- 17 Nov, 2010 40 commits
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Bruce Allan authored
The driver can fail initializing the hardware when manageability firmware is performing concurrent MDIO operations because the hardware semaphore scheme to prevent concurrent operations between software and firmware is incorrect for 82574/82583. Instead of using the SWSM register, the driver should be using the EXTCNF_CTRL register. A software mutex is also added to prevent simultaneous software threads from performing similar concurrent accesses. Signed-off-by:
Bruce Allan <bruce.w.allan@intel.com> Tested-by:
Emil Tantilov <emil.s.tantilov@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Bruce Allan authored
SerDes Link detection on certain 82571 mezzanine cards can fail when the link is forced, the link partner does not recognize forced link and the link partner sends null code words. Detect the null code words and return to auto-negotiation state which causes the link partner to begin responding with valid code words. Within a reasonable interval the link will finally settle as forced by both partners. Signed-off-by:
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Greg Rose authored
declaration. Reported-by:
Andi Kleen <andi@firstfloor.org> Signed-off-by:
Greg Rose <gregory.v.rose@intel.com> Tested-by:
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Julian Stecklina authored
Removed unused variable in igbvf. Signed-off-by:
Julian Stecklina <jsteckli@os.inf.tu-dresden.de> Acked-by:
Greg Rose <greg.v.rose@intel.com> Tested-by:
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Greg Rose authored
Update version string and copyright notice Signed-off-by:
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Greg Rose authored
The driver is calling netif_carrier_off and netif_tx_stop_all_queues before the netdevice is registered which causes an Oops. Move call to netif_carrier_off after the netdevice is registered and remove call to netif_tx_stop_all_queues because there aren't any TX queues yet. Signed-off-by:
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Eric Dumazet authored
I noticed ring variable was initialized before allocations, and that memory node management was a bit ugly. We also leak memory in case of ring allocations error. Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
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Don Skidmore authored
This patch adds support for the x540 MAC which is the next MAC in the 82598/82599 line. Signed-off-by:
Don Skidmore <donald.c.skidmore@intel.com> Signed-off-by:
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Don Skidmore authored
Adds the new x540.c file and Aquantia 1202 PHY for X540 support. Signed-off-by:
Stephen Ko <stephen.s.ko@intel.com> Signed-off-by:
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Don Skidmore authored
The new MAC type X540 shares much of the same functionality of some silicon specific functions. To reduce duplicate code, made these functions generic. Signed-off-by:
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Yi Zou authored
When invalidating the DDP context is invalidated, the HW may not be done with the user buffer right away. In which case, we poll the FCBUFF register to check if the buffer valid bit is cleared or not, if not, we wait for max 100us that is guaranteed by the HW. Signed-off-by:
Yi Zou <yi.zou@intel.com> Tested-by:
Ross Brattain <ross.b.brattain@intel.com> Signed-off-by:
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Yi Zou authored
The hw automatically invalidates the context if DDP is successful or there is error detected. In case there is no error status available from the hw, initializing the per context error status to be 1 allows the DDP context to be still invalidated via the upper layer call to ddp_put(). Signed-off-by:
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Yi Zou authored
There is no point to allow incoming DDP requests from the upper layer stack if the adapter is going down or being reset. Signed-off-by:
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John Fastabend authored
The Tx hang logic has been known to detect false hangs when the device is receiving pause frames or has delayed processing for some other reason. This patch makes the logic more robust and resolves these known issues. The old logic checked to see if the device was paused by querying the HW then the hang logic was aborted if the device was currently paused. This check was racy because the device could have been in the pause state any time up to this check. The other operation of the hang logic is to verify the Tx ring is still advancing the old logic checked the EOP timestamp. This is not sufficient to determine the ring is not advancing but only infers that it may be moving slowly. Here we add logic to track the number of completed Tx descriptors and use the adapter stats to check if any pause frames have been received since the previous Tx hang check. This way we avoid racing with the HW register and do not detect false hangs if the ring is advancing slowly. This patch is primarily the work of Jesse Brandeburg. I clean it up some and fixed the PFC checking. Signed-off-by:
John Fastabend <john.r.fastabend@intel.com> Tested-by:
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Alexander Duyck authored
This change resolves some null function pointer accesses on 82598 when a multi-speed fiber module is inserted into the adapter. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Tested-by:
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Alexander Duyck authored
The q_vector back pointer was not being set in the rings so it would not have been possible to determine the parent q_vector of the ring. Signed-off-by:
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Alexander Duyck authored
This change cleans up some of the items in ixgbe_map_rings_to_vectors. Specifically it merges the two for loops and drops the unnecessary vectors parameter. It also moves the vector names into the q_vectors themselves. Signed-off-by:
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Alexander Duyck authored
This change is meant to improve the stack utilization and simplify the math used in ixgbe_set_itr_msix. Signed-off-by:
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Alexander Duyck authored
There are a number of places where we use the variable j to contain the register index of the ring. Instead of using such a non-descriptive variable name it is better that we name it reg_idx so that it is clear what the variable contains. Signed-off-by:
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Alexander Duyck authored
This change is just to cleanup some confusing logic in ixgbe_cache_ring_rss which can be simplified by adding a conditional with return to the start of the call. Signed-off-by:
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Alexander Duyck authored
This change address a few whitespace issues in DCB #ifdefs, adds a comment calling out the DCB specific registers, and nests an if statement inline with a number of if statements related to flow control. Signed-off-by:
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Alexander Duyck authored
This change adds support for certain 82599 based Mezzanine adapters. Signed-off-by:
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Alexander Duyck authored
This change makes it so that we always disable SCTP regardless of mac type since we shouldn't need to check mac type before disabling a feature that isn't supported on a given piece of hardware. Signed-off-by:
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Alexander Duyck authored
This change replaces a number of if/elseif/else statements with switch statements to support the addition of future devices to the ixgbe driver. Signed-off-by:
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Alexander Duyck authored
This change cleans up the use of rsc_count and changes it to a boolean since the actual numerical value is used nowhere in the Rx cleanup path. I am also moving the skb count into the RSC_CB path since it is much easier to track it there than when it is passed as a parameter to various function calls. Signed-off-by:
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Alexander Duyck authored
This change cleans up the ixgbe_atr filter setup function so that it uses fewer items from the stack. Since the code is only applicable to IPv4 w/ TCP it makes sense to just use the pointers based on the headers themselves instead of copying them to temp variables and then writing those to the filters. Signed-off-by:
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Alexander Duyck authored
The code for ixgbe_clean_rx_irq was much more tangled up than it needed to be in terms of logic statements and unused variables. This change untangles much of that and drops several unused variables such as cleaned which was being returned but never checked. Signed-off-by:
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Alexander Duyck authored
This changes the numbering scheme slightly. Previously the ordering was coming out like this: Rx-2 Rx-1 Rx-0 TxRx-0 Which would drop two queues on CPU 0. This change makes it so that the ordering is like this: Rx-3 Rx-2 Rx-1 TxRx-0 This means that each CPU will have it's own Rx queue, and only CPU 0 will have the Tx queue. Signed-off-by:
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Alexander Duyck authored
The code as it existed could re-arm the queues when it was requesting a HW reset due to a TX hang. Instead of doing that this change makes it so that we will just exit if the hardware is believed to be hung. Signed-off-by:
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Alexander Duyck authored
RSC will flush its descriptors every time the interrupt throttle timer expires. In addition there are known issues with RSC when the rx-usecs value is set too low. As such we are forced to clear the RSC_ENABLED bit and reset the adapter when the rx-usecs value is set too low. However we do not need to clear the NETIF_F_LRO flag because it is used to indicate that the user wants to leave the LRO feature enabled, and in fact with this change we will now re-enable RSC as soon as the rx-usecs value is increased and the flag is still set. Signed-off-by:
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Alexander Duyck authored
This change makes it so that we perform link setup with interrupts disabled. If the SFP has not been detected previously we will schedule the SFP detection task to run in order to detect link. By doing this we avoid the possibility of interrupts firing in the middle of our link setup during ixgbe_up_complete. In addition this change makes it so that the multi-speed fiber setup and SFP setup are not mutually exclusive. The addresses issues seen in which a link would only come up at 1G on some multi-speed fiber modules. Signed-off-by:
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Alexander Duyck authored
This change adds a set of state flags to the rings that allow them to independently function allowing for features like RSC, packet split, and TX hang detection to be done per ring instead of for the entire device. This is accomplished by re-purposing the flow director reinit_state member and making it a global state instead since a long for a single bit flag is a bit wasteful. Signed-off-by:
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Alexander Duyck authored
This is the start of work to sort out what belongs in the rings and what belongs in the q_vector. Items like the CPU variable for make much more sense in the q_vector since the CPU is a per-interrupt thing rather than a per ring thing. I also added a back-pointer from the ring to the q_vector. Signed-off-by:
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Alexander Duyck authored
This change moves an adapter pointer into the private portion of the pci_dev instead of a pointer to the netdev. The reason for this change is because in most cases we just want the adapter anyway. In addition as we start moving toward multiple netdevs per port we may want to move the adapter pointer out of the netdevs entirely. Signed-off-by:
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Alexander Duyck authored
Missed some code that was left floating around in the DCB configuration for the TXDCTL register. As a result the register was being messed with in two different spots when we only needed to do the change once. Signed-off-by:
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Alexander Duyck authored
The main reason for this change is to keep the suspend/resume logic matched up. The clear_interrupt_scheme function will disable MSI-X which will effect the PCIe configuration space. Therefore we will want to do it before we save state to avoid having the interrupt state restored by pci_restore_state, and then trying to re-enable MSI/MSI-X interrupts via ixgbe_setup_interrupt_scheme. Signed-off-by:
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Alexander Duyck authored
This change places a netdev pointer directly into the ring structure. This way we can avoid having to determine which netdev we are supposed to be using and can just access the one on the ring directly. As a result of this change further collapse of the code is possible by dropping the adapter from ixgbe_alloc_rx_buffers, and the netdev pointer from ixgbe_xmit_frame_ring_adv and ixgbe_maybe_stop_tx. Signed-off-by:
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Alexander Duyck authored
This change moved some of the RX and TX stats into separate structures and them placed those structures in a union in order to help reduce the size of the ring structure. Signed-off-by:
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Alexander Duyck authored
This change is meant to simplify DMA map/unmap by providing a device pointer. As a result the adapter pointer can be dropped from many of the calls. Signed-off-by:
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Alexander Duyck authored
This change drops ring->head since it is not used in any hot-path and can easily be determined using IXGBE_[RT]DH(ring->reg_idx). It also changes ring->tail into a true pointer so we can avoid unnecessary pointer math to find the location of the tail. In addition I also dropped the setting of head and tail in ixgbe_clean_[rx|tx]_ring. The only location that should be setting the head and tail values is ixgbe_configure_[rx|tx]_ring and that is only while the queue is disabled. Signed-off-by:
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