diff options
Diffstat (limited to 'drivers/net/wan/fsl_ucc_hdlc.c')
| -rw-r--r-- | drivers/net/wan/fsl_ucc_hdlc.c | 80 |
1 files changed, 73 insertions, 7 deletions
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index 4d6409605207..a08f04c3f644 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -279,10 +279,9 @@ static int uhdlc_init(struct ucc_hdlc_private *priv) iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr4); /* Get BD buffer */ - bd_buffer = dma_zalloc_coherent(priv->dev, - (RX_BD_RING_LEN + TX_BD_RING_LEN) * - MAX_RX_BUF_LENGTH, - &bd_dma_addr, GFP_KERNEL); + bd_buffer = dma_alloc_coherent(priv->dev, + (RX_BD_RING_LEN + TX_BD_RING_LEN) * MAX_RX_BUF_LENGTH, + &bd_dma_addr, GFP_KERNEL); if (!bd_buffer) { dev_err(priv->dev, "Could not allocate buffer descriptors\n"); @@ -391,6 +390,7 @@ static netdev_tx_t ucc_hdlc_tx(struct sk_buff *skb, struct net_device *dev) dev_kfree_skb(skb); return -ENOMEM; } + netdev_sent_queue(dev, skb->len); spin_lock_irqsave(&priv->lock, flags); /* Start from the next BD that should be filled */ @@ -447,6 +447,8 @@ static int hdlc_tx_done(struct ucc_hdlc_private *priv) { /* Start from the next BD that should be filled */ struct net_device *dev = priv->ndev; + unsigned int bytes_sent = 0; + int howmany = 0; struct qe_bd *bd; /* BD pointer */ u16 bd_status; int tx_restart = 0; @@ -474,11 +476,13 @@ static int hdlc_tx_done(struct ucc_hdlc_private *priv) skb = priv->tx_skbuff[priv->skb_dirtytx]; if (!skb) break; + howmany++; + bytes_sent += skb->len; dev->stats.tx_packets++; memset(priv->tx_buffer + (be32_to_cpu(bd->buf) - priv->dma_tx_addr), 0, skb->len); - dev_kfree_skb_irq(skb); + dev_consume_skb_irq(skb); priv->tx_skbuff[priv->skb_dirtytx] = NULL; priv->skb_dirtytx = @@ -501,6 +505,7 @@ static int hdlc_tx_done(struct ucc_hdlc_private *priv) if (tx_restart) hdlc_tx_restart(priv); + netdev_completed_queue(dev, howmany, bytes_sent); return 0; } @@ -721,6 +726,7 @@ static int uhdlc_open(struct net_device *dev) priv->hdlc_busy = 1; netif_device_attach(priv->ndev); napi_enable(&priv->napi); + netdev_reset_queue(dev); netif_start_queue(dev); hdlc_open(dev); } @@ -812,6 +818,7 @@ static int uhdlc_close(struct net_device *dev) free_irq(priv->ut_info->uf_info.irq, priv); netif_stop_queue(dev); + netdev_reset_queue(dev); priv->hdlc_busy = 0; return 0; @@ -1049,6 +1056,54 @@ static const struct net_device_ops uhdlc_ops = { .ndo_tx_timeout = uhdlc_tx_timeout, }; +static int hdlc_map_iomem(char *name, int init_flag, void __iomem **ptr) +{ + struct device_node *np; + struct platform_device *pdev; + struct resource *res; + static int siram_init_flag; + int ret = 0; + + np = of_find_compatible_node(NULL, NULL, name); + if (!np) + return -EINVAL; + + pdev = of_find_device_by_node(np); + if (!pdev) { + pr_err("%pOFn: failed to lookup pdev\n", np); + of_node_put(np); + return -EINVAL; + } + + of_node_put(np); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + ret = -EINVAL; + goto error_put_device; + } + *ptr = ioremap(res->start, resource_size(res)); + if (!*ptr) { + ret = -ENOMEM; + goto error_put_device; + } + + /* We've remapped the addresses, and we don't need the device any + * more, so we should release it. + */ + put_device(&pdev->dev); + + if (init_flag && siram_init_flag == 0) { + memset_io(*ptr, 0, resource_size(res)); + siram_init_flag = 1; + } + return 0; + +error_put_device: + put_device(&pdev->dev); + + return ret; +} + static int ucc_hdlc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -1143,6 +1198,15 @@ static int ucc_hdlc_probe(struct platform_device *pdev) ret = ucc_of_parse_tdm(np, utdm, ut_info); if (ret) goto free_utdm; + + ret = hdlc_map_iomem("fsl,t1040-qe-si", 0, + (void __iomem **)&utdm->si_regs); + if (ret) + goto free_utdm; + ret = hdlc_map_iomem("fsl,t1040-qe-siram", 1, + (void __iomem **)&utdm->siram); + if (ret) + goto unmap_si_regs; } if (of_property_read_u16(np, "fsl,hmask", &uhdlc_priv->hmask)) @@ -1151,7 +1215,7 @@ static int ucc_hdlc_probe(struct platform_device *pdev) ret = uhdlc_init(uhdlc_priv); if (ret) { dev_err(&pdev->dev, "Failed to init uhdlc\n"); - goto free_utdm; + goto undo_uhdlc_init; } dev = alloc_hdlcdev(uhdlc_priv); @@ -1172,7 +1236,6 @@ static int ucc_hdlc_probe(struct platform_device *pdev) if (register_hdlc_device(dev)) { ret = -ENOBUFS; pr_err("ucc_hdlc: unable to register hdlc device\n"); - free_netdev(dev); goto free_dev; } @@ -1181,6 +1244,9 @@ static int ucc_hdlc_probe(struct platform_device *pdev) free_dev: free_netdev(dev); undo_uhdlc_init: + iounmap(utdm->siram); +unmap_si_regs: + iounmap(utdm->si_regs); free_utdm: if (uhdlc_priv->tsa) kfree(utdm); |