diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/common.h | 31 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 20 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 101 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/ring_mode.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 71 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 57 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 234 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 31 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 8 |
12 files changed, 487 insertions, 78 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 036428348faa..9f448279e12a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -13,7 +13,7 @@ config STMMAC_ETH if STMMAC_ETH config STMMAC_PLATFORM - tristate "STMMAC platform bus support" + bool "STMMAC Platform bus support" depends on STMMAC_ETH default y ---help--- @@ -26,7 +26,7 @@ config STMMAC_PLATFORM If unsure, say N. config STMMAC_PCI - tristate "STMMAC support on PCI bus (EXPERIMENTAL)" + bool "STMMAC PCI bus support (EXPERIMENTAL)" depends on STMMAC_ETH && PCI && EXPERIMENTAL ---help--- This is to select the Synopsys DWMAC available on PCI devices, diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index bcd54d6e94fd..e2d083228f3a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -95,6 +95,16 @@ struct stmmac_extra_stats { unsigned long poll_n; unsigned long sched_timer_n; unsigned long normal_irq_n; + unsigned long mmc_tx_irq_n; + unsigned long mmc_rx_irq_n; + unsigned long mmc_rx_csum_offload_irq_n; + /* EEE */ + unsigned long irq_receive_pmt_irq_n; + unsigned long irq_tx_path_in_lpi_mode_n; + unsigned long irq_tx_path_exit_lpi_mode_n; + unsigned long irq_rx_path_in_lpi_mode_n; + unsigned long irq_rx_path_exit_lpi_mode_n; + unsigned long phy_eee_wakeup_error_n; }; /* CSR Frequency Access Defines*/ @@ -162,6 +172,17 @@ enum tx_dma_irq_status { handle_tx_rx = 3, }; +enum core_specific_irq_mask { + core_mmc_tx_irq = 1, + core_mmc_rx_irq = 2, + core_mmc_rx_csum_offload_irq = 4, + core_irq_receive_pmt_irq = 8, + core_irq_tx_path_in_lpi_mode = 16, + core_irq_tx_path_exit_lpi_mode = 32, + core_irq_rx_path_in_lpi_mode = 64, + core_irq_rx_path_exit_lpi_mode = 128, +}; + /* DMA HW capabilities */ struct dma_features { unsigned int mbps_10_100; @@ -208,6 +229,10 @@ struct dma_features { #define MAC_ENABLE_TX 0x00000008 /* Transmitter Enable */ #define MAC_RNABLE_RX 0x00000004 /* Receiver Enable */ +/* Default LPI timers */ +#define STMMAC_DEFAULT_LIT_LS_TIMER 0x3E8 +#define STMMAC_DEFAULT_TWT_LS_TIMER 0x0 + struct stmmac_desc_ops { /* DMA RX descriptor ring initialization */ void (*init_rx_desc) (struct dma_desc *p, unsigned int ring_size, @@ -278,7 +303,7 @@ struct stmmac_ops { /* Dump MAC registers */ void (*dump_regs) (void __iomem *ioaddr); /* Handle extra events on specific interrupts hw dependent */ - void (*host_irq_status) (void __iomem *ioaddr); + int (*host_irq_status) (void __iomem *ioaddr); /* Multicast filter setting */ void (*set_filter) (struct net_device *dev, int id); /* Flow control setting */ @@ -291,6 +316,10 @@ struct stmmac_ops { unsigned int reg_n); void (*get_umac_addr) (void __iomem *ioaddr, unsigned char *addr, unsigned int reg_n); + void (*set_eee_mode) (void __iomem *ioaddr); + void (*reset_eee_mode) (void __iomem *ioaddr); + void (*set_eee_timer) (void __iomem *ioaddr, int ls, int tw); + void (*set_eee_pls) (void __iomem *ioaddr, int link); }; struct mac_link { diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h index 23478bf4ed7a..f90fcb5f9573 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h @@ -36,6 +36,7 @@ #define GMAC_INT_STATUS 0x00000038 /* interrupt status register */ enum dwmac1000_irq_status { + lpiis_irq = 0x400, time_stamp_irq = 0x0200, mmc_rx_csum_offload_irq = 0x0080, mmc_tx_irq = 0x0040, @@ -60,6 +61,25 @@ enum power_event { power_down = 0x00000001, }; +/* Energy Efficient Ethernet (EEE) + * + * LPI status, timer and control register offset + */ +#define LPI_CTRL_STATUS 0x0030 +#define LPI_TIMER_CTRL 0x0034 + +/* LPI control and status defines */ +#define LPI_CTRL_STATUS_LPITXA 0x00080000 /* Enable LPI TX Automate */ +#define LPI_CTRL_STATUS_PLSEN 0x00040000 /* Enable PHY Link Status */ +#define LPI_CTRL_STATUS_PLS 0x00020000 /* PHY Link Status */ +#define LPI_CTRL_STATUS_LPIEN 0x00010000 /* LPI Enable */ +#define LPI_CTRL_STATUS_RLPIST 0x00000200 /* Receive LPI state */ +#define LPI_CTRL_STATUS_TLPIST 0x00000100 /* Transmit LPI state */ +#define LPI_CTRL_STATUS_RLPIEX 0x00000008 /* Receive LPI Exit */ +#define LPI_CTRL_STATUS_RLPIEN 0x00000004 /* Receive LPI Entry */ +#define LPI_CTRL_STATUS_TLPIEX 0x00000002 /* Transmit LPI Exit */ +#define LPI_CTRL_STATUS_TLPIEN 0x00000001 /* Transmit LPI Entry */ + /* GMAC HW ADDR regs */ #define GMAC_ADDR_HIGH(reg) (((reg > 15) ? 0x00000800 : 0x00000040) + \ (reg * 8)) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c index b5e4d02f15c9..bfe022605498 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -194,26 +194,107 @@ static void dwmac1000_pmt(void __iomem *ioaddr, unsigned long mode) } -static void dwmac1000_irq_status(void __iomem *ioaddr) +static int dwmac1000_irq_status(void __iomem *ioaddr) { u32 intr_status = readl(ioaddr + GMAC_INT_STATUS); + int status = 0; /* Not used events (e.g. MMC interrupts) are not handled. */ - if ((intr_status & mmc_tx_irq)) - CHIP_DBG(KERN_DEBUG "GMAC: MMC tx interrupt: 0x%08x\n", + if ((intr_status & mmc_tx_irq)) { + CHIP_DBG(KERN_INFO "GMAC: MMC tx interrupt: 0x%08x\n", readl(ioaddr + GMAC_MMC_TX_INTR)); - if (unlikely(intr_status & mmc_rx_irq)) - CHIP_DBG(KERN_DEBUG "GMAC: MMC rx interrupt: 0x%08x\n", + status |= core_mmc_tx_irq; + } + if (unlikely(intr_status & mmc_rx_irq)) { + CHIP_DBG(KERN_INFO "GMAC: MMC rx interrupt: 0x%08x\n", readl(ioaddr + GMAC_MMC_RX_INTR)); - if (unlikely(intr_status & mmc_rx_csum_offload_irq)) - CHIP_DBG(KERN_DEBUG "GMAC: MMC rx csum offload: 0x%08x\n", + status |= core_mmc_rx_irq; + } + if (unlikely(intr_status & mmc_rx_csum_offload_irq)) { + CHIP_DBG(KERN_INFO "GMAC: MMC rx csum offload: 0x%08x\n", readl(ioaddr + GMAC_MMC_RX_CSUM_OFFLOAD)); + status |= core_mmc_rx_csum_offload_irq; + } if (unlikely(intr_status & pmt_irq)) { - CHIP_DBG(KERN_DEBUG "GMAC: received Magic frame\n"); + CHIP_DBG(KERN_INFO "GMAC: received Magic frame\n"); /* clear the PMT bits 5 and 6 by reading the PMT * status register. */ readl(ioaddr + GMAC_PMT); + status |= core_irq_receive_pmt_irq; } + /* MAC trx/rx EEE LPI entry/exit interrupts */ + if (intr_status & lpiis_irq) { + /* Clean LPI interrupt by reading the Reg 12 */ + u32 lpi_status = readl(ioaddr + LPI_CTRL_STATUS); + + if (lpi_status & LPI_CTRL_STATUS_TLPIEN) { + CHIP_DBG(KERN_INFO "GMAC TX entered in LPI\n"); + status |= core_irq_tx_path_in_lpi_mode; + } + if (lpi_status & LPI_CTRL_STATUS_TLPIEX) { + CHIP_DBG(KERN_INFO "GMAC TX exit from LPI\n"); + status |= core_irq_tx_path_exit_lpi_mode; + } + if (lpi_status & LPI_CTRL_STATUS_RLPIEN) { + CHIP_DBG(KERN_INFO "GMAC RX entered in LPI\n"); + status |= core_irq_rx_path_in_lpi_mode; + } + if (lpi_status & LPI_CTRL_STATUS_RLPIEX) { + CHIP_DBG(KERN_INFO "GMAC RX exit from LPI\n"); + status |= core_irq_rx_path_exit_lpi_mode; + } + } + + return status; +} + +static void dwmac1000_set_eee_mode(void __iomem *ioaddr) +{ + u32 value; + + /* Enable the link status receive on RGMII, SGMII ore SMII + * receive path and instruct the transmit to enter in LPI + * state. */ + value = readl(ioaddr + LPI_CTRL_STATUS); + value |= LPI_CTRL_STATUS_LPIEN | LPI_CTRL_STATUS_LPITXA; + writel(value, ioaddr + LPI_CTRL_STATUS); +} + +static void dwmac1000_reset_eee_mode(void __iomem *ioaddr) +{ + u32 value; + + value = readl(ioaddr + LPI_CTRL_STATUS); + value &= ~(LPI_CTRL_STATUS_LPIEN | LPI_CTRL_STATUS_LPITXA); + writel(value, ioaddr + LPI_CTRL_STATUS); +} + +static void dwmac1000_set_eee_pls(void __iomem *ioaddr, int link) +{ + u32 value; + + value = readl(ioaddr + LPI_CTRL_STATUS); + + if (link) + value |= LPI_CTRL_STATUS_PLS; + else + value &= ~LPI_CTRL_STATUS_PLS; + + writel(value, ioaddr + LPI_CTRL_STATUS); +} + +static void dwmac1000_set_eee_timer(void __iomem *ioaddr, int ls, int tw) +{ + int value = ((tw & 0xffff)) | ((ls & 0x7ff) << 16); + + /* Program the timers in the LPI timer control register: + * LS: minimum time (ms) for which the link + * status from PHY should be ok before transmitting + * the LPI pattern. + * TW: minimum time (us) for which the core waits + * after it has stopped transmitting the LPI pattern. + */ + writel(value, ioaddr + LPI_TIMER_CTRL); } static const struct stmmac_ops dwmac1000_ops = { @@ -226,6 +307,10 @@ static const struct stmmac_ops dwmac1000_ops = { .pmt = dwmac1000_pmt, .set_umac_addr = dwmac1000_set_umac_addr, .get_umac_addr = dwmac1000_get_umac_addr, + .set_eee_mode = dwmac1000_set_eee_mode, + .reset_eee_mode = dwmac1000_reset_eee_mode, + .set_eee_timer = dwmac1000_set_eee_timer, + .set_eee_pls = dwmac1000_set_eee_pls, }; struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c index 19e0f4eed2bc..f83210e7c221 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c @@ -72,9 +72,9 @@ static int dwmac100_rx_ipc_enable(void __iomem *ioaddr) return 0; } -static void dwmac100_irq_status(void __iomem *ioaddr) +static int dwmac100_irq_status(void __iomem *ioaddr) { - return; + return 0; } static void dwmac100_set_umac_addr(void __iomem *ioaddr, unsigned char *addr, diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h index 6e0360f9cfde..e678ce39d014 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h @@ -70,6 +70,7 @@ #define DMA_INTR_DEFAULT_MASK (DMA_INTR_NORMAL | DMA_INTR_ABNORMAL) /* DMA Status register defines */ +#define DMA_STATUS_GLPII 0x40000000 /* GMAC LPI interrupt */ #define DMA_STATUS_GPI 0x10000000 /* PMT interrupt */ #define DMA_STATUS_GMI 0x08000000 /* MMC interrupt */ #define DMA_STATUS_GLI 0x04000000 /* GMAC Line interface int */ diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c index fb8377da1687..4b785e10f2ed 100644 --- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c +++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c @@ -51,7 +51,7 @@ static unsigned int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum) desc->des3 = desc->des2 + BUF_SIZE_4KiB; priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum); - + wmb(); entry = (++priv->cur_tx) % txsize; desc = priv->dma_tx + entry; @@ -59,6 +59,7 @@ static unsigned int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum) len, DMA_TO_DEVICE); desc->des3 = desc->des2 + BUF_SIZE_4KiB; priv->hw->desc->prepare_tx_desc(desc, 0, len, csum); + wmb(); priv->hw->desc->set_tx_owner(desc); priv->tx_skbuff[entry] = NULL; } else { diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 6b5d060ee9de..ab4c376cb276 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -26,6 +26,7 @@ #include <linux/clk.h> #include <linux/stmmac.h> #include <linux/phy.h> +#include <linux/pci.h> #include "common.h" #ifdef CONFIG_STMMAC_TIMER #include "stmmac_timer.h" @@ -86,6 +87,12 @@ struct stmmac_priv { #endif int clk_csr; int synopsys_id; + struct timer_list eee_ctrl_timer; + bool tx_path_in_lpi_mode; + int lpi_irq; + int eee_enabled; + int eee_active; + int tx_lpi_timer; }; extern int phyaddr; @@ -95,7 +102,6 @@ extern int stmmac_mdio_register(struct net_device *ndev); extern void stmmac_set_ethtool_ops(struct net_device *netdev); extern const struct stmmac_desc_ops enh_desc_ops; extern const struct stmmac_desc_ops ndesc_ops; - int stmmac_freeze(struct net_device *ndev); int stmmac_restore(struct net_device *ndev); int stmmac_resume(struct net_device *ndev); @@ -104,12 +110,14 @@ int stmmac_dvr_remove(struct net_device *ndev); struct stmmac_priv *stmmac_dvr_probe(struct device *device, struct plat_stmmacenet_data *plat_dat, void __iomem *addr); +void stmmac_disable_eee_mode(struct stmmac_priv *priv); +bool stmmac_eee_init(struct stmmac_priv *priv); #ifdef CONFIG_HAVE_CLK static inline int stmmac_clk_enable(struct stmmac_priv *priv) { if (!IS_ERR(priv->stmmac_clk)) - return clk_enable(priv->stmmac_clk); + return clk_prepare_enable(priv->stmmac_clk); return 0; } @@ -119,7 +127,7 @@ static inline void stmmac_clk_disable(struct stmmac_priv *priv) if (IS_ERR(priv->stmmac_clk)) return; - clk_disable(priv->stmmac_clk); + clk_disable_unprepare(priv->stmmac_clk); } static inline int stmmac_clk_get(struct stmmac_priv *priv) { @@ -143,3 +151,60 @@ static inline int stmmac_clk_get(struct stmmac_priv *priv) return 0; } #endif /* CONFIG_HAVE_CLK */ + + +#ifdef CONFIG_STMMAC_PLATFORM +extern struct platform_driver stmmac_pltfr_driver; +static inline int stmmac_register_platform(void) +{ + int err; + + err = platform_driver_register(&stmmac_pltfr_driver); + if (err) + pr_err("stmmac: failed to register the platform driver\n"); + + return err; +} +static inline void stmmac_unregister_platform(void) +{ + platform_driver_register(&stmmac_pltfr_driver); +} +#else +static inline int stmmac_register_platform(void) +{ + pr_debug("stmmac: do not register the platf driver\n"); + + return -EINVAL; +} +static inline void stmmac_unregister_platform(void) +{ +} +#endif /* CONFIG_STMMAC_PLATFORM */ + +#ifdef CONFIG_STMMAC_PCI +extern struct pci_driver stmmac_pci_driver; +static inline int stmmac_register_pci(void) +{ + int err; + + err = pci_register_driver(&stmmac_pci_driver); + if (err) + pr_err("stmmac: failed to register the PCI driver\n"); + + return err; +} +static inline void stmmac_unregister_pci(void) +{ + pci_unregister_driver(&stmmac_pci_driver); +} +#else +static inline int stmmac_register_pci(void) +{ + pr_debug("stmmac: do not register the PCI driver\n"); + + return -EINVAL; +} +static inline void stmmac_unregister_pci(void) +{ +} +#endif /* CONFIG_STMMAC_PCI */ diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c index ce431846fc6f..76fd61aa005f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -93,6 +93,16 @@ static const struct stmmac_stats stmmac_gstrings_stats[] = { STMMAC_STAT(poll_n), STMMAC_STAT(sched_timer_n), STMMAC_STAT(normal_irq_n), + STMMAC_STAT(normal_irq_n), + STMMAC_STAT(mmc_tx_irq_n), + STMMAC_STAT(mmc_rx_irq_n), + STMMAC_STAT(mmc_rx_csum_offload_irq_n), + STMMAC_STAT(irq_receive_pmt_irq_n), + STMMAC_STAT(irq_tx_path_in_lpi_mode_n), + STMMAC_STAT(irq_tx_path_exit_lpi_mode_n), + STMMAC_STAT(irq_rx_path_in_lpi_mode_n), + STMMAC_STAT(irq_rx_path_exit_lpi_mode_n), + STMMAC_STAT(phy_eee_wakeup_error_n), }; #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats) @@ -366,6 +376,11 @@ static void stmmac_get_ethtool_stats(struct net_device *dev, (*(u32 *)p); } } + if (priv->eee_enabled) { + int val = phy_get_eee_err(priv->phydev); + if (val) + priv->xstats.phy_eee_wakeup_error_n = val; + } } for (i = 0; i < STMMAC_STATS_LEN; i++) { char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset; @@ -464,6 +479,46 @@ static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) return 0; } +static int stmmac_ethtool_op_get_eee(struct net_device *dev, + struct ethtool_eee *edata) +{ + struct stmmac_priv *priv = netdev_priv(dev); + + if (!priv->dma_cap.eee) + return -EOPNOTSUPP; + + edata->eee_enabled = priv->eee_enabled; + edata->eee_active = priv->eee_active; + edata->tx_lpi_timer = priv->tx_lpi_timer; + + return phy_ethtool_get_eee(priv->phydev, edata); +} + +static int stmmac_ethtool_op_set_eee(struct net_device *dev, + struct ethtool_eee *edata) +{ + struct stmmac_priv *priv = netdev_priv(dev); + + priv->eee_enabled = edata->eee_enabled; + + if (!priv->eee_enabled) + stmmac_disable_eee_mode(priv); + else { + /* We are asking for enabling the EEE but it is safe + * to verify all by invoking the eee_init function. + * In case of failure it will return an error. + */ + priv->eee_enabled = stmmac_eee_init(priv); + if (!priv->eee_enabled) + return -EOPNOTSUPP; + + /* Do not change tx_lpi_timer in case of failure */ + priv->tx_lpi_timer = edata->tx_lpi_timer; + } + + return phy_ethtool_set_eee(priv->phydev, edata); +} + static const struct ethtool_ops stmmac_ethtool_ops = { .begin = stmmac_check_if_running, .get_drvinfo = stmmac_ethtool_getdrvinfo, @@ -480,6 +535,8 @@ static const struct ethtool_ops stmmac_ethtool_ops = { .get_strings = stmmac_get_strings, .get_wol = stmmac_get_wol, .set_wol = stmmac_set_wol, + .get_eee = stmmac_ethtool_op_get_eee, + .set_eee = stmmac_ethtool_op_set_eee, .get_sset_count = stmmac_get_sset_count, .get_ts_info = ethtool_op_get_ts_info, }; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 70966330f44e..f6b04c1a3672 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -133,6 +133,12 @@ static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN | NETIF_MSG_TIMER); +#define STMMAC_DEFAULT_LPI_TIMER 1000 +static int eee_timer = STMMAC_DEFAULT_LPI_TIMER; +module_param(eee_timer, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(eee_timer, "LPI tx expiration time in msec"); +#define STMMAC_LPI_TIMER(x) (jiffies + msecs_to_jiffies(x)) + static irqreturn_t stmmac_interrupt(int irq, void *dev_id); #ifdef CONFIG_STMMAC_DEBUG_FS @@ -161,6 +167,8 @@ static void stmmac_verify_args(void) flow_ctrl = FLOW_OFF; if (unlikely((pause < 0) || (pause > 0xffff))) pause = PAUSE_TIME; + if (eee_timer < 0) + eee_timer = STMMAC_DEFAULT_LPI_TIMER; } static void stmmac_clk_csr_set(struct stmmac_priv *priv) @@ -229,6 +237,85 @@ static inline void stmmac_hw_fix_mac_speed(struct stmmac_priv *priv) phydev->speed); } +static void stmmac_enable_eee_mode(struct stmmac_priv *priv) +{ + /* Check and enter in LPI mode */ + if ((priv->dirty_tx == priv->cur_tx) && + (priv->tx_path_in_lpi_mode == false)) + priv->hw->mac->set_eee_mode(priv->ioaddr); +} + +void stmmac_disable_eee_mode(struct stmmac_priv *priv) +{ + /* Exit and disable EEE in case of we are are in LPI state. */ + priv->hw->mac->reset_eee_mode(priv->ioaddr); + del_timer_sync(&priv->eee_ctrl_timer); + priv->tx_path_in_lpi_mode = false; +} + +/** + * stmmac_eee_ctrl_timer + * @arg : data hook + * Description: + * If there is no data transfer and if we are not in LPI state, + * then MAC Transmitter can be moved to LPI state. + */ +static void stmmac_eee_ctrl_timer(unsigned long arg) +{ + struct stmmac_priv *priv = (struct stmmac_priv *)arg; + + stmmac_enable_eee_mode(priv); + mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_TIMER(eee_timer)); +} + +/** + * stmmac_eee_init + * @priv: private device pointer + * Description: + * If the EEE support has been enabled while configuring the driver, + * if the GMAC actually supports the EEE (from the HW cap reg) and the + * phy can also manage EEE, so enable the LPI state and start the timer + * to verify if the tx path can enter in LPI state. + */ +bool stmmac_eee_init(struct stmmac_priv *priv) +{ + bool ret = false; + + /* MAC core supports the EEE feature. */ + if (priv->dma_cap.eee) { + /* Check if the PHY supports EEE */ + if (phy_init_eee(priv->phydev, 1)) + goto out; + + priv->eee_active = 1; + init_timer(&priv->eee_ctrl_timer); + priv->eee_ctrl_timer.function = stmmac_eee_ctrl_timer; + priv->eee_ctrl_timer.data = (unsigned long)priv; + priv->eee_ctrl_timer.expires = STMMAC_LPI_TIMER(eee_timer); + add_timer(&priv->eee_ctrl_timer); + + priv->hw->mac->set_eee_timer(priv->ioaddr, + STMMAC_DEFAULT_LIT_LS_TIMER, + priv->tx_lpi_timer); + + pr_info("stmmac: Energy-Efficient Ethernet initialized\n"); + + ret = true; + } +out: + return ret; +} + +static void stmmac_eee_adjust(struct stmmac_priv *priv) +{ + /* When the EEE has been already initialised we have to + * modify the PLS bit in the LPI ctrl & status reg according + * to the PHY link status. For this reason. + */ + if (priv->eee_enabled) + priv->hw->mac->set_eee_pls(priv->ioaddr, priv->phydev->link); +} + /** * stmmac_adjust_link * @dev: net device structure @@ -249,6 +336,7 @@ static void stmmac_adjust_link(struct net_device *dev) phydev->addr, phydev->link); spin_lock_irqsave(&priv->lock, flags); + if (phydev->link) { u32 ctrl = readl(priv->ioaddr + MAC_CTRL_REG); @@ -315,6 +403,8 @@ static void stmmac_adjust_link(struct net_device *dev) if (new_state && netif_msg_link(priv)) phy_print_status(phydev); + stmmac_eee_adjust(priv); + spin_unlock_irqrestore(&priv->lock, flags); DBG(probe, DEBUG, "stmmac_adjust_link: exiting\n"); @@ -332,7 +422,7 @@ static int stmmac_init_phy(struct net_device *dev) { struct stmmac_priv *priv = netdev_priv(dev); struct phy_device *phydev; - char phy_id[MII_BUS_ID_SIZE + 3]; + char phy_id_fmt[MII_BUS_ID_SIZE + 3]; char bus_id[MII_BUS_ID_SIZE]; int interface = priv->plat->interface; priv->oldlink = 0; @@ -346,11 +436,12 @@ static int stmmac_init_phy(struct net_device *dev) snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x", priv->plat->bus_id); - snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id, + snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id, priv->plat->phy_addr); - pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id); + pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id_fmt); - phydev = phy_connect(dev, phy_id, &stmmac_adjust_link, 0, interface); + phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, 0, + interface); if (IS_ERR(phydev)) { pr_err("%s: Could not attach to PHY\n", dev->name); @@ -677,7 +768,7 @@ static void stmmac_tx(struct stmmac_priv *priv) priv->hw->desc->release_tx_desc(p); - entry = (++priv->dirty_tx) % txsize; + priv->dirty_tx++; } if (unlikely(netif_queue_stopped(priv->dev) && stmmac_tx_avail(priv) > STMMAC_TX_THRESH(priv))) { @@ -689,6 +780,11 @@ static void stmmac_tx(struct stmmac_priv *priv) } netif_tx_unlock(priv->dev); } + + if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) { + stmmac_enable_eee_mode(priv); + mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_TIMER(eee_timer)); + } spin_unlock(&priv->tx_lock); } @@ -833,8 +929,9 @@ static u32 stmmac_get_synopsys_id(struct stmmac_priv *priv) /** * stmmac_selec_desc_mode - * @dev : device pointer - * Description: select the Enhanced/Alternate or Normal descriptors */ + * @priv : private structure + * Description: select the Enhanced/Alternate or Normal descriptors + */ static void stmmac_selec_desc_mode(struct stmmac_priv *priv) { if (priv->plat->enh_desc) { @@ -1026,6 +1123,17 @@ static int stmmac_open(struct net_device *dev) } } + /* Request the IRQ lines */ + if (priv->lpi_irq != -ENXIO) { + ret = request_irq(priv->lpi_irq, stmmac_interrupt, IRQF_SHARED, + dev->name, dev); + if (unlikely(ret < 0)) { + pr_err("%s: ERROR: allocating the LPI IRQ %d (%d)\n", + __func__, priv->lpi_irq, ret); + goto open_error_lpiirq; + } + } + /* Enable the MAC Rx/Tx */ stmmac_set_mac(priv->ioaddr, true); @@ -1061,12 +1169,19 @@ static int stmmac_open(struct net_device *dev) if (priv->phydev) phy_start(priv->phydev); + priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS_TIMER; + priv->eee_enabled = stmmac_eee_init(priv); + napi_enable(&priv->napi); skb_queue_head_init(&priv->rx_recycle); netif_start_queue(dev); return 0; +open_error_lpiirq: + if (priv->wol_irq != dev->irq) + free_irq(priv->wol_irq, dev); + open_error_wolirq: free_irq(dev->irq, dev); @@ -1092,6 +1207,9 @@ static int stmmac_release(struct net_device *dev) { struct stmmac_priv *priv = netdev_priv(dev); + if (priv->eee_enabled) + del_timer_sync(&priv->eee_ctrl_timer); + /* Stop and disconnect the PHY */ if (priv->phydev) { phy_stop(priv->phydev); @@ -1114,6 +1232,8 @@ static int stmmac_release(struct net_device *dev) free_irq(dev->irq, dev); if (priv->wol_irq != dev->irq) free_irq(priv->wol_irq, dev); + if (priv->lpi_irq != -ENXIO) + free_irq(priv->lpi_irq, dev); /* Stop TX/RX DMA and clear the descriptors */ priv->hw->dma->stop_tx(priv->ioaddr); @@ -1163,6 +1283,9 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) spin_lock(&priv->tx_lock); + if (priv->tx_path_in_lpi_mode) + stmmac_disable_eee_mode(priv); + entry = priv->cur_tx % txsize; #ifdef STMMAC_XMIT_DEBUG @@ -1211,6 +1334,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) priv->hw->desc->prepare_tx_desc(desc, 0, len, csum_insertion); wmb(); priv->hw->desc->set_tx_owner(desc); + wmb(); } /* Interrupt on completition only for the latest segment */ @@ -1226,6 +1350,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) /* To avoid raise condition */ priv->hw->desc->set_tx_owner(first); + wmb(); priv->cur_tx++; @@ -1289,6 +1414,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv) } wmb(); priv->hw->desc->set_rx_owner(p + entry); + wmb(); } } @@ -1307,7 +1433,6 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit) display_ring(priv->dma_rx, rxsize); } #endif - count = 0; while (!priv->hw->desc->get_rx_owner(p)) { int status; @@ -1540,10 +1665,37 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id) return IRQ_NONE; } - if (priv->plat->has_gmac) - /* To handle GMAC own interrupts */ - priv->hw->mac->host_irq_status((void __iomem *) dev->base_addr); + /* To handle GMAC own interrupts */ + if (priv->plat->has_gmac) { + int status = priv->hw->mac->host_irq_status((void __iomem *) + dev->base_addr); + if (unlikely(status)) { + if (status & core_mmc_tx_irq) + priv->xstats.mmc_tx_irq_n++; + if (status & core_mmc_rx_irq) + priv->xstats.mmc_rx_irq_n++; + if (status & core_mmc_rx_csum_offload_irq) + priv->xstats.mmc_rx_csum_offload_irq_n++; + if (status & core_irq_receive_pmt_irq) + priv->xstats.irq_receive_pmt_irq_n++; + + /* For LPI we need to save the tx status */ + if (status & core_irq_tx_path_in_lpi_mode) { + priv->xstats.irq_tx_path_in_lpi_mode_n++; + priv->tx_path_in_lpi_mode = true; + } + if (status & core_irq_tx_path_exit_lpi_mode) { + priv->xstats.irq_tx_path_exit_lpi_mode_n++; + priv->tx_path_in_lpi_mode = false; + } + if (status & core_irq_rx_path_in_lpi_mode) + priv->xstats.irq_rx_path_in_lpi_mode_n++; + if (status & core_irq_rx_path_exit_lpi_mode) + priv->xstats.irq_rx_path_exit_lpi_mode_n++; + } + } + /* To handle DMA interrupts */ stmmac_dma_interrupt(priv); return IRQ_HANDLED; @@ -1861,6 +2013,8 @@ static int stmmac_hw_init(struct stmmac_priv *priv) /** * stmmac_dvr_probe * @device: device pointer + * @plat_dat: platform data pointer + * @addr: iobase memory address * Description: this is the main probe function used to * call the alloc_etherdev, allocate the priv structure. */ @@ -2090,6 +2244,34 @@ int stmmac_restore(struct net_device *ndev) } #endif /* CONFIG_PM */ +/* Driver can be configured w/ and w/ both PCI and Platf drivers + * depending on the configuration selected. + */ +static int __init stmmac_init(void) +{ + int err_plt = 0; + int err_pci = 0; + + err_plt = stmmac_register_platform(); + err_pci = stmmac_register_pci(); + + if ((err_pci) && (err_plt)) { + pr_err("stmmac: driver registration failed\n"); + return -EINVAL; + } + + return 0; +} + +static void __exit stmmac_exit(void) +{ + stmmac_unregister_platform(); + stmmac_unregister_pci(); +} + +module_init(stmmac_init); +module_exit(stmmac_exit); + #ifndef MODULE static int __init stmmac_cmdline_opt(char *str) { @@ -2099,42 +2281,38 @@ static int __init stmmac_cmdline_opt(char *str) return -EINVAL; while ((opt = strsep(&str, ",")) != NULL) { if (!strncmp(opt, "debug:", 6)) { - if (strict_strtoul(opt + 6, 0, (unsigned long *)&debug)) + if (kstrtoint(opt + 6, 0, &debug)) goto err; } else if (!strncmp(opt, "phyaddr:", 8)) { - if (strict_strtoul(opt + 8, 0, - (unsigned long *)&phyaddr)) + if (kstrtoint(opt + 8, 0, &phyaddr)) goto err; } else if (!strncmp(opt, "dma_txsize:", 11)) { - if (strict_strtoul(opt + 11, 0, - (unsigned long *)&dma_txsize)) + if (kstrtoint(opt + 11, 0, &dma_txsize)) goto err; } else if (!strncmp(opt, "dma_rxsize:", 11)) { - if (strict_strtoul(opt + 11, 0, - (unsigned long *)&dma_rxsize)) + if (kstrtoint(opt + 11, 0, &dma_rxsize)) goto err; } else if (!strncmp(opt, "buf_sz:", 7)) { - if (strict_strtoul(opt + 7, 0, - (unsigned long *)&buf_sz)) + if (kstrtoint(opt + 7, 0, &buf_sz)) goto err; } else if (!strncmp(opt, "tc:", 3)) { - if (strict_strtoul(opt + 3, 0, (unsigned long *)&tc)) + if (kstrtoint(opt + 3, 0, &tc)) goto err; } else if (!strncmp(opt, "watchdog:", 9)) { - if (strict_strtoul(opt + 9, 0, - (unsigned long *)&watchdog)) + if (kstrtoint(opt + 9, 0, &watchdog)) goto err; } else if (!strncmp(opt, "flow_ctrl:", 10)) { - if (strict_strtoul(opt + 10, 0, - (unsigned long *)&flow_ctrl)) + if (kstrtoint(opt + 10, 0, &flow_ctrl)) goto err; } else if (!strncmp(opt, "pause:", 6)) { - if (strict_strtoul(opt + 6, 0, (unsigned long *)&pause)) + if (kstrtoint(opt + 6, 0, &pause)) + goto err; + } else if (!strncmp(opt, "eee_timer:", 6)) { + if (kstrtoint(opt + 10, 0, &eee_timer)) goto err; #ifdef CONFIG_STMMAC_TIMER } else if (!strncmp(opt, "tmrate:", 7)) { - if (strict_strtoul(opt + 7, 0, - (unsigned long *)&tmrate)) + if (kstrtoint(opt + 7, 0, &tmrate)) goto err; #endif } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c index 58fab5303e9c..13afb8edfadc 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c @@ -125,7 +125,7 @@ err_out_req_reg_failed: } /** - * stmmac_dvr_remove + * stmmac_pci_remove * * @pdev: platform device pointer * Description: this function calls the main to free the net resources @@ -179,7 +179,7 @@ static DEFINE_PCI_DEVICE_TABLE(stmmac_id_table) = { MODULE_DEVICE_TABLE(pci, stmmac_id_table); -static struct pci_driver stmmac_driver = { +struct pci_driver stmmac_pci_driver = { .name = STMMAC_RESOURCE_NAME, .id_table = stmmac_id_table, .probe = stmmac_pci_probe, @@ -190,33 +190,6 @@ static struct pci_driver stmmac_driver = { #endif }; -/** - * stmmac_init_module - Entry point for the driver - * Description: This function is the entry point for the driver. - */ -static int __init stmmac_init_module(void) -{ - int ret; - - ret = pci_register_driver(&stmmac_driver); - if (ret < 0) - pr_err("%s: ERROR: driver registration failed\n", __func__); - - return ret; -} - -/** - * stmmac_cleanup_module - Cleanup routine for the driver - * Description: This function is the cleanup routine for the driver. - */ -static void __exit stmmac_cleanup_module(void) -{ - pci_unregister_driver(&stmmac_driver); -} - -module_init(stmmac_init_module); -module_exit(stmmac_cleanup_module); - MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver"); MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>"); MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 3dd8f0803808..7d36163d0d23 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -156,6 +156,8 @@ static int stmmac_pltfr_probe(struct platform_device *pdev) if (priv->wol_irq == -ENXIO) priv->wol_irq = priv->dev->irq; + priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi"); + platform_set_drvdata(pdev, priv->dev); pr_debug("STMMAC platform driver registration completed"); @@ -190,7 +192,7 @@ static int stmmac_pltfr_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); - iounmap((void *)priv->ioaddr); + iounmap((void __force __iomem *)priv->ioaddr); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(res->start, resource_size(res)); @@ -255,7 +257,7 @@ static const struct of_device_id stmmac_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, stmmac_dt_ids); -static struct platform_driver stmmac_driver = { +struct platform_driver stmmac_pltfr_driver = { .probe = stmmac_pltfr_probe, .remove = stmmac_pltfr_remove, .driver = { @@ -266,8 +268,6 @@ static struct platform_driver stmmac_driver = { }, }; -module_platform_driver(stmmac_driver); - MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver"); MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); MODULE_LICENSE("GPL"); |