diff options
Diffstat (limited to 'drivers/block/aoe/aoe.h')
| -rw-r--r-- | drivers/block/aoe/aoe.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h new file mode 100644 index 00000000000..db78f826d40 --- /dev/null +++ b/drivers/block/aoe/aoe.h @@ -0,0 +1,165 @@ +/* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */ +#define VERSION "5" +#define AOE_MAJOR 152 +#define DEVICE_NAME "aoe" +#ifndef AOE_PARTITIONS +#define AOE_PARTITIONS 16 +#endif +#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * 10 + (aoeminor)) +#define AOEMAJOR(sysminor) ((sysminor) / 10) +#define AOEMINOR(sysminor) ((sysminor) % 10) +#define WHITESPACE " \t\v\f\n" + +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]; + unsigned char type[2]; + unsigned char verfl; + unsigned char err; + unsigned char major[2]; + unsigned char minor; + unsigned char cmd; + unsigned char tag[4]; +}; + +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 { + unsigned char bufcnt[2]; + unsigned char fwver[2]; + 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 = 10, + FREETAG = -1, + MIN_BUFS = 8, +}; + +struct buf { + struct list_head bufs; + 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 *skblist;/* packets needing to be sent */ + 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_bymac(unsigned char *); +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]); |