diff options
| -rw-r--r-- | Documentation/networking/stmmac.txt | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/common.h | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 56 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 110 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 34 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 73 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 54 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h | 159 |
9 files changed, 350 insertions, 165 deletions
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt index 671fe3dd56d3..e226f8925c9e 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -285,6 +285,7 @@ Please see the following document: o mmc_core.c/mmc.h: Management MAC Counters; o stmmac_hwtstamp.c: HW timestamp support for PTP; o stmmac_ptp.c: PTP 1588 clock; + o stmmac_pcs.h: Physical Coding Sublayer common implementation; o dwmac-<XXX>.c: these are for the platform glue-logic file; e.g. dwmac-sti.c for STMicroelectronics SoCs. diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index fc60368df2e7..86eba2a7bbea 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -232,6 +232,11 @@ struct stmmac_extra_stats { #define DMA_HW_FEAT_ACTPHYIF 0x70000000 /* Active/selected PHY iface */ #define DEFAULT_DMA_PBL 8 +/* PCS status and mask defines */ +#define PCS_ANE_IRQ BIT(2) /* PCS Auto-Negotiation */ +#define PCS_LINK_IRQ BIT(1) /* PCS Link */ +#define PCS_RGSMIIIS_IRQ BIT(0) /* RGMII or SMII Interrupt */ + /* Max/Min RI Watchdog Timer count value */ #define MAX_DMA_RIWT 0xff #define MIN_DMA_RIWT 0x20 @@ -272,9 +277,6 @@ enum dma_irq_status { #define CORE_IRQ_RX_PATH_IN_LPI_MODE (1 << 2) #define CORE_IRQ_RX_PATH_EXIT_LPI_MODE (1 << 3) -#define CORE_PCS_ANE_COMPLETE (1 << 5) -#define CORE_PCS_LINK_STATUS (1 << 6) -#define CORE_RGMII_IRQ (1 << 7) #define CORE_IRQ_MTL_RX_OVERFLOW BIT(8) /* Physical Coding Sublayer */ @@ -469,9 +471,12 @@ struct stmmac_ops { void (*reset_eee_mode)(struct mac_device_info *hw); void (*set_eee_timer)(struct mac_device_info *hw, int ls, int tw); void (*set_eee_pls)(struct mac_device_info *hw, int link); - void (*ctrl_ane)(struct mac_device_info *hw, bool restart); - void (*get_adv)(struct mac_device_info *hw, struct rgmii_adv *adv); void (*debug)(void __iomem *ioaddr, struct stmmac_extra_stats *x); + /* PCS calls */ + void (*pcs_ctrl_ane)(void __iomem *ioaddr, bool ane, bool srgmi_ral, + bool loopback); + void (*pcs_rane)(void __iomem *ioaddr, bool restart); + void (*pcs_get_adv_lp)(void __iomem *ioaddr, struct rgmii_adv *adv); }; /* PTP and HW Timer helpers */ @@ -546,6 +551,7 @@ void stmmac_dwmac4_get_mac_addr(void __iomem *ioaddr, unsigned char *addr, void stmmac_dwmac4_set_mac(void __iomem *ioaddr, bool enable); void dwmac_dma_flush_tx_fifo(void __iomem *ioaddr); + extern const struct stmmac_mode_ops ring_mode_ops; extern const struct stmmac_mode_ops chain_mode_ops; extern const struct stmmac_desc_ops dwmac4_desc_ops; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h index b0593a4268ee..e67136038e55 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h @@ -46,9 +46,6 @@ enum dwmac1000_irq_status { mmc_rx_irq = 0x0020, mmc_irq = 0x0010, pmt_irq = 0x0008, - pcs_ane_irq = 0x0004, - pcs_link_irq = 0x0002, - rgmii_irq = 0x0001, }; #define GMAC_INT_MASK 0x0000003c /* interrupt mask register */ @@ -90,42 +87,23 @@ enum power_event { (reg * 8)) #define GMAC_MAX_PERFECT_ADDRESSES 1 -/* PCS registers (AN/TBI/SGMII/RGMII) offset */ -#define GMAC_AN_CTRL 0x000000c0 /* AN control */ -#define GMAC_AN_STATUS 0x000000c4 /* AN status */ -#define GMAC_ANE_ADV 0x000000c8 /* Auto-Neg. Advertisement */ -#define GMAC_ANE_LPA 0x000000cc /* Auto-Neg. link partener ability */ -#define GMAC_ANE_EXP 0x000000d0 /* ANE expansion */ -#define GMAC_TBI 0x000000d4 /* TBI extend status */ -#define GMAC_S_R_GMII 0x000000d8 /* SGMII RGMII status */ - -/* AN Configuration defines */ -#define GMAC_AN_CTRL_RAN 0x00000200 /* Restart Auto-Negotiation */ -#define GMAC_AN_CTRL_ANE 0x00001000 /* Auto-Negotiation Enable */ -#define GMAC_AN_CTRL_ELE 0x00004000 /* External Loopback Enable */ -#define GMAC_AN_CTRL_ECD 0x00010000 /* Enable Comma Detect */ -#define GMAC_AN_CTRL_LR 0x00020000 /* Lock to Reference */ -#define GMAC_AN_CTRL_SGMRAL 0x00040000 /* SGMII RAL Control */ - -/* AN Status defines */ -#define GMAC_AN_STATUS_LS 0x00000004 /* Link Status 0:down 1:up */ -#define GMAC_AN_STATUS_ANA 0x00000008 /* Auto-Negotiation Ability */ -#define GMAC_AN_STATUS_ANC 0x00000020 /* Auto-Negotiation Complete */ -#define GMAC_AN_STATUS_ES 0x00000100 /* Extended Status */ - -/* Register 54 (SGMII/RGMII status register) */ -#define GMAC_S_R_GMII_LINK 0x8 -#define GMAC_S_R_GMII_SPEED 0x5 -#define GMAC_S_R_GMII_SPEED_SHIFT 0x1 -#define GMAC_S_R_GMII_MODE 0x1 -#define GMAC_S_R_GMII_SPEED_125 2 -#define GMAC_S_R_GMII_SPEED_25 1 - -/* Common ADV and LPA defines */ -#define GMAC_ANE_FD (1 << 5) -#define GMAC_ANE_HD (1 << 6) -#define GMAC_ANE_PSE (3 << 7) -#define GMAC_ANE_PSE_SHIFT 7 +#define GMAC_PCS_BASE 0x000000c0 /* PCS register base */ +#define GMAC_RGSMIIIS 0x000000d8 /* RGMII/SMII status */ + +/* SGMII/RGMII status register */ +#define GMAC_RGSMIIIS_LNKMODE BIT(0) +#define GMAC_RGSMIIIS_SPEED GENMASK(2, 1) +#define GMAC_RGSMIIIS_SPEED_SHIFT 1 +#define GMAC_RGSMIIIS_LNKSTS BIT(3) +#define GMAC_RGSMIIIS_JABTO BIT(4) +#define GMAC_RGSMIIIS_FALSECARDET BIT(5) +#define GMAC_RGSMIIIS_SMIDRXS BIT(16) +/* LNKMOD */ +#define GMAC_RGSMIIIS_LNKMOD_MASK 0x1 +/* LNKSPEED */ +#define GMAC_RGSMIIIS_SPEED_125 0x2 +#define GMAC_RGSMIIIS_SPEED_25 0x1 +#define GMAC_RGSMIIIS_SPEED_2_5 0x0 /* GMAC Configuration defines */ #define GMAC_CONTROL_2K 0x08000000 /* IEEE 802.3as 2K packets */ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c index fb1eb578e34e..9772a43c27ef 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -30,6 +30,7 @@ #include <linux/slab.h> #include <linux/ethtool.h> #include <asm/io.h> +#include "stmmac_pcs.h" #include "dwmac1000.h" static void dwmac1000_core_init(struct mac_device_info *hw, int mtu) @@ -241,6 +242,39 @@ static void dwmac1000_pmt(struct mac_device_info *hw, unsigned long mode) writel(pmt, ioaddr + GMAC_PMT); } +/* RGMII or SMII interface */ +static void dwmac1000_rgsmii(void __iomem *ioaddr, struct stmmac_extra_stats *x) +{ + u32 status; + + status = readl(ioaddr + GMAC_RGSMIIIS); + x->irq_rgmii_n++; + + /* Check the link status */ + if (status & GMAC_RGSMIIIS_LNKSTS) { + int speed_value; + + x->pcs_link = 1; + + speed_value = ((status & GMAC_RGSMIIIS_SPEED) >> + GMAC_RGSMIIIS_SPEED_SHIFT); + if (speed_value == GMAC_RGSMIIIS_SPEED_125) + x->pcs_speed = SPEED_1000; + else if (speed_value == GMAC_RGSMIIIS_SPEED_25) + x->pcs_speed = SPEED_100; + else + x->pcs_speed = SPEED_10; + + x->pcs_duplex = (status & GMAC_RGSMIIIS_LNKMOD_MASK); + + pr_info("Link is Up - %d/%s\n", (int)x->pcs_speed, + x->pcs_duplex ? "Full" : "Half"); + } else { + x->pcs_link = 0; + pr_info("Link is Down\n"); + } +} + static int dwmac1000_irq_status(struct mac_device_info *hw, struct stmmac_extra_stats *x) { @@ -260,6 +294,7 @@ static int dwmac1000_irq_status(struct mac_device_info *hw, readl(ioaddr + GMAC_PMT); x->irq_receive_pmt_irq_n++; } + /* MAC trx/rx EEE LPI entry/exit interrupts */ if (intr_status & lpiis_irq) { /* Clean LPI interrupt by reading the Reg 12 */ @@ -275,36 +310,10 @@ static int dwmac1000_irq_status(struct mac_device_info *hw, x->irq_rx_path_exit_lpi_mode_n++; } - if ((intr_status & pcs_ane_irq) || (intr_status & pcs_link_irq)) { - readl(ioaddr + GMAC_AN_STATUS); - x->irq_pcs_ane_n++; - } - if (intr_status & rgmii_irq) { - u32 status = readl(ioaddr + GMAC_S_R_GMII); - x->irq_rgmii_n++; - - /* Save and dump the link status. */ - if (status & GMAC_S_R_GMII_LINK) { - int speed_value = (status & GMAC_S_R_GMII_SPEED) >> - GMAC_S_R_GMII_SPEED_SHIFT; - x->pcs_duplex = (status & GMAC_S_R_GMII_MODE); - - if (speed_value == GMAC_S_R_GMII_SPEED_125) - x->pcs_speed = SPEED_1000; - else if (speed_value == GMAC_S_R_GMII_SPEED_25) - x->pcs_speed = SPEED_100; - else - x->pcs_speed = SPEED_10; - - x->pcs_link = 1; - pr_debug("%s: Link is Up - %d/%s\n", __func__, - (int)x->pcs_speed, - x->pcs_duplex ? "Full" : "Half"); - } else { - x->pcs_link = 0; - pr_debug("%s: Link is Down\n", __func__); - } - } + dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x); + + if (intr_status & PCS_RGSMIIIS_IRQ) + dwmac1000_rgsmii(ioaddr, x); return ret; } @@ -363,38 +372,20 @@ static void dwmac1000_set_eee_timer(struct mac_device_info *hw, int ls, int tw) writel(value, ioaddr + LPI_TIMER_CTRL); } -static void dwmac1000_ctrl_ane(struct mac_device_info *hw, bool restart) +static void dwmac1000_ctrl_ane(void __iomem *ioaddr, bool ane, bool srgmi_ral, + bool loopback) { - void __iomem *ioaddr = hw->pcsr; - /* auto negotiation enable and External Loopback enable */ - u32 value = GMAC_AN_CTRL_ANE | GMAC_AN_CTRL_ELE; - - if (restart) - value |= GMAC_AN_CTRL_RAN; - - writel(value, ioaddr + GMAC_AN_CTRL); + dwmac_ctrl_ane(ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback); } -static void dwmac1000_get_adv(struct mac_device_info *hw, struct rgmii_adv *adv) +static void dwmac1000_rane(void __iomem *ioaddr, bool restart) { - void __iomem *ioaddr = hw->pcsr; - u32 value = readl(ioaddr + GMAC_ANE_ADV); - - if (value & GMAC_ANE_FD) - adv->duplex = DUPLEX_FULL; - if (value & GMAC_ANE_HD) - adv->duplex |= DUPLEX_HALF; - - adv->pause = (value & GMAC_ANE_PSE) >> GMAC_ANE_PSE_SHIFT; - - value = readl(ioaddr + GMAC_ANE_LPA); - - if (value & GMAC_ANE_FD) - adv->lp_duplex = DUPLEX_FULL; - if (value & GMAC_ANE_HD) - adv->lp_duplex = DUPLEX_HALF; + dwmac_rane(ioaddr, GMAC_PCS_BASE, restart); +} - adv->lp_pause = (value & GMAC_ANE_PSE) >> GMAC_ANE_PSE_SHIFT; +static void dwmac1000_get_adv_lp(void __iomem *ioaddr, struct rgmii_adv *adv) +{ + dwmac_get_adv_lp(ioaddr, GMAC_PCS_BASE, adv); } static void dwmac1000_debug(void __iomem *ioaddr, struct stmmac_extra_stats *x) @@ -485,9 +476,10 @@ static const struct stmmac_ops dwmac1000_ops = { .reset_eee_mode = dwmac1000_reset_eee_mode, .set_eee_timer = dwmac1000_set_eee_timer, .set_eee_pls = dwmac1000_set_eee_pls, - .ctrl_ane = dwmac1000_ctrl_ane, - .get_adv = dwmac1000_get_adv, .debug = dwmac1000_debug, + .pcs_ctrl_ane = dwmac1000_ctrl_ane, + .pcs_rane = dwmac1000_rane, + .pcs_get_adv_lp = dwmac1000_get_adv_lp, }; struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr, int mcbins, diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h index bc50952a18e7..227fa20d10c1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h @@ -24,10 +24,8 @@ #define GMAC_QX_TX_FLOW_CTRL(x) (0x70 + x * 4) #define GMAC_INT_STATUS 0x000000b0 #define GMAC_INT_EN 0x000000b4 -#define GMAC_AN_CTRL 0x000000e0 -#define GMAC_AN_STATUS 0x000000e4 -#define GMAC_AN_ADV 0x000000e8 -#define GMAC_AN_LPA 0x000000ec +#define GMAC_PCS_BASE 0x000000e0 +#define GMAC_PHYIF_CONTROL_STATUS 0x000000f8 #define GMAC_PMT 0x000000c0 #define GMAC_VERSION 0x00000110 #define GMAC_DEBUG 0x00000114 @@ -64,19 +62,8 @@ enum dwmac4_irq_status { mmc_rx_irq = 0x00000200, mmc_irq = 0x00000100, pmt_irq = 0x00000010, - pcs_ane_irq = 0x00000004, - pcs_link_irq = 0x00000002, }; -/* MAC Auto-Neg bitmap*/ -#define GMAC_AN_CTRL_RAN BIT(9) -#define GMAC_AN_CTRL_ANE BIT(12) -#define GMAC_AN_CTRL_ELE BIT(14) -#define GMAC_AN_FD BIT(5) -#define GMAC_AN_HD BIT(6) -#define GMAC_AN_PSE_MASK GENMASK(8, 7) -#define GMAC_AN_PSE_SHIFT 7 - /* MAC PMT bitmap */ enum power_event { pointer_reset = 0x80000000, @@ -250,6 +237,23 @@ enum power_event { #define MTL_DEBUG_RRCSTS_FLUSH 3 #define MTL_DEBUG_RWCSTS BIT(0) +/* SGMII/RGMII status register */ +#define GMAC_PHYIF_CTRLSTATUS_TC BIT(0) +#define GMAC_PHYIF_CTRLSTATUS_LUD BIT(1) +#define GMAC_PHYIF_CTRLSTATUS_SMIDRXS BIT(4) +#define GMAC_PHYIF_CTRLSTATUS_LNKMOD BIT(16) +#define GMAC_PHYIF_CTRLSTATUS_SPEED GENMASK(18, 17) +#define GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT 17 +#define GMAC_PHYIF_CTRLSTATUS_LNKSTS BIT(19) +#define GMAC_PHYIF_CTRLSTATUS_JABTO BIT(20) +#define GMAC_PHYIF_CTRLSTATUS_FALSECARDET BIT(21) +/* LNKMOD */ +#define GMAC_PHYIF_CTRLSTATUS_LNKMOD_MASK 0x1 +/* LNKSPEED */ +#define GMAC_PHYIF_CTRLSTATUS_SPEED_125 0x2 +#define GMAC_PHYIF_CTRLSTATUS_SPEED_25 0x1 +#define GMAC_PHYIF_CTRLSTATUS_SPEED_2_5 0x0 + extern const struct stmmac_dma_ops dwmac4_dma_ops; extern const struct stmmac_dma_ops dwmac410_dma_ops; #endif /* __DWMAC4_H__ */ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index 44da877d2483..207d8bb0c80b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/ethtool.h> #include <linux/io.h> +#include "stmmac_pcs.h" #include "dwmac4.h" static void dwmac4_core_init(struct mac_device_info *hw, int mtu) @@ -190,39 +191,53 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex, } } -static void dwmac4_ctrl_ane(struct mac_device_info *hw, bool restart) +static void dwmac4_ctrl_ane(void __iomem *ioaddr, bool ane, bool srgmi_ral, + bool loopback) { - void __iomem *ioaddr = hw->pcsr; - - /* auto negotiation enable and External Loopback enable */ - u32 value = GMAC_AN_CTRL_ANE | GMAC_AN_CTRL_ELE; + dwmac_ctrl_ane(ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback); +} - if (restart) - value |= GMAC_AN_CTRL_RAN; +static void dwmac4_rane(void __iomem *ioaddr, bool restart) +{ + dwmac_rane(ioaddr, GMAC_PCS_BASE, restart); +} - writel(value, ioaddr + GMAC_AN_CTRL); +static void dwmac4_get_adv_lp(void __iomem *ioaddr, struct rgmii_adv *adv) +{ + dwmac_get_adv_lp(ioaddr, GMAC_PCS_BASE, adv); } -static void dwmac4_get_adv(struct mac_device_info *hw, struct rgmii_adv *adv) +/* RGMII or SMII interface */ +static void dwmac4_phystatus(void __iomem *ioaddr, struct stmmac_extra_stats *x) { - void __iomem *ioaddr = hw->pcsr; - u32 value = readl(ioaddr + GMAC_AN_ADV); + u32 status; - if (value & GMAC_AN_FD) - adv->duplex = DUPLEX_FULL; - if (value & GMAC_AN_HD) - adv->duplex |= DUPLEX_HALF; + status = readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS); + x->irq_rgmii_n++; - adv->pause = (value & GMAC_AN_PSE_MASK) >> GMAC_AN_PSE_SHIFT; + /* Check the link status */ + if (status & GMAC_PHYIF_CTRLSTATUS_LNKSTS) { + int speed_value; - value = readl(ioaddr + GMAC_AN_LPA); + x->pcs_link = 1; - if (value & GMAC_AN_FD) - adv->lp_duplex = DUPLEX_FULL; - if (value & GMAC_AN_HD) - adv->lp_duplex = DUPLEX_HALF; + speed_value = ((status & GMAC_PHYIF_CTRLSTATUS_SPEED) >> + GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT); + if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_125) + x->pcs_speed = SPEED_1000; + else if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_25) + x->pcs_speed = SPEED_100; + else + x->pcs_speed = SPEED_10; + + x->pcs_duplex = (status & GMAC_PHYIF_CTRLSTATUS_LNKMOD_MASK); - adv->lp_pause = (value & GMAC_AN_PSE_MASK) >> GMAC_AN_PSE_SHIFT; + pr_info("Link is Up - %d/%s\n", (int)x->pcs_speed, + x->pcs_duplex ? "Full" : "Half"); + } else { + x->pcs_link = 0; + pr_info("Link is Down\n"); + } } static int dwmac4_irq_status(struct mac_device_info *hw, @@ -248,11 +263,6 @@ static int dwmac4_irq_status(struct mac_device_info *hw, x->irq_receive_pmt_irq_n++; } - if ((intr_status & pcs_ane_irq) || (intr_status & pcs_link_irq)) { - readl(ioaddr + GMAC_AN_STATUS); - x->irq_pcs_ane_n++; - } - mtl_int_qx_status = readl(ioaddr + MTL_INT_STATUS); /* Check MTL Interrupt: Currently only one queue is used: Q0. */ if (mtl_int_qx_status & MTL_INT_Q0) { @@ -267,6 +277,10 @@ static int dwmac4_irq_status(struct mac_device_info *hw, } } + dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x); + if (intr_status & PCS_RGSMIIIS_IRQ) + dwmac4_phystatus(ioaddr, x); + return ret; } @@ -363,8 +377,9 @@ static const struct stmmac_ops dwmac4_ops = { .pmt = dwmac4_pmt, .set_umac_addr = dwmac4_set_umac_addr, .get_umac_addr = dwmac4_get_umac_addr, - .ctrl_ane = dwmac4_ctrl_ane, - .get_adv = dwmac4_get_adv, + .pcs_ctrl_ane = dwmac4_ctrl_ane, + .pcs_rane = dwmac4_rane, + .pcs_get_adv_lp = dwmac4_get_adv_lp, .debug = dwmac4_debug, .set_filter = dwmac4_set_filter, }; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c index e2b98b01647e..a5f4f46da42b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -289,10 +289,10 @@ static int stmmac_ethtool_getsettings(struct net_device *dev, ethtool_cmd_speed_set(cmd, priv->xstats.pcs_speed); /* Get and convert ADV/LP_ADV from the HW AN registers */ - if (!priv->hw->mac->get_adv) + if (!priv->hw->mac->pcs_get_adv_lp) return -EOPNOTSUPP; /* should never happen indeed */ - priv->hw->mac->get_adv(priv->hw, &adv); + priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv); /* Encoding of PSE bits is defined in 802.3z, 37.2.1.4 */ @@ -376,8 +376,10 @@ static int stmmac_ethtool_setsettings(struct net_device *dev, ADVERTISED_10baseT_Full); spin_lock(&priv->lock); - if (priv->hw->mac->ctrl_ane) - priv->hw->mac->ctrl_ane(priv->hw, 1); + + if (priv->hw->mac->pcs_ctrl_ane) + priv->hw->mac->pcs_ctrl_ane(priv->ioaddr, 1, 0, 0); + spin_unlock(&priv->lock); return 0; @@ -452,11 +454,22 @@ stmmac_get_pauseparam(struct net_device *netdev, { struct stmmac_priv *priv = netdev_priv(netdev); - if (priv->pcs) /* FIXME */ - return; - pause->rx_pause = 0; pause->tx_pause = 0; + + if (priv->pcs && priv->hw->mac->pcs_get_adv_lp) { + struct rgmii_adv adv_lp; + + pause->autoneg = 1; + priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv_lp); + if (!adv_lp.pause) + return; + } else { + if (!(priv->phydev->supported & SUPPORTED_Pause) || + !(priv->phydev->supported & SUPPORTED_Asym_Pause)) + return; + } + pause->autoneg = priv->phydev->autoneg; if (priv->flow_ctrl & FLOW_RX) @@ -473,10 +486,19 @@ stmmac_set_pauseparam(struct net_device *netdev, struct stmmac_priv *priv = netdev_priv(netdev); struct phy_device *phy = priv->phydev; int new_pause = FLOW_OFF; - int ret = 0; - if (priv->pcs) /* FIXME */ - return -EOPNOTSUPP; + if (priv->pcs && priv->hw->mac->pcs_get_adv_lp) { + struct rgmii_adv adv_lp; + + pause->autoneg = 1; + priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv_lp); + if (!adv_lp.pause) + return -EOPNOTSUPP; + } else { + if (!(phy->supported & SUPPORTED_Pause) || + !(phy->supported & SUPPORTED_Asym_Pause)) + return -EOPNOTSUPP; + } if (pause->rx_pause) new_pause |= FLOW_RX; @@ -485,14 +507,14 @@ stmmac_set_pauseparam(struct net_device *netdev, priv->flow_ctrl = new_pause; phy->autoneg = pause->autoneg; - if (phy->autoneg) { if (netif_running(netdev)) - ret = phy_start_aneg(phy); - } else - priv->hw->mac->flow_ctrl(priv->hw, phy->duplex, - priv->flow_ctrl, priv->pause); - return ret; + return phy_start_aneg(phy); + } + + priv->hw->mac->flow_ctrl(priv->hw, phy->duplex, priv->flow_ctrl, + priv->pause); + return 0; } static void stmmac_get_ethtool_stats(struct net_device *dev, diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index a473c182c91d..6c43d6825172 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1714,8 +1714,8 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp) priv->hw->dma->rx_watchdog(priv->ioaddr, MAX_DMA_RIWT); } - if (priv->pcs && priv->hw->mac->ctrl_ane) - priv->hw->mac->ctrl_ane(priv->hw, 0); + if (priv->pcs && priv->hw->mac->pcs_ctrl_ane) + priv->hw->mac->pcs_ctrl_ane(priv->hw, 1, 0, 0); /* set TX ring length */ if (priv->hw->dma->set_tx_ring_len) @@ -2809,6 +2809,14 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id) priv->rx_tail_addr, STMMAC_CHAN0); } + + /* PCS link status */ + if (priv->pcs) { + if (priv->xstats.pcs_link) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + } } /* To handle DMA interrupts */ diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h new file mode 100644 index 000000000000..eba41c24b7a7 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h @@ -0,0 +1,159 @@ +/* + * stmmac_pcs.h: Physical Coding Sublayer Header File + * + * Copyright (C) 2016 STMicroelectronics (R&D) Limited + * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __STMMAC_PCS_H__ +#define __STMMAC_PCS_H__ + +#include <linux/slab.h> +#include <linux/io.h> +#include "common.h" + +/* PCS registers (AN/TBI/SGMII/RGMII) offsets */ +#define GMAC_AN_CTRL(x) (x) /* AN control */ +#define GMAC_AN_STATUS(x) (x + 0x4) /* AN status */ +#define GMAC_ANE_ADV(x) (x + 0x8) /* ANE Advertisement */ +#define GMAC_ANE_LPA(x) (x + 0xc) /* ANE link partener ability */ +#define GMAC_ANE_EXP(x) (x + 0x10) /* ANE expansion */ +#define GMAC_TBI(x) (x + 0x14) /* TBI extend status */ + +/* AN Configuration defines */ +#define GMAC_AN_CTRL_RAN BIT(9) /* Restart Auto-Negotiation */ +#define GMAC_AN_CTRL_ANE BIT(12) /* Auto-Negotiation Enable */ +#define GMAC_AN_CTRL_ELE BIT(14) /* External Loopback Enable */ +#define GMAC_AN_CTRL_ECD BIT(16) /* Enable Comma Detect */ +#define GMAC_AN_CTRL_LR BIT(17) /* Lock to Reference */ +#define GMAC_AN_CTRL_SGMRAL BIT(18) /* SGMII RAL Control */ + +/* AN Status defines */ +#define GMAC_AN_STATUS_LS BIT(2) /* Link Status 0:down 1:up */ +#define GMAC_AN_STATUS_ANA BIT(3) /* Auto-Negotiation Ability */ +#define GMAC_AN_STATUS_ANC BIT(5) /* Auto-Negotiation Complete */ +#define GMAC_AN_STATUS_ES BIT(8) /* Extended Status */ + +/* ADV and LPA defines */ +#define GMAC_ANE_FD BIT(5) +#define GMAC_ANE_HD BIT(6) +#define GMAC_ANE_PSE GENMASK(8, 7) +#define GMAC_ANE_PSE_SHIFT 7 +#define GMAC_ANE_RFE GENMASK(13, 12) +#define GMAC_ANE_RFE_SHIFT 12 +#define GMAC_ANE_ACK BIT(14) + +/** + * dwmac_pcs_isr - TBI, RTBI, or SGMII PHY ISR + * @ioaddr: IO registers pointer + * @reg: Base address of the AN Control Register. + * @intr_status: GMAC core interrupt status + * @x: pointer to log these events as stats + * Description: it is the ISR for PCS events: Auto-Negotiation Completed and + * Link status. + */ +static inline void dwmac_pcs_isr(void __iomem *ioaddr, u32 reg, + unsigned int intr_status, + struct stmmac_extra_stats *x) +{ + u32 val = readl(ioaddr + GMAC_AN_STATUS(reg)); + + if (intr_status & PCS_ANE_IRQ) { + x->irq_pcs_ane_n++; + if (val & GMAC_AN_STATUS_ANC) + pr_info("stmmac_pcs: ANE process completed\n"); + } + + if (intr_status & PCS_LINK_IRQ) { + x->irq_pcs_link_n++; + if (val & GMAC_AN_STATUS_LS) + pr_info("stmmac_pcs: Link Up\n"); + else + pr_info("stmmac_pcs: Link Down\n"); + } +} + +/** + * dwmac_rane - To restart ANE + * @ioaddr: IO registers pointer + * @reg: Base address of the AN Control Register. + * @restart: to restart ANE + * Description: this is to just restart the Auto-Negotiation. + */ +static inline void dwmac_rane(void __iomem *ioaddr, u32 reg, bool restart) +{ + u32 value = readl(ioaddr + GMAC_AN_CTRL(reg)); + + if (restart) + value |= GMAC_AN_CTRL_RAN; + + writel(value, ioaddr + GMAC_AN_CTRL(reg)); +} + +/** + * dwmac_ctrl_ane - To program the AN Control Register. + * @ioaddr: IO registers pointer + * @reg: Base address of the AN Control Register. + * @ane: to enable the auto-negotiation + * @srgmi_ral: to manage MAC-2-MAC SGMII connections. + * @loopback: to cause the PHY to loopback tx data into rx path. + * Description: this is the main function to configure the AN control register + * and init the ANE, select loopback (usually for debugging purpose) and + * configure SGMII RAL. + */ +static inline void dwmac_ctrl_ane(void __iomem *ioaddr, u32 reg, bool ane, + bool srgmi_ral, bool loopback) +{ + u32 value = readl(ioaddr + GMAC_AN_CTRL(reg)); + + /* Enable and restart the Auto-Negotiation */ + if (ane) + value |= GMAC_AN_CTRL_ANE | GMAC_AN_CTRL_RAN; + + /* In case of MAC-2-MAC connection, block is configured to operate + * according to MAC conf register. + */ + if (srgmi_ral) + value |= GMAC_AN_CTRL_SGMRAL; + + if (loopback) + value |= GMAC_AN_CTRL_ELE; + + writel(value, ioaddr + GMAC_AN_CTRL(reg)); +} + +/** + * dwmac_get_adv_lp - Get ADV and LP cap + * @ioaddr: IO registers pointer + * @reg: Base address of the AN Control Register. + * @adv_lp: structure to store the adv,lp status + * Description: this is to expose the ANE advertisement and Link partner ability + * status to ethtool support. + */ +static inline void dwmac_get_adv_lp(void __iomem *ioaddr, u32 reg, + struct rgmii_adv *adv_lp) +{ + u32 value = readl(ioaddr + GMAC_ANE_ADV(reg)); + + if (value & GMAC_ANE_FD) + adv_lp->duplex = DUPLEX_FULL; + if (value & GMAC_ANE_HD) + adv_lp->duplex |= DUPLEX_HALF; + + adv_lp->pause = (value & GMAC_ANE_PSE) >> GMAC_ANE_PSE_SHIFT; + + value = readl(ioaddr + GMAC_ANE_LPA(reg)); + + if (value & GMAC_ANE_FD) + adv_lp->lp_duplex = DUPLEX_FULL; + if (value & GMAC_ANE_HD) + adv_lp->lp_duplex = DUPLEX_HALF; + + adv_lp->lp_pause = (value & GMAC_ANE_PSE) >> GMAC_ANE_PSE_SHIFT; +} +#endif /* __STMMAC_PCS_H__ */ |