- 11 Mar, 2016 40 commits
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Mike Marciniszyn authored
This patch adds an additional lock to reduce contention on the s_lock. This lock is used in post_send() so that the post_send is not serialized with the send engine and other send related processing. To do this the s_next_psn is now maintained on post_send() while post_send() related fields are moved to a new cache line. There is an s_avail maintained for the post_send() to mitigate trading cache lines with the send engine. The lock is released/acquired around releasing the just built packet to the egress mechanism. Reviewed-by:
Jubin John <jubin.john@intel.com> Reviewed-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by:
Dean Luick <dean.luick@intel.com> Signed-off-by:
Harish Chegondi <harish.chegondi@intel.com> Signed-off-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
Ira Weiny <ira.weiny@intel.com> Signed-off-by:
Doug Ledford <dledford@redhat.com>
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Harish Chegondi authored
This would avoid conflict with the functions in hfi1 that have similar names when both qib and hfi1 drivers are configured to be built into the kernel. This issue came up in the 0-day build report. Reviewed-by:
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Vennila Megavannan authored
A busy_jiffies variable is maintained and updated when rc qps are created and deleted. busy_jiffies is a scaled value of the number of rc qps in the device. busy_jiffies is incremented every rc qp scaling interval. busy_jiffies is added to the rc timeout in add_retry_timer and mod_retry_timer. The rc qp scaling interval is selected based on extensive performance evaluation of targeted workloads. Reviewed-by:
Vennila Megavannan <vennila.megavannan@intel.com> Signed-off-by:
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Sebastian Sanchez authored
It prevents the LED from staying on when the QSFP module is not present. Reviewed-by:
Easwar Hariharan <easwar.hariharan@intel.com> Signed-off-by:
Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by:
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Mike Marciniszyn authored
The patch series which added a new API for the RNR timer did not include an updated call in the loopback path. RC/UC RNR loopback would be broken without this. Reviewed-by:
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Easwar Hariharan authored
Currently, the driver fails to tune the SerDes and therefore prevents link up if the configuration file is missing or fails parsing or validation. This patch adds a fallback option so that the 8051 is asked to tune for an unknown channel and possibly get the link up if tuning succeeds. It also adds a user-friendly message to update the configuration file if it is out-of-date. Reviewed-by:
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Easwar Hariharan authored
The platform configuration data has been moved into the EFI variable store where it is populated by the HFI1 option ROM. This patch pulls the configuration data from the new location, retaining a fallback to request_firmware. Reviewed-by:
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Hari Prasath Gujulan Elango authored
Replace the timer API's to initialize a timer & then assign the callback function by the setup_timer() API. Signed-off-by:
Hari Prasath Gujulan Elango <hgujulan@visteon.com> Signed-off-by:
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Mike Marciniszyn authored
The field is a vestige from ipath. Reviewed-by:
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Mike Marciniszyn authored
This patch is a prerequisite for adding a separate lock for post send. The timing of updating s_last needs to be before returning any send completion to avoid a race between a poll cq seeing a completion and the post send checking for a full queue. Reviewed-by:
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Mike Marciniszyn authored
This patch is a prerequisite for adding a separate lock for post send. The timing of updating s_last needs to be before returning any send completion to avoid a race between a poll cq seeing a completion and the post send checking for a full queue. Reviewed-by:
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Mike Marciniszyn authored
This is needed to debug ULP issues with getting retry attributes correctly specified. Reviewed-by:
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Mike Marciniszyn authored
The qp->timeout field is duplicated in the seqfile print. Remove it. Reviewed-by:
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Mike Marciniszyn authored
Use the new RNR timer for hfi1. For qib, this timer doesn't exist, so exploit driver callbacks to use the new timer as appropriate. Reviewed-by:
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Mike Marciniszyn authored
Add a new rnr timer to hfi1. This allows for future optimizations having the retry and rnr timers separate. Reviewed-by:
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Mike Marciniszyn authored
Use new timer API to optimize maintenance of timers during ACK processing. When we are still expecting ACKs, mod the timer to avoid a heavyweight delete/add. Otherwise, insure do_rc_ack() maintains the timer as it had. Reviewed-by:
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Mike Marciniszyn authored
Use the new timer routines. Reviewed-by:
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Mike Marciniszyn authored
Centralize disparate timer maintenance. This allow for central control and changes to the RC timer handling including future optimizations. Reviewed-by:
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Sebastian Sanchez authored
It removes the unused struct hfi1_verbs_counters from verbs.h Reviewed-by:
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Sebastian Sanchez authored
It enables access to counters in /sys/class/infiniband/hfi1_0/ports/1/counters by providing infrastructure when PMA queries occur. Counters symbol_error and VL15_dropped are not supported in OPA, therefore, 0 will always be returned. In addition, two common routines (pma_get_opa_port_dctrs, pma_get_opa_port_ectrs) were created to query counters to avoid code duplication. Reviewed-by:
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Sebastian Sanchez authored
It replaces goto's for break and return statements in process_perf_opa(). Reviewed-by:
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Sebastian Sanchez authored
This commit changes the data type for port_num in pma_get_opa_porterrors() from unsigned long to u8. Reviewed-by:
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Mitko Haralanov authored
A race was discovred in the user SDMA code, which could result in an process being stuck in the kernel call indefinitely in certain error conditions. If, during the processing of a user SDMA request, there was an error *and* all outstanding SDMA descriptor had been completed by the time the that error case was handled in the calling function, the state of the packet queue would not get correctly updated resulting in the process subsequently getting stuck, thinking that there are more descriptors to be completed. To handle this scenario, the driver now checks the submitted packet count vs. the completed. If all submitted packets have also been completed, the driver can safely free the request and signal user level. Otherwise, this will be handled by the completion callback. Reviewed-by:
Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by:
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Dean Luick authored
Remove unused nsbr count from PCIe Gen3 code Reviewed-by:
Stuart Summers <john.s.summers@intel.com> Signed-off-by:
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Dean Luick authored
Add a variable eprom_available to each device, replacing the global of the same name. This is to allow multiple HFI devices with different EPROM availability to operate correctly on the the same system. Reviewed-by:
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Sadanand Warrier authored
Add a new option to the snoop ioctl which allows credits to be allocated across all VLs. Previously only VL0 and VL15 had credits allocated. The new option used in the ioctl HFI1_SNOOP_IOCSET_OPTS allows credits to be allocated so that VL15 will have at least 8.5KB credits and the other VLs will have the rest of the credits divided equally across themselves. The total number of credits are stored in the upper 16 bits of the integer passed and the cumulative value should ensure that VL0 has at least 8.5KB and each VL a minimum of 2KB + 128 bytes Reviewed-by:
Sadanand Warrier <sadanand.warrier@intel.com> Signed-off-by:
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Mitko Haralanov authored
To facilitate locked page counting, the user SDMA routines would maintain a list of io vectors, which were freed in the completion callback and then unpin the associated pages during the next call into the kernel. Since the size of this list was unbounded, doing this was bad for performance because the driver ended up spending too much time freeing the io vectors. This commit changes how the io vector freeing is done by moving the actual page unpinning in the callback and maintaining a count of unpinned pages. This count can then be used during the next call into the kernel to update the mm->pinned_vm variable (since that requires process context and the ability to sleep.) Reviewed-by:
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Easwar Hariharan authored
LinkDownReason LocalMediaNotInstalled lacked an underscore and was inconsistent with other defines in the same family. This patch fixes this. Reviewed-by:
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Harish Chegondi authored
Delete code from query_port which has been moved into rvt_query_port Create a call back function to shut down a port which may be called from rvt_modify_port Signed-off-by:
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Dennis Dalessandro authored
Query gid is in rdmavt, but still relies on the driver to maintain the guid table. Add the necessary driver call back and remove the existing verb handler. Reviewed-by:
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Jubin John authored
Clean up init_cntrs() by removing unnecessary memsets and debug statements Suggested-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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Dean Luick authored
The LRH has a 12 bit packet length field, not 11 bit. This caused a snoop packet length miscalculation leading to a crash when sending a large ping over IPoIB while running opapacketcapture. Reviewed-by:
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Dean Luick authored
Change the TWSI reset function so it will stop the reset once the lines are in an expected state. Reviewed-by:
Pablo Cacho <pablo.cacho@intel.com> Signed-off-by:
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Dean Luick authored
There are several reasons why PCIE AER cannot be enabled. Do not report the failure to enable as an error. Reviewed-by:
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Easwar Hariharan authored
This patch implements LED beaconing for maintenance. A MAD packet with the LEDInfo attribute set to 1 will enable LED beaconing with a duty cycle of 2s on and 1.5s off. A MAD packet with the LEDInfo attribute set to 0 will disable beaconing and return the LED to normal operation. Reviewed-by:
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Dean Luick authored
Copy the last 8 bytes of user mode RC WRITE_ONLY and WRITE_LAST opcodes separately from the rest of the data. It is a de-facto standard for some MPI implementations to use a poll on the last few bytes of a verbs message to indicate that the message has been received rather than follow the required function method. The driver uses the kernel memcpy routine, which becomes "rep movsb" on modern machines. This copy, while very fast, does not guarantee in-order copy completion and the result is an occasional perceived corrupted packet. Avoid the issue by splitting the last 8 bytes to copy from the verbs opcodes where it matters and performing an in-order byte copy. Reviewed-by:
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Dean Luick authored
A host fabric serdes reset is required to go back to polling. However, access to the fabric serdes may have been invalidated by the sibling HFI when it downloads its fabric serdes firmware. Work around this by re-downloading and re-validating the serdes firmware at reset time on Bx hardware. Reviewed-by:
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Dean Luick authored
Make physical state change reporting be per-device, not global to reduce excessive reports of "physical state changed" Reviewed-by:
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Mitko Haralanov authored
To ensure correct operation between the driver and PSM with respect to managing the SDMA request ring, it is important that the status for a particular request slot is set at the correct time. Otherwise, PSM can get out of sync with the driver, which could lead to hangs or errors on new requests. Properly determining of when to set the error status of a SDMA slot depends on knowing exactly when the last txreq for that request has been completed. This in turn requires that the driver knows exactly how many requests have been generated and how many of those requests have been successfully submitted to the SDMA queue. The previous implementation of the mid-layer SDMA API did not provide a way for the caller of sdma_send_txlist() to know how many of the txreqs in the input list have actually been submitted without traversing the list and counting. Since sdma_send_txlist() already traverses the list in order to process it, requiring such traversal in the caller is completely unnecessary. Therefore, it is much easier to enhance sdma_send_txlist() to return the number of successfully submitted txreqs. This, in turn, allows the caller to accurately determine the progress of the SDMA request and, therefore, correctly set the error status at the right time. Reviewed-by:
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Dean Luick authored
At the end of the packet processing interrupt and thread handler, the RcvAvail interrupt is finally cleared down. There is a window between the last packet check (via DMA to memory) and interrupt clear-down. The code to recheck for a packet once the RcvAVail interrupt is enabled must ultimately use a CSR read of RcvHdrTail rather than depend on DMA'ed memory. This change adds a CSR read of RcvHdrTail if the memory check does not show a packet preset. The memory check is retained as a quick test before doing the more expensive, but always correct, CSR read. In the ASIC, the CSR read used to force the RcvAvail clear-down write to complete may bypass queued DMA writes to memory. The only correct way to decide if a packet has arrived without an interrupt to push DMA to memory ahead of itself is to read the tail directly after RcvAvail has been cleared down. It is not sufficient to just read the tail and skip pushing the clear-down. Both must be done. The tail read will not push clear-down write due to it being in a different area of the chip. At this point, it is OK to have packet data still being DMA'ed to memory. This is the end of packet processing for previous packets. If the driver detects a new packet has arrived before interrputs were re-enabled, it will force a new interrupt and the interrupt will push the packet DMAs to memory, where the driver will then react to the interrupt and do normal packet processing. Reviewed-by:
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