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c3673464 KX |
1 | /* cxgb3i_init.c: Chelsio S3xx iSCSI driver. |
2 | * | |
3 | * Copyright (c) 2008 Chelsio Communications, Inc. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * Written by: Karen Xie (kxie@chelsio.com) | |
10 | */ | |
11 | ||
12 | #include "cxgb3i.h" | |
13 | ||
14 | #define DRV_MODULE_NAME "cxgb3i" | |
0d0c27f2 KX |
15 | #define DRV_MODULE_VERSION "1.0.2" |
16 | #define DRV_MODULE_RELDATE "Mar. 2009" | |
c3673464 KX |
17 | |
18 | static char version[] = | |
19 | "Chelsio S3xx iSCSI Driver " DRV_MODULE_NAME | |
20 | " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; | |
21 | ||
22 | MODULE_AUTHOR("Karen Xie <kxie@chelsio.com>"); | |
23 | MODULE_DESCRIPTION("Chelsio S3xx iSCSI Driver"); | |
24 | MODULE_LICENSE("GPL"); | |
25 | MODULE_VERSION(DRV_MODULE_VERSION); | |
26 | ||
27 | static void open_s3_dev(struct t3cdev *); | |
28 | static void close_s3_dev(struct t3cdev *); | |
515f1c88 | 29 | static void s3_err_handler(struct t3cdev *tdev, u32 status, u32 error); |
c3673464 KX |
30 | |
31 | static cxgb3_cpl_handler_func cxgb3i_cpl_handlers[NUM_CPL_CMDS]; | |
32 | static struct cxgb3_client t3c_client = { | |
33 | .name = "iscsi_cxgb3", | |
34 | .handlers = cxgb3i_cpl_handlers, | |
35 | .add = open_s3_dev, | |
36 | .remove = close_s3_dev, | |
515f1c88 | 37 | .err_handler = s3_err_handler, |
c3673464 KX |
38 | }; |
39 | ||
40 | /** | |
41 | * open_s3_dev - register with cxgb3 LLD | |
42 | * @t3dev: cxgb3 adapter instance | |
43 | */ | |
44 | static void open_s3_dev(struct t3cdev *t3dev) | |
45 | { | |
46 | static int vers_printed; | |
47 | ||
48 | if (!vers_printed) { | |
49 | printk(KERN_INFO "%s", version); | |
50 | vers_printed = 1; | |
51 | } | |
52 | ||
0d0c27f2 | 53 | cxgb3i_ddp_init(t3dev); |
c3673464 | 54 | cxgb3i_sdev_add(t3dev, &t3c_client); |
515f1c88 | 55 | cxgb3i_adapter_open(t3dev); |
c3673464 KX |
56 | } |
57 | ||
58 | /** | |
59 | * close_s3_dev - de-register with cxgb3 LLD | |
60 | * @t3dev: cxgb3 adapter instance | |
61 | */ | |
62 | static void close_s3_dev(struct t3cdev *t3dev) | |
63 | { | |
515f1c88 | 64 | cxgb3i_adapter_close(t3dev); |
c3673464 | 65 | cxgb3i_sdev_remove(t3dev); |
0d0c27f2 | 66 | cxgb3i_ddp_cleanup(t3dev); |
c3673464 KX |
67 | } |
68 | ||
515f1c88 KX |
69 | static void s3_err_handler(struct t3cdev *tdev, u32 status, u32 error) |
70 | { | |
71 | struct cxgb3i_adapter *snic = cxgb3i_adapter_find_by_tdev(tdev); | |
72 | ||
73 | cxgb3i_log_info("snic 0x%p, tdev 0x%p, status 0x%x, err 0x%x.\n", | |
74 | snic, tdev, status, error); | |
75 | if (!snic) | |
76 | return; | |
77 | ||
78 | switch (status) { | |
79 | case OFFLOAD_STATUS_DOWN: | |
80 | snic->flags |= CXGB3I_ADAPTER_FLAG_RESET; | |
81 | break; | |
82 | case OFFLOAD_STATUS_UP: | |
83 | snic->flags &= ~CXGB3I_ADAPTER_FLAG_RESET; | |
84 | break; | |
85 | } | |
86 | } | |
87 | ||
c3673464 KX |
88 | /** |
89 | * cxgb3i_init_module - module init entry point | |
90 | * | |
91 | * initialize any driver wide global data structures and register itself | |
92 | * with the cxgb3 module | |
93 | */ | |
94 | static int __init cxgb3i_init_module(void) | |
95 | { | |
96 | int err; | |
97 | ||
98 | err = cxgb3i_sdev_init(cxgb3i_cpl_handlers); | |
99 | if (err < 0) | |
100 | return err; | |
101 | ||
102 | err = cxgb3i_iscsi_init(); | |
103 | if (err < 0) | |
104 | return err; | |
105 | ||
106 | err = cxgb3i_pdu_init(); | |
107 | if (err < 0) | |
108 | return err; | |
109 | ||
110 | cxgb3_register_client(&t3c_client); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | /** | |
116 | * cxgb3i_exit_module - module cleanup/exit entry point | |
117 | * | |
118 | * go through the driver hba list and for each hba, release any resource held. | |
119 | * and unregisters iscsi transport and the cxgb3 module | |
120 | */ | |
121 | static void __exit cxgb3i_exit_module(void) | |
122 | { | |
123 | cxgb3_unregister_client(&t3c_client); | |
124 | cxgb3i_pdu_cleanup(); | |
125 | cxgb3i_iscsi_cleanup(); | |
126 | cxgb3i_sdev_cleanup(); | |
127 | } | |
128 | ||
129 | module_init(cxgb3i_init_module); | |
130 | module_exit(cxgb3i_exit_module); |