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net: mvpp2: Add remove function that is called before the OS is started

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This patch adds a remove function to the mvpp2 ethernet driver which is
called before the OS is started, doing:

- Allocate the used buffers back from the buffer manager
- Stop the BM activity

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Stefan Chulski <stefanc@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Stefan Roese 2017-03-23 17:01:59 +01:00
parent 2f92629112
commit 2f720f1957
1 changed files with 24 additions and 0 deletions
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24
drivers/net/mvpp2.c
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@ -2618,6 +2618,13 @@ static void mvpp2_bm_pool_bufsize_set(struct mvpp2 *priv,
static void mvpp2_bm_bufs_free(struct udevice *dev, struct mvpp2 *priv,
struct mvpp2_bm_pool *bm_pool)
{
int i;
for (i = 0; i < bm_pool->buf_num; i++) {
/* Allocate buffer back from the buffer manager */
mvpp2_read(priv, MVPP2_BM_PHY_ALLOC_REG(bm_pool->id));
}
bm_pool->buf_num = 0;
}
@ -5501,6 +5508,21 @@ static int mvpp2_probe(struct udevice *dev)
return 0;
}
/*
* Empty BM pool and stop its activity before the OS is started
*/
static int mvpp2_remove(struct udevice *dev)
{
struct mvpp2_port *port = dev_get_priv(dev);
struct mvpp2 *priv = port->priv;
int i;
for (i = 0; i < MVPP2_BM_POOLS_NUM; i++)
mvpp2_bm_pool_destroy(dev, priv, &priv->bm_pools[i]);
return 0;
}
static const struct eth_ops mvpp2_ops = {
.start = mvpp2_start,
.send = mvpp2_send,
@ -5512,9 +5534,11 @@ static struct driver mvpp2_driver = {
.name = "mvpp2",
.id = UCLASS_ETH,
.probe = mvpp2_probe,
.remove = mvpp2_remove,
.ops = &mvpp2_ops,
.priv_auto_alloc_size = sizeof(struct mvpp2_port),
.platdata_auto_alloc_size = sizeof(struct eth_pdata),
.flags = DM_FLAG_ACTIVE_DMA,
};
/*