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git.ipfire.org Git - thirdparty/kernel/stable.git/blob - drivers/net/ethernet/sfc/mtd.c
1 /****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2013 Solarflare Communications Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
11 #include <linux/module.h>
12 #include <linux/mtd/mtd.h>
13 #include <linux/slab.h>
14 #include <linux/rtnetlink.h>
16 #include "net_driver.h"
19 #define to_efx_mtd_partition(mtd) \
20 container_of(mtd, struct efx_mtd_partition, mtd)
24 static int efx_mtd_erase(struct mtd_info
*mtd
, struct erase_info
*erase
)
26 struct efx_nic
*efx
= mtd
->priv
;
28 return efx
->type
->mtd_erase(mtd
, erase
->addr
, erase
->len
);
31 static void efx_mtd_sync(struct mtd_info
*mtd
)
33 struct efx_mtd_partition
*part
= to_efx_mtd_partition(mtd
);
34 struct efx_nic
*efx
= mtd
->priv
;
37 rc
= efx
->type
->mtd_sync(mtd
);
39 pr_err("%s: %s sync failed (%d)\n",
40 part
->name
, part
->dev_type_name
, rc
);
43 static void efx_mtd_remove_partition(struct efx_mtd_partition
*part
)
48 rc
= mtd_device_unregister(&part
->mtd
);
54 list_del(&part
->node
);
57 int efx_mtd_add(struct efx_nic
*efx
, struct efx_mtd_partition
*parts
,
58 size_t n_parts
, size_t sizeof_part
)
60 struct efx_mtd_partition
*part
;
63 for (i
= 0; i
< n_parts
; i
++) {
64 part
= (struct efx_mtd_partition
*)((char *)parts
+
67 part
->mtd
.writesize
= 1;
69 if (!(part
->mtd
.flags
& MTD_NO_ERASE
))
70 part
->mtd
.flags
|= MTD_WRITEABLE
;
72 part
->mtd
.owner
= THIS_MODULE
;
74 part
->mtd
.name
= part
->name
;
75 part
->mtd
._erase
= efx_mtd_erase
;
76 part
->mtd
._read
= efx
->type
->mtd_read
;
77 part
->mtd
._write
= efx
->type
->mtd_write
;
78 part
->mtd
._sync
= efx_mtd_sync
;
80 efx
->type
->mtd_rename(part
);
82 if (mtd_device_register(&part
->mtd
, NULL
, 0))
85 /* Add to list in order - efx_mtd_remove() depends on this */
86 list_add_tail(&part
->node
, &efx
->mtd_list
);
93 part
= (struct efx_mtd_partition
*)((char *)parts
+
95 efx_mtd_remove_partition(part
);
97 /* Failure is unlikely here, but probably means we're out of memory */
101 void efx_mtd_remove(struct efx_nic
*efx
)
103 struct efx_mtd_partition
*parts
, *part
, *next
;
105 WARN_ON(efx_dev_registered(efx
));
107 if (list_empty(&efx
->mtd_list
))
110 parts
= list_first_entry(&efx
->mtd_list
, struct efx_mtd_partition
,
113 list_for_each_entry_safe(part
, next
, &efx
->mtd_list
, node
)
114 efx_mtd_remove_partition(part
);
119 void efx_mtd_rename(struct efx_nic
*efx
)
121 struct efx_mtd_partition
*part
;
125 list_for_each_entry(part
, &efx
->mtd_list
, node
)
126 efx
->type
->mtd_rename(part
);