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 ---
drivers/net/mvpp2.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c index 0283ee2397..555cd31b19 100644 --- a/drivers/net/mvpp2.c +++ b/drivers/net/mvpp2.c @@ -2450,6 +2450,13 @@ 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; }
@@ -4492,6 +4499,21 @@ static int mvpp2_probe(struct udevice *dev) return mvpp2_port_probe(dev, port, dev_of_offset(dev), priv); }
+/* + * 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, @@ -4503,9 +4525,11 @@ 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, };
/*