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 "1.36-NAPI"
28 #define DRV_VERSION "1.36"
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>
52 #include <linux/platform_device.h>
54 #include <asm/byteorder.h>
56 /* First, a few definitions that the brave might change. */
58 #define GATHER_TXINT /* On-Demand Tx Interrupt */
59 #define WORKAROUND_LOSTCAR
60 #define WORKAROUND_100HALF_PROMISC
61 /* #define TC35815_USE_PACKEDBUFFER */
69 /* indexed by board_t, above */
72 } board_info
[] __devinitdata
= {
73 { "TOSHIBA TC35815CF 10/100BaseTX" },
74 { "TOSHIBA TC35815 with Wake on LAN" },
75 { "TOSHIBA TC35815/TX4939" },
78 static const struct pci_device_id tc35815_pci_tbl
[] = {
79 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815CF
), .driver_data
= TC35815CF
},
80 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU
), .driver_data
= TC35815_NWU
},
81 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939
), .driver_data
= TC35815_TX4939
},
84 MODULE_DEVICE_TABLE (pci
, tc35815_pci_tbl
);
86 /* see MODULE_PARM_DESC */
87 static struct tc35815_options
{
97 __u32 DMA_Ctl
; /* 0x00 */
105 __u32 FDA_Lim
; /* 0x20 */
112 __u32 MAC_Ctl
; /* 0x40 */
120 __u32 CAM_Adr
; /* 0x60 */
133 /* DMA_Ctl bit asign ------------------------------------------------------- */
134 #define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */
135 #define DMA_RxAlign_1 0x00400000
136 #define DMA_RxAlign_2 0x00800000
137 #define DMA_RxAlign_3 0x00c00000
138 #define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */
139 #define DMA_IntMask 0x00040000 /* 1:Interupt mask */
140 #define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
141 #define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
142 #define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
143 #define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
144 #define DMA_TestMode 0x00002000 /* 1:Test Mode */
145 #define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
146 #define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
148 /* RxFragSize bit asign ---------------------------------------------------- */
149 #define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
150 #define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
152 /* MAC_Ctl bit asign ------------------------------------------------------- */
153 #define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */
154 #define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */
155 #define MAC_MissRoll 0x00000400 /* 1:Missed Roll */
156 #define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */
157 #define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */
158 #define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/
159 #define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */
160 #define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */
161 #define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */
162 #define MAC_Reset 0x00000004 /* 1:Software Reset */
163 #define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */
164 #define MAC_HaltReq 0x00000001 /* 1:Halt request */
166 /* PROM_Ctl bit asign ------------------------------------------------------ */
167 #define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */
168 #define PROM_Read 0x00004000 /*10:Read operation */
169 #define PROM_Write 0x00002000 /*01:Write operation */
170 #define PROM_Erase 0x00006000 /*11:Erase operation */
171 /*00:Enable or Disable Writting, */
172 /* as specified in PROM_Addr. */
173 #define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */
176 /* CAM_Ctl bit asign ------------------------------------------------------- */
177 #define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */
178 #define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/
180 #define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */
181 #define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */
182 #define CAM_StationAcc 0x00000001 /* 1:unicast accept */
184 /* CAM_Ena bit asign ------------------------------------------------------- */
185 #define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
186 #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
187 #define CAM_Ena_Bit(index) (1<<(index))
188 #define CAM_ENTRY_DESTINATION 0
189 #define CAM_ENTRY_SOURCE 1
190 #define CAM_ENTRY_MACCTL 20
192 /* Tx_Ctl bit asign -------------------------------------------------------- */
193 #define Tx_En 0x00000001 /* 1:Transmit enable */
194 #define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */
195 #define Tx_NoPad 0x00000004 /* 1:Suppress Padding */
196 #define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */
197 #define Tx_FBack 0x00000010 /* 1:Fast Back-off */
198 #define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */
199 #define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */
200 #define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */
201 #define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */
202 #define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */
203 #define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */
204 #define Tx_EnComp 0x00004000 /* 1:Enable Completion */
206 /* Tx_Stat bit asign ------------------------------------------------------- */
207 #define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */
208 #define Tx_ExColl 0x00000010 /* Excessive Collision */
209 #define Tx_TXDefer 0x00000020 /* Transmit Defered */
210 #define Tx_Paused 0x00000040 /* Transmit Paused */
211 #define Tx_IntTx 0x00000080 /* Interrupt on Tx */
212 #define Tx_Under 0x00000100 /* Underrun */
213 #define Tx_Defer 0x00000200 /* Deferral */
214 #define Tx_NCarr 0x00000400 /* No Carrier */
215 #define Tx_10Stat 0x00000800 /* 10Mbps Status */
216 #define Tx_LateColl 0x00001000 /* Late Collision */
217 #define Tx_TxPar 0x00002000 /* Tx Parity Error */
218 #define Tx_Comp 0x00004000 /* Completion */
219 #define Tx_Halted 0x00008000 /* Tx Halted */
220 #define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */
222 /* Rx_Ctl bit asign -------------------------------------------------------- */
223 #define Rx_EnGood 0x00004000 /* 1:Enable Good */
224 #define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */
225 #define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */
226 #define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */
227 #define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */
228 #define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */
229 #define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */
230 #define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */
231 #define Rx_ShortEn 0x00000008 /* 1:Short Enable */
232 #define Rx_LongEn 0x00000004 /* 1:Long Enable */
233 #define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */
234 #define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */
236 /* Rx_Stat bit asign ------------------------------------------------------- */
237 #define Rx_Halted 0x00008000 /* Rx Halted */
238 #define Rx_Good 0x00004000 /* Rx Good */
239 #define Rx_RxPar 0x00002000 /* Rx Parity Error */
240 /* 0x00001000 not use */
241 #define Rx_LongErr 0x00000800 /* Rx Long Error */
242 #define Rx_Over 0x00000400 /* Rx Overflow */
243 #define Rx_CRCErr 0x00000200 /* Rx CRC Error */
244 #define Rx_Align 0x00000100 /* Rx Alignment Error */
245 #define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */
246 #define Rx_IntRx 0x00000040 /* Rx Interrupt */
247 #define Rx_CtlRecd 0x00000020 /* Rx Control Receive */
249 #define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */
251 /* Int_En bit asign -------------------------------------------------------- */
252 #define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
253 #define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */
254 #define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
255 #define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
256 #define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
257 #define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
258 #define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
259 #define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
260 #define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
261 #define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
262 #define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
263 #define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
264 /* Exhausted Enable */
266 /* Int_Src bit asign ------------------------------------------------------- */
267 #define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
268 #define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
269 #define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
270 #define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
271 #define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
272 #define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
273 #define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
274 #define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
275 #define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
276 #define Int_SWInt 0x00000020 /* 1:Software request & Clear */
277 #define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
278 #define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
279 #define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
280 #define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
281 #define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
283 /* MD_CA bit asign --------------------------------------------------------- */
284 #define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
285 #define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
286 #define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
293 /* Frame descripter */
295 volatile __u32 FDNext
;
296 volatile __u32 FDSystem
;
297 volatile __u32 FDStat
;
298 volatile __u32 FDCtl
;
301 /* Buffer descripter */
303 volatile __u32 BuffData
;
304 volatile __u32 BDCtl
;
309 /* Frame Descripter bit asign ---------------------------------------------- */
310 #define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
311 #define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
312 #define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
313 #define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
314 #define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
315 #define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
316 #define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
317 #define FD_FrmOpt_Packing 0x04000000 /* Rx only */
318 #define FD_CownsFD 0x80000000 /* FD Controller owner bit */
319 #define FD_Next_EOL 0x00000001 /* FD EOL indicator */
320 #define FD_BDCnt_SHIFT 16
322 /* Buffer Descripter bit asign --------------------------------------------- */
323 #define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
324 #define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
325 #define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
326 #define BD_CownsBD 0x80000000 /* BD Controller owner bit */
327 #define BD_RxBDID_SHIFT 16
328 #define BD_RxBDSeqN_SHIFT 24
331 /* Some useful constants. */
332 #undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
334 #ifdef NO_CHECK_CARRIER
335 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
336 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
337 Tx_En) /* maybe 0x7b01 */
339 #define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
340 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
341 Tx_En) /* maybe 0x7b01 */
343 #define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
344 | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
345 #define INT_EN_CMD (Int_NRAbtEn | \
346 Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
347 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
349 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
350 #define DMA_CTL_CMD DMA_BURST_SIZE
351 #define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF)
353 /* Tuning parameters */
354 #define DMA_BURST_SIZE 32
355 #define TX_THRESHOLD 1024
356 #define TX_THRESHOLD_MAX 1536 /* used threshold with packet max byte for low pci transfer ability.*/
357 #define TX_THRESHOLD_KEEP_LIMIT 10 /* setting threshold max value when overrun error occured this count. */
359 /* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
360 #ifdef TC35815_USE_PACKEDBUFFER
361 #define FD_PAGE_NUM 2
362 #define RX_BUF_NUM 8 /* >= 2 */
363 #define RX_FD_NUM 250 /* >= 32 */
364 #define TX_FD_NUM 128
365 #define RX_BUF_SIZE PAGE_SIZE
366 #else /* TC35815_USE_PACKEDBUFFER */
367 #define FD_PAGE_NUM 4
368 #define RX_BUF_NUM 128 /* < 256 */
369 #define RX_FD_NUM 256 /* >= 32 */
370 #define TX_FD_NUM 128
371 #if RX_CTL_CMD & Rx_LongEn
372 #define RX_BUF_SIZE PAGE_SIZE
373 #elif RX_CTL_CMD & Rx_StripCRC
374 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 4 + 2, 32) /* +2: reserve */
376 #define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 2, 32) /* +2: reserve */
378 #endif /* TC35815_USE_PACKEDBUFFER */
379 #define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */
380 #define NAPI_WEIGHT 16
390 struct BDesc bd
[0]; /* variable length */
395 struct BDesc bd
[RX_BUF_NUM
];
399 #define tc_readl(addr) ioread32(addr)
400 #define tc_writel(d, addr) iowrite32(d, addr)
402 #define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
404 /* Timer state engine. */
405 enum tc35815_timer_state
{
406 arbwait
= 0, /* Waiting for auto negotiation to complete. */
407 lupwait
= 1, /* Auto-neg complete, awaiting link-up status. */
408 ltrywait
= 2, /* Forcing try of all modes, from fastest to slowest. */
409 asleep
= 3, /* Time inactive. */
410 lcheck
= 4, /* Check link status. */
413 /* Information that need to be kept for each board. */
414 struct tc35815_local
{
415 struct pci_dev
*pci_dev
;
417 struct net_device
*dev
;
418 struct napi_struct napi
;
428 /* Tx control lock. This protects the transmit buffer ring
429 * state along with the "tx full" state of the driver. This
430 * means all netif_queue flow control actions are protected
431 * by this lock as well.
437 unsigned short saved_lpa
;
438 struct timer_list timer
;
439 enum tc35815_timer_state timer_state
; /* State of auto-neg timer. */
440 unsigned int timer_ticks
; /* Number of clicks at each state */
443 * Transmitting: Batch Mode.
445 * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER)
446 * 1 circular FD for Free Buffer List.
447 * RX_BUF_NUM BD in Free Buffer FD.
448 * One Free Buffer BD has PAGE_SIZE data buffer.
449 * Or Non-Packing Mode.
450 * 1 circular FD for Free Buffer List.
451 * RX_BUF_NUM BD in Free Buffer FD.
452 * One Free Buffer BD has ETH_FRAME_LEN data buffer.
454 void * fd_buf
; /* for TxFD, RxFD, FrFD */
455 dma_addr_t fd_buf_dma
;
456 struct TxFD
*tfd_base
;
457 unsigned int tfd_start
;
458 unsigned int tfd_end
;
459 struct RxFD
*rfd_base
;
460 struct RxFD
*rfd_limit
;
461 struct RxFD
*rfd_cur
;
462 struct FrFD
*fbl_ptr
;
463 #ifdef TC35815_USE_PACKEDBUFFER
464 unsigned char fbl_curid
;
465 void * data_buf
[RX_BUF_NUM
]; /* packing */
466 dma_addr_t data_buf_dma
[RX_BUF_NUM
];
470 } tx_skbs
[TX_FD_NUM
];
472 unsigned int fbl_count
;
476 } tx_skbs
[TX_FD_NUM
], rx_skbs
[RX_BUF_NUM
];
478 struct mii_if_info mii
;
479 unsigned short mii_id
[2];
484 static inline dma_addr_t
fd_virt_to_bus(struct tc35815_local
*lp
, void *virt
)
486 return lp
->fd_buf_dma
+ ((u8
*)virt
- (u8
*)lp
->fd_buf
);
489 static inline void *fd_bus_to_virt(struct tc35815_local
*lp
, dma_addr_t bus
)
491 return (void *)((u8
*)lp
->fd_buf
+ (bus
- lp
->fd_buf_dma
));
494 #ifdef TC35815_USE_PACKEDBUFFER
495 static inline void *rxbuf_bus_to_virt(struct tc35815_local
*lp
, dma_addr_t bus
)
498 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
499 if (bus
>= lp
->data_buf_dma
[i
] &&
500 bus
< lp
->data_buf_dma
[i
] + PAGE_SIZE
)
501 return (void *)((u8
*)lp
->data_buf
[i
] +
502 (bus
- lp
->data_buf_dma
[i
]));
507 #define TC35815_DMA_SYNC_ONDEMAND
508 static void* alloc_rxbuf_page(struct pci_dev
*hwdev
, dma_addr_t
*dma_handle
)
510 #ifdef TC35815_DMA_SYNC_ONDEMAND
512 /* pci_map + pci_dma_sync will be more effective than
513 * pci_alloc_consistent on some archs. */
514 if ((buf
= (void *)__get_free_page(GFP_ATOMIC
)) == NULL
)
516 *dma_handle
= pci_map_single(hwdev
, buf
, PAGE_SIZE
,
518 if (pci_dma_mapping_error(*dma_handle
)) {
519 free_page((unsigned long)buf
);
524 return pci_alloc_consistent(hwdev
, PAGE_SIZE
, dma_handle
);
528 static void free_rxbuf_page(struct pci_dev
*hwdev
, void *buf
, dma_addr_t dma_handle
)
530 #ifdef TC35815_DMA_SYNC_ONDEMAND
531 pci_unmap_single(hwdev
, dma_handle
, PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
532 free_page((unsigned long)buf
);
534 pci_free_consistent(hwdev
, PAGE_SIZE
, buf
, dma_handle
);
537 #else /* TC35815_USE_PACKEDBUFFER */
538 static struct sk_buff
*alloc_rxbuf_skb(struct net_device
*dev
,
539 struct pci_dev
*hwdev
,
540 dma_addr_t
*dma_handle
)
543 skb
= dev_alloc_skb(RX_BUF_SIZE
);
546 *dma_handle
= pci_map_single(hwdev
, skb
->data
, RX_BUF_SIZE
,
548 if (pci_dma_mapping_error(*dma_handle
)) {
549 dev_kfree_skb_any(skb
);
552 skb_reserve(skb
, 2); /* make IP header 4byte aligned */
556 static void free_rxbuf_skb(struct pci_dev
*hwdev
, struct sk_buff
*skb
, dma_addr_t dma_handle
)
558 pci_unmap_single(hwdev
, dma_handle
, RX_BUF_SIZE
,
560 dev_kfree_skb_any(skb
);
562 #endif /* TC35815_USE_PACKEDBUFFER */
564 /* Index to functions, as function prototypes. */
566 static int tc35815_open(struct net_device
*dev
);
567 static int tc35815_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
568 static irqreturn_t
tc35815_interrupt(int irq
, void *dev_id
);
570 static int tc35815_rx(struct net_device
*dev
, int limit
);
571 static int tc35815_poll(struct napi_struct
*napi
, int budget
);
573 static void tc35815_rx(struct net_device
*dev
);
575 static void tc35815_txdone(struct net_device
*dev
);
576 static int tc35815_close(struct net_device
*dev
);
577 static struct net_device_stats
*tc35815_get_stats(struct net_device
*dev
);
578 static void tc35815_set_multicast_list(struct net_device
*dev
);
579 static void tc35815_tx_timeout(struct net_device
*dev
);
580 static int tc35815_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
581 #ifdef CONFIG_NET_POLL_CONTROLLER
582 static void tc35815_poll_controller(struct net_device
*dev
);
584 static const struct ethtool_ops tc35815_ethtool_ops
;
586 /* Example routines you must write ;->. */
587 static void tc35815_chip_reset(struct net_device
*dev
);
588 static void tc35815_chip_init(struct net_device
*dev
);
589 static void tc35815_find_phy(struct net_device
*dev
);
590 static void tc35815_phy_chip_init(struct net_device
*dev
);
593 static void panic_queues(struct net_device
*dev
);
596 static void tc35815_timer(unsigned long data
);
597 static void tc35815_start_auto_negotiation(struct net_device
*dev
,
598 struct ethtool_cmd
*ep
);
599 static int tc_mdio_read(struct net_device
*dev
, int phy_id
, int location
);
600 static void tc_mdio_write(struct net_device
*dev
, int phy_id
, int location
,
603 #ifdef CONFIG_CPU_TX49XX
605 * Find a platform_device providing a MAC address. The platform code
606 * should provide a "tc35815-mac" device with a MAC address in its
609 static int __devinit
tc35815_mac_match(struct device
*dev
, void *data
)
611 struct platform_device
*plat_dev
= to_platform_device(dev
);
612 struct pci_dev
*pci_dev
= data
;
613 unsigned int id
= pci_dev
->irq
;
614 return !strcmp(plat_dev
->name
, "tc35815-mac") && plat_dev
->id
== id
;
617 static int __devinit
tc35815_read_plat_dev_addr(struct net_device
*dev
)
619 struct tc35815_local
*lp
= netdev_priv(dev
);
620 struct device
*pd
= bus_find_device(&platform_bus_type
, NULL
,
621 lp
->pci_dev
, tc35815_mac_match
);
623 if (pd
->platform_data
)
624 memcpy(dev
->dev_addr
, pd
->platform_data
, ETH_ALEN
);
626 return is_valid_ether_addr(dev
->dev_addr
) ? 0 : -ENODEV
;
631 static int __devinit
tc35815_read_plat_dev_addr(struct net_device
*dev
)
637 static int __devinit
tc35815_init_dev_addr (struct net_device
*dev
)
639 struct tc35815_regs __iomem
*tr
=
640 (struct tc35815_regs __iomem
*)dev
->base_addr
;
643 while (tc_readl(&tr
->PROM_Ctl
) & PROM_Busy
)
645 for (i
= 0; i
< 6; i
+= 2) {
647 tc_writel(PROM_Busy
| PROM_Read
| (i
/ 2 + 2), &tr
->PROM_Ctl
);
648 while (tc_readl(&tr
->PROM_Ctl
) & PROM_Busy
)
650 data
= tc_readl(&tr
->PROM_Data
);
651 dev
->dev_addr
[i
] = data
& 0xff;
652 dev
->dev_addr
[i
+1] = data
>> 8;
654 if (!is_valid_ether_addr(dev
->dev_addr
))
655 return tc35815_read_plat_dev_addr(dev
);
659 static int __devinit
tc35815_init_one (struct pci_dev
*pdev
,
660 const struct pci_device_id
*ent
)
662 void __iomem
*ioaddr
= NULL
;
663 struct net_device
*dev
;
664 struct tc35815_local
*lp
;
666 DECLARE_MAC_BUF(mac
);
668 static int printed_version
;
669 if (!printed_version
++) {
671 dev_printk(KERN_DEBUG
, &pdev
->dev
,
672 "speed:%d duplex:%d doforce:%d\n",
673 options
.speed
, options
.duplex
, options
.doforce
);
677 dev_warn(&pdev
->dev
, "no IRQ assigned.\n");
681 /* dev zeroed in alloc_etherdev */
682 dev
= alloc_etherdev (sizeof (*lp
));
684 dev_err(&pdev
->dev
, "unable to alloc new ethernet\n");
687 SET_NETDEV_DEV(dev
, &pdev
->dev
);
688 lp
= netdev_priv(dev
);
691 /* enable device (incl. PCI PM wakeup), and bus-mastering */
692 rc
= pcim_enable_device(pdev
);
695 rc
= pcim_iomap_regions(pdev
, 1 << 1, MODNAME
);
698 pci_set_master(pdev
);
699 ioaddr
= pcim_iomap_table(pdev
)[1];
701 /* Initialize the device structure. */
702 dev
->open
= tc35815_open
;
703 dev
->hard_start_xmit
= tc35815_send_packet
;
704 dev
->stop
= tc35815_close
;
705 dev
->get_stats
= tc35815_get_stats
;
706 dev
->set_multicast_list
= tc35815_set_multicast_list
;
707 dev
->do_ioctl
= tc35815_ioctl
;
708 dev
->ethtool_ops
= &tc35815_ethtool_ops
;
709 dev
->tx_timeout
= tc35815_tx_timeout
;
710 dev
->watchdog_timeo
= TC35815_TX_TIMEOUT
;
712 netif_napi_add(dev
, &lp
->napi
, tc35815_poll
, NAPI_WEIGHT
);
714 #ifdef CONFIG_NET_POLL_CONTROLLER
715 dev
->poll_controller
= tc35815_poll_controller
;
718 dev
->irq
= pdev
->irq
;
719 dev
->base_addr
= (unsigned long) ioaddr
;
721 spin_lock_init(&lp
->lock
);
723 lp
->boardtype
= ent
->driver_data
;
725 lp
->msg_enable
= NETIF_MSG_TX_ERR
| NETIF_MSG_HW
| NETIF_MSG_DRV
| NETIF_MSG_LINK
;
726 pci_set_drvdata(pdev
, dev
);
728 /* Soft reset the chip. */
729 tc35815_chip_reset(dev
);
731 /* Retrieve the ethernet address. */
732 if (tc35815_init_dev_addr(dev
)) {
733 dev_warn(&pdev
->dev
, "not valid ether addr\n");
734 random_ether_addr(dev
->dev_addr
);
737 rc
= register_netdev (dev
);
741 memcpy(dev
->perm_addr
, dev
->dev_addr
, dev
->addr_len
);
742 printk(KERN_INFO
"%s: %s at 0x%lx, %s, IRQ %d\n",
744 board_info
[ent
->driver_data
].name
,
746 print_mac(mac
, dev
->dev_addr
),
749 setup_timer(&lp
->timer
, tc35815_timer
, (unsigned long) dev
);
751 lp
->mii
.mdio_read
= tc_mdio_read
;
752 lp
->mii
.mdio_write
= tc_mdio_write
;
753 lp
->mii
.phy_id_mask
= 0x1f;
754 lp
->mii
.reg_num_mask
= 0x1f;
755 tc35815_find_phy(dev
);
756 lp
->mii
.phy_id
= lp
->phy_addr
;
757 lp
->mii
.full_duplex
= 0;
758 lp
->mii
.force_media
= 0;
768 static void __devexit
tc35815_remove_one (struct pci_dev
*pdev
)
770 struct net_device
*dev
= pci_get_drvdata (pdev
);
772 unregister_netdev (dev
);
775 pci_set_drvdata (pdev
, NULL
);
779 tc35815_init_queues(struct net_device
*dev
)
781 struct tc35815_local
*lp
= netdev_priv(dev
);
783 unsigned long fd_addr
;
786 BUG_ON(sizeof(struct FDesc
) +
787 sizeof(struct BDesc
) * RX_BUF_NUM
+
788 sizeof(struct FDesc
) * RX_FD_NUM
+
789 sizeof(struct TxFD
) * TX_FD_NUM
>
790 PAGE_SIZE
* FD_PAGE_NUM
);
792 if ((lp
->fd_buf
= pci_alloc_consistent(lp
->pci_dev
, PAGE_SIZE
* FD_PAGE_NUM
, &lp
->fd_buf_dma
)) == 0)
794 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
795 #ifdef TC35815_USE_PACKEDBUFFER
796 if ((lp
->data_buf
[i
] = alloc_rxbuf_page(lp
->pci_dev
, &lp
->data_buf_dma
[i
])) == NULL
) {
798 free_rxbuf_page(lp
->pci_dev
,
800 lp
->data_buf_dma
[i
]);
801 lp
->data_buf
[i
] = NULL
;
803 pci_free_consistent(lp
->pci_dev
,
804 PAGE_SIZE
* FD_PAGE_NUM
,
812 alloc_rxbuf_skb(dev
, lp
->pci_dev
,
813 &lp
->rx_skbs
[i
].skb_dma
);
814 if (!lp
->rx_skbs
[i
].skb
) {
816 free_rxbuf_skb(lp
->pci_dev
,
818 lp
->rx_skbs
[i
].skb_dma
);
819 lp
->rx_skbs
[i
].skb
= NULL
;
821 pci_free_consistent(lp
->pci_dev
,
822 PAGE_SIZE
* FD_PAGE_NUM
,
830 printk(KERN_DEBUG
"%s: FD buf %p DataBuf",
831 dev
->name
, lp
->fd_buf
);
832 #ifdef TC35815_USE_PACKEDBUFFER
834 for (i
= 0; i
< RX_BUF_NUM
; i
++)
835 printk(" %p", lp
->data_buf
[i
]);
839 for (i
= 0; i
< FD_PAGE_NUM
; i
++) {
840 clear_page((void *)((unsigned long)lp
->fd_buf
+ i
* PAGE_SIZE
));
843 fd_addr
= (unsigned long)lp
->fd_buf
;
845 /* Free Descriptors (for Receive) */
846 lp
->rfd_base
= (struct RxFD
*)fd_addr
;
847 fd_addr
+= sizeof(struct RxFD
) * RX_FD_NUM
;
848 for (i
= 0; i
< RX_FD_NUM
; i
++) {
849 lp
->rfd_base
[i
].fd
.FDCtl
= cpu_to_le32(FD_CownsFD
);
851 lp
->rfd_cur
= lp
->rfd_base
;
852 lp
->rfd_limit
= (struct RxFD
*)fd_addr
- (RX_FD_RESERVE
+ 1);
854 /* Transmit Descriptors */
855 lp
->tfd_base
= (struct TxFD
*)fd_addr
;
856 fd_addr
+= sizeof(struct TxFD
) * TX_FD_NUM
;
857 for (i
= 0; i
< TX_FD_NUM
; i
++) {
858 lp
->tfd_base
[i
].fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, &lp
->tfd_base
[i
+1]));
859 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
860 lp
->tfd_base
[i
].fd
.FDCtl
= cpu_to_le32(0);
862 lp
->tfd_base
[TX_FD_NUM
-1].fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, &lp
->tfd_base
[0]));
866 /* Buffer List (for Receive) */
867 lp
->fbl_ptr
= (struct FrFD
*)fd_addr
;
868 lp
->fbl_ptr
->fd
.FDNext
= cpu_to_le32(fd_virt_to_bus(lp
, lp
->fbl_ptr
));
869 lp
->fbl_ptr
->fd
.FDCtl
= cpu_to_le32(RX_BUF_NUM
| FD_CownsFD
);
870 #ifndef TC35815_USE_PACKEDBUFFER
872 * move all allocated skbs to head of rx_skbs[] array.
873 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
874 * tc35815_rx() had failed.
877 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
878 if (lp
->rx_skbs
[i
].skb
) {
879 if (i
!= lp
->fbl_count
) {
880 lp
->rx_skbs
[lp
->fbl_count
].skb
=
882 lp
->rx_skbs
[lp
->fbl_count
].skb_dma
=
883 lp
->rx_skbs
[i
].skb_dma
;
889 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
890 #ifdef TC35815_USE_PACKEDBUFFER
891 lp
->fbl_ptr
->bd
[i
].BuffData
= cpu_to_le32(lp
->data_buf_dma
[i
]);
893 if (i
>= lp
->fbl_count
) {
894 lp
->fbl_ptr
->bd
[i
].BuffData
= 0;
895 lp
->fbl_ptr
->bd
[i
].BDCtl
= 0;
898 lp
->fbl_ptr
->bd
[i
].BuffData
=
899 cpu_to_le32(lp
->rx_skbs
[i
].skb_dma
);
901 /* BDID is index of FrFD.bd[] */
902 lp
->fbl_ptr
->bd
[i
].BDCtl
=
903 cpu_to_le32(BD_CownsBD
| (i
<< BD_RxBDID_SHIFT
) |
906 #ifdef TC35815_USE_PACKEDBUFFER
910 printk(KERN_DEBUG
"%s: TxFD %p RxFD %p FrFD %p\n",
911 dev
->name
, lp
->tfd_base
, lp
->rfd_base
, lp
->fbl_ptr
);
916 tc35815_clear_queues(struct net_device
*dev
)
918 struct tc35815_local
*lp
= netdev_priv(dev
);
921 for (i
= 0; i
< TX_FD_NUM
; i
++) {
922 u32 fdsystem
= le32_to_cpu(lp
->tfd_base
[i
].fd
.FDSystem
);
923 struct sk_buff
*skb
=
924 fdsystem
!= 0xffffffff ?
925 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
927 if (lp
->tx_skbs
[i
].skb
!= skb
) {
928 printk("%s: tx_skbs mismatch(%d).\n", dev
->name
, i
);
932 BUG_ON(lp
->tx_skbs
[i
].skb
!= skb
);
935 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[i
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
936 lp
->tx_skbs
[i
].skb
= NULL
;
937 lp
->tx_skbs
[i
].skb_dma
= 0;
938 dev_kfree_skb_any(skb
);
940 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
943 tc35815_init_queues(dev
);
947 tc35815_free_queues(struct net_device
*dev
)
949 struct tc35815_local
*lp
= netdev_priv(dev
);
953 for (i
= 0; i
< TX_FD_NUM
; i
++) {
954 u32 fdsystem
= le32_to_cpu(lp
->tfd_base
[i
].fd
.FDSystem
);
955 struct sk_buff
*skb
=
956 fdsystem
!= 0xffffffff ?
957 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
959 if (lp
->tx_skbs
[i
].skb
!= skb
) {
960 printk("%s: tx_skbs mismatch(%d).\n", dev
->name
, i
);
964 BUG_ON(lp
->tx_skbs
[i
].skb
!= skb
);
968 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[i
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
969 lp
->tx_skbs
[i
].skb
= NULL
;
970 lp
->tx_skbs
[i
].skb_dma
= 0;
972 lp
->tfd_base
[i
].fd
.FDSystem
= cpu_to_le32(0xffffffff);
977 lp
->rfd_limit
= NULL
;
981 for (i
= 0; i
< RX_BUF_NUM
; i
++) {
982 #ifdef TC35815_USE_PACKEDBUFFER
983 if (lp
->data_buf
[i
]) {
984 free_rxbuf_page(lp
->pci_dev
,
985 lp
->data_buf
[i
], lp
->data_buf_dma
[i
]);
986 lp
->data_buf
[i
] = NULL
;
989 if (lp
->rx_skbs
[i
].skb
) {
990 free_rxbuf_skb(lp
->pci_dev
, lp
->rx_skbs
[i
].skb
,
991 lp
->rx_skbs
[i
].skb_dma
);
992 lp
->rx_skbs
[i
].skb
= NULL
;
997 pci_free_consistent(lp
->pci_dev
, PAGE_SIZE
* FD_PAGE_NUM
,
998 lp
->fd_buf
, lp
->fd_buf_dma
);
1004 dump_txfd(struct TxFD
*fd
)
1006 printk("TxFD(%p): %08x %08x %08x %08x\n", fd
,
1007 le32_to_cpu(fd
->fd
.FDNext
),
1008 le32_to_cpu(fd
->fd
.FDSystem
),
1009 le32_to_cpu(fd
->fd
.FDStat
),
1010 le32_to_cpu(fd
->fd
.FDCtl
));
1012 printk(" %08x %08x",
1013 le32_to_cpu(fd
->bd
.BuffData
),
1014 le32_to_cpu(fd
->bd
.BDCtl
));
1019 dump_rxfd(struct RxFD
*fd
)
1021 int i
, bd_count
= (le32_to_cpu(fd
->fd
.FDCtl
) & FD_BDCnt_MASK
) >> FD_BDCnt_SHIFT
;
1024 printk("RxFD(%p): %08x %08x %08x %08x\n", fd
,
1025 le32_to_cpu(fd
->fd
.FDNext
),
1026 le32_to_cpu(fd
->fd
.FDSystem
),
1027 le32_to_cpu(fd
->fd
.FDStat
),
1028 le32_to_cpu(fd
->fd
.FDCtl
));
1029 if (le32_to_cpu(fd
->fd
.FDCtl
) & FD_CownsFD
)
1032 for (i
= 0; i
< bd_count
; i
++)
1033 printk(" %08x %08x",
1034 le32_to_cpu(fd
->bd
[i
].BuffData
),
1035 le32_to_cpu(fd
->bd
[i
].BDCtl
));
1040 #if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER)
1042 dump_frfd(struct FrFD
*fd
)
1045 printk("FrFD(%p): %08x %08x %08x %08x\n", fd
,
1046 le32_to_cpu(fd
->fd
.FDNext
),
1047 le32_to_cpu(fd
->fd
.FDSystem
),
1048 le32_to_cpu(fd
->fd
.FDStat
),
1049 le32_to_cpu(fd
->fd
.FDCtl
));
1051 for (i
= 0; i
< RX_BUF_NUM
; i
++)
1052 printk(" %08x %08x",
1053 le32_to_cpu(fd
->bd
[i
].BuffData
),
1054 le32_to_cpu(fd
->bd
[i
].BDCtl
));
1061 panic_queues(struct net_device
*dev
)
1063 struct tc35815_local
*lp
= netdev_priv(dev
);
1066 printk("TxFD base %p, start %u, end %u\n",
1067 lp
->tfd_base
, lp
->tfd_start
, lp
->tfd_end
);
1068 printk("RxFD base %p limit %p cur %p\n",
1069 lp
->rfd_base
, lp
->rfd_limit
, lp
->rfd_cur
);
1070 printk("FrFD %p\n", lp
->fbl_ptr
);
1071 for (i
= 0; i
< TX_FD_NUM
; i
++)
1072 dump_txfd(&lp
->tfd_base
[i
]);
1073 for (i
= 0; i
< RX_FD_NUM
; i
++) {
1074 int bd_count
= dump_rxfd(&lp
->rfd_base
[i
]);
1075 i
+= (bd_count
+ 1) / 2; /* skip BDs */
1077 dump_frfd(lp
->fbl_ptr
);
1078 panic("%s: Illegal queue state.", dev
->name
);
1082 static void print_eth(const u8
*add
)
1084 DECLARE_MAC_BUF(mac
);
1086 printk(KERN_DEBUG
"print_eth(%p)\n", add
);
1087 printk(KERN_DEBUG
" %s =>", print_mac(mac
, add
+ 6));
1088 printk(KERN_CONT
" %s : %02x%02x\n",
1089 print_mac(mac
, add
), add
[12], add
[13]);
1092 static int tc35815_tx_full(struct net_device
*dev
)
1094 struct tc35815_local
*lp
= netdev_priv(dev
);
1095 return ((lp
->tfd_start
+ 1) % TX_FD_NUM
== lp
->tfd_end
);
1098 static void tc35815_restart(struct net_device
*dev
)
1100 struct tc35815_local
*lp
= netdev_priv(dev
);
1101 int pid
= lp
->phy_addr
;
1102 int do_phy_reset
= 1;
1103 del_timer(&lp
->timer
); /* Kill if running */
1105 if (lp
->mii_id
[0] == 0x0016 && (lp
->mii_id
[1] & 0xfc00) == 0xf800) {
1106 /* Resetting PHY cause problem on some chip... (SEEQ 80221) */
1111 tc_mdio_write(dev
, pid
, MII_BMCR
, BMCR_RESET
);
1114 if (!(tc_mdio_read(dev
, pid
, MII_BMCR
) & BMCR_RESET
))
1119 printk(KERN_ERR
"%s: BMCR reset failed.\n", dev
->name
);
1122 tc35815_chip_reset(dev
);
1123 tc35815_clear_queues(dev
);
1124 tc35815_chip_init(dev
);
1125 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1126 tc35815_set_multicast_list(dev
);
1129 static void tc35815_tx_timeout(struct net_device
*dev
)
1131 struct tc35815_local
*lp
= netdev_priv(dev
);
1132 struct tc35815_regs __iomem
*tr
=
1133 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1135 printk(KERN_WARNING
"%s: transmit timed out, status %#x\n",
1136 dev
->name
, tc_readl(&tr
->Tx_Stat
));
1138 /* Try to restart the adaptor. */
1139 spin_lock_irq(&lp
->lock
);
1140 tc35815_restart(dev
);
1141 spin_unlock_irq(&lp
->lock
);
1143 dev
->stats
.tx_errors
++;
1145 /* If we have space available to accept new transmit
1146 * requests, wake up the queueing layer. This would
1147 * be the case if the chipset_init() call above just
1148 * flushes out the tx queue and empties it.
1150 * If instead, the tx queue is retained then the
1151 * netif_wake_queue() call should be placed in the
1152 * TX completion interrupt handler of the driver instead
1155 if (!tc35815_tx_full(dev
))
1156 netif_wake_queue(dev
);
1160 * Open/initialize the board. This is called (in the current kernel)
1161 * sometime after booting when the 'ifconfig' program is run.
1163 * This routine should set everything up anew at each open, even
1164 * registers that "should" only need to be set once at boot, so that
1165 * there is non-reboot way to recover if something goes wrong.
1168 tc35815_open(struct net_device
*dev
)
1170 struct tc35815_local
*lp
= netdev_priv(dev
);
1173 * This is used if the interrupt line can turned off (shared).
1174 * See 3c503.c for an example of selecting the IRQ at config-time.
1176 if (request_irq(dev
->irq
, &tc35815_interrupt
, IRQF_SHARED
, dev
->name
, dev
)) {
1180 del_timer(&lp
->timer
); /* Kill if running */
1181 tc35815_chip_reset(dev
);
1183 if (tc35815_init_queues(dev
) != 0) {
1184 free_irq(dev
->irq
, dev
);
1189 napi_enable(&lp
->napi
);
1192 /* Reset the hardware here. Don't forget to set the station address. */
1193 spin_lock_irq(&lp
->lock
);
1194 tc35815_chip_init(dev
);
1195 spin_unlock_irq(&lp
->lock
);
1197 /* We are now ready to accept transmit requeusts from
1198 * the queueing layer of the networking.
1200 netif_start_queue(dev
);
1205 /* This will only be invoked if your driver is _not_ in XOFF state.
1206 * What this means is that you need not check it, and that this
1207 * invariant will hold if you make sure that the netif_*_queue()
1208 * calls are done at the proper times.
1210 static int tc35815_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1212 struct tc35815_local
*lp
= netdev_priv(dev
);
1214 unsigned long flags
;
1216 /* If some error occurs while trying to transmit this
1217 * packet, you should return '1' from this function.
1218 * In such a case you _may not_ do anything to the
1219 * SKB, it is still owned by the network queueing
1220 * layer when an error is returned. This means you
1221 * may not modify any SKB fields, you may not free
1225 /* This is the most common case for modern hardware.
1226 * The spinlock protects this code from the TX complete
1227 * hardware interrupt handler. Queue flow control is
1228 * thus managed under this lock as well.
1230 spin_lock_irqsave(&lp
->lock
, flags
);
1232 /* failsafe... (handle txdone now if half of FDs are used) */
1233 if ((lp
->tfd_start
+ TX_FD_NUM
- lp
->tfd_end
) % TX_FD_NUM
>
1235 tc35815_txdone(dev
);
1237 if (netif_msg_pktdata(lp
))
1238 print_eth(skb
->data
);
1240 if (lp
->tx_skbs
[lp
->tfd_start
].skb
) {
1241 printk("%s: tx_skbs conflict.\n", dev
->name
);
1245 BUG_ON(lp
->tx_skbs
[lp
->tfd_start
].skb
);
1247 lp
->tx_skbs
[lp
->tfd_start
].skb
= skb
;
1248 lp
->tx_skbs
[lp
->tfd_start
].skb_dma
= pci_map_single(lp
->pci_dev
, skb
->data
, skb
->len
, PCI_DMA_TODEVICE
);
1251 txfd
= &lp
->tfd_base
[lp
->tfd_start
];
1252 txfd
->bd
.BuffData
= cpu_to_le32(lp
->tx_skbs
[lp
->tfd_start
].skb_dma
);
1253 txfd
->bd
.BDCtl
= cpu_to_le32(skb
->len
);
1254 txfd
->fd
.FDSystem
= cpu_to_le32(lp
->tfd_start
);
1255 txfd
->fd
.FDCtl
= cpu_to_le32(FD_CownsFD
| (1 << FD_BDCnt_SHIFT
));
1257 if (lp
->tfd_start
== lp
->tfd_end
) {
1258 struct tc35815_regs __iomem
*tr
=
1259 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1260 /* Start DMA Transmitter. */
1261 txfd
->fd
.FDNext
|= cpu_to_le32(FD_Next_EOL
);
1263 txfd
->fd
.FDCtl
|= cpu_to_le32(FD_FrmOpt_IntTx
);
1265 if (netif_msg_tx_queued(lp
)) {
1266 printk("%s: starting TxFD.\n", dev
->name
);
1269 tc_writel(fd_virt_to_bus(lp
, txfd
), &tr
->TxFrmPtr
);
1271 txfd
->fd
.FDNext
&= cpu_to_le32(~FD_Next_EOL
);
1272 if (netif_msg_tx_queued(lp
)) {
1273 printk("%s: queueing TxFD.\n", dev
->name
);
1277 lp
->tfd_start
= (lp
->tfd_start
+ 1) % TX_FD_NUM
;
1279 dev
->trans_start
= jiffies
;
1281 /* If we just used up the very last entry in the
1282 * TX ring on this device, tell the queueing
1283 * layer to send no more.
1285 if (tc35815_tx_full(dev
)) {
1286 if (netif_msg_tx_queued(lp
))
1287 printk(KERN_WARNING
"%s: TxFD Exhausted.\n", dev
->name
);
1288 netif_stop_queue(dev
);
1291 /* When the TX completion hw interrupt arrives, this
1292 * is when the transmit statistics are updated.
1295 spin_unlock_irqrestore(&lp
->lock
, flags
);
1299 #define FATAL_ERROR_INT \
1300 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
1301 static void tc35815_fatal_error_interrupt(struct net_device
*dev
, u32 status
)
1304 printk(KERN_WARNING
"%s: Fatal Error Intterrupt (%#x):",
1306 if (status
& Int_IntPCI
)
1308 if (status
& Int_DmParErr
)
1309 printk(" DmParErr");
1310 if (status
& Int_IntNRAbt
)
1311 printk(" IntNRAbt");
1314 panic("%s: Too many fatal errors.", dev
->name
);
1315 printk(KERN_WARNING
"%s: Resetting ...\n", dev
->name
);
1316 /* Try to restart the adaptor. */
1317 tc35815_restart(dev
);
1321 static int tc35815_do_interrupt(struct net_device
*dev
, u32 status
, int limit
)
1323 static int tc35815_do_interrupt(struct net_device
*dev
, u32 status
)
1326 struct tc35815_local
*lp
= netdev_priv(dev
);
1327 struct tc35815_regs __iomem
*tr
=
1328 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1331 /* Fatal errors... */
1332 if (status
& FATAL_ERROR_INT
) {
1333 tc35815_fatal_error_interrupt(dev
, status
);
1336 /* recoverable errors */
1337 if (status
& Int_IntFDAEx
) {
1338 /* disable FDAEx int. (until we make rooms...) */
1339 tc_writel(tc_readl(&tr
->Int_En
) & ~Int_FDAExEn
, &tr
->Int_En
);
1341 "%s: Free Descriptor Area Exhausted (%#x).\n",
1343 dev
->stats
.rx_dropped
++;
1346 if (status
& Int_IntBLEx
) {
1347 /* disable BLEx int. (until we make rooms...) */
1348 tc_writel(tc_readl(&tr
->Int_En
) & ~Int_BLExEn
, &tr
->Int_En
);
1350 "%s: Buffer List Exhausted (%#x).\n",
1352 dev
->stats
.rx_dropped
++;
1355 if (status
& Int_IntExBD
) {
1357 "%s: Excessive Buffer Descriptiors (%#x).\n",
1359 dev
->stats
.rx_length_errors
++;
1363 /* normal notification */
1364 if (status
& Int_IntMacRx
) {
1365 /* Got a packet(s). */
1367 ret
= tc35815_rx(dev
, limit
);
1372 lp
->lstats
.rx_ints
++;
1374 if (status
& Int_IntMacTx
) {
1375 /* Transmit complete. */
1376 lp
->lstats
.tx_ints
++;
1377 tc35815_txdone(dev
);
1378 netif_wake_queue(dev
);
1385 * The typical workload of the driver:
1386 * Handle the network interface interrupts.
1388 static irqreturn_t
tc35815_interrupt(int irq
, void *dev_id
)
1390 struct net_device
*dev
= dev_id
;
1391 struct tc35815_local
*lp
= netdev_priv(dev
);
1392 struct tc35815_regs __iomem
*tr
=
1393 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1395 u32 dmactl
= tc_readl(&tr
->DMA_Ctl
);
1397 if (!(dmactl
& DMA_IntMask
)) {
1398 /* disable interrupts */
1399 tc_writel(dmactl
| DMA_IntMask
, &tr
->DMA_Ctl
);
1400 if (netif_rx_schedule_prep(dev
, &lp
->napi
))
1401 __netif_rx_schedule(dev
, &lp
->napi
);
1403 printk(KERN_ERR
"%s: interrupt taken in poll\n",
1407 (void)tc_readl(&tr
->Int_Src
); /* flush */
1415 spin_lock(&lp
->lock
);
1416 status
= tc_readl(&tr
->Int_Src
);
1417 tc_writel(status
, &tr
->Int_Src
); /* write to clear */
1418 handled
= tc35815_do_interrupt(dev
, status
);
1419 (void)tc_readl(&tr
->Int_Src
); /* flush */
1420 spin_unlock(&lp
->lock
);
1421 return IRQ_RETVAL(handled
>= 0);
1422 #endif /* TC35815_NAPI */
1425 #ifdef CONFIG_NET_POLL_CONTROLLER
1426 static void tc35815_poll_controller(struct net_device
*dev
)
1428 disable_irq(dev
->irq
);
1429 tc35815_interrupt(dev
->irq
, dev
);
1430 enable_irq(dev
->irq
);
1434 /* We have a good packet(s), get it/them out of the buffers. */
1437 tc35815_rx(struct net_device
*dev
, int limit
)
1440 tc35815_rx(struct net_device
*dev
)
1443 struct tc35815_local
*lp
= netdev_priv(dev
);
1446 int buf_free_count
= 0;
1447 int fd_free_count
= 0;
1452 while (!((fdctl
= le32_to_cpu(lp
->rfd_cur
->fd
.FDCtl
)) & FD_CownsFD
)) {
1453 int status
= le32_to_cpu(lp
->rfd_cur
->fd
.FDStat
);
1454 int pkt_len
= fdctl
& FD_FDLength_MASK
;
1455 int bd_count
= (fdctl
& FD_BDCnt_MASK
) >> FD_BDCnt_SHIFT
;
1457 struct RxFD
*next_rfd
;
1459 #if (RX_CTL_CMD & Rx_StripCRC) == 0
1463 if (netif_msg_rx_status(lp
))
1464 dump_rxfd(lp
->rfd_cur
);
1465 if (status
& Rx_Good
) {
1466 struct sk_buff
*skb
;
1467 unsigned char *data
;
1469 #ifdef TC35815_USE_PACKEDBUFFER
1477 #ifdef TC35815_USE_PACKEDBUFFER
1478 BUG_ON(bd_count
> 2);
1479 skb
= dev_alloc_skb(pkt_len
+ 2); /* +2: for reserve */
1481 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n",
1483 dev
->stats
.rx_dropped
++;
1486 skb_reserve(skb
, 2); /* 16 bit alignment */
1488 data
= skb_put(skb
, pkt_len
);
1490 /* copy from receive buffer */
1493 while (offset
< pkt_len
&& cur_bd
< bd_count
) {
1494 int len
= le32_to_cpu(lp
->rfd_cur
->bd
[cur_bd
].BDCtl
) &
1496 dma_addr_t dma
= le32_to_cpu(lp
->rfd_cur
->bd
[cur_bd
].BuffData
);
1497 void *rxbuf
= rxbuf_bus_to_virt(lp
, dma
);
1498 if (offset
+ len
> pkt_len
)
1499 len
= pkt_len
- offset
;
1500 #ifdef TC35815_DMA_SYNC_ONDEMAND
1501 pci_dma_sync_single_for_cpu(lp
->pci_dev
,
1503 PCI_DMA_FROMDEVICE
);
1505 memcpy(data
+ offset
, rxbuf
, len
);
1506 #ifdef TC35815_DMA_SYNC_ONDEMAND
1507 pci_dma_sync_single_for_device(lp
->pci_dev
,
1509 PCI_DMA_FROMDEVICE
);
1514 #else /* TC35815_USE_PACKEDBUFFER */
1515 BUG_ON(bd_count
> 1);
1516 cur_bd
= (le32_to_cpu(lp
->rfd_cur
->bd
[0].BDCtl
)
1517 & BD_RxBDID_MASK
) >> BD_RxBDID_SHIFT
;
1519 if (cur_bd
>= RX_BUF_NUM
) {
1520 printk("%s: invalid BDID.\n", dev
->name
);
1523 BUG_ON(lp
->rx_skbs
[cur_bd
].skb_dma
!=
1524 (le32_to_cpu(lp
->rfd_cur
->bd
[0].BuffData
) & ~3));
1525 if (!lp
->rx_skbs
[cur_bd
].skb
) {
1526 printk("%s: NULL skb.\n", dev
->name
);
1530 BUG_ON(cur_bd
>= RX_BUF_NUM
);
1532 skb
= lp
->rx_skbs
[cur_bd
].skb
;
1533 prefetch(skb
->data
);
1534 lp
->rx_skbs
[cur_bd
].skb
= NULL
;
1536 pci_unmap_single(lp
->pci_dev
,
1537 lp
->rx_skbs
[cur_bd
].skb_dma
,
1538 RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1539 if (!HAVE_DMA_RXALIGN(lp
))
1540 memmove(skb
->data
, skb
->data
- 2, pkt_len
);
1541 data
= skb_put(skb
, pkt_len
);
1542 #endif /* TC35815_USE_PACKEDBUFFER */
1543 if (netif_msg_pktdata(lp
))
1545 skb
->protocol
= eth_type_trans(skb
, dev
);
1547 netif_receive_skb(skb
);
1552 dev
->last_rx
= jiffies
;
1553 dev
->stats
.rx_packets
++;
1554 dev
->stats
.rx_bytes
+= pkt_len
;
1556 dev
->stats
.rx_errors
++;
1557 printk(KERN_DEBUG
"%s: Rx error (status %x)\n",
1558 dev
->name
, status
& Rx_Stat_Mask
);
1559 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1560 if ((status
& Rx_LongErr
) && (status
& Rx_CRCErr
)) {
1561 status
&= ~(Rx_LongErr
|Rx_CRCErr
);
1564 if (status
& Rx_LongErr
)
1565 dev
->stats
.rx_length_errors
++;
1566 if (status
& Rx_Over
)
1567 dev
->stats
.rx_fifo_errors
++;
1568 if (status
& Rx_CRCErr
)
1569 dev
->stats
.rx_crc_errors
++;
1570 if (status
& Rx_Align
)
1571 dev
->stats
.rx_frame_errors
++;
1575 /* put Free Buffer back to controller */
1576 int bdctl
= le32_to_cpu(lp
->rfd_cur
->bd
[bd_count
- 1].BDCtl
);
1578 (bdctl
& BD_RxBDID_MASK
) >> BD_RxBDID_SHIFT
;
1580 if (id
>= RX_BUF_NUM
) {
1581 printk("%s: invalid BDID.\n", dev
->name
);
1585 BUG_ON(id
>= RX_BUF_NUM
);
1587 /* free old buffers */
1588 #ifdef TC35815_USE_PACKEDBUFFER
1589 while (lp
->fbl_curid
!= id
)
1591 while (lp
->fbl_count
< RX_BUF_NUM
)
1594 #ifdef TC35815_USE_PACKEDBUFFER
1595 unsigned char curid
= lp
->fbl_curid
;
1597 unsigned char curid
=
1598 (id
+ 1 + lp
->fbl_count
) % RX_BUF_NUM
;
1600 struct BDesc
*bd
= &lp
->fbl_ptr
->bd
[curid
];
1602 bdctl
= le32_to_cpu(bd
->BDCtl
);
1603 if (bdctl
& BD_CownsBD
) {
1604 printk("%s: Freeing invalid BD.\n",
1609 /* pass BD to controller */
1610 #ifndef TC35815_USE_PACKEDBUFFER
1611 if (!lp
->rx_skbs
[curid
].skb
) {
1612 lp
->rx_skbs
[curid
].skb
=
1613 alloc_rxbuf_skb(dev
,
1615 &lp
->rx_skbs
[curid
].skb_dma
);
1616 if (!lp
->rx_skbs
[curid
].skb
)
1617 break; /* try on next reception */
1618 bd
->BuffData
= cpu_to_le32(lp
->rx_skbs
[curid
].skb_dma
);
1620 #endif /* TC35815_USE_PACKEDBUFFER */
1621 /* Note: BDLength was modified by chip. */
1622 bd
->BDCtl
= cpu_to_le32(BD_CownsBD
|
1623 (curid
<< BD_RxBDID_SHIFT
) |
1625 #ifdef TC35815_USE_PACKEDBUFFER
1626 lp
->fbl_curid
= (curid
+ 1) % RX_BUF_NUM
;
1627 if (netif_msg_rx_status(lp
)) {
1628 printk("%s: Entering new FBD %d\n",
1629 dev
->name
, lp
->fbl_curid
);
1630 dump_frfd(lp
->fbl_ptr
);
1639 /* put RxFD back to controller */
1641 next_rfd
= fd_bus_to_virt(lp
,
1642 le32_to_cpu(lp
->rfd_cur
->fd
.FDNext
));
1643 if (next_rfd
< lp
->rfd_base
|| next_rfd
> lp
->rfd_limit
) {
1644 printk("%s: RxFD FDNext invalid.\n", dev
->name
);
1648 for (i
= 0; i
< (bd_count
+ 1) / 2 + 1; i
++) {
1649 /* pass FD to controller */
1651 lp
->rfd_cur
->fd
.FDNext
= cpu_to_le32(0xdeaddead);
1653 lp
->rfd_cur
->fd
.FDNext
= cpu_to_le32(FD_Next_EOL
);
1655 lp
->rfd_cur
->fd
.FDCtl
= cpu_to_le32(FD_CownsFD
);
1659 if (lp
->rfd_cur
> lp
->rfd_limit
)
1660 lp
->rfd_cur
= lp
->rfd_base
;
1662 if (lp
->rfd_cur
!= next_rfd
)
1663 printk("rfd_cur = %p, next_rfd %p\n",
1664 lp
->rfd_cur
, next_rfd
);
1668 /* re-enable BL/FDA Exhaust interrupts. */
1669 if (fd_free_count
) {
1670 struct tc35815_regs __iomem
*tr
=
1671 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1672 u32 en
, en_old
= tc_readl(&tr
->Int_En
);
1673 en
= en_old
| Int_FDAExEn
;
1677 tc_writel(en
, &tr
->Int_En
);
1685 static int tc35815_poll(struct napi_struct
*napi
, int budget
)
1687 struct tc35815_local
*lp
= container_of(napi
, struct tc35815_local
, napi
);
1688 struct net_device
*dev
= lp
->dev
;
1689 struct tc35815_regs __iomem
*tr
=
1690 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1691 int received
= 0, handled
;
1694 spin_lock(&lp
->lock
);
1695 status
= tc_readl(&tr
->Int_Src
);
1697 tc_writel(status
, &tr
->Int_Src
); /* write to clear */
1699 handled
= tc35815_do_interrupt(dev
, status
, limit
);
1701 received
+= handled
;
1702 if (received
>= budget
)
1705 status
= tc_readl(&tr
->Int_Src
);
1707 spin_unlock(&lp
->lock
);
1709 if (received
< budget
) {
1710 netif_rx_complete(dev
, napi
);
1711 /* enable interrupts */
1712 tc_writel(tc_readl(&tr
->DMA_Ctl
) & ~DMA_IntMask
, &tr
->DMA_Ctl
);
1718 #ifdef NO_CHECK_CARRIER
1719 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1721 #define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1725 tc35815_check_tx_stat(struct net_device
*dev
, int status
)
1727 struct tc35815_local
*lp
= netdev_priv(dev
);
1728 const char *msg
= NULL
;
1730 /* count collisions */
1731 if (status
& Tx_ExColl
)
1732 dev
->stats
.collisions
+= 16;
1733 if (status
& Tx_TxColl_MASK
)
1734 dev
->stats
.collisions
+= status
& Tx_TxColl_MASK
;
1736 #ifndef NO_CHECK_CARRIER
1737 /* TX4939 does not have NCarr */
1738 if (lp
->boardtype
== TC35815_TX4939
)
1739 status
&= ~Tx_NCarr
;
1740 #ifdef WORKAROUND_LOSTCAR
1741 /* WORKAROUND: ignore LostCrS in full duplex operation */
1742 if ((lp
->timer_state
!= asleep
&& lp
->timer_state
!= lcheck
)
1744 status
&= ~Tx_NCarr
;
1748 if (!(status
& TX_STA_ERR
)) {
1750 dev
->stats
.tx_packets
++;
1754 dev
->stats
.tx_errors
++;
1755 if (status
& Tx_ExColl
) {
1756 dev
->stats
.tx_aborted_errors
++;
1757 msg
= "Excessive Collision.";
1759 if (status
& Tx_Under
) {
1760 dev
->stats
.tx_fifo_errors
++;
1761 msg
= "Tx FIFO Underrun.";
1762 if (lp
->lstats
.tx_underrun
< TX_THRESHOLD_KEEP_LIMIT
) {
1763 lp
->lstats
.tx_underrun
++;
1764 if (lp
->lstats
.tx_underrun
>= TX_THRESHOLD_KEEP_LIMIT
) {
1765 struct tc35815_regs __iomem
*tr
=
1766 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1767 tc_writel(TX_THRESHOLD_MAX
, &tr
->TxThrsh
);
1768 msg
= "Tx FIFO Underrun.Change Tx threshold to max.";
1772 if (status
& Tx_Defer
) {
1773 dev
->stats
.tx_fifo_errors
++;
1774 msg
= "Excessive Deferral.";
1776 #ifndef NO_CHECK_CARRIER
1777 if (status
& Tx_NCarr
) {
1778 dev
->stats
.tx_carrier_errors
++;
1779 msg
= "Lost Carrier Sense.";
1782 if (status
& Tx_LateColl
) {
1783 dev
->stats
.tx_aborted_errors
++;
1784 msg
= "Late Collision.";
1786 if (status
& Tx_TxPar
) {
1787 dev
->stats
.tx_fifo_errors
++;
1788 msg
= "Transmit Parity Error.";
1790 if (status
& Tx_SQErr
) {
1791 dev
->stats
.tx_heartbeat_errors
++;
1792 msg
= "Signal Quality Error.";
1794 if (msg
&& netif_msg_tx_err(lp
))
1795 printk(KERN_WARNING
"%s: %s (%#x)\n", dev
->name
, msg
, status
);
1798 /* This handles TX complete events posted by the device
1802 tc35815_txdone(struct net_device
*dev
)
1804 struct tc35815_local
*lp
= netdev_priv(dev
);
1808 txfd
= &lp
->tfd_base
[lp
->tfd_end
];
1809 while (lp
->tfd_start
!= lp
->tfd_end
&&
1810 !((fdctl
= le32_to_cpu(txfd
->fd
.FDCtl
)) & FD_CownsFD
)) {
1811 int status
= le32_to_cpu(txfd
->fd
.FDStat
);
1812 struct sk_buff
*skb
;
1813 unsigned long fdnext
= le32_to_cpu(txfd
->fd
.FDNext
);
1814 u32 fdsystem
= le32_to_cpu(txfd
->fd
.FDSystem
);
1816 if (netif_msg_tx_done(lp
)) {
1817 printk("%s: complete TxFD.\n", dev
->name
);
1820 tc35815_check_tx_stat(dev
, status
);
1822 skb
= fdsystem
!= 0xffffffff ?
1823 lp
->tx_skbs
[fdsystem
].skb
: NULL
;
1825 if (lp
->tx_skbs
[lp
->tfd_end
].skb
!= skb
) {
1826 printk("%s: tx_skbs mismatch.\n", dev
->name
);
1830 BUG_ON(lp
->tx_skbs
[lp
->tfd_end
].skb
!= skb
);
1833 dev
->stats
.tx_bytes
+= skb
->len
;
1834 pci_unmap_single(lp
->pci_dev
, lp
->tx_skbs
[lp
->tfd_end
].skb_dma
, skb
->len
, PCI_DMA_TODEVICE
);
1835 lp
->tx_skbs
[lp
->tfd_end
].skb
= NULL
;
1836 lp
->tx_skbs
[lp
->tfd_end
].skb_dma
= 0;
1838 dev_kfree_skb_any(skb
);
1840 dev_kfree_skb_irq(skb
);
1843 txfd
->fd
.FDSystem
= cpu_to_le32(0xffffffff);
1845 lp
->tfd_end
= (lp
->tfd_end
+ 1) % TX_FD_NUM
;
1846 txfd
= &lp
->tfd_base
[lp
->tfd_end
];
1848 if ((fdnext
& ~FD_Next_EOL
) != fd_virt_to_bus(lp
, txfd
)) {
1849 printk("%s: TxFD FDNext invalid.\n", dev
->name
);
1853 if (fdnext
& FD_Next_EOL
) {
1854 /* DMA Transmitter has been stopping... */
1855 if (lp
->tfd_end
!= lp
->tfd_start
) {
1856 struct tc35815_regs __iomem
*tr
=
1857 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1858 int head
= (lp
->tfd_start
+ TX_FD_NUM
- 1) % TX_FD_NUM
;
1859 struct TxFD
* txhead
= &lp
->tfd_base
[head
];
1860 int qlen
= (lp
->tfd_start
+ TX_FD_NUM
1861 - lp
->tfd_end
) % TX_FD_NUM
;
1864 if (!(le32_to_cpu(txfd
->fd
.FDCtl
) & FD_CownsFD
)) {
1865 printk("%s: TxFD FDCtl invalid.\n", dev
->name
);
1869 /* log max queue length */
1870 if (lp
->lstats
.max_tx_qlen
< qlen
)
1871 lp
->lstats
.max_tx_qlen
= qlen
;
1874 /* start DMA Transmitter again */
1875 txhead
->fd
.FDNext
|= cpu_to_le32(FD_Next_EOL
);
1877 txhead
->fd
.FDCtl
|= cpu_to_le32(FD_FrmOpt_IntTx
);
1879 if (netif_msg_tx_queued(lp
)) {
1880 printk("%s: start TxFD on queue.\n",
1884 tc_writel(fd_virt_to_bus(lp
, txfd
), &tr
->TxFrmPtr
);
1890 /* If we had stopped the queue due to a "tx full"
1891 * condition, and space has now been made available,
1892 * wake up the queue.
1894 if (netif_queue_stopped(dev
) && ! tc35815_tx_full(dev
))
1895 netif_wake_queue(dev
);
1898 /* The inverse routine to tc35815_open(). */
1900 tc35815_close(struct net_device
*dev
)
1902 struct tc35815_local
*lp
= netdev_priv(dev
);
1904 netif_stop_queue(dev
);
1906 napi_disable(&lp
->napi
);
1909 /* Flush the Tx and disable Rx here. */
1911 del_timer(&lp
->timer
); /* Kill if running */
1912 tc35815_chip_reset(dev
);
1913 free_irq(dev
->irq
, dev
);
1915 tc35815_free_queues(dev
);
1922 * Get the current statistics.
1923 * This may be called with the card open or closed.
1925 static struct net_device_stats
*tc35815_get_stats(struct net_device
*dev
)
1927 struct tc35815_regs __iomem
*tr
=
1928 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1929 if (netif_running(dev
))
1930 /* Update the statistics from the device registers. */
1931 dev
->stats
.rx_missed_errors
= tc_readl(&tr
->Miss_Cnt
);
1936 static void tc35815_set_cam_entry(struct net_device
*dev
, int index
, unsigned char *addr
)
1938 struct tc35815_local
*lp
= netdev_priv(dev
);
1939 struct tc35815_regs __iomem
*tr
=
1940 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1941 int cam_index
= index
* 6;
1944 DECLARE_MAC_BUF(mac
);
1946 saved_addr
= tc_readl(&tr
->CAM_Adr
);
1948 if (netif_msg_hw(lp
))
1949 printk(KERN_DEBUG
"%s: CAM %d: %s\n",
1950 dev
->name
, index
, print_mac(mac
, addr
));
1952 /* read modify write */
1953 tc_writel(cam_index
- 2, &tr
->CAM_Adr
);
1954 cam_data
= tc_readl(&tr
->CAM_Data
) & 0xffff0000;
1955 cam_data
|= addr
[0] << 8 | addr
[1];
1956 tc_writel(cam_data
, &tr
->CAM_Data
);
1957 /* write whole word */
1958 tc_writel(cam_index
+ 2, &tr
->CAM_Adr
);
1959 cam_data
= (addr
[2] << 24) | (addr
[3] << 16) | (addr
[4] << 8) | addr
[5];
1960 tc_writel(cam_data
, &tr
->CAM_Data
);
1962 /* write whole word */
1963 tc_writel(cam_index
, &tr
->CAM_Adr
);
1964 cam_data
= (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) | addr
[3];
1965 tc_writel(cam_data
, &tr
->CAM_Data
);
1966 /* read modify write */
1967 tc_writel(cam_index
+ 4, &tr
->CAM_Adr
);
1968 cam_data
= tc_readl(&tr
->CAM_Data
) & 0x0000ffff;
1969 cam_data
|= addr
[4] << 24 | (addr
[5] << 16);
1970 tc_writel(cam_data
, &tr
->CAM_Data
);
1973 tc_writel(saved_addr
, &tr
->CAM_Adr
);
1978 * Set or clear the multicast filter for this adaptor.
1979 * num_addrs == -1 Promiscuous mode, receive all packets
1980 * num_addrs == 0 Normal mode, clear multicast list
1981 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1982 * and do best-effort filtering.
1985 tc35815_set_multicast_list(struct net_device
*dev
)
1987 struct tc35815_regs __iomem
*tr
=
1988 (struct tc35815_regs __iomem
*)dev
->base_addr
;
1990 if (dev
->flags
&IFF_PROMISC
)
1992 #ifdef WORKAROUND_100HALF_PROMISC
1993 /* With some (all?) 100MHalf HUB, controller will hang
1994 * if we enabled promiscuous mode before linkup... */
1995 struct tc35815_local
*lp
= netdev_priv(dev
);
1996 int pid
= lp
->phy_addr
;
1997 if (!(tc_mdio_read(dev
, pid
, MII_BMSR
) & BMSR_LSTATUS
))
2000 /* Enable promiscuous mode */
2001 tc_writel(CAM_CompEn
| CAM_BroadAcc
| CAM_GroupAcc
| CAM_StationAcc
, &tr
->CAM_Ctl
);
2003 else if((dev
->flags
&IFF_ALLMULTI
) || dev
->mc_count
> CAM_ENTRY_MAX
- 3)
2005 /* CAM 0, 1, 20 are reserved. */
2006 /* Disable promiscuous mode, use normal mode. */
2007 tc_writel(CAM_CompEn
| CAM_BroadAcc
| CAM_GroupAcc
, &tr
->CAM_Ctl
);
2009 else if(dev
->mc_count
)
2011 struct dev_mc_list
* cur_addr
= dev
->mc_list
;
2013 int ena_bits
= CAM_Ena_Bit(CAM_ENTRY_SOURCE
);
2015 tc_writel(0, &tr
->CAM_Ctl
);
2016 /* Walk the address list, and load the filter */
2017 for (i
= 0; i
< dev
->mc_count
; i
++, cur_addr
= cur_addr
->next
) {
2020 /* entry 0,1 is reserved. */
2021 tc35815_set_cam_entry(dev
, i
+ 2, cur_addr
->dmi_addr
);
2022 ena_bits
|= CAM_Ena_Bit(i
+ 2);
2024 tc_writel(ena_bits
, &tr
->CAM_Ena
);
2025 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2028 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE
), &tr
->CAM_Ena
);
2029 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2033 static void tc35815_get_drvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
2035 struct tc35815_local
*lp
= netdev_priv(dev
);
2036 strcpy(info
->driver
, MODNAME
);
2037 strcpy(info
->version
, DRV_VERSION
);
2038 strcpy(info
->bus_info
, pci_name(lp
->pci_dev
));
2041 static int tc35815_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2043 struct tc35815_local
*lp
= netdev_priv(dev
);
2044 spin_lock_irq(&lp
->lock
);
2045 mii_ethtool_gset(&lp
->mii
, cmd
);
2046 spin_unlock_irq(&lp
->lock
);
2050 static int tc35815_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
2052 struct tc35815_local
*lp
= netdev_priv(dev
);
2054 #if 1 /* use our negotiation method... */
2055 /* Verify the settings we care about. */
2056 if (cmd
->autoneg
!= AUTONEG_ENABLE
&&
2057 cmd
->autoneg
!= AUTONEG_DISABLE
)
2059 if (cmd
->autoneg
== AUTONEG_DISABLE
&&
2060 ((cmd
->speed
!= SPEED_100
&&
2061 cmd
->speed
!= SPEED_10
) ||
2062 (cmd
->duplex
!= DUPLEX_HALF
&&
2063 cmd
->duplex
!= DUPLEX_FULL
)))
2066 /* Ok, do it to it. */
2067 spin_lock_irq(&lp
->lock
);
2068 del_timer(&lp
->timer
);
2069 tc35815_start_auto_negotiation(dev
, cmd
);
2070 spin_unlock_irq(&lp
->lock
);
2073 spin_lock_irq(&lp
->lock
);
2074 rc
= mii_ethtool_sset(&lp
->mii
, cmd
);
2075 spin_unlock_irq(&lp
->lock
);
2080 static int tc35815_nway_reset(struct net_device
*dev
)
2082 struct tc35815_local
*lp
= netdev_priv(dev
);
2084 spin_lock_irq(&lp
->lock
);
2085 rc
= mii_nway_restart(&lp
->mii
);
2086 spin_unlock_irq(&lp
->lock
);
2090 static u32
tc35815_get_link(struct net_device
*dev
)
2092 struct tc35815_local
*lp
= netdev_priv(dev
);
2094 spin_lock_irq(&lp
->lock
);
2095 rc
= mii_link_ok(&lp
->mii
);
2096 spin_unlock_irq(&lp
->lock
);
2100 static u32
tc35815_get_msglevel(struct net_device
*dev
)
2102 struct tc35815_local
*lp
= netdev_priv(dev
);
2103 return lp
->msg_enable
;
2106 static void tc35815_set_msglevel(struct net_device
*dev
, u32 datum
)
2108 struct tc35815_local
*lp
= netdev_priv(dev
);
2109 lp
->msg_enable
= datum
;
2112 static int tc35815_get_sset_count(struct net_device
*dev
, int sset
)
2114 struct tc35815_local
*lp
= netdev_priv(dev
);
2118 return sizeof(lp
->lstats
) / sizeof(int);
2124 static void tc35815_get_ethtool_stats(struct net_device
*dev
, struct ethtool_stats
*stats
, u64
*data
)
2126 struct tc35815_local
*lp
= netdev_priv(dev
);
2127 data
[0] = lp
->lstats
.max_tx_qlen
;
2128 data
[1] = lp
->lstats
.tx_ints
;
2129 data
[2] = lp
->lstats
.rx_ints
;
2130 data
[3] = lp
->lstats
.tx_underrun
;
2134 const char str
[ETH_GSTRING_LEN
];
2135 } ethtool_stats_keys
[] = {
2142 static void tc35815_get_strings(struct net_device
*dev
, u32 stringset
, u8
*data
)
2144 memcpy(data
, ethtool_stats_keys
, sizeof(ethtool_stats_keys
));
2147 static const struct ethtool_ops tc35815_ethtool_ops
= {
2148 .get_drvinfo
= tc35815_get_drvinfo
,
2149 .get_settings
= tc35815_get_settings
,
2150 .set_settings
= tc35815_set_settings
,
2151 .nway_reset
= tc35815_nway_reset
,
2152 .get_link
= tc35815_get_link
,
2153 .get_msglevel
= tc35815_get_msglevel
,
2154 .set_msglevel
= tc35815_set_msglevel
,
2155 .get_strings
= tc35815_get_strings
,
2156 .get_sset_count
= tc35815_get_sset_count
,
2157 .get_ethtool_stats
= tc35815_get_ethtool_stats
,
2160 static int tc35815_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
2162 struct tc35815_local
*lp
= netdev_priv(dev
);
2165 if (!netif_running(dev
))
2168 spin_lock_irq(&lp
->lock
);
2169 rc
= generic_mii_ioctl(&lp
->mii
, if_mii(rq
), cmd
, NULL
);
2170 spin_unlock_irq(&lp
->lock
);
2175 static int tc_mdio_read(struct net_device
*dev
, int phy_id
, int location
)
2177 struct tc35815_regs __iomem
*tr
=
2178 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2180 tc_writel(MD_CA_Busy
| (phy_id
<< 5) | location
, &tr
->MD_CA
);
2181 while (tc_readl(&tr
->MD_CA
) & MD_CA_Busy
)
2183 data
= tc_readl(&tr
->MD_Data
);
2184 return data
& 0xffff;
2187 static void tc_mdio_write(struct net_device
*dev
, int phy_id
, int location
,
2190 struct tc35815_regs __iomem
*tr
=
2191 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2192 tc_writel(val
, &tr
->MD_Data
);
2193 tc_writel(MD_CA_Busy
| MD_CA_Wr
| (phy_id
<< 5) | location
, &tr
->MD_CA
);
2194 while (tc_readl(&tr
->MD_CA
) & MD_CA_Busy
)
2198 /* Auto negotiation. The scheme is very simple. We have a timer routine
2199 * that keeps watching the auto negotiation process as it progresses.
2200 * The DP83840 is first told to start doing it's thing, we set up the time
2201 * and place the timer state machine in it's initial state.
2203 * Here the timer peeks at the DP83840 status registers at each click to see
2204 * if the auto negotiation has completed, we assume here that the DP83840 PHY
2205 * will time out at some point and just tell us what (didn't) happen. For
2206 * complete coverage we only allow so many of the ticks at this level to run,
2207 * when this has expired we print a warning message and try another strategy.
2208 * This "other" strategy is to force the interface into various speed/duplex
2209 * configurations and we stop when we see a link-up condition before the
2210 * maximum number of "peek" ticks have occurred.
2212 * Once a valid link status has been detected we configure the BigMAC and
2213 * the rest of the Happy Meal to speak the most efficient protocol we could
2214 * get a clean link for. The priority for link configurations, highest first
2216 * 100 Base-T Full Duplex
2217 * 100 Base-T Half Duplex
2218 * 10 Base-T Full Duplex
2219 * 10 Base-T Half Duplex
2221 * We start a new timer now, after a successful auto negotiation status has
2222 * been detected. This timer just waits for the link-up bit to get set in
2223 * the BMCR of the DP83840. When this occurs we print a kernel log message
2224 * describing the link type in use and the fact that it is up.
2226 * If a fatal error of some sort is signalled and detected in the interrupt
2227 * service routine, and the chip is reset, or the link is ifconfig'd down
2228 * and then back up, this entire process repeats itself all over again.
2230 /* Note: Above comments are come from sunhme driver. */
2232 static int tc35815_try_next_permutation(struct net_device
*dev
)
2234 struct tc35815_local
*lp
= netdev_priv(dev
);
2235 int pid
= lp
->phy_addr
;
2236 unsigned short bmcr
;
2238 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2240 /* Downgrade from full to half duplex. Only possible via ethtool. */
2241 if (bmcr
& BMCR_FULLDPLX
) {
2242 bmcr
&= ~BMCR_FULLDPLX
;
2243 printk(KERN_DEBUG
"%s: try next permutation (BMCR %x)\n", dev
->name
, bmcr
);
2244 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2248 /* Downgrade from 100 to 10. */
2249 if (bmcr
& BMCR_SPEED100
) {
2250 bmcr
&= ~BMCR_SPEED100
;
2251 printk(KERN_DEBUG
"%s: try next permutation (BMCR %x)\n", dev
->name
, bmcr
);
2252 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2256 /* We've tried everything. */
2261 tc35815_display_link_mode(struct net_device
*dev
)
2263 struct tc35815_local
*lp
= netdev_priv(dev
);
2264 int pid
= lp
->phy_addr
;
2265 unsigned short lpa
, bmcr
;
2266 char *speed
= "", *duplex
= "";
2268 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2269 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2270 if (options
.speed
? (bmcr
& BMCR_SPEED100
) : (lpa
& (LPA_100HALF
| LPA_100FULL
)))
2274 if (options
.duplex
? (bmcr
& BMCR_FULLDPLX
) : (lpa
& (LPA_100FULL
| LPA_10FULL
)))
2275 duplex
= "Full Duplex";
2277 duplex
= "Half Duplex";
2279 if (netif_msg_link(lp
))
2280 printk(KERN_INFO
"%s: Link is up at %s, %s.\n",
2281 dev
->name
, speed
, duplex
);
2282 printk(KERN_DEBUG
"%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2284 bmcr
, tc_mdio_read(dev
, pid
, MII_BMSR
), lpa
);
2287 static void tc35815_display_forced_link_mode(struct net_device
*dev
)
2289 struct tc35815_local
*lp
= netdev_priv(dev
);
2290 int pid
= lp
->phy_addr
;
2291 unsigned short bmcr
;
2292 char *speed
= "", *duplex
= "";
2294 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2295 if (bmcr
& BMCR_SPEED100
)
2299 if (bmcr
& BMCR_FULLDPLX
)
2300 duplex
= "Full Duplex.\n";
2302 duplex
= "Half Duplex.\n";
2304 if (netif_msg_link(lp
))
2305 printk(KERN_INFO
"%s: Link has been forced up at %s, %s",
2306 dev
->name
, speed
, duplex
);
2309 static void tc35815_set_link_modes(struct net_device
*dev
)
2311 struct tc35815_local
*lp
= netdev_priv(dev
);
2312 struct tc35815_regs __iomem
*tr
=
2313 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2314 int pid
= lp
->phy_addr
;
2315 unsigned short bmcr
, lpa
;
2318 if (lp
->timer_state
== arbwait
) {
2319 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2320 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2321 printk(KERN_DEBUG
"%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2323 bmcr
, tc_mdio_read(dev
, pid
, MII_BMSR
), lpa
);
2324 if (!(lpa
& (LPA_10HALF
| LPA_10FULL
|
2325 LPA_100HALF
| LPA_100FULL
))) {
2326 /* fall back to 10HALF */
2327 printk(KERN_INFO
"%s: bad ability %04x - falling back to 10HD.\n",
2331 if (options
.duplex
? (bmcr
& BMCR_FULLDPLX
) : (lpa
& (LPA_100FULL
| LPA_10FULL
)))
2335 if (options
.speed
? (bmcr
& BMCR_SPEED100
) : (lpa
& (LPA_100HALF
| LPA_100FULL
)))
2340 /* Forcing a link mode. */
2341 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2342 if (bmcr
& BMCR_FULLDPLX
)
2346 if (bmcr
& BMCR_SPEED100
)
2352 tc_writel(tc_readl(&tr
->MAC_Ctl
) | MAC_HaltReq
, &tr
->MAC_Ctl
);
2353 if (lp
->fullduplex
) {
2354 tc_writel(tc_readl(&tr
->MAC_Ctl
) | MAC_FullDup
, &tr
->MAC_Ctl
);
2356 tc_writel(tc_readl(&tr
->MAC_Ctl
) & ~MAC_FullDup
, &tr
->MAC_Ctl
);
2358 tc_writel(tc_readl(&tr
->MAC_Ctl
) & ~MAC_HaltReq
, &tr
->MAC_Ctl
);
2360 /* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */
2362 #ifndef NO_CHECK_CARRIER
2363 /* TX4939 does not have EnLCarr */
2364 if (lp
->boardtype
!= TC35815_TX4939
) {
2365 #ifdef WORKAROUND_LOSTCAR
2366 /* WORKAROUND: enable LostCrS only if half duplex operation */
2367 if (!lp
->fullduplex
&& lp
->boardtype
!= TC35815_TX4939
)
2368 tc_writel(tc_readl(&tr
->Tx_Ctl
) | Tx_EnLCarr
, &tr
->Tx_Ctl
);
2372 lp
->mii
.full_duplex
= lp
->fullduplex
;
2375 static void tc35815_timer(unsigned long data
)
2377 struct net_device
*dev
= (struct net_device
*)data
;
2378 struct tc35815_local
*lp
= netdev_priv(dev
);
2379 int pid
= lp
->phy_addr
;
2380 unsigned short bmsr
, bmcr
, lpa
;
2381 int restart_timer
= 0;
2383 spin_lock_irq(&lp
->lock
);
2386 switch (lp
->timer_state
) {
2389 * Only allow for 5 ticks, thats 10 seconds and much too
2390 * long to wait for arbitration to complete.
2392 /* TC35815 need more times... */
2393 if (lp
->timer_ticks
>= 10) {
2394 /* Enter force mode. */
2395 if (!options
.doforce
) {
2396 printk(KERN_NOTICE
"%s: Auto-Negotiation unsuccessful,"
2397 " cable probblem?\n", dev
->name
);
2398 /* Try to restart the adaptor. */
2399 tc35815_restart(dev
);
2402 printk(KERN_NOTICE
"%s: Auto-Negotiation unsuccessful,"
2403 " trying force link mode\n", dev
->name
);
2404 printk(KERN_DEBUG
"%s: BMCR %x BMSR %x\n", dev
->name
,
2405 tc_mdio_read(dev
, pid
, MII_BMCR
),
2406 tc_mdio_read(dev
, pid
, MII_BMSR
));
2407 bmcr
= BMCR_SPEED100
;
2408 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2411 * OK, seems we need do disable the transceiver
2412 * for the first tick to make sure we get an
2413 * accurate link state at the second tick.
2416 lp
->timer_state
= ltrywait
;
2417 lp
->timer_ticks
= 0;
2420 /* Anything interesting happen? */
2421 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2422 if (bmsr
& BMSR_ANEGCOMPLETE
) {
2423 /* Just what we've been waiting for... */
2424 tc35815_set_link_modes(dev
);
2427 * Success, at least so far, advance our state
2430 lp
->timer_state
= lupwait
;
2440 * Auto negotiation was successful and we are awaiting a
2441 * link up status. I have decided to let this timer run
2442 * forever until some sort of error is signalled, reporting
2443 * a message to the user at 10 second intervals.
2445 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2446 if (bmsr
& BMSR_LSTATUS
) {
2448 * Wheee, it's up, display the link mode in use and put
2449 * the timer to sleep.
2451 tc35815_display_link_mode(dev
);
2452 netif_carrier_on(dev
);
2453 #ifdef WORKAROUND_100HALF_PROMISC
2454 /* delayed promiscuous enabling */
2455 if (dev
->flags
& IFF_PROMISC
)
2456 tc35815_set_multicast_list(dev
);
2459 lp
->saved_lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2460 lp
->timer_state
= lcheck
;
2463 lp
->timer_state
= asleep
;
2467 if (lp
->timer_ticks
>= 10) {
2468 printk(KERN_NOTICE
"%s: Auto negotiation successful, link still "
2469 "not completely up.\n", dev
->name
);
2470 lp
->timer_ticks
= 0;
2480 * Making the timeout here too long can make it take
2481 * annoyingly long to attempt all of the link mode
2482 * permutations, but then again this is essentially
2483 * error recovery code for the most part.
2485 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2486 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2487 if (lp
->timer_ticks
== 1) {
2489 * Re-enable transceiver, we'll re-enable the
2490 * transceiver next tick, then check link state
2491 * on the following tick.
2496 if (lp
->timer_ticks
== 2) {
2500 if (bmsr
& BMSR_LSTATUS
) {
2501 /* Force mode selection success. */
2502 tc35815_display_forced_link_mode(dev
);
2503 netif_carrier_on(dev
);
2504 tc35815_set_link_modes(dev
);
2505 #ifdef WORKAROUND_100HALF_PROMISC
2506 /* delayed promiscuous enabling */
2507 if (dev
->flags
& IFF_PROMISC
)
2508 tc35815_set_multicast_list(dev
);
2511 lp
->saved_lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2512 lp
->timer_state
= lcheck
;
2515 lp
->timer_state
= asleep
;
2519 if (lp
->timer_ticks
>= 4) { /* 6 seconds or so... */
2522 ret
= tc35815_try_next_permutation(dev
);
2525 * Aieee, tried them all, reset the
2526 * chip and try all over again.
2528 printk(KERN_NOTICE
"%s: Link down, "
2532 /* Try to restart the adaptor. */
2533 tc35815_restart(dev
);
2536 lp
->timer_ticks
= 0;
2545 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2546 lpa
= tc_mdio_read(dev
, pid
, MII_LPA
);
2547 if (bmcr
& (BMCR_PDOWN
| BMCR_ISOLATE
| BMCR_RESET
)) {
2548 printk(KERN_ERR
"%s: PHY down? (BMCR %x)\n", dev
->name
,
2550 } else if ((lp
->saved_lpa
^ lpa
) &
2551 (LPA_100FULL
|LPA_100HALF
|LPA_10FULL
|LPA_10HALF
)) {
2552 printk(KERN_NOTICE
"%s: link status changed"
2553 " (BMCR %x LPA %x->%x)\n", dev
->name
,
2554 bmcr
, lp
->saved_lpa
, lpa
);
2560 /* Try to restart the adaptor. */
2561 tc35815_restart(dev
);
2566 /* Can't happens.... */
2567 printk(KERN_ERR
"%s: Aieee, link timer is asleep but we got "
2568 "one anyways!\n", dev
->name
);
2570 lp
->timer_ticks
= 0;
2571 lp
->timer_state
= asleep
; /* foo on you */
2575 if (restart_timer
) {
2576 lp
->timer
.expires
= jiffies
+ msecs_to_jiffies(1200);
2577 add_timer(&lp
->timer
);
2580 spin_unlock_irq(&lp
->lock
);
2583 static void tc35815_start_auto_negotiation(struct net_device
*dev
,
2584 struct ethtool_cmd
*ep
)
2586 struct tc35815_local
*lp
= netdev_priv(dev
);
2587 int pid
= lp
->phy_addr
;
2588 unsigned short bmsr
, bmcr
, advertize
;
2591 netif_carrier_off(dev
);
2592 bmsr
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2593 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2594 advertize
= tc_mdio_read(dev
, pid
, MII_ADVERTISE
);
2596 if (ep
== NULL
|| ep
->autoneg
== AUTONEG_ENABLE
) {
2597 if (options
.speed
|| options
.duplex
) {
2598 /* Advertise only specified configuration. */
2599 advertize
&= ~(ADVERTISE_10HALF
|
2603 if (options
.speed
!= 10) {
2604 if (options
.duplex
!= 1)
2605 advertize
|= ADVERTISE_100FULL
;
2606 if (options
.duplex
!= 2)
2607 advertize
|= ADVERTISE_100HALF
;
2609 if (options
.speed
!= 100) {
2610 if (options
.duplex
!= 1)
2611 advertize
|= ADVERTISE_10FULL
;
2612 if (options
.duplex
!= 2)
2613 advertize
|= ADVERTISE_10HALF
;
2615 if (options
.speed
== 100)
2616 bmcr
|= BMCR_SPEED100
;
2617 else if (options
.speed
== 10)
2618 bmcr
&= ~BMCR_SPEED100
;
2619 if (options
.duplex
== 2)
2620 bmcr
|= BMCR_FULLDPLX
;
2621 else if (options
.duplex
== 1)
2622 bmcr
&= ~BMCR_FULLDPLX
;
2624 /* Advertise everything we can support. */
2625 if (bmsr
& BMSR_10HALF
)
2626 advertize
|= ADVERTISE_10HALF
;
2628 advertize
&= ~ADVERTISE_10HALF
;
2629 if (bmsr
& BMSR_10FULL
)
2630 advertize
|= ADVERTISE_10FULL
;
2632 advertize
&= ~ADVERTISE_10FULL
;
2633 if (bmsr
& BMSR_100HALF
)
2634 advertize
|= ADVERTISE_100HALF
;
2636 advertize
&= ~ADVERTISE_100HALF
;
2637 if (bmsr
& BMSR_100FULL
)
2638 advertize
|= ADVERTISE_100FULL
;
2640 advertize
&= ~ADVERTISE_100FULL
;
2643 tc_mdio_write(dev
, pid
, MII_ADVERTISE
, advertize
);
2645 /* Enable Auto-Negotiation, this is usually on already... */
2646 bmcr
|= BMCR_ANENABLE
;
2647 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2649 /* Restart it to make sure it is going. */
2650 bmcr
|= BMCR_ANRESTART
;
2651 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2652 printk(KERN_DEBUG
"%s: ADVERTISE %x BMCR %x\n", dev
->name
, advertize
, bmcr
);
2654 /* BMCR_ANRESTART self clears when the process has begun. */
2655 timeout
= 64; /* More than enough. */
2657 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2658 if (!(bmcr
& BMCR_ANRESTART
))
2659 break; /* got it. */
2663 printk(KERN_ERR
"%s: TC35815 would not start auto "
2664 "negotiation BMCR=0x%04x\n",
2666 printk(KERN_NOTICE
"%s: Performing force link "
2667 "detection.\n", dev
->name
);
2670 printk(KERN_DEBUG
"%s: auto negotiation started.\n", dev
->name
);
2671 lp
->timer_state
= arbwait
;
2675 /* Force the link up, trying first a particular mode.
2676 * Either we are here at the request of ethtool or
2677 * because the Happy Meal would not start to autoneg.
2680 /* Disable auto-negotiation in BMCR, enable the duplex and
2681 * speed setting, init the timer state machine, and fire it off.
2683 if (ep
== NULL
|| ep
->autoneg
== AUTONEG_ENABLE
) {
2684 bmcr
= BMCR_SPEED100
;
2686 if (ep
->speed
== SPEED_100
)
2687 bmcr
= BMCR_SPEED100
;
2690 if (ep
->duplex
== DUPLEX_FULL
)
2691 bmcr
|= BMCR_FULLDPLX
;
2693 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
);
2695 /* OK, seems we need do disable the transceiver for the first
2696 * tick to make sure we get an accurate link state at the
2699 lp
->timer_state
= ltrywait
;
2702 del_timer(&lp
->timer
);
2703 lp
->timer_ticks
= 0;
2704 lp
->timer
.expires
= jiffies
+ msecs_to_jiffies(1200);
2705 add_timer(&lp
->timer
);
2708 static void tc35815_find_phy(struct net_device
*dev
)
2710 struct tc35815_local
*lp
= netdev_priv(dev
);
2711 int pid
= lp
->phy_addr
;
2715 for (pid
= 31; pid
>= 0; pid
--) {
2716 id0
= tc_mdio_read(dev
, pid
, MII_BMSR
);
2717 if (id0
!= 0xffff && id0
!= 0x0000 &&
2718 (id0
& BMSR_RESV
) != (0xffff & BMSR_RESV
) /* paranoia? */
2725 printk(KERN_ERR
"%s: No MII Phy found.\n",
2727 lp
->phy_addr
= pid
= 0;
2730 lp
->mii_id
[0] = tc_mdio_read(dev
, pid
, MII_PHYSID1
);
2731 lp
->mii_id
[1] = tc_mdio_read(dev
, pid
, MII_PHYSID2
);
2732 if (netif_msg_hw(lp
))
2733 printk(KERN_INFO
"%s: PHY(%02x) ID %04x %04x\n", dev
->name
,
2734 pid
, lp
->mii_id
[0], lp
->mii_id
[1]);
2737 static void tc35815_phy_chip_init(struct net_device
*dev
)
2739 struct tc35815_local
*lp
= netdev_priv(dev
);
2740 int pid
= lp
->phy_addr
;
2741 unsigned short bmcr
;
2742 struct ethtool_cmd ecmd
, *ep
;
2744 /* dis-isolate if needed. */
2745 bmcr
= tc_mdio_read(dev
, pid
, MII_BMCR
);
2746 if (bmcr
& BMCR_ISOLATE
) {
2748 printk(KERN_DEBUG
"%s: unisolating...", dev
->name
);
2749 tc_mdio_write(dev
, pid
, MII_BMCR
, bmcr
& ~BMCR_ISOLATE
);
2751 if (!(tc_mdio_read(dev
, pid
, MII_BMCR
) & BMCR_ISOLATE
))
2755 printk(" %s.\n", count
? "done" : "failed");
2758 if (options
.speed
&& options
.duplex
) {
2759 ecmd
.autoneg
= AUTONEG_DISABLE
;
2760 ecmd
.speed
= options
.speed
== 10 ? SPEED_10
: SPEED_100
;
2761 ecmd
.duplex
= options
.duplex
== 1 ? DUPLEX_HALF
: DUPLEX_FULL
;
2766 tc35815_start_auto_negotiation(dev
, ep
);
2769 static void tc35815_chip_reset(struct net_device
*dev
)
2771 struct tc35815_regs __iomem
*tr
=
2772 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2774 /* reset the controller */
2775 tc_writel(MAC_Reset
, &tr
->MAC_Ctl
);
2776 udelay(4); /* 3200ns */
2778 while (tc_readl(&tr
->MAC_Ctl
) & MAC_Reset
) {
2780 printk(KERN_ERR
"%s: MAC reset failed.\n", dev
->name
);
2785 tc_writel(0, &tr
->MAC_Ctl
);
2787 /* initialize registers to default value */
2788 tc_writel(0, &tr
->DMA_Ctl
);
2789 tc_writel(0, &tr
->TxThrsh
);
2790 tc_writel(0, &tr
->TxPollCtr
);
2791 tc_writel(0, &tr
->RxFragSize
);
2792 tc_writel(0, &tr
->Int_En
);
2793 tc_writel(0, &tr
->FDA_Bas
);
2794 tc_writel(0, &tr
->FDA_Lim
);
2795 tc_writel(0xffffffff, &tr
->Int_Src
); /* Write 1 to clear */
2796 tc_writel(0, &tr
->CAM_Ctl
);
2797 tc_writel(0, &tr
->Tx_Ctl
);
2798 tc_writel(0, &tr
->Rx_Ctl
);
2799 tc_writel(0, &tr
->CAM_Ena
);
2800 (void)tc_readl(&tr
->Miss_Cnt
); /* Read to clear */
2802 /* initialize internal SRAM */
2803 tc_writel(DMA_TestMode
, &tr
->DMA_Ctl
);
2804 for (i
= 0; i
< 0x1000; i
+= 4) {
2805 tc_writel(i
, &tr
->CAM_Adr
);
2806 tc_writel(0, &tr
->CAM_Data
);
2808 tc_writel(0, &tr
->DMA_Ctl
);
2811 static void tc35815_chip_init(struct net_device
*dev
)
2813 struct tc35815_local
*lp
= netdev_priv(dev
);
2814 struct tc35815_regs __iomem
*tr
=
2815 (struct tc35815_regs __iomem
*)dev
->base_addr
;
2816 unsigned long txctl
= TX_CTL_CMD
;
2818 tc35815_phy_chip_init(dev
);
2820 /* load station address to CAM */
2821 tc35815_set_cam_entry(dev
, CAM_ENTRY_SOURCE
, dev
->dev_addr
);
2823 /* Enable CAM (broadcast and unicast) */
2824 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE
), &tr
->CAM_Ena
);
2825 tc_writel(CAM_CompEn
| CAM_BroadAcc
, &tr
->CAM_Ctl
);
2827 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2828 if (HAVE_DMA_RXALIGN(lp
))
2829 tc_writel(DMA_BURST_SIZE
| DMA_RxAlign_2
, &tr
->DMA_Ctl
);
2831 tc_writel(DMA_BURST_SIZE
, &tr
->DMA_Ctl
);
2832 #ifdef TC35815_USE_PACKEDBUFFER
2833 tc_writel(RxFrag_EnPack
| ETH_ZLEN
, &tr
->RxFragSize
); /* Packing */
2835 tc_writel(ETH_ZLEN
, &tr
->RxFragSize
);
2837 tc_writel(0, &tr
->TxPollCtr
); /* Batch mode */
2838 tc_writel(TX_THRESHOLD
, &tr
->TxThrsh
);
2839 tc_writel(INT_EN_CMD
, &tr
->Int_En
);
2842 tc_writel(fd_virt_to_bus(lp
, lp
->rfd_base
), &tr
->FDA_Bas
);
2843 tc_writel((unsigned long)lp
->rfd_limit
- (unsigned long)lp
->rfd_base
,
2846 * Activation method:
2847 * First, enable the MAC Transmitter and the DMA Receive circuits.
2848 * Then enable the DMA Transmitter and the MAC Receive circuits.
2850 tc_writel(fd_virt_to_bus(lp
, lp
->fbl_ptr
), &tr
->BLFrmPtr
); /* start DMA receiver */
2851 tc_writel(RX_CTL_CMD
, &tr
->Rx_Ctl
); /* start MAC receiver */
2853 /* start MAC transmitter */
2854 #ifndef NO_CHECK_CARRIER
2855 /* TX4939 does not have EnLCarr */
2856 if (lp
->boardtype
== TC35815_TX4939
)
2857 txctl
&= ~Tx_EnLCarr
;
2858 #ifdef WORKAROUND_LOSTCAR
2859 /* WORKAROUND: ignore LostCrS in full duplex operation */
2860 if ((lp
->timer_state
!= asleep
&& lp
->timer_state
!= lcheck
) ||
2862 txctl
&= ~Tx_EnLCarr
;
2864 #endif /* !NO_CHECK_CARRIER */
2866 txctl
&= ~Tx_EnComp
; /* disable global tx completion int. */
2868 tc_writel(txctl
, &tr
->Tx_Ctl
);
2872 static int tc35815_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2874 struct net_device
*dev
= pci_get_drvdata(pdev
);
2875 struct tc35815_local
*lp
= netdev_priv(dev
);
2876 unsigned long flags
;
2878 pci_save_state(pdev
);
2879 if (!netif_running(dev
))
2881 netif_device_detach(dev
);
2882 spin_lock_irqsave(&lp
->lock
, flags
);
2883 del_timer(&lp
->timer
); /* Kill if running */
2884 tc35815_chip_reset(dev
);
2885 spin_unlock_irqrestore(&lp
->lock
, flags
);
2886 pci_set_power_state(pdev
, PCI_D3hot
);
2890 static int tc35815_resume(struct pci_dev
*pdev
)
2892 struct net_device
*dev
= pci_get_drvdata(pdev
);
2893 struct tc35815_local
*lp
= netdev_priv(dev
);
2894 unsigned long flags
;
2896 pci_restore_state(pdev
);
2897 if (!netif_running(dev
))
2899 pci_set_power_state(pdev
, PCI_D0
);
2900 spin_lock_irqsave(&lp
->lock
, flags
);
2901 tc35815_restart(dev
);
2902 spin_unlock_irqrestore(&lp
->lock
, flags
);
2903 netif_device_attach(dev
);
2906 #endif /* CONFIG_PM */
2908 static struct pci_driver tc35815_pci_driver
= {
2910 .id_table
= tc35815_pci_tbl
,
2911 .probe
= tc35815_init_one
,
2912 .remove
= __devexit_p(tc35815_remove_one
),
2914 .suspend
= tc35815_suspend
,
2915 .resume
= tc35815_resume
,
2919 module_param_named(speed
, options
.speed
, int, 0);
2920 MODULE_PARM_DESC(speed
, "0:auto, 10:10Mbps, 100:100Mbps");
2921 module_param_named(duplex
, options
.duplex
, int, 0);
2922 MODULE_PARM_DESC(duplex
, "0:auto, 1:half, 2:full");
2923 module_param_named(doforce
, options
.doforce
, int, 0);
2924 MODULE_PARM_DESC(doforce
, "try force link mode if auto-negotiation failed");
2926 static int __init
tc35815_init_module(void)
2928 return pci_register_driver(&tc35815_pci_driver
);
2931 static void __exit
tc35815_cleanup_module(void)
2933 pci_unregister_driver(&tc35815_pci_driver
);
2936 module_init(tc35815_init_module
);
2937 module_exit(tc35815_cleanup_module
);
2939 MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2940 MODULE_LICENSE("GPL");