diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c | 52 |
1 files changed, 36 insertions, 16 deletions
diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c index 9cae5a309..529172a87 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c @@ -391,7 +391,9 @@ static void umac_reset(struct bcmasp_intf *intf) umac_wl(intf, 0x0, UMC_CMD); umac_wl(intf, UMC_CMD_SW_RESET, UMC_CMD); usleep_range(10, 100); - umac_wl(intf, 0x0, UMC_CMD); + /* We hold the umac in reset and bring it out of + * reset when phy link is up. + */ } static void umac_set_hw_addr(struct bcmasp_intf *intf, @@ -411,6 +413,8 @@ static void umac_enable_set(struct bcmasp_intf *intf, u32 mask, u32 reg; reg = umac_rl(intf, UMC_CMD); + if (reg & UMC_CMD_SW_RESET) + return; if (enable) reg |= mask; else @@ -429,13 +433,10 @@ static void umac_init(struct bcmasp_intf *intf) umac_wl(intf, 0x800, UMC_FRM_LEN); umac_wl(intf, 0xffff, UMC_PAUSE_CNTRL); umac_wl(intf, 0x800, UMC_RX_MAX_PKT_SZ); - umac_enable_set(intf, UMC_CMD_PROMISC, 1); } -static int bcmasp_tx_poll(struct napi_struct *napi, int budget) +static int bcmasp_tx_reclaim(struct bcmasp_intf *intf) { - struct bcmasp_intf *intf = - container_of(napi, struct bcmasp_intf, tx_napi); struct bcmasp_intf_stats64 *stats = &intf->stats64; struct device *kdev = &intf->parent->pdev->dev; unsigned long read, released = 0; @@ -478,10 +479,16 @@ static int bcmasp_tx_poll(struct napi_struct *napi, int budget) DESC_RING_COUNT); } - /* Ensure all descriptors have been written to DRAM for the hardware - * to see updated contents. - */ - wmb(); + return released; +} + +static int bcmasp_tx_poll(struct napi_struct *napi, int budget) +{ + struct bcmasp_intf *intf = + container_of(napi, struct bcmasp_intf, tx_napi); + int released = 0; + + released = bcmasp_tx_reclaim(intf); napi_complete(&intf->tx_napi); @@ -656,6 +663,12 @@ static void bcmasp_adj_link(struct net_device *dev) UMC_CMD_HD_EN | UMC_CMD_RX_PAUSE_IGNORE | UMC_CMD_TX_PAUSE_IGNORE); reg |= cmd_bits; + if (reg & UMC_CMD_SW_RESET) { + reg &= ~UMC_CMD_SW_RESET; + umac_wl(intf, reg, UMC_CMD); + udelay(2); + reg |= UMC_CMD_TX_EN | UMC_CMD_RX_EN | UMC_CMD_PROMISC; + } umac_wl(intf, reg, UMC_CMD); intf->eee.eee_active = phy_init_eee(phydev, 0) >= 0; @@ -684,6 +697,8 @@ static int bcmasp_init_rx(struct bcmasp_intf *intf) intf->rx_buf_order = get_order(RING_BUFFER_SIZE); buffer_pg = alloc_pages(GFP_KERNEL, intf->rx_buf_order); + if (!buffer_pg) + return -ENOMEM; dma = dma_map_page(kdev, buffer_pg, 0, RING_BUFFER_SIZE, DMA_FROM_DEVICE); @@ -785,6 +800,7 @@ static int bcmasp_init_tx(struct bcmasp_intf *intf) intf->tx_spb_index = 0; intf->tx_spb_clean_index = 0; + memset(intf->tx_cbs, 0, sizeof(struct bcmasp_tx_cb) * DESC_RING_COUNT); netif_napi_add_tx(intf->ndev, &intf->tx_napi, bcmasp_tx_poll); @@ -895,6 +911,8 @@ static void bcmasp_netif_deinit(struct net_device *dev) } while (timeout-- > 0); tx_spb_dma_wl(intf, 0x0, TX_SPB_DMA_FIFO_CTRL); + bcmasp_tx_reclaim(intf); + umac_enable_set(intf, UMC_CMD_TX_EN, 0); phy_stop(dev->phydev); @@ -1061,9 +1079,6 @@ static int bcmasp_netif_init(struct net_device *dev, bool phy_connect) umac_init(intf); - /* Disable the UniMAC RX/TX */ - umac_enable_set(intf, (UMC_CMD_RX_EN | UMC_CMD_TX_EN), 0); - umac_set_hw_addr(intf, dev->dev_addr); intf->old_duplex = -1; @@ -1083,9 +1098,6 @@ static int bcmasp_netif_init(struct net_device *dev, bool phy_connect) bcmasp_enable_rx(intf, 1); - /* Turn on UniMAC TX/RX */ - umac_enable_set(intf, (UMC_CMD_RX_EN | UMC_CMD_TX_EN), 1); - intf->crc_fwd = !!(umac_rl(intf, UMC_CMD) & UMC_CMD_CRC_FWD); bcmasp_netif_start(dev); @@ -1095,6 +1107,7 @@ static int bcmasp_netif_init(struct net_device *dev, bool phy_connect) return 0; err_reclaim_tx: + netif_napi_del(&intf->tx_napi); bcmasp_reclaim_free_all_tx(intf); err_phy_disconnect: if (phydev) @@ -1321,7 +1334,14 @@ static void bcmasp_suspend_to_wol(struct bcmasp_intf *intf) if (intf->wolopts & WAKE_FILTER) bcmasp_netfilt_suspend(intf); - /* UniMAC receive needs to be turned on */ + /* Bring UniMAC out of reset if needed and enable RX */ + reg = umac_rl(intf, UMC_CMD); + if (reg & UMC_CMD_SW_RESET) + reg &= ~UMC_CMD_SW_RESET; + + reg |= UMC_CMD_RX_EN | UMC_CMD_PROMISC; + umac_wl(intf, reg, UMC_CMD); + umac_enable_set(intf, UMC_CMD_RX_EN, 1); if (intf->parent->wol_irq > 0) { |