diff options
Diffstat (limited to 'target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch')
| -rw-r--r-- | target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch b/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch new file mode 100644 index 0000000..362f4bc --- /dev/null +++ b/target/linux/octeontx/patches-4.14/0001-net-thunderx-add-support-for-rgmii-internal-delay-mo.patch @@ -0,0 +1,148 @@ +From 69a99101748bb1bdb2730393ef48bc152c4d244a Mon Sep 17 00:00:00 2001 +From: Tim Harvey <tharvey@gateworks.com> +Date: Tue, 12 Dec 2017 12:49:55 -0800 +Subject: [PATCH] net: thunderx: add support for rgmii internal delay modes + +The XCV_DLL_CTL is being configured with the assumption that +phy-mode is rgmii-txid (PHY_INTERFACE_MODE_RGMII_TXID) which is not always +the case. + +This patch parses the phy-mode property and uses it to configure CXV_DLL_CTL +properly. + +Signed-off-by: Tim Harvey <tharvey@gateworks.com> +--- + drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 13 +++++++--- + drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 2 +- + drivers/net/ethernet/cavium/thunder/thunder_xcv.c | 31 ++++++++++++++++++----- + 3 files changed, 35 insertions(+), 11 deletions(-) + +diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +index 5e5c4d7..805c02a 100644 +--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c ++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +@@ -55,6 +55,7 @@ struct bgx { + struct pci_dev *pdev; + bool is_dlm; + bool is_rgx; ++ int phy_mode; + }; + + static struct bgx *bgx_vnic[MAX_BGX_THUNDER]; +@@ -841,12 +842,12 @@ static void bgx_poll_for_link(struct work_struct *work) + queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 2); + } + +-static int phy_interface_mode(u8 lmac_type) ++static int phy_interface_mode(struct bgx *bgx, u8 lmac_type) + { + if (lmac_type == BGX_MODE_QSGMII) + return PHY_INTERFACE_MODE_QSGMII; + if (lmac_type == BGX_MODE_RGMII) +- return PHY_INTERFACE_MODE_RGMII; ++ return bgx->phy_mode; + + return PHY_INTERFACE_MODE_SGMII; + } +@@ -912,7 +913,8 @@ static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid) + + if (phy_connect_direct(&lmac->netdev, lmac->phydev, + bgx_lmac_handler, +- phy_interface_mode(lmac->lmac_type))) ++ phy_interface_mode(bgx, ++ lmac->lmac_type))) + return -ENODEV; + + phy_start_aneg(lmac->phydev); +@@ -1287,6 +1289,8 @@ static int bgx_init_of_phy(struct bgx *bgx) + bgx->lmac[lmac].lmacid = lmac; + + phy_np = of_parse_phandle(node, "phy-handle", 0); ++ if (phy_np) ++ bgx->phy_mode = of_get_phy_mode(phy_np); + /* If there is no phy or defective firmware presents + * this cortina phy, for which there is no driver + * support, ignore it. +@@ -1390,7 +1394,6 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) + bgx->max_lmac = 1; + bgx->bgx_id = MAX_BGX_PER_CN81XX - 1; + bgx_vnic[bgx->bgx_id] = bgx; +- xcv_init_hw(); + } + + /* On 81xx all are DLMs and on 83xx there are 3 BGX QLMs and one +@@ -1407,6 +1410,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) + if (err) + goto err_enable; + ++ if (bgx->is_rgx) ++ xcv_init_hw(bgx->phy_mode); + bgx_init_hw(bgx); + + /* Enable all LMACs */ +diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +index 23acdc5..2bba9d1 100644 +--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h ++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +@@ -226,7 +226,7 @@ void bgx_lmac_internal_loopback(int node, int bgx_idx, + void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause); + void bgx_lmac_set_pfc(int node, int bgx_idx, int lmacid, void *pause); + +-void xcv_init_hw(void); ++void xcv_init_hw(int phy_mode); + void xcv_setup_link(bool link_up, int link_speed); + + u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx); +diff --git a/drivers/net/ethernet/cavium/thunder/thunder_xcv.c b/drivers/net/ethernet/cavium/thunder/thunder_xcv.c +index 578c7f8..7e0c4cb 100644 +--- a/drivers/net/ethernet/cavium/thunder/thunder_xcv.c ++++ b/drivers/net/ethernet/cavium/thunder/thunder_xcv.c +@@ -65,7 +65,7 @@ MODULE_LICENSE("GPL v2"); + MODULE_VERSION(DRV_VERSION); + MODULE_DEVICE_TABLE(pci, xcv_id_table); + +-void xcv_init_hw(void) ++void xcv_init_hw(int phy_mode) + { + u64 cfg; + +@@ -81,12 +81,31 @@ void xcv_init_hw(void) + /* Wait for DLL to lock */ + msleep(1); + +- /* Configure DLL - enable or bypass +- * TX no bypass, RX bypass +- */ ++ /* enable/bypass DLL providing MAC based internal TX/RX delays */ + cfg = readq_relaxed(xcv->reg_base + XCV_DLL_CTL); +- cfg &= ~0xFF03; +- cfg |= CLKRX_BYP; ++ cfg &= ~0xffff00; ++ switch (phy_mode) { ++ /* RX and TX delays are added by the MAC */ ++ case PHY_INTERFACE_MODE_RGMII: ++ break; ++ /* internal RX and TX delays provided by the PHY */ ++ case PHY_INTERFACE_MODE_RGMII_ID: ++ cfg |= CLKRX_BYP; ++ cfg |= CLKTX_BYP; ++ break; ++ /* internal RX delay provided by the PHY, the MAC ++ * should not add an RX delay in this case ++ */ ++ case PHY_INTERFACE_MODE_RGMII_RXID: ++ cfg |= CLKRX_BYP; ++ break; ++ /* internal TX delay provided by the PHY, the MAC ++ * should not add an TX delay in this case ++ */ ++ case PHY_INTERFACE_MODE_RGMII_TXID: ++ cfg |= CLKRX_BYP; ++ break; ++ } + writeq_relaxed(cfg, xcv->reg_base + XCV_DLL_CTL); + + /* Enable compensation controller and force the +-- +2.7.4 + |