diff options
Diffstat (limited to 'drivers/net/ethernet/xilinx/xilinx_emaclite.c')
| -rw-r--r-- | drivers/net/ethernet/xilinx/xilinx_emaclite.c | 126 |
1 files changed, 69 insertions, 57 deletions
diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c index cf468c87ce57..4cb8b85cbf2c 100644 --- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c +++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c @@ -100,6 +100,14 @@ /* BUFFER_ALIGN(adr) calculates the number of bytes to the next alignment. */ #define BUFFER_ALIGN(adr) ((ALIGNMENT - ((u32) adr)) % ALIGNMENT) +#ifdef __BIG_ENDIAN +#define xemaclite_readl ioread32be +#define xemaclite_writel iowrite32be +#else +#define xemaclite_readl ioread32 +#define xemaclite_writel iowrite32 +#endif + /** * struct net_local - Our private per device data * @ndev: instance of the network device @@ -158,15 +166,15 @@ static void xemaclite_enable_interrupts(struct net_local *drvdata) u32 reg_data; /* Enable the Tx interrupts for the first Buffer */ - reg_data = __raw_readl(drvdata->base_addr + XEL_TSR_OFFSET); - __raw_writel(reg_data | XEL_TSR_XMIT_IE_MASK, - drvdata->base_addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(drvdata->base_addr + XEL_TSR_OFFSET); + xemaclite_writel(reg_data | XEL_TSR_XMIT_IE_MASK, + drvdata->base_addr + XEL_TSR_OFFSET); /* Enable the Rx interrupts for the first buffer */ - __raw_writel(XEL_RSR_RECV_IE_MASK, drvdata->base_addr + XEL_RSR_OFFSET); + xemaclite_writel(XEL_RSR_RECV_IE_MASK, drvdata->base_addr + XEL_RSR_OFFSET); /* Enable the Global Interrupt Enable */ - __raw_writel(XEL_GIER_GIE_MASK, drvdata->base_addr + XEL_GIER_OFFSET); + xemaclite_writel(XEL_GIER_GIE_MASK, drvdata->base_addr + XEL_GIER_OFFSET); } /** @@ -181,17 +189,17 @@ static void xemaclite_disable_interrupts(struct net_local *drvdata) u32 reg_data; /* Disable the Global Interrupt Enable */ - __raw_writel(XEL_GIER_GIE_MASK, drvdata->base_addr + XEL_GIER_OFFSET); + xemaclite_writel(XEL_GIER_GIE_MASK, drvdata->base_addr + XEL_GIER_OFFSET); /* Disable the Tx interrupts for the first buffer */ - reg_data = __raw_readl(drvdata->base_addr + XEL_TSR_OFFSET); - __raw_writel(reg_data & (~XEL_TSR_XMIT_IE_MASK), - drvdata->base_addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(drvdata->base_addr + XEL_TSR_OFFSET); + xemaclite_writel(reg_data & (~XEL_TSR_XMIT_IE_MASK), + drvdata->base_addr + XEL_TSR_OFFSET); /* Disable the Rx interrupts for the first buffer */ - reg_data = __raw_readl(drvdata->base_addr + XEL_RSR_OFFSET); - __raw_writel(reg_data & (~XEL_RSR_RECV_IE_MASK), - drvdata->base_addr + XEL_RSR_OFFSET); + reg_data = xemaclite_readl(drvdata->base_addr + XEL_RSR_OFFSET); + xemaclite_writel(reg_data & (~XEL_RSR_RECV_IE_MASK), + drvdata->base_addr + XEL_RSR_OFFSET); } /** @@ -323,7 +331,7 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data, byte_count = ETH_FRAME_LEN; /* Check if the expected buffer is available */ - reg_data = __raw_readl(addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET); if ((reg_data & (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_XMIT_ACTIVE_MASK)) == 0) { @@ -336,7 +344,7 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data, addr = (void __iomem __force *)((u32 __force)addr ^ XEL_BUFFER_OFFSET); - reg_data = __raw_readl(addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET); if ((reg_data & (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_XMIT_ACTIVE_MASK)) != 0) @@ -347,16 +355,16 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data, /* Write the frame to the buffer */ xemaclite_aligned_write(data, (u32 __force *) addr, byte_count); - __raw_writel((byte_count & XEL_TPLR_LENGTH_MASK), - addr + XEL_TPLR_OFFSET); + xemaclite_writel((byte_count & XEL_TPLR_LENGTH_MASK), + addr + XEL_TPLR_OFFSET); /* Update the Tx Status Register to indicate that there is a * frame to send. Set the XEL_TSR_XMIT_ACTIVE_MASK flag which * is used by the interrupt handler to check whether a frame * has been transmitted */ - reg_data = __raw_readl(addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET); reg_data |= (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_XMIT_ACTIVE_MASK); - __raw_writel(reg_data, addr + XEL_TSR_OFFSET); + xemaclite_writel(reg_data, addr + XEL_TSR_OFFSET); return 0; } @@ -371,7 +379,7 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data, * * Return: Total number of bytes received */ -static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data) +static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen) { void __iomem *addr; u16 length, proto_type; @@ -381,7 +389,7 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data) addr = (drvdata->base_addr + drvdata->next_rx_buf_to_use); /* Verify which buffer has valid data */ - reg_data = __raw_readl(addr + XEL_RSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_RSR_OFFSET); if ((reg_data & XEL_RSR_RECV_DONE_MASK) == XEL_RSR_RECV_DONE_MASK) { if (drvdata->rx_ping_pong != 0) @@ -398,27 +406,28 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data) return 0; /* No data was available */ /* Verify that buffer has valid data */ - reg_data = __raw_readl(addr + XEL_RSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_RSR_OFFSET); if ((reg_data & XEL_RSR_RECV_DONE_MASK) != XEL_RSR_RECV_DONE_MASK) return 0; /* No data was available */ } /* Get the protocol type of the ethernet frame that arrived */ - proto_type = ((ntohl(__raw_readl(addr + XEL_HEADER_OFFSET + + proto_type = ((ntohl(xemaclite_readl(addr + XEL_HEADER_OFFSET + XEL_RXBUFF_OFFSET)) >> XEL_HEADER_SHIFT) & XEL_RPLR_LENGTH_MASK); /* Check if received ethernet frame is a raw ethernet frame * or an IP packet or an ARP packet */ - if (proto_type > (ETH_FRAME_LEN + ETH_FCS_LEN)) { + if (proto_type > ETH_DATA_LEN) { if (proto_type == ETH_P_IP) { - length = ((ntohl(__raw_readl(addr + + length = ((ntohl(xemaclite_readl(addr + XEL_HEADER_IP_LENGTH_OFFSET + XEL_RXBUFF_OFFSET)) >> XEL_HEADER_SHIFT) & XEL_RPLR_LENGTH_MASK); + length = min_t(u16, length, ETH_DATA_LEN); length += ETH_HLEN + ETH_FCS_LEN; } else if (proto_type == ETH_P_ARP) @@ -431,14 +440,17 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data) /* Use the length in the frame, plus the header and trailer */ length = proto_type + ETH_HLEN + ETH_FCS_LEN; + if (WARN_ON(length > maxlen)) + length = maxlen; + /* Read from the EmacLite device */ xemaclite_aligned_read((u32 __force *) (addr + XEL_RXBUFF_OFFSET), data, length); /* Acknowledge the frame */ - reg_data = __raw_readl(addr + XEL_RSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_RSR_OFFSET); reg_data &= ~XEL_RSR_RECV_DONE_MASK; - __raw_writel(reg_data, addr + XEL_RSR_OFFSET); + xemaclite_writel(reg_data, addr + XEL_RSR_OFFSET); return length; } @@ -465,14 +477,14 @@ static void xemaclite_update_address(struct net_local *drvdata, xemaclite_aligned_write(address_ptr, (u32 __force *) addr, ETH_ALEN); - __raw_writel(ETH_ALEN, addr + XEL_TPLR_OFFSET); + xemaclite_writel(ETH_ALEN, addr + XEL_TPLR_OFFSET); /* Update the MAC address in the EmacLite */ - reg_data = __raw_readl(addr + XEL_TSR_OFFSET); - __raw_writel(reg_data | XEL_TSR_PROG_MAC_ADDR, addr + XEL_TSR_OFFSET); + reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET); + xemaclite_writel(reg_data | XEL_TSR_PROG_MAC_ADDR, addr + XEL_TSR_OFFSET); /* Wait for EmacLite to finish with the MAC address update */ - while ((__raw_readl(addr + XEL_TSR_OFFSET) & + while ((xemaclite_readl(addr + XEL_TSR_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0) ; } @@ -605,7 +617,7 @@ static void xemaclite_rx_handler(struct net_device *dev) skb_reserve(skb, 2); - len = xemaclite_recv_data(lp, (u8 *) skb->data); + len = xemaclite_recv_data(lp, (u8 *) skb->data, len); if (!len) { dev->stats.rx_errors++; @@ -642,32 +654,32 @@ static irqreturn_t xemaclite_interrupt(int irq, void *dev_id) u32 tx_status; /* Check if there is Rx Data available */ - if ((__raw_readl(base_addr + XEL_RSR_OFFSET) & + if ((xemaclite_readl(base_addr + XEL_RSR_OFFSET) & XEL_RSR_RECV_DONE_MASK) || - (__raw_readl(base_addr + XEL_BUFFER_OFFSET + XEL_RSR_OFFSET) + (xemaclite_readl(base_addr + XEL_BUFFER_OFFSET + XEL_RSR_OFFSET) & XEL_RSR_RECV_DONE_MASK)) xemaclite_rx_handler(dev); /* Check if the Transmission for the first buffer is completed */ - tx_status = __raw_readl(base_addr + XEL_TSR_OFFSET); + tx_status = xemaclite_readl(base_addr + XEL_TSR_OFFSET); if (((tx_status & XEL_TSR_XMIT_BUSY_MASK) == 0) && (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) { tx_status &= ~XEL_TSR_XMIT_ACTIVE_MASK; - __raw_writel(tx_status, base_addr + XEL_TSR_OFFSET); + xemaclite_writel(tx_status, base_addr + XEL_TSR_OFFSET); tx_complete = true; } /* Check if the Transmission for the second buffer is completed */ - tx_status = __raw_readl(base_addr + XEL_BUFFER_OFFSET + XEL_TSR_OFFSET); + tx_status = xemaclite_readl(base_addr + XEL_BUFFER_OFFSET + XEL_TSR_OFFSET); if (((tx_status & XEL_TSR_XMIT_BUSY_MASK) == 0) && (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) { tx_status &= ~XEL_TSR_XMIT_ACTIVE_MASK; - __raw_writel(tx_status, base_addr + XEL_BUFFER_OFFSET + - XEL_TSR_OFFSET); + xemaclite_writel(tx_status, base_addr + XEL_BUFFER_OFFSET + + XEL_TSR_OFFSET); tx_complete = true; } @@ -700,7 +712,7 @@ static int xemaclite_mdio_wait(struct net_local *lp) /* wait for the MDIO interface to not be busy or timeout after some time. */ - while (__raw_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET) & + while (xemaclite_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET) & XEL_MDIOCTRL_MDIOSTS_MASK) { if (time_before_eq(end, jiffies)) { WARN_ON(1); @@ -736,17 +748,17 @@ static int xemaclite_mdio_read(struct mii_bus *bus, int phy_id, int reg) * MDIO Address register. Set the Status bit in the MDIO Control * register to start a MDIO read transaction. */ - ctrl_reg = __raw_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET); - __raw_writel(XEL_MDIOADDR_OP_MASK | - ((phy_id << XEL_MDIOADDR_PHYADR_SHIFT) | reg), - lp->base_addr + XEL_MDIOADDR_OFFSET); - __raw_writel(ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK, - lp->base_addr + XEL_MDIOCTRL_OFFSET); + ctrl_reg = xemaclite_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET); + xemaclite_writel(XEL_MDIOADDR_OP_MASK | + ((phy_id << XEL_MDIOADDR_PHYADR_SHIFT) | reg), + lp->base_addr + XEL_MDIOADDR_OFFSET); + xemaclite_writel(ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK, + lp->base_addr + XEL_MDIOCTRL_OFFSET); if (xemaclite_mdio_wait(lp)) return -ETIMEDOUT; - rc = __raw_readl(lp->base_addr + XEL_MDIORD_OFFSET); + rc = xemaclite_readl(lp->base_addr + XEL_MDIORD_OFFSET); dev_dbg(&lp->ndev->dev, "xemaclite_mdio_read(phy_id=%i, reg=%x) == %x\n", @@ -783,13 +795,13 @@ static int xemaclite_mdio_write(struct mii_bus *bus, int phy_id, int reg, * Data register. Finally, set the Status bit in the MDIO Control * register to start a MDIO write transaction. */ - ctrl_reg = __raw_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET); - __raw_writel(~XEL_MDIOADDR_OP_MASK & - ((phy_id << XEL_MDIOADDR_PHYADR_SHIFT) | reg), - lp->base_addr + XEL_MDIOADDR_OFFSET); - __raw_writel(val, lp->base_addr + XEL_MDIOWR_OFFSET); - __raw_writel(ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK, - lp->base_addr + XEL_MDIOCTRL_OFFSET); + ctrl_reg = xemaclite_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET); + xemaclite_writel(~XEL_MDIOADDR_OP_MASK & + ((phy_id << XEL_MDIOADDR_PHYADR_SHIFT) | reg), + lp->base_addr + XEL_MDIOADDR_OFFSET); + xemaclite_writel(val, lp->base_addr + XEL_MDIOWR_OFFSET); + xemaclite_writel(ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK, + lp->base_addr + XEL_MDIOCTRL_OFFSET); return 0; } @@ -836,8 +848,8 @@ static int xemaclite_mdio_setup(struct net_local *lp, struct device *dev) /* Enable the MDIO bus by asserting the enable bit in MDIO Control * register. */ - __raw_writel(XEL_MDIOCTRL_MDIOEN_MASK, - lp->base_addr + XEL_MDIOCTRL_OFFSET); + xemaclite_writel(XEL_MDIOCTRL_MDIOEN_MASK, + lp->base_addr + XEL_MDIOCTRL_OFFSET); bus = mdiobus_alloc(); if (!bus) { @@ -1141,8 +1153,8 @@ static int xemaclite_of_probe(struct platform_device *ofdev) dev_warn(dev, "No MAC address found\n"); /* Clear the Tx CSR's in case this is a restart */ - __raw_writel(0, lp->base_addr + XEL_TSR_OFFSET); - __raw_writel(0, lp->base_addr + XEL_BUFFER_OFFSET + XEL_TSR_OFFSET); + xemaclite_writel(0, lp->base_addr + XEL_TSR_OFFSET); + xemaclite_writel(0, lp->base_addr + XEL_BUFFER_OFFSET + XEL_TSR_OFFSET); /* Set the MAC address in the EmacLite device */ xemaclite_update_address(lp, ndev->dev_addr); |