2 * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux.
4 * Based on skelton.c by Donald Becker.
6 * This driver is a replacement of older and less maintained version.
7 * This is a header of the older version:
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";
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
21 * (C) Copyright TOSHIBA CORPORATION 2004-2005
22 * All Rights Reserved.
26 #define DRV_VERSION "1.35-NAPI"
28 #define DRV_VERSION "1.35"
30 static const char *version
= "tc35815.c:v" DRV_VERSION
"\n";
31 #define MODNAME "tc35815"
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/fcntl.h>
37 #include <linux/interrupt.h>
38 #include <linux/ioport.h>
40 #include <linux/slab.h>
41 #include <linux/string.h>
42 #include <linux/spinlock.h>
43 #include <linux/errno.h>
44 #include <linux/init.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/delay.h>
49 #include <linux/pci.h>
50 #include <linux/mii.h>
51 #include <linux/ethtool.h>
53 #include <asm/byteorder.h>
55 /* First, a few definitions that the brave might change. */
57 #define GATHER_TXINT /* On-Demand Tx Interrupt */
58 #define WORKAROUND_LOSTCAR
59 #define WORKAROUND_100HALF_PROMISC
60 /* #define TC35815_USE_PACKEDBUFFER */
68 /* indexed by board_t, above */
71 } board_info
[] __devinitdata
= {
72 { "TOSHIBA TC35815CF 10/100BaseTX" },
73 { "TOSHIBA TC35815 with Wake on LAN" },
74 { "TOSHIBA TC35815/TX4939" },
77 static const struct pci_device_id tc35815_pci_tbl
[] = {
78 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815CF
), .driver_data
= TC35815CF
},
79 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU
), .driver_data
= TC35815_NWU
},
80 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939
), .driver_data
= TC35815_TX4939
},
83 MODULE_DEVICE_TABLE (pci
, tc35815_pci_tbl
);
85 /* see MODULE_PARM_DESC */
86 static struct tc35815_options
{
96 volatile __u32 DMA_Ctl
; /* 0x00 */
97 volatile __u32 TxFrmPtr
;
98 volatile __u32 TxThrsh
;
99 volatile __u32 TxPollCtr
;
100 volatile __u32 BLFrmPtr
;
101 volatile __u32 RxFragSize
;
102 volatile __u32 Int_En
;
103 volatile __u32 FDA_Bas
;
104 volatile __u32 FDA_Lim
; /* 0x20 */
105 volatile __u32 Int_Src
;
106 volatile __u32 unused0
[2];
107 volatile __u32 PauseCnt
;
108 volatile __u32 RemPauCnt
;
109 volatile __u32 TxCtlFrmStat
;
110 volatile __u32 unused1
;
111 volatile __u32 MAC_Ctl
; /* 0x40 */
112 volatile __u32 CAM_Ctl
;
113 volatile __u32 Tx_Ctl
;
114 volatile __u32 Tx_Stat
;
115 volatile __u32 Rx_Ctl
;
116 volatile __u32 Rx_Stat
;
117 volatile __u32 MD_Data
;
118 volatile __u32 MD_CA
;
119 volatile __u32 CAM_Adr
; /* 0x60 */
120 volatile __u32 CAM_Data
;
121 volatile __u32 CAM_Ena
;
122 volatile __u32 PROM_Ctl
;
123 volatile __u32 PROM_Data
;
124 volatile __u32 Algn_Cnt
;
125 volatile __u32 CRC_Cnt
;
126 volatile __u32 Miss_Cnt
;
132 /* DMA_Ctl bit asign ------------------------------------------------------- */
133 #define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */
134 #define DMA_RxAlign_1 0x00400000
135 #define DMA_RxAlign_2 0x00800000
136 #define DMA_RxAlign_3 0x00c00000
137 #define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */
138 #define DMA_IntMask 0x00040000 /* 1:Interupt mask */
139 #define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
140 #define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
141 #define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
142 #define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
143 #define DMA_TestMode 0x00002000 /* 1:Test Mode */
144 #define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
145 #define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
147 /* RxFragSize bit asign ---------------------------------------------------- */
148 #define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
149 #define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
151 /* MAC_Ctl bit asign ------------------------------------------------------- */
152 #define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */
153 #define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */
154 #define MAC_MissRoll 0x00000400 /* 1:Missed Roll */
155 #define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */
156 #define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */
157 #define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/
158 #define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */
159 #define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */
160 #define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */
161 #define MAC_Reset 0x00000004 /* 1:Software Reset */
162 #define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */
163 #define MAC_HaltReq 0x00000001 /* 1:Halt request */
165 /* PROM_Ctl bit asign ------------------------------------------------------ */
166 #define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */
167 #define PROM_Read 0x00004000 /*10:Read operation */
168 #define PROM_Write 0x00002000 /*01:Write operation */
169 #define PROM_Erase 0x00006000 /*11:Erase operation */
170 /*00:Enable or Disable Writting, */
171 /* as specified in PROM_Addr. */
172 #define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */
175 /* CAM_Ctl bit asign ------------------------------------------------------- */
176 #define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */
177 #define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/
179 #define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */
180 #define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */
181 #define CAM_StationAcc 0x00000001 /* 1:unicast accept */
183 /* CAM_Ena bit asign ------------------------------------------------------- */
184 #define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
185 #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
186 #define CAM_Ena_Bit(index) (1<<(index))
187 #define CAM_ENTRY_DESTINATION 0
188 #define CAM_ENTRY_SOURCE 1
189 #define CAM_ENTRY_MACCTL 20
191 /* Tx_Ctl bit asign -------------------------------------------------------- */
192 #define Tx_En 0x00000001 /* 1:Transmit enable */
193 #define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */
194 #define Tx_NoPad 0x00000004 /* 1:Suppress Padding */
195 #define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */
196 #define Tx_FBack 0x00000010 /* 1:Fast Back-off */
197 #define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */
198 #define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */
199 #define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */
200 #define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */
201 #define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */
202 #define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */
203 #define Tx_EnComp 0x00004000 /* 1:Enable Completion */
205 /* Tx_Stat bit asign ------------------------------------------------------- */
206 #define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */
207 #define Tx_ExColl 0x00000010 /* Excessive Collision */
208 #define Tx_TXDefer 0x00000020 /* Transmit Defered */
209 #define Tx_Paused 0x00000040 /* Transmit Paused */
210 #define Tx_IntTx 0x00000080 /* Interrupt on Tx */
211 #define Tx_Under 0x00000100 /* Underrun */
212 #define Tx_Defer 0x00000200 /* Deferral */
213 #define Tx_NCarr 0x00000400 /* No Carrier */
214 #define Tx_10Stat 0x00000800 /* 10Mbps Status */
215 #define Tx_LateColl 0x00001000 /* Late Collision */
216 #define Tx_TxPar 0x00002000 /* Tx Parity Error */
217 #define Tx_Comp 0x00004000 /* Completion */
218 #define Tx_Halted 0x00008000 /* Tx Halted */
219 #define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */
221 /* Rx_Ctl bit asign -------------------------------------------------------- */
222 #define Rx_EnGood 0x00004000 /* 1:Enable Good */
223 #define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */
224 #define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */
225 #define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */
226 #define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */
227 #define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */
228 #define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */
229 #define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */
230 #define Rx_ShortEn 0x00000008 /* 1:Short Enable */
231 #define Rx_LongEn 0x00000004 /* 1:Long Enable */
232 #define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */
233 #define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */
235 /* Rx_Stat bit asign ------------------------------------------------------- */
236 #define Rx_Halted 0x00008000 /* Rx Halted */
237 #define Rx_Good 0x00004000 /* Rx Good */
238 #define Rx_RxPar 0x00002000 /* Rx Parity Error */
239 /* 0x00001000 not use */
240 #define Rx_LongErr 0x00000800 /* Rx Long Error */
241 #define Rx_Over 0x00000400 /* Rx Overflow */
242 #define Rx_CRCErr 0x00000200 /* Rx CRC Error */
243 #define Rx_Align 0x00000100 /* Rx Alignment Error */
244 #define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */
245 #define Rx_IntRx 0x00000040 /* Rx Interrupt */
246 #define Rx_CtlRecd 0x00000020 /* Rx Control Receive */
248 #define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */
250 /* Int_En bit asign -------------------------------------------------------- */
251 #define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
252 #define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */
253 #define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
254 #define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
255 #define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
256 #define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
257 #define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
258 #define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
259 #define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
260 #define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
261 #define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
262 #define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
263 /* Exhausted Enable */
265 /* Int_Src bit asign ------------------------------------------------------- */
266 #define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
267 #define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
268 #define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
269 #define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
270 #define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
271 #define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
272 #define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
273 #define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
274 #define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
275 #define Int_SWInt 0x00000020 /* 1:Software request & Clear */
276 #define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
277 #define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
278 #define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
279 #define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
280 #define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
282 /* MD_CA bit asign --------------------------------------------------------- */
283 #define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
284 #define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
285 #define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
292 /* Frame descripter */
294 volatile __u32 FDNext
;
295 volatile __u32 FDSystem
;
296 volatile __u32 FDStat
;
297 volatile __u32 FDCtl
;
300 /* Buffer descripter */
302 volatile __u32 BuffData
;
303 volatile __u32 BDCtl
;
308 /* Frame Descripter bit asign ---------------------------------------------- */
309 #define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
310 #define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
311 #define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
312 #define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
313 #define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
314 #define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
315 #define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
316 #define FD_FrmOpt_Packing 0x04000000 /* Rx only */
317 #define FD_CownsFD 0x80000000 /* FD Controller owner bit */
318 #define FD_Next_EOL 0x00000001 /* FD EOL indicator */
319 #define FD_BDCnt_SHIFT 16
321 /* Buffer Descripter bit asign --------------------------------------------- */
322 #define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
323 #define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
324 #define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
325 #define BD_CownsBD 0x80000000 /* BD Controller owner bit */
326 #define BD_RxBDID_SHIFT 16
327 #define BD_RxBDSeqN_SHIFT 24
330 /* Some useful constants. */
331 #undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
333 #ifdef NO_CHECK_CARRIER
334 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
335 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
336 Tx_En) /* maybe 0x7b01 */
338 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
339 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
340 Tx_En) /* maybe 0x7b01 */
342 #define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
343 | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
344 #define INT_EN_CMD (Int_NRAbtEn | \
345 Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
346 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
348 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
349 #define DMA_CTL_CMD DMA_BURST_SIZE
350 #define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF)
352 /* Tuning parameters */
353 #define DMA_BURST_SIZE 32
354 #define TX_THRESHOLD 1024
355 #define TX_THRESHOLD_MAX 1536 /* used threshold with packet max byte for low pci transfer ability.*/
356 #define TX_THRESHOLD_KEEP_LIMIT 10 /* setting threshold max value when overrun error occured this count. */
358 /* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
359 #ifdef TC35815_USE_PACKEDBUFFER
360 #define FD_PAGE_NUM 2
361 #define RX_BUF_NUM 8 /* >= 2 */
362 #define RX_FD_NUM 250 /* >= 32 */
363 #define TX_FD_NUM 128
364 #define RX_BUF_SIZE PAGE_SIZE
365 #else /* TC35815_USE_PACKEDBUFFER */
366 #define FD_PAGE_NUM 4
367 #define RX_BUF_NUM 128 /* < 256 */
368 #define RX_FD_NUM 256 /* >= 32 */
369 #define TX_FD_NUM 128
370 #if RX_CTL_CMD & Rx_LongEn
371 #define RX_BUF_SIZE PAGE_SIZE
372 #elif RX_CTL_CMD & Rx_StripCRC
373 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 4 + 2, 32) /* +2: reserve */
375 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 2, 32) /* +2: reserve */
377 #endif /* TC35815_USE_PACKEDBUFFER */
378 #define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */
379 #define NAPI_WEIGHT 16
389 struct BDesc bd
[0]; /* variable length */
394 struct BDesc bd
[RX_BUF_NUM
];
398 #define tc_readl(addr) readl(addr)
399 #define tc_writel(d, addr) writel(d, addr)
401 #define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
403 /* Timer state engine. */
404 enum tc35815_timer_state
{
405 arbwait
= 0, /* Waiting for auto negotiation to complete. */
406 lupwait
= 1, /* Auto-neg complete, awaiting link-up status. */
407 ltrywait
= 2, /* Forcing try of all modes, from fastest to slowest. */
408 asleep
= 3, /* Time inactive. */
409 lcheck
= 4, /* Check link status. */
412 /* Information that need to be kept for each board. */
413 struct tc35815_local
{
414 struct pci_dev
*pci_dev
;
417 struct net_device_stats stats
;
425 /* Tx control lock. This protects the transmit buffer ring
426 * state along with the "tx full" state of the driver. This
427 * means all netif_queue flow control actions are protected
428 * by this lock as well.
434 unsigned short saved_lpa
;
435 struct timer_list timer
;
436 enum tc35815_timer_state timer_state
; /* State of auto-neg timer. */
437 unsigned int timer_ticks
; /* Number of clicks at each state */
440 * Transmitting: Batch Mode.
442 * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER)
443 * 1 circular FD for Free Buffer List.
444 * RX_BUF_NUM BD in Free Buffer FD.
445 * One Free Buffer BD has PAGE_SIZE data buffer.
446 * Or Non-Packing Mode.
447 * 1 circular FD for Free Buffer List.
448 * RX_BUF_NUM BD in Free Buffer FD.
449 * One Free Buffer BD has ETH_FRAME_LEN data buffer.
451 void * fd_buf
; /* for TxFD, RxFD, FrFD */
452 dma_addr_t fd_buf_dma
;
453 struct TxFD
*tfd_base
;
454 unsigned int tfd_start
;
455 unsigned int tfd_end
;
456 struct RxFD
*rfd_base
;
457 struct RxFD
*rfd_limit
;
458 struct RxFD
*rfd_cur
;
459 struct FrFD
*fbl_ptr
;
460 #ifdef TC35815_USE_PACKEDBUFFER
461 unsigned char fbl_curid
;
462 void * data_buf
[RX_BUF_NUM
]; /* packing */
463 dma_addr_t data_buf_dma
[RX_BUF_NUM
];
467 } tx_skbs
[TX_FD_NUM
];
469 unsigned int fbl_count
;
473 } tx_skbs
[TX_FD_NUM
], rx_skbs
[RX_BUF_NUM
];
475 struct mii_if_info mii
;
476 unsigned short mii_id
[2];
481 static inline dma_addr_t
fd_virt_to_bus(struct tc35815_local
*lp
, void *virt
)
483 return lp
->fd_buf_dma
+ ((u8
*)virt
- (u8
*)lp
->fd_buf
);
486 static inline void *fd_bus_to_virt(struct tc35815_local
*lp
, dma_addr_t bus
)
488 return (void *)((u8
*)lp
->fd_buf
+ (bus
- lp
->fd_buf_dma
));
491 #ifdef TC35815_USE_PACKEDBUFFER
492 static inline void *rxbuf_bus_to_virt(struct tc35815_local
*lp
, dma_addr_t bus
)
495 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
496 if (bus
>= lp
->data_buf_dma
[i
] &&
497 bus
< lp
->data_buf_dma
[i
] + PAGE_SIZE
)
498 return (void *)((u8
*)lp
->data_buf
[i
] +
499 (bus
- lp
->data_buf_dma
[i
]));
504 #define TC35815_DMA_SYNC_ONDEMAND
505 static void* alloc_rxbuf_page(struct pci_dev
*hwdev
, dma_addr_t
*dma_handle
)
507 #ifdef TC35815_DMA_SYNC_ONDEMAND
509 /* pci_map + pci_dma_sync will be more effective than
510 * pci_alloc_consistent on some archs. */
511 if ((buf
= (void *)__get_free_page(GFP_ATOMIC
)) == NULL
)
513 *dma_handle
= pci_map_single(hwdev
, buf
, PAGE_SIZE
,
515 if (pci_dma_mapping_error(*dma_handle
)) {
516 free_page((unsigned long)buf
);
521 return pci_alloc_consistent(hwdev
, PAGE_SIZE
, dma_handle
);
525 static void free_rxbuf_page(struct pci_dev
*hwdev
, void *buf
, dma_addr_t dma_handle
)
527 #ifdef TC35815_DMA_SYNC_ONDEMAND
528 pci_unmap_single(hwdev
, dma_handle
, PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
529 free_page((unsigned long)buf
);
531 pci_free_consistent(hwdev
, PAGE_SIZE
, buf
, dma_handle
);
534 #else /* TC35815_USE_PACKEDBUFFER */
535 static struct sk_buff
*alloc_rxbuf_skb(struct net_device
*dev
,
536 struct pci_dev
*hwdev
,
537 dma_addr_t
*dma_handle
)
540 skb
= dev_alloc_skb(RX_BUF_SIZE
);
544 *dma_handle
= pci_map_single(hwdev
, skb
->data
, RX_BUF_SIZE
,
546 if (pci_dma_mapping_error(*dma_handle
)) {
547 dev_kfree_skb_any(skb
);
550 skb_reserve(skb
, 2); /* make IP header 4byte aligned */
554 static void free_rxbuf_skb(struct pci_dev
*hwdev
, struct sk_buff
*skb
, dma_addr_t dma_handle
)
556 pci_unmap_single(hwdev
, dma_handle
, RX_BUF_SIZE
,
558 dev_kfree_skb_any(skb
);
560 #endif /* TC35815_USE_PACKEDBUFFER */
562 /* Index to functions, as function prototypes. */
564 static int tc35815_open(struct net_device
*dev
);
565 static int tc35815_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
566 static irqreturn_t
tc35815_interrupt(int irq
, void *dev_id
);
568 static int tc35815_rx(struct net_device
*dev
, int limit
);
569 static int tc35815_poll(struct net_device
*dev
, int *budget
);
571 static void tc35815_rx(struct net_device
*dev
);
573 static void tc35815_txdone(struct net_device
*dev
);
574 static int tc35815_close(struct net_device
*dev
);
575 static struct net_device_stats
*tc35815_get_stats(struct net_device
*dev
);
576 static void tc35815_set_multicast_list(struct net_device
*dev
);
577 static void tc35815_tx_timeout(struct net_device
*dev
);
578 static int tc35815_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
579 #ifdef CONFIG_NET_POLL_CONTROLLER
580 static void tc35815_poll_controller(struct net_device
*dev
);
582 static const struct ethtool_ops tc35815_ethtool_ops
;
584 /* Example routines you must write ;->. */
585 static void tc35815_chip_reset(struct net_device
*dev
);
586 static void tc35815_chip_init(struct net_device
*dev
);
587 static void tc35815_find_phy(struct net_device
*dev
);
588 static void tc35815_phy_chip_init(struct net_device
*dev
);
591 static void panic_queues(struct net_device
*dev
);
594 static void tc35815_timer(unsigned long data
);
595 static void tc35815_start_auto_negotiation(struct net_device
*dev
,
596 struct ethtool_cmd
*ep
);
597 static int tc_mdio_read(struct net_device
*dev
, int phy_id
, int location
);
598 static void tc_mdio_write(struct net_device
*dev
, int phy_id
, int location
,
601 static void __devinit
tc35815_init_dev_addr (struct net_device
*dev
)
603 struct tc35815_regs __iomem
*tr
=
604 (struct tc35815_regs __iomem
*)dev
->base_addr
;
607 /* dev_addr will be overwritten on NETDEV_REGISTER event */
608 while (tc_readl(&tr
->PROM_Ctl
) & PROM_Busy
)
610 for (i
= 0; i
< 6; i
+= 2) {
612 tc_writel(PROM_Busy
| PROM_Read
| (i
/ 2 + 2), &tr
->PROM_Ctl
);
613 while (tc_readl(&tr
->PROM_Ctl
) & PROM_Busy
)
615 data
= tc_readl(&tr
->PROM_Data
);
616 dev
->dev_addr
[i
] = data
& 0xff;
617 dev
->dev_addr
[i
+1] = data
>> 8;
621 static int __devinit
tc35815_init_one (struct pci_dev
*pdev
,
622 const struct pci_device_id
*ent
)
624 void __iomem
*ioaddr
= NULL
;
625 struct net_device
*dev
;
626 struct tc35815_local
*lp
;
628 unsigned long mmio_start
, mmio_end
, mmio_flags
, mmio_len
;
630 static int printed_version
;
631 if (!printed_version
++) {
633 dev_printk(KERN_DEBUG
, &pdev
->dev
,
634 "speed:%d duplex:%d doforce:%d\n",
635 options
.speed
, options
.duplex
, options
.doforce
);
639 dev_warn(&pdev
->dev
, "no IRQ assigned.\n");
643 /* dev zeroed in alloc_etherdev */
644 dev
= alloc_etherdev (sizeof (*lp
));
646 dev_err(&pdev
->dev
, "unable to alloc new ethernet\n");
649 SET_MODULE_OWNER(dev
);
650 SET_NETDEV_DEV(dev
, &pdev
->dev
);
653 /* enable device (incl. PCI PM wakeup), and bus-mastering */
654 rc
= pci_enable_device (pdev
);
658 mmio_start
= pci_resource_start (pdev
, 1);
659 mmio_end
= pci_resource_end (pdev
, 1);
660 mmio_flags
= pci_resource_flags (pdev
, 1);
661 mmio_len
= pci_resource_len (pdev
, 1);
663 /* set this immediately, we need to know before
664 * we talk to the chip directly */
666 /* make sure PCI base addr 1 is MMIO */
667 if (!(mmio_flags
& IORESOURCE_MEM
)) {
668 dev_err(&pdev
->dev
, "region #1 not an MMIO resource, aborting\n");
673 /* check for weird/broken PCI region reporting */
674 if ((mmio_len
< sizeof(struct tc35815_regs
))) {
675 dev_err(&pdev
->dev
, "Invalid PCI region size(s), aborting\n");
680 rc
= pci_request_regions (pdev
, MODNAME
);
684 pci_set_master (pdev
);
686 /* ioremap MMIO region */
687 ioaddr
= ioremap (mmio_start
, mmio_len
);
688 if (ioaddr
== NULL
) {
689 dev_err(&pdev
->dev
, "cannot remap MMIO, aborting\n");
691 goto err_out_free_res
;
694 /* Initialize the device structure. */
695 dev
->open
= tc35815_open
;
696 dev
->hard_start_xmit
= tc35815_send_packet
;
697 dev
->stop
= tc35815_close
;
698 dev
->get_stats
= tc35815_get_stats
;
699 dev
->set_multicast_list
= tc35815_set_multicast_list
;
700 dev
->do_ioctl
= tc35815_ioctl
;
701 dev
->ethtool_ops
= &tc35815_ethtool_ops
;
702 dev
->tx_timeout
= tc35815_tx_timeout
;
703 dev
->watchdog_timeo
= TC35815_TX_TIMEOUT
;
705 dev
->poll
= tc35815_poll
;
706 dev
->weight
= NAPI_WEIGHT
;
708 #ifdef CONFIG_NET_POLL_CONTROLLER
709 dev
->poll_controller
= tc35815_poll_controller
;
712 dev
->irq
= pdev
->irq
;
713 dev
->base_addr
= (unsigned long) ioaddr
;
715 /* dev->priv/lp zeroed and aligned in alloc_etherdev */
717 spin_lock_init(&lp
->lock
);
719 lp
->boardtype
= ent
->driver_data
;
721 lp
->msg_enable
= NETIF_MSG_TX_ERR
| NETIF_MSG_HW
| NETIF_MSG_DRV
| NETIF_MSG_LINK
;
722 pci_set_drvdata(pdev
, dev
);
724 /* Soft reset the chip. */
725 tc35815_chip_reset(dev
);
727 /* Retrieve the ethernet address. */
728 tc35815_init_dev_addr(dev
);
730 rc
= register_netdev (dev
);
734 memcpy(dev
->perm_addr
, dev
->dev_addr
, dev
->addr_len
);
735 printk(KERN_INFO
"%s: %s at 0x%lx, "
736 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
739 board_info
[ent
->driver_data
].name
,
741 dev
->dev_addr
[0], dev
->dev_addr
[1],
742 dev
->dev_addr
[2], dev
->dev_addr
[3],
743 dev
->dev_addr
[4], dev
->dev_addr
[5],
746 setup_timer(&lp
->timer
, tc35815_timer
, (unsigned long) dev
);
748 lp
->mii
.mdio_read
= tc_mdio_read
;
749 lp
->mii
.mdio_write
= tc_mdio_write
;
750 lp
->mii
.phy_id_mask
= 0x1f;
751 lp
->mii
.reg_num_mask
= 0x1f;
752 tc35815_find_phy(dev
);
753 lp
->mii
.phy_id
= lp
->phy_addr
;
754 lp
->mii
.full_duplex
= 0;
755 lp
->mii
.force_media
= 0;
762 pci_release_regions (pdev
);
769 static void __devexit
tc35815_remove_one (struct pci_dev
*pdev
)
771 struct net_device
*dev
= pci_get_drvdata (pdev
);
772 unsigned long mmio_addr
;
774 mmio_addr
= dev
->base_addr
;
776 unregister_netdev (dev
);
779 iounmap ((void __iomem
*)mmio_addr
);
780 pci_release_regions (pdev
);
785 pci_set_drvdata (pdev
, NULL
);
789 tc35815_init_queues(struct net_device
*dev
)
791 struct tc35815_local
*lp
= dev
->priv
;
793 unsigned long fd_addr
;
796 BUG_ON(sizeof(struct FDesc
) +
797 sizeof(struct BDesc
) * RX_BUF_NUM
+
798 sizeof(struct FDesc
) * RX_FD_NUM
+
799 sizeof(struct TxFD
) * TX_FD_NUM
>
800 PAGE_SIZE
* FD_PAGE_NUM
);
802 if ((lp
->fd_buf
= pci_alloc_consistent(lp
->pci_dev
, PAGE_SIZE
* FD_PAGE_NUM
, &lp
->fd_buf_dma
)) == 0)
804 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
805 #ifdef TC35815_USE_PACKEDBUFFER
806 if ((lp
->data_buf
[i
] = alloc_rxbuf_page(lp
->pci_dev
, &lp
->data_buf_dma
[i
])) == NULL
) {
808 free_rxbuf_page(lp
->pci_dev
,
810 lp
->data_buf_dma
[i
]);
811 lp
->data_buf
[i
] = NULL
;
813 pci_free_consistent(lp
->pci_dev
,
814 PAGE_SIZE
* FD_PAGE_NUM
,
822 alloc_rxbuf_skb(dev
, lp
->pci_dev
,
823 &lp
->rx_skbs
[i
].skb_dma
);
824 if (!lp
->rx_skbs
[i
].skb
) {
826 free_rxbuf_skb(lp
->pci_dev
,
828 lp
->rx_skbs
[i
].skb_dma
);
829 lp
->rx_skbs
[i
].skb
= NULL
;
831 pci_free_consistent(lp
->pci_dev
,
832 PAGE_SIZE
* FD_PAGE_NUM
,
840 printk(KERN_DEBUG
"%s: FD buf %p DataBuf",
841 dev
->name
, lp
->fd_buf
);
842 #ifdef TC35815_USE_PACKEDBUFFER
844 for (i
= 0; i
< RX_BUF_NUM
; i
++)
845 printk(" %p", lp
->data_buf
[i
]);
849 for (i
= 0; i
< FD_PAGE_NUM
; i
++) {
850 clear_page((void *)((unsigned long)lp
->fd_buf
+ i
* PAGE_SIZE
));
853 fd_addr
= (unsigned long)lp
->fd_buf
;
855 /* Free Descriptors (for Receive) */
856 lp
->rfd_base
= (struct RxFD
*)fd_addr
;
857 fd_addr
+= sizeof(struct RxFD
) * RX_FD_NUM
;
858 for (i
= 0; i
< RX_FD_NUM
; i
++) {
859 lp
->rfd_base
[i
].fd
.FDCtl
= cpu_to_le32(FD_CownsFD
);
861 lp
->rfd_cur
= lp
->rfd_base
;
862 lp
->rfd_limit
= (struct RxFD
*)fd_addr
- (RX_FD_RESERVE
+ 1);
864 /* Transmit Descriptors */
865 lp
->tfd_base
= (struct TxFD
*)fd_addr
;
866 fd_addr
+= sizeof(struct TxFD
) * TX_FD_NUM
;
867 for (i
= 0; i
< TX_FD_NUM
; i
++) {
868 lp
->tfd_base
[i
].fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, &lp
->tfd_base
[i
+1]));
869 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
870 lp
->tfd_base
[i
].fd
.FDCtl
= cpu_to_le32(0);
872 lp
->tfd_base
[TX_FD_NUM
-1].fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, &lp
->tfd_base
[0]));
876 /* Buffer List (for Receive) */
877 lp
->fbl_ptr
= (struct FrFD
*)fd_addr
;
878 lp
->fbl_ptr
->fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, lp
->fbl_ptr
));
879 lp
->fbl_ptr
->fd
.FDCtl
= cpu_to_le32(RX_BUF_NUM
| FD_CownsFD
);
880 #ifndef TC35815_USE_PACKEDBUFFER
882 * move all allocated skbs to head of rx_skbs[] array.
883 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
884 * tc35815_rx() had failed.
887 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
888 if (lp
->rx_skbs
[i
].skb
) {
889 if (i
!= lp
->fbl_count
) {
890 lp
->rx_skbs
[lp
->fbl_count
].skb
=
892 lp
->rx_skbs
[lp
->fbl_count
].skb_dma
=
893 lp
->rx_skbs
[i
].skb_dma
;
899 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
900 #ifdef TC35815_USE_PACKEDBUFFER
901 lp
->fbl_ptr
->bd
[i
].BuffData
= cpu_to_le32(lp
->data_buf_dma
[i
]);
903 if (i
>= lp
->fbl_count
) {
904 lp
->fbl_ptr
->bd
[i
].BuffData
= 0;
905 lp
->fbl_ptr
->bd
[i
].BDCtl
= 0;
908 lp
->fbl_ptr
->bd
[i
].BuffData
=
909 cpu_to_le32(lp
->rx_skbs
[i
].skb_dma
);
911 /* BDID is index of FrFD.bd[] */
912 lp
->fbl_ptr
->bd
[i
].BDCtl
=
913 cpu_to_le32(BD_CownsBD
| (i
<< BD_RxBDID_SHIFT
) |
916 #ifdef TC35815_USE_PACKEDBUFFER
920 printk(KERN_DEBUG
"%s: TxFD %p RxFD %p FrFD %p\n",
921 dev
->name
, lp
->tfd_base
, lp
->rfd_base
, lp
->fbl_ptr
);
926 tc35815_clear_queues(struct net_device
*dev
)
928 struct tc35815_local
*lp
= dev
->priv
;
931 for (i
= 0; i
< TX_FD_NUM
; i
++) {
932 u32 fdsystem
= le32_to_cpu(lp
->tfd_base
[i
].fd
.FDSystem
);
933 struct sk_buff
*skb
=
934 fdsystem
!= 0xffffffff ?
935 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
937 if (lp
->tx_skbs
[i
].skb
!= skb
) {
938 printk("%s: tx_skbs mismatch(%d).\n", dev
->name
, i
);
942 BUG_ON(lp
->tx_skbs
[i
].skb
!= skb
);
945 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[i
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
946 lp
->tx_skbs
[i
].skb
= NULL
;
947 lp
->tx_skbs
[i
].skb_dma
= 0;
948 dev_kfree_skb_any(skb
);
950 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
953 tc35815_init_queues(dev
);
957 tc35815_free_queues(struct net_device
*dev
)
959 struct tc35815_local
*lp
= dev
->priv
;
963 for (i
= 0; i
< TX_FD_NUM
; i
++) {
964 u32 fdsystem
= le32_to_cpu(lp
->tfd_base
[i
].fd
.FDSystem
);
965 struct sk_buff
*skb
=
966 fdsystem
!= 0xffffffff ?
967 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
969 if (lp
->tx_skbs
[i
].skb
!= skb
) {
970 printk("%s: tx_skbs mismatch(%d).\n", dev
->name
, i
);
974 BUG_ON(lp
->tx_skbs
[i
].skb
!= skb
);
978 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[i
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
979 lp
->tx_skbs
[i
].skb
= NULL
;
980 lp
->tx_skbs
[i
].skb_dma
= 0;
982 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
987 lp
->rfd_limit
= NULL
;
991 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
992 #ifdef TC35815_USE_PACKEDBUFFER
993 if (lp
->data_buf
[i
]) {
994 free_rxbuf_page(lp
->pci_dev
,
995 lp
->data_buf
[i
], lp
->data_buf_dma
[i
]);
996 lp
->data_buf
[i
] = NULL
;
999 if (lp
->rx_skbs
[i
].skb
) {
1000 free_rxbuf_skb(lp
->pci_dev
, lp
->rx_skbs
[i
].skb
,
1001 lp
->rx_skbs
[i
].skb_dma
);
1002 lp
->rx_skbs
[i
].skb
= NULL
;
1007 pci_free_consistent(lp
->pci_dev
, PAGE_SIZE
* FD_PAGE_NUM
,
1008 lp
->fd_buf
, lp
->fd_buf_dma
);
1014 dump_txfd(struct TxFD
*fd
)
1016 printk("TxFD(%p): %08x %08x %08x %08x\n", fd
,
1017 le32_to_cpu(fd
->fd
.FDNext
),
1018 le32_to_cpu(fd
->fd
.FDSystem
),
1019 le32_to_cpu(fd
->fd
.FDStat
),
1020 le32_to_cpu(fd
->fd
.FDCtl
));
1022 printk(" %08x %08x",
1023 le32_to_cpu(fd
->bd
.BuffData
),
1024 le32_to_cpu(fd
->bd
.BDCtl
));
1029 dump_rxfd(struct RxFD
*fd
)
1031 int i
, bd_count
= (le32_to_cpu(fd
->fd
.FDCtl
) & FD_BDCnt_MASK
) >> FD_BDCnt_SHIFT
;
1034 printk("RxFD(%p): %08x %08x %08x %08x\n", fd
,
1035 le32_to_cpu(fd
->fd
.FDNext
),
1036 le32_to_cpu(fd
->fd
.FDSystem
),
1037 le32_to_cpu(fd
->fd
.FDStat
),
1038 le32_to_cpu(fd
->fd
.FDCtl
));
1039 if (le32_to_cpu(fd
->fd
.FDCtl
) & FD_CownsFD
)
1042 for (i
= 0; i
< bd_count
; i
++)
1043 printk(" %08x %08x",
1044 le32_to_cpu(fd
->bd
[i
].BuffData
),
1045 le32_to_cpu(fd
->bd
[i
].BDCtl
));
1050 #if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER)
1052 dump_frfd(struct FrFD
*fd
)
1055 printk("FrFD(%p): %08x %08x %08x %08x\n", fd
,
1056 le32_to_cpu(fd
->fd
.FDNext
),
1057 le32_to_cpu(fd
->fd
.FDSystem
),
1058 le32_to_cpu(fd
->fd
.FDStat
),
1059 le32_to_cpu(fd
->fd
.FDCtl
));
1061 for (i
= 0; i
< RX_BUF_NUM
; i
++)
1062 printk(" %08x %08x",
1063 le32_to_cpu(fd
->bd
[i
].BuffData
),
1064 le32_to_cpu(fd
->bd
[i
].BDCtl
));
1071 panic_queues(struct net_device
*dev
)
1073 struct tc35815_local
*lp
= dev
->priv
;
1076 printk("TxFD base %p, start %u, end %u\n",
1077 lp
->tfd_base
, lp
->tfd_start
, lp
->tfd_end
);
1078 printk("RxFD base %p limit %p cur %p\n",
1079 lp
->rfd_base
, lp
->rfd_limit
, lp
->rfd_cur
);
1080 printk("FrFD %p\n", lp
->fbl_ptr
);
1081 for (i
= 0; i
< TX_FD_NUM
; i
++)
1082 dump_txfd(&lp
->tfd_base
[i
]);
1083 for (i
= 0; i
< RX_FD_NUM
; i
++) {
1084 int bd_count
= dump_rxfd(&lp
->rfd_base
[i
]);
1085 i
+= (bd_count
+ 1) / 2; /* skip BDs */
1087 dump_frfd(lp
->fbl_ptr
);
1088 panic("%s: Illegal queue state.", dev
->name
);
1092 static void print_eth(char *add
)
1096 printk("print_eth(%p)\n", add
);
1097 for (i
= 0; i
< 6; i
++)
1098 printk(" %2.2X", (unsigned char) add
[i
+ 6]);
1100 for (i
= 0; i
< 6; i
++)
1101 printk(" %2.2X", (unsigned char) add
[i
]);
1102 printk(" : %2.2X%2.2X\n", (unsigned char) add
[12], (unsigned char) add
[13]);
1105 static int tc35815_tx_full(struct net_device
*dev
)
1107 struct tc35815_local
*lp
= dev
->priv
;
1108 return ((lp
->tfd_start
+ 1) % TX_FD_NUM
== lp
->tfd_end
);
1111 static void tc35815_restart(struct net_device
*dev
)
1113 struct tc35815_local
*lp
= dev
->priv
;
1114 int pid
= lp
->phy_addr
;
1115 int do_phy_reset
= 1;
1116 del_timer(&lp
->timer
); /* Kill if running */
1118 if (lp
->mii_id
[0] == 0x0016 && (lp
->mii_id
[1] & 0xfc00) == 0xf800) {
1119 /* Resetting PHY cause problem on some chip... (SEEQ 80221) */
1124 tc_mdio_write(dev
, pid
, MII_BMCR
, BMCR_RESET
);
1127 if (!(tc_mdio_read(dev
, pid
, MII_BMCR
) & BMCR_RESET
))
1132 printk(KERN_ERR
"%s: BMCR reset failed.\n", dev
->name
);
1135 tc35815_chip_reset(dev
);
1136 tc35815_clear_queues(dev
);
1137 tc35815_chip_init(dev
);
1138 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1139 tc35815_set_multicast_list(dev
);
1142 static void tc35815_tx_timeout(struct net_device
*dev
)
1144 struct tc35815_local
*lp
= dev
->priv
;
1145 struct tc35815_regs __iomem
*tr
=
1146 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1148 printk(KERN_WARNING
"%s: transmit timed out, status %#x\n",
1149 dev
->name
, tc_readl(&tr
->Tx_Stat
));
1151 /* Try to restart the adaptor. */
1152 spin_lock_irq(&lp
->lock
);
1153 tc35815_restart(dev
);
1154 spin_unlock_irq(&lp
->lock
);
1156 lp
->stats
.tx_errors
++;
1158 /* If we have space available to accept new transmit
1159 * requests, wake up the queueing layer. This would
1160 * be the case if the chipset_init() call above just
1161 * flushes out the tx queue and empties it.
1163 * If instead, the tx queue is retained then the
1164 * netif_wake_queue() call should be placed in the
1165 * TX completion interrupt handler of the driver instead
1168 if (!tc35815_tx_full(dev
))
1169 netif_wake_queue(dev
);
1173 * Open/initialize the board. This is called (in the current kernel)
1174 * sometime after booting when the 'ifconfig' program is run.
1176 * This routine should set everything up anew at each open, even
1177 * registers that "should" only need to be set once at boot, so that
1178 * there is non-reboot way to recover if something goes wrong.
1181 tc35815_open(struct net_device
*dev
)
1183 struct tc35815_local
*lp
= dev
->priv
;
1186 * This is used if the interrupt line can turned off (shared).
1187 * See 3c503.c for an example of selecting the IRQ at config-time.
1189 if (request_irq(dev
->irq
, &tc35815_interrupt
, IRQF_SHARED
, dev
->name
, dev
)) {
1193 del_timer(&lp
->timer
); /* Kill if running */
1194 tc35815_chip_reset(dev
);
1196 if (tc35815_init_queues(dev
) != 0) {
1197 free_irq(dev
->irq
, dev
);
1201 /* Reset the hardware here. Don't forget to set the station address. */
1202 spin_lock_irq(&lp
->lock
);
1203 tc35815_chip_init(dev
);
1204 spin_unlock_irq(&lp
->lock
);
1206 /* We are now ready to accept transmit requeusts from
1207 * the queueing layer of the networking.
1209 netif_start_queue(dev
);
1214 /* This will only be invoked if your driver is _not_ in XOFF state.
1215 * What this means is that you need not check it, and that this
1216 * invariant will hold if you make sure that the netif_*_queue()
1217 * calls are done at the proper times.
1219 static int tc35815_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1221 struct tc35815_local
*lp
= dev
->priv
;
1223 unsigned long flags
;
1225 /* If some error occurs while trying to transmit this
1226 * packet, you should return '1' from this function.
1227 * In such a case you _may not_ do anything to the
1228 * SKB, it is still owned by the network queueing
1229 * layer when an error is returned. This means you
1230 * may not modify any SKB fields, you may not free
1234 /* This is the most common case for modern hardware.
1235 * The spinlock protects this code from the TX complete
1236 * hardware interrupt handler. Queue flow control is
1237 * thus managed under this lock as well.
1239 spin_lock_irqsave(&lp
->lock
, flags
);
1241 /* failsafe... (handle txdone now if half of FDs are used) */
1242 if ((lp
->tfd_start
+ TX_FD_NUM
- lp
->tfd_end
) % TX_FD_NUM
>
1244 tc35815_txdone(dev
);
1246 if (netif_msg_pktdata(lp
))
1247 print_eth(skb
->data
);
1249 if (lp
->tx_skbs
[lp
->tfd_start
].skb
) {
1250 printk("%s: tx_skbs conflict.\n", dev
->name
);
1254 BUG_ON(lp
->tx_skbs
[lp
->tfd_start
].skb
);
1256 lp
->tx_skbs
[lp
->tfd_start
].skb
= skb
;
1257 lp
->tx_skbs
[lp
->tfd_start
].skb_dma
= pci_map_single(lp
->pci_dev
, skb
->data
, skb
->len
, PCI_DMA_TODEVICE
);
1260 txfd
= &lp
->tfd_base
[lp
->tfd_start
];
1261 txfd
->bd
.BuffData
= cpu_to_le32(lp
->tx_skbs
[lp
->tfd_start
].skb_dma
);
1262 txfd
->bd
.BDCtl
= cpu_to_le32(skb
->len
);
1263 txfd
->fd
.FDSystem
= cpu_to_le32(lp
->tfd_start
);
1264 txfd
->fd
.FDCtl
= cpu_to_le32(FD_CownsFD
| (1 << FD_BDCnt_SHIFT
));
1266 if (lp
->tfd_start
== lp
->tfd_end
) {
1267 struct tc35815_regs __iomem
*tr
=
1268 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1269 /* Start DMA Transmitter. */
1270 txfd
->fd
.FDNext
|= cpu_to_le32(FD_Next_EOL
);
1272 txfd
->fd
.FDCtl
|= cpu_to_le32(FD_FrmOpt_IntTx
);
1274 if (netif_msg_tx_queued(lp
)) {
1275 printk("%s: starting TxFD.\n", dev
->name
);
1278 tc_writel(fd_virt_to_bus(lp
, txfd
), &tr
->TxFrmPtr
);
1280 txfd
->fd
.FDNext
&= cpu_to_le32(~FD_Next_EOL
);
1281 if (netif_msg_tx_queued(lp
)) {
1282 printk("%s: queueing TxFD.\n", dev
->name
);
1286 lp
->tfd_start
= (lp
->tfd_start
+ 1) % TX_FD_NUM
;
1288 dev
->trans_start
= jiffies
;
1290 /* If we just used up the very last entry in the
1291 * TX ring on this device, tell the queueing
1292 * layer to send no more.
1294 if (tc35815_tx_full(dev
)) {
1295 if (netif_msg_tx_queued(lp
))
1296 printk(KERN_WARNING
"%s: TxFD Exhausted.\n", dev
->name
);
1297 netif_stop_queue(dev
);
1300 /* When the TX completion hw interrupt arrives, this
1301 * is when the transmit statistics are updated.
1304 spin_unlock_irqrestore(&lp
->lock
, flags
);
1308 #define FATAL_ERROR_INT \
1309 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
1310 static void tc35815_fatal_error_interrupt(struct net_device
*dev
, u32 status
)
1313 printk(KERN_WARNING
"%s: Fatal Error Intterrupt (%#x):",
1315 if (status
& Int_IntPCI
)
1317 if (status
& Int_DmParErr
)
1318 printk(" DmParErr");
1319 if (status
& Int_IntNRAbt
)
1320 printk(" IntNRAbt");
1323 panic("%s: Too many fatal errors.", dev
->name
);
1324 printk(KERN_WARNING
"%s: Resetting ...\n", dev
->name
);
1325 /* Try to restart the adaptor. */
1326 tc35815_restart(dev
);
1330 static int tc35815_do_interrupt(struct net_device
*dev
, u32 status
, int limit
)
1332 static int tc35815_do_interrupt(struct net_device
*dev
, u32 status
)
1335 struct tc35815_local
*lp
= dev
->priv
;
1336 struct tc35815_regs __iomem
*tr
=
1337 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1340 /* Fatal errors... */
1341 if (status
& FATAL_ERROR_INT
) {
1342 tc35815_fatal_error_interrupt(dev
, status
);
1345 /* recoverable errors */
1346 if (status
& Int_IntFDAEx
) {
1347 /* disable FDAEx int. (until we make rooms...) */
1348 tc_writel(tc_readl(&tr
->Int_En
) & ~Int_FDAExEn
, &tr
->Int_En
);
1350 "%s: Free Descriptor Area Exhausted (%#x).\n",
1352 lp
->stats
.rx_dropped
++;
1355 if (status
& Int_IntBLEx
) {
1356 /* disable BLEx int. (until we make rooms...) */
1357 tc_writel(tc_readl(&tr
->Int_En
) & ~Int_BLExEn
, &tr
->Int_En
);
1359 "%s: Buffer List Exhausted (%#x).\n",
1361 lp
->stats
.rx_dropped
++;
1364 if (status
& Int_IntExBD
) {
1366 "%s: Excessive Buffer Descriptiors (%#x).\n",
1368 lp
->stats
.rx_length_errors
++;
1372 /* normal notification */
1373 if (status
& Int_IntMacRx
) {
1374 /* Got a packet(s). */
1376 ret
= tc35815_rx(dev
, limit
);
1381 lp
->lstats
.rx_ints
++;
1383 if (status
& Int_IntMacTx
) {
1384 /* Transmit complete. */
1385 lp
->lstats
.tx_ints
++;
1386 tc35815_txdone(dev
);
1387 netif_wake_queue(dev
);
1394 * The typical workload of the driver:
1395 * Handle the network interface interrupts.
1397 static irqreturn_t
tc35815_interrupt(int irq
, void *dev_id
)
1399 struct net_device
*dev
= dev_id
;
1400 struct tc35815_regs __iomem
*tr
=
1401 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1403 u32 dmactl
= tc_readl(&tr
->DMA_Ctl
);
1405 if (!(dmactl
& DMA_IntMask
)) {
1406 /* disable interrupts */
1407 tc_writel(dmactl
| DMA_IntMask
, &tr
->DMA_Ctl
);
1408 if (netif_rx_schedule_prep(dev
))
1409 __netif_rx_schedule(dev
);
1411 printk(KERN_ERR
"%s: interrupt taken in poll\n",
1415 (void)tc_readl(&tr
->Int_Src
); /* flush */
1420 struct tc35815_local
*lp
= dev
->priv
;
1424 spin_lock(&lp
->lock
);
1425 status
= tc_readl(&tr
->Int_Src
);
1426 tc_writel(status
, &tr
->Int_Src
); /* write to clear */
1427 handled
= tc35815_do_interrupt(dev
, status
);
1428 (void)tc_readl(&tr
->Int_Src
); /* flush */
1429 spin_unlock(&lp
->lock
);
1430 return IRQ_RETVAL(handled
>= 0);
1431 #endif /* TC35815_NAPI */
1434 #ifdef CONFIG_NET_POLL_CONTROLLER
1435 static void tc35815_poll_controller(struct net_device
*dev
)
1437 disable_irq(dev
->irq
);
1438 tc35815_interrupt(dev
->irq
, dev
);
1439 enable_irq(dev
->irq
);
1443 /* We have a good packet(s), get it/them out of the buffers. */
1446 tc35815_rx(struct net_device
*dev
, int limit
)
1449 tc35815_rx(struct net_device
*dev
)
1452 struct tc35815_local
*lp
= dev
->priv
;
1455 int buf_free_count
= 0;
1456 int fd_free_count
= 0;
1461 while (!((fdctl
= le32_to_cpu(lp
->rfd_cur
->fd
.FDCtl
)) & FD_CownsFD
)) {
1462 int status
= le32_to_cpu(lp
->rfd_cur
->fd
.FDStat
);
1463 int pkt_len
= fdctl
& FD_FDLength_MASK
;
1464 int bd_count
= (fdctl
& FD_BDCnt_MASK
) >> FD_BDCnt_SHIFT
;
1466 struct RxFD
*next_rfd
;
1468 #if (RX_CTL_CMD & Rx_StripCRC) == 0
1472 if (netif_msg_rx_status(lp
))
1473 dump_rxfd(lp
->rfd_cur
);
1474 if (status
& Rx_Good
) {
1475 struct sk_buff
*skb
;
1476 unsigned char *data
;
1478 #ifdef TC35815_USE_PACKEDBUFFER
1486 #ifdef TC35815_USE_PACKEDBUFFER
1487 BUG_ON(bd_count
> 2);
1488 skb
= dev_alloc_skb(pkt_len
+ 2); /* +2: for reserve */
1490 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n",
1492 lp
->stats
.rx_dropped
++;
1495 skb_reserve(skb
, 2); /* 16 bit alignment */
1497 data
= skb_put(skb
, pkt_len
);
1499 /* copy from receive buffer */
1502 while (offset
< pkt_len
&& cur_bd
< bd_count
) {
1503 int len
= le32_to_cpu(lp
->rfd_cur
->bd
[cur_bd
].BDCtl
) &
1505 dma_addr_t dma
= le32_to_cpu(lp
->rfd_cur
->bd
[cur_bd
].BuffData
);
1506 void *rxbuf
= rxbuf_bus_to_virt(lp
, dma
);
1507 if (offset
+ len
> pkt_len
)
1508 len
= pkt_len
- offset
;
1509 #ifdef TC35815_DMA_SYNC_ONDEMAND
1510 pci_dma_sync_single_for_cpu(lp
->pci_dev
,
1512 PCI_DMA_FROMDEVICE
);
1514 memcpy(data
+ offset
, rxbuf
, len
);
1515 #ifdef TC35815_DMA_SYNC_ONDEMAND
1516 pci_dma_sync_single_for_device(lp
->pci_dev
,
1518 PCI_DMA_FROMDEVICE
);
1523 #else /* TC35815_USE_PACKEDBUFFER */
1524 BUG_ON(bd_count
> 1);
1525 cur_bd
= (le32_to_cpu(lp
->rfd_cur
->bd
[0].BDCtl
)
1526 & BD_RxBDID_MASK
) >> BD_RxBDID_SHIFT
;
1528 if (cur_bd
>= RX_BUF_NUM
) {
1529 printk("%s: invalid BDID.\n", dev
->name
);
1532 BUG_ON(lp
->rx_skbs
[cur_bd
].skb_dma
!=
1533 (le32_to_cpu(lp
->rfd_cur
->bd
[0].BuffData
) & ~3));
1534 if (!lp
->rx_skbs
[cur_bd
].skb
) {
1535 printk("%s: NULL skb.\n", dev
->name
);
1539 BUG_ON(cur_bd
>= RX_BUF_NUM
);
1541 skb
= lp
->rx_skbs
[cur_bd
].skb
;
1542 prefetch(skb
->data
);
1543 lp
->rx_skbs
[cur_bd
].skb
= NULL
;
1545 pci_unmap_single(lp
->pci_dev
,
1546 lp
->rx_skbs
[cur_bd
].skb_dma
,
1547 RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1548 if (!HAVE_DMA_RXALIGN(lp
))
1549 memmove(skb
->data
, skb
->data
- 2, pkt_len
);
1550 data
= skb_put(skb
, pkt_len
);
1551 #endif /* TC35815_USE_PACKEDBUFFER */
1552 if (netif_msg_pktdata(lp
))
1554 skb
->protocol
= eth_type_trans(skb
, dev
);
1556 netif_receive_skb(skb
);
1561 dev
->last_rx
= jiffies
;
1562 lp
->stats
.rx_packets
++;
1563 lp
->stats
.rx_bytes
+= pkt_len
;
1565 lp
->stats
.rx_errors
++;
1566 printk(KERN_DEBUG
"%s: Rx error (status %x)\n",
1567 dev
->name
, status
& Rx_Stat_Mask
);
1568 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1569 if ((status
& Rx_LongErr
) && (status
& Rx_CRCErr
)) {
1570 status
&= ~(Rx_LongErr
|Rx_CRCErr
);
1573 if (status
& Rx_LongErr
) lp
->stats
.rx_length_errors
++;
1574 if (status
& Rx_Over
) lp
->stats
.rx_fifo_errors
++;
1575 if (status
& Rx_CRCErr
) lp
->stats
.rx_crc_errors
++;
1576 if (status
& Rx_Align
) lp
->stats
.rx_frame_errors
++;
1580 /* put Free Buffer back to controller */
1581 int bdctl
= le32_to_cpu(lp
->rfd_cur
->bd
[bd_count
- 1].BDCtl
);
1583 (bdctl
& BD_RxBDID_MASK
) >> BD_RxBDID_SHIFT
;
1585 if (id
>= RX_BUF_NUM
) {
1586 printk("%s: invalid BDID.\n", dev
->name
);
1590 BUG_ON(id
>= RX_BUF_NUM
);
1592 /* free old buffers */
1593 #ifdef TC35815_USE_PACKEDBUFFER
1594 while (lp
->fbl_curid
!= id
)
1596 while (lp
->fbl_count
< RX_BUF_NUM
)
1599 #ifdef TC35815_USE_PACKEDBUFFER
1600 unsigned char curid
= lp
->fbl_curid
;
1602 unsigned char curid
=
1603 (id
+ 1 + lp
->fbl_count
) % RX_BUF_NUM
;
1605 struct BDesc
*bd
= &lp
->fbl_ptr
->bd
[curid
];
1607 bdctl
= le32_to_cpu(bd
->BDCtl
);
1608 if (bdctl
& BD_CownsBD
) {
1609 printk("%s: Freeing invalid BD.\n",
1614 /* pass BD to controler */
1615 #ifndef TC35815_USE_PACKEDBUFFER
1616 if (!lp
->rx_skbs
[curid
].skb
) {
1617 lp
->rx_skbs
[curid
].skb
=
1618 alloc_rxbuf_skb(dev
,
1620 &lp
->rx_skbs
[curid
].skb_dma
);
1621 if (!lp
->rx_skbs
[curid
].skb
)
1622 break; /* try on next reception */
1623 bd
->BuffData
= cpu_to_le32(lp
->rx_skbs
[curid
].skb_dma
);
1625 #endif /* TC35815_USE_PACKEDBUFFER */
1626 /* Note: BDLength was modified by chip. */
1627 bd
->BDCtl
= cpu_to_le32(BD_CownsBD
|
1628 (curid
<< BD_RxBDID_SHIFT
) |
1630 #ifdef TC35815_USE_PACKEDBUFFER
1631 lp
->fbl_curid
= (curid
+ 1) % RX_BUF_NUM
;
1632 if (netif_msg_rx_status(lp
)) {
1633 printk("%s: Entering new FBD %d\n",
1634 dev
->name
, lp
->fbl_curid
);
1635 dump_frfd(lp
->fbl_ptr
);
1644 /* put RxFD back to controller */
1646 next_rfd
= fd_bus_to_virt(lp
,
1647 le32_to_cpu(lp
->rfd_cur
->fd
.FDNext
));
1648 if (next_rfd
< lp
->rfd_base
|| next_rfd
> lp
->rfd_limit
) {
1649 printk("%s: RxFD FDNext invalid.\n", dev
->name
);
1653 for (i
= 0; i
< (bd_count
+ 1) / 2 + 1; i
++) {
1654 /* pass FD to controler */
1656 lp
->rfd_cur
->fd
.FDNext
= cpu_to_le32(0xdeaddead);
1658 lp
->rfd_cur
->fd
.FDNext
= cpu_to_le32(FD_Next_EOL
);
1660 lp
->rfd_cur
->fd
.FDCtl
= cpu_to_le32(FD_CownsFD
);
1664 if (lp
->rfd_cur
> lp
->rfd_limit
)
1665 lp
->rfd_cur
= lp
->rfd_base
;
1667 if (lp
->rfd_cur
!= next_rfd
)
1668 printk("rfd_cur = %p, next_rfd %p\n",
1669 lp
->rfd_cur
, next_rfd
);
1673 /* re-enable BL/FDA Exhaust interrupts. */
1674 if (fd_free_count
) {
1675 struct tc35815_regs __iomem
*tr
=
1676 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1677 u32 en
, en_old
= tc_readl(&tr
->Int_En
);
1678 en
= en_old
| Int_FDAExEn
;
1682 tc_writel(en
, &tr
->Int_En
);
1691 tc35815_poll(struct net_device
*dev
, int *budget
)
1693 struct tc35815_local
*lp
= dev
->priv
;
1694 struct tc35815_regs __iomem
*tr
=
1695 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1696 int limit
= min(*budget
, dev
->quota
);
1697 int received
= 0, handled
;
1700 spin_lock(&lp
->lock
);
1701 status
= tc_readl(&tr
->Int_Src
);
1703 tc_writel(status
, &tr
->Int_Src
); /* write to clear */
1705 handled
= tc35815_do_interrupt(dev
, status
, limit
);
1707 received
+= handled
;
1712 status
= tc_readl(&tr
->Int_Src
);
1714 spin_unlock(&lp
->lock
);
1716 dev
->quota
-= received
;
1717 *budget
-= received
;
1721 netif_rx_complete(dev
);
1722 /* enable interrupts */
1723 tc_writel(tc_readl(&tr
->DMA_Ctl
) & ~DMA_IntMask
, &tr
->DMA_Ctl
);
1728 #ifdef NO_CHECK_CARRIER
1729 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1731 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1735 tc35815_check_tx_stat(struct net_device
*dev
, int status
)
1737 struct tc35815_local
*lp
= dev
->priv
;
1738 const char *msg
= NULL
;
1740 /* count collisions */
1741 if (status
& Tx_ExColl
)
1742 lp
->stats
.collisions
+= 16;
1743 if (status
& Tx_TxColl_MASK
)
1744 lp
->stats
.collisions
+= status
& Tx_TxColl_MASK
;
1746 #ifndef NO_CHECK_CARRIER
1747 /* TX4939 does not have NCarr */
1748 if (lp
->boardtype
== TC35815_TX4939
)
1749 status
&= ~Tx_NCarr
;
1750 #ifdef WORKAROUND_LOSTCAR
1751 /* WORKAROUND: ignore LostCrS in full duplex operation */
1752 if ((lp
->timer_state
!= asleep
&& lp
->timer_state
!= lcheck
)
1754 status
&= ~Tx_NCarr
;
1758 if (!(status
& TX_STA_ERR
)) {
1760 lp
->stats
.tx_packets
++;
1764 lp
->stats
.tx_errors
++;
1765 if (status
& Tx_ExColl
) {
1766 lp
->stats
.tx_aborted_errors
++;
1767 msg
= "Excessive Collision.";
1769 if (status
& Tx_Under
) {
1770 lp
->stats
.tx_fifo_errors
++;
1771 msg
= "Tx FIFO Underrun.";
1772 if (lp
->lstats
.tx_underrun
< TX_THRESHOLD_KEEP_LIMIT
) {
1773 lp
->lstats
.tx_underrun
++;
1774 if (lp
->lstats
.tx_underrun
>= TX_THRESHOLD_KEEP_LIMIT
) {
1775 struct tc35815_regs __iomem
*tr
=
1776 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1777 tc_writel(TX_THRESHOLD_MAX
, &tr
->TxThrsh
);
1778 msg
= "Tx FIFO Underrun.Change Tx threshold to max.";
1782 if (status
& Tx_Defer
) {
1783 lp
->stats
.tx_fifo_errors
++;
1784 msg
= "Excessive Deferral.";
1786 #ifndef NO_CHECK_CARRIER
1787 if (status
& Tx_NCarr
) {
1788 lp
->stats
.tx_carrier_errors
++;
1789 msg
= "Lost Carrier Sense.";
1792 if (status
& Tx_LateColl
) {
1793 lp
->stats
.tx_aborted_errors
++;
1794 msg
= "Late Collision.";
1796 if (status
& Tx_TxPar
) {
1797 lp
->stats
.tx_fifo_errors
++;
1798 msg
= "Transmit Parity Error.";
1800 if (status
& Tx_SQErr
) {
1801 lp
->stats
.tx_heartbeat_errors
++;
1802 msg
= "Signal Quality Error.";
1804 if (msg
&& netif_msg_tx_err(lp
))
1805 printk(KERN_WARNING
"%s: %s (%#x)\n", dev
->name
, msg
, status
);
1808 /* This handles TX complete events posted by the device
1812 tc35815_txdone(struct net_device
*dev
)
1814 struct tc35815_local
*lp
= dev
->priv
;
1818 txfd
= &lp
->tfd_base
[lp
->tfd_end
];
1819 while (lp
->tfd_start
!= lp
->tfd_end
&&
1820 !((fdctl
= le32_to_cpu(txfd
->fd
.FDCtl
)) & FD_CownsFD
)) {
1821 int status
= le32_to_cpu(txfd
->fd
.FDStat
);
1822 struct sk_buff
*skb
;
1823 unsigned long fdnext
= le32_to_cpu(txfd
->fd
.FDNext
);
1824 u32 fdsystem
= le32_to_cpu(txfd
->fd
.FDSystem
);
1826 if (netif_msg_tx_done(lp
)) {
1827 printk("%s: complete TxFD.\n", dev
->name
);
1830 tc35815_check_tx_stat(dev
, status
);
1832 skb
= fdsystem
!= 0xffffffff ?
1833 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
1835 if (lp
->tx_skbs
[lp
->tfd_end
].skb
!= skb
) {
1836 printk("%s: tx_skbs mismatch.\n", dev
->name
);
1840 BUG_ON(lp
->tx_skbs
[lp
->tfd_end
].skb
!= skb
);
1843 lp
->stats
.tx_bytes
+= skb
->len
;
1844 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[lp
->tfd_end
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
1845 lp
->tx_skbs
[lp
->tfd_end
].skb
= NULL
;
1846 lp
->tx_skbs
[lp
->tfd_end
].skb_dma
= 0;
1848 dev_kfree_skb_any(skb
);
1850 dev_kfree_skb_irq(skb
);
1853 txfd
->fd
.FDSystem
= cpu_to_le32(0xffffffff);
1855 lp
->tfd_end
= (lp
->tfd_end
+ 1) % TX_FD_NUM
;
1856 txfd
= &lp
->tfd_base
[lp
->tfd_end
];
1858 if ((fdnext
& ~FD_Next_EOL
) != fd_virt_to_bus(lp
, txfd
)) {
1859 printk("%s: TxFD FDNext invalid.\n", dev
->name
);
1863 if (fdnext
& FD_Next_EOL
) {
1864 /* DMA Transmitter has been stopping... */
1865 if (lp
->tfd_end
!= lp
->tfd_start
) {
1866 struct tc35815_regs __iomem
*tr
=
1867 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1868 int head
= (lp
->tfd_start
+ TX_FD_NUM
- 1) % TX_FD_NUM
;
1869 struct TxFD
* txhead
= &lp
->tfd_base
[head
];
1870 int qlen
= (lp
->tfd_start
+ TX_FD_NUM
1871 - lp
->tfd_end
) % TX_FD_NUM
;
1874 if (!(le32_to_cpu(txfd
->fd
.FDCtl
) & FD_CownsFD
)) {
1875 printk("%s: TxFD FDCtl invalid.\n", dev
->name
);
1879 /* log max queue length */
1880 if (lp
->lstats
.max_tx_qlen
< qlen
)
1881 lp
->lstats
.max_tx_qlen
= qlen
;
1884 /* start DMA Transmitter again */
1885 txhead
->fd
.FDNext
|= cpu_to_le32(FD_Next_EOL
);
1887 txhead
->fd
.FDCtl
|= cpu_to_le32(FD_FrmOpt_IntTx
);
1889 if (netif_msg_tx_queued(lp
)) {
1890 printk("%s: start TxFD on queue.\n",
1894 tc_writel(fd_virt_to_bus(lp
, txfd
), &tr
->TxFrmPtr
);
1900 /* If we had stopped the queue due to a "tx full"
1901 * condition, and space has now been made available,
1902 * wake up the queue.
1904 if (netif_queue_stopped(dev
) && ! tc35815_tx_full(dev
))
1905 netif_wake_queue(dev
);
1908 /* The inverse routine to tc35815_open(). */
1910 tc35815_close(struct net_device
*dev
)
1912 struct tc35815_local
*lp
= dev
->priv
;
1913 netif_stop_queue(dev
);
1915 /* Flush the Tx and disable Rx here. */
1917 del_timer(&lp
->timer
); /* Kill if running */
1918 tc35815_chip_reset(dev
);
1919 free_irq(dev
->irq
, dev
);
1921 tc35815_free_queues(dev
);
1928 * Get the current statistics.
1929 * This may be called with the card open or closed.
1931 static struct net_device_stats
*tc35815_get_stats(struct net_device
*dev
)
1933 struct tc35815_local
*lp
= dev
->priv
;
1934 struct tc35815_regs __iomem
*tr
=
1935 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1936 if (netif_running(dev
)) {
1937 /* Update the statistics from the device registers. */
1938 lp
->stats
.rx_missed_errors
= tc_readl(&tr
->Miss_Cnt
);
1944 static void tc35815_set_cam_entry(struct net_device
*dev
, int index
, unsigned char *addr
)
1946 struct tc35815_local
*lp
= dev
->priv
;
1947 struct tc35815_regs __iomem
*tr
=
1948 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1949 int cam_index
= index
* 6;
1952 saved_addr
= tc_readl(&tr
->CAM_Adr
);
1954 if (netif_msg_hw(lp
)) {
1956 printk(KERN_DEBUG
"%s: CAM %d:", dev
->name
, index
);
1957 for (i
= 0; i
< 6; i
++)
1958 printk(" %02x", addr
[i
]);
1962 /* read modify write */
1963 tc_writel(cam_index
- 2, &tr
->CAM_Adr
);
1964 cam_data
= tc_readl(&tr
->CAM_Data
) & 0xffff0000;
1965 cam_data
|= addr
[0] << 8 | addr
[1];
1966 tc_writel(cam_data
, &tr
->CAM_Data
);
1967 /* write whole word */
1968 tc_writel(cam_index
+ 2, &tr
->CAM_Adr
);
1969 cam_data
= (addr
[2] << 24) | (addr
[3] << 16) | (addr
[4] << 8) | addr
[5];
1970 tc_writel(cam_data
, &tr
->CAM_Data
);
1972 /* write whole word */
1973 tc_writel(cam_index
, &tr
->CAM_Adr
);
1974 cam_data
= (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) | addr
[3];
1975 tc_writel(cam_data
, &tr
->CAM_Data
);
1976 /* read modify write */
1977 tc_writel(cam_index
+ 4, &tr
->CAM_Adr
);
1978 cam_data
= tc_readl(&tr
->CAM_Data
) & 0x0000ffff;
1979 cam_data
|= addr
[4] << 24 | (addr
[5] << 16);
1980 tc_writel(cam_data
, &tr
->CAM_Data
);
1983 tc_writel(saved_addr
, &tr
->CAM_Adr
);
1988 * Set or clear the multicast filter for this adaptor.
1989 * num_addrs == -1 Promiscuous mode, receive all packets
1990 * num_addrs == 0 Normal mode, clear multicast list
1991 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1992 * and do best-effort filtering.
1995 tc35815_set_multicast_list(struct net_device
*dev
)
1997 struct tc35815_regs __iomem
*tr
=
1998 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2000 if (dev
->flags
&IFF_PROMISC
)
2002 #ifdef WORKAROUND_100HALF_PROMISC
2003 /* With some (all?) 100MHalf HUB, controller will hang
2004 * if we enabled promiscuous mode before linkup... */
2005 struct tc35815_local
*lp
= dev
->priv
;
2006 int pid
= lp
->phy_addr
;
2007 if (!(tc_mdio_read(dev
, pid
, MII_BMSR
) & BMSR_LSTATUS
))
2010 /* Enable promiscuous mode */
2011 tc_writel(CAM_CompEn
| CAM_BroadAcc
| CAM_GroupAcc
| CAM_StationAcc
, &tr
->CAM_Ctl
);
2013 else if((dev
->flags
&IFF_ALLMULTI
) || dev
->mc_count
> CAM_ENTRY_MAX
- 3)
2015 /* CAM 0, 1, 20 are reserved. */
2016 /* Disable promiscuous mode, use normal mode. */
2017 tc_writel(CAM_CompEn
| CAM_BroadAcc
| CAM_GroupAcc
, &tr
->CAM_Ctl
);
2019 else if(dev
->mc_count
)
2021 struct dev_mc_list
* cur_addr
= dev
->mc_list
;
2023 int ena_bits
= CAM_Ena_Bit(CAM_ENTRY_SOURCE
);
2025 tc_writel(0, &tr
->CAM_Ctl
);
2026 /* Walk the address list, and load the filter */
2027 for (i
= 0; i
< dev
->mc_count
; i
++, cur_addr
= cur_addr
->next
) {
2030 /* entry 0,1 is reserved. */
2031 tc35815_set_cam_entry(dev
, i
+ 2, cur_addr
->dmi_addr
);
2032 ena_bits
|= CAM_Ena_Bit(i
+ 2);
2034 tc_writel(ena_bits
, &tr
->CAM_Ena
);
2035 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2038 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE
), &tr
->CAM_Ena
);
2039 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2043 static void tc35815_get_drvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
2045 struct tc35815_local
*lp
= dev
->priv
;
2046 strcpy(info
->driver
, MODNAME
);
2047 strcpy(info
->version
, DRV_VERSION
);
2048 strcpy(info
->bus_info
, pci_name(lp
->pci_dev
));
2051 static int tc35815_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2053 struct tc35815_local
*lp
= dev
->priv
;
2054 spin_lock_irq(&lp
->lock
);
2055 mii_ethtool_gset(&lp
->mii
, cmd
);
2056 spin_unlock_irq(&lp
->lock
);
2060 static int tc35815_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2062 struct tc35815_local
*lp
= dev
->priv
;
2064 #if 1 /* use our negotiation method... */
2065 /* Verify the settings we care about. */
2066 if (cmd
->autoneg
!= AUTONEG_ENABLE
&&
2067 cmd
->autoneg
!= AUTONEG_DISABLE
)
2069 if (cmd
->autoneg
== AUTONEG_DISABLE
&&
2070 ((cmd
->speed
!= SPEED_100
&&
2071 cmd
->speed
!= SPEED_10
) ||
2072 (cmd
->duplex
!= DUPLEX_HALF
&&
2073 cmd
->duplex
!= DUPLEX_FULL
)))
2076 /* Ok, do it to it. */
2077 spin_lock_irq(&lp
->lock
);
2078 del_timer(&lp
->timer
);
2079 tc35815_start_auto_negotiation(dev
, cmd
);
2080 spin_unlock_irq(&lp
->lock
);
2083 spin_lock_irq(&lp
->lock
);
2084 rc
= mii_ethtool_sset(&lp
->mii
, cmd
);
2085 spin_unlock_irq(&lp
->lock
);
2090 static int tc35815_nway_reset(struct net_device
*dev
)
2092 struct tc35815_local
*lp
= dev
->priv
;
2094 spin_lock_irq(&lp
->lock
);
2095 rc
= mii_nway_restart(&lp
->mii
);
2096 spin_unlock_irq(&lp
->lock
);
2100 static u32
tc35815_get_link(struct net_device
*dev
)
2102 struct tc35815_local
*lp
= dev
->priv
;
2104 spin_lock_irq(&lp
->lock
);
2105 rc
= mii_link_ok(&lp
->mii
);
2106 spin_unlock_irq(&lp
->lock
);
2110 static u32
tc35815_get_msglevel(struct net_device
*dev
)
2112 struct tc35815_local
*lp
= dev
->priv
;
2113 return lp
->msg_enable
;
2116 static void tc35815_set_msglevel(struct net_device
*dev
, u32 datum
)
2118 struct tc35815_local
*lp
= dev
->priv
;
2119 lp
->msg_enable
= datum
;
2122 static int tc35815_get_stats_count(struct net_device
*dev
)
2124 struct tc35815_local
*lp
= dev
->priv
;
2125 return sizeof(lp
->lstats
) / sizeof(int);
2128 static void tc35815_get_ethtool_stats(struct net_device
*dev
, struct ethtool_stats
*stats
, u64
*data
)
2130 struct tc35815_local
*lp
= dev
->priv
;
2131 data
[0] = lp
->lstats
.max_tx_qlen
;
2132 data
[1] = lp
->lstats
.tx_ints
;
2133 data
[2] = lp
->lstats
.rx_ints
;
2134 data
[3] = lp
->lstats
.tx_underrun
;
2138 const char str
[ETH_GSTRING_LEN
];
2139 } ethtool_stats_keys
[] = {
2146 static void tc35815_get_strings(struct net_device
*dev
, u32 stringset
, u8
*data
)
2148 memcpy(data
, ethtool_stats_keys
, sizeof(ethtool_stats_keys
));
2151 static const struct ethtool_ops tc35815_ethtool_ops
= {
2152 .get_drvinfo
= tc35815_get_drvinfo
,
2153 .get_settings
= tc35815_get_settings
,
2154 .set_settings
= tc35815_set_settings
,
2155 .nway_reset
= tc35815_nway_reset
,
2156 .get_link
= tc35815_get_link
,
2157 .get_msglevel
= tc35815_get_msglevel
,
2158 .set_msglevel
= tc35815_set_msglevel
,
2159 .get_strings
= tc35815_get_strings
,
2160 .get_stats_count
= tc35815_get_stats_count
,
2161 .get_ethtool_stats
= tc35815_get_ethtool_stats
,
2162 .get_perm_addr
= ethtool_op_get_perm_addr
,
2165 static int tc35815_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
2167 struct tc35815_local
*lp
= dev
->priv
;
2170 if (!netif_running(dev
))
2173 spin_lock_irq(&lp
->lock
);
2174 rc
= generic_mii_ioctl(&lp
->mii
, if_mii(rq
), cmd
, NULL
);
2175 spin_unlock_irq(&lp
->lock
);
2180 static int tc_mdio_read(struct net_device
*dev
, int phy_id
, int location
)
2182 struct tc35815_regs __iomem
*tr
=
2183 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2185 tc_writel(MD_CA_Busy
| (phy_id
<< 5) | location
, &tr
->MD_CA
);
2186 while (tc_readl(&tr
->MD_CA
) & MD_CA_Busy
)
2188 data
= tc_readl(&tr
->MD_Data
);
2189 return data
& 0xffff;
2192 static void tc_mdio_write(struct net_device
*dev
, int phy_id
, int location
,
2195 struct tc35815_regs __iomem
*tr
=
2196 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2197 tc_writel(val
, &tr
->MD_Data
);
2198 tc_writel(MD_CA_Busy
| MD_CA_Wr
| (phy_id
<< 5) | location
, &tr
->MD_CA
);
2199 while (tc_readl(&tr
->MD_CA
) & MD_CA_Busy
)
2203 /* Auto negotiation. The scheme is very simple. We have a timer routine
2204 * that keeps watching the auto negotiation process as it progresses.
2205 * The DP83840 is first told to start doing it's thing, we set up the time
2206 * and place the timer state machine in it's initial state.
2208 * Here the timer peeks at the DP83840 status registers at each click to see
2209 * if the auto negotiation has completed, we assume here that the DP83840 PHY
2210 * will time out at some point and just tell us what (didn't) happen. For
2211 * complete coverage we only allow so many of the ticks at this level to run,
2212 * when this has expired we print a warning message and try another strategy.
2213 * This "other" strategy is to force the interface into various speed/duplex
2214 * configurations and we stop when we see a link-up condition before the
2215 * maximum number of "peek" ticks have occurred.
2217 * Once a valid link status has been detected we configure the BigMAC and
2218 * the rest of the Happy Meal to speak the most efficient protocol we could
2219 * get a clean link for. The priority for link configurations, highest first
2221 * 100 Base-T Full Duplex
2222 * 100 Base-T Half Duplex
2223 * 10 Base-T Full Duplex
2224 * 10 Base-T Half Duplex
2226 * We start a new timer now, after a successful auto negotiation status has
2227 * been detected. This timer just waits for the link-up bit to get set in
2228 * the BMCR of the DP83840. When this occurs we print a kernel log message
2229 * describing the link type in use and the fact that it is up.
2231 * If a fatal error of some sort is signalled and detected in the interrupt
2232 * service routine, and the chip is reset, or the link is ifconfig'd down
2233 * and then back up, this entire process repeats itself all over again.
2235 /* Note: Above comments are come from sunhme driver. */
2237 static int tc35815_try_next_permutation(struct net_device
*dev
)
2239 struct tc35815_local
*lp
= dev
->priv
;
2240 int pid
= lp
->phy_addr
;
2241 unsigned short bmcr
;
2243 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2245 /* Downgrade from full to half duplex. Only possible via ethtool. */
2246 if (bmcr
& BMCR_FULLDPLX
) {
2247 bmcr
&= ~BMCR_FULLDPLX
;
2248 printk(KERN_DEBUG
"%s: try next permutation (BMCR %x)\n", dev
->name
, bmcr
);
2249 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2253 /* Downgrade from 100 to 10. */
2254 if (bmcr
& BMCR_SPEED100
) {
2255 bmcr
&= ~BMCR_SPEED100
;
2256 printk(KERN_DEBUG
"%s: try next permutation (BMCR %x)\n", dev
->name
, bmcr
);
2257 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2261 /* We've tried everything. */
2266 tc35815_display_link_mode(struct net_device
*dev
)
2268 struct tc35815_local
*lp
= dev
->priv
;
2269 int pid
= lp
->phy_addr
;
2270 unsigned short lpa
, bmcr
;
2271 char *speed
= "", *duplex
= "";
2273 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2274 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2275 if (options
.speed
? (bmcr
& BMCR_SPEED100
) : (lpa
& (LPA_100HALF
| LPA_100FULL
)))
2279 if (options
.duplex
? (bmcr
& BMCR_FULLDPLX
) : (lpa
& (LPA_100FULL
| LPA_10FULL
)))
2280 duplex
= "Full Duplex";
2282 duplex
= "Half Duplex";
2284 if (netif_msg_link(lp
))
2285 printk(KERN_INFO
"%s: Link is up at %s, %s.\n",
2286 dev
->name
, speed
, duplex
);
2287 printk(KERN_DEBUG
"%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2289 bmcr
, tc_mdio_read(dev
, pid
, MII_BMSR
), lpa
);
2292 static void tc35815_display_forced_link_mode(struct net_device
*dev
)
2294 struct tc35815_local
*lp
= dev
->priv
;
2295 int pid
= lp
->phy_addr
;
2296 unsigned short bmcr
;
2297 char *speed
= "", *duplex
= "";
2299 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2300 if (bmcr
& BMCR_SPEED100
)
2304 if (bmcr
& BMCR_FULLDPLX
)
2305 duplex
= "Full Duplex.\n";
2307 duplex
= "Half Duplex.\n";
2309 if (netif_msg_link(lp
))
2310 printk(KERN_INFO
"%s: Link has been forced up at %s, %s",
2311 dev
->name
, speed
, duplex
);
2314 static void tc35815_set_link_modes(struct net_device
*dev
)
2316 struct tc35815_local
*lp
= dev
->priv
;
2317 struct tc35815_regs __iomem
*tr
=
2318 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2319 int pid
= lp
->phy_addr
;
2320 unsigned short bmcr
, lpa
;
2323 if (lp
->timer_state
== arbwait
) {
2324 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2325 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2326 printk(KERN_DEBUG
"%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2328 bmcr
, tc_mdio_read(dev
, pid
, MII_BMSR
), lpa
);
2329 if (!(lpa
& (LPA_10HALF
| LPA_10FULL
|
2330 LPA_100HALF
| LPA_100FULL
))) {
2331 /* fall back to 10HALF */
2332 printk(KERN_INFO
"%s: bad ability %04x - falling back to 10HD.\n",
2336 if (options
.duplex
? (bmcr
& BMCR_FULLDPLX
) : (lpa
& (LPA_100FULL
| LPA_10FULL
)))
2340 if (options
.speed
? (bmcr
& BMCR_SPEED100
) : (lpa
& (LPA_100HALF
| LPA_100FULL
)))
2345 /* Forcing a link mode. */
2346 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2347 if (bmcr
& BMCR_FULLDPLX
)
2351 if (bmcr
& BMCR_SPEED100
)
2357 tc_writel(tc_readl(&tr
->MAC_Ctl
) | MAC_HaltReq
, &tr
->MAC_Ctl
);
2358 if (lp
->fullduplex
) {
2359 tc_writel(tc_readl(&tr
->MAC_Ctl
) | MAC_FullDup
, &tr
->MAC_Ctl
);
2361 tc_writel(tc_readl(&tr
->MAC_Ctl
) & ~MAC_FullDup
, &tr
->MAC_Ctl
);
2363 tc_writel(tc_readl(&tr
->MAC_Ctl
) & ~MAC_HaltReq
, &tr
->MAC_Ctl
);
2365 /* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */
2367 #ifndef NO_CHECK_CARRIER
2368 /* TX4939 does not have EnLCarr */
2369 if (lp
->boardtype
!= TC35815_TX4939
) {
2370 #ifdef WORKAROUND_LOSTCAR
2371 /* WORKAROUND: enable LostCrS only if half duplex operation */
2372 if (!lp
->fullduplex
&& lp
->boardtype
!= TC35815_TX4939
)
2373 tc_writel(tc_readl(&tr
->Tx_Ctl
) | Tx_EnLCarr
, &tr
->Tx_Ctl
);
2377 lp
->mii
.full_duplex
= lp
->fullduplex
;
2380 static void tc35815_timer(unsigned long data
)
2382 struct net_device
*dev
= (struct net_device
*)data
;
2383 struct tc35815_local
*lp
= dev
->priv
;
2384 int pid
= lp
->phy_addr
;
2385 unsigned short bmsr
, bmcr
, lpa
;
2386 int restart_timer
= 0;
2388 spin_lock_irq(&lp
->lock
);
2391 switch (lp
->timer_state
) {
2394 * Only allow for 5 ticks, thats 10 seconds and much too
2395 * long to wait for arbitration to complete.
2397 /* TC35815 need more times... */
2398 if (lp
->timer_ticks
>= 10) {
2399 /* Enter force mode. */
2400 if (!options
.doforce
) {
2401 printk(KERN_NOTICE
"%s: Auto-Negotiation unsuccessful,"
2402 " cable probblem?\n", dev
->name
);
2403 /* Try to restart the adaptor. */
2404 tc35815_restart(dev
);
2407 printk(KERN_NOTICE
"%s: Auto-Negotiation unsuccessful,"
2408 " trying force link mode\n", dev
->name
);
2409 printk(KERN_DEBUG
"%s: BMCR %x BMSR %x\n", dev
->name
,
2410 tc_mdio_read(dev
, pid
, MII_BMCR
),
2411 tc_mdio_read(dev
, pid
, MII_BMSR
));
2412 bmcr
= BMCR_SPEED100
;
2413 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2416 * OK, seems we need do disable the transceiver
2417 * for the first tick to make sure we get an
2418 * accurate link state at the second tick.
2421 lp
->timer_state
= ltrywait
;
2422 lp
->timer_ticks
= 0;
2425 /* Anything interesting happen? */
2426 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2427 if (bmsr
& BMSR_ANEGCOMPLETE
) {
2428 /* Just what we've been waiting for... */
2429 tc35815_set_link_modes(dev
);
2432 * Success, at least so far, advance our state
2435 lp
->timer_state
= lupwait
;
2445 * Auto negotiation was successful and we are awaiting a
2446 * link up status. I have decided to let this timer run
2447 * forever until some sort of error is signalled, reporting
2448 * a message to the user at 10 second intervals.
2450 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2451 if (bmsr
& BMSR_LSTATUS
) {
2453 * Wheee, it's up, display the link mode in use and put
2454 * the timer to sleep.
2456 tc35815_display_link_mode(dev
);
2457 netif_carrier_on(dev
);
2458 #ifdef WORKAROUND_100HALF_PROMISC
2459 /* delayed promiscuous enabling */
2460 if (dev
->flags
& IFF_PROMISC
)
2461 tc35815_set_multicast_list(dev
);
2464 lp
->saved_lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2465 lp
->timer_state
= lcheck
;
2468 lp
->timer_state
= asleep
;
2472 if (lp
->timer_ticks
>= 10) {
2473 printk(KERN_NOTICE
"%s: Auto negotiation successful, link still "
2474 "not completely up.\n", dev
->name
);
2475 lp
->timer_ticks
= 0;
2485 * Making the timeout here too long can make it take
2486 * annoyingly long to attempt all of the link mode
2487 * permutations, but then again this is essentially
2488 * error recovery code for the most part.
2490 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2491 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2492 if (lp
->timer_ticks
== 1) {
2494 * Re-enable transceiver, we'll re-enable the
2495 * transceiver next tick, then check link state
2496 * on the following tick.
2501 if (lp
->timer_ticks
== 2) {
2505 if (bmsr
& BMSR_LSTATUS
) {
2506 /* Force mode selection success. */
2507 tc35815_display_forced_link_mode(dev
);
2508 netif_carrier_on(dev
);
2509 tc35815_set_link_modes(dev
);
2510 #ifdef WORKAROUND_100HALF_PROMISC
2511 /* delayed promiscuous enabling */
2512 if (dev
->flags
& IFF_PROMISC
)
2513 tc35815_set_multicast_list(dev
);
2516 lp
->saved_lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2517 lp
->timer_state
= lcheck
;
2520 lp
->timer_state
= asleep
;
2524 if (lp
->timer_ticks
>= 4) { /* 6 seconds or so... */
2527 ret
= tc35815_try_next_permutation(dev
);
2530 * Aieee, tried them all, reset the
2531 * chip and try all over again.
2533 printk(KERN_NOTICE
"%s: Link down, "
2537 /* Try to restart the adaptor. */
2538 tc35815_restart(dev
);
2541 lp
->timer_ticks
= 0;
2550 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2551 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2552 if (bmcr
& (BMCR_PDOWN
| BMCR_ISOLATE
| BMCR_RESET
)) {
2553 printk(KERN_ERR
"%s: PHY down? (BMCR %x)\n", dev
->name
,
2555 } else if ((lp
->saved_lpa
^ lpa
) &
2556 (LPA_100FULL
|LPA_100HALF
|LPA_10FULL
|LPA_10HALF
)) {
2557 printk(KERN_NOTICE
"%s: link status changed"
2558 " (BMCR %x LPA %x->%x)\n", dev
->name
,
2559 bmcr
, lp
->saved_lpa
, lpa
);
2565 /* Try to restart the adaptor. */
2566 tc35815_restart(dev
);
2571 /* Can't happens.... */
2572 printk(KERN_ERR
"%s: Aieee, link timer is asleep but we got "
2573 "one anyways!\n", dev
->name
);
2575 lp
->timer_ticks
= 0;
2576 lp
->timer_state
= asleep
; /* foo on you */
2580 if (restart_timer
) {
2581 lp
->timer
.expires
= jiffies
+ msecs_to_jiffies(1200);
2582 add_timer(&lp
->timer
);
2585 spin_unlock_irq(&lp
->lock
);
2588 static void tc35815_start_auto_negotiation(struct net_device
*dev
,
2589 struct ethtool_cmd
*ep
)
2591 struct tc35815_local
*lp
= dev
->priv
;
2592 int pid
= lp
->phy_addr
;
2593 unsigned short bmsr
, bmcr
, advertize
;
2596 netif_carrier_off(dev
);
2597 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2598 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2599 advertize
= tc_mdio_read(dev
, pid
, MII_ADVERTISE
);
2601 if (ep
== NULL
|| ep
->autoneg
== AUTONEG_ENABLE
) {
2602 if (options
.speed
|| options
.duplex
) {
2603 /* Advertise only specified configuration. */
2604 advertize
&= ~(ADVERTISE_10HALF
|
2608 if (options
.speed
!= 10) {
2609 if (options
.duplex
!= 1)
2610 advertize
|= ADVERTISE_100FULL
;
2611 if (options
.duplex
!= 2)
2612 advertize
|= ADVERTISE_100HALF
;
2614 if (options
.speed
!= 100) {
2615 if (options
.duplex
!= 1)
2616 advertize
|= ADVERTISE_10FULL
;
2617 if (options
.duplex
!= 2)
2618 advertize
|= ADVERTISE_10HALF
;
2620 if (options
.speed
== 100)
2621 bmcr
|= BMCR_SPEED100
;
2622 else if (options
.speed
== 10)
2623 bmcr
&= ~BMCR_SPEED100
;
2624 if (options
.duplex
== 2)
2625 bmcr
|= BMCR_FULLDPLX
;
2626 else if (options
.duplex
== 1)
2627 bmcr
&= ~BMCR_FULLDPLX
;
2629 /* Advertise everything we can support. */
2630 if (bmsr
& BMSR_10HALF
)
2631 advertize
|= ADVERTISE_10HALF
;
2633 advertize
&= ~ADVERTISE_10HALF
;
2634 if (bmsr
& BMSR_10FULL
)
2635 advertize
|= ADVERTISE_10FULL
;
2637 advertize
&= ~ADVERTISE_10FULL
;
2638 if (bmsr
& BMSR_100HALF
)
2639 advertize
|= ADVERTISE_100HALF
;
2641 advertize
&= ~ADVERTISE_100HALF
;
2642 if (bmsr
& BMSR_100FULL
)
2643 advertize
|= ADVERTISE_100FULL
;
2645 advertize
&= ~ADVERTISE_100FULL
;
2648 tc_mdio_write(dev
, pid
, MII_ADVERTISE
, advertize
);
2650 /* Enable Auto-Negotiation, this is usually on already... */
2651 bmcr
|= BMCR_ANENABLE
;
2652 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2654 /* Restart it to make sure it is going. */
2655 bmcr
|= BMCR_ANRESTART
;
2656 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2657 printk(KERN_DEBUG
"%s: ADVERTISE %x BMCR %x\n", dev
->name
, advertize
, bmcr
);
2659 /* BMCR_ANRESTART self clears when the process has begun. */
2660 timeout
= 64; /* More than enough. */
2662 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2663 if (!(bmcr
& BMCR_ANRESTART
))
2664 break; /* got it. */
2668 printk(KERN_ERR
"%s: TC35815 would not start auto "
2669 "negotiation BMCR=0x%04x\n",
2671 printk(KERN_NOTICE
"%s: Performing force link "
2672 "detection.\n", dev
->name
);
2675 printk(KERN_DEBUG
"%s: auto negotiation started.\n", dev
->name
);
2676 lp
->timer_state
= arbwait
;
2680 /* Force the link up, trying first a particular mode.
2681 * Either we are here at the request of ethtool or
2682 * because the Happy Meal would not start to autoneg.
2685 /* Disable auto-negotiation in BMCR, enable the duplex and
2686 * speed setting, init the timer state machine, and fire it off.
2688 if (ep
== NULL
|| ep
->autoneg
== AUTONEG_ENABLE
) {
2689 bmcr
= BMCR_SPEED100
;
2691 if (ep
->speed
== SPEED_100
)
2692 bmcr
= BMCR_SPEED100
;
2695 if (ep
->duplex
== DUPLEX_FULL
)
2696 bmcr
|= BMCR_FULLDPLX
;
2698 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2700 /* OK, seems we need do disable the transceiver for the first
2701 * tick to make sure we get an accurate link state at the
2704 lp
->timer_state
= ltrywait
;
2707 del_timer(&lp
->timer
);
2708 lp
->timer_ticks
= 0;
2709 lp
->timer
.expires
= jiffies
+ msecs_to_jiffies(1200);
2710 add_timer(&lp
->timer
);
2713 static void tc35815_find_phy(struct net_device
*dev
)
2715 struct tc35815_local
*lp
= dev
->priv
;
2716 int pid
= lp
->phy_addr
;
2720 for (pid
= 31; pid
>= 0; pid
--) {
2721 id0
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2722 if (id0
!= 0xffff && id0
!= 0x0000 &&
2723 (id0
& BMSR_RESV
) != (0xffff & BMSR_RESV
) /* paranoia? */
2730 printk(KERN_ERR
"%s: No MII Phy found.\n",
2732 lp
->phy_addr
= pid
= 0;
2735 lp
->mii_id
[0] = tc_mdio_read(dev
, pid
, MII_PHYSID1
);
2736 lp
->mii_id
[1] = tc_mdio_read(dev
, pid
, MII_PHYSID2
);
2737 if (netif_msg_hw(lp
))
2738 printk(KERN_INFO
"%s: PHY(%02x) ID %04x %04x\n", dev
->name
,
2739 pid
, lp
->mii_id
[0], lp
->mii_id
[1]);
2742 static void tc35815_phy_chip_init(struct net_device
*dev
)
2744 struct tc35815_local
*lp
= dev
->priv
;
2745 int pid
= lp
->phy_addr
;
2746 unsigned short bmcr
;
2747 struct ethtool_cmd ecmd
, *ep
;
2749 /* dis-isolate if needed. */
2750 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2751 if (bmcr
& BMCR_ISOLATE
) {
2753 printk(KERN_DEBUG
"%s: unisolating...", dev
->name
);
2754 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
& ~BMCR_ISOLATE
);
2756 if (!(tc_mdio_read(dev
, pid
, MII_BMCR
) & BMCR_ISOLATE
))
2760 printk(" %s.\n", count
? "done" : "failed");
2763 if (options
.speed
&& options
.duplex
) {
2764 ecmd
.autoneg
= AUTONEG_DISABLE
;
2765 ecmd
.speed
= options
.speed
== 10 ? SPEED_10
: SPEED_100
;
2766 ecmd
.duplex
= options
.duplex
== 1 ? DUPLEX_HALF
: DUPLEX_FULL
;
2771 tc35815_start_auto_negotiation(dev
, ep
);
2774 static void tc35815_chip_reset(struct net_device
*dev
)
2776 struct tc35815_regs __iomem
*tr
=
2777 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2779 /* reset the controller */
2780 tc_writel(MAC_Reset
, &tr
->MAC_Ctl
);
2781 udelay(4); /* 3200ns */
2783 while (tc_readl(&tr
->MAC_Ctl
) & MAC_Reset
) {
2785 printk(KERN_ERR
"%s: MAC reset failed.\n", dev
->name
);
2790 tc_writel(0, &tr
->MAC_Ctl
);
2792 /* initialize registers to default value */
2793 tc_writel(0, &tr
->DMA_Ctl
);
2794 tc_writel(0, &tr
->TxThrsh
);
2795 tc_writel(0, &tr
->TxPollCtr
);
2796 tc_writel(0, &tr
->RxFragSize
);
2797 tc_writel(0, &tr
->Int_En
);
2798 tc_writel(0, &tr
->FDA_Bas
);
2799 tc_writel(0, &tr
->FDA_Lim
);
2800 tc_writel(0xffffffff, &tr
->Int_Src
); /* Write 1 to clear */
2801 tc_writel(0, &tr
->CAM_Ctl
);
2802 tc_writel(0, &tr
->Tx_Ctl
);
2803 tc_writel(0, &tr
->Rx_Ctl
);
2804 tc_writel(0, &tr
->CAM_Ena
);
2805 (void)tc_readl(&tr
->Miss_Cnt
); /* Read to clear */
2807 /* initialize internal SRAM */
2808 tc_writel(DMA_TestMode
, &tr
->DMA_Ctl
);
2809 for (i
= 0; i
< 0x1000; i
+= 4) {
2810 tc_writel(i
, &tr
->CAM_Adr
);
2811 tc_writel(0, &tr
->CAM_Data
);
2813 tc_writel(0, &tr
->DMA_Ctl
);
2816 static void tc35815_chip_init(struct net_device
*dev
)
2818 struct tc35815_local
*lp
= dev
->priv
;
2819 struct tc35815_regs __iomem
*tr
=
2820 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2821 unsigned long txctl
= TX_CTL_CMD
;
2823 tc35815_phy_chip_init(dev
);
2825 /* load station address to CAM */
2826 tc35815_set_cam_entry(dev
, CAM_ENTRY_SOURCE
, dev
->dev_addr
);
2828 /* Enable CAM (broadcast and unicast) */
2829 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE
), &tr
->CAM_Ena
);
2830 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2832 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2833 if (HAVE_DMA_RXALIGN(lp
))
2834 tc_writel(DMA_BURST_SIZE
| DMA_RxAlign_2
, &tr
->DMA_Ctl
);
2836 tc_writel(DMA_BURST_SIZE
, &tr
->DMA_Ctl
);
2837 #ifdef TC35815_USE_PACKEDBUFFER
2838 tc_writel(RxFrag_EnPack
| ETH_ZLEN
, &tr
->RxFragSize
); /* Packing */
2840 tc_writel(ETH_ZLEN
, &tr
->RxFragSize
);
2842 tc_writel(0, &tr
->TxPollCtr
); /* Batch mode */
2843 tc_writel(TX_THRESHOLD
, &tr
->TxThrsh
);
2844 tc_writel(INT_EN_CMD
, &tr
->Int_En
);
2847 tc_writel(fd_virt_to_bus(lp
, lp
->rfd_base
), &tr
->FDA_Bas
);
2848 tc_writel((unsigned long)lp
->rfd_limit
- (unsigned long)lp
->rfd_base
,
2851 * Activation method:
2852 * First, enable the MAC Transmitter and the DMA Receive circuits.
2853 * Then enable the DMA Transmitter and the MAC Receive circuits.
2855 tc_writel(fd_virt_to_bus(lp
, lp
->fbl_ptr
), &tr
->BLFrmPtr
); /* start DMA receiver */
2856 tc_writel(RX_CTL_CMD
, &tr
->Rx_Ctl
); /* start MAC receiver */
2858 /* start MAC transmitter */
2859 #ifndef NO_CHECK_CARRIER
2860 /* TX4939 does not have EnLCarr */
2861 if (lp
->boardtype
== TC35815_TX4939
)
2862 txctl
&= ~Tx_EnLCarr
;
2863 #ifdef WORKAROUND_LOSTCAR
2864 /* WORKAROUND: ignore LostCrS in full duplex operation */
2865 if ((lp
->timer_state
!= asleep
&& lp
->timer_state
!= lcheck
) ||
2867 txctl
&= ~Tx_EnLCarr
;
2869 #endif /* !NO_CHECK_CARRIER */
2871 txctl
&= ~Tx_EnComp
; /* disable global tx completion int. */
2873 tc_writel(txctl
, &tr
->Tx_Ctl
);
2877 static int tc35815_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2879 struct net_device
*dev
= pci_get_drvdata(pdev
);
2880 struct tc35815_local
*lp
= dev
->priv
;
2881 unsigned long flags
;
2883 pci_save_state(pdev
);
2884 if (!netif_running(dev
))
2886 netif_device_detach(dev
);
2887 spin_lock_irqsave(&lp
->lock
, flags
);
2888 del_timer(&lp
->timer
); /* Kill if running */
2889 tc35815_chip_reset(dev
);
2890 spin_unlock_irqrestore(&lp
->lock
, flags
);
2891 pci_set_power_state(pdev
, PCI_D3hot
);
2895 static int tc35815_resume(struct pci_dev
*pdev
)
2897 struct net_device
*dev
= pci_get_drvdata(pdev
);
2898 struct tc35815_local
*lp
= dev
->priv
;
2899 unsigned long flags
;
2901 pci_restore_state(pdev
);
2902 if (!netif_running(dev
))
2904 pci_set_power_state(pdev
, PCI_D0
);
2905 spin_lock_irqsave(&lp
->lock
, flags
);
2906 tc35815_restart(dev
);
2907 spin_unlock_irqrestore(&lp
->lock
, flags
);
2908 netif_device_attach(dev
);
2911 #endif /* CONFIG_PM */
2913 static struct pci_driver tc35815_pci_driver
= {
2915 .id_table
= tc35815_pci_tbl
,
2916 .probe
= tc35815_init_one
,
2917 .remove
= __devexit_p(tc35815_remove_one
),
2919 .suspend
= tc35815_suspend
,
2920 .resume
= tc35815_resume
,
2924 module_param_named(speed
, options
.speed
, int, 0);
2925 MODULE_PARM_DESC(speed
, "0:auto, 10:10Mbps, 100:100Mbps");
2926 module_param_named(duplex
, options
.duplex
, int, 0);
2927 MODULE_PARM_DESC(duplex
, "0:auto, 1:half, 2:full");
2928 module_param_named(doforce
, options
.doforce
, int, 0);
2929 MODULE_PARM_DESC(doforce
, "try force link mode if auto-negotiation failed");
2931 static int __init
tc35815_init_module(void)
2933 return pci_register_driver(&tc35815_pci_driver
);
2936 static void __exit
tc35815_cleanup_module(void)
2938 pci_unregister_driver(&tc35815_pci_driver
);
2941 module_init(tc35815_init_module
);
2942 module_exit(tc35815_cleanup_module
);
2944 MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2945 MODULE_LICENSE("GPL");