/* dmfe.c: Version 1.26 A Davicom DM9102 fast ethernet driver for Linux. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 1. Compiler command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c dmfe.c" The following steps teach you how to active DM9102 board: 1. Used the upper compiler command to compile dmfe.c 2. insert dmfe module into kernel "insmod dmfe" ;;Auto Detection Mode "insmod dmfe mode=0" ;;Force 10M Half Duplex "insmod dmfe mode=1" ;;Force 100M Half Duplex "insmod dmfe mode=4" ;;Force 10M Full Duplex "insmod dmfe mode=5" ;;Force 100M Full Duplex 3. config a dm9102 network interface "ifconfig eth0 172.22.3.18" 4. active the IP routing table "route add -net 172.22.3.0 eth0" 5. Well done. Your DM9102 adapter actived now. Author: Sten Wang, E-mail: sten_wang@davicom.com.tw Date: 10/28,1998 (C)Copyright 1997-1998 DAVICOM Semiconductor, Inc. All Rights Reserved. Marcelo Tosatti : Made it compile in 2.3 (device to net_device) Alan Cox : Removed the back compatibility support Reformatted, fixing spelling etc as I went Removed IRQ 0-15 assumption TODO Check and fix on 64bit and big endian boxes. Sort out the PCI latency. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Board/System/Debug information/definition ---------------- */ #define PCI_DM9102_ID 0x91021282 /* Davicom DM9102 ID */ #define PCI_DM9100_ID 0x91001282 /* Davicom DM9100 ID */ #define DMFE_SUCC 0 #define DM9102_IO_SIZE 0x80 #define TX_FREE_DESC_CNT 0x1 /* Tx packet count */ #define TX_DESC_CNT 0x10 /* Allocated Tx descriptors */ #define RX_DESC_CNT 0x10 /* Allocated Rx descriptors */ #define DESC_ALL_CNT TX_DESC_CNT+RX_DESC_CNT #define TX_BUF_ALLOC 0x600 #define RX_ALLOC_SIZE 0x620 #define DM910X_RESET 1 #define CR6_DEFAULT 0x002c0000 /* SF, MII, HD */ #define CR7_DEFAULT 0x1a2cd #define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */ #define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */ #define MAX_PACKET_SIZE 1514 #define DMFE_MAX_MULTICAST 14 #define RX_MAX_TRAFFIC 0x5000 #define MAX_CHECK_PACKET 0x8000 #define DMFE_10MHF 0 #define DMFE_100MHF 1 #define DMFE_10MFD 4 #define DMFE_100MFD 5 #define DMFE_AUTO 8 #define DMFE_TIMER_WUT jiffies+HZ*1 /* timer wakeup time : 1 second */ #define DMFE_TX_TIMEOUT HZ*2 /* tx packet time-out time */ #define DMFE_DBUG(dbug_now, msg, vaule) if (dmfe_debug || dbug_now) printk("DBUG: %s %x\n", msg, vaule) #define DELAY_5US udelay(5) /* udelay scale 1 usec */ #define DELAY_1US udelay(1) /* udelay scale 1 usec */ #define SHOW_MEDIA_TYPE(mode) printk("\n Change Speed to %sMhz %s duplex\n",mode & 1 ?"100":"10", mode & 4 ? "full":"half"); /* CR9 definition: SROM/MII */ #define CR9_SROM_READ 0x4800 #define CR9_SRCS 0x1 #define CR9_SRCLK 0x2 #define CR9_CRDOUT 0x8 #define SROM_DATA_0 0x0 #define SROM_DATA_1 0x4 #define PHY_DATA_1 0x20000 #define PHY_DATA_0 0x00000 #define MDCLKH 0x10000 #define SROM_CLK_WRITE(data, ioaddr) outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr);DELAY_5US;outl(data|CR9_SROM_READ|CR9_SRCS|CR9_SRCLK,ioaddr);DELAY_5US;outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr);DELAY_5US; /* Structure/enum declaration ------------------------------- */ struct tx_desc { u32 tdes0, tdes1, tdes2, tdes3; u32 tx_skb_ptr; u32 tx_buf_ptr; u32 next_tx_desc; u32 reserved; }; struct rx_desc { u32 rdes0, rdes1, rdes2, rdes3; u32 rx_skb_ptr; u32 rx_buf_ptr; u32 next_rx_desc; u32 reserved; }; struct dmfe_board_info { u32 chip_id; /* Chip vendor/Device ID */ u32 chip_revesion; /* Chip revesion */ struct net_device *next_dev; /* next device */ struct pci_dev *net_dev; /* PCI device */ u32 ioaddr; /* I/O base address */ u32 cr5_data; u32 cr6_data; u32 cr7_data; u32 cr15_data; /* descriptor pointer */ unsigned char *buf_pool_ptr; /* Tx buffer pool memory */ unsigned char *buf_pool_start; /* Tx buffer pool align dword */ unsigned char *desc_pool_ptr; /* descriptor pool memory */ struct tx_desc *first_tx_desc; struct tx_desc *tx_insert_ptr; struct tx_desc *tx_remove_ptr; struct rx_desc *first_rx_desc; struct rx_desc *rx_insert_ptr; struct rx_desc *rx_ready_ptr; /* packet come pointer */ u32 tx_packet_cnt; /* transmitted packet count */ u32 rx_avail_cnt; /* available rx descriptor count */ u32 interval_rx_cnt; /* rx packet count a callback time */ u8 media_mode; /* user specify media mode */ u8 op_mode; /* real work media mode */ u8 phy_addr; u8 link_failed; /* Ever link failed */ u8 wait_reset; /* Hardware failed, need to reset */ u8 in_reset_state; /* Now driver in reset routine */ u8 rx_error_cnt; /* recievd abnormal case count */ u8 dm910x_chk_mode; /* Operating mode check */ struct timer_list timer; struct enet_statistics stats; /* statistic counter */ unsigned char srom[128]; }; enum dmfe_offsets { DCR0 = 0, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20, DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48, DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70, DCR15 = 0x78 }; enum dmfe_CR6_bits { CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80, CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000, CR6_SFT = 0x200000, CR6_RXA = 0x40000000 }; /* Global variable declaration ----------------------------- */ static int dmfe_debug = 0; static unsigned char dmfe_media_mode = 8; static struct net_device *dmfe_root_dev = NULL; /* First device */ static u32 dmfe_cr6_user_set = 0; /* For module input parameter */ static int debug = 0; static u32 cr6set = 0; static unsigned char mode = 8; static u8 chkmode = 1; unsigned long CrcTable[256] = { 0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL, 0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L, 0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L, 0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L, 0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL, 0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L, 0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL, 0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L, 0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L, 0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL, 0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L, 0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L, 0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L, 0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL, 0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L, 0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL, 0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL, 0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L, 0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L, 0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L, 0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL, 0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L, 0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL, 0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L, 0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L, 0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL, 0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L, 0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L, 0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L, 0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL, 0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L, 0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL, 0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL, 0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L, 0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L, 0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L, 0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL, 0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L, 0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL, 0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L, 0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L, 0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL, 0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L, 0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L, 0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L, 0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL, 0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L, 0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL, 0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL, 0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L, 0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L, 0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L, 0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL, 0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L, 0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL, 0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L, 0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L, 0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL, 0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L, 0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L, 0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L, 0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL, 0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L, 0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL }; /* function declaration ------------------------------------- */ int dmfe_reg_board(struct net_device *); static int dmfe_open(struct net_device *); static int dmfe_start_xmit(struct sk_buff *, struct net_device *); static int dmfe_stop(struct net_device *); static struct enet_statistics *dmfe_get_stats(struct net_device *); static void dmfe_set_filter_mode(struct net_device *); static int dmfe_do_ioctl(struct net_device *, struct ifreq *, int); static u16 read_srom_word(long, int); static void dmfe_interrupt(int, void *, struct pt_regs *); static void dmfe_descriptor_init(struct dmfe_board_info *, u32); static void allocated_rx_buffer(struct dmfe_board_info *); static void update_cr6(u32, u32); static void send_filter_frame(struct net_device *, int); static u16 phy_read(u32, u8, u8); static void phy_write(u32, u8, u8, u16); static void phy_write_1bit(u32, u32); static u16 phy_read_1bit(u32); static void parser_ctrl_info(struct dmfe_board_info *); static void dmfe_sense_speed(struct dmfe_board_info *); static void dmfe_process_mode(struct dmfe_board_info *); static void dmfe_timer(unsigned long); static void dmfe_rx_packet(struct net_device *, struct dmfe_board_info *); static void dmfe_reused_skb(struct dmfe_board_info *, struct sk_buff *); static void dmfe_dynamic_reset(struct net_device *); static void dmfe_free_rxbuffer(struct dmfe_board_info *); static void dmfe_init_dm910x(struct net_device *); static unsigned long cal_CRC(unsigned char *, unsigned int); /* DM910X network board routine ---------------------------- */ /* * Search DM910X board, allocate space and register it */ int dmfe_reg_board(struct net_device *dev) { u32 pci_iobase; u16 dm9102_count = 0; u8 pci_irqline; static int index = 0; /* For multiple call */ struct dmfe_board_info *db; /* Point a board information structure */ int i; struct pci_dev *net_dev = NULL; DMFE_DBUG(0, "dmfe_reg_board()", 0); if (!pci_present()) return -ENODEV; index = 0; while ((net_dev = pci_find_class(PCI_CLASS_NETWORK_ETHERNET << 8, net_dev))) { u32 pci_id; u8 pci_cmd; index++; if (pci_read_config_dword(net_dev, PCI_VENDOR_ID, &pci_id) != DMFE_SUCC) continue; if (pci_id != PCI_DM9102_ID) continue; pci_iobase = net_dev->resource[0].start; pci_irqline = net_dev->irq; /* Enable Master/IO access, Disable memory access */ pci_set_master(net_dev); pci_read_config_byte(net_dev, PCI_COMMAND, &pci_cmd); pci_cmd |= PCI_COMMAND_IO; pci_cmd &= ~PCI_COMMAND_MEMORY; pci_write_config_byte(net_dev, PCI_COMMAND, pci_cmd); /* Set Latency Timer 80h */ /* FIXME: setting values > 32 breaks some SiS 559x stuff. Need a PCI quirk.. */ pci_write_config_byte(net_dev, PCI_LATENCY_TIMER, 0x80); /* IO range and interrupt check */ if (check_region(pci_iobase, DM9102_IO_SIZE)) /* IO range check */ continue; /* Found DM9102 card and PCI resource allocated OK */ dm9102_count++; /* Found a DM9102 card */ /* Init network device */ dev = init_etherdev(dev, 0); /* Allocated board information structure */ db = (void *) (kmalloc(sizeof(*db), GFP_KERNEL | GFP_DMA)); if(db==NULL) continue; /* Out of memory */ memset(db, 0, sizeof(*db)); dev->priv = db; /* link device and board info */ db->next_dev = dmfe_root_dev; dmfe_root_dev = dev; db->chip_id = pci_id; /* keep Chip vandor/Device ID */ db->ioaddr = pci_iobase; pci_read_config_dword(net_dev, 8, &db->chip_revesion); db->net_dev = net_dev; dev->base_addr = pci_iobase; dev->irq = pci_irqline; dev->open = &dmfe_open; dev->hard_start_xmit = &dmfe_start_xmit; dev->stop = &dmfe_stop; dev->get_stats = &dmfe_get_stats; dev->set_multicast_list = &dmfe_set_filter_mode; dev->do_ioctl = &dmfe_do_ioctl; request_region(pci_iobase, DM9102_IO_SIZE, dev->name); /* read 64 word srom data */ for (i = 0; i < 64; i++) ((u16 *) db->srom)[i] = read_srom_word(pci_iobase, i); /* Set Node address */ for (i = 0; i < 6; i++) dev->dev_addr[i] = db->srom[20 + i]; dev = 0; /* NULL device */ } #ifdef MODULE if (!dm9102_count) printk(KERN_WARNING "dmfe: Can't find DM910X board\n"); #endif return dm9102_count ? 0 : -ENODEV; } /* * Open the interface. * The interface is opened whenever "ifconfig" actives it. */ static int dmfe_open(struct net_device *dev) { struct dmfe_board_info *db = dev->priv; DMFE_DBUG(0, "dmfe_open", 0); if (request_irq(dev->irq, &dmfe_interrupt, SA_SHIRQ, dev->name, dev)) return -EAGAIN; /* Allocated Tx/Rx descriptor memory */ db->desc_pool_ptr = kmalloc(sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, GFP_KERNEL | GFP_DMA); if (db->desc_pool_ptr == NULL) return -ENOMEM; if ((u32) db->desc_pool_ptr & 0x1f) db->first_tx_desc = (struct tx_desc *) (((u32) db->desc_pool_ptr & ~0x1f) + 0x20); else db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr; /* Allocated Tx buffer memory */ db->buf_pool_ptr = kmalloc(TX_BUF_ALLOC * TX_DESC_CNT + 4, GFP_KERNEL | GFP_DMA); if (db->buf_pool_ptr == NULL) { kfree(db->desc_pool_ptr); return -ENOMEM; } if ((u32) db->buf_pool_ptr & 0x3) db->buf_pool_start = (char *) (((u32) db->buf_pool_ptr & ~0x3) + 0x4); else db->buf_pool_start = db->buf_pool_ptr; /* system variable init */ db->cr6_data = CR6_DEFAULT | dmfe_cr6_user_set; db->tx_packet_cnt = 0; db->rx_avail_cnt = 0; db->link_failed = 0; db->wait_reset = 0; db->in_reset_state = 0; db->rx_error_cnt = 0; if (chkmode && (db->chip_revesion < 0x02000030)) { db->dm910x_chk_mode = 1; /* Enter the check mode */ } else { db->dm910x_chk_mode = 4; /* Enter the normal mode */ } /* Initilize DM910X board */ dmfe_init_dm910x(dev); /* Active System Interface */ dev->tbusy = 0; /* Can transmit packet */ dev->start = 1; /* interface ready */ MOD_INC_USE_COUNT; /* set and active a timer process */ init_timer(&db->timer); db->timer.expires = DMFE_TIMER_WUT; db->timer.data = (unsigned long) dev; db->timer.function = &dmfe_timer; add_timer(&db->timer); return 0; } /* * Initialize DM910X board * Reset DM910X board * Initialize TX/Rx descriptor chain structure * Send the set-up frame * Enable Tx/Rx machine */ static void dmfe_init_dm910x(struct net_device *dev) { struct dmfe_board_info *db = dev->priv; u32 ioaddr = db->ioaddr; DMFE_DBUG(0, "dmfe_init_dm910x()", 0); /* Reset DM910x board : need 32 PCI clock to complete */ outl(DM910X_RESET, ioaddr + DCR0); DELAY_5US; outl(0, ioaddr + DCR0); outl(0x180, ioaddr + DCR12); /* Let bit 7 output port */ outl(0x80, ioaddr + DCR12); /* Reset DM9102 phyxcer */ outl(0x0, ioaddr + DCR12); /* Clear RESET signal */ /* Parser control information: Phy addr */ parser_ctrl_info(db); db->media_mode = dmfe_media_mode; if (db->media_mode & DMFE_AUTO) dmfe_sense_speed(db); else db->op_mode = db->media_mode; dmfe_process_mode(db); /* Initiliaze Transmit/Receive decriptor and CR3/4 */ dmfe_descriptor_init(db, ioaddr); /* Init CR6 to program DM910x operation */ update_cr6(db->cr6_data, ioaddr); /* Send setup frame */ send_filter_frame(dev, 0); /* Init CR5/CR7, interrupt active bit */ outl(0xffffffff, ioaddr + DCR5); /* clear all CR5 status */ db->cr7_data = CR7_DEFAULT; outl(db->cr7_data, ioaddr + DCR7); /* Init CR15, Tx jabber and Rx watchdog timer */ db->cr15_data = CR15_DEFAULT; outl(db->cr15_data, ioaddr + DCR15); /* Enable DM910X Tx/Rx function */ db->cr6_data |= CR6_RXSC | CR6_TXSC; update_cr6(db->cr6_data, ioaddr); } /* * Hardware start transmission. * Send a packet to media from the upper layer. */ static int dmfe_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct dmfe_board_info *db = dev->priv; struct tx_desc *txptr; DMFE_DBUG(0, "dmfe_start_xmit", 0); if ((dev->tbusy == 1) && (db->tx_packet_cnt != 0)) return 1; else dev->tbusy = 0; /* Too large packet check */ if (skb->len > MAX_PACKET_SIZE) { printk(KERN_ERR "%s: oversized frame (%d bytes) received.\n", dev->name, (u16) skb->len); dev_kfree_skb(skb); return 0; } /* No Tx resource check, it never happen nromally */ if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) { printk(KERN_WARNING "%s: No Tx resource, enter xmit() again \n", dev->name); dev_kfree_skb(skb); dev->tbusy = 1; return -EBUSY; } /* transmit this packet */ txptr = db->tx_insert_ptr; memcpy((char *) txptr->tx_buf_ptr, (char *) skb->data, skb->len); txptr->tdes1 = 0xe1000000 | skb->len; txptr->tdes0 = 0x80000000; /* set owner bit to DM910X */ /* Point to next transmit free descriptor */ db->tx_insert_ptr = (struct tx_desc *) txptr->next_tx_desc; /* transmit counter increase 1 */ db->tx_packet_cnt++; db->stats.tx_packets++; /* issue Tx polling command */ outl(0x1, dev->base_addr + DCR1); /* Tx resource check */ if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) dev->tbusy = 1; /* Set transmit time stamp */ dev->trans_start = jiffies; /* saved the time stamp */ /* free this SKB */ dev_kfree_skb(skb); return 0; } /* * Stop the interface. * The interface is stopped when it is brought. */ static int dmfe_stop(struct net_device *dev) { struct dmfe_board_info *db = dev->priv; u32 ioaddr = dev->base_addr; DMFE_DBUG(0, "dmfe_stop", 0); /* disable system */ dev->start = 0; /* interface disable */ dev->tbusy = 1; /* can't transmit */ /* Reset & stop DM910X board */ outl(DM910X_RESET, ioaddr + DCR0); DELAY_5US; /* deleted timer */ del_timer(&db->timer); /* free interrupt */ free_irq(dev->irq, dev); /* free allocated rx buffer */ dmfe_free_rxbuffer(db); /* free all descriptor memory and buffer memory */ kfree(db->desc_pool_ptr); kfree(db->buf_pool_ptr); MOD_DEC_USE_COUNT; return 0; } /* * DM9102 insterrupt handler * receive the packet to upper layer, free the transmitted packet */ static void dmfe_interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct net_device *dev = dev_id; struct tx_desc *txptr; struct dmfe_board_info *db; u32 ioaddr; if (!dev) { DMFE_DBUG(1, "dmfe_interrupt() without device arg", 0); return; } if (dev->interrupt) { DMFE_DBUG(1, "dmfe_interrupt() re-entry ", 0); return; } /* A real interrupt coming */ dev->interrupt = 1; /* Lock interrupt */ db = (struct dmfe_board_info *) dev->priv; ioaddr = dev->base_addr; DMFE_DBUG(0, "dmfe_interrupt()", 0); /* Disable all interrupt in CR7 to solve the interrupt edge problem */ outl(0, ioaddr + DCR7); /* Got DM910X status */ db->cr5_data = inl(ioaddr + DCR5); outl(db->cr5_data, ioaddr + DCR5); /* printk("CR5=%x\n", db->cr5_data); */ /* Check system status */ if (db->cr5_data & 0x2000) { /* A system bus error occurred */ DMFE_DBUG(1, "A system bus error occurred. CR5=", db->cr5_data); dev->tbusy = 1; db->wait_reset = 1; /* Need to RESET */ outl(0, ioaddr + DCR7); /* disable all interrupt */ dev->interrupt = 0; /* unlock interrupt */ return; } /* Free the transmitted descriptor */ txptr = db->tx_remove_ptr; while (db->tx_packet_cnt) { /* printk("tdes0=%x\n", txptr->tdes0); */ if (txptr->tdes0 & 0x80000000) break; if ((txptr->tdes0 & TDES0_ERR_MASK) && (txptr->tdes0 != 0x7fffffff)) { /* printk("tdes0=%x\n", txptr->tdes0); */ db->stats.tx_errors++; } txptr = (struct tx_desc *) txptr->next_tx_desc; db->tx_packet_cnt--; } db->tx_remove_ptr = (struct tx_desc *) txptr; if (dev->tbusy && (db->tx_packet_cnt < TX_FREE_DESC_CNT)) { dev->tbusy = 0; /* free a resource */ mark_bh(NET_BH); /* active bottom half */ } /* Received the coming packet */ if (db->rx_avail_cnt) dmfe_rx_packet(dev, db); /* reallocated rx descriptor buffer */ if (db->rx_avail_cnt < RX_DESC_CNT) allocated_rx_buffer(db); /* Mode Check */ if (db->dm910x_chk_mode & 0x2) { db->dm910x_chk_mode = 0x4; db->cr6_data |= 0x100; update_cr6(db->cr6_data, db->ioaddr); } dev->interrupt = 0; /* release interrupt lock */ /* Restore CR7 to enable interrupt mask */ if (db->interval_rx_cnt > RX_MAX_TRAFFIC) db->cr7_data = 0x1a28d; else db->cr7_data = 0x1a2cd; outl(db->cr7_data, ioaddr + DCR7); } /* * Receive the come packet and pass to upper layer */ static void dmfe_rx_packet(struct net_device *dev, struct dmfe_board_info *db) { struct rx_desc *rxptr; struct sk_buff *skb; int rxlen; rxptr = db->rx_ready_ptr; while (db->rx_avail_cnt) { if (rxptr->rdes0 & 0x80000000) /* packet owner check */ break; db->rx_avail_cnt--; db->interval_rx_cnt++; if ((rxptr->rdes0 & 0x300) != 0x300) { /* A packet without First/Last flag */ /* reused this SKB */ DMFE_DBUG(0, "Reused SK buffer, rdes0", rxptr->rdes0); dmfe_reused_skb(db, (struct sk_buff *) rxptr->rx_skb_ptr); db->rx_error_cnt++; } else { rxlen = ((rxptr->rdes0 >> 16) & 0x3fff) - 4; /* skip CRC */ /* A packet with First/Last flag */ if (rxptr->rdes0 & 0x8000) { /* error summary bit check */ /* This is a error packet */ /* printk("rdes0 error : %x \n", rxptr->rdes0); */ db->stats.rx_errors++; if (rxptr->rdes0 & 1) db->stats.rx_fifo_errors++; if (rxptr->rdes0 & 2) db->stats.rx_crc_errors++; if (rxptr->rdes0 & 0x80) db->stats.rx_length_errors++; } if (!(rxptr->rdes0 & 0x8000) || ((db->cr6_data & CR6_PM) && (rxlen > 6))) { skb = (struct sk_buff *) rxptr->rx_skb_ptr; /* Received Packet CRC check need or not */ if ((db->dm910x_chk_mode & 1) && (cal_CRC(skb->tail, rxlen) != (*(unsigned long *) (skb->tail + rxlen)))) { /* Found a error received packet */ dmfe_reused_skb(db, (struct sk_buff *) rxptr->rx_skb_ptr); db->dm910x_chk_mode = 3; } else { /* A good packet coming, send to upper layer */ skb->dev = dev; skb_put(skb, rxlen); skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); /* Send to upper layer */ /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ dev->last_rx = jiffies; db->stats.rx_packets++; } } else { DMFE_DBUG(0, "Reused SK buffer, rdes0", rxptr->rdes0); dmfe_reused_skb(db, (struct sk_buff *) rxptr->rx_skb_ptr); } } rxptr = (struct rx_desc *) rxptr->next_rx_desc; } db->rx_ready_ptr = rxptr; } /* * Get statistics from driver. */ static struct enet_statistics *dmfe_get_stats(struct net_device *dev) { struct dmfe_board_info *db = (struct dmfe_board_info *) dev->priv; DMFE_DBUG(0, "dmfe_get_stats", 0); return &db->stats; } /* * Set DM910X multicast address */ static void dmfe_set_filter_mode(struct net_device *dev) { struct dmfe_board_info *db = dev->priv; DMFE_DBUG(0, "dmfe_set_filter_mode()", 0); if (dev->flags & IFF_PROMISC) { DMFE_DBUG(0, "Enable PROM Mode", 0); db->cr6_data |= CR6_PM | CR6_PBF; update_cr6(db->cr6_data, db->ioaddr); return; } if (dev->flags & IFF_ALLMULTI || dev->mc_count > DMFE_MAX_MULTICAST) { DMFE_DBUG(0, "Pass all multicast address", dev->mc_count); db->cr6_data &= ~(CR6_PM | CR6_PBF); db->cr6_data |= CR6_PAM; return; } DMFE_DBUG(0, "Set multicast address", dev->mc_count); send_filter_frame(dev, dev->mc_count); } /* * Process the upper socket ioctl command */ static int dmfe_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { DMFE_DBUG(0, "dmfe_do_ioctl()", 0); return 0; } /* * A periodic timer routine * Dynamic media sense, allocated Rx buffer... */ static void dmfe_timer(unsigned long data) { u32 tmp_cr8; unsigned char tmp_cr12; struct net_device *dev = (struct net_device *) data; struct dmfe_board_info *db = (struct dmfe_board_info *) dev->priv; DMFE_DBUG(0, "dmfe_timer()", 0); /* Do reset now */ if (db->in_reset_state) return; /* Operating Mode Check */ if ((db->dm910x_chk_mode & 0x1) && (db->stats.rx_packets > MAX_CHECK_PACKET)) { db->dm910x_chk_mode = 0x4; } /* Dynamic reset DM910X : system error or transmit time-out */ tmp_cr8 = inl(db->ioaddr + DCR8); if ((db->interval_rx_cnt == 0) && (tmp_cr8)) { db->wait_reset = 1; /* printk("CR8 %x, Interval Rx %x\n", tmp_cr8, db->interval_rx_cnt); */ } /* Receiving Traffic check */ if (db->interval_rx_cnt > RX_MAX_TRAFFIC) db->cr7_data = 0x1a28d; else db->cr7_data = 0x1a2cd; outl(db->cr7_data, db->ioaddr + DCR7); db->interval_rx_cnt = 0; if (db->wait_reset | (db->tx_packet_cnt && ((jiffies - dev->trans_start) > DMFE_TX_TIMEOUT)) | (db->rx_error_cnt > 3)) { /* printk("wait_reset %x, tx cnt %x, rx err %x, time %x\n", db->wait_reset, db->tx_packet_cnt, db->rx_error_cnt, jiffies-dev->trans_start); */ DMFE_DBUG(0, "Warn!! Warn!! Tx/Rx moniotr step1", db->tx_packet_cnt); dmfe_dynamic_reset(dev); db->timer.expires = DMFE_TIMER_WUT; add_timer(&db->timer); return; } db->rx_error_cnt = 0; /* Clear previous counter */ /* Link status check, Dynamic media type change */ tmp_cr12 = inb(db->ioaddr + DCR12); if (db->chip_revesion == 0x02000030) { if (tmp_cr12 & 2) tmp_cr12 = 0x0; /* Link failed */ else tmp_cr12 = 0x3; /* Link OK */ } if (!(tmp_cr12 & 0x3) && !db->link_failed) { /* Link Failed */ DMFE_DBUG(0, "Link Failed", tmp_cr12); db->link_failed = 1; phy_write(db->ioaddr, db->phy_addr, 0, 0x8000); /* reset Phy controller */ } else if ((tmp_cr12 & 0x3) && db->link_failed) { DMFE_DBUG(0, "Link link OK", tmp_cr12); db->link_failed = 0; if (db->media_mode & DMFE_AUTO) dmfe_sense_speed(db); dmfe_process_mode(db); update_cr6(db->cr6_data, db->ioaddr); /* SHOW_MEDIA_TYPE(db->op_mode); */ } /* reallocated rx descriptor buffer */ if (db->rx_avail_cnt < RX_DESC_CNT) allocated_rx_buffer(db); /* Timer active again */ db->timer.expires = DMFE_TIMER_WUT; add_timer(&db->timer); } /* * Dynamic reset the DM910X board * Stop DM910X board * Free Tx/Rx allocated memory * Reset DM910X board * Re-initilize DM910X board */ static void dmfe_dynamic_reset(struct net_device *dev) { struct dmfe_board_info *db = dev->priv; DMFE_DBUG(0, "dmfe_dynamic_reset()", 0); /* Enter dynamic reset route */ db->in_reset_state = 1; /* Disable upper layer interface */ dev->tbusy = 1; /* transmit packet disable */ dev->start = 0; /* interface not ready */ db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */ update_cr6(db->cr6_data, dev->base_addr); /* Free Rx Allocate buffer */ dmfe_free_rxbuffer(db); /* system variable init */ db->tx_packet_cnt = 0; db->rx_avail_cnt = 0; db->link_failed = 0; db->wait_reset = 0; db->rx_error_cnt = 0; /* Re-initilize DM910X board */ dmfe_init_dm910x(dev); /* Restart upper layer interface */ dev->tbusy = 0; /* Can transmit packet */ dev->start = 1; /* interface ready */ /* Leave dynamic reser route */ db->in_reset_state = 0; } /* * Free all allocated rx buffer */ static void dmfe_free_rxbuffer(struct dmfe_board_info *db) { DMFE_DBUG(0, "dmfe_free_rxbuffer()", 0); /* free allocated rx buffer */ while (db->rx_avail_cnt) { dev_kfree_skb((void *) (db->rx_ready_ptr->rx_skb_ptr)); db->rx_ready_ptr = (struct rx_desc *) db->rx_ready_ptr->next_rx_desc; db->rx_avail_cnt--; } } /* * Reused the SK buffer */ static void dmfe_reused_skb(struct dmfe_board_info *db, struct sk_buff *skb) { struct rx_desc *rxptr = db->rx_insert_ptr; if (!(rxptr->rdes0 & 0x80000000)) { rxptr->rx_skb_ptr = (u32) skb; rxptr->rdes2 = virt_to_bus(skb->tail); rxptr->rdes0 = 0x80000000; db->rx_avail_cnt++; db->rx_insert_ptr = (struct rx_desc *) rxptr->next_rx_desc; } else DMFE_DBUG(0, "SK Buffer reused method error", db->rx_avail_cnt); } /* * Initialize transmit/Receive descriptor * Using Chain structure, and allocated Tx/Rx buffer */ static void dmfe_descriptor_init(struct dmfe_board_info *db, u32 ioaddr) { struct tx_desc *tmp_tx; struct rx_desc *tmp_rx; unsigned char *tmp_buf; int i; DMFE_DBUG(0, "dmfe_descriptor_init()", 0); /* tx descriptor start pointer */ db->tx_insert_ptr = db->first_tx_desc; db->tx_remove_ptr = db->first_tx_desc; outl(virt_to_bus(db->first_tx_desc), ioaddr + DCR4); /* Init CR4 */ /* rx descriptor start pointer */ db->first_rx_desc = (struct rx_desc *) ((u32) db->first_tx_desc + sizeof(struct rx_desc) * TX_DESC_CNT); db->rx_insert_ptr = db->first_rx_desc; db->rx_ready_ptr = db->first_rx_desc; outl(virt_to_bus(db->first_rx_desc), ioaddr + DCR3); /* Init CR3 */ /* Init Transmit chain */ tmp_buf = db->buf_pool_start; for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) { tmp_tx->tx_buf_ptr = (u32) tmp_buf; tmp_tx->tdes0 = 0; tmp_tx->tdes1 = 0x81000000; /* IC, chain */ tmp_tx->tdes2 = (u32) virt_to_bus(tmp_buf); tmp_tx->tdes3 = (u32) virt_to_bus(tmp_tx) + sizeof(struct tx_desc); tmp_tx->next_tx_desc = (u32) ((u32) tmp_tx + sizeof(struct tx_desc)); tmp_buf = (unsigned char *) ((u32) tmp_buf + TX_BUF_ALLOC); } (--tmp_tx)->tdes3 = (u32) virt_to_bus(db->first_tx_desc); tmp_tx->next_tx_desc = (u32) db->first_tx_desc; /* Init Receive descriptor chain */ for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) { tmp_rx->rdes0 = 0; tmp_rx->rdes1 = 0x01000600; tmp_rx->rdes3 = (u32) virt_to_bus(tmp_rx) + sizeof(struct rx_desc); tmp_rx->next_rx_desc = (u32) ((u32) tmp_rx + sizeof(struct rx_desc)); } (--tmp_rx)->rdes3 = (u32) virt_to_bus(db->first_rx_desc); tmp_rx->next_rx_desc = (u32) db->first_rx_desc; /* pre-allocated Rx buffer */ allocated_rx_buffer(db); } /* * Update CR6 vaule * Firstly stop DM910X , then written value and start */ static void update_cr6(u32 cr6_data, u32 ioaddr) { u32 cr6_tmp; cr6_tmp = cr6_data & ~0x2002; /* stop Tx/Rx */ outl(cr6_tmp, ioaddr + DCR6); DELAY_5US; outl(cr6_data, ioaddr + DCR6); cr6_tmp = inl(ioaddr + DCR6); /* printk("CR6 update %x ", cr6_tmp); */ } /* * Send a setup frame * This setup frame initilize DM910X addres filter mode */ static void send_filter_frame(struct net_device *dev, int mc_cnt) { struct dmfe_board_info *db = dev->priv; struct dev_mc_list *mcptr; struct tx_desc *txptr; u16 *addrptr; u32 *suptr; int i; DMFE_DBUG(0, "send_filetr_frame()", 0); txptr = db->tx_insert_ptr; suptr = (u32 *) txptr->tx_buf_ptr; /* broadcast address */ *suptr++ = 0xffff; *suptr++ = 0xffff; *suptr++ = 0xffff; /* Node address */ addrptr = (u16 *) dev->dev_addr; *suptr++ = addrptr[0]; *suptr++ = addrptr[1]; *suptr++ = addrptr[2]; /* fit the multicast address */ for (mcptr = dev->mc_list, i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { addrptr = (u16 *) mcptr->dmi_addr; *suptr++ = addrptr[0]; *suptr++ = addrptr[1]; *suptr++ = addrptr[2]; } for (; i < 14; i++) { *suptr++ = 0xffff; *suptr++ = 0xffff; *suptr++ = 0xffff; } /* prepare the setup frame */ db->tx_packet_cnt++; dev->tbusy = 1; txptr->tdes1 = 0x890000c0; txptr->tdes0 = 0x80000000; db->tx_insert_ptr = (struct tx_desc *) txptr->next_tx_desc; update_cr6(db->cr6_data | 0x2000, dev->base_addr); outl(0x1, dev->base_addr + DCR1); update_cr6(db->cr6_data, dev->base_addr); dev->trans_start = jiffies; } /* * Allocate rx buffer, * Allocate as many Rx buffers as possible. */ static void allocated_rx_buffer(struct dmfe_board_info *db) { struct rx_desc *rxptr; struct sk_buff *skb; rxptr = db->rx_insert_ptr; while (db->rx_avail_cnt < RX_DESC_CNT) { if ((skb = alloc_skb(RX_ALLOC_SIZE, GFP_ATOMIC)) == NULL) break; rxptr->rx_skb_ptr = (u32) skb; rxptr->rdes2 = virt_to_bus(skb->tail); rxptr->rdes0 = 0x80000000; rxptr = (struct rx_desc *) rxptr->next_rx_desc; db->rx_avail_cnt++; } db->rx_insert_ptr = rxptr; } /* * Read one word data from the serial ROM */ static u16 read_srom_word(long ioaddr, int offset) { int i; u16 srom_data = 0; long cr9_ioaddr = ioaddr + DCR9; outl(CR9_SROM_READ, cr9_ioaddr); outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr); /* Send the Read Command 110b */ SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr); SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr); SROM_CLK_WRITE(SROM_DATA_0, cr9_ioaddr); /* Send the offset */ for (i = 5; i >= 0; i--) { srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0; SROM_CLK_WRITE(srom_data, cr9_ioaddr); } outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr); for (i = 16; i > 0; i--) { outl(CR9_SROM_READ | CR9_SRCS | CR9_SRCLK, cr9_ioaddr); DELAY_5US; srom_data = (srom_data << 1) | ((inl(cr9_ioaddr) & CR9_CRDOUT) ? 1 : 0); outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr); DELAY_5US; } outl(CR9_SROM_READ, cr9_ioaddr); return srom_data; } /* * Parser Control media block to get Phy address */ static void parser_ctrl_info(struct dmfe_board_info *db) { int i; char *sdata = db->srom; unsigned char count; /* point to info leaf0 */ count = *(sdata + 33); /* Point to First media block */ sdata += 34; for (i = 0; i < count; i++) { if (*(sdata + 1) == 1) { db->phy_addr = *(sdata + 2); break; } sdata += ((unsigned char) *(sdata) & 0x7f) + 1; } if (i >= count) { printk("Can't found Control Block\n"); db->phy_addr = 1; } } /* * Auto sense the media mode */ static void dmfe_sense_speed(struct dmfe_board_info *db) { int i; u16 phy_mode; for (i = 1000; i; i--) { DELAY_5US; phy_mode = phy_read(db->ioaddr, db->phy_addr, 1); if ((phy_mode & 0x24) == 0x24) break; } if (i) { phy_mode = phy_read(db->ioaddr, db->phy_addr, 17) & 0xf000; /* printk("Phy_mode %x ",phy_mode); */ switch (phy_mode) { case 0x1000: db->op_mode = DMFE_10MHF; break; case 0x2000: db->op_mode = DMFE_10MFD; break; case 0x4000: db->op_mode = DMFE_100MHF; break; case 0x8000: db->op_mode = DMFE_100MFD; break; default: db->op_mode = DMFE_100MHF; DMFE_DBUG(1, "Media Type error, phy reg17", phy_mode); break; } } else { db->op_mode = DMFE_100MHF; DMFE_DBUG(0, "Link Failed :", phy_mode); } } /* * Process op-mode * AUTO mode : PHY controller in Auto-negotiation Mode * Force mode: PHY controller in force mode with HUB * N-way force capability with SWITCH */ static void dmfe_process_mode(struct dmfe_board_info *db) { u16 phy_reg; /* Full Duplex Mode Check */ db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */ if (db->op_mode & 0x4) db->cr6_data |= CR6_FDM; if (!(db->media_mode & DMFE_AUTO)) { /* Force Mode Check */ /* User force the media type */ phy_reg = phy_read(db->ioaddr, db->phy_addr, 5); /* printk("Nway phy_reg5 %x ",phy_reg); */ if (phy_reg & 0x1) { /* parter own the N-Way capability */ phy_reg = phy_read(db->ioaddr, db->phy_addr, 4) & ~0x1e0; switch (db->op_mode) { case DMFE_10MHF: phy_reg |= 0x20; break; case DMFE_10MFD: phy_reg |= 0x40; break; case DMFE_100MHF: phy_reg |= 0x80; break; case DMFE_100MFD: phy_reg |= 0x100; break; } phy_write(db->ioaddr, db->phy_addr, 4, phy_reg); } else { /* parter without the N-Way capability */ switch (db->op_mode) { case DMFE_10MHF: phy_reg = 0x0; break; case DMFE_10MFD: phy_reg = 0x100; break; case DMFE_100MHF: phy_reg = 0x2000; break; case DMFE_100MFD: phy_reg = 0x2100; break; } phy_write(db->ioaddr, db->phy_addr, 0, phy_reg); } } } /* * Write a word to Phy register */ static void phy_write(u32 iobase, u8 phy_addr, u8 offset, u16 phy_data) { u16 i; u32 ioaddr = iobase + DCR9; /* Send 33 synchronization clock to Phy controller */ for (i = 0; i < 35; i++) phy_write_1bit(ioaddr, PHY_DATA_1); /* Send start command(01) to Phy */ phy_write_1bit(ioaddr, PHY_DATA_0); phy_write_1bit(ioaddr, PHY_DATA_1); /* Send write command(01) to Phy */ phy_write_1bit(ioaddr, PHY_DATA_0); phy_write_1bit(ioaddr, PHY_DATA_1); /* Send Phy addres */ for (i = 0x10; i > 0; i = i >> 1) phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0); /* Send register addres */ for (i = 0x10; i > 0; i = i >> 1) phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0); /* written trasnition */ phy_write_1bit(ioaddr, PHY_DATA_1); phy_write_1bit(ioaddr, PHY_DATA_0); /* Write a word data to PHY controller */ for (i = 0x8000; i > 0; i >>= 1) phy_write_1bit(ioaddr, phy_data & i ? PHY_DATA_1 : PHY_DATA_0); } /* * Read a word data from phy register */ static u16 phy_read(u32 iobase, u8 phy_addr, u8 offset) { int i; u16 phy_data; u32 ioaddr = iobase + DCR9; /* Send 33 synchronization clock to Phy controller */ for (i = 0; i < 35; i++) phy_write_1bit(ioaddr, PHY_DATA_1); /* Send start command(01) to Phy */ phy_write_1bit(ioaddr, PHY_DATA_0); phy_write_1bit(ioaddr, PHY_DATA_1); /* Send read command(10) to Phy */ phy_write_1bit(ioaddr, PHY_DATA_1); phy_write_1bit(ioaddr, PHY_DATA_0); /* Send Phy addres */ for (i = 0x10; i > 0; i = i >> 1) phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0); /* Send register addres */ for (i = 0x10; i > 0; i = i >> 1) phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0); /* Skip transition state */ phy_read_1bit(ioaddr); /* read 16bit data */ for (phy_data = 0, i = 0; i < 16; i++) { phy_data <<= 1; phy_data |= phy_read_1bit(ioaddr); } return phy_data; } /* * Write one bit data to Phy Controller */ static void phy_write_1bit(u32 ioaddr, u32 phy_data) { outl(phy_data, ioaddr); /* MII Clock Low */ DELAY_1US; outl(phy_data | MDCLKH, ioaddr); /* MII Clock High */ DELAY_1US; outl(phy_data, ioaddr); /* MII Clock Low */ DELAY_1US; } /* * Read one bit phy data from PHY controller */ static u16 phy_read_1bit(u32 ioaddr) { u16 phy_data; outl(0x50000, ioaddr); DELAY_1US; phy_data = (inl(ioaddr) >> 19) & 0x1; outl(0x40000, ioaddr); DELAY_1US; return phy_data; } /* * Calculate the CRC valude of the Rx packet */ static unsigned long cal_CRC(unsigned char *Data, unsigned int Len) { unsigned long Crc = 0xffffffff; while (Len--) { Crc = CrcTable[(Crc ^ *Data++) & 0xFF] ^ (Crc >> 8); } return ~Crc; } #ifdef MODULE MODULE_AUTHOR("Sten Wang, sten_wang@davicom.com.tw"); MODULE_DESCRIPTION("Davicom DM910X fast ethernet driver"); MODULE_PARM(debug, "i"); MODULE_PARM(mode, "i"); MODULE_PARM(cr6set, "i"); MODULE_PARM(chkmode, "i"); /* Description: * when user used insmod to add module, system invoked init_module() * to initilize and register. */ int init_module(void) { DMFE_DBUG(0, "init_module() ", debug); if (debug) dmfe_debug = debug; /* set debug flag */ if (cr6set) dmfe_cr6_user_set = cr6set; switch (mode) { case 0: case 1: case 4: case 5: dmfe_media_mode = mode; break; default: dmfe_media_mode = 8; break; } return dmfe_reg_board(0); /* search board and register */ } /* * Description: * when user used rmmod to delete module, system invoked clean_module() * to un-register device. */ void cleanup_module(void) { struct net_device *next_dev; DMFE_DBUG(0, "clean_module()", 0); while (dmfe_root_dev) { next_dev = ((struct dmfe_board_info *) dmfe_root_dev->priv)->next_dev; unregister_netdev(dmfe_root_dev); release_region(dmfe_root_dev->base_addr, DM9102_IO_SIZE); kfree(dmfe_root_dev->priv); /* free board information */ kfree(dmfe_root_dev); /* free device structure */ dmfe_root_dev = next_dev; } DMFE_DBUG(0, "clean_module() exit", 0); } #endif /* MODULE */