[U-Boot] [PATCH 07/10] net: axi_emac: Move driver to DM
Joe Hershberger
joe.hershberger at gmail.com
Tue Dec 15 21:52:42 CET 2015
Hi Simon,
On Tue, Dec 15, 2015 at 12:57 PM, Simon Glass <sjg at chromium.org> wrote:
> Hi Michal,
>
> On 11 December 2015 at 04:59, Michal Simek <michal.simek at xilinx.com> wrote:
>> Move driver to DM.
>>
>> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
>> ---
>>
>> .../xilinx/microblaze-generic/microblaze-generic.c | 5 -
>> board/xilinx/zynq/board.c | 4 -
>> drivers/net/xilinx_axi_emac.c | 190 +++++++++++++--------
>> include/netdev.h | 2 -
>> 4 files changed, 122 insertions(+), 79 deletions(-)
>
> Reviewed-by: Simon Glass <sjg at chromium.org>
>
> See a few things below.
>
>>
>> diff --git a/board/xilinx/microblaze-generic/microblaze-generic.c b/board/xilinx/microblaze-generic/microblaze-generic.c
>> index dfa629322223..a3122da9acaa 100644
>> --- a/board/xilinx/microblaze-generic/microblaze-generic.c
>> +++ b/board/xilinx/microblaze-generic/microblaze-generic.c
>> @@ -105,11 +105,6 @@ int board_eth_init(bd_t *bis)
>> {
>> int ret = 0;
>>
>> -#ifdef CONFIG_XILINX_AXIEMAC
>> - ret |= xilinx_axiemac_initialize(bis, XILINX_AXIEMAC_BASEADDR,
>> - XILINX_AXIDMA_BASEADDR);
>> -#endif
>> -
>> #if defined(CONFIG_XILINX_EMACLITE) && defined(XILINX_EMACLITE_BASEADDR)
>> u32 txpp = 0;
>> u32 rxpp = 0;
>> diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c
>> index 414f5302a066..427e75485deb 100644
>> --- a/board/xilinx/zynq/board.c
>> +++ b/board/xilinx/zynq/board.c
>> @@ -103,10 +103,6 @@ int board_eth_init(bd_t *bis)
>> {
>> u32 ret = 0;
>>
>> -#ifdef CONFIG_XILINX_AXIEMAC
>> - ret |= xilinx_axiemac_initialize(bis, XILINX_AXIEMAC_BASEADDR,
>> - XILINX_AXIDMA_BASEADDR);
>> -#endif
>> #ifdef CONFIG_XILINX_EMACLITE
>> u32 txpp = 0;
>> u32 rxpp = 0;
>> diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c
>> index 77b1869dc9dc..c03f8f730d3a 100644
>> --- a/drivers/net/xilinx_axi_emac.c
>> +++ b/drivers/net/xilinx_axi_emac.c
>> @@ -8,12 +8,15 @@
>>
>> #include <config.h>
>> #include <common.h>
>> +#include <dm.h>
>> #include <net.h>
>> #include <malloc.h>
>> #include <asm/io.h>
>> #include <phy.h>
>> #include <miiphy.h>
>>
>> +DECLARE_GLOBAL_DATA_PTR;
>> +
>> #if !defined(CONFIG_PHYLIB)
>> # error AXI_ETHERNET requires PHYLIB
>> #endif
>> @@ -87,6 +90,7 @@ struct axidma_priv {
>> struct axidma_reg *dmarx;
>> int phyaddr;
>> struct axi_regs *iobase;
>> + phy_interface_t interface;
>> struct phy_device *phydev;
>> struct mii_dev *bus;
>> };
>> @@ -218,11 +222,11 @@ static u32 phywrite(struct axidma_priv *priv, u32 phyaddress, u32 registernum,
>> }
>>
>> /* Setting axi emac and phy to proper setting */
>> -static int setup_phy(struct eth_device *dev)
>> +static int setup_phy(struct udevice *dev)
>> {
>> u16 phyreg;
>> u32 i, speed, emmc_reg, ret;
>> - struct axidma_priv *priv = dev->priv;
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> struct axi_regs *regs = priv->iobase;
>> struct phy_device *phydev;
>>
>> @@ -298,9 +302,9 @@ static int setup_phy(struct eth_device *dev)
>> }
>>
>> /* STOP DMA transfers */
>> -static void axiemac_halt(struct eth_device *dev)
>> +static void axiemac_halt(struct udevice *dev)
>> {
>> - struct axidma_priv *priv = dev->priv;
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> u32 temp;
>>
>> /* Stop the hardware */
>> @@ -358,16 +362,18 @@ static int axi_ethernet_init(struct axidma_priv *priv)
>> return 0;
>> }
>>
>> -static int axiemac_setup_mac(struct eth_device *dev)
>> +static int axiemac_setup_mac(struct udevice *dev)
>> {
>> - struct axi_regs *regs = (struct axi_regs *)dev->iobase;
>> + struct eth_pdata *pdata = dev_get_platdata(dev);
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> + struct axi_regs *regs = priv->iobase;
>>
>> /* Set the MAC address */
>> - int val = ((dev->enetaddr[3] << 24) | (dev->enetaddr[2] << 16) |
>> - (dev->enetaddr[1] << 8) | (dev->enetaddr[0]));
>> + int val = ((pdata->enetaddr[3] << 24) | (pdata->enetaddr[2] << 16) |
>> + (pdata->enetaddr[1] << 8) | (pdata->enetaddr[0]));
>> out_be32(®s->uaw0, val);
>>
>> - val = (dev->enetaddr[5] << 8) | dev->enetaddr[4] ;
>> + val = (pdata->enetaddr[5] << 8) | pdata->enetaddr[4];
>> val |= in_be32(®s->uaw1) & ~XAE_UAW1_UNICASTADDR_MASK;
>> out_be32(®s->uaw1, val);
>> return 0;
>> @@ -396,10 +402,10 @@ static void axi_dma_init(struct axidma_priv *priv)
>> printf("%s: Timeout\n", __func__);
>> }
>>
>> -static int axiemac_init(struct eth_device *dev, bd_t * bis)
>> +static int axiemac_init(struct udevice *dev)
>> {
>> - struct axidma_priv *priv = dev->priv;
>> - struct axi_regs *regs = (struct axi_regs *)dev->iobase;
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> + struct axi_regs *regs = priv->iobase;
>> u32 temp;
>>
>> debug("axiemac: Init started\n");
>> @@ -458,9 +464,9 @@ static int axiemac_init(struct eth_device *dev, bd_t * bis)
>> return 0;
>> }
>>
>> -static int axiemac_send(struct eth_device *dev, void *ptr, int len)
>> +static int axiemac_send(struct udevice *dev, void *ptr, int len)
>> {
>> - struct axidma_priv *priv = dev->priv;
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> u32 timeout;
>>
>> if (len > PKTSIZE_ALIGN)
>> @@ -530,15 +536,15 @@ static int isrxready(struct axidma_priv *priv)
>> return 0;
>> }
>>
>> -static int axiemac_recv(struct eth_device *dev)
>> +static int axiemac_recv(struct udevice *dev, int flags, uchar **packetp)
>> {
>> u32 length;
>> - struct axidma_priv *priv = dev->priv;
>> + struct axidma_priv *priv = dev_get_priv(dev);
>> u32 temp;
>>
>> /* Wait for an incoming packet */
>> if (!isrxready(priv))
>> - return 0;
>> + return -1;
>
> I suggest -EAGAIN
>
>>
>> debug("axiemac: RX data ready\n");
>>
>> @@ -578,77 +584,125 @@ static int axiemac_recv(struct eth_device *dev)
>>
>> debug("axiemac: RX completed, framelength = %d\n", length);
>>
>> - return length;
>> + return 0;
>
> You do need to return the length here. You could update net.h to make
> this clearer.
I think I figured out what Michal is doing here. What's not clear from
this patch is that he doesn't want net_process_received_packet() to
run on the packet since this function already calls it directly above.
He has a follow-on patch that fixes that and resumes returning the
length from recv().
>> }
>>
>> -static int axiemac_miiphy_read(const char *devname, uchar addr,
>> - uchar reg, ushort *val)
>> +static int axiemac_miiphy_read(struct mii_dev *bus, int addr,
>> + int devad, int reg)
>> {
>> - struct eth_device *dev = eth_get_dev();
>> - u32 ret;
>> + int ret;
>> + u16 value;
>>
>> - ret = phyread(dev->priv, addr, reg, val);
>> - debug("axiemac: Read MII 0x%x, 0x%x, 0x%x\n", addr, reg, *val);
>> - return ret;
>> + ret = phyread(bus->priv, addr, reg, &value);
>> + debug("axiemac: Read MII 0x%x, 0x%x, 0x%x, %d\n", addr, reg,
>> + value, ret);
>> + return value;
>> }
<snip>
More information about the U-Boot
mailing list