aoe.h
资源名称:block.rar [点击查看]
上传用户:ajay2009
上传日期:2009-05-22
资源大小:495k
文件大小:4k
源码类别:
驱动编程
开发平台:
Unix_Linux
- /* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */
- #define VERSION "12"
- #define AOE_MAJOR 152
- #define DEVICE_NAME "aoe"
- /* set AOE_PARTITIONS to 1 to use whole-disks only
- * default is 16, which is 15 partitions plus the whole disk
- */
- #ifndef AOE_PARTITIONS
- #define AOE_PARTITIONS (16)
- #endif
- #define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))
- #define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)
- #define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)
- #define WHITESPACE " tvfn"
- enum {
- AOECMD_ATA,
- AOECMD_CFG,
- AOEFL_RSP = (1<<3),
- AOEFL_ERR = (1<<2),
- AOEAFL_EXT = (1<<6),
- AOEAFL_DEV = (1<<4),
- AOEAFL_ASYNC = (1<<1),
- AOEAFL_WRITE = (1<<0),
- AOECCMD_READ = 0,
- AOECCMD_TEST,
- AOECCMD_PTEST,
- AOECCMD_SET,
- AOECCMD_FSET,
- AOE_HVER = 0x10,
- };
- struct aoe_hdr {
- unsigned char dst[6];
- unsigned char src[6];
- __be16 type;
- unsigned char verfl;
- unsigned char err;
- __be16 major;
- unsigned char minor;
- unsigned char cmd;
- __be32 tag;
- };
- struct aoe_atahdr {
- unsigned char aflags;
- unsigned char errfeat;
- unsigned char scnt;
- unsigned char cmdstat;
- unsigned char lba0;
- unsigned char lba1;
- unsigned char lba2;
- unsigned char lba3;
- unsigned char lba4;
- unsigned char lba5;
- unsigned char res[2];
- };
- struct aoe_cfghdr {
- __be16 bufcnt;
- __be16 fwver;
- unsigned char res;
- unsigned char aoeccmd;
- unsigned char cslen[2];
- };
- enum {
- DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */
- DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */
- DEVFL_EXT = (1<<2), /* device accepts lba48 commands */
- DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */
- DEVFL_WC_UPDATE = (1<<4), /* this device needs to update write cache status */
- DEVFL_WORKON = (1<<4),
- BUFFL_FAIL = 1,
- };
- enum {
- MAXATADATA = 1024,
- NPERSHELF = 16, /* number of slots per shelf address */
- FREETAG = -1,
- MIN_BUFS = 8,
- };
- struct buf {
- struct list_head bufs;
- ulong start_time; /* for disk stats */
- ulong flags;
- ulong nframesout;
- char *bufaddr;
- ulong resid;
- ulong bv_resid;
- sector_t sector;
- struct bio *bio;
- struct bio_vec *bv;
- };
- struct frame {
- int tag;
- ulong waited;
- struct buf *buf;
- char *bufaddr;
- int writedatalen;
- int ndata;
- /* largest possible */
- unsigned char data[sizeof(struct aoe_hdr) + sizeof(struct aoe_atahdr)];
- };
- struct aoedev {
- struct aoedev *next;
- unsigned char addr[6]; /* remote mac addr */
- ushort flags;
- ulong sysminor;
- ulong aoemajor;
- ulong aoeminor;
- ulong nopen; /* (bd_openers isn't available without sleeping) */
- ulong rttavg; /* round trip average of requests/responses */
- u16 fw_ver; /* version of blade's firmware */
- struct work_struct work;/* disk create work struct */
- struct gendisk *gd;
- request_queue_t blkq;
- struct hd_geometry geo;
- sector_t ssize;
- struct timer_list timer;
- spinlock_t lock;
- struct net_device *ifp; /* interface ed is attached to */
- struct sk_buff *sendq_hd; /* packets needing to be sent, list head */
- struct sk_buff *sendq_tl;
- mempool_t *bufpool; /* for deadlock-free Buf allocation */
- struct list_head bufq; /* queue of bios to work on */
- struct buf *inprocess; /* the one we're currently working on */
- ulong lasttag; /* last tag sent */
- ulong nframes; /* number of frames below */
- struct frame *frames;
- };
- int aoeblk_init(void);
- void aoeblk_exit(void);
- void aoeblk_gdalloc(void *);
- void aoedisk_rm_sysfs(struct aoedev *d);
- int aoechr_init(void);
- void aoechr_exit(void);
- void aoechr_error(char *);
- void aoecmd_work(struct aoedev *d);
- void aoecmd_cfg(ushort, unsigned char);
- void aoecmd_ata_rsp(struct sk_buff *);
- void aoecmd_cfg_rsp(struct sk_buff *);
- int aoedev_init(void);
- void aoedev_exit(void);
- struct aoedev *aoedev_by_aoeaddr(int maj, int min);
- void aoedev_downdev(struct aoedev *d);
- struct aoedev *aoedev_set(ulong, unsigned char *, struct net_device *, ulong);
- int aoedev_busy(void);
- int aoenet_init(void);
- void aoenet_exit(void);
- void aoenet_xmit(struct sk_buff *);
- int is_aoe_netif(struct net_device *ifp);
- int set_aoe_iflist(const char __user *str, size_t size);
- u64 mac_addr(char addr[6]);