linux/drivers/net/ibm_emac/Kconfig

config IBM_EMAC
	tristate "PowerPC 4xx on-chip Ethernet support"
	depends on 4xx && !PPC_MERGE
	help
	  This driver supports the PowerPC 4xx EMAC family of on-chip
          Ethernet controllers.

config IBM_EMAC_RXB
	int "Number of receive buffers"
	depends on IBM_EMAC
	default "128"

config IBM_EMAC_TXB
	int "Number of transmit buffers"
	depends on IBM_EMAC
	default "64"

config IBM_EMAC_POLL_WEIGHT
	int "MAL NAPI polling weight"
	depends on IBM_EMAC
	default "32"

config IBM_EMAC_RX_COPY_THRESHOLD
	int "RX skb copy threshold (bytes)"
	depends on IBM_EMAC
	default "256"

config IBM_EMAC_RX_SKB_HEADROOM
	int "Additional RX skb headroom (bytes)"
	depends on IBM_EMAC
	default "0"
	help
	  Additional receive skb headroom. Note, that driver
	  will always reserve at least 2 bytes to make IP header
	  aligned, so usually there is no need to add any additional
	  headroom.

	  If unsure, set to 0.

config IBM_EMAC_PHY_RX_CLK_FIX
	bool "PHY Rx clock workaround"
	depends on IBM_EMAC && (405EP || 440GX || 440EP || 440GR)
	help
	  Enable this if EMAC attached to a PHY which doesn't generate
	  RX clock if there is no link, if this is the case, you will
	  see "TX disable timeout" or "RX disable timeout" in the system
	  log.

	  If unsure, say N.

config IBM_EMAC_DEBUG
	bool "Debugging"
	depends on IBM_EMAC
	default n

config IBM_EMAC_ZMII
	bool
	depends on IBM_EMAC && (NP405H || NP405L || 44x)
	default y

config IBM_EMAC_RGMII
	bool
	depends on IBM_EMAC && 440GX
	default y

config IBM_EMAC_TAH
	bool
	depends on IBM_EMAC && 440GX
	default y
Device tree aware EMAC driver Based on BenH's earlier work, this is a new version of the EMAC driver for the built-in ethernet found on PowerPC 4xx embedded CPUs. The same ASIC is also found in the Axon bridge chip. This new version is designed to work in the arch/powerpc tree, using the device tree to probe the device, rather than the old and ugly arch/ppc OCP layer. This driver is designed to sit alongside the old driver (that lies in drivers/net/ibm_emac and this one in drivers/net/ibm_newemac). The old driver is left in place to support arch/ppc until arch/ppc itself reaches its final demise (not too long now, with luck). This driver still has a number of things that could do with cleaning up, but I think they can be fixed up after merging. Specifically: - Should be adjusted to properly use the dma mapping API. Axon needs this. - Probe logic needs reworking, in conjuction with the general probing code for of_platform devices. The dependencies here between EMAC, MAL, ZMII etc. make this complicated. At present, it usually works, because we initialize and register the sub-drivers before the EMAC driver itself, and (being in driver code) runs after the devices themselves have been instantiated from the device tree. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org> 2007-08-23 03:56:01 +00:00			`config IBM_EMAC`
			`tristate "PowerPC 4xx on-chip Ethernet support"`
			`depends on 4xx && !PPC_MERGE`
			`help`
			`This driver supports the PowerPC 4xx EMAC family of on-chip`
			`Ethernet controllers.`

			`config IBM_EMAC_RXB`
			`int "Number of receive buffers"`
			`depends on IBM_EMAC`
			`default "128"`

			`config IBM_EMAC_TXB`
			`int "Number of transmit buffers"`
			`depends on IBM_EMAC`
			`default "64"`

			`config IBM_EMAC_POLL_WEIGHT`
			`int "MAL NAPI polling weight"`
			`depends on IBM_EMAC`
			`default "32"`

			`config IBM_EMAC_RX_COPY_THRESHOLD`
			`int "RX skb copy threshold (bytes)"`
			`depends on IBM_EMAC`
			`default "256"`

			`config IBM_EMAC_RX_SKB_HEADROOM`
			`int "Additional RX skb headroom (bytes)"`
			`depends on IBM_EMAC`
			`default "0"`
			`help`
			`Additional receive skb headroom. Note, that driver`
			`will always reserve at least 2 bytes to make IP header`
			`aligned, so usually there is no need to add any additional`
			`headroom.`

			`If unsure, set to 0.`

			`config IBM_EMAC_PHY_RX_CLK_FIX`
			`bool "PHY Rx clock workaround"`
			`depends on IBM_EMAC && (405EP \|\| 440GX \|\| 440EP \|\| 440GR)`
			`help`
			`Enable this if EMAC attached to a PHY which doesn't generate`
			`RX clock if there is no link, if this is the case, you will`
			`see "TX disable timeout" or "RX disable timeout" in the system`
			`log.`

			`If unsure, say N.`

			`config IBM_EMAC_DEBUG`
			`bool "Debugging"`
			`depends on IBM_EMAC`
			`default n`

			`config IBM_EMAC_ZMII`
			`bool`
			`depends on IBM_EMAC && (NP405H \|\| NP405L \|\| 44x)`
			`default y`

			`config IBM_EMAC_RGMII`
			`bool`
			`depends on IBM_EMAC && 440GX`
			`default y`

			`config IBM_EMAC_TAH`
			`bool`
			`depends on IBM_EMAC && 440GX`
			`default y`