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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 | #define DRV_VERSION "1.39" | |
26 | static const char version[] = "tc35815.c:v" DRV_VERSION "\n"; | |
27 | #define MODNAME "tc35815" | |
28 | ||
29 | #include <linux/module.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/fcntl.h> | |
33 | #include <linux/interrupt.h> | |
34 | #include <linux/ioport.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/if_vlan.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/string.h> | |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/errno.h> | |
41 | #include <linux/netdevice.h> | |
42 | #include <linux/etherdevice.h> | |
43 | #include <linux/skbuff.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/pci.h> | |
46 | #include <linux/phy.h> | |
47 | #include <linux/workqueue.h> | |
48 | #include <linux/platform_device.h> | |
49 | #include <linux/prefetch.h> | |
50 | #include <asm/io.h> | |
51 | #include <asm/byteorder.h> | |
52 | ||
53 | enum tc35815_chiptype { | |
54 | TC35815CF = 0, | |
55 | TC35815_NWU, | |
56 | TC35815_TX4939, | |
57 | }; | |
58 | ||
59 | /* indexed by tc35815_chiptype, above */ | |
60 | static const struct { | |
61 | const char *name; | |
62 | } chip_info[] = { | |
63 | { "TOSHIBA TC35815CF 10/100BaseTX" }, | |
64 | { "TOSHIBA TC35815 with Wake on LAN" }, | |
65 | { "TOSHIBA TC35815/TX4939" }, | |
66 | }; | |
67 | ||
68 | static const struct pci_device_id tc35815_pci_tbl[] = { | |
69 | {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF }, | |
70 | {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU }, | |
71 | {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 }, | |
72 | {0,} | |
73 | }; | |
74 | MODULE_DEVICE_TABLE(pci, tc35815_pci_tbl); | |
75 | ||
76 | /* see MODULE_PARM_DESC */ | |
77 | static struct tc35815_options { | |
78 | int speed; | |
79 | int duplex; | |
80 | } options; | |
81 | ||
82 | /* | |
83 | * Registers | |
84 | */ | |
85 | struct tc35815_regs { | |
86 | __u32 DMA_Ctl; /* 0x00 */ | |
87 | __u32 TxFrmPtr; | |
88 | __u32 TxThrsh; | |
89 | __u32 TxPollCtr; | |
90 | __u32 BLFrmPtr; | |
91 | __u32 RxFragSize; | |
92 | __u32 Int_En; | |
93 | __u32 FDA_Bas; | |
94 | __u32 FDA_Lim; /* 0x20 */ | |
95 | __u32 Int_Src; | |
96 | __u32 unused0[2]; | |
97 | __u32 PauseCnt; | |
98 | __u32 RemPauCnt; | |
99 | __u32 TxCtlFrmStat; | |
100 | __u32 unused1; | |
101 | __u32 MAC_Ctl; /* 0x40 */ | |
102 | __u32 CAM_Ctl; | |
103 | __u32 Tx_Ctl; | |
104 | __u32 Tx_Stat; | |
105 | __u32 Rx_Ctl; | |
106 | __u32 Rx_Stat; | |
107 | __u32 MD_Data; | |
108 | __u32 MD_CA; | |
109 | __u32 CAM_Adr; /* 0x60 */ | |
110 | __u32 CAM_Data; | |
111 | __u32 CAM_Ena; | |
112 | __u32 PROM_Ctl; | |
113 | __u32 PROM_Data; | |
114 | __u32 Algn_Cnt; | |
115 | __u32 CRC_Cnt; | |
116 | __u32 Miss_Cnt; | |
117 | }; | |
118 | ||
119 | /* | |
120 | * Bit assignments | |
121 | */ | |
122 | /* DMA_Ctl bit assign ------------------------------------------------------- */ | |
123 | #define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */ | |
124 | #define DMA_RxAlign_1 0x00400000 | |
125 | #define DMA_RxAlign_2 0x00800000 | |
126 | #define DMA_RxAlign_3 0x00c00000 | |
127 | #define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */ | |
128 | #define DMA_IntMask 0x00040000 /* 1:Interrupt mask */ | |
129 | #define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */ | |
130 | #define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */ | |
131 | #define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */ | |
132 | #define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */ | |
133 | #define DMA_TestMode 0x00002000 /* 1:Test Mode */ | |
134 | #define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */ | |
135 | #define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */ | |
136 | ||
137 | /* RxFragSize bit assign ---------------------------------------------------- */ | |
138 | #define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */ | |
139 | #define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */ | |
140 | ||
141 | /* MAC_Ctl bit assign ------------------------------------------------------- */ | |
142 | #define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */ | |
143 | #define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */ | |
144 | #define MAC_MissRoll 0x00000400 /* 1:Missed Roll */ | |
145 | #define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */ | |
146 | #define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */ | |
147 | #define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/ | |
148 | #define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */ | |
149 | #define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */ | |
150 | #define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */ | |
151 | #define MAC_Reset 0x00000004 /* 1:Software Reset */ | |
152 | #define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */ | |
153 | #define MAC_HaltReq 0x00000001 /* 1:Halt request */ | |
154 | ||
155 | /* PROM_Ctl bit assign ------------------------------------------------------ */ | |
156 | #define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */ | |
157 | #define PROM_Read 0x00004000 /*10:Read operation */ | |
158 | #define PROM_Write 0x00002000 /*01:Write operation */ | |
159 | #define PROM_Erase 0x00006000 /*11:Erase operation */ | |
160 | /*00:Enable or Disable Writting, */ | |
161 | /* as specified in PROM_Addr. */ | |
162 | #define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */ | |
163 | /*00xxxx: disable */ | |
164 | ||
165 | /* CAM_Ctl bit assign ------------------------------------------------------- */ | |
166 | #define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */ | |
167 | #define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/ | |
168 | /* accept other */ | |
169 | #define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */ | |
170 | #define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */ | |
171 | #define CAM_StationAcc 0x00000001 /* 1:unicast accept */ | |
172 | ||
173 | /* CAM_Ena bit assign ------------------------------------------------------- */ | |
174 | #define CAM_ENTRY_MAX 21 /* CAM Data entry max count */ | |
175 | #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */ | |
176 | #define CAM_Ena_Bit(index) (1 << (index)) | |
177 | #define CAM_ENTRY_DESTINATION 0 | |
178 | #define CAM_ENTRY_SOURCE 1 | |
179 | #define CAM_ENTRY_MACCTL 20 | |
180 | ||
181 | /* Tx_Ctl bit assign -------------------------------------------------------- */ | |
182 | #define Tx_En 0x00000001 /* 1:Transmit enable */ | |
183 | #define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */ | |
184 | #define Tx_NoPad 0x00000004 /* 1:Suppress Padding */ | |
185 | #define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */ | |
186 | #define Tx_FBack 0x00000010 /* 1:Fast Back-off */ | |
187 | #define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */ | |
188 | #define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */ | |
189 | #define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */ | |
190 | #define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */ | |
191 | #define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */ | |
192 | #define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */ | |
193 | #define Tx_EnComp 0x00004000 /* 1:Enable Completion */ | |
194 | ||
195 | /* Tx_Stat bit assign ------------------------------------------------------- */ | |
196 | #define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */ | |
197 | #define Tx_ExColl 0x00000010 /* Excessive Collision */ | |
198 | #define Tx_TXDefer 0x00000020 /* Transmit Defered */ | |
199 | #define Tx_Paused 0x00000040 /* Transmit Paused */ | |
200 | #define Tx_IntTx 0x00000080 /* Interrupt on Tx */ | |
201 | #define Tx_Under 0x00000100 /* Underrun */ | |
202 | #define Tx_Defer 0x00000200 /* Deferral */ | |
203 | #define Tx_NCarr 0x00000400 /* No Carrier */ | |
204 | #define Tx_10Stat 0x00000800 /* 10Mbps Status */ | |
205 | #define Tx_LateColl 0x00001000 /* Late Collision */ | |
206 | #define Tx_TxPar 0x00002000 /* Tx Parity Error */ | |
207 | #define Tx_Comp 0x00004000 /* Completion */ | |
208 | #define Tx_Halted 0x00008000 /* Tx Halted */ | |
209 | #define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */ | |
210 | ||
211 | /* Rx_Ctl bit assign -------------------------------------------------------- */ | |
212 | #define Rx_EnGood 0x00004000 /* 1:Enable Good */ | |
213 | #define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */ | |
214 | #define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */ | |
215 | #define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */ | |
216 | #define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */ | |
217 | #define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */ | |
218 | #define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */ | |
219 | #define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */ | |
220 | #define Rx_ShortEn 0x00000008 /* 1:Short Enable */ | |
221 | #define Rx_LongEn 0x00000004 /* 1:Long Enable */ | |
222 | #define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */ | |
223 | #define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */ | |
224 | ||
225 | /* Rx_Stat bit assign ------------------------------------------------------- */ | |
226 | #define Rx_Halted 0x00008000 /* Rx Halted */ | |
227 | #define Rx_Good 0x00004000 /* Rx Good */ | |
228 | #define Rx_RxPar 0x00002000 /* Rx Parity Error */ | |
229 | #define Rx_TypePkt 0x00001000 /* Rx Type Packet */ | |
230 | #define Rx_LongErr 0x00000800 /* Rx Long Error */ | |
231 | #define Rx_Over 0x00000400 /* Rx Overflow */ | |
232 | #define Rx_CRCErr 0x00000200 /* Rx CRC Error */ | |
233 | #define Rx_Align 0x00000100 /* Rx Alignment Error */ | |
234 | #define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */ | |
235 | #define Rx_IntRx 0x00000040 /* Rx Interrupt */ | |
236 | #define Rx_CtlRecd 0x00000020 /* Rx Control Receive */ | |
237 | #define Rx_InLenErr 0x00000010 /* Rx In Range Frame Length Error */ | |
238 | ||
239 | #define Rx_Stat_Mask 0x0000FFF0 /* Rx All Status Mask */ | |
240 | ||
241 | /* Int_En bit assign -------------------------------------------------------- */ | |
242 | #define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */ | |
243 | #define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Ctl Complete Enable */ | |
244 | #define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */ | |
245 | #define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */ | |
246 | #define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */ | |
247 | #define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */ | |
248 | #define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */ | |
249 | #define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */ | |
250 | #define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */ | |
251 | #define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */ | |
252 | #define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */ | |
253 | #define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */ | |
254 | /* Exhausted Enable */ | |
255 | ||
256 | /* Int_Src bit assign ------------------------------------------------------- */ | |
257 | #define Int_NRabt 0x00004000 /* 1:Non Recoverable error */ | |
258 | #define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */ | |
259 | #define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */ | |
260 | #define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */ | |
261 | #define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */ | |
262 | #define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */ | |
263 | #define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */ | |
264 | #define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */ | |
265 | #define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */ | |
266 | #define Int_SWInt 0x00000020 /* 1:Software request & Clear */ | |
267 | #define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */ | |
268 | #define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */ | |
269 | #define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */ | |
270 | #define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */ | |
271 | #define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */ | |
272 | ||
273 | /* MD_CA bit assign --------------------------------------------------------- */ | |
274 | #define MD_CA_PreSup 0x00001000 /* 1:Preamble Suppress */ | |
275 | #define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */ | |
276 | #define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */ | |
277 | ||
278 | ||
279 | /* | |
280 | * Descriptors | |
281 | */ | |
282 | ||
283 | /* Frame descriptor */ | |
284 | struct FDesc { | |
285 | volatile __u32 FDNext; | |
286 | volatile __u32 FDSystem; | |
287 | volatile __u32 FDStat; | |
288 | volatile __u32 FDCtl; | |
289 | }; | |
290 | ||
291 | /* Buffer descriptor */ | |
292 | struct BDesc { | |
293 | volatile __u32 BuffData; | |
294 | volatile __u32 BDCtl; | |
295 | }; | |
296 | ||
297 | #define FD_ALIGN 16 | |
298 | ||
299 | /* Frame Descriptor bit assign ---------------------------------------------- */ | |
300 | #define FD_FDLength_MASK 0x0000FFFF /* Length MASK */ | |
301 | #define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */ | |
302 | #define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */ | |
303 | #define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */ | |
304 | #define FD_FrmOpt_IntTx 0x20000000 /* Tx only */ | |
305 | #define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */ | |
306 | #define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */ | |
307 | #define FD_FrmOpt_Packing 0x04000000 /* Rx only */ | |
308 | #define FD_CownsFD 0x80000000 /* FD Controller owner bit */ | |
309 | #define FD_Next_EOL 0x00000001 /* FD EOL indicator */ | |
310 | #define FD_BDCnt_SHIFT 16 | |
311 | ||
312 | /* Buffer Descriptor bit assign --------------------------------------------- */ | |
313 | #define BD_BuffLength_MASK 0x0000FFFF /* Receive Data Size */ | |
314 | #define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */ | |
315 | #define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */ | |
316 | #define BD_CownsBD 0x80000000 /* BD Controller owner bit */ | |
317 | #define BD_RxBDID_SHIFT 16 | |
318 | #define BD_RxBDSeqN_SHIFT 24 | |
319 | ||
320 | ||
321 | /* Some useful constants. */ | |
322 | ||
323 | #define TX_CTL_CMD (Tx_EnTxPar | Tx_EnLateColl | \ | |
324 | Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \ | |
325 | Tx_En) /* maybe 0x7b01 */ | |
326 | /* Do not use Rx_StripCRC -- it causes trouble on BLEx/FDAEx condition */ | |
327 | #define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \ | |
328 | | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */ | |
329 | #define INT_EN_CMD (Int_NRAbtEn | \ | |
330 | Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \ | |
331 | Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \ | |
332 | Int_STargAbtEn | \ | |
333 | Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/ | |
334 | #define DMA_CTL_CMD DMA_BURST_SIZE | |
335 | #define HAVE_DMA_RXALIGN(lp) likely((lp)->chiptype != TC35815CF) | |
336 | ||
337 | /* Tuning parameters */ | |
338 | #define DMA_BURST_SIZE 32 | |
339 | #define TX_THRESHOLD 1024 | |
340 | /* used threshold with packet max byte for low pci transfer ability.*/ | |
341 | #define TX_THRESHOLD_MAX 1536 | |
342 | /* setting threshold max value when overrun error occurred this count. */ | |
343 | #define TX_THRESHOLD_KEEP_LIMIT 10 | |
344 | ||
345 | /* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */ | |
346 | #define FD_PAGE_NUM 4 | |
347 | #define RX_BUF_NUM 128 /* < 256 */ | |
348 | #define RX_FD_NUM 256 /* >= 32 */ | |
349 | #define TX_FD_NUM 128 | |
350 | #if RX_CTL_CMD & Rx_LongEn | |
351 | #define RX_BUF_SIZE PAGE_SIZE | |
352 | #elif RX_CTL_CMD & Rx_StripCRC | |
353 | #define RX_BUF_SIZE \ | |
354 | L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + NET_IP_ALIGN) | |
355 | #else | |
356 | #define RX_BUF_SIZE \ | |
357 | L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN + NET_IP_ALIGN) | |
358 | #endif | |
359 | #define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */ | |
360 | #define NAPI_WEIGHT 16 | |
361 | ||
362 | struct TxFD { | |
363 | struct FDesc fd; | |
364 | struct BDesc bd; | |
365 | struct BDesc unused; | |
366 | }; | |
367 | ||
368 | struct RxFD { | |
369 | struct FDesc fd; | |
370 | struct BDesc bd[0]; /* variable length */ | |
371 | }; | |
372 | ||
373 | struct FrFD { | |
374 | struct FDesc fd; | |
375 | struct BDesc bd[RX_BUF_NUM]; | |
376 | }; | |
377 | ||
378 | ||
379 | #define tc_readl(addr) ioread32(addr) | |
380 | #define tc_writel(d, addr) iowrite32(d, addr) | |
381 | ||
382 | #define TC35815_TX_TIMEOUT msecs_to_jiffies(400) | |
383 | ||
384 | /* Information that need to be kept for each controller. */ | |
385 | struct tc35815_local { | |
386 | struct pci_dev *pci_dev; | |
387 | ||
388 | struct net_device *dev; | |
389 | struct napi_struct napi; | |
390 | ||
391 | /* statistics */ | |
392 | struct { | |
393 | int max_tx_qlen; | |
394 | int tx_ints; | |
395 | int rx_ints; | |
396 | int tx_underrun; | |
397 | } lstats; | |
398 | ||
399 | /* Tx control lock. This protects the transmit buffer ring | |
400 | * state along with the "tx full" state of the driver. This | |
401 | * means all netif_queue flow control actions are protected | |
402 | * by this lock as well. | |
403 | */ | |
404 | spinlock_t lock; | |
405 | spinlock_t rx_lock; | |
406 | ||
407 | struct mii_bus *mii_bus; | |
408 | int duplex; | |
409 | int speed; | |
410 | int link; | |
411 | struct work_struct restart_work; | |
412 | ||
413 | /* | |
414 | * Transmitting: Batch Mode. | |
415 | * 1 BD in 1 TxFD. | |
416 | * Receiving: Non-Packing Mode. | |
417 | * 1 circular FD for Free Buffer List. | |
418 | * RX_BUF_NUM BD in Free Buffer FD. | |
419 | * One Free Buffer BD has ETH_FRAME_LEN data buffer. | |
420 | */ | |
421 | void *fd_buf; /* for TxFD, RxFD, FrFD */ | |
422 | dma_addr_t fd_buf_dma; | |
423 | struct TxFD *tfd_base; | |
424 | unsigned int tfd_start; | |
425 | unsigned int tfd_end; | |
426 | struct RxFD *rfd_base; | |
427 | struct RxFD *rfd_limit; | |
428 | struct RxFD *rfd_cur; | |
429 | struct FrFD *fbl_ptr; | |
430 | unsigned int fbl_count; | |
431 | struct { | |
432 | struct sk_buff *skb; | |
433 | dma_addr_t skb_dma; | |
434 | } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM]; | |
435 | u32 msg_enable; | |
436 | enum tc35815_chiptype chiptype; | |
437 | }; | |
438 | ||
439 | static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt) | |
440 | { | |
441 | return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf); | |
442 | } | |
443 | #ifdef DEBUG | |
444 | static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus) | |
445 | { | |
446 | return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma)); | |
447 | } | |
448 | #endif | |
449 | static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev, | |
450 | struct pci_dev *hwdev, | |
451 | dma_addr_t *dma_handle) | |
452 | { | |
453 | struct sk_buff *skb; | |
454 | skb = netdev_alloc_skb(dev, RX_BUF_SIZE); | |
455 | if (!skb) | |
456 | return NULL; | |
457 | *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE, | |
458 | PCI_DMA_FROMDEVICE); | |
459 | if (pci_dma_mapping_error(hwdev, *dma_handle)) { | |
460 | dev_kfree_skb_any(skb); | |
461 | return NULL; | |
462 | } | |
463 | skb_reserve(skb, 2); /* make IP header 4byte aligned */ | |
464 | return skb; | |
465 | } | |
466 | ||
467 | static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle) | |
468 | { | |
469 | pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE, | |
470 | PCI_DMA_FROMDEVICE); | |
471 | dev_kfree_skb_any(skb); | |
472 | } | |
473 | ||
474 | /* Index to functions, as function prototypes. */ | |
475 | ||
476 | static int tc35815_open(struct net_device *dev); | |
477 | static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev); | |
478 | static irqreturn_t tc35815_interrupt(int irq, void *dev_id); | |
479 | static int tc35815_rx(struct net_device *dev, int limit); | |
480 | static int tc35815_poll(struct napi_struct *napi, int budget); | |
481 | static void tc35815_txdone(struct net_device *dev); | |
482 | static int tc35815_close(struct net_device *dev); | |
483 | static struct net_device_stats *tc35815_get_stats(struct net_device *dev); | |
484 | static void tc35815_set_multicast_list(struct net_device *dev); | |
485 | static void tc35815_tx_timeout(struct net_device *dev); | |
486 | static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
487 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
488 | static void tc35815_poll_controller(struct net_device *dev); | |
489 | #endif | |
490 | static const struct ethtool_ops tc35815_ethtool_ops; | |
491 | ||
492 | /* Example routines you must write ;->. */ | |
493 | static void tc35815_chip_reset(struct net_device *dev); | |
494 | static void tc35815_chip_init(struct net_device *dev); | |
495 | ||
496 | #ifdef DEBUG | |
497 | static void panic_queues(struct net_device *dev); | |
498 | #endif | |
499 | ||
500 | static void tc35815_restart_work(struct work_struct *work); | |
501 | ||
502 | static int tc_mdio_read(struct mii_bus *bus, int mii_id, int regnum) | |
503 | { | |
504 | struct net_device *dev = bus->priv; | |
505 | struct tc35815_regs __iomem *tr = | |
506 | (struct tc35815_regs __iomem *)dev->base_addr; | |
507 | unsigned long timeout = jiffies + HZ; | |
508 | ||
509 | tc_writel(MD_CA_Busy | (mii_id << 5) | (regnum & 0x1f), &tr->MD_CA); | |
510 | udelay(12); /* it takes 32 x 400ns at least */ | |
511 | while (tc_readl(&tr->MD_CA) & MD_CA_Busy) { | |
512 | if (time_after(jiffies, timeout)) | |
513 | return -EIO; | |
514 | cpu_relax(); | |
515 | } | |
516 | return tc_readl(&tr->MD_Data) & 0xffff; | |
517 | } | |
518 | ||
519 | static int tc_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 val) | |
520 | { | |
521 | struct net_device *dev = bus->priv; | |
522 | struct tc35815_regs __iomem *tr = | |
523 | (struct tc35815_regs __iomem *)dev->base_addr; | |
524 | unsigned long timeout = jiffies + HZ; | |
525 | ||
526 | tc_writel(val, &tr->MD_Data); | |
527 | tc_writel(MD_CA_Busy | MD_CA_Wr | (mii_id << 5) | (regnum & 0x1f), | |
528 | &tr->MD_CA); | |
529 | udelay(12); /* it takes 32 x 400ns at least */ | |
530 | while (tc_readl(&tr->MD_CA) & MD_CA_Busy) { | |
531 | if (time_after(jiffies, timeout)) | |
532 | return -EIO; | |
533 | cpu_relax(); | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | ||
538 | static void tc_handle_link_change(struct net_device *dev) | |
539 | { | |
540 | struct tc35815_local *lp = netdev_priv(dev); | |
541 | struct phy_device *phydev = dev->phydev; | |
542 | unsigned long flags; | |
543 | int status_change = 0; | |
544 | ||
545 | spin_lock_irqsave(&lp->lock, flags); | |
546 | if (phydev->link && | |
547 | (lp->speed != phydev->speed || lp->duplex != phydev->duplex)) { | |
548 | struct tc35815_regs __iomem *tr = | |
549 | (struct tc35815_regs __iomem *)dev->base_addr; | |
550 | u32 reg; | |
551 | ||
552 | reg = tc_readl(&tr->MAC_Ctl); | |
553 | reg |= MAC_HaltReq; | |
554 | tc_writel(reg, &tr->MAC_Ctl); | |
555 | if (phydev->duplex == DUPLEX_FULL) | |
556 | reg |= MAC_FullDup; | |
557 | else | |
558 | reg &= ~MAC_FullDup; | |
559 | tc_writel(reg, &tr->MAC_Ctl); | |
560 | reg &= ~MAC_HaltReq; | |
561 | tc_writel(reg, &tr->MAC_Ctl); | |
562 | ||
563 | /* | |
564 | * TX4939 PCFG.SPEEDn bit will be changed on | |
565 | * NETDEV_CHANGE event. | |
566 | */ | |
567 | /* | |
568 | * WORKAROUND: enable LostCrS only if half duplex | |
569 | * operation. | |
570 | * (TX4939 does not have EnLCarr) | |
571 | */ | |
572 | if (phydev->duplex == DUPLEX_HALF && | |
573 | lp->chiptype != TC35815_TX4939) | |
574 | tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, | |
575 | &tr->Tx_Ctl); | |
576 | ||
577 | lp->speed = phydev->speed; | |
578 | lp->duplex = phydev->duplex; | |
579 | status_change = 1; | |
580 | } | |
581 | ||
582 | if (phydev->link != lp->link) { | |
583 | if (phydev->link) { | |
584 | /* delayed promiscuous enabling */ | |
585 | if (dev->flags & IFF_PROMISC) | |
586 | tc35815_set_multicast_list(dev); | |
587 | } else { | |
588 | lp->speed = 0; | |
589 | lp->duplex = -1; | |
590 | } | |
591 | lp->link = phydev->link; | |
592 | ||
593 | status_change = 1; | |
594 | } | |
595 | spin_unlock_irqrestore(&lp->lock, flags); | |
596 | ||
597 | if (status_change && netif_msg_link(lp)) { | |
598 | phy_print_status(phydev); | |
599 | pr_debug("%s: MII BMCR %04x BMSR %04x LPA %04x\n", | |
600 | dev->name, | |
601 | phy_read(phydev, MII_BMCR), | |
602 | phy_read(phydev, MII_BMSR), | |
603 | phy_read(phydev, MII_LPA)); | |
604 | } | |
605 | } | |
606 | ||
607 | static int tc_mii_probe(struct net_device *dev) | |
608 | { | |
609 | struct tc35815_local *lp = netdev_priv(dev); | |
610 | struct phy_device *phydev; | |
611 | u32 dropmask; | |
612 | ||
613 | phydev = phy_find_first(lp->mii_bus); | |
614 | if (!phydev) { | |
615 | printk(KERN_ERR "%s: no PHY found\n", dev->name); | |
616 | return -ENODEV; | |
617 | } | |
618 | ||
619 | /* attach the mac to the phy */ | |
620 | phydev = phy_connect(dev, phydev_name(phydev), | |
621 | &tc_handle_link_change, | |
622 | lp->chiptype == TC35815_TX4939 ? PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII); | |
623 | if (IS_ERR(phydev)) { | |
624 | printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); | |
625 | return PTR_ERR(phydev); | |
626 | } | |
627 | ||
628 | phy_attached_info(phydev); | |
629 | ||
630 | /* mask with MAC supported features */ | |
631 | phydev->supported &= PHY_BASIC_FEATURES; | |
632 | dropmask = 0; | |
633 | if (options.speed == 10) | |
634 | dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; | |
635 | else if (options.speed == 100) | |
636 | dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; | |
637 | if (options.duplex == 1) | |
638 | dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full; | |
639 | else if (options.duplex == 2) | |
640 | dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half; | |
641 | phydev->supported &= ~dropmask; | |
642 | phydev->advertising = phydev->supported; | |
643 | ||
644 | lp->link = 0; | |
645 | lp->speed = 0; | |
646 | lp->duplex = -1; | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static int tc_mii_init(struct net_device *dev) | |
652 | { | |
653 | struct tc35815_local *lp = netdev_priv(dev); | |
654 | int err; | |
655 | ||
656 | lp->mii_bus = mdiobus_alloc(); | |
657 | if (lp->mii_bus == NULL) { | |
658 | err = -ENOMEM; | |
659 | goto err_out; | |
660 | } | |
661 | ||
662 | lp->mii_bus->name = "tc35815_mii_bus"; | |
663 | lp->mii_bus->read = tc_mdio_read; | |
664 | lp->mii_bus->write = tc_mdio_write; | |
665 | snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", | |
666 | (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn); | |
667 | lp->mii_bus->priv = dev; | |
668 | lp->mii_bus->parent = &lp->pci_dev->dev; | |
669 | err = mdiobus_register(lp->mii_bus); | |
670 | if (err) | |
671 | goto err_out_free_mii_bus; | |
672 | err = tc_mii_probe(dev); | |
673 | if (err) | |
674 | goto err_out_unregister_bus; | |
675 | return 0; | |
676 | ||
677 | err_out_unregister_bus: | |
678 | mdiobus_unregister(lp->mii_bus); | |
679 | err_out_free_mii_bus: | |
680 | mdiobus_free(lp->mii_bus); | |
681 | err_out: | |
682 | return err; | |
683 | } | |
684 | ||
685 | #ifdef CONFIG_CPU_TX49XX | |
686 | /* | |
687 | * Find a platform_device providing a MAC address. The platform code | |
688 | * should provide a "tc35815-mac" device with a MAC address in its | |
689 | * platform_data. | |
690 | */ | |
691 | static int tc35815_mac_match(struct device *dev, void *data) | |
692 | { | |
693 | struct platform_device *plat_dev = to_platform_device(dev); | |
694 | struct pci_dev *pci_dev = data; | |
695 | unsigned int id = pci_dev->irq; | |
696 | return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id; | |
697 | } | |
698 | ||
699 | static int tc35815_read_plat_dev_addr(struct net_device *dev) | |
700 | { | |
701 | struct tc35815_local *lp = netdev_priv(dev); | |
702 | struct device *pd = bus_find_device(&platform_bus_type, NULL, | |
703 | lp->pci_dev, tc35815_mac_match); | |
704 | if (pd) { | |
705 | if (pd->platform_data) | |
706 | memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN); | |
707 | put_device(pd); | |
708 | return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV; | |
709 | } | |
710 | return -ENODEV; | |
711 | } | |
712 | #else | |
713 | static int tc35815_read_plat_dev_addr(struct net_device *dev) | |
714 | { | |
715 | return -ENODEV; | |
716 | } | |
717 | #endif | |
718 | ||
719 | static int tc35815_init_dev_addr(struct net_device *dev) | |
720 | { | |
721 | struct tc35815_regs __iomem *tr = | |
722 | (struct tc35815_regs __iomem *)dev->base_addr; | |
723 | int i; | |
724 | ||
725 | while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) | |
726 | ; | |
727 | for (i = 0; i < 6; i += 2) { | |
728 | unsigned short data; | |
729 | tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl); | |
730 | while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) | |
731 | ; | |
732 | data = tc_readl(&tr->PROM_Data); | |
733 | dev->dev_addr[i] = data & 0xff; | |
734 | dev->dev_addr[i+1] = data >> 8; | |
735 | } | |
736 | if (!is_valid_ether_addr(dev->dev_addr)) | |
737 | return tc35815_read_plat_dev_addr(dev); | |
738 | return 0; | |
739 | } | |
740 | ||
741 | static const struct net_device_ops tc35815_netdev_ops = { | |
742 | .ndo_open = tc35815_open, | |
743 | .ndo_stop = tc35815_close, | |
744 | .ndo_start_xmit = tc35815_send_packet, | |
745 | .ndo_get_stats = tc35815_get_stats, | |
746 | .ndo_set_rx_mode = tc35815_set_multicast_list, | |
747 | .ndo_tx_timeout = tc35815_tx_timeout, | |
748 | .ndo_do_ioctl = tc35815_ioctl, | |
749 | .ndo_validate_addr = eth_validate_addr, | |
750 | .ndo_set_mac_address = eth_mac_addr, | |
751 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
752 | .ndo_poll_controller = tc35815_poll_controller, | |
753 | #endif | |
754 | }; | |
755 | ||
756 | static int tc35815_init_one(struct pci_dev *pdev, | |
757 | const struct pci_device_id *ent) | |
758 | { | |
759 | void __iomem *ioaddr = NULL; | |
760 | struct net_device *dev; | |
761 | struct tc35815_local *lp; | |
762 | int rc; | |
763 | ||
764 | static int printed_version; | |
765 | if (!printed_version++) { | |
766 | printk(version); | |
767 | dev_printk(KERN_DEBUG, &pdev->dev, | |
768 | "speed:%d duplex:%d\n", | |
769 | options.speed, options.duplex); | |
770 | } | |
771 | ||
772 | if (!pdev->irq) { | |
773 | dev_warn(&pdev->dev, "no IRQ assigned.\n"); | |
774 | return -ENODEV; | |
775 | } | |
776 | ||
777 | /* dev zeroed in alloc_etherdev */ | |
778 | dev = alloc_etherdev(sizeof(*lp)); | |
779 | if (dev == NULL) | |
780 | return -ENOMEM; | |
781 | ||
782 | SET_NETDEV_DEV(dev, &pdev->dev); | |
783 | lp = netdev_priv(dev); | |
784 | lp->dev = dev; | |
785 | ||
786 | /* enable device (incl. PCI PM wakeup), and bus-mastering */ | |
787 | rc = pcim_enable_device(pdev); | |
788 | if (rc) | |
789 | goto err_out; | |
790 | rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME); | |
791 | if (rc) | |
792 | goto err_out; | |
793 | pci_set_master(pdev); | |
794 | ioaddr = pcim_iomap_table(pdev)[1]; | |
795 | ||
796 | /* Initialize the device structure. */ | |
797 | dev->netdev_ops = &tc35815_netdev_ops; | |
798 | dev->ethtool_ops = &tc35815_ethtool_ops; | |
799 | dev->watchdog_timeo = TC35815_TX_TIMEOUT; | |
800 | netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT); | |
801 | ||
802 | dev->irq = pdev->irq; | |
803 | dev->base_addr = (unsigned long)ioaddr; | |
804 | ||
805 | INIT_WORK(&lp->restart_work, tc35815_restart_work); | |
806 | spin_lock_init(&lp->lock); | |
807 | spin_lock_init(&lp->rx_lock); | |
808 | lp->pci_dev = pdev; | |
809 | lp->chiptype = ent->driver_data; | |
810 | ||
811 | lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK; | |
812 | pci_set_drvdata(pdev, dev); | |
813 | ||
814 | /* Soft reset the chip. */ | |
815 | tc35815_chip_reset(dev); | |
816 | ||
817 | /* Retrieve the ethernet address. */ | |
818 | if (tc35815_init_dev_addr(dev)) { | |
819 | dev_warn(&pdev->dev, "not valid ether addr\n"); | |
820 | eth_hw_addr_random(dev); | |
821 | } | |
822 | ||
823 | rc = register_netdev(dev); | |
824 | if (rc) | |
825 | goto err_out; | |
826 | ||
827 | printk(KERN_INFO "%s: %s at 0x%lx, %pM, IRQ %d\n", | |
828 | dev->name, | |
829 | chip_info[ent->driver_data].name, | |
830 | dev->base_addr, | |
831 | dev->dev_addr, | |
832 | dev->irq); | |
833 | ||
834 | rc = tc_mii_init(dev); | |
835 | if (rc) | |
836 | goto err_out_unregister; | |
837 | ||
838 | return 0; | |
839 | ||
840 | err_out_unregister: | |
841 | unregister_netdev(dev); | |
842 | err_out: | |
843 | free_netdev(dev); | |
844 | return rc; | |
845 | } | |
846 | ||
847 | ||
848 | static void tc35815_remove_one(struct pci_dev *pdev) | |
849 | { | |
850 | struct net_device *dev = pci_get_drvdata(pdev); | |
851 | struct tc35815_local *lp = netdev_priv(dev); | |
852 | ||
853 | phy_disconnect(dev->phydev); | |
854 | mdiobus_unregister(lp->mii_bus); | |
855 | mdiobus_free(lp->mii_bus); | |
856 | unregister_netdev(dev); | |
857 | free_netdev(dev); | |
858 | } | |
859 | ||
860 | static int | |
861 | tc35815_init_queues(struct net_device *dev) | |
862 | { | |
863 | struct tc35815_local *lp = netdev_priv(dev); | |
864 | int i; | |
865 | unsigned long fd_addr; | |
866 | ||
867 | if (!lp->fd_buf) { | |
868 | BUG_ON(sizeof(struct FDesc) + | |
869 | sizeof(struct BDesc) * RX_BUF_NUM + | |
870 | sizeof(struct FDesc) * RX_FD_NUM + | |
871 | sizeof(struct TxFD) * TX_FD_NUM > | |
872 | PAGE_SIZE * FD_PAGE_NUM); | |
873 | ||
874 | lp->fd_buf = pci_alloc_consistent(lp->pci_dev, | |
875 | PAGE_SIZE * FD_PAGE_NUM, | |
876 | &lp->fd_buf_dma); | |
877 | if (!lp->fd_buf) | |
878 | return -ENOMEM; | |
879 | for (i = 0; i < RX_BUF_NUM; i++) { | |
880 | lp->rx_skbs[i].skb = | |
881 | alloc_rxbuf_skb(dev, lp->pci_dev, | |
882 | &lp->rx_skbs[i].skb_dma); | |
883 | if (!lp->rx_skbs[i].skb) { | |
884 | while (--i >= 0) { | |
885 | free_rxbuf_skb(lp->pci_dev, | |
886 | lp->rx_skbs[i].skb, | |
887 | lp->rx_skbs[i].skb_dma); | |
888 | lp->rx_skbs[i].skb = NULL; | |
889 | } | |
890 | pci_free_consistent(lp->pci_dev, | |
891 | PAGE_SIZE * FD_PAGE_NUM, | |
892 | lp->fd_buf, | |
893 | lp->fd_buf_dma); | |
894 | lp->fd_buf = NULL; | |
895 | return -ENOMEM; | |
896 | } | |
897 | } | |
898 | printk(KERN_DEBUG "%s: FD buf %p DataBuf", | |
899 | dev->name, lp->fd_buf); | |
900 | printk("\n"); | |
901 | } else { | |
902 | for (i = 0; i < FD_PAGE_NUM; i++) | |
903 | clear_page((void *)((unsigned long)lp->fd_buf + | |
904 | i * PAGE_SIZE)); | |
905 | } | |
906 | fd_addr = (unsigned long)lp->fd_buf; | |
907 | ||
908 | /* Free Descriptors (for Receive) */ | |
909 | lp->rfd_base = (struct RxFD *)fd_addr; | |
910 | fd_addr += sizeof(struct RxFD) * RX_FD_NUM; | |
911 | for (i = 0; i < RX_FD_NUM; i++) | |
912 | lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD); | |
913 | lp->rfd_cur = lp->rfd_base; | |
914 | lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1); | |
915 | ||
916 | /* Transmit Descriptors */ | |
917 | lp->tfd_base = (struct TxFD *)fd_addr; | |
918 | fd_addr += sizeof(struct TxFD) * TX_FD_NUM; | |
919 | for (i = 0; i < TX_FD_NUM; i++) { | |
920 | lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1])); | |
921 | lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); | |
922 | lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0); | |
923 | } | |
924 | lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0])); | |
925 | lp->tfd_start = 0; | |
926 | lp->tfd_end = 0; | |
927 | ||
928 | /* Buffer List (for Receive) */ | |
929 | lp->fbl_ptr = (struct FrFD *)fd_addr; | |
930 | lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr)); | |
931 | lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD); | |
932 | /* | |
933 | * move all allocated skbs to head of rx_skbs[] array. | |
934 | * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in | |
935 | * tc35815_rx() had failed. | |
936 | */ | |
937 | lp->fbl_count = 0; | |
938 | for (i = 0; i < RX_BUF_NUM; i++) { | |
939 | if (lp->rx_skbs[i].skb) { | |
940 | if (i != lp->fbl_count) { | |
941 | lp->rx_skbs[lp->fbl_count].skb = | |
942 | lp->rx_skbs[i].skb; | |
943 | lp->rx_skbs[lp->fbl_count].skb_dma = | |
944 | lp->rx_skbs[i].skb_dma; | |
945 | } | |
946 | lp->fbl_count++; | |
947 | } | |
948 | } | |
949 | for (i = 0; i < RX_BUF_NUM; i++) { | |
950 | if (i >= lp->fbl_count) { | |
951 | lp->fbl_ptr->bd[i].BuffData = 0; | |
952 | lp->fbl_ptr->bd[i].BDCtl = 0; | |
953 | continue; | |
954 | } | |
955 | lp->fbl_ptr->bd[i].BuffData = | |
956 | cpu_to_le32(lp->rx_skbs[i].skb_dma); | |
957 | /* BDID is index of FrFD.bd[] */ | |
958 | lp->fbl_ptr->bd[i].BDCtl = | |
959 | cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) | | |
960 | RX_BUF_SIZE); | |
961 | } | |
962 | ||
963 | printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n", | |
964 | dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr); | |
965 | return 0; | |
966 | } | |
967 | ||
968 | static void | |
969 | tc35815_clear_queues(struct net_device *dev) | |
970 | { | |
971 | struct tc35815_local *lp = netdev_priv(dev); | |
972 | int i; | |
973 | ||
974 | for (i = 0; i < TX_FD_NUM; i++) { | |
975 | u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); | |
976 | struct sk_buff *skb = | |
977 | fdsystem != 0xffffffff ? | |
978 | lp->tx_skbs[fdsystem].skb : NULL; | |
979 | #ifdef DEBUG | |
980 | if (lp->tx_skbs[i].skb != skb) { | |
981 | printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); | |
982 | panic_queues(dev); | |
983 | } | |
984 | #else | |
985 | BUG_ON(lp->tx_skbs[i].skb != skb); | |
986 | #endif | |
987 | if (skb) { | |
988 | pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); | |
989 | lp->tx_skbs[i].skb = NULL; | |
990 | lp->tx_skbs[i].skb_dma = 0; | |
991 | dev_kfree_skb_any(skb); | |
992 | } | |
993 | lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); | |
994 | } | |
995 | ||
996 | tc35815_init_queues(dev); | |
997 | } | |
998 | ||
999 | static void | |
1000 | tc35815_free_queues(struct net_device *dev) | |
1001 | { | |
1002 | struct tc35815_local *lp = netdev_priv(dev); | |
1003 | int i; | |
1004 | ||
1005 | if (lp->tfd_base) { | |
1006 | for (i = 0; i < TX_FD_NUM; i++) { | |
1007 | u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); | |
1008 | struct sk_buff *skb = | |
1009 | fdsystem != 0xffffffff ? | |
1010 | lp->tx_skbs[fdsystem].skb : NULL; | |
1011 | #ifdef DEBUG | |
1012 | if (lp->tx_skbs[i].skb != skb) { | |
1013 | printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); | |
1014 | panic_queues(dev); | |
1015 | } | |
1016 | #else | |
1017 | BUG_ON(lp->tx_skbs[i].skb != skb); | |
1018 | #endif | |
1019 | if (skb) { | |
1020 | pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); | |
1021 | dev_kfree_skb(skb); | |
1022 | lp->tx_skbs[i].skb = NULL; | |
1023 | lp->tx_skbs[i].skb_dma = 0; | |
1024 | } | |
1025 | lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | lp->rfd_base = NULL; | |
1030 | lp->rfd_limit = NULL; | |
1031 | lp->rfd_cur = NULL; | |
1032 | lp->fbl_ptr = NULL; | |
1033 | ||
1034 | for (i = 0; i < RX_BUF_NUM; i++) { | |
1035 | if (lp->rx_skbs[i].skb) { | |
1036 | free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb, | |
1037 | lp->rx_skbs[i].skb_dma); | |
1038 | lp->rx_skbs[i].skb = NULL; | |
1039 | } | |
1040 | } | |
1041 | if (lp->fd_buf) { | |
1042 | pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, | |
1043 | lp->fd_buf, lp->fd_buf_dma); | |
1044 | lp->fd_buf = NULL; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | static void | |
1049 | dump_txfd(struct TxFD *fd) | |
1050 | { | |
1051 | printk("TxFD(%p): %08x %08x %08x %08x\n", fd, | |
1052 | le32_to_cpu(fd->fd.FDNext), | |
1053 | le32_to_cpu(fd->fd.FDSystem), | |
1054 | le32_to_cpu(fd->fd.FDStat), | |
1055 | le32_to_cpu(fd->fd.FDCtl)); | |
1056 | printk("BD: "); | |
1057 | printk(" %08x %08x", | |
1058 | le32_to_cpu(fd->bd.BuffData), | |
1059 | le32_to_cpu(fd->bd.BDCtl)); | |
1060 | printk("\n"); | |
1061 | } | |
1062 | ||
1063 | static int | |
1064 | dump_rxfd(struct RxFD *fd) | |
1065 | { | |
1066 | int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; | |
1067 | if (bd_count > 8) | |
1068 | bd_count = 8; | |
1069 | printk("RxFD(%p): %08x %08x %08x %08x\n", fd, | |
1070 | le32_to_cpu(fd->fd.FDNext), | |
1071 | le32_to_cpu(fd->fd.FDSystem), | |
1072 | le32_to_cpu(fd->fd.FDStat), | |
1073 | le32_to_cpu(fd->fd.FDCtl)); | |
1074 | if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD) | |
1075 | return 0; | |
1076 | printk("BD: "); | |
1077 | for (i = 0; i < bd_count; i++) | |
1078 | printk(" %08x %08x", | |
1079 | le32_to_cpu(fd->bd[i].BuffData), | |
1080 | le32_to_cpu(fd->bd[i].BDCtl)); | |
1081 | printk("\n"); | |
1082 | return bd_count; | |
1083 | } | |
1084 | ||
1085 | #ifdef DEBUG | |
1086 | static void | |
1087 | dump_frfd(struct FrFD *fd) | |
1088 | { | |
1089 | int i; | |
1090 | printk("FrFD(%p): %08x %08x %08x %08x\n", fd, | |
1091 | le32_to_cpu(fd->fd.FDNext), | |
1092 | le32_to_cpu(fd->fd.FDSystem), | |
1093 | le32_to_cpu(fd->fd.FDStat), | |
1094 | le32_to_cpu(fd->fd.FDCtl)); | |
1095 | printk("BD: "); | |
1096 | for (i = 0; i < RX_BUF_NUM; i++) | |
1097 | printk(" %08x %08x", | |
1098 | le32_to_cpu(fd->bd[i].BuffData), | |
1099 | le32_to_cpu(fd->bd[i].BDCtl)); | |
1100 | printk("\n"); | |
1101 | } | |
1102 | ||
1103 | static void | |
1104 | panic_queues(struct net_device *dev) | |
1105 | { | |
1106 | struct tc35815_local *lp = netdev_priv(dev); | |
1107 | int i; | |
1108 | ||
1109 | printk("TxFD base %p, start %u, end %u\n", | |
1110 | lp->tfd_base, lp->tfd_start, lp->tfd_end); | |
1111 | printk("RxFD base %p limit %p cur %p\n", | |
1112 | lp->rfd_base, lp->rfd_limit, lp->rfd_cur); | |
1113 | printk("FrFD %p\n", lp->fbl_ptr); | |
1114 | for (i = 0; i < TX_FD_NUM; i++) | |
1115 | dump_txfd(&lp->tfd_base[i]); | |
1116 | for (i = 0; i < RX_FD_NUM; i++) { | |
1117 | int bd_count = dump_rxfd(&lp->rfd_base[i]); | |
1118 | i += (bd_count + 1) / 2; /* skip BDs */ | |
1119 | } | |
1120 | dump_frfd(lp->fbl_ptr); | |
1121 | panic("%s: Illegal queue state.", dev->name); | |
1122 | } | |
1123 | #endif | |
1124 | ||
1125 | static void print_eth(const u8 *add) | |
1126 | { | |
1127 | printk(KERN_DEBUG "print_eth(%p)\n", add); | |
1128 | printk(KERN_DEBUG " %pM => %pM : %02x%02x\n", | |
1129 | add + 6, add, add[12], add[13]); | |
1130 | } | |
1131 | ||
1132 | static int tc35815_tx_full(struct net_device *dev) | |
1133 | { | |
1134 | struct tc35815_local *lp = netdev_priv(dev); | |
1135 | return (lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end; | |
1136 | } | |
1137 | ||
1138 | static void tc35815_restart(struct net_device *dev) | |
1139 | { | |
1140 | struct tc35815_local *lp = netdev_priv(dev); | |
1141 | int ret; | |
1142 | ||
1143 | if (dev->phydev) { | |
1144 | ret = phy_init_hw(dev->phydev); | |
1145 | if (ret) | |
1146 | printk(KERN_ERR "%s: PHY init failed.\n", dev->name); | |
1147 | } | |
1148 | ||
1149 | spin_lock_bh(&lp->rx_lock); | |
1150 | spin_lock_irq(&lp->lock); | |
1151 | tc35815_chip_reset(dev); | |
1152 | tc35815_clear_queues(dev); | |
1153 | tc35815_chip_init(dev); | |
1154 | /* Reconfigure CAM again since tc35815_chip_init() initialize it. */ | |
1155 | tc35815_set_multicast_list(dev); | |
1156 | spin_unlock_irq(&lp->lock); | |
1157 | spin_unlock_bh(&lp->rx_lock); | |
1158 | ||
1159 | netif_wake_queue(dev); | |
1160 | } | |
1161 | ||
1162 | static void tc35815_restart_work(struct work_struct *work) | |
1163 | { | |
1164 | struct tc35815_local *lp = | |
1165 | container_of(work, struct tc35815_local, restart_work); | |
1166 | struct net_device *dev = lp->dev; | |
1167 | ||
1168 | tc35815_restart(dev); | |
1169 | } | |
1170 | ||
1171 | static void tc35815_schedule_restart(struct net_device *dev) | |
1172 | { | |
1173 | struct tc35815_local *lp = netdev_priv(dev); | |
1174 | struct tc35815_regs __iomem *tr = | |
1175 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1176 | unsigned long flags; | |
1177 | ||
1178 | /* disable interrupts */ | |
1179 | spin_lock_irqsave(&lp->lock, flags); | |
1180 | tc_writel(0, &tr->Int_En); | |
1181 | tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl); | |
1182 | schedule_work(&lp->restart_work); | |
1183 | spin_unlock_irqrestore(&lp->lock, flags); | |
1184 | } | |
1185 | ||
1186 | static void tc35815_tx_timeout(struct net_device *dev) | |
1187 | { | |
1188 | struct tc35815_regs __iomem *tr = | |
1189 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1190 | ||
1191 | printk(KERN_WARNING "%s: transmit timed out, status %#x\n", | |
1192 | dev->name, tc_readl(&tr->Tx_Stat)); | |
1193 | ||
1194 | /* Try to restart the adaptor. */ | |
1195 | tc35815_schedule_restart(dev); | |
1196 | dev->stats.tx_errors++; | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Open/initialize the controller. This is called (in the current kernel) | |
1201 | * sometime after booting when the 'ifconfig' program is run. | |
1202 | * | |
1203 | * This routine should set everything up anew at each open, even | |
1204 | * registers that "should" only need to be set once at boot, so that | |
1205 | * there is non-reboot way to recover if something goes wrong. | |
1206 | */ | |
1207 | static int | |
1208 | tc35815_open(struct net_device *dev) | |
1209 | { | |
1210 | struct tc35815_local *lp = netdev_priv(dev); | |
1211 | ||
1212 | /* | |
1213 | * This is used if the interrupt line can turned off (shared). | |
1214 | * See 3c503.c for an example of selecting the IRQ at config-time. | |
1215 | */ | |
1216 | if (request_irq(dev->irq, tc35815_interrupt, IRQF_SHARED, | |
1217 | dev->name, dev)) | |
1218 | return -EAGAIN; | |
1219 | ||
1220 | tc35815_chip_reset(dev); | |
1221 | ||
1222 | if (tc35815_init_queues(dev) != 0) { | |
1223 | free_irq(dev->irq, dev); | |
1224 | return -EAGAIN; | |
1225 | } | |
1226 | ||
1227 | napi_enable(&lp->napi); | |
1228 | ||
1229 | /* Reset the hardware here. Don't forget to set the station address. */ | |
1230 | spin_lock_irq(&lp->lock); | |
1231 | tc35815_chip_init(dev); | |
1232 | spin_unlock_irq(&lp->lock); | |
1233 | ||
1234 | netif_carrier_off(dev); | |
1235 | /* schedule a link state check */ | |
1236 | phy_start(dev->phydev); | |
1237 | ||
1238 | /* We are now ready to accept transmit requeusts from | |
1239 | * the queueing layer of the networking. | |
1240 | */ | |
1241 | netif_start_queue(dev); | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | /* This will only be invoked if your driver is _not_ in XOFF state. | |
1247 | * What this means is that you need not check it, and that this | |
1248 | * invariant will hold if you make sure that the netif_*_queue() | |
1249 | * calls are done at the proper times. | |
1250 | */ | |
1251 | static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1252 | { | |
1253 | struct tc35815_local *lp = netdev_priv(dev); | |
1254 | struct TxFD *txfd; | |
1255 | unsigned long flags; | |
1256 | ||
1257 | /* If some error occurs while trying to transmit this | |
1258 | * packet, you should return '1' from this function. | |
1259 | * In such a case you _may not_ do anything to the | |
1260 | * SKB, it is still owned by the network queueing | |
1261 | * layer when an error is returned. This means you | |
1262 | * may not modify any SKB fields, you may not free | |
1263 | * the SKB, etc. | |
1264 | */ | |
1265 | ||
1266 | /* This is the most common case for modern hardware. | |
1267 | * The spinlock protects this code from the TX complete | |
1268 | * hardware interrupt handler. Queue flow control is | |
1269 | * thus managed under this lock as well. | |
1270 | */ | |
1271 | spin_lock_irqsave(&lp->lock, flags); | |
1272 | ||
1273 | /* failsafe... (handle txdone now if half of FDs are used) */ | |
1274 | if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM > | |
1275 | TX_FD_NUM / 2) | |
1276 | tc35815_txdone(dev); | |
1277 | ||
1278 | if (netif_msg_pktdata(lp)) | |
1279 | print_eth(skb->data); | |
1280 | #ifdef DEBUG | |
1281 | if (lp->tx_skbs[lp->tfd_start].skb) { | |
1282 | printk("%s: tx_skbs conflict.\n", dev->name); | |
1283 | panic_queues(dev); | |
1284 | } | |
1285 | #else | |
1286 | BUG_ON(lp->tx_skbs[lp->tfd_start].skb); | |
1287 | #endif | |
1288 | lp->tx_skbs[lp->tfd_start].skb = skb; | |
1289 | lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); | |
1290 | ||
1291 | /*add to ring */ | |
1292 | txfd = &lp->tfd_base[lp->tfd_start]; | |
1293 | txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma); | |
1294 | txfd->bd.BDCtl = cpu_to_le32(skb->len); | |
1295 | txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start); | |
1296 | txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT)); | |
1297 | ||
1298 | if (lp->tfd_start == lp->tfd_end) { | |
1299 | struct tc35815_regs __iomem *tr = | |
1300 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1301 | /* Start DMA Transmitter. */ | |
1302 | txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL); | |
1303 | txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); | |
1304 | if (netif_msg_tx_queued(lp)) { | |
1305 | printk("%s: starting TxFD.\n", dev->name); | |
1306 | dump_txfd(txfd); | |
1307 | } | |
1308 | tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); | |
1309 | } else { | |
1310 | txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL); | |
1311 | if (netif_msg_tx_queued(lp)) { | |
1312 | printk("%s: queueing TxFD.\n", dev->name); | |
1313 | dump_txfd(txfd); | |
1314 | } | |
1315 | } | |
1316 | lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM; | |
1317 | ||
1318 | /* If we just used up the very last entry in the | |
1319 | * TX ring on this device, tell the queueing | |
1320 | * layer to send no more. | |
1321 | */ | |
1322 | if (tc35815_tx_full(dev)) { | |
1323 | if (netif_msg_tx_queued(lp)) | |
1324 | printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name); | |
1325 | netif_stop_queue(dev); | |
1326 | } | |
1327 | ||
1328 | /* When the TX completion hw interrupt arrives, this | |
1329 | * is when the transmit statistics are updated. | |
1330 | */ | |
1331 | ||
1332 | spin_unlock_irqrestore(&lp->lock, flags); | |
1333 | return NETDEV_TX_OK; | |
1334 | } | |
1335 | ||
1336 | #define FATAL_ERROR_INT \ | |
1337 | (Int_IntPCI | Int_DmParErr | Int_IntNRAbt) | |
1338 | static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status) | |
1339 | { | |
1340 | static int count; | |
1341 | printk(KERN_WARNING "%s: Fatal Error Interrupt (%#x):", | |
1342 | dev->name, status); | |
1343 | if (status & Int_IntPCI) | |
1344 | printk(" IntPCI"); | |
1345 | if (status & Int_DmParErr) | |
1346 | printk(" DmParErr"); | |
1347 | if (status & Int_IntNRAbt) | |
1348 | printk(" IntNRAbt"); | |
1349 | printk("\n"); | |
1350 | if (count++ > 100) | |
1351 | panic("%s: Too many fatal errors.", dev->name); | |
1352 | printk(KERN_WARNING "%s: Resetting ...\n", dev->name); | |
1353 | /* Try to restart the adaptor. */ | |
1354 | tc35815_schedule_restart(dev); | |
1355 | } | |
1356 | ||
1357 | static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit) | |
1358 | { | |
1359 | struct tc35815_local *lp = netdev_priv(dev); | |
1360 | int ret = -1; | |
1361 | ||
1362 | /* Fatal errors... */ | |
1363 | if (status & FATAL_ERROR_INT) { | |
1364 | tc35815_fatal_error_interrupt(dev, status); | |
1365 | return 0; | |
1366 | } | |
1367 | /* recoverable errors */ | |
1368 | if (status & Int_IntFDAEx) { | |
1369 | if (netif_msg_rx_err(lp)) | |
1370 | dev_warn(&dev->dev, | |
1371 | "Free Descriptor Area Exhausted (%#x).\n", | |
1372 | status); | |
1373 | dev->stats.rx_dropped++; | |
1374 | ret = 0; | |
1375 | } | |
1376 | if (status & Int_IntBLEx) { | |
1377 | if (netif_msg_rx_err(lp)) | |
1378 | dev_warn(&dev->dev, | |
1379 | "Buffer List Exhausted (%#x).\n", | |
1380 | status); | |
1381 | dev->stats.rx_dropped++; | |
1382 | ret = 0; | |
1383 | } | |
1384 | if (status & Int_IntExBD) { | |
1385 | if (netif_msg_rx_err(lp)) | |
1386 | dev_warn(&dev->dev, | |
1387 | "Excessive Buffer Descriptors (%#x).\n", | |
1388 | status); | |
1389 | dev->stats.rx_length_errors++; | |
1390 | ret = 0; | |
1391 | } | |
1392 | ||
1393 | /* normal notification */ | |
1394 | if (status & Int_IntMacRx) { | |
1395 | /* Got a packet(s). */ | |
1396 | ret = tc35815_rx(dev, limit); | |
1397 | lp->lstats.rx_ints++; | |
1398 | } | |
1399 | if (status & Int_IntMacTx) { | |
1400 | /* Transmit complete. */ | |
1401 | lp->lstats.tx_ints++; | |
1402 | spin_lock_irq(&lp->lock); | |
1403 | tc35815_txdone(dev); | |
1404 | spin_unlock_irq(&lp->lock); | |
1405 | if (ret < 0) | |
1406 | ret = 0; | |
1407 | } | |
1408 | return ret; | |
1409 | } | |
1410 | ||
1411 | /* | |
1412 | * The typical workload of the driver: | |
1413 | * Handle the network interface interrupts. | |
1414 | */ | |
1415 | static irqreturn_t tc35815_interrupt(int irq, void *dev_id) | |
1416 | { | |
1417 | struct net_device *dev = dev_id; | |
1418 | struct tc35815_local *lp = netdev_priv(dev); | |
1419 | struct tc35815_regs __iomem *tr = | |
1420 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1421 | u32 dmactl = tc_readl(&tr->DMA_Ctl); | |
1422 | ||
1423 | if (!(dmactl & DMA_IntMask)) { | |
1424 | /* disable interrupts */ | |
1425 | tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl); | |
1426 | if (napi_schedule_prep(&lp->napi)) | |
1427 | __napi_schedule(&lp->napi); | |
1428 | else { | |
1429 | printk(KERN_ERR "%s: interrupt taken in poll\n", | |
1430 | dev->name); | |
1431 | BUG(); | |
1432 | } | |
1433 | (void)tc_readl(&tr->Int_Src); /* flush */ | |
1434 | return IRQ_HANDLED; | |
1435 | } | |
1436 | return IRQ_NONE; | |
1437 | } | |
1438 | ||
1439 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1440 | static void tc35815_poll_controller(struct net_device *dev) | |
1441 | { | |
1442 | disable_irq(dev->irq); | |
1443 | tc35815_interrupt(dev->irq, dev); | |
1444 | enable_irq(dev->irq); | |
1445 | } | |
1446 | #endif | |
1447 | ||
1448 | /* We have a good packet(s), get it/them out of the buffers. */ | |
1449 | static int | |
1450 | tc35815_rx(struct net_device *dev, int limit) | |
1451 | { | |
1452 | struct tc35815_local *lp = netdev_priv(dev); | |
1453 | unsigned int fdctl; | |
1454 | int i; | |
1455 | int received = 0; | |
1456 | ||
1457 | while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) { | |
1458 | int status = le32_to_cpu(lp->rfd_cur->fd.FDStat); | |
1459 | int pkt_len = fdctl & FD_FDLength_MASK; | |
1460 | int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; | |
1461 | #ifdef DEBUG | |
1462 | struct RxFD *next_rfd; | |
1463 | #endif | |
1464 | #if (RX_CTL_CMD & Rx_StripCRC) == 0 | |
1465 | pkt_len -= ETH_FCS_LEN; | |
1466 | #endif | |
1467 | ||
1468 | if (netif_msg_rx_status(lp)) | |
1469 | dump_rxfd(lp->rfd_cur); | |
1470 | if (status & Rx_Good) { | |
1471 | struct sk_buff *skb; | |
1472 | unsigned char *data; | |
1473 | int cur_bd; | |
1474 | ||
1475 | if (--limit < 0) | |
1476 | break; | |
1477 | BUG_ON(bd_count > 1); | |
1478 | cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl) | |
1479 | & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; | |
1480 | #ifdef DEBUG | |
1481 | if (cur_bd >= RX_BUF_NUM) { | |
1482 | printk("%s: invalid BDID.\n", dev->name); | |
1483 | panic_queues(dev); | |
1484 | } | |
1485 | BUG_ON(lp->rx_skbs[cur_bd].skb_dma != | |
1486 | (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3)); | |
1487 | if (!lp->rx_skbs[cur_bd].skb) { | |
1488 | printk("%s: NULL skb.\n", dev->name); | |
1489 | panic_queues(dev); | |
1490 | } | |
1491 | #else | |
1492 | BUG_ON(cur_bd >= RX_BUF_NUM); | |
1493 | #endif | |
1494 | skb = lp->rx_skbs[cur_bd].skb; | |
1495 | prefetch(skb->data); | |
1496 | lp->rx_skbs[cur_bd].skb = NULL; | |
1497 | pci_unmap_single(lp->pci_dev, | |
1498 | lp->rx_skbs[cur_bd].skb_dma, | |
1499 | RX_BUF_SIZE, PCI_DMA_FROMDEVICE); | |
1500 | if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN) | |
1501 | memmove(skb->data, skb->data - NET_IP_ALIGN, | |
1502 | pkt_len); | |
1503 | data = skb_put(skb, pkt_len); | |
1504 | if (netif_msg_pktdata(lp)) | |
1505 | print_eth(data); | |
1506 | skb->protocol = eth_type_trans(skb, dev); | |
1507 | netif_receive_skb(skb); | |
1508 | received++; | |
1509 | dev->stats.rx_packets++; | |
1510 | dev->stats.rx_bytes += pkt_len; | |
1511 | } else { | |
1512 | dev->stats.rx_errors++; | |
1513 | if (netif_msg_rx_err(lp)) | |
1514 | dev_info(&dev->dev, "Rx error (status %x)\n", | |
1515 | status & Rx_Stat_Mask); | |
1516 | /* WORKAROUND: LongErr and CRCErr means Overflow. */ | |
1517 | if ((status & Rx_LongErr) && (status & Rx_CRCErr)) { | |
1518 | status &= ~(Rx_LongErr|Rx_CRCErr); | |
1519 | status |= Rx_Over; | |
1520 | } | |
1521 | if (status & Rx_LongErr) | |
1522 | dev->stats.rx_length_errors++; | |
1523 | if (status & Rx_Over) | |
1524 | dev->stats.rx_fifo_errors++; | |
1525 | if (status & Rx_CRCErr) | |
1526 | dev->stats.rx_crc_errors++; | |
1527 | if (status & Rx_Align) | |
1528 | dev->stats.rx_frame_errors++; | |
1529 | } | |
1530 | ||
1531 | if (bd_count > 0) { | |
1532 | /* put Free Buffer back to controller */ | |
1533 | int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl); | |
1534 | unsigned char id = | |
1535 | (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; | |
1536 | #ifdef DEBUG | |
1537 | if (id >= RX_BUF_NUM) { | |
1538 | printk("%s: invalid BDID.\n", dev->name); | |
1539 | panic_queues(dev); | |
1540 | } | |
1541 | #else | |
1542 | BUG_ON(id >= RX_BUF_NUM); | |
1543 | #endif | |
1544 | /* free old buffers */ | |
1545 | lp->fbl_count--; | |
1546 | while (lp->fbl_count < RX_BUF_NUM) | |
1547 | { | |
1548 | unsigned char curid = | |
1549 | (id + 1 + lp->fbl_count) % RX_BUF_NUM; | |
1550 | struct BDesc *bd = &lp->fbl_ptr->bd[curid]; | |
1551 | #ifdef DEBUG | |
1552 | bdctl = le32_to_cpu(bd->BDCtl); | |
1553 | if (bdctl & BD_CownsBD) { | |
1554 | printk("%s: Freeing invalid BD.\n", | |
1555 | dev->name); | |
1556 | panic_queues(dev); | |
1557 | } | |
1558 | #endif | |
1559 | /* pass BD to controller */ | |
1560 | if (!lp->rx_skbs[curid].skb) { | |
1561 | lp->rx_skbs[curid].skb = | |
1562 | alloc_rxbuf_skb(dev, | |
1563 | lp->pci_dev, | |
1564 | &lp->rx_skbs[curid].skb_dma); | |
1565 | if (!lp->rx_skbs[curid].skb) | |
1566 | break; /* try on next reception */ | |
1567 | bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma); | |
1568 | } | |
1569 | /* Note: BDLength was modified by chip. */ | |
1570 | bd->BDCtl = cpu_to_le32(BD_CownsBD | | |
1571 | (curid << BD_RxBDID_SHIFT) | | |
1572 | RX_BUF_SIZE); | |
1573 | lp->fbl_count++; | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | /* put RxFD back to controller */ | |
1578 | #ifdef DEBUG | |
1579 | next_rfd = fd_bus_to_virt(lp, | |
1580 | le32_to_cpu(lp->rfd_cur->fd.FDNext)); | |
1581 | if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) { | |
1582 | printk("%s: RxFD FDNext invalid.\n", dev->name); | |
1583 | panic_queues(dev); | |
1584 | } | |
1585 | #endif | |
1586 | for (i = 0; i < (bd_count + 1) / 2 + 1; i++) { | |
1587 | /* pass FD to controller */ | |
1588 | #ifdef DEBUG | |
1589 | lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead); | |
1590 | #else | |
1591 | lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL); | |
1592 | #endif | |
1593 | lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD); | |
1594 | lp->rfd_cur++; | |
1595 | } | |
1596 | if (lp->rfd_cur > lp->rfd_limit) | |
1597 | lp->rfd_cur = lp->rfd_base; | |
1598 | #ifdef DEBUG | |
1599 | if (lp->rfd_cur != next_rfd) | |
1600 | printk("rfd_cur = %p, next_rfd %p\n", | |
1601 | lp->rfd_cur, next_rfd); | |
1602 | #endif | |
1603 | } | |
1604 | ||
1605 | return received; | |
1606 | } | |
1607 | ||
1608 | static int tc35815_poll(struct napi_struct *napi, int budget) | |
1609 | { | |
1610 | struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi); | |
1611 | struct net_device *dev = lp->dev; | |
1612 | struct tc35815_regs __iomem *tr = | |
1613 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1614 | int received = 0, handled; | |
1615 | u32 status; | |
1616 | ||
1617 | if (budget <= 0) | |
1618 | return received; | |
1619 | ||
1620 | spin_lock(&lp->rx_lock); | |
1621 | status = tc_readl(&tr->Int_Src); | |
1622 | do { | |
1623 | /* BLEx, FDAEx will be cleared later */ | |
1624 | tc_writel(status & ~(Int_BLEx | Int_FDAEx), | |
1625 | &tr->Int_Src); /* write to clear */ | |
1626 | ||
1627 | handled = tc35815_do_interrupt(dev, status, budget - received); | |
1628 | if (status & (Int_BLEx | Int_FDAEx)) | |
1629 | tc_writel(status & (Int_BLEx | Int_FDAEx), | |
1630 | &tr->Int_Src); | |
1631 | if (handled >= 0) { | |
1632 | received += handled; | |
1633 | if (received >= budget) | |
1634 | break; | |
1635 | } | |
1636 | status = tc_readl(&tr->Int_Src); | |
1637 | } while (status); | |
1638 | spin_unlock(&lp->rx_lock); | |
1639 | ||
1640 | if (received < budget) { | |
1641 | napi_complete_done(napi, received); | |
1642 | /* enable interrupts */ | |
1643 | tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl); | |
1644 | } | |
1645 | return received; | |
1646 | } | |
1647 | ||
1648 | #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr) | |
1649 | ||
1650 | static void | |
1651 | tc35815_check_tx_stat(struct net_device *dev, int status) | |
1652 | { | |
1653 | struct tc35815_local *lp = netdev_priv(dev); | |
1654 | const char *msg = NULL; | |
1655 | ||
1656 | /* count collisions */ | |
1657 | if (status & Tx_ExColl) | |
1658 | dev->stats.collisions += 16; | |
1659 | if (status & Tx_TxColl_MASK) | |
1660 | dev->stats.collisions += status & Tx_TxColl_MASK; | |
1661 | ||
1662 | /* TX4939 does not have NCarr */ | |
1663 | if (lp->chiptype == TC35815_TX4939) | |
1664 | status &= ~Tx_NCarr; | |
1665 | /* WORKAROUND: ignore LostCrS in full duplex operation */ | |
1666 | if (!lp->link || lp->duplex == DUPLEX_FULL) | |
1667 | status &= ~Tx_NCarr; | |
1668 | ||
1669 | if (!(status & TX_STA_ERR)) { | |
1670 | /* no error. */ | |
1671 | dev->stats.tx_packets++; | |
1672 | return; | |
1673 | } | |
1674 | ||
1675 | dev->stats.tx_errors++; | |
1676 | if (status & Tx_ExColl) { | |
1677 | dev->stats.tx_aborted_errors++; | |
1678 | msg = "Excessive Collision."; | |
1679 | } | |
1680 | if (status & Tx_Under) { | |
1681 | dev->stats.tx_fifo_errors++; | |
1682 | msg = "Tx FIFO Underrun."; | |
1683 | if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) { | |
1684 | lp->lstats.tx_underrun++; | |
1685 | if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) { | |
1686 | struct tc35815_regs __iomem *tr = | |
1687 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1688 | tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh); | |
1689 | msg = "Tx FIFO Underrun.Change Tx threshold to max."; | |
1690 | } | |
1691 | } | |
1692 | } | |
1693 | if (status & Tx_Defer) { | |
1694 | dev->stats.tx_fifo_errors++; | |
1695 | msg = "Excessive Deferral."; | |
1696 | } | |
1697 | if (status & Tx_NCarr) { | |
1698 | dev->stats.tx_carrier_errors++; | |
1699 | msg = "Lost Carrier Sense."; | |
1700 | } | |
1701 | if (status & Tx_LateColl) { | |
1702 | dev->stats.tx_aborted_errors++; | |
1703 | msg = "Late Collision."; | |
1704 | } | |
1705 | if (status & Tx_TxPar) { | |
1706 | dev->stats.tx_fifo_errors++; | |
1707 | msg = "Transmit Parity Error."; | |
1708 | } | |
1709 | if (status & Tx_SQErr) { | |
1710 | dev->stats.tx_heartbeat_errors++; | |
1711 | msg = "Signal Quality Error."; | |
1712 | } | |
1713 | if (msg && netif_msg_tx_err(lp)) | |
1714 | printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status); | |
1715 | } | |
1716 | ||
1717 | /* This handles TX complete events posted by the device | |
1718 | * via interrupts. | |
1719 | */ | |
1720 | static void | |
1721 | tc35815_txdone(struct net_device *dev) | |
1722 | { | |
1723 | struct tc35815_local *lp = netdev_priv(dev); | |
1724 | struct TxFD *txfd; | |
1725 | unsigned int fdctl; | |
1726 | ||
1727 | txfd = &lp->tfd_base[lp->tfd_end]; | |
1728 | while (lp->tfd_start != lp->tfd_end && | |
1729 | !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) { | |
1730 | int status = le32_to_cpu(txfd->fd.FDStat); | |
1731 | struct sk_buff *skb; | |
1732 | unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext); | |
1733 | u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem); | |
1734 | ||
1735 | if (netif_msg_tx_done(lp)) { | |
1736 | printk("%s: complete TxFD.\n", dev->name); | |
1737 | dump_txfd(txfd); | |
1738 | } | |
1739 | tc35815_check_tx_stat(dev, status); | |
1740 | ||
1741 | skb = fdsystem != 0xffffffff ? | |
1742 | lp->tx_skbs[fdsystem].skb : NULL; | |
1743 | #ifdef DEBUG | |
1744 | if (lp->tx_skbs[lp->tfd_end].skb != skb) { | |
1745 | printk("%s: tx_skbs mismatch.\n", dev->name); | |
1746 | panic_queues(dev); | |
1747 | } | |
1748 | #else | |
1749 | BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb); | |
1750 | #endif | |
1751 | if (skb) { | |
1752 | dev->stats.tx_bytes += skb->len; | |
1753 | pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE); | |
1754 | lp->tx_skbs[lp->tfd_end].skb = NULL; | |
1755 | lp->tx_skbs[lp->tfd_end].skb_dma = 0; | |
1756 | dev_kfree_skb_any(skb); | |
1757 | } | |
1758 | txfd->fd.FDSystem = cpu_to_le32(0xffffffff); | |
1759 | ||
1760 | lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM; | |
1761 | txfd = &lp->tfd_base[lp->tfd_end]; | |
1762 | #ifdef DEBUG | |
1763 | if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) { | |
1764 | printk("%s: TxFD FDNext invalid.\n", dev->name); | |
1765 | panic_queues(dev); | |
1766 | } | |
1767 | #endif | |
1768 | if (fdnext & FD_Next_EOL) { | |
1769 | /* DMA Transmitter has been stopping... */ | |
1770 | if (lp->tfd_end != lp->tfd_start) { | |
1771 | struct tc35815_regs __iomem *tr = | |
1772 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1773 | int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM; | |
1774 | struct TxFD *txhead = &lp->tfd_base[head]; | |
1775 | int qlen = (lp->tfd_start + TX_FD_NUM | |
1776 | - lp->tfd_end) % TX_FD_NUM; | |
1777 | ||
1778 | #ifdef DEBUG | |
1779 | if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) { | |
1780 | printk("%s: TxFD FDCtl invalid.\n", dev->name); | |
1781 | panic_queues(dev); | |
1782 | } | |
1783 | #endif | |
1784 | /* log max queue length */ | |
1785 | if (lp->lstats.max_tx_qlen < qlen) | |
1786 | lp->lstats.max_tx_qlen = qlen; | |
1787 | ||
1788 | ||
1789 | /* start DMA Transmitter again */ | |
1790 | txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL); | |
1791 | txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); | |
1792 | if (netif_msg_tx_queued(lp)) { | |
1793 | printk("%s: start TxFD on queue.\n", | |
1794 | dev->name); | |
1795 | dump_txfd(txfd); | |
1796 | } | |
1797 | tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); | |
1798 | } | |
1799 | break; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | /* If we had stopped the queue due to a "tx full" | |
1804 | * condition, and space has now been made available, | |
1805 | * wake up the queue. | |
1806 | */ | |
1807 | if (netif_queue_stopped(dev) && !tc35815_tx_full(dev)) | |
1808 | netif_wake_queue(dev); | |
1809 | } | |
1810 | ||
1811 | /* The inverse routine to tc35815_open(). */ | |
1812 | static int | |
1813 | tc35815_close(struct net_device *dev) | |
1814 | { | |
1815 | struct tc35815_local *lp = netdev_priv(dev); | |
1816 | ||
1817 | netif_stop_queue(dev); | |
1818 | napi_disable(&lp->napi); | |
1819 | if (dev->phydev) | |
1820 | phy_stop(dev->phydev); | |
1821 | cancel_work_sync(&lp->restart_work); | |
1822 | ||
1823 | /* Flush the Tx and disable Rx here. */ | |
1824 | tc35815_chip_reset(dev); | |
1825 | free_irq(dev->irq, dev); | |
1826 | ||
1827 | tc35815_free_queues(dev); | |
1828 | ||
1829 | return 0; | |
1830 | ||
1831 | } | |
1832 | ||
1833 | /* | |
1834 | * Get the current statistics. | |
1835 | * This may be called with the card open or closed. | |
1836 | */ | |
1837 | static struct net_device_stats *tc35815_get_stats(struct net_device *dev) | |
1838 | { | |
1839 | struct tc35815_regs __iomem *tr = | |
1840 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1841 | if (netif_running(dev)) | |
1842 | /* Update the statistics from the device registers. */ | |
1843 | dev->stats.rx_missed_errors += tc_readl(&tr->Miss_Cnt); | |
1844 | ||
1845 | return &dev->stats; | |
1846 | } | |
1847 | ||
1848 | static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr) | |
1849 | { | |
1850 | struct tc35815_local *lp = netdev_priv(dev); | |
1851 | struct tc35815_regs __iomem *tr = | |
1852 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1853 | int cam_index = index * 6; | |
1854 | u32 cam_data; | |
1855 | u32 saved_addr; | |
1856 | ||
1857 | saved_addr = tc_readl(&tr->CAM_Adr); | |
1858 | ||
1859 | if (netif_msg_hw(lp)) | |
1860 | printk(KERN_DEBUG "%s: CAM %d: %pM\n", | |
1861 | dev->name, index, addr); | |
1862 | if (index & 1) { | |
1863 | /* read modify write */ | |
1864 | tc_writel(cam_index - 2, &tr->CAM_Adr); | |
1865 | cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000; | |
1866 | cam_data |= addr[0] << 8 | addr[1]; | |
1867 | tc_writel(cam_data, &tr->CAM_Data); | |
1868 | /* write whole word */ | |
1869 | tc_writel(cam_index + 2, &tr->CAM_Adr); | |
1870 | cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5]; | |
1871 | tc_writel(cam_data, &tr->CAM_Data); | |
1872 | } else { | |
1873 | /* write whole word */ | |
1874 | tc_writel(cam_index, &tr->CAM_Adr); | |
1875 | cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; | |
1876 | tc_writel(cam_data, &tr->CAM_Data); | |
1877 | /* read modify write */ | |
1878 | tc_writel(cam_index + 4, &tr->CAM_Adr); | |
1879 | cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff; | |
1880 | cam_data |= addr[4] << 24 | (addr[5] << 16); | |
1881 | tc_writel(cam_data, &tr->CAM_Data); | |
1882 | } | |
1883 | ||
1884 | tc_writel(saved_addr, &tr->CAM_Adr); | |
1885 | } | |
1886 | ||
1887 | ||
1888 | /* | |
1889 | * Set or clear the multicast filter for this adaptor. | |
1890 | * num_addrs == -1 Promiscuous mode, receive all packets | |
1891 | * num_addrs == 0 Normal mode, clear multicast list | |
1892 | * num_addrs > 0 Multicast mode, receive normal and MC packets, | |
1893 | * and do best-effort filtering. | |
1894 | */ | |
1895 | static void | |
1896 | tc35815_set_multicast_list(struct net_device *dev) | |
1897 | { | |
1898 | struct tc35815_regs __iomem *tr = | |
1899 | (struct tc35815_regs __iomem *)dev->base_addr; | |
1900 | ||
1901 | if (dev->flags & IFF_PROMISC) { | |
1902 | /* With some (all?) 100MHalf HUB, controller will hang | |
1903 | * if we enabled promiscuous mode before linkup... */ | |
1904 | struct tc35815_local *lp = netdev_priv(dev); | |
1905 | ||
1906 | if (!lp->link) | |
1907 | return; | |
1908 | /* Enable promiscuous mode */ | |
1909 | tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl); | |
1910 | } else if ((dev->flags & IFF_ALLMULTI) || | |
1911 | netdev_mc_count(dev) > CAM_ENTRY_MAX - 3) { | |
1912 | /* CAM 0, 1, 20 are reserved. */ | |
1913 | /* Disable promiscuous mode, use normal mode. */ | |
1914 | tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl); | |
1915 | } else if (!netdev_mc_empty(dev)) { | |
1916 | struct netdev_hw_addr *ha; | |
1917 | int i; | |
1918 | int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE); | |
1919 | ||
1920 | tc_writel(0, &tr->CAM_Ctl); | |
1921 | /* Walk the address list, and load the filter */ | |
1922 | i = 0; | |
1923 | netdev_for_each_mc_addr(ha, dev) { | |
1924 | /* entry 0,1 is reserved. */ | |
1925 | tc35815_set_cam_entry(dev, i + 2, ha->addr); | |
1926 | ena_bits |= CAM_Ena_Bit(i + 2); | |
1927 | i++; | |
1928 | } | |
1929 | tc_writel(ena_bits, &tr->CAM_Ena); | |
1930 | tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); | |
1931 | } else { | |
1932 | tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); | |
1933 | tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1938 | { | |
1939 | struct tc35815_local *lp = netdev_priv(dev); | |
1940 | ||
1941 | strlcpy(info->driver, MODNAME, sizeof(info->driver)); | |
1942 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
1943 | strlcpy(info->bus_info, pci_name(lp->pci_dev), sizeof(info->bus_info)); | |
1944 | } | |
1945 | ||
1946 | static u32 tc35815_get_msglevel(struct net_device *dev) | |
1947 | { | |
1948 | struct tc35815_local *lp = netdev_priv(dev); | |
1949 | return lp->msg_enable; | |
1950 | } | |
1951 | ||
1952 | static void tc35815_set_msglevel(struct net_device *dev, u32 datum) | |
1953 | { | |
1954 | struct tc35815_local *lp = netdev_priv(dev); | |
1955 | lp->msg_enable = datum; | |
1956 | } | |
1957 | ||
1958 | static int tc35815_get_sset_count(struct net_device *dev, int sset) | |
1959 | { | |
1960 | struct tc35815_local *lp = netdev_priv(dev); | |
1961 | ||
1962 | switch (sset) { | |
1963 | case ETH_SS_STATS: | |
1964 | return sizeof(lp->lstats) / sizeof(int); | |
1965 | default: | |
1966 | return -EOPNOTSUPP; | |
1967 | } | |
1968 | } | |
1969 | ||
1970 | static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) | |
1971 | { | |
1972 | struct tc35815_local *lp = netdev_priv(dev); | |
1973 | data[0] = lp->lstats.max_tx_qlen; | |
1974 | data[1] = lp->lstats.tx_ints; | |
1975 | data[2] = lp->lstats.rx_ints; | |
1976 | data[3] = lp->lstats.tx_underrun; | |
1977 | } | |
1978 | ||
1979 | static struct { | |
1980 | const char str[ETH_GSTRING_LEN]; | |
1981 | } ethtool_stats_keys[] = { | |
1982 | { "max_tx_qlen" }, | |
1983 | { "tx_ints" }, | |
1984 | { "rx_ints" }, | |
1985 | { "tx_underrun" }, | |
1986 | }; | |
1987 | ||
1988 | static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
1989 | { | |
1990 | memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); | |
1991 | } | |
1992 | ||
1993 | static const struct ethtool_ops tc35815_ethtool_ops = { | |
1994 | .get_drvinfo = tc35815_get_drvinfo, | |
1995 | .get_link = ethtool_op_get_link, | |
1996 | .get_msglevel = tc35815_get_msglevel, | |
1997 | .set_msglevel = tc35815_set_msglevel, | |
1998 | .get_strings = tc35815_get_strings, | |
1999 | .get_sset_count = tc35815_get_sset_count, | |
2000 | .get_ethtool_stats = tc35815_get_ethtool_stats, | |
2001 | .get_link_ksettings = phy_ethtool_get_link_ksettings, | |
2002 | .set_link_ksettings = phy_ethtool_set_link_ksettings, | |
2003 | }; | |
2004 | ||
2005 | static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
2006 | { | |
2007 | if (!netif_running(dev)) | |
2008 | return -EINVAL; | |
2009 | if (!dev->phydev) | |
2010 | return -ENODEV; | |
2011 | return phy_mii_ioctl(dev->phydev, rq, cmd); | |
2012 | } | |
2013 | ||
2014 | static void tc35815_chip_reset(struct net_device *dev) | |
2015 | { | |
2016 | struct tc35815_regs __iomem *tr = | |
2017 | (struct tc35815_regs __iomem *)dev->base_addr; | |
2018 | int i; | |
2019 | /* reset the controller */ | |
2020 | tc_writel(MAC_Reset, &tr->MAC_Ctl); | |
2021 | udelay(4); /* 3200ns */ | |
2022 | i = 0; | |
2023 | while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) { | |
2024 | if (i++ > 100) { | |
2025 | printk(KERN_ERR "%s: MAC reset failed.\n", dev->name); | |
2026 | break; | |
2027 | } | |
2028 | mdelay(1); | |
2029 | } | |
2030 | tc_writel(0, &tr->MAC_Ctl); | |
2031 | ||
2032 | /* initialize registers to default value */ | |
2033 | tc_writel(0, &tr->DMA_Ctl); | |
2034 | tc_writel(0, &tr->TxThrsh); | |
2035 | tc_writel(0, &tr->TxPollCtr); | |
2036 | tc_writel(0, &tr->RxFragSize); | |
2037 | tc_writel(0, &tr->Int_En); | |
2038 | tc_writel(0, &tr->FDA_Bas); | |
2039 | tc_writel(0, &tr->FDA_Lim); | |
2040 | tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */ | |
2041 | tc_writel(0, &tr->CAM_Ctl); | |
2042 | tc_writel(0, &tr->Tx_Ctl); | |
2043 | tc_writel(0, &tr->Rx_Ctl); | |
2044 | tc_writel(0, &tr->CAM_Ena); | |
2045 | (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */ | |
2046 | ||
2047 | /* initialize internal SRAM */ | |
2048 | tc_writel(DMA_TestMode, &tr->DMA_Ctl); | |
2049 | for (i = 0; i < 0x1000; i += 4) { | |
2050 | tc_writel(i, &tr->CAM_Adr); | |
2051 | tc_writel(0, &tr->CAM_Data); | |
2052 | } | |
2053 | tc_writel(0, &tr->DMA_Ctl); | |
2054 | } | |
2055 | ||
2056 | static void tc35815_chip_init(struct net_device *dev) | |
2057 | { | |
2058 | struct tc35815_local *lp = netdev_priv(dev); | |
2059 | struct tc35815_regs __iomem *tr = | |
2060 | (struct tc35815_regs __iomem *)dev->base_addr; | |
2061 | unsigned long txctl = TX_CTL_CMD; | |
2062 | ||
2063 | /* load station address to CAM */ | |
2064 | tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr); | |
2065 | ||
2066 | /* Enable CAM (broadcast and unicast) */ | |
2067 | tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); | |
2068 | tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); | |
2069 | ||
2070 | /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */ | |
2071 | if (HAVE_DMA_RXALIGN(lp)) | |
2072 | tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl); | |
2073 | else | |
2074 | tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl); | |
2075 | tc_writel(0, &tr->TxPollCtr); /* Batch mode */ | |
2076 | tc_writel(TX_THRESHOLD, &tr->TxThrsh); | |
2077 | tc_writel(INT_EN_CMD, &tr->Int_En); | |
2078 | ||
2079 | /* set queues */ | |
2080 | tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas); | |
2081 | tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base, | |
2082 | &tr->FDA_Lim); | |
2083 | /* | |
2084 | * Activation method: | |
2085 | * First, enable the MAC Transmitter and the DMA Receive circuits. | |
2086 | * Then enable the DMA Transmitter and the MAC Receive circuits. | |
2087 | */ | |
2088 | tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */ | |
2089 | tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */ | |
2090 | ||
2091 | /* start MAC transmitter */ | |
2092 | /* TX4939 does not have EnLCarr */ | |
2093 | if (lp->chiptype == TC35815_TX4939) | |
2094 | txctl &= ~Tx_EnLCarr; | |
2095 | /* WORKAROUND: ignore LostCrS in full duplex operation */ | |
2096 | if (!dev->phydev || !lp->link || lp->duplex == DUPLEX_FULL) | |
2097 | txctl &= ~Tx_EnLCarr; | |
2098 | tc_writel(txctl, &tr->Tx_Ctl); | |
2099 | } | |
2100 | ||
2101 | #ifdef CONFIG_PM | |
2102 | static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state) | |
2103 | { | |
2104 | struct net_device *dev = pci_get_drvdata(pdev); | |
2105 | struct tc35815_local *lp = netdev_priv(dev); | |
2106 | unsigned long flags; | |
2107 | ||
2108 | pci_save_state(pdev); | |
2109 | if (!netif_running(dev)) | |
2110 | return 0; | |
2111 | netif_device_detach(dev); | |
2112 | if (dev->phydev) | |
2113 | phy_stop(dev->phydev); | |
2114 | spin_lock_irqsave(&lp->lock, flags); | |
2115 | tc35815_chip_reset(dev); | |
2116 | spin_unlock_irqrestore(&lp->lock, flags); | |
2117 | pci_set_power_state(pdev, PCI_D3hot); | |
2118 | return 0; | |
2119 | } | |
2120 | ||
2121 | static int tc35815_resume(struct pci_dev *pdev) | |
2122 | { | |
2123 | struct net_device *dev = pci_get_drvdata(pdev); | |
2124 | ||
2125 | pci_restore_state(pdev); | |
2126 | if (!netif_running(dev)) | |
2127 | return 0; | |
2128 | pci_set_power_state(pdev, PCI_D0); | |
2129 | tc35815_restart(dev); | |
2130 | netif_carrier_off(dev); | |
2131 | if (dev->phydev) | |
2132 | phy_start(dev->phydev); | |
2133 | netif_device_attach(dev); | |
2134 | return 0; | |
2135 | } | |
2136 | #endif /* CONFIG_PM */ | |
2137 | ||
2138 | static struct pci_driver tc35815_pci_driver = { | |
2139 | .name = MODNAME, | |
2140 | .id_table = tc35815_pci_tbl, | |
2141 | .probe = tc35815_init_one, | |
2142 | .remove = tc35815_remove_one, | |
2143 | #ifdef CONFIG_PM | |
2144 | .suspend = tc35815_suspend, | |
2145 | .resume = tc35815_resume, | |
2146 | #endif | |
2147 | }; | |
2148 | ||
2149 | module_param_named(speed, options.speed, int, 0); | |
2150 | MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps"); | |
2151 | module_param_named(duplex, options.duplex, int, 0); | |
2152 | MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full"); | |
2153 | ||
2154 | module_pci_driver(tc35815_pci_driver); | |
2155 | MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver"); | |
2156 | MODULE_LICENSE("GPL"); |