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path: root/drivers/net/ethernet/cadence/macb.h
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* net/macb: change RX path for GEMNicolas Ferre2013-06-06
| | | | | | | | | | | GEM is able to adapt its DMA buffer size, so change the RX path to take advantage of this possibility and remove all kind of memcpy in this path. This modification introduces function pointers for managing differences between MACB and GEM adapter type. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: increase RX buffer size for GEMNicolas Ferre2013-06-06
| | | | | | | | | | | | Macb Ethernet controller requires a RX buffer of 128 bytes. It is highly sub-optimal for Gigabit-capable GEM that is able to use a bigger DMA buffer. Change this constant and associated macros with data stored in the private structure. RX DMA buffer size has to be multiple of 64 bytes as indicated in DMA Configuration Register specification. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: fix ISR clear-on-write behavior only for some SoCNicolas Ferre2013-05-14
| | | | | | | | | | | | | | Commit 749a2b6 (net/macb: clear tx/rx completion flags in ISR) introduces clear-on-write on ISR register. This behavior is not always implemented when using Cadence MACB/GEM and is breaking other platforms. We are using the Design Configuration Register 1 information and a capability property to actually activate this clear-on-write behavior on ISR. Reported-by: Hein Tibosch <hein_tibosch@yahoo.es> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Hein Tibosch <hein_tibosch@yahoo.es> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: force endian_swp_pkt_en to offSteffen Trumtrar2013-03-28
| | | | | | | | | | | | The core has a bit for swapping packet data endianism. Reset default from Cadence is off. Xilinx however, who uses this core on the Zynq SoCs, opted for on. Force it to off. This shouldn't change the behaviour for current users of the macb, but enables usage on Zynq devices. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: GEM DMA configuration register updateNicolas Ferre2012-11-23
| | | | | | | | | | | Add information to the DMA Configuration Register to maximize system performance: - rx/tx packet buffer full memory size - allow possibility to use INCR16 if supported Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Joachim Eastwood <manabian@gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: clear unused address registerJoachim Eastwood2012-11-14
| | | | | | | | | | | | | Only the first register set is used for matching but we support getting the initial hw addr from any of the registers. To prevent stale entries and false matches clear unused register sets. This most important for the at91_ether driver where u-boot always uses the 2nd register set. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/at91_ether: drop board_data private struct memberJoachim Eastwood2012-11-07
| | | | | | | | No longer used after gpio phy interrupt support was removed from at91_ether. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/at91_ether: use stat function from macbJoachim Eastwood2012-11-07
| | | | | Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: export macb_set_hwaddr and macb_get_hwaddrJoachim Eastwood2012-11-07
| | | | | | | for usage in at91_ether driver. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: better manage tx errorsNicolas Ferre2012-11-01
| | | | | | | | | | | | | | | | Handle all TX errors, not only underruns. TX error management is deferred to a dedicated workqueue. Reinitialize the TX ring after treating all remaining frames, and restart the controller when everything has been cleaned up properly. Napi is not stopped during this task as the driver only handles napi for RX for now. With this sequence, we do not need a special check during the xmit method as the packets will be caught by TX disable during workqueue execution. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: ethtool interface: add register dump featureNicolas Ferre2012-11-01
| | | | | | | | | | | | Add macb_get_regs() ethtool function and its helper function: macb_get_regs_len(). The version field is deduced from the IP revision which gives the "MACB or GEM" information. An additional version field is reserved. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Tested-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: clean up ring buffer logicHavard Skinnemoen2012-11-01
| | | | | | | | | | | | | | | | | | | Instead of masking head and tail every time we increment them, just let them wrap through UINT_MAX and mask them when subscripting. Add simple accessor functions to do the subscripting properly to minimize the chances of messing this up. This makes the code slightly smaller, and hopefully faster as well. Also, doing the ring buffer management this way will simplify things a lot when making the ring sizes configurable in the future. Available number of descriptors in ring buffer function by David Laight. Signed-off-by: Havard Skinnemoen <havard@skinnemoen.net> [nicolas.ferre@atmel.com: split patch in topics, adapt to newer kernel] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/macb: Add support for Gigabit Ethernet modePatrice Vilchez2012-11-01
| | | | | | | | | Add Gigabit Ethernet mode to GEM cadence IP and enable RGMII connection. Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/at91_ether: clean up rx buffer handlingJoachim Eastwood2012-10-19
| | | | | | | | This patch does two things: * Use macb struct members and remove at91_ether ones * Alloc DMA buffers on netdev start and dealloc on stop Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/at91_ether: use macb dma description structJoachim Eastwood2012-10-19
| | | | Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/at91_ether: share macb_set_rx_mode with macbJoachim Eastwood2012-10-19
| | | | Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/at91_ether: use ethtool and mdio from macbJoachim Eastwood2012-10-19
| | | | | | | | | | This rips out the at91_ether phy handling and ethtool stuff and replace it with equivalent stuff from macb. The only thing lost is the phy irq support from at91_ether, but this can be added to macb and then benefit all users. Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/macb: export some symbols for at91_etherJoachim Eastwood2012-10-19
| | | | | | | Export some symbols to start sharing code between macb and at91_ether drivers. Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/at91_ether: use pclk member instead of ether_clkJoachim Eastwood2012-10-19
| | | | | | Remove old at91_priv member and use pclk member from macb. Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/at91_ether/macb: absorb at91_private in to macb private structJoachim Eastwood2012-10-19
| | | | | | | This will make it easier to share code between the drivers and eventually merge them into one driver. Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/macb: add AT91RM9200 specific registers and bits to headerJoachim Eastwood2012-10-19
| | | | Signed-off-by: Joachim Eastwood <manabian@gmail.com>
* net/macb: add DT support for Cadence macb/gem driverJean-Christophe PLAGNIOL-VILLARD2011-12-16
| | | | | | | | | | | Allow the device tree to provide the mac address and the phy mode. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: change "compatible" node property, doc and DT hwaddr] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> [jamie@jamieiles.com: add "gem" compatibility strings and doc] Acked-by: Jamie Iles<jamie@jamieiles.com> Acked-by: David S. Miller <davem@davemloft.net>
* macb: allow GEM to have configurable receive buffer sizeJamie Iles2011-11-22
| | | | | | | | | | GEM has configurable receive buffer sizes so requires this to be programmed up. Any size < 2048 and a multiple of 64 bytes is permitted. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* macb: support DMA bus widths > 32 bitsJamie Iles2011-11-22
| | | | | | | | | | | Some GEM implementations may support DMA bus widths up to 128 bits. We can get the maximum supported DMA bus width from the design configuration register so use that to program the device up. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* macb: support statistics for GEM devicesJamie Iles2011-11-22
| | | | | | | | | | | GEM devices have a different number of statistics registers and they are at a different offset to MACB devices. Make the statistics collection method dependent on device type. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* macb: support higher rate GEM MDIO clock divisorsJamie Iles2011-11-22
| | | | | | | | | | | GEM devices support larger clock divisors and have a different range of divisors. Program the MDIO clock divisors based on the device type. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* macb: initial support for Cadence GEMJamie Iles2011-11-22
| | | | | | | | | | | | | | | | | | | | The Cadence GEM is based on the MACB Ethernet controller but has a few small changes with regards to register and bitfield placement. This patch detects the presence of a GEM by reading the module ID register and setting a flag appropriately. This handles the new HW address, USRIO and hash register base register locations in GEM. v3: - convert to macb_is_gem() inline rather than storing a boolean flag - handle rx_overrun stats for gem Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* macb: Move the Atmel driverJeff Kirsher2011-08-12
Move the Atmel driver into drivers/net/ethernet/cadence/ and make the necessary Kconfig and Makefile changes. CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
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