DevPCNet.cpp@ 2598

Last change on this file since 2598 was 2598, checked in by vboxsync, 18 years ago
Added a bunch of pci register defines and created a couple of the setters/getters that should be created to make that pci config setup easier to read.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 167.8 KB

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1	/** @file
2	*
3	* VBox network devices:
4	* AMD PC-Net II (Am79C970A + Am79C973) Ethernet Controller
5	*/
6
7	/*
8	* Copyright (C) 2006 InnoTek Systemberatung GmbH
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License as published by the Free Software Foundation,
14	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
15	* distribution. VirtualBox OSE is distributed in the hope that it will
16	* be useful, but WITHOUT ANY WARRANTY of any kind.
17	*
18	* If you received this file as part of a commercial VirtualBox
19	* distribution, then only the terms of your commercial VirtualBox
20	* license agreement apply instead of the previous paragraph.
21	*
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	/* This software was written to be compatible with the specification:
50	* AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
51	* AMD Publication# 19436 Rev:E Amendment/0 Issue Date: June 2000
52	*/
53
54	/*******************************************************************************
55	* Header Files *
56	*******************************************************************************/
57	#define LOG_GROUP LOG_GROUP_DEV_PCNET
58	#include <VBox/err.h>
59	#include <VBox/log.h>
60	#include <VBox/mm.h>
61	#include <VBox/pdm.h>
62	#include <VBox/pgm.h>
63	#include <VBox/stam.h>
64	#include <VBox/vm.h> /* for VM_IS_EMT */
65	#include <iprt/asm.h>
66	#include <iprt/assert.h>
67	#include <iprt/critsect.h>
68	#include <iprt/string.h>
69	#include <iprt/time.h>
70	#ifdef IN_RING3
71	#include <iprt/mem.h>
72	#include <iprt/semaphore.h>
73	#endif
74
75	#include "Builtins.h"
76	#include "vl_vbox.h"
77
78	/* Enable this to catch writes to the ring descriptors instead of using excessive polling */
79	/* #define PCNET_NO_POLLING */
80
81	/* Enable to handle frequent io reads in the guest context */
82	#define PCNET_GC_ENABLED
83
84	#ifdef __GNUC__
85	#define PACKED __attribute__ ((packed))
86	#else
87	#define PACKED
88	#endif
89
90	#if 0
91	#define LOG_REGISTER(a) LogRel(a)
92	#else
93	#define LOG_REGISTER(a)
94	#endif
95	#if 0
96	#define LOG_PACKET(name, buf, count) LogPkt(name, buf, count)
97	#define LOG_PACKETS
98	#else
99	#define LOG_PACKET(name, buf, count)
100	#undef LOG_PACKETS
101	#endif
102
103	#if defined(LOG_ENABLED)
104	#define PCNET_DEBUG_IO
105	#define PCNET_DEBUG_BCR
106	#define PCNET_DEBUG_CSR
107	#define PCNET_DEBUG_RMD
108	#define PCNET_DEBUG_TMD
109	#define PCNET_DEBUG_MATCH
110	#define PCNET_DEBUG_MII
111	#endif
112
113	#define PCNET_IOPORT_SIZE 0x20
114	#define PCNET_PNPMMIO_SIZE 0x20
115
116	#define PCNET_SAVEDSTATE_VERSION 6
117
118	#define BCR_MAX_RAP 50
119	#define MII_MAX_REG 32
120	#define CSR_MAX_REG 128
121
122	/* Maximum number of times we report a link down to the guest (failure to send frame) */
123	#define PCNET_MAX_LINKDOWN_REPORTED 3
124
125	/* Frame cache */
126	typedef struct PCNETFRAME
127	{
128	/** The current frame size. Starts at -1. Only the top frame can be expanded. */
129	int32_t cb;
130	#if HC_ARCH_BITS == 64
131	uint32_t Alignment;
132	#endif
133	/** The virtual address of the frame (copied or direct pointer) */
134	RTR3PTR pvBuf;
135	} PCNETFRAME;
136	/* Pointer to PCNETFRAME */
137	typedef PCNETFRAME *PPCNETFRAME;
138
139	typedef struct PCNetState_st PCNetState;
140
141	struct PCNetState_st
142	{
143	PCIDEVICE PciDev;
144	#ifndef PCNET_NO_POLLING
145	/** Poll timer (address for host context) */
146	PTMTIMERHC pTimerPollHC;
147	/** Poll timer (address for guest context) */
148	PTMTIMERGC pTimerPollGC;
149	#endif
150	/** Register Address Pointer */
151	uint32_t u32RAP;
152	/** Internal interrupt service */
153	int32_t iISR;
154	/** ??? */
155	uint32_t u32Lnkst;
156	/** Address of the RX descriptor table (ring). Loaded at init. */
157	RTGCPHYS GCRDRA;
158	/** Address of the TX descriptor table (ring). Loaded at init. */
159	RTGCPHYS GCTDRA;
160	uint8_t aPROM[16];
161	uint16_t aCSR[CSR_MAX_REG];
162	uint16_t aBCR[BCR_MAX_RAP];
163	uint16_t aMII[MII_MAX_REG];
164	uint16_t u16CSR0LastSeenByGuest;
165	uint16_t Alignment0[HC_ARCH_BITS == 32 ? 2 : 4];
166	/** Last time we polled the queues */
167	uint64_t u64LastPoll;
168
169	/** Array of frames. */
170	PCNETFRAME SendFrame;
171	/** The xmit buffer. */
172	uint8_t abSendBuf[4096];
173	/** The recv buffer. */
174	uint8_t abRecvBuf[4096];
175
176	/** Pending send packet counter. */
177	uint32_t cPendingSends;
178
179	/** Size of a RX/TX descriptor (8 or 16 bytes according to SWSTYLE */
180	int iLog2DescSize;
181	/** Bits 16..23 in 16-bit mode */
182	RTGCPHYS GCUpperPhys;
183
184	/** Transmit signaller */
185	GCPTRTYPE(PPDMQUEUE) pXmitQueueGC;
186	HCPTRTYPE(PPDMQUEUE) pXmitQueueHC;
187
188	/** Receive signaller */
189	HCPTRTYPE(PPDMQUEUE) pCanRxQueueHC;
190	GCPTRTYPE(PPDMQUEUE) pCanRxQueueGC;
191	/** Pointer to the device instance. */
192	GCPTRTYPE(PPDMDEVINS) pDevInsGC;
193	/** Pointer to the device instance. */
194	HCPTRTYPE(PPDMDEVINS) pDevInsHC;
195	/** Restore timer.
196	* This is used to disconnect and reconnect the link after a restore. */
197	PTMTIMERHC pTimerRestore;
198	/** Pointer to the connector of the attached network driver. */
199	HCPTRTYPE(PPDMINETWORKCONNECTOR) pDrv;
200	/** Pointer to the attached network driver. */
201	HCPTRTYPE(PPDMIBASE) pDrvBase;
202	/** The base interface. */
203	PDMIBASE IBase;
204	/** The network port interface. */
205	PDMINETWORKPORT INetworkPort;
206	/** The network config port interface. */
207	PDMINETWORKCONFIG INetworkConfig;
208	/** Base address of the MMIO region. */
209	RTGCPHYS MMIOBase;
210	/** Base port of the I/O space region. */
211	RTIOPORT IOPortBase;
212	/** If set the link is currently up. */
213	bool fLinkUp;
214	/** If set the link is temporarily down because of a saved state load. */
215	bool fLinkTempDown;
216	/** This flag is set on SavePrep to prevent altering of memory after pgmR3Save() was called */
217	bool fSaving;
218
219	/** Number of times we've reported the link down. */
220	RTUINT cLinkDownReported;
221	/** The configured MAC address. */
222	PDMMAC MacConfigured;
223
224	/** The LED. */
225	PDMLED Led;
226	/** The LED ports. */
227	PDMILEDPORTS ILeds;
228	/** Partner of ILeds. */
229	HCPTRTYPE(PPDMILEDCONNECTORS) pLedsConnector;
230
231	/** Async send thread */
232	RTSEMEVENT hSendEventSem;
233	RTTHREAD hSendThread;
234
235	/** Access critical section. */
236	PDMCRITSECT CritSect;
237
238	#ifdef PCNET_NO_POLLING
239	RTGCPHYS TDRAPhysOld;
240	uint32_t cbTDRAOld;
241
242	RTGCPHYS RDRAPhysOld;
243	uint32_t cbRDRAOld;
244
245	DECLGCCALLBACKMEMBER(int, pfnEMInterpretInstructionGC, (PVM pVM, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize));
246	DECLR0CALLBACKMEMBER(int, pfnEMInterpretInstructionR0, (PVM pVM, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize));
247	#endif
248
249	bool fGCEnabled;
250	bool fR0Enabled;
251	bool fAm79C973;
252	bool afAlignment[5];
253
254	#ifdef VBOX_WITH_STATISTICS
255	STAMPROFILEADV StatMMIOReadGC;
256	STAMPROFILEADV StatMMIOReadHC;
257	STAMPROFILEADV StatMMIOWriteGC;
258	STAMPROFILEADV StatMMIOWriteHC;
259	STAMPROFILEADV StatAPROMRead;
260	STAMPROFILEADV StatAPROMWrite;
261	STAMPROFILEADV StatIOReadGC;
262	STAMPROFILEADV StatIOReadHC;
263	STAMPROFILEADV StatIOWriteGC;
264	STAMPROFILEADV StatIOWriteHC;
265	STAMPROFILEADV StatTimer;
266	STAMPROFILEADV StatReceive;
267	STAMPROFILEADV StatTransmit;
268	STAMPROFILEADV StatTransmitSend;
269	STAMPROFILEADV StatTdtePollGC;
270	STAMPROFILEADV StatTdtePollHC;
271	STAMPROFILEADV StatTmdStoreGC;
272	STAMPROFILEADV StatTmdStoreHC;
273	STAMPROFILEADV StatRdtePollGC;
274	STAMPROFILEADV StatRdtePollHC;
275	STAMCOUNTER aStatXmitFlush[16];
276	STAMCOUNTER aStatXmitChainCounts[16];
277	STAMCOUNTER StatXmitSkipCurrent;
278	STAMPROFILEADV StatInterrupt;
279	STAMPROFILEADV StatPollTimer;
280	STAMCOUNTER StatMIIReads;
281	# ifdef PCNET_NO_POLLING
282	STAMCOUNTER StatRCVRingWrite;
283	STAMCOUNTER StatTXRingWrite;
284	STAMCOUNTER StatRingWriteHC;
285	STAMCOUNTER StatRingWriteR0;
286	STAMCOUNTER StatRingWriteGC;
287
288	STAMCOUNTER StatRingWriteFailedHC;
289	STAMCOUNTER StatRingWriteFailedR0;
290	STAMCOUNTER StatRingWriteFailedGC;
291
292	STAMCOUNTER StatRingWriteOutsideRangeHC;
293	STAMCOUNTER StatRingWriteOutsideRangeR0;
294	STAMCOUNTER StatRingWriteOutsideRangeGC;
295	# endif
296	#endif /* VBOX_WITH_STATISTICS */
297	};
298
299	#define PCNETSTATE_2_DEVINS(pPCNet) ( (pPCNet)->CTXSUFF(pDevIns) )
300	#define PCIDEV_2_PCNETSTATE(pPciDev) ( (PCNetState *)(pPciDev) )
301
302	/* BUS CONFIGURATION REGISTERS */
303	#define BCR_MSRDA 0
304	#define BCR_MSWRA 1
305	#define BCR_MC 2
306	#define BCR_RESERVED3 3
307	#define BCR_LNKST 4
308	#define BCR_LED1 5
309	#define BCR_LED2 6
310	#define BCR_LED3 7
311	#define BCR_RESERVED8 8
312	#define BCR_FDC 9
313	/* 10 - 15 = reserved */
314	#define BCR_IOBASEL 16 /* Reserved */
315	#define BCR_IOBASEU 16 /* Reserved */
316	#define BCR_BSBC 18
317	#define BCR_EECAS 19
318	#define BCR_SWS 20
319	#define BCR_INTCON 21 /* Reserved */
320	#define BCR_PLAT 22
321	#define BCR_PCISID 23
322	#define BCR_PCISVID 24
323	#define BCR_SRAMSIZ 25
324	#define BCR_SRAMB 26
325	#define BCR_SRAMIC 27
326	#define BCR_EBADDRL 28
327	#define BCR_EBADDRU 29
328	#define BCR_EBD 30
329	#define BCR_STVAL 31
330	#define BCR_MIICAS 32
331	#define BCR_MIIADDR 33
332	#define BCR_MIIMDR 34
333	#define BCR_PCIVID 35
334	#define BCR_PMC_A 36
335	#define BCR_DATA0 37
336	#define BCR_DATA1 38
337	#define BCR_DATA2 39
338	#define BCR_DATA3 40
339	#define BCR_DATA4 41
340	#define BCR_DATA5 42
341	#define BCR_DATA6 43
342	#define BCR_DATA7 44
343	#define BCR_PMR1 45
344	#define BCR_PMR2 46
345	#define BCR_PMR3 47
346
347	#define BCR_DWIO(S) !!((S)->aBCR[BCR_BSBC] & 0x0080)
348	#define BCR_SSIZE32(S) !!((S)->aBCR[BCR_SWS ] & 0x0100)
349	#define BCR_SWSTYLE(S) ((S)->aBCR[BCR_SWS ] & 0x00FF)
350
351	#define CSR_INIT(S) !!((S)->aCSR[0] & 0x0001) /*< Init assertion /
352	#define CSR_STRT(S) !!((S)->aCSR[0] & 0x0002) /*< Start assertion /
353	#define CSR_STOP(S) !!((S)->aCSR[0] & 0x0004) /*< Stop assertion /
354	#define CSR_TDMD(S) !!((S)->aCSR[0] & 0x0008) /**< Transmit demand. (perform xmit poll now
355	(readable, settable, not clearable) */
356	#define CSR_TXON(S) !!((S)->aCSR[0] & 0x0010) /*< Transmit on (readonly) /
357	#define CSR_RXON(S) !!((S)->aCSR[0] & 0x0020) /*< Receive On /
358	#define CSR_INEA(S) !!((S)->aCSR[0] & 0x0040) /*< Interrupt Enable /
359	#define CSR_LAPPEN(S) !!((S)->aCSR[3] & 0x0020) /*< Look Ahead Packet Processing Enable /
360	#define CSR_DXSUFLO(S) !!((S)->aCSR[3] & 0x0040) /**< Disable Transmit Stop on
361	Underflow error */
362	#define CSR_ASTRP_RCV(S) !!((S)->aCSR[4] & 0x0400) /*< Auto Strip Receive /
363	#define CSR_DPOLL(S) !!((S)->aCSR[4] & 0x1000) /*< Disable Transmit Polling /
364	#define CSR_SPND(S) !!((S)->aCSR[5] & 0x0001) /*< Suspend /
365	#define CSR_LTINTEN(S) !!((S)->aCSR[5] & 0x4000) /*< Last Transmit Interrupt Enable /
366	#define CSR_TOKINTD(S) !!((S)->aCSR[5] & 0x8000) /*< Transmit OK Interrupt Disable /
367	#define CSR_DRX(S) !!((S)->aCSR[15] & 0x0001) /*< Disable Receiver /
368	#define CSR_DTX(S) !!((S)->aCSR[15] & 0x0002) /*< Disable Transmit /
369	#define CSR_LOOP(S) !!((S)->aCSR[15] & 0x0004) /*< Loopback Enable /
370	#define CSR_DRCVPA(S) !!((S)->aCSR[15] & 0x2000) /*< Disable Receive Physical Address /
371	#define CSR_DRCVBC(S) !!((S)->aCSR[15] & 0x4000) /*< Disable Receive Broadcast /
372	#define CSR_PROM(S) !!((S)->aCSR[15] & 0x8000) /*< Promiscuous Mode /
373
374	#if !defined(__X86__) && !defined(__AMD64__)
375	#error fix macros (and more in this file) for big-endian machines
376	#endif
377
378	#define CSR_IADR(S) ((uint32_t)((S)->aCSR + 1)) /*< Initialization Block Address /
379	#define CSR_CRBA(S) ((uint32_t)((S)->aCSR + 18)) /*< Current Receive Buffer Address /
380	#define CSR_CXBA(S) ((uint32_t)((S)->aCSR + 20)) /*< Current Transmit Buffer Address /
381	#define CSR_NRBA(S) ((uint32_t)((S)->aCSR + 22)) /*< Next Receive Buffer Address /
382	#define CSR_BADR(S) ((uint32_t)((S)->aCSR + 24)) /*< Base Address of Receive Ring /
383	#define CSR_NRDA(S) ((uint32_t)((S)->aCSR + 26)) /*< Next Receive Descriptor Address /
384	#define CSR_CRDA(S) ((uint32_t)((S)->aCSR + 28)) /*< Current Receive Descriptor Address /
385	#define CSR_BADX(S) ((uint32_t)((S)->aCSR + 30)) /*< Base Address of Transmit Descriptor /
386	#define CSR_NXDA(S) ((uint32_t)((S)->aCSR + 32)) /*< Next Transmit Descriptor Address /
387	#define CSR_CXDA(S) ((uint32_t)((S)->aCSR + 34)) /*< Current Transmit Descriptor Address /
388	#define CSR_NNRD(S) ((uint32_t)((S)->aCSR + 36)) /*< Next Next Receive Descriptor Address /
389	#define CSR_NNXD(S) ((uint32_t)((S)->aCSR + 38)) /*< Next Next Transmit Descriptor Address /
390	#define CSR_CRBC(S) ((S)->aCSR[40]) /*< Current Receive Byte Count /
391	#define CSR_CRST(S) ((S)->aCSR[41]) /*< Current Receive Status /
392	#define CSR_CXBC(S) ((S)->aCSR[42]) /*< Current Transmit Byte Count /
393	#define CSR_CXST(S) ((S)->aCSR[43]) /*< Current transmit status /
394	#define CSR_NRBC(S) ((S)->aCSR[44]) /*< Next Receive Byte Count /
395	#define CSR_NRST(S) ((S)->aCSR[45]) /*< Next Receive Status /
396	#define CSR_POLL(S) ((S)->aCSR[46]) /*< Transmit Poll Time Counter /
397	#define CSR_PINT(S) ((S)->aCSR[47]) /*< Transmit Polling Interval /
398	#define CSR_PXDA(S) ((uint32_t)((S)->aCSR + 60)) /*< Previous Transmit Descriptor Address/
399	#define CSR_PXBC(S) ((S)->aCSR[62]) /*< Previous Transmit Byte Count /
400	#define CSR_PXST(S) ((S)->aCSR[63]) /*< Previous Transmit Status /
401	#define CSR_NXBA(S) ((uint32_t)((S)->aCSR + 64)) /*< Next Transmit Buffer Address /
402	#define CSR_NXBC(S) ((S)->aCSR[66]) /*< Next Transmit Byte Count /
403	#define CSR_NXST(S) ((S)->aCSR[67]) /*< Next Transmit Status /
404	#define CSR_RCVRC(S) ((S)->aCSR[72]) /*< Receive Descriptor Ring Counter /
405	#define CSR_XMTRC(S) ((S)->aCSR[74]) /*< Transmit Descriptor Ring Counter /
406	#define CSR_RCVRL(S) ((S)->aCSR[76]) /*< Receive Descriptor Ring Length /
407	#define CSR_XMTRL(S) ((S)->aCSR[78]) /*< Transmit Descriptor Ring Length /
408	#define CSR_MISSC(S) ((S)->aCSR[112]) /*< Missed Frame Count /
409
410	#define PHYSADDR(S,A) ((A) \| (S)->GCUpperPhys)
411
412	/* Version for the PCnet/FAST III 79C973 card */
413	#define CSR_VERSION_LOW_79C973 0x5003 /* the lower two bits must be 11b for AMD */
414	#define CSR_VERSION_LOW_79C970A 0x1003 /* the lower two bits must be 11b for AMD */
415	#define CSR_VERSION_HIGH 0x0262
416
417	/** @todo All structs: big endian? */
418
419	#pragma pack(1) /* bird: MSC paranoia */
420	/** frank: From the gcc manual: ``This attribute, attached to `struct' or `union' type
421	* definition, specifies that each member (other than zero-width bitfields) of
422	* the structure or union is placed to minimize the memory required. ...
423	* Specifying this attribute for `struct' and `union' types is equivalent to
424	* specifying the `packed attribute' on each the structure or union members.''
425	* @todo r=bird: #pragma pack(1) / __attribute__((packed)) isn't necessary here
426	* because of the way the alignment rules work.
427	*/
428	struct PACKED INITBLK16
429	{
430	uint16_t mode; /*< copied into csr15 /
431	uint16_t padr1; /*< MAC 0..15 /
432	uint16_t padr2; /*< MAC 16..32 /
433	uint16_t padr3; /*< MAC 33..47 /
434	uint16_t ladrf1; /*< logical address filter 0..15 /
435	uint16_t ladrf2; /*< logical address filter 16..31 /
436	uint16_t ladrf3; /*< logical address filter 32..47 /
437	uint16_t ladrf4; /*< logical address filter 48..63 /
438	uint32_t rdra:24; /*< address of receive descriptor ring /
439	uint32_t res1:5; /*< reserved /
440	uint32_t rlen:3; /*< number of receive descriptor ring entries /
441	uint32_t tdra:24; /*< address of transmit descriptor ring /
442	uint32_t res2:5; /*< reserved /
443	uint32_t tlen:3; /*< number of transmit descriptor ring entries /
444	};
445	AssertCompileSize(INITBLK16, 24);
446
447	/** bird: I've changed the type for the bitfields. They should only be 16-bit all together.
448	* frank: I've changed the bitfiled types to uint32_t to prevent compiler warnings. */
449	struct PACKED INITBLK32
450	{
451	uint16_t mode; /*< copied into csr15 /
452	uint16_t res1:4; /*< reserved /
453	uint16_t rlen:4; /*< number of receive descriptor ring entries /
454	uint16_t res2:4; /*< reserved /
455	uint16_t tlen:4; /*< number of transmit descriptor ring entries /
456	uint16_t padr1; /*< MAC 0..15 /
457	uint16_t padr2; /*< MAC 16..31 /
458	uint16_t padr3; /*< MAC 32..47 /
459	uint16_t res3; /*< reserved /
460	uint16_t ladrf1; /*< logical address filter 0..15 /
461	uint16_t ladrf2; /*< logical address filter 16..31 /
462	uint16_t ladrf3; /*< logibal address filter 32..47 /
463	uint16_t ladrf4; /*< logical address filter 48..63 /
464	uint32_t rdra; /*< address of receive descriptor ring /
465	uint32_t tdra; /*< address of transmit descriptor ring /
466	};
467	AssertCompileSize(INITBLK32, 28);
468
469	/** Transmit Message Descriptor */
470	typedef struct TMD
471	{
472	struct
473	{
474	uint32_t tbadr; /*< transmit buffer address /
475	} tmd0;
476	struct PACKED
477	{
478	uint32_t bcnt:12; /*< buffer byte count (two's complement) /
479	uint32_t ones:4; /*< must be 1111b /
480	uint32_t res:7; /*< reserved /
481	uint32_t bpe:1; /*< bus parity error /
482	uint32_t enp:1; /*< end of packet /
483	uint32_t stp:1; /*< start of packet /
484	uint32_t def:1; /*< deferred /
485	uint32_t one:1; /*< exactly one retry was needed to transmit a frame /
486	uint32_t ltint:1; /*< suppress interrupts after successful transmission /
487	uint32_t nofcs:1; /**< when set, the state of DXMTFCS is ignored and
488	transmitter FCS generation is activated. */
489	uint32_t err:1; /*< error occured /
490	uint32_t own:1; /*< 0=owned by guest driver, 1=owned by controller /
491	} tmd1;
492	struct PACKED
493	{
494	uint32_t trc:4; /*< transmit retry count /
495	uint32_t res:12; /*< reserved /
496	uint32_t tdr:10; /*< ??? /
497	uint32_t rtry:1; /*< retry error /
498	uint32_t lcar:1; /*< loss of carrier /
499	uint32_t lcol:1; /*< late collision /
500	uint32_t exdef:1; /*< excessive deferral /
501	uint32_t uflo:1; /*< underflow error /
502	uint32_t buff:1; /*< out of buffers (ENP not found) /
503	} tmd2;
504	struct
505	{
506	uint32_t res; /*< reserved for user defined space /
507	} tmd3;
508	} TMD;
509	AssertCompileSize(TMD, 16);
510
511	/** Receive Message Descriptor */
512	typedef struct RMD
513	{
514	struct
515	{
516	uint32_t rbadr; /*< receive buffer address /
517	} rmd0;
518	struct PACKED
519	{
520	uint32_t bcnt:12; /*< buffer byte count (two's complement) /
521	uint32_t ones:4; /*< must be 1111b /
522	uint32_t res:4; /*< reserved /
523	uint32_t bam:1; /*< broadcast address match /
524	uint32_t lafm:1; /*< logical filter address match /
525	uint32_t pam:1; /*< physcial address match /
526	uint32_t bpe:1; /*< bus parity error /
527	uint32_t enp:1; /*< end of packet /
528	uint32_t stp:1; /*< start of packet /
529	uint32_t buff:1; /*< buffer error /
530	uint32_t crc:1; /*< crc error on incoming frame /
531	uint32_t oflo:1; /*< overflow error (lost all or part of incoming frame) /
532	uint32_t fram:1; /*< frame error /
533	uint32_t err:1; /*< error occured /
534	uint32_t own:1; /*< 0=owned by guest driver, 1=owned by controller /
535	} rmd1;
536	struct PACKED
537	{
538	uint32_t mcnt:12; /*< message byte count /
539	uint32_t zeros:4; /*< 0000b /
540	uint32_t rpc:8; /*< receive frame tag /
541	uint32_t rcc:8; /*< receive frame tag + reserved /
542	} rmd2;
543	struct
544	{
545	uint32_t res; /*< reserved for user defined space /
546	} rmd3;
547	} RMD;
548	AssertCompileSize(RMD, 16);
549	#pragma pack()
550
551
552	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
553	/*******************************************************************************
554	* Internal Functions *
555	*******************************************************************************/
556	#define PRINT_TMD(T) Log2(( \
557	"TMD0 : TBADR=0x%08x\n" \
558	"TMD1 : OWN=%d, ERR=%d, FCS=%d, LTI=%d, " \
559	"ONE=%d, DEF=%d, STP=%d, ENP=%d,\n" \
560	" BPE=%d, BCNT=%d\n" \
561	"TMD2 : BUF=%d, UFL=%d, EXD=%d, LCO=%d, " \
562	"LCA=%d, RTR=%d,\n" \
563	" TDR=%d, TRC=%d\n", \
564	(T)->tmd0.tbadr, \
565	(T)->tmd1.own, (T)->tmd1.err, (T)->tmd1.nofcs, \
566	(T)->tmd1.ltint, (T)->tmd1.one, (T)->tmd1.def, \
567	(T)->tmd1.stp, (T)->tmd1.enp, (T)->tmd1.bpe, \
568	4096-(T)->tmd1.bcnt, \
569	(T)->tmd2.buff, (T)->tmd2.uflo, (T)->tmd2.exdef,\
570	(T)->tmd2.lcol, (T)->tmd2.lcar, (T)->tmd2.rtry, \
571	(T)->tmd2.tdr, (T)->tmd2.trc))
572
573	#define PRINT_RMD(R) Log2(( \
574	"RMD0 : RBADR=0x%08x\n" \
575	"RMD1 : OWN=%d, ERR=%d, FRAM=%d, OFLO=%d, " \
576	"CRC=%d, BUFF=%d, STP=%d, ENP=%d,\n " \
577	"BPE=%d, PAM=%d, LAFM=%d, BAM=%d, ONES=%d, BCNT=%d\n" \
578	"RMD2 : RCC=%d, RPC=%d, MCNT=%d, ZEROS=%d\n", \
579	(R)->rmd0.rbadr, \
580	(R)->rmd1.own, (R)->rmd1.err, (R)->rmd1.fram, \
581	(R)->rmd1.oflo, (R)->rmd1.crc, (R)->rmd1.buff, \
582	(R)->rmd1.stp, (R)->rmd1.enp, (R)->rmd1.bpe, \
583	(R)->rmd1.pam, (R)->rmd1.lafm, (R)->rmd1.bam, \
584	(R)->rmd1.ones, 4096-(R)->rmd1.bcnt, \
585	(R)->rmd2.rcc, (R)->rmd2.rpc, (R)->rmd2.mcnt, \
586	(R)->rmd2.zeros))
587
588	/**
589	* Load transmit message descriptor
590	* Make sure we read the own flag first.
591	*/
592	DECLINLINE(void) pcnetTmdLoad(PCNetState pData, TMD tmd, RTGCPHYS addr)
593	{
594	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
595	uint8_t ownbyte;
596
597	if (!BCR_SWSTYLE(pData))
598	{
599	uint16_t xda[4];
600
601	PDMDevHlpPhysRead(pDevIns, addr+3, &ownbyte, 1);
602	PDMDevHlpPhysRead(pDevIns, addr, (void*)&xda[0], sizeof(xda));
603	((uint32_t *)tmd)[0] = (uint32_t)xda[0] \| ((uint32_t)(xda[1] & 0x00ff) << 16);
604	((uint32_t *)tmd)[1] = (uint32_t)xda[2] \| ((uint32_t)(xda[1] & 0xff00) << 16);
605	((uint32_t *)tmd)[2] = (uint32_t)xda[3] << 16;
606	((uint32_t *)tmd)[3] = 0;
607	}
608	else if (BCR_SWSTYLE(pData) != 3)
609	{
610	PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
611	PDMDevHlpPhysRead(pDevIns, addr, (void*)tmd, 16);
612	}
613	else
614	{
615	uint32_t xda[4];
616	PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
617	PDMDevHlpPhysRead(pDevIns, addr, (void*)&xda[0], sizeof(xda));
618	((uint32_t *)tmd)[0] = xda[2];
619	((uint32_t *)tmd)[1] = xda[1];
620	((uint32_t *)tmd)[2] = xda[0];
621	((uint32_t *)tmd)[3] = xda[3];
622	}
623	/* Double check the own bit; guest drivers might be buggy and lock prefixes in the recompiler are ignored by other threads. */
624	#ifdef DEBUG
625	if (tmd->tmd1.own == 1 && !(ownbyte & 0x80))
626	Log(("pcnetTmdLoad: own bit flipped while reading!!\n"));
627	#endif
628	if (!(ownbyte & 0x80))
629	tmd->tmd1.own = 0;
630	}
631
632	/**
633	* Store transmit message descriptor and hand it over to the host (the VM guest).
634	* Make sure that all data are transmitted before we clear the own flag.
635	*/
636	DECLINLINE(void) pcnetTmdStorePassHost(PCNetState pData, TMD tmd, RTGCPHYS addr)
637	{
638	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatTmdStore), a);
639	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
640	if (!BCR_SWSTYLE(pData))
641	{
642	uint16_t xda[4];
643	xda[0] = ((uint32_t *)tmd)[0] & 0xffff;
644	xda[1] = ((((uint32_t )tmd)[0] >> 16) & 0xff) \| ((((uint32_t )tmd)[1]>>16) & 0xff00);
645	xda[2] = ((uint32_t *)tmd)[1] & 0xffff;
646	xda[3] = ((uint32_t *)tmd)[2] >> 16;
647	xda[1] \|= 0x8000;
648	PDMDevHlpPhysWrite(pDevIns, addr, (void*)&xda[0], sizeof(xda));
649	xda[1] &= ~0x8000;
650	PDMDevHlpPhysWrite(pDevIns, addr+3, (uint8_t*)xda + 3, 1);
651	}
652	else if (BCR_SWSTYLE(pData) != 3)
653	{
654	((uint32_t*)tmd)[1] \|= 0x80000000;
655	PDMDevHlpPhysWrite(pDevIns, addr, (void*)tmd, 16);
656	((uint32_t*)tmd)[1] &= ~0x80000000;
657	PDMDevHlpPhysWrite(pDevIns, addr+7, (uint8_t*)tmd + 7, 1);
658	}
659	else
660	{
661	uint32_t xda[4];
662	xda[0] = ((uint32_t *)tmd)[2];
663	xda[1] = ((uint32_t *)tmd)[1];
664	xda[2] = ((uint32_t *)tmd)[0];
665	xda[3] = ((uint32_t *)tmd)[3];
666	xda[1] \|= 0x80000000;
667	PDMDevHlpPhysWrite(pDevIns, addr, (void*)&xda[0], sizeof(xda));
668	xda[1] &= ~0x80000000;
669	PDMDevHlpPhysWrite(pDevIns, addr+7, (uint8_t*)xda + 7, 1);
670	}
671	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatTmdStore), a);
672	}
673
674	/**
675	* Load receive message descriptor
676	* Make sure we read the own flag first.
677	*/
678	DECLINLINE(void) pcnetRmdLoad(PCNetState pData, RMD rmd, RTGCPHYS addr)
679	{
680	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
681	uint8_t ownbyte;
682
683	if (!BCR_SWSTYLE(pData))
684	{
685	uint16_t rda[4];
686	PDMDevHlpPhysRead(pDevIns, addr+3, &ownbyte, 1);
687	PDMDevHlpPhysRead(pDevIns, addr, (void*)&rda[0], sizeof(rda));
688	((uint32_t *)rmd)[0] = (uint32_t)rda[0] \| ((rda[1] & 0x00ff) << 16);
689	((uint32_t *)rmd)[1] = (uint32_t)rda[2] \| ((rda[1] & 0xff00) << 16);
690	((uint32_t *)rmd)[2] = (uint32_t)rda[3];
691	((uint32_t *)rmd)[3] = 0;
692	}
693	else if (BCR_SWSTYLE(pData) != 3)
694	{
695	PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
696	PDMDevHlpPhysRead(pDevIns, addr, (void*)rmd, 16);
697	}
698	else
699	{
700	uint32_t rda[4];
701	PDMDevHlpPhysRead(pDevIns, addr+7, &ownbyte, 1);
702	PDMDevHlpPhysRead(pDevIns, addr, (void*)&rda[0], sizeof(rda));
703	((uint32_t *)rmd)[0] = rda[2];
704	((uint32_t *)rmd)[1] = rda[1];
705	((uint32_t *)rmd)[2] = rda[0];
706	((uint32_t *)rmd)[3] = rda[3];
707	}
708	/* Double check the own bit; guest drivers might be buggy and lock prefixes in the recompiler are ignored by other threads. */
709	#ifdef DEBUG
710	if (rmd->rmd1.own == 1 && !(ownbyte & 0x80))
711	Log(("pcnetTmdLoad: own bit flipped while reading!!\n"));
712	#endif
713	if (!(ownbyte & 0x80))
714	rmd->rmd1.own = 0;
715	}
716
717	/**
718	* Store receive 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	*/
721	DECLINLINE(void) pcnetRmdStorePassHost(PCNetState pData, RMD rmd, RTGCPHYS addr)
722	{
723	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
724	if (!BCR_SWSTYLE(pData))
725	{
726	uint16_t rda[4];
727	rda[0] = ((uint32_t *)rmd)[0] & 0xffff;
728	rda[1] = ((((uint32_t )rmd)[0]>>16) & 0xff) \| ((((uint32_t )rmd)[1]>>16) & 0xff00);
729	rda[2] = ((uint32_t *)rmd)[1] & 0xffff;
730	rda[3] = ((uint32_t *)rmd)[2] & 0xffff;
731	rda[1] \|= 0x8000;
732	PDMDevHlpPhysWrite(pDevIns, addr, (void*)&rda[0], sizeof(rda));
733	rda[1] &= ~0x8000;
734	PDMDevHlpPhysWrite(pDevIns, addr+3, (uint8_t*)rda + 3, 1);
735	}
736	else if (BCR_SWSTYLE(pData) != 3)
737	{
738	((uint32_t*)rmd)[1] \|= 0x80000000;
739	PDMDevHlpPhysWrite(pDevIns, addr, (void*)rmd, 16);
740	((uint32_t*)rmd)[1] &= ~0x80000000;
741	PDMDevHlpPhysWrite(pDevIns, addr+7, (uint8_t*)rmd + 7, 1);
742	}
743	else
744	{
745	uint32_t rda[4];
746	rda[0] = ((uint32_t *)rmd)[2];
747	rda[1] = ((uint32_t *)rmd)[1];
748	rda[2] = ((uint32_t *)rmd)[0];
749	rda[3] = ((uint32_t *)rmd)[3];
750	rda[1] \|= 0x80000000;
751	PDMDevHlpPhysWrite(pDevIns, addr, (void*)&rda[0], sizeof(rda));
752	rda[1] &= ~0x80000000;
753	PDMDevHlpPhysWrite(pDevIns, addr+7, (uint8_t*)rda + 7, 1);
754	}
755	}
756
757	/** Checks if it's a bad (as in invalid) RMD.*/
758	#define IS_RMD_BAD(rmd) ((rmd).rmd1.ones != 15 \|\| (rmd).rmd2.zeros != 0)
759
760	/** The network card is the owner of the RDTE/TDTE, actually it is this driver */
761	#define CARD_IS_OWNER(desc) (((desc) & 0x8000))
762
763	/** The host is the owner of the RDTE/TDTE -- actually the VM guest. */
764	#define HOST_IS_OWNER(desc) (!((desc) & 0x8000))
765
766	#ifndef ETHER_IS_MULTICAST /* Net/Open BSD macro it seems */
767	#define ETHER_IS_MULTICAST(a) (((uint8_t )(a)) & 1)
768	#endif
769
770	#define ETHER_ADDR_LEN ETH_ALEN
771	#define ETH_ALEN 6
772	#pragma pack(1)
773	struct ether_header
774	{
775	uint8_t ether_dhost[ETH_ALEN]; /*< destination ethernet address /
776	uint8_t ether_shost[ETH_ALEN]; /*< source ethernet address /
777	uint16_t ether_type; /*< packet type ID field /
778	};
779	#pragma pack()
780
781	#ifdef LOG_PACKETS
782	static void LogPkt(const char name, const void const src, int count)
783	{
784	int i, j;
785	const uint8_t * const p = (const uint8_t * const)src;
786	LogRel(("%s: ", name));
787	i = 14; // length of MAC header
788	i += 4*(p[i] & 15); // length of IP header
789	i += 4*(p[i+12] >> 4); // length of TCP header
790	for (j=i; j<70 && j<count; j++)
791	LogRel((" %02x", p[j]));
792	LogRel((" ("));
793	for (j=i; j<70 && j<count; j++)
794	LogRel(("%c", p[j] >= 32 && p[j] < 127 ? p[j] : '.'));
795	LogRel((")\n"));
796	}
797	#endif
798
799	#define PRINT_PKTHDR(BUF) do { \
800	struct ether_header hdr = (struct ether_header )(BUF); \
801	Log(("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, " \
802	"shost=%02x:%02x:%02x:%02x:%02x:%02x, " \
803	"type=0x%04x (bcast=%d)\n", \
804	hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2], \
805	hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5], \
806	hdr->ether_shost[0],hdr->ether_shost[1],hdr->ether_shost[2], \
807	hdr->ether_shost[3],hdr->ether_shost[4],hdr->ether_shost[5], \
808	htons(hdr->ether_type), \
809	!!ETHER_IS_MULTICAST(hdr->ether_dhost))); \
810	} while (0)
811
812
813	#ifdef IN_RING3
814
815	#define MULTICAST_FILTER_LEN 8
816
817	DECLINLINE(uint32_t) lnc_mchash(const uint8_t *ether_addr)
818	{
819	#define LNC_POLYNOMIAL 0xEDB88320UL
820	uint32_t crc = 0xFFFFFFFF;
821	int idx, bit;
822	uint8_t data;
823
824	for (idx = 0; idx < ETHER_ADDR_LEN; idx++)
825	{
826	for (data = *ether_addr++, bit = 0; bit < MULTICAST_FILTER_LEN; bit++)
827	{
828	crc = (crc >> 1) ^ (((crc ^ data) & 1) ? LNC_POLYNOMIAL : 0);
829	data >>= 1;
830	}
831	}
832	return crc;
833	#undef LNC_POLYNOMIAL
834	}
835
836	#define CRC(crc, ch) (crc = (crc >> 8) ^ crctab[(crc ^ (ch)) & 0xff])
837
838	/* generated using the AUTODIN II polynomial
839	* x^32 + x^26 + x^23 + x^22 + x^16 +
840	* x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1
841	*/
842	static const uint32_t crctab[256] =
843	{
844	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
845	0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
846	0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
847	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
848	0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
849	0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
850	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
851	0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
852	0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
853	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
854	0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
855	0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
856	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
857	0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
858	0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
859	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
860	0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
861	0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
862	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
863	0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
864	0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
865	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
866	0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
867	0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
868	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
869	0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
870	0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
871	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
872	0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
873	0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
874	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
875	0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
876	0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
877	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
878	0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
879	0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
880	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
881	0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
882	0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
883	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
884	0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
885	0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
886	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
887	0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
888	0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
889	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
890	0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
891	0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
892	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
893	0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
894	0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
895	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
896	0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
897	0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
898	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
899	0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
900	0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
901	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
902	0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
903	0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
904	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
905	0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
906	0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
907	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
908	};
909
910	DECLINLINE(int) padr_match(PCNetState pData, const uint8_t buf, int size)
911	{
912	struct ether_header hdr = (struct ether_header )buf;
913	int result;
914	#if (defined(__X86__) \|\| defined(__AMD64__)) && !defined(PCNET_DEBUG_MATCH)
915	result = !CSR_DRCVPA(pData) && !memcmp(hdr->ether_dhost, pData->aCSR + 12, 6);
916	#else
917	uint8_t padr[6];
918	padr[0] = pData->aCSR[12] & 0xff;
919	padr[1] = pData->aCSR[12] >> 8;
920	padr[2] = pData->aCSR[13] & 0xff;
921	padr[3] = pData->aCSR[13] >> 8;
922	padr[4] = pData->aCSR[14] & 0xff;
923	padr[5] = pData->aCSR[14] >> 8;
924	result = !CSR_DRCVPA(pData) && !memcmp(hdr->ether_dhost, padr, 6);
925	#endif
926
927	#ifdef PCNET_DEBUG_MATCH
928	Log(("#%d packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, "
929	"padr=%02x:%02x:%02x:%02x:%02x:%02x\n",
930	PCNETSTATE_2_DEVINS(pData)->iInstance,
931	hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2],
932	hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5],
933	padr[0],padr[1],padr[2],padr[3],padr[4],padr[5]));
934	Log(("padr_match result=%d\n", result));
935	#endif
936	return result;
937	}
938
939	DECLINLINE(int) padr_bcast(PCNetState pData, const uint8_t buf, int size)
940	{
941	static uint8_t aBCAST[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
942	struct ether_header hdr = (struct ether_header )buf;
943	int result = !CSR_DRCVBC(pData) && !memcmp(hdr->ether_dhost, aBCAST, 6);
944	#ifdef PCNET_DEBUG_MATCH
945	Log(("#%d padr_bcast result=%d\n", PCNETSTATE_2_DEVINS(pData)->iInstance, result));
946	#endif
947	return result;
948	}
949
950	static int ladr_match(PCNetState pData, const uint8_t buf, int size)
951	{
952	struct ether_header hdr = (struct ether_header )buf;
953	if (RT_UNLIKELY(hdr->ether_dhost[0] & 0x01) && ((uint64_t *)&pData->aCSR[8])[0] != 0LL)
954	{
955	int index;
956	#if defined(__X86__) \|\| defined(__AMD64__)
957	index = lnc_mchash(hdr->ether_dhost) >> 26;
958	return ((uint8_t*)(pData->aCSR + 8))[index >> 3] & (1 << (index & 7));
959	#else
960	uint8_t ladr[8];
961	ladr[0] = pData->aCSR[8] & 0xff;
962	ladr[1] = pData->aCSR[8] >> 8;
963	ladr[2] = pData->aCSR[9] & 0xff;
964	ladr[3] = pData->aCSR[9] >> 8;
965	ladr[4] = pData->aCSR[10] & 0xff;
966	ladr[5] = pData->aCSR[10] >> 8;
967	ladr[6] = pData->aCSR[11] & 0xff;
968	ladr[7] = pData->aCSR[11] >> 8;
969	index = lnc_mchash(hdr->ether_dhost) >> 26;
970	return (ladr[index >> 3] & (1 << (index & 7)));
971	#endif
972	}
973	return 0;
974	}
975
976	#endif /* IN_RING3 */
977
978	/**
979	* Get the receive descriptor ring address with a given index.
980	*/
981	DECLINLINE(RTGCPHYS) pcnetRdraAddr(PCNetState *pData, int idx)
982	{
983	return pData->GCRDRA + ((CSR_RCVRL(pData) - idx) << pData->iLog2DescSize);
984	}
985
986	/**
987	* Get the transmit descriptor ring address with a given index.
988	*/
989	DECLINLINE(RTGCPHYS) pcnetTdraAddr(PCNetState *pData, int idx)
990	{
991	return pData->GCTDRA + ((CSR_XMTRL(pData) - idx) << pData->iLog2DescSize);
992	}
993
994	__BEGIN_DECLS
995	PDMBOTHCBDECL(int) pcnetIOPortRead(PPDMDEVINS pDevIns, void *pvUser,
996	RTIOPORT Port, uint32_t *pu32, unsigned cb);
997	PDMBOTHCBDECL(int) pcnetIOPortWrite(PPDMDEVINS pDevIns, void *pvUser,
998	RTIOPORT Port, uint32_t u32, unsigned cb);
999	PDMBOTHCBDECL(int) pcnetIOPortAPromWrite(PPDMDEVINS pDevIns, void *pvUser,
1000	RTIOPORT Port, uint32_t u32, unsigned cb);
1001	PDMBOTHCBDECL(int) pcnetIOPortAPromRead(PPDMDEVINS pDevIns, void *pvUser,
1002	RTIOPORT Port, uint32_t *pu32, unsigned cb);
1003	PDMBOTHCBDECL(int) pcnetMMIORead(PPDMDEVINS pDevIns, void *pvUser,
1004	RTGCPHYS GCPhysAddr, void *pv, unsigned cb);
1005	PDMBOTHCBDECL(int) pcnetMMIOWrite(PPDMDEVINS pDevIns, void *pvUser,
1006	RTGCPHYS GCPhysAddr, void *pv, unsigned cb);
1007	#ifndef IN_RING3
1008	DECLEXPORT(int) pcnetHandleRingWrite(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame,
1009	RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
1010	#endif
1011	__END_DECLS
1012
1013	#undef htonl
1014	#define htonl(x) ASMByteSwapU32(x)
1015	#undef htons
1016	#define htons(x) ( (((x) & 0xff00) >> 8) \| (((x) & 0x00ff) << 8) )
1017
1018	static void pcnetPollRxTx(PCNetState *pData);
1019	static void pcnetPollTimer(PCNetState *pData);
1020	static void pcnetUpdateIrq(PCNetState *pData);
1021	static uint32_t pcnetBCRReadU16(PCNetState *pData, uint32_t u32RAP);
1022	static int pcnetBCRWriteU16(PCNetState *pData, uint32_t u32RAP, uint32_t val);
1023
1024
1025	#ifdef PCNET_NO_POLLING
1026	# ifndef IN_RING3
1027
1028	/**
1029	* #PF Virtual Handler callback for Guest write access to the ring descriptor page(pData)
1030	*
1031	* @return VBox status code (appropriate for trap handling and GC return).
1032	* @param pVM VM Handle.
1033	* @param uErrorCode CPU Error code.
1034	* @param pRegFrame Trap register frame.
1035	* @param pvFault The fault address (cr2).
1036	* @param GCPhysFault The GC physical address corresponding to pvFault.
1037	* @param pvUser User argument.
1038	*/
1039	DECLEXPORT(int) pcnetHandleRingWrite(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame,
1040	RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
1041	{
1042	PCNetState pData = (PCNetState )pvUser;
1043
1044	Log(("#%d pcnetHandleRingWriteGC: write to %08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, GCPhysFault));
1045
1046	uint32_t cb;
1047	int rc = CTXALLSUFF(pData->pfnEMInterpretInstruction)(pVM, pRegFrame, pvFault, &cb);
1048	if (VBOX_SUCCESS(rc) && cb)
1049	{
1050	if ( (GCPhysFault >= pData->GCTDRA && GCPhysFault + cb < pcnetTdraAddr(pData, 0))
1051	#ifdef PCNET_MONITOR_RECEIVE_RING
1052	\|\| (GCPhysFault >= pData->GCRDRA && GCPhysFault + cb < pcnetRdraAddr(pData, 0))
1053	#endif
1054	)
1055	{
1056	uint32_t offsetTDRA = (GCPhysFault - pData->GCTDRA);
1057
1058	int rc = PDMCritSectEnter(&pData->CritSect, VERR_SEM_BUSY);
1059	if (VBOX_SUCCESS(rc))
1060	{
1061	STAM_COUNTER_INC(&CTXALLSUFF(pData->StatRingWrite)); ;
1062
1063	/* Check if we can do something now */
1064	pcnetPollRxTx(pData);
1065	pcnetUpdateIrq(pData);
1066
1067	PDMCritSectLeave(&pData->CritSect);
1068	return VINF_SUCCESS;
1069	}
1070	}
1071	else
1072	{
1073	STAM_COUNTER_INC(&CTXALLSUFF(pData->StatRingWriteOutsideRange)); ;
1074	return VINF_SUCCESS; /* outside of the ring range */
1075	}
1076	}
1077	STAM_COUNTER_INC(&CTXALLSUFF(pData->StatRingWriteFailed)); ;
1078	return VINF_IOM_HC_MMIO_WRITE; /* handle in ring3 */
1079	}
1080
1081	# else /* IN_RING3 */
1082
1083	/**
1084	* #PF Handler callback for physical access handler ranges (MMIO among others) in HC.
1085	*
1086	* The handler can not raise any faults, it's mainly for monitoring write access
1087	* to certain pages.
1088	*
1089	* @returns VINF_SUCCESS if the handler have carried out the operation.
1090	* @returns VINF_PGM_HANDLER_DO_DEFAULT if the caller should carry out the access operation.
1091	* @param pVM VM Handle.
1092	* @param GCPhys The physical address the guest is writing to.
1093	* @param pvPhys The HC mapping of that address.
1094	* @param pvBuf What the guest is reading/writing.
1095	* @param cbBuf How much it's reading/writing.
1096	* @param enmAccessType The access type.
1097	* @param pvUser User argument.
1098	*/
1099	static DECLCALLBACK(int) pcnetHandleRingWrite(PVM pVM, RTGCPHYS GCPhys, void pvPhys, void pvBuf,
1100	size_t cbBuf, PGMACCESSTYPE enmAccessType, void *pvUser)
1101	{
1102	PPDMDEVINS pDevIns = (PPDMDEVINS)pvUser;
1103	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
1104
1105	Log(("#%d pcnetHandleRingWrite: write to %08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, GCPhys));
1106	#ifdef VBOX_WITH_STATISTICS
1107	STAM_COUNTER_INC(&CTXSUFF(pData->StatRingWrite));
1108	if (GCPhys >= pData->GCRDRA && GCPhys < pcnetRdraAddr(pData, 0))
1109	STAM_COUNTER_INC(&pData->StatRCVRingWrite);
1110	else if (GCPhys >= pData->GCTDRA && GCPhys < pcnetTdraAddr(pData, 0))
1111	STAM_COUNTER_INC(&pData->StatTXRingWrite);
1112	#endif
1113	/* Perform the actual write */
1114	memcpy((char *)pvPhys, pvBuf, cbBuf);
1115
1116	/* Writes done by our code don't require polling of course */
1117	if (PDMCritSectIsOwner(&pData->CritSect) == false)
1118	{
1119	if ( (GCPhys >= pData->GCTDRA && GCPhys + cbBuf < pcnetTdraAddr(pData, 0))
1120	#ifdef PCNET_MONITOR_RECEIVE_RING
1121	\|\| (GCPhys >= pData->GCRDRA && GCPhys + cbBuf < pcnetRdraAddr(pData, 0))
1122	#endif
1123	)
1124	{
1125	int rc = PDMCritSectEnter(&pData->CritSect, VERR_SEM_BUSY);
1126	AssertReleaseRC(rc);
1127	/* Check if we can do something now */
1128	pcnetPollRxTx(pData);
1129	pcnetUpdateIrq(pData);
1130	PDMCritSectLeave(&pData->CritSect);
1131	}
1132	}
1133	return VINF_SUCCESS;
1134	}
1135	# endif /* !IN_RING3 */
1136	#endif /* PCNET_NO_POLLING */
1137
1138	static void pcnetSoftReset(PCNetState *pData)
1139	{
1140	Log(("#%d pcnetSoftReset:\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
1141
1142	pData->u32Lnkst = 0x40;
1143	pData->GCRDRA = 0;
1144	pData->GCTDRA = 0;
1145	pData->u32RAP = 0;
1146
1147	pData->aBCR[BCR_BSBC] &= ~0x0080;
1148
1149	pData->aCSR[0] = 0x0004;
1150	pData->aCSR[3] = 0x0000;
1151	pData->aCSR[4] = 0x0115;
1152	pData->aCSR[5] = 0x0000;
1153	pData->aCSR[6] = 0x0000;
1154	pData->aCSR[8] = 0;
1155	pData->aCSR[9] = 0;
1156	pData->aCSR[10] = 0;
1157	pData->aCSR[11] = 0;
1158	pData->aCSR[12] = le16_to_cpu(((uint16_t *)&pData->aPROM[0])[0]);
1159	pData->aCSR[13] = le16_to_cpu(((uint16_t *)&pData->aPROM[0])[1]);
1160	pData->aCSR[14] = le16_to_cpu(((uint16_t *)&pData->aPROM[0])[2]);
1161	pData->aCSR[15] &= 0x21c4;
1162	CSR_RCVRC(pData) = 1;
1163	CSR_XMTRC(pData) = 1;
1164	CSR_RCVRL(pData) = 1;
1165	CSR_XMTRL(pData) = 1;
1166	pData->aCSR[80] = 0x1410;
1167	pData->aCSR[88] = pData->fAm79C973 ? CSR_VERSION_LOW_79C973 : CSR_VERSION_LOW_79C970A;
1168	pData->aCSR[89] = CSR_VERSION_HIGH;
1169	pData->aCSR[94] = 0x0000;
1170	pData->aCSR[100] = 0x0200;
1171	pData->aCSR[103] = 0x0105;
1172	pData->aCSR[103] = 0x0105;
1173	CSR_MISSC(pData) = 0;
1174	pData->aCSR[114] = 0x0000;
1175	pData->aCSR[122] = 0x0000;
1176	pData->aCSR[124] = 0x0000;
1177	}
1178
1179	/**
1180	* Check if we have to send an interrupt to the guest. An interrupt can occur on
1181	* - csr0 (written quite often)
1182	* - csr4 (only written by pcnetSoftReset(), pcnetStop() or by the guest driver)
1183	* - csr5 (only written by pcnetSoftReset(), pcnetStop or by the driver guest)
1184	*/
1185	static void pcnetUpdateIrq(PCNetState *pData)
1186	{
1187	register int iISR = 0;
1188	register uint16_t csr0 = pData->aCSR[0];
1189
1190	csr0 &= ~0x0080; /* clear INTR */
1191
1192	STAM_PROFILE_ADV_START(&pData->StatInterrupt, a);
1193
1194	/* Linux guests set csr4=0x0915
1195	* W2k guests set csr3=0x4940 (disable BABL, MERR, IDON, DXSUFLO */
1196
1197	#if 1
1198	if ( ( (csr0 & ~pData->aCSR[3]) & 0x5f00)
1199	\|\| (((pData->aCSR[4]>>1) & ~pData->aCSR[4]) & 0x0115)
1200	\|\| (((pData->aCSR[5]>>1) & pData->aCSR[5]) & 0x0048))
1201	#else
1202	if ( ( !(pData->aCSR[3] & 0x4000) && !!(csr0 & 0x4000)) /* BABL */
1203	\|\|( !(pData->aCSR[3] & 0x1000) && !!(csr0 & 0x1000)) /* MISS */
1204	\|\|( !(pData->aCSR[3] & 0x0100) && !!(csr0 & 0x0100)) /* IDON */
1205	\|\|( !(pData->aCSR[3] & 0x0200) && !!(csr0 & 0x0200)) /* TINT */
1206	\|\|( !(pData->aCSR[3] & 0x0400) && !!(csr0 & 0x0400)) /* RINT */
1207	\|\|( !(pData->aCSR[3] & 0x0800) && !!(csr0 & 0x0800)) /* MERR */
1208	\|\|( !(pData->aCSR[4] & 0x0001) && !!(pData->aCSR[4] & 0x0002)) /* JAB */
1209	\|\|( !(pData->aCSR[4] & 0x0004) && !!(pData->aCSR[4] & 0x0008)) /* TXSTRT */
1210	\|\|( !(pData->aCSR[4] & 0x0010) && !!(pData->aCSR[4] & 0x0020)) /* RCVO */
1211	\|\|( !(pData->aCSR[4] & 0x0100) && !!(pData->aCSR[4] & 0x0200)) /* MFCO */
1212	\|\|(!!(pData->aCSR[5] & 0x0040) && !!(pData->aCSR[5] & 0x0080)) /* EXDINT */
1213	\|\|(!!(pData->aCSR[5] & 0x0008) && !!(pData->aCSR[5] & 0x0010)) /* MPINT */)
1214	#endif
1215	{
1216	iISR = !!(csr0 & 0x0040); /* CSR_INEA */
1217	csr0 \|= 0x0080; /* set INTR */
1218	}
1219
1220	#ifdef VBOX
1221	if (pData->aCSR[4] & 0x0080) /* UINTCMD */
1222	{
1223	pData->aCSR[4] &= ~0x0080; /* clear UINTCMD */
1224	pData->aCSR[4] \|= 0x0040; /* set UINT */
1225	Log(("#%d user int\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
1226	}
1227	if (pData->aCSR[4] & csr0 & 0x0040 /* CSR_INEA */)
1228	{
1229	csr0 \|= 0x0080; /* set INTR */
1230	iISR = 1;
1231	}
1232	#else /* !VBOX */
1233	if (!!(pData->aCSR[4] & 0x0080) && CSR_INEA(pData)) /* UINTCMD */
1234	{
1235	pData->aCSR[4] &= ~0x0080;
1236	pData->aCSR[4] \|= 0x0040; /* set UINT */
1237	csr0 \|= 0x0080; /* set INTR */
1238	iISR = 1;
1239	Log(("#%d user int\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
1240	}
1241	#endif /* !VBOX */
1242
1243	#if 1
1244	if (((pData->aCSR[5]>>1) & pData->aCSR[5]) & 0x0500)
1245	#else
1246	if ( (!!(pData->aCSR[5] & 0x0400) && !!(pData->aCSR[5] & 0x0800)) /* SINT */
1247	\|\|(!!(pData->aCSR[5] & 0x0100) && !!(pData->aCSR[5] & 0x0200)) /* SLPINT */)
1248	#endif
1249	{
1250	iISR = 1;
1251	csr0 \|= 0x0080; /* INTR */
1252	}
1253
1254	pData->aCSR[0] = csr0;
1255
1256	Log2(("#%d set irq iISR=%d\n", PCNETSTATE_2_DEVINS(pData)->iInstance, iISR));
1257
1258	/* normal path is to _not_ change the IRQ status */
1259	if (RT_UNLIKELY(iISR != pData->iISR))
1260	{
1261	Log(("#%d INTA=%d\n", PCNETSTATE_2_DEVINS(pData)->iInstance, iISR));
1262	PDMDevHlpPCISetIrqNoWait(PCNETSTATE_2_DEVINS(pData), 0, iISR);
1263	pData->iISR = iISR;
1264	}
1265	STAM_PROFILE_ADV_STOP(&pData->StatInterrupt, a);
1266	}
1267
1268	#ifdef IN_RING3
1269	#ifdef PCNET_NO_POLLING
1270	static void pcnetUpdateRingHandlers(PCNetState *pData)
1271	{
1272	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
1273	int rc;
1274
1275	Log(("pcnetUpdateRingHandlers TD %VGp size %x -> %VGp size %x\n", pData->TDRAPhysOld, pData->cbTDRAOld, pData->GCTDRA, pcnetTdraAddr(pData, 0)));
1276	Log(("pcnetUpdateRingHandlers RX %VGp size %x -> %VGp size %x\n", pData->RDRAPhysOld, pData->cbRDRAOld, pData->GCRDRA, pcnetRdraAddr(pData, 0)));
1277
1278	/** @todo unregister order not correct! */
1279
1280	#ifdef PCNET_MONITOR_RECEIVE_RING
1281	if (pData->GCRDRA != pData->RDRAPhysOld \|\| CSR_RCVRL(pData) != pData->cbRDRAOld)
1282	{
1283	if (pData->RDRAPhysOld != 0)
1284	PGMHandlerPhysicalDeregister(PDMDevHlpGetVM(pDevIns),
1285	pData->RDRAPhysOld & ~PAGE_OFFSET_MASK);
1286
1287	rc = PGMR3HandlerPhysicalRegister(PDMDevHlpGetVM(pDevIns),
1288	PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
1289	pData->GCRDRA & ~PAGE_OFFSET_MASK,
1290	RT_ALIGN(pcnetRdraAddr(pData, 0), PAGE_SIZE) - 1,
1291	pcnetHandleRingWrite, pDevIns,
1292	g_DevicePCNet.szR0Mod, "pcnetHandleRingWrite",
1293	pData->pDevInsHC->pvInstanceDataHC,
1294	g_DevicePCNet.szGCMod, "pcnetHandleRingWrite",
1295	pData->pDevInsHC->pvInstanceDataGC,
1296	"PCNet receive ring write access handler");
1297	AssertRC(rc);
1298
1299	pData->RDRAPhysOld = pData->GCRDRA;
1300	pData->cbRDRAOld = pcnetRdraAddr(pData, 0);
1301	}
1302	#endif /* PCNET_MONITOR_RECEIVE_RING */
1303
1304	#ifdef PCNET_MONITOR_RECEIVE_RING
1305	/* 3 possibilities:
1306	* 1) TDRA on different physical page as RDRA
1307	* 2) TDRA completely on same physical page as RDRA
1308	* 3) TDRA & RDRA overlap partly with different physical pages
1309	*/
1310	RTGCPHYS RDRAPageStart = pData->GCRDRA & ~PAGE_OFFSET_MASK;
1311	RTGCPHYS RDRAPageEnd = (pcnetRdraAddr(pData, 0) - 1) & ~PAGE_OFFSET_MASK;
1312	RTGCPHYS TDRAPageStart = pData->GCTDRA & ~PAGE_OFFSET_MASK;
1313	RTGCPHYS TDRAPageEnd = (pcnetTdraAddr(pData, 0) - 1) & ~PAGE_OFFSET_MASK;
1314
1315	if ( RDRAPageStart > TDRAPageEnd
1316	\|\| TDRAPageStart > RDRAPageEnd)
1317	{
1318	#endif /* PCNET_MONITOR_RECEIVE_RING */
1319	/* 1) */
1320	if (pData->GCTDRA != pData->TDRAPhysOld \|\| CSR_XMTRL(pData) != pData->cbTDRAOld)
1321	{
1322	if (pData->TDRAPhysOld != 0)
1323	PGMHandlerPhysicalDeregister(PDMDevHlpGetVM(pDevIns),
1324	pData->TDRAPhysOld & ~PAGE_OFFSET_MASK);
1325
1326	rc = PGMR3HandlerPhysicalRegister(PDMDevHlpGetVM(pDevIns),
1327	PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
1328	pData->GCTDRA & ~PAGE_OFFSET_MASK,
1329	RT_ALIGN(pcnetTdraAddr(pData, 0), PAGE_SIZE) - 1,
1330	pcnetHandleRingWrite, pDevIns,
1331	g_DevicePCNet.szR0Mod, "pcnetHandleRingWrite",
1332	pData->pDevInsHC->pvInstanceDataHC,
1333	g_DevicePCNet.szGCMod, "pcnetHandleRingWrite",
1334	pData->pDevInsHC->pvInstanceDataGC,
1335	"PCNet transmit ring write access handler");
1336	AssertRC(rc);
1337
1338	pData->TDRAPhysOld = pData->GCTDRA;
1339	pData->cbTDRAOld = pcnetTdraAddr(pData, 0);
1340	}
1341	#ifdef PCNET_MONITOR_RECEIVE_RING
1342	}
1343	else
1344	if ( RDRAPageStart != TDRAPageStart
1345	&& ( TDRAPageStart == RDRAPageEnd
1346	\|\| TDRAPageEnd == RDRAPageStart
1347	)
1348	)
1349	{
1350	/* 3) */
1351	AssertFailed();
1352	}
1353	/* else 2) */
1354	#endif
1355	}
1356	#endif /* PCNET_NO_POLLING */
1357
1358	static void pcnetInit(PCNetState *pData)
1359	{
1360	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
1361	Log(("#%d pcnetInit: init_addr=0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
1362	PHYSADDR(pData, CSR_IADR(pData))));
1363
1364	/** @todo Documentation says that RCVRL and XMTRL are stored as two's complement!
1365	* Software is allowed to write these registers directly. */
1366	#define PCNET_INIT() do { \
1367	PDMDevHlpPhysRead(pDevIns, PHYSADDR(pData, CSR_IADR(pData)), \
1368	(uint8_t *)&initblk, sizeof(initblk)); \
1369	pData->aCSR[15] = le16_to_cpu(initblk.mode); \
1370	CSR_RCVRL(pData) = (initblk.rlen < 9) ? (1 << initblk.rlen) : 512; \
1371	CSR_XMTRL(pData) = (initblk.tlen < 9) ? (1 << initblk.tlen) : 512; \
1372	pData->aCSR[ 6] = (initblk.tlen << 12) \| (initblk.rlen << 8); \
1373	pData->aCSR[ 8] = le16_to_cpu(initblk.ladrf1); \
1374	pData->aCSR[ 9] = le16_to_cpu(initblk.ladrf2); \
1375	pData->aCSR[10] = le16_to_cpu(initblk.ladrf3); \
1376	pData->aCSR[11] = le16_to_cpu(initblk.ladrf4); \
1377	pData->aCSR[12] = le16_to_cpu(initblk.padr1); \
1378	pData->aCSR[13] = le16_to_cpu(initblk.padr2); \
1379	pData->aCSR[14] = le16_to_cpu(initblk.padr3); \
1380	pData->GCRDRA = PHYSADDR(pData, initblk.rdra); \
1381	pData->GCTDRA = PHYSADDR(pData, initblk.tdra); \
1382	} while (0)
1383
1384	if (BCR_SSIZE32(pData))
1385	{
1386	struct INITBLK32 initblk;
1387	pData->GCUpperPhys = 0;
1388	PCNET_INIT();
1389	Log(("#%d initblk.rlen=0x%02x, initblk.tlen=0x%02x\n",
1390	PCNETSTATE_2_DEVINS(pData)->iInstance, initblk.rlen, initblk.tlen));
1391	}
1392	else
1393	{
1394	struct INITBLK16 initblk;
1395	pData->GCUpperPhys = (0xff00 & (uint32_t)pData->aCSR[2]) << 16;
1396	PCNET_INIT();
1397	Log(("#%d initblk.rlen=0x%02x, initblk.tlen=0x%02x\n",
1398	PCNETSTATE_2_DEVINS(pData)->iInstance, initblk.rlen, initblk.tlen));
1399	}
1400
1401	#undef PCNET_INIT
1402
1403	if (pData->pDrv)
1404	pData->pDrv->pfnSetPromiscuousMode(pData->pDrv, CSR_PROM(pData));
1405
1406	CSR_RCVRC(pData) = CSR_RCVRL(pData);
1407	CSR_XMTRC(pData) = CSR_XMTRL(pData);
1408
1409	#ifdef PCNET_NO_POLLING
1410	pcnetUpdateRingHandlers(pData);
1411	#endif
1412
1413	/* Reset cached RX and TX states */
1414	CSR_CRST(pData) = CSR_CRBC(pData) = CSR_NRST(pData) = CSR_NRBC(pData) = 0;
1415	CSR_CXST(pData) = CSR_CXBC(pData) = CSR_NXST(pData) = CSR_NXBC(pData) = 0;
1416
1417	LogRel(("PCNet#%d: Init: ss32=%d GCRDRA=0x%08x[%d] GCTDRA=0x%08x[%d]\n",
1418	PCNETSTATE_2_DEVINS(pData)->iInstance, BCR_SSIZE32(pData),
1419	pData->GCRDRA, CSR_RCVRL(pData), pData->GCTDRA, CSR_XMTRL(pData)));
1420
1421	pData->aCSR[0] \|= 0x0101; /* Initialization done */
1422	pData->aCSR[0] &= ~0x0004; /* clear STOP bit */
1423	}
1424	#endif /* IN_RING3 */
1425
1426	/**
1427	* Start RX/TX operation.
1428	*/
1429	static void pcnetStart(PCNetState *pData)
1430	{
1431	Log(("%#d pcnetStart:\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
1432	if (!CSR_DTX(pData))
1433	pData->aCSR[0] \|= 0x0010; /* set TXON */
1434	if (!CSR_DRX(pData))
1435	pData->aCSR[0] \|= 0x0020; /* set RXON */
1436	pData->aCSR[0] &= ~0x0004; /* clear STOP bit */
1437	pData->aCSR[0] \|= 0x0002; /* STRT */
1438	}
1439
1440	/**
1441	* Stop RX/TX operation.
1442	*/
1443	static void pcnetStop(PCNetState *pData)
1444	{
1445	Log(("#%d pcnetStop:\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
1446	pData->aCSR[0] &= ~0x7feb;
1447	pData->aCSR[0] \|= 0x0014;
1448	pData->aCSR[4] &= ~0x02c2;
1449	pData->aCSR[5] &= ~0x0011;
1450	pcnetPollTimer(pData);
1451	}
1452
1453	#ifdef IN_RING3
1454	static DECLCALLBACK(bool) pcnetCanRxQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
1455	{
1456	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
1457	pData->pDrv->pfnNotifyCanReceive(pData->pDrv);
1458	return true;
1459	}
1460	#endif
1461
1462	/**
1463	* Poll Receive Descriptor Table Entry and cache the results in the appropriate registers.
1464	* Note: Once a descriptor belongs to the network card (this driver), it cannot be changed
1465	* by the host (the guest driver) anymore. Well, it could but the results are undefined by
1466	* definition.
1467	* @param fSkipCurrent if true, don't scan the current RDTE.
1468	*/
1469	static void pcnetRdtePoll(PCNetState *pData, bool fSkipCurrent=false)
1470	{
1471	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatRdtePoll), a);
1472	/* assume lack of a next receive descriptor */
1473	CSR_NRST(pData) = 0;
1474
1475	if (RT_LIKELY(pData->GCRDRA))
1476	{
1477	/*
1478	* The current receive message descriptor.
1479	*/
1480	RMD rmd;
1481	int i = CSR_RCVRC(pData);
1482	RTGCPHYS addr;
1483
1484	if (i < 1)
1485	i = CSR_RCVRL(pData);
1486
1487	if (!fSkipCurrent)
1488	{
1489	addr = pcnetRdraAddr(pData, i);
1490	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, addr));
1491	CSR_CRDA(pData) = CSR_CRBA(pData) = 0;
1492	CSR_CRBC(pData) = CSR_CRST(pData) = 0;
1493	if (!rmd.rmd1.own)
1494	{
1495	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatRdtePoll), a);
1496	return;
1497	}
1498	if (RT_LIKELY(!IS_RMD_BAD(rmd)))
1499	{
1500	CSR_CRDA(pData) = addr; /* Receive Descriptor Address */
1501	CSR_CRBA(pData) = rmd.rmd0.rbadr; /* Receive Buffer Address */
1502	CSR_CRBC(pData) = rmd.rmd1.bcnt; /* Receive Byte Count */
1503	CSR_CRST(pData) = ((uint32_t )&rmd)[1] >> 16; / Receive Status */
1504	#ifdef IN_RING3
1505	pData->pDrv->pfnNotifyCanReceive(pData->pDrv);
1506	#else
1507	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(CTXSUFF(pData->pCanRxQueue));
1508	if (pItem)
1509	PDMQueueInsert(CTXSUFF(pData->pCanRxQueue), pItem);
1510	#endif
1511	}
1512	else
1513	{
1514	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatRdtePoll), a);
1515	/* This is not problematic since we don't own the descriptor */
1516	LogRel(("PCNet#%d: BAD RMD ENTRIES AT 0x%08x (i=%d)\n",
1517	PCNETSTATE_2_DEVINS(pData)->iInstance, addr, i));
1518	return;
1519	}
1520	}
1521
1522	/*
1523	* The next descriptor.
1524	*/
1525	if (--i < 1)
1526	i = CSR_RCVRL(pData);
1527	addr = pcnetRdraAddr(pData, i);
1528	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, addr));
1529	CSR_NRDA(pData) = CSR_NRBA(pData) = 0;
1530	CSR_NRBC(pData) = 0;
1531	if (!rmd.rmd1.own)
1532	{
1533	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatRdtePoll), a);
1534	return;
1535	}
1536	if (RT_LIKELY(!IS_RMD_BAD(rmd)))
1537	{
1538	CSR_NRDA(pData) = addr; /* Receive Descriptor Address */
1539	CSR_NRBA(pData) = rmd.rmd0.rbadr; /* Receive Buffer Address */
1540	CSR_NRBC(pData) = rmd.rmd1.bcnt; /* Receive Byte Count */
1541	CSR_NRST(pData) = ((uint32_t )&rmd)[1] >> 16; / Receive Status */
1542	}
1543	else
1544	{
1545	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatRdtePoll), a);
1546	/* This is not problematic since we don't own the descriptor */
1547	LogRel(("PCNet#%d: BAD RMD ENTRIES + AT 0x%08x (i=%d)\n",
1548	PCNETSTATE_2_DEVINS(pData)->iInstance, addr, i));
1549	return;
1550	}
1551
1552	/**
1553	* @todo NNRD
1554	*/
1555	}
1556	else
1557	{
1558	CSR_CRDA(pData) = CSR_CRBA(pData) = CSR_NRDA(pData) = CSR_NRBA(pData) = 0;
1559	CSR_CRBC(pData) = CSR_NRBC(pData) = CSR_CRST(pData) = 0;
1560	}
1561	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatRdtePoll), a);
1562	}
1563
1564	/**
1565	* Poll Transmit Descriptor Table Entry
1566	* @return true if transmit descriptors available
1567	*/
1568	static int pcnetTdtePoll(PCNetState pData, TMD tmd)
1569	{
1570	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatTdtePoll), a);
1571	if (RT_LIKELY(pData->GCTDRA))
1572	{
1573	RTGCPHYS cxda = pcnetTdraAddr(pData, CSR_XMTRC(pData));
1574
1575	pcnetTmdLoad(pData, tmd, PHYSADDR(pData, cxda));
1576
1577	if (!tmd->tmd1.own)
1578	{
1579	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatTdtePoll), a);
1580	return 0;
1581	}
1582
1583	if (RT_UNLIKELY(tmd->tmd1.ones != 15))
1584	{
1585	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatTdtePoll), a);
1586	LogRel(("PCNet#%d: BAD TMD XDA=0x%08x\n",
1587	PCNETSTATE_2_DEVINS(pData)->iInstance, PHYSADDR(pData, cxda)));
1588	return 0;
1589	}
1590
1591	/* previous xmit descriptor */
1592	CSR_PXDA(pData) = CSR_CXDA(pData);
1593	CSR_PXBC(pData) = CSR_CXBC(pData);
1594	CSR_PXST(pData) = CSR_CXST(pData);
1595
1596	/* set current trasmit decriptor. */
1597	CSR_CXDA(pData) = cxda;
1598	CSR_CXBC(pData) = tmd->tmd1.bcnt;
1599	CSR_CXST(pData) = ((uint32_t *)tmd)[1] >> 16;
1600	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatTdtePoll), a);
1601	return CARD_IS_OWNER(CSR_CXST(pData));
1602	}
1603	else
1604	{
1605	/** @todo consistency with previous receive descriptor */
1606	CSR_CXDA(pData) = 0;
1607	CSR_CXBC(pData) = CSR_CXST(pData) = 0;
1608	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatTdtePoll), a);
1609	return 0;
1610	}
1611	}
1612
1613
1614	#ifdef IN_RING3
1615
1616	/**
1617	* Check if there is at least one free receive buffer available.
1618	*/
1619	static int pcnetCanReceiveNoSync(PCNetState *pData)
1620	{
1621	if (RT_UNLIKELY(CSR_DRX(pData) \|\| CSR_STOP(pData) \|\| CSR_SPND(pData)))
1622	return 0;
1623
1624	if (HOST_IS_OWNER(CSR_CRST(pData)) && pData->GCRDRA)
1625	pcnetRdtePoll(pData);
1626
1627	if (HOST_IS_OWNER(CSR_CRST(pData)))
1628	{
1629	/** @todo Notify the guest _now_. Will potentially increase the interrupt load */
1630	pData->aCSR[0] \|= 0x1000; /* Set MISS flag */
1631	return 0;
1632	}
1633
1634	/* byte count stored in two's complement 12 bits wide */
1635	Log(("#%d pcnetCanReceiveNoSync %d bytes\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
1636	4096 - CSR_CRBC(pData)));
1637	return 4096 - CSR_CRBC(pData);
1638	}
1639
1640	/**
1641	* Write data into guest receive buffers.
1642	*/
1643	static void pcnetReceiveNoSync(PCNetState pData, const uint8_t buf, int size)
1644	{
1645	PPDMDEVINS pDevIns = PCNETSTATE_2_DEVINS(pData);
1646	int is_padr = 0, is_bcast = 0, is_ladr = 0;
1647
1648	if (RT_UNLIKELY(CSR_DRX(pData) \|\| CSR_STOP(pData) \|\| CSR_SPND(pData) \|\| !size))
1649	return;
1650
1651	Log(("#%d pcnetReceiveNoSync: size=%d\n", PCNETSTATE_2_DEVINS(pData)->iInstance, size));
1652
1653	LOG_PACKET("rraw", buf, size);
1654
1655	/*
1656	* Perform address matching.
1657	*/
1658	if ( CSR_PROM(pData)
1659	\|\| (is_padr = padr_match(pData, buf, size))
1660	\|\| (is_bcast = padr_bcast(pData, buf, size))
1661	\|\| (is_ladr = ladr_match(pData, buf, size)))
1662	{
1663	if (HOST_IS_OWNER(CSR_CRST(pData)))
1664	pcnetRdtePoll(pData);
1665	if (RT_UNLIKELY(HOST_IS_OWNER(CSR_CRST(pData))))
1666	{
1667	/* Not owned by controller. This should not be possible as
1668	* we already called pcnetCanReceive(). */
1669	LogRel(("PCNet#%d: no buffer: RCVRC=%d\n",
1670	PCNETSTATE_2_DEVINS(pData)->iInstance, CSR_RCVRC(pData)));
1671	/* Dump the status of all RX descriptors */
1672	const unsigned cb = 1 << pData->iLog2DescSize;
1673	RTGCPHYS GCPhys = pData->GCRDRA;
1674	unsigned i = CSR_RCVRL(pData);
1675	while (i-- > 0)
1676	{
1677	RMD rmd;
1678	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, GCPhys));
1679	LogRel((" %08x\n", rmd.rmd1));
1680	GCPhys += cb;
1681	}
1682	pData->aCSR[0] \|= 0x1000; /* Set MISS flag */
1683	CSR_MISSC(pData)++;
1684	}
1685	else
1686	{
1687	uint8_t *src = &pData->abRecvBuf[8];
1688	RTGCPHYS crda = CSR_CRDA(pData);
1689	RMD rmd;
1690	int pktcount = 0;
1691
1692	memcpy(src, buf, size);
1693	if (!CSR_ASTRP_RCV(pData))
1694	{
1695	uint32_t fcs = ~0;
1696	uint8_t *p = src;
1697
1698	while (size < 60)
1699	src[size++] = 0;
1700	while (p != &src[size])
1701	CRC(fcs, *p++);
1702	((uint32_t *)&src[size])[0] = htonl(fcs);
1703	/* FCS at end of packet */
1704	}
1705	size += 4;
1706
1707	#ifdef PCNET_DEBUG_MATCH
1708	PRINT_PKTHDR(buf);
1709	#endif
1710
1711	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, crda));
1712	/if (!CSR_LAPPEN(pData))/
1713	rmd.rmd1.stp = 1;
1714
1715	int count = RT_MIN(4096 - (int)rmd.rmd1.bcnt, size);
1716	RTGCPHYS rbadr = PHYSADDR(pData, rmd.rmd0.rbadr);
1717	PDMDevHlpPhysWrite(pDevIns, rbadr, src, count);
1718	src += count;
1719	size -= count;
1720	rmd.rmd2.mcnt = count;
1721	pktcount++;
1722	if (size > 0)
1723	{
1724	if (HOST_IS_OWNER(CSR_NRST(pData)))
1725	{
1726	/* From the manual: ``Regardless of ownership of the second receive
1727	* descriptor, the Am79C972 controller will continue to perform receive
1728	* data DMA transfers to the first buffer. If the frame length exceeds
1729	* the length of the first buffer, and the Am79C972 controller does not
1730	* own the second buffer, ownership of the current descriptor will be
1731	* passed back to the system by writing a 0 to the OWN bit of RMD1.
1732	* Status will be written indicating buffer (BUFF = 1) and possibly
1733	* overflow (OFLO = 1) errors.
1734	* If the frame length exceeds the length of the first (current) buffer,
1735	* and the Am79C972 controller does own the second (next) buffer,
1736	* ownership will be passed back to the system by writing a 0 to the OWN
1737	* bit of RMD1 when the first buffer is full. The OWN bit is the only bit
1738	* modified in the descriptor. Receive data transfers to the second buffer
1739	* may occur before the Am79C972 controller proceeds to look ahead to the
1740	* ownership of the third buffer. Such action will depend upon the state
1741	* of the FIFO when the OWN bit has been updated in the first descriptor.
1742	* In any case, lookahead will be performed to the third buffer and the
1743	* information gathered will be stored in the chip, regardless of the state
1744	* of the ownership bit.'' */
1745	pcnetRdtePoll(pData, true);
1746	}
1747	if (CARD_IS_OWNER(CSR_NRST(pData)))
1748	{
1749	/* write back, clear the own bit */
1750	pcnetRmdStorePassHost(pData, &rmd, PHYSADDR(pData, crda));
1751	crda = CSR_NRDA(pData);
1752	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, crda));
1753	count = RT_MIN(4096 - (int)rmd.rmd1.bcnt, size);
1754	rbadr = PHYSADDR(pData, rmd.rmd0.rbadr);
1755	PDMDevHlpPhysWrite(pDevIns, rbadr, src, count);
1756	src += count;
1757	size -= count;
1758	rmd.rmd2.mcnt = count;
1759	pktcount++;
1760	}
1761	}
1762
1763	if (RT_LIKELY(size == 0))
1764	{
1765	rmd.rmd1.enp = 1;
1766	rmd.rmd1.pam = !CSR_PROM(pData) && is_padr;
1767	rmd.rmd1.lafm = !CSR_PROM(pData) && is_ladr;
1768	rmd.rmd1.bam = !CSR_PROM(pData) && is_bcast;
1769	}
1770	else
1771	{
1772	LogRel(("PCNet#%d: Overflow by %ubytes\n",
1773	PCNETSTATE_2_DEVINS(pData)->iInstance, size));
1774	rmd.rmd1.oflo = 1;
1775	rmd.rmd1.buff = 1;
1776	rmd.rmd1.err = 1;
1777	}
1778	/* write back, clear the own bit */
1779	pcnetRmdStorePassHost(pData, &rmd, PHYSADDR(pData, crda));
1780
1781	pData->aCSR[0] \|= 0x0400;
1782
1783	Log(("#%d RCVRC=%d CRDA=0x%08x BLKS=%d\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
1784	CSR_RCVRC(pData), PHYSADDR(pData, CSR_CRDA(pData)), pktcount));
1785	#ifdef PCNET_DEBUG_RMD
1786	PRINT_RMD(&rmd);
1787	#endif
1788
1789	while (pktcount--)
1790	{
1791	if (CSR_RCVRC(pData) < 2)
1792	CSR_RCVRC(pData) = CSR_RCVRL(pData);
1793	else
1794	CSR_RCVRC(pData)--;
1795	}
1796	/* guest driver is owner: force repoll of current and next RDTEs */
1797	CSR_CRST(pData) = 0;
1798	}
1799	}
1800
1801	/* see description of TXDPOLL:
1802	* ``transmit polling will take place following receive activities'' */
1803	pcnetPollRxTx(pData);
1804	pcnetUpdateIrq(pData);
1805	}
1806
1807
1808	/**
1809	* Checks if the link is up.
1810	* @returns true if the link is up.
1811	* @returns false if the link is down.
1812	*/
1813	DECLINLINE(bool) pcnetIsLinkUp(PCNetState *pData)
1814	{
1815	return pData->pDrv && !pData->fLinkTempDown && pData->fLinkUp;
1816	}
1817
1818
1819	/**
1820	* Transmit queue consumer
1821	* This is just a very simple way of delaying sending to R3.
1822	*
1823	* @returns Success indicator.
1824	* If false the item will not be removed and the flushing will stop.
1825	* @param pDevIns The device instance.
1826	* @param pItem The item to consume. Upon return this item will be freed.
1827	*/
1828	static DECLCALLBACK(bool) pcnetXmitQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
1829	{
1830	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
1831	NOREF(pItem);
1832
1833	/* Clear counter .*/
1834	ASMAtomicAndU32(&pData->cPendingSends, 0);
1835	int rc = RTSemEventSignal(pData->hSendEventSem);
1836	AssertRC(rc);
1837	return true;
1838	}
1839
1840
1841	/**
1842	* Scraps the top frame.
1843	* This is done as a precaution against mess left over by on
1844	*/
1845	DECLINLINE(void) pcnetXmitScrapFrame(PCNetState *pData)
1846	{
1847	pData->SendFrame.pvBuf = NULL;
1848	pData->SendFrame.cb = -1;
1849	}
1850
1851
1852	/**
1853	* If we are in RING3 don't copy the frame from GC here but only store the address. We
1854	* don't need to buffer the frames because a direct address translation was possible.
1855	*/
1856	DECLINLINE(void) pcnetXmitZeroCopyFrame(PCNetState *pData, RTR3PTR pv, const unsigned cbFrame)
1857	{
1858	pData->SendFrame.pvBuf = pv;
1859	pData->SendFrame.cb = cbFrame;
1860	}
1861
1862
1863	/**
1864	* Reads the first part of a frame
1865	*/
1866	DECLINLINE(void) pcnetXmitRead1st(PCNetState *pData, RTGCPHYS GCPhysFrame, const unsigned cbFrame)
1867	{
1868	Assert(cbFrame < sizeof(pData->abSendBuf));
1869
1870	PDMDevHlpPhysRead(pData->CTXSUFF(pDevIns), GCPhysFrame,
1871	&pData->abSendBuf[0],
1872	cbFrame);
1873	pData->SendFrame.pvBuf = pData->abSendBuf;
1874	pData->SendFrame.cb = cbFrame;
1875	}
1876
1877
1878	/**
1879	* Reads more into the current frame.
1880	*/
1881	DECLINLINE(void) pcnetXmitReadMore(PCNetState *pData, RTGCPHYS GCPhysFrame, const unsigned cbFrame)
1882	{
1883	Assert(pData->SendFrame.cb + cbFrame < sizeof(pData->abSendBuf));
1884	PDMDevHlpPhysRead(pData->CTXSUFF(pDevIns), GCPhysFrame,
1885	&pData->abSendBuf[pData->SendFrame.cb],
1886	cbFrame);
1887	pData->SendFrame.cb += cbFrame;
1888	}
1889
1890
1891	/**
1892	* Completes the current frame.
1893	* If we've reached the maxium number of frames, they will be flushed.
1894	*/
1895	DECLINLINE(int) pcnetXmitCompleteFrame(PCNetState *pData)
1896	{
1897	/* Don't hold the critical section while transmitting data. */
1898	/** @note also avoids deadlocks with NAT as it can call us right back. */
1899	PDMCritSectLeave(&pData->CritSect);
1900
1901	STAM_PROFILE_ADV_START(&pData->StatTransmitSend, a);
1902	pData->pDrv->pfnSend(pData->pDrv, pData->SendFrame.pvBuf, pData->SendFrame.cb);
1903	STAM_PROFILE_ADV_STOP(&pData->StatTransmitSend, a);
1904
1905	return PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
1906	}
1907
1908
1909	/**
1910	* Fails a TMD with a link down error.
1911	*/
1912	static void pcnetXmitFailTMDLinkDown(PCNetState pData, TMD pTmd)
1913	{
1914	/* make carrier error - hope this is correct. */
1915	pData->cLinkDownReported++;
1916	pTmd->tmd2.lcar = pTmd->tmd1.err = 1;
1917	pData->aCSR[0] \|= BIT(15) \| BIT(13); /* ERR \| CERR */
1918	pData->Led.Asserted.s.fError = pData->Led.Actual.s.fError = 1;
1919	Log(("#%d pcnetTransmit: Signaling send error. swstyle=%#x\n",
1920	PCNETSTATE_2_DEVINS(pData)->iInstance, pData->aBCR[BCR_SWS]));
1921	}
1922
1923	/**
1924	* Fails a TMD with a generic error.
1925	*/
1926	static void pcnetXmitFailTMDGeneric(PCNetState pData, TMD pTmd)
1927	{
1928	/* make carrier error - hope this is correct. */
1929	pTmd->tmd2.lcar = pTmd->tmd1.err = 1;
1930	pData->aCSR[0] \|= BIT(15) \| BIT(13); /* ERR \| CERR */
1931	pData->Led.Asserted.s.fError = pData->Led.Actual.s.fError = 1;
1932	Log(("#%d pcnetTransmit: Signaling send error. swstyle=%#x\n",
1933	PCNETSTATE_2_DEVINS(pData)->iInstance, pData->aBCR[BCR_SWS]));
1934	}
1935
1936
1937	/**
1938	* Transmit a loopback frame.
1939	*/
1940	DECLINLINE(void) pcnetXmitLoopbackFrame(PCNetState *pData)
1941	{
1942	pData->Led.Asserted.s.fReading = pData->Led.Actual.s.fReading = 1;
1943	if (HOST_IS_OWNER(CSR_CRST(pData)))
1944	pcnetRdtePoll(pData);
1945
1946	Assert(pData->SendFrame.pvBuf);
1947	pcnetReceiveNoSync(pData, (const uint8_t *)pData->SendFrame.pvBuf, pData->SendFrame.cb);
1948	pcnetXmitScrapFrame(pData);
1949	pData->Led.Actual.s.fReading = 0;
1950	}
1951
1952	/**
1953	* Flushes queued frames.
1954	*/
1955	DECLINLINE(void) pcnetXmitFlushFrames(PCNetState *pData)
1956	{
1957	pcnetXmitQueueConsumer(CTXSUFF(pData->pDevIns), NULL);
1958	}
1959
1960	#endif /* IN_RING3 */
1961
1962
1963
1964	/**
1965	* Try to transmit frames
1966	*/
1967	static void pcnetTransmit(PCNetState *pData)
1968	{
1969	if (RT_UNLIKELY(!CSR_TXON(pData)))
1970	{
1971	pData->aCSR[0] &= ~0x0008; /* Clear TDMD */
1972	return;
1973	}
1974
1975	/*
1976	* Check the current transmit descriptors.
1977	*/
1978	TMD tmd;
1979	if (!pcnetTdtePoll(pData, &tmd))
1980	return;
1981
1982	/* Update TDMD, TXSTRT and TINT. */
1983	pData->aCSR[0] &= ~0x0008; /* clear TDMD */
1984
1985	/*
1986	* If we're in Ring-3 we should flush the queue now, in GC/R0 we'll queue a flush job.
1987	*/
1988	#ifdef IN_RING3
1989	pcnetXmitFlushFrames(pData);
1990	#else
1991	# if 1
1992	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(CTXSUFF(pData->pXmitQueue));
1993	if (RT_UNLIKELY(pItem))
1994	PDMQueueInsert(CTXSUFF(pData->pXmitQueue), pItem);
1995	# else
1996	if (ASMAtomicIncU32(&pData->cPendingSends) < 16)
1997	{
1998	PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(CTXSUFF(pData->pXmitQueue));
1999	if (RT_UNLIKELY(pItem))
2000	PDMQueueInsert(CTXSUFF(pData->pXmitQueue), pItem);
2001	}
2002	else
2003	PDMQueueFlush(CTXSUFF(pData->pXmitQueue));
2004	# endif
2005	#endif
2006	}
2007
2008	#ifdef IN_RING3
2009
2010	/**
2011	* Try to transmit frames
2012	*/
2013	static int pcnetAsyncTransmit(PCNetState *pData)
2014	{
2015	unsigned cFlushIrq = 0;
2016
2017	Assert(PDMCritSectIsOwner(&pData->CritSect));
2018
2019	if (RT_UNLIKELY(!CSR_TXON(pData)))
2020	{
2021	pData->aCSR[0] &= ~0x0008; /* Clear TDMD */
2022	return VINF_SUCCESS;
2023	}
2024
2025	/*
2026	* Iterate the transmit descriptors.
2027	*/
2028	STAM_PROFILE_ADV_START(&pData->StatTransmit, a);
2029	do
2030	{
2031	#ifdef VBOX_WITH_STATISTICS
2032	unsigned cBuffers = 1;
2033	#endif
2034	TMD tmd;
2035	if (!pcnetTdtePoll(pData, &tmd))
2036	break;
2037
2038	/* Don't continue sending packets when the link is down. */
2039	if (RT_UNLIKELY( !pcnetIsLinkUp(pData)
2040	&& pData->cLinkDownReported > PCNET_MAX_LINKDOWN_REPORTED)
2041	)
2042	break;
2043
2044	#ifdef PCNET_DEBUG_TMD
2045	Log2(("#%d TMDLOAD 0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, PHYSADDR(pData, CSR_CXDA(pData))));
2046	PRINT_TMD(&tmd);
2047	#endif
2048	pcnetXmitScrapFrame(pData);
2049
2050	/*
2051	* The typical case - a complete packet.
2052	* This can be performed with zero copy in Ring-3.
2053	*/
2054	if (tmd.tmd1.stp && tmd.tmd1.enp)
2055	{
2056	const unsigned cb = 4096 - tmd.tmd1.bcnt;
2057	Log(("#%d pcnetTransmit: stp&enp: cb=%d xmtrc=%#x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, cb, CSR_XMTRC(pData)));
2058
2059	if (RT_LIKELY(pcnetIsLinkUp(pData) \|\| CSR_LOOP(pData)))
2060	{
2061	RTR3PTR pv;
2062
2063	/* From the manual: ``A zero length buffer is acceptable as
2064	* long as it is not the last buffer in a chain (STP = 0 and
2065	* ENP = 1).'' That means that the first buffer might have a
2066	* zero length if it is not the last one in the chain. */
2067	if (RT_LIKELY(cb <= 1536))
2068	{
2069	int rc = PDMDevHlpPhys2HCVirt(pData->pDevInsHC,
2070	PHYSADDR(pData, tmd.tmd0.tbadr), cb, &pv);
2071	if (RT_SUCCESS(rc))
2072	pcnetXmitZeroCopyFrame(pData, pv, cb);
2073	else
2074	{
2075	pcnetXmitRead1st(pData, PHYSADDR(pData, tmd.tmd0.tbadr), cb);
2076	}
2077	if (CSR_LOOP(pData))
2078	pcnetXmitLoopbackFrame(pData);
2079	else
2080	{
2081	int rc = pcnetXmitCompleteFrame(pData);
2082	if (VBOX_FAILURE(rc))
2083	return rc; /* can happen during termination */
2084	}
2085	}
2086	else if (cb == 4096)
2087	{
2088	/* The Windows NT4 pcnet driver sometimes marks the first
2089	* unused descriptor as owned by us. Ignore that (by
2090	* passing it back). Do not update the ring counter in this
2091	* case (otherwise that driver becomes even more confused,
2092	* which causes transmit to stall for about 10 seconds).
2093	* This is just a workaround, not a final solution. */
2094	/* r=frank: IMHO this is the correct implementation. The
2095	* manual says: ``If the OWN bit is set and the buffer
2096	* length is 0, the OWN bit will be cleared. In the C-LANCE
2097	* the buffer length of 0 is interpreted as a 4096-byte
2098	* buffer.'' */
2099	LogRel(("PCNET: pcnetAsyncTransmit: illegal 4kb frame -> ignoring\n"));
2100	pcnetTmdStorePassHost(pData, &tmd, PHYSADDR(pData, CSR_CXDA(pData)));
2101	break;
2102	}
2103	else
2104	{
2105	/* Signal error, as this violates the Ethernet specs. */
2106	/** @todo check if the correct error is generated. */
2107	LogRel(("PCNET: pcnetAsyncTransmit: illegal 4kb frame -> signalling error\n"));
2108
2109	pcnetXmitFailTMDGeneric(pData, &tmd);
2110	}
2111	}
2112	else
2113	pcnetXmitFailTMDLinkDown(pData, &tmd);
2114
2115	/* Write back the TMD and pass it to the host (clear own bit). */
2116	pcnetTmdStorePassHost(pData, &tmd, PHYSADDR(pData, CSR_CXDA(pData)));
2117
2118	/* advance the ring counter register */
2119	if (CSR_XMTRC(pData) < 2)
2120	CSR_XMTRC(pData) = CSR_XMTRL(pData);
2121	else
2122	CSR_XMTRC(pData)--;
2123	}
2124	else if (tmd.tmd1.stp)
2125	{
2126	/*
2127	* Read TMDs until end-of-packet or tdte poll fails (underflow).
2128	*/
2129	const unsigned cbMaxFrame = 1536;
2130	bool fDropFrame = false;
2131	unsigned cb = 4096 - tmd.tmd1.bcnt;
2132	pcnetXmitRead1st(pData, PHYSADDR(pData, tmd.tmd0.tbadr), cb);
2133	for (;;)
2134	{
2135	/*
2136	* Advance the ring counter register and check the next tmd.
2137	*/
2138	#ifdef LOG_ENABLED
2139	const uint32_t iStart = CSR_XMTRC(pData);
2140	#endif
2141	const uint32_t GCPhysPrevTmd = PHYSADDR(pData, CSR_CXDA(pData));
2142	if (CSR_XMTRC(pData) < 2)
2143	CSR_XMTRC(pData) = CSR_XMTRL(pData);
2144	else
2145	CSR_XMTRC(pData)--;
2146
2147	TMD dummy;
2148	if (!pcnetTdtePoll(pData, &dummy))
2149	{
2150	/*
2151	* Underflow!
2152	*/
2153	tmd.tmd2.buff = tmd.tmd2.uflo = tmd.tmd1.err = 1;
2154	pData->aCSR[0] \|= 0x0200; /* set TINT */
2155	if (!CSR_DXSUFLO(pData)) /* stop on xmit underflow */
2156	pData->aCSR[0] &= ~0x0010; /* clear TXON */
2157	pcnetTmdStorePassHost(pData, &tmd, GCPhysPrevTmd);
2158	AssertMsgFailed(("pcnetTransmit: Underflow!!!\n"));
2159	break;
2160	}
2161
2162	/* release & save the previous tmd, pass it to the host */
2163	pcnetTmdStorePassHost(pData, &tmd, GCPhysPrevTmd);
2164
2165	/*
2166	* The next tdm.
2167	*/
2168	#ifdef VBOX_WITH_STATISTICS
2169	cBuffers++;
2170	#endif
2171	pcnetTmdLoad(pData, &tmd, PHYSADDR(pData, CSR_CXDA(pData)));
2172	cb = 4096 - tmd.tmd1.bcnt;
2173	if ( pData->SendFrame.cb + cb < cbMaxFrame
2174	&& !fDropFrame)
2175	pcnetXmitReadMore(pData, PHYSADDR(pData, tmd.tmd0.tbadr), cb);
2176	else
2177	{
2178	AssertMsg(fDropFrame, ("pcnetTransmit: Frame is too big!!! %d bytes\n",
2179	pData->SendFrame.cb + cb));
2180	fDropFrame = true;
2181	}
2182	if (tmd.tmd1.enp)
2183	{
2184	Log(("#%d pcnetTransmit: stp: cb=%d xmtrc=%#x-%#x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2185	pData->SendFrame.cb, iStart, CSR_XMTRC(pData)));
2186	if (pcnetIsLinkUp(pData) && !fDropFrame)
2187	{
2188	int rc = pcnetXmitCompleteFrame(pData);
2189	if (VBOX_FAILURE(rc))
2190	return rc; /* can happen during termination */
2191	}
2192	else if (CSR_LOOP(pData) && !fDropFrame)
2193	pcnetXmitLoopbackFrame(pData);
2194	else
2195	{
2196	if (!fDropFrame)
2197	pcnetXmitFailTMDLinkDown(pData, &tmd);
2198	pcnetXmitScrapFrame(pData);
2199	}
2200
2201	/* Write back the TMD, pass it to the host */
2202	pcnetTmdStorePassHost(pData, &tmd, PHYSADDR(pData, CSR_CXDA(pData)));
2203
2204	/* advance the ring counter register */
2205	if (CSR_XMTRC(pData) < 2)
2206	CSR_XMTRC(pData) = CSR_XMTRL(pData);
2207	else
2208	CSR_XMTRC(pData)--;
2209	break;
2210	}
2211	}
2212	}
2213	else
2214	{
2215	/*
2216	* We underflowed in a previous transfer, or the driver is giving us shit.
2217	* Simply stop the transmitting for now.
2218	*/
2219	/** @todo according to the specs we're supposed to clear the own bit and move on to the next one. */
2220	Log(("#%d pcnetTransmit: guest is giving us shit!\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
2221	break;
2222	}
2223	/* Update TDMD, TXSTRT and TINT. */
2224	pData->aCSR[0] &= ~0x0008; /* clear TDMD */
2225
2226	pData->aCSR[4] \|= 0x0004; /* set TXSTRT */
2227	if ( !CSR_TOKINTD(pData) /* Transmit OK Interrupt Disable, no infl. on errors. */
2228	\|\| (CSR_LTINTEN(pData) && tmd.tmd1.ltint)
2229	\|\| tmd.tmd1.err)
2230	{
2231	cFlushIrq++;
2232	pData->aCSR[0] \|= 0x0200; /* set TINT */
2233	}
2234
2235	/** @todo should we continue after an error (tmd.tmd1.err) or not? */
2236
2237	STAM_COUNTER_INC(&pData->aStatXmitChainCounts[RT_MIN(cBuffers,
2238	ELEMENTS(pData->aStatXmitChainCounts)) - 1]);
2239	} while (CSR_TXON(pData)); /* transfer on */
2240
2241	if (cFlushIrq)
2242	{
2243	STAM_COUNTER_INC(&pData->aStatXmitFlush[RT_MIN(cFlushIrq, ELEMENTS(pData->aStatXmitFlush)) - 1]);
2244	pcnetUpdateIrq(pData);
2245	}
2246
2247	STAM_PROFILE_ADV_STOP(&pData->StatTransmit, a);
2248
2249	return VINF_SUCCESS;
2250	}
2251
2252	/**
2253	* Async I/O thread for delayed sending of packets.
2254	*/
2255	static DECLCALLBACK(int) pcnetAsyncSend(RTTHREAD ThreadSelf, void *pvUser)
2256	{
2257	PCNetState pData = (PCNetState )pvUser;
2258	RTSEMEVENT hEvent = pData->hSendEventSem;
2259	int rc = VINF_SUCCESS;
2260
2261	while(rc == VINF_SUCCESS)
2262	{
2263	rc = RTSemEventWait(hEvent, RT_INDEFINITE_WAIT);
2264	if (VBOX_FAILURE(rc))
2265	break;
2266
2267	rc = PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
2268	AssertReleaseRC(rc);
2269
2270	if (!pData->fSaving)
2271	rc = pcnetAsyncTransmit(pData);
2272
2273	PDMCritSectLeave(&pData->CritSect);
2274	}
2275	return VINF_SUCCESS;
2276	}
2277
2278	#endif /* IN_RING3 */
2279
2280	/**
2281	* Poll for changes in RX and TX descriptor rings.
2282	*/
2283	static void pcnetPollRxTx(PCNetState *pData)
2284	{
2285	if (CSR_RXON(pData))
2286	if (HOST_IS_OWNER(CSR_CRST(pData))) /* Only poll RDTEs if none available */
2287	pcnetRdtePoll(pData);
2288
2289	if (CSR_TDMD(pData) \|\| CSR_TXON(pData) && !CSR_DPOLL(pData))
2290	pcnetTransmit(pData);
2291	}
2292
2293	/**
2294	* Update the poller timer
2295	* @thread EMT,
2296	*/
2297	static void pcnetPollTimer(PCNetState *pData)
2298	{
2299	STAM_PROFILE_ADV_START(&pData->StatPollTimer, a);
2300
2301	#ifdef LOG_ENABLED
2302	TMD dummy;
2303	Log2(("#%d pcnetPollTimer time=%08x TDMD=%d TXON=%d POLL=%d TDTE=%d TDRA=%x\n",
2304	PCNETSTATE_2_DEVINS(pData)->iInstance, RTTimeMilliTS(), CSR_TDMD(pData), CSR_TXON(pData),
2305	!CSR_DPOLL(pData), pcnetTdtePoll(pData, &dummy), pData->GCTDRA));
2306	Log2(("#%d pcnetPollTimer: CSR_CXDA=%x CSR_XMTRL=%d CSR_XMTRC=%d\n",
2307	PCNETSTATE_2_DEVINS(pData)->iInstance, CSR_CXDA(pData), CSR_XMTRL(pData), CSR_XMTRC(pData)));
2308	#endif
2309	#ifdef PCNET_DEBUG_TMD
2310	if (CSR_CXDA(pData))
2311	{
2312	TMD tmd;
2313	pcnetTmdLoad(pData, &tmd, PHYSADDR(pData, CSR_CXDA(pData)));
2314	Log2(("#%d pcnetPollTimer: TMDLOAD 0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, PHYSADDR(pData, CSR_CXDA(pData))));
2315	PRINT_TMD(&tmd);
2316	}
2317	#endif
2318	if (CSR_TDMD(pData))
2319	pcnetTransmit(pData);
2320
2321	pcnetUpdateIrq(pData);
2322
2323	if (RT_LIKELY(!CSR_STOP(pData) && !CSR_SPND(pData) && !CSR_DPOLL(pData)))
2324	{
2325	/* We ensure that we poll at least every 2ms (500Hz) but not more often than
2326	* 5000 times per second. This way we completely prevent the overhead from
2327	* heavy reprogramming the timer which turned out to be very CPU-intensive.
2328	* The drawback is that csr46 and csr47 are not updated properly anymore
2329	* but so far I have not seen any guest depending on these values. The 2ms
2330	* interval is the default polling interval of the PCNet card (65536/33MHz). */
2331	#ifdef PCNET_NO_POLLING
2332	pcnetPollRxTx(pData);
2333	#else
2334	uint64_t u64Now = TMTimerGet(pData->CTXSUFF(pTimerPoll));
2335	if (RT_UNLIKELY(u64Now - pData->u64LastPoll > 200000))
2336	{
2337	pData->u64LastPoll = u64Now;
2338	pcnetPollRxTx(pData);
2339	}
2340	if (!TMTimerIsActive(pData->CTXSUFF(pTimerPoll)))
2341	/* Poll timer interval is fixed to 500Hz. Don't stop it. */
2342	TMTimerSet(pData->CTXSUFF(pTimerPoll),
2343	TMTimerGet(pData->CTXSUFF(pTimerPoll)) + 2000000);
2344	#endif
2345	}
2346	STAM_PROFILE_ADV_STOP(&pData->StatPollTimer, a);
2347	}
2348
2349
2350	static int pcnetCSRWriteU16(PCNetState *pData, uint32_t u32RAP, uint32_t new_value)
2351	{
2352	uint16_t val = new_value;
2353	int rc = VINF_SUCCESS;
2354	#ifdef PCNET_DEBUG_CSR
2355	Log(("#%d pcnetCSRWriteU16: rap=%d val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2356	#endif
2357	switch (u32RAP)
2358	{
2359	case 0:
2360	{
2361	uint16_t csr0 = pData->aCSR[0];
2362	/* Clear any interrupt flags.
2363	* Don't clear an interrupt flag which was not seen by the guest yet. */
2364	csr0 &= ~(val & 0x7f00 & pData->u16CSR0LastSeenByGuest);
2365	csr0 = (csr0 & ~0x0040) \| (val & 0x0048);
2366	val = (val & 0x007f) \| (csr0 & 0x7f00);
2367
2368	/* Iff STOP, STRT and INIT are set, clear STRT and INIT */
2369	if ((val & 7) == 7)
2370	val &= ~3;
2371
2372	#ifndef IN_RING3
2373	if (!(csr0 & 0x0001/init/) && (val & 1))
2374	{
2375	Log(("#%d pcnetCSRWriteU16: pcnetInit requested => HC\n", PCNETSTATE_2_DEVINS(pData)->iInstance));
2376	return VINF_IOM_HC_IOPORT_WRITE;
2377	}
2378	#endif
2379	LOG_REGISTER(("PCNet#%d: WRITE CSR%d, %04x => %04x (%04x)\n",
2380	PCNETSTATE_2_DEVINS(pData)->iInstance,
2381	u32RAP, new_value, csr0, pData->aCSR[0]));
2382	pData->aCSR[0] = csr0;
2383
2384	if (!CSR_STOP(pData) && (val & 4))
2385	pcnetStop(pData);
2386
2387	#ifdef IN_RING3
2388	if (!CSR_INIT(pData) && (val & 1))
2389	pcnetInit(pData);
2390	#endif
2391
2392	if (!CSR_STRT(pData) && (val & 2))
2393	pcnetStart(pData);
2394
2395	if (CSR_TDMD(pData))
2396	pcnetTransmit(pData);
2397
2398	return rc;
2399	}
2400	case 1: /* IADRL */
2401	case 2: /* IADRH */
2402	case 8: /* LADRF 0..15 */
2403	case 9: /* LADRF 16..31 */
2404	case 10: /* LADRF 32..47 */
2405	case 11: /* LADRF 48..63 */
2406	case 12: /* PADR 0..15 */
2407	case 13: /* PADR 16..31 */
2408	case 14: /* PADR 32..47 */
2409	case 18: /* CRBAL */
2410	case 19: /* CRBAU */
2411	case 20: /* CXBAL */
2412	case 21: /* CXBAU */
2413	case 22: /* NRBAL */
2414	case 23: /* NRBAU */
2415	case 24: /* BADRL */
2416	case 25: /* BADRU */
2417	case 26: /* NRDAL */
2418	case 27: /* NRDAU */
2419	case 28: /* CRDAL */
2420	case 29: /* CRDAU */
2421	case 30: /* BADXL */
2422	case 31: /* BADXU */
2423	case 32: /* NXDAL */
2424	case 33: /* NXDAU */
2425	case 34: /* CXDAL */
2426	case 35: /* CXDAU */
2427	case 36: /* NNRDL */
2428	case 37: /* NNRDU */
2429	case 38: /* NNXDL */
2430	case 39: /* NNXDU */
2431	case 40: /* CRBCL */
2432	case 41: /* CRBCU */
2433	case 42: /* CXBCL */
2434	case 43: /* CXBCU */
2435	case 44: /* NRBCL */
2436	case 45: /* NRBCU */
2437	case 46: /* POLL */
2438	case 47: /* POLLINT */
2439	case 72: /* RCVRC */
2440	case 74: /* XMTRC */
2441	case 76: /* RCVRL / /* @todo call pcnetUpdateRingHandlers */
2442	/** @todo receive ring length is stored in two's complement! */
2443	case 78: /* XMTRL / /* @todo call pcnetUpdateRingHandlers */
2444	/** @todo transmit ring length is stored in two's complement! */
2445	case 112: /* MISSC */
2446	if (CSR_STOP(pData) \|\| CSR_SPND(pData))
2447	break;
2448	LOG_REGISTER(("PCNet#%d: WRITE CSR%d, %04x\n",
2449	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2450	return rc;
2451	case 3: /* Interrupt Mask and Deferral Control */
2452	LOG_REGISTER(("PCNet#%d: WRITE CSR%d, %04x\n",
2453	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2454	break;
2455	case 4: /* Test and Features Control */
2456	LOG_REGISTER(("PCNet#%d: WRITE CSR%d, %04x\n",
2457	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2458	pData->aCSR[4] &= ~(val & 0x026a);
2459	val &= ~0x026a;
2460	val \|= pData->aCSR[4] & 0x026a;
2461	break;
2462	case 5: /* Extended Control and Interrupt 1 */
2463	LOG_REGISTER(("PCNet#%d: WRITE CSR%d, %04x\n",
2464	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2465	pData->aCSR[5] &= ~(val & 0x0a90);
2466	val &= ~0x0a90;
2467	val \|= pData->aCSR[5] & 0x0a90;
2468	break;
2469	case 15: /* Mode */
2470	if ((pData->aCSR[15] & 0x8000) != (val & 0x8000) && pData->pDrv)
2471	{
2472	Log(("PCNet#%d: promiscuous mode changed to %d\n",
2473	PCNETSTATE_2_DEVINS(pData)->iInstance, !!(val & 0x8000)));
2474	#ifndef IN_RING3
2475	return VINF_IOM_HC_IOPORT_WRITE;
2476	#else
2477	/* check for promiscuous mode change */
2478	pData->pDrv->pfnSetPromiscuousMode(pData->pDrv, !!(val & 0x8000));
2479	#endif
2480	}
2481	break;
2482	case 16: /* IADRL */
2483	return pcnetCSRWriteU16(pData, 1, val);
2484	case 17: /* IADRH */
2485	return pcnetCSRWriteU16(pData, 2, val);
2486	case 58: /* Software Style */
2487	LOG_REGISTER(("PCNet#%d: WRITE SW_STYLE, %04x\n",
2488	PCNETSTATE_2_DEVINS(pData)->iInstance, val));
2489	rc = pcnetBCRWriteU16(pData, BCR_SWS, val);
2490	break;
2491	default:
2492	return rc;
2493	}
2494	pData->aCSR[u32RAP] = val;
2495	return rc;
2496	}
2497
2498	static uint32_t pcnetCSRReadU16(PCNetState *pData, uint32_t u32RAP)
2499	{
2500	uint32_t val;
2501	switch (u32RAP)
2502	{
2503	case 0:
2504	pcnetUpdateIrq(pData);
2505	val = pData->aCSR[0];
2506	val \|= (val & 0x7800) ? 0x8000 : 0;
2507	pData->u16CSR0LastSeenByGuest = val;
2508	break;
2509	case 16:
2510	return pcnetCSRReadU16(pData, 1);
2511	case 17:
2512	return pcnetCSRReadU16(pData, 2);
2513	case 58:
2514	return pcnetBCRReadU16(pData, BCR_SWS);
2515	case 88:
2516	val = pData->aCSR[89];
2517	val <<= 16;
2518	val \|= pData->aCSR[88];
2519	break;
2520	default:
2521	val = pData->aCSR[u32RAP];
2522	LOG_REGISTER(("PCNet#%d: read CSR%d => %04x\n",
2523	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2524	}
2525	#ifdef PCNET_DEBUG_CSR
2526	Log(("#%d pcnetCSRReadU16: u32RAP=%d val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2527	u32RAP, val));
2528	#endif
2529	return val;
2530	}
2531
2532	static int pcnetBCRWriteU16(PCNetState *pData, uint32_t u32RAP, uint32_t val)
2533	{
2534	int rc = VINF_SUCCESS;
2535	u32RAP &= 0x7f;
2536	#ifdef PCNET_DEBUG_BCR
2537	Log2(("#%d pcnetBCRWriteU16: u32RAP=%d val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2538	u32RAP, val));
2539	#endif
2540	switch (u32RAP)
2541	{
2542	case BCR_SWS:
2543	if (!(CSR_STOP(pData) \|\| CSR_SPND(pData)))
2544	return rc;
2545	val &= ~0x0300;
2546	switch (val & 0x00ff)
2547	{
2548	default:
2549	Log(("Bad SWSTYLE=0x%02x\n", val & 0xff));
2550	// fall through
2551	case 0:
2552	val \|= 0x0200; /* 16 bit */
2553	pData->iLog2DescSize = 3;
2554	pData->GCUpperPhys = (0xff00 & (uint32_t)pData->aCSR[2]) << 16;
2555	break;
2556	case 1:
2557	val \|= 0x0100; /* 32 bit */
2558	pData->iLog2DescSize = 4;
2559	pData->GCUpperPhys = 0;
2560	break;
2561	case 2:
2562	case 3:
2563	val \|= 0x0300; /* 32 bit */
2564	pData->iLog2DescSize = 4;
2565	pData->GCUpperPhys = 0;
2566	break;
2567	}
2568	LOG_REGISTER(("PCNet#%d: WRITE SW_STYLE, %04x\n",
2569	PCNETSTATE_2_DEVINS(pData)->iInstance, val));
2570	Log(("BCR_SWS=0x%04x\n", val));
2571	pData->aCSR[58] = val;
2572	/* fall through */
2573	case BCR_LNKST:
2574	case BCR_LED1:
2575	case BCR_LED2:
2576	case BCR_LED3:
2577	case BCR_MC:
2578	case BCR_FDC:
2579	case BCR_BSBC:
2580	case BCR_EECAS:
2581	case BCR_PLAT:
2582	case BCR_MIIADDR:
2583	LOG_REGISTER(("PCNet#%d: WRITE BCR%d, %04x\n",
2584	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2585	pData->aBCR[u32RAP] = val;
2586	break;
2587
2588	case BCR_MIIMDR:
2589	LOG_REGISTER(("PCNet#%d: WRITE MII%d, %04x\n",
2590	PCNETSTATE_2_DEVINS(pData)->iInstance, u32RAP, val));
2591	pData->aMII[pData->aBCR[BCR_MIIADDR] & 0x1f] = val;
2592	break;
2593
2594	default:
2595	break;
2596	}
2597	return rc;
2598	}
2599
2600	static uint32_t pcnetMIIReadU16(PCNetState *pData, uint32_t miiaddr)
2601	{
2602	uint32_t val;
2603	STAM_COUNTER_INC(&pData->StatMIIReads);
2604
2605	switch (miiaddr)
2606	{
2607	case 0:
2608	/* MII basic mode control register. */
2609	val = 0x1000; /* Enable auto negotiation. */
2610	break;
2611
2612	case 1:
2613	/* MII basic mode status register. */
2614	if (pData->fLinkUp && !pData->fLinkTempDown)
2615	val = 0x7800 /* Can do 100mbps FD/HD and 10mbps FD/HD. */
2616	\| 0x0020 /* Auto-negotiation complete. */
2617	\| 0x0008 /* Able to do auto-negotiation. */
2618	\| 0x0004 /* Link status. */
2619	\| 0x0001; /* Extended Capability, i.e. registers 4+ valid. */
2620	else
2621	{
2622	val = 0x7800 /* Can do 100mbps FD/HD and 10mbps FD/HD. */
2623	\| 0x0008 /* Able to do auto-negotiation. */
2624	\| 0x0001; /* Extended Capability, i.e. registers 4+ valid. */
2625	pData->cLinkDownReported++;
2626	}
2627	break;
2628
2629	case 2:
2630	/* PHY identifier 1. */
2631	val = 0; /* No name PHY. */
2632	break;
2633
2634	case 3:
2635	/* PHY identifier 2. */
2636	val = 0; /* No name PHY. */
2637	break;
2638
2639	case 4:
2640	/* Advertisement control register. */
2641	val = 0x05e0 /* Try flow control, 100mbps FD/HD and 10mbps FD/HD. */
2642	\| 0x0001; /* CSMA selector. */
2643	break;
2644
2645	case 5:
2646	/* Link partner ability register. */
2647	if (pData->fLinkUp && !pData->fLinkTempDown)
2648	val = 0x8000 /* Next page bit. */
2649	\| 0x4000 /* Link partner acked us. */
2650	\| 0x05e0 /* Can do flow control, 100mbps FD/HD and 10mbps FD/HD. */
2651	\| 0x0001; /* Use CSMA selector. */
2652	else
2653	{
2654	val = 0;
2655	pData->cLinkDownReported++;
2656	}
2657	break;
2658
2659	case 6:
2660	/* Auto negotiation expansion register. */
2661	if (pData->fLinkUp && !pData->fLinkTempDown)
2662	val = 0x0008 /* Link partner supports npage. */
2663	\| 0x0004 /* Enable npage words. */
2664	\| 0x0001; /* Can do N-way auto-negotiation. */
2665	else
2666	{
2667	val = 0;
2668	pData->cLinkDownReported++;
2669	}
2670	break;
2671
2672	default:
2673	val = 0;
2674	break;
2675	}
2676
2677	#ifdef PCNET_DEBUG_MII
2678	Log(("#%d pcnet: mii read %d -> %#x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2679	miiaddr, val));
2680	#endif
2681	return val;
2682	}
2683
2684	static uint32_t pcnetBCRReadU16(PCNetState *pData, uint32_t u32RAP)
2685	{
2686	uint32_t val;
2687	u32RAP &= 0x7f;
2688	switch (u32RAP)
2689	{
2690	case BCR_LNKST:
2691	case BCR_LED1:
2692	case BCR_LED2:
2693	case BCR_LED3:
2694	val = pData->aBCR[u32RAP] & ~0x8000;
2695	/* Clear LNKSTE if we're not connected or if we've just loaded a VM state. */
2696	if (!pData->pDrv \|\| pData->fLinkTempDown \|\| !pData->fLinkUp)
2697	{
2698	if (u32RAP == 4)
2699	pData->cLinkDownReported++;
2700	val &= ~0x40;
2701	}
2702	val \|= (val & 0x017f & pData->u32Lnkst) ? 0x8000 : 0;
2703	break;
2704
2705	case BCR_MIIMDR:
2706	if (pData->fAm79C973 && (pData->aBCR[BCR_MIIADDR] >> 5 & 0x1f) == 0)
2707	{
2708	size_t miiaddr = pData->aBCR[BCR_MIIADDR] & 0x1f;
2709	val = pcnetMIIReadU16(pData, miiaddr);
2710	}
2711	else
2712	val = 0xffff;
2713	break;
2714
2715	default:
2716	val = u32RAP < BCR_MAX_RAP ? pData->aBCR[u32RAP] : 0;
2717	break;
2718	}
2719	#ifdef PCNET_DEBUG_BCR
2720	Log2(("#%d pcnetBCRReadU16: u32RAP=%d val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2721	u32RAP, val));
2722	#endif
2723	return val;
2724	}
2725
2726	#ifdef IN_RING3 /* move down */
2727	static void pcnetHardReset(PCNetState *pData)
2728	{
2729	int i;
2730	uint16_t checksum;
2731
2732	/* Initialize the PROM */
2733	Assert(sizeof(pData->MacConfigured) == 6);
2734	memcpy(pData->aPROM, &pData->MacConfigured, sizeof(pData->MacConfigured));
2735	pData->aPROM[12] = pData->aPROM[13] = 0x00;
2736	pData->aPROM[14] = pData->aPROM[15] = 0x57;
2737
2738	for (i = 0, checksum = 0; i < 16; i++)
2739	checksum += pData->aPROM[i];
2740	(uint16_t )&pData->aPROM[12] = cpu_to_le16(checksum);
2741
2742	pData->aBCR[BCR_MSRDA] = 0x0005;
2743	pData->aBCR[BCR_MSWRA] = 0x0005;
2744	pData->aBCR[BCR_MC ] = 0x0002;
2745	pData->aBCR[BCR_LNKST] = 0x00c0;
2746	pData->aBCR[BCR_LED1 ] = 0x0084;
2747	pData->aBCR[BCR_LED2 ] = 0x0088;
2748	pData->aBCR[BCR_LED3 ] = 0x0090;
2749	pData->aBCR[BCR_FDC ] = 0x0000;
2750	pData->aBCR[BCR_BSBC ] = 0x9001;
2751	pData->aBCR[BCR_EECAS] = 0x0002;
2752	pData->aCSR[58 ] = /* CSR58 is an alias for BCR20 */
2753	pData->aBCR[BCR_SWS ] = 0x0200;
2754	pData->iLog2DescSize = 3;
2755	pData->aBCR[BCR_PLAT ] = 0xff06;
2756
2757	pcnetSoftReset(pData);
2758	}
2759	#endif /* IN_RING3 */
2760
2761	static void pcnetAPROMWriteU8(PCNetState *pData, uint32_t addr, uint32_t val)
2762	{
2763	addr &= 0x0f;
2764	val &= 0xff;
2765	Log(("#%d pcnetAPROMWriteU8: addr=0x%08x val=0x%02x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2766	addr, val));
2767	/* Check APROMWE bit to enable write access */
2768	if (pcnetBCRReadU16(pData, 2) & 0x80)
2769	pData->aPROM[addr] = val;
2770	}
2771
2772	static uint32_t pcnetAPROMReadU8(PCNetState *pData, uint32_t addr)
2773	{
2774	uint32_t val = pData->aPROM[addr &= 0x0f];
2775	Log(("#%d pcnetAPROMReadU8: addr=0x%08x val=0x%02x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2776	addr, val));
2777	return val;
2778	}
2779
2780	static int pcnetIoportWriteU16(PCNetState *pData, uint32_t addr, uint32_t val)
2781	{
2782	int rc = VINF_SUCCESS;
2783
2784	#ifdef PCNET_DEBUG_IO
2785	Log2(("#%d pcnetIoportWriteU16: addr=0x%08x val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2786	addr, val));
2787	#endif
2788	if (RT_LIKELY(!BCR_DWIO(pData)))
2789	{
2790	switch (addr & 0x0f)
2791	{
2792	case 0x00: /* RDP */
2793	pcnetPollTimer(pData);
2794	rc = pcnetCSRWriteU16(pData, pData->u32RAP, val);
2795	pcnetUpdateIrq(pData);
2796	break;
2797	case 0x02: /* RAP */
2798	pData->u32RAP = val & 0x7f;
2799	break;
2800	case 0x06: /* BDP */
2801	rc = pcnetBCRWriteU16(pData, pData->u32RAP, val);
2802	break;
2803	}
2804	}
2805
2806	return rc;
2807	}
2808
2809	static uint32_t pcnetIoportReadU16(PCNetState pData, uint32_t addr, int pRC)
2810	{
2811	uint32_t val = ~0U;
2812
2813	*pRC = VINF_SUCCESS;
2814
2815	if (RT_LIKELY(!BCR_DWIO(pData)))
2816	{
2817	switch (addr & 0x0f)
2818	{
2819	case 0x00: /* RDP */
2820	/** @note if we're not polling, then the guest will tell us when to poll by setting TDMD in CSR0 */
2821	/** Polling is then useless here and possibly expensive. */
2822	if (!CSR_DPOLL(pData))
2823	pcnetPollTimer(pData);
2824
2825	val = pcnetCSRReadU16(pData, pData->u32RAP);
2826	if (pData->u32RAP == 0) // pcnetUpdateIrq() already called by pcnetCSRReadU16()
2827	goto skip_update_irq;
2828	break;
2829	case 0x02: /* RAP */
2830	val = pData->u32RAP;
2831	goto skip_update_irq;
2832	case 0x04: /* RESET */
2833	pcnetSoftReset(pData);
2834	val = 0;
2835	break;
2836	case 0x06: /* BDP */
2837	val = pcnetBCRReadU16(pData, pData->u32RAP);
2838	break;
2839	}
2840	}
2841	pcnetUpdateIrq(pData);
2842
2843	skip_update_irq:
2844	#ifdef PCNET_DEBUG_IO
2845	Log2(("#%d pcnetIoportReadU16: addr=0x%08x val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2846	addr, val & 0xffff));
2847	#endif
2848	return val;
2849	}
2850
2851	static int pcnetIoportWriteU32(PCNetState *pData, uint32_t addr, uint32_t val)
2852	{
2853	int rc = VINF_SUCCESS;
2854
2855	#ifdef PCNET_DEBUG_IO
2856	Log2(("#%d pcnetIoportWriteU32: addr=0x%08x val=0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2857	addr, val));
2858	#endif
2859	if (RT_LIKELY(BCR_DWIO(pData)))
2860	{
2861	switch (addr & 0x0f)
2862	{
2863	case 0x00: /* RDP */
2864	pcnetPollTimer(pData);
2865	rc = pcnetCSRWriteU16(pData, pData->u32RAP, val & 0xffff);
2866	pcnetUpdateIrq(pData);
2867	break;
2868	case 0x04: /* RAP */
2869	pData->u32RAP = val & 0x7f;
2870	break;
2871	case 0x0c: /* BDP */
2872	rc = pcnetBCRWriteU16(pData, pData->u32RAP, val & 0xffff);
2873	break;
2874	}
2875	}
2876	else if (addr == 0)
2877	{
2878	/* switch device to dword I/O mode */
2879	pcnetBCRWriteU16(pData, BCR_BSBC, pcnetBCRReadU16(pData, BCR_BSBC) \| 0x0080);
2880	#ifdef PCNET_DEBUG_IO
2881	Log2(("device switched into dword i/o mode\n"));
2882	#endif
2883	}
2884
2885	return rc;
2886	}
2887
2888	static uint32_t pcnetIoportReadU32(PCNetState pData, uint32_t addr, int pRC)
2889	{
2890	uint32_t val = ~0U;
2891
2892	*pRC = VINF_SUCCESS;
2893
2894	if (RT_LIKELY(BCR_DWIO(pData)))
2895	{
2896	switch (addr & 0x0f)
2897	{
2898	case 0x00: /* RDP */
2899	/** @note if we're not polling, then the guest will tell us when to poll by setting TDMD in CSR0 */
2900	/** Polling is then useless here and possibly expensive. */
2901	if (!CSR_DPOLL(pData))
2902	pcnetPollTimer(pData);
2903
2904	val = pcnetCSRReadU16(pData, pData->u32RAP);
2905	if (pData->u32RAP == 0) // pcnetUpdateIrq() already called by pcnetCSRReadU16()
2906	goto skip_update_irq;
2907	break;
2908	case 0x04: /* RAP */
2909	val = pData->u32RAP;
2910	goto skip_update_irq;
2911	case 0x08: /* RESET */
2912	pcnetSoftReset(pData);
2913	val = 0;
2914	break;
2915	case 0x0c: /* BDP */
2916	val = pcnetBCRReadU16(pData, pData->u32RAP);
2917	break;
2918	}
2919	}
2920	pcnetUpdateIrq(pData);
2921
2922	skip_update_irq:
2923	#ifdef PCNET_DEBUG_IO
2924	Log2(("#%d pcnetIoportReadU32: addr=0x%08x val=0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2925	addr, val));
2926	#endif
2927	return val;
2928	}
2929
2930	static void pcnetMMIOWriteU8(PCNetState *pData, RTGCPHYS addr, uint32_t val)
2931	{
2932	#ifdef PCNET_DEBUG_IO
2933	Log2(("#%d pcnetMMIOWriteU8: addr=0x%08x val=0x%02x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2934	addr, val));
2935	#endif
2936	if (!(addr & 0x10))
2937	pcnetAPROMWriteU8(pData, addr, val);
2938	}
2939
2940	static uint32_t pcnetMMIOReadU8(PCNetState *pData, RTGCPHYS addr)
2941	{
2942	uint32_t val = ~0U;
2943	if (!(addr & 0x10))
2944	val = pcnetAPROMReadU8(pData, addr);
2945	#ifdef PCNET_DEBUG_IO
2946	Log2(("#%d pcnetMMIOReadU8: addr=0x%08x val=0x%02x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2947	addr, val & 0xff));
2948	#endif
2949	return val;
2950	}
2951
2952	static void pcnetMMIOWriteU16(PCNetState *pData, RTGCPHYS addr, uint32_t val)
2953	{
2954	#ifdef PCNET_DEBUG_IO
2955	Log2(("#%d pcnetMMIOWriteU16: addr=0x%08x val=0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2956	addr, val));
2957	#endif
2958	if (addr & 0x10)
2959	pcnetIoportWriteU16(pData, addr & 0x0f, val);
2960	else
2961	{
2962	pcnetAPROMWriteU8(pData, addr, val );
2963	pcnetAPROMWriteU8(pData, addr+1, val >> 8);
2964	}
2965	}
2966
2967	static uint32_t pcnetMMIOReadU16(PCNetState *pData, RTGCPHYS addr)
2968	{
2969	uint32_t val = ~0U;
2970	int rc;
2971
2972	if (addr & 0x10)
2973	val = pcnetIoportReadU16(pData, addr & 0x0f, &rc);
2974	else
2975	{
2976	val = pcnetAPROMReadU8(pData, addr+1);
2977	val <<= 8;
2978	val \|= pcnetAPROMReadU8(pData, addr);
2979	}
2980	#ifdef PCNET_DEBUG_IO
2981	Log2(("#%d pcnetMMIOReadU16: addr=0x%08x val = 0x%04x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2982	addr, val & 0xffff));
2983	#endif
2984	return val;
2985	}
2986
2987	static void pcnetMMIOWriteU32(PCNetState *pData, RTGCPHYS addr, uint32_t val)
2988	{
2989	#ifdef PCNET_DEBUG_IO
2990	Log2(("#%d pcnetMMIOWriteU32: addr=0x%08x val=0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
2991	addr, val));
2992	#endif
2993	if (addr & 0x10)
2994	pcnetIoportWriteU32(pData, addr & 0x0f, val);
2995	else
2996	{
2997	pcnetAPROMWriteU8(pData, addr, val );
2998	pcnetAPROMWriteU8(pData, addr+1, val >> 8);
2999	pcnetAPROMWriteU8(pData, addr+2, val >> 16);
3000	pcnetAPROMWriteU8(pData, addr+3, val >> 24);
3001	}
3002	}
3003
3004	static uint32_t pcnetMMIOReadU32(PCNetState *pData, RTGCPHYS addr)
3005	{
3006	uint32_t val;
3007	int rc;
3008
3009	if (addr & 0x10)
3010	val = pcnetIoportReadU32(pData, addr & 0x0f, &rc);
3011	else
3012	{
3013	val = pcnetAPROMReadU8(pData, addr+3);
3014	val <<= 8;
3015	val \|= pcnetAPROMReadU8(pData, addr+2);
3016	val <<= 8;
3017	val \|= pcnetAPROMReadU8(pData, addr+1);
3018	val <<= 8;
3019	val \|= pcnetAPROMReadU8(pData, addr );
3020	}
3021	#ifdef PCNET_DEBUG_IO
3022	Log2(("#%d pcnetMMIOReadU32: addr=0x%08x val=0x%08x\n", PCNETSTATE_2_DEVINS(pData)->iInstance,
3023	addr, val));
3024	#endif
3025	return val;
3026	}
3027
3028
3029	/**
3030	* Port I/O Handler for IN operations.
3031	*
3032	* @returns VBox status code.
3033	*
3034	* @param pDevIns The device instance.
3035	* @param pvUser User argument.
3036	* @param Port Port number used for the IN operation.
3037	* @param pu32 Where to store the result.
3038	* @param cb Number of bytes read.
3039	*/
3040	PDMBOTHCBDECL(int) pcnetIOPortAPromRead(PPDMDEVINS pDevIns, void *pvUser,
3041	RTIOPORT Port, uint32_t *pu32, unsigned cb)
3042	{
3043	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3044	int rc;
3045	if (cb == 1)
3046	{
3047	STAM_PROFILE_ADV_START(&pData->StatAPROMRead, a);
3048	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_IOPORT_WRITE);
3049	if (rc == VINF_SUCCESS)
3050	{
3051	*pu32 = pcnetAPROMReadU8(pData, Port);
3052	PDMCritSectLeave(&pData->CritSect);
3053	}
3054	STAM_PROFILE_ADV_STOP(&pData->StatAPROMRead, a);
3055	}
3056	else
3057	rc = VERR_IOM_IOPORT_UNUSED;
3058	LogFlow(("#%d pcnetIOPortAPromRead: Port=%RTiop *pu32=%#RX32 cb=%d rc=%Vrc\n",
3059	PCNETSTATE_2_DEVINS(pData)->iInstance, Port, *pu32, cb, rc));
3060	return rc;
3061	}
3062
3063
3064	/**
3065	* Port I/O Handler for OUT operations.
3066	*
3067	* @returns VBox status code.
3068	*
3069	* @param pDevIns The device instance.
3070	* @param pvUser User argument.
3071	* @param Port Port number used for the IN operation.
3072	* @param u32 The value to output.
3073	* @param cb The value size in bytes.
3074	*/
3075	PDMBOTHCBDECL(int) pcnetIOPortAPromWrite(PPDMDEVINS pDevIns, void *pvUser,
3076	RTIOPORT Port, uint32_t u32, unsigned cb)
3077	{
3078	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3079	int rc;
3080
3081	if (cb == 1)
3082	{
3083	STAM_PROFILE_ADV_START(&pData->StatAPROMWrite, a);
3084	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_IOPORT_WRITE);
3085	if (rc == VINF_SUCCESS)
3086	{
3087	pcnetAPROMWriteU8(pData, Port, u32);
3088	PDMCritSectLeave(&pData->CritSect);
3089	}
3090	STAM_PROFILE_ADV_STOP(&pData->StatAPROMWrite, a);
3091	}
3092	else
3093	{
3094	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
3095	rc = VINF_SUCCESS;
3096	}
3097	LogFlow(("#%d pcnetIOPortAPromWrite: Port=%RTiop u32=%#RX32 cb=%d rc=%Vrc\n",
3098	PCNETSTATE_2_DEVINS(pData)->iInstance, Port, u32, cb, rc));
3099	return rc;
3100	}
3101
3102
3103	/**
3104	* Port I/O Handler for IN operations.
3105	*
3106	* @returns VBox status code.
3107	*
3108	* @param pDevIns The device instance.
3109	* @param pvUser User argument.
3110	* @param Port Port number used for the IN operation.
3111	* @param pu32 Where to store the result.
3112	* @param cb Number of bytes read.
3113	*/
3114	PDMBOTHCBDECL(int) pcnetIOPortRead(PPDMDEVINS pDevIns, void *pvUser,
3115	RTIOPORT Port, uint32_t *pu32, unsigned cb)
3116	{
3117	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3118	int rc = VINF_SUCCESS;
3119
3120	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatIORead), a);
3121	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_IOPORT_READ);
3122	if (rc == VINF_SUCCESS)
3123	{
3124	switch (cb)
3125	{
3126	case 2: *pu32 = pcnetIoportReadU16(pData, Port, &rc); break;
3127	case 4: *pu32 = pcnetIoportReadU32(pData, Port, &rc); break;
3128	default:
3129	rc = VERR_IOM_IOPORT_UNUSED;
3130	break;
3131	}
3132	PDMCritSectLeave(&pData->CritSect);
3133	}
3134	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatIORead), a);
3135	LogFlow(("#%d pcnetIOPortRead: Port=%RTiop *pu32=%#RX32 cb=%d rc=%Vrc\n",
3136	PCNETSTATE_2_DEVINS(pData)->iInstance, Port, *pu32, cb, rc));
3137	return rc;
3138	}
3139
3140
3141	/**
3142	* Port I/O Handler for OUT operations.
3143	*
3144	* @returns VBox status code.
3145	*
3146	* @param pDevIns The device instance.
3147	* @param pvUser User argument.
3148	* @param Port Port number used for the IN operation.
3149	* @param u32 The value to output.
3150	* @param cb The value size in bytes.
3151	*/
3152	PDMBOTHCBDECL(int) pcnetIOPortWrite(PPDMDEVINS pDevIns, void *pvUser,
3153	RTIOPORT Port, uint32_t u32, unsigned cb)
3154	{
3155	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3156	int rc = VINF_SUCCESS;
3157
3158	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatIOWrite), a);
3159	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_IOPORT_WRITE);
3160	if (rc == VINF_SUCCESS)
3161	{
3162	switch (cb)
3163	{
3164	case 2: rc = pcnetIoportWriteU16(pData, Port, u32); break;
3165	case 4: rc = pcnetIoportWriteU32(pData, Port, u32); break;
3166	default:
3167	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
3168	rc = VERR_INTERNAL_ERROR;
3169	break;
3170	}
3171	PDMCritSectLeave(&pData->CritSect);
3172	}
3173	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatIOWrite), a);
3174	LogFlow(("#%d pcnetIOPortWrite: Port=%RTiop u32=%#RX32 cb=%d rc=%Vrc\n",
3175	PCNETSTATE_2_DEVINS(pData)->iInstance, Port, u32, cb, rc));
3176	return rc;
3177	}
3178
3179
3180	/**
3181	* Memory mapped I/O Handler for read operations.
3182	*
3183	* @returns VBox status code.
3184	*
3185	* @param pDevIns The device instance.
3186	* @param pvUser User argument.
3187	* @param GCPhysAddr Physical address (in GC) where the read starts.
3188	* @param pv Where to store the result.
3189	* @param cb Number of bytes read.
3190	*/
3191	PDMBOTHCBDECL(int) pcnetMMIORead(PPDMDEVINS pDevIns, void *pvUser,
3192	RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
3193	{
3194	PCNetState pData = (PCNetState )pvUser;
3195	int rc = VINF_SUCCESS;
3196
3197	/*
3198	* We have to check the range, because we're page aligning the MMIO stuff presently.
3199	*/
3200	if (GCPhysAddr - pData->MMIOBase < PCNET_PNPMMIO_SIZE)
3201	{
3202	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatMMIORead), a);
3203	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_MMIO_READ);
3204	if (rc == VINF_SUCCESS)
3205	{
3206	switch (cb)
3207	{
3208	case 1: (uint8_t )pv = pcnetMMIOReadU8 (pData, GCPhysAddr); break;
3209	case 2: (uint16_t )pv = pcnetMMIOReadU16(pData, GCPhysAddr); break;
3210	case 4: (uint32_t )pv = pcnetMMIOReadU32(pData, GCPhysAddr); break;
3211	default:
3212	AssertMsgFailed(("cb=%d\n", cb));
3213	rc = VERR_INTERNAL_ERROR;
3214	break;
3215	}
3216	PDMCritSectLeave(&pData->CritSect);
3217	}
3218	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatMMIORead), a);
3219	}
3220	else
3221	memset(pv, 0, cb);
3222
3223	LogFlow(("#%d pcnetMMIORead: pvUser=%p:{%.*Rhxs} cb=%d GCPhysAddr=%RGp rc=%Vrc\n",
3224	PCNETSTATE_2_DEVINS(pData)->iInstance, pv, cb, pv, cb, GCPhysAddr, rc));
3225	return rc;
3226	}
3227
3228
3229	/**
3230	* Port I/O Handler for write operations.
3231	*
3232	* @returns VBox status code.
3233	*
3234	* @param pDevIns The device instance.
3235	* @param pvUser User argument.
3236	* @param GCPhysAddr Physical address (in GC) where the read starts.
3237	* @param pv Where to fetch the result.
3238	* @param cb Number of bytes to write.
3239	*/
3240	PDMBOTHCBDECL(int) pcnetMMIOWrite(PPDMDEVINS pDevIns, void *pvUser,
3241	RTGCPHYS GCPhysAddr, void *pv, unsigned cb)
3242	{
3243	PCNetState pData = (PCNetState )pvUser;
3244	int rc = VINF_SUCCESS;
3245
3246	/*
3247	* We have to check the range, because we're page aligning the MMIO stuff presently.
3248	*/
3249	if (GCPhysAddr - pData->MMIOBase < PCNET_PNPMMIO_SIZE)
3250	{
3251	STAM_PROFILE_ADV_START(&pData->CTXSUFF(StatMMIOWrite), a);
3252	rc = PDMCritSectEnter(&pData->CritSect, VINF_IOM_HC_MMIO_WRITE);
3253	if (rc == VINF_SUCCESS)
3254	{
3255	switch (cb)
3256	{
3257	case 1: pcnetMMIOWriteU8 (pData, GCPhysAddr, (uint8_t )pv); break;
3258	case 2: pcnetMMIOWriteU16(pData, GCPhysAddr, (uint16_t )pv); break;
3259	case 4: pcnetMMIOWriteU32(pData, GCPhysAddr, (uint32_t )pv); break;
3260	default:
3261	AssertMsgFailed(("cb=%d\n", cb));
3262	rc = VERR_INTERNAL_ERROR;
3263	break;
3264	}
3265	PDMCritSectLeave(&pData->CritSect);
3266	}
3267	// else rc == VINF_IOM_HC_MMIO_WRITE => handle in ring3
3268
3269	STAM_PROFILE_ADV_STOP(&pData->CTXSUFF(StatMMIOWrite), a);
3270	}
3271	LogFlow(("#%d pcnetMMIOWrite: pvUser=%p:{%.*Rhxs} cb=%d GCPhysAddr=%RGp rc=%Vrc\n",
3272	PCNETSTATE_2_DEVINS(pData)->iInstance, pv, cb, pv, cb, GCPhysAddr, rc));
3273	return rc;
3274	}
3275
3276
3277	#ifdef IN_RING3
3278	/**
3279	* Device timer callback function.
3280	*
3281	* @param pDevIns Device instance of the device which registered the timer.
3282	* @param pTimer The timer handle.
3283	* @thread EMT
3284	*/
3285	static DECLCALLBACK(void) pcnetTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer)
3286	{
3287	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3288	int rc;
3289
3290	STAM_PROFILE_ADV_START(&pData->StatTimer, a);
3291	rc = PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
3292	AssertReleaseRC(rc);
3293
3294	pcnetPollTimer(pData);
3295
3296	PDMCritSectLeave(&pData->CritSect);
3297	STAM_PROFILE_ADV_STOP(&pData->StatTimer, a);
3298	}
3299
3300
3301	/**
3302	* Restore timer callback.
3303	*
3304	* This is only called when've restored a saved state and temporarily
3305	* disconnected the network link to inform the guest that network connections
3306	* should be considered lost.
3307	*
3308	* @param pDevIns Device instance of the device which registered the timer.
3309	* @param pTimer The timer handle.
3310	*/
3311	static DECLCALLBACK(void) pcnetTimerRestore(PPDMDEVINS pDevIns, PTMTIMER pTimer)
3312	{
3313	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3314	int rc = PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
3315	AssertReleaseRC(rc);
3316
3317	rc = VERR_GENERAL_FAILURE;
3318	if (pData->cLinkDownReported <= PCNET_MAX_LINKDOWN_REPORTED)
3319	rc = TMTimerSetMillies(pData->pTimerRestore, 1500);
3320	if (VBOX_FAILURE(rc))
3321	{
3322	pData->fLinkTempDown = false;
3323	if (pData->fLinkUp)
3324	{
3325	LogRel(("PCNet#%d: The link is back up again after the restore.\n",
3326	pDevIns->iInstance));
3327	Log(("#%d pcnetTimerRestore: Clearing ERR and CERR after load. cLinkDownReported=%d\n",
3328	pDevIns->iInstance, pData->cLinkDownReported));
3329	pData->aCSR[0] &= ~(BIT(15) \| BIT(13)); /* ERR \| CERR - probably not 100% correct either... */
3330	pData->Led.Actual.s.fError = 0;
3331	}
3332	}
3333	else
3334	Log(("#%d pcnetTimerRestore: cLinkDownReported=%d, wait another 1500ms...\n",
3335	pDevIns->iInstance, pData->cLinkDownReported));
3336
3337	PDMCritSectLeave(&pData->CritSect);
3338	}
3339
3340
3341	/**
3342	* Callback function for mapping an PCI I/O region.
3343	*
3344	* @return VBox status code.
3345	* @param pPciDev Pointer to PCI device. Use pPciDev->pDevIns to get the device instance.
3346	* @param iRegion The region number.
3347	* @param GCPhysAddress Physical address of the region. If iType is PCI_ADDRESS_SPACE_IO, this is an
3348	* I/O port, else it's a physical address.
3349	* This address is NOT relative to pci_mem_base like earlier!
3350	* @param cb Region size.
3351	* @param enmType One of the PCI_ADDRESS_SPACE_* values.
3352	*/
3353	static DECLCALLBACK(int) pcnetIOPortMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
3354	RTGCPHYS GCPhysAddress, uint32_t cb, PCIADDRESSSPACE enmType)
3355	{
3356	int rc;
3357	PPDMDEVINS pDevIns = pPciDev->pDevIns;
3358	RTIOPORT Port = (RTIOPORT)GCPhysAddress;
3359	PCNetState *pData = PCIDEV_2_PCNETSTATE(pPciDev);
3360
3361	Assert(enmType == PCI_ADDRESS_SPACE_IO);
3362	Assert(cb >= 0x20);
3363
3364	rc = PDMDevHlpIOPortRegister(pDevIns, Port, 0x10, 0, pcnetIOPortAPromWrite,
3365	pcnetIOPortAPromRead, NULL, NULL, "PCNet ARPOM");
3366	if (VBOX_FAILURE(rc))
3367	return rc;
3368	rc = PDMDevHlpIOPortRegister(pDevIns, Port + 0x10, 0x10, 0, pcnetIOPortWrite,
3369	pcnetIOPortRead, NULL, NULL, "PCNet");
3370	if (VBOX_FAILURE(rc))
3371	return rc;
3372
3373	if (pData->fGCEnabled)
3374	{
3375	rc = PDMDevHlpIOPortRegisterGC(pDevIns, Port, 0x10, 0, "pcnetIOPortAPromWrite",
3376	"pcnetIOPortAPromRead", NULL, NULL, "PCNet aprom");
3377	if (VBOX_FAILURE(rc))
3378	return rc;
3379	rc = PDMDevHlpIOPortRegisterGC(pDevIns, Port + 0x10, 0x10, 0, "pcnetIOPortWrite",
3380	"pcnetIOPortRead", NULL, NULL, "PCNet");
3381	if (VBOX_FAILURE(rc))
3382	return rc;
3383	}
3384	if (pData->fR0Enabled)
3385	{
3386	rc = PDMDevHlpIOPortRegisterR0(pDevIns, Port, 0x10, 0, "pcnetIOPortAPromWrite",
3387	"pcnetIOPortAPromRead", NULL, NULL, "PCNet aprom");
3388	if (VBOX_FAILURE(rc))
3389	return rc;
3390	rc = PDMDevHlpIOPortRegisterR0(pDevIns, Port + 0x10, 0x10, 0, "pcnetIOPortWrite",
3391	"pcnetIOPortRead", NULL, NULL, "PCNet");
3392	if (VBOX_FAILURE(rc))
3393	return rc;
3394	}
3395
3396	pData->IOPortBase = Port;
3397	return VINF_SUCCESS;
3398	}
3399
3400
3401	/**
3402	* Callback function for mapping the MMIO region.
3403	*
3404	* @return VBox status code.
3405	* @param pPciDev Pointer to PCI device. Use pPciDev->pDevIns to get the device instance.
3406	* @param iRegion The region number.
3407	* @param GCPhysAddress Physical address of the region. If iType is PCI_ADDRESS_SPACE_IO, this is an
3408	* I/O port, else it's a physical address.
3409	* This address is NOT relative to pci_mem_base like earlier!
3410	* @param cb Region size.
3411	* @param enmType One of the PCI_ADDRESS_SPACE_* values.
3412	*/
3413	static DECLCALLBACK(int) pcnetMMIOMap(PPCIDEVICE pPciDev, /unsigned/ int iRegion,
3414	RTGCPHYS GCPhysAddress, uint32_t cb, PCIADDRESSSPACE enmType)
3415	{
3416	PCNetState *pData = PCIDEV_2_PCNETSTATE(pPciDev);
3417	int rc;
3418
3419	Assert(enmType == PCI_ADDRESS_SPACE_MEM);
3420	Assert(cb >= PCNET_PNPMMIO_SIZE);
3421
3422	/* We use the assigned size here, because we currently only support page aligned MMIO ranges. */
3423	rc = PDMDevHlpMMIORegister(pPciDev->pDevIns, GCPhysAddress, cb, pData,
3424	pcnetMMIOWrite, pcnetMMIORead, NULL, "PCNet");
3425	if (VBOX_FAILURE(rc))
3426	return rc;
3427	pData->MMIOBase = GCPhysAddress;
3428	return rc;
3429	}
3430
3431
3432	/**
3433	* PCNET status info callback.
3434	*
3435	* @param pDevIns The device instance.
3436	* @param pHlp The output helpers.
3437	* @param pszArgs The arguments.
3438	*/
3439	static DECLCALLBACK(void) pcnetInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
3440	{
3441	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3442	bool fRcvRing = false;
3443	bool fXmtRing = false;
3444
3445	/*
3446	* Parse args.
3447	*/
3448	if (pszArgs)
3449	{
3450	fRcvRing = strstr(pszArgs, "verbose") \|\| strstr(pszArgs, "rcv");
3451	fXmtRing = strstr(pszArgs, "verbose") \|\| strstr(pszArgs, "xmt");
3452	}
3453
3454	/*
3455	* Show info.
3456	*/
3457	pHlp->pfnPrintf(pHlp,
3458	"pcnet #%d: port=%RTiop mmio=%RGp mac-cfg=%.*Rhxs %s\n",
3459	pDevIns->iInstance,
3460	pData->IOPortBase, pData->MMIOBase, sizeof(pData->MacConfigured), &pData->MacConfigured,
3461	pData->fAm79C973 ? "Am79C973" : "Am79C970A", pData->fGCEnabled ? " GC" : "", pData->fR0Enabled ? " R0" : "");
3462
3463	PDMCritSectEnter(&pData->CritSect, VERR_INTERNAL_ERROR); /* Take it here so we know why we're hanging... */
3464
3465	pHlp->pfnPrintf(pHlp,
3466	"CSR0=%04RX32:\n",
3467	pData->aCSR[0]);
3468
3469	pHlp->pfnPrintf(pHlp,
3470	"CSR1=%04RX32:\n",
3471	pData->aCSR[1]);
3472
3473	pHlp->pfnPrintf(pHlp,
3474	"CSR2=%04RX32:\n",
3475	pData->aCSR[2]);
3476
3477	pHlp->pfnPrintf(pHlp,
3478	"CSR3=%04RX32: BSWP=%d EMBA=%d DXMT2PD=%d LAPPEN=%d DXSUFLO=%d IDONM=%d TINTM=%d RINTM=%d MERRM=%d MISSM=%d BABLM=%d\n",
3479	pData->aCSR[3],
3480	!!(pData->aCSR[3] & BIT(2)), !!(pData->aCSR[3] & BIT(3)), !!(pData->aCSR[3] & BIT(4)), CSR_LAPPEN(pData),
3481	CSR_DXSUFLO(pData), !!(pData->aCSR[3] & BIT(8)), !!(pData->aCSR[3] & BIT(9)), !!(pData->aCSR[3] & BIT(10)),
3482	!!(pData->aCSR[3] & BIT(11)), !!(pData->aCSR[3] & BIT(12)), !!(pData->aCSR[3] & BIT(14)));
3483
3484	pHlp->pfnPrintf(pHlp,
3485	"CSR4=%04RX32: JABM=%d JAB=%d TXSTRM=%d TXSTRT=%d RCVCOOM=%d RCVCCO=%d UINT=%d UINTCMD=%d\n"
3486	" MFCOM=%d MFCO=%d ASTRP_RCV=%d APAD_XMT=%d DPOLL=%d TIMER=%d EMAPLUS=%d EN124=%d\n",
3487	pData->aCSR[4],
3488	!!(pData->aCSR[4] & BIT( 0)), !!(pData->aCSR[4] & BIT( 1)), !!(pData->aCSR[4] & BIT( 2)), !!(pData->aCSR[4] & BIT( 3)),
3489	!!(pData->aCSR[4] & BIT( 4)), !!(pData->aCSR[4] & BIT( 5)), !!(pData->aCSR[4] & BIT( 6)), !!(pData->aCSR[4] & BIT( 7)),
3490	!!(pData->aCSR[4] & BIT( 8)), !!(pData->aCSR[4] & BIT( 9)), !!(pData->aCSR[4] & BIT(10)), !!(pData->aCSR[4] & BIT(11)),
3491	!!(pData->aCSR[4] & BIT(12)), !!(pData->aCSR[4] & BIT(13)), !!(pData->aCSR[4] & BIT(14)), !!(pData->aCSR[4] & BIT(15)));
3492
3493	pHlp->pfnPrintf(pHlp,
3494	"CSR5=%04RX32:\n",
3495	pData->aCSR[5]);
3496
3497	pHlp->pfnPrintf(pHlp,
3498	"CSR6=%04RX32: RLEN=%03x* TLEN=%03x* [* encoded]\n",
3499	pData->aCSR[6],
3500	(pData->aCSR[6] >> 8) & 0xf, (pData->aCSR[6] >> 12) & 0xf);
3501
3502	pHlp->pfnPrintf(pHlp,
3503	"CSR8..11=%04RX32,%04RX32,%04RX32,%04RX32: LADRF=%016RX64\n",
3504	pData->aCSR[8], pData->aCSR[9], pData->aCSR[10], pData->aCSR[11],
3505	(uint64_t)(pData->aCSR[ 8] & 0xffff)
3506	\| (uint64_t)(pData->aCSR[ 9] & 0xffff) << 16
3507	\| (uint64_t)(pData->aCSR[10] & 0xffff) << 32
3508	\| (uint64_t)(pData->aCSR[11] & 0xffff) << 48);
3509
3510	pHlp->pfnPrintf(pHlp,
3511	"CSR12..14=%04RX32,%04RX32,%04RX32: PADR=%02x %02x %02x %02x %02x %02x (Current MAC Address)\n",
3512	pData->aCSR[12], pData->aCSR[13], pData->aCSR[14],
3513	pData->aCSR[12] & 0xff,
3514	(pData->aCSR[12] >> 8) & 0xff,
3515	pData->aCSR[13] & 0xff,
3516	(pData->aCSR[13] >> 8) & 0xff,
3517	pData->aCSR[14] & 0xff,
3518	(pData->aCSR[14] >> 8) & 0xff);
3519
3520	pHlp->pfnPrintf(pHlp,
3521	"CSR15=%04RX32: DXR=%d DTX=%d LOOP=%d DXMTFCS=%d FCOLL=%d DRTY=%d INTL=%d PORTSEL=%d LTR=%d\n"
3522	" MENDECL=%d DAPC=%d DLNKTST=%d DRCVPV=%d DRCVBC=%d PROM=%d\n",
3523	pData->aCSR[15],
3524	!!(pData->aCSR[15] & BIT( 0)), !!(pData->aCSR[15] & BIT( 1)), !!(pData->aCSR[15] & BIT( 2)), !!(pData->aCSR[15] & BIT( 3)),
3525	!!(pData->aCSR[15] & BIT( 4)), !!(pData->aCSR[15] & BIT( 5)), !!(pData->aCSR[15] & BIT( 6)), (pData->aCSR[15] >> 7) & 3,
3526	!!(pData->aCSR[15] & BIT( 9)), !!(pData->aCSR[15] & BIT(10)), !!(pData->aCSR[15] & BIT(11)),
3527	!!(pData->aCSR[15] & BIT(12)), !!(pData->aCSR[15] & BIT(13)), !!(pData->aCSR[15] & BIT(14)), !!(pData->aCSR[15] & BIT(15)));
3528
3529	pHlp->pfnPrintf(pHlp,
3530	"CSR46=%04RX32: POLL=%04x (Poll Time Counter)\n",
3531	pData->aCSR[46], pData->aCSR[46] & 0xffff);
3532
3533	pHlp->pfnPrintf(pHlp,
3534	"CSR47=%04RX32: POLLINT=%04x (Poll Time Interval)\n",
3535	pData->aCSR[47], pData->aCSR[47] & 0xffff);
3536
3537	pHlp->pfnPrintf(pHlp,
3538	"CSR58=%04RX32: SWSTYLE=%02x %s SSIZE32=%d CSRPCNET=%d APERRENT=%d\n",
3539	pData->aCSR[58],
3540	pData->aCSR[58] & 0x7f,
3541	(pData->aCSR[58] & 0x7f) == 0 ? "C-LANCE / PCnet-ISA"
3542	: (pData->aCSR[58] & 0x7f) == 1 ? "ILACC"
3543	: (pData->aCSR[58] & 0x7f) == 2 ? "PCNet-PCI II"
3544	: (pData->aCSR[58] & 0x7f) == 3 ? "PCNet-PCI II controller"
3545	: "!!reserved!!",
3546	!!(pData->aCSR[58] & BIT(8)), !!(pData->aCSR[58] & BIT(9)), !!(pData->aCSR[58] & BIT(10)));
3547
3548	pHlp->pfnPrintf(pHlp,
3549	"CSR112=%04RX32: MFC=%04x (Missed receive Frame Count)\n",
3550	pData->aCSR[112], pData->aCSR[112] & 0xffff);
3551
3552	pHlp->pfnPrintf(pHlp,
3553	"CSR122=%04RX32: RCVALGN=%04x (Receive Frame Align)\n",
3554	pData->aCSR[122], !!(pData->aCSR[122] & BIT(0)));
3555
3556	pHlp->pfnPrintf(pHlp,
3557	"CSR124=%04RX32: RPA=%04x (Runt Packet Accept)\n",
3558	pData->aCSR[122], !!(pData->aCSR[122] & BIT(3)));
3559
3560
3561	/*
3562	* Dump the receive ring.
3563	*/
3564	pHlp->pfnPrintf(pHlp,
3565	"RCVRL=%04x RCVRC=%04x GCRDRA=%RX32 \n"
3566	"CRDA=%08RX32 CRBA=%08RX32 CRBC=%03x CRST=%04x\n"
3567	"NRDA=%08RX32 NRBA=%08RX32 NRBC=%03x NRST=%04x\n"
3568	"NNRDA=%08RX32\n"
3569	,
3570	CSR_RCVRL(pData), CSR_RCVRC(pData), pData->GCRDRA,
3571	CSR_CRDA(pData), CSR_CRBA(pData), CSR_CRBC(pData), CSR_CRST(pData),
3572	CSR_NRDA(pData), CSR_NRBA(pData), CSR_NRBC(pData), CSR_NRST(pData),
3573	CSR_NNRD(pData));
3574	if (fRcvRing)
3575	{
3576	const unsigned cb = 1 << pData->iLog2DescSize;
3577	RTGCPHYS GCPhys = pData->GCRDRA;
3578	unsigned i = CSR_RCVRL(pData);
3579	while (i-- > 0)
3580	{
3581	RMD rmd;
3582	pcnetRmdLoad(pData, &rmd, PHYSADDR(pData, GCPhys));
3583	pHlp->pfnPrintf(pHlp,
3584	"%04x %RGp:%c%c RBADR=%08RX32 BCNT=%03x MCNT=%03x "
3585	"OWN=%d ERR=%d FRAM=%d OFLO=%d CRC=%d BUFF=%d STP=%d ENP=%d BPE=%d "
3586	"PAM=%d LAFM=%d BAM=%d RCC=%02x RPC=%02x ONES=%x ZEROS=%d\n",
3587	i, GCPhys, i + 1 == CSR_RCVRC(pData) ? '' : ' ', GCPhys == CSR_CRDA(pData) ? '' : ' ',
3588	rmd.rmd0.rbadr, 4096 - rmd.rmd1.bcnt, rmd.rmd2.mcnt,
3589	rmd.rmd1.own, rmd.rmd1.err, rmd.rmd1.fram, rmd.rmd1.oflo, rmd.rmd1.crc, rmd.rmd1.buff,
3590	rmd.rmd1.stp, rmd.rmd1.enp, rmd.rmd1.bpe,
3591	rmd.rmd1.pam, rmd.rmd1.lafm, rmd.rmd1.bam, rmd.rmd2.rcc, rmd.rmd2.rpc,
3592	rmd.rmd1.ones, rmd.rmd2.zeros);
3593
3594	GCPhys += cb;
3595	}
3596	}
3597
3598	/*
3599	* Dump the transmit ring.
3600	*/
3601	pHlp->pfnPrintf(pHlp,
3602	"XMTRL=%04x XMTRC=%04x GCTDRA=%08RX32 BADX=%08RX32\n"
3603	"PXDA=%08RX32 PXBC=%03x PXST=%04x\n"
3604	"CXDA=%08RX32 CXBA=%08RX32 CXBC=%03x CXST=%04x\n"
3605	"NXDA=%08RX32 NXBA=%08RX32 NXBC=%03x NXST=%04x\n"
3606	"NNXDA=%08RX32\n"
3607	,
3608	CSR_XMTRL(pData), CSR_XMTRC(pData),
3609	pData->GCTDRA, CSR_BADX(pData),
3610	CSR_PXDA(pData), CSR_PXBC(pData), CSR_PXST(pData),
3611	CSR_CXDA(pData), CSR_CXBA(pData), CSR_CXBC(pData), CSR_CXST(pData),
3612	CSR_NXDA(pData), CSR_NXBA(pData), CSR_NXBC(pData), CSR_NXST(pData),
3613	CSR_NNXD(pData));
3614	if (fXmtRing)
3615	{
3616	const unsigned cb = 1 << pData->iLog2DescSize;
3617	RTGCPHYS GCPhys = pData->GCTDRA;
3618	unsigned i = CSR_RCVRL(pData);
3619	while (i-- > 0)
3620	{
3621	TMD tmd;
3622	pcnetTmdLoad(pData, &tmd, PHYSADDR(pData, GCPhys));
3623	pHlp->pfnPrintf(pHlp,
3624	"%04x %RGp:%c%c TBADR=%08RX32 BCNT=%03x OWN=%d "
3625	"ERR=%d NOFCS=%d LTINT=%d ONE=%d DEF=%d STP=%d ENP=%d BPE=%d "
3626	"BUFF=%d UFLO=%d EXDEF=%d LCOL=%d LCAR=%d RTRY=%d TDR=%03x TRC=%x ONES=%x\n"
3627	,
3628	i, GCPhys, i + 1 == CSR_XMTRC(pData) ? '' : ' ', GCPhys == CSR_CXDA(pData) ? '' : ' ',
3629	tmd.tmd0.tbadr, 4096 - tmd.tmd1.bcnt,
3630	tmd.tmd2.tdr,
3631	tmd.tmd2.trc,
3632	tmd.tmd1.own,
3633	tmd.tmd1.err,
3634	tmd.tmd1.nofcs,
3635	tmd.tmd1.ltint,
3636	tmd.tmd1.one,
3637	tmd.tmd1.def,
3638	tmd.tmd1.stp,
3639	tmd.tmd1.enp,
3640	tmd.tmd1.bpe,
3641	tmd.tmd2.buff,
3642	tmd.tmd2.uflo,
3643	tmd.tmd2.exdef,
3644	tmd.tmd2.lcol,
3645	tmd.tmd2.lcar,
3646	tmd.tmd2.rtry,
3647	tmd.tmd2.tdr,
3648	tmd.tmd2.trc,
3649	tmd.tmd1.ones);
3650
3651	GCPhys += cb;
3652	}
3653	}
3654
3655	PDMCritSectLeave(&pData->CritSect);
3656	}
3657
3658
3659	/**
3660	* Prepares for state saving.
3661	* We must stop the RX process to prevent altering of the main memory after saving.
3662	*
3663	* @returns VBox status code.
3664	* @param pDevIns The device instance.
3665	* @param pSSMHandle The handle to save the state to.
3666	*/
3667	static DECLCALLBACK(int) pcnetSavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
3668	{
3669	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3670
3671	PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
3672
3673	pData->fSaving = true;
3674	/* From now on drop all received packets to prevent altering of main memory after
3675	* pgmR3Save() was called but before the RX thread is terminated */
3676
3677	PDMCritSectLeave(&pData->CritSect);
3678	return VINF_SUCCESS;
3679	}
3680
3681
3682	/**
3683	* Saves a state of the PC-Net II device.
3684	*
3685	* @returns VBox status code.
3686	* @param pDevIns The device instance.
3687	* @param pSSMHandle The handle to save the state to.
3688	*/
3689	static DECLCALLBACK(int) pcnetSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
3690	{
3691	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3692
3693	SSMR3PutBool(pSSMHandle, pData->fLinkUp);
3694	SSMR3PutU32(pSSMHandle, pData->u32RAP);
3695	SSMR3PutS32(pSSMHandle, pData->iISR);
3696	SSMR3PutU32(pSSMHandle, pData->u32Lnkst);
3697	SSMR3PutGCPhys(pSSMHandle, pData->GCRDRA);
3698	SSMR3PutGCPhys(pSSMHandle, pData->GCTDRA);
3699	SSMR3PutMem(pSSMHandle, pData->aPROM, sizeof(pData->aPROM));
3700	SSMR3PutMem(pSSMHandle, pData->aCSR, sizeof(pData->aCSR));
3701	SSMR3PutMem(pSSMHandle, pData->aBCR, sizeof(pData->aBCR));
3702	SSMR3PutMem(pSSMHandle, pData->aMII, sizeof(pData->aMII));
3703	SSMR3PutU16(pSSMHandle, pData->u16CSR0LastSeenByGuest);
3704	SSMR3PutU64(pSSMHandle, pData->u64LastPoll);
3705	SSMR3PutMem(pSSMHandle, &pData->MacConfigured, sizeof(pData->MacConfigured));
3706	SSMR3PutBool(pSSMHandle, pData->fAm79C973);
3707	#ifdef PCNET_NO_POLLING
3708	return VINF_SUCCESS;
3709	#else
3710	return TMR3TimerSave(pData->CTXSUFF(pTimerPoll), pSSMHandle);
3711	#endif
3712	}
3713
3714
3715	/**
3716	* Loads a saved PC-Net II device state.
3717	*
3718	* @returns VBox status code.
3719	* @param pDevIns The device instance.
3720	* @param pSSMHandle The handle to the saved state.
3721	* @param u32Version The data unit version number.
3722	*/
3723	static DECLCALLBACK(int) pcnetLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t u32Version)
3724	{
3725	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3726	PDMMAC Mac;
3727	if (u32Version != PCNET_SAVEDSTATE_VERSION)
3728	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
3729
3730	/* restore data */
3731	SSMR3GetBool(pSSMHandle, &pData->fLinkUp);
3732	SSMR3GetU32(pSSMHandle, &pData->u32RAP);
3733	SSMR3GetS32(pSSMHandle, &pData->iISR);
3734	SSMR3GetU32(pSSMHandle, &pData->u32Lnkst);
3735	SSMR3GetGCPhys(pSSMHandle, &pData->GCRDRA);
3736	SSMR3GetGCPhys(pSSMHandle, &pData->GCTDRA);
3737	SSMR3GetMem(pSSMHandle, &pData->aPROM, sizeof(pData->aPROM));
3738	SSMR3GetMem(pSSMHandle, &pData->aCSR, sizeof(pData->aCSR));
3739	SSMR3GetMem(pSSMHandle, &pData->aBCR, sizeof(pData->aBCR));
3740	SSMR3GetMem(pSSMHandle, &pData->aMII, sizeof(pData->aMII));
3741	SSMR3GetU16(pSSMHandle, &pData->u16CSR0LastSeenByGuest);
3742	SSMR3GetU64(pSSMHandle, &pData->u64LastPoll);
3743	SSMR3GetMem(pSSMHandle, &Mac, sizeof(Mac));
3744	Assert(!memcmp(&Mac, &pData->MacConfigured, sizeof(Mac)));
3745	SSMR3GetBool(pSSMHandle, &pData->fAm79C973);
3746	#ifndef PCNET_NO_POLLING
3747	TMR3TimerLoad(pData->CTXSUFF(pTimerPoll), pSSMHandle);
3748	#endif
3749
3750	pData->iLog2DescSize = BCR_SWSTYLE(pData)
3751	? 4
3752	: 3;
3753	pData->GCUpperPhys = BCR_SSIZE32(pData)
3754	? 0
3755	: (0xff00 & (uint32_t)pData->aCSR[2]) << 16;
3756
3757	/* update promiscuous mode. */
3758	if (pData->pDrv)
3759	pData->pDrv->pfnSetPromiscuousMode(pData->pDrv, CSR_PROM(pData));
3760
3761	#ifdef PCNET_NO_POLLING
3762	/* Enable physical monitoring again (!) */
3763	pcnetUpdateRingHandlers(pData);
3764	#endif
3765	/* Indicate link down to the guest OS that all network connections have been lost. */
3766	if (pData->fLinkUp)
3767	{
3768	pData->fLinkTempDown = true;
3769	pData->cLinkDownReported = 0;
3770	pData->aCSR[0] \|= BIT(15) \| BIT(13); /* ERR \| CERR (this is probably wrong) */
3771	pData->Led.Asserted.s.fError = pData->Led.Actual.s.fError = 1;
3772	return TMTimerSetMillies(pData->pTimerRestore, 5000);
3773	}
3774	return VINF_SUCCESS;
3775	}
3776
3777
3778	/**
3779	* Queries an interface to the driver.
3780	*
3781	* @returns Pointer to interface.
3782	* @returns NULL if the interface was not supported by the driver.
3783	* @param pInterface Pointer to this interface structure.
3784	* @param enmInterface The requested interface identification.
3785	* @thread Any thread.
3786	*/
3787	static DECLCALLBACK(void ) pcnetQueryInterface(struct PDMIBASE pInterface, PDMINTERFACE enmInterface)
3788	{
3789	PCNetState pData = (PCNetState )((uintptr_t)pInterface - RT_OFFSETOF(PCNetState, IBase));
3790	Assert(&pData->IBase == pInterface);
3791	switch (enmInterface)
3792	{
3793	case PDMINTERFACE_BASE:
3794	return &pData->IBase;
3795	case PDMINTERFACE_NETWORK_PORT:
3796	return &pData->INetworkPort;
3797	case PDMINTERFACE_NETWORK_CONFIG:
3798	return &pData->INetworkConfig;
3799	case PDMINTERFACE_LED_PORTS:
3800	return &pData->ILeds;
3801	default:
3802	return NULL;
3803	}
3804	}
3805
3806	/** Converts a pointer to PCNetState::INetworkPort to a PCNetState pointer. */
3807	#define INETWORKPORT_2_DATA(pInterface) ( (PCNetState *)((uintptr_t)pInterface - RT_OFFSETOF(PCNetState, INetworkPort)) )
3808
3809
3810	/**
3811	* Check if the device/driver can receive data now.
3812	* This must be called before the pfnRecieve() method is called.
3813	*
3814	* @returns Number of bytes the driver can receive.
3815	* @param pInterface Pointer to the interface structure containing the called function pointer.
3816	* @thread EMT
3817	*/
3818	static DECLCALLBACK(size_t) pcnetCanReceive(PPDMINETWORKPORT pInterface)
3819	{
3820	size_t cb;
3821	int rc;
3822	PCNetState *pData = INETWORKPORT_2_DATA(pInterface);
3823
3824	rc = PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
3825	AssertReleaseRC(rc);
3826
3827	cb = pcnetCanReceiveNoSync(pData);
3828
3829	PDMCritSectLeave(&pData->CritSect);
3830	return cb;
3831	}
3832
3833
3834	/**
3835	* Receive data from the network.
3836	*
3837	* @returns VBox status code.
3838	* @param pInterface Pointer to the interface structure containing the called function pointer.
3839	* @param pvBuf The available data.
3840	* @param cb Number of bytes available in the buffer.
3841	* @thread EMT
3842	*/
3843	static DECLCALLBACK(int) pcnetReceive(PPDMINETWORKPORT pInterface, const void *pvBuf, size_t cb)
3844	{
3845	PCNetState *pData = INETWORKPORT_2_DATA(pInterface);
3846	int rc;
3847
3848	STAM_PROFILE_ADV_START(&pData->StatReceive, a);
3849	rc = PDMCritSectEnter(&pData->CritSect, VERR_PERMISSION_DENIED);
3850	AssertReleaseRC(rc);
3851
3852	if (!pData->fSaving)
3853	{
3854	if (cb > 70) /* unqualified guess */
3855	pData->Led.Asserted.s.fReading = pData->Led.Actual.s.fReading = 1;
3856	pcnetReceiveNoSync(pData, (const uint8_t*)pvBuf, cb);
3857	pData->Led.Actual.s.fReading = 0;
3858	}
3859	/* otherwise junk the data to Nirwana. */
3860
3861	PDMCritSectLeave(&pData->CritSect);
3862	STAM_PROFILE_ADV_STOP(&pData->StatReceive, a);
3863
3864	return VINF_SUCCESS;
3865	}
3866
3867	/** Converts a pointer to PCNetState::INetworkConfig to a PCNetState pointer. */
3868	#define INETWORKCONFIG_2_DATA(pInterface) ( (PCNetState *)((uintptr_t)pInterface - RT_OFFSETOF(PCNetState, INetworkConfig)) )
3869
3870
3871	/**
3872	* Gets the current Media Access Control (MAC) address.
3873	*
3874	* @returns VBox status code.
3875	* @param pInterface Pointer to the interface structure containing the called function pointer.
3876	* @param pMac Where to store the MAC address.
3877	* @thread EMT
3878	*/
3879	static DECLCALLBACK(int) pcnetGetMac(PPDMINETWORKCONFIG pInterface, PPDMMAC *pMac)
3880	{
3881	PCNetState *pData = INETWORKCONFIG_2_DATA(pInterface);
3882	memcpy(pMac, pData->aPROM, sizeof(*pMac));
3883	return VINF_SUCCESS;
3884	}
3885
3886
3887	/**
3888	* Gets the new link state.
3889	*
3890	* @returns The current link state.
3891	* @param pInterface Pointer to the interface structure containing the called function pointer.
3892	* @thread EMT
3893	*/
3894	static DECLCALLBACK(PDMNETWORKLINKSTATE) pcnetGetLinkState(PPDMINETWORKCONFIG pInterface)
3895	{
3896	PCNetState *pData = INETWORKCONFIG_2_DATA(pInterface);
3897	if (pData->fLinkUp && !pData->fLinkTempDown)
3898	return PDMNETWORKLINKSTATE_UP;
3899	if (!pData->fLinkUp)
3900	return PDMNETWORKLINKSTATE_DOWN;
3901	if (pData->fLinkTempDown)
3902	return PDMNETWORKLINKSTATE_DOWN_RESUME;
3903	AssertMsgFailed(("Invalid link state!\n"));
3904	return PDMNETWORKLINKSTATE_INVALID;
3905	}
3906
3907
3908	/**
3909	* Sets the new link state.
3910	*
3911	* @returns VBox status code.
3912	* @param pInterface Pointer to the interface structure containing the called function pointer.
3913	* @param enmState The new link state
3914	* @thread EMT
3915	*/
3916	static DECLCALLBACK(int) pcnetSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
3917	{
3918	PCNetState *pData = INETWORKCONFIG_2_DATA(pInterface);
3919	bool fLinkUp;
3920	if ( enmState != PDMNETWORKLINKSTATE_DOWN
3921	&& enmState != PDMNETWORKLINKSTATE_UP)
3922	{
3923	AssertMsgFailed(("Invalid parameter enmState=%d\n", enmState));
3924	return VERR_INVALID_PARAMETER;
3925	}
3926
3927	/* has the state changed? */
3928	fLinkUp = enmState == PDMNETWORKLINKSTATE_UP;
3929	if (pData->fLinkUp != fLinkUp)
3930	{
3931	pData->fLinkUp = fLinkUp;
3932	if (fLinkUp)
3933	{
3934	/* connect */
3935	pData->aCSR[0] &= ~(BIT(15) \| BIT(13)); /* ERR \| CERR - probably not 100% correct either... */
3936	pData->Led.Actual.s.fError = 0;
3937	}
3938	else
3939	{
3940	/* disconnect */
3941	pData->cLinkDownReported = 0;
3942	pData->aCSR[0] \|= BIT(15) \| BIT(13); /* ERR \| CERR (this is probably wrong) */
3943	pData->Led.Asserted.s.fError = pData->Led.Actual.s.fError = 1;
3944	}
3945	Assert(!PDMCritSectIsOwner(&pData->CritSect));
3946	pData->pDrv->pfnNotifyLinkChanged(pData->pDrv, enmState);
3947	}
3948	return VINF_SUCCESS;
3949	}
3950
3951
3952	/**
3953	* Gets the pointer to the status LED of a unit.
3954	*
3955	* @returns VBox status code.
3956	* @param pInterface Pointer to the interface structure containing the called function pointer.
3957	* @param iLUN The unit which status LED we desire.
3958	* @param ppLed Where to store the LED pointer.
3959	*/
3960	static DECLCALLBACK(int) pcnetQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
3961	{
3962	PCNetState pData = (PCNetState )( (uintptr_t)pInterface - RT_OFFSETOF(PCNetState, ILeds) );
3963	if (iLUN == 0)
3964	{
3965	*ppLed = &pData->Led;
3966	return VINF_SUCCESS;
3967	}
3968	return VERR_PDM_LUN_NOT_FOUND;
3969	}
3970
3971
3972	/**
3973	* @copydoc FNPDMDEVRESET
3974	*/
3975	static DECLCALLBACK(void) pcnetReset(PPDMDEVINS pDevIns)
3976	{
3977	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3978	if (pData->fLinkTempDown)
3979	{
3980	pData->cLinkDownReported = 0x10000;
3981	TMTimerStop(pData->pTimerRestore);
3982	pcnetTimerRestore(pDevIns, pData->pTimerRestore);
3983	}
3984
3985	/** @todo How to flush the queues? */
3986	pcnetHardReset(pData);
3987	}
3988
3989
3990	/**
3991	* @copydoc FNPDMDEVRELOCATE
3992	*/
3993	static DECLCALLBACK(void) pcnetRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
3994	{
3995	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
3996	pData->pDevInsGC = PDMDEVINS_2_GCPTR(pDevIns);
3997	pData->pXmitQueueGC = PDMQueueGCPtr(pData->pXmitQueueHC);
3998	pData->pCanRxQueueGC = PDMQueueGCPtr(pData->pCanRxQueueHC);
3999	#ifdef PCNET_NO_POLLING
4000	(RTHCUINTPTR )&pData->pfnEMInterpretInstructionGC += offDelta;
4001	#else
4002	pData->pTimerPollGC = TMTimerGCPtr(pData->pTimerPollHC);
4003	#endif
4004	}
4005
4006
4007	/**
4008	* Destruct a device instance.
4009	*
4010	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
4011	* resources can be freed correctly.
4012	*
4013	* @returns VBox status.
4014	* @param pDevIns The device instance data.
4015	*/
4016	static DECLCALLBACK(int) pcnetDestruct(PPDMDEVINS pDevIns)
4017	{
4018	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
4019
4020	PDMCritSectEnter(&pData->CritSect, VERR_ACCESS_DENIED);
4021
4022	RTSemEventDestroy(pData->hSendEventSem);
4023	pData->hSendEventSem = 0;
4024	PDMCritSectLeave(&pData->CritSect);
4025
4026	PDMR3CritSectDelete(&pData->CritSect);
4027	return VINF_SUCCESS;
4028	}
4029
4030
4031	/**
4032	* Construct a device instance for a VM.
4033	*
4034	* @returns VBox status.
4035	* @param pDevIns The device instance data.
4036	* If the registration structure is needed, pDevIns->pDevReg points to it.
4037	* @param iInstance Instance number. Use this to figure out which registers and such to use.
4038	* The device number is also found in pDevIns->iInstance, but since it's
4039	* likely to be freqently used PDM passes it as parameter.
4040	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
4041	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
4042	* iInstance it's expected to be used a bit in this function.
4043	*/
4044	static DECLCALLBACK(int) pcnetConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle)
4045	{
4046	PCNetState pData = PDMINS2DATA(pDevIns, PCNetState );
4047	PPDMIBASE pBase;
4048	char szTmp[128];
4049	int rc;
4050
4051	/* up to four instances are supported */
4052	Assert((iInstance >= 0) && (iInstance < 4));
4053
4054	Assert(RT_ELEMENTS(pData->aBCR) == BCR_MAX_RAP);
4055	Assert(RT_ELEMENTS(pData->aMII) == MII_MAX_REG);
4056	Assert(sizeof(pData->abSendBuf) == RT_ALIGN_Z(sizeof(pData->abSendBuf), 16));
4057
4058	/*
4059	* Validate configuration.
4060	*/
4061	if (!CFGMR3AreValuesValid(pCfgHandle, "MAC\0CableConnected\0Am79C973\0GCEnabled\0R0Enabled\0"))
4062	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
4063	N_("Invalid configuraton for pcnet device"));
4064
4065	/*
4066	* Read the configuration.
4067	*/
4068	rc = CFGMR3QueryBytes(pCfgHandle, "MAC", &pData->MacConfigured, sizeof(pData->MacConfigured));
4069	if (VBOX_FAILURE(rc))
4070	return PDMDEV_SET_ERROR(pDevIns, rc,
4071	N_("Configuration error: Failed to get the \"MAC\" value"));
4072	rc = CFGMR3QueryBool(pCfgHandle, "CableConnected", &pData->fLinkUp);
4073	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
4074	pData->fLinkUp = true;
4075	else if (VBOX_FAILURE(rc))
4076	return PDMDEV_SET_ERROR(pDevIns, rc,
4077	N_("Configuration error: Failed to get the \"CableConnected\" value"));
4078
4079	rc = CFGMR3QueryBool(pCfgHandle, "Am79C973", &pData->fAm79C973);
4080	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
4081	pData->fAm79C973 = false;
4082	else if (VBOX_FAILURE(rc))
4083	return PDMDEV_SET_ERROR(pDevIns, rc,
4084	N_("Configuration error: Failed to get the \"Am79C973\" value"));
4085
4086	#ifdef PCNET_GC_ENABLED
4087	rc = CFGMR3QueryBool(pCfgHandle, "GCEnabled", &pData->fGCEnabled);
4088	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
4089	pData->fGCEnabled = true;
4090	else if (VBOX_FAILURE(rc))
4091	return PDMDEV_SET_ERROR(pDevIns, rc,
4092	N_("Configuration error: Failed to get the \"GCEnabled\" value"));
4093
4094	rc = CFGMR3QueryBool(pCfgHandle, "R0Enabled", &pData->fR0Enabled);
4095	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
4096	pData->fR0Enabled = true;
4097	else if (VBOX_FAILURE(rc))
4098	return PDMDEV_SET_ERROR(pDevIns, rc,
4099	N_("Configuration error: Failed to get the \"R0Enabled\" value"));
4100
4101	#else /* !PCNET_GC_ENABLED */
4102	pData->fGCEnabled = false;
4103	pData->fR0Enabled = false;
4104	#endif /* !PCNET_GC_ENABLED */
4105
4106
4107	/*
4108	* Initialize data (most of it anyway).
4109	*/
4110	pData->pDevInsHC = pDevIns;
4111	pData->pDevInsGC = PDMDEVINS_2_GCPTR(pDevIns);
4112	pData->Led.u32Magic = PDMLED_MAGIC;
4113	/* IBase */
4114	pData->IBase.pfnQueryInterface = pcnetQueryInterface;
4115	/* INeworkPort */
4116	pData->INetworkPort.pfnCanReceive = pcnetCanReceive;
4117	pData->INetworkPort.pfnReceive = pcnetReceive;
4118	/* INetworkConfig */
4119	pData->INetworkConfig.pfnGetMac = pcnetGetMac;
4120	pData->INetworkConfig.pfnGetLinkState = pcnetGetLinkState;
4121	pData->INetworkConfig.pfnSetLinkState = pcnetSetLinkState;
4122	/* ILeds */
4123	pData->ILeds.pfnQueryStatusLed = pcnetQueryStatusLed;
4124
4125	/* PCI Device */
4126	PCIDevSetVendorId(&pData->PciDev, 0x1022);
4127	PCIDevSetDeviceId(&pData->PciDev, 0x2000);
4128	pData->PciDev.config[0x04] = 0x07; /* command */
4129	pData->PciDev.config[0x05] = 0x00;
4130	pData->PciDev.config[0x06] = 0x80; /* status */
4131	pData->PciDev.config[0x07] = 0x02;
4132	pData->PciDev.config[0x08] = pData->fAm79C973 ? 0x30 : 0x10; /* revision */
4133	pData->PciDev.config[0x09] = 0x00;
4134	pData->PciDev.config[0x0a] = 0x00; /* ethernet network controller */
4135	pData->PciDev.config[0x0b] = 0x02;
4136	pData->PciDev.config[0x0e] = 0x00; /* header_type */
4137
4138	pData->PciDev.config[0x10] = 0x01; /* IO Base */
4139	pData->PciDev.config[0x11] = 0x00;
4140	pData->PciDev.config[0x12] = 0x00;
4141	pData->PciDev.config[0x13] = 0x00;
4142	pData->PciDev.config[0x14] = 0x00; /* MMIO Base */
4143	pData->PciDev.config[0x15] = 0x00;
4144	pData->PciDev.config[0x16] = 0x00;
4145	pData->PciDev.config[0x17] = 0x00;
4146
4147	/* subsystem and subvendor IDs */
4148	pData->PciDev.config[0x2c] = 0x22; /* subsystem vendor id */
4149	pData->PciDev.config[0x2d] = 0x10;
4150	pData->PciDev.config[0x2e] = 0x00; /* subsystem id */
4151	pData->PciDev.config[0x2f] = 0x20;
4152	pData->PciDev.config[0x3d] = 1; /* interrupt pin 0 */
4153	pData->PciDev.config[0x3e] = 0x06;
4154	pData->PciDev.config[0x3f] = 0xff;
4155
4156	/*
4157	* Register the PCI device, its I/O regions, the timer and the saved state item.
4158	*/
4159	rc = PDMDevHlpPCIRegister(pDevIns, &pData->PciDev);
4160	if (VBOX_FAILURE(rc))
4161	return rc;
4162	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0, PCNET_IOPORT_SIZE,
4163	PCI_ADDRESS_SPACE_IO, pcnetIOPortMap);
4164	if (VBOX_FAILURE(rc))
4165	return rc;
4166	rc = PDMDevHlpPCIIORegionRegister(pDevIns, 1, PCNET_PNPMMIO_SIZE,
4167	PCI_ADDRESS_SPACE_MEM, pcnetMMIOMap);
4168	if (VBOX_FAILURE(rc))
4169	return rc;
4170
4171	#ifdef PCNET_NO_POLLING
4172	rc = PDMR3GetSymbolR0Lazy(PDMDevHlpGetVM(pDevIns), NULL, "EMInterpretInstruction", &pData->pfnEMInterpretInstructionR0);
4173	if (VBOX_SUCCESS(rc))
4174	{
4175	/*
4176	* Resolve the GC handler.
4177	*/
4178	RTGCPTR pfnHandlerGC;
4179	rc = PDMR3GetSymbolGCLazy(PDMDevHlpGetVM(pDevIns), NULL, "EMInterpretInstruction", (RTGCPTR *)&pData->pfnEMInterpretInstructionGC);
4180	}
4181	if (VBOX_FAILURE(rc))
4182	{
4183	AssertMsgFailed(("PDMR3GetSymbolGCLazy -> %Vrc\n", rc));
4184	return rc;
4185	}
4186	#else
4187	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, pcnetTimer,
4188	"PCNet Poll Timer", &pData->pTimerPollHC);
4189	if (VBOX_FAILURE(rc))
4190	{
4191	AssertMsgFailed(("pfnTMTimerCreate -> %Vrc\n", rc));
4192	return rc;
4193	}
4194	#endif
4195	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, pcnetTimerRestore,
4196	"PCNet Restore Timer", &pData->pTimerRestore);
4197	if (VBOX_FAILURE(rc))
4198	{
4199	AssertMsgFailed(("pfnTMTimerCreate -> %Vrc\n", rc));
4200	return rc;
4201	}
4202	/** @todo r=bird: we're not locking down pcnet properly during saving and loading! */
4203	rc = PDMDevHlpSSMRegister(pDevIns, pDevIns->pDevReg->szDeviceName, iInstance,
4204	PCNET_SAVEDSTATE_VERSION, sizeof(*pData),
4205	pcnetSavePrep, pcnetSaveExec, NULL,
4206	NULL, pcnetLoadExec, NULL);
4207	if (VBOX_FAILURE(rc))
4208	return rc;
4209
4210	/*
4211	* Initialize critical section.
4212	* This must of course be done before attaching drivers or anything else which can call us back..
4213	*/
4214	char szName[24];
4215	RTStrPrintf(szName, sizeof(szName), "PCNet#%d", iInstance);
4216	rc = PDMDevHlpCritSectInit(pDevIns, &pData->CritSect, szName);
4217	if (VBOX_FAILURE(rc))
4218	return rc;
4219
4220	/*
4221	* Create the transmit queue.
4222	*/
4223	rc = PDMDevHlpPDMQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
4224	pcnetXmitQueueConsumer, true, &pData->pXmitQueueHC);
4225	if (VBOX_FAILURE(rc))
4226	return rc;
4227	pData->pXmitQueueGC = PDMQueueGCPtr(pData->pXmitQueueHC);
4228
4229	/*
4230	* Create the RX notifer signaller.
4231	*/
4232	rc = PDMDevHlpPDMQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
4233	pcnetCanRxQueueConsumer, true, &pData->pCanRxQueueHC);
4234	if (VBOX_FAILURE(rc))
4235	return rc;
4236	pData->pCanRxQueueGC = PDMQueueGCPtr(pData->pCanRxQueueHC);
4237
4238	/*
4239	* Register the info item.
4240	*/
4241	RTStrPrintf(szTmp, sizeof(szTmp), "pcnet%d", pDevIns->iInstance);
4242	PDMDevHlpDBGFInfoRegister(pDevIns, szTmp, "PCNET info.", pcnetInfo);
4243
4244	/*
4245	* Attach status driver (optional).
4246	*/
4247	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pData->IBase, &pBase, "Status Port");
4248	if (VBOX_SUCCESS(rc))
4249	pData->pLedsConnector = (PPDMILEDCONNECTORS)
4250	pBase->pfnQueryInterface(pBase, PDMINTERFACE_LED_CONNECTORS);
4251	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
4252	{
4253	AssertMsgFailed(("Failed to attach to status driver. rc=%Vrc\n", rc));
4254	return rc;
4255	}
4256
4257	/*
4258	* Attach driver.
4259	*/
4260	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pData->IBase, &pData->pDrvBase, "Network Port");
4261	if (VBOX_SUCCESS(rc))
4262	{
4263	if (rc == VINF_NAT_DNS)
4264	{
4265	#ifdef __LINUX__
4266	VMSetRuntimeError(PDMDevHlpGetVM(pDevIns), false, "NoDNSforNAT",
4267	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"));
4268	#else
4269	VMSetRuntimeError(PDMDevHlpGetVM(pDevIns), false, "NoDNSforNAT",
4270	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"));
4271	#endif
4272	}
4273	pData->pDrv = (PPDMINETWORKCONNECTOR)
4274	pData->pDrvBase->pfnQueryInterface(pData->pDrvBase, PDMINTERFACE_NETWORK_CONNECTOR);
4275	if (!pData->pDrv)
4276	{
4277	AssertMsgFailed(("Failed to obtain the PDMINTERFACE_NETWORK_CONNECTOR interface!\n"));
4278	return VERR_PDM_MISSING_INTERFACE_BELOW;
4279	}
4280	}
4281	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
4282	Log(("No attached driver!\n"));
4283	else
4284	return rc;
4285
4286	/*
4287	* Reset the device state. (Do after attaching.)
4288	*/
4289	pcnetHardReset(pData);
4290
4291	/* Create send queue for the async send thread. */
4292	rc = RTSemEventCreate(&pData->hSendEventSem);
4293	AssertRC(rc);
4294
4295	/* Create asynchronous thread */
4296	rc = RTThreadCreate(&pData->hSendThread, pcnetAsyncSend, (void )pData, 1281024, RTTHREADTYPE_IO, 0, "PCNET_SEND");
4297	AssertRC(rc);
4298
4299	#ifdef VBOX_WITH_STATISTICS
4300	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatMMIOReadGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO reads in GC", "/Devices/PCNet%d/MMIO/ReadGC", iInstance);
4301	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatMMIOReadHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO reads in HC", "/Devices/PCNet%d/MMIO/ReadHC", iInstance);
4302	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatMMIOWriteGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO writes in GC", "/Devices/PCNet%d/MMIO/WriteGC", iInstance);
4303	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatMMIOWriteHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling MMIO writes in HC", "/Devices/PCNet%d/MMIO/WriteHC", iInstance);
4304	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatAPROMRead, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling APROM reads", "/Devices/PCNet%d/IO/APROMRead", iInstance);
4305	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatAPROMWrite, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling APROM writes", "/Devices/PCNet%d/IO/APROMWrite", iInstance);
4306	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatIOReadGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNetIO reads in GC", "/Devices/PCNet%d/IO/ReadGC", iInstance);
4307	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatIOReadHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNetIO reads in HC", "/Devices/PCNet%d/IO/ReadHC", iInstance);
4308	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatIOWriteGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet IO writes in GC", "/Devices/PCNet%d/IO/WriteGC", iInstance);
4309	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatIOWriteHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet IO writes in HC", "/Devices/PCNet%d/IO/WriteHC", iInstance);
4310	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTimer, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet Timer", "/Devices/PCNet%d/Timer", iInstance);
4311	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet receive", "/Devices/PCNet%d/Receive", iInstance);
4312	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet transmit in HC", "/Devices/PCNet%d/Transmit/Total", iInstance);
4313	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTransmitSend, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet send transmit in HC", "/Devices/PCNet%d/Transmit/Send", iInstance);
4314	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTdtePollGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TdtePoll in GC", "/Devices/PCNet%d/TdtePollGC", iInstance);
4315	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTdtePollHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TdtePoll in HC", "/Devices/PCNet%d/TdtePollHC", iInstance);
4316	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRdtePollGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet RdtePoll in GC", "/Devices/PCNet%d/RdtePollGC", iInstance);
4317	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRdtePollHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet RdtePoll in HC", "/Devices/PCNet%d/RdtePollHC", iInstance);
4318
4319	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTmdStoreGC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TmdStore in GC", "/Devices/PCNet%d/TmdStoreGC", iInstance);
4320	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTmdStoreHC, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet TmdStore in HC", "/Devices/PCNet%d/TmdStoreHC", iInstance);
4321
4322	unsigned i;
4323	for (i = 0; i < ELEMENTS(pData->aStatXmitFlush) - 1; i++)
4324	PDMDevHlpSTAMRegisterF(pDevIns, &pData->aStatXmitFlush[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitFlushIrq/%d", iInstance, i + 1);
4325	PDMDevHlpSTAMRegisterF(pDevIns, &pData->aStatXmitFlush[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitFlushIrq/%d+", iInstance, i + 1);
4326
4327	for (i = 0; i < ELEMENTS(pData->aStatXmitChainCounts) - 1; i++)
4328	PDMDevHlpSTAMRegisterF(pDevIns, &pData->aStatXmitChainCounts[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitChainCounts/%d", iInstance, i + 1);
4329	PDMDevHlpSTAMRegisterF(pDevIns, &pData->aStatXmitChainCounts[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/XmitChainCounts/%d+", iInstance, i + 1);
4330
4331	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatXmitSkipCurrent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/Devices/PCNet%d/Xmit/Skipped", iInstance, i + 1);
4332
4333	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatInterrupt, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet interrupt checks", "/Devices/PCNet%d/Interrupt", iInstance);
4334	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatPollTimer, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling PCNet poll timer", "/Devices/PCNet%d/PollTimer", iInstance);
4335	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatMIIReads, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of MII reads", "/Devices/PCNet%d/MIIReads", iInstance);
4336	# ifdef PCNET_NO_POLLING
4337	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRCVRingWrite, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of receive ring writes", "/Devices/PCNet%d/Ring/RCVWrites", iInstance);
4338	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatTXRingWrite, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of transmit ring writes", "/Devices/PCNet%d/Ring/TXWrites", iInstance);
4339	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteHC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/HC/Writes", iInstance);
4340	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/R0/Writes", iInstance);
4341	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteGC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored ring page writes", "/Devices/PCNet%d/Ring/GC/Writes", iInstance);
4342	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteFailedHC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/HC/Failed", iInstance);
4343	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteFailedR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/R0/Failed", iInstance);
4344	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteFailedGC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of failed ring page writes", "/Devices/PCNet%d/Ring/GC/Failed", iInstance);
4345	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteOutsideRangeHC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring range", "/Devices/PCNet%d/Ring/HC/Outside", iInstance);
4346	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteOutsideRangeR0, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring range", "/Devices/PCNet%d/Ring/R0/Outside", iInstance);
4347	PDMDevHlpSTAMRegisterF(pDevIns, &pData->StatRingWriteOutsideRangeGC, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of monitored writes outside ring range", "/Devices/PCNet%d/Ring/GC/Outside", iInstance);
4348	# endif /* PCNET_NO_POLLING */
4349	#endif
4350
4351	return VINF_SUCCESS;
4352	}
4353
4354
4355	/**
4356	* The device registration structure.
4357	*/
4358	const PDMDEVREG g_DevicePCNet =
4359	{
4360	/* u32Version */
4361	PDM_DEVREG_VERSION,
4362	/* szDeviceName */
4363	"pcnet",
4364	/* szGCMod */
4365	#ifdef PCNET_GC_ENABLED
4366	"VBoxDDGC.gc",
4367	"VBoxDDR0.r0",
4368	#else
4369	"",
4370	"",
4371	#endif
4372	/* pszDescription */
4373	"AMD PC-Net II Ethernet controller.\n",
4374	/* fFlags */
4375	#ifdef PCNET_GC_ENABLED
4376	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GC \| PDM_DEVREG_FLAGS_R0,
4377	#else
4378	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT,
4379	#endif
4380	/* fClass */
4381	PDM_DEVREG_CLASS_NETWORK,
4382	/* cMaxInstances */
4383	4,
4384	/* cbInstance */
4385	sizeof(PCNetState),
4386	/* pfnConstruct */
4387	pcnetConstruct,
4388	/* pfnDestruct */
4389	pcnetDestruct,
4390	/* pfnRelocate */
4391	pcnetRelocate,
4392	/* pfnIOCtl */
4393	NULL,
4394	/* pfnPowerOn */
4395	NULL,
4396	/* pfnReset */
4397	pcnetReset,
4398	/* pfnSuspend */
4399	NULL,
4400	/* pfnResume */
4401	NULL,
4402	/* pfnAttach */
4403	NULL,
4404	/* pfnDetach */
4405	NULL,
4406	/* pfnQueryInterface. */
4407	NULL
4408	};
4409
4410	#endif /* IN_RING3 */
4411	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
4412

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source: vbox/trunk/src/VBox/Devices/Network/DevPCNet.cpp@ 2598

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