forked from mirrors/linux
5fb1beecea
The X2 family of NICs (based on the SFC9250) have additional MTD partitions for firmware and configuration. This includes partitions that are read-only. The NICs also have extended versions of the NVRAM interface, allowing more detailed status information to be returned. Signed-off-by: Bert Kenward <bkenward@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/****************************************************************************
|
|
* Driver for Solarflare network controllers and boards
|
|
* Copyright 2005-2006 Fen Systems Ltd.
|
|
* Copyright 2006-2013 Solarflare Communications Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation, incorporated herein by reference.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/rtnetlink.h>
|
|
|
|
#include "net_driver.h"
|
|
#include "efx.h"
|
|
|
|
#define to_efx_mtd_partition(mtd) \
|
|
container_of(mtd, struct efx_mtd_partition, mtd)
|
|
|
|
/* MTD interface */
|
|
|
|
static int efx_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
|
|
{
|
|
struct efx_nic *efx = mtd->priv;
|
|
|
|
return efx->type->mtd_erase(mtd, erase->addr, erase->len);
|
|
}
|
|
|
|
static void efx_mtd_sync(struct mtd_info *mtd)
|
|
{
|
|
struct efx_mtd_partition *part = to_efx_mtd_partition(mtd);
|
|
struct efx_nic *efx = mtd->priv;
|
|
int rc;
|
|
|
|
rc = efx->type->mtd_sync(mtd);
|
|
if (rc)
|
|
pr_err("%s: %s sync failed (%d)\n",
|
|
part->name, part->dev_type_name, rc);
|
|
}
|
|
|
|
static void efx_mtd_remove_partition(struct efx_mtd_partition *part)
|
|
{
|
|
int rc;
|
|
|
|
for (;;) {
|
|
rc = mtd_device_unregister(&part->mtd);
|
|
if (rc != -EBUSY)
|
|
break;
|
|
ssleep(1);
|
|
}
|
|
WARN_ON(rc);
|
|
list_del(&part->node);
|
|
}
|
|
|
|
int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
|
|
size_t n_parts, size_t sizeof_part)
|
|
{
|
|
struct efx_mtd_partition *part;
|
|
size_t i;
|
|
|
|
for (i = 0; i < n_parts; i++) {
|
|
part = (struct efx_mtd_partition *)((char *)parts +
|
|
i * sizeof_part);
|
|
|
|
part->mtd.writesize = 1;
|
|
|
|
if (!(part->mtd.flags & MTD_NO_ERASE))
|
|
part->mtd.flags |= MTD_WRITEABLE;
|
|
|
|
part->mtd.owner = THIS_MODULE;
|
|
part->mtd.priv = efx;
|
|
part->mtd.name = part->name;
|
|
part->mtd._erase = efx_mtd_erase;
|
|
part->mtd._read = efx->type->mtd_read;
|
|
part->mtd._write = efx->type->mtd_write;
|
|
part->mtd._sync = efx_mtd_sync;
|
|
|
|
efx->type->mtd_rename(part);
|
|
|
|
if (mtd_device_register(&part->mtd, NULL, 0))
|
|
goto fail;
|
|
|
|
/* Add to list in order - efx_mtd_remove() depends on this */
|
|
list_add_tail(&part->node, &efx->mtd_list);
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
while (i--) {
|
|
part = (struct efx_mtd_partition *)((char *)parts +
|
|
i * sizeof_part);
|
|
efx_mtd_remove_partition(part);
|
|
}
|
|
/* Failure is unlikely here, but probably means we're out of memory */
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void efx_mtd_remove(struct efx_nic *efx)
|
|
{
|
|
struct efx_mtd_partition *parts, *part, *next;
|
|
|
|
WARN_ON(efx_dev_registered(efx));
|
|
|
|
if (list_empty(&efx->mtd_list))
|
|
return;
|
|
|
|
parts = list_first_entry(&efx->mtd_list, struct efx_mtd_partition,
|
|
node);
|
|
|
|
list_for_each_entry_safe(part, next, &efx->mtd_list, node)
|
|
efx_mtd_remove_partition(part);
|
|
|
|
kfree(parts);
|
|
}
|
|
|
|
void efx_mtd_rename(struct efx_nic *efx)
|
|
{
|
|
struct efx_mtd_partition *part;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
list_for_each_entry(part, &efx->mtd_list, node)
|
|
efx->type->mtd_rename(part);
|
|
}
|