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path: root/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
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* ixgbe: Implement support for firmware-controlled PHYsMark Rustad2017-01-031-3/+405
| | | | | | | | Implement support for devices that have firmware-controlled PHYs. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Implement firmware interface to access some PHYsMark Rustad2017-01-031-0/+45
| | | | | | | | Implement new interface for firmware commands to access some PHYs. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Remove unused firmware version functions and methodMark Rustad2017-01-031-2/+1Star
| | | | | | | | | The firmware version method and functions are not used anywhere, so remove them all. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Fix issues with EEPROM accessMark Rustad2017-01-031-47/+28Star
| | | | | | | | | | | | | | | | | There are two problems with EEPROM access. One is that it needs to hold the semaphore until the entire response is read or else the response can be corrupted by other firmware accesses. The second problem is that acquiring and releasing the semaphore is slow, so it should be taken and released once when multiple EEPROM accesses will be done. Both of these issues can be solved by adding a new function, ixgbe_hic_unlocked, to issue firmware commands that will assume that the caller has acquired the needed semaphore. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Configure advertised speeds correctly for KR/KX backplaneDon Skidmore2017-01-031-3/+2Star
| | | | | | | | | This patch ensures that the advertised link speeds are configured for X553 KR/KX backplane. Without this patch the link remains at 1G when resuming from low power after being downshifted by LPLU. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Report driver version to firmware for x550 devicesTony Nguyen2017-01-031-1/+57
| | | | | | | | | | Some x550 devices require the driver version reported to its firmware; this patch sends the driver version string to the firmware through the host interface command for x550 devices. Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: do not disable FEC from the driverEmil Tantilov2017-01-031-2/+0Star
| | | | | | | | | FEC is configured by the NVM and the driver should not be overriding it. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add X553 FW ALEF supportDon Skidmore2016-11-051-66/+173
| | | | | | | | | | | This patch add X553 FW ALEF support for B0. ALEF is the new unified FW. This contains updated register defines for ALEF speed configuration. Likewise it also removes the AN_CNTL_8 usage from the native SFI flow as it is no longer supported by FW. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: use link instead of I2C combined abstractionEmil Tantilov2016-11-051-12/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce ixgbe_link_operations struct with the following changes: read_i2c_combined => read_link read_i2c_combined_unlocked => read_link_unlocked write_i2c_combined => write_link write_i2c_combined_unlocked => write_link_unlocked This will allow X550EM_a to override these methods for MDIO access while X550EM_x provides methods to use I2C combined access. This also adds a new structure, ixgbe_link_info, to hold information about the link. Initially this is just method pointers and a bus address. The functions involved in combined I2C accesses were moved from ixgbe_phy.c to ixgbe_x550.c. The underlying functions that carry out the combined I2C accesses were left in ixgbe_phy.c because they share some functions with other I2C methods. v2 - set hw->link.ops in probe. v3 - check ii->link_ops before setting it since we don't have it for all devices. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: remove SFP ixfi supportEmil Tantilov2016-11-051-65/+11Star
| | | | | | | | Remove SFP ixfi code since there is no HW that currently supports it. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add X553 PHY FC autoneg supportDon Skidmore2016-11-051-0/+211
| | | | | | | | | | | This patch adds X553 flow control auto negotiation for fiber and backplain. To enable this new function pointers were added as well as creating a function to dynamically set function pointer we can't define only on MAC type. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: fix link status check for copper X550emEmil Tantilov2016-11-051-8/+13
| | | | | | | | | Read the PHY register twice in order to get the correct value for autoneg_status. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: do not use ixgbe specific mdio definesEmil Tantilov2016-11-051-34/+31Star
| | | | | | | | | Replace some ixgbe specific MDIO defines with their equivalent from the kernel. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add support to retrieve and store LED link activeDon Skidmore2016-11-051-0/+3
| | | | | | | | | | This patch adds support to get the LED link active via the LEDCTL register. If the LEDCTL register does not have LED link active (LED mode field = 0x0100) set then default LED link active returned. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add X552 iXFI configuration helper functionDon Skidmore2016-11-051-34/+52
| | | | | | | | | | X553 doesn't need all the initialization that X552 did for iXFI. This patch will allow native SPI SFP+ to work with X553 devices. Future patches will add additional configuration as needed. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Use MDIO_PRTAD_NONE consistentlyMark Rustad2016-09-231-1/+1
| | | | | | | | | The value MDIO_PRTAD_NONE should be used to indicate no PHY address. Not 0, not 0xFFFF. Use the MDIO_PRTAD_NONE value consistently. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Resolve NULL reference by setting {read, write}_reg_mdiMark Rustad2016-09-231-0/+2
| | | | | | | | | Set the read_reg_mdi and write_reg_mdi method pointers for X550EM_A_10G_T devices to resolve jumping to NULL. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: make ixgbe_led_on/off_t_x550em staticEmil Tantilov2016-09-231-2/+2
| | | | | | | | | | | These functions are only used in ixgbe_x550.c. Fixes a warning when compiling with -Wmissing-prototypes Reported-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Eliminate useless message and improve logicMark Rustad2016-08-311-11/+5Star
| | | | | | | | | | Remove a useless log message and improve the logic for setting a PHY address from the contents of the MNG_IF_SEL register. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ixgbe: Add support for new X557 deviceDon Skidmore2016-08-211-0/+8
| | | | | | | | This patch adds support for the new copper device X557. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: add device to MDIO speed settingDon Skidmore2016-08-211-0/+2
| | | | | | | | | This shouldn't matter as nothing should be attached still to be consisted control MDIO speed for these devices as well. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Fix led interface for X557 devicesDon Skidmore2016-08-211-2/+50
| | | | | | | | | The X557 devices use a different interface to the LED for the port. This patch reflect that change. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: fix setup_fc for x550emEmil Tantilov2016-07-221-2/+2
| | | | | | | | | | mac->ops.setup_fc can be null for backplanes which can cause the driver to crash on load. Reported-by: Patrick McLean <patrickm@gaikai.com> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: use msleep for long delaysArnd Bergmann2016-04-251-1/+1
| | | | | | | | | | | | | | | | | The newly added x550em_a support causes a link failure on ARM because of an overly long time passed into udelay(): ERROR: "__bad_udelay" [drivers/net/ethernet/intel/ixgbe/ixgbe.ko] undefined! There are multiple variants of the ixgbe_acquire_swfw_sync_*() function, and the other ones all use msleep(), so we can safely assume that all callers are allowed to sleep, which makes msleep() a better replacement than mdelay(). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 49425dfc7451 ("ixgbe: Add support for x550em_a 10G MAC type") Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: use BIT() macroJacob Keller2016-04-251-4/+4
| | | | | | | | | | | | | | | | | Several areas of ixgbe were written before widespread usage of the BIT(n) macro. With the impending release of GCC 6 and its associated new warnings, some usages such as (1 << 31) have been noted within the ixgbe driver source. Fix these wholesale and prevent future issues by simply using BIT macro instead of hand coded bit shifts. Also fix a few shifts that are shifting values into place by using the 'u' prefix to indicate unsigned. It doesn't strictly matter in these cases because we're not shifting by too large a value, but these are all unsigned values and should be indicated as such. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Use correct FC setup function for x550em_aMark Rustad2016-04-251-2/+2
| | | | | | | | | | Somehow the wrong fc_setup function was used for x550em_a, so correct that. Also set setup_link to NULL as its value is determined later, just like it is with X550EM_x. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: fix default mac->ops.setup_link for X550EMEmil Tantilov2016-04-251-2/+2
| | | | | | | | | | | | | | | X550EM_a/x did not have a default value for mac->ops.setup_link which was causing link issues for backplane devices. This patch sets mac->ops.setup_link to ixgbe_setup_mac_link_X540 for X550EM_a/x which is also default for X550. This will result in mac->ops.setup_link calling the link setup function for the respective PHY type in case we do not need a special function to deal with it. Reported-by: Ken Cox <jkc@redhat.com> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add KR backplane support for x550em_aMark Rustad2016-04-081-4/+14
| | | | | | | Add support for x550em_a-based KR backplane devices. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add support for SGMII backplane interfaceMark Rustad2016-04-081-0/+58
| | | | | | | Add support for an SGMII backplane interface. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add support for SFPs with retimerMark Rustad2016-04-081-1/+132
| | | | | | | | Add support for SFPs with an external retimer. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Introduce function to control MDIO speedMark Rustad2016-04-081-6/+21
| | | | | | | | | Move code that controls MDIO speed into a new function because there will be more MACs that need the control. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Read and parse NW_MNG_IF_SEL registerMark Rustad2016-04-081-5/+32
| | | | | | | | | Read the IXGBE_NW_MNG_IF_SEL register and use it to set interface attributes. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Use new methods for PHY accessMark Rustad2016-04-081-3/+64
| | | | | | | | | Now x550em_a devices will use a new method for PHY access that will get the firmware token for each access. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add support for x550em_a 10G MAC typeMark Rustad2016-04-081-2/+206
| | | | | | | | | | | Add support for x550em_a 10G MAC type to the ixgbe driver. The new MAC includes new firmware commands that need to be used to control PHY and IOSF access, so that support is also added. The interface supported is a native SFP+ interface. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Use method pointer to access IOSF devicesMark Rustad2016-04-081-14/+18
| | | | | | | | | Provide method pointers and use them to access IOSF-attached devices. A new MAC will introduce a new access method. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Clean up interface for firmware commandsMark Rustad2016-04-081-8/+5Star
| | | | | | | | | | | | Clean up the interface for issuing firmware commands to use a void * instead of a u32 *. This eliminates a number of casts. Also clean up ixgbe_host_interface_command in a few other ways, eliminating comparisons with 0, redundant parens and minor formatting issues. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Change the lan_id and func fields to a u8 to avoid castsMark Rustad2016-04-081-1/+1
| | | | | | | | | Since the lan_id and func fields only ever hold small values, make them u8 to avoid casts used to silence warnings. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Place SWFW semaphore in known valid state at probeDon Skidmore2016-04-051-0/+2
| | | | | | | | | | | | | It is possible on some HW that a system reset could occur when we are holding the SWFW semaphore lock. So next time the driver was loaded we would see it incorrectly as locked. This patch will recover from that state by: Attempting to acquire the semaphore and then regardless of whether or not it was acquire we immediately release it. This will force us into a known good state. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Fix flow control for Xeon D KR backplaneMark Rustad2016-04-051-2/+84
| | | | | | | | | | Xeon D KR backplane is different from other backplanes, in that we can't use auto-negotiation to determine the mode. Instead, use whatever the user configured. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Make all unchanging ops structures constMark Rustad2016-04-041-9/+9
| | | | | | | | | | | | | The source for the ops structure contents are const, so make them so. Copy them in place with structure assignments instead of memcpys. Make the mbx_ops accessed by reference instead of making a copy of the source structure. Update copyright date on the touched files. Reported-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Use udelay to avoid sleeping while atomicMark Rustad2016-03-301-1/+1
| | | | | | | | | Use udelay instead of usleep_range because this can be called while a lock is held. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Correct X550EM_x revision checkMark Rustad2015-12-301-6/+3Star
| | | | | | | | | | | The X550EM_x revision check needs to check a value, not just a bit. Use a mask and check the value. Also remove the redundant check inside the ixgbe_enter_lplu_t_x550em, because it can only be called when both the mac type and revision check pass. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Correct spec violations by waiting after resetMark Rustad2015-12-031-1/+2
| | | | | | | | | | | | The ixgbe driver was violating the specification in the datasheet by not waiting 1ms before checking for the reset bit clearing. This is called out for devices supported by ixgbe, so implement the required delay. Reported-by: Dan Streetman <dan.streetman@canonical.com> Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add support for newer thermal alarmMark Rustad2015-12-031-3/+19
| | | | | | | | | | The newer copper PHY implementation used with newer X550EM_x devices uses a different thermal alarm type than the earlier one. Make changes to support both types. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Prevent KR PHY reset in ixgbe_init_phy_ops_x550emMark Rustad2015-12-031-13/+8Star
| | | | | | | | | | | | This patch removes KR PHY reset from ixgbe_init_phy_ops_x550em, since this function is meant to initialize function pointers for the detected PHY type. Internal PHY reset was moved to ixgbe_setup_internal_phy_t_x550em which will now detect which mode the internal PHY operates in and set it up as required. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Remove CS4227 diagnostic codeMark Rustad2015-11-231-80/+0Star
| | | | | | | | | Testing has now shown that the diagnostic code used with the CS4227 is no longer needed, so remove it. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add KR mode support for CS4227 chipMark Rustad2015-11-231-23/+62
| | | | | | | | | KR auto-neg mode is what we will be using going forward. The SW interface for this mode is different that what was used for iXFI. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Check for setup_internal_link methodMark Rustad2015-10-151-1/+1
| | | | | | | | | Only call the internal_setup_link method when it is provided. This check is required for newer version parts. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Fix CS4227-related semaphore error on reset failureMark Rustad2015-10-151-0/+9
| | | | | | | | | | If the reset never completes, it is necessary to retake the semaphore before returning, because the caller will release the semaphore. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* ixgbe: Add I2C bus mux supportMark Rustad2015-09-241-3/+60
| | | | | | | | | | | Take control of an I2C mux that selects which SFP is attached to the I2C bus. The control of the mux is captured in the taking and releasing of the related semaphore. Because only port 1 can control the mux, port 1 always leaves the mux set to select port 0. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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