diff options
| author | Roger Quadros <rogerq@kernel.org> | 2022-12-06 12:44:19 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-12-08 07:17:31 +0300 |
| commit | 020b232f79e97ad06d5edc67a2dc34fe5bc271ef (patch) | |
| tree | 2b89f3c8b3ffc1be4b7efabf061e8ff2f1f11308 | |
| parent | 1581cd8b11748d9ff1d9deedd9dc5c0c1ce9029b (diff) | |
| download | linux-020b232f79e97ad06d5edc67a2dc34fe5bc271ef.tar.xz | |
net: ethernet: ti: am65-cpsw: Fix hardware switch mode on suspend/resume
On low power during system suspend the ALE table context is lost.
Save the ALE context before suspend and restore it after resume.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.c | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.h | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 61a3332f33ad..a8a6f0b48906 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2712,6 +2712,7 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) struct clk *clk; u64 id_temp; int ret, i; + int ale_entries; common = devm_kzalloc(dev, sizeof(struct am65_cpsw_common), GFP_KERNEL); if (!common) @@ -2807,6 +2808,10 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) goto err_of_clear; } + ale_entries = common->ale->params.ale_entries; + common->ale_context = devm_kzalloc(dev, + ale_entries * ALE_ENTRY_WORDS * sizeof(u32), + GFP_KERNEL); ret = am65_cpsw_init_cpts(common); if (ret) goto err_of_clear; @@ -2877,6 +2882,7 @@ static int am65_cpsw_nuss_suspend(struct device *dev) struct net_device *ndev; int i, ret; + cpsw_ale_dump(common->ale, common->ale_context); host_p->vid_context = readl(host_p->port_base + AM65_CPSW_PORT_VLAN_REG_OFFSET); for (i = 0; i < common->port_num; i++) { port = &common->ports[i]; @@ -2949,6 +2955,7 @@ static int am65_cpsw_nuss_resume(struct device *dev) } writel(host_p->vid_context, host_p->port_base + AM65_CPSW_PORT_VLAN_REG_OFFSET); + cpsw_ale_restore(common->ale, common->ale_context); return 0; } diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.h b/drivers/net/ethernet/ti/am65-cpsw-nuss.h index e95cc37a7286..4b75620f8d28 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.h +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.h @@ -149,6 +149,8 @@ struct am65_cpsw_common { struct net_device *hw_bridge_dev; struct notifier_block am65_cpsw_netdevice_nb; unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN]; + /* only for suspend/resume context restore */ + u32 *ale_context; }; struct am65_cpsw_ndev_stats { |