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V4L/DVB (5461): Pwc: cisco VT Camera support
[linux-2.6/zen-sources.git] / drivers / net / tc35815.c
blobd7741e23f8de205d225f8abb058f214eef437b41
1 /* tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux.
2 *
3 * Copyright 2001 MontaVista Software Inc.
4 * Author: MontaVista Software, Inc.
5 * ahennessy@mvista.com
6 *
7 * Based on skelton.c by Donald Becker.
8 * Copyright (C) 2000-2001 Toshiba Corporation
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30
31 static const char *version =
32 "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n";
33
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/fcntl.h>
38 #include <linux/interrupt.h>
39 #include <linux/ioport.h>
40 #include <linux/in.h>
41 #include <linux/slab.h>
42 #include <linux/string.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/proc_fs.h>
51 #include <linux/spinlock.h>
52 #include <linux/bitops.h>
53
54 #include <asm/system.h>
55 #include <asm/io.h>
56 #include <asm/dma.h>
57 #include <asm/byteorder.h>
58
59 /*
60 * The name of the card. Is used for messages and in the requests for
61 * io regions, irqs and dma channels
62 */
63 static const char* cardname = "TC35815CF";
64 #define TC35815_PROC_ENTRY "net/tc35815"
65
66 #define TC35815_MODULE_NAME "TC35815CF"
67 #define TX_TIMEOUT (4*HZ)
68
69 /* First, a few definitions that the brave might change. */
70
71 /* use 0 for production, 1 for verification, >2 for debug */
72 #ifndef TC35815_DEBUG
73 #define TC35815_DEBUG 1
74 #endif
75 static unsigned int tc35815_debug = TC35815_DEBUG;
76
77 #define GATHER_TXINT /* On-Demand Tx Interrupt */
78
79 #define vtonocache(p) KSEG1ADDR(virt_to_phys(p))
80
81 /*
82 * Registers
83 */
84 struct tc35815_regs {
85 volatile __u32 DMA_Ctl; /* 0x00 */
86 volatile __u32 TxFrmPtr;
87 volatile __u32 TxThrsh;
88 volatile __u32 TxPollCtr;
89 volatile __u32 BLFrmPtr;
90 volatile __u32 RxFragSize;
91 volatile __u32 Int_En;
92 volatile __u32 FDA_Bas;
93 volatile __u32 FDA_Lim; /* 0x20 */
94 volatile __u32 Int_Src;
95 volatile __u32 unused0[2];
96 volatile __u32 PauseCnt;
97 volatile __u32 RemPauCnt;
98 volatile __u32 TxCtlFrmStat;
99 volatile __u32 unused1;
100 volatile __u32 MAC_Ctl; /* 0x40 */
101 volatile __u32 CAM_Ctl;
102 volatile __u32 Tx_Ctl;
103 volatile __u32 Tx_Stat;
104 volatile __u32 Rx_Ctl;
105 volatile __u32 Rx_Stat;
106 volatile __u32 MD_Data;
107 volatile __u32 MD_CA;
108 volatile __u32 CAM_Adr; /* 0x60 */
109 volatile __u32 CAM_Data;
110 volatile __u32 CAM_Ena;
111 volatile __u32 PROM_Ctl;
112 volatile __u32 PROM_Data;
113 volatile __u32 Algn_Cnt;
114 volatile __u32 CRC_Cnt;
115 volatile __u32 Miss_Cnt;
116 };
117
118 /*
119 * Bit assignments
120 */
121 /* DMA_Ctl bit asign ------------------------------------------------------- */
122 #define DMA_IntMask 0x00040000 /* 1:Interupt mask */
123 #define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
124 #define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
125 #define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
126 #define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
127 #define DMA_TestMode 0x00002000 /* 1:Test Mode */
128 #define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
129 #define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
130
131 /* RxFragSize bit asign ---------------------------------------------------- */
132 #define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
133 #define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
134
135 /* MAC_Ctl bit asign ------------------------------------------------------- */
136 #define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */
137 #define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */
138 #define MAC_MissRoll 0x00000400 /* 1:Missed Roll */
139 #define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */
140 #define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */
141 #define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/
142 #define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */
143 #define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */
144 #define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */
145 #define MAC_Reset 0x00000004 /* 1:Software Reset */
146 #define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */
147 #define MAC_HaltReq 0x00000001 /* 1:Halt request */
148
149 /* PROM_Ctl bit asign ------------------------------------------------------ */
150 #define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */
151 #define PROM_Read 0x00004000 /*10:Read operation */
152 #define PROM_Write 0x00002000 /*01:Write operation */
153 #define PROM_Erase 0x00006000 /*11:Erase operation */
154 /*00:Enable or Disable Writting, */
155 /* as specified in PROM_Addr. */
156 #define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */
157 /*00xxxx: disable */
158
159 /* CAM_Ctl bit asign ------------------------------------------------------- */
160 #define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */
161 #define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/
162 /* accept other */
163 #define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */
164 #define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */
165 #define CAM_StationAcc 0x00000001 /* 1:unicast accept */
166
167 /* CAM_Ena bit asign ------------------------------------------------------- */
168 #define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
169 #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
170 #define CAM_Ena_Bit(index) (1<<(index))
171 #define CAM_ENTRY_DESTINATION 0
172 #define CAM_ENTRY_SOURCE 1
173 #define CAM_ENTRY_MACCTL 20
174
175 /* Tx_Ctl bit asign -------------------------------------------------------- */
176 #define Tx_En 0x00000001 /* 1:Transmit enable */
177 #define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */
178 #define Tx_NoPad 0x00000004 /* 1:Suppress Padding */
179 #define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */
180 #define Tx_FBack 0x00000010 /* 1:Fast Back-off */
181 #define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */
182 #define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */
183 #define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */
184 #define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */
185 #define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */
186 #define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */
187 #define Tx_EnComp 0x00004000 /* 1:Enable Completion */
188
189 /* Tx_Stat bit asign ------------------------------------------------------- */
190 #define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */
191 #define Tx_ExColl 0x00000010 /* Excessive Collision */
192 #define Tx_TXDefer 0x00000020 /* Transmit Defered */
193 #define Tx_Paused 0x00000040 /* Transmit Paused */
194 #define Tx_IntTx 0x00000080 /* Interrupt on Tx */
195 #define Tx_Under 0x00000100 /* Underrun */
196 #define Tx_Defer 0x00000200 /* Deferral */
197 #define Tx_NCarr 0x00000400 /* No Carrier */
198 #define Tx_10Stat 0x00000800 /* 10Mbps Status */
199 #define Tx_LateColl 0x00001000 /* Late Collision */
200 #define Tx_TxPar 0x00002000 /* Tx Parity Error */
201 #define Tx_Comp 0x00004000 /* Completion */
202 #define Tx_Halted 0x00008000 /* Tx Halted */
203 #define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */
204
205 /* Rx_Ctl bit asign -------------------------------------------------------- */
206 #define Rx_EnGood 0x00004000 /* 1:Enable Good */
207 #define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */
208 #define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */
209 #define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */
210 #define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */
211 #define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */
212 #define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */
213 #define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */
214 #define Rx_ShortEn 0x00000008 /* 1:Short Enable */
215 #define Rx_LongEn 0x00000004 /* 1:Long Enable */
216 #define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */
217 #define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */
218
219 /* Rx_Stat bit asign ------------------------------------------------------- */
220 #define Rx_Halted 0x00008000 /* Rx Halted */
221 #define Rx_Good 0x00004000 /* Rx Good */
222 #define Rx_RxPar 0x00002000 /* Rx Parity Error */
223 /* 0x00001000 not use */
224 #define Rx_LongErr 0x00000800 /* Rx Long Error */
225 #define Rx_Over 0x00000400 /* Rx Overflow */
226 #define Rx_CRCErr 0x00000200 /* Rx CRC Error */
227 #define Rx_Align 0x00000100 /* Rx Alignment Error */
228 #define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */
229 #define Rx_IntRx 0x00000040 /* Rx Interrupt */
230 #define Rx_CtlRecd 0x00000020 /* Rx Control Receive */
231
232 #define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */
233
234 /* Int_En bit asign -------------------------------------------------------- */
235 #define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
236 #define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */
237 #define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
238 #define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
239 #define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
240 #define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
241 #define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
242 #define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
243 #define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
244 #define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
245 #define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
246 #define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
247 /* Exhausted Enable */
248
249 /* Int_Src bit asign ------------------------------------------------------- */
250 #define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
251 #define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
252 #define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
253 #define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
254 #define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
255 #define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
256 #define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
257 #define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
258 #define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
259 #define Int_SWInt 0x00000020 /* 1:Software request & Clear */
260 #define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
261 #define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
262 #define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
263 #define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
264 #define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
265
266 /* MD_CA bit asign --------------------------------------------------------- */
267 #define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
268 #define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
269 #define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
270
271
272 /* MII register offsets */
273 #define MII_CONTROL 0x0000
274 #define MII_STATUS 0x0001
275 #define MII_PHY_ID0 0x0002
276 #define MII_PHY_ID1 0x0003
277 #define MII_ANAR 0x0004
278 #define MII_ANLPAR 0x0005
279 #define MII_ANER 0x0006
280 /* MII Control register bit definitions. */
281 #define MIICNTL_FDX 0x0100
282 #define MIICNTL_RST_AUTO 0x0200
283 #define MIICNTL_ISOLATE 0x0400
284 #define MIICNTL_PWRDWN 0x0800
285 #define MIICNTL_AUTO 0x1000
286 #define MIICNTL_SPEED 0x2000
287 #define MIICNTL_LPBK 0x4000
288 #define MIICNTL_RESET 0x8000
289 /* MII Status register bit significance. */
290 #define MIISTAT_EXT 0x0001
291 #define MIISTAT_JAB 0x0002
292 #define MIISTAT_LINK 0x0004
293 #define MIISTAT_CAN_AUTO 0x0008
294 #define MIISTAT_FAULT 0x0010
295 #define MIISTAT_AUTO_DONE 0x0020
296 #define MIISTAT_CAN_T 0x0800
297 #define MIISTAT_CAN_T_FDX 0x1000
298 #define MIISTAT_CAN_TX 0x2000
299 #define MIISTAT_CAN_TX_FDX 0x4000
300 #define MIISTAT_CAN_T4 0x8000
301 /* MII Auto-Negotiation Expansion/RemoteEnd Register Bits */
302 #define MII_AN_TX_FDX 0x0100
303 #define MII_AN_TX_HDX 0x0080
304 #define MII_AN_10_FDX 0x0040
305 #define MII_AN_10_HDX 0x0020
306
307
308 /*
309 * Descriptors
310 */
311
312 /* Frame descripter */
313 struct FDesc {
314 volatile __u32 FDNext;
315 volatile __u32 FDSystem;
316 volatile __u32 FDStat;
317 volatile __u32 FDCtl;
318 };
319
320 /* Buffer descripter */
321 struct BDesc {
322 volatile __u32 BuffData;
323 volatile __u32 BDCtl;
324 };
325
326 #define FD_ALIGN 16
327
328 /* Frame Descripter bit asign ---------------------------------------------- */
329 #define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
330 #define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
331 #define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
332 #define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
333 #define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
334 #define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
335 #define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
336 #define FD_FrmOpt_Packing 0x04000000 /* Rx only */
337 #define FD_CownsFD 0x80000000 /* FD Controller owner bit */
338 #define FD_Next_EOL 0x00000001 /* FD EOL indicator */
339 #define FD_BDCnt_SHIFT 16
340
341 /* Buffer Descripter bit asign --------------------------------------------- */
342 #define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
343 #define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
344 #define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
345 #define BD_CownsBD 0x80000000 /* BD Controller owner bit */
346 #define BD_RxBDID_SHIFT 16
347 #define BD_RxBDSeqN_SHIFT 24
348
349
350 /* Some useful constants. */
351 #undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
352
353 #ifdef NO_CHECK_CARRIER
354 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
355 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
356 Tx_En) /* maybe 0x7d01 */
357 #else
358 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
359 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
360 Tx_En) /* maybe 0x7f01 */
361 #endif
362 #define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
363 | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
364
365 #define INT_EN_CMD (Int_NRAbtEn | \
366 Int_DParDEn | Int_DParErrEn | \
367 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
368 Int_STargAbtEn | \
369 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
370
371 /* Tuning parameters */
372 #define DMA_BURST_SIZE 32
373 #define TX_THRESHOLD 1024
374
375 #define FD_PAGE_NUM 2
376 #define FD_PAGE_ORDER 1
377 /* 16 + RX_BUF_PAGES * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*2 */
378 #define RX_BUF_PAGES 8 /* >= 2 */
379 #define RX_FD_NUM 250 /* >= 32 */
380 #define TX_FD_NUM 128
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_PAGES];
396 };
397
398
399 extern unsigned long tc_readl(volatile __u32 *addr);
400 extern void tc_writel(unsigned long data, volatile __u32 *addr);
401
402 dma_addr_t priv_dma_handle;
403
404 /* Information that need to be kept for each board. */
405 struct tc35815_local {
406 struct net_device *next_module;
407
408 /* statistics */
409 struct net_device_stats stats;
410 struct {
411 int max_tx_qlen;
412 int tx_ints;
413 int rx_ints;
414 } lstats;
415
416 int tbusy;
417 int option;
418 #define TC35815_OPT_AUTO 0x00
419 #define TC35815_OPT_10M 0x01
420 #define TC35815_OPT_100M 0x02
421 #define TC35815_OPT_FULLDUP 0x04
422 int linkspeed; /* 10 or 100 */
423 int fullduplex;
424
425 /*
426 * Transmitting: Batch Mode.
427 * 1 BD in 1 TxFD.
428 * Receiving: Packing Mode.
429 * 1 circular FD for Free Buffer List.
430 * RX_BUG_PAGES BD in Free Buffer FD.
431 * One Free Buffer BD has PAGE_SIZE data buffer.
432 */
433 struct pci_dev *pdev;
434 dma_addr_t fd_buf_dma_handle;
435 void * fd_buf; /* for TxFD, TxFD, FrFD */
436 struct TxFD *tfd_base;
437 int tfd_start;
438 int tfd_end;
439 struct RxFD *rfd_base;
440 struct RxFD *rfd_limit;
441 struct RxFD *rfd_cur;
442 struct FrFD *fbl_ptr;
443 unsigned char fbl_curid;
444 dma_addr_t data_buf_dma_handle[RX_BUF_PAGES];
445 void * data_buf[RX_BUF_PAGES]; /* packing */
446 spinlock_t lock;
447 };
448
449 /* Index to functions, as function prototypes. */
450
451 static int __devinit tc35815_probe1(struct pci_dev *pdev, unsigned int base_addr, unsigned int irq);
452
453 static int tc35815_open(struct net_device *dev);
454 static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev);
455 static void tc35815_tx_timeout(struct net_device *dev);
456 static irqreturn_t tc35815_interrupt(int irq, void *dev_id);
457 static void tc35815_rx(struct net_device *dev);
458 static void tc35815_txdone(struct net_device *dev);
459 static int tc35815_close(struct net_device *dev);
460 static struct net_device_stats *tc35815_get_stats(struct net_device *dev);
461 static void tc35815_set_multicast_list(struct net_device *dev);
462
463 static void tc35815_chip_reset(struct net_device *dev);
464 static void tc35815_chip_init(struct net_device *dev);
465 static void tc35815_phy_chip_init(struct net_device *dev);
466
467 /* A list of all installed tc35815 devices. */
468 static struct net_device *root_tc35815_dev = NULL;
469
470 /*
471 * PCI device identifiers for "new style" Linux PCI Device Drivers
472 */
473 static struct pci_device_id tc35815_pci_tbl[] = {
474 { PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
475 { 0, }
476 };
477
478 MODULE_DEVICE_TABLE (pci, tc35815_pci_tbl);
479
480 int
481 tc35815_probe(struct pci_dev *pdev,
482 const struct pci_device_id *ent)
483 {
484 int err = 0;
485 int ret;
486 unsigned long pci_memaddr;
487 unsigned int pci_irq_line;
488
489 printk(KERN_INFO "tc35815_probe: found device %#08x.%#08x\n", ent->vendor, ent->device);
490
491 err = pci_enable_device(pdev);
492 if (err)
493 return err;
494
495 pci_memaddr = pci_resource_start (pdev, 1);
496
497 printk(KERN_INFO " pci_memaddr=%#08lx resource_flags=%#08lx\n", pci_memaddr, pci_resource_flags (pdev, 0));
498
499 if (!pci_memaddr) {
500 printk(KERN_WARNING "no PCI MEM resources, aborting\n");
501 ret = -ENODEV;
502 goto err_out;
503 }
504 pci_irq_line = pdev->irq;
505 /* irq disabled. */
506 if (pci_irq_line == 0) {
507 printk(KERN_WARNING "no PCI irq, aborting\n");
508 ret = -ENODEV;
509 goto err_out;
510 }
511
512 ret = tc35815_probe1(pdev, pci_memaddr, pci_irq_line);
513 if (ret)
514 goto err_out;
515
516 pci_set_master(pdev);
517
518 return 0;
519
520 err_out:
521 pci_disable_device(pdev);
522 return ret;
523 }
524
525 static int __devinit tc35815_probe1(struct pci_dev *pdev, unsigned int base_addr, unsigned int irq)
526 {
527 static unsigned version_printed = 0;
528 int i, ret;
529 struct tc35815_local *lp;
530 struct tc35815_regs *tr;
531 struct net_device *dev;
532
533 /* Allocate a new 'dev' if needed. */
534 dev = alloc_etherdev(sizeof(struct tc35815_local));
535 if (dev == NULL)
536 return -ENOMEM;
537
538 /*
539 * alloc_etherdev allocs and zeros dev->priv
540 */
541 lp = dev->priv;
542
543 if (tc35815_debug && version_printed++ == 0)
544 printk(KERN_DEBUG "%s", version);
545
546 /* Fill in the 'dev' fields. */
547 dev->irq = irq;
548 dev->base_addr = (unsigned long)ioremap(base_addr,
549 sizeof(struct tc35815_regs));
550 if (!dev->base_addr) {
551 ret = -ENOMEM;
552 goto err_out;
553 }
554 tr = (struct tc35815_regs*)dev->base_addr;
555
556 tc35815_chip_reset(dev);
557
558 /* Retrieve and print the ethernet address. */
559 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
560 ;
561 for (i = 0; i < 6; i += 2) {
562 unsigned short data;
563 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl);
564 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
565 ;
566 data = tc_readl(&tr->PROM_Data);
567 dev->dev_addr[i] = data & 0xff;
568 dev->dev_addr[i+1] = data >> 8;
569 }
570
571 /* Initialize the device structure. */
572 lp->pdev = pdev;
573 lp->next_module = root_tc35815_dev;
574 root_tc35815_dev = dev;
575
576 spin_lock_init(&lp->lock);
577
578 if (dev->mem_start > 0) {
579 lp->option = dev->mem_start;
580 if ((lp->option & TC35815_OPT_10M) &&
581 (lp->option & TC35815_OPT_100M)) {
582 /* if both speed speficied, auto select. */
583 lp->option &= ~(TC35815_OPT_10M | TC35815_OPT_100M);
584 }
585 }
586 //XXX fixme
587 lp->option |= TC35815_OPT_10M;
588
589 /* do auto negotiation */
590 tc35815_phy_chip_init(dev);
591
592 dev->open = tc35815_open;
593 dev->stop = tc35815_close;
594 dev->tx_timeout = tc35815_tx_timeout;
595 dev->watchdog_timeo = TX_TIMEOUT;
596 dev->hard_start_xmit = tc35815_send_packet;
597 dev->get_stats = tc35815_get_stats;
598 dev->set_multicast_list = tc35815_set_multicast_list;
599 SET_MODULE_OWNER(dev);
600 SET_NETDEV_DEV(dev, &pdev->dev);
601
602 ret = register_netdev(dev);
603 if (ret)
604 goto err_out_iounmap;
605
606 printk(KERN_INFO "%s: %s found at %#x, irq %d, MAC",
607 dev->name, cardname, base_addr, irq);
608 for (i = 0; i < 6; i++)
609 printk(" %2.2x", dev->dev_addr[i]);
610 printk("\n");
611 printk(KERN_INFO "%s: linkspeed %dMbps, %s Duplex\n",
612 dev->name, lp->linkspeed, lp->fullduplex ? "Full" : "Half");
613
614 return 0;
615
616 err_out_iounmap:
617 iounmap((void *) dev->base_addr);
618 err_out:
619 free_netdev(dev);
620 return ret;
621 }
622
623
624 static int
625 tc35815_init_queues(struct net_device *dev)
626 {
627 struct tc35815_local *lp = dev->priv;
628 int i;
629 unsigned long fd_addr;
630
631 if (!lp->fd_buf) {
632 if (sizeof(struct FDesc) +
633 sizeof(struct BDesc) * RX_BUF_PAGES +
634 sizeof(struct FDesc) * RX_FD_NUM +
635 sizeof(struct TxFD) * TX_FD_NUM > PAGE_SIZE * FD_PAGE_NUM) {
636 printk(KERN_WARNING "%s: Invalid Queue Size.\n", dev->name);
637 return -ENOMEM;
638 }
639
640 if ((lp->fd_buf = (void *)__get_free_pages(GFP_KERNEL, FD_PAGE_ORDER)) == 0)
641 return -ENOMEM;
642 for (i = 0; i < RX_BUF_PAGES; i++) {
643 if ((lp->data_buf[i] = (void *)get_zeroed_page(GFP_KERNEL)) == 0) {
644 while (--i >= 0) {
645 free_page((unsigned long)lp->data_buf[i]);
646 lp->data_buf[i] = 0;
647 }
648 free_page((unsigned long)lp->fd_buf);
649 lp->fd_buf = 0;
650 return -ENOMEM;
651 }
652 #ifdef __mips__
653 dma_cache_wback_inv((unsigned long)lp->data_buf[i], PAGE_SIZE * FD_PAGE_NUM);
654 #endif
655 }
656 #ifdef __mips__
657 dma_cache_wback_inv((unsigned long)lp->fd_buf, PAGE_SIZE * FD_PAGE_NUM);
658 #endif
659 } else {
660 memset(lp->fd_buf, 0, PAGE_SIZE * FD_PAGE_NUM);
661 #ifdef __mips__
662 dma_cache_wback_inv((unsigned long)lp->fd_buf, PAGE_SIZE * FD_PAGE_NUM);
663 #endif
664 }
665 #ifdef __mips__
666 fd_addr = (unsigned long)vtonocache(lp->fd_buf);
667 #else
668 fd_addr = (unsigned long)lp->fd_buf;
669 #endif
670
671 /* Free Descriptors (for Receive) */
672 lp->rfd_base = (struct RxFD *)fd_addr;
673 fd_addr += sizeof(struct RxFD) * RX_FD_NUM;
674 for (i = 0; i < RX_FD_NUM; i++) {
675 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD);
676 }
677 lp->rfd_cur = lp->rfd_base;
678 lp->rfd_limit = (struct RxFD *)(fd_addr -
679 sizeof(struct FDesc) -
680 sizeof(struct BDesc) * 30);
681
682 /* Transmit Descriptors */
683 lp->tfd_base = (struct TxFD *)fd_addr;
684 fd_addr += sizeof(struct TxFD) * TX_FD_NUM;
685 for (i = 0; i < TX_FD_NUM; i++) {
686 lp->tfd_base[i].fd.FDNext = cpu_to_le32(virt_to_bus(&lp->tfd_base[i+1]));
687 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0);
688 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0);
689 }
690 lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(virt_to_bus(&lp->tfd_base[0]));
691 lp->tfd_start = 0;
692 lp->tfd_end = 0;
693
694 /* Buffer List (for Receive) */
695 lp->fbl_ptr = (struct FrFD *)fd_addr;
696 lp->fbl_ptr->fd.FDNext = cpu_to_le32(virt_to_bus(lp->fbl_ptr));
697 lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_PAGES | FD_CownsFD);
698 for (i = 0; i < RX_BUF_PAGES; i++) {
699 lp->fbl_ptr->bd[i].BuffData = cpu_to_le32(virt_to_bus(lp->data_buf[i]));
700 /* BDID is index of FrFD.bd[] */
701 lp->fbl_ptr->bd[i].BDCtl =
702 cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) | PAGE_SIZE);
703 }
704 lp->fbl_curid = 0;
705
706 return 0;
707 }
708
709 static void
710 tc35815_clear_queues(struct net_device *dev)
711 {
712 struct tc35815_local *lp = dev->priv;
713 int i;
714
715 for (i = 0; i < TX_FD_NUM; i++) {
716 struct sk_buff *skb = (struct sk_buff *)
717 le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
718 if (skb)
719 dev_kfree_skb_any(skb);
720 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0);
721 }
722
723 tc35815_init_queues(dev);
724 }
725
726 static void
727 tc35815_free_queues(struct net_device *dev)
728 {
729 struct tc35815_local *lp = dev->priv;
730 int i;
731
732 if (lp->tfd_base) {
733 for (i = 0; i < TX_FD_NUM; i++) {
734 struct sk_buff *skb = (struct sk_buff *)
735 le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
736 if (skb)
737 dev_kfree_skb_any(skb);
738 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0);
739 }
740 }
741
742 lp->rfd_base = NULL;
743 lp->rfd_base = NULL;
744 lp->rfd_limit = NULL;
745 lp->rfd_cur = NULL;
746 lp->fbl_ptr = NULL;
747
748 for (i = 0; i < RX_BUF_PAGES; i++) {
749 if (lp->data_buf[i])
750 free_page((unsigned long)lp->data_buf[i]);
751 lp->data_buf[i] = 0;
752 }
753 if (lp->fd_buf)
754 __free_pages(lp->fd_buf, FD_PAGE_ORDER);
755 lp->fd_buf = NULL;
756 }
757
758 static void
759 dump_txfd(struct TxFD *fd)
760 {
761 printk("TxFD(%p): %08x %08x %08x %08x\n", fd,
762 le32_to_cpu(fd->fd.FDNext),
763 le32_to_cpu(fd->fd.FDSystem),
764 le32_to_cpu(fd->fd.FDStat),
765 le32_to_cpu(fd->fd.FDCtl));
766 printk("BD: ");
767 printk(" %08x %08x",
768 le32_to_cpu(fd->bd.BuffData),
769 le32_to_cpu(fd->bd.BDCtl));
770 printk("\n");
771 }
772
773 static int
774 dump_rxfd(struct RxFD *fd)
775 {
776 int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
777 if (bd_count > 8)
778 bd_count = 8;
779 printk("RxFD(%p): %08x %08x %08x %08x\n", fd,
780 le32_to_cpu(fd->fd.FDNext),
781 le32_to_cpu(fd->fd.FDSystem),
782 le32_to_cpu(fd->fd.FDStat),
783 le32_to_cpu(fd->fd.FDCtl));
784 if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD)
785 return 0;
786 printk("BD: ");
787 for (i = 0; i < bd_count; i++)
788 printk(" %08x %08x",
789 le32_to_cpu(fd->bd[i].BuffData),
790 le32_to_cpu(fd->bd[i].BDCtl));
791 printk("\n");
792 return bd_count;
793 }
794
795 static void
796 dump_frfd(struct FrFD *fd)
797 {
798 int i;
799 printk("FrFD(%p): %08x %08x %08x %08x\n", fd,
800 le32_to_cpu(fd->fd.FDNext),
801 le32_to_cpu(fd->fd.FDSystem),
802 le32_to_cpu(fd->fd.FDStat),
803 le32_to_cpu(fd->fd.FDCtl));
804 printk("BD: ");
805 for (i = 0; i < RX_BUF_PAGES; i++)
806 printk(" %08x %08x",
807 le32_to_cpu(fd->bd[i].BuffData),
808 le32_to_cpu(fd->bd[i].BDCtl));
809 printk("\n");
810 }
811
812 static void
813 panic_queues(struct net_device *dev)
814 {
815 struct tc35815_local *lp = dev->priv;
816 int i;
817
818 printk("TxFD base %p, start %d, end %d\n",
819 lp->tfd_base, lp->tfd_start, lp->tfd_end);
820 printk("RxFD base %p limit %p cur %p\n",
821 lp->rfd_base, lp->rfd_limit, lp->rfd_cur);
822 printk("FrFD %p\n", lp->fbl_ptr);
823 for (i = 0; i < TX_FD_NUM; i++)
824 dump_txfd(&lp->tfd_base[i]);
825 for (i = 0; i < RX_FD_NUM; i++) {
826 int bd_count = dump_rxfd(&lp->rfd_base[i]);
827 i += (bd_count + 1) / 2; /* skip BDs */
828 }
829 dump_frfd(lp->fbl_ptr);
830 panic("%s: Illegal queue state.", dev->name);
831 }
832
833 #if 0
834 static void print_buf(char *add, int length)
835 {
836 int i;
837 int len = length;
838
839 printk("print_buf(%08x)(%x)\n", (unsigned int) add,length);
840
841 if (len > 100)
842 len = 100;
843 for (i = 0; i < len; i++) {
844 printk(" %2.2X", (unsigned char) add[i]);
845 if (!(i % 16))
846 printk("\n");
847 }
848 printk("\n");
849 }
850 #endif
851
852 static void print_eth(char *add)
853 {
854 int i;
855
856 printk("print_eth(%08x)\n", (unsigned int) add);
857 for (i = 0; i < 6; i++)
858 printk(" %2.2X", (unsigned char) add[i + 6]);
859 printk(" =>");
860 for (i = 0; i < 6; i++)
861 printk(" %2.2X", (unsigned char) add[i]);
862 printk(" : %2.2X%2.2X\n", (unsigned char) add[12], (unsigned char) add[13]);
863 }
864
865 /*
866 * Open/initialize the board. This is called (in the current kernel)
867 * sometime after booting when the 'ifconfig' program is run.
868 *
869 * This routine should set everything up anew at each open, even
870 * registers that "should" only need to be set once at boot, so that
871 * there is non-reboot way to recover if something goes wrong.
872 */
873 static int
874 tc35815_open(struct net_device *dev)
875 {
876 struct tc35815_local *lp = dev->priv;
877 /*
878 * This is used if the interrupt line can turned off (shared).
879 * See 3c503.c for an example of selecting the IRQ at config-time.
880 */
881
882 if (dev->irq == 0 ||
883 request_irq(dev->irq, &tc35815_interrupt, IRQF_SHARED, cardname, dev)) {
884 return -EAGAIN;
885 }
886
887 tc35815_chip_reset(dev);
888
889 if (tc35815_init_queues(dev) != 0) {
890 free_irq(dev->irq, dev);
891 return -EAGAIN;
892 }
893
894 /* Reset the hardware here. Don't forget to set the station address. */
895 tc35815_chip_init(dev);
896
897 lp->tbusy = 0;
898 netif_start_queue(dev);
899
900 return 0;
901 }
902
903 static void tc35815_tx_timeout(struct net_device *dev)
904 {
905 struct tc35815_local *lp = dev->priv;
906 struct tc35815_regs *tr = (struct tc35815_regs *)dev->base_addr;
907 unsigned long flags;
908
909 spin_lock_irqsave(&lp->lock, flags);
910 printk(KERN_WARNING "%s: transmit timed out, status %#lx\n",
911 dev->name, tc_readl(&tr->Tx_Stat));
912 /* Try to restart the adaptor. */
913 tc35815_chip_reset(dev);
914 tc35815_clear_queues(dev);
915 tc35815_chip_init(dev);
916 lp->tbusy=0;
917 spin_unlock_irqrestore(&lp->lock, flags);
918 dev->trans_start = jiffies;
919 netif_wake_queue(dev);
920 }
921
922 static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
923 {
924 struct tc35815_local *lp = dev->priv;
925 struct tc35815_regs *tr = (struct tc35815_regs *)dev->base_addr;
926
927 if (netif_queue_stopped(dev)) {
928 /*
929 * If we get here, some higher level has decided we are broken.
930 * There should really be a "kick me" function call instead.
931 */
932 int tickssofar = jiffies - dev->trans_start;
933 if (tickssofar < 5)
934 return 1;
935 printk(KERN_WARNING "%s: transmit timed out, status %#lx\n",
936 dev->name, tc_readl(&tr->Tx_Stat));
937 /* Try to restart the adaptor. */
938 tc35815_chip_reset(dev);
939 tc35815_clear_queues(dev);
940 tc35815_chip_init(dev);
941 lp->tbusy=0;
942 dev->trans_start = jiffies;
943 netif_wake_queue(dev);
944 }
945
946 /*
947 * Block a timer-based transmit from overlapping. This could better be
948 * done with atomic_swap(1, lp->tbusy), but set_bit() works as well.
949 */
950 if (test_and_set_bit(0, (void*)&lp->tbusy) != 0) {
951 printk(KERN_WARNING "%s: Transmitter access conflict.\n", dev->name);
952 dev_kfree_skb_any(skb);
953 } else {
954 short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
955 unsigned char *buf = skb->data;
956 struct TxFD *txfd = &lp->tfd_base[lp->tfd_start];
957 unsigned long flags;
958 lp->stats.tx_bytes += skb->len;
959
960
961 #ifdef __mips__
962 dma_cache_wback_inv((unsigned long)buf, length);
963 #endif
964
965 spin_lock_irqsave(&lp->lock, flags);
966
967 /* failsafe... */
968 if (lp->tfd_start != lp->tfd_end)
969 tc35815_txdone(dev);
970
971
972 txfd->bd.BuffData = cpu_to_le32(virt_to_bus(buf));
973
974 txfd->bd.BDCtl = cpu_to_le32(length);
975 txfd->fd.FDSystem = cpu_to_le32((__u32)skb);
976 txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT));
977
978 if (lp->tfd_start == lp->tfd_end) {
979 /* Start DMA Transmitter. */
980 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
981 #ifdef GATHER_TXINT
982 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
983 #endif
984 if (tc35815_debug > 2) {
985 printk("%s: starting TxFD.\n", dev->name);
986 dump_txfd(txfd);
987 if (tc35815_debug > 3)
988 print_eth(buf);
989 }
990 tc_writel(virt_to_bus(txfd), &tr->TxFrmPtr);
991 } else {
992 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL);
993 if (tc35815_debug > 2) {
994 printk("%s: queueing TxFD.\n", dev->name);
995 dump_txfd(txfd);
996 if (tc35815_debug > 3)
997 print_eth(buf);
998 }
999 }
1000 lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
1001
1002 dev->trans_start = jiffies;
1003
1004 if ((lp->tfd_start + 1) % TX_FD_NUM != lp->tfd_end) {
1005 /* we can send another packet */
1006 lp->tbusy = 0;
1007 netif_start_queue(dev);
1008 } else {
1009 netif_stop_queue(dev);
1010 if (tc35815_debug > 1)
1011 printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name);
1012 }
1013 spin_unlock_irqrestore(&lp->lock, flags);
1014 }
1015
1016 return 0;
1017 }
1018
1019 #define FATAL_ERROR_INT \
1020 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
1021 static void tc35815_fatal_error_interrupt(struct net_device *dev, int status)
1022 {
1023 static int count;
1024 printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):",
1025 dev->name, status);
1026
1027 if (status & Int_IntPCI)
1028 printk(" IntPCI");
1029 if (status & Int_DmParErr)
1030 printk(" DmParErr");
1031 if (status & Int_IntNRAbt)
1032 printk(" IntNRAbt");
1033 printk("\n");
1034 if (count++ > 100)
1035 panic("%s: Too many fatal errors.", dev->name);
1036 printk(KERN_WARNING "%s: Resetting %s...\n", dev->name, cardname);
1037 /* Try to restart the adaptor. */
1038 tc35815_chip_reset(dev);
1039 tc35815_clear_queues(dev);
1040 tc35815_chip_init(dev);
1041 }
1042
1043 /*
1044 * The typical workload of the driver:
1045 * Handle the network interface interrupts.
1046 */
1047 static irqreturn_t tc35815_interrupt(int irq, void *dev_id)
1048 {
1049 struct net_device *dev = dev_id;
1050 struct tc35815_regs *tr;
1051 struct tc35815_local *lp;
1052 int status, boguscount = 0;
1053 int handled = 0;
1054
1055 if (dev == NULL) {
1056 printk(KERN_WARNING "%s: irq %d for unknown device.\n", cardname, irq);
1057 return IRQ_NONE;
1058 }
1059
1060 tr = (struct tc35815_regs*)dev->base_addr;
1061 lp = dev->priv;
1062
1063 do {
1064 status = tc_readl(&tr->Int_Src);
1065 if (status == 0)
1066 break;
1067 handled = 1;
1068 tc_writel(status, &tr->Int_Src); /* write to clear */
1069
1070 /* Fatal errors... */
1071 if (status & FATAL_ERROR_INT) {
1072 tc35815_fatal_error_interrupt(dev, status);
1073 break;
1074 }
1075 /* recoverable errors */
1076 if (status & Int_IntFDAEx) {
1077 /* disable FDAEx int. (until we make rooms...) */
1078 tc_writel(tc_readl(&tr->Int_En) & ~Int_FDAExEn, &tr->Int_En);
1079 printk(KERN_WARNING
1080 "%s: Free Descriptor Area Exhausted (%#x).\n",
1081 dev->name, status);
1082 lp->stats.rx_dropped++;
1083 }
1084 if (status & Int_IntBLEx) {
1085 /* disable BLEx int. (until we make rooms...) */
1086 tc_writel(tc_readl(&tr->Int_En) & ~Int_BLExEn, &tr->Int_En);
1087 printk(KERN_WARNING
1088 "%s: Buffer List Exhausted (%#x).\n",
1089 dev->name, status);
1090 lp->stats.rx_dropped++;
1091 }
1092 if (status & Int_IntExBD) {
1093 printk(KERN_WARNING
1094 "%s: Excessive Buffer Descriptiors (%#x).\n",
1095 dev->name, status);
1096 lp->stats.rx_length_errors++;
1097 }
1098 /* normal notification */
1099 if (status & Int_IntMacRx) {
1100 /* Got a packet(s). */
1101 lp->lstats.rx_ints++;
1102 tc35815_rx(dev);
1103 }
1104 if (status & Int_IntMacTx) {
1105 lp->lstats.tx_ints++;
1106 tc35815_txdone(dev);
1107 }
1108 } while (++boguscount < 20) ;
1109
1110 return IRQ_RETVAL(handled);
1111 }
1112
1113 /* We have a good packet(s), get it/them out of the buffers. */
1114 static void
1115 tc35815_rx(struct net_device *dev)
1116 {
1117 struct tc35815_local *lp = dev->priv;
1118 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1119 unsigned int fdctl;
1120 int i;
1121 int buf_free_count = 0;
1122 int fd_free_count = 0;
1123
1124 while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) {
1125 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat);
1126 int pkt_len = fdctl & FD_FDLength_MASK;
1127 struct RxFD *next_rfd;
1128 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1129
1130 if (tc35815_debug > 2)
1131 dump_rxfd(lp->rfd_cur);
1132 if (status & Rx_Good) {
1133 /* Malloc up new buffer. */
1134 struct sk_buff *skb;
1135 unsigned char *data;
1136 int cur_bd, offset;
1137
1138 lp->stats.rx_bytes += pkt_len;
1139
1140 skb = dev_alloc_skb(pkt_len + 2); /* +2: for reserve */
1141 if (skb == NULL) {
1142 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
1143 dev->name);
1144 lp->stats.rx_dropped++;
1145 break;
1146 }
1147 skb_reserve(skb, 2); /* 16 bit alignment */
1148
1149 data = skb_put(skb, pkt_len);
1150
1151 /* copy from receive buffer */
1152 cur_bd = 0;
1153 offset = 0;
1154 while (offset < pkt_len && cur_bd < bd_count) {
1155 int len = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BDCtl) &
1156 BD_BuffLength_MASK;
1157 void *rxbuf =
1158 bus_to_virt(le32_to_cpu(lp->rfd_cur->bd[cur_bd].BuffData));
1159 #ifdef __mips__
1160 dma_cache_inv((unsigned long)rxbuf, len);
1161 #endif
1162 memcpy(data + offset, rxbuf, len);
1163 offset += len;
1164 cur_bd++;
1165 }
1166 #if 0
1167 print_buf(data,pkt_len);
1168 #endif
1169 if (tc35815_debug > 3)
1170 print_eth(data);
1171 skb->protocol = eth_type_trans(skb, dev);
1172 netif_rx(skb);
1173 lp->stats.rx_packets++;
1174 } else {
1175 lp->stats.rx_errors++;
1176 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1177 if ((status & Rx_LongErr) && (status & Rx_CRCErr)) {
1178 status &= ~(Rx_LongErr|Rx_CRCErr);
1179 status |= Rx_Over;
1180 }
1181 if (status & Rx_LongErr) lp->stats.rx_length_errors++;
1182 if (status & Rx_Over) lp->stats.rx_fifo_errors++;
1183 if (status & Rx_CRCErr) lp->stats.rx_crc_errors++;
1184 if (status & Rx_Align) lp->stats.rx_frame_errors++;
1185 }
1186
1187 if (bd_count > 0) {
1188 /* put Free Buffer back to controller */
1189 int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl);
1190 unsigned char id =
1191 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1192 if (id >= RX_BUF_PAGES) {
1193 printk("%s: invalid BDID.\n", dev->name);
1194 panic_queues(dev);
1195 }
1196 /* free old buffers */
1197 while (lp->fbl_curid != id) {
1198 bdctl = le32_to_cpu(lp->fbl_ptr->bd[lp->fbl_curid].BDCtl);
1199 if (bdctl & BD_CownsBD) {
1200 printk("%s: Freeing invalid BD.\n",
1201 dev->name);
1202 panic_queues(dev);
1203 }
1204 /* pass BD to controler */
1205 /* Note: BDLength was modified by chip. */
1206 lp->fbl_ptr->bd[lp->fbl_curid].BDCtl =
1207 cpu_to_le32(BD_CownsBD |
1208 (lp->fbl_curid << BD_RxBDID_SHIFT) |
1209 PAGE_SIZE);
1210 lp->fbl_curid =
1211 (lp->fbl_curid + 1) % RX_BUF_PAGES;
1212 if (tc35815_debug > 2) {
1213 printk("%s: Entering new FBD %d\n",
1214 dev->name, lp->fbl_curid);
1215 dump_frfd(lp->fbl_ptr);
1216 }
1217 buf_free_count++;
1218 }
1219 }
1220
1221 /* put RxFD back to controller */
1222 next_rfd = bus_to_virt(le32_to_cpu(lp->rfd_cur->fd.FDNext));
1223 #ifdef __mips__
1224 next_rfd = (struct RxFD *)vtonocache(next_rfd);
1225 #endif
1226 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) {
1227 printk("%s: RxFD FDNext invalid.\n", dev->name);
1228 panic_queues(dev);
1229 }
1230 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) {
1231 /* pass FD to controler */
1232 lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead); /* for debug */
1233 lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD);
1234 lp->rfd_cur++;
1235 fd_free_count++;
1236 }
1237
1238 lp->rfd_cur = next_rfd;
1239 }
1240
1241 /* re-enable BL/FDA Exhaust interrupts. */
1242 if (fd_free_count) {
1243 tc_writel(tc_readl(&tr->Int_En) | Int_FDAExEn, &tr->Int_En);
1244 if (buf_free_count)
1245 tc_writel(tc_readl(&tr->Int_En) | Int_BLExEn, &tr->Int_En);
1246 }
1247 }
1248
1249 #ifdef NO_CHECK_CARRIER
1250 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1251 #else
1252 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1253 #endif
1254
1255 static void
1256 tc35815_check_tx_stat(struct net_device *dev, int status)
1257 {
1258 struct tc35815_local *lp = dev->priv;
1259 const char *msg = NULL;
1260
1261 /* count collisions */
1262 if (status & Tx_ExColl)
1263 lp->stats.collisions += 16;
1264 if (status & Tx_TxColl_MASK)
1265 lp->stats.collisions += status & Tx_TxColl_MASK;
1266
1267 /* WORKAROUND: ignore LostCrS in full duplex operation */
1268 if (lp->fullduplex)
1269 status &= ~Tx_NCarr;
1270
1271 if (!(status & TX_STA_ERR)) {
1272 /* no error. */
1273 lp->stats.tx_packets++;
1274 return;
1275 }
1276
1277 lp->stats.tx_errors++;
1278 if (status & Tx_ExColl) {
1279 lp->stats.tx_aborted_errors++;
1280 msg = "Excessive Collision.";
1281 }
1282 if (status & Tx_Under) {
1283 lp->stats.tx_fifo_errors++;
1284 msg = "Tx FIFO Underrun.";
1285 }
1286 if (status & Tx_Defer) {
1287 lp->stats.tx_fifo_errors++;
1288 msg = "Excessive Deferral.";
1289 }
1290 #ifndef NO_CHECK_CARRIER
1291 if (status & Tx_NCarr) {
1292 lp->stats.tx_carrier_errors++;
1293 msg = "Lost Carrier Sense.";
1294 }
1295 #endif
1296 if (status & Tx_LateColl) {
1297 lp->stats.tx_aborted_errors++;
1298 msg = "Late Collision.";
1299 }
1300 if (status & Tx_TxPar) {
1301 lp->stats.tx_fifo_errors++;
1302 msg = "Transmit Parity Error.";
1303 }
1304 if (status & Tx_SQErr) {
1305 lp->stats.tx_heartbeat_errors++;
1306 msg = "Signal Quality Error.";
1307 }
1308 if (msg)
1309 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status);
1310 }
1311
1312 static void
1313 tc35815_txdone(struct net_device *dev)
1314 {
1315 struct tc35815_local *lp = dev->priv;
1316 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1317 struct TxFD *txfd;
1318 unsigned int fdctl;
1319 int num_done = 0;
1320
1321 txfd = &lp->tfd_base[lp->tfd_end];
1322 while (lp->tfd_start != lp->tfd_end &&
1323 !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) {
1324 int status = le32_to_cpu(txfd->fd.FDStat);
1325 struct sk_buff *skb;
1326 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext);
1327
1328 if (tc35815_debug > 2) {
1329 printk("%s: complete TxFD.\n", dev->name);
1330 dump_txfd(txfd);
1331 }
1332 tc35815_check_tx_stat(dev, status);
1333
1334 skb = (struct sk_buff *)le32_to_cpu(txfd->fd.FDSystem);
1335 if (skb) {
1336 dev_kfree_skb_any(skb);
1337 }
1338 txfd->fd.FDSystem = cpu_to_le32(0);
1339
1340 num_done++;
1341 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM;
1342 txfd = &lp->tfd_base[lp->tfd_end];
1343 if ((fdnext & ~FD_Next_EOL) != virt_to_bus(txfd)) {
1344 printk("%s: TxFD FDNext invalid.\n", dev->name);
1345 panic_queues(dev);
1346 }
1347 if (fdnext & FD_Next_EOL) {
1348 /* DMA Transmitter has been stopping... */
1349 if (lp->tfd_end != lp->tfd_start) {
1350 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM;
1351 struct TxFD* txhead = &lp->tfd_base[head];
1352 int qlen = (lp->tfd_start + TX_FD_NUM
1353 - lp->tfd_end) % TX_FD_NUM;
1354
1355 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) {
1356 printk("%s: TxFD FDCtl invalid.\n", dev->name);
1357 panic_queues(dev);
1358 }
1359 /* log max queue length */
1360 if (lp->lstats.max_tx_qlen < qlen)
1361 lp->lstats.max_tx_qlen = qlen;
1362
1363
1364 /* start DMA Transmitter again */
1365 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1366 #ifdef GATHER_TXINT
1367 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1368 #endif
1369 if (tc35815_debug > 2) {
1370 printk("%s: start TxFD on queue.\n",
1371 dev->name);
1372 dump_txfd(txfd);
1373 }
1374 tc_writel(virt_to_bus(txfd), &tr->TxFrmPtr);
1375 }
1376 break;
1377 }
1378 }
1379
1380 if (num_done > 0 && lp->tbusy) {
1381 lp->tbusy = 0;
1382 netif_start_queue(dev);
1383 }
1384 }
1385
1386 /* The inverse routine to tc35815_open(). */
1387 static int
1388 tc35815_close(struct net_device *dev)
1389 {
1390 struct tc35815_local *lp = dev->priv;
1391
1392 lp->tbusy = 1;
1393 netif_stop_queue(dev);
1394
1395 /* Flush the Tx and disable Rx here. */
1396
1397 tc35815_chip_reset(dev);
1398 free_irq(dev->irq, dev);
1399
1400 tc35815_free_queues(dev);
1401
1402 return 0;
1403 }
1404
1405 /*
1406 * Get the current statistics.
1407 * This may be called with the card open or closed.
1408 */
1409 static struct net_device_stats *tc35815_get_stats(struct net_device *dev)
1410 {
1411 struct tc35815_local *lp = dev->priv;
1412 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1413 unsigned long flags;
1414
1415 if (netif_running(dev)) {
1416 spin_lock_irqsave(&lp->lock, flags);
1417 /* Update the statistics from the device registers. */
1418 lp->stats.rx_missed_errors = tc_readl(&tr->Miss_Cnt);
1419 spin_unlock_irqrestore(&lp->lock, flags);
1420 }
1421
1422 return &lp->stats;
1423 }
1424
1425 static void tc35815_set_cam_entry(struct tc35815_regs *tr, int index, unsigned char *addr)
1426 {
1427 int cam_index = index * 6;
1428 unsigned long cam_data;
1429 unsigned long saved_addr;
1430 saved_addr = tc_readl(&tr->CAM_Adr);
1431
1432 if (tc35815_debug > 1) {
1433 int i;
1434 printk(KERN_DEBUG "%s: CAM %d:", cardname, index);
1435 for (i = 0; i < 6; i++)
1436 printk(" %02x", addr[i]);
1437 printk("\n");
1438 }
1439 if (index & 1) {
1440 /* read modify write */
1441 tc_writel(cam_index - 2, &tr->CAM_Adr);
1442 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000;
1443 cam_data |= addr[0] << 8 | addr[1];
1444 tc_writel(cam_data, &tr->CAM_Data);
1445 /* write whole word */
1446 tc_writel(cam_index + 2, &tr->CAM_Adr);
1447 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
1448 tc_writel(cam_data, &tr->CAM_Data);
1449 } else {
1450 /* write whole word */
1451 tc_writel(cam_index, &tr->CAM_Adr);
1452 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1453 tc_writel(cam_data, &tr->CAM_Data);
1454 /* read modify write */
1455 tc_writel(cam_index + 4, &tr->CAM_Adr);
1456 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff;
1457 cam_data |= addr[4] << 24 | (addr[5] << 16);
1458 tc_writel(cam_data, &tr->CAM_Data);
1459 }
1460
1461 if (tc35815_debug > 2) {
1462 int i;
1463 for (i = cam_index / 4; i < cam_index / 4 + 2; i++) {
1464 tc_writel(i * 4, &tr->CAM_Adr);
1465 printk("CAM 0x%x: %08lx",
1466 i * 4, tc_readl(&tr->CAM_Data));
1467 }
1468 }
1469 tc_writel(saved_addr, &tr->CAM_Adr);
1470 }
1471
1472
1473 /*
1474 * Set or clear the multicast filter for this adaptor.
1475 * num_addrs == -1 Promiscuous mode, receive all packets
1476 * num_addrs == 0 Normal mode, clear multicast list
1477 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1478 * and do best-effort filtering.
1479 */
1480 static void
1481 tc35815_set_multicast_list(struct net_device *dev)
1482 {
1483 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1484
1485 if (dev->flags&IFF_PROMISC)
1486 {
1487 /* Enable promiscuous mode */
1488 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl);
1489 }
1490 else if((dev->flags&IFF_ALLMULTI) || dev->mc_count > CAM_ENTRY_MAX - 3)
1491 {
1492 /* CAM 0, 1, 20 are reserved. */
1493 /* Disable promiscuous mode, use normal mode. */
1494 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl);
1495 }
1496 else if(dev->mc_count)
1497 {
1498 struct dev_mc_list* cur_addr = dev->mc_list;
1499 int i;
1500 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE);
1501
1502 tc_writel(0, &tr->CAM_Ctl);
1503 /* Walk the address list, and load the filter */
1504 for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
1505 if (!cur_addr)
1506 break;
1507 /* entry 0,1 is reserved. */
1508 tc35815_set_cam_entry(tr, i + 2, cur_addr->dmi_addr);
1509 ena_bits |= CAM_Ena_Bit(i + 2);
1510 }
1511 tc_writel(ena_bits, &tr->CAM_Ena);
1512 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
1513 }
1514 else {
1515 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
1516 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
1517 }
1518 }
1519
1520 static unsigned long tc_phy_read(struct net_device *dev, struct tc35815_regs *tr, int phy, int phy_reg)
1521 {
1522 struct tc35815_local *lp = dev->priv;
1523 unsigned long data;
1524 unsigned long flags;
1525
1526 spin_lock_irqsave(&lp->lock, flags);
1527
1528 tc_writel(MD_CA_Busy | (phy << 5) | phy_reg, &tr->MD_CA);
1529 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
1530 ;
1531 data = tc_readl(&tr->MD_Data);
1532 spin_unlock_irqrestore(&lp->lock, flags);
1533 return data;
1534 }
1535
1536 static void tc_phy_write(struct net_device *dev, unsigned long d, struct tc35815_regs *tr, int phy, int phy_reg)
1537 {
1538 struct tc35815_local *lp = dev->priv;
1539 unsigned long flags;
1540
1541 spin_lock_irqsave(&lp->lock, flags);
1542
1543 tc_writel(d, &tr->MD_Data);
1544 tc_writel(MD_CA_Busy | MD_CA_Wr | (phy << 5) | phy_reg, &tr->MD_CA);
1545 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
1546 ;
1547 spin_unlock_irqrestore(&lp->lock, flags);
1548 }
1549
1550 static void tc35815_phy_chip_init(struct net_device *dev)
1551 {
1552 struct tc35815_local *lp = dev->priv;
1553 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1554 static int first = 1;
1555 unsigned short ctl;
1556
1557 if (first) {
1558 unsigned short id0, id1;
1559 int count;
1560 first = 0;
1561
1562 /* first data written to the PHY will be an ID number */
1563 tc_phy_write(dev, 0, tr, 0, MII_CONTROL); /* ID:0 */
1564 #if 0
1565 tc_phy_write(dev, MIICNTL_RESET, tr, 0, MII_CONTROL);
1566 printk(KERN_INFO "%s: Resetting PHY...", dev->name);
1567 while (tc_phy_read(dev, tr, 0, MII_CONTROL) & MIICNTL_RESET)
1568 ;
1569 printk("\n");
1570 tc_phy_write(dev, MIICNTL_AUTO|MIICNTL_SPEED|MIICNTL_FDX, tr, 0,
1571 MII_CONTROL);
1572 #endif
1573 id0 = tc_phy_read(dev, tr, 0, MII_PHY_ID0);
1574 id1 = tc_phy_read(dev, tr, 0, MII_PHY_ID1);
1575 printk(KERN_DEBUG "%s: PHY ID %04x %04x\n", dev->name,
1576 id0, id1);
1577 if (lp->option & TC35815_OPT_10M) {
1578 lp->linkspeed = 10;
1579 lp->fullduplex = (lp->option & TC35815_OPT_FULLDUP) != 0;
1580 } else if (lp->option & TC35815_OPT_100M) {
1581 lp->linkspeed = 100;
1582 lp->fullduplex = (lp->option & TC35815_OPT_FULLDUP) != 0;
1583 } else {
1584 /* auto negotiation */
1585 unsigned long neg_result;
1586 tc_phy_write(dev, MIICNTL_AUTO | MIICNTL_RST_AUTO, tr, 0, MII_CONTROL);
1587 printk(KERN_INFO "%s: Auto Negotiation...", dev->name);
1588 count = 0;
1589 while (!(tc_phy_read(dev, tr, 0, MII_STATUS) & MIISTAT_AUTO_DONE)) {
1590 if (count++ > 5000) {
1591 printk(" failed. Assume 10Mbps\n");
1592 lp->linkspeed = 10;
1593 lp->fullduplex = 0;
1594 goto done;
1595 }
1596 if (count % 512 == 0)
1597 printk(".");
1598 mdelay(1);
1599 }
1600 printk(" done.\n");
1601 neg_result = tc_phy_read(dev, tr, 0, MII_ANLPAR);
1602 if (neg_result & (MII_AN_TX_FDX | MII_AN_TX_HDX))
1603 lp->linkspeed = 100;
1604 else
1605 lp->linkspeed = 10;
1606 if (neg_result & (MII_AN_TX_FDX | MII_AN_10_FDX))
1607 lp->fullduplex = 1;
1608 else
1609 lp->fullduplex = 0;
1610 done:
1611 ;
1612 }
1613 }
1614
1615 ctl = 0;
1616 if (lp->linkspeed == 100)
1617 ctl |= MIICNTL_SPEED;
1618 if (lp->fullduplex)
1619 ctl |= MIICNTL_FDX;
1620 tc_phy_write(dev, ctl, tr, 0, MII_CONTROL);
1621
1622 if (lp->fullduplex) {
1623 tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_FullDup, &tr->MAC_Ctl);
1624 }
1625 }
1626
1627 static void tc35815_chip_reset(struct net_device *dev)
1628 {
1629 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1630
1631 /* reset the controller */
1632 tc_writel(MAC_Reset, &tr->MAC_Ctl);
1633 while (tc_readl(&tr->MAC_Ctl) & MAC_Reset)
1634 ;
1635
1636 tc_writel(0, &tr->MAC_Ctl);
1637
1638 /* initialize registers to default value */
1639 tc_writel(0, &tr->DMA_Ctl);
1640 tc_writel(0, &tr->TxThrsh);
1641 tc_writel(0, &tr->TxPollCtr);
1642 tc_writel(0, &tr->RxFragSize);
1643 tc_writel(0, &tr->Int_En);
1644 tc_writel(0, &tr->FDA_Bas);
1645 tc_writel(0, &tr->FDA_Lim);
1646 tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */
1647 tc_writel(0, &tr->CAM_Ctl);
1648 tc_writel(0, &tr->Tx_Ctl);
1649 tc_writel(0, &tr->Rx_Ctl);
1650 tc_writel(0, &tr->CAM_Ena);
1651 (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */
1652
1653 }
1654
1655 static void tc35815_chip_init(struct net_device *dev)
1656 {
1657 struct tc35815_local *lp = dev->priv;
1658 struct tc35815_regs *tr = (struct tc35815_regs*)dev->base_addr;
1659 unsigned long flags;
1660 unsigned long txctl = TX_CTL_CMD;
1661
1662 tc35815_phy_chip_init(dev);
1663
1664 /* load station address to CAM */
1665 tc35815_set_cam_entry(tr, CAM_ENTRY_SOURCE, dev->dev_addr);
1666
1667 /* Enable CAM (broadcast and unicast) */
1668 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
1669 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
1670
1671 spin_lock_irqsave(&lp->lock, flags);
1672
1673 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl);
1674
1675 tc_writel(RxFrag_EnPack | ETH_ZLEN, &tr->RxFragSize); /* Packing */
1676 tc_writel(0, &tr->TxPollCtr); /* Batch mode */
1677 tc_writel(TX_THRESHOLD, &tr->TxThrsh);
1678 tc_writel(INT_EN_CMD, &tr->Int_En);
1679
1680 /* set queues */
1681 tc_writel(virt_to_bus(lp->rfd_base), &tr->FDA_Bas);
1682 tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base,
1683 &tr->FDA_Lim);
1684 /*
1685 * Activation method:
1686 * First, enable eht MAC Transmitter and the DMA Receive circuits.
1687 * Then enable the DMA Transmitter and the MAC Receive circuits.
1688 */
1689 tc_writel(virt_to_bus(lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */
1690 tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */
1691 /* start MAC transmitter */
1692 /* WORKAROUND: ignore LostCrS in full duplex operation */
1693 if (lp->fullduplex)
1694 txctl = TX_CTL_CMD & ~Tx_EnLCarr;
1695 #ifdef GATHER_TXINT
1696 txctl &= ~Tx_EnComp; /* disable global tx completion int. */
1697 #endif
1698 tc_writel(txctl, &tr->Tx_Ctl);
1699 #if 0 /* No need to polling */
1700 tc_writel(virt_to_bus(lp->tfd_base), &tr->TxFrmPtr); /* start DMA transmitter */
1701 #endif
1702 spin_unlock_irqrestore(&lp->lock, flags);
1703 }
1704
1705 static struct pci_driver tc35815_driver = {
1706 .name = TC35815_MODULE_NAME,
1707 .probe = tc35815_probe,
1708 .remove = NULL,
1709 .id_table = tc35815_pci_tbl,
1710 };
1711
1712 static int __init tc35815_init_module(void)
1713 {
1714 return pci_register_driver(&tc35815_driver);
1715 }
1716
1717 static void __exit tc35815_cleanup_module(void)
1718 {
1719 struct net_device *next_dev;
1720
1721 /*
1722 * TODO: implement a tc35815_driver.remove hook, and
1723 * move this code into that function. Then, delete
1724 * all root_tc35815_dev list handling code.
1725 */
1726 while (root_tc35815_dev) {
1727 struct net_device *dev = root_tc35815_dev;
1728 next_dev = ((struct tc35815_local *)dev->priv)->next_module;
1729 iounmap((void *)(dev->base_addr));
1730 unregister_netdev(dev);
1731 free_netdev(dev);
1732 root_tc35815_dev = next_dev;
1733 }
1734
1735 pci_unregister_driver(&tc35815_driver);
1736 }
1737
1738 module_init(tc35815_init_module);
1739 module_exit(tc35815_cleanup_module);
Stable & featurefull patchset based on Linus's git branch