Commit | Line | Data |
---|---|---|
2611464d | 1 | /* Copyright (c) 2006 Coraid, Inc. See COPYING for GPL terms. */ |
086216db | 2 | #define VERSION "32" |
1da177e4 LT |
3 | #define AOE_MAJOR 152 |
4 | #define DEVICE_NAME "aoe" | |
fc458dcd | 5 | |
6 | /* set AOE_PARTITIONS to 1 to use whole-disks only | |
7 | * default is 16, which is 15 partitions plus the whole disk | |
8 | */ | |
1da177e4 | 9 | #ifndef AOE_PARTITIONS |
e39526e6 | 10 | #define AOE_PARTITIONS (16) |
1da177e4 | 11 | #endif |
fc458dcd | 12 | |
e39526e6 EC |
13 | #define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor)) |
14 | #define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF) | |
15 | #define AOEMINOR(sysminor) ((sysminor) % NPERSHELF) | |
1da177e4 LT |
16 | #define WHITESPACE " \t\v\f\n" |
17 | ||
18 | enum { | |
19 | AOECMD_ATA, | |
20 | AOECMD_CFG, | |
21 | ||
22 | AOEFL_RSP = (1<<3), | |
23 | AOEFL_ERR = (1<<2), | |
24 | ||
25 | AOEAFL_EXT = (1<<6), | |
26 | AOEAFL_DEV = (1<<4), | |
27 | AOEAFL_ASYNC = (1<<1), | |
28 | AOEAFL_WRITE = (1<<0), | |
29 | ||
30 | AOECCMD_READ = 0, | |
31 | AOECCMD_TEST, | |
32 | AOECCMD_PTEST, | |
33 | AOECCMD_SET, | |
34 | AOECCMD_FSET, | |
35 | ||
36 | AOE_HVER = 0x10, | |
37 | }; | |
38 | ||
39 | struct aoe_hdr { | |
40 | unsigned char dst[6]; | |
41 | unsigned char src[6]; | |
63e9cc5d | 42 | __be16 type; |
1da177e4 LT |
43 | unsigned char verfl; |
44 | unsigned char err; | |
63e9cc5d | 45 | __be16 major; |
1da177e4 LT |
46 | unsigned char minor; |
47 | unsigned char cmd; | |
63e9cc5d | 48 | __be32 tag; |
1da177e4 LT |
49 | }; |
50 | ||
029720f1 ACM |
51 | #ifdef __KERNEL__ |
52 | #include <linux/skbuff.h> | |
53 | ||
54 | static inline struct aoe_hdr *aoe_hdr(const struct sk_buff *skb) | |
55 | { | |
98e399f8 | 56 | return (struct aoe_hdr *)skb_mac_header(skb); |
029720f1 ACM |
57 | } |
58 | #endif | |
59 | ||
1da177e4 LT |
60 | struct aoe_atahdr { |
61 | unsigned char aflags; | |
62 | unsigned char errfeat; | |
63 | unsigned char scnt; | |
64 | unsigned char cmdstat; | |
65 | unsigned char lba0; | |
66 | unsigned char lba1; | |
67 | unsigned char lba2; | |
68 | unsigned char lba3; | |
69 | unsigned char lba4; | |
70 | unsigned char lba5; | |
71 | unsigned char res[2]; | |
72 | }; | |
73 | ||
74 | struct aoe_cfghdr { | |
63e9cc5d | 75 | __be16 bufcnt; |
76 | __be16 fwver; | |
19bf2635 | 77 | unsigned char scnt; |
1da177e4 LT |
78 | unsigned char aoeccmd; |
79 | unsigned char cslen[2]; | |
80 | }; | |
81 | ||
82 | enum { | |
83 | DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */ | |
84 | DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */ | |
85 | DEVFL_EXT = (1<<2), /* device accepts lba48 commands */ | |
86 | DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */ | |
3ae1c24e EC |
87 | DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */ |
88 | DEVFL_PAUSE = (1<<5), | |
89 | DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */ | |
19bf2635 | 90 | DEVFL_MAXBCNT = (1<<7), /* d->maxbcnt is not changeable */ |
4f51dc5e | 91 | DEVFL_KICKME = (1<<8), |
1da177e4 LT |
92 | |
93 | BUFFL_FAIL = 1, | |
94 | }; | |
95 | ||
96 | enum { | |
19bf2635 | 97 | DEFAULTBCNT = 2 * 512, /* 2 sectors */ |
e39526e6 | 98 | NPERSHELF = 16, /* number of slots per shelf address */ |
1da177e4 LT |
99 | FREETAG = -1, |
100 | MIN_BUFS = 8, | |
101 | }; | |
102 | ||
103 | struct buf { | |
104 | struct list_head bufs; | |
0c6f0e79 | 105 | ulong start_time; /* for disk stats */ |
1da177e4 LT |
106 | ulong flags; |
107 | ulong nframesout; | |
108 | char *bufaddr; | |
109 | ulong resid; | |
110 | ulong bv_resid; | |
111 | sector_t sector; | |
112 | struct bio *bio; | |
113 | struct bio_vec *bv; | |
114 | }; | |
115 | ||
116 | struct frame { | |
117 | int tag; | |
118 | ulong waited; | |
119 | struct buf *buf; | |
120 | char *bufaddr; | |
19bf2635 EC |
121 | ulong bcnt; |
122 | sector_t lba; | |
e407a7f6 | 123 | struct sk_buff *skb; |
1da177e4 LT |
124 | }; |
125 | ||
126 | struct aoedev { | |
127 | struct aoedev *next; | |
128 | unsigned char addr[6]; /* remote mac addr */ | |
129 | ushort flags; | |
130 | ulong sysminor; | |
131 | ulong aoemajor; | |
132 | ulong aoeminor; | |
dced3a05 EC |
133 | u16 nopen; /* (bd_openers isn't available without sleeping) */ |
134 | u16 lasttag; /* last tag sent */ | |
135 | u16 rttavg; /* round trip average of requests/responses */ | |
136 | u16 mintimer; | |
1da177e4 | 137 | u16 fw_ver; /* version of blade's firmware */ |
19bf2635 | 138 | u16 maxbcnt; |
1da177e4 LT |
139 | struct work_struct work;/* disk create work struct */ |
140 | struct gendisk *gd; | |
165125e1 | 141 | struct request_queue blkq; |
1da177e4 LT |
142 | struct hd_geometry geo; |
143 | sector_t ssize; | |
144 | struct timer_list timer; | |
145 | spinlock_t lock; | |
146 | struct net_device *ifp; /* interface ed is attached to */ | |
a4b38364 | 147 | struct sk_buff *sendq_hd; /* packets needing to be sent, list head */ |
148 | struct sk_buff *sendq_tl; | |
1da177e4 LT |
149 | mempool_t *bufpool; /* for deadlock-free Buf allocation */ |
150 | struct list_head bufq; /* queue of bios to work on */ | |
151 | struct buf *inprocess; /* the one we're currently working on */ | |
19bf2635 EC |
152 | ushort lostjumbo; |
153 | ushort nframes; /* number of frames below */ | |
1da177e4 LT |
154 | struct frame *frames; |
155 | }; | |
156 | ||
157 | ||
158 | int aoeblk_init(void); | |
159 | void aoeblk_exit(void); | |
160 | void aoeblk_gdalloc(void *); | |
161 | void aoedisk_rm_sysfs(struct aoedev *d); | |
162 | ||
163 | int aoechr_init(void); | |
164 | void aoechr_exit(void); | |
165 | void aoechr_error(char *); | |
166 | ||
167 | void aoecmd_work(struct aoedev *d); | |
3ae1c24e | 168 | void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor); |
1da177e4 LT |
169 | void aoecmd_ata_rsp(struct sk_buff *); |
170 | void aoecmd_cfg_rsp(struct sk_buff *); | |
c4028958 | 171 | void aoecmd_sleepwork(struct work_struct *); |
e407a7f6 | 172 | struct sk_buff *new_skb(ulong); |
1da177e4 LT |
173 | |
174 | int aoedev_init(void); | |
175 | void aoedev_exit(void); | |
32465c65 | 176 | struct aoedev *aoedev_by_aoeaddr(int maj, int min); |
3ae1c24e | 177 | struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt); |
1da177e4 | 178 | void aoedev_downdev(struct aoedev *d); |
3ae1c24e | 179 | int aoedev_isbusy(struct aoedev *d); |
1da177e4 LT |
180 | |
181 | int aoenet_init(void); | |
182 | void aoenet_exit(void); | |
183 | void aoenet_xmit(struct sk_buff *); | |
184 | int is_aoe_netif(struct net_device *ifp); | |
185 | int set_aoe_iflist(const char __user *str, size_t size); | |
186 | ||
187 | u64 mac_addr(char addr[6]); |