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path: root/drivers/block/aoe/aoe.h
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Diffstat (limited to 'drivers/block/aoe/aoe.h')
-rw-r--r--drivers/block/aoe/aoe.h165
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]);