diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/block/aoe/aoe.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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 000000000000..db78f826d40c --- /dev/null +++ b/drivers/block/aoe/aoe.h | |||
@@ -0,0 +1,165 @@ | |||
1 | /* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */ | ||
2 | #define VERSION "5" | ||
3 | #define AOE_MAJOR 152 | ||
4 | #define DEVICE_NAME "aoe" | ||
5 | #ifndef AOE_PARTITIONS | ||
6 | #define AOE_PARTITIONS 16 | ||
7 | #endif | ||
8 | #define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * 10 + (aoeminor)) | ||
9 | #define AOEMAJOR(sysminor) ((sysminor) / 10) | ||
10 | #define AOEMINOR(sysminor) ((sysminor) % 10) | ||
11 | #define WHITESPACE " \t\v\f\n" | ||
12 | |||
13 | enum { | ||
14 | AOECMD_ATA, | ||
15 | AOECMD_CFG, | ||
16 | |||
17 | AOEFL_RSP = (1<<3), | ||
18 | AOEFL_ERR = (1<<2), | ||
19 | |||
20 | AOEAFL_EXT = (1<<6), | ||
21 | AOEAFL_DEV = (1<<4), | ||
22 | AOEAFL_ASYNC = (1<<1), | ||
23 | AOEAFL_WRITE = (1<<0), | ||
24 | |||
25 | AOECCMD_READ = 0, | ||
26 | AOECCMD_TEST, | ||
27 | AOECCMD_PTEST, | ||
28 | AOECCMD_SET, | ||
29 | AOECCMD_FSET, | ||
30 | |||
31 | AOE_HVER = 0x10, | ||
32 | }; | ||
33 | |||
34 | struct aoe_hdr { | ||
35 | unsigned char dst[6]; | ||
36 | unsigned char src[6]; | ||
37 | unsigned char type[2]; | ||
38 | unsigned char verfl; | ||
39 | unsigned char err; | ||
40 | unsigned char major[2]; | ||
41 | unsigned char minor; | ||
42 | unsigned char cmd; | ||
43 | unsigned char tag[4]; | ||
44 | }; | ||
45 | |||
46 | struct aoe_atahdr { | ||
47 | unsigned char aflags; | ||
48 | unsigned char errfeat; | ||
49 | unsigned char scnt; | ||
50 | unsigned char cmdstat; | ||
51 | unsigned char lba0; | ||
52 | unsigned char lba1; | ||
53 | unsigned char lba2; | ||
54 | unsigned char lba3; | ||
55 | unsigned char lba4; | ||
56 | unsigned char lba5; | ||
57 | unsigned char res[2]; | ||
58 | }; | ||
59 | |||
60 | struct aoe_cfghdr { | ||
61 | unsigned char bufcnt[2]; | ||
62 | unsigned char fwver[2]; | ||
63 | unsigned char res; | ||
64 | unsigned char aoeccmd; | ||
65 | unsigned char cslen[2]; | ||
66 | }; | ||
67 | |||
68 | enum { | ||
69 | DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */ | ||
70 | DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */ | ||
71 | DEVFL_EXT = (1<<2), /* device accepts lba48 commands */ | ||
72 | DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */ | ||
73 | DEVFL_WC_UPDATE = (1<<4), /* this device needs to update write cache status */ | ||
74 | DEVFL_WORKON = (1<<4), | ||
75 | |||
76 | BUFFL_FAIL = 1, | ||
77 | }; | ||
78 | |||
79 | enum { | ||
80 | MAXATADATA = 1024, | ||
81 | NPERSHELF = 10, | ||
82 | FREETAG = -1, | ||
83 | MIN_BUFS = 8, | ||
84 | }; | ||
85 | |||
86 | struct buf { | ||
87 | struct list_head bufs; | ||
88 | ulong flags; | ||
89 | ulong nframesout; | ||
90 | char *bufaddr; | ||
91 | ulong resid; | ||
92 | ulong bv_resid; | ||
93 | sector_t sector; | ||
94 | struct bio *bio; | ||
95 | struct bio_vec *bv; | ||
96 | }; | ||
97 | |||
98 | struct frame { | ||
99 | int tag; | ||
100 | ulong waited; | ||
101 | struct buf *buf; | ||
102 | char *bufaddr; | ||
103 | int writedatalen; | ||
104 | int ndata; | ||
105 | |||
106 | /* largest possible */ | ||
107 | unsigned char data[sizeof(struct aoe_hdr) + sizeof(struct aoe_atahdr)]; | ||
108 | }; | ||
109 | |||
110 | struct aoedev { | ||
111 | struct aoedev *next; | ||
112 | unsigned char addr[6]; /* remote mac addr */ | ||
113 | ushort flags; | ||
114 | ulong sysminor; | ||
115 | ulong aoemajor; | ||
116 | ulong aoeminor; | ||
117 | ulong nopen; /* (bd_openers isn't available without sleeping) */ | ||
118 | ulong rttavg; /* round trip average of requests/responses */ | ||
119 | u16 fw_ver; /* version of blade's firmware */ | ||
120 | struct work_struct work;/* disk create work struct */ | ||
121 | struct gendisk *gd; | ||
122 | request_queue_t blkq; | ||
123 | struct hd_geometry geo; | ||
124 | sector_t ssize; | ||
125 | struct timer_list timer; | ||
126 | spinlock_t lock; | ||
127 | struct net_device *ifp; /* interface ed is attached to */ | ||
128 | struct sk_buff *skblist;/* packets needing to be sent */ | ||
129 | mempool_t *bufpool; /* for deadlock-free Buf allocation */ | ||
130 | struct list_head bufq; /* queue of bios to work on */ | ||
131 | struct buf *inprocess; /* the one we're currently working on */ | ||
132 | ulong lasttag; /* last tag sent */ | ||
133 | ulong nframes; /* number of frames below */ | ||
134 | struct frame *frames; | ||
135 | }; | ||
136 | |||
137 | |||
138 | int aoeblk_init(void); | ||
139 | void aoeblk_exit(void); | ||
140 | void aoeblk_gdalloc(void *); | ||
141 | void aoedisk_rm_sysfs(struct aoedev *d); | ||
142 | |||
143 | int aoechr_init(void); | ||
144 | void aoechr_exit(void); | ||
145 | void aoechr_error(char *); | ||
146 | |||
147 | void aoecmd_work(struct aoedev *d); | ||
148 | void aoecmd_cfg(ushort, unsigned char); | ||
149 | void aoecmd_ata_rsp(struct sk_buff *); | ||
150 | void aoecmd_cfg_rsp(struct sk_buff *); | ||
151 | |||
152 | int aoedev_init(void); | ||
153 | void aoedev_exit(void); | ||
154 | struct aoedev *aoedev_bymac(unsigned char *); | ||
155 | void aoedev_downdev(struct aoedev *d); | ||
156 | struct aoedev *aoedev_set(ulong, unsigned char *, struct net_device *, ulong); | ||
157 | int aoedev_busy(void); | ||
158 | |||
159 | int aoenet_init(void); | ||
160 | void aoenet_exit(void); | ||
161 | void aoenet_xmit(struct sk_buff *); | ||
162 | int is_aoe_netif(struct net_device *ifp); | ||
163 | int set_aoe_iflist(const char __user *str, size_t size); | ||
164 | |||
165 | u64 mac_addr(char addr[6]); | ||