blob: d887c05588d5c4504d31699fef3d452645cb1daa [file] [log] [blame]
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001/*
2 * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * Based on skelton.c by Donald Becker.
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09006 * This driver is a replacement of older and less maintained version.
7 * This is a header of the older version:
8 * -----<snip>-----
9 * Copyright 2001 MontaVista Software Inc.
10 * Author: MontaVista Software, Inc.
11 * ahennessy@mvista.com
12 * Copyright (C) 2000-2001 Toshiba Corporation
13 * static const char *version =
14 * "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n";
15 * -----<snip>-----
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 *
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090017 * This file is subject to the terms and conditions of the GNU General Public
18 * License. See the file "COPYING" in the main directory of this archive
19 * for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 *
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090021 * (C) Copyright TOSHIBA CORPORATION 2004-2005
22 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 */
24
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090025#ifdef TC35815_NAPI
Atsushi Nemotobd43da82007-06-29 22:34:53 +090026#define DRV_VERSION "1.36-NAPI"
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090027#else
Atsushi Nemotobd43da82007-06-29 22:34:53 +090028#define DRV_VERSION "1.36"
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090029#endif
30static const char *version = "tc35815.c:v" DRV_VERSION "\n";
31#define MODNAME "tc35815"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33#include <linux/module.h>
34#include <linux/kernel.h>
35#include <linux/types.h>
36#include <linux/fcntl.h>
37#include <linux/interrupt.h>
38#include <linux/ioport.h>
39#include <linux/in.h>
40#include <linux/slab.h>
41#include <linux/string.h>
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090042#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#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>
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090050#include <linux/mii.h>
51#include <linux/ethtool.h>
Atsushi Nemotobd43da82007-06-29 22:34:53 +090052#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#include <asm/byteorder.h>
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056/* First, a few definitions that the brave might change. */
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#define GATHER_TXINT /* On-Demand Tx Interrupt */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090059#define WORKAROUND_LOSTCAR
60#define WORKAROUND_100HALF_PROMISC
61/* #define TC35815_USE_PACKEDBUFFER */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090063typedef enum {
64 TC35815CF = 0,
65 TC35815_NWU,
66 TC35815_TX4939,
67} board_t;
68
69/* indexed by board_t, above */
70static const struct {
71 const char *name;
72} board_info[] __devinitdata = {
73 { "TOSHIBA TC35815CF 10/100BaseTX" },
74 { "TOSHIBA TC35815 with Wake on LAN" },
75 { "TOSHIBA TC35815/TX4939" },
76};
77
78static const struct pci_device_id tc35815_pci_tbl[] = {
79 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF },
80 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU },
81 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 },
82 {0,}
83};
84MODULE_DEVICE_TABLE (pci, tc35815_pci_tbl);
85
86/* see MODULE_PARM_DESC */
87static struct tc35815_options {
88 int speed;
89 int duplex;
90 int doforce;
91} options;
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93/*
94 * Registers
95 */
96struct tc35815_regs {
97 volatile __u32 DMA_Ctl; /* 0x00 */
98 volatile __u32 TxFrmPtr;
99 volatile __u32 TxThrsh;
100 volatile __u32 TxPollCtr;
101 volatile __u32 BLFrmPtr;
102 volatile __u32 RxFragSize;
103 volatile __u32 Int_En;
104 volatile __u32 FDA_Bas;
105 volatile __u32 FDA_Lim; /* 0x20 */
106 volatile __u32 Int_Src;
107 volatile __u32 unused0[2];
108 volatile __u32 PauseCnt;
109 volatile __u32 RemPauCnt;
110 volatile __u32 TxCtlFrmStat;
111 volatile __u32 unused1;
112 volatile __u32 MAC_Ctl; /* 0x40 */
113 volatile __u32 CAM_Ctl;
114 volatile __u32 Tx_Ctl;
115 volatile __u32 Tx_Stat;
116 volatile __u32 Rx_Ctl;
117 volatile __u32 Rx_Stat;
118 volatile __u32 MD_Data;
119 volatile __u32 MD_CA;
120 volatile __u32 CAM_Adr; /* 0x60 */
121 volatile __u32 CAM_Data;
122 volatile __u32 CAM_Ena;
123 volatile __u32 PROM_Ctl;
124 volatile __u32 PROM_Data;
125 volatile __u32 Algn_Cnt;
126 volatile __u32 CRC_Cnt;
127 volatile __u32 Miss_Cnt;
128};
129
130/*
131 * Bit assignments
132 */
133/* DMA_Ctl bit asign ------------------------------------------------------- */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900134#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#define DMA_IntMask 0x00040000 /* 1:Interupt mask */
140#define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
141#define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
142#define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
143#define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
144#define DMA_TestMode 0x00002000 /* 1:Test Mode */
145#define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
146#define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
147
148/* RxFragSize bit asign ---------------------------------------------------- */
149#define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
150#define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
151
152/* MAC_Ctl bit asign ------------------------------------------------------- */
153#define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */
154#define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */
155#define MAC_MissRoll 0x00000400 /* 1:Missed Roll */
156#define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */
157#define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */
158#define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/
159#define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */
160#define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */
161#define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */
162#define MAC_Reset 0x00000004 /* 1:Software Reset */
163#define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */
164#define MAC_HaltReq 0x00000001 /* 1:Halt request */
165
166/* PROM_Ctl bit asign ------------------------------------------------------ */
167#define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */
168#define PROM_Read 0x00004000 /*10:Read operation */
169#define PROM_Write 0x00002000 /*01:Write operation */
170#define PROM_Erase 0x00006000 /*11:Erase operation */
171 /*00:Enable or Disable Writting, */
172 /* as specified in PROM_Addr. */
173#define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */
174 /*00xxxx: disable */
175
176/* CAM_Ctl bit asign ------------------------------------------------------- */
177#define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */
178#define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/
179 /* accept other */
180#define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */
181#define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */
182#define CAM_StationAcc 0x00000001 /* 1:unicast accept */
183
184/* CAM_Ena bit asign ------------------------------------------------------- */
185#define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
186#define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
187#define CAM_Ena_Bit(index) (1<<(index))
188#define CAM_ENTRY_DESTINATION 0
189#define CAM_ENTRY_SOURCE 1
190#define CAM_ENTRY_MACCTL 20
191
192/* Tx_Ctl bit asign -------------------------------------------------------- */
193#define Tx_En 0x00000001 /* 1:Transmit enable */
194#define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */
195#define Tx_NoPad 0x00000004 /* 1:Suppress Padding */
196#define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */
197#define Tx_FBack 0x00000010 /* 1:Fast Back-off */
198#define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */
199#define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */
200#define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */
201#define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */
202#define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */
203#define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */
204#define Tx_EnComp 0x00004000 /* 1:Enable Completion */
205
206/* Tx_Stat bit asign ------------------------------------------------------- */
207#define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */
208#define Tx_ExColl 0x00000010 /* Excessive Collision */
209#define Tx_TXDefer 0x00000020 /* Transmit Defered */
210#define Tx_Paused 0x00000040 /* Transmit Paused */
211#define Tx_IntTx 0x00000080 /* Interrupt on Tx */
212#define Tx_Under 0x00000100 /* Underrun */
213#define Tx_Defer 0x00000200 /* Deferral */
214#define Tx_NCarr 0x00000400 /* No Carrier */
215#define Tx_10Stat 0x00000800 /* 10Mbps Status */
216#define Tx_LateColl 0x00001000 /* Late Collision */
217#define Tx_TxPar 0x00002000 /* Tx Parity Error */
218#define Tx_Comp 0x00004000 /* Completion */
219#define Tx_Halted 0x00008000 /* Tx Halted */
220#define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */
221
222/* Rx_Ctl bit asign -------------------------------------------------------- */
223#define Rx_EnGood 0x00004000 /* 1:Enable Good */
224#define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */
225#define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */
226#define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */
227#define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */
228#define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */
229#define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */
230#define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */
231#define Rx_ShortEn 0x00000008 /* 1:Short Enable */
232#define Rx_LongEn 0x00000004 /* 1:Long Enable */
233#define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */
234#define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */
235
236/* Rx_Stat bit asign ------------------------------------------------------- */
237#define Rx_Halted 0x00008000 /* Rx Halted */
238#define Rx_Good 0x00004000 /* Rx Good */
239#define Rx_RxPar 0x00002000 /* Rx Parity Error */
240 /* 0x00001000 not use */
241#define Rx_LongErr 0x00000800 /* Rx Long Error */
242#define Rx_Over 0x00000400 /* Rx Overflow */
243#define Rx_CRCErr 0x00000200 /* Rx CRC Error */
244#define Rx_Align 0x00000100 /* Rx Alignment Error */
245#define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */
246#define Rx_IntRx 0x00000040 /* Rx Interrupt */
247#define Rx_CtlRecd 0x00000020 /* Rx Control Receive */
248
249#define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */
250
251/* Int_En bit asign -------------------------------------------------------- */
252#define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
253#define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */
254#define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
255#define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
256#define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
257#define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
258#define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
259#define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
260#define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
261#define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
262#define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
263#define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
264 /* Exhausted Enable */
265
266/* Int_Src bit asign ------------------------------------------------------- */
267#define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
268#define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
269#define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
270#define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
271#define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
272#define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
273#define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
274#define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
275#define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
276#define Int_SWInt 0x00000020 /* 1:Software request & Clear */
277#define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
278#define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
279#define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
280#define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
281#define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
282
283/* MD_CA bit asign --------------------------------------------------------- */
284#define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
285#define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
286#define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
287
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289/*
290 * Descriptors
291 */
292
293/* Frame descripter */
294struct FDesc {
295 volatile __u32 FDNext;
296 volatile __u32 FDSystem;
297 volatile __u32 FDStat;
298 volatile __u32 FDCtl;
299};
300
301/* Buffer descripter */
302struct BDesc {
303 volatile __u32 BuffData;
304 volatile __u32 BDCtl;
305};
306
307#define FD_ALIGN 16
308
309/* Frame Descripter bit asign ---------------------------------------------- */
310#define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
311#define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
312#define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
313#define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
314#define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
315#define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
316#define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
317#define FD_FrmOpt_Packing 0x04000000 /* Rx only */
318#define FD_CownsFD 0x80000000 /* FD Controller owner bit */
319#define FD_Next_EOL 0x00000001 /* FD EOL indicator */
320#define FD_BDCnt_SHIFT 16
321
322/* Buffer Descripter bit asign --------------------------------------------- */
323#define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
324#define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
325#define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
326#define BD_CownsBD 0x80000000 /* BD Controller owner bit */
327#define BD_RxBDID_SHIFT 16
328#define BD_RxBDSeqN_SHIFT 24
329
330
331/* Some useful constants. */
332#undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
333
334#ifdef NO_CHECK_CARRIER
335#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900336 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
337 Tx_En) /* maybe 0x7b01 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338#else
339#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900340 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
341 Tx_En) /* maybe 0x7b01 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342#endif
343#define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
344 | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345#define INT_EN_CMD (Int_NRAbtEn | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900346 Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
348 Int_STargAbtEn | \
349 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900350#define DMA_CTL_CMD DMA_BURST_SIZE
351#define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353/* Tuning parameters */
354#define DMA_BURST_SIZE 32
355#define TX_THRESHOLD 1024
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900356#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. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900359/* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
360#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361#define FD_PAGE_NUM 2
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900362#define RX_BUF_NUM 8 /* >= 2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363#define RX_FD_NUM 250 /* >= 32 */
364#define TX_FD_NUM 128
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900365#define RX_BUF_SIZE PAGE_SIZE
366#else /* TC35815_USE_PACKEDBUFFER */
367#define FD_PAGE_NUM 4
368#define RX_BUF_NUM 128 /* < 256 */
369#define RX_FD_NUM 256 /* >= 32 */
370#define TX_FD_NUM 128
371#if RX_CTL_CMD & Rx_LongEn
372#define RX_BUF_SIZE PAGE_SIZE
373#elif RX_CTL_CMD & Rx_StripCRC
374#define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 4 + 2, 32) /* +2: reserve */
375#else
376#define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 2, 32) /* +2: reserve */
377#endif
378#endif /* TC35815_USE_PACKEDBUFFER */
379#define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */
380#define NAPI_WEIGHT 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382struct TxFD {
383 struct FDesc fd;
384 struct BDesc bd;
385 struct BDesc unused;
386};
387
388struct RxFD {
389 struct FDesc fd;
390 struct BDesc bd[0]; /* variable length */
391};
392
393struct FrFD {
394 struct FDesc fd;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900395 struct BDesc bd[RX_BUF_NUM];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396};
397
398
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900399#define tc_readl(addr) readl(addr)
400#define tc_writel(d, addr) writel(d, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900402#define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
403
404/* Timer state engine. */
405enum tc35815_timer_state {
406 arbwait = 0, /* Waiting for auto negotiation to complete. */
407 lupwait = 1, /* Auto-neg complete, awaiting link-up status. */
408 ltrywait = 2, /* Forcing try of all modes, from fastest to slowest. */
409 asleep = 3, /* Time inactive. */
410 lcheck = 4, /* Check link status. */
411};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
413/* Information that need to be kept for each board. */
414struct tc35815_local {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900415 struct pci_dev *pci_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700417 struct net_device *dev;
418 struct napi_struct napi;
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 /* statistics */
421 struct net_device_stats stats;
422 struct {
423 int max_tx_qlen;
424 int tx_ints;
425 int rx_ints;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900426 int tx_underrun;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 } lstats;
428
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900429 /* Tx control lock. This protects the transmit buffer ring
430 * state along with the "tx full" state of the driver. This
431 * means all netif_queue flow control actions are protected
432 * by this lock as well.
433 */
434 spinlock_t lock;
435
436 int phy_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 int fullduplex;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900438 unsigned short saved_lpa;
439 struct timer_list timer;
440 enum tc35815_timer_state timer_state; /* State of auto-neg timer. */
441 unsigned int timer_ticks; /* Number of clicks at each state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
443 /*
444 * Transmitting: Batch Mode.
445 * 1 BD in 1 TxFD.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900446 * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 * 1 circular FD for Free Buffer List.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900448 * RX_BUF_NUM BD in Free Buffer FD.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 * One Free Buffer BD has PAGE_SIZE data buffer.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900450 * Or Non-Packing Mode.
451 * 1 circular FD for Free Buffer List.
452 * RX_BUF_NUM BD in Free Buffer FD.
453 * One Free Buffer BD has ETH_FRAME_LEN data buffer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900455 void * fd_buf; /* for TxFD, RxFD, FrFD */
456 dma_addr_t fd_buf_dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 struct TxFD *tfd_base;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900458 unsigned int tfd_start;
459 unsigned int tfd_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 struct RxFD *rfd_base;
461 struct RxFD *rfd_limit;
462 struct RxFD *rfd_cur;
463 struct FrFD *fbl_ptr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900464#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 unsigned char fbl_curid;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900466 void * data_buf[RX_BUF_NUM]; /* packing */
467 dma_addr_t data_buf_dma[RX_BUF_NUM];
468 struct {
469 struct sk_buff *skb;
470 dma_addr_t skb_dma;
471 } tx_skbs[TX_FD_NUM];
472#else
473 unsigned int fbl_count;
474 struct {
475 struct sk_buff *skb;
476 dma_addr_t skb_dma;
477 } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM];
478#endif
479 struct mii_if_info mii;
480 unsigned short mii_id[2];
481 u32 msg_enable;
482 board_t boardtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483};
484
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900485static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt)
486{
487 return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf);
488}
489#ifdef DEBUG
490static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
491{
492 return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma));
493}
494#endif
495#ifdef TC35815_USE_PACKEDBUFFER
496static inline void *rxbuf_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
497{
498 int i;
499 for (i = 0; i < RX_BUF_NUM; i++) {
500 if (bus >= lp->data_buf_dma[i] &&
501 bus < lp->data_buf_dma[i] + PAGE_SIZE)
502 return (void *)((u8 *)lp->data_buf[i] +
503 (bus - lp->data_buf_dma[i]));
504 }
505 return NULL;
506}
507
508#define TC35815_DMA_SYNC_ONDEMAND
509static void* alloc_rxbuf_page(struct pci_dev *hwdev, dma_addr_t *dma_handle)
510{
511#ifdef TC35815_DMA_SYNC_ONDEMAND
512 void *buf;
513 /* pci_map + pci_dma_sync will be more effective than
514 * pci_alloc_consistent on some archs. */
515 if ((buf = (void *)__get_free_page(GFP_ATOMIC)) == NULL)
516 return NULL;
517 *dma_handle = pci_map_single(hwdev, buf, PAGE_SIZE,
518 PCI_DMA_FROMDEVICE);
519 if (pci_dma_mapping_error(*dma_handle)) {
520 free_page((unsigned long)buf);
521 return NULL;
522 }
523 return buf;
524#else
525 return pci_alloc_consistent(hwdev, PAGE_SIZE, dma_handle);
526#endif
527}
528
529static void free_rxbuf_page(struct pci_dev *hwdev, void *buf, dma_addr_t dma_handle)
530{
531#ifdef TC35815_DMA_SYNC_ONDEMAND
532 pci_unmap_single(hwdev, dma_handle, PAGE_SIZE, PCI_DMA_FROMDEVICE);
533 free_page((unsigned long)buf);
534#else
535 pci_free_consistent(hwdev, PAGE_SIZE, buf, dma_handle);
536#endif
537}
538#else /* TC35815_USE_PACKEDBUFFER */
539static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev,
540 struct pci_dev *hwdev,
541 dma_addr_t *dma_handle)
542{
543 struct sk_buff *skb;
544 skb = dev_alloc_skb(RX_BUF_SIZE);
545 if (!skb)
546 return NULL;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900547 *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE,
548 PCI_DMA_FROMDEVICE);
549 if (pci_dma_mapping_error(*dma_handle)) {
550 dev_kfree_skb_any(skb);
551 return NULL;
552 }
553 skb_reserve(skb, 2); /* make IP header 4byte aligned */
554 return skb;
555}
556
557static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle)
558{
559 pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE,
560 PCI_DMA_FROMDEVICE);
561 dev_kfree_skb_any(skb);
562}
563#endif /* TC35815_USE_PACKEDBUFFER */
564
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565/* Index to functions, as function prototypes. */
566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567static int tc35815_open(struct net_device *dev);
568static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900569static irqreturn_t tc35815_interrupt(int irq, void *dev_id);
570#ifdef TC35815_NAPI
571static int tc35815_rx(struct net_device *dev, int limit);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700572static int tc35815_poll(struct napi_struct *napi, int budget);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900573#else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574static void tc35815_rx(struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900575#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576static void tc35815_txdone(struct net_device *dev);
577static int tc35815_close(struct net_device *dev);
578static struct net_device_stats *tc35815_get_stats(struct net_device *dev);
579static void tc35815_set_multicast_list(struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900580static void tc35815_tx_timeout(struct net_device *dev);
581static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
582#ifdef CONFIG_NET_POLL_CONTROLLER
583static void tc35815_poll_controller(struct net_device *dev);
584#endif
585static const struct ethtool_ops tc35815_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900587/* Example routines you must write ;->. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588static void tc35815_chip_reset(struct net_device *dev);
589static void tc35815_chip_init(struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900590static void tc35815_find_phy(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591static void tc35815_phy_chip_init(struct net_device *dev);
592
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900593#ifdef DEBUG
594static void panic_queues(struct net_device *dev);
595#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900597static void tc35815_timer(unsigned long data);
598static void tc35815_start_auto_negotiation(struct net_device *dev,
599 struct ethtool_cmd *ep);
600static int tc_mdio_read(struct net_device *dev, int phy_id, int location);
601static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
602 int val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900604#ifdef CONFIG_CPU_TX49XX
605/*
606 * Find a platform_device providing a MAC address. The platform code
607 * should provide a "tc35815-mac" device with a MAC address in its
608 * platform_data.
609 */
610static int __devinit tc35815_mac_match(struct device *dev, void *data)
611{
612 struct platform_device *plat_dev = to_platform_device(dev);
613 struct pci_dev *pci_dev = data;
614 unsigned int id = (pci_dev->bus->number << 8) | pci_dev->devfn;
615 return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
616}
617
618static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
619{
620 struct tc35815_local *lp = dev->priv;
621 struct device *pd = bus_find_device(&platform_bus_type, NULL,
622 lp->pci_dev, tc35815_mac_match);
623 if (pd) {
624 if (pd->platform_data)
625 memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN);
626 put_device(pd);
627 return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV;
628 }
629 return -ENODEV;
630}
631#else
Yoichi Yuasa308a9062007-07-18 11:13:42 +0900632static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900633{
634 return -ENODEV;
635}
636#endif
637
638static int __devinit tc35815_init_dev_addr (struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900640 struct tc35815_regs __iomem *tr =
641 (struct tc35815_regs __iomem *)dev->base_addr;
642 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
645 ;
646 for (i = 0; i < 6; i += 2) {
647 unsigned short data;
648 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl);
649 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
650 ;
651 data = tc_readl(&tr->PROM_Data);
652 dev->dev_addr[i] = data & 0xff;
653 dev->dev_addr[i+1] = data >> 8;
654 }
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900655 if (!is_valid_ether_addr(dev->dev_addr))
656 return tc35815_read_plat_dev_addr(dev);
657 return 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900658}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900660static int __devinit tc35815_init_one (struct pci_dev *pdev,
661 const struct pci_device_id *ent)
662{
663 void __iomem *ioaddr = NULL;
664 struct net_device *dev;
665 struct tc35815_local *lp;
666 int rc;
667 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900669 static int printed_version;
670 if (!printed_version++) {
671 printk(version);
672 dev_printk(KERN_DEBUG, &pdev->dev,
673 "speed:%d duplex:%d doforce:%d\n",
674 options.speed, options.duplex, options.doforce);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900677 if (!pdev->irq) {
678 dev_warn(&pdev->dev, "no IRQ assigned.\n");
679 return -ENODEV;
680 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900682 /* dev zeroed in alloc_etherdev */
683 dev = alloc_etherdev (sizeof (*lp));
684 if (dev == NULL) {
685 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
686 return -ENOMEM;
687 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 SET_NETDEV_DEV(dev, &pdev->dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900689 lp = dev->priv;
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700690 lp->dev = dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900692 /* enable device (incl. PCI PM wakeup), and bus-mastering */
693 rc = pci_enable_device (pdev);
694 if (rc)
695 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900697 mmio_start = pci_resource_start (pdev, 1);
698 mmio_end = pci_resource_end (pdev, 1);
699 mmio_flags = pci_resource_flags (pdev, 1);
700 mmio_len = pci_resource_len (pdev, 1);
701
702 /* set this immediately, we need to know before
703 * we talk to the chip directly */
704
705 /* make sure PCI base addr 1 is MMIO */
706 if (!(mmio_flags & IORESOURCE_MEM)) {
707 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
708 rc = -ENODEV;
709 goto err_out;
710 }
711
712 /* check for weird/broken PCI region reporting */
713 if ((mmio_len < sizeof(struct tc35815_regs))) {
714 dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n");
715 rc = -ENODEV;
716 goto err_out;
717 }
718
719 rc = pci_request_regions (pdev, MODNAME);
720 if (rc)
721 goto err_out;
722
723 pci_set_master (pdev);
724
725 /* ioremap MMIO region */
726 ioaddr = ioremap (mmio_start, mmio_len);
727 if (ioaddr == NULL) {
728 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
729 rc = -EIO;
730 goto err_out_free_res;
731 }
732
733 /* Initialize the device structure. */
734 dev->open = tc35815_open;
735 dev->hard_start_xmit = tc35815_send_packet;
736 dev->stop = tc35815_close;
737 dev->get_stats = tc35815_get_stats;
738 dev->set_multicast_list = tc35815_set_multicast_list;
739 dev->do_ioctl = tc35815_ioctl;
740 dev->ethtool_ops = &tc35815_ethtool_ops;
741 dev->tx_timeout = tc35815_tx_timeout;
742 dev->watchdog_timeo = TC35815_TX_TIMEOUT;
743#ifdef TC35815_NAPI
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700744 netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900745#endif
746#ifdef CONFIG_NET_POLL_CONTROLLER
747 dev->poll_controller = tc35815_poll_controller;
748#endif
749
750 dev->irq = pdev->irq;
751 dev->base_addr = (unsigned long) ioaddr;
752
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900753 spin_lock_init(&lp->lock);
754 lp->pci_dev = pdev;
755 lp->boardtype = ent->driver_data;
756
757 lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK;
758 pci_set_drvdata(pdev, dev);
759
760 /* Soft reset the chip. */
761 tc35815_chip_reset(dev);
762
763 /* Retrieve the ethernet address. */
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900764 if (tc35815_init_dev_addr(dev)) {
765 dev_warn(&pdev->dev, "not valid ether addr\n");
766 random_ether_addr(dev->dev_addr);
767 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900768
769 rc = register_netdev (dev);
770 if (rc)
771 goto err_out_unmap;
772
773 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
774 printk(KERN_INFO "%s: %s at 0x%lx, "
775 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
776 "IRQ %d\n",
777 dev->name,
778 board_info[ent->driver_data].name,
779 dev->base_addr,
780 dev->dev_addr[0], dev->dev_addr[1],
781 dev->dev_addr[2], dev->dev_addr[3],
782 dev->dev_addr[4], dev->dev_addr[5],
783 dev->irq);
784
785 setup_timer(&lp->timer, tc35815_timer, (unsigned long) dev);
786 lp->mii.dev = dev;
787 lp->mii.mdio_read = tc_mdio_read;
788 lp->mii.mdio_write = tc_mdio_write;
789 lp->mii.phy_id_mask = 0x1f;
790 lp->mii.reg_num_mask = 0x1f;
791 tc35815_find_phy(dev);
792 lp->mii.phy_id = lp->phy_addr;
793 lp->mii.full_duplex = 0;
794 lp->mii.force_media = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795
796 return 0;
797
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900798err_out_unmap:
799 iounmap(ioaddr);
800err_out_free_res:
801 pci_release_regions (pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802err_out:
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900803 free_netdev (dev);
804 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805}
806
807
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900808static void __devexit tc35815_remove_one (struct pci_dev *pdev)
809{
810 struct net_device *dev = pci_get_drvdata (pdev);
811 unsigned long mmio_addr;
812
813 mmio_addr = dev->base_addr;
814
815 unregister_netdev (dev);
816
817 if (mmio_addr) {
818 iounmap ((void __iomem *)mmio_addr);
819 pci_release_regions (pdev);
820 }
821
822 free_netdev (dev);
823
824 pci_set_drvdata (pdev, NULL);
825}
826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827static int
828tc35815_init_queues(struct net_device *dev)
829{
830 struct tc35815_local *lp = dev->priv;
831 int i;
832 unsigned long fd_addr;
833
834 if (!lp->fd_buf) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900835 BUG_ON(sizeof(struct FDesc) +
836 sizeof(struct BDesc) * RX_BUF_NUM +
837 sizeof(struct FDesc) * RX_FD_NUM +
838 sizeof(struct TxFD) * TX_FD_NUM >
839 PAGE_SIZE * FD_PAGE_NUM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900841 if ((lp->fd_buf = pci_alloc_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, &lp->fd_buf_dma)) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842 return -ENOMEM;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900843 for (i = 0; i < RX_BUF_NUM; i++) {
844#ifdef TC35815_USE_PACKEDBUFFER
845 if ((lp->data_buf[i] = alloc_rxbuf_page(lp->pci_dev, &lp->data_buf_dma[i])) == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 while (--i >= 0) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900847 free_rxbuf_page(lp->pci_dev,
848 lp->data_buf[i],
849 lp->data_buf_dma[i]);
850 lp->data_buf[i] = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900852 pci_free_consistent(lp->pci_dev,
853 PAGE_SIZE * FD_PAGE_NUM,
854 lp->fd_buf,
855 lp->fd_buf_dma);
856 lp->fd_buf = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 return -ENOMEM;
858 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900859#else
860 lp->rx_skbs[i].skb =
861 alloc_rxbuf_skb(dev, lp->pci_dev,
862 &lp->rx_skbs[i].skb_dma);
863 if (!lp->rx_skbs[i].skb) {
864 while (--i >= 0) {
865 free_rxbuf_skb(lp->pci_dev,
866 lp->rx_skbs[i].skb,
867 lp->rx_skbs[i].skb_dma);
868 lp->rx_skbs[i].skb = NULL;
869 }
870 pci_free_consistent(lp->pci_dev,
871 PAGE_SIZE * FD_PAGE_NUM,
872 lp->fd_buf,
873 lp->fd_buf_dma);
874 lp->fd_buf = NULL;
875 return -ENOMEM;
876 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877#endif
878 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900879 printk(KERN_DEBUG "%s: FD buf %p DataBuf",
880 dev->name, lp->fd_buf);
881#ifdef TC35815_USE_PACKEDBUFFER
882 printk(" DataBuf");
883 for (i = 0; i < RX_BUF_NUM; i++)
884 printk(" %p", lp->data_buf[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900886 printk("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 } else {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900888 for (i = 0; i < FD_PAGE_NUM; i++) {
889 clear_page((void *)((unsigned long)lp->fd_buf + i * PAGE_SIZE));
890 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 fd_addr = (unsigned long)lp->fd_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
894 /* Free Descriptors (for Receive) */
895 lp->rfd_base = (struct RxFD *)fd_addr;
896 fd_addr += sizeof(struct RxFD) * RX_FD_NUM;
897 for (i = 0; i < RX_FD_NUM; i++) {
898 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD);
899 }
900 lp->rfd_cur = lp->rfd_base;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900901 lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
903 /* Transmit Descriptors */
904 lp->tfd_base = (struct TxFD *)fd_addr;
905 fd_addr += sizeof(struct TxFD) * TX_FD_NUM;
906 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900907 lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1]));
908 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0);
910 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900911 lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 lp->tfd_start = 0;
913 lp->tfd_end = 0;
914
915 /* Buffer List (for Receive) */
916 lp->fbl_ptr = (struct FrFD *)fd_addr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900917 lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr));
918 lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD);
919#ifndef TC35815_USE_PACKEDBUFFER
920 /*
921 * move all allocated skbs to head of rx_skbs[] array.
922 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
923 * tc35815_rx() had failed.
924 */
925 lp->fbl_count = 0;
926 for (i = 0; i < RX_BUF_NUM; i++) {
927 if (lp->rx_skbs[i].skb) {
928 if (i != lp->fbl_count) {
929 lp->rx_skbs[lp->fbl_count].skb =
930 lp->rx_skbs[i].skb;
931 lp->rx_skbs[lp->fbl_count].skb_dma =
932 lp->rx_skbs[i].skb_dma;
933 }
934 lp->fbl_count++;
935 }
936 }
937#endif
938 for (i = 0; i < RX_BUF_NUM; i++) {
939#ifdef TC35815_USE_PACKEDBUFFER
940 lp->fbl_ptr->bd[i].BuffData = cpu_to_le32(lp->data_buf_dma[i]);
941#else
942 if (i >= lp->fbl_count) {
943 lp->fbl_ptr->bd[i].BuffData = 0;
944 lp->fbl_ptr->bd[i].BDCtl = 0;
945 continue;
946 }
947 lp->fbl_ptr->bd[i].BuffData =
948 cpu_to_le32(lp->rx_skbs[i].skb_dma);
949#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950 /* BDID is index of FrFD.bd[] */
951 lp->fbl_ptr->bd[i].BDCtl =
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900952 cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) |
953 RX_BUF_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900955#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 lp->fbl_curid = 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900957#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900959 printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n",
960 dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 return 0;
962}
963
964static void
965tc35815_clear_queues(struct net_device *dev)
966{
967 struct tc35815_local *lp = dev->priv;
968 int i;
969
970 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900971 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
972 struct sk_buff *skb =
973 fdsystem != 0xffffffff ?
974 lp->tx_skbs[fdsystem].skb : NULL;
975#ifdef DEBUG
976 if (lp->tx_skbs[i].skb != skb) {
977 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
978 panic_queues(dev);
979 }
980#else
981 BUG_ON(lp->tx_skbs[i].skb != skb);
982#endif
983 if (skb) {
984 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
985 lp->tx_skbs[i].skb = NULL;
986 lp->tx_skbs[i].skb_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 dev_kfree_skb_any(skb);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900988 }
989 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 }
991
992 tc35815_init_queues(dev);
993}
994
995static void
996tc35815_free_queues(struct net_device *dev)
997{
998 struct tc35815_local *lp = dev->priv;
999 int i;
1000
1001 if (lp->tfd_base) {
1002 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001003 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
1004 struct sk_buff *skb =
1005 fdsystem != 0xffffffff ?
1006 lp->tx_skbs[fdsystem].skb : NULL;
1007#ifdef DEBUG
1008 if (lp->tx_skbs[i].skb != skb) {
1009 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
1010 panic_queues(dev);
1011 }
1012#else
1013 BUG_ON(lp->tx_skbs[i].skb != skb);
1014#endif
1015 if (skb) {
1016 dev_kfree_skb(skb);
1017 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
1018 lp->tx_skbs[i].skb = NULL;
1019 lp->tx_skbs[i].skb_dma = 0;
1020 }
1021 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 }
1023 }
1024
1025 lp->rfd_base = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 lp->rfd_limit = NULL;
1027 lp->rfd_cur = NULL;
1028 lp->fbl_ptr = NULL;
1029
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001030 for (i = 0; i < RX_BUF_NUM; i++) {
1031#ifdef TC35815_USE_PACKEDBUFFER
1032 if (lp->data_buf[i]) {
1033 free_rxbuf_page(lp->pci_dev,
1034 lp->data_buf[i], lp->data_buf_dma[i]);
1035 lp->data_buf[i] = NULL;
1036 }
1037#else
1038 if (lp->rx_skbs[i].skb) {
1039 free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb,
1040 lp->rx_skbs[i].skb_dma);
1041 lp->rx_skbs[i].skb = NULL;
1042 }
1043#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001045 if (lp->fd_buf) {
1046 pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM,
1047 lp->fd_buf, lp->fd_buf_dma);
1048 lp->fd_buf = NULL;
1049 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050}
1051
1052static void
1053dump_txfd(struct TxFD *fd)
1054{
1055 printk("TxFD(%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));
1060 printk("BD: ");
1061 printk(" %08x %08x",
1062 le32_to_cpu(fd->bd.BuffData),
1063 le32_to_cpu(fd->bd.BDCtl));
1064 printk("\n");
1065}
1066
1067static int
1068dump_rxfd(struct RxFD *fd)
1069{
1070 int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1071 if (bd_count > 8)
1072 bd_count = 8;
1073 printk("RxFD(%p): %08x %08x %08x %08x\n", fd,
1074 le32_to_cpu(fd->fd.FDNext),
1075 le32_to_cpu(fd->fd.FDSystem),
1076 le32_to_cpu(fd->fd.FDStat),
1077 le32_to_cpu(fd->fd.FDCtl));
1078 if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD)
1079 return 0;
1080 printk("BD: ");
1081 for (i = 0; i < bd_count; i++)
1082 printk(" %08x %08x",
1083 le32_to_cpu(fd->bd[i].BuffData),
1084 le32_to_cpu(fd->bd[i].BDCtl));
1085 printk("\n");
1086 return bd_count;
1087}
1088
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001089#if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090static void
1091dump_frfd(struct FrFD *fd)
1092{
1093 int i;
1094 printk("FrFD(%p): %08x %08x %08x %08x\n", fd,
1095 le32_to_cpu(fd->fd.FDNext),
1096 le32_to_cpu(fd->fd.FDSystem),
1097 le32_to_cpu(fd->fd.FDStat),
1098 le32_to_cpu(fd->fd.FDCtl));
1099 printk("BD: ");
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001100 for (i = 0; i < RX_BUF_NUM; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 printk(" %08x %08x",
1102 le32_to_cpu(fd->bd[i].BuffData),
1103 le32_to_cpu(fd->bd[i].BDCtl));
1104 printk("\n");
1105}
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001106#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001108#ifdef DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109static void
1110panic_queues(struct net_device *dev)
1111{
1112 struct tc35815_local *lp = dev->priv;
1113 int i;
1114
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001115 printk("TxFD base %p, start %u, end %u\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001116 lp->tfd_base, lp->tfd_start, lp->tfd_end);
1117 printk("RxFD base %p limit %p cur %p\n",
1118 lp->rfd_base, lp->rfd_limit, lp->rfd_cur);
1119 printk("FrFD %p\n", lp->fbl_ptr);
1120 for (i = 0; i < TX_FD_NUM; i++)
1121 dump_txfd(&lp->tfd_base[i]);
1122 for (i = 0; i < RX_FD_NUM; i++) {
1123 int bd_count = dump_rxfd(&lp->rfd_base[i]);
1124 i += (bd_count + 1) / 2; /* skip BDs */
1125 }
1126 dump_frfd(lp->fbl_ptr);
1127 panic("%s: Illegal queue state.", dev->name);
1128}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129#endif
1130
1131static void print_eth(char *add)
1132{
1133 int i;
1134
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001135 printk("print_eth(%p)\n", add);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 for (i = 0; i < 6; i++)
1137 printk(" %2.2X", (unsigned char) add[i + 6]);
1138 printk(" =>");
1139 for (i = 0; i < 6; i++)
1140 printk(" %2.2X", (unsigned char) add[i]);
1141 printk(" : %2.2X%2.2X\n", (unsigned char) add[12], (unsigned char) add[13]);
1142}
1143
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001144static int tc35815_tx_full(struct net_device *dev)
1145{
1146 struct tc35815_local *lp = dev->priv;
1147 return ((lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end);
1148}
1149
1150static void tc35815_restart(struct net_device *dev)
1151{
1152 struct tc35815_local *lp = dev->priv;
1153 int pid = lp->phy_addr;
1154 int do_phy_reset = 1;
1155 del_timer(&lp->timer); /* Kill if running */
1156
1157 if (lp->mii_id[0] == 0x0016 && (lp->mii_id[1] & 0xfc00) == 0xf800) {
1158 /* Resetting PHY cause problem on some chip... (SEEQ 80221) */
1159 do_phy_reset = 0;
1160 }
1161 if (do_phy_reset) {
1162 int timeout;
1163 tc_mdio_write(dev, pid, MII_BMCR, BMCR_RESET);
1164 timeout = 100;
1165 while (--timeout) {
1166 if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_RESET))
1167 break;
1168 udelay(1);
1169 }
1170 if (!timeout)
1171 printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name);
1172 }
1173
1174 tc35815_chip_reset(dev);
1175 tc35815_clear_queues(dev);
1176 tc35815_chip_init(dev);
1177 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1178 tc35815_set_multicast_list(dev);
1179}
1180
1181static void tc35815_tx_timeout(struct net_device *dev)
1182{
1183 struct tc35815_local *lp = dev->priv;
1184 struct tc35815_regs __iomem *tr =
1185 (struct tc35815_regs __iomem *)dev->base_addr;
1186
1187 printk(KERN_WARNING "%s: transmit timed out, status %#x\n",
1188 dev->name, tc_readl(&tr->Tx_Stat));
1189
1190 /* Try to restart the adaptor. */
1191 spin_lock_irq(&lp->lock);
1192 tc35815_restart(dev);
1193 spin_unlock_irq(&lp->lock);
1194
1195 lp->stats.tx_errors++;
1196
1197 /* If we have space available to accept new transmit
1198 * requests, wake up the queueing layer. This would
1199 * be the case if the chipset_init() call above just
1200 * flushes out the tx queue and empties it.
1201 *
1202 * If instead, the tx queue is retained then the
1203 * netif_wake_queue() call should be placed in the
1204 * TX completion interrupt handler of the driver instead
1205 * of here.
1206 */
1207 if (!tc35815_tx_full(dev))
1208 netif_wake_queue(dev);
1209}
1210
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211/*
1212 * Open/initialize the board. This is called (in the current kernel)
1213 * sometime after booting when the 'ifconfig' program is run.
1214 *
1215 * This routine should set everything up anew at each open, even
1216 * registers that "should" only need to be set once at boot, so that
1217 * there is non-reboot way to recover if something goes wrong.
1218 */
1219static int
1220tc35815_open(struct net_device *dev)
1221{
1222 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001223
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224 /*
1225 * This is used if the interrupt line can turned off (shared).
1226 * See 3c503.c for an example of selecting the IRQ at config-time.
1227 */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001228 if (request_irq(dev->irq, &tc35815_interrupt, IRQF_SHARED, dev->name, dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229 return -EAGAIN;
1230 }
1231
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001232 del_timer(&lp->timer); /* Kill if running */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 tc35815_chip_reset(dev);
1234
1235 if (tc35815_init_queues(dev) != 0) {
1236 free_irq(dev->irq, dev);
1237 return -EAGAIN;
1238 }
1239
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001240#ifdef TC35815_NAPI
1241 napi_enable(&lp->napi);
1242#endif
1243
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244 /* Reset the hardware here. Don't forget to set the station address. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001245 spin_lock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 tc35815_chip_init(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001247 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001249 /* We are now ready to accept transmit requeusts from
1250 * the queueing layer of the networking.
1251 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252 netif_start_queue(dev);
1253
1254 return 0;
1255}
1256
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001257/* This will only be invoked if your driver is _not_ in XOFF state.
1258 * What this means is that you need not check it, and that this
1259 * invariant will hold if you make sure that the netif_*_queue()
1260 * calls are done at the proper times.
1261 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
1263{
1264 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001265 struct TxFD *txfd;
1266 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001268 /* If some error occurs while trying to transmit this
1269 * packet, you should return '1' from this function.
1270 * In such a case you _may not_ do anything to the
1271 * SKB, it is still owned by the network queueing
1272 * layer when an error is returned. This means you
1273 * may not modify any SKB fields, you may not free
1274 * the SKB, etc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001277 /* This is the most common case for modern hardware.
1278 * The spinlock protects this code from the TX complete
1279 * hardware interrupt handler. Queue flow control is
1280 * thus managed under this lock as well.
1281 */
1282 spin_lock_irqsave(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001284 /* failsafe... (handle txdone now if half of FDs are used) */
1285 if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM >
1286 TX_FD_NUM / 2)
1287 tc35815_txdone(dev);
1288
1289 if (netif_msg_pktdata(lp))
1290 print_eth(skb->data);
1291#ifdef DEBUG
1292 if (lp->tx_skbs[lp->tfd_start].skb) {
1293 printk("%s: tx_skbs conflict.\n", dev->name);
1294 panic_queues(dev);
1295 }
1296#else
1297 BUG_ON(lp->tx_skbs[lp->tfd_start].skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001299 lp->tx_skbs[lp->tfd_start].skb = skb;
1300 lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001302 /*add to ring */
1303 txfd = &lp->tfd_base[lp->tfd_start];
1304 txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma);
1305 txfd->bd.BDCtl = cpu_to_le32(skb->len);
1306 txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start);
1307 txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001309 if (lp->tfd_start == lp->tfd_end) {
1310 struct tc35815_regs __iomem *tr =
1311 (struct tc35815_regs __iomem *)dev->base_addr;
1312 /* Start DMA Transmitter. */
1313 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314#ifdef GATHER_TXINT
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001315 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001317 if (netif_msg_tx_queued(lp)) {
1318 printk("%s: starting TxFD.\n", dev->name);
1319 dump_txfd(txfd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001321 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1322 } else {
1323 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL);
1324 if (netif_msg_tx_queued(lp)) {
1325 printk("%s: queueing TxFD.\n", dev->name);
1326 dump_txfd(txfd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001328 }
1329 lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
1330
1331 dev->trans_start = jiffies;
1332
1333 /* If we just used up the very last entry in the
1334 * TX ring on this device, tell the queueing
1335 * layer to send no more.
1336 */
1337 if (tc35815_tx_full(dev)) {
1338 if (netif_msg_tx_queued(lp))
1339 printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name);
1340 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 }
1342
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001343 /* When the TX completion hw interrupt arrives, this
1344 * is when the transmit statistics are updated.
1345 */
1346
1347 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 return 0;
1349}
1350
1351#define FATAL_ERROR_INT \
1352 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001353static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354{
1355 static int count;
1356 printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):",
1357 dev->name, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358 if (status & Int_IntPCI)
1359 printk(" IntPCI");
1360 if (status & Int_DmParErr)
1361 printk(" DmParErr");
1362 if (status & Int_IntNRAbt)
1363 printk(" IntNRAbt");
1364 printk("\n");
1365 if (count++ > 100)
1366 panic("%s: Too many fatal errors.", dev->name);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001367 printk(KERN_WARNING "%s: Resetting ...\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 /* Try to restart the adaptor. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001369 tc35815_restart(dev);
1370}
1371
1372#ifdef TC35815_NAPI
1373static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit)
1374#else
1375static int tc35815_do_interrupt(struct net_device *dev, u32 status)
1376#endif
1377{
1378 struct tc35815_local *lp = dev->priv;
1379 struct tc35815_regs __iomem *tr =
1380 (struct tc35815_regs __iomem *)dev->base_addr;
1381 int ret = -1;
1382
1383 /* Fatal errors... */
1384 if (status & FATAL_ERROR_INT) {
1385 tc35815_fatal_error_interrupt(dev, status);
1386 return 0;
1387 }
1388 /* recoverable errors */
1389 if (status & Int_IntFDAEx) {
1390 /* disable FDAEx int. (until we make rooms...) */
1391 tc_writel(tc_readl(&tr->Int_En) & ~Int_FDAExEn, &tr->Int_En);
1392 printk(KERN_WARNING
1393 "%s: Free Descriptor Area Exhausted (%#x).\n",
1394 dev->name, status);
1395 lp->stats.rx_dropped++;
1396 ret = 0;
1397 }
1398 if (status & Int_IntBLEx) {
1399 /* disable BLEx int. (until we make rooms...) */
1400 tc_writel(tc_readl(&tr->Int_En) & ~Int_BLExEn, &tr->Int_En);
1401 printk(KERN_WARNING
1402 "%s: Buffer List Exhausted (%#x).\n",
1403 dev->name, status);
1404 lp->stats.rx_dropped++;
1405 ret = 0;
1406 }
1407 if (status & Int_IntExBD) {
1408 printk(KERN_WARNING
1409 "%s: Excessive Buffer Descriptiors (%#x).\n",
1410 dev->name, status);
1411 lp->stats.rx_length_errors++;
1412 ret = 0;
1413 }
1414
1415 /* normal notification */
1416 if (status & Int_IntMacRx) {
1417 /* Got a packet(s). */
1418#ifdef TC35815_NAPI
1419 ret = tc35815_rx(dev, limit);
1420#else
1421 tc35815_rx(dev);
1422 ret = 0;
1423#endif
1424 lp->lstats.rx_ints++;
1425 }
1426 if (status & Int_IntMacTx) {
1427 /* Transmit complete. */
1428 lp->lstats.tx_ints++;
1429 tc35815_txdone(dev);
1430 netif_wake_queue(dev);
1431 ret = 0;
1432 }
1433 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434}
1435
1436/*
1437 * The typical workload of the driver:
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001438 * Handle the network interface interrupts.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 */
David Howells7d12e782006-10-05 14:55:46 +01001440static irqreturn_t tc35815_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441{
1442 struct net_device *dev = dev_id;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001443 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001444 struct tc35815_regs __iomem *tr =
1445 (struct tc35815_regs __iomem *)dev->base_addr;
1446#ifdef TC35815_NAPI
1447 u32 dmactl = tc_readl(&tr->DMA_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001449 if (!(dmactl & DMA_IntMask)) {
1450 /* disable interrupts */
1451 tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001452 if (netif_rx_schedule_prep(dev, &lp->napi))
1453 __netif_rx_schedule(dev, &lp->napi);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001454 else {
1455 printk(KERN_ERR "%s: interrupt taken in poll\n",
1456 dev->name);
1457 BUG();
1458 }
1459 (void)tc_readl(&tr->Int_Src); /* flush */
1460 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001462 return IRQ_NONE;
1463#else
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001464 int handled;
1465 u32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001467 spin_lock(&lp->lock);
1468 status = tc_readl(&tr->Int_Src);
1469 tc_writel(status, &tr->Int_Src); /* write to clear */
1470 handled = tc35815_do_interrupt(dev, status);
1471 (void)tc_readl(&tr->Int_Src); /* flush */
1472 spin_unlock(&lp->lock);
1473 return IRQ_RETVAL(handled >= 0);
1474#endif /* TC35815_NAPI */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475}
1476
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001477#ifdef CONFIG_NET_POLL_CONTROLLER
1478static void tc35815_poll_controller(struct net_device *dev)
1479{
1480 disable_irq(dev->irq);
1481 tc35815_interrupt(dev->irq, dev);
1482 enable_irq(dev->irq);
1483}
1484#endif
1485
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486/* We have a good packet(s), get it/them out of the buffers. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001487#ifdef TC35815_NAPI
1488static int
1489tc35815_rx(struct net_device *dev, int limit)
1490#else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491static void
1492tc35815_rx(struct net_device *dev)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001493#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494{
1495 struct tc35815_local *lp = dev->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 unsigned int fdctl;
1497 int i;
1498 int buf_free_count = 0;
1499 int fd_free_count = 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001500#ifdef TC35815_NAPI
1501 int received = 0;
1502#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503
1504 while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) {
1505 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat);
1506 int pkt_len = fdctl & FD_FDLength_MASK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001508#ifdef DEBUG
1509 struct RxFD *next_rfd;
1510#endif
1511#if (RX_CTL_CMD & Rx_StripCRC) == 0
1512 pkt_len -= 4;
1513#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001515 if (netif_msg_rx_status(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 dump_rxfd(lp->rfd_cur);
1517 if (status & Rx_Good) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518 struct sk_buff *skb;
1519 unsigned char *data;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001520 int cur_bd;
1521#ifdef TC35815_USE_PACKEDBUFFER
1522 int offset;
1523#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001525#ifdef TC35815_NAPI
1526 if (--limit < 0)
1527 break;
1528#endif
1529#ifdef TC35815_USE_PACKEDBUFFER
1530 BUG_ON(bd_count > 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 skb = dev_alloc_skb(pkt_len + 2); /* +2: for reserve */
1532 if (skb == NULL) {
1533 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
1534 dev->name);
1535 lp->stats.rx_dropped++;
1536 break;
1537 }
1538 skb_reserve(skb, 2); /* 16 bit alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539
1540 data = skb_put(skb, pkt_len);
1541
1542 /* copy from receive buffer */
1543 cur_bd = 0;
1544 offset = 0;
1545 while (offset < pkt_len && cur_bd < bd_count) {
1546 int len = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BDCtl) &
1547 BD_BuffLength_MASK;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001548 dma_addr_t dma = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BuffData);
1549 void *rxbuf = rxbuf_bus_to_virt(lp, dma);
1550 if (offset + len > pkt_len)
1551 len = pkt_len - offset;
1552#ifdef TC35815_DMA_SYNC_ONDEMAND
1553 pci_dma_sync_single_for_cpu(lp->pci_dev,
1554 dma, len,
1555 PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001556#endif
1557 memcpy(data + offset, rxbuf, len);
Atsushi Nemoto793bc0a2007-03-14 01:02:20 +09001558#ifdef TC35815_DMA_SYNC_ONDEMAND
1559 pci_dma_sync_single_for_device(lp->pci_dev,
1560 dma, len,
1561 PCI_DMA_FROMDEVICE);
1562#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563 offset += len;
1564 cur_bd++;
1565 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001566#else /* TC35815_USE_PACKEDBUFFER */
1567 BUG_ON(bd_count > 1);
1568 cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl)
1569 & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1570#ifdef DEBUG
1571 if (cur_bd >= RX_BUF_NUM) {
1572 printk("%s: invalid BDID.\n", dev->name);
1573 panic_queues(dev);
1574 }
1575 BUG_ON(lp->rx_skbs[cur_bd].skb_dma !=
1576 (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3));
1577 if (!lp->rx_skbs[cur_bd].skb) {
1578 printk("%s: NULL skb.\n", dev->name);
1579 panic_queues(dev);
1580 }
1581#else
1582 BUG_ON(cur_bd >= RX_BUF_NUM);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001584 skb = lp->rx_skbs[cur_bd].skb;
1585 prefetch(skb->data);
1586 lp->rx_skbs[cur_bd].skb = NULL;
1587 lp->fbl_count--;
1588 pci_unmap_single(lp->pci_dev,
1589 lp->rx_skbs[cur_bd].skb_dma,
1590 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1591 if (!HAVE_DMA_RXALIGN(lp))
1592 memmove(skb->data, skb->data - 2, pkt_len);
1593 data = skb_put(skb, pkt_len);
1594#endif /* TC35815_USE_PACKEDBUFFER */
1595 if (netif_msg_pktdata(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001596 print_eth(data);
1597 skb->protocol = eth_type_trans(skb, dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001598#ifdef TC35815_NAPI
1599 netif_receive_skb(skb);
1600 received++;
1601#else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602 netif_rx(skb);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001603#endif
1604 dev->last_rx = jiffies;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 lp->stats.rx_packets++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001606 lp->stats.rx_bytes += pkt_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607 } else {
1608 lp->stats.rx_errors++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001609 printk(KERN_DEBUG "%s: Rx error (status %x)\n",
1610 dev->name, status & Rx_Stat_Mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1612 if ((status & Rx_LongErr) && (status & Rx_CRCErr)) {
1613 status &= ~(Rx_LongErr|Rx_CRCErr);
1614 status |= Rx_Over;
1615 }
1616 if (status & Rx_LongErr) lp->stats.rx_length_errors++;
1617 if (status & Rx_Over) lp->stats.rx_fifo_errors++;
1618 if (status & Rx_CRCErr) lp->stats.rx_crc_errors++;
1619 if (status & Rx_Align) lp->stats.rx_frame_errors++;
1620 }
1621
1622 if (bd_count > 0) {
1623 /* put Free Buffer back to controller */
1624 int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl);
1625 unsigned char id =
1626 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001627#ifdef DEBUG
1628 if (id >= RX_BUF_NUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629 printk("%s: invalid BDID.\n", dev->name);
1630 panic_queues(dev);
1631 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001632#else
1633 BUG_ON(id >= RX_BUF_NUM);
1634#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635 /* free old buffers */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001636#ifdef TC35815_USE_PACKEDBUFFER
1637 while (lp->fbl_curid != id)
1638#else
1639 while (lp->fbl_count < RX_BUF_NUM)
1640#endif
1641 {
1642#ifdef TC35815_USE_PACKEDBUFFER
1643 unsigned char curid = lp->fbl_curid;
1644#else
1645 unsigned char curid =
1646 (id + 1 + lp->fbl_count) % RX_BUF_NUM;
1647#endif
1648 struct BDesc *bd = &lp->fbl_ptr->bd[curid];
1649#ifdef DEBUG
1650 bdctl = le32_to_cpu(bd->BDCtl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 if (bdctl & BD_CownsBD) {
1652 printk("%s: Freeing invalid BD.\n",
1653 dev->name);
1654 panic_queues(dev);
1655 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001656#endif
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001657 /* pass BD to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001658#ifndef TC35815_USE_PACKEDBUFFER
1659 if (!lp->rx_skbs[curid].skb) {
1660 lp->rx_skbs[curid].skb =
1661 alloc_rxbuf_skb(dev,
1662 lp->pci_dev,
1663 &lp->rx_skbs[curid].skb_dma);
1664 if (!lp->rx_skbs[curid].skb)
1665 break; /* try on next reception */
1666 bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma);
1667 }
1668#endif /* TC35815_USE_PACKEDBUFFER */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669 /* Note: BDLength was modified by chip. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001670 bd->BDCtl = cpu_to_le32(BD_CownsBD |
1671 (curid << BD_RxBDID_SHIFT) |
1672 RX_BUF_SIZE);
1673#ifdef TC35815_USE_PACKEDBUFFER
1674 lp->fbl_curid = (curid + 1) % RX_BUF_NUM;
1675 if (netif_msg_rx_status(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676 printk("%s: Entering new FBD %d\n",
1677 dev->name, lp->fbl_curid);
1678 dump_frfd(lp->fbl_ptr);
1679 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001680#else
1681 lp->fbl_count++;
1682#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 buf_free_count++;
1684 }
1685 }
1686
1687 /* put RxFD back to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001688#ifdef DEBUG
1689 next_rfd = fd_bus_to_virt(lp,
1690 le32_to_cpu(lp->rfd_cur->fd.FDNext));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) {
1692 printk("%s: RxFD FDNext invalid.\n", dev->name);
1693 panic_queues(dev);
1694 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001695#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) {
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001697 /* pass FD to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001698#ifdef DEBUG
1699 lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead);
1700#else
1701 lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL);
1702#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD);
1704 lp->rfd_cur++;
1705 fd_free_count++;
1706 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001707 if (lp->rfd_cur > lp->rfd_limit)
1708 lp->rfd_cur = lp->rfd_base;
1709#ifdef DEBUG
1710 if (lp->rfd_cur != next_rfd)
1711 printk("rfd_cur = %p, next_rfd %p\n",
1712 lp->rfd_cur, next_rfd);
1713#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714 }
1715
1716 /* re-enable BL/FDA Exhaust interrupts. */
1717 if (fd_free_count) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001718 struct tc35815_regs __iomem *tr =
1719 (struct tc35815_regs __iomem *)dev->base_addr;
1720 u32 en, en_old = tc_readl(&tr->Int_En);
1721 en = en_old | Int_FDAExEn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722 if (buf_free_count)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001723 en |= Int_BLExEn;
1724 if (en != en_old)
1725 tc_writel(en, &tr->Int_En);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001727#ifdef TC35815_NAPI
1728 return received;
1729#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730}
1731
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001732#ifdef TC35815_NAPI
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001733static int tc35815_poll(struct napi_struct *napi, int budget)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001734{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001735 struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi);
1736 struct net_device *dev = lp->dev;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001737 struct tc35815_regs __iomem *tr =
1738 (struct tc35815_regs __iomem *)dev->base_addr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001739 int received = 0, handled;
1740 u32 status;
1741
1742 spin_lock(&lp->lock);
1743 status = tc_readl(&tr->Int_Src);
1744 do {
1745 tc_writel(status, &tr->Int_Src); /* write to clear */
1746
1747 handled = tc35815_do_interrupt(dev, status, limit);
1748 if (handled >= 0) {
1749 received += handled;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001750 if (received >= budget)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001751 break;
1752 }
1753 status = tc_readl(&tr->Int_Src);
1754 } while (status);
1755 spin_unlock(&lp->lock);
1756
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001757 if (received < budget) {
1758 netif_rx_complete(dev, napi);
1759 /* enable interrupts */
1760 tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl);
1761 }
1762 return received;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001763}
1764#endif
1765
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766#ifdef NO_CHECK_CARRIER
1767#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1768#else
1769#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1770#endif
1771
1772static void
1773tc35815_check_tx_stat(struct net_device *dev, int status)
1774{
1775 struct tc35815_local *lp = dev->priv;
1776 const char *msg = NULL;
1777
1778 /* count collisions */
1779 if (status & Tx_ExColl)
1780 lp->stats.collisions += 16;
1781 if (status & Tx_TxColl_MASK)
1782 lp->stats.collisions += status & Tx_TxColl_MASK;
1783
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001784#ifndef NO_CHECK_CARRIER
1785 /* TX4939 does not have NCarr */
1786 if (lp->boardtype == TC35815_TX4939)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787 status &= ~Tx_NCarr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001788#ifdef WORKAROUND_LOSTCAR
1789 /* WORKAROUND: ignore LostCrS in full duplex operation */
1790 if ((lp->timer_state != asleep && lp->timer_state != lcheck)
1791 || lp->fullduplex)
1792 status &= ~Tx_NCarr;
1793#endif
1794#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795
1796 if (!(status & TX_STA_ERR)) {
1797 /* no error. */
1798 lp->stats.tx_packets++;
1799 return;
1800 }
1801
1802 lp->stats.tx_errors++;
1803 if (status & Tx_ExColl) {
1804 lp->stats.tx_aborted_errors++;
1805 msg = "Excessive Collision.";
1806 }
1807 if (status & Tx_Under) {
1808 lp->stats.tx_fifo_errors++;
1809 msg = "Tx FIFO Underrun.";
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001810 if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) {
1811 lp->lstats.tx_underrun++;
1812 if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) {
1813 struct tc35815_regs __iomem *tr =
1814 (struct tc35815_regs __iomem *)dev->base_addr;
1815 tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh);
1816 msg = "Tx FIFO Underrun.Change Tx threshold to max.";
1817 }
1818 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819 }
1820 if (status & Tx_Defer) {
1821 lp->stats.tx_fifo_errors++;
1822 msg = "Excessive Deferral.";
1823 }
1824#ifndef NO_CHECK_CARRIER
1825 if (status & Tx_NCarr) {
1826 lp->stats.tx_carrier_errors++;
1827 msg = "Lost Carrier Sense.";
1828 }
1829#endif
1830 if (status & Tx_LateColl) {
1831 lp->stats.tx_aborted_errors++;
1832 msg = "Late Collision.";
1833 }
1834 if (status & Tx_TxPar) {
1835 lp->stats.tx_fifo_errors++;
1836 msg = "Transmit Parity Error.";
1837 }
1838 if (status & Tx_SQErr) {
1839 lp->stats.tx_heartbeat_errors++;
1840 msg = "Signal Quality Error.";
1841 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001842 if (msg && netif_msg_tx_err(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status);
1844}
1845
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001846/* This handles TX complete events posted by the device
1847 * via interrupts.
1848 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849static void
1850tc35815_txdone(struct net_device *dev)
1851{
1852 struct tc35815_local *lp = dev->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853 struct TxFD *txfd;
1854 unsigned int fdctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855
1856 txfd = &lp->tfd_base[lp->tfd_end];
1857 while (lp->tfd_start != lp->tfd_end &&
1858 !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) {
1859 int status = le32_to_cpu(txfd->fd.FDStat);
1860 struct sk_buff *skb;
1861 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001862 u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001864 if (netif_msg_tx_done(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865 printk("%s: complete TxFD.\n", dev->name);
1866 dump_txfd(txfd);
1867 }
1868 tc35815_check_tx_stat(dev, status);
1869
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001870 skb = fdsystem != 0xffffffff ?
1871 lp->tx_skbs[fdsystem].skb : NULL;
1872#ifdef DEBUG
1873 if (lp->tx_skbs[lp->tfd_end].skb != skb) {
1874 printk("%s: tx_skbs mismatch.\n", dev->name);
1875 panic_queues(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001877#else
1878 BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb);
1879#endif
1880 if (skb) {
1881 lp->stats.tx_bytes += skb->len;
1882 pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE);
1883 lp->tx_skbs[lp->tfd_end].skb = NULL;
1884 lp->tx_skbs[lp->tfd_end].skb_dma = 0;
1885#ifdef TC35815_NAPI
1886 dev_kfree_skb_any(skb);
1887#else
1888 dev_kfree_skb_irq(skb);
1889#endif
1890 }
1891 txfd->fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001892
Linus Torvalds1da177e2005-04-16 15:20:36 -07001893 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM;
1894 txfd = &lp->tfd_base[lp->tfd_end];
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001895#ifdef DEBUG
1896 if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001897 printk("%s: TxFD FDNext invalid.\n", dev->name);
1898 panic_queues(dev);
1899 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001900#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901 if (fdnext & FD_Next_EOL) {
1902 /* DMA Transmitter has been stopping... */
1903 if (lp->tfd_end != lp->tfd_start) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001904 struct tc35815_regs __iomem *tr =
1905 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001906 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM;
1907 struct TxFD* txhead = &lp->tfd_base[head];
1908 int qlen = (lp->tfd_start + TX_FD_NUM
1909 - lp->tfd_end) % TX_FD_NUM;
1910
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001911#ifdef DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) {
1913 printk("%s: TxFD FDCtl invalid.\n", dev->name);
1914 panic_queues(dev);
1915 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001916#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917 /* log max queue length */
1918 if (lp->lstats.max_tx_qlen < qlen)
1919 lp->lstats.max_tx_qlen = qlen;
1920
1921
1922 /* start DMA Transmitter again */
1923 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1924#ifdef GATHER_TXINT
1925 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1926#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001927 if (netif_msg_tx_queued(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928 printk("%s: start TxFD on queue.\n",
1929 dev->name);
1930 dump_txfd(txfd);
1931 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001932 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933 }
1934 break;
1935 }
1936 }
1937
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001938 /* If we had stopped the queue due to a "tx full"
1939 * condition, and space has now been made available,
1940 * wake up the queue.
1941 */
1942 if (netif_queue_stopped(dev) && ! tc35815_tx_full(dev))
1943 netif_wake_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001944}
1945
1946/* The inverse routine to tc35815_open(). */
1947static int
1948tc35815_close(struct net_device *dev)
1949{
1950 struct tc35815_local *lp = dev->priv;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001951
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952 netif_stop_queue(dev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001953#ifdef TC35815_NAPI
1954 napi_disable(&lp->napi);
1955#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956
1957 /* Flush the Tx and disable Rx here. */
1958
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001959 del_timer(&lp->timer); /* Kill if running */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 tc35815_chip_reset(dev);
1961 free_irq(dev->irq, dev);
1962
1963 tc35815_free_queues(dev);
1964
1965 return 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001966
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967}
1968
1969/*
1970 * Get the current statistics.
1971 * This may be called with the card open or closed.
1972 */
1973static struct net_device_stats *tc35815_get_stats(struct net_device *dev)
1974{
1975 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001976 struct tc35815_regs __iomem *tr =
1977 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 if (netif_running(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979 /* Update the statistics from the device registers. */
1980 lp->stats.rx_missed_errors = tc_readl(&tr->Miss_Cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 }
1982
1983 return &lp->stats;
1984}
1985
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001986static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001987{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001988 struct tc35815_local *lp = dev->priv;
1989 struct tc35815_regs __iomem *tr =
1990 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001991 int cam_index = index * 6;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001992 u32 cam_data;
1993 u32 saved_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994 saved_addr = tc_readl(&tr->CAM_Adr);
1995
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001996 if (netif_msg_hw(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997 int i;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001998 printk(KERN_DEBUG "%s: CAM %d:", dev->name, index);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999 for (i = 0; i < 6; i++)
2000 printk(" %02x", addr[i]);
2001 printk("\n");
2002 }
2003 if (index & 1) {
2004 /* read modify write */
2005 tc_writel(cam_index - 2, &tr->CAM_Adr);
2006 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000;
2007 cam_data |= addr[0] << 8 | addr[1];
2008 tc_writel(cam_data, &tr->CAM_Data);
2009 /* write whole word */
2010 tc_writel(cam_index + 2, &tr->CAM_Adr);
2011 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
2012 tc_writel(cam_data, &tr->CAM_Data);
2013 } else {
2014 /* write whole word */
2015 tc_writel(cam_index, &tr->CAM_Adr);
2016 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
2017 tc_writel(cam_data, &tr->CAM_Data);
2018 /* read modify write */
2019 tc_writel(cam_index + 4, &tr->CAM_Adr);
2020 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff;
2021 cam_data |= addr[4] << 24 | (addr[5] << 16);
2022 tc_writel(cam_data, &tr->CAM_Data);
2023 }
2024
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025 tc_writel(saved_addr, &tr->CAM_Adr);
2026}
2027
2028
2029/*
2030 * Set or clear the multicast filter for this adaptor.
2031 * num_addrs == -1 Promiscuous mode, receive all packets
2032 * num_addrs == 0 Normal mode, clear multicast list
2033 * num_addrs > 0 Multicast mode, receive normal and MC packets,
2034 * and do best-effort filtering.
2035 */
2036static void
2037tc35815_set_multicast_list(struct net_device *dev)
2038{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002039 struct tc35815_regs __iomem *tr =
2040 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041
2042 if (dev->flags&IFF_PROMISC)
2043 {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002044#ifdef WORKAROUND_100HALF_PROMISC
2045 /* With some (all?) 100MHalf HUB, controller will hang
2046 * if we enabled promiscuous mode before linkup... */
2047 struct tc35815_local *lp = dev->priv;
2048 int pid = lp->phy_addr;
2049 if (!(tc_mdio_read(dev, pid, MII_BMSR) & BMSR_LSTATUS))
2050 return;
2051#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052 /* Enable promiscuous mode */
2053 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl);
2054 }
2055 else if((dev->flags&IFF_ALLMULTI) || dev->mc_count > CAM_ENTRY_MAX - 3)
2056 {
2057 /* CAM 0, 1, 20 are reserved. */
2058 /* Disable promiscuous mode, use normal mode. */
2059 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl);
2060 }
2061 else if(dev->mc_count)
2062 {
2063 struct dev_mc_list* cur_addr = dev->mc_list;
2064 int i;
2065 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE);
2066
2067 tc_writel(0, &tr->CAM_Ctl);
2068 /* Walk the address list, and load the filter */
2069 for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
2070 if (!cur_addr)
2071 break;
2072 /* entry 0,1 is reserved. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002073 tc35815_set_cam_entry(dev, i + 2, cur_addr->dmi_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002074 ena_bits |= CAM_Ena_Bit(i + 2);
2075 }
2076 tc_writel(ena_bits, &tr->CAM_Ena);
2077 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2078 }
2079 else {
2080 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2081 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2082 }
2083}
2084
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002085static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002086{
2087 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002088 strcpy(info->driver, MODNAME);
2089 strcpy(info->version, DRV_VERSION);
2090 strcpy(info->bus_info, pci_name(lp->pci_dev));
2091}
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002092
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002093static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2094{
2095 struct tc35815_local *lp = dev->priv;
2096 spin_lock_irq(&lp->lock);
2097 mii_ethtool_gset(&lp->mii, cmd);
2098 spin_unlock_irq(&lp->lock);
2099 return 0;
2100}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002102static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2103{
2104 struct tc35815_local *lp = dev->priv;
2105 int rc;
2106#if 1 /* use our negotiation method... */
2107 /* Verify the settings we care about. */
2108 if (cmd->autoneg != AUTONEG_ENABLE &&
2109 cmd->autoneg != AUTONEG_DISABLE)
2110 return -EINVAL;
2111 if (cmd->autoneg == AUTONEG_DISABLE &&
2112 ((cmd->speed != SPEED_100 &&
2113 cmd->speed != SPEED_10) ||
2114 (cmd->duplex != DUPLEX_HALF &&
2115 cmd->duplex != DUPLEX_FULL)))
2116 return -EINVAL;
2117
2118 /* Ok, do it to it. */
2119 spin_lock_irq(&lp->lock);
2120 del_timer(&lp->timer);
2121 tc35815_start_auto_negotiation(dev, cmd);
2122 spin_unlock_irq(&lp->lock);
2123 rc = 0;
2124#else
2125 spin_lock_irq(&lp->lock);
2126 rc = mii_ethtool_sset(&lp->mii, cmd);
2127 spin_unlock_irq(&lp->lock);
2128#endif
2129 return rc;
2130}
2131
2132static int tc35815_nway_reset(struct net_device *dev)
2133{
2134 struct tc35815_local *lp = dev->priv;
2135 int rc;
2136 spin_lock_irq(&lp->lock);
2137 rc = mii_nway_restart(&lp->mii);
2138 spin_unlock_irq(&lp->lock);
2139 return rc;
2140}
2141
2142static u32 tc35815_get_link(struct net_device *dev)
2143{
2144 struct tc35815_local *lp = dev->priv;
2145 int rc;
2146 spin_lock_irq(&lp->lock);
2147 rc = mii_link_ok(&lp->mii);
2148 spin_unlock_irq(&lp->lock);
2149 return rc;
2150}
2151
2152static u32 tc35815_get_msglevel(struct net_device *dev)
2153{
2154 struct tc35815_local *lp = dev->priv;
2155 return lp->msg_enable;
2156}
2157
2158static void tc35815_set_msglevel(struct net_device *dev, u32 datum)
2159{
2160 struct tc35815_local *lp = dev->priv;
2161 lp->msg_enable = datum;
2162}
2163
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002164static int tc35815_get_sset_count(struct net_device *dev, int sset)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002165{
2166 struct tc35815_local *lp = dev->priv;
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002167
2168 switch (sset) {
2169 case ETH_SS_STATS:
2170 return sizeof(lp->lstats) / sizeof(int);
2171 default:
2172 return -EOPNOTSUPP;
2173 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002174}
2175
2176static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2177{
2178 struct tc35815_local *lp = dev->priv;
2179 data[0] = lp->lstats.max_tx_qlen;
2180 data[1] = lp->lstats.tx_ints;
2181 data[2] = lp->lstats.rx_ints;
2182 data[3] = lp->lstats.tx_underrun;
2183}
2184
2185static struct {
2186 const char str[ETH_GSTRING_LEN];
2187} ethtool_stats_keys[] = {
2188 { "max_tx_qlen" },
2189 { "tx_ints" },
2190 { "rx_ints" },
2191 { "tx_underrun" },
2192};
2193
2194static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2195{
2196 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2197}
2198
2199static const struct ethtool_ops tc35815_ethtool_ops = {
2200 .get_drvinfo = tc35815_get_drvinfo,
2201 .get_settings = tc35815_get_settings,
2202 .set_settings = tc35815_set_settings,
2203 .nway_reset = tc35815_nway_reset,
2204 .get_link = tc35815_get_link,
2205 .get_msglevel = tc35815_get_msglevel,
2206 .set_msglevel = tc35815_set_msglevel,
2207 .get_strings = tc35815_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002208 .get_sset_count = tc35815_get_sset_count,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002209 .get_ethtool_stats = tc35815_get_ethtool_stats,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002210};
2211
2212static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2213{
2214 struct tc35815_local *lp = dev->priv;
2215 int rc;
2216
2217 if (!netif_running(dev))
2218 return -EINVAL;
2219
2220 spin_lock_irq(&lp->lock);
2221 rc = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
2222 spin_unlock_irq(&lp->lock);
2223
2224 return rc;
2225}
2226
2227static int tc_mdio_read(struct net_device *dev, int phy_id, int location)
2228{
2229 struct tc35815_regs __iomem *tr =
2230 (struct tc35815_regs __iomem *)dev->base_addr;
2231 u32 data;
2232 tc_writel(MD_CA_Busy | (phy_id << 5) | location, &tr->MD_CA);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
2234 ;
2235 data = tc_readl(&tr->MD_Data);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002236 return data & 0xffff;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237}
2238
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002239static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
2240 int val)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002242 struct tc35815_regs __iomem *tr =
2243 (struct tc35815_regs __iomem *)dev->base_addr;
2244 tc_writel(val, &tr->MD_Data);
2245 tc_writel(MD_CA_Busy | MD_CA_Wr | (phy_id << 5) | location, &tr->MD_CA);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246 while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
2247 ;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002248}
2249
2250/* Auto negotiation. The scheme is very simple. We have a timer routine
2251 * that keeps watching the auto negotiation process as it progresses.
2252 * The DP83840 is first told to start doing it's thing, we set up the time
2253 * and place the timer state machine in it's initial state.
2254 *
2255 * Here the timer peeks at the DP83840 status registers at each click to see
2256 * if the auto negotiation has completed, we assume here that the DP83840 PHY
2257 * will time out at some point and just tell us what (didn't) happen. For
2258 * complete coverage we only allow so many of the ticks at this level to run,
2259 * when this has expired we print a warning message and try another strategy.
2260 * This "other" strategy is to force the interface into various speed/duplex
2261 * configurations and we stop when we see a link-up condition before the
2262 * maximum number of "peek" ticks have occurred.
2263 *
2264 * Once a valid link status has been detected we configure the BigMAC and
2265 * the rest of the Happy Meal to speak the most efficient protocol we could
2266 * get a clean link for. The priority for link configurations, highest first
2267 * is:
2268 * 100 Base-T Full Duplex
2269 * 100 Base-T Half Duplex
2270 * 10 Base-T Full Duplex
2271 * 10 Base-T Half Duplex
2272 *
2273 * We start a new timer now, after a successful auto negotiation status has
2274 * been detected. This timer just waits for the link-up bit to get set in
2275 * the BMCR of the DP83840. When this occurs we print a kernel log message
2276 * describing the link type in use and the fact that it is up.
2277 *
2278 * If a fatal error of some sort is signalled and detected in the interrupt
2279 * service routine, and the chip is reset, or the link is ifconfig'd down
2280 * and then back up, this entire process repeats itself all over again.
2281 */
2282/* Note: Above comments are come from sunhme driver. */
2283
2284static int tc35815_try_next_permutation(struct net_device *dev)
2285{
2286 struct tc35815_local *lp = dev->priv;
2287 int pid = lp->phy_addr;
2288 unsigned short bmcr;
2289
2290 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2291
2292 /* Downgrade from full to half duplex. Only possible via ethtool. */
2293 if (bmcr & BMCR_FULLDPLX) {
2294 bmcr &= ~BMCR_FULLDPLX;
2295 printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
2296 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2297 return 0;
2298 }
2299
2300 /* Downgrade from 100 to 10. */
2301 if (bmcr & BMCR_SPEED100) {
2302 bmcr &= ~BMCR_SPEED100;
2303 printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
2304 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2305 return 0;
2306 }
2307
2308 /* We've tried everything. */
2309 return -1;
2310}
2311
2312static void
2313tc35815_display_link_mode(struct net_device *dev)
2314{
2315 struct tc35815_local *lp = dev->priv;
2316 int pid = lp->phy_addr;
2317 unsigned short lpa, bmcr;
2318 char *speed = "", *duplex = "";
2319
2320 lpa = tc_mdio_read(dev, pid, MII_LPA);
2321 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2322 if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
2323 speed = "100Mb/s";
2324 else
2325 speed = "10Mb/s";
2326 if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
2327 duplex = "Full Duplex";
2328 else
2329 duplex = "Half Duplex";
2330
2331 if (netif_msg_link(lp))
2332 printk(KERN_INFO "%s: Link is up at %s, %s.\n",
2333 dev->name, speed, duplex);
2334 printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2335 dev->name,
2336 bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
2337}
2338
2339static void tc35815_display_forced_link_mode(struct net_device *dev)
2340{
2341 struct tc35815_local *lp = dev->priv;
2342 int pid = lp->phy_addr;
2343 unsigned short bmcr;
2344 char *speed = "", *duplex = "";
2345
2346 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2347 if (bmcr & BMCR_SPEED100)
2348 speed = "100Mb/s";
2349 else
2350 speed = "10Mb/s";
2351 if (bmcr & BMCR_FULLDPLX)
2352 duplex = "Full Duplex.\n";
2353 else
2354 duplex = "Half Duplex.\n";
2355
2356 if (netif_msg_link(lp))
2357 printk(KERN_INFO "%s: Link has been forced up at %s, %s",
2358 dev->name, speed, duplex);
2359}
2360
2361static void tc35815_set_link_modes(struct net_device *dev)
2362{
2363 struct tc35815_local *lp = dev->priv;
2364 struct tc35815_regs __iomem *tr =
2365 (struct tc35815_regs __iomem *)dev->base_addr;
2366 int pid = lp->phy_addr;
2367 unsigned short bmcr, lpa;
2368 int speed;
2369
2370 if (lp->timer_state == arbwait) {
2371 lpa = tc_mdio_read(dev, pid, MII_LPA);
2372 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2373 printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
2374 dev->name,
2375 bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
2376 if (!(lpa & (LPA_10HALF | LPA_10FULL |
2377 LPA_100HALF | LPA_100FULL))) {
2378 /* fall back to 10HALF */
2379 printk(KERN_INFO "%s: bad ability %04x - falling back to 10HD.\n",
2380 dev->name, lpa);
2381 lpa = LPA_10HALF;
2382 }
2383 if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
2384 lp->fullduplex = 1;
2385 else
2386 lp->fullduplex = 0;
2387 if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
2388 speed = 100;
2389 else
2390 speed = 10;
2391 } else {
2392 /* Forcing a link mode. */
2393 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2394 if (bmcr & BMCR_FULLDPLX)
2395 lp->fullduplex = 1;
2396 else
2397 lp->fullduplex = 0;
2398 if (bmcr & BMCR_SPEED100)
2399 speed = 100;
2400 else
2401 speed = 10;
2402 }
2403
2404 tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_HaltReq, &tr->MAC_Ctl);
2405 if (lp->fullduplex) {
2406 tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_FullDup, &tr->MAC_Ctl);
2407 } else {
2408 tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_FullDup, &tr->MAC_Ctl);
2409 }
2410 tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_HaltReq, &tr->MAC_Ctl);
2411
2412 /* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */
2413
2414#ifndef NO_CHECK_CARRIER
2415 /* TX4939 does not have EnLCarr */
2416 if (lp->boardtype != TC35815_TX4939) {
2417#ifdef WORKAROUND_LOSTCAR
2418 /* WORKAROUND: enable LostCrS only if half duplex operation */
2419 if (!lp->fullduplex && lp->boardtype != TC35815_TX4939)
2420 tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, &tr->Tx_Ctl);
2421#endif
2422 }
2423#endif
2424 lp->mii.full_duplex = lp->fullduplex;
2425}
2426
2427static void tc35815_timer(unsigned long data)
2428{
2429 struct net_device *dev = (struct net_device *)data;
2430 struct tc35815_local *lp = dev->priv;
2431 int pid = lp->phy_addr;
2432 unsigned short bmsr, bmcr, lpa;
2433 int restart_timer = 0;
2434
2435 spin_lock_irq(&lp->lock);
2436
2437 lp->timer_ticks++;
2438 switch (lp->timer_state) {
2439 case arbwait:
2440 /*
2441 * Only allow for 5 ticks, thats 10 seconds and much too
2442 * long to wait for arbitration to complete.
2443 */
2444 /* TC35815 need more times... */
2445 if (lp->timer_ticks >= 10) {
2446 /* Enter force mode. */
2447 if (!options.doforce) {
2448 printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
2449 " cable probblem?\n", dev->name);
2450 /* Try to restart the adaptor. */
2451 tc35815_restart(dev);
2452 goto out;
2453 }
2454 printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
2455 " trying force link mode\n", dev->name);
2456 printk(KERN_DEBUG "%s: BMCR %x BMSR %x\n", dev->name,
2457 tc_mdio_read(dev, pid, MII_BMCR),
2458 tc_mdio_read(dev, pid, MII_BMSR));
2459 bmcr = BMCR_SPEED100;
2460 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2461
2462 /*
2463 * OK, seems we need do disable the transceiver
2464 * for the first tick to make sure we get an
2465 * accurate link state at the second tick.
2466 */
2467
2468 lp->timer_state = ltrywait;
2469 lp->timer_ticks = 0;
2470 restart_timer = 1;
2471 } else {
2472 /* Anything interesting happen? */
2473 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2474 if (bmsr & BMSR_ANEGCOMPLETE) {
2475 /* Just what we've been waiting for... */
2476 tc35815_set_link_modes(dev);
2477
2478 /*
2479 * Success, at least so far, advance our state
2480 * engine.
2481 */
2482 lp->timer_state = lupwait;
2483 restart_timer = 1;
2484 } else {
2485 restart_timer = 1;
2486 }
2487 }
2488 break;
2489
2490 case lupwait:
2491 /*
2492 * Auto negotiation was successful and we are awaiting a
2493 * link up status. I have decided to let this timer run
2494 * forever until some sort of error is signalled, reporting
2495 * a message to the user at 10 second intervals.
2496 */
2497 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2498 if (bmsr & BMSR_LSTATUS) {
2499 /*
2500 * Wheee, it's up, display the link mode in use and put
2501 * the timer to sleep.
2502 */
2503 tc35815_display_link_mode(dev);
2504 netif_carrier_on(dev);
2505#ifdef WORKAROUND_100HALF_PROMISC
2506 /* delayed promiscuous enabling */
2507 if (dev->flags & IFF_PROMISC)
2508 tc35815_set_multicast_list(dev);
2509#endif
2510#if 1
2511 lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
2512 lp->timer_state = lcheck;
2513 restart_timer = 1;
2514#else
2515 lp->timer_state = asleep;
2516 restart_timer = 0;
2517#endif
2518 } else {
2519 if (lp->timer_ticks >= 10) {
2520 printk(KERN_NOTICE "%s: Auto negotiation successful, link still "
2521 "not completely up.\n", dev->name);
2522 lp->timer_ticks = 0;
2523 restart_timer = 1;
2524 } else {
2525 restart_timer = 1;
2526 }
2527 }
2528 break;
2529
2530 case ltrywait:
2531 /*
2532 * Making the timeout here too long can make it take
2533 * annoyingly long to attempt all of the link mode
2534 * permutations, but then again this is essentially
2535 * error recovery code for the most part.
2536 */
2537 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2538 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2539 if (lp->timer_ticks == 1) {
2540 /*
2541 * Re-enable transceiver, we'll re-enable the
2542 * transceiver next tick, then check link state
2543 * on the following tick.
2544 */
2545 restart_timer = 1;
2546 break;
2547 }
2548 if (lp->timer_ticks == 2) {
2549 restart_timer = 1;
2550 break;
2551 }
2552 if (bmsr & BMSR_LSTATUS) {
2553 /* Force mode selection success. */
2554 tc35815_display_forced_link_mode(dev);
2555 netif_carrier_on(dev);
2556 tc35815_set_link_modes(dev);
2557#ifdef WORKAROUND_100HALF_PROMISC
2558 /* delayed promiscuous enabling */
2559 if (dev->flags & IFF_PROMISC)
2560 tc35815_set_multicast_list(dev);
2561#endif
2562#if 1
2563 lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
2564 lp->timer_state = lcheck;
2565 restart_timer = 1;
2566#else
2567 lp->timer_state = asleep;
2568 restart_timer = 0;
2569#endif
2570 } else {
2571 if (lp->timer_ticks >= 4) { /* 6 seconds or so... */
2572 int ret;
2573
2574 ret = tc35815_try_next_permutation(dev);
2575 if (ret == -1) {
2576 /*
2577 * Aieee, tried them all, reset the
2578 * chip and try all over again.
2579 */
2580 printk(KERN_NOTICE "%s: Link down, "
2581 "cable problem?\n",
2582 dev->name);
2583
2584 /* Try to restart the adaptor. */
2585 tc35815_restart(dev);
2586 goto out;
2587 }
2588 lp->timer_ticks = 0;
2589 restart_timer = 1;
2590 } else {
2591 restart_timer = 1;
2592 }
2593 }
2594 break;
2595
2596 case lcheck:
2597 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2598 lpa = tc_mdio_read(dev, pid, MII_LPA);
2599 if (bmcr & (BMCR_PDOWN | BMCR_ISOLATE | BMCR_RESET)) {
2600 printk(KERN_ERR "%s: PHY down? (BMCR %x)\n", dev->name,
2601 bmcr);
2602 } else if ((lp->saved_lpa ^ lpa) &
2603 (LPA_100FULL|LPA_100HALF|LPA_10FULL|LPA_10HALF)) {
2604 printk(KERN_NOTICE "%s: link status changed"
2605 " (BMCR %x LPA %x->%x)\n", dev->name,
2606 bmcr, lp->saved_lpa, lpa);
2607 } else {
2608 /* go on */
2609 restart_timer = 1;
2610 break;
2611 }
2612 /* Try to restart the adaptor. */
2613 tc35815_restart(dev);
2614 goto out;
2615
2616 case asleep:
2617 default:
2618 /* Can't happens.... */
2619 printk(KERN_ERR "%s: Aieee, link timer is asleep but we got "
2620 "one anyways!\n", dev->name);
2621 restart_timer = 0;
2622 lp->timer_ticks = 0;
2623 lp->timer_state = asleep; /* foo on you */
2624 break;
2625 }
2626
2627 if (restart_timer) {
2628 lp->timer.expires = jiffies + msecs_to_jiffies(1200);
2629 add_timer(&lp->timer);
2630 }
2631out:
2632 spin_unlock_irq(&lp->lock);
2633}
2634
2635static void tc35815_start_auto_negotiation(struct net_device *dev,
2636 struct ethtool_cmd *ep)
2637{
2638 struct tc35815_local *lp = dev->priv;
2639 int pid = lp->phy_addr;
2640 unsigned short bmsr, bmcr, advertize;
2641 int timeout;
2642
2643 netif_carrier_off(dev);
2644 bmsr = tc_mdio_read(dev, pid, MII_BMSR);
2645 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2646 advertize = tc_mdio_read(dev, pid, MII_ADVERTISE);
2647
2648 if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
2649 if (options.speed || options.duplex) {
2650 /* Advertise only specified configuration. */
2651 advertize &= ~(ADVERTISE_10HALF |
2652 ADVERTISE_10FULL |
2653 ADVERTISE_100HALF |
2654 ADVERTISE_100FULL);
2655 if (options.speed != 10) {
2656 if (options.duplex != 1)
2657 advertize |= ADVERTISE_100FULL;
2658 if (options.duplex != 2)
2659 advertize |= ADVERTISE_100HALF;
2660 }
2661 if (options.speed != 100) {
2662 if (options.duplex != 1)
2663 advertize |= ADVERTISE_10FULL;
2664 if (options.duplex != 2)
2665 advertize |= ADVERTISE_10HALF;
2666 }
2667 if (options.speed == 100)
2668 bmcr |= BMCR_SPEED100;
2669 else if (options.speed == 10)
2670 bmcr &= ~BMCR_SPEED100;
2671 if (options.duplex == 2)
2672 bmcr |= BMCR_FULLDPLX;
2673 else if (options.duplex == 1)
2674 bmcr &= ~BMCR_FULLDPLX;
2675 } else {
2676 /* Advertise everything we can support. */
2677 if (bmsr & BMSR_10HALF)
2678 advertize |= ADVERTISE_10HALF;
2679 else
2680 advertize &= ~ADVERTISE_10HALF;
2681 if (bmsr & BMSR_10FULL)
2682 advertize |= ADVERTISE_10FULL;
2683 else
2684 advertize &= ~ADVERTISE_10FULL;
2685 if (bmsr & BMSR_100HALF)
2686 advertize |= ADVERTISE_100HALF;
2687 else
2688 advertize &= ~ADVERTISE_100HALF;
2689 if (bmsr & BMSR_100FULL)
2690 advertize |= ADVERTISE_100FULL;
2691 else
2692 advertize &= ~ADVERTISE_100FULL;
2693 }
2694
2695 tc_mdio_write(dev, pid, MII_ADVERTISE, advertize);
2696
2697 /* Enable Auto-Negotiation, this is usually on already... */
2698 bmcr |= BMCR_ANENABLE;
2699 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2700
2701 /* Restart it to make sure it is going. */
2702 bmcr |= BMCR_ANRESTART;
2703 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2704 printk(KERN_DEBUG "%s: ADVERTISE %x BMCR %x\n", dev->name, advertize, bmcr);
2705
2706 /* BMCR_ANRESTART self clears when the process has begun. */
2707 timeout = 64; /* More than enough. */
2708 while (--timeout) {
2709 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2710 if (!(bmcr & BMCR_ANRESTART))
2711 break; /* got it. */
2712 udelay(10);
2713 }
2714 if (!timeout) {
2715 printk(KERN_ERR "%s: TC35815 would not start auto "
2716 "negotiation BMCR=0x%04x\n",
2717 dev->name, bmcr);
2718 printk(KERN_NOTICE "%s: Performing force link "
2719 "detection.\n", dev->name);
2720 goto force_link;
2721 } else {
2722 printk(KERN_DEBUG "%s: auto negotiation started.\n", dev->name);
2723 lp->timer_state = arbwait;
2724 }
2725 } else {
2726force_link:
2727 /* Force the link up, trying first a particular mode.
2728 * Either we are here at the request of ethtool or
2729 * because the Happy Meal would not start to autoneg.
2730 */
2731
2732 /* Disable auto-negotiation in BMCR, enable the duplex and
2733 * speed setting, init the timer state machine, and fire it off.
2734 */
2735 if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
2736 bmcr = BMCR_SPEED100;
2737 } else {
2738 if (ep->speed == SPEED_100)
2739 bmcr = BMCR_SPEED100;
2740 else
2741 bmcr = 0;
2742 if (ep->duplex == DUPLEX_FULL)
2743 bmcr |= BMCR_FULLDPLX;
2744 }
2745 tc_mdio_write(dev, pid, MII_BMCR, bmcr);
2746
2747 /* OK, seems we need do disable the transceiver for the first
2748 * tick to make sure we get an accurate link state at the
2749 * second tick.
2750 */
2751 lp->timer_state = ltrywait;
2752 }
2753
2754 del_timer(&lp->timer);
2755 lp->timer_ticks = 0;
2756 lp->timer.expires = jiffies + msecs_to_jiffies(1200);
2757 add_timer(&lp->timer);
2758}
2759
2760static void tc35815_find_phy(struct net_device *dev)
2761{
2762 struct tc35815_local *lp = dev->priv;
2763 int pid = lp->phy_addr;
2764 unsigned short id0;
2765
2766 /* find MII phy */
2767 for (pid = 31; pid >= 0; pid--) {
2768 id0 = tc_mdio_read(dev, pid, MII_BMSR);
2769 if (id0 != 0xffff && id0 != 0x0000 &&
2770 (id0 & BMSR_RESV) != (0xffff & BMSR_RESV) /* paranoia? */
2771 ) {
2772 lp->phy_addr = pid;
2773 break;
2774 }
2775 }
2776 if (pid < 0) {
2777 printk(KERN_ERR "%s: No MII Phy found.\n",
2778 dev->name);
2779 lp->phy_addr = pid = 0;
2780 }
2781
2782 lp->mii_id[0] = tc_mdio_read(dev, pid, MII_PHYSID1);
2783 lp->mii_id[1] = tc_mdio_read(dev, pid, MII_PHYSID2);
2784 if (netif_msg_hw(lp))
2785 printk(KERN_INFO "%s: PHY(%02x) ID %04x %04x\n", dev->name,
2786 pid, lp->mii_id[0], lp->mii_id[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002787}
2788
2789static void tc35815_phy_chip_init(struct net_device *dev)
2790{
2791 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002792 int pid = lp->phy_addr;
2793 unsigned short bmcr;
2794 struct ethtool_cmd ecmd, *ep;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002796 /* dis-isolate if needed. */
2797 bmcr = tc_mdio_read(dev, pid, MII_BMCR);
2798 if (bmcr & BMCR_ISOLATE) {
2799 int count = 32;
2800 printk(KERN_DEBUG "%s: unisolating...", dev->name);
2801 tc_mdio_write(dev, pid, MII_BMCR, bmcr & ~BMCR_ISOLATE);
2802 while (--count) {
2803 if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_ISOLATE))
2804 break;
2805 udelay(20);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002807 printk(" %s.\n", count ? "done" : "failed");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002808 }
2809
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002810 if (options.speed && options.duplex) {
2811 ecmd.autoneg = AUTONEG_DISABLE;
2812 ecmd.speed = options.speed == 10 ? SPEED_10 : SPEED_100;
2813 ecmd.duplex = options.duplex == 1 ? DUPLEX_HALF : DUPLEX_FULL;
2814 ep = &ecmd;
2815 } else {
2816 ep = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002817 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002818 tc35815_start_auto_negotiation(dev, ep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002819}
2820
2821static void tc35815_chip_reset(struct net_device *dev)
2822{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002823 struct tc35815_regs __iomem *tr =
2824 (struct tc35815_regs __iomem *)dev->base_addr;
2825 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002826 /* reset the controller */
2827 tc_writel(MAC_Reset, &tr->MAC_Ctl);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002828 udelay(4); /* 3200ns */
2829 i = 0;
2830 while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) {
2831 if (i++ > 100) {
2832 printk(KERN_ERR "%s: MAC reset failed.\n", dev->name);
2833 break;
2834 }
2835 mdelay(1);
2836 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002837 tc_writel(0, &tr->MAC_Ctl);
2838
2839 /* initialize registers to default value */
2840 tc_writel(0, &tr->DMA_Ctl);
2841 tc_writel(0, &tr->TxThrsh);
2842 tc_writel(0, &tr->TxPollCtr);
2843 tc_writel(0, &tr->RxFragSize);
2844 tc_writel(0, &tr->Int_En);
2845 tc_writel(0, &tr->FDA_Bas);
2846 tc_writel(0, &tr->FDA_Lim);
2847 tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */
2848 tc_writel(0, &tr->CAM_Ctl);
2849 tc_writel(0, &tr->Tx_Ctl);
2850 tc_writel(0, &tr->Rx_Ctl);
2851 tc_writel(0, &tr->CAM_Ena);
2852 (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */
2853
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002854 /* initialize internal SRAM */
2855 tc_writel(DMA_TestMode, &tr->DMA_Ctl);
2856 for (i = 0; i < 0x1000; i += 4) {
2857 tc_writel(i, &tr->CAM_Adr);
2858 tc_writel(0, &tr->CAM_Data);
2859 }
2860 tc_writel(0, &tr->DMA_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002861}
2862
2863static void tc35815_chip_init(struct net_device *dev)
2864{
2865 struct tc35815_local *lp = dev->priv;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002866 struct tc35815_regs __iomem *tr =
2867 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868 unsigned long txctl = TX_CTL_CMD;
2869
2870 tc35815_phy_chip_init(dev);
2871
2872 /* load station address to CAM */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002873 tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002874
2875 /* Enable CAM (broadcast and unicast) */
2876 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2877 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2878
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002879 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2880 if (HAVE_DMA_RXALIGN(lp))
2881 tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl);
2882 else
2883 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl);
2884#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -07002885 tc_writel(RxFrag_EnPack | ETH_ZLEN, &tr->RxFragSize); /* Packing */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002886#else
2887 tc_writel(ETH_ZLEN, &tr->RxFragSize);
2888#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002889 tc_writel(0, &tr->TxPollCtr); /* Batch mode */
2890 tc_writel(TX_THRESHOLD, &tr->TxThrsh);
2891 tc_writel(INT_EN_CMD, &tr->Int_En);
2892
2893 /* set queues */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002894 tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002895 tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base,
2896 &tr->FDA_Lim);
2897 /*
2898 * Activation method:
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002899 * First, enable the MAC Transmitter and the DMA Receive circuits.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002900 * Then enable the DMA Transmitter and the MAC Receive circuits.
2901 */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002902 tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002903 tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002904
Linus Torvalds1da177e2005-04-16 15:20:36 -07002905 /* start MAC transmitter */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002906#ifndef NO_CHECK_CARRIER
2907 /* TX4939 does not have EnLCarr */
2908 if (lp->boardtype == TC35815_TX4939)
2909 txctl &= ~Tx_EnLCarr;
2910#ifdef WORKAROUND_LOSTCAR
Linus Torvalds1da177e2005-04-16 15:20:36 -07002911 /* WORKAROUND: ignore LostCrS in full duplex operation */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002912 if ((lp->timer_state != asleep && lp->timer_state != lcheck) ||
2913 lp->fullduplex)
2914 txctl &= ~Tx_EnLCarr;
2915#endif
2916#endif /* !NO_CHECK_CARRIER */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002917#ifdef GATHER_TXINT
2918 txctl &= ~Tx_EnComp; /* disable global tx completion int. */
2919#endif
2920 tc_writel(txctl, &tr->Tx_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002921}
2922
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002923#ifdef CONFIG_PM
2924static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state)
2925{
2926 struct net_device *dev = pci_get_drvdata(pdev);
2927 struct tc35815_local *lp = dev->priv;
2928 unsigned long flags;
2929
2930 pci_save_state(pdev);
2931 if (!netif_running(dev))
2932 return 0;
2933 netif_device_detach(dev);
2934 spin_lock_irqsave(&lp->lock, flags);
2935 del_timer(&lp->timer); /* Kill if running */
2936 tc35815_chip_reset(dev);
2937 spin_unlock_irqrestore(&lp->lock, flags);
2938 pci_set_power_state(pdev, PCI_D3hot);
2939 return 0;
2940}
2941
2942static int tc35815_resume(struct pci_dev *pdev)
2943{
2944 struct net_device *dev = pci_get_drvdata(pdev);
2945 struct tc35815_local *lp = dev->priv;
2946 unsigned long flags;
2947
2948 pci_restore_state(pdev);
2949 if (!netif_running(dev))
2950 return 0;
2951 pci_set_power_state(pdev, PCI_D0);
2952 spin_lock_irqsave(&lp->lock, flags);
2953 tc35815_restart(dev);
2954 spin_unlock_irqrestore(&lp->lock, flags);
2955 netif_device_attach(dev);
2956 return 0;
2957}
2958#endif /* CONFIG_PM */
2959
2960static struct pci_driver tc35815_pci_driver = {
2961 .name = MODNAME,
2962 .id_table = tc35815_pci_tbl,
2963 .probe = tc35815_init_one,
2964 .remove = __devexit_p(tc35815_remove_one),
2965#ifdef CONFIG_PM
2966 .suspend = tc35815_suspend,
2967 .resume = tc35815_resume,
2968#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002969};
2970
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002971module_param_named(speed, options.speed, int, 0);
2972MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps");
2973module_param_named(duplex, options.duplex, int, 0);
2974MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full");
2975module_param_named(doforce, options.doforce, int, 0);
2976MODULE_PARM_DESC(doforce, "try force link mode if auto-negotiation failed");
2977
Linus Torvalds1da177e2005-04-16 15:20:36 -07002978static int __init tc35815_init_module(void)
2979{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002980 return pci_register_driver(&tc35815_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981}
2982
2983static void __exit tc35815_cleanup_module(void)
2984{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002985 pci_unregister_driver(&tc35815_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002986}
Jeff Garzik420e8522007-02-24 17:02:16 -05002987
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988module_init(tc35815_init_module);
2989module_exit(tc35815_cleanup_module);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002990
2991MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2992MODULE_LICENSE("GPL");