diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0178-staging-dpaa2-mac-add-link-up-down-events-for-dpmac.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0178-staging-dpaa2-mac-add-link-up-down-events-for-dpmac.patch | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0178-staging-dpaa2-mac-add-link-up-down-events-for-dpmac.patch b/target/linux/layerscape/patches-5.4/701-net-0178-staging-dpaa2-mac-add-link-up-down-events-for-dpmac.patch new file mode 100644 index 0000000000..9fbd8c79ab --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0178-staging-dpaa2-mac-add-link-up-down-events-for-dpmac.patch @@ -0,0 +1,91 @@ +From 3b07b109823a593f43e794cbf44ba3a84ceefbdb Mon Sep 17 00:00:00 2001 +From: Florin Chiculita <florinlaurentiu.chiculita@nxp.com> +Date: Fri, 23 Aug 2019 18:02:27 +0300 +Subject: [PATCH] staging: dpaa2-mac: add link up/down events for dpmac + +Fix a limitation that affects the networking behavior when the user +issues ifconfig down/up on a DPNI and the link remains down. +The actual problem was that the mac driver was not aware of the +dpni link change event. Now, the event is sent by firmware and +phylib state machine is manipulated conveniently. + +Signed-off-by: Florin Chiculita <florinlaurentiu.chiculita@nxp.com> +Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> +--- + drivers/staging/fsl-dpaa2/mac/dpmac.h | 5 +++++ + drivers/staging/fsl-dpaa2/mac/mac.c | 15 ++++++++++++--- + 2 files changed, 17 insertions(+), 3 deletions(-) + +--- a/drivers/staging/fsl-dpaa2/mac/dpmac.h ++++ b/drivers/staging/fsl-dpaa2/mac/dpmac.h +@@ -124,6 +124,11 @@ int dpmac_destroy(struct fsl_mc_io *mc_i + * IRQ event - Indicates that the link state changed + */ + #define DPMAC_IRQ_EVENT_LINK_CHANGED 0x00000002 ++/** ++ * IRQ event - Indicate if the phy needs to suspend or resume ++ */ ++#define DPMAC_IRQ_EVENT_LINK_UP_REQ 0x00000004 ++#define DPMAC_IRQ_EVENT_LINK_DOWN_REQ 0x00000008 + + int dpmac_set_irq_enable(struct fsl_mc_io *mc_io, + u32 cmd_flags, +--- a/drivers/staging/fsl-dpaa2/mac/mac.c ++++ b/drivers/staging/fsl-dpaa2/mac/mac.c +@@ -181,6 +181,7 @@ static void dpaa2_mac_link_changed(struc + dev_err(&priv->mc_dev->dev, "dpmac_set_link_state: %d\n", err); + } + ++#ifdef CONFIG_FSL_DPAA2_MAC_NETDEVS + static int dpaa2_mac_open(struct net_device *netdev) + { + /* start PHY state machine */ +@@ -188,6 +189,7 @@ static int dpaa2_mac_open(struct net_dev + + return 0; + } ++#endif + + static int dpaa2_mac_stop(struct net_device *netdev) + { +@@ -450,6 +452,7 @@ static irqreturn_t dpaa2_mac_irq_handler + struct device *dev = (struct device *)arg; + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); + struct dpaa2_mac_priv *priv = dev_get_drvdata(dev); ++ struct net_device *ndev = priv->netdev; + struct dpmac_link_cfg link_cfg = { 0 }; + u32 status; + int err; +@@ -475,6 +478,12 @@ static irqreturn_t dpaa2_mac_irq_handler + configure_link(priv, &link_cfg); + } + ++ if (status & DPMAC_IRQ_EVENT_LINK_UP_REQ) ++ phy_start(ndev->phydev); ++ ++ if (status & DPMAC_IRQ_EVENT_LINK_DOWN_REQ) ++ phy_stop(ndev->phydev); ++ + out: + dpmac_clear_irq_status(mc_dev->mc_io, 0, mc_dev->mc_handle, + DPMAC_IRQ_INDEX, status); +@@ -505,7 +514,9 @@ static int setup_irqs(struct fsl_mc_devi + } + + err = dpmac_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, +- DPMAC_IRQ_INDEX, DPMAC_IRQ_EVENT_LINK_CFG_REQ); ++ DPMAC_IRQ_INDEX, DPMAC_IRQ_EVENT_LINK_CFG_REQ | ++ DPMAC_IRQ_EVENT_LINK_UP_REQ | ++ DPMAC_IRQ_EVENT_LINK_DOWN_REQ); + if (err) { + dev_err(&mc_dev->dev, "dpmac_set_irq_mask err %d\n", err); + goto free_irq; +@@ -734,8 +745,6 @@ probe_fixed_link: + dev_info(dev, "Registered fixed PHY.\n"); + } + +- dpaa2_mac_open(netdev); +- + return 0; + + err_no_if_mode: |