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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 Nemotoc6686fe2008-04-12 00:47:46 +090026#define DRV_VERSION "1.37-NAPI"
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090027#else
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090028#define DRV_VERSION "1.37"
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>
Atsushi Nemoto82a99282008-12-11 20:58:04 -080040#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include <linux/slab.h>
42#include <linux/string.h>
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090043#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <linux/errno.h>
45#include <linux/init.h>
46#include <linux/netdevice.h>
47#include <linux/etherdevice.h>
48#include <linux/skbuff.h>
49#include <linux/delay.h>
50#include <linux/pci.h>
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090051#include <linux/phy.h>
52#include <linux/workqueue.h>
Atsushi Nemotobd43da82007-06-29 22:34:53 +090053#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#include <asm/byteorder.h>
56
Linus Torvalds1da177e2005-04-16 15:20:36 -070057/* First, a few definitions that the brave might change. */
58
Linus Torvalds1da177e2005-04-16 15:20:36 -070059#define GATHER_TXINT /* On-Demand Tx Interrupt */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090060#define WORKAROUND_LOSTCAR
61#define WORKAROUND_100HALF_PROMISC
62/* #define TC35815_USE_PACKEDBUFFER */
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090064enum tc35815_chiptype {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090065 TC35815CF = 0,
66 TC35815_NWU,
67 TC35815_TX4939,
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090068};
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090069
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090070/* indexed by tc35815_chiptype, above */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090071static const struct {
72 const char *name;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +090073} chip_info[] __devinitdata = {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090074 { "TOSHIBA TC35815CF 10/100BaseTX" },
75 { "TOSHIBA TC35815 with Wake on LAN" },
76 { "TOSHIBA TC35815/TX4939" },
77};
78
79static const struct pci_device_id tc35815_pci_tbl[] = {
80 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF },
81 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU },
82 {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 },
83 {0,}
84};
Atsushi Nemoto7f225b42008-04-11 00:25:31 +090085MODULE_DEVICE_TABLE(pci, tc35815_pci_tbl);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090086
87/* see MODULE_PARM_DESC */
88static struct tc35815_options {
89 int speed;
90 int duplex;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +090091} options;
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93/*
94 * Registers
95 */
96struct tc35815_regs {
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +090097 __u32 DMA_Ctl; /* 0x00 */
98 __u32 TxFrmPtr;
99 __u32 TxThrsh;
100 __u32 TxPollCtr;
101 __u32 BLFrmPtr;
102 __u32 RxFragSize;
103 __u32 Int_En;
104 __u32 FDA_Bas;
105 __u32 FDA_Lim; /* 0x20 */
106 __u32 Int_Src;
107 __u32 unused0[2];
108 __u32 PauseCnt;
109 __u32 RemPauCnt;
110 __u32 TxCtlFrmStat;
111 __u32 unused1;
112 __u32 MAC_Ctl; /* 0x40 */
113 __u32 CAM_Ctl;
114 __u32 Tx_Ctl;
115 __u32 Tx_Stat;
116 __u32 Rx_Ctl;
117 __u32 Rx_Stat;
118 __u32 MD_Data;
119 __u32 MD_CA;
120 __u32 CAM_Adr; /* 0x60 */
121 __u32 CAM_Data;
122 __u32 CAM_Ena;
123 __u32 PROM_Ctl;
124 __u32 PROM_Data;
125 __u32 Algn_Cnt;
126 __u32 CRC_Cnt;
127 __u32 Miss_Cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128};
129
130/*
131 * Bit assignments
132 */
133/* DMA_Ctl bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +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 */
139#define DMA_IntMask 0x00040000 /* 1:Interupt mask */
140#define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */
141#define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */
142#define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */
143#define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */
144#define DMA_TestMode 0x00002000 /* 1:Test Mode */
145#define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */
146#define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
148/* RxFragSize bit asign ---------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900149#define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */
150#define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152/* MAC_Ctl bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900153#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166/* PROM_Ctl bit asign ------------------------------------------------------ */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900167#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
176/* CAM_Ctl bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900177#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
184/* CAM_Ena bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900185#define CAM_ENTRY_MAX 21 /* CAM Data entry max count */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186#define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900187#define CAM_Ena_Bit(index) (1 << (index))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188#define CAM_ENTRY_DESTINATION 0
189#define CAM_ENTRY_SOURCE 1
190#define CAM_ENTRY_MACCTL 20
191
192/* Tx_Ctl bit asign -------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900193#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
206/* Tx_Stat bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900207#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) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
222/* Rx_Ctl bit asign -------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900223#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
236/* Rx_Stat bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900237#define Rx_Halted 0x00008000 /* Rx Halted */
238#define Rx_Good 0x00004000 /* Rx Good */
239#define Rx_RxPar 0x00002000 /* Rx Parity Error */
Atsushi Nemoto842e08b2008-10-28 22:30:23 +0900240#define Rx_TypePkt 0x00001000 /* Rx Type Packet */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900241#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 */
Atsushi Nemoto842e08b2008-10-28 22:30:23 +0900248#define Rx_InLenErr 0x00000010 /* Rx In Range Frame Length Error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
Atsushi Nemoto842e08b2008-10-28 22:30:23 +0900250#define Rx_Stat_Mask 0x0000FFF0 /* Rx All Status Mask */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
252/* Int_En bit asign -------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900253#define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */
254#define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Ctl Complete Enable */
255#define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */
256#define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */
257#define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */
258#define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */
259#define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */
260#define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */
261#define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */
262#define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */
263#define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */
264#define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */
265 /* Exhausted Enable */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
267/* Int_Src bit asign ------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900268#define Int_NRabt 0x00004000 /* 1:Non Recoverable error */
269#define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */
270#define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */
271#define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */
272#define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */
273#define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */
274#define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */
275#define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */
276#define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */
277#define Int_SWInt 0x00000020 /* 1:Software request & Clear */
278#define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */
279#define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */
280#define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */
281#define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */
282#define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
284/* MD_CA bit asign --------------------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900285#define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */
286#define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */
287#define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290/*
291 * Descriptors
292 */
293
294/* Frame descripter */
295struct FDesc {
296 volatile __u32 FDNext;
297 volatile __u32 FDSystem;
298 volatile __u32 FDStat;
299 volatile __u32 FDCtl;
300};
301
302/* Buffer descripter */
303struct BDesc {
304 volatile __u32 BuffData;
305 volatile __u32 BDCtl;
306};
307
308#define FD_ALIGN 16
309
310/* Frame Descripter bit asign ---------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900311#define FD_FDLength_MASK 0x0000FFFF /* Length MASK */
312#define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */
313#define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314#define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900315#define FD_FrmOpt_IntTx 0x20000000 /* Tx only */
316#define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317#define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */
318#define FD_FrmOpt_Packing 0x04000000 /* Rx only */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900319#define FD_CownsFD 0x80000000 /* FD Controller owner bit */
320#define FD_Next_EOL 0x00000001 /* FD EOL indicator */
321#define FD_BDCnt_SHIFT 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322
323/* Buffer Descripter bit asign --------------------------------------------- */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900324#define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */
325#define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */
326#define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */
327#define BD_CownsBD 0x80000000 /* BD Controller owner bit */
328#define BD_RxBDID_SHIFT 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329#define BD_RxBDSeqN_SHIFT 24
330
331
332/* Some useful constants. */
333#undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */
334
335#ifdef NO_CHECK_CARRIER
336#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900337 Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \
338 Tx_En) /* maybe 0x7b01 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339#else
340#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900341 Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
342 Tx_En) /* maybe 0x7b01 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343#endif
344#define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
Atsushi Nemoto82a99282008-12-11 20:58:04 -0800345 | Rx_EnCRCErr | Rx_EnAlign | Rx_StripCRC | Rx_RxEn) /* maybe 0x6f11 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346#define INT_EN_CMD (Int_NRAbtEn | \
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900347 Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \
349 Int_STargAbtEn | \
350 Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900351#define DMA_CTL_CMD DMA_BURST_SIZE
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900352#define HAVE_DMA_RXALIGN(lp) likely((lp)->chiptype != TC35815CF)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
354/* Tuning parameters */
355#define DMA_BURST_SIZE 32
356#define TX_THRESHOLD 1024
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900357/* used threshold with packet max byte for low pci transfer ability.*/
358#define TX_THRESHOLD_MAX 1536
359/* setting threshold max value when overrun error occured this count. */
360#define TX_THRESHOLD_KEEP_LIMIT 10
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900362/* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
363#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364#define FD_PAGE_NUM 2
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900365#define RX_BUF_NUM 8 /* >= 2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366#define RX_FD_NUM 250 /* >= 32 */
367#define TX_FD_NUM 128
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900368#define RX_BUF_SIZE PAGE_SIZE
369#else /* TC35815_USE_PACKEDBUFFER */
370#define FD_PAGE_NUM 4
371#define RX_BUF_NUM 128 /* < 256 */
372#define RX_FD_NUM 256 /* >= 32 */
373#define TX_FD_NUM 128
374#if RX_CTL_CMD & Rx_LongEn
375#define RX_BUF_SIZE PAGE_SIZE
376#elif RX_CTL_CMD & Rx_StripCRC
Atsushi Nemoto82a99282008-12-11 20:58:04 -0800377#define RX_BUF_SIZE \
378 L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + NET_IP_ALIGN)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900379#else
Atsushi Nemoto82a99282008-12-11 20:58:04 -0800380#define RX_BUF_SIZE \
381 L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN + NET_IP_ALIGN)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900382#endif
383#endif /* TC35815_USE_PACKEDBUFFER */
384#define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */
385#define NAPI_WEIGHT 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
387struct TxFD {
388 struct FDesc fd;
389 struct BDesc bd;
390 struct BDesc unused;
391};
392
393struct RxFD {
394 struct FDesc fd;
395 struct BDesc bd[0]; /* variable length */
396};
397
398struct FrFD {
399 struct FDesc fd;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900400 struct BDesc bd[RX_BUF_NUM];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401};
402
403
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +0900404#define tc_readl(addr) ioread32(addr)
405#define tc_writel(d, addr) iowrite32(d, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900407#define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
408
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900409/* Information that need to be kept for each controller. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410struct tc35815_local {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900411 struct pci_dev *pci_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700413 struct net_device *dev;
414 struct napi_struct napi;
415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 /* statistics */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 struct {
418 int max_tx_qlen;
419 int tx_ints;
420 int rx_ints;
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900421 int tx_underrun;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 } lstats;
423
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900424 /* Tx control lock. This protects the transmit buffer ring
425 * state along with the "tx full" state of the driver. This
426 * means all netif_queue flow control actions are protected
427 * by this lock as well.
428 */
429 spinlock_t lock;
430
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700431 struct mii_bus *mii_bus;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900432 struct phy_device *phy_dev;
433 int duplex;
434 int speed;
435 int link;
436 struct work_struct restart_work;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438 /*
439 * Transmitting: Batch Mode.
440 * 1 BD in 1 TxFD.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900441 * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 * 1 circular FD for Free Buffer List.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900443 * RX_BUF_NUM BD in Free Buffer FD.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 * One Free Buffer BD has PAGE_SIZE data buffer.
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900445 * Or Non-Packing Mode.
446 * 1 circular FD for Free Buffer List.
447 * RX_BUF_NUM BD in Free Buffer FD.
448 * One Free Buffer BD has ETH_FRAME_LEN data buffer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900450 void *fd_buf; /* for TxFD, RxFD, FrFD */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900451 dma_addr_t fd_buf_dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 struct TxFD *tfd_base;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900453 unsigned int tfd_start;
454 unsigned int tfd_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 struct RxFD *rfd_base;
456 struct RxFD *rfd_limit;
457 struct RxFD *rfd_cur;
458 struct FrFD *fbl_ptr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900459#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 unsigned char fbl_curid;
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900461 void *data_buf[RX_BUF_NUM]; /* packing */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900462 dma_addr_t data_buf_dma[RX_BUF_NUM];
463 struct {
464 struct sk_buff *skb;
465 dma_addr_t skb_dma;
466 } tx_skbs[TX_FD_NUM];
467#else
468 unsigned int fbl_count;
469 struct {
470 struct sk_buff *skb;
471 dma_addr_t skb_dma;
472 } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM];
473#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900474 u32 msg_enable;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900475 enum tc35815_chiptype chiptype;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476};
477
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900478static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt)
479{
480 return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf);
481}
482#ifdef DEBUG
483static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
484{
485 return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma));
486}
487#endif
488#ifdef TC35815_USE_PACKEDBUFFER
489static inline void *rxbuf_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
490{
491 int i;
492 for (i = 0; i < RX_BUF_NUM; i++) {
493 if (bus >= lp->data_buf_dma[i] &&
494 bus < lp->data_buf_dma[i] + PAGE_SIZE)
495 return (void *)((u8 *)lp->data_buf[i] +
496 (bus - lp->data_buf_dma[i]));
497 }
498 return NULL;
499}
500
501#define TC35815_DMA_SYNC_ONDEMAND
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900502static void *alloc_rxbuf_page(struct pci_dev *hwdev, dma_addr_t *dma_handle)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900503{
504#ifdef TC35815_DMA_SYNC_ONDEMAND
505 void *buf;
506 /* pci_map + pci_dma_sync will be more effective than
507 * pci_alloc_consistent on some archs. */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900508 buf = (void *)__get_free_page(GFP_ATOMIC);
509 if (!buf)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900510 return NULL;
511 *dma_handle = pci_map_single(hwdev, buf, PAGE_SIZE,
512 PCI_DMA_FROMDEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -0700513 if (pci_dma_mapping_error(hwdev, *dma_handle)) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900514 free_page((unsigned long)buf);
515 return NULL;
516 }
517 return buf;
518#else
519 return pci_alloc_consistent(hwdev, PAGE_SIZE, dma_handle);
520#endif
521}
522
523static void free_rxbuf_page(struct pci_dev *hwdev, void *buf, dma_addr_t dma_handle)
524{
525#ifdef TC35815_DMA_SYNC_ONDEMAND
526 pci_unmap_single(hwdev, dma_handle, PAGE_SIZE, PCI_DMA_FROMDEVICE);
527 free_page((unsigned long)buf);
528#else
529 pci_free_consistent(hwdev, PAGE_SIZE, buf, dma_handle);
530#endif
531}
532#else /* TC35815_USE_PACKEDBUFFER */
533static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev,
534 struct pci_dev *hwdev,
535 dma_addr_t *dma_handle)
536{
537 struct sk_buff *skb;
538 skb = dev_alloc_skb(RX_BUF_SIZE);
539 if (!skb)
540 return NULL;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900541 *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE,
542 PCI_DMA_FROMDEVICE);
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -0700543 if (pci_dma_mapping_error(hwdev, *dma_handle)) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900544 dev_kfree_skb_any(skb);
545 return NULL;
546 }
547 skb_reserve(skb, 2); /* make IP header 4byte aligned */
548 return skb;
549}
550
551static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle)
552{
553 pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE,
554 PCI_DMA_FROMDEVICE);
555 dev_kfree_skb_any(skb);
556}
557#endif /* TC35815_USE_PACKEDBUFFER */
558
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559/* Index to functions, as function prototypes. */
560
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561static int tc35815_open(struct net_device *dev);
562static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900563static irqreturn_t tc35815_interrupt(int irq, void *dev_id);
564#ifdef TC35815_NAPI
565static int tc35815_rx(struct net_device *dev, int limit);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700566static int tc35815_poll(struct napi_struct *napi, int budget);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900567#else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568static void tc35815_rx(struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900569#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570static void tc35815_txdone(struct net_device *dev);
571static int tc35815_close(struct net_device *dev);
572static struct net_device_stats *tc35815_get_stats(struct net_device *dev);
573static void tc35815_set_multicast_list(struct net_device *dev);
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900574static void tc35815_tx_timeout(struct net_device *dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900575static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
576#ifdef CONFIG_NET_POLL_CONTROLLER
577static void tc35815_poll_controller(struct net_device *dev);
578#endif
579static const struct ethtool_ops tc35815_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900581/* Example routines you must write ;->. */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900582static void tc35815_chip_reset(struct net_device *dev);
583static void tc35815_chip_init(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900585#ifdef DEBUG
586static void panic_queues(struct net_device *dev);
587#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900589static void tc35815_restart_work(struct work_struct *work);
590
591static int tc_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
592{
593 struct net_device *dev = bus->priv;
594 struct tc35815_regs __iomem *tr =
595 (struct tc35815_regs __iomem *)dev->base_addr;
596 unsigned long timeout = jiffies + 10;
597
598 tc_writel(MD_CA_Busy | (mii_id << 5) | (regnum & 0x1f), &tr->MD_CA);
599 while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
600 if (time_after(jiffies, timeout))
601 return -EIO;
602 cpu_relax();
603 }
604 return tc_readl(&tr->MD_Data) & 0xffff;
605}
606
607static int tc_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 val)
608{
609 struct net_device *dev = bus->priv;
610 struct tc35815_regs __iomem *tr =
611 (struct tc35815_regs __iomem *)dev->base_addr;
612 unsigned long timeout = jiffies + 10;
613
614 tc_writel(val, &tr->MD_Data);
615 tc_writel(MD_CA_Busy | MD_CA_Wr | (mii_id << 5) | (regnum & 0x1f),
616 &tr->MD_CA);
617 while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
618 if (time_after(jiffies, timeout))
619 return -EIO;
620 cpu_relax();
621 }
622 return 0;
623}
624
625static void tc_handle_link_change(struct net_device *dev)
626{
627 struct tc35815_local *lp = netdev_priv(dev);
628 struct phy_device *phydev = lp->phy_dev;
629 unsigned long flags;
630 int status_change = 0;
631
632 spin_lock_irqsave(&lp->lock, flags);
633 if (phydev->link &&
634 (lp->speed != phydev->speed || lp->duplex != phydev->duplex)) {
635 struct tc35815_regs __iomem *tr =
636 (struct tc35815_regs __iomem *)dev->base_addr;
637 u32 reg;
638
639 reg = tc_readl(&tr->MAC_Ctl);
640 reg |= MAC_HaltReq;
641 tc_writel(reg, &tr->MAC_Ctl);
642 if (phydev->duplex == DUPLEX_FULL)
643 reg |= MAC_FullDup;
644 else
645 reg &= ~MAC_FullDup;
646 tc_writel(reg, &tr->MAC_Ctl);
647 reg &= ~MAC_HaltReq;
648 tc_writel(reg, &tr->MAC_Ctl);
649
650 /*
651 * TX4939 PCFG.SPEEDn bit will be changed on
652 * NETDEV_CHANGE event.
653 */
654
655#if !defined(NO_CHECK_CARRIER) && defined(WORKAROUND_LOSTCAR)
656 /*
657 * WORKAROUND: enable LostCrS only if half duplex
658 * operation.
659 * (TX4939 does not have EnLCarr)
660 */
661 if (phydev->duplex == DUPLEX_HALF &&
662 lp->chiptype != TC35815_TX4939)
663 tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr,
664 &tr->Tx_Ctl);
665#endif
666
667 lp->speed = phydev->speed;
668 lp->duplex = phydev->duplex;
669 status_change = 1;
670 }
671
672 if (phydev->link != lp->link) {
673 if (phydev->link) {
674#ifdef WORKAROUND_100HALF_PROMISC
675 /* delayed promiscuous enabling */
676 if (dev->flags & IFF_PROMISC)
677 tc35815_set_multicast_list(dev);
678#endif
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900679 } else {
680 lp->speed = 0;
681 lp->duplex = -1;
682 }
683 lp->link = phydev->link;
684
685 status_change = 1;
686 }
687 spin_unlock_irqrestore(&lp->lock, flags);
688
689 if (status_change && netif_msg_link(lp)) {
690 phy_print_status(phydev);
Joe Perches72903832009-05-15 07:59:42 +0000691 pr_debug("%s: MII BMCR %04x BMSR %04x LPA %04x\n",
692 dev->name,
693 phy_read(phydev, MII_BMCR),
694 phy_read(phydev, MII_BMSR),
695 phy_read(phydev, MII_LPA));
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900696 }
697}
698
699static int tc_mii_probe(struct net_device *dev)
700{
701 struct tc35815_local *lp = netdev_priv(dev);
702 struct phy_device *phydev = NULL;
703 int phy_addr;
704 u32 dropmask;
705
706 /* find the first phy */
707 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700708 if (lp->mii_bus->phy_map[phy_addr]) {
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900709 if (phydev) {
710 printk(KERN_ERR "%s: multiple PHYs found\n",
711 dev->name);
712 return -EINVAL;
713 }
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700714 phydev = lp->mii_bus->phy_map[phy_addr];
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900715 break;
716 }
717 }
718
719 if (!phydev) {
720 printk(KERN_ERR "%s: no PHY found\n", dev->name);
721 return -ENODEV;
722 }
723
724 /* attach the mac to the phy */
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800725 phydev = phy_connect(dev, dev_name(&phydev->dev),
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900726 &tc_handle_link_change, 0,
727 lp->chiptype == TC35815_TX4939 ?
728 PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII);
729 if (IS_ERR(phydev)) {
730 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
731 return PTR_ERR(phydev);
732 }
733 printk(KERN_INFO "%s: attached PHY driver [%s] "
734 "(mii_bus:phy_addr=%s, id=%x)\n",
Kay Sieversdb1d7bf2009-01-26 21:12:58 -0800735 dev->name, phydev->drv->name, dev_name(&phydev->dev),
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900736 phydev->phy_id);
737
738 /* mask with MAC supported features */
739 phydev->supported &= PHY_BASIC_FEATURES;
740 dropmask = 0;
741 if (options.speed == 10)
742 dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
743 else if (options.speed == 100)
744 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
745 if (options.duplex == 1)
746 dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full;
747 else if (options.duplex == 2)
748 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half;
749 phydev->supported &= ~dropmask;
750 phydev->advertising = phydev->supported;
751
752 lp->link = 0;
753 lp->speed = 0;
754 lp->duplex = -1;
755 lp->phy_dev = phydev;
756
757 return 0;
758}
759
760static int tc_mii_init(struct net_device *dev)
761{
762 struct tc35815_local *lp = netdev_priv(dev);
763 int err;
764 int i;
765
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700766 lp->mii_bus = mdiobus_alloc();
767 if (lp->mii_bus == NULL) {
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900768 err = -ENOMEM;
769 goto err_out;
770 }
771
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700772 lp->mii_bus->name = "tc35815_mii_bus";
773 lp->mii_bus->read = tc_mdio_read;
774 lp->mii_bus->write = tc_mdio_write;
775 snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x",
776 (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn);
777 lp->mii_bus->priv = dev;
778 lp->mii_bus->parent = &lp->pci_dev->dev;
779 lp->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
780 if (!lp->mii_bus->irq) {
781 err = -ENOMEM;
782 goto err_out_free_mii_bus;
783 }
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900784
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700785 for (i = 0; i < PHY_MAX_ADDR; i++)
786 lp->mii_bus->irq[i] = PHY_POLL;
787
788 err = mdiobus_register(lp->mii_bus);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900789 if (err)
790 goto err_out_free_mdio_irq;
791 err = tc_mii_probe(dev);
792 if (err)
793 goto err_out_unregister_bus;
794 return 0;
795
796err_out_unregister_bus:
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700797 mdiobus_unregister(lp->mii_bus);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900798err_out_free_mdio_irq:
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700799 kfree(lp->mii_bus->irq);
Adrian Bunk51cf7562008-10-12 21:01:53 -0700800err_out_free_mii_bus:
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700801 mdiobus_free(lp->mii_bus);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900802err_out:
803 return err;
804}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900806#ifdef CONFIG_CPU_TX49XX
807/*
808 * Find a platform_device providing a MAC address. The platform code
809 * should provide a "tc35815-mac" device with a MAC address in its
810 * platform_data.
811 */
812static int __devinit tc35815_mac_match(struct device *dev, void *data)
813{
814 struct platform_device *plat_dev = to_platform_device(dev);
815 struct pci_dev *pci_dev = data;
Atsushi Nemoto06675e62008-01-19 01:15:52 +0900816 unsigned int id = pci_dev->irq;
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900817 return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
818}
819
820static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
821{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +0900822 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900823 struct device *pd = bus_find_device(&platform_bus_type, NULL,
824 lp->pci_dev, tc35815_mac_match);
825 if (pd) {
826 if (pd->platform_data)
827 memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN);
828 put_device(pd);
829 return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV;
830 }
831 return -ENODEV;
832}
833#else
Yoichi Yuasa308a9062007-07-18 11:13:42 +0900834static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev)
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900835{
836 return -ENODEV;
837}
838#endif
839
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900840static int __devinit tc35815_init_dev_addr(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900842 struct tc35815_regs __iomem *tr =
843 (struct tc35815_regs __iomem *)dev->base_addr;
844 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
847 ;
848 for (i = 0; i < 6; i += 2) {
849 unsigned short data;
850 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl);
851 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
852 ;
853 data = tc_readl(&tr->PROM_Data);
854 dev->dev_addr[i] = data & 0xff;
855 dev->dev_addr[i+1] = data >> 8;
856 }
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900857 if (!is_valid_ether_addr(dev->dev_addr))
858 return tc35815_read_plat_dev_addr(dev);
859 return 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900860}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
Alexander Beregalov5a1c28b2009-04-11 07:38:54 +0000862static const struct net_device_ops tc35815_netdev_ops = {
863 .ndo_open = tc35815_open,
864 .ndo_stop = tc35815_close,
865 .ndo_start_xmit = tc35815_send_packet,
866 .ndo_get_stats = tc35815_get_stats,
867 .ndo_set_multicast_list = tc35815_set_multicast_list,
868 .ndo_tx_timeout = tc35815_tx_timeout,
869 .ndo_do_ioctl = tc35815_ioctl,
870 .ndo_validate_addr = eth_validate_addr,
871 .ndo_change_mtu = eth_change_mtu,
872 .ndo_set_mac_address = eth_mac_addr,
873#ifdef CONFIG_NET_POLL_CONTROLLER
874 .ndo_poll_controller = tc35815_poll_controller,
875#endif
876};
877
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900878static int __devinit tc35815_init_one(struct pci_dev *pdev,
879 const struct pci_device_id *ent)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900880{
881 void __iomem *ioaddr = NULL;
882 struct net_device *dev;
883 struct tc35815_local *lp;
884 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900886 static int printed_version;
887 if (!printed_version++) {
888 printk(version);
889 dev_printk(KERN_DEBUG, &pdev->dev,
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900890 "speed:%d duplex:%d\n",
891 options.speed, options.duplex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900894 if (!pdev->irq) {
895 dev_warn(&pdev->dev, "no IRQ assigned.\n");
896 return -ENODEV;
897 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900899 /* dev zeroed in alloc_etherdev */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900900 dev = alloc_etherdev(sizeof(*lp));
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900901 if (dev == NULL) {
902 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
903 return -ENOMEM;
904 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 SET_NETDEV_DEV(dev, &pdev->dev);
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +0900906 lp = netdev_priv(dev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700907 lp->dev = dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900909 /* enable device (incl. PCI PM wakeup), and bus-mastering */
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +0900910 rc = pcim_enable_device(pdev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900911 if (rc)
912 goto err_out;
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +0900913 rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900914 if (rc)
915 goto err_out;
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +0900916 pci_set_master(pdev);
917 ioaddr = pcim_iomap_table(pdev)[1];
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900918
919 /* Initialize the device structure. */
Alexander Beregalov5a1c28b2009-04-11 07:38:54 +0000920 dev->netdev_ops = &tc35815_netdev_ops;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900921 dev->ethtool_ops = &tc35815_ethtool_ops;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900922 dev->watchdog_timeo = TC35815_TX_TIMEOUT;
923#ifdef TC35815_NAPI
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700924 netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900925#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900926
927 dev->irq = pdev->irq;
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900928 dev->base_addr = (unsigned long)ioaddr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900929
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900930 INIT_WORK(&lp->restart_work, tc35815_restart_work);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900931 spin_lock_init(&lp->lock);
932 lp->pci_dev = pdev;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900933 lp->chiptype = ent->driver_data;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900934
935 lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK;
936 pci_set_drvdata(pdev, dev);
937
938 /* Soft reset the chip. */
939 tc35815_chip_reset(dev);
940
941 /* Retrieve the ethernet address. */
Atsushi Nemotobd43da82007-06-29 22:34:53 +0900942 if (tc35815_init_dev_addr(dev)) {
943 dev_warn(&pdev->dev, "not valid ether addr\n");
944 random_ether_addr(dev->dev_addr);
945 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900946
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900947 rc = register_netdev(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900948 if (rc)
Atsushi Nemoto22adf7e2008-04-11 00:24:45 +0900949 goto err_out;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900950
951 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
Johannes Berge1749612008-10-27 15:59:26 -0700952 printk(KERN_INFO "%s: %s at 0x%lx, %pM, IRQ %d\n",
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900953 dev->name,
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900954 chip_info[ent->driver_data].name,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900955 dev->base_addr,
Johannes Berge1749612008-10-27 15:59:26 -0700956 dev->dev_addr,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900957 dev->irq);
958
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900959 rc = tc_mii_init(dev);
960 if (rc)
961 goto err_out_unregister;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
963 return 0;
964
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900965err_out_unregister:
966 unregister_netdev(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967err_out:
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900968 free_netdev(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900969 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970}
971
972
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900973static void __devexit tc35815_remove_one(struct pci_dev *pdev)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900974{
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900975 struct net_device *dev = pci_get_drvdata(pdev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900976 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900977
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +0900978 phy_disconnect(lp->phy_dev);
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700979 mdiobus_unregister(lp->mii_bus);
980 kfree(lp->mii_bus->irq);
981 mdiobus_free(lp->mii_bus);
Atsushi Nemoto7f225b42008-04-11 00:25:31 +0900982 unregister_netdev(dev);
983 free_netdev(dev);
984 pci_set_drvdata(pdev, NULL);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900985}
986
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987static int
988tc35815_init_queues(struct net_device *dev)
989{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +0900990 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 int i;
992 unsigned long fd_addr;
993
994 if (!lp->fd_buf) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +0900995 BUG_ON(sizeof(struct FDesc) +
996 sizeof(struct BDesc) * RX_BUF_NUM +
997 sizeof(struct FDesc) * RX_FD_NUM +
998 sizeof(struct TxFD) * TX_FD_NUM >
999 PAGE_SIZE * FD_PAGE_NUM);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001001 lp->fd_buf = pci_alloc_consistent(lp->pci_dev,
1002 PAGE_SIZE * FD_PAGE_NUM,
1003 &lp->fd_buf_dma);
1004 if (!lp->fd_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 return -ENOMEM;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001006 for (i = 0; i < RX_BUF_NUM; i++) {
1007#ifdef TC35815_USE_PACKEDBUFFER
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001008 lp->data_buf[i] =
1009 alloc_rxbuf_page(lp->pci_dev,
1010 &lp->data_buf_dma[i]);
1011 if (!lp->data_buf[i]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 while (--i >= 0) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001013 free_rxbuf_page(lp->pci_dev,
1014 lp->data_buf[i],
1015 lp->data_buf_dma[i]);
1016 lp->data_buf[i] = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001018 pci_free_consistent(lp->pci_dev,
1019 PAGE_SIZE * FD_PAGE_NUM,
1020 lp->fd_buf,
1021 lp->fd_buf_dma);
1022 lp->fd_buf = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 return -ENOMEM;
1024 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001025#else
1026 lp->rx_skbs[i].skb =
1027 alloc_rxbuf_skb(dev, lp->pci_dev,
1028 &lp->rx_skbs[i].skb_dma);
1029 if (!lp->rx_skbs[i].skb) {
1030 while (--i >= 0) {
1031 free_rxbuf_skb(lp->pci_dev,
1032 lp->rx_skbs[i].skb,
1033 lp->rx_skbs[i].skb_dma);
1034 lp->rx_skbs[i].skb = NULL;
1035 }
1036 pci_free_consistent(lp->pci_dev,
1037 PAGE_SIZE * FD_PAGE_NUM,
1038 lp->fd_buf,
1039 lp->fd_buf_dma);
1040 lp->fd_buf = NULL;
1041 return -ENOMEM;
1042 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043#endif
1044 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001045 printk(KERN_DEBUG "%s: FD buf %p DataBuf",
1046 dev->name, lp->fd_buf);
1047#ifdef TC35815_USE_PACKEDBUFFER
1048 printk(" DataBuf");
1049 for (i = 0; i < RX_BUF_NUM; i++)
1050 printk(" %p", lp->data_buf[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001052 printk("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 } else {
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001054 for (i = 0; i < FD_PAGE_NUM; i++)
1055 clear_page((void *)((unsigned long)lp->fd_buf +
1056 i * PAGE_SIZE));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 fd_addr = (unsigned long)lp->fd_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059
1060 /* Free Descriptors (for Receive) */
1061 lp->rfd_base = (struct RxFD *)fd_addr;
1062 fd_addr += sizeof(struct RxFD) * RX_FD_NUM;
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001063 for (i = 0; i < RX_FD_NUM; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 lp->rfd_cur = lp->rfd_base;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001066 lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067
1068 /* Transmit Descriptors */
1069 lp->tfd_base = (struct TxFD *)fd_addr;
1070 fd_addr += sizeof(struct TxFD) * TX_FD_NUM;
1071 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001072 lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1]));
1073 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0);
1075 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001076 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 -07001077 lp->tfd_start = 0;
1078 lp->tfd_end = 0;
1079
1080 /* Buffer List (for Receive) */
1081 lp->fbl_ptr = (struct FrFD *)fd_addr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001082 lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr));
1083 lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD);
1084#ifndef TC35815_USE_PACKEDBUFFER
1085 /*
1086 * move all allocated skbs to head of rx_skbs[] array.
1087 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
1088 * tc35815_rx() had failed.
1089 */
1090 lp->fbl_count = 0;
1091 for (i = 0; i < RX_BUF_NUM; i++) {
1092 if (lp->rx_skbs[i].skb) {
1093 if (i != lp->fbl_count) {
1094 lp->rx_skbs[lp->fbl_count].skb =
1095 lp->rx_skbs[i].skb;
1096 lp->rx_skbs[lp->fbl_count].skb_dma =
1097 lp->rx_skbs[i].skb_dma;
1098 }
1099 lp->fbl_count++;
1100 }
1101 }
1102#endif
1103 for (i = 0; i < RX_BUF_NUM; i++) {
1104#ifdef TC35815_USE_PACKEDBUFFER
1105 lp->fbl_ptr->bd[i].BuffData = cpu_to_le32(lp->data_buf_dma[i]);
1106#else
1107 if (i >= lp->fbl_count) {
1108 lp->fbl_ptr->bd[i].BuffData = 0;
1109 lp->fbl_ptr->bd[i].BDCtl = 0;
1110 continue;
1111 }
1112 lp->fbl_ptr->bd[i].BuffData =
1113 cpu_to_le32(lp->rx_skbs[i].skb_dma);
1114#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 /* BDID is index of FrFD.bd[] */
1116 lp->fbl_ptr->bd[i].BDCtl =
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001117 cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) |
1118 RX_BUF_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001120#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 lp->fbl_curid = 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001122#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001124 printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n",
1125 dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 return 0;
1127}
1128
1129static void
1130tc35815_clear_queues(struct net_device *dev)
1131{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001132 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 int i;
1134
1135 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001136 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
1137 struct sk_buff *skb =
1138 fdsystem != 0xffffffff ?
1139 lp->tx_skbs[fdsystem].skb : NULL;
1140#ifdef DEBUG
1141 if (lp->tx_skbs[i].skb != skb) {
1142 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
1143 panic_queues(dev);
1144 }
1145#else
1146 BUG_ON(lp->tx_skbs[i].skb != skb);
1147#endif
1148 if (skb) {
1149 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
1150 lp->tx_skbs[i].skb = NULL;
1151 lp->tx_skbs[i].skb_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 dev_kfree_skb_any(skb);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001153 }
1154 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 }
1156
1157 tc35815_init_queues(dev);
1158}
1159
1160static void
1161tc35815_free_queues(struct net_device *dev)
1162{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001163 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 int i;
1165
1166 if (lp->tfd_base) {
1167 for (i = 0; i < TX_FD_NUM; i++) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001168 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
1169 struct sk_buff *skb =
1170 fdsystem != 0xffffffff ?
1171 lp->tx_skbs[fdsystem].skb : NULL;
1172#ifdef DEBUG
1173 if (lp->tx_skbs[i].skb != skb) {
1174 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
1175 panic_queues(dev);
1176 }
1177#else
1178 BUG_ON(lp->tx_skbs[i].skb != skb);
1179#endif
1180 if (skb) {
1181 dev_kfree_skb(skb);
1182 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
1183 lp->tx_skbs[i].skb = NULL;
1184 lp->tx_skbs[i].skb_dma = 0;
1185 }
1186 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 }
1188 }
1189
1190 lp->rfd_base = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 lp->rfd_limit = NULL;
1192 lp->rfd_cur = NULL;
1193 lp->fbl_ptr = NULL;
1194
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001195 for (i = 0; i < RX_BUF_NUM; i++) {
1196#ifdef TC35815_USE_PACKEDBUFFER
1197 if (lp->data_buf[i]) {
1198 free_rxbuf_page(lp->pci_dev,
1199 lp->data_buf[i], lp->data_buf_dma[i]);
1200 lp->data_buf[i] = NULL;
1201 }
1202#else
1203 if (lp->rx_skbs[i].skb) {
1204 free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb,
1205 lp->rx_skbs[i].skb_dma);
1206 lp->rx_skbs[i].skb = NULL;
1207 }
1208#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001210 if (lp->fd_buf) {
1211 pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM,
1212 lp->fd_buf, lp->fd_buf_dma);
1213 lp->fd_buf = NULL;
1214 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215}
1216
1217static void
1218dump_txfd(struct TxFD *fd)
1219{
1220 printk("TxFD(%p): %08x %08x %08x %08x\n", fd,
1221 le32_to_cpu(fd->fd.FDNext),
1222 le32_to_cpu(fd->fd.FDSystem),
1223 le32_to_cpu(fd->fd.FDStat),
1224 le32_to_cpu(fd->fd.FDCtl));
1225 printk("BD: ");
1226 printk(" %08x %08x",
1227 le32_to_cpu(fd->bd.BuffData),
1228 le32_to_cpu(fd->bd.BDCtl));
1229 printk("\n");
1230}
1231
1232static int
1233dump_rxfd(struct RxFD *fd)
1234{
1235 int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1236 if (bd_count > 8)
1237 bd_count = 8;
1238 printk("RxFD(%p): %08x %08x %08x %08x\n", fd,
1239 le32_to_cpu(fd->fd.FDNext),
1240 le32_to_cpu(fd->fd.FDSystem),
1241 le32_to_cpu(fd->fd.FDStat),
1242 le32_to_cpu(fd->fd.FDCtl));
1243 if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD)
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001244 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 printk("BD: ");
1246 for (i = 0; i < bd_count; i++)
1247 printk(" %08x %08x",
1248 le32_to_cpu(fd->bd[i].BuffData),
1249 le32_to_cpu(fd->bd[i].BDCtl));
1250 printk("\n");
1251 return bd_count;
1252}
1253
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001254#if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255static void
1256dump_frfd(struct FrFD *fd)
1257{
1258 int i;
1259 printk("FrFD(%p): %08x %08x %08x %08x\n", fd,
1260 le32_to_cpu(fd->fd.FDNext),
1261 le32_to_cpu(fd->fd.FDSystem),
1262 le32_to_cpu(fd->fd.FDStat),
1263 le32_to_cpu(fd->fd.FDCtl));
1264 printk("BD: ");
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001265 for (i = 0; i < RX_BUF_NUM; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 printk(" %08x %08x",
1267 le32_to_cpu(fd->bd[i].BuffData),
1268 le32_to_cpu(fd->bd[i].BDCtl));
1269 printk("\n");
1270}
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001271#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001273#ifdef DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274static void
1275panic_queues(struct net_device *dev)
1276{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001277 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 int i;
1279
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001280 printk("TxFD base %p, start %u, end %u\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 lp->tfd_base, lp->tfd_start, lp->tfd_end);
1282 printk("RxFD base %p limit %p cur %p\n",
1283 lp->rfd_base, lp->rfd_limit, lp->rfd_cur);
1284 printk("FrFD %p\n", lp->fbl_ptr);
1285 for (i = 0; i < TX_FD_NUM; i++)
1286 dump_txfd(&lp->tfd_base[i]);
1287 for (i = 0; i < RX_FD_NUM; i++) {
1288 int bd_count = dump_rxfd(&lp->rfd_base[i]);
1289 i += (bd_count + 1) / 2; /* skip BDs */
1290 }
1291 dump_frfd(lp->fbl_ptr);
1292 panic("%s: Illegal queue state.", dev->name);
1293}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294#endif
1295
Atsushi Nemoto958eb802008-04-11 00:24:24 +09001296static void print_eth(const u8 *add)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297{
Atsushi Nemoto958eb802008-04-11 00:24:24 +09001298 printk(KERN_DEBUG "print_eth(%p)\n", add);
Johannes Berge1749612008-10-27 15:59:26 -07001299 printk(KERN_DEBUG " %pM => %pM : %02x%02x\n",
1300 add + 6, add, add[12], add[13]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301}
1302
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001303static int tc35815_tx_full(struct net_device *dev)
1304{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001305 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001306 return ((lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end);
1307}
1308
1309static void tc35815_restart(struct net_device *dev)
1310{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001311 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001312
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001313 if (lp->phy_dev) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001314 int timeout;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001315
1316 phy_write(lp->phy_dev, MII_BMCR, BMCR_RESET);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001317 timeout = 100;
1318 while (--timeout) {
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001319 if (!(phy_read(lp->phy_dev, MII_BMCR) & BMCR_RESET))
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001320 break;
1321 udelay(1);
1322 }
1323 if (!timeout)
1324 printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name);
1325 }
1326
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001327 spin_lock_irq(&lp->lock);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001328 tc35815_chip_reset(dev);
1329 tc35815_clear_queues(dev);
1330 tc35815_chip_init(dev);
1331 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1332 tc35815_set_multicast_list(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001333 spin_unlock_irq(&lp->lock);
1334
1335 netif_wake_queue(dev);
1336}
1337
1338static void tc35815_restart_work(struct work_struct *work)
1339{
1340 struct tc35815_local *lp =
1341 container_of(work, struct tc35815_local, restart_work);
1342 struct net_device *dev = lp->dev;
1343
1344 tc35815_restart(dev);
1345}
1346
1347static void tc35815_schedule_restart(struct net_device *dev)
1348{
1349 struct tc35815_local *lp = netdev_priv(dev);
1350 struct tc35815_regs __iomem *tr =
1351 (struct tc35815_regs __iomem *)dev->base_addr;
1352
1353 /* disable interrupts */
1354 tc_writel(0, &tr->Int_En);
1355 tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl);
1356 schedule_work(&lp->restart_work);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001357}
1358
1359static void tc35815_tx_timeout(struct net_device *dev)
1360{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001361 struct tc35815_regs __iomem *tr =
1362 (struct tc35815_regs __iomem *)dev->base_addr;
1363
1364 printk(KERN_WARNING "%s: transmit timed out, status %#x\n",
1365 dev->name, tc_readl(&tr->Tx_Stat));
1366
1367 /* Try to restart the adaptor. */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001368 tc35815_schedule_restart(dev);
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001369 dev->stats.tx_errors++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001370}
1371
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372/*
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001373 * Open/initialize the controller. This is called (in the current kernel)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374 * sometime after booting when the 'ifconfig' program is run.
1375 *
1376 * This routine should set everything up anew at each open, even
1377 * registers that "should" only need to be set once at boot, so that
1378 * there is non-reboot way to recover if something goes wrong.
1379 */
1380static int
1381tc35815_open(struct net_device *dev)
1382{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001383 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001384
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 /*
1386 * This is used if the interrupt line can turned off (shared).
1387 * See 3c503.c for an example of selecting the IRQ at config-time.
1388 */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09001389 if (request_irq(dev->irq, &tc35815_interrupt, IRQF_SHARED,
1390 dev->name, dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392
1393 tc35815_chip_reset(dev);
1394
1395 if (tc35815_init_queues(dev) != 0) {
1396 free_irq(dev->irq, dev);
1397 return -EAGAIN;
1398 }
1399
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001400#ifdef TC35815_NAPI
1401 napi_enable(&lp->napi);
1402#endif
1403
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404 /* Reset the hardware here. Don't forget to set the station address. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001405 spin_lock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 tc35815_chip_init(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001407 spin_unlock_irq(&lp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408
Atsushi Nemoto59524a32008-06-25 11:41:01 +09001409 netif_carrier_off(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001410 /* schedule a link state check */
1411 phy_start(lp->phy_dev);
1412
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001413 /* We are now ready to accept transmit requeusts from
1414 * the queueing layer of the networking.
1415 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 netif_start_queue(dev);
1417
1418 return 0;
1419}
1420
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001421/* This will only be invoked if your driver is _not_ in XOFF state.
1422 * What this means is that you need not check it, and that this
1423 * invariant will hold if you make sure that the netif_*_queue()
1424 * calls are done at the proper times.
1425 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
1427{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001428 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001429 struct TxFD *txfd;
1430 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001432 /* If some error occurs while trying to transmit this
1433 * packet, you should return '1' from this function.
1434 * In such a case you _may not_ do anything to the
1435 * SKB, it is still owned by the network queueing
1436 * layer when an error is returned. This means you
1437 * may not modify any SKB fields, you may not free
1438 * the SKB, etc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001441 /* This is the most common case for modern hardware.
1442 * The spinlock protects this code from the TX complete
1443 * hardware interrupt handler. Queue flow control is
1444 * thus managed under this lock as well.
1445 */
1446 spin_lock_irqsave(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001448 /* failsafe... (handle txdone now if half of FDs are used) */
1449 if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM >
1450 TX_FD_NUM / 2)
1451 tc35815_txdone(dev);
1452
1453 if (netif_msg_pktdata(lp))
1454 print_eth(skb->data);
1455#ifdef DEBUG
1456 if (lp->tx_skbs[lp->tfd_start].skb) {
1457 printk("%s: tx_skbs conflict.\n", dev->name);
1458 panic_queues(dev);
1459 }
1460#else
1461 BUG_ON(lp->tx_skbs[lp->tfd_start].skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001463 lp->tx_skbs[lp->tfd_start].skb = skb;
1464 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 -07001465
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001466 /*add to ring */
1467 txfd = &lp->tfd_base[lp->tfd_start];
1468 txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma);
1469 txfd->bd.BDCtl = cpu_to_le32(skb->len);
1470 txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start);
1471 txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001473 if (lp->tfd_start == lp->tfd_end) {
1474 struct tc35815_regs __iomem *tr =
1475 (struct tc35815_regs __iomem *)dev->base_addr;
1476 /* Start DMA Transmitter. */
1477 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478#ifdef GATHER_TXINT
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001479 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001481 if (netif_msg_tx_queued(lp)) {
1482 printk("%s: starting TxFD.\n", dev->name);
1483 dump_txfd(txfd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001485 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1486 } else {
1487 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL);
1488 if (netif_msg_tx_queued(lp)) {
1489 printk("%s: queueing TxFD.\n", dev->name);
1490 dump_txfd(txfd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001492 }
1493 lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
1494
1495 dev->trans_start = jiffies;
1496
1497 /* If we just used up the very last entry in the
1498 * TX ring on this device, tell the queueing
1499 * layer to send no more.
1500 */
1501 if (tc35815_tx_full(dev)) {
1502 if (netif_msg_tx_queued(lp))
1503 printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name);
1504 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505 }
1506
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001507 /* When the TX completion hw interrupt arrives, this
1508 * is when the transmit statistics are updated.
1509 */
1510
1511 spin_unlock_irqrestore(&lp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001512 return 0;
1513}
1514
1515#define FATAL_ERROR_INT \
1516 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001517static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518{
1519 static int count;
1520 printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):",
1521 dev->name, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522 if (status & Int_IntPCI)
1523 printk(" IntPCI");
1524 if (status & Int_DmParErr)
1525 printk(" DmParErr");
1526 if (status & Int_IntNRAbt)
1527 printk(" IntNRAbt");
1528 printk("\n");
1529 if (count++ > 100)
1530 panic("%s: Too many fatal errors.", dev->name);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001531 printk(KERN_WARNING "%s: Resetting ...\n", dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 /* Try to restart the adaptor. */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001533 tc35815_schedule_restart(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001534}
1535
1536#ifdef TC35815_NAPI
1537static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit)
1538#else
1539static int tc35815_do_interrupt(struct net_device *dev, u32 status)
1540#endif
1541{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001542 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001543 struct tc35815_regs __iomem *tr =
1544 (struct tc35815_regs __iomem *)dev->base_addr;
1545 int ret = -1;
1546
1547 /* Fatal errors... */
1548 if (status & FATAL_ERROR_INT) {
1549 tc35815_fatal_error_interrupt(dev, status);
1550 return 0;
1551 }
1552 /* recoverable errors */
1553 if (status & Int_IntFDAEx) {
1554 /* disable FDAEx int. (until we make rooms...) */
1555 tc_writel(tc_readl(&tr->Int_En) & ~Int_FDAExEn, &tr->Int_En);
1556 printk(KERN_WARNING
1557 "%s: Free Descriptor Area Exhausted (%#x).\n",
1558 dev->name, status);
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001559 dev->stats.rx_dropped++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001560 ret = 0;
1561 }
1562 if (status & Int_IntBLEx) {
1563 /* disable BLEx int. (until we make rooms...) */
1564 tc_writel(tc_readl(&tr->Int_En) & ~Int_BLExEn, &tr->Int_En);
1565 printk(KERN_WARNING
1566 "%s: Buffer List Exhausted (%#x).\n",
1567 dev->name, status);
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001568 dev->stats.rx_dropped++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001569 ret = 0;
1570 }
1571 if (status & Int_IntExBD) {
1572 printk(KERN_WARNING
1573 "%s: Excessive Buffer Descriptiors (%#x).\n",
1574 dev->name, status);
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001575 dev->stats.rx_length_errors++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001576 ret = 0;
1577 }
1578
1579 /* normal notification */
1580 if (status & Int_IntMacRx) {
1581 /* Got a packet(s). */
1582#ifdef TC35815_NAPI
1583 ret = tc35815_rx(dev, limit);
1584#else
1585 tc35815_rx(dev);
1586 ret = 0;
1587#endif
1588 lp->lstats.rx_ints++;
1589 }
1590 if (status & Int_IntMacTx) {
1591 /* Transmit complete. */
1592 lp->lstats.tx_ints++;
1593 tc35815_txdone(dev);
1594 netif_wake_queue(dev);
1595 ret = 0;
1596 }
1597 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598}
1599
1600/*
1601 * The typical workload of the driver:
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001602 * Handle the network interface interrupts.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001603 */
David Howells7d12e782006-10-05 14:55:46 +01001604static irqreturn_t tc35815_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605{
1606 struct net_device *dev = dev_id;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001607 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001608 struct tc35815_regs __iomem *tr =
1609 (struct tc35815_regs __iomem *)dev->base_addr;
1610#ifdef TC35815_NAPI
1611 u32 dmactl = tc_readl(&tr->DMA_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001613 if (!(dmactl & DMA_IntMask)) {
1614 /* disable interrupts */
1615 tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl);
Ben Hutchings288379f2009-01-19 16:43:59 -08001616 if (napi_schedule_prep(&lp->napi))
1617 __napi_schedule(&lp->napi);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001618 else {
1619 printk(KERN_ERR "%s: interrupt taken in poll\n",
1620 dev->name);
1621 BUG();
1622 }
1623 (void)tc_readl(&tr->Int_Src); /* flush */
1624 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001626 return IRQ_NONE;
1627#else
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001628 int handled;
1629 u32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001630
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001631 spin_lock(&lp->lock);
1632 status = tc_readl(&tr->Int_Src);
1633 tc_writel(status, &tr->Int_Src); /* write to clear */
1634 handled = tc35815_do_interrupt(dev, status);
1635 (void)tc_readl(&tr->Int_Src); /* flush */
1636 spin_unlock(&lp->lock);
1637 return IRQ_RETVAL(handled >= 0);
1638#endif /* TC35815_NAPI */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639}
1640
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001641#ifdef CONFIG_NET_POLL_CONTROLLER
1642static void tc35815_poll_controller(struct net_device *dev)
1643{
1644 disable_irq(dev->irq);
1645 tc35815_interrupt(dev->irq, dev);
1646 enable_irq(dev->irq);
1647}
1648#endif
1649
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650/* We have a good packet(s), get it/them out of the buffers. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001651#ifdef TC35815_NAPI
1652static int
1653tc35815_rx(struct net_device *dev, int limit)
1654#else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655static void
1656tc35815_rx(struct net_device *dev)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001657#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001659 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660 unsigned int fdctl;
1661 int i;
1662 int buf_free_count = 0;
1663 int fd_free_count = 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001664#ifdef TC35815_NAPI
1665 int received = 0;
1666#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667
1668 while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) {
1669 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat);
1670 int pkt_len = fdctl & FD_FDLength_MASK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001672#ifdef DEBUG
1673 struct RxFD *next_rfd;
1674#endif
1675#if (RX_CTL_CMD & Rx_StripCRC) == 0
Atsushi Nemoto82a99282008-12-11 20:58:04 -08001676 pkt_len -= ETH_FCS_LEN;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001677#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001678
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001679 if (netif_msg_rx_status(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001680 dump_rxfd(lp->rfd_cur);
1681 if (status & Rx_Good) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001682 struct sk_buff *skb;
1683 unsigned char *data;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001684 int cur_bd;
1685#ifdef TC35815_USE_PACKEDBUFFER
1686 int offset;
1687#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001689#ifdef TC35815_NAPI
1690 if (--limit < 0)
1691 break;
1692#endif
1693#ifdef TC35815_USE_PACKEDBUFFER
1694 BUG_ON(bd_count > 2);
Atsushi Nemoto82a99282008-12-11 20:58:04 -08001695 skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696 if (skb == NULL) {
1697 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
1698 dev->name);
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001699 dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700 break;
1701 }
Atsushi Nemoto82a99282008-12-11 20:58:04 -08001702 skb_reserve(skb, NET_IP_ALIGN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703
1704 data = skb_put(skb, pkt_len);
1705
1706 /* copy from receive buffer */
1707 cur_bd = 0;
1708 offset = 0;
1709 while (offset < pkt_len && cur_bd < bd_count) {
1710 int len = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BDCtl) &
1711 BD_BuffLength_MASK;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001712 dma_addr_t dma = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BuffData);
1713 void *rxbuf = rxbuf_bus_to_virt(lp, dma);
1714 if (offset + len > pkt_len)
1715 len = pkt_len - offset;
1716#ifdef TC35815_DMA_SYNC_ONDEMAND
1717 pci_dma_sync_single_for_cpu(lp->pci_dev,
1718 dma, len,
1719 PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720#endif
1721 memcpy(data + offset, rxbuf, len);
Atsushi Nemoto793bc0a2007-03-14 01:02:20 +09001722#ifdef TC35815_DMA_SYNC_ONDEMAND
1723 pci_dma_sync_single_for_device(lp->pci_dev,
1724 dma, len,
1725 PCI_DMA_FROMDEVICE);
1726#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727 offset += len;
1728 cur_bd++;
1729 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001730#else /* TC35815_USE_PACKEDBUFFER */
1731 BUG_ON(bd_count > 1);
1732 cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl)
1733 & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1734#ifdef DEBUG
1735 if (cur_bd >= RX_BUF_NUM) {
1736 printk("%s: invalid BDID.\n", dev->name);
1737 panic_queues(dev);
1738 }
1739 BUG_ON(lp->rx_skbs[cur_bd].skb_dma !=
1740 (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3));
1741 if (!lp->rx_skbs[cur_bd].skb) {
1742 printk("%s: NULL skb.\n", dev->name);
1743 panic_queues(dev);
1744 }
1745#else
1746 BUG_ON(cur_bd >= RX_BUF_NUM);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001748 skb = lp->rx_skbs[cur_bd].skb;
1749 prefetch(skb->data);
1750 lp->rx_skbs[cur_bd].skb = NULL;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001751 pci_unmap_single(lp->pci_dev,
1752 lp->rx_skbs[cur_bd].skb_dma,
1753 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Atsushi Nemoto82a99282008-12-11 20:58:04 -08001754 if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN)
1755 memmove(skb->data, skb->data - NET_IP_ALIGN,
1756 pkt_len);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001757 data = skb_put(skb, pkt_len);
1758#endif /* TC35815_USE_PACKEDBUFFER */
1759 if (netif_msg_pktdata(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 print_eth(data);
1761 skb->protocol = eth_type_trans(skb, dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001762#ifdef TC35815_NAPI
1763 netif_receive_skb(skb);
1764 received++;
1765#else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766 netif_rx(skb);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001767#endif
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001768 dev->stats.rx_packets++;
1769 dev->stats.rx_bytes += pkt_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770 } else {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001771 dev->stats.rx_errors++;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001772 printk(KERN_DEBUG "%s: Rx error (status %x)\n",
1773 dev->name, status & Rx_Stat_Mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001774 /* WORKAROUND: LongErr and CRCErr means Overflow. */
1775 if ((status & Rx_LongErr) && (status & Rx_CRCErr)) {
1776 status &= ~(Rx_LongErr|Rx_CRCErr);
1777 status |= Rx_Over;
1778 }
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001779 if (status & Rx_LongErr)
1780 dev->stats.rx_length_errors++;
1781 if (status & Rx_Over)
1782 dev->stats.rx_fifo_errors++;
1783 if (status & Rx_CRCErr)
1784 dev->stats.rx_crc_errors++;
1785 if (status & Rx_Align)
1786 dev->stats.rx_frame_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787 }
1788
1789 if (bd_count > 0) {
1790 /* put Free Buffer back to controller */
1791 int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl);
1792 unsigned char id =
1793 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001794#ifdef DEBUG
1795 if (id >= RX_BUF_NUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796 printk("%s: invalid BDID.\n", dev->name);
1797 panic_queues(dev);
1798 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001799#else
1800 BUG_ON(id >= RX_BUF_NUM);
1801#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 /* free old buffers */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001803#ifdef TC35815_USE_PACKEDBUFFER
1804 while (lp->fbl_curid != id)
1805#else
Atsushi Nemotoccc57aa2008-06-26 17:14:15 +09001806 lp->fbl_count--;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001807 while (lp->fbl_count < RX_BUF_NUM)
1808#endif
1809 {
1810#ifdef TC35815_USE_PACKEDBUFFER
1811 unsigned char curid = lp->fbl_curid;
1812#else
1813 unsigned char curid =
1814 (id + 1 + lp->fbl_count) % RX_BUF_NUM;
1815#endif
1816 struct BDesc *bd = &lp->fbl_ptr->bd[curid];
1817#ifdef DEBUG
1818 bdctl = le32_to_cpu(bd->BDCtl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819 if (bdctl & BD_CownsBD) {
1820 printk("%s: Freeing invalid BD.\n",
1821 dev->name);
1822 panic_queues(dev);
1823 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001824#endif
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001825 /* pass BD to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001826#ifndef TC35815_USE_PACKEDBUFFER
1827 if (!lp->rx_skbs[curid].skb) {
1828 lp->rx_skbs[curid].skb =
1829 alloc_rxbuf_skb(dev,
1830 lp->pci_dev,
1831 &lp->rx_skbs[curid].skb_dma);
1832 if (!lp->rx_skbs[curid].skb)
1833 break; /* try on next reception */
1834 bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma);
1835 }
1836#endif /* TC35815_USE_PACKEDBUFFER */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001837 /* Note: BDLength was modified by chip. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001838 bd->BDCtl = cpu_to_le32(BD_CownsBD |
1839 (curid << BD_RxBDID_SHIFT) |
1840 RX_BUF_SIZE);
1841#ifdef TC35815_USE_PACKEDBUFFER
1842 lp->fbl_curid = (curid + 1) % RX_BUF_NUM;
1843 if (netif_msg_rx_status(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844 printk("%s: Entering new FBD %d\n",
1845 dev->name, lp->fbl_curid);
1846 dump_frfd(lp->fbl_ptr);
1847 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001848#else
1849 lp->fbl_count++;
1850#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851 buf_free_count++;
1852 }
1853 }
1854
1855 /* put RxFD back to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001856#ifdef DEBUG
1857 next_rfd = fd_bus_to_virt(lp,
1858 le32_to_cpu(lp->rfd_cur->fd.FDNext));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001859 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) {
1860 printk("%s: RxFD FDNext invalid.\n", dev->name);
1861 panic_queues(dev);
1862 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001863#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001864 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) {
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001865 /* pass FD to controller */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001866#ifdef DEBUG
1867 lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead);
1868#else
1869 lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL);
1870#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871 lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD);
1872 lp->rfd_cur++;
1873 fd_free_count++;
1874 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001875 if (lp->rfd_cur > lp->rfd_limit)
1876 lp->rfd_cur = lp->rfd_base;
1877#ifdef DEBUG
1878 if (lp->rfd_cur != next_rfd)
1879 printk("rfd_cur = %p, next_rfd %p\n",
1880 lp->rfd_cur, next_rfd);
1881#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 }
1883
1884 /* re-enable BL/FDA Exhaust interrupts. */
1885 if (fd_free_count) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001886 struct tc35815_regs __iomem *tr =
1887 (struct tc35815_regs __iomem *)dev->base_addr;
1888 u32 en, en_old = tc_readl(&tr->Int_En);
1889 en = en_old | Int_FDAExEn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890 if (buf_free_count)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001891 en |= Int_BLExEn;
1892 if (en != en_old)
1893 tc_writel(en, &tr->Int_En);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001894 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001895#ifdef TC35815_NAPI
1896 return received;
1897#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898}
1899
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001900#ifdef TC35815_NAPI
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001901static int tc35815_poll(struct napi_struct *napi, int budget)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001902{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001903 struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi);
1904 struct net_device *dev = lp->dev;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001905 struct tc35815_regs __iomem *tr =
1906 (struct tc35815_regs __iomem *)dev->base_addr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001907 int received = 0, handled;
1908 u32 status;
1909
1910 spin_lock(&lp->lock);
1911 status = tc_readl(&tr->Int_Src);
1912 do {
1913 tc_writel(status, &tr->Int_Src); /* write to clear */
1914
Atsushi Nemotoa2c465d2009-04-02 01:17:36 -07001915 handled = tc35815_do_interrupt(dev, status, budget - received);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001916 if (handled >= 0) {
1917 received += handled;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001918 if (received >= budget)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001919 break;
1920 }
1921 status = tc_readl(&tr->Int_Src);
1922 } while (status);
1923 spin_unlock(&lp->lock);
1924
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001925 if (received < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001926 napi_complete(napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001927 /* enable interrupts */
1928 tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl);
1929 }
1930 return received;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001931}
1932#endif
1933
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934#ifdef NO_CHECK_CARRIER
1935#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1936#else
1937#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1938#endif
1939
1940static void
1941tc35815_check_tx_stat(struct net_device *dev, int status)
1942{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09001943 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001944 const char *msg = NULL;
1945
1946 /* count collisions */
1947 if (status & Tx_ExColl)
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001948 dev->stats.collisions += 16;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949 if (status & Tx_TxColl_MASK)
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001950 dev->stats.collisions += status & Tx_TxColl_MASK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001952#ifndef NO_CHECK_CARRIER
1953 /* TX4939 does not have NCarr */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001954 if (lp->chiptype == TC35815_TX4939)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955 status &= ~Tx_NCarr;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001956#ifdef WORKAROUND_LOSTCAR
1957 /* WORKAROUND: ignore LostCrS in full duplex operation */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09001958 if (!lp->link || lp->duplex == DUPLEX_FULL)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001959 status &= ~Tx_NCarr;
1960#endif
1961#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962
1963 if (!(status & TX_STA_ERR)) {
1964 /* no error. */
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001965 dev->stats.tx_packets++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966 return;
1967 }
1968
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001969 dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 if (status & Tx_ExColl) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001971 dev->stats.tx_aborted_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 msg = "Excessive Collision.";
1973 }
1974 if (status & Tx_Under) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001975 dev->stats.tx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976 msg = "Tx FIFO Underrun.";
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09001977 if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) {
1978 lp->lstats.tx_underrun++;
1979 if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) {
1980 struct tc35815_regs __iomem *tr =
1981 (struct tc35815_regs __iomem *)dev->base_addr;
1982 tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh);
1983 msg = "Tx FIFO Underrun.Change Tx threshold to max.";
1984 }
1985 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986 }
1987 if (status & Tx_Defer) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001988 dev->stats.tx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001989 msg = "Excessive Deferral.";
1990 }
1991#ifndef NO_CHECK_CARRIER
1992 if (status & Tx_NCarr) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001993 dev->stats.tx_carrier_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994 msg = "Lost Carrier Sense.";
1995 }
1996#endif
1997 if (status & Tx_LateColl) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09001998 dev->stats.tx_aborted_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999 msg = "Late Collision.";
2000 }
2001 if (status & Tx_TxPar) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002002 dev->stats.tx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003 msg = "Transmit Parity Error.";
2004 }
2005 if (status & Tx_SQErr) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002006 dev->stats.tx_heartbeat_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002007 msg = "Signal Quality Error.";
2008 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002009 if (msg && netif_msg_tx_err(lp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002010 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status);
2011}
2012
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002013/* This handles TX complete events posted by the device
2014 * via interrupts.
2015 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002016static void
2017tc35815_txdone(struct net_device *dev)
2018{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002019 struct tc35815_local *lp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002020 struct TxFD *txfd;
2021 unsigned int fdctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002022
2023 txfd = &lp->tfd_base[lp->tfd_end];
2024 while (lp->tfd_start != lp->tfd_end &&
2025 !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) {
2026 int status = le32_to_cpu(txfd->fd.FDStat);
2027 struct sk_buff *skb;
2028 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002029 u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002031 if (netif_msg_tx_done(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032 printk("%s: complete TxFD.\n", dev->name);
2033 dump_txfd(txfd);
2034 }
2035 tc35815_check_tx_stat(dev, status);
2036
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002037 skb = fdsystem != 0xffffffff ?
2038 lp->tx_skbs[fdsystem].skb : NULL;
2039#ifdef DEBUG
2040 if (lp->tx_skbs[lp->tfd_end].skb != skb) {
2041 printk("%s: tx_skbs mismatch.\n", dev->name);
2042 panic_queues(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002044#else
2045 BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb);
2046#endif
2047 if (skb) {
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002048 dev->stats.tx_bytes += skb->len;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002049 pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE);
2050 lp->tx_skbs[lp->tfd_end].skb = NULL;
2051 lp->tx_skbs[lp->tfd_end].skb_dma = 0;
2052#ifdef TC35815_NAPI
2053 dev_kfree_skb_any(skb);
2054#else
2055 dev_kfree_skb_irq(skb);
2056#endif
2057 }
2058 txfd->fd.FDSystem = cpu_to_le32(0xffffffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM;
2061 txfd = &lp->tfd_base[lp->tfd_end];
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002062#ifdef DEBUG
2063 if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064 printk("%s: TxFD FDNext invalid.\n", dev->name);
2065 panic_queues(dev);
2066 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002067#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068 if (fdnext & FD_Next_EOL) {
2069 /* DMA Transmitter has been stopping... */
2070 if (lp->tfd_end != lp->tfd_start) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002071 struct tc35815_regs __iomem *tr =
2072 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM;
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002074 struct TxFD *txhead = &lp->tfd_base[head];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 int qlen = (lp->tfd_start + TX_FD_NUM
2076 - lp->tfd_end) % TX_FD_NUM;
2077
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002078#ifdef DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) {
2080 printk("%s: TxFD FDCtl invalid.\n", dev->name);
2081 panic_queues(dev);
2082 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002083#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 /* log max queue length */
2085 if (lp->lstats.max_tx_qlen < qlen)
2086 lp->lstats.max_tx_qlen = qlen;
2087
2088
2089 /* start DMA Transmitter again */
2090 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
2091#ifdef GATHER_TXINT
2092 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
2093#endif
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002094 if (netif_msg_tx_queued(lp)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002095 printk("%s: start TxFD on queue.\n",
2096 dev->name);
2097 dump_txfd(txfd);
2098 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002099 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100 }
2101 break;
2102 }
2103 }
2104
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002105 /* If we had stopped the queue due to a "tx full"
2106 * condition, and space has now been made available,
2107 * wake up the queue.
2108 */
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002109 if (netif_queue_stopped(dev) && !tc35815_tx_full(dev))
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002110 netif_wake_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111}
2112
2113/* The inverse routine to tc35815_open(). */
2114static int
2115tc35815_close(struct net_device *dev)
2116{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002117 struct tc35815_local *lp = netdev_priv(dev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002118
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119 netif_stop_queue(dev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002120#ifdef TC35815_NAPI
2121 napi_disable(&lp->napi);
2122#endif
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002123 if (lp->phy_dev)
2124 phy_stop(lp->phy_dev);
2125 cancel_work_sync(&lp->restart_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126
2127 /* Flush the Tx and disable Rx here. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128 tc35815_chip_reset(dev);
2129 free_irq(dev->irq, dev);
2130
2131 tc35815_free_queues(dev);
2132
2133 return 0;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002134
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135}
2136
2137/*
2138 * Get the current statistics.
2139 * This may be called with the card open or closed.
2140 */
2141static struct net_device_stats *tc35815_get_stats(struct net_device *dev)
2142{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002143 struct tc35815_regs __iomem *tr =
2144 (struct tc35815_regs __iomem *)dev->base_addr;
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002145 if (netif_running(dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146 /* Update the statistics from the device registers. */
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002147 dev->stats.rx_missed_errors = tc_readl(&tr->Miss_Cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148
Atsushi Nemotoc201abd92008-04-11 00:24:12 +09002149 return &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150}
2151
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002152static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002154 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002155 struct tc35815_regs __iomem *tr =
2156 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 int cam_index = index * 6;
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002158 u32 cam_data;
2159 u32 saved_addr;
Atsushi Nemoto958eb802008-04-11 00:24:24 +09002160
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161 saved_addr = tc_readl(&tr->CAM_Adr);
2162
Atsushi Nemoto958eb802008-04-11 00:24:24 +09002163 if (netif_msg_hw(lp))
Johannes Berge1749612008-10-27 15:59:26 -07002164 printk(KERN_DEBUG "%s: CAM %d: %pM\n",
2165 dev->name, index, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166 if (index & 1) {
2167 /* read modify write */
2168 tc_writel(cam_index - 2, &tr->CAM_Adr);
2169 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000;
2170 cam_data |= addr[0] << 8 | addr[1];
2171 tc_writel(cam_data, &tr->CAM_Data);
2172 /* write whole word */
2173 tc_writel(cam_index + 2, &tr->CAM_Adr);
2174 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
2175 tc_writel(cam_data, &tr->CAM_Data);
2176 } else {
2177 /* write whole word */
2178 tc_writel(cam_index, &tr->CAM_Adr);
2179 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
2180 tc_writel(cam_data, &tr->CAM_Data);
2181 /* read modify write */
2182 tc_writel(cam_index + 4, &tr->CAM_Adr);
2183 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff;
2184 cam_data |= addr[4] << 24 | (addr[5] << 16);
2185 tc_writel(cam_data, &tr->CAM_Data);
2186 }
2187
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188 tc_writel(saved_addr, &tr->CAM_Adr);
2189}
2190
2191
2192/*
2193 * Set or clear the multicast filter for this adaptor.
2194 * num_addrs == -1 Promiscuous mode, receive all packets
2195 * num_addrs == 0 Normal mode, clear multicast list
2196 * num_addrs > 0 Multicast mode, receive normal and MC packets,
2197 * and do best-effort filtering.
2198 */
2199static void
2200tc35815_set_multicast_list(struct net_device *dev)
2201{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002202 struct tc35815_regs __iomem *tr =
2203 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002205 if (dev->flags & IFF_PROMISC) {
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002206#ifdef WORKAROUND_100HALF_PROMISC
2207 /* With some (all?) 100MHalf HUB, controller will hang
2208 * if we enabled promiscuous mode before linkup... */
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002209 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002210
2211 if (!lp->link)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002212 return;
2213#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002214 /* Enable promiscuous mode */
2215 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl);
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002216 } else if ((dev->flags & IFF_ALLMULTI) ||
2217 dev->mc_count > CAM_ENTRY_MAX - 3) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002218 /* CAM 0, 1, 20 are reserved. */
2219 /* Disable promiscuous mode, use normal mode. */
2220 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl);
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002221 } else if (dev->mc_count) {
2222 struct dev_mc_list *cur_addr = dev->mc_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 int i;
2224 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE);
2225
2226 tc_writel(0, &tr->CAM_Ctl);
2227 /* Walk the address list, and load the filter */
2228 for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
2229 if (!cur_addr)
2230 break;
2231 /* entry 0,1 is reserved. */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002232 tc35815_set_cam_entry(dev, i + 2, cur_addr->dmi_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233 ena_bits |= CAM_Ena_Bit(i + 2);
2234 }
2235 tc_writel(ena_bits, &tr->CAM_Ena);
2236 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
Atsushi Nemoto7f225b42008-04-11 00:25:31 +09002237 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2239 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2240 }
2241}
2242
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002243static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002245 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002246 strcpy(info->driver, MODNAME);
2247 strcpy(info->version, DRV_VERSION);
2248 strcpy(info->bus_info, pci_name(lp->pci_dev));
2249}
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002250
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002251static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2252{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002253 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002254
2255 if (!lp->phy_dev)
2256 return -ENODEV;
2257 return phy_ethtool_gset(lp->phy_dev, cmd);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002258}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002259
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002260static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2261{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002262 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002263
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002264 if (!lp->phy_dev)
2265 return -ENODEV;
2266 return phy_ethtool_sset(lp->phy_dev, cmd);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002267}
2268
2269static u32 tc35815_get_msglevel(struct net_device *dev)
2270{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002271 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002272 return lp->msg_enable;
2273}
2274
2275static void tc35815_set_msglevel(struct net_device *dev, u32 datum)
2276{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002277 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002278 lp->msg_enable = datum;
2279}
2280
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002281static int tc35815_get_sset_count(struct net_device *dev, int sset)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002282{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002283 struct tc35815_local *lp = netdev_priv(dev);
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002284
2285 switch (sset) {
2286 case ETH_SS_STATS:
2287 return sizeof(lp->lstats) / sizeof(int);
2288 default:
2289 return -EOPNOTSUPP;
2290 }
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002291}
2292
2293static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2294{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002295 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002296 data[0] = lp->lstats.max_tx_qlen;
2297 data[1] = lp->lstats.tx_ints;
2298 data[2] = lp->lstats.rx_ints;
2299 data[3] = lp->lstats.tx_underrun;
2300}
2301
2302static struct {
2303 const char str[ETH_GSTRING_LEN];
2304} ethtool_stats_keys[] = {
2305 { "max_tx_qlen" },
2306 { "tx_ints" },
2307 { "rx_ints" },
2308 { "tx_underrun" },
2309};
2310
2311static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2312{
2313 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2314}
2315
2316static const struct ethtool_ops tc35815_ethtool_ops = {
2317 .get_drvinfo = tc35815_get_drvinfo,
2318 .get_settings = tc35815_get_settings,
2319 .set_settings = tc35815_set_settings,
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002320 .get_link = ethtool_op_get_link,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002321 .get_msglevel = tc35815_get_msglevel,
2322 .set_msglevel = tc35815_set_msglevel,
2323 .get_strings = tc35815_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002324 .get_sset_count = tc35815_get_sset_count,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002325 .get_ethtool_stats = tc35815_get_ethtool_stats,
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002326};
2327
2328static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2329{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002330 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002331
2332 if (!netif_running(dev))
2333 return -EINVAL;
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002334 if (!lp->phy_dev)
2335 return -ENODEV;
2336 return phy_mii_ioctl(lp->phy_dev, if_mii(rq), cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002337}
2338
2339static void tc35815_chip_reset(struct net_device *dev)
2340{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002341 struct tc35815_regs __iomem *tr =
2342 (struct tc35815_regs __iomem *)dev->base_addr;
2343 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344 /* reset the controller */
2345 tc_writel(MAC_Reset, &tr->MAC_Ctl);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002346 udelay(4); /* 3200ns */
2347 i = 0;
2348 while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) {
2349 if (i++ > 100) {
2350 printk(KERN_ERR "%s: MAC reset failed.\n", dev->name);
2351 break;
2352 }
2353 mdelay(1);
2354 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 tc_writel(0, &tr->MAC_Ctl);
2356
2357 /* initialize registers to default value */
2358 tc_writel(0, &tr->DMA_Ctl);
2359 tc_writel(0, &tr->TxThrsh);
2360 tc_writel(0, &tr->TxPollCtr);
2361 tc_writel(0, &tr->RxFragSize);
2362 tc_writel(0, &tr->Int_En);
2363 tc_writel(0, &tr->FDA_Bas);
2364 tc_writel(0, &tr->FDA_Lim);
2365 tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */
2366 tc_writel(0, &tr->CAM_Ctl);
2367 tc_writel(0, &tr->Tx_Ctl);
2368 tc_writel(0, &tr->Rx_Ctl);
2369 tc_writel(0, &tr->CAM_Ena);
2370 (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */
2371
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002372 /* initialize internal SRAM */
2373 tc_writel(DMA_TestMode, &tr->DMA_Ctl);
2374 for (i = 0; i < 0x1000; i += 4) {
2375 tc_writel(i, &tr->CAM_Adr);
2376 tc_writel(0, &tr->CAM_Data);
2377 }
2378 tc_writel(0, &tr->DMA_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379}
2380
2381static void tc35815_chip_init(struct net_device *dev)
2382{
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002383 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002384 struct tc35815_regs __iomem *tr =
2385 (struct tc35815_regs __iomem *)dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002386 unsigned long txctl = TX_CTL_CMD;
2387
Linus Torvalds1da177e2005-04-16 15:20:36 -07002388 /* load station address to CAM */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002389 tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002390
2391 /* Enable CAM (broadcast and unicast) */
2392 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2393 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2394
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002395 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2396 if (HAVE_DMA_RXALIGN(lp))
2397 tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl);
2398 else
2399 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl);
2400#ifdef TC35815_USE_PACKEDBUFFER
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401 tc_writel(RxFrag_EnPack | ETH_ZLEN, &tr->RxFragSize); /* Packing */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002402#else
2403 tc_writel(ETH_ZLEN, &tr->RxFragSize);
2404#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002405 tc_writel(0, &tr->TxPollCtr); /* Batch mode */
2406 tc_writel(TX_THRESHOLD, &tr->TxThrsh);
2407 tc_writel(INT_EN_CMD, &tr->Int_En);
2408
2409 /* set queues */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002410 tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002411 tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base,
2412 &tr->FDA_Lim);
2413 /*
2414 * Activation method:
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002415 * First, enable the MAC Transmitter and the DMA Receive circuits.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416 * Then enable the DMA Transmitter and the MAC Receive circuits.
2417 */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002418 tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419 tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002420
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421 /* start MAC transmitter */
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002422#ifndef NO_CHECK_CARRIER
2423 /* TX4939 does not have EnLCarr */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002424 if (lp->chiptype == TC35815_TX4939)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002425 txctl &= ~Tx_EnLCarr;
2426#ifdef WORKAROUND_LOSTCAR
Linus Torvalds1da177e2005-04-16 15:20:36 -07002427 /* WORKAROUND: ignore LostCrS in full duplex operation */
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002428 if (!lp->phy_dev || !lp->link || lp->duplex == DUPLEX_FULL)
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002429 txctl &= ~Tx_EnLCarr;
2430#endif
2431#endif /* !NO_CHECK_CARRIER */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002432#ifdef GATHER_TXINT
2433 txctl &= ~Tx_EnComp; /* disable global tx completion int. */
2434#endif
2435 tc_writel(txctl, &tr->Tx_Ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436}
2437
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002438#ifdef CONFIG_PM
2439static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state)
2440{
2441 struct net_device *dev = pci_get_drvdata(pdev);
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002442 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002443 unsigned long flags;
2444
2445 pci_save_state(pdev);
2446 if (!netif_running(dev))
2447 return 0;
2448 netif_device_detach(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002449 if (lp->phy_dev)
2450 phy_stop(lp->phy_dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002451 spin_lock_irqsave(&lp->lock, flags);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002452 tc35815_chip_reset(dev);
2453 spin_unlock_irqrestore(&lp->lock, flags);
2454 pci_set_power_state(pdev, PCI_D3hot);
2455 return 0;
2456}
2457
2458static int tc35815_resume(struct pci_dev *pdev)
2459{
2460 struct net_device *dev = pci_get_drvdata(pdev);
Atsushi Nemotoee79b7f2008-04-11 00:24:36 +09002461 struct tc35815_local *lp = netdev_priv(dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002462
2463 pci_restore_state(pdev);
2464 if (!netif_running(dev))
2465 return 0;
2466 pci_set_power_state(pdev, PCI_D0);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002467 tc35815_restart(dev);
Atsushi Nemoto59524a32008-06-25 11:41:01 +09002468 netif_carrier_off(dev);
Atsushi Nemotoc6686fe2008-04-12 00:47:46 +09002469 if (lp->phy_dev)
2470 phy_start(lp->phy_dev);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002471 netif_device_attach(dev);
2472 return 0;
2473}
2474#endif /* CONFIG_PM */
2475
2476static struct pci_driver tc35815_pci_driver = {
2477 .name = MODNAME,
2478 .id_table = tc35815_pci_tbl,
2479 .probe = tc35815_init_one,
2480 .remove = __devexit_p(tc35815_remove_one),
2481#ifdef CONFIG_PM
2482 .suspend = tc35815_suspend,
2483 .resume = tc35815_resume,
2484#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002485};
2486
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002487module_param_named(speed, options.speed, int, 0);
2488MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps");
2489module_param_named(duplex, options.duplex, int, 0);
2490MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full");
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002491
Linus Torvalds1da177e2005-04-16 15:20:36 -07002492static int __init tc35815_init_module(void)
2493{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002494 return pci_register_driver(&tc35815_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002495}
2496
2497static void __exit tc35815_cleanup_module(void)
2498{
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002499 pci_unregister_driver(&tc35815_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500}
Jeff Garzik420e8522007-02-24 17:02:16 -05002501
Linus Torvalds1da177e2005-04-16 15:20:36 -07002502module_init(tc35815_init_module);
2503module_exit(tc35815_cleanup_module);
Atsushi Nemotoeea221ce2007-03-03 23:54:59 +09002504
2505MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2506MODULE_LICENSE("GPL");