diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index f92896835d2a4ceb18e7d69fdc53ce7730402667..69015fa50f2096c77999539179446e5ab38fa759 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -1,7 +1,7 @@ /* * Broadcom GENET (Gigabit Ethernet) controller driver * - * Copyright (c) 2014 Broadcom Corporation + * Copyright (c) 2014-2017 Broadcom * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -450,6 +450,22 @@ static inline void bcmgenet_rdma_ring_writel(struct bcmgenet_priv *priv, genet_dma_ring_regs[r]); } +static int bcmgenet_begin(struct net_device *dev) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + + /* Turn on the clock */ + return clk_prepare_enable(priv->clk); +} + +static void bcmgenet_complete(struct net_device *dev) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + + /* Turn off the clock */ + clk_disable_unprepare(priv->clk); +} + static int bcmgenet_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { @@ -778,8 +794,9 @@ static const struct bcmgenet_stats bcmgenet_gstrings_stats[] = { STAT_GENET_RUNT("rx_runt_bytes", mib.rx_runt_bytes), /* Misc UniMAC counters */ STAT_GENET_MISC("rbuf_ovflow_cnt", mib.rbuf_ovflow_cnt, - UMAC_RBUF_OVFL_CNT), - STAT_GENET_MISC("rbuf_err_cnt", mib.rbuf_err_cnt, UMAC_RBUF_ERR_CNT), + UMAC_RBUF_OVFL_CNT_V1), + STAT_GENET_MISC("rbuf_err_cnt", mib.rbuf_err_cnt, + UMAC_RBUF_ERR_CNT_V1), STAT_GENET_MISC("mdf_err_cnt", mib.mdf_err_cnt, UMAC_MDF_ERR_CNT), STAT_GENET_SOFT_MIB("alloc_rx_buff_failed", mib.alloc_rx_buff_failed), STAT_GENET_SOFT_MIB("rx_dma_failed", mib.rx_dma_failed), @@ -821,6 +838,45 @@ static void bcmgenet_get_strings(struct net_device *dev, u32 stringset, } } +static u32 bcmgenet_update_stat_misc(struct bcmgenet_priv *priv, u16 offset) +{ + u16 new_offset; + u32 val; + + switch (offset) { + case UMAC_RBUF_OVFL_CNT_V1: + if (GENET_IS_V2(priv)) + new_offset = RBUF_OVFL_CNT_V2; + else + new_offset = RBUF_OVFL_CNT_V3PLUS; + + val = bcmgenet_rbuf_readl(priv, new_offset); + /* clear if overflowed */ + if (val == ~0) + bcmgenet_rbuf_writel(priv, 0, new_offset); + break; + case UMAC_RBUF_ERR_CNT_V1: + if (GENET_IS_V2(priv)) + new_offset = RBUF_ERR_CNT_V2; + else + new_offset = RBUF_ERR_CNT_V3PLUS; + + val = bcmgenet_rbuf_readl(priv, new_offset); + /* clear if overflowed */ + if (val == ~0) + bcmgenet_rbuf_writel(priv, 0, new_offset); + break; + default: + val = bcmgenet_umac_readl(priv, offset); + /* clear if overflowed */ + if (val == ~0) + bcmgenet_umac_writel(priv, 0, offset); + break; + } + + return val; +} + static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv) { int i, j = 0; @@ -836,19 +892,28 @@ static void bcmgenet_update_mib_counters(struct bcmgenet_priv *priv) case BCMGENET_STAT_NETDEV: case BCMGENET_STAT_SOFT: continue; - case BCMGENET_STAT_MIB_RX: - case BCMGENET_STAT_MIB_TX: case BCMGENET_STAT_RUNT: - if (s->type != BCMGENET_STAT_MIB_RX) - offset = BCMGENET_STAT_OFFSET; + offset += BCMGENET_STAT_OFFSET; + /* fall through */ + case BCMGENET_STAT_MIB_TX: + offset += BCMGENET_STAT_OFFSET; + /* fall through */ + case BCMGENET_STAT_MIB_RX: val = bcmgenet_umac_readl(priv, UMAC_MIB_START + j + offset); + offset = 0; /* Reset Offset */ break; case BCMGENET_STAT_MISC: - val = bcmgenet_umac_readl(priv, s->reg_offset); - /* clear if overflowed */ - if (val == ~0) - bcmgenet_umac_writel(priv, 0, s->reg_offset); + if (GENET_IS_V1(priv)) { + val = bcmgenet_umac_readl(priv, s->reg_offset); + /* clear if overflowed */ + if (val == ~0) + bcmgenet_umac_writel(priv, 0, + s->reg_offset); + } else { + val = bcmgenet_update_stat_misc(priv, + s->reg_offset); + } break; } @@ -973,6 +1038,8 @@ static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e) /* standard ethtool support functions. */ static const struct ethtool_ops bcmgenet_ethtool_ops = { + .begin = bcmgenet_begin, + .complete = bcmgenet_complete, .get_strings = bcmgenet_get_strings, .get_sset_count = bcmgenet_get_sset_count, .get_ethtool_stats = bcmgenet_get_ethtool_stats, @@ -1167,7 +1234,6 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev, struct bcmgenet_priv *priv = netdev_priv(dev); struct device *kdev = &priv->pdev->dev; struct enet_cb *tx_cb_ptr; - struct netdev_queue *txq; unsigned int pkts_compl = 0; unsigned int bytes_compl = 0; unsigned int c_index; @@ -1219,13 +1285,8 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev, dev->stats.tx_packets += pkts_compl; dev->stats.tx_bytes += bytes_compl; - txq = netdev_get_tx_queue(dev, ring->queue); - netdev_tx_completed_queue(txq, pkts_compl, bytes_compl); - - if (ring->free_bds > (MAX_SKB_FRAGS + 1)) { - if (netif_tx_queue_stopped(txq)) - netif_tx_wake_queue(txq); - } + netdev_tx_completed_queue(netdev_get_tx_queue(dev, ring->queue), + pkts_compl, bytes_compl); return pkts_compl; } @@ -1248,8 +1309,16 @@ static int bcmgenet_tx_poll(struct napi_struct *napi, int budget) struct bcmgenet_tx_ring *ring = container_of(napi, struct bcmgenet_tx_ring, napi); unsigned int work_done = 0; + struct netdev_queue *txq; + unsigned long flags; - work_done = bcmgenet_tx_reclaim(ring->priv->dev, ring); + spin_lock_irqsave(&ring->lock, flags); + work_done = __bcmgenet_tx_reclaim(ring->priv->dev, ring); + if (ring->free_bds > (MAX_SKB_FRAGS + 1)) { + txq = netdev_get_tx_queue(ring->priv->dev, ring->queue); + netif_tx_wake_queue(txq); + } + spin_unlock_irqrestore(&ring->lock, flags); if (work_done == 0) { napi_complete(napi); @@ -2457,24 +2526,28 @@ static int bcmgenet_init_dma(struct bcmgenet_priv *priv) /* Interrupt bottom half */ static void bcmgenet_irq_task(struct work_struct *work) { + unsigned long flags; + unsigned int status; struct bcmgenet_priv *priv = container_of( work, struct bcmgenet_priv, bcmgenet_irq_work); netif_dbg(priv, intr, priv->dev, "%s\n", __func__); - if (priv->irq0_stat & UMAC_IRQ_MPD_R) { - priv->irq0_stat &= ~UMAC_IRQ_MPD_R; + spin_lock_irqsave(&priv->lock, flags); + status = priv->irq0_stat; + priv->irq0_stat = 0; + spin_unlock_irqrestore(&priv->lock, flags); + + if (status & UMAC_IRQ_MPD_R) { netif_dbg(priv, wol, priv->dev, "magic packet detected, waking up\n"); bcmgenet_power_up(priv, GENET_POWER_WOL_MAGIC); } /* Link UP/DOWN event */ - if (priv->irq0_stat & UMAC_IRQ_LINK_EVENT) { + if (status & UMAC_IRQ_LINK_EVENT) phy_mac_interrupt(priv->phydev, - !!(priv->irq0_stat & UMAC_IRQ_LINK_UP)); - priv->irq0_stat &= ~UMAC_IRQ_LINK_EVENT; - } + !!(status & UMAC_IRQ_LINK_UP)); } /* bcmgenet_isr1: handle Rx and Tx priority queues */ @@ -2483,22 +2556,21 @@ static irqreturn_t bcmgenet_isr1(int irq, void *dev_id) struct bcmgenet_priv *priv = dev_id; struct bcmgenet_rx_ring *rx_ring; struct bcmgenet_tx_ring *tx_ring; - unsigned int index; + unsigned int index, status; - /* Save irq status for bottom-half processing. */ - priv->irq1_stat = - bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_STAT) & + /* Read irq status */ + status = bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_STAT) & ~bcmgenet_intrl2_1_readl(priv, INTRL2_CPU_MASK_STATUS); /* clear interrupts */ - bcmgenet_intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR); + bcmgenet_intrl2_1_writel(priv, status, INTRL2_CPU_CLEAR); netif_dbg(priv, intr, priv->dev, - "%s: IRQ=0x%x\n", __func__, priv->irq1_stat); + "%s: IRQ=0x%x\n", __func__, status); /* Check Rx priority queue interrupts */ for (index = 0; index < priv->hw_params->rx_queues; index++) { - if (!(priv->irq1_stat & BIT(UMAC_IRQ1_RX_INTR_SHIFT + index))) + if (!(status & BIT(UMAC_IRQ1_RX_INTR_SHIFT + index))) continue; rx_ring = &priv->rx_rings[index]; @@ -2511,7 +2583,7 @@ static irqreturn_t bcmgenet_isr1(int irq, void *dev_id) /* Check Tx priority queue interrupts */ for (index = 0; index < priv->hw_params->tx_queues; index++) { - if (!(priv->irq1_stat & BIT(index))) + if (!(status & BIT(index))) continue; tx_ring = &priv->tx_rings[index]; @@ -2531,19 +2603,20 @@ static irqreturn_t bcmgenet_isr0(int irq, void *dev_id) struct bcmgenet_priv *priv = dev_id; struct bcmgenet_rx_ring *rx_ring; struct bcmgenet_tx_ring *tx_ring; + unsigned int status; + unsigned long flags; - /* Save irq status for bottom-half processing. */ - priv->irq0_stat = - bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_STAT) & + /* Read irq status */ + status = bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_STAT) & ~bcmgenet_intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS); /* clear interrupts */ - bcmgenet_intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR); + bcmgenet_intrl2_0_writel(priv, status, INTRL2_CPU_CLEAR); netif_dbg(priv, intr, priv->dev, - "IRQ=0x%x\n", priv->irq0_stat); + "IRQ=0x%x\n", status); - if (priv->irq0_stat & UMAC_IRQ_RXDMA_DONE) { + if (status & UMAC_IRQ_RXDMA_DONE) { rx_ring = &priv->rx_rings[DESC_INDEX]; if (likely(napi_schedule_prep(&rx_ring->napi))) { @@ -2552,7 +2625,7 @@ static irqreturn_t bcmgenet_isr0(int irq, void *dev_id) } } - if (priv->irq0_stat & UMAC_IRQ_TXDMA_DONE) { + if (status & UMAC_IRQ_TXDMA_DONE) { tx_ring = &priv->tx_rings[DESC_INDEX]; if (likely(napi_schedule_prep(&tx_ring->napi))) { @@ -2561,22 +2634,23 @@ static irqreturn_t bcmgenet_isr0(int irq, void *dev_id) } } - if (priv->irq0_stat & (UMAC_IRQ_PHY_DET_R | - UMAC_IRQ_PHY_DET_F | - UMAC_IRQ_LINK_EVENT | - UMAC_IRQ_HFB_SM | - UMAC_IRQ_HFB_MM | - UMAC_IRQ_MPD_R)) { - /* all other interested interrupts handled in bottom half */ - schedule_work(&priv->bcmgenet_irq_work); - } - if ((priv->hw_params->flags & GENET_HAS_MDIO_INTR) && - priv->irq0_stat & (UMAC_IRQ_MDIO_DONE | UMAC_IRQ_MDIO_ERROR)) { - priv->irq0_stat &= ~(UMAC_IRQ_MDIO_DONE | UMAC_IRQ_MDIO_ERROR); + status & (UMAC_IRQ_MDIO_DONE | UMAC_IRQ_MDIO_ERROR)) { wake_up(&priv->wq); } + /* all other interested interrupts handled in bottom half */ + status &= (UMAC_IRQ_LINK_EVENT | + UMAC_IRQ_MPD_R); + if (status) { + /* Save irq status for bottom-half processing. */ + spin_lock_irqsave(&priv->lock, flags); + priv->irq0_stat |= status; + spin_unlock_irqrestore(&priv->lock, flags); + + schedule_work(&priv->bcmgenet_irq_work); + } + return IRQ_HANDLED; } @@ -2801,6 +2875,8 @@ static int bcmgenet_open(struct net_device *dev) err_fini_dma: bcmgenet_fini_dma(priv); err_clk_disable: + if (priv->internal_phy) + bcmgenet_power_down(priv, GENET_POWER_PASSIVE); clk_disable_unprepare(priv->clk); return ret; } @@ -3177,6 +3253,12 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv) */ gphy_rev = reg & 0xffff; + /* This is reserved so should require special treatment */ + if (gphy_rev == 0 || gphy_rev == 0x01ff) { + pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev); + return; + } + /* This is the good old scheme, just GPHY major, no minor nor patch */ if ((gphy_rev & 0xf0) != 0) priv->gphy_rev = gphy_rev << 8; @@ -3185,12 +3267,6 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv) else if ((gphy_rev & 0xff00) != 0) priv->gphy_rev = gphy_rev; - /* This is reserved so should require special treatment */ - else if (gphy_rev == 0 || gphy_rev == 0x01ff) { - pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev); - return; - } - #ifdef CONFIG_PHYS_ADDR_T_64BIT if (!(params->flags & GENET_HAS_40BITS)) pr_warn("GENET does not support 40-bits PA\n"); @@ -3233,6 +3309,7 @@ static int bcmgenet_probe(struct platform_device *pdev) const void *macaddr; struct resource *r; int err = -EIO; + const char *phy_mode_str; /* Up to GENET_MAX_MQ_CNT + 1 TX queues and RX queues */ dev = alloc_etherdev_mqs(sizeof(*priv), GENET_MAX_MQ_CNT + 1, @@ -3276,6 +3353,8 @@ static int bcmgenet_probe(struct platform_device *pdev) goto err; } + spin_lock_init(&priv->lock); + SET_NETDEV_DEV(dev, &pdev->dev); dev_set_drvdata(&pdev->dev, dev); ether_addr_copy(dev->dev_addr, macaddr); @@ -3338,6 +3417,13 @@ static int bcmgenet_probe(struct platform_device *pdev) priv->clk_eee = NULL; } + /* If this is an internal GPHY, power it on now, before UniMAC is + * brought out of reset as absolutely no UniMAC activity is allowed + */ + if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) && + !strcasecmp(phy_mode_str, "internal")) + bcmgenet_power_up(priv, GENET_POWER_PASSIVE); + err = reset_umac(priv); if (err) goto err_clk_disable; @@ -3502,6 +3588,8 @@ static int bcmgenet_resume(struct device *d) return 0; out_clk_disable: + if (priv->internal_phy) + bcmgenet_power_down(priv, GENET_POWER_PASSIVE); clk_disable_unprepare(priv->clk); return ret; } diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index 1e2dc34d331a49e05a8fc9a66156dfeeb00ee10f..db7f289d65ae2abd1589446ee0cadc00ffbf0254 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014 Broadcom Corporation + * Copyright (c) 2014-2017 Broadcom * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -214,7 +214,9 @@ struct bcmgenet_mib_counters { #define MDIO_REG_SHIFT 16 #define MDIO_REG_MASK 0x1F -#define UMAC_RBUF_OVFL_CNT 0x61C +#define UMAC_RBUF_OVFL_CNT_V1 0x61C +#define RBUF_OVFL_CNT_V2 0x80 +#define RBUF_OVFL_CNT_V3PLUS 0x94 #define UMAC_MPD_CTRL 0x620 #define MPD_EN (1 << 0) @@ -224,7 +226,9 @@ struct bcmgenet_mib_counters { #define UMAC_MPD_PW_MS 0x624 #define UMAC_MPD_PW_LS 0x628 -#define UMAC_RBUF_ERR_CNT 0x634 +#define UMAC_RBUF_ERR_CNT_V1 0x634 +#define RBUF_ERR_CNT_V2 0x84 +#define RBUF_ERR_CNT_V3PLUS 0x98 #define UMAC_MDF_ERR_CNT 0x638 #define UMAC_MDF_CTRL 0x650 #define UMAC_MDF_ADDR 0x654 @@ -619,11 +623,13 @@ struct bcmgenet_priv { struct work_struct bcmgenet_irq_work; int irq0; int irq1; - unsigned int irq0_stat; - unsigned int irq1_stat; int wol_irq; bool wol_irq_disabled; + /* shared status */ + spinlock_t lock; + unsigned int irq0_stat; + /* HW descriptors/checksum variables */ bool desc_64b_en; bool desc_rxchk_en;