[U-Boot] [PATCH 03/11] arm: ks8695eth: Use MAC address from environment

[Albert ARIBAUD <albert.u.boot@aribaud.net>]

Hi Yann,

On Fri, 19 Oct 2012 10:02:09 +0200, Yann Vernier
<yann.vernier@orsoc.se> wrote:

> On Thu, 18 Oct 2012 15:55:31 -0500
> Joe Hershberger <joe.hershberger@gmail.com> wrote:
> 
> > Hi Yann,
> > 
> > On Fri, Oct 5, 2012 at 7:09 AM, Yann Vernier <yann.vernier@orsoc.se>
> > wrote:
> > > Removed board specific MAC reading code from driver.
> > > Should move the reading to the cm4008/cm41xx board code.
> > > ---
> > >  drivers/net/ks8695eth.c |   38
> > > +++++++++----------------------------- 1 file changed, 9
> > > insertions(+), 29 deletions(-)
> > >
> > > diff --git a/drivers/net/ks8695eth.c b/drivers/net/ks8695eth.c
> > > index b4904b6..2dda7ab 100644
> > > --- a/drivers/net/ks8695eth.c
> > > +++ b/drivers/net/ks8695eth.c
> > > @@ -71,30 +71,13 @@ volatile uint8_t
> > > ks8695_bufs[BUFSIZE*(TXDESCS+RXDESCS)] __attribute__((aligned(2
> > >
> > >  /****************************************************************************/
> > >
> > > -/*
> > > - *     Ideally we want to use the MAC address stored in flash.
> > > - *     But we do some sanity checks in case they are not present
> > > - *     first.
> > > - */
> > > -unsigned char eth_mac[] = {
> > > -       0x00, 0x13, 0xc6, 0x00, 0x00, 0x00
> > > -};
> > > -
> > > -void ks8695_getmac(void)
> > > +static int ks8695_set_mac_address(struct eth_device *dev)
> > >  {
> > > -       unsigned char *fp;
> > > -       int i;
> > > -
> > > -       /* Check if flash MAC is valid */
> > > -       fp = (unsigned char *) 0x0201c000;
> > > -       for (i = 0; (i < 6); i++) {
> > > -               if ((fp[i] != 0) && (fp[i] != 0xff))
> > > -                       break;
> > > -       }
> > > -
> > > -       /* If we found a valid looking MAC address then use it */
> > > -       if (i < 6)
> > > -               memcpy(&eth_mac[0], fp, 6);
> > > +       /* Set MAC address */
> > > +       ks8695_write(KS8695_LAN_MAC_LOW, (dev->enetaddr[5] |
> > > (dev->enetaddr[4] << 8) |
> > > +               (dev->enetaddr[3] << 16) | (dev->enetaddr[2] <<
> > > 24)));
> > > +       ks8695_write(KS8695_LAN_MAC_HIGH, (dev->enetaddr[1] |
> > > (dev->enetaddr[0] << 8)));
> > > +       return 0;
> > >  }
> > >
> > >  /****************************************************************************/
> > > @@ -109,12 +92,8 @@ static int ks8695_eth_init(struct eth_device
> > > *dev, bd_t *bd) ks8695_write(KS8695_LAN_DMA_TX, 0x80000000);
> > >         ks8695_write(KS8695_LAN_DMA_RX, 0x80000000);
> > >
> > > -       ks8695_getmac();
> > > -
> > >         /* Set MAC address */
> > > -       ks8695_write(KS8695_LAN_MAC_LOW, (eth_mac[5] | (eth_mac[4]
> > > << 8) |
> > > -               (eth_mac[3] << 16) | (eth_mac[2] << 24)));
> > > -       ks8695_write(KS8695_LAN_MAC_HIGH, (eth_mac[1] | (eth_mac[0]
> > > << 8)));
> > > +       ks8695_set_mac_address(dev);
> > 
> > Why do you set the MAC address here?  It should be set for you by the
> > network infrastructure without this call.
> 
> Simply because I was not aware of this at the time. Before the changes
> here the generic infrastructure could not do it, as write_hwaddr was
> unimplemented, and I was just trying to preserve function. The main
> reason I started poking at the network driver was that it loaded the
> MAC from a hardcoded address in ROM, obviously board specific (this is
> the magic number in [PATCH 11/11] arm: cm4008, cm41xx: read MAC address
> from flash). It also has a bug where it stops working after one command
> (i.e. can't tftp twice), which I have not tracked down as yet. 
> 
> > >         /* Turn the 4 port switch on */
> > >         i = ks8695_read(KS8695_SWITCH_CTRL0);
> > > @@ -150,7 +129,7 @@ static int ks8695_eth_init(struct eth_device
> > > *dev, bd_t *bd) ks8695_write(KS8695_LAN_DMA_RX, 0x71);
> > >         ks8695_write(KS8695_LAN_DMA_RX_START, 0x1);
> > >
> > > -       printf("KS8695 ETHERNET: %pM\n", eth_mac);
> > > +       printf("KS8695 ETHERNET: %pM\n", dev->enetaddr);
> > >         return 0;
> > >  }
> > >
> > > @@ -234,6 +213,7 @@ int ks8695_eth_initialize(void)
> > >         dev->halt = ks8695_eth_halt;
> > >         dev->send = ks8695_eth_send;
> > >         dev->recv = ks8695_eth_recv;
> > > +       dev->write_hwaddr = ks8695_set_mac_address;
> > >         strcpy(dev->name, "ks8695eth");
> > >
> > >         eth_register(dev);
> > > --
> > > 1.7.10.4
> > 
> > -Joe

What is the status for this patch? Are you going to drop it or submit a
new version?

Amicalement,
-- 
Albert.