dl2k: Clean up rio_ioctl

The dl2k driver's rio_ioctl call has a few issues:
- No permissions checking
- Implements SIOCGMIIREG and SIOCGMIIREG using the SIOCDEVPRIVATE numbers
- Has a few ioctls that may have been used for debugging at one point
  but have no place in the kernel proper.

This patch removes all but the MII ioctls, renumbers them to use the
standard ones, and adds the proper permission check for SIOCSMIIREG.

We can also get rid of the dl2k-specific struct mii_data in favor of
the generic struct mii_ioctl_data.

Since we have the phyid on hand, we can add the SIOCGMIIPHY ioctl too.

Most of the MII code for the driver could probably be converted to use
the generic MII library but I don't have a device to test the results.

Reported-by: Stephan Mueller <stephan.mueller@atsec.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rio_open (struct net_device *dev)
{
	struct netdev_private *np = netdev_priv(dev);
	long ioaddr = dev->base_addr;
	int i;
	u16 macctrl;

	i = request_irq (dev->irq, rio_interrupt, IRQF_SHARED, dev->name, dev);
	if (i)
		return i;

	/* Reset all logic functions */
	writew (GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset,
		ioaddr + ASICCtrl + 2);
	mdelay(10);

	/* DebugCtrl bit 4, 5, 9 must set */
	writel (readl (ioaddr + DebugCtrl) | 0x0230, ioaddr + DebugCtrl);

	/* Jumbo frame */
	if (np->jumbo != 0)
		writew (MAX_JUMBO+14, ioaddr + MaxFrameSize);

	alloc_list (dev);

	/* Get station address */
	for (i = 0; i < 6; i++)
		writeb (dev->dev_addr[i], ioaddr + StationAddr0 + i);

	set_multicast (dev);
	if (np->coalesce) {
		writel (np->rx_coalesce | np->rx_timeout << 16,
			ioaddr + RxDMAIntCtrl);
	}
	/* Set RIO to poll every N*320nsec. */
	writeb (0x20, ioaddr + RxDMAPollPeriod);
	writeb (0xff, ioaddr + TxDMAPollPeriod);
	writeb (0x30, ioaddr + RxDMABurstThresh);
	writeb (0x30, ioaddr + RxDMAUrgentThresh);
	writel (0x0007ffff, ioaddr + RmonStatMask);
	/* clear statistics */
	clear_stats (dev);

	/* VLAN supported */
	if (np->vlan) {
		/* priority field in RxDMAIntCtrl  */
		writel (readl(ioaddr + RxDMAIntCtrl) | 0x7 << 10,
			ioaddr + RxDMAIntCtrl);
		/* VLANId */
		writew (np->vlan, ioaddr + VLANId);
		/* Length/Type should be 0x8100 */
		writel (0x8100 << 16 | np->vlan, ioaddr + VLANTag);
		/* Enable AutoVLANuntagging, but disable AutoVLANtagging.
		   VLAN information tagged by TFC' VID, CFI fields. */
		writel (readl (ioaddr + MACCtrl) | AutoVLANuntagging,
			ioaddr + MACCtrl);
	}

	init_timer (&np->timer);
	np->timer.expires = jiffies + 1*HZ;
	np->timer.data = (unsigned long) dev;
	np->timer.function = rio_timer;
	add_timer (&np->timer);

	/* Start Tx/Rx */
	writel (readl (ioaddr + MACCtrl) | StatsEnable | RxEnable | TxEnable,
			ioaddr + MACCtrl);

	macctrl = 0;
	macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
	macctrl |= (np->full_duplex) ? DuplexSelect : 0;
	macctrl |= (np->tx_flow) ? TxFlowControlEnable : 0;
	macctrl |= (np->rx_flow) ? RxFlowControlEnable : 0;
	writew(macctrl,	ioaddr + MACCtrl);

	netif_start_queue (dev);

	/* Enable default interrupts */
	EnableInt ();
	return 0;
}

rio_open (struct net_device *dev)
{
	struct netdev_private *np = netdev_priv(dev);
	long ioaddr = dev->base_addr;
	int i;
	u16 macctrl;

	i = request_irq (dev->irq, rio_interrupt, IRQF_SHARED, dev->name, dev);
	if (i)
		return i;

	/* Reset all logic functions */
	writew (GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset,
		ioaddr + ASICCtrl + 2);
	mdelay(10);

	/* DebugCtrl bit 4, 5, 9 must set */
	writel (readl (ioaddr + DebugCtrl) | 0x0230, ioaddr + DebugCtrl);

	/* Jumbo frame */
	if (np->jumbo != 0)
		writew (MAX_JUMBO+14, ioaddr + MaxFrameSize);

	alloc_list (dev);

	/* Get station address */
	for (i = 0; i < 6; i++)
		writeb (dev->dev_addr[i], ioaddr + StationAddr0 + i);

	set_multicast (dev);
	if (np->coalesce) {
		writel (np->rx_coalesce | np->rx_timeout << 16,
			ioaddr + RxDMAIntCtrl);
	}
	/* Set RIO to poll every N*320nsec. */
	writeb (0x20, ioaddr + RxDMAPollPeriod);
	writeb (0xff, ioaddr + TxDMAPollPeriod);
	writeb (0x30, ioaddr + RxDMABurstThresh);
	writeb (0x30, ioaddr + RxDMAUrgentThresh);
	writel (0x0007ffff, ioaddr + RmonStatMask);
	/* clear statistics */
	clear_stats (dev);

	/* VLAN supported */
	if (np->vlan) {
		/* priority field in RxDMAIntCtrl  */
		writel (readl(ioaddr + RxDMAIntCtrl) | 0x7 << 10,
			ioaddr + RxDMAIntCtrl);
		/* VLANId */
		writew (np->vlan, ioaddr + VLANId);
		/* Length/Type should be 0x8100 */
		writel (0x8100 << 16 | np->vlan, ioaddr + VLANTag);
		/* Enable AutoVLANuntagging, but disable AutoVLANtagging.
		   VLAN information tagged by TFC' VID, CFI fields. */
		writel (readl (ioaddr + MACCtrl) | AutoVLANuntagging,
			ioaddr + MACCtrl);
	}

	init_timer (&np->timer);
	np->timer.expires = jiffies + 1*HZ;
	np->timer.data = (unsigned long) dev;
	np->timer.function = rio_timer;
	add_timer (&np->timer);

	/* Start Tx/Rx */
	writel (readl (ioaddr + MACCtrl) | StatsEnable | RxEnable | TxEnable,
			ioaddr + MACCtrl);

	macctrl = 0;
	macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
	macctrl |= (np->full_duplex) ? DuplexSelect : 0;
	macctrl |= (np->tx_flow) ? TxFlowControlEnable : 0;
	macctrl |= (np->rx_flow) ? RxFlowControlEnable : 0;
	writew(macctrl,	ioaddr + MACCtrl);

	netif_start_queue (dev);

	/* Enable default interrupts */
	EnableInt ();
	return 0;
}
