diff options
| author | Vipul Kumar <vipul.kumar@xilinx.com> | 2018-01-23 12:22:35 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-04-09 13:14:50 +0300 |
| commit | 047f3bf8282f87a8cad2fc5b1fef569895cbd2dd (patch) | |
| tree | df2b89cf393bb397dc993a1b4cb90354c958792e /drivers/net/xilinx_axi_emac.c | |
| parent | 6fbbe2d8f671920948a0b1882c6884cfdd0cbe67 (diff) | |
| download | u-boot-047f3bf8282f87a8cad2fc5b1fef569895cbd2dd.tar.xz | |
axi: ethernet: Added support for 64 bit addressing for axi-ethernet
This patch uses writeq() function to enable greater than 32 bit
addressing of axi-ethernet for the ZynqMP devices.
Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers/net/xilinx_axi_emac.c')
| -rw-r--r-- | drivers/net/xilinx_axi_emac.c | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c index 70a2e95a8e..80ed06ac66 100644 --- a/drivers/net/xilinx_axi_emac.c +++ b/drivers/net/xilinx_axi_emac.c @@ -78,9 +78,10 @@ static u8 rxframe[PKTSIZE_ALIGN] __attribute((aligned(DMAALIGN))); struct axidma_reg { u32 control; /* DMACR */ u32 status; /* DMASR */ - u32 current; /* CURDESC */ - u32 reserved; - u32 tail; /* TAILDESC */ + u32 current; /* CURDESC low 32 bit */ + u32 current_hi; /* CURDESC high 32 bit */ + u32 tail; /* TAILDESC low 32 bit */ + u32 tail_hi; /* TAILDESC high 32 bit */ }; /* Private driver structures */ @@ -168,6 +169,22 @@ static inline int mdio_wait(struct axi_regs *regs) return 0; } +/** + * axienet_dma_write - Memory mapped Axi DMA register Buffer Descriptor write. + * @bd: pointer to BD descriptor structure + * @desc: Address offset of DMA descriptors + * + * This function writes the value into the corresponding Axi DMA register. + */ +static inline void axienet_dma_write(struct axidma_bd *bd, u32 *desc) +{ +#if defined(CONFIG_PHYS_64BIT) + writeq(bd, desc); +#else + writel((u32)bd, desc); +#endif +} + static u32 phyread(struct axidma_priv *priv, u32 phyaddress, u32 registernum, u16 *val) { @@ -465,7 +482,7 @@ static int axiemac_start(struct udevice *dev) writel(temp, &priv->dmarx->control); /* Start DMA RX channel. Now it's ready to receive data.*/ - writel((u32)&rx_bd, &priv->dmarx->current); + axienet_dma_write(&rx_bd, &priv->dmarx->current); /* Setup the BD. */ memset(&rx_bd, 0, sizeof(rx_bd)); @@ -485,7 +502,7 @@ static int axiemac_start(struct udevice *dev) writel(temp, &priv->dmarx->control); /* Rx BD is ready - start */ - writel((u32)&rx_bd, &priv->dmarx->tail); + axienet_dma_write(&rx_bd, &priv->dmarx->tail); /* Enable TX */ writel(XAE_TC_TX_MASK, ®s->tc); @@ -527,7 +544,7 @@ static int axiemac_send(struct udevice *dev, void *ptr, int len) if (readl(&priv->dmatx->status) & XAXIDMA_HALTED_MASK) { u32 temp; - writel((u32)&tx_bd, &priv->dmatx->current); + axienet_dma_write(&tx_bd, &priv->dmatx->current); /* Start the hardware */ temp = readl(&priv->dmatx->control); temp |= XAXIDMA_CR_RUNSTOP_MASK; @@ -535,7 +552,7 @@ static int axiemac_send(struct udevice *dev, void *ptr, int len) } /* Start transfer */ - writel((u32)&tx_bd, &priv->dmatx->tail); + axienet_dma_write(&tx_bd, &priv->dmatx->tail); /* Wait for transmission to complete */ debug("axiemac: Waiting for tx to be done\n"); @@ -626,7 +643,7 @@ static int axiemac_free_pkt(struct udevice *dev, uchar *packet, int length) flush_cache((u32)&rxframe, sizeof(rxframe)); /* Rx BD is ready - start again */ - writel((u32)&rx_bd, &priv->dmarx->tail); + axienet_dma_write(&rx_bd, &priv->dmarx->tail); debug("axiemac: RX completed, framelength = %d\n", length); |