
4839{
4840 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4841 PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
4842
4843 if (PDMCritSectIsInitialized(&pThis->CritSect))
4844 {
4845 RTSemEventSignal(pThis->hEventOutOfRxSpace);
4846 RTSemEventDestroy(pThis->hEventOutOfRxSpace);
4847 pThis->hEventOutOfRxSpace = NIL_RTSEMEVENT;
4848 PDMR3CritSectDelete(&pThis->CritSect);
4849 }
4850 return VINF_SUCCESS;
4851}
4852
4853
4854/**
4855 * @interface_method_impl{PDMDEVREG,pfnConstruct}
4856 */
4857static DECLCALLBACK(int) pcnetConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
4858{
4859 PPCNETSTATE pThis = PDMINS_2_DATA(pDevIns, PPCNETSTATE);
4860 PPDMIBASE pBase;
4861 char szTmp[128];
4862 int rc;
4863
4864 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
4865 Assert(RT_ELEMENTS(pThis->aBCR) == BCR_MAX_RAP);
4866 Assert(RT_ELEMENTS(pThis->aMII) == MII_MAX_REG);
4867 Assert(sizeof(pThis->abLoopBuf) == RT_ALIGN_Z(sizeof(pThis->abLoopBuf), 16));
4868
4869 /*
4870 * Init what's required to make the destructor safe.
4871 */
4872 pThis->hEventOutOfRxSpace = NIL_RTSEMEVENT;
4873
4874 /*
4875 * Validate configuration.
4876 */
4877 if (!CFGMR3AreValuesValid(pCfg, "MAC\0" "CableConnected\0" "Am79C973\0" "LineSpeed\0" "GCEnabled\0" "R0Enabled\0" "PrivIfEnabled\0" "LinkUpDelay\0"))
4878 return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
4879 N_("Invalid configuration for pcnet device"));
4880
4881 /*
4882 * Read the configuration.
4883 */
4884 rc = CFGMR3QueryBytes(pCfg, "MAC", &pThis->MacConfigured, sizeof(pThis->MacConfigured));
4885 if (RT_FAILURE(rc))
4886 return PDMDEV_SET_ERROR(pDevIns, rc,
4887 N_("Configuration error: Failed to get the \"MAC\" value"));
4888 rc = CFGMR3QueryBoolDef(pCfg, "CableConnected", &pThis->fLinkUp, true);
4889 if (RT_FAILURE(rc))
4890 return PDMDEV_SET_ERROR(pDevIns, rc,
4891 N_("Configuration error: Failed to get the \"CableConnected\" value"));
4892
4893 rc = CFGMR3QueryBoolDef(pCfg, "Am79C973", &pThis->fAm79C973, false);
4894 if (RT_FAILURE(rc))
4895 return PDMDEV_SET_ERROR(pDevIns, rc,
4896 N_("Configuration error: Failed to get the \"Am79C973\" value"));
4897
4898 rc = CFGMR3QueryU32Def(pCfg, "LineSpeed", &pThis->u32LinkSpeed, 1000000); /* 1GBit/s (in kbps units)*/
4899 if (RT_FAILURE(rc))
4900 return PDMDEV_SET_ERROR(pDevIns, rc,
4901 N_("Configuration error: Failed to get the \"LineSpeed\" value"));
4902
4903#ifdef PCNET_GC_ENABLED
4904 rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &pThis->fGCEnabled, true);
4905 if (RT_FAILURE(rc))
4906 return PDMDEV_SET_ERROR(pDevIns, rc,
4907 N_("Configuration error: Failed to get the \"GCEnabled\" value"));
4908
4909 rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &pThis->fR0Enabled, true);
4910 if (RT_FAILURE(rc))
4911 return PDMDEV_SET_ERROR(pDevIns, rc,
4912 N_("Configuration error: Failed to get the \"R0Enabled\" value"));
4913
4914#else /* !PCNET_GC_ENABLED */
4915 pThis->fGCEnabled = false;
4916 pThis->fR0Enabled = false;
4917#endif /* !PCNET_GC_ENABLED */
4918
4919 rc = CFGMR3QueryU32Def(pCfg, "LinkUpDelay", (uint32_t*)&pThis->cMsLinkUpDelay, 5000); /* ms */
4920 if (RT_FAILURE(rc))
4921 return PDMDEV_SET_ERROR(pDevIns, rc,
4922 N_("Configuration error: Failed to get the value of 'LinkUpDelay'"));
4923 Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */
4924 if (pThis->cMsLinkUpDelay > 5000 || pThis->cMsLinkUpDelay < 100)
4925 {
4926 LogRel(("PCNet#%d WARNING! Link up delay is set to %u seconds!\n",
4927 iInstance, pThis->cMsLinkUpDelay / 1000));
4928 }
4929 Log(("#%d Link up delay is set to %u seconds\n",
4930 iInstance, pThis->cMsLinkUpDelay / 1000));
4931
4932
4933 /*
4934 * Initialize data (most of it anyway).
4935 */
4936 pThis->pDevInsR3 = pDevIns;
4937 pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
4938 pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
4939 pThis->Led.u32Magic = PDMLED_MAGIC;
4940 /* IBase */
4941 pThis->IBase.pfnQueryInterface = pcnetQueryInterface;
4942 /* INeworkPort */
4943 pThis->INetworkDown.pfnWaitReceiveAvail = pcnetNetworkDown_WaitReceiveAvail;
4944 pThis->INetworkDown.pfnReceive = pcnetNetworkDown_Receive;
4945 pThis->INetworkDown.pfnXmitPending = pcnetNetworkDown_XmitPending;
4946 /* INetworkConfig */
4947 pThis->INetworkConfig.pfnGetMac = pcnetGetMac;
4948 pThis->INetworkConfig.pfnGetLinkState = pcnetGetLinkState;
4949 pThis->INetworkConfig.pfnSetLinkState = pcnetSetLinkState;
4950 /* ILeds */
4951 pThis->ILeds.pfnQueryStatusLed = pcnetQueryStatusLed;
4952
4953 /* PCI Device */
4954 PCIDevSetVendorId(&pThis->PciDev, 0x1022);
4955 PCIDevSetDeviceId(&pThis->PciDev, 0x2000);
4956 pThis->PciDev.abConfig[0x04] = 0x07; /* command */
4957 pThis->PciDev.abConfig[0x05] = 0x00;
4958 pThis->PciDev.abConfig[0x06] = 0x80; /* status */
4959 pThis->PciDev.abConfig[0x07] = 0x02;
4960 pThis->PciDev.abConfig[0x08] = pThis->fAm79C973 ? 0x40 : 0x10; /* revision */
4961 pThis->PciDev.abConfig[0x09] = 0x00;
4962 pThis->PciDev.abConfig[0x0a] = 0x00; /* ethernet network controller */
4963 pThis->PciDev.abConfig[0x0b] = 0x02;
4964 pThis->PciDev.abConfig[0x0e] = 0x00; /* header_type */
4965
4966 pThis->PciDev.abConfig[0x10] = 0x01; /* IO Base */
4967 pThis->PciDev.abConfig[0x11] = 0x00;
4968 pThis->PciDev.abConfig[0x12] = 0x00;
4969 pThis->PciDev.abConfig[0x13] = 0x00;
4970 pThis->PciDev.abConfig[0x14] = 0x00; /* MMIO Base */
4971 pThis->PciDev.abConfig[0x15] = 0x00;
4972 pThis->PciDev.abConfig[0x16] = 0x00;
4973 pThis->PciDev.abConfig[0x17] = 0x00;
4974
4975 /* subsystem and subvendor IDs */
4976 pThis->PciDev.abConfig[0x2c] = 0x22; /* subsystem vendor id */
4977 pThis->PciDev.abConfig[0x2d] = 0x10;
4978 pThis->PciDev.abConfig[0x2e] = 0x00; /* subsystem id */
4979 pThis->PciDev.abConfig[0x2f] = 0x20;
4980 pThis->PciDev.abConfig[0x3d] = 1; /* interrupt pin 0 */
4981 pThis->PciDev.abConfig[0x3e] = 0x06;
4982 pThis->PciDev.abConfig[0x3f] = 0xff;
4983
4984 /*
4985 * We use our own critical section (historical reasons).
4986 */
4987 rc = PDMDevHlpCritSectInit(pDevIns, &pThis->CritSect, RT_SRC_POS, "PCNet#%u", iInstance);
4988 AssertRCReturn(rc, rc);
4989 rc = PDMDevHlpSetDeviceCritSect(pDevIns, &pThis->CritSect);
4990 AssertRCReturn(rc, rc);
4991
4992 rc = RTSemEventCreate(&pThis->hEventOutOfRxSpace);
4993 AssertRCReturn(rc, rc);
4994
4995 /*
4996 * Register the PCI device, its I/O regions, the timer and the saved state item.
4997 */
4998 rc = PDMDevHlpPCIRegister(pDevIns, &pThis->PciDev);
4999 if (RT_FAILURE(rc))
5000 return rc;
5001 rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0, PCNET_IOPORT_SIZE, PCI_ADDRESS_SPACE_IO, pcnetIOPortMap);
5002 if (RT_FAILURE(rc))
5003 return rc;
5004 rc = PDMDevHlpPCIIORegionRegister(pDevIns, 1, PCNET_PNPMMIO_SIZE, PCI_ADDRESS_SPACE_MEM, pcnetMMIOMap);
5005 if (RT_FAILURE(rc))
5006 return rc;
5007
5008#ifdef PCNET_NO_POLLING
5009 /*
5010 * Resolve the R0 and RC handlers.
5011 */
5012 rc = PDMR3LdrGetSymbolR0Lazy(PDMDevHlpGetVM(pDevIns), NULL, NULL, "EMInterpretInstruction", &pThis->pfnEMInterpretInstructionR0);
5013 if (RT_SUCCESS(rc))
5014 rc = PDMR3LdrGetSymbolRCLazy(PDMDevHlpGetVM(pDevIns), NULL, NULL, "EMInterpretInstruction", &pThis->pfnEMInterpretInstructionRC);
5015 AssertLogRelMsgRCReturn(rc, ("PDMR3LdrGetSymbolRCLazy(EMInterpretInstruction) -> %Rrc\n", rc), rc);
5016
5017 rc = PGMR3HandlerPhysicalTypeRegister(PDMDevHlpGetVM(pDevIns), PGMPHYSHANDLERKIND_WRITE,
5018 pcnetHandleRingWrite,
5019 g_DevicePCNet.szR0Mod, NULL, "pcnetHandleRingWritePf",
5020 g_DevicePCNet.szRCMod, NULL, "pcnetHandleRingWritePf",
5021 "PCNet ring write access handler",
5022 &pThis->hNoPollingHandlerType);
5023 AssertRCReturn(rc, rc);
5024
5025#else
5026 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, pcnetTimer, pThis,
5027 TMTIMER_FLAGS_NO_CRIT_SECT, "PCNet Poll Timer", &pThis->pTimerPollR3);
5028 if (RT_FAILURE(rc))
5029 return rc;
5030 pThis->pTimerPollR0 = TMTimerR0Ptr(pThis->pTimerPollR3);
5031 pThis->pTimerPollRC = TMTimerRCPtr(pThis->pTimerPollR3);
5032 TMR3TimerSetCritSect(pThis->pTimerPollR3, &pThis->CritSect);
5033#endif
5034 if (pThis->fAm79C973)
5035 {
5036 /* Software Interrupt timer */
5037 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, pcnetTimerSoftInt, pThis, /** @todo r=bird: the locking here looks bogus now with SMP... */
5038 TMTIMER_FLAGS_NO_CRIT_SECT, "PCNet SoftInt Timer", &pThis->pTimerSoftIntR3);
5039 if (RT_FAILURE(rc))
5040 return rc;
5041 pThis->pTimerSoftIntR0 = TMTimerR0Ptr(pThis->pTimerSoftIntR3);
5042 pThis->pTimerSoftIntRC = TMTimerRCPtr(pThis->pTimerSoftIntR3);
5043 TMR3TimerSetCritSect(pThis->pTimerSoftIntR3, &pThis->CritSect);
5044 }
5045 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, pcnetTimerRestore, pThis,
5046 TMTIMER_FLAGS_NO_CRIT_SECT, "PCNet Restore Timer", &pThis->pTimerRestore);
5047 if (RT_FAILURE(rc))
5048 return rc;
5049
5050 rc = PDMDevHlpSSMRegisterEx(pDevIns, PCNET_SAVEDSTATE_VERSION, sizeof(*pThis), NULL,
5051 NULL, pcnetLiveExec, NULL,
5052 pcnetSavePrep, pcnetSaveExec, NULL,
5053 pcnetLoadPrep, pcnetLoadExec, pcnetLoadDone);
5054 if (RT_FAILURE(rc))
5055 return rc;
5056
5057 /*
5058 * Create the transmit queue.
5059 */
5060 rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
5061 pcnetXmitQueueConsumer, true, "PCNet-Xmit", &pThis->pXmitQueueR3);
5062 if (RT_FAILURE(rc))
5063 return rc;
5064 pThis->pXmitQueueR0 = PDMQueueR0Ptr(pThis->pXmitQueueR3);
5065 pThis->pXmitQueueRC = PDMQueueRCPtr(pThis->pXmitQueueR3);
5066
5067 /*
5068 * Create the RX notifier signaller.
5069 */
5070 rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
5071 pcnetCanRxQueueConsumer, true, "PCNet-Rcv", &pThis->pCanRxQueueR3);
5072 if (RT_FAILURE(rc))
5073 return rc;
5074 pThis->pCanRxQueueR0 = PDMQueueR0Ptr(pThis->pCanRxQueueR3);
5075 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
5076
5077 /*
5078 * Register the info item.
5079 */
5080 RTStrPrintf(szTmp, sizeof(szTmp), "pcnet%d", pDevIns->iInstance);
5081 PDMDevHlpDBGFInfoRegister(pDevIns, szTmp, "PCNET info.", pcnetInfo);
5082
5083 /*
5084 * Attach status driver (optional).
5085 */
5086 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBase, &pBase, "Status Port");
5087 if (RT_SUCCESS(rc))
5088 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
5089 else if ( rc != VERR_PDM_NO_ATTACHED_DRIVER
5090 && rc != VERR_PDM_CFG_MISSING_DRIVER_NAME)
5091 {
5092 AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
5093 return rc;
5094 }
5095
5096 /*
5097 * Attach driver.
5098 */
5099 rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
5100 if (RT_SUCCESS(rc))
5101 {
5102 if (rc == VINF_NAT_DNS)
5103 {
5104#ifdef RT_OS_LINUX
5105 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
5106 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Please check your /etc/resolv.conf for <tt>nameserver</tt> entries. Either add one manually (<i>man resolv.conf</i>) or ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
5107#else
5108 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
5109 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
5110#endif
5111 }
5112 pThis->pDrvR3 = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
5113 AssertMsgReturn(pThis->pDrvR3, ("Failed to obtain the PDMINETWORKUP interface!\n"),
5114 VERR_PDM_MISSING_INTERFACE_BELOW);
5115 pThis->pDrvR0 = PDMIBASER0_QUERY_INTERFACE(PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIBASER0), PDMINETWORKUP);
5116 pThis->pDrvRC = PDMIBASERC_QUERY_INTERFACE(PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIBASERC), PDMINETWORKUP);
5117 }
5118 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
5119 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
5120 {
5121 /* No error! */
5122 Log(("No attached driver!\n"));
5123 }
5124 else
5125 return rc;
5126
5127 /*
5128 * Reset the device state. (Do after attaching.)
5129 */
5130 pcnetR3HardReset(pThis);
5131
5132 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Public/Net/PCNet%u/BytesReceived", iInstance);
5133 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Public/Net/PCNet%u/BytesTransmitted", iInstance);
5134
5135 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Devices/PCNet%d/ReceiveBytes", iInstance);
5136 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Devices/PCNet%d/TransmitBytes", iInstance);
5137
5138#ifdef VBOX_WITH_STATISTICS
5139 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatMMIOReadRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO reads in RZ", "/Devices/PCNet%d/MMIO/ReadRZ", iInstance);
5140 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatMMIOReadR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO reads in R3", "/Devices/PCNet%d/MMIO/ReadR3", iInstance);
5141 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatMMIOWriteRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO writes in RZ", "/Devices/PCNet%d/MMIO/WriteRZ", iInstance);
5142 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatMMIOWriteR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO writes in R3", "/Devices/PCNet%d/MMIO/WriteR3", iInstance);
5143 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatAPROMRead, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling APROM reads", "/Devices/PCNet%d/IO/APROMRead", iInstance);
5144 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatAPROMWrite, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling APROM writes", "/Devices/PCNet%d/IO/APROMWrite", iInstance);
5145 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatIOReadRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling IO reads in RZ", "/Devices/PCNet%d/IO/ReadRZ", iInstance);
5146 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatIOReadR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling IO reads in R3", "/Devices/PCNet%d/IO/ReadR3", iInstance);
5147 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatIOWriteRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling IO writes in RZ", "/Devices/PCNet%d/IO/WriteRZ", iInstance);
5148 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatIOWriteR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling IO writes in R3", "/Devices/PCNet%d/IO/WriteR3", iInstance);
5149 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTimer, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling Timer", "/Devices/PCNet%d/Timer", iInstance);
5150 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling receive", "/Devices/PCNet%d/Receive", iInstance);
5151 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows", "/Devices/PCNet%d/RxOverflow", iInstance);
5152 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_OCCURENCE, "Nr of RX overflow wakeups", "/Devices/PCNet%d/RxOverflowWakeup", iInstance);
5153 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitCase1, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Single descriptor transmit", "/Devices/PCNet%d/Transmit/Case1", iInstance);
5154 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitCase2, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Multi descriptor transmit", "/Devices/PCNet%d/Transmit/Case2", iInstance);
5155 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling transmits in RZ", "/Devices/PCNet%d/Transmit/TotalRZ", iInstance);
5156 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling transmits in R3", "/Devices/PCNet%d/Transmit/TotalR3", iInstance);
5157 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitSendRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet send transmit in RZ","/Devices/PCNet%d/Transmit/SendRZ", iInstance);
5158 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitSendR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet send transmit in R3","/Devices/PCNet%d/Transmit/SendR3", iInstance);
5159 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTxLenCalcRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TX len calc in RZ", "/Devices/PCNet%d/Transmit/LenCalcRZ", iInstance);
5160 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTxLenCalcR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TX len calc in R3", "/Devices/PCNet%d/Transmit/LenCalcR3", iInstance);
5161 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTdtePollRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TdtePoll in RZ", "/Devices/PCNet%d/TdtePollRZ", iInstance);
5162 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTdtePollR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TdtePoll in R3", "/Devices/PCNet%d/TdtePollR3", iInstance);
5163 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRdtePollRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet RdtePoll in RZ", "/Devices/PCNet%d/RdtePollRZ", iInstance);
5164 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRdtePollR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet RdtePoll in R3", "/Devices/PCNet%d/RdtePollR3", iInstance);
5165
5166 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTmdStoreRZ, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TmdStore in RZ", "/Devices/PCNet%d/TmdStoreRZ", iInstance);
5167 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTmdStoreR3, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TmdStore in R3", "/Devices/PCNet%d/TmdStoreR3", iInstance);
5168
5169 unsigned i;
5170 for (i = 0; i < RT_ELEMENTS(pThis->aStatXmitFlush) - 1; i++)
5171 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatXmitFlush[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitFlushIrq/%d", iInstance, i + 1);
5172 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatXmitFlush[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitFlushIrq/%d+", iInstance, i + 1);
5173
5174 for (i = 0; i < RT_ELEMENTS(pThis->aStatXmitChainCounts) - 1; i++)
5175 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatXmitChainCounts[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitChainCounts/%d", iInstance, i + 1);
5176 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStatXmitChainCounts[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitChainCounts/%d+", iInstance, i + 1);
5177
5178 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatXmitSkipCurrent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/Xmit/Skipped", iInstance);
5179
5180 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatInterrupt, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling interrupt checks", "/Devices/PCNet%d/UpdateIRQ", iInstance);
5181 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatPollTimer, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling poll timer", "/Devices/PCNet%d/PollTimer", iInstance);
5182 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatMIIReads, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of MII reads", "/Devices/PCNet%d/MIIReads", iInstance);
5183# ifdef PCNET_NO_POLLING
5184 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRCVRingWrite, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of receive ring writes", "/Devices/PCNet%d/Ring/RCVWrites", iInstance);
5185 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTXRingWrite, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of transmit ring writes", "/Devices/PCNet%d/Ring/TXWrites", iInstance);
5186 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteR3, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/R3/Writes", iInstance);
5187 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/R0/Writes", iInstance);
5188 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteRC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/RC/Writes", iInstance);
5189 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteFailedR3, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/R3/Failed", iInstance);
5190 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteFailedR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/R0/Failed", iInstance);
5191 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteFailedRC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/RC/Failed", iInstance);
5192 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteOutsideR3, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring","/Devices/PCNet%d/Ring/R3/Outside", iInstance);
5193 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteOutsideR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring","/Devices/PCNet%d/Ring/R0/Outside", iInstance);
5194 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRingWriteOutsideRC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring","/Devices/PCNet%d/Ring/RC/Outside", iInstance);
5195# endif /* PCNET_NO_POLLING */
5196#endif /* VBOX_WITH_STATISTICS */
5197
5198 return VINF_SUCCESS;
5199}
5200
5201
5202/**
5203 * The device registration structure.
5204 */
5205const PDMDEVREG g_DevicePCNet =
5206{
5207 /* u32Version */
5208 PDM_DEVREG_VERSION,
5209 /* szName */
5210 "pcnet",
5211 /* szRCMod */
5212#ifdef PCNET_GC_ENABLED
5213 "VBoxDDRC.rc",
5214 "VBoxDDR0.r0",
5215#else
5216 "",
5217 "",
5218#endif
5219 /* pszDescription */
5220 "AMD PC-Net II Ethernet controller.\n",
5221 /* fFlags */
5222#ifdef PCNET_GC_ENABLED
5223 PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0,
5224#else
5225 PDM_DEVREG_FLAGS_DEFAULT_BITS,
5226#endif
5227 /* fClass */
5228 PDM_DEVREG_CLASS_NETWORK,
5229 /* cMaxInstances */
5230 ~0U,
5231 /* cbInstance */
5232 sizeof(PCNETSTATE),
5233 /* pfnConstruct */
5234 pcnetConstruct,
5235 /* pfnDestruct */
5236 pcnetDestruct,
5237 /* pfnRelocate */
5238 pcnetRelocate,
5239 /* pfnMemSetup */
5240 NULL,
5241 /* pfnPowerOn */
5242 NULL,
5243 /* pfnReset */
5244 pcnetReset,
5245 /* pfnSuspend */
5246 pcnetSuspend,
5247 /* pfnResume */
5248 NULL,
5249 /* pfnAttach */
5250 pcnetAttach,
5251 /* pfnDetach */
5252 pcnetDetach,
5253 /* pfnQueryInterface. */
5254 NULL,
5255 /* pfnInitComplete. */
5256 NULL,
5257 /* pfnPowerOff. */
5258 pcnetPowerOff,
5259 /* pfnSoftReset */
5260 NULL,
5261 /* u32VersionEnd */
5262 PDM_DEVREG_VERSION
5263};
5264
5265#endif /* IN_RING3 */
5266#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
5267
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