| /* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */ |
| #define VERSION "21" |
| #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 " \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]; |
| __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_GDALLOC = (1<<4), /* need to alloc gendisk */ |
| DEVFL_PAUSE = (1<<5), |
| DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */ |
| |
| 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 aoemajor, unsigned char aoeminor); |
| void aoecmd_ata_rsp(struct sk_buff *); |
| void aoecmd_cfg_rsp(struct sk_buff *); |
| void aoecmd_sleepwork(void *vp); |
| |
| int aoedev_init(void); |
| void aoedev_exit(void); |
| struct aoedev *aoedev_by_aoeaddr(int maj, int min); |
| struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt); |
| void aoedev_downdev(struct aoedev *d); |
| int aoedev_isbusy(struct aoedev *d); |
| |
| 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]); |