linux-i2c-drive.rar_i2c ds1621驱动_i2c驱动 linux_linux i2c

/* 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux. Maintained by Jeff Garzik <jgarzik@pobox.com> Copyright 2000-2002 Jeff Garzik Much code comes from Donald Becker's rtl8139.c driver, versions 1.13 and older. This driver was originally based on rtl8139.c version 1.07. Header of rtl8139.c version 1.13: -----<snip>----- Written 1997-2001 by Donald Becker. This software may be used and distributed according to the terms of the GNU General Public License (GPL), incorporated herein by reference. Drivers based on or derived from this code fall under the GPL and must retain the authorship, copyright and license notice. This file is not a complete program and may only be used when the entire operating system is licensed under the GPL. This driver is for boards based on the RTL8129 and RTL8139 PCI ethernet chips. The author may be reached as becker@scyld.com, or C/O Scyld Computing Corporation 410 Severn Ave., Suite 210 Annapolis MD 21403 Support and updates available at http://www.scyld.com/network/rtl8139.html Twister-tuning table provided by Kinston <shangh@realtek.com.tw>. -----<snip>----- This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. Contributors: Donald Becker - he wrote the original driver, kudos to him! (but please don't e-mail him for support, this isn't his driver) Tigran Aivazian - bug fixes, skbuff free cleanup Martin Mares - suggestions for PCI cleanup David S. Miller - PCI DMA and softnet updates Ernst Gill - fixes ported from BSD driver Daniel Kobras - identified specific locations of posted MMIO write bugginess Gerard Sharp - bug fix, testing and feedback David Ford - Rx ring wrap fix Dan DeMaggio - swapped RTL8139 cards with me, and allowed me to find and fix a crucial bug on older chipsets. Donald Becker/Chris Butterworth/Marcus Westergren - Noticed various Rx packet size-related buglets. Santiago Garcia Mantinan - testing and feedback Jens David - 2.2.x kernel backports Martin Dennett - incredibly helpful insight on undocumented features of the 8139 chips Jean-Jacques Michel - bug fix Tobias Ringstr�m - Rx interrupt status checking suggestion Andrew Morton - Clear blocked signals, avoid buffer overrun setting current->comm. Kalle Olavi Niemitalo - Wake-on-LAN ioctls Robert Kuebel - Save kernel thread from dying on any signal. Submitting bug reports: "rtl8139-diag -mmmaaavvveefN" output enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log */ #define DRV_NAME "8139too" #define DRV_VERSION "0.9.27" #include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/compiler.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/rtnetlink.h> #include <linux/delay.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/completion.h> #include <linux/crc32.h> #include <asm/io.h> #include <asm/uaccess.h> #include <asm/irq.h> #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION #define PFX DRV_NAME ": " /* Default Message level */ #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ NETIF_MSG_PROBE | \ NETIF_MSG_LINK) /* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */ #ifdef CONFIG_8139TOO_PIO #define USE_IO_OPS 1 #endif /* define to 1 to enable copious debugging info */ #undef RTL8139_DEBUG /* define to 1 to disable lightweight runtime debugging checks */ #undef RTL8139_NDEBUG #ifdef RTL8139_DEBUG /* note: prints function name for you */ # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) #else # define DPRINTK(fmt, args...) #endif #ifdef RTL8139_NDEBUG # define assert(expr) do {} while (0) #else # define assert(expr) \ if(unlikely(!(expr))) { \ printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \ #expr,__FILE__,__FUNCTION__,__LINE__); \ } #endif /* A few user-configurable values. */ /* media options */ #define MAX_UNITS 8 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). The RTL chips use a 64 element hash table based on the Ethernet CRC. */ static int multicast_filter_limit = 32; /* bitmapped message enable number */ static int debug = -1; /* * Receive ring size * Warning: 64K ring has hardware issues and may lock up. */ #if defined(CONFIG_SH_DREAMCAST) #define RX_BUF_IDX 1 /* 16K ring */ #else #define RX_BUF_IDX 2 /* 32K ring */ #endif #define RX_BUF_LEN (8192 << RX_BUF_IDX) #define RX_BUF_PAD 16 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */ #if RX_BUF_LEN == 65536 #define RX_BUF_TOT_LEN RX_BUF_LEN #else #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD) #endif /* Number of Tx descriptor registers. */ #define NUM_TX_DESC 4 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ #define MAX_ETH_FRAME_SIZE 1536 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) /* PCI Tuning Parameters Threshold is bytes transferred to chip before transmission starts. */ #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */ /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */ #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */ #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */ /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ #define TX_TIMEOUT (6*HZ) enum { HAS_MII_XCVR = 0x010000, HAS_CHIP_XCVR = 0x020000, HAS_LNK_CHNG = 0x040000, }; #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */ #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */ #define RTL_MIN_IO_SIZE 0x80 #define RTL8139B_IO_SIZE 256 #define RTL8129_CAPS HAS_MII_XCVR #define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG typedef enum { RTL8139 = 0, RTL8129, } board_t; /* indexed by board_t, above */ static struct { const char *name; u32 hw_flags; } board_info[] __devinitdata = { { "RealTek RTL8139", RTL8139_CAPS }, { "RealTek RTL8129", RTL8129_CAPS }, }; static struct pci_device_id rtl8139_pci_tbl[] = { {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, #ifdef CONFIG_SH_SECUREEDGE5410