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[deliverable/linux.git] / drivers / net / tc35815.c
1 /*
2 * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux.
3 *
4 * Based on skelton.c by Donald Becker.
5 *
6 * This driver is a replacement of older and less maintained version.
7 * This is a header of the older version:
8 * -----<snip>-----
9 * Copyright 2001 MontaVista Software Inc.
10 * Author: MontaVista Software, Inc.
11 * ahennessy@mvista.com
12 * Copyright (C) 2000-2001 Toshiba Corporation
13 * static const char *version =
14 * "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n";
15 * -----<snip>-----
16 *
17 * This file is subject to the terms and conditions of the GNU General Public
18 * License. See the file "COPYING" in the main directory of this archive
19 * for more details.
20 *
21 * (C) Copyright TOSHIBA CORPORATION 2004-2005
22 * All Rights Reserved.
23 */
24
25 #ifdef TC35815_NAPI
26 #define DRV_VERSION "1.36-NAPI"
27 #else
28 #define DRV_VERSION "1.36"
29 #endif
30 static const char *version = "tc35815.c:v" DRV_VERSION "\n";
31 #define MODNAME "tc35815"
32
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/fcntl.h>
37 #include <linux/interrupt.h>
38 #include <linux/ioport.h>
39 #include <linux/in.h>
40 #include <linux/slab.h>
41 #include <linux/string.h>
42 #include <linux/spinlock.h>
43 #include <linux/errno.h>
44 #include <linux/init.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/delay.h>
49 #include <linux/pci.h>
50 #include <linux/mii.h>
51 #include <linux/ethtool.h>
52 #include <linux/platform_device.h>
53 #include <asm/io.h>
54 #include <asm/byteorder.h>
55
56 /* First, a few definitions that the brave might change. */
57
58 #define GATHER_TXINT /* On-Demand Tx Interrupt */
59 #define WORKAROUND_LOSTCAR
60 #define WORKAROUND_100HALF_PROMISC
61 /* #define TC35815_USE_PACKEDBUFFER */
62
63 typedef enum {
64 TC35815CF = 0,
65 TC35815_NWU,
66 TC35815_TX4939,
67 } board_t;
68
69 /* indexed by board_t, above */
70 static const struct {
71 const char *name;
72 } board_info[] __devinitdata = {
73 { "TOSHIBA TC35815CF 10/100BaseTX" },
74 { "TOSHIBA TC35815 with Wake on LAN" },
75 { "TOSHIBA TC35815/TX4939" },
76 };
77
78 static const struct pci_device_id tc35815_pci_tbl[] = {
79 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF },
80 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU },
81 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 },
82 {0,}
83 };
84 MODULE_DEVICE_TABLE (pci, tc35815_pci_tbl);
85
86 /* see MODULE_PARM_DESC */
87 static struct tc35815_options {
88 int speed;
89 int duplex;
90 int doforce;
91 } options;
92
93 /*
94 * Registers
95 */
96 struct tc35815_regs {
97 __u32 DMA_Ctl; /* 0x00 */
98 __u32 TxFrmPtr;
99 __u32 TxThrsh;
100 __u32 TxPollCtr;
101 __u32 BLFrmPtr;
102 __u32 RxFragSize;
103 __u32 Int_En;
104 __u32 FDA_Bas;
105 __u32 FDA_Lim; /* 0x20 */
106 __u32 Int_Src;
107 __u32 unused0[2];
108 __u32 PauseCnt;
109 __u32 RemPauCnt;
110 __u32 TxCtlFrmStat;
111 __u32 unused1;
112 __u32 MAC_Ctl; /* 0x40 */
113 __u32 CAM_Ctl;
114 __u32 Tx_Ctl;
115 __u32 Tx_Stat;
116 __u32 Rx_Ctl;
117 __u32 Rx_Stat;
118 __u32 MD_Data;
119 __u32 MD_CA;
120 __u32 CAM_Adr; /* 0x60 */
121 __u32 CAM_Data;
122 __u32 CAM_Ena;
123 __u32 PROM_Ctl;
124 __u32 PROM_Data;
125 __u32 Algn_Cnt;
126 __u32 CRC_Cnt;
127 __u32 Miss_Cnt;
128 };
129
130 /*
131 * Bit assignments
132 */
133 /* DMA_Ctl bit asign ------------------------------------------------------- */
134 #define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */
135 #define DMA_RxAlign_1 0x00400000
136 #define DMA_RxAlign_2 0x00800000
137 #define DMA_RxAlign_3 0x00c00000
138 #define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */
139 #define DMA_IntMask 0x00040000 /* 1:Interupt mask */
140 #define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
141 #define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
142 #define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
143 #define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
144 #define DMA_TestMode 0x00002000 /* 1:Test Mode */
145 #define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
146 #define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
147
148 /* RxFragSize bit asign ---------------------------------------------------- */
149 #define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
150 #define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
151
152 /* MAC_Ctl bit asign ------------------------------------------------------- */
153 #define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */
154 #define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */
155 #define MAC_MissRoll 0x00000400 /* 1:Missed Roll */
156 #define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */
157 #define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */
158 #define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/
159 #define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */
160 #define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */
161 #define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */
162 #define MAC_Reset 0x00000004 /* 1:Software Reset */
163 #define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */
164 #define MAC_HaltReq 0x00000001 /* 1:Halt request */
165
166 /* PROM_Ctl bit asign ------------------------------------------------------ */
167 #define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */
168 #define PROM_Read 0x00004000 /*10:Read operation */
169 #define PROM_Write 0x00002000 /*01:Write operation */
170 #define PROM_Erase 0x00006000 /*11:Erase operation */
171 /*00:Enable or Disable Writting, */
172 /* as specified in PROM_Addr. */
173 #define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */
174 /*00xxxx: disable */
175
176 /* CAM_Ctl bit asign ------------------------------------------------------- */
177 #define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */
178 #define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/
179 /* accept other */
180 #define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */
181 #define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */
182 #define CAM_StationAcc 0x00000001 /* 1:unicast accept */
183
184 /* CAM_Ena bit asign ------------------------------------------------------- */
185 #define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
186 #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
187 #define CAM_Ena_Bit(index) (1<<(index))
188 #define CAM_ENTRY_DESTINATION 0
189 #define CAM_ENTRY_SOURCE 1
190 #define CAM_ENTRY_MACCTL 20
191
192 /* Tx_Ctl bit asign -------------------------------------------------------- */
193 #define Tx_En 0x00000001 /* 1:Transmit enable */
194 #define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */
195 #define Tx_NoPad 0x00000004 /* 1:Suppress Padding */
196 #define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */
197 #define Tx_FBack 0x00000010 /* 1:Fast Back-off */
198 #define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */
199 #define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */
200 #define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */
201 #define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */
202 #define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */
203 #define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */
204 #define Tx_EnComp 0x00004000 /* 1:Enable Completion */
205
206 /* Tx_Stat bit asign ------------------------------------------------------- */
207 #define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */
208 #define Tx_ExColl 0x00000010 /* Excessive Collision */
209 #define Tx_TXDefer 0x00000020 /* Transmit Defered */
210 #define Tx_Paused 0x00000040 /* Transmit Paused */
211 #define Tx_IntTx 0x00000080 /* Interrupt on Tx */
212 #define Tx_Under 0x00000100 /* Underrun */
213 #define Tx_Defer 0x00000200 /* Deferral */
214 #define Tx_NCarr 0x00000400 /* No Carrier */
215 #define Tx_10Stat 0x00000800 /* 10Mbps Status */
216 #define Tx_LateColl 0x00001000 /* Late Collision */
217 #define Tx_TxPar 0x00002000 /* Tx Parity Error */
218 #define Tx_Comp 0x00004000 /* Completion */
219 #define Tx_Halted 0x00008000 /* Tx Halted */
220 #define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */
221
222 /* Rx_Ctl bit asign -------------------------------------------------------- */
223 #define Rx_EnGood 0x00004000 /* 1:Enable Good */
224 #define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */
225 #define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */
226 #define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */
227 #define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */
228 #define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */
229 #define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */
230 #define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */
231 #define Rx_ShortEn 0x00000008 /* 1:Short Enable */
232 #define Rx_LongEn 0x00000004 /* 1:Long Enable */
233 #define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */
234 #define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */
235
236 /* Rx_Stat bit asign ------------------------------------------------------- */
237 #define Rx_Halted 0x00008000 /* Rx Halted */
238 #define Rx_Good 0x00004000 /* Rx Good */
239 #define Rx_RxPar 0x00002000 /* Rx Parity Error */
240 /* 0x00001000 not use */
241 #define Rx_LongErr 0x00000800 /* Rx Long Error */
242 #define Rx_Over 0x00000400 /* Rx Overflow */
243 #define Rx_CRCErr 0x00000200 /* Rx CRC Error */
244 #define Rx_Align 0x00000100 /* Rx Alignment Error */
245 #define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */
246 #define Rx_IntRx 0x00000040 /* Rx Interrupt */
247 #define Rx_CtlRecd 0x00000020 /* Rx Control Receive */
248
249 #define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */
250
251 /* Int_En bit asign -------------------------------------------------------- */
252 #define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
253 #define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */
254 #define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
255 #define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
256 #define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
257 #define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
258 #define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
259 #define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
260 #define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
261 #define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
262 #define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
263 #define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
264 /* Exhausted Enable */
265
266 /* Int_Src bit asign ------------------------------------------------------- */
267 #define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
268 #define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
269 #define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
270 #define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
271 #define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
272 #define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
273 #define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
274 #define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
275 #define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
276 #define Int_SWInt 0x00000020 /* 1:Software request & Clear */
277 #define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
278 #define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
279 #define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
280 #define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
281 #define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
282
283 /* MD_CA bit asign --------------------------------------------------------- */
284 #define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
285 #define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
286 #define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
287
288
289 /*
290 * Descriptors
291 */
292
293 /* Frame descripter */
294 struct FDesc {
295 volatile __u32 FDNext;
296 volatile __u32 FDSystem;
297 volatile __u32 FDStat;
298 volatile __u32 FDCtl;
299 };
300
301 /* Buffer descripter */
302 struct BDesc {
303 volatile __u32 BuffData;
304 volatile __u32 BDCtl;
305 };
306
307 #define FD_ALIGN 16
308
309 /* Frame Descripter bit asign ---------------------------------------------- */
310 #define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
311 #define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
312 #define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
313 #define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
314 #define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
315 #define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
316 #define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
317 #define FD_FrmOpt_Packing 0x04000000 /* Rx only */
318 #define FD_CownsFD 0x80000000 /* FD Controller owner bit */
319 #define FD_Next_EOL 0x00000001 /* FD EOL indicator */
320 #define FD_BDCnt_SHIFT 16
321
322 /* Buffer Descripter bit asign --------------------------------------------- */
323 #define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
324 #define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
325 #define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
326 #define BD_CownsBD 0x80000000 /* BD Controller owner bit */
327 #define BD_RxBDID_SHIFT 16
328 #define BD_RxBDSeqN_SHIFT 24
329
330
331 /* Some useful constants. */
332 #undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
333
334 #ifdef NO_CHECK_CARRIER
335 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
336 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
337 Tx_En) /* maybe 0x7b01 */
338 #else
339 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
340 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
341 Tx_En) /* maybe 0x7b01 */
342 #endif
343 #define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
344 | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
345 #define INT_EN_CMD (Int_NRAbtEn | \
346 Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
347 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
348 Int_STargAbtEn | \
349 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
350 #define DMA_CTL_CMD DMA_BURST_SIZE
351 #define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF)
352
353 /* Tuning parameters */
354 #define DMA_BURST_SIZE 32
355 #define TX_THRESHOLD 1024
356 #define TX_THRESHOLD_MAX 1536 /* used threshold with packet max byte for low pci transfer ability.*/
357 #define TX_THRESHOLD_KEEP_LIMIT 10 /* setting threshold max value when overrun error occured this count. */
358
359 /* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
360 #ifdef TC35815_USE_PACKEDBUFFER
361 #define FD_PAGE_NUM 2
362 #define RX_BUF_NUM 8 /* >= 2 */
363 #define RX_FD_NUM 250 /* >= 32 */
364 #define TX_FD_NUM 128
365 #define RX_BUF_SIZE PAGE_SIZE
366 #else /* TC35815_USE_PACKEDBUFFER */
367 #define FD_PAGE_NUM 4
368 #define RX_BUF_NUM 128 /* < 256 */
369 #define RX_FD_NUM 256 /* >= 32 */
370 #define TX_FD_NUM 128
371 #if RX_CTL_CMD & Rx_LongEn
372 #define RX_BUF_SIZE PAGE_SIZE
373 #elif RX_CTL_CMD & Rx_StripCRC
374 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 4 + 2, 32) /* +2: reserve */
375 #else
376 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 2, 32) /* +2: reserve */
377 #endif
378 #endif /* TC35815_USE_PACKEDBUFFER */
379 #define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */
380 #define NAPI_WEIGHT 16
381
382 struct TxFD {
383 struct FDesc fd;
384 struct BDesc bd;
385 struct BDesc unused;
386 };
387
388 struct RxFD {
389 struct FDesc fd;
390 struct BDesc bd[0]; /* variable length */
391 };
392
393 struct FrFD {
394 struct FDesc fd;
395 struct BDesc bd[RX_BUF_NUM];
396 };
397
398
399 #define tc_readl(addr) ioread32(addr)
400 #define tc_writel(d, addr) iowrite32(d, addr)
401
402 #define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
403
404 /* Timer state engine. */
405 enum tc35815_timer_state {
406 arbwait = 0, /* Waiting for auto negotiation to complete. */
407 lupwait = 1, /* Auto-neg complete, awaiting link-up status. */
408 ltrywait = 2, /* Forcing try of all modes, from fastest to slowest. */
409 asleep = 3, /* Time inactive. */
410 lcheck = 4, /* Check link status. */
411 };
412
413 /* Information that need to be kept for each board. */
414 struct tc35815_local {
415 struct pci_dev *pci_dev;
416
417 struct net_device *dev;
418 struct napi_struct napi;
419
420 /* statistics */
421 struct {
422 int max_tx_qlen;
423 int tx_ints;
424 int rx_ints;
425 int tx_underrun;
426 } lstats;
427
428 /* Tx control lock. This protects the transmit buffer ring
429 * state along with the "tx full" state of the driver. This
430 * means all netif_queue flow control actions are protected
431 * by this lock as well.
432 */
433 spinlock_t lock;
434
435 int phy_addr;
436 int fullduplex;
437 unsigned short saved_lpa;
438 struct timer_list timer;
439 enum tc35815_timer_state timer_state; /* State of auto-neg timer. */
440 unsigned int timer_ticks; /* Number of clicks at each state */
441
442 /*
443 * Transmitting: Batch Mode.
444 * 1 BD in 1 TxFD.
445 * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER)
446 * 1 circular FD for Free Buffer List.
447 * RX_BUF_NUM BD in Free Buffer FD.
448 * One Free Buffer BD has PAGE_SIZE data buffer.
449 * Or Non-Packing Mode.
450 * 1 circular FD for Free Buffer List.
451 * RX_BUF_NUM BD in Free Buffer FD.
452 * One Free Buffer BD has ETH_FRAME_LEN data buffer.
453 */
454 void * fd_buf; /* for TxFD, RxFD, FrFD */
455 dma_addr_t fd_buf_dma;
456 struct TxFD *tfd_base;
457 unsigned int tfd_start;
458 unsigned int tfd_end;
459 struct RxFD *rfd_base;
460 struct RxFD *rfd_limit;
461 struct RxFD *rfd_cur;
462 struct FrFD *fbl_ptr;
463 #ifdef TC35815_USE_PACKEDBUFFER
464 unsigned char fbl_curid;
465 void * data_buf[RX_BUF_NUM]; /* packing */
466 dma_addr_t data_buf_dma[RX_BUF_NUM];
467 struct {
468 struct sk_buff *skb;
469 dma_addr_t skb_dma;
470 } tx_skbs[TX_FD_NUM];
471 #else
472 unsigned int fbl_count;
473 struct {
474 struct sk_buff *skb;
475 dma_addr_t skb_dma;
476 } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM];
477 #endif
478 struct mii_if_info mii;
479 unsigned short mii_id[2];
480 u32 msg_enable;
481 board_t boardtype;
482 };
483
484 static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt)
485 {
486 return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf);
487 }
488 #ifdef DEBUG
489 static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
490 {
491 return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma));
492 }
493 #endif
494 #ifdef TC35815_USE_PACKEDBUFFER
495 static inline void *rxbuf_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
496 {
497 int i;
498 for (i = 0; i < RX_BUF_NUM; i++) {
499 if (bus >= lp->data_buf_dma[i] &&
500 bus < lp->data_buf_dma[i] + PAGE_SIZE)
501 return (void *)((u8 *)lp->data_buf[i] +
502 (bus - lp->data_buf_dma[i]));
503 }
504 return NULL;
505 }
506
507 #define TC35815_DMA_SYNC_ONDEMAND
508 static void* alloc_rxbuf_page(struct pci_dev *hwdev, dma_addr_t *dma_handle)
509 {
510 #ifdef TC35815_DMA_SYNC_ONDEMAND
511 void *buf;
512 /* pci_map + pci_dma_sync will be more effective than
513 * pci_alloc_consistent on some archs. */
514 if ((buf = (void *)__get_free_page(GFP_ATOMIC)) == NULL)
515 return NULL;
516 *dma_handle = pci_map_single(hwdev, buf, PAGE_SIZE,
517 PCI_DMA_FROMDEVICE);
518 if (pci_dma_mapping_error(*dma_handle)) {
519 free_page((unsigned long)buf);
520 return NULL;
521 }
522 return buf;
523 #else
524 return pci_alloc_consistent(hwdev, PAGE_SIZE, dma_handle);
525 #endif
526 }
527
528 static void free_rxbuf_page(struct pci_dev *hwdev, void *buf, dma_addr_t dma_handle)
529 {
530 #ifdef TC35815_DMA_SYNC_ONDEMAND
531 pci_unmap_single(hwdev, dma_handle, PAGE_SIZE, PCI_DMA_FROMDEVICE);
532 free_page((unsigned long)buf);
533 #else
534 pci_free_consistent(hwdev, PAGE_SIZE, buf, dma_handle);
535 #endif
536 }
537 #else /* TC35815_USE_PACKEDBUFFER */
538 static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev,
539 struct pci_dev *hwdev,
540 dma_addr_t *dma_handle)
541 {
542 struct sk_buff *skb;
543 skb = dev_alloc_skb(RX_BUF_SIZE);
544 if (!skb)
545 return NULL;
546 *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE,
547 PCI_DMA_FROMDEVICE);
548 if (pci_dma_mapping_error(*dma_handle)) {
549 dev_kfree_skb_any(skb);
550 return NULL;
551 }
552 skb_reserve(skb, 2); /* make IP header 4byte aligned */
553 return skb;
554 }
555
556 static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle)
557 {
558 pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE,
559 PCI_DMA_FROMDEVICE);
560 dev_kfree_skb_any(skb);
561 }
562 #endif /* TC35815_USE_PACKEDBUFFER */
563
564 /* Index to functions, as function prototypes. */
565
566 static int tc35815_open(struct net_device *dev);
567 static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev);
568 static irqreturn_t tc35815_interrupt(int irq, void *dev_id);
569 #ifdef TC35815_NAPI
570 static int tc35815_rx(struct net_device *dev, int limit);
571 static int tc35815_poll(struct napi_struct *napi, int budget);
572 #else
573 static void tc35815_rx(struct net_device *dev);
574 #endif
575 static void tc35815_txdone(struct net_device *dev);
576 static int tc35815_close(struct net_device *dev);
577 static struct net_device_stats *tc35815_get_stats(struct net_device *dev);
578 static void tc35815_set_multicast_list(struct net_device *dev);
579 static void tc35815_tx_timeout(struct net_device *dev);
580 static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
581 #ifdef CONFIG_NET_POLL_CONTROLLER
582 static void tc35815_poll_controller(struct net_device *dev);
583 #endif
584 static const struct ethtool_ops tc35815_ethtool_ops;
585
586 /* Example routines you must write ;->. */
587 static void tc35815_chip_reset(struct net_device *dev);
588 static void tc35815_chip_init(struct net_device *dev);
589 static void tc35815_find_phy(struct net_device *dev);
590 static void tc35815_phy_chip_init(struct net_device *dev);
591
592 #ifdef DEBUG
593 static void panic_queues(struct net_device *dev);
594 #endif
595
596 static void tc35815_timer(unsigned long data);
597 static void tc35815_start_auto_negotiation(struct net_device *dev,
598 struct ethtool_cmd *ep);
599 static int tc_mdio_read(struct net_device *dev, int phy_id, int location);
600 static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
601 int val);
602
603 #ifdef CONFIG_CPU_TX49XX
604 /*
605 * Find a platform_device providing a MAC address. The platform code
606 * should provide a "tc35815-mac" device with a MAC address in its
607 * platform_data.
608 */
609 static int __devinit tc35815_mac_match(struct device *dev, void *data)
610 {
611 struct platform_device *plat_dev = to_platform_device(dev);
612 struct pci_dev *pci_dev = data;
613 unsigned int id = pci_dev->irq;
614 return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
615 }
616
617 static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
618 {
619 struct tc35815_local *lp = netdev_priv(dev);
620 struct device *pd = bus_find_device(&platform_bus_type, NULL,
621 lp->pci_dev, tc35815_mac_match);
622 if (pd) {
623 if (pd->platform_data)
624 memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN);
625 put_device(pd);
626 return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV;
627 }
628 return -ENODEV;
629 }
630 #else
631 static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
632 {
633 return -ENODEV;
634 }
635 #endif
636
637 static int __devinit tc35815_init_dev_addr (struct net_device *dev)
638 {
639 struct tc35815_regs __iomem *tr =
640 (struct tc35815_regs __iomem *)dev->base_addr;
641 int i;
642
643 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
644 ;
645 for (i = 0; i < 6; i += 2) {
646 unsigned short data;
647 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl);
648 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
649 ;
650 data = tc_readl(&tr->PROM_Data);
651 dev->dev_addr[i] = data & 0xff;
652 dev->dev_addr[i+1] = data >> 8;
653 }
654 if (!is_valid_ether_addr(dev->dev_addr))
655 return tc35815_read_plat_dev_addr(dev);
656 return 0;
657 }
658
659 static int __devinit tc35815_init_one (struct pci_dev *pdev,
660 const struct pci_device_id *ent)
661 {
662 void __iomem *ioaddr = NULL;
663 struct net_device *dev;
664 struct tc35815_local *lp;
665 int rc;
666 DECLARE_MAC_BUF(mac);
667
668 static int printed_version;
669 if (!printed_version++) {
670 printk(version);
671 dev_printk(KERN_DEBUG, &pdev->dev,
672 "speed:%d duplex:%d doforce:%d\n",
673 options.speed, options.duplex, options.doforce);
674 }
675
676 if (!pdev->irq) {
677 dev_warn(&pdev->dev, "no IRQ assigned.\n");
678 return -ENODEV;
679 }
680
681 /* dev zeroed in alloc_etherdev */
682 dev = alloc_etherdev (sizeof (*lp));
683 if (dev == NULL) {
684 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
685 return -ENOMEM;
686 }
687 SET_NETDEV_DEV(dev, &pdev->dev);
688 lp = netdev_priv(dev);
689 lp->dev = dev;
690
691 /* enable device (incl. PCI PM wakeup), and bus-mastering */
692 rc = pcim_enable_device(pdev);
693 if (rc)
694 goto err_out;
695 rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME);
696 if (rc)
697 goto err_out;
698 pci_set_master(pdev);
699 ioaddr = pcim_iomap_table(pdev)[1];
700
701 /* Initialize the device structure. */
702 dev->open = tc35815_open;
703 dev->hard_start_xmit = tc35815_send_packet;
704 dev->stop = tc35815_close;
705 dev->get_stats = tc35815_get_stats;
706 dev->set_multicast_list = tc35815_set_multicast_list;
707 dev->do_ioctl = tc35815_ioctl;
708 dev->ethtool_ops = &tc35815_ethtool_ops;
709 dev->tx_timeout = tc35815_tx_timeout;
710 dev->watchdog_timeo = TC35815_TX_TIMEOUT;
711 #ifdef TC35815_NAPI
712 netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT);
713 #endif
714 #ifdef CONFIG_NET_POLL_CONTROLLER
715 dev->poll_controller = tc35815_poll_controller;
716 #endif
717
718 dev->irq = pdev->irq;
719 dev->base_addr = (unsigned long) ioaddr;
720
721 spin_lock_init(&lp->lock);
722 lp->pci_dev = pdev;
723 lp->boardtype = ent->driver_data;
724
725 lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK;
726 pci_set_drvdata(pdev, dev);
727
728 /* Soft reset the chip. */
729 tc35815_chip_reset(dev);
730
731 /* Retrieve the ethernet address. */
732 if (tc35815_init_dev_addr(dev)) {
733 dev_warn(&pdev->dev, "not valid ether addr\n");
734 random_ether_addr(dev->dev_addr);
735 }
736
737 rc = register_netdev (dev);
738 if (rc)
739 goto err_out;
740
741 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
742 printk(KERN_INFO "%s: %s at 0x%lx, %s, IRQ %d\n",
743 dev->name,
744 board_info[ent->driver_data].name,
745 dev->base_addr,
746 print_mac(mac, dev->dev_addr),
747 dev->irq);
748
749 setup_timer(&lp->timer, tc35815_timer, (unsigned long) dev);
750 lp->mii.dev = dev;
751 lp->mii.mdio_read = tc_mdio_read;
752 lp->mii.mdio_write = tc_mdio_write;
753 lp->mii.phy_id_mask = 0x1f;
754 lp->mii.reg_num_mask = 0x1f;
755 tc35815_find_phy(dev);
756 lp->mii.phy_id = lp->phy_addr;
757 lp->mii.full_duplex = 0;
758 lp->mii.force_media = 0;
759
760 return 0;
761
762 err_out:
763 free_netdev (dev);
764 return rc;
765 }
766
767
768 static void __devexit tc35815_remove_one (struct pci_dev *pdev)
769 {
770 struct net_device *dev = pci_get_drvdata (pdev);
771
772 unregister_netdev (dev);
773 free_netdev (dev);
774
775 pci_set_drvdata (pdev, NULL);
776 }
777
778 static int
779 tc35815_init_queues(struct net_device *dev)
780 {
781 struct tc35815_local *lp = netdev_priv(dev);
782 int i;
783 unsigned long fd_addr;
784
785 if (!lp->fd_buf) {
786 BUG_ON(sizeof(struct FDesc) +
787 sizeof(struct BDesc) * RX_BUF_NUM +
788 sizeof(struct FDesc) * RX_FD_NUM +
789 sizeof(struct TxFD) * TX_FD_NUM >
790 PAGE_SIZE * FD_PAGE_NUM);
791
792 if ((lp->fd_buf = pci_alloc_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, &lp->fd_buf_dma)) == 0)
793 return -ENOMEM;
794 for (i = 0; i < RX_BUF_NUM; i++) {
795 #ifdef TC35815_USE_PACKEDBUFFER
796 if ((lp->data_buf[i] = alloc_rxbuf_page(lp->pci_dev, &lp->data_buf_dma[i])) == NULL) {
797 while (--i >= 0) {
798 free_rxbuf_page(lp->pci_dev,
799 lp->data_buf[i],
800 lp->data_buf_dma[i]);
801 lp->data_buf[i] = NULL;
802 }
803 pci_free_consistent(lp->pci_dev,
804 PAGE_SIZE * FD_PAGE_NUM,
805 lp->fd_buf,
806 lp->fd_buf_dma);
807 lp->fd_buf = NULL;
808 return -ENOMEM;
809 }
810 #else
811 lp->rx_skbs[i].skb =
812 alloc_rxbuf_skb(dev, lp->pci_dev,
813 &lp->rx_skbs[i].skb_dma);
814 if (!lp->rx_skbs[i].skb) {
815 while (--i >= 0) {
816 free_rxbuf_skb(lp->pci_dev,
817 lp->rx_skbs[i].skb,
818 lp->rx_skbs[i].skb_dma);
819 lp->rx_skbs[i].skb = NULL;
820 }
821 pci_free_consistent(lp->pci_dev,
822 PAGE_SIZE * FD_PAGE_NUM,
823 lp->fd_buf,
824 lp->fd_buf_dma);
825 lp->fd_buf = NULL;
826 return -ENOMEM;
827 }
828 #endif
829 }
830 printk(KERN_DEBUG "%s: FD buf %p DataBuf",
831 dev->name, lp->fd_buf);
832 #ifdef TC35815_USE_PACKEDBUFFER
833 printk(" DataBuf");
834 for (i = 0; i < RX_BUF_NUM; i++)
835 printk(" %p", lp->data_buf[i]);
836 #endif
837 printk("\n");
838 } else {
839 for (i = 0; i < FD_PAGE_NUM; i++) {
840 clear_page((void *)((unsigned long)lp->fd_buf + i * PAGE_SIZE));
841 }
842 }
843 fd_addr = (unsigned long)lp->fd_buf;
844
845 /* Free Descriptors (for Receive) */
846 lp->rfd_base = (struct RxFD *)fd_addr;
847 fd_addr += sizeof(struct RxFD) * RX_FD_NUM;
848 for (i = 0; i < RX_FD_NUM; i++) {
849 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD);
850 }
851 lp->rfd_cur = lp->rfd_base;
852 lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1);
853
854 /* Transmit Descriptors */
855 lp->tfd_base = (struct TxFD *)fd_addr;
856 fd_addr += sizeof(struct TxFD) * TX_FD_NUM;
857 for (i = 0; i < TX_FD_NUM; i++) {
858 lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1]));
859 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
860 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0);
861 }
862 lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0]));
863 lp->tfd_start = 0;
864 lp->tfd_end = 0;
865
866 /* Buffer List (for Receive) */
867 lp->fbl_ptr = (struct FrFD *)fd_addr;
868 lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr));
869 lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD);
870 #ifndef TC35815_USE_PACKEDBUFFER
871 /*
872 * move all allocated skbs to head of rx_skbs[] array.
873 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
874 * tc35815_rx() had failed.
875 */
876 lp->fbl_count = 0;
877 for (i = 0; i < RX_BUF_NUM; i++) {
878 if (lp->rx_skbs[i].skb) {
879 if (i != lp->fbl_count) {
880 lp->rx_skbs[lp->fbl_count].skb =
881 lp->rx_skbs[i].skb;
882 lp->rx_skbs[lp->fbl_count].skb_dma =
883 lp->rx_skbs[i].skb_dma;
884 }
885 lp->fbl_count++;
886 }
887 }
888 #endif
889 for (i = 0; i < RX_BUF_NUM; i++) {
890 #ifdef TC35815_USE_PACKEDBUFFER
891 lp->fbl_ptr->bd[i].BuffData = cpu_to_le32(lp->data_buf_dma[i]);
892 #else
893 if (i >= lp->fbl_count) {
894 lp->fbl_ptr->bd[i].BuffData = 0;
895 lp->fbl_ptr->bd[i].BDCtl = 0;
896 continue;
897 }
898 lp->fbl_ptr->bd[i].BuffData =
899 cpu_to_le32(lp->rx_skbs[i].skb_dma);
900 #endif
901 /* BDID is index of FrFD.bd[] */
902 lp->fbl_ptr->bd[i].BDCtl =
903 cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) |
904 RX_BUF_SIZE);
905 }
906 #ifdef TC35815_USE_PACKEDBUFFER
907 lp->fbl_curid = 0;
908 #endif
909
910 printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n",
911 dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr);
912 return 0;
913 }
914
915 static void
916 tc35815_clear_queues(struct net_device *dev)
917 {
918 struct tc35815_local *lp = netdev_priv(dev);
919 int i;
920
921 for (i = 0; i < TX_FD_NUM; i++) {
922 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
923 struct sk_buff *skb =
924 fdsystem != 0xffffffff ?
925 lp->tx_skbs[fdsystem].skb : NULL;
926 #ifdef DEBUG
927 if (lp->tx_skbs[i].skb != skb) {
928 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
929 panic_queues(dev);
930 }
931 #else
932 BUG_ON(lp->tx_skbs[i].skb != skb);
933 #endif
934 if (skb) {
935 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
936 lp->tx_skbs[i].skb = NULL;
937 lp->tx_skbs[i].skb_dma = 0;
938 dev_kfree_skb_any(skb);
939 }
940 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
941 }
942
943 tc35815_init_queues(dev);
944 }
945
946 static void
947 tc35815_free_queues(struct net_device *dev)
948 {
949 struct tc35815_local *lp = netdev_priv(dev);
950 int i;
951
952 if (lp->tfd_base) {
953 for (i = 0; i < TX_FD_NUM; i++) {
954 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
955 struct sk_buff *skb =
956 fdsystem != 0xffffffff ?
957 lp->tx_skbs[fdsystem].skb : NULL;
958 #ifdef DEBUG
959 if (lp->tx_skbs[i].skb != skb) {
960 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
961 panic_queues(dev);
962 }
963 #else
964 BUG_ON(lp->tx_skbs[i].skb != skb);
965 #endif
966 if (skb) {
967 dev_kfree_skb(skb);
968 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
969 lp->tx_skbs[i].skb = NULL;
970 lp->tx_skbs[i].skb_dma = 0;
971 }
972 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
973 }
974 }
975
976 lp->rfd_base = NULL;
977 lp->rfd_limit = NULL;
978 lp->rfd_cur = NULL;
979 lp->fbl_ptr = NULL;
980
981 for (i = 0; i < RX_BUF_NUM; i++) {
982 #ifdef TC35815_USE_PACKEDBUFFER
983 if (lp->data_buf[i]) {
984 free_rxbuf_page(lp->pci_dev,
985 lp->data_buf[i], lp->data_buf_dma[i]);
986 lp->data_buf[i] = NULL;
987 }
988 #else
989 if (lp->rx_skbs[i].skb) {
990 free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb,
991 lp->rx_skbs[i].skb_dma);
992 lp->rx_skbs[i].skb = NULL;
993 }
994 #endif
995 }
996 if (lp->fd_buf) {
997 pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM,
998 lp->fd_buf, lp->fd_buf_dma);
999 lp->fd_buf = NULL;
1000 }
1001 }
1002
1003 static void
1004 dump_txfd(struct TxFD *fd)
1005 {
1006 printk("TxFD(%p): %08x %08x %08x %08x\n", fd,
1007 le32_to_cpu(fd->fd.FDNext),
1008 le32_to_cpu(fd->fd.FDSystem),
1009 le32_to_cpu(fd->fd.FDStat),
1010 le32_to_cpu(fd->fd.FDCtl));
1011 printk("BD: ");
1012 printk(" %08x %08x",
1013 le32_to_cpu(fd->bd.BuffData),
1014 le32_to_cpu(fd->bd.BDCtl));
1015 printk("\n");
1016 }
1017
1018 static int
1019 dump_rxfd(struct RxFD *fd)
1020 {
1021 int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1022 if (bd_count > 8)
1023 bd_count = 8;
1024 printk("RxFD(%p): %08x %08x %08x %08x\n", fd,
1025 le32_to_cpu(fd->fd.FDNext),
1026 le32_to_cpu(fd->fd.FDSystem),
1027 le32_to_cpu(fd->fd.FDStat),
1028 le32_to_cpu(fd->fd.FDCtl));
1029 if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD)
1030 return 0;
1031 printk("BD: ");
1032 for (i = 0; i < bd_count; i++)
1033 printk(" %08x %08x",
1034 le32_to_cpu(fd->bd[i].BuffData),
1035 le32_to_cpu(fd->bd[i].BDCtl));
1036 printk("\n");
1037 return bd_count;
1038 }
1039
1040 #if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER)
1041 static void
1042 dump_frfd(struct FrFD *fd)
1043 {
1044 int i;
1045 printk("FrFD(%p): %08x %08x %08x %08x\n", fd,
1046 le32_to_cpu(fd->fd.FDNext),
1047 le32_to_cpu(fd->fd.FDSystem),
1048 le32_to_cpu(fd->fd.FDStat),
1049 le32_to_cpu(fd->fd.FDCtl));
1050 printk("BD: ");
1051 for (i = 0; i < RX_BUF_NUM; i++)
1052 printk(" %08x %08x",
1053 le32_to_cpu(fd->bd[i].BuffData),
1054 le32_to_cpu(fd->bd[i].BDCtl));
1055 printk("\n");
1056 }
1057 #endif
1058
1059 #ifdef DEBUG
1060 static void
1061 panic_queues(struct net_device *dev)
1062 {
1063 struct tc35815_local *lp = netdev_priv(dev);
1064 int i;
1065
1066 printk("TxFD base %p, start %u, end %u\n",
1067 lp->tfd_base, lp->tfd_start, lp->tfd_end);
1068 printk("RxFD base %p limit %p cur %p\n",
1069 lp->rfd_base, lp->rfd_limit, lp->rfd_cur);
1070 printk("FrFD %p\n", lp->fbl_ptr);
1071 for (i = 0; i < TX_FD_NUM; i++)
1072 dump_txfd(&lp->tfd_base[i]);
1073 for (i = 0; i < RX_FD_NUM; i++) {
1074 int bd_count = dump_rxfd(&lp->rfd_base[i]);
1075 i += (bd_count + 1) / 2; /* skip BDs */
1076 }
1077 dump_frfd(lp->fbl_ptr);
1078 panic("%s: Illegal queue state.", dev->name);
1079 }
1080 #endif
1081
1082 static void print_eth(const u8 *add)
1083 {
1084 DECLARE_MAC_BUF(mac);
1085
1086 printk(KERN_DEBUG "print_eth(%p)\n", add);
1087 printk(KERN_DEBUG " %s =>", print_mac(mac, add + 6));
1088 printk(KERN_CONT " %s : %02x%02x\n",
1089 print_mac(mac, add), add[12], add[13]);
1090 }
1091
1092 static int tc35815_tx_full(struct net_device *dev)
1093 {
1094 struct tc35815_local *lp = netdev_priv(dev);
1095 return ((lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end);
1096 }
1097
1098 static void tc35815_restart(struct net_device *dev)
1099 {
1100 struct tc35815_local *lp = netdev_priv(dev);
1101 int pid = lp->phy_addr;
1102 int do_phy_reset = 1;
1103 del_timer(&lp->timer); /* Kill if running */
1104
1105 if (lp->mii_id[0] == 0x0016 && (lp->mii_id[1] & 0xfc00) == 0xf800) {
1106 /* Resetting PHY cause problem on some chip... (SEEQ 80221) */
1107 do_phy_reset = 0;
1108 }
1109 if (do_phy_reset) {
1110 int timeout;
1111 tc_mdio_write(dev, pid, MII_BMCR, BMCR_RESET);
1112 timeout = 100;
1113 while (--timeout) {
1114 if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_RESET))
1115 break;
1116 udelay(1);
1117 }
1118 if (!timeout)
1119 printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name);
1120 }
1121
1122 tc35815_chip_reset(dev);
1123 tc35815_clear_queues(dev);
1124 tc35815_chip_init(dev);
1125 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1126 tc35815_set_multicast_list(dev);
1127 }
1128
1129 static void tc35815_tx_timeout(struct net_device *dev)
1130 {
1131 struct tc35815_local *lp = netdev_priv(dev);
1132 struct tc35815_regs __iomem *tr =
1133 (struct tc35815_regs __iomem *)dev->base_addr;
1134
1135 printk(KERN_WARNING "%s: transmit timed out, status %#x\n",
1136 dev->name, tc_readl(&tr->Tx_Stat));
1137
1138 /* Try to restart the adaptor. */
1139 spin_lock_irq(&lp->lock);
1140 tc35815_restart(dev);
1141 spin_unlock_irq(&lp->lock);
1142
1143 dev->stats.tx_errors++;
1144
1145 /* If we have space available to accept new transmit
1146 * requests, wake up the queueing layer. This would
1147 * be the case if the chipset_init() call above just
1148 * flushes out the tx queue and empties it.
1149 *
1150 * If instead, the tx queue is retained then the
1151 * netif_wake_queue() call should be placed in the
1152 * TX completion interrupt handler of the driver instead
1153 * of here.
1154 */
1155 if (!tc35815_tx_full(dev))
1156 netif_wake_queue(dev);
1157 }
1158
1159 /*
1160 * Open/initialize the board. This is called (in the current kernel)
1161 * sometime after booting when the 'ifconfig' program is run.
1162 *
1163 * This routine should set everything up anew at each open, even
1164 * registers that "should" only need to be set once at boot, so that
1165 * there is non-reboot way to recover if something goes wrong.
1166 */
1167 static int
1168 tc35815_open(struct net_device *dev)
1169 {
1170 struct tc35815_local *lp = netdev_priv(dev);
1171
1172 /*
1173 * This is used if the interrupt line can turned off (shared).
1174 * See 3c503.c for an example of selecting the IRQ at config-time.
1175 */
1176 if (request_irq(dev->irq, &tc35815_interrupt, IRQF_SHARED, dev->name, dev)) {
1177 return -EAGAIN;
1178 }
1179
1180 del_timer(&lp->timer); /* Kill if running */
1181 tc35815_chip_reset(dev);
1182
1183 if (tc35815_init_queues(dev) != 0) {
1184 free_irq(dev->irq, dev);
1185 return -EAGAIN;
1186 }
1187
1188 #ifdef TC35815_NAPI
1189 napi_enable(&lp->napi);
1190 #endif
1191
1192 /* Reset the hardware here. Don't forget to set the station address. */
1193 spin_lock_irq(&lp->lock);
1194 tc35815_chip_init(dev);
1195 spin_unlock_irq(&lp->lock);
1196
1197 /* We are now ready to accept transmit requeusts from
1198 * the queueing layer of the networking.
1199 */
1200 netif_start_queue(dev);
1201
1202 return 0;
1203 }
1204
1205 /* This will only be invoked if your driver is _not_ in XOFF state.
1206 * What this means is that you need not check it, and that this
1207 * invariant will hold if you make sure that the netif_*_queue()
1208 * calls are done at the proper times.
1209 */
1210 static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
1211 {
1212 struct tc35815_local *lp = netdev_priv(dev);
1213 struct TxFD *txfd;
1214 unsigned long flags;
1215
1216 /* If some error occurs while trying to transmit this
1217 * packet, you should return '1' from this function.
1218 * In such a case you _may not_ do anything to the
1219 * SKB, it is still owned by the network queueing
1220 * layer when an error is returned. This means you
1221 * may not modify any SKB fields, you may not free
1222 * the SKB, etc.
1223 */
1224
1225 /* This is the most common case for modern hardware.
1226 * The spinlock protects this code from the TX complete
1227 * hardware interrupt handler. Queue flow control is
1228 * thus managed under this lock as well.
1229 */
1230 spin_lock_irqsave(&lp->lock, flags);
1231
1232 /* failsafe... (handle txdone now if half of FDs are used) */
1233 if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM >
1234 TX_FD_NUM / 2)
1235 tc35815_txdone(dev);
1236
1237 if (netif_msg_pktdata(lp))
1238 print_eth(skb->data);
1239 #ifdef DEBUG
1240 if (lp->tx_skbs[lp->tfd_start].skb) {
1241 printk("%s: tx_skbs conflict.\n", dev->name);
1242 panic_queues(dev);
1243 }
1244 #else
1245 BUG_ON(lp->tx_skbs[lp->tfd_start].skb);
1246 #endif
1247 lp->tx_skbs[lp->tfd_start].skb = skb;
1248 lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1249
1250 /*add to ring */
1251 txfd = &lp->tfd_base[lp->tfd_start];
1252 txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma);
1253 txfd->bd.BDCtl = cpu_to_le32(skb->len);
1254 txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start);
1255 txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT));
1256
1257 if (lp->tfd_start == lp->tfd_end) {
1258 struct tc35815_regs __iomem *tr =
1259 (struct tc35815_regs __iomem *)dev->base_addr;
1260 /* Start DMA Transmitter. */
1261 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1262 #ifdef GATHER_TXINT
1263 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1264 #endif
1265 if (netif_msg_tx_queued(lp)) {
1266 printk("%s: starting TxFD.\n", dev->name);
1267 dump_txfd(txfd);
1268 }
1269 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1270 } else {
1271 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL);
1272 if (netif_msg_tx_queued(lp)) {
1273 printk("%s: queueing TxFD.\n", dev->name);
1274 dump_txfd(txfd);
1275 }
1276 }
1277 lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
1278
1279 dev->trans_start = jiffies;
1280
1281 /* If we just used up the very last entry in the
1282 * TX ring on this device, tell the queueing
1283 * layer to send no more.
1284 */
1285 if (tc35815_tx_full(dev)) {
1286 if (netif_msg_tx_queued(lp))
1287 printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name);
1288 netif_stop_queue(dev);
1289 }
1290
1291 /* When the TX completion hw interrupt arrives, this
1292 * is when the transmit statistics are updated.
1293 */
1294
1295 spin_unlock_irqrestore(&lp->lock, flags);
1296 return 0;
1297 }
1298
1299 #define FATAL_ERROR_INT \
1300 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
1301 static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status)
1302 {
1303 static int count;
1304 printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):",
1305 dev->name, status);
1306 if (status & Int_IntPCI)
1307 printk(" IntPCI");
1308 if (status & Int_DmParErr)
1309 printk(" DmParErr");
1310 if (status & Int_IntNRAbt)
1311 printk(" IntNRAbt");
1312 printk("\n");
1313 if (count++ > 100)
1314 panic("%s: Too many fatal errors.", dev->name);
1315 printk(KERN_WARNING "%s: Resetting ...\n", dev->name);
1316 /* Try to restart the adaptor. */
1317 tc35815_restart(dev);
1318 }
1319
1320 #ifdef TC35815_NAPI
1321 static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit)
1322 #else
1323 static int tc35815_do_interrupt(struct net_device *dev, u32 status)
1324 #endif
1325 {
1326 struct tc35815_local *lp = netdev_priv(dev);
1327 struct tc35815_regs __iomem *tr =
1328 (struct tc35815_regs __iomem *)dev->base_addr;
1329 int ret = -1;
1330
1331 /* Fatal errors... */
1332 if (status & FATAL_ERROR_INT) {
1333 tc35815_fatal_error_interrupt(dev, status);
1334 return 0;
1335 }
1336 /* recoverable errors */
1337 if (status & Int_IntFDAEx) {
1338 /* disable FDAEx int. (until we make rooms...) */
1339 tc_writel(tc_readl(&tr->Int_En) & ~Int_FDAExEn, &tr->Int_En);
1340 printk(KERN_WARNING
1341 "%s: Free Descriptor Area Exhausted (%#x).\n",
1342 dev->name, status);
1343 dev->stats.rx_dropped++;
1344 ret = 0;
1345 }
1346 if (status & Int_IntBLEx) {
1347 /* disable BLEx int. (until we make rooms...) */
1348 tc_writel(tc_readl(&tr->Int_En) & ~Int_BLExEn, &tr->Int_En);
1349 printk(KERN_WARNING
1350 "%s: Buffer List Exhausted (%#x).\n",
1351 dev->name, status);
1352 dev->stats.rx_dropped++;
1353 ret = 0;
1354 }
1355 if (status & Int_IntExBD) {
1356 printk(KERN_WARNING
1357 "%s: Excessive Buffer Descriptiors (%#x).\n",
1358 dev->name, status);
1359 dev->stats.rx_length_errors++;
1360 ret = 0;
1361 }
1362
1363 /* normal notification */
1364 if (status & Int_IntMacRx) {
1365 /* Got a packet(s). */
1366 #ifdef TC35815_NAPI
1367 ret = tc35815_rx(dev, limit);
1368 #else
1369 tc35815_rx(dev);
1370 ret = 0;
1371 #endif
1372 lp->lstats.rx_ints++;
1373 }
1374 if (status & Int_IntMacTx) {
1375 /* Transmit complete. */
1376 lp->lstats.tx_ints++;
1377 tc35815_txdone(dev);
1378 netif_wake_queue(dev);
1379 ret = 0;
1380 }
1381 return ret;
1382 }
1383
1384 /*
1385 * The typical workload of the driver:
1386 * Handle the network interface interrupts.
1387 */
1388 static irqreturn_t tc35815_interrupt(int irq, void *dev_id)
1389 {
1390 struct net_device *dev = dev_id;
1391 struct tc35815_local *lp = netdev_priv(dev);
1392 struct tc35815_regs __iomem *tr =
1393 (struct tc35815_regs __iomem *)dev->base_addr;
1394 #ifdef TC35815_NAPI
1395 u32 dmactl = tc_readl(&tr->DMA_Ctl);
1396
1397 if (!(dmactl & DMA_IntMask)) {
1398 /* disable interrupts */
1399 tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl);
1400 if (netif_rx_schedule_prep(dev, &lp->napi))
1401 __netif_rx_schedule(dev, &lp->napi);
1402 else {
1403 printk(KERN_ERR "%s: interrupt taken in poll\n",
1404 dev->name);
1405 BUG();
1406 }
1407 (void)tc_readl(&tr->Int_Src); /* flush */
1408 return IRQ_HANDLED;
1409 }
1410 return IRQ_NONE;
1411 #else
1412 int handled;
1413 u32 status;
1414
1415 spin_lock(&lp->lock);
1416 status = tc_readl(&tr->Int_Src);
1417 tc_writel(status, &tr->Int_Src); /* write to clear */
1418 handled = tc35815_do_interrupt(dev, status);
1419 (void)tc_readl(&tr->Int_Src); /* flush */
1420 spin_unlock(&lp->lock);
1421 return IRQ_RETVAL(handled >= 0);
1422 #endif /* TC35815_NAPI */
1423 }
1424
1425 #ifdef CONFIG_NET_POLL_CONTROLLER
1426 static void tc35815_poll_controller(struct net_device *dev)
1427 {
1428 disable_irq(dev->irq);
1429 tc35815_interrupt(dev->irq, dev);
1430 enable_irq(dev->irq);
1431 }
1432 #endif
1433
1434 /* We have a good packet(s), get it/them out of the buffers. */
1435 #ifdef TC35815_NAPI
1436 static int
1437 tc35815_rx(struct net_device *dev, int limit)
1438 #else
1439 static void
1440 tc35815_rx(struct net_device *dev)
1441 #endif
1442 {
1443 struct tc35815_local *lp = netdev_priv(dev);
1444 unsigned int fdctl;
1445 int i;
1446 int buf_free_count = 0;
1447 int fd_free_count = 0;
1448 #ifdef TC35815_NAPI
1449 int received = 0;
1450 #endif
1451
1452 while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) {
1453 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat);
1454 int pkt_len = fdctl & FD_FDLength_MASK;
1455 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1456 #ifdef DEBUG
1457 struct RxFD *next_rfd;
1458 #endif
1459 #if (RX_CTL_CMD & Rx_StripCRC) == 0
1460 pkt_len -= 4;
1461 #endif
1462
1463 if (netif_msg_rx_status(lp))
1464 dump_rxfd(lp->rfd_cur);
1465 if (status & Rx_Good) {
1466 struct sk_buff *skb;
1467 unsigned char *data;
1468 int cur_bd;
1469 #ifdef TC35815_USE_PACKEDBUFFER
1470 int offset;
1471 #endif
1472
1473 #ifdef TC35815_NAPI
1474 if (--limit < 0)
1475 break;
1476 #endif
1477 #ifdef TC35815_USE_PACKEDBUFFER
1478 BUG_ON(bd_count > 2);
1479 skb = dev_alloc_skb(pkt_len + 2); /* +2: for reserve */
1480 if (skb == NULL) {
1481 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
1482 dev->name);
1483 dev->stats.rx_dropped++;
1484 break;
1485 }
1486 skb_reserve(skb, 2); /* 16 bit alignment */
1487
1488 data = skb_put(skb, pkt_len);
1489
1490 /* copy from receive buffer */
1491 cur_bd = 0;
1492 offset = 0;
1493 while (offset < pkt_len && cur_bd < bd_count) {
1494 int len = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BDCtl) &
1495 BD_BuffLength_MASK;
1496 dma_addr_t dma = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BuffData);
1497 void *rxbuf = rxbuf_bus_to_virt(lp, dma);
1498 if (offset + len > pkt_len)
1499 len = pkt_len - offset;
1500 #ifdef TC35815_DMA_SYNC_ONDEMAND
1501 pci_dma_sync_single_for_cpu(lp->pci_dev,
1502 dma, len,
1503 PCI_DMA_FROMDEVICE);
1504 #endif
1505 memcpy(data + offset, rxbuf, len);
1506 #ifdef TC35815_DMA_SYNC_ONDEMAND
1507 pci_dma_sync_single_for_device(lp->pci_dev,
1508 dma, len,
1509 PCI_DMA_FROMDEVICE);
1510 #endif
1511 offset += len;
1512 cur_bd++;
1513 }
1514 #else /* TC35815_USE_PACKEDBUFFER */
1515 BUG_ON(bd_count > 1);
1516 cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl)
1517 & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1518 #ifdef DEBUG
1519 if (cur_bd >= RX_BUF_NUM) {
1520 printk("%s: invalid BDID.\n", dev->name);
1521 panic_queues(dev);
1522 }
1523 BUG_ON(lp->rx_skbs[cur_bd].skb_dma !=
1524 (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3));
1525 if (!lp->rx_skbs[cur_bd].skb) {
1526 printk("%s: NULL skb.\n", dev->name);
1527 panic_queues(dev);
1528 }
1529 #else
1530 BUG_ON(cur_bd >= RX_BUF_NUM);
1531 #endif
1532 skb = lp->rx_skbs[cur_bd].skb;
1533 prefetch(skb->data);
1534 lp->rx_skbs[cur_bd].skb = NULL;
1535 lp->fbl_count--;
1536 pci_unmap_single(lp->pci_dev,
1537 lp->rx_skbs[cur_bd].skb_dma,
1538 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1539 if (!HAVE_DMA_RXALIGN(lp))
1540 memmove(skb->data, skb->data - 2, pkt_len);
1541 data = skb_put(skb, pkt_len);
1542 #endif /* TC35815_USE_PACKEDBUFFER */
1543 if (netif_msg_pktdata(lp))
1544 print_eth(data);
1545 skb->protocol = eth_type_trans(skb, dev);
1546 #ifdef TC35815_NAPI
1547 netif_receive_skb(skb);
1548 received++;
1549 #else
1550 netif_rx(skb);
1551 #endif
1552 dev->last_rx = jiffies;
1553 dev->stats.rx_packets++;
1554 dev->stats.rx_bytes += pkt_len;
1555 } else {
1556 dev->stats.rx_errors++;
1557 printk(KERN_DEBUG "%s: Rx error (status %x)\n",
1558 dev->name, status & Rx_Stat_Mask);
1559 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1560 if ((status & Rx_LongErr) && (status & Rx_CRCErr)) {
1561 status &= ~(Rx_LongErr|Rx_CRCErr);
1562 status |= Rx_Over;
1563 }
1564 if (status & Rx_LongErr)
1565 dev->stats.rx_length_errors++;
1566 if (status & Rx_Over)
1567 dev->stats.rx_fifo_errors++;
1568 if (status & Rx_CRCErr)
1569 dev->stats.rx_crc_errors++;
1570 if (status & Rx_Align)
1571 dev->stats.rx_frame_errors++;
1572 }
1573
1574 if (bd_count > 0) {
1575 /* put Free Buffer back to controller */
1576 int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl);
1577 unsigned char id =
1578 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1579 #ifdef DEBUG
1580 if (id >= RX_BUF_NUM) {
1581 printk("%s: invalid BDID.\n", dev->name);
1582 panic_queues(dev);
1583 }
1584 #else
1585 BUG_ON(id >= RX_BUF_NUM);
1586 #endif
1587 /* free old buffers */
1588 #ifdef TC35815_USE_PACKEDBUFFER
1589 while (lp->fbl_curid != id)
1590 #else
1591 while (lp->fbl_count < RX_BUF_NUM)
1592 #endif
1593 {
1594 #ifdef TC35815_USE_PACKEDBUFFER
1595 unsigned char curid = lp->fbl_curid;
1596 #else
1597 unsigned char curid =
1598 (id + 1 + lp->fbl_count) % RX_BUF_NUM;
1599 #endif
1600 struct BDesc *bd = &lp->fbl_ptr->bd[curid];
1601 #ifdef DEBUG
1602 bdctl = le32_to_cpu(bd->BDCtl);
1603 if (bdctl & BD_CownsBD) {
1604 printk("%s: Freeing invalid BD.\n",
1605 dev->name);
1606 panic_queues(dev);
1607 }
1608 #endif
1609 /* pass BD to controller */
1610 #ifndef TC35815_USE_PACKEDBUFFER
1611 if (!lp->rx_skbs[curid].skb) {
1612 lp->rx_skbs[curid].skb =
1613 alloc_rxbuf_skb(dev,
1614 lp->pci_dev,
1615 &lp->rx_skbs[curid].skb_dma);
1616 if (!lp->rx_skbs[curid].skb)
1617 break; /* try on next reception */
1618 bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma);
1619 }
1620 #endif /* TC35815_USE_PACKEDBUFFER */
1621 /* Note: BDLength was modified by chip. */
1622 bd->BDCtl = cpu_to_le32(BD_CownsBD |
1623 (curid << BD_RxBDID_SHIFT) |
1624 RX_BUF_SIZE);
1625 #ifdef TC35815_USE_PACKEDBUFFER
1626 lp->fbl_curid = (curid + 1) % RX_BUF_NUM;
1627 if (netif_msg_rx_status(lp)) {
1628 printk("%s: Entering new FBD %d\n",
1629 dev->name, lp->fbl_curid);
1630 dump_frfd(lp->fbl_ptr);
1631 }
1632 #else
1633 lp->fbl_count++;
1634 #endif
1635 buf_free_count++;
1636 }
1637 }
1638
1639 /* put RxFD back to controller */
1640 #ifdef DEBUG
1641 next_rfd = fd_bus_to_virt(lp,
1642 le32_to_cpu(lp->rfd_cur->fd.FDNext));
1643 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) {
1644 printk("%s: RxFD FDNext invalid.\n", dev->name);
1645 panic_queues(dev);
1646 }
1647 #endif
1648 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) {
1649 /* pass FD to controller */
1650 #ifdef DEBUG
1651 lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead);
1652 #else
1653 lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL);
1654 #endif
1655 lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD);
1656 lp->rfd_cur++;
1657 fd_free_count++;
1658 }
1659 if (lp->rfd_cur > lp->rfd_limit)
1660 lp->rfd_cur = lp->rfd_base;
1661 #ifdef DEBUG
1662 if (lp->rfd_cur != next_rfd)
1663 printk("rfd_cur = %p, next_rfd %p\n",
1664 lp->rfd_cur, next_rfd);
1665 #endif
1666 }
1667
1668 /* re-enable BL/FDA Exhaust interrupts. */
1669 if (fd_free_count) {
1670 struct tc35815_regs __iomem *tr =
1671 (struct tc35815_regs __iomem *)dev->base_addr;
1672 u32 en, en_old = tc_readl(&tr->Int_En);
1673 en = en_old | Int_FDAExEn;
1674 if (buf_free_count)
1675 en |= Int_BLExEn;
1676 if (en != en_old)
1677 tc_writel(en, &tr->Int_En);
1678 }
1679 #ifdef TC35815_NAPI
1680 return received;
1681 #endif
1682 }
1683
1684 #ifdef TC35815_NAPI
1685 static int tc35815_poll(struct napi_struct *napi, int budget)
1686 {
1687 struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi);
1688 struct net_device *dev = lp->dev;
1689 struct tc35815_regs __iomem *tr =
1690 (struct tc35815_regs __iomem *)dev->base_addr;
1691 int received = 0, handled;
1692 u32 status;
1693
1694 spin_lock(&lp->lock);
1695 status = tc_readl(&tr->Int_Src);
1696 do {
1697 tc_writel(status, &tr->Int_Src); /* write to clear */
1698
1699 handled = tc35815_do_interrupt(dev, status, limit);
1700 if (handled >= 0) {
1701 received += handled;
1702 if (received >= budget)
1703 break;
1704 }
1705 status = tc_readl(&tr->Int_Src);
1706 } while (status);
1707 spin_unlock(&lp->lock);
1708
1709 if (received < budget) {
1710 netif_rx_complete(dev, napi);
1711 /* enable interrupts */
1712 tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl);
1713 }
1714 return received;
1715 }
1716 #endif
1717
1718 #ifdef NO_CHECK_CARRIER
1719 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1720 #else
1721 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1722 #endif
1723
1724 static void
1725 tc35815_check_tx_stat(struct net_device *dev, int status)
1726 {
1727 struct tc35815_local *lp = netdev_priv(dev);
1728 const char *msg = NULL;
1729
1730 /* count collisions */
1731 if (status & Tx_ExColl)
1732 dev->stats.collisions += 16;
1733 if (status & Tx_TxColl_MASK)
1734 dev->stats.collisions += status & Tx_TxColl_MASK;
1735
1736 #ifndef NO_CHECK_CARRIER
1737 /* TX4939 does not have NCarr */
1738 if (lp->boardtype == TC35815_TX4939)
1739 status &= ~Tx_NCarr;
1740 #ifdef WORKAROUND_LOSTCAR
1741 /* WORKAROUND: ignore LostCrS in full duplex operation */
1742 if ((lp->timer_state != asleep && lp->timer_state != lcheck)
1743 || lp->fullduplex)
1744 status &= ~Tx_NCarr;
1745 #endif
1746 #endif
1747
1748 if (!(status & TX_STA_ERR)) {
1749 /* no error. */
1750 dev->stats.tx_packets++;
1751 return;
1752 }
1753
1754 dev->stats.tx_errors++;
1755 if (status & Tx_ExColl) {
1756 dev->stats.tx_aborted_errors++;
1757 msg = "Excessive Collision.";
1758 }
1759 if (status & Tx_Under) {
1760 dev->stats.tx_fifo_errors++;
1761 msg = "Tx FIFO Underrun.";
1762 if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) {
1763 lp->lstats.tx_underrun++;
1764 if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) {
1765 struct tc35815_regs __iomem *tr =
1766 (struct tc35815_regs __iomem *)dev->base_addr;
1767 tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh);
1768 msg = "Tx FIFO Underrun.Change Tx threshold to max.";
1769 }
1770 }
1771 }
1772 if (status & Tx_Defer) {
1773 dev->stats.tx_fifo_errors++;
1774 msg = "Excessive Deferral.";
1775 }
1776 #ifndef NO_CHECK_CARRIER
1777 if (status & Tx_NCarr) {
1778 dev->stats.tx_carrier_errors++;
1779 msg = "Lost Carrier Sense.";
1780 }
1781 #endif
1782 if (status & Tx_LateColl) {
1783 dev->stats.tx_aborted_errors++;
1784 msg = "Late Collision.";
1785 }
1786 if (status & Tx_TxPar) {
1787 dev->stats.tx_fifo_errors++;
1788 msg = "Transmit Parity Error.";
1789 }
1790 if (status & Tx_SQErr) {
1791 dev->stats.tx_heartbeat_errors++;
1792 msg = "Signal Quality Error.";
1793 }
1794 if (msg && netif_msg_tx_err(lp))
1795 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status);
1796 }
1797
1798 /* This handles TX complete events posted by the device
1799 * via interrupts.
1800 */
1801 static void
1802 tc35815_txdone(struct net_device *dev)
1803 {
1804 struct tc35815_local *lp = netdev_priv(dev);
1805 struct TxFD *txfd;
1806 unsigned int fdctl;
1807
1808 txfd = &lp->tfd_base[lp->tfd_end];
1809 while (lp->tfd_start != lp->tfd_end &&
1810 !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) {
1811 int status = le32_to_cpu(txfd->fd.FDStat);
1812 struct sk_buff *skb;
1813 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext);
1814 u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem);
1815
1816 if (netif_msg_tx_done(lp)) {
1817 printk("%s: complete TxFD.\n", dev->name);
1818 dump_txfd(txfd);
1819 }
1820 tc35815_check_tx_stat(dev, status);
1821
1822 skb = fdsystem != 0xffffffff ?
1823 lp->tx_skbs[fdsystem].skb : NULL;
1824 #ifdef DEBUG
1825 if (lp->tx_skbs[lp->tfd_end].skb != skb) {
1826 printk("%s: tx_skbs mismatch.\n", dev->name);
1827 panic_queues(dev);
1828 }
1829 #else
1830 BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb);
1831 #endif
1832 if (skb) {
1833 dev->stats.tx_bytes += skb->len;
1834 pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE);
1835 lp->tx_skbs[lp->tfd_end].skb = NULL;
1836 lp->tx_skbs[lp->tfd_end].skb_dma = 0;
1837 #ifdef TC35815_NAPI
1838 dev_kfree_skb_any(skb);
1839 #else
1840 dev_kfree_skb_irq(skb);
1841 #endif
1842 }
1843 txfd->fd.FDSystem = cpu_to_le32(0xffffffff);
1844
1845 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM;
1846 txfd = &lp->tfd_base[lp->tfd_end];
1847 #ifdef DEBUG
1848 if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) {
1849 printk("%s: TxFD FDNext invalid.\n", dev->name);
1850 panic_queues(dev);
1851 }
1852 #endif
1853 if (fdnext & FD_Next_EOL) {
1854 /* DMA Transmitter has been stopping... */
1855 if (lp->tfd_end != lp->tfd_start) {
1856 struct tc35815_regs __iomem *tr =
1857 (struct tc35815_regs __iomem *)dev->base_addr;
1858 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM;
1859 struct TxFD* txhead = &lp->tfd_base[head];
1860 int qlen = (lp->tfd_start + TX_FD_NUM
1861 - lp->tfd_end) % TX_FD_NUM;
1862
1863 #ifdef DEBUG
1864 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) {
1865 printk("%s: TxFD FDCtl invalid.\n", dev->name);
1866 panic_queues(dev);
1867 }
1868 #endif
1869 /* log max queue length */
1870 if (lp->lstats.max_tx_qlen < qlen)
1871 lp->lstats.max_tx_qlen = qlen;
1872
1873
1874 /* start DMA Transmitter again */
1875 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1876 #ifdef GATHER_TXINT
1877 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1878 #endif
1879 if (netif_msg_tx_queued(lp)) {
1880 printk("%s: start TxFD on queue.\n",
1881 dev->name);
1882 dump_txfd(txfd);
1883 }
1884 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1885 }
1886 break;
1887 }
1888 }
1889
1890 /* If we had stopped the queue due to a "tx full"
1891 * condition, and space has now been made available,
1892 * wake up the queue.
1893 */
1894 if (netif_queue_stopped(dev) && ! tc35815_tx_full(dev))
1895 netif_wake_queue(dev);
1896 }
1897
1898 /* The inverse routine to tc35815_open(). */
1899 static int
1900 tc35815_close(struct net_device *dev)
1901 {
1902 struct tc35815_local *lp = netdev_priv(dev);
1903
1904 netif_stop_queue(dev);
1905 #ifdef TC35815_NAPI
1906 napi_disable(&lp->napi);
1907 #endif
1908
1909 /* Flush the Tx and disable Rx here. */
1910
1911 del_timer(&lp->timer); /* Kill if running */
1912 tc35815_chip_reset(dev);
1913 free_irq(dev->irq, dev);
1914
1915 tc35815_free_queues(dev);
1916
1917 return 0;
1918
1919 }
1920
1921 /*
1922 * Get the current statistics.
1923 * This may be called with the card open or closed.
1924 */
1925 static struct net_device_stats *tc35815_get_stats(struct net_device *dev)
1926 {
1927 struct tc35815_regs __iomem *tr =
1928 (struct tc35815_regs __iomem *)dev->base_addr;
1929 if (netif_running(dev))
1930 /* Update the statistics from the device registers. */
1931 dev->stats.rx_missed_errors = tc_readl(&tr->Miss_Cnt);
1932
1933 return &dev->stats;
1934 }
1935
1936 static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr)
1937 {
1938 struct tc35815_local *lp = netdev_priv(dev);
1939 struct tc35815_regs __iomem *tr =
1940 (struct tc35815_regs __iomem *)dev->base_addr;
1941 int cam_index = index * 6;
1942 u32 cam_data;
1943 u32 saved_addr;
1944 DECLARE_MAC_BUF(mac);
1945
1946 saved_addr = tc_readl(&tr->CAM_Adr);
1947
1948 if (netif_msg_hw(lp))
1949 printk(KERN_DEBUG "%s: CAM %d: %s\n",
1950 dev->name, index, print_mac(mac, addr));
1951 if (index & 1) {
1952 /* read modify write */
1953 tc_writel(cam_index - 2, &tr->CAM_Adr);
1954 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000;
1955 cam_data |= addr[0] << 8 | addr[1];
1956 tc_writel(cam_data, &tr->CAM_Data);
1957 /* write whole word */
1958 tc_writel(cam_index + 2, &tr->CAM_Adr);
1959 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
1960 tc_writel(cam_data, &tr->CAM_Data);
1961 } else {
1962 /* write whole word */
1963 tc_writel(cam_index, &tr->CAM_Adr);
1964 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1965 tc_writel(cam_data, &tr->CAM_Data);
1966 /* read modify write */
1967 tc_writel(cam_index + 4, &tr->CAM_Adr);
1968 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff;
1969 cam_data |= addr[4] << 24 | (addr[5] << 16);
1970 tc_writel(cam_data, &tr->CAM_Data);
1971 }
1972
1973 tc_writel(saved_addr, &tr->CAM_Adr);
1974 }
1975
1976
1977 /*
1978 * Set or clear the multicast filter for this adaptor.
1979 * num_addrs == -1 Promiscuous mode, receive all packets
1980 * num_addrs == 0 Normal mode, clear multicast list
1981 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1982 * and do best-effort filtering.
1983 */
1984 static void
1985 tc35815_set_multicast_list(struct net_device *dev)
1986 {
1987 struct tc35815_regs __iomem *tr =
1988 (struct tc35815_regs __iomem *)dev->base_addr;
1989
1990 if (dev->flags&IFF_PROMISC)
1991 {
1992 #ifdef WORKAROUND_100HALF_PROMISC
1993 /* With some (all?) 100MHalf HUB, controller will hang
1994 * if we enabled promiscuous mode before linkup... */
1995 struct tc35815_local *lp = netdev_priv(dev);
1996 int pid = lp->phy_addr;
1997 if (!(tc_mdio_read(dev, pid, MII_BMSR) & BMSR_LSTATUS))
1998 return;
1999 #endif
2000 /* Enable promiscuous mode */
2001 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl);
2002 }
2003 else if((dev->flags&IFF_ALLMULTI) || dev->mc_count > CAM_ENTRY_MAX - 3)
2004 {
2005 /* CAM 0, 1, 20 are reserved. */
2006 /* Disable promiscuous mode, use normal mode. */
2007 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl);
2008 }
2009 else if(dev->mc_count)
2010 {
2011 struct dev_mc_list* cur_addr = dev->mc_list;
2012 int i;
2013 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE);
2014
2015 tc_writel(0, &tr->CAM_Ctl);
2016 /* Walk the address list, and load the filter */
2017 for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
2018 if (!cur_addr)
2019 break;
2020 /* entry 0,1 is reserved. */
2021 tc35815_set_cam_entry(dev, i + 2, cur_addr->dmi_addr);
2022 ena_bits |= CAM_Ena_Bit(i + 2);
2023 }
2024 tc_writel(ena_bits, &tr->CAM_Ena);
2025 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2026 }
2027 else {
2028 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2029 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2030 }
2031 }
2032
2033 static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2034 {
2035 struct tc35815_local *lp = netdev_priv(dev);
2036 strcpy(info->driver, MODNAME);
2037 strcpy(info->version, DRV_VERSION);
2038 strcpy(info->bus_info, pci_name(lp->pci_dev));
2039 }
2040
2041 static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2042 {
2043 struct tc35815_local *lp = netdev_priv(dev);
2044 spin_lock_irq(&lp->lock);
2045 mii_ethtool_gset(&lp->mii, cmd);
2046 spin_unlock_irq(&lp->lock);
2047 return 0;
2048 }
2049
2050 static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2051 {
2052 struct tc35815_local *lp = netdev_priv(dev);
2053 int rc;
2054 #if 1 /* use our negotiation method... */
2055 /* Verify the settings we care about. */
2056 if (cmd->autoneg != AUTONEG_ENABLE &&
2057 cmd->autoneg != AUTONEG_DISABLE)
2058 return -EINVAL;
2059 if (cmd->autoneg == AUTONEG_DISABLE &&
2060 ((cmd->speed != SPEED_100 &&
2061 cmd->speed != SPEED_10) ||
2062 (cmd->duplex != DUPLEX_HALF &&
2063 cmd->duplex != DUPLEX_FULL)))
2064 return -EINVAL;
2065
2066 /* Ok, do it to it. */
2067 spin_lock_irq(&lp->lock);
2068 del_timer(&lp->timer);
2069 tc35815_start_auto_negotiation(dev, cmd);
2070 spin_unlock_irq(&lp->lock);
2071 rc = 0;
2072 #else
2073 spin_lock_irq(&lp->lock);
2074 rc = mii_ethtool_sset(&lp->mii, cmd);
2075 spin_unlock_irq(&lp->lock);
2076 #endif
2077 return rc;
2078 }
2079
2080 static int tc35815_nway_reset(struct net_device *dev)
2081 {
2082 struct tc35815_local *lp = netdev_priv(dev);
2083 int rc;
2084 spin_lock_irq(&lp->lock);
2085 rc = mii_nway_restart(&lp->mii);
2086 spin_unlock_irq(&lp->lock);
2087 return rc;
2088 }
2089
2090 static u32 tc35815_get_link(struct net_device *dev)
2091 {
2092 struct tc35815_local *lp = netdev_priv(dev);
2093 int rc;
2094 spin_lock_irq(&lp->lock);
2095 rc = mii_link_ok(&lp->mii);
2096 spin_unlock_irq(&lp->lock);
2097 return rc;
2098 }
2099
2100 static u32 tc35815_get_msglevel(struct net_device *dev)
2101 {
2102 struct tc35815_local *lp = netdev_priv(dev);
2103 return lp->msg_enable;
2104 }
2105
2106 static void tc35815_set_msglevel(struct net_device *dev, u32 datum)
2107 {
2108 struct tc35815_local *lp = netdev_priv(dev);
2109 lp->msg_enable = datum;
2110 }
2111
2112 static int tc35815_get_sset_count(struct net_device *dev, int sset)
2113 {
2114 struct tc35815_local *lp = netdev_priv(dev);
2115
2116 switch (sset) {
2117 case ETH_SS_STATS:
2118 return sizeof(lp->lstats) / sizeof(int);
2119 default:
2120 return -EOPNOTSUPP;
2121 }
2122 }
2123
2124 static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2125 {
2126 struct tc35815_local *lp = netdev_priv(dev);
2127 data[0] = lp->lstats.max_tx_qlen;
2128 data[1] = lp->lstats.tx_ints;
2129 data[2] = lp->lstats.rx_ints;
2130 data[3] = lp->lstats.tx_underrun;
2131 }
2132
2133 static struct {
2134 const char str[ETH_GSTRING_LEN];
2135 } ethtool_stats_keys[] = {
2136 { "max_tx_qlen" },
2137 { "tx_ints" },
2138 { "rx_ints" },
2139 { "tx_underrun" },
2140 };
2141
2142 static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2143 {
2144 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2145 }
2146
2147 static const struct ethtool_ops tc35815_ethtool_ops = {
2148 .get_drvinfo = tc35815_get_drvinfo,
2149 .get_settings = tc35815_get_settings,
2150 .set_settings = tc35815_set_settings,
2151 .nway_reset = tc35815_nway_reset,
2152 .get_link = tc35815_get_link,
2153 .get_msglevel = tc35815_get_msglevel,
2154 .set_msglevel = tc35815_set_msglevel,
2155 .get_strings = tc35815_get_strings,
2156 .get_sset_count = tc35815_get_sset_count,
2157 .get_ethtool_stats = tc35815_get_ethtool_stats,
2158 };
2159
2160 static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2161 {
2162 struct tc35815_local *lp = netdev_priv(dev);
2163 int rc;
2164
2165 if (!netif_running(dev))
2166 return -EINVAL;
2167
2168 spin_lock_irq(&lp->lock);
2169 rc = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
2170 spin_unlock_irq(&lp->lock);
2171
2172 return rc;
2173 }
2174
2175 static int tc_mdio_read(struct net_device *dev, int phy_id, int location)
2176 {
2177 struct tc35815_regs __iomem *tr =
2178 (struct tc35815_regs __iomem *)dev->base_addr;
2179 u32 data;
2180 tc_writel(MD_CA_Busy | (phy_id << 5) | location, &tr->MD_CA);
2181 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
2182 ;
2183 data = tc_readl(&tr->MD_Data);
2184 return data & 0xffff;
2185 }
2186
2187 static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
2188 int val)
2189 {
2190 struct tc35815_regs __iomem *tr =
2191 (struct tc35815_regs __iomem *)dev->base_addr;
2192 tc_writel(val, &tr->MD_Data);
2193 tc_writel(MD_CA_Busy | MD_CA_Wr | (phy_id << 5) | location, &tr->MD_CA);
2194 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
2195 ;
2196 }
2197
2198 /* Auto negotiation. The scheme is very simple. We have a timer routine
2199 * that keeps watching the auto negotiation process as it progresses.
2200 * The DP83840 is first told to start doing it's thing, we set up the time
2201 * and place the timer state machine in it's initial state.
2202 *
2203 * Here the timer peeks at the DP83840 status registers at each click to see
2204 * if the auto negotiation has completed, we assume here that the DP83840 PHY
2205 * will time out at some point and just tell us what (didn't) happen. For
2206 * complete coverage we only allow so many of the ticks at this level to run,
2207 * when this has expired we print a warning message and try another strategy.
2208 * This "other" strategy is to force the interface into various speed/duplex
2209 * configurations and we stop when we see a link-up condition before the
2210 * maximum number of "peek" ticks have occurred.
2211 *
2212 * Once a valid link status has been detected we configure the BigMAC and
2213 * the rest of the Happy Meal to speak the most efficient protocol we could
2214 * get a clean link for. The priority for link configurations, highest first
2215 * is:
2216 * 100 Base-T Full Duplex
2217 * 100 Base-T Half Duplex
2218 * 10 Base-T Full Duplex
2219 * 10 Base-T Half Duplex
2220 *
2221 * We start a new timer now, after a successful auto negotiation status has
2222 * been detected. This timer just waits for the link-up bit to get set in
2223 * the BMCR of the DP83840. When this occurs we print a kernel log message
2224 * describing the link type in use and the fact that it is up.
2225 *
2226 * If a fatal error of some sort is signalled and detected in the interrupt
2227 * service routine, and the chip is reset, or the link is ifconfig'd down
2228 * and then back up, this entire process repeats itself all over again.
2229 */
2230 /* Note: Above comments are come from sunhme driver. */
2231
2232 static int tc35815_try_next_permutation(struct net_device *dev)
2233 {
2234 struct tc35815_local *lp = netdev_priv(dev);
2235 int pid = lp->phy_addr;
2236 unsigned short bmcr;
2237
2238 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2239
2240 /* Downgrade from full to half duplex. Only possible via ethtool. */
2241 if (bmcr & BMCR_FULLDPLX) {
2242 bmcr &= ~BMCR_FULLDPLX;
2243 printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
2244 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2245 return 0;
2246 }
2247
2248 /* Downgrade from 100 to 10. */
2249 if (bmcr & BMCR_SPEED100) {
2250 bmcr &= ~BMCR_SPEED100;
2251 printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
2252 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2253 return 0;
2254 }
2255
2256 /* We've tried everything. */
2257 return -1;
2258 }
2259
2260 static void
2261 tc35815_display_link_mode(struct net_device *dev)
2262 {
2263 struct tc35815_local *lp = netdev_priv(dev);
2264 int pid = lp->phy_addr;
2265 unsigned short lpa, bmcr;
2266 char *speed = "", *duplex = "";
2267
2268 lpa = tc_mdio_read(dev, pid, MII_LPA);
2269 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2270 if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
2271 speed = "100Mb/s";
2272 else
2273 speed = "10Mb/s";
2274 if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
2275 duplex = "Full Duplex";
2276 else
2277 duplex = "Half Duplex";
2278
2279 if (netif_msg_link(lp))
2280 printk(KERN_INFO "%s: Link is up at %s, %s.\n",
2281 dev->name, speed, duplex);
2282 printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2283 dev->name,
2284 bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
2285 }
2286
2287 static void tc35815_display_forced_link_mode(struct net_device *dev)
2288 {
2289 struct tc35815_local *lp = netdev_priv(dev);
2290 int pid = lp->phy_addr;
2291 unsigned short bmcr;
2292 char *speed = "", *duplex = "";
2293
2294 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2295 if (bmcr & BMCR_SPEED100)
2296 speed = "100Mb/s";
2297 else
2298 speed = "10Mb/s";
2299 if (bmcr & BMCR_FULLDPLX)
2300 duplex = "Full Duplex.\n";
2301 else
2302 duplex = "Half Duplex.\n";
2303
2304 if (netif_msg_link(lp))
2305 printk(KERN_INFO "%s: Link has been forced up at %s, %s",
2306 dev->name, speed, duplex);
2307 }
2308
2309 static void tc35815_set_link_modes(struct net_device *dev)
2310 {
2311 struct tc35815_local *lp = netdev_priv(dev);
2312 struct tc35815_regs __iomem *tr =
2313 (struct tc35815_regs __iomem *)dev->base_addr;
2314 int pid = lp->phy_addr;
2315 unsigned short bmcr, lpa;
2316 int speed;
2317
2318 if (lp->timer_state == arbwait) {
2319 lpa = tc_mdio_read(dev, pid, MII_LPA);
2320 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2321 printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2322 dev->name,
2323 bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
2324 if (!(lpa & (LPA_10HALF | LPA_10FULL |
2325 LPA_100HALF | LPA_100FULL))) {
2326 /* fall back to 10HALF */
2327 printk(KERN_INFO "%s: bad ability %04x - falling back to 10HD.\n",
2328 dev->name, lpa);
2329 lpa = LPA_10HALF;
2330 }
2331 if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
2332 lp->fullduplex = 1;
2333 else
2334 lp->fullduplex = 0;
2335 if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
2336 speed = 100;
2337 else
2338 speed = 10;
2339 } else {
2340 /* Forcing a link mode. */
2341 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2342 if (bmcr & BMCR_FULLDPLX)
2343 lp->fullduplex = 1;
2344 else
2345 lp->fullduplex = 0;
2346 if (bmcr & BMCR_SPEED100)
2347 speed = 100;
2348 else
2349 speed = 10;
2350 }
2351
2352 tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_HaltReq, &tr->MAC_Ctl);
2353 if (lp->fullduplex) {
2354 tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_FullDup, &tr->MAC_Ctl);
2355 } else {
2356 tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_FullDup, &tr->MAC_Ctl);
2357 }
2358 tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_HaltReq, &tr->MAC_Ctl);
2359
2360 /* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */
2361
2362 #ifndef NO_CHECK_CARRIER
2363 /* TX4939 does not have EnLCarr */
2364 if (lp->boardtype != TC35815_TX4939) {
2365 #ifdef WORKAROUND_LOSTCAR
2366 /* WORKAROUND: enable LostCrS only if half duplex operation */
2367 if (!lp->fullduplex && lp->boardtype != TC35815_TX4939)
2368 tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, &tr->Tx_Ctl);
2369 #endif
2370 }
2371 #endif
2372 lp->mii.full_duplex = lp->fullduplex;
2373 }
2374
2375 static void tc35815_timer(unsigned long data)
2376 {
2377 struct net_device *dev = (struct net_device *)data;
2378 struct tc35815_local *lp = netdev_priv(dev);
2379 int pid = lp->phy_addr;
2380 unsigned short bmsr, bmcr, lpa;
2381 int restart_timer = 0;
2382
2383 spin_lock_irq(&lp->lock);
2384
2385 lp->timer_ticks++;
2386 switch (lp->timer_state) {
2387 case arbwait:
2388 /*
2389 * Only allow for 5 ticks, thats 10 seconds and much too
2390 * long to wait for arbitration to complete.
2391 */
2392 /* TC35815 need more times... */
2393 if (lp->timer_ticks >= 10) {
2394 /* Enter force mode. */
2395 if (!options.doforce) {
2396 printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
2397 " cable probblem?\n", dev->name);
2398 /* Try to restart the adaptor. */
2399 tc35815_restart(dev);
2400 goto out;
2401 }
2402 printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
2403 " trying force link mode\n", dev->name);
2404 printk(KERN_DEBUG "%s: BMCR %x BMSR %x\n", dev->name,
2405 tc_mdio_read(dev, pid, MII_BMCR),
2406 tc_mdio_read(dev, pid, MII_BMSR));
2407 bmcr = BMCR_SPEED100;
2408 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2409
2410 /*
2411 * OK, seems we need do disable the transceiver
2412 * for the first tick to make sure we get an
2413 * accurate link state at the second tick.
2414 */
2415
2416 lp->timer_state = ltrywait;
2417 lp->timer_ticks = 0;
2418 restart_timer = 1;
2419 } else {
2420 /* Anything interesting happen? */
2421 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2422 if (bmsr & BMSR_ANEGCOMPLETE) {
2423 /* Just what we've been waiting for... */
2424 tc35815_set_link_modes(dev);
2425
2426 /*
2427 * Success, at least so far, advance our state
2428 * engine.
2429 */
2430 lp->timer_state = lupwait;
2431 restart_timer = 1;
2432 } else {
2433 restart_timer = 1;
2434 }
2435 }
2436 break;
2437
2438 case lupwait:
2439 /*
2440 * Auto negotiation was successful and we are awaiting a
2441 * link up status. I have decided to let this timer run
2442 * forever until some sort of error is signalled, reporting
2443 * a message to the user at 10 second intervals.
2444 */
2445 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2446 if (bmsr & BMSR_LSTATUS) {
2447 /*
2448 * Wheee, it's up, display the link mode in use and put
2449 * the timer to sleep.
2450 */
2451 tc35815_display_link_mode(dev);
2452 netif_carrier_on(dev);
2453 #ifdef WORKAROUND_100HALF_PROMISC
2454 /* delayed promiscuous enabling */
2455 if (dev->flags & IFF_PROMISC)
2456 tc35815_set_multicast_list(dev);
2457 #endif
2458 #if 1
2459 lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
2460 lp->timer_state = lcheck;
2461 restart_timer = 1;
2462 #else
2463 lp->timer_state = asleep;
2464 restart_timer = 0;
2465 #endif
2466 } else {
2467 if (lp->timer_ticks >= 10) {
2468 printk(KERN_NOTICE "%s: Auto negotiation successful, link still "
2469 "not completely up.\n", dev->name);
2470 lp->timer_ticks = 0;
2471 restart_timer = 1;
2472 } else {
2473 restart_timer = 1;
2474 }
2475 }
2476 break;
2477
2478 case ltrywait:
2479 /*
2480 * Making the timeout here too long can make it take
2481 * annoyingly long to attempt all of the link mode
2482 * permutations, but then again this is essentially
2483 * error recovery code for the most part.
2484 */
2485 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2486 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2487 if (lp->timer_ticks == 1) {
2488 /*
2489 * Re-enable transceiver, we'll re-enable the
2490 * transceiver next tick, then check link state
2491 * on the following tick.
2492 */
2493 restart_timer = 1;
2494 break;
2495 }
2496 if (lp->timer_ticks == 2) {
2497 restart_timer = 1;
2498 break;
2499 }
2500 if (bmsr & BMSR_LSTATUS) {
2501 /* Force mode selection success. */
2502 tc35815_display_forced_link_mode(dev);
2503 netif_carrier_on(dev);
2504 tc35815_set_link_modes(dev);
2505 #ifdef WORKAROUND_100HALF_PROMISC
2506 /* delayed promiscuous enabling */
2507 if (dev->flags & IFF_PROMISC)
2508 tc35815_set_multicast_list(dev);
2509 #endif
2510 #if 1
2511 lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
2512 lp->timer_state = lcheck;
2513 restart_timer = 1;
2514 #else
2515 lp->timer_state = asleep;
2516 restart_timer = 0;
2517 #endif
2518 } else {
2519 if (lp->timer_ticks >= 4) { /* 6 seconds or so... */
2520 int ret;
2521
2522 ret = tc35815_try_next_permutation(dev);
2523 if (ret == -1) {
2524 /*
2525 * Aieee, tried them all, reset the
2526 * chip and try all over again.
2527 */
2528 printk(KERN_NOTICE "%s: Link down, "
2529 "cable problem?\n",
2530 dev->name);
2531
2532 /* Try to restart the adaptor. */
2533 tc35815_restart(dev);
2534 goto out;
2535 }
2536 lp->timer_ticks = 0;
2537 restart_timer = 1;
2538 } else {
2539 restart_timer = 1;
2540 }
2541 }
2542 break;
2543
2544 case lcheck:
2545 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2546 lpa = tc_mdio_read(dev, pid, MII_LPA);
2547 if (bmcr & (BMCR_PDOWN | BMCR_ISOLATE | BMCR_RESET)) {
2548 printk(KERN_ERR "%s: PHY down? (BMCR %x)\n", dev->name,
2549 bmcr);
2550 } else if ((lp->saved_lpa ^ lpa) &
2551 (LPA_100FULL|LPA_100HALF|LPA_10FULL|LPA_10HALF)) {
2552 printk(KERN_NOTICE "%s: link status changed"
2553 " (BMCR %x LPA %x->%x)\n", dev->name,
2554 bmcr, lp->saved_lpa, lpa);
2555 } else {
2556 /* go on */
2557 restart_timer = 1;
2558 break;
2559 }
2560 /* Try to restart the adaptor. */
2561 tc35815_restart(dev);
2562 goto out;
2563
2564 case asleep:
2565 default:
2566 /* Can't happens.... */
2567 printk(KERN_ERR "%s: Aieee, link timer is asleep but we got "
2568 "one anyways!\n", dev->name);
2569 restart_timer = 0;
2570 lp->timer_ticks = 0;
2571 lp->timer_state = asleep; /* foo on you */
2572 break;
2573 }
2574
2575 if (restart_timer) {
2576 lp->timer.expires = jiffies + msecs_to_jiffies(1200);
2577 add_timer(&lp->timer);
2578 }
2579 out:
2580 spin_unlock_irq(&lp->lock);
2581 }
2582
2583 static void tc35815_start_auto_negotiation(struct net_device *dev,
2584 struct ethtool_cmd *ep)
2585 {
2586 struct tc35815_local *lp = netdev_priv(dev);
2587 int pid = lp->phy_addr;
2588 unsigned short bmsr, bmcr, advertize;
2589 int timeout;
2590
2591 netif_carrier_off(dev);
2592 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2593 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2594 advertize = tc_mdio_read(dev, pid, MII_ADVERTISE);
2595
2596 if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
2597 if (options.speed || options.duplex) {
2598 /* Advertise only specified configuration. */
2599 advertize &= ~(ADVERTISE_10HALF |
2600 ADVERTISE_10FULL |
2601 ADVERTISE_100HALF |
2602 ADVERTISE_100FULL);
2603 if (options.speed != 10) {
2604 if (options.duplex != 1)
2605 advertize |= ADVERTISE_100FULL;
2606 if (options.duplex != 2)
2607 advertize |= ADVERTISE_100HALF;
2608 }
2609 if (options.speed != 100) {
2610 if (options.duplex != 1)
2611 advertize |= ADVERTISE_10FULL;
2612 if (options.duplex != 2)
2613 advertize |= ADVERTISE_10HALF;
2614 }
2615 if (options.speed == 100)
2616 bmcr |= BMCR_SPEED100;
2617 else if (options.speed == 10)
2618 bmcr &= ~BMCR_SPEED100;
2619 if (options.duplex == 2)
2620 bmcr |= BMCR_FULLDPLX;
2621 else if (options.duplex == 1)
2622 bmcr &= ~BMCR_FULLDPLX;
2623 } else {
2624 /* Advertise everything we can support. */
2625 if (bmsr & BMSR_10HALF)
2626 advertize |= ADVERTISE_10HALF;
2627 else
2628 advertize &= ~ADVERTISE_10HALF;
2629 if (bmsr & BMSR_10FULL)
2630 advertize |= ADVERTISE_10FULL;
2631 else
2632 advertize &= ~ADVERTISE_10FULL;
2633 if (bmsr & BMSR_100HALF)
2634 advertize |= ADVERTISE_100HALF;
2635 else
2636 advertize &= ~ADVERTISE_100HALF;
2637 if (bmsr & BMSR_100FULL)
2638 advertize |= ADVERTISE_100FULL;
2639 else
2640 advertize &= ~ADVERTISE_100FULL;
2641 }
2642
2643 tc_mdio_write(dev, pid, MII_ADVERTISE, advertize);
2644
2645 /* Enable Auto-Negotiation, this is usually on already... */
2646 bmcr |= BMCR_ANENABLE;
2647 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2648
2649 /* Restart it to make sure it is going. */
2650 bmcr |= BMCR_ANRESTART;
2651 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2652 printk(KERN_DEBUG "%s: ADVERTISE %x BMCR %x\n", dev->name, advertize, bmcr);
2653
2654 /* BMCR_ANRESTART self clears when the process has begun. */
2655 timeout = 64; /* More than enough. */
2656 while (--timeout) {
2657 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2658 if (!(bmcr & BMCR_ANRESTART))
2659 break; /* got it. */
2660 udelay(10);
2661 }
2662 if (!timeout) {
2663 printk(KERN_ERR "%s: TC35815 would not start auto "
2664 "negotiation BMCR=0x%04x\n",
2665 dev->name, bmcr);
2666 printk(KERN_NOTICE "%s: Performing force link "
2667 "detection.\n", dev->name);
2668 goto force_link;
2669 } else {
2670 printk(KERN_DEBUG "%s: auto negotiation started.\n", dev->name);
2671 lp->timer_state = arbwait;
2672 }
2673 } else {
2674 force_link:
2675 /* Force the link up, trying first a particular mode.
2676 * Either we are here at the request of ethtool or
2677 * because the Happy Meal would not start to autoneg.
2678 */
2679
2680 /* Disable auto-negotiation in BMCR, enable the duplex and
2681 * speed setting, init the timer state machine, and fire it off.
2682 */
2683 if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
2684 bmcr = BMCR_SPEED100;
2685 } else {
2686 if (ep->speed == SPEED_100)
2687 bmcr = BMCR_SPEED100;
2688 else
2689 bmcr = 0;
2690 if (ep->duplex == DUPLEX_FULL)
2691 bmcr |= BMCR_FULLDPLX;
2692 }
2693 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2694
2695 /* OK, seems we need do disable the transceiver for the first
2696 * tick to make sure we get an accurate link state at the
2697 * second tick.
2698 */
2699 lp->timer_state = ltrywait;
2700 }
2701
2702 del_timer(&lp->timer);
2703 lp->timer_ticks = 0;
2704 lp->timer.expires = jiffies + msecs_to_jiffies(1200);
2705 add_timer(&lp->timer);
2706 }
2707
2708 static void tc35815_find_phy(struct net_device *dev)
2709 {
2710 struct tc35815_local *lp = netdev_priv(dev);
2711 int pid = lp->phy_addr;
2712 unsigned short id0;
2713
2714 /* find MII phy */
2715 for (pid = 31; pid >= 0; pid--) {
2716 id0 = tc_mdio_read(dev, pid, MII_BMSR);
2717 if (id0 != 0xffff && id0 != 0x0000 &&
2718 (id0 & BMSR_RESV) != (0xffff & BMSR_RESV) /* paranoia? */
2719 ) {
2720 lp->phy_addr = pid;
2721 break;
2722 }
2723 }
2724 if (pid < 0) {
2725 printk(KERN_ERR "%s: No MII Phy found.\n",
2726 dev->name);
2727 lp->phy_addr = pid = 0;
2728 }
2729
2730 lp->mii_id[0] = tc_mdio_read(dev, pid, MII_PHYSID1);
2731 lp->mii_id[1] = tc_mdio_read(dev, pid, MII_PHYSID2);
2732 if (netif_msg_hw(lp))
2733 printk(KERN_INFO "%s: PHY(%02x) ID %04x %04x\n", dev->name,
2734 pid, lp->mii_id[0], lp->mii_id[1]);
2735 }
2736
2737 static void tc35815_phy_chip_init(struct net_device *dev)
2738 {
2739 struct tc35815_local *lp = netdev_priv(dev);
2740 int pid = lp->phy_addr;
2741 unsigned short bmcr;
2742 struct ethtool_cmd ecmd, *ep;
2743
2744 /* dis-isolate if needed. */
2745 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2746 if (bmcr & BMCR_ISOLATE) {
2747 int count = 32;
2748 printk(KERN_DEBUG "%s: unisolating...", dev->name);
2749 tc_mdio_write(dev, pid, MII_BMCR, bmcr & ~BMCR_ISOLATE);
2750 while (--count) {
2751 if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_ISOLATE))
2752 break;
2753 udelay(20);
2754 }
2755 printk(" %s.\n", count ? "done" : "failed");
2756 }
2757
2758 if (options.speed && options.duplex) {
2759 ecmd.autoneg = AUTONEG_DISABLE;
2760 ecmd.speed = options.speed == 10 ? SPEED_10 : SPEED_100;
2761 ecmd.duplex = options.duplex == 1 ? DUPLEX_HALF : DUPLEX_FULL;
2762 ep = &ecmd;
2763 } else {
2764 ep = NULL;
2765 }
2766 tc35815_start_auto_negotiation(dev, ep);
2767 }
2768
2769 static void tc35815_chip_reset(struct net_device *dev)
2770 {
2771 struct tc35815_regs __iomem *tr =
2772 (struct tc35815_regs __iomem *)dev->base_addr;
2773 int i;
2774 /* reset the controller */
2775 tc_writel(MAC_Reset, &tr->MAC_Ctl);
2776 udelay(4); /* 3200ns */
2777 i = 0;
2778 while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) {
2779 if (i++ > 100) {
2780 printk(KERN_ERR "%s: MAC reset failed.\n", dev->name);
2781 break;
2782 }
2783 mdelay(1);
2784 }
2785 tc_writel(0, &tr->MAC_Ctl);
2786
2787 /* initialize registers to default value */
2788 tc_writel(0, &tr->DMA_Ctl);
2789 tc_writel(0, &tr->TxThrsh);
2790 tc_writel(0, &tr->TxPollCtr);
2791 tc_writel(0, &tr->RxFragSize);
2792 tc_writel(0, &tr->Int_En);
2793 tc_writel(0, &tr->FDA_Bas);
2794 tc_writel(0, &tr->FDA_Lim);
2795 tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */
2796 tc_writel(0, &tr->CAM_Ctl);
2797 tc_writel(0, &tr->Tx_Ctl);
2798 tc_writel(0, &tr->Rx_Ctl);
2799 tc_writel(0, &tr->CAM_Ena);
2800 (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */
2801
2802 /* initialize internal SRAM */
2803 tc_writel(DMA_TestMode, &tr->DMA_Ctl);
2804 for (i = 0; i < 0x1000; i += 4) {
2805 tc_writel(i, &tr->CAM_Adr);
2806 tc_writel(0, &tr->CAM_Data);
2807 }
2808 tc_writel(0, &tr->DMA_Ctl);
2809 }
2810
2811 static void tc35815_chip_init(struct net_device *dev)
2812 {
2813 struct tc35815_local *lp = netdev_priv(dev);
2814 struct tc35815_regs __iomem *tr =
2815 (struct tc35815_regs __iomem *)dev->base_addr;
2816 unsigned long txctl = TX_CTL_CMD;
2817
2818 tc35815_phy_chip_init(dev);
2819
2820 /* load station address to CAM */
2821 tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr);
2822
2823 /* Enable CAM (broadcast and unicast) */
2824 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2825 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2826
2827 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2828 if (HAVE_DMA_RXALIGN(lp))
2829 tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl);
2830 else
2831 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl);
2832 #ifdef TC35815_USE_PACKEDBUFFER
2833 tc_writel(RxFrag_EnPack | ETH_ZLEN, &tr->RxFragSize); /* Packing */
2834 #else
2835 tc_writel(ETH_ZLEN, &tr->RxFragSize);
2836 #endif
2837 tc_writel(0, &tr->TxPollCtr); /* Batch mode */
2838 tc_writel(TX_THRESHOLD, &tr->TxThrsh);
2839 tc_writel(INT_EN_CMD, &tr->Int_En);
2840
2841 /* set queues */
2842 tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas);
2843 tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base,
2844 &tr->FDA_Lim);
2845 /*
2846 * Activation method:
2847 * First, enable the MAC Transmitter and the DMA Receive circuits.
2848 * Then enable the DMA Transmitter and the MAC Receive circuits.
2849 */
2850 tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */
2851 tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */
2852
2853 /* start MAC transmitter */
2854 #ifndef NO_CHECK_CARRIER
2855 /* TX4939 does not have EnLCarr */
2856 if (lp->boardtype == TC35815_TX4939)
2857 txctl &= ~Tx_EnLCarr;
2858 #ifdef WORKAROUND_LOSTCAR
2859 /* WORKAROUND: ignore LostCrS in full duplex operation */
2860 if ((lp->timer_state != asleep && lp->timer_state != lcheck) ||
2861 lp->fullduplex)
2862 txctl &= ~Tx_EnLCarr;
2863 #endif
2864 #endif /* !NO_CHECK_CARRIER */
2865 #ifdef GATHER_TXINT
2866 txctl &= ~Tx_EnComp; /* disable global tx completion int. */
2867 #endif
2868 tc_writel(txctl, &tr->Tx_Ctl);
2869 }
2870
2871 #ifdef CONFIG_PM
2872 static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state)
2873 {
2874 struct net_device *dev = pci_get_drvdata(pdev);
2875 struct tc35815_local *lp = netdev_priv(dev);
2876 unsigned long flags;
2877
2878 pci_save_state(pdev);
2879 if (!netif_running(dev))
2880 return 0;
2881 netif_device_detach(dev);
2882 spin_lock_irqsave(&lp->lock, flags);
2883 del_timer(&lp->timer); /* Kill if running */
2884 tc35815_chip_reset(dev);
2885 spin_unlock_irqrestore(&lp->lock, flags);
2886 pci_set_power_state(pdev, PCI_D3hot);
2887 return 0;
2888 }
2889
2890 static int tc35815_resume(struct pci_dev *pdev)
2891 {
2892 struct net_device *dev = pci_get_drvdata(pdev);
2893 struct tc35815_local *lp = netdev_priv(dev);
2894 unsigned long flags;
2895
2896 pci_restore_state(pdev);
2897 if (!netif_running(dev))
2898 return 0;
2899 pci_set_power_state(pdev, PCI_D0);
2900 spin_lock_irqsave(&lp->lock, flags);
2901 tc35815_restart(dev);
2902 spin_unlock_irqrestore(&lp->lock, flags);
2903 netif_device_attach(dev);
2904 return 0;
2905 }
2906 #endif /* CONFIG_PM */
2907
2908 static struct pci_driver tc35815_pci_driver = {
2909 .name = MODNAME,
2910 .id_table = tc35815_pci_tbl,
2911 .probe = tc35815_init_one,
2912 .remove = __devexit_p(tc35815_remove_one),
2913 #ifdef CONFIG_PM
2914 .suspend = tc35815_suspend,
2915 .resume = tc35815_resume,
2916 #endif
2917 };
2918
2919 module_param_named(speed, options.speed, int, 0);
2920 MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps");
2921 module_param_named(duplex, options.duplex, int, 0);
2922 MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full");
2923 module_param_named(doforce, options.doforce, int, 0);
2924 MODULE_PARM_DESC(doforce, "try force link mode if auto-negotiation failed");
2925
2926 static int __init tc35815_init_module(void)
2927 {
2928 return pci_register_driver(&tc35815_pci_driver);
2929 }
2930
2931 static void __exit tc35815_cleanup_module(void)
2932 {
2933 pci_unregister_driver(&tc35815_pci_driver);
2934 }
2935
2936 module_init(tc35815_init_module);
2937 module_exit(tc35815_cleanup_module);
2938
2939 MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2940 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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