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| | * | net: ethernet: tundra: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: sun: drop owner assignment from platform_driversWolfram Sang2014-10-204-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: smsc: drop owner assignment from platform_driversWolfram Sang2014-10-203-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: sgi: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: seeq: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: samsung: sxgbe: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: octeon: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: nuvoton: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: natsemi: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: moxa: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: micrel: drop owner assignment from platform_driversWolfram Sang2014-10-203-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: marvell: drop owner assignment from platform_driversWolfram Sang2014-10-201-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: ibm: emac: drop owner assignment from platform_driversWolfram Sang2014-10-205-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: i825xx: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: freescale: fs_enet: drop owner assignment from platform_driversWolfram Sang2014-10-203-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: freescale: drop owner assignment from platform_driversWolfram Sang2014-10-206-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: faraday: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: davicom: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: cirrus: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: cadence: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: broadcom: genet: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: broadcom: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: apple: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: amd: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: altera: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: aeroflex: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: adi: drop owner assignment from platform_driversWolfram Sang2014-10-201-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: 8390: drop owner assignment from platform_driversWolfram Sang2014-10-203-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: ethernet: drop owner assignment from platform_driversWolfram Sang2014-10-204-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: softing: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: sja1000: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: mscan: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: c_can: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: cc770: drop owner assignment from platform_driversWolfram Sang2014-10-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| | * | net: can: drop owner assignment from platform_driversWolfram Sang2014-10-208-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | | | Merge tag 'gpio-v3.19-2' of ↵Linus Torvalds2014-12-141-24/+13
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull take two of the GPIO updates: "Same stuff as last time, now with a fixup patch for the previous compile error plus I ran a few extra rounds of compile-testing. This is the bulk of GPIO changes for the v3.19 series: - A new API that allows setting more than one GPIO at the time. This is implemented for the new descriptor-based API only and makes it possible to e.g. toggle a clock and data line at the same time, if the hardware can do this with a single register write. Both consumers and drivers need new calls, and the core will fall back to driving individual lines where needed. Implemented for the MPC8xxx driver initially - Patched the mdio-mux-gpio and the serial mctrl driver that drives modems to use the new multiple-setting API to set several signals simultaneously - Get rid of the global GPIO descriptor array, and instead allocate descriptors dynamically for each GPIO on a certain GPIO chip. This moves us closer to getting rid of the limitation of using the global, static GPIO numberspace - New driver and device tree bindings for 74xx ICs - New driver and device tree bindings for the VF610 Vybrid - Support the RCAR r8a7793 and r8a7794 - Guidelines for GPIO device tree bindings trying to get things a bit more strict with the advent of combined device properties - Suspend/resume support for the MVEBU driver - A slew of minor fixes and improvements" * tag 'gpio-v3.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (33 commits) gpio: mcp23s08: fix up compilation error gpio: pl061: document gpio-ranges property for bindings file gpio: pl061: hook request if gpio-ranges avaiable gpio: mcp23s08: Add option to configure IRQ output polarity as active high gpio: fix deferred probe detection for legacy API serial: mctrl_gpio: use gpiod_set_array function mdio-mux-gpio: Use GPIO descriptor interface and new gpiod_set_array function gpio: remove const modifier from gpiod_get_direction() gpio: remove gpio_descs global array gpio: mxs: implement get_direction callback gpio: em: Use dynamic allocation of GPIOs gpio: Check if base is positive before calling gpio_is_valid() gpio: mcp23s08: Add simple IRQ support for SPI devices gpio: mcp23s08: request a shared interrupt gpio: mcp23s08: Do not free unrequested interrupt gpio: rcar: Add r8a7793 and r8a7794 support gpio-mpc8xxx: add mpc8xxx_gpio_set_multiple function gpiolib: allow simultaneous setting of multiple GPIO outputs gpio: mvebu: add suspend/resume support gpio: gpio-davinci: remove duplicate check on resource ..
| * | | | mdio-mux-gpio: Use GPIO descriptor interface and new gpiod_set_array functionRojhalat Ibrahim2014-11-281-24/+13
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert mdio-mux-gpio to the GPIO descriptor interface and use the new gpiod_set_array function to set all output signals simultaneously. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2014-12-1214-209/+416
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull another networking update from David Miller: "Small follow-up to the main merge pull from the other day: 1) Alexander Duyck's DMA memory barrier patch set. 2) cxgb4 driver fixes from Karen Xie. 3) Add missing export of fixed_phy_register() to modules, from Mark Salter. 4) DSA bug fixes from Florian Fainelli" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits) net/macb: add TX multiqueue support for gem linux/interrupt.h: remove the definition of unused tasklet_hi_enable jme: replace calls to redundant function net: ethernet: davicom: Allow to select DM9000 for nios2 net: ethernet: smsc: Allow to select SMC91X for nios2 cxgb4: Add support for QSA modules libcxgbi: fix freeing skb prematurely cxgb4i: use set_wr_txq() to set tx queues cxgb4i: handle non-pdu-aligned rx data cxgb4i: additional types of negative advice cxgb4/cxgb4i: set the max. pdu length in firmware cxgb4i: fix credit check for tx_data_wr cxgb4i: fix tx immediate data credit check net: phy: export fixed_phy_register() fib_trie: Fix trie balancing issue if new node pushes down existing node vlan: Add ability to always enable TSO/UFO r8169:update rtl8168g pcie ephy parameter net: dsa: bcm_sf2: force link for all fixed PHY devices fm10k/igb/ixgbe: Use dma_rmb on Rx descriptor reads r8169: Use dma_rmb() and dma_wmb() for DescOwn checks ...
| * | | | net/macb: add TX multiqueue support for gemCyrille Pitchen2014-12-122-164/+328
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gem devices designed with multiqueue CANNOT work without this patch. When probing a gem device, the driver must first prepare and enable the peripheral clock before accessing I/O registers. The second step is to read the MID register to find whether the device is a gem or an old macb IP. For gem devices, it reads the Design Configuration Register 6 (DCFG6) to compute to total number of queues, whereas macb devices always have a single queue. Only then it can call alloc_etherdev_mq() with the correct number of queues. This is the reason why the order of some initializations has been changed in macb_probe(). Eventually, the dedicated IRQ and TX ring buffer descriptors are initialized for each queue. For backward compatibility reasons, queue0 uses the legacy registers ISR, IER, IDR, IMR, TBQP and RBQP. On the other hand, the other queues use new registers ISR[1..7], IER[1..7], IDR[1..7], IMR[1..7], TBQP[1..7] and RBQP[1..7]. Except this hardware detail there is no real difference between queue0 and the others. The driver hides that thanks to the struct macb_queue. This structure allows us to share a common set of functions for all the queues. Besides when a TX error occurs, the gem MUST be halted before writing any of the TBQP registers to reset the relevant queue. An immediate side effect is that the other queues too aren't processed anymore by the gem. So macb_tx_error_task() calls netif_tx_stop_all_queues() to notify the Linux network engine that all transmissions are stopped. Also macb_tx_error_task() now calls spin_lock_irqsave() to prevent the interrupt handlers of the other queues from running as each of them may wake its associated queue up (please refer to macb_tx_interrupt()). Finally, as all queues have previously been stopped, they should be restarted calling netif_tx_start_all_queues() and setting the TSTART bit into the Network Control Register. Before this patch, when dealing with a single queue, the driver used to defer the reset of the faulting queue and the write of the TSTART bit until the next call of macb_start_xmit(). As explained before, this bit is now set by macb_tx_error_task() too. That's why the faulting queue MUST be reset by setting the TX_USED bit in its first buffer descriptor before writing the TSTART bit. Queue 0 always exits and is the lowest priority when other queues are available. The higher the index of the queue is, the higher its priority is. When transmitting frames, the TX queue is selected by the skb->queue_mapping value. So queue discipline can be used to define the queue priority policy. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | jme: replace calls to redundant functionQuentin Lambert2014-12-121-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calls to tasklet_hi_enable are replaced by calls to tasklet_enable since the 2 functions are redundant. Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: ethernet: davicom: Allow to select DM9000 for nios2Tobias Klauser2014-12-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This chip is present on older revisions of the DE2 development kit. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: ethernet: smsc: Allow to select SMC91X for nios2Tobias Klauser2014-12-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This chip is present on the Nios2 Development Kit 2C35. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | cxgb4: Add support for QSA modulesHariprasad Shenai2014-12-123-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Firmware 1.12.25.0 added support for QSA module, adding the driver code for it. Also fixes some ethtool get settings for other module types. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | cxgb4/cxgb4i: set the max. pdu length in firmwareKaren Xie2014-12-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Programs the firmware of the maximum outgoing iscsi pdu length per connection. Signed-off-by: Karen Xie <kxie@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: phy: export fixed_phy_register()Mark Salter2014-12-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building the bcmgenet driver as module, I get: ERROR: "fixed_phy_register" [drivers/net/ethernet/broadcom/genet/genet.ko] undefined! commit b0ba512e225d72 ("net: bcmgenet: enable driver to work without device tree") which added a call to fixed_phy_register. But fixed_phy_register needs to be exported if used from a module. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | r8169:update rtl8168g pcie ephy parameterChun-Hao Lin2014-12-111-3/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add ephy parameter to rtl8168g. Also change the common function of rtl8168g from "rtl_hw_start_8168g_1" to "rtl_hw_start_8168g". And function "rtl_hw_start_8168g_1" is used for setting rtl8168g hardware parameters. Following is the explanation of what hardware parameter change for. rtl8168g may erroneous judge the PCIe signal quality and show the error bit on PCI configuration space when in PCIe low power mode. The following ephy parameters are for above issue. { 0x00, 0x0000, 0x0008 } { 0x0c, 0x37d0, 0x0820 } { 0x1e, 0x0000, 0x0001 } rtl8168g may return to PCIe L0 from PCIe L0s low power mode too slow. The following ephy parameter is for above issue. { 0x19, 0x8000, 0x0000 } Signed-off-by: Chunhao Lin <hau@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: dsa: bcm_sf2: force link for all fixed PHY devicesFlorian Fainelli2014-12-111-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For ports of the switch that we define as "fixed PHYs" such as MoCA, we would have our Port 7 special handling that would allow us to assert the link status indication. For other ports, such as e.g: RGMII_1 connected to a cable modem, we would rely on whatever the bootloader has left configured, which is a bad assumption to make, we really need to force the link status indication here. Fixes: 246d7f773c13 ("net: dsa: add Broadcom SF2 switch driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | fm10k/igb/ixgbe: Use dma_rmb on Rx descriptor readsAlexander Duyck2014-12-113-11/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change makes it so that dma_rmb is used when reading the Rx descriptor. The advantage of dma_rmb is that it allows for a much lower cost barrier on x86, powerpc, arm, and arm64 architectures than a traditional memory barrier when dealing with reads that only have to synchronize to coherent memory. In addition I have updated the code so that it just checks to see if any bits have been set instead of just the DD bit since the DD bit will always be set as a part of a descriptor write-back so we just need to check for a non-zero value being present at that memory location rather than just checking for any specific bit. This allows the code itself to appear much cleaner and allows the compiler more room to optimize. Cc: Matthew Vick <matthew.vick@intel.com> Cc: Don Skidmore <donald.c.skidmore@intel.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | r8169: Use dma_rmb() and dma_wmb() for DescOwn checksAlexander Duyck2014-12-111-8/+21
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The r8169 use a pair of wmb() calls when setting up the descriptor rings. The first is to synchronize the descriptor data with the descriptor status, and the second is to synchronize the descriptor status with the use of the MMIO doorbell to notify the device that descriptors are ready. This can come at a heavy price on some systems, and is not really necessary on systems such as x86 as a simple barrier() would suffice to order store/store accesses. As such we can replace the first memory barrier with dma_wmb() to reduce the cost for these accesses. In addition the r8169 uses a rmb() to prevent compiler optimization in the cleanup paths, however by moving the barrier down a few lines and replacing it with a dma_rmb() we should be able to use it to guarantee descriptor accesses do not occur until the device has updated the DescOwn bit from its end. One last change I made is to move the update of cur_tx in the xmit path to after the wmb. This way we can guarantee the device and all CPUs should see the DescOwn update before they see the cur_tx value update. Cc: Realtek linux nic maintainers <nic_swsd@realtek.com> Cc: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2014-12-121-23/+7
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc update from David Miller: "Not a lot of stuff this time around, mostly bug fixing: - Fix alignment of 32-bit crosscall datastructure on Leon, from Andreas Larsson. - Several fixes to the virtual disk driver on sparc64 by Dwight Engen, including handling resets of the service domain properly" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sunvdc: reconnect ldc after vds service domain restarts sparc/ldc: create separate ldc_unbind from ldc_free vio: create routines for inc,dec vio dring indexes sunvdc: fix module unload/reload sparc32, leon: Align ccall_info to prevent unaligned traps on crosscall
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