diff options
Diffstat (limited to 'drivers/net/tc35815.c')
| -rw-r--r-- | drivers/net/tc35815.c | 2992 |
1 files changed, 0 insertions, 2992 deletions
diff --git a/drivers/net/tc35815.c b/drivers/net/tc35815.c deleted file mode 100644 index 370d329d15d..00000000000 --- a/drivers/net/tc35815.c +++ /dev/null @@ -1,2992 +0,0 @@ -/* - * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux. - * - * Based on skelton.c by Donald Becker. - * - * This driver is a replacement of older and less maintained version. - * This is a header of the older version: - * -----<snip>----- - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ahennessy@mvista.com - * Copyright (C) 2000-2001 Toshiba Corporation - * static const char *version = - * "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n"; - * -----<snip>----- - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * (C) Copyright TOSHIBA CORPORATION 2004-2005 - * All Rights Reserved. - */ - -#ifdef TC35815_NAPI -#define DRV_VERSION "1.36-NAPI" -#else -#define DRV_VERSION "1.36" -#endif -static const char *version = "tc35815.c:v" DRV_VERSION "\n"; -#define MODNAME "tc35815" - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/in.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/spinlock.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/mii.h> -#include <linux/ethtool.h> -#include <linux/platform_device.h> -#include <asm/io.h> -#include <asm/byteorder.h> - -/* First, a few definitions that the brave might change. */ - -#define GATHER_TXINT /* On-Demand Tx Interrupt */ -#define WORKAROUND_LOSTCAR -#define WORKAROUND_100HALF_PROMISC -/* #define TC35815_USE_PACKEDBUFFER */ - -typedef enum { - TC35815CF = 0, - TC35815_NWU, - TC35815_TX4939, -} board_t; - -/* indexed by board_t, above */ -static const struct { - const char *name; -} board_info[] __devinitdata = { - { "TOSHIBA TC35815CF 10/100BaseTX" }, - { "TOSHIBA TC35815 with Wake on LAN" }, - { "TOSHIBA TC35815/TX4939" }, -}; - -static const struct pci_device_id tc35815_pci_tbl[] = { - {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF }, - {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU }, - {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 }, - {0,} -}; -MODULE_DEVICE_TABLE (pci, tc35815_pci_tbl); - -/* see MODULE_PARM_DESC */ -static struct tc35815_options { - int speed; - int duplex; - int doforce; -} options; - -/* - * Registers - */ -struct tc35815_regs { - volatile __u32 DMA_Ctl; /* 0x00 */ - volatile __u32 TxFrmPtr; - volatile __u32 TxThrsh; - volatile __u32 TxPollCtr; - volatile __u32 BLFrmPtr; - volatile __u32 RxFragSize; - volatile __u32 Int_En; - volatile __u32 FDA_Bas; - volatile __u32 FDA_Lim; /* 0x20 */ - volatile __u32 Int_Src; - volatile __u32 unused0[2]; - volatile __u32 PauseCnt; - volatile __u32 RemPauCnt; - volatile __u32 TxCtlFrmStat; - volatile __u32 unused1; - volatile __u32 MAC_Ctl; /* 0x40 */ - volatile __u32 CAM_Ctl; - volatile __u32 Tx_Ctl; - volatile __u32 Tx_Stat; - volatile __u32 Rx_Ctl; - volatile __u32 Rx_Stat; - volatile __u32 MD_Data; - volatile __u32 MD_CA; - volatile __u32 CAM_Adr; /* 0x60 */ - volatile __u32 CAM_Data; - volatile __u32 CAM_Ena; - volatile __u32 PROM_Ctl; - volatile __u32 PROM_Data; - volatile __u32 Algn_Cnt; - volatile __u32 CRC_Cnt; - volatile __u32 Miss_Cnt; -}; - -/* - * Bit assignments - */ -/* DMA_Ctl bit asign ------------------------------------------------------- */ -#define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */ -#define DMA_RxAlign_1 0x00400000 -#define DMA_RxAlign_2 0x00800000 -#define DMA_RxAlign_3 0x00c00000 -#define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */ -#define DMA_IntMask 0x00040000 /* 1:Interupt mask */ -#define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */ -#define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */ -#define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */ -#define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */ -#define DMA_TestMode 0x00002000 /* 1:Test Mode */ -#define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */ -#define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */ - -/* RxFragSize bit asign ---------------------------------------------------- */ -#define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */ -#define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */ - -/* MAC_Ctl bit asign ------------------------------------------------------- */ -#define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */ -#define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */ -#define MAC_MissRoll 0x00000400 /* 1:Missed Roll */ -#define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */ -#define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */ -#define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/ -#define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */ -#define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */ -#define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */ -#define MAC_Reset 0x00000004 /* 1:Software Reset */ -#define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */ -#define MAC_HaltReq 0x00000001 /* 1:Halt request */ - -/* PROM_Ctl bit asign ------------------------------------------------------ */ -#define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */ -#define PROM_Read 0x00004000 /*10:Read operation */ -#define PROM_Write 0x00002000 /*01:Write operation */ -#define PROM_Erase 0x00006000 /*11:Erase operation */ - /*00:Enable or Disable Writting, */ - /* as specified in PROM_Addr. */ -#define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */ - /*00xxxx: disable */ - -/* CAM_Ctl bit asign ------------------------------------------------------- */ -#define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */ -#define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/ - /* accept other */ -#define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */ -#define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */ -#define CAM_StationAcc 0x00000001 /* 1:unicast accept */ - -/* CAM_Ena bit asign ------------------------------------------------------- */ -#define CAM_ENTRY_MAX 21 /* CAM Data entry max count */ -#define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */ -#define CAM_Ena_Bit(index) (1<<(index)) -#define CAM_ENTRY_DESTINATION 0 -#define CAM_ENTRY_SOURCE 1 -#define CAM_ENTRY_MACCTL 20 - -/* Tx_Ctl bit asign -------------------------------------------------------- */ -#define Tx_En 0x00000001 /* 1:Transmit enable */ -#define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */ -#define Tx_NoPad 0x00000004 /* 1:Suppress Padding */ -#define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */ -#define Tx_FBack 0x00000010 /* 1:Fast Back-off */ -#define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */ -#define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */ -#define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */ -#define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */ -#define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */ -#define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */ -#define Tx_EnComp 0x00004000 /* 1:Enable Completion */ - -/* Tx_Stat bit asign ------------------------------------------------------- */ -#define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */ -#define Tx_ExColl 0x00000010 /* Excessive Collision */ -#define Tx_TXDefer 0x00000020 /* Transmit Defered */ -#define Tx_Paused 0x00000040 /* Transmit Paused */ -#define Tx_IntTx 0x00000080 /* Interrupt on Tx */ -#define Tx_Under 0x00000100 /* Underrun */ -#define Tx_Defer 0x00000200 /* Deferral */ -#define Tx_NCarr 0x00000400 /* No Carrier */ -#define Tx_10Stat 0x00000800 /* 10Mbps Status */ -#define Tx_LateColl 0x00001000 /* Late Collision */ -#define Tx_TxPar 0x00002000 /* Tx Parity Error */ -#define Tx_Comp 0x00004000 /* Completion */ -#define Tx_Halted 0x00008000 /* Tx Halted */ -#define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */ - -/* Rx_Ctl bit asign -------------------------------------------------------- */ -#define Rx_EnGood 0x00004000 /* 1:Enable Good */ -#define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */ -#define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */ -#define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */ -#define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */ -#define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */ -#define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */ -#define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */ -#define Rx_ShortEn 0x00000008 /* 1:Short Enable */ -#define Rx_LongEn 0x00000004 /* 1:Long Enable */ -#define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */ -#define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */ - -/* Rx_Stat bit asign ------------------------------------------------------- */ -#define Rx_Halted 0x00008000 /* Rx Halted */ -#define Rx_Good 0x00004000 /* Rx Good */ -#define Rx_RxPar 0x00002000 /* Rx Parity Error */ - /* 0x00001000 not use */ -#define Rx_LongErr 0x00000800 /* Rx Long Error */ -#define Rx_Over 0x00000400 /* Rx Overflow */ -#define Rx_CRCErr 0x00000200 /* Rx CRC Error */ -#define Rx_Align 0x00000100 /* Rx Alignment Error */ -#define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */ -#define Rx_IntRx 0x00000040 /* Rx Interrupt */ -#define Rx_CtlRecd 0x00000020 /* Rx Control Receive */ - -#define Rx_Stat_Mask 0x0000EFC0 /* Rx All Status Mask */ - -/* Int_En bit asign -------------------------------------------------------- */ -#define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */ -#define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Control Complete Enable */ -#define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */ -#define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */ -#define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */ -#define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */ -#define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */ -#define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */ -#define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */ -#define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */ -#define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */ -#define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */ - /* Exhausted Enable */ - -/* Int_Src bit asign ------------------------------------------------------- */ -#define Int_NRabt 0x00004000 /* 1:Non Recoverable error */ -#define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */ -#define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */ -#define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */ -#define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */ -#define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */ -#define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */ -#define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */ -#define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */ -#define Int_SWInt 0x00000020 /* 1:Software request & Clear */ -#define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */ -#define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */ -#define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */ -#define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */ -#define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */ - -/* MD_CA bit asign --------------------------------------------------------- */ -#define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */ -#define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */ -#define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */ - - -/* - * Descriptors - */ - -/* Frame descripter */ -struct FDesc { - volatile __u32 FDNext; - volatile __u32 FDSystem; - volatile __u32 FDStat; - volatile __u32 FDCtl; -}; - -/* Buffer descripter */ -struct BDesc { - volatile __u32 BuffData; - volatile __u32 BDCtl; -}; - -#define FD_ALIGN 16 - -/* Frame Descripter bit asign ---------------------------------------------- */ -#define FD_FDLength_MASK 0x0000FFFF /* Length MASK */ -#define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */ -#define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */ -#define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */ -#define FD_FrmOpt_IntTx 0x20000000 /* Tx only */ -#define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */ -#define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */ -#define FD_FrmOpt_Packing 0x04000000 /* Rx only */ -#define FD_CownsFD 0x80000000 /* FD Controller owner bit */ -#define FD_Next_EOL 0x00000001 /* FD EOL indicator */ -#define FD_BDCnt_SHIFT 16 - -/* Buffer Descripter bit asign --------------------------------------------- */ -#define BD_BuffLength_MASK 0x0000FFFF /* Recieve Data Size */ -#define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */ -#define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */ -#define BD_CownsBD 0x80000000 /* BD Controller owner bit */ -#define BD_RxBDID_SHIFT 16 -#define BD_RxBDSeqN_SHIFT 24 - - -/* Some useful constants. */ -#undef NO_CHECK_CARRIER /* Does not check No-Carrier with TP */ - -#ifdef NO_CHECK_CARRIER -#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \ - Tx_EnExColl | Tx_EnExDefer | Tx_EnUnder | \ - Tx_En) /* maybe 0x7b01 */ -#else -#define TX_CTL_CMD (Tx_EnComp | Tx_EnTxPar | Tx_EnLateColl | \ - Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \ - Tx_En) /* maybe 0x7b01 */ -#endif -#define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \ - | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */ -#define INT_EN_CMD (Int_NRAbtEn | \ - Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \ - Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \ - Int_STargAbtEn | \ - Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/ -#define DMA_CTL_CMD DMA_BURST_SIZE -#define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF) - -/* Tuning parameters */ -#define DMA_BURST_SIZE 32 -#define TX_THRESHOLD 1024 -#define TX_THRESHOLD_MAX 1536 /* used threshold with packet max byte for low pci transfer ability.*/ -#define TX_THRESHOLD_KEEP_LIMIT 10 /* setting threshold max value when overrun error occured this count. */ - -/* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */ -#ifdef TC35815_USE_PACKEDBUFFER -#define FD_PAGE_NUM 2 -#define RX_BUF_NUM 8 /* >= 2 */ -#define RX_FD_NUM 250 /* >= 32 */ -#define TX_FD_NUM 128 -#define RX_BUF_SIZE PAGE_SIZE -#else /* TC35815_USE_PACKEDBUFFER */ -#define FD_PAGE_NUM 4 -#define RX_BUF_NUM 128 /* < 256 */ -#define RX_FD_NUM 256 /* >= 32 */ -#define TX_FD_NUM 128 -#if RX_CTL_CMD & Rx_LongEn -#define RX_BUF_SIZE PAGE_SIZE -#elif RX_CTL_CMD & Rx_StripCRC -#define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 4 + 2, 32) /* +2: reserve */ -#else -#define RX_BUF_SIZE ALIGN(ETH_FRAME_LEN + 2, 32) /* +2: reserve */ -#endif -#endif /* TC35815_USE_PACKEDBUFFER */ -#define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */ -#define NAPI_WEIGHT 16 - -struct TxFD { - struct FDesc fd; - struct BDesc bd; - struct BDesc unused; -}; - -struct RxFD { - struct FDesc fd; - struct BDesc bd[0]; /* variable length */ -}; - -struct FrFD { - struct FDesc fd; - struct BDesc bd[RX_BUF_NUM]; -}; - - -#define tc_readl(addr) readl(addr) -#define tc_writel(d, addr) writel(d, addr) - -#define TC35815_TX_TIMEOUT msecs_to_jiffies(400) - -/* Timer state engine. */ -enum tc35815_timer_state { - arbwait = 0, /* Waiting for auto negotiation to complete. */ - lupwait = 1, /* Auto-neg complete, awaiting link-up status. */ - ltrywait = 2, /* Forcing try of all modes, from fastest to slowest. */ - asleep = 3, /* Time inactive. */ - lcheck = 4, /* Check link status. */ -}; - -/* Information that need to be kept for each board. */ -struct tc35815_local { - struct pci_dev *pci_dev; - - struct net_device *dev; - struct napi_struct napi; - - /* statistics */ - struct net_device_stats stats; - struct { - int max_tx_qlen; - int tx_ints; - int rx_ints; - int tx_underrun; - } lstats; - - /* Tx control lock. This protects the transmit buffer ring - * state along with the "tx full" state of the driver. This - * means all netif_queue flow control actions are protected - * by this lock as well. - */ - spinlock_t lock; - - int phy_addr; - int fullduplex; - unsigned short saved_lpa; - struct timer_list timer; - enum tc35815_timer_state timer_state; /* State of auto-neg timer. */ - unsigned int timer_ticks; /* Number of clicks at each state */ - - /* - * Transmitting: Batch Mode. - * 1 BD in 1 TxFD. - * Receiving: Packing Mode. (TC35815_USE_PACKEDBUFFER) - * 1 circular FD for Free Buffer List. - * RX_BUF_NUM BD in Free Buffer FD. - * One Free Buffer BD has PAGE_SIZE data buffer. - * Or Non-Packing Mode. - * 1 circular FD for Free Buffer List. - * RX_BUF_NUM BD in Free Buffer FD. - * One Free Buffer BD has ETH_FRAME_LEN data buffer. - */ - void * fd_buf; /* for TxFD, RxFD, FrFD */ - dma_addr_t fd_buf_dma; - struct TxFD *tfd_base; - unsigned int tfd_start; - unsigned int tfd_end; - struct RxFD *rfd_base; - struct RxFD *rfd_limit; - struct RxFD *rfd_cur; - struct FrFD *fbl_ptr; -#ifdef TC35815_USE_PACKEDBUFFER - unsigned char fbl_curid; - void * data_buf[RX_BUF_NUM]; /* packing */ - dma_addr_t data_buf_dma[RX_BUF_NUM]; - struct { - struct sk_buff *skb; - dma_addr_t skb_dma; - } tx_skbs[TX_FD_NUM]; -#else - unsigned int fbl_count; - struct { - struct sk_buff *skb; - dma_addr_t skb_dma; - } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM]; -#endif - struct mii_if_info mii; - unsigned short mii_id[2]; - u32 msg_enable; - board_t boardtype; -}; - -static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt) -{ - return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf); -} -#ifdef DEBUG -static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus) -{ - return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma)); -} -#endif -#ifdef TC35815_USE_PACKEDBUFFER -static inline void *rxbuf_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus) -{ - int i; - for (i = 0; i < RX_BUF_NUM; i++) { - if (bus >= lp->data_buf_dma[i] && - bus < lp->data_buf_dma[i] + PAGE_SIZE) - return (void *)((u8 *)lp->data_buf[i] + - (bus - lp->data_buf_dma[i])); - } - return NULL; -} - -#define TC35815_DMA_SYNC_ONDEMAND -static void* alloc_rxbuf_page(struct pci_dev *hwdev, dma_addr_t *dma_handle) -{ -#ifdef TC35815_DMA_SYNC_ONDEMAND - void *buf; - /* pci_map + pci_dma_sync will be more effective than - * pci_alloc_consistent on some archs. */ - if ((buf = (void *)__get_free_page(GFP_ATOMIC)) == NULL) - return NULL; - *dma_handle = pci_map_single(hwdev, buf, PAGE_SIZE, - PCI_DMA_FROMDEVICE); - if (pci_dma_mapping_error(*dma_handle)) { - free_page((unsigned long)buf); - return NULL; - } - return buf; -#else - return pci_alloc_consistent(hwdev, PAGE_SIZE, dma_handle); -#endif -} - -static void free_rxbuf_page(struct pci_dev *hwdev, void *buf, dma_addr_t dma_handle) -{ -#ifdef TC35815_DMA_SYNC_ONDEMAND - pci_unmap_single(hwdev, dma_handle, PAGE_SIZE, PCI_DMA_FROMDEVICE); - free_page((unsigned long)buf); -#else - pci_free_consistent(hwdev, PAGE_SIZE, buf, dma_handle); -#endif -} -#else /* TC35815_USE_PACKEDBUFFER */ -static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev, - struct pci_dev *hwdev, - dma_addr_t *dma_handle) -{ - struct sk_buff *skb; - skb = dev_alloc_skb(RX_BUF_SIZE); - if (!skb) - return NULL; - *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE, - PCI_DMA_FROMDEVICE); - if (pci_dma_mapping_error(*dma_handle)) { - dev_kfree_skb_any(skb); - return NULL; - } - skb_reserve(skb, 2); /* make IP header 4byte aligned */ - return skb; -} - -static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle) -{ - pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(skb); -} -#endif /* TC35815_USE_PACKEDBUFFER */ - -/* Index to functions, as function prototypes. */ - -static int tc35815_open(struct net_device *dev); -static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev); -static irqreturn_t tc35815_interrupt(int irq, void *dev_id); -#ifdef TC35815_NAPI -static int tc35815_rx(struct net_device *dev, int limit); -static int tc35815_poll(struct napi_struct *napi, int budget); -#else -static void tc35815_rx(struct net_device *dev); -#endif -static void tc35815_txdone(struct net_device *dev); -static int tc35815_close(struct net_device *dev); -static struct net_device_stats *tc35815_get_stats(struct net_device *dev); -static void tc35815_set_multicast_list(struct net_device *dev); -static void tc35815_tx_timeout(struct net_device *dev); -static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -#ifdef CONFIG_NET_POLL_CONTROLLER -static void tc35815_poll_controller(struct net_device *dev); -#endif -static const struct ethtool_ops tc35815_ethtool_ops; - -/* Example routines you must write ;->. */ -static void tc35815_chip_reset(struct net_device *dev); -static void tc35815_chip_init(struct net_device *dev); -static void tc35815_find_phy(struct net_device *dev); -static void tc35815_phy_chip_init(struct net_device *dev); - -#ifdef DEBUG -static void panic_queues(struct net_device *dev); -#endif - -static void tc35815_timer(unsigned long data); -static void tc35815_start_auto_negotiation(struct net_device *dev, - struct ethtool_cmd *ep); -static int tc_mdio_read(struct net_device *dev, int phy_id, int location); -static void tc_mdio_write(struct net_device *dev, int phy_id, int location, - int val); - -#ifdef CONFIG_CPU_TX49XX -/* - * Find a platform_device providing a MAC address. The platform code - * should provide a "tc35815-mac" device with a MAC address in its - * platform_data. - */ -static int __devinit tc35815_mac_match(struct device *dev, void *data) -{ - struct platform_device *plat_dev = to_platform_device(dev); - struct pci_dev *pci_dev = data; - unsigned int id = pci_dev->irq; - return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id; -} - -static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct device *pd = bus_find_device(&platform_bus_type, NULL, - lp->pci_dev, tc35815_mac_match); - if (pd) { - if (pd->platform_data) - memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN); - put_device(pd); - return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV; - } - return -ENODEV; -} -#else -static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) -{ - return -ENODEV; -} -#endif - -static int __devinit tc35815_init_dev_addr (struct net_device *dev) -{ - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int i; - - while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) - ; - for (i = 0; i < 6; i += 2) { - unsigned short data; - tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl); - while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) - ; - data = tc_readl(&tr->PROM_Data); - dev->dev_addr[i] = data & 0xff; - dev->dev_addr[i+1] = data >> 8; - } - if (!is_valid_ether_addr(dev->dev_addr)) - return tc35815_read_plat_dev_addr(dev); - return 0; -} - -static int __devinit tc35815_init_one (struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - void __iomem *ioaddr = NULL; - struct net_device *dev; - struct tc35815_local *lp; - int rc; - unsigned long mmio_start, mmio_end, mmio_flags, mmio_len; - - static int printed_version; - if (!printed_version++) { - printk(version); - dev_printk(KERN_DEBUG, &pdev->dev, - "speed:%d duplex:%d doforce:%d\n", - options.speed, options.duplex, options.doforce); - } - - if (!pdev->irq) { - dev_warn(&pdev->dev, "no IRQ assigned.\n"); - return -ENODEV; - } - - /* dev zeroed in alloc_etherdev */ - dev = alloc_etherdev (sizeof (*lp)); - if (dev == NULL) { - dev_err(&pdev->dev, "unable to alloc new ethernet\n"); - return -ENOMEM; - } - SET_NETDEV_DEV(dev, &pdev->dev); - lp = dev->priv; - lp->dev = dev; - - /* enable device (incl. PCI PM wakeup), and bus-mastering */ - rc = pci_enable_device (pdev); - if (rc) - goto err_out; - - mmio_start = pci_resource_start (pdev, 1); - mmio_end = pci_resource_end (pdev, 1); - mmio_flags = pci_resource_flags (pdev, 1); - mmio_len = pci_resource_len (pdev, 1); - - /* set this immediately, we need to know before - * we talk to the chip directly */ - - /* make sure PCI base addr 1 is MMIO */ - if (!(mmio_flags & IORESOURCE_MEM)) { - dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n"); - rc = -ENODEV; - goto err_out; - } - - /* check for weird/broken PCI region reporting */ - if ((mmio_len < sizeof(struct tc35815_regs))) { - dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n"); - rc = -ENODEV; - goto err_out; - } - - rc = pci_request_regions (pdev, MODNAME); - if (rc) - goto err_out; - - pci_set_master (pdev); - - /* ioremap MMIO region */ - ioaddr = ioremap (mmio_start, mmio_len); - if (ioaddr == NULL) { - dev_err(&pdev->dev, "cannot remap MMIO, aborting\n"); - rc = -EIO; - goto err_out_free_res; - } - - /* Initialize the device structure. */ - dev->open = tc35815_open; - dev->hard_start_xmit = tc35815_send_packet; - dev->stop = tc35815_close; - dev->get_stats = tc35815_get_stats; - dev->set_multicast_list = tc35815_set_multicast_list; - dev->do_ioctl = tc35815_ioctl; - dev->ethtool_ops = &tc35815_ethtool_ops; - dev->tx_timeout = tc35815_tx_timeout; - dev->watchdog_timeo = TC35815_TX_TIMEOUT; -#ifdef TC35815_NAPI - netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT); -#endif -#ifdef CONFIG_NET_POLL_CONTROLLER - dev->poll_controller = tc35815_poll_controller; -#endif - - dev->irq = pdev->irq; - dev->base_addr = (unsigned long) ioaddr; - - spin_lock_init(&lp->lock); - lp->pci_dev = pdev; - lp->boardtype = ent->driver_data; - - lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK; - pci_set_drvdata(pdev, dev); - - /* Soft reset the chip. */ - tc35815_chip_reset(dev); - - /* Retrieve the ethernet address. */ - if (tc35815_init_dev_addr(dev)) { - dev_warn(&pdev->dev, "not valid ether addr\n"); - random_ether_addr(dev->dev_addr); - } - - rc = register_netdev (dev); - if (rc) - goto err_out_unmap; - - memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); - printk(KERN_INFO "%s: %s at 0x%lx, " - "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, " - "IRQ %d\n", - dev->name, - board_info[ent->driver_data].name, - dev->base_addr, - dev->dev_addr[0], dev->dev_addr[1], - dev->dev_addr[2], dev->dev_addr[3], - dev->dev_addr[4], dev->dev_addr[5], - dev->irq); - - setup_timer(&lp->timer, tc35815_timer, (unsigned long) dev); - lp->mii.dev = dev; - lp->mii.mdio_read = tc_mdio_read; - lp->mii.mdio_write = tc_mdio_write; - lp->mii.phy_id_mask = 0x1f; - lp->mii.reg_num_mask = 0x1f; - tc35815_find_phy(dev); - lp->mii.phy_id = lp->phy_addr; - lp->mii.full_duplex = 0; - lp->mii.force_media = 0; - - return 0; - -err_out_unmap: - iounmap(ioaddr); -err_out_free_res: - pci_release_regions (pdev); -err_out: - free_netdev (dev); - return rc; -} - - -static void __devexit tc35815_remove_one (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata (pdev); - unsigned long mmio_addr; - - mmio_addr = dev->base_addr; - - unregister_netdev (dev); - - if (mmio_addr) { - iounmap ((void __iomem *)mmio_addr); - pci_release_regions (pdev); - } - - free_netdev (dev); - - pci_set_drvdata (pdev, NULL); -} - -static int -tc35815_init_queues(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int i; - unsigned long fd_addr; - - if (!lp->fd_buf) { - BUG_ON(sizeof(struct FDesc) + - sizeof(struct BDesc) * RX_BUF_NUM + - sizeof(struct FDesc) * RX_FD_NUM + - sizeof(struct TxFD) * TX_FD_NUM > - PAGE_SIZE * FD_PAGE_NUM); - - if ((lp->fd_buf = pci_alloc_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, &lp->fd_buf_dma)) == 0) - return -ENOMEM; - for (i = 0; i < RX_BUF_NUM; i++) { -#ifdef TC35815_USE_PACKEDBUFFER - if ((lp->data_buf[i] = alloc_rxbuf_page(lp->pci_dev, &lp->data_buf_dma[i])) == NULL) { - while (--i >= 0) { - free_rxbuf_page(lp->pci_dev, - lp->data_buf[i], - lp->data_buf_dma[i]); - lp->data_buf[i] = NULL; - } - pci_free_consistent(lp->pci_dev, - PAGE_SIZE * FD_PAGE_NUM, - lp->fd_buf, - lp->fd_buf_dma); - lp->fd_buf = NULL; - return -ENOMEM; - } -#else - lp->rx_skbs[i].skb = - alloc_rxbuf_skb(dev, lp->pci_dev, - &lp->rx_skbs[i].skb_dma); - if (!lp->rx_skbs[i].skb) { - while (--i >= 0) { - free_rxbuf_skb(lp->pci_dev, - lp->rx_skbs[i].skb, - lp->rx_skbs[i].skb_dma); - lp->rx_skbs[i].skb = NULL; - } - pci_free_consistent(lp->pci_dev, - PAGE_SIZE * FD_PAGE_NUM, - lp->fd_buf, - lp->fd_buf_dma); - lp->fd_buf = NULL; - return -ENOMEM; - } -#endif - } - printk(KERN_DEBUG "%s: FD buf %p DataBuf", - dev->name, lp->fd_buf); -#ifdef TC35815_USE_PACKEDBUFFER - printk(" DataBuf"); - for (i = 0; i < RX_BUF_NUM; i++) - printk(" %p", lp->data_buf[i]); -#endif - printk("\n"); - } else { - for (i = 0; i < FD_PAGE_NUM; i++) { - clear_page((void *)((unsigned long)lp->fd_buf + i * PAGE_SIZE)); - } - } - fd_addr = (unsigned long)lp->fd_buf; - - /* Free Descriptors (for Receive) */ - lp->rfd_base = (struct RxFD *)fd_addr; - fd_addr += sizeof(struct RxFD) * RX_FD_NUM; - for (i = 0; i < RX_FD_NUM; i++) { - lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD); - } - lp->rfd_cur = lp->rfd_base; - lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1); - - /* Transmit Descriptors */ - lp->tfd_base = (struct TxFD *)fd_addr; - fd_addr += sizeof(struct TxFD) * TX_FD_NUM; - for (i = 0; i < TX_FD_NUM; i++) { - lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1])); - lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); - lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0); - } - lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0])); - lp->tfd_start = 0; - lp->tfd_end = 0; - - /* Buffer List (for Receive) */ - lp->fbl_ptr = (struct FrFD *)fd_addr; - lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr)); - lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD); -#ifndef TC35815_USE_PACKEDBUFFER - /* - * move all allocated skbs to head of rx_skbs[] array. - * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in - * tc35815_rx() had failed. - */ - lp->fbl_count = 0; - for (i = 0; i < RX_BUF_NUM; i++) { - if (lp->rx_skbs[i].skb) { - if (i != lp->fbl_count) { - lp->rx_skbs[lp->fbl_count].skb = - lp->rx_skbs[i].skb; - lp->rx_skbs[lp->fbl_count].skb_dma = - lp->rx_skbs[i].skb_dma; - } - lp->fbl_count++; - } - } -#endif - for (i = 0; i < RX_BUF_NUM; i++) { -#ifdef TC35815_USE_PACKEDBUFFER - lp->fbl_ptr->bd[i].BuffData = cpu_to_le32(lp->data_buf_dma[i]); -#else - if (i >= lp->fbl_count) { - lp->fbl_ptr->bd[i].BuffData = 0; - lp->fbl_ptr->bd[i].BDCtl = 0; - continue; - } - lp->fbl_ptr->bd[i].BuffData = - cpu_to_le32(lp->rx_skbs[i].skb_dma); -#endif - /* BDID is index of FrFD.bd[] */ - lp->fbl_ptr->bd[i].BDCtl = - cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) | - RX_BUF_SIZE); - } -#ifdef TC35815_USE_PACKEDBUFFER - lp->fbl_curid = 0; -#endif - - printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n", - dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr); - return 0; -} - -static void -tc35815_clear_queues(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int i; - - for (i = 0; i < TX_FD_NUM; i++) { - u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); - struct sk_buff *skb = - fdsystem != 0xffffffff ? - lp->tx_skbs[fdsystem].skb : NULL; -#ifdef DEBUG - if (lp->tx_skbs[i].skb != skb) { - printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); - panic_queues(dev); - } -#else - BUG_ON(lp->tx_skbs[i].skb != skb); -#endif - if (skb) { - pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); - lp->tx_skbs[i].skb = NULL; - lp->tx_skbs[i].skb_dma = 0; - dev_kfree_skb_any(skb); - } - lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); - } - - tc35815_init_queues(dev); -} - -static void -tc35815_free_queues(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int i; - - if (lp->tfd_base) { - for (i = 0; i < TX_FD_NUM; i++) { - u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); - struct sk_buff *skb = - fdsystem != 0xffffffff ? - lp->tx_skbs[fdsystem].skb : NULL; -#ifdef DEBUG - if (lp->tx_skbs[i].skb != skb) { - printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); - panic_queues(dev); - } -#else - BUG_ON(lp->tx_skbs[i].skb != skb); -#endif - if (skb) { - dev_kfree_skb(skb); - pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); - lp->tx_skbs[i].skb = NULL; - lp->tx_skbs[i].skb_dma = 0; - } - lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); - } - } - - lp->rfd_base = NULL; - lp->rfd_limit = NULL; - lp->rfd_cur = NULL; - lp->fbl_ptr = NULL; - - for (i = 0; i < RX_BUF_NUM; i++) { -#ifdef TC35815_USE_PACKEDBUFFER - if (lp->data_buf[i]) { - free_rxbuf_page(lp->pci_dev, - lp->data_buf[i], lp->data_buf_dma[i]); - lp->data_buf[i] = NULL; - } -#else - if (lp->rx_skbs[i].skb) { - free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb, - lp->rx_skbs[i].skb_dma); - lp->rx_skbs[i].skb = NULL; - } -#endif - } - if (lp->fd_buf) { - pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, - lp->fd_buf, lp->fd_buf_dma); - lp->fd_buf = NULL; - } -} - -static void -dump_txfd(struct TxFD *fd) -{ - printk("TxFD(%p): %08x %08x %08x %08x\n", fd, - le32_to_cpu(fd->fd.FDNext), - le32_to_cpu(fd->fd.FDSystem), - le32_to_cpu(fd->fd.FDStat), - le32_to_cpu(fd->fd.FDCtl)); - printk("BD: "); - printk(" %08x %08x", - le32_to_cpu(fd->bd.BuffData), - le32_to_cpu(fd->bd.BDCtl)); - printk("\n"); -} - -static int -dump_rxfd(struct RxFD *fd) -{ - int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; - if (bd_count > 8) - bd_count = 8; - printk("RxFD(%p): %08x %08x %08x %08x\n", fd, - le32_to_cpu(fd->fd.FDNext), - le32_to_cpu(fd->fd.FDSystem), - le32_to_cpu(fd->fd.FDStat), - le32_to_cpu(fd->fd.FDCtl)); - if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD) - return 0; - printk("BD: "); - for (i = 0; i < bd_count; i++) - printk(" %08x %08x", - le32_to_cpu(fd->bd[i].BuffData), - le32_to_cpu(fd->bd[i].BDCtl)); - printk("\n"); - return bd_count; -} - -#if defined(DEBUG) || defined(TC35815_USE_PACKEDBUFFER) -static void -dump_frfd(struct FrFD *fd) -{ - int i; - printk("FrFD(%p): %08x %08x %08x %08x\n", fd, - le32_to_cpu(fd->fd.FDNext), - le32_to_cpu(fd->fd.FDSystem), - le32_to_cpu(fd->fd.FDStat), - le32_to_cpu(fd->fd.FDCtl)); - printk("BD: "); - for (i = 0; i < RX_BUF_NUM; i++) - printk(" %08x %08x", - le32_to_cpu(fd->bd[i].BuffData), - le32_to_cpu(fd->bd[i].BDCtl)); - printk("\n"); -} -#endif - -#ifdef DEBUG -static void -panic_queues(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int i; - - printk("TxFD base %p, start %u, end %u\n", - lp->tfd_base, lp->tfd_start, lp->tfd_end); - printk("RxFD base %p limit %p cur %p\n", - lp->rfd_base, lp->rfd_limit, lp->rfd_cur); - printk("FrFD %p\n", lp->fbl_ptr); - for (i = 0; i < TX_FD_NUM; i++) - dump_txfd(&lp->tfd_base[i]); - for (i = 0; i < RX_FD_NUM; i++) { - int bd_count = dump_rxfd(&lp->rfd_base[i]); - i += (bd_count + 1) / 2; /* skip BDs */ - } - dump_frfd(lp->fbl_ptr); - panic("%s: Illegal queue state.", dev->name); -} -#endif - -static void print_eth(char *add) -{ - int i; - - printk("print_eth(%p)\n", add); - for (i = 0; i < 6; i++) - printk(" %2.2X", (unsigned char) add[i + 6]); - printk(" =>"); - for (i = 0; i < 6; i++) - printk(" %2.2X", (unsigned char) add[i]); - printk(" : %2.2X%2.2X\n", (unsigned char) add[12], (unsigned char) add[13]); -} - -static int tc35815_tx_full(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - return ((lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end); -} - -static void tc35815_restart(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - int do_phy_reset = 1; - del_timer(&lp->timer); /* Kill if running */ - - if (lp->mii_id[0] == 0x0016 && (lp->mii_id[1] & 0xfc00) == 0xf800) { - /* Resetting PHY cause problem on some chip... (SEEQ 80221) */ - do_phy_reset = 0; - } - if (do_phy_reset) { - int timeout; - tc_mdio_write(dev, pid, MII_BMCR, BMCR_RESET); - timeout = 100; - while (--timeout) { - if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_RESET)) - break; - udelay(1); - } - if (!timeout) - printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name); - } - - tc35815_chip_reset(dev); - tc35815_clear_queues(dev); - tc35815_chip_init(dev); - /* Reconfigure CAM again since tc35815_chip_init() initialize it. */ - tc35815_set_multicast_list(dev); -} - -static void tc35815_tx_timeout(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - - printk(KERN_WARNING "%s: transmit timed out, status %#x\n", - dev->name, tc_readl(&tr->Tx_Stat)); - - /* Try to restart the adaptor. */ - spin_lock_irq(&lp->lock); - tc35815_restart(dev); - spin_unlock_irq(&lp->lock); - - lp->stats.tx_errors++; - - /* If we have space available to accept new transmit - * requests, wake up the queueing layer. This would - * be the case if the chipset_init() call above just - * flushes out the tx queue and empties it. - * - * If instead, the tx queue is retained then the - * netif_wake_queue() call should be placed in the - * TX completion interrupt handler of the driver instead - * of here. - */ - if (!tc35815_tx_full(dev)) - netif_wake_queue(dev); -} - -/* - * Open/initialize the board. This is called (in the current kernel) - * sometime after booting when the 'ifconfig' program is run. - * - * This routine should set everything up anew at each open, even - * registers that "should" only need to be set once at boot, so that - * there is non-reboot way to recover if something goes wrong. - */ -static int -tc35815_open(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - - /* - * This is used if the interrupt line can turned off (shared). - * See 3c503.c for an example of selecting the IRQ at config-time. - */ - if (request_irq(dev->irq, &tc35815_interrupt, IRQF_SHARED, dev->name, dev)) { - return -EAGAIN; - } - - del_timer(&lp->timer); /* Kill if running */ - tc35815_chip_reset(dev); - - if (tc35815_init_queues(dev) != 0) { - free_irq(dev->irq, dev); - return -EAGAIN; - } - -#ifdef TC35815_NAPI - napi_enable(&lp->napi); -#endif - - /* Reset the hardware here. Don't forget to set the station address. */ - spin_lock_irq(&lp->lock); - tc35815_chip_init(dev); - spin_unlock_irq(&lp->lock); - - /* We are now ready to accept transmit requeusts from - * the queueing layer of the networking. - */ - netif_start_queue(dev); - - return 0; -} - -/* This will only be invoked if your driver is _not_ in XOFF state. - * What this means is that you need not check it, and that this - * invariant will hold if you make sure that the netif_*_queue() - * calls are done at the proper times. - */ -static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct TxFD *txfd; - unsigned long flags; - - /* If some error occurs while trying to transmit this - * packet, you should return '1' from this function. - * In such a case you _may not_ do anything to the - * SKB, it is still owned by the network queueing - * layer when an error is returned. This means you - * may not modify any SKB fields, you may not free - * the SKB, etc. - */ - - /* This is the most common case for modern hardware. - * The spinlock protects this code from the TX complete - * hardware interrupt handler. Queue flow control is - * thus managed under this lock as well. - */ - spin_lock_irqsave(&lp->lock, flags); - - /* failsafe... (handle txdone now if half of FDs are used) */ - if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM > - TX_FD_NUM / 2) - tc35815_txdone(dev); - - if (netif_msg_pktdata(lp)) - print_eth(skb->data); -#ifdef DEBUG - if (lp->tx_skbs[lp->tfd_start].skb) { - printk("%s: tx_skbs conflict.\n", dev->name); - panic_queues(dev); - } -#else - BUG_ON(lp->tx_skbs[lp->tfd_start].skb); -#endif - lp->tx_skbs[lp->tfd_start].skb = skb; - lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); - - /*add to ring */ - txfd = &lp->tfd_base[lp->tfd_start]; - txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma); - txfd->bd.BDCtl = cpu_to_le32(skb->len); - txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start); - txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT)); - - if (lp->tfd_start == lp->tfd_end) { - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - /* Start DMA Transmitter. */ - txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL); -#ifdef GATHER_TXINT - txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); -#endif - if (netif_msg_tx_queued(lp)) { - printk("%s: starting TxFD.\n", dev->name); - dump_txfd(txfd); - } - tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); - } else { - txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL); - if (netif_msg_tx_queued(lp)) { - printk("%s: queueing TxFD.\n", dev->name); - dump_txfd(txfd); - } - } - lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM; - - dev->trans_start = jiffies; - - /* If we just used up the very last entry in the - * TX ring on this device, tell the queueing - * layer to send no more. - */ - if (tc35815_tx_full(dev)) { - if (netif_msg_tx_queued(lp)) - printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name); - netif_stop_queue(dev); - } - - /* When the TX completion hw interrupt arrives, this - * is when the transmit statistics are updated. - */ - - spin_unlock_irqrestore(&lp->lock, flags); - return 0; -} - -#define FATAL_ERROR_INT \ - (Int_IntPCI | Int_DmParErr | Int_IntNRAbt) -static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status) -{ - static int count; - printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):", - dev->name, status); - if (status & Int_IntPCI) - printk(" IntPCI"); - if (status & Int_DmParErr) - printk(" DmParErr"); - if (status & Int_IntNRAbt) - printk(" IntNRAbt"); - printk("\n"); - if (count++ > 100) - panic("%s: Too many fatal errors.", dev->name); - printk(KERN_WARNING "%s: Resetting ...\n", dev->name); - /* Try to restart the adaptor. */ - tc35815_restart(dev); -} - -#ifdef TC35815_NAPI -static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit) -#else -static int tc35815_do_interrupt(struct net_device *dev, u32 status) -#endif -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int ret = -1; - - /* Fatal errors... */ - if (status & FATAL_ERROR_INT) { - tc35815_fatal_error_interrupt(dev, status); - return 0; - } - /* recoverable errors */ - if (status & Int_IntFDAEx) { - /* disable FDAEx int. (until we make rooms...) */ - tc_writel(tc_readl(&tr->Int_En) & ~Int_FDAExEn, &tr->Int_En); - printk(KERN_WARNING - "%s: Free Descriptor Area Exhausted (%#x).\n", - dev->name, status); - lp->stats.rx_dropped++; - ret = 0; - } - if (status & Int_IntBLEx) { - /* disable BLEx int. (until we make rooms...) */ - tc_writel(tc_readl(&tr->Int_En) & ~Int_BLExEn, &tr->Int_En); - printk(KERN_WARNING - "%s: Buffer List Exhausted (%#x).\n", - dev->name, status); - lp->stats.rx_dropped++; - ret = 0; - } - if (status & Int_IntExBD) { - printk(KERN_WARNING - "%s: Excessive Buffer Descriptiors (%#x).\n", - dev->name, status); - lp->stats.rx_length_errors++; - ret = 0; - } - - /* normal notification */ - if (status & Int_IntMacRx) { - /* Got a packet(s). */ -#ifdef TC35815_NAPI - ret = tc35815_rx(dev, limit); -#else - tc35815_rx(dev); - ret = 0; -#endif - lp->lstats.rx_ints++; - } - if (status & Int_IntMacTx) { - /* Transmit complete. */ - lp->lstats.tx_ints++; - tc35815_txdone(dev); - netif_wake_queue(dev); - ret = 0; - } - return ret; -} - -/* - * The typical workload of the driver: - * Handle the network interface interrupts. - */ -static irqreturn_t tc35815_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct tc35815_local *lp = netdev_priv(dev); - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; -#ifdef TC35815_NAPI - u32 dmactl = tc_readl(&tr->DMA_Ctl); - - if (!(dmactl & DMA_IntMask)) { - /* disable interrupts */ - tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl); - if (netif_rx_schedule_prep(dev, &lp->napi)) - __netif_rx_schedule(dev, &lp->napi); - else { - printk(KERN_ERR "%s: interrupt taken in poll\n", - dev->name); - BUG(); - } - (void)tc_readl(&tr->Int_Src); /* flush */ - return IRQ_HANDLED; - } - return IRQ_NONE; -#else - int handled; - u32 status; - - spin_lock(&lp->lock); - status = tc_readl(&tr->Int_Src); - tc_writel(status, &tr->Int_Src); /* write to clear */ - handled = tc35815_do_interrupt(dev, status); - (void)tc_readl(&tr->Int_Src); /* flush */ - spin_unlock(&lp->lock); - return IRQ_RETVAL(handled >= 0); -#endif /* TC35815_NAPI */ -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void tc35815_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - tc35815_interrupt(dev->irq, dev); - enable_irq(dev->irq); -} -#endif - -/* We have a good packet(s), get it/them out of the buffers. */ -#ifdef TC35815_NAPI -static int -tc35815_rx(struct net_device *dev, int limit) -#else -static void -tc35815_rx(struct net_device *dev) -#endif -{ - struct tc35815_local *lp = dev->priv; - unsigned int fdctl; - int i; - int buf_free_count = 0; - int fd_free_count = 0; -#ifdef TC35815_NAPI - int received = 0; -#endif - - while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) { - int status = le32_to_cpu(lp->rfd_cur->fd.FDStat); - int pkt_len = fdctl & FD_FDLength_MASK; - int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; -#ifdef DEBUG - struct RxFD *next_rfd; -#endif -#if (RX_CTL_CMD & Rx_StripCRC) == 0 - pkt_len -= 4; -#endif - - if (netif_msg_rx_status(lp)) - dump_rxfd(lp->rfd_cur); - if (status & Rx_Good) { - struct sk_buff *skb; - unsigned char *data; - int cur_bd; -#ifdef TC35815_USE_PACKEDBUFFER - int offset; -#endif - -#ifdef TC35815_NAPI - if (--limit < 0) - break; -#endif -#ifdef TC35815_USE_PACKEDBUFFER - BUG_ON(bd_count > 2); - skb = dev_alloc_skb(pkt_len + 2); /* +2: for reserve */ - if (skb == NULL) { - printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", - dev->name); - lp->stats.rx_dropped++; - break; - } - skb_reserve(skb, 2); /* 16 bit alignment */ - - data = skb_put(skb, pkt_len); - - /* copy from receive buffer */ - cur_bd = 0; - offset = 0; - while (offset < pkt_len && cur_bd < bd_count) { - int len = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BDCtl) & - BD_BuffLength_MASK; - dma_addr_t dma = le32_to_cpu(lp->rfd_cur->bd[cur_bd].BuffData); - void *rxbuf = rxbuf_bus_to_virt(lp, dma); - if (offset + len > pkt_len) - len = pkt_len - offset; -#ifdef TC35815_DMA_SYNC_ONDEMAND - pci_dma_sync_single_for_cpu(lp->pci_dev, - dma, len, - PCI_DMA_FROMDEVICE); -#endif - memcpy(data + offset, rxbuf, len); -#ifdef TC35815_DMA_SYNC_ONDEMAND - pci_dma_sync_single_for_device(lp->pci_dev, - dma, len, - PCI_DMA_FROMDEVICE); -#endif - offset += len; - cur_bd++; - } -#else /* TC35815_USE_PACKEDBUFFER */ - BUG_ON(bd_count > 1); - cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl) - & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; -#ifdef DEBUG - if (cur_bd >= RX_BUF_NUM) { - printk("%s: invalid BDID.\n", dev->name); - panic_queues(dev); - } - BUG_ON(lp->rx_skbs[cur_bd].skb_dma != - (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3)); - if (!lp->rx_skbs[cur_bd].skb) { - printk("%s: NULL skb.\n", dev->name); - panic_queues(dev); - } -#else - BUG_ON(cur_bd >= RX_BUF_NUM); -#endif - skb = lp->rx_skbs[cur_bd].skb; - prefetch(skb->data); - lp->rx_skbs[cur_bd].skb = NULL; - lp->fbl_count--; - pci_unmap_single(lp->pci_dev, - lp->rx_skbs[cur_bd].skb_dma, - RX_BUF_SIZE, PCI_DMA_FROMDEVICE); - if (!HAVE_DMA_RXALIGN(lp)) - memmove(skb->data, skb->data - 2, pkt_len); - data = skb_put(skb, pkt_len); -#endif /* TC35815_USE_PACKEDBUFFER */ - if (netif_msg_pktdata(lp)) - print_eth(data); - skb->protocol = eth_type_trans(skb, dev); -#ifdef TC35815_NAPI - netif_receive_skb(skb); - received++; -#else - netif_rx(skb); -#endif - dev->last_rx = jiffies; - lp->stats.rx_packets++; - lp->stats.rx_bytes += pkt_len; - } else { - lp->stats.rx_errors++; - printk(KERN_DEBUG "%s: Rx error (status %x)\n", - dev->name, status & Rx_Stat_Mask); - /* WORKAROUND: LongErr and CRCErr means Overflow. */ - if ((status & Rx_LongErr) && (status & Rx_CRCErr)) { - status &= ~(Rx_LongErr|Rx_CRCErr); - status |= Rx_Over; - } - if (status & Rx_LongErr) lp->stats.rx_length_errors++; - if (status & Rx_Over) lp->stats.rx_fifo_errors++; - if (status & Rx_CRCErr) lp->stats.rx_crc_errors++; - if (status & Rx_Align) lp->stats.rx_frame_errors++; - } - - if (bd_count > 0) { - /* put Free Buffer back to controller */ - int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl); - unsigned char id = - (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; -#ifdef DEBUG - if (id >= RX_BUF_NUM) { - printk("%s: invalid BDID.\n", dev->name); - panic_queues(dev); - } -#else - BUG_ON(id >= RX_BUF_NUM); -#endif - /* free old buffers */ -#ifdef TC35815_USE_PACKEDBUFFER - while (lp->fbl_curid != id) -#else - while (lp->fbl_count < RX_BUF_NUM) -#endif - { -#ifdef TC35815_USE_PACKEDBUFFER - unsigned char curid = lp->fbl_curid; -#else - unsigned char curid = - (id + 1 + lp->fbl_count) % RX_BUF_NUM; -#endif - struct BDesc *bd = &lp->fbl_ptr->bd[curid]; -#ifdef DEBUG - bdctl = le32_to_cpu(bd->BDCtl); - if (bdctl & BD_CownsBD) { - printk("%s: Freeing invalid BD.\n", - dev->name); - panic_queues(dev); - } -#endif - /* pass BD to controller */ -#ifndef TC35815_USE_PACKEDBUFFER - if (!lp->rx_skbs[curid].skb) { - lp->rx_skbs[curid].skb = - alloc_rxbuf_skb(dev, - lp->pci_dev, - &lp->rx_skbs[curid].skb_dma); - if (!lp->rx_skbs[curid].skb) - break; /* try on next reception */ - bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma); - } -#endif /* TC35815_USE_PACKEDBUFFER */ - /* Note: BDLength was modified by chip. */ - bd->BDCtl = cpu_to_le32(BD_CownsBD | - (curid << BD_RxBDID_SHIFT) | - RX_BUF_SIZE); -#ifdef TC35815_USE_PACKEDBUFFER - lp->fbl_curid = (curid + 1) % RX_BUF_NUM; - if (netif_msg_rx_status(lp)) { - printk("%s: Entering new FBD %d\n", - dev->name, lp->fbl_curid); - dump_frfd(lp->fbl_ptr); - } -#else - lp->fbl_count++; -#endif - buf_free_count++; - } - } - - /* put RxFD back to controller */ -#ifdef DEBUG - next_rfd = fd_bus_to_virt(lp, - le32_to_cpu(lp->rfd_cur->fd.FDNext)); - if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) { - printk("%s: RxFD FDNext invalid.\n", dev->name); - panic_queues(dev); - } -#endif - for (i = 0; i < (bd_count + 1) / 2 + 1; i++) { - /* pass FD to controller */ -#ifdef DEBUG - lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead); -#else - lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL); -#endif - lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD); - lp->rfd_cur++; - fd_free_count++; - } - if (lp->rfd_cur > lp->rfd_limit) - lp->rfd_cur = lp->rfd_base; -#ifdef DEBUG - if (lp->rfd_cur != next_rfd) - printk("rfd_cur = %p, next_rfd %p\n", - lp->rfd_cur, next_rfd); -#endif - } - - /* re-enable BL/FDA Exhaust interrupts. */ - if (fd_free_count) { - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - u32 en, en_old = tc_readl(&tr->Int_En); - en = en_old | Int_FDAExEn; - if (buf_free_count) - en |= Int_BLExEn; - if (en != en_old) - tc_writel(en, &tr->Int_En); - } -#ifdef TC35815_NAPI - return received; -#endif -} - -#ifdef TC35815_NAPI -static int tc35815_poll(struct napi_struct *napi, int budget) -{ - struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi); - struct net_device *dev = lp->dev; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int received = 0, handled; - u32 status; - - spin_lock(&lp->lock); - status = tc_readl(&tr->Int_Src); - do { - tc_writel(status, &tr->Int_Src); /* write to clear */ - - handled = tc35815_do_interrupt(dev, status, limit); - if (handled >= 0) { - received += handled; - if (received >= budget) - break; - } - status = tc_readl(&tr->Int_Src); - } while (status); - spin_unlock(&lp->lock); - - if (received < budget) { - netif_rx_complete(dev, napi); - /* enable interrupts */ - tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl); - } - return received; -} -#endif - -#ifdef NO_CHECK_CARRIER -#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_LateColl|Tx_TxPar|Tx_SQErr) -#else -#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr) -#endif - -static void -tc35815_check_tx_stat(struct net_device *dev, int status) -{ - struct tc35815_local *lp = dev->priv; - const char *msg = NULL; - - /* count collisions */ - if (status & Tx_ExColl) - lp->stats.collisions += 16; - if (status & Tx_TxColl_MASK) - lp->stats.collisions += status & Tx_TxColl_MASK; - -#ifndef NO_CHECK_CARRIER - /* TX4939 does not have NCarr */ - if (lp->boardtype == TC35815_TX4939) - status &= ~Tx_NCarr; -#ifdef WORKAROUND_LOSTCAR - /* WORKAROUND: ignore LostCrS in full duplex operation */ - if ((lp->timer_state != asleep && lp->timer_state != lcheck) - || lp->fullduplex) - status &= ~Tx_NCarr; -#endif -#endif - - if (!(status & TX_STA_ERR)) { - /* no error. */ - lp->stats.tx_packets++; - return; - } - - lp->stats.tx_errors++; - if (status & Tx_ExColl) { - lp->stats.tx_aborted_errors++; - msg = "Excessive Collision."; - } - if (status & Tx_Under) { - lp->stats.tx_fifo_errors++; - msg = "Tx FIFO Underrun."; - if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) { - lp->lstats.tx_underrun++; - if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) { - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh); - msg = "Tx FIFO Underrun.Change Tx threshold to max."; - } - } - } - if (status & Tx_Defer) { - lp->stats.tx_fifo_errors++; - msg = "Excessive Deferral."; - } -#ifndef NO_CHECK_CARRIER - if (status & Tx_NCarr) { - lp->stats.tx_carrier_errors++; - msg = "Lost Carrier Sense."; - } -#endif - if (status & Tx_LateColl) { - lp->stats.tx_aborted_errors++; - msg = "Late Collision."; - } - if (status & Tx_TxPar) { - lp->stats.tx_fifo_errors++; - msg = "Transmit Parity Error."; - } - if (status & Tx_SQErr) { - lp->stats.tx_heartbeat_errors++; - msg = "Signal Quality Error."; - } - if (msg && netif_msg_tx_err(lp)) - printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status); -} - -/* This handles TX complete events posted by the device - * via interrupts. - */ -static void -tc35815_txdone(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct TxFD *txfd; - unsigned int fdctl; - - txfd = &lp->tfd_base[lp->tfd_end]; - while (lp->tfd_start != lp->tfd_end && - !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) { - int status = le32_to_cpu(txfd->fd.FDStat); - struct sk_buff *skb; - unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext); - u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem); - - if (netif_msg_tx_done(lp)) { - printk("%s: complete TxFD.\n", dev->name); - dump_txfd(txfd); - } - tc35815_check_tx_stat(dev, status); - - skb = fdsystem != 0xffffffff ? - lp->tx_skbs[fdsystem].skb : NULL; -#ifdef DEBUG - if (lp->tx_skbs[lp->tfd_end].skb != skb) { - printk("%s: tx_skbs mismatch.\n", dev->name); - panic_queues(dev); - } -#else - BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb); -#endif - if (skb) { - lp->stats.tx_bytes += skb->len; - pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE); - lp->tx_skbs[lp->tfd_end].skb = NULL; - lp->tx_skbs[lp->tfd_end].skb_dma = 0; -#ifdef TC35815_NAPI - dev_kfree_skb_any(skb); -#else - dev_kfree_skb_irq(skb); -#endif - } - txfd->fd.FDSystem = cpu_to_le32(0xffffffff); - - lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM; - txfd = &lp->tfd_base[lp->tfd_end]; -#ifdef DEBUG - if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) { - printk("%s: TxFD FDNext invalid.\n", dev->name); - panic_queues(dev); - } -#endif - if (fdnext & FD_Next_EOL) { - /* DMA Transmitter has been stopping... */ - if (lp->tfd_end != lp->tfd_start) { - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM; - struct TxFD* txhead = &lp->tfd_base[head]; - int qlen = (lp->tfd_start + TX_FD_NUM - - lp->tfd_end) % TX_FD_NUM; - -#ifdef DEBUG - if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) { - printk("%s: TxFD FDCtl invalid.\n", dev->name); - panic_queues(dev); - } -#endif - /* log max queue length */ - if (lp->lstats.max_tx_qlen < qlen) - lp->lstats.max_tx_qlen = qlen; - - - /* start DMA Transmitter again */ - txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL); -#ifdef GATHER_TXINT - txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); -#endif - if (netif_msg_tx_queued(lp)) { - printk("%s: start TxFD on queue.\n", - dev->name); - dump_txfd(txfd); - } - tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); - } - break; - } - } - - /* If we had stopped the queue due to a "tx full" - * condition, and space has now been made available, - * wake up the queue. - */ - if (netif_queue_stopped(dev) && ! tc35815_tx_full(dev)) - netif_wake_queue(dev); -} - -/* The inverse routine to tc35815_open(). */ -static int -tc35815_close(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - - netif_stop_queue(dev); -#ifdef TC35815_NAPI - napi_disable(&lp->napi); -#endif - - /* Flush the Tx and disable Rx here. */ - - del_timer(&lp->timer); /* Kill if running */ - tc35815_chip_reset(dev); - free_irq(dev->irq, dev); - - tc35815_free_queues(dev); - - return 0; - -} - -/* - * Get the current statistics. - * This may be called with the card open or closed. - */ -static struct net_device_stats *tc35815_get_stats(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - if (netif_running(dev)) { - /* Update the statistics from the device registers. */ - lp->stats.rx_missed_errors = tc_readl(&tr->Miss_Cnt); - } - - return &lp->stats; -} - -static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr) -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int cam_index = index * 6; - u32 cam_data; - u32 saved_addr; - saved_addr = tc_readl(&tr->CAM_Adr); - - if (netif_msg_hw(lp)) { - int i; - printk(KERN_DEBUG "%s: CAM %d:", dev->name, index); - for (i = 0; i < 6; i++) - printk(" %02x", addr[i]); - printk("\n"); - } - if (index & 1) { - /* read modify write */ - tc_writel(cam_index - 2, &tr->CAM_Adr); - cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000; - cam_data |= addr[0] << 8 | addr[1]; - tc_writel(cam_data, &tr->CAM_Data); - /* write whole word */ - tc_writel(cam_index + 2, &tr->CAM_Adr); - cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5]; - tc_writel(cam_data, &tr->CAM_Data); - } else { - /* write whole word */ - tc_writel(cam_index, &tr->CAM_Adr); - cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; - tc_writel(cam_data, &tr->CAM_Data); - /* read modify write */ - tc_writel(cam_index + 4, &tr->CAM_Adr); - cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff; - cam_data |= addr[4] << 24 | (addr[5] << 16); - tc_writel(cam_data, &tr->CAM_Data); - } - - tc_writel(saved_addr, &tr->CAM_Adr); -} - - -/* - * Set or clear the multicast filter for this adaptor. - * num_addrs == -1 Promiscuous mode, receive all packets - * num_addrs == 0 Normal mode, clear multicast list - * num_addrs > 0 Multicast mode, receive normal and MC packets, - * and do best-effort filtering. - */ -static void -tc35815_set_multicast_list(struct net_device *dev) -{ - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - - if (dev->flags&IFF_PROMISC) - { -#ifdef WORKAROUND_100HALF_PROMISC - /* With some (all?) 100MHalf HUB, controller will hang - * if we enabled promiscuous mode before linkup... */ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - if (!(tc_mdio_read(dev, pid, MII_BMSR) & BMSR_LSTATUS)) - return; -#endif - /* Enable promiscuous mode */ - tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl); - } - else if((dev->flags&IFF_ALLMULTI) || dev->mc_count > CAM_ENTRY_MAX - 3) - { - /* CAM 0, 1, 20 are reserved. */ - /* Disable promiscuous mode, use normal mode. */ - tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl); - } - else if(dev->mc_count) - { - struct dev_mc_list* cur_addr = dev->mc_list; - int i; - int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE); - - tc_writel(0, &tr->CAM_Ctl); - /* Walk the address list, and load the filter */ - for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) { - if (!cur_addr) - break; - /* entry 0,1 is reserved. */ - tc35815_set_cam_entry(dev, i + 2, cur_addr->dmi_addr); - ena_bits |= CAM_Ena_Bit(i + 2); - } - tc_writel(ena_bits, &tr->CAM_Ena); - tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); - } - else { - tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); - tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); - } -} - -static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - struct tc35815_local *lp = dev->priv; - strcpy(info->driver, MODNAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->bus_info, pci_name(lp->pci_dev)); -} - -static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct tc35815_local *lp = dev->priv; - spin_lock_irq(&lp->lock); - mii_ethtool_gset(&lp->mii, cmd); - spin_unlock_irq(&lp->lock); - return 0; -} - -static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct tc35815_local *lp = dev->priv; - int rc; -#if 1 /* use our negotiation method... */ - /* Verify the settings we care about. */ - if (cmd->autoneg != AUTONEG_ENABLE && - cmd->autoneg != AUTONEG_DISABLE) - return -EINVAL; - if (cmd->autoneg == AUTONEG_DISABLE && - ((cmd->speed != SPEED_100 && - cmd->speed != SPEED_10) || - (cmd->duplex != DUPLEX_HALF && - cmd->duplex != DUPLEX_FULL))) - return -EINVAL; - - /* Ok, do it to it. */ - spin_lock_irq(&lp->lock); - del_timer(&lp->timer); - tc35815_start_auto_negotiation(dev, cmd); - spin_unlock_irq(&lp->lock); - rc = 0; -#else - spin_lock_irq(&lp->lock); - rc = mii_ethtool_sset(&lp->mii, cmd); - spin_unlock_irq(&lp->lock); -#endif - return rc; -} - -static int tc35815_nway_reset(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int rc; - spin_lock_irq(&lp->lock); - rc = mii_nway_restart(&lp->mii); - spin_unlock_irq(&lp->lock); - return rc; -} - -static u32 tc35815_get_link(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int rc; - spin_lock_irq(&lp->lock); - rc = mii_link_ok(&lp->mii); - spin_unlock_irq(&lp->lock); - return rc; -} - -static u32 tc35815_get_msglevel(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - return lp->msg_enable; -} - -static void tc35815_set_msglevel(struct net_device *dev, u32 datum) -{ - struct tc35815_local *lp = dev->priv; - lp->msg_enable = datum; -} - -static int tc35815_get_sset_count(struct net_device *dev, int sset) -{ - struct tc35815_local *lp = dev->priv; - - switch (sset) { - case ETH_SS_STATS: - return sizeof(lp->lstats) / sizeof(int); - default: - return -EOPNOTSUPP; - } -} - -static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) -{ - struct tc35815_local *lp = dev->priv; - data[0] = lp->lstats.max_tx_qlen; - data[1] = lp->lstats.tx_ints; - data[2] = lp->lstats.rx_ints; - data[3] = lp->lstats.tx_underrun; -} - -static struct { - const char str[ETH_GSTRING_LEN]; -} ethtool_stats_keys[] = { - { "max_tx_qlen" }, - { "tx_ints" }, - { "rx_ints" }, - { "tx_underrun" }, -}; - -static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data) -{ - memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); -} - -static const struct ethtool_ops tc35815_ethtool_ops = { - .get_drvinfo = tc35815_get_drvinfo, - .get_settings = tc35815_get_settings, - .set_settings = tc35815_set_settings, - .nway_reset = tc35815_nway_reset, - .get_link = tc35815_get_link, - .get_msglevel = tc35815_get_msglevel, - .set_msglevel = tc35815_set_msglevel, - .get_strings = tc35815_get_strings, - .get_sset_count = tc35815_get_sset_count, - .get_ethtool_stats = tc35815_get_ethtool_stats, -}; - -static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct tc35815_local *lp = dev->priv; - int rc; - - if (!netif_running(dev)) - return -EINVAL; - - spin_lock_irq(&lp->lock); - rc = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL); - spin_unlock_irq(&lp->lock); - - return rc; -} - -static int tc_mdio_read(struct net_device *dev, int phy_id, int location) -{ - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - u32 data; - tc_writel(MD_CA_Busy | (phy_id << 5) | location, &tr->MD_CA); - while (tc_readl(&tr->MD_CA) & MD_CA_Busy) - ; - data = tc_readl(&tr->MD_Data); - return data & 0xffff; -} - -static void tc_mdio_write(struct net_device *dev, int phy_id, int location, - int val) -{ - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - tc_writel(val, &tr->MD_Data); - tc_writel(MD_CA_Busy | MD_CA_Wr | (phy_id << 5) | location, &tr->MD_CA); - while (tc_readl(&tr->MD_CA) & MD_CA_Busy) - ; -} - -/* Auto negotiation. The scheme is very simple. We have a timer routine - * that keeps watching the auto negotiation process as it progresses. - * The DP83840 is first told to start doing it's thing, we set up the time - * and place the timer state machine in it's initial state. - * - * Here the timer peeks at the DP83840 status registers at each click to see - * if the auto negotiation has completed, we assume here that the DP83840 PHY - * will time out at some point and just tell us what (didn't) happen. For - * complete coverage we only allow so many of the ticks at this level to run, - * when this has expired we print a warning message and try another strategy. - * This "other" strategy is to force the interface into various speed/duplex - * configurations and we stop when we see a link-up condition before the - * maximum number of "peek" ticks have occurred. - * - * Once a valid link status has been detected we configure the BigMAC and - * the rest of the Happy Meal to speak the most efficient protocol we could - * get a clean link for. The priority for link configurations, highest first - * is: - * 100 Base-T Full Duplex - * 100 Base-T Half Duplex - * 10 Base-T Full Duplex - * 10 Base-T Half Duplex - * - * We start a new timer now, after a successful auto negotiation status has - * been detected. This timer just waits for the link-up bit to get set in - * the BMCR of the DP83840. When this occurs we print a kernel log message - * describing the link type in use and the fact that it is up. - * - * If a fatal error of some sort is signalled and detected in the interrupt - * service routine, and the chip is reset, or the link is ifconfig'd down - * and then back up, this entire process repeats itself all over again. - */ -/* Note: Above comments are come from sunhme driver. */ - -static int tc35815_try_next_permutation(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short bmcr; - - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - - /* Downgrade from full to half duplex. Only possible via ethtool. */ - if (bmcr & BMCR_FULLDPLX) { - bmcr &= ~BMCR_FULLDPLX; - printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr); - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - return 0; - } - - /* Downgrade from 100 to 10. */ - if (bmcr & BMCR_SPEED100) { - bmcr &= ~BMCR_SPEED100; - printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr); - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - return 0; - } - - /* We've tried everything. */ - return -1; -} - -static void -tc35815_display_link_mode(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short lpa, bmcr; - char *speed = "", *duplex = ""; - - lpa = tc_mdio_read(dev, pid, MII_LPA); - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL))) - speed = "100Mb/s"; - else - speed = "10Mb/s"; - if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL))) - duplex = "Full Duplex"; - else - duplex = "Half Duplex"; - - if (netif_msg_link(lp)) - printk(KERN_INFO "%s: Link is up at %s, %s.\n", - dev->name, speed, duplex); - printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n", - dev->name, - bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa); -} - -static void tc35815_display_forced_link_mode(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short bmcr; - char *speed = "", *duplex = ""; - - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (bmcr & BMCR_SPEED100) - speed = "100Mb/s"; - else - speed = "10Mb/s"; - if (bmcr & BMCR_FULLDPLX) - duplex = "Full Duplex.\n"; - else - duplex = "Half Duplex.\n"; - - if (netif_msg_link(lp)) - printk(KERN_INFO "%s: Link has been forced up at %s, %s", - dev->name, speed, duplex); -} - -static void tc35815_set_link_modes(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int pid = lp->phy_addr; - unsigned short bmcr, lpa; - int speed; - - if (lp->timer_state == arbwait) { - lpa = tc_mdio_read(dev, pid, MII_LPA); - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n", - dev->name, - bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa); - if (!(lpa & (LPA_10HALF | LPA_10FULL | - LPA_100HALF | LPA_100FULL))) { - /* fall back to 10HALF */ - printk(KERN_INFO "%s: bad ability %04x - falling back to 10HD.\n", - dev->name, lpa); - lpa = LPA_10HALF; - } - if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL))) - lp->fullduplex = 1; - else - lp->fullduplex = 0; - if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL))) - speed = 100; - else - speed = 10; - } else { - /* Forcing a link mode. */ - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (bmcr & BMCR_FULLDPLX) - lp->fullduplex = 1; - else - lp->fullduplex = 0; - if (bmcr & BMCR_SPEED100) - speed = 100; - else - speed = 10; - } - - tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_HaltReq, &tr->MAC_Ctl); - if (lp->fullduplex) { - tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_FullDup, &tr->MAC_Ctl); - } else { - tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_FullDup, &tr->MAC_Ctl); - } - tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_HaltReq, &tr->MAC_Ctl); - - /* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */ - -#ifndef NO_CHECK_CARRIER - /* TX4939 does not have EnLCarr */ - if (lp->boardtype != TC35815_TX4939) { -#ifdef WORKAROUND_LOSTCAR - /* WORKAROUND: enable LostCrS only if half duplex operation */ - if (!lp->fullduplex && lp->boardtype != TC35815_TX4939) - tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, &tr->Tx_Ctl); -#endif - } -#endif - lp->mii.full_duplex = lp->fullduplex; -} - -static void tc35815_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short bmsr, bmcr, lpa; - int restart_timer = 0; - - spin_lock_irq(&lp->lock); - - lp->timer_ticks++; - switch (lp->timer_state) { - case arbwait: - /* - * Only allow for 5 ticks, thats 10 seconds and much too - * long to wait for arbitration to complete. - */ - /* TC35815 need more times... */ - if (lp->timer_ticks >= 10) { - /* Enter force mode. */ - if (!options.doforce) { - printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful," - " cable probblem?\n", dev->name); - /* Try to restart the adaptor. */ - tc35815_restart(dev); - goto out; - } - printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful," - " trying force link mode\n", dev->name); - printk(KERN_DEBUG "%s: BMCR %x BMSR %x\n", dev->name, - tc_mdio_read(dev, pid, MII_BMCR), - tc_mdio_read(dev, pid, MII_BMSR)); - bmcr = BMCR_SPEED100; - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - - /* - * OK, seems we need do disable the transceiver - * for the first tick to make sure we get an - * accurate link state at the second tick. - */ - - lp->timer_state = ltrywait; - lp->timer_ticks = 0; - restart_timer = 1; - } else { - /* Anything interesting happen? */ - bmsr = tc_mdio_read(dev, pid, MII_BMSR); - if (bmsr & BMSR_ANEGCOMPLETE) { - /* Just what we've been waiting for... */ - tc35815_set_link_modes(dev); - - /* - * Success, at least so far, advance our state - * engine. - */ - lp->timer_state = lupwait; - restart_timer = 1; - } else { - restart_timer = 1; - } - } - break; - - case lupwait: - /* - * Auto negotiation was successful and we are awaiting a - * link up status. I have decided to let this timer run - * forever until some sort of error is signalled, reporting - * a message to the user at 10 second intervals. - */ - bmsr = tc_mdio_read(dev, pid, MII_BMSR); - if (bmsr & BMSR_LSTATUS) { - /* - * Wheee, it's up, display the link mode in use and put - * the timer to sleep. - */ - tc35815_display_link_mode(dev); - netif_carrier_on(dev); -#ifdef WORKAROUND_100HALF_PROMISC - /* delayed promiscuous enabling */ - if (dev->flags & IFF_PROMISC) - tc35815_set_multicast_list(dev); -#endif -#if 1 - lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA); - lp->timer_state = lcheck; - restart_timer = 1; -#else - lp->timer_state = asleep; - restart_timer = 0; -#endif - } else { - if (lp->timer_ticks >= 10) { - printk(KERN_NOTICE "%s: Auto negotiation successful, link still " - "not completely up.\n", dev->name); - lp->timer_ticks = 0; - restart_timer = 1; - } else { - restart_timer = 1; - } - } - break; - - case ltrywait: - /* - * Making the timeout here too long can make it take - * annoyingly long to attempt all of the link mode - * permutations, but then again this is essentially - * error recovery code for the most part. - */ - bmsr = tc_mdio_read(dev, pid, MII_BMSR); - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (lp->timer_ticks == 1) { - /* - * Re-enable transceiver, we'll re-enable the - * transceiver next tick, then check link state - * on the following tick. - */ - restart_timer = 1; - break; - } - if (lp->timer_ticks == 2) { - restart_timer = 1; - break; - } - if (bmsr & BMSR_LSTATUS) { - /* Force mode selection success. */ - tc35815_display_forced_link_mode(dev); - netif_carrier_on(dev); - tc35815_set_link_modes(dev); -#ifdef WORKAROUND_100HALF_PROMISC - /* delayed promiscuous enabling */ - if (dev->flags & IFF_PROMISC) - tc35815_set_multicast_list(dev); -#endif -#if 1 - lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA); - lp->timer_state = lcheck; - restart_timer = 1; -#else - lp->timer_state = asleep; - restart_timer = 0; -#endif - } else { - if (lp->timer_ticks >= 4) { /* 6 seconds or so... */ - int ret; - - ret = tc35815_try_next_permutation(dev); - if (ret == -1) { - /* - * Aieee, tried them all, reset the - * chip and try all over again. - */ - printk(KERN_NOTICE "%s: Link down, " - "cable problem?\n", - dev->name); - - /* Try to restart the adaptor. */ - tc35815_restart(dev); - goto out; - } - lp->timer_ticks = 0; - restart_timer = 1; - } else { - restart_timer = 1; - } - } - break; - - case lcheck: - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - lpa = tc_mdio_read(dev, pid, MII_LPA); - if (bmcr & (BMCR_PDOWN | BMCR_ISOLATE | BMCR_RESET)) { - printk(KERN_ERR "%s: PHY down? (BMCR %x)\n", dev->name, - bmcr); - } else if ((lp->saved_lpa ^ lpa) & - (LPA_100FULL|LPA_100HALF|LPA_10FULL|LPA_10HALF)) { - printk(KERN_NOTICE "%s: link status changed" - " (BMCR %x LPA %x->%x)\n", dev->name, - bmcr, lp->saved_lpa, lpa); - } else { - /* go on */ - restart_timer = 1; - break; - } - /* Try to restart the adaptor. */ - tc35815_restart(dev); - goto out; - - case asleep: - default: - /* Can't happens.... */ - printk(KERN_ERR "%s: Aieee, link timer is asleep but we got " - "one anyways!\n", dev->name); - restart_timer = 0; - lp->timer_ticks = 0; - lp->timer_state = asleep; /* foo on you */ - break; - } - - if (restart_timer) { - lp->timer.expires = jiffies + msecs_to_jiffies(1200); - add_timer(&lp->timer); - } -out: - spin_unlock_irq(&lp->lock); -} - -static void tc35815_start_auto_negotiation(struct net_device *dev, - struct ethtool_cmd *ep) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short bmsr, bmcr, advertize; - int timeout; - - netif_carrier_off(dev); - bmsr = tc_mdio_read(dev, pid, MII_BMSR); - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - advertize = tc_mdio_read(dev, pid, MII_ADVERTISE); - - if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) { - if (options.speed || options.duplex) { - /* Advertise only specified configuration. */ - advertize &= ~(ADVERTISE_10HALF | - ADVERTISE_10FULL | - ADVERTISE_100HALF | - ADVERTISE_100FULL); - if (options.speed != 10) { - if (options.duplex != 1) - advertize |= ADVERTISE_100FULL; - if (options.duplex != 2) - advertize |= ADVERTISE_100HALF; - } - if (options.speed != 100) { - if (options.duplex != 1) - advertize |= ADVERTISE_10FULL; - if (options.duplex != 2) - advertize |= ADVERTISE_10HALF; - } - if (options.speed == 100) - bmcr |= BMCR_SPEED100; - else if (options.speed == 10) - bmcr &= ~BMCR_SPEED100; - if (options.duplex == 2) - bmcr |= BMCR_FULLDPLX; - else if (options.duplex == 1) - bmcr &= ~BMCR_FULLDPLX; - } else { - /* Advertise everything we can support. */ - if (bmsr & BMSR_10HALF) - advertize |= ADVERTISE_10HALF; - else - advertize &= ~ADVERTISE_10HALF; - if (bmsr & BMSR_10FULL) - advertize |= ADVERTISE_10FULL; - else - advertize &= ~ADVERTISE_10FULL; - if (bmsr & BMSR_100HALF) - advertize |= ADVERTISE_100HALF; - else - advertize &= ~ADVERTISE_100HALF; - if (bmsr & BMSR_100FULL) - advertize |= ADVERTISE_100FULL; - else - advertize &= ~ADVERTISE_100FULL; - } - - tc_mdio_write(dev, pid, MII_ADVERTISE, advertize); - - /* Enable Auto-Negotiation, this is usually on already... */ - bmcr |= BMCR_ANENABLE; - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - - /* Restart it to make sure it is going. */ - bmcr |= BMCR_ANRESTART; - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - printk(KERN_DEBUG "%s: ADVERTISE %x BMCR %x\n", dev->name, advertize, bmcr); - - /* BMCR_ANRESTART self clears when the process has begun. */ - timeout = 64; /* More than enough. */ - while (--timeout) { - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (!(bmcr & BMCR_ANRESTART)) - break; /* got it. */ - udelay(10); - } - if (!timeout) { - printk(KERN_ERR "%s: TC35815 would not start auto " - "negotiation BMCR=0x%04x\n", - dev->name, bmcr); - printk(KERN_NOTICE "%s: Performing force link " - "detection.\n", dev->name); - goto force_link; - } else { - printk(KERN_DEBUG "%s: auto negotiation started.\n", dev->name); - lp->timer_state = arbwait; - } - } else { -force_link: - /* Force the link up, trying first a particular mode. - * Either we are here at the request of ethtool or - * because the Happy Meal would not start to autoneg. - */ - - /* Disable auto-negotiation in BMCR, enable the duplex and - * speed setting, init the timer state machine, and fire it off. - */ - if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) { - bmcr = BMCR_SPEED100; - } else { - if (ep->speed == SPEED_100) - bmcr = BMCR_SPEED100; - else - bmcr = 0; - if (ep->duplex == DUPLEX_FULL) - bmcr |= BMCR_FULLDPLX; - } - tc_mdio_write(dev, pid, MII_BMCR, bmcr); - - /* OK, seems we need do disable the transceiver for the first - * tick to make sure we get an accurate link state at the - * second tick. - */ - lp->timer_state = ltrywait; - } - - del_timer(&lp->timer); - lp->timer_ticks = 0; - lp->timer.expires = jiffies + msecs_to_jiffies(1200); - add_timer(&lp->timer); -} - -static void tc35815_find_phy(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short id0; - - /* find MII phy */ - for (pid = 31; pid >= 0; pid--) { - id0 = tc_mdio_read(dev, pid, MII_BMSR); - if (id0 != 0xffff && id0 != 0x0000 && - (id0 & BMSR_RESV) != (0xffff & BMSR_RESV) /* paranoia? */ - ) { - lp->phy_addr = pid; - break; - } - } - if (pid < 0) { - printk(KERN_ERR "%s: No MII Phy found.\n", - dev->name); - lp->phy_addr = pid = 0; - } - - lp->mii_id[0] = tc_mdio_read(dev, pid, MII_PHYSID1); - lp->mii_id[1] = tc_mdio_read(dev, pid, MII_PHYSID2); - if (netif_msg_hw(lp)) - printk(KERN_INFO "%s: PHY(%02x) ID %04x %04x\n", dev->name, - pid, lp->mii_id[0], lp->mii_id[1]); -} - -static void tc35815_phy_chip_init(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - int pid = lp->phy_addr; - unsigned short bmcr; - struct ethtool_cmd ecmd, *ep; - - /* dis-isolate if needed. */ - bmcr = tc_mdio_read(dev, pid, MII_BMCR); - if (bmcr & BMCR_ISOLATE) { - int count = 32; - printk(KERN_DEBUG "%s: unisolating...", dev->name); - tc_mdio_write(dev, pid, MII_BMCR, bmcr & ~BMCR_ISOLATE); - while (--count) { - if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_ISOLATE)) - break; - udelay(20); - } - printk(" %s.\n", count ? "done" : "failed"); - } - - if (options.speed && options.duplex) { - ecmd.autoneg = AUTONEG_DISABLE; - ecmd.speed = options.speed == 10 ? SPEED_10 : SPEED_100; - ecmd.duplex = options.duplex == 1 ? DUPLEX_HALF : DUPLEX_FULL; - ep = &ecmd; - } else { - ep = NULL; - } - tc35815_start_auto_negotiation(dev, ep); -} - -static void tc35815_chip_reset(struct net_device *dev) -{ - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - int i; - /* reset the controller */ - tc_writel(MAC_Reset, &tr->MAC_Ctl); - udelay(4); /* 3200ns */ - i = 0; - while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) { - if (i++ > 100) { - printk(KERN_ERR "%s: MAC reset failed.\n", dev->name); - break; - } - mdelay(1); - } - tc_writel(0, &tr->MAC_Ctl); - - /* initialize registers to default value */ - tc_writel(0, &tr->DMA_Ctl); - tc_writel(0, &tr->TxThrsh); - tc_writel(0, &tr->TxPollCtr); - tc_writel(0, &tr->RxFragSize); - tc_writel(0, &tr->Int_En); - tc_writel(0, &tr->FDA_Bas); - tc_writel(0, &tr->FDA_Lim); - tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */ - tc_writel(0, &tr->CAM_Ctl); - tc_writel(0, &tr->Tx_Ctl); - tc_writel(0, &tr->Rx_Ctl); - tc_writel(0, &tr->CAM_Ena); - (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */ - - /* initialize internal SRAM */ - tc_writel(DMA_TestMode, &tr->DMA_Ctl); - for (i = 0; i < 0x1000; i += 4) { - tc_writel(i, &tr->CAM_Adr); - tc_writel(0, &tr->CAM_Data); - } - tc_writel(0, &tr->DMA_Ctl); -} - -static void tc35815_chip_init(struct net_device *dev) -{ - struct tc35815_local *lp = dev->priv; - struct tc35815_regs __iomem *tr = - (struct tc35815_regs __iomem *)dev->base_addr; - unsigned long txctl = TX_CTL_CMD; - - tc35815_phy_chip_init(dev); - - /* load station address to CAM */ - tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr); - - /* Enable CAM (broadcast and unicast) */ - tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); - tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); - - /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */ - if (HAVE_DMA_RXALIGN(lp)) - tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl); - else - tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl); -#ifdef TC35815_USE_PACKEDBUFFER - tc_writel(RxFrag_EnPack | ETH_ZLEN, &tr->RxFragSize); /* Packing */ -#else - tc_writel(ETH_ZLEN, &tr->RxFragSize); -#endif - tc_writel(0, &tr->TxPollCtr); /* Batch mode */ - tc_writel(TX_THRESHOLD, &tr->TxThrsh); - tc_writel(INT_EN_CMD, &tr->Int_En); - - /* set queues */ - tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas); - tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base, - &tr->FDA_Lim); - /* - * Activation method: - * First, enable the MAC Transmitter and the DMA Receive circuits. - * Then enable the DMA Transmitter and the MAC Receive circuits. - */ - tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */ - tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */ - - /* start MAC transmitter */ -#ifndef NO_CHECK_CARRIER - /* TX4939 does not have EnLCarr */ - if (lp->boardtype == TC35815_TX4939) - txctl &= ~Tx_EnLCarr; -#ifdef WORKAROUND_LOSTCAR - /* WORKAROUND: ignore LostCrS in full duplex operation */ - if ((lp->timer_state != asleep && lp->timer_state != lcheck) || - lp->fullduplex) - txctl &= ~Tx_EnLCarr; -#endif -#endif /* !NO_CHECK_CARRIER */ -#ifdef GATHER_TXINT - txctl &= ~Tx_EnComp; /* disable global tx completion int. */ -#endif - tc_writel(txctl, &tr->Tx_Ctl); -} - -#ifdef CONFIG_PM -static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct tc35815_local *lp = dev->priv; - unsigned long flags; - - pci_save_state(pdev); - if (!netif_running(dev)) - return 0; - netif_device_detach(dev); - spin_lock_irqsave(&lp->lock, flags); - del_timer(&lp->timer); /* Kill if running */ - tc35815_chip_reset(dev); - spin_unlock_irqrestore(&lp->lock, flags); - pci_set_power_state(pdev, PCI_D3hot); - return 0; -} - -static int tc35815_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct tc35815_local *lp = dev->priv; - unsigned long flags; - - pci_restore_state(pdev); - if (!netif_running(dev)) - return 0; - pci_set_power_state(pdev, PCI_D0); - spin_lock_irqsave(&lp->lock, flags); - tc35815_restart(dev); - spin_unlock_irqrestore(&lp->lock, flags); - netif_device_attach(dev); - return 0; -} -#endif /* CONFIG_PM */ - -static struct pci_driver tc35815_pci_driver = { - .name = MODNAME, - .id_table = tc35815_pci_tbl, - .probe = tc35815_init_one, - .remove = __devexit_p(tc35815_remove_one), -#ifdef CONFIG_PM - .suspend = tc35815_suspend, - .resume = tc35815_resume, -#endif -}; - -module_param_named(speed, options.speed, int, 0); -MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps"); -module_param_named(duplex, options.duplex, int, 0); -MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full"); -module_param_named(doforce, options.doforce, int, 0); -MODULE_PARM_DESC(doforce, "try force link mode if auto-negotiation failed"); - -static int __init tc35815_init_module(void) -{ - return pci_register_driver(&tc35815_pci_driver); -} - -static void __exit tc35815_cleanup_module(void) -{ - pci_unregister_driver(&tc35815_pci_driver); -} - -module_init(tc35815_init_module); -module_exit(tc35815_cleanup_module); - -MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver"); -MODULE_LICENSE("GPL"); |