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Diffstat (limited to 'kernel/include/linux/arcdevice.h')
-rw-r--r-- | kernel/include/linux/arcdevice.h | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/kernel/include/linux/arcdevice.h b/kernel/include/linux/arcdevice.h deleted file mode 100644 index df0356220..000000000 --- a/kernel/include/linux/arcdevice.h +++ /dev/null @@ -1,342 +0,0 @@ -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. NET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * Definitions used by the ARCnet driver. - * - * Authors: Avery Pennarun and David Woodhouse - * - * 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; either version - * 2 of the License, or (at your option) any later version. - * - */ -#ifndef _LINUX_ARCDEVICE_H -#define _LINUX_ARCDEVICE_H - -#include <asm/timex.h> -#include <linux/if_arcnet.h> - -#ifdef __KERNEL__ -#include <linux/irqreturn.h> - -/* - * RECON_THRESHOLD is the maximum number of RECON messages to receive - * within one minute before printing a "cabling problem" warning. The - * default value should be fine. - * - * After that, a "cabling restored" message will be printed on the next IRQ - * if no RECON messages have been received for 10 seconds. - * - * Do not define RECON_THRESHOLD at all if you want to disable this feature. - */ -#define RECON_THRESHOLD 30 - - -/* - * Define this to the minimum "timeout" value. If a transmit takes longer - * than TX_TIMEOUT jiffies, Linux will abort the TX and retry. On a large - * network, or one with heavy network traffic, this timeout may need to be - * increased. The larger it is, though, the longer it will be between - * necessary transmits - don't set this too high. - */ -#define TX_TIMEOUT (HZ * 200 / 1000) - - -/* Display warnings about the driver being an ALPHA version. */ -#undef ALPHA_WARNING - - -/* - * Debugging bitflags: each option can be enabled individually. - * - * Note: only debug flags included in the ARCNET_DEBUG_MAX define will - * actually be available. GCC will (at least, GCC 2.7.0 will) notice - * lines using a BUGLVL not in ARCNET_DEBUG_MAX and automatically optimize - * them out. - */ -#define D_NORMAL 1 /* important operational info */ -#define D_EXTRA 2 /* useful, but non-vital information */ -#define D_INIT 4 /* show init/probe messages */ -#define D_INIT_REASONS 8 /* show reasons for discarding probes */ -#define D_RECON 32 /* print a message whenever token is lost */ -#define D_PROTO 64 /* debug auto-protocol support */ -/* debug levels below give LOTS of output during normal operation! */ -#define D_DURING 128 /* trace operations (including irq's) */ -#define D_TX 256 /* show tx packets */ -#define D_RX 512 /* show rx packets */ -#define D_SKB 1024 /* show skb's */ -#define D_SKB_SIZE 2048 /* show skb sizes */ -#define D_TIMING 4096 /* show time needed to copy buffers to card */ -#define D_DEBUG 8192 /* Very detailed debug line for line */ - -#ifndef ARCNET_DEBUG_MAX -#define ARCNET_DEBUG_MAX (127) /* change to ~0 if you want detailed debugging */ -#endif - -#ifndef ARCNET_DEBUG -#define ARCNET_DEBUG (D_NORMAL|D_EXTRA) -#endif -extern int arcnet_debug; - -/* macros to simplify debug checking */ -#define BUGLVL(x) if ((ARCNET_DEBUG_MAX)&arcnet_debug&(x)) -#define BUGMSG2(x,msg,args...) do { BUGLVL(x) printk(msg, ## args); } while (0) -#define BUGMSG(x,msg,args...) \ - BUGMSG2(x, "%s%6s: " msg, \ - x==D_NORMAL ? KERN_WARNING \ - : x < D_DURING ? KERN_INFO : KERN_DEBUG, \ - dev->name , ## args) - -/* see how long a function call takes to run, expressed in CPU cycles */ -#define TIME(name, bytes, call) BUGLVL(D_TIMING) { \ - unsigned long _x, _y; \ - _x = get_cycles(); \ - call; \ - _y = get_cycles(); \ - BUGMSG(D_TIMING, \ - "%s: %d bytes in %lu cycles == " \ - "%lu Kbytes/100Mcycle\n",\ - name, bytes, _y - _x, \ - 100000000 / 1024 * bytes / (_y - _x + 1));\ - } \ - else { \ - call;\ - } - - -/* - * Time needed to reset the card - in ms (milliseconds). This works on my - * SMC PC100. I can't find a reference that tells me just how long I - * should wait. - */ -#define RESETtime (300) - -/* - * These are the max/min lengths of packet payload, not including the - * arc_hardware header, but definitely including the soft header. - * - * Note: packet sizes 254, 255, 256 are impossible because of the way - * ARCnet registers work That's why RFC1201 defines "exception" packets. - * In non-RFC1201 protocols, we have to just tack some extra bytes on the - * end. - */ -#define MTU 253 /* normal packet max size */ -#define MinTU 257 /* extended packet min size */ -#define XMTU 508 /* extended packet max size */ - -/* status/interrupt mask bit fields */ -#define TXFREEflag 0x01 /* transmitter available */ -#define TXACKflag 0x02 /* transmitted msg. ackd */ -#define RECONflag 0x04 /* network reconfigured */ -#define TESTflag 0x08 /* test flag */ -#define EXCNAKflag 0x08 /* excesive nak flag */ -#define RESETflag 0x10 /* power-on-reset */ -#define RES1flag 0x20 /* reserved - usually set by jumper */ -#define RES2flag 0x40 /* reserved - usually set by jumper */ -#define NORXflag 0x80 /* receiver inhibited */ - -/* Flags used for IO-mapped memory operations */ -#define AUTOINCflag 0x40 /* Increase location with each access */ -#define IOMAPflag 0x02 /* (for 90xx) Use IO mapped memory, not mmap */ -#define ENABLE16flag 0x80 /* (for 90xx) Enable 16-bit mode */ - -/* in the command register, the following bits have these meanings: - * 0-2 command - * 3-4 page number (for enable rcv/xmt command) - * 7 receive broadcasts - */ -#define NOTXcmd 0x01 /* disable transmitter */ -#define NORXcmd 0x02 /* disable receiver */ -#define TXcmd 0x03 /* enable transmitter */ -#define RXcmd 0x04 /* enable receiver */ -#define CONFIGcmd 0x05 /* define configuration */ -#define CFLAGScmd 0x06 /* clear flags */ -#define TESTcmd 0x07 /* load test flags */ - -/* flags for "clear flags" command */ -#define RESETclear 0x08 /* power-on-reset */ -#define CONFIGclear 0x10 /* system reconfigured */ - -#define EXCNAKclear 0x0E /* Clear and acknowledge the excive nak bit */ - -/* flags for "load test flags" command */ -#define TESTload 0x08 /* test flag (diagnostic) */ - -/* byte deposited into first address of buffers on reset */ -#define TESTvalue 0321 /* that's octal for 0xD1 :) */ - -/* for "enable receiver" command */ -#define RXbcasts 0x80 /* receive broadcasts */ - -/* flags for "define configuration" command */ -#define NORMALconf 0x00 /* 1-249 byte packets */ -#define EXTconf 0x08 /* 250-504 byte packets */ - -/* card feature flags, set during auto-detection. - * (currently only used by com20020pci) - */ -#define ARC_IS_5MBIT 1 /* card default speed is 5MBit */ -#define ARC_CAN_10MBIT 2 /* card uses COM20022, supporting 10MBit, - but default is 2.5MBit. */ - - -/* information needed to define an encapsulation driver */ -struct ArcProto { - char suffix; /* a for RFC1201, e for ether-encap, etc. */ - int mtu; /* largest possible packet */ - int is_ip; /* This is a ip plugin - not a raw thing */ - - void (*rx) (struct net_device * dev, int bufnum, - struct archdr * pkthdr, int length); - int (*build_header) (struct sk_buff * skb, struct net_device *dev, - unsigned short ethproto, uint8_t daddr); - - /* these functions return '1' if the skb can now be freed */ - int (*prepare_tx) (struct net_device * dev, struct archdr * pkt, int length, - int bufnum); - int (*continue_tx) (struct net_device * dev, int bufnum); - int (*ack_tx) (struct net_device * dev, int acked); -}; - -extern struct ArcProto *arc_proto_map[256], *arc_proto_default, - *arc_bcast_proto, *arc_raw_proto; - - -/* - * "Incoming" is information needed for each address that could be sending - * to us. Mostly for partially-received split packets. - */ -struct Incoming { - struct sk_buff *skb; /* packet data buffer */ - __be16 sequence; /* sequence number of assembly */ - uint8_t lastpacket, /* number of last packet (from 1) */ - numpackets; /* number of packets in split */ -}; - - -/* only needed for RFC1201 */ -struct Outgoing { - struct ArcProto *proto; /* protocol driver that owns this: - * if NULL, no packet is pending. - */ - struct sk_buff *skb; /* buffer from upper levels */ - struct archdr *pkt; /* a pointer into the skb */ - uint16_t length, /* bytes total */ - dataleft, /* bytes left */ - segnum, /* segment being sent */ - numsegs; /* number of segments */ -}; - - -struct arcnet_local { - uint8_t config, /* current value of CONFIG register */ - timeout, /* Extended timeout for COM20020 */ - backplane, /* Backplane flag for COM20020 */ - clockp, /* COM20020 clock divider */ - clockm, /* COM20020 clock multiplier flag */ - setup, /* Contents of setup1 register */ - setup2, /* Contents of setup2 register */ - intmask; /* current value of INTMASK register */ - uint8_t default_proto[256]; /* default encap to use for each host */ - int cur_tx, /* buffer used by current transmit, or -1 */ - next_tx, /* buffer where a packet is ready to send */ - cur_rx; /* current receive buffer */ - int lastload_dest, /* can last loaded packet be acked? */ - lasttrans_dest; /* can last TX'd packet be acked? */ - int timed_out; /* need to process TX timeout and drop packet */ - unsigned long last_timeout; /* time of last reported timeout */ - char *card_name; /* card ident string */ - int card_flags; /* special card features */ - - - /* On preemtive and SMB a lock is needed */ - spinlock_t lock; - - /* - * Buffer management: an ARCnet card has 4 x 512-byte buffers, each of - * which can be used for either sending or receiving. The new dynamic - * buffer management routines use a simple circular queue of available - * buffers, and take them as they're needed. This way, we simplify - * situations in which we (for example) want to pre-load a transmit - * buffer, or start receiving while we copy a received packet to - * memory. - * - * The rules: only the interrupt handler is allowed to _add_ buffers to - * the queue; thus, this doesn't require a lock. Both the interrupt - * handler and the transmit function will want to _remove_ buffers, so - * we need to handle the situation where they try to do it at the same - * time. - * - * If next_buf == first_free_buf, the queue is empty. Since there are - * only four possible buffers, the queue should never be full. - */ - atomic_t buf_lock; - int buf_queue[5]; - int next_buf, first_free_buf; - - /* network "reconfiguration" handling */ - unsigned long first_recon; /* time of "first" RECON message to count */ - unsigned long last_recon; /* time of most recent RECON */ - int num_recons; /* number of RECONs between first and last. */ - int network_down; /* do we think the network is down? */ - - int excnak_pending; /* We just got an excesive nak interrupt */ - - struct { - uint16_t sequence; /* sequence number (incs with each packet) */ - __be16 aborted_seq; - - struct Incoming incoming[256]; /* one from each address */ - } rfc1201; - - /* really only used by rfc1201, but we'll pretend it's not */ - struct Outgoing outgoing; /* packet currently being sent */ - - /* hardware-specific functions */ - struct { - struct module *owner; - void (*command) (struct net_device * dev, int cmd); - int (*status) (struct net_device * dev); - void (*intmask) (struct net_device * dev, int mask); - int (*reset) (struct net_device * dev, int really_reset); - void (*open) (struct net_device * dev); - void (*close) (struct net_device * dev); - - void (*copy_to_card) (struct net_device * dev, int bufnum, int offset, - void *buf, int count); - void (*copy_from_card) (struct net_device * dev, int bufnum, int offset, - void *buf, int count); - } hw; - - void __iomem *mem_start; /* pointer to ioremap'ed MMIO */ -}; - - -#define ARCRESET(x) (lp->hw.reset(dev, (x))) -#define ACOMMAND(x) (lp->hw.command(dev, (x))) -#define ASTATUS() (lp->hw.status(dev)) -#define AINTMASK(x) (lp->hw.intmask(dev, (x))) - - - -#if ARCNET_DEBUG_MAX & D_SKB -void arcnet_dump_skb(struct net_device *dev, struct sk_buff *skb, char *desc); -#else -#define arcnet_dump_skb(dev,skb,desc) ; -#endif - -void arcnet_unregister_proto(struct ArcProto *proto); -irqreturn_t arcnet_interrupt(int irq, void *dev_id); -struct net_device *alloc_arcdev(const char *name); - -int arcnet_open(struct net_device *dev); -int arcnet_close(struct net_device *dev); -netdev_tx_t arcnet_send_packet(struct sk_buff *skb, - struct net_device *dev); -void arcnet_timeout(struct net_device *dev); - -#endif /* __KERNEL__ */ -#endif /* _LINUX_ARCDEVICE_H */ |