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path: root/drivers/net/ethernet/cavium/liquidio/octeon_config.h
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* liquidio: remove obsolete functions and data structuresFelix Manlunas2018-08-301-0/+1
| | | | | | | | | 1. Remove unused functions and data structures. 2. Change the sending of the remaining soft commands to synchronous. Signed-off-by: Weilin Chang <weilin.chang@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: improve soft command handlingFelix Manlunas2018-08-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Set LIO_SC_MAX_TMO_MS as the maximum timeout value for a soft command (sc). All sc's use this value as a hard timeout value. Add expiry_time in struct octeon_soft_command to keep the hard timeout value. The field wait_time and timeout in struct octeon_soft_command will be obsoleted in the last patch of this patch series. 2. Add processing a synchronous sc in sc response thread lio_process_ordered_list. The memory allocated for a synchronous sc will be freed by lio_process_ordered_list() to the sc pool. 3. Add two response lists for lio_process_ordered_list to process the storage allocated for sc's: OCTEON_DONE_SC_LIST response list keeps all sc's which will be freed to the pool after their requestors have finished processing the responses. OCTEON_ZOMBIE_SC_LIST response list keeps all sc's which have got LIO_SC_MAX_TMO_MS timeout. When an sc gets a hard timeout, lio_process_order_list() will recheck its status 1 ms later. If the status has not updated by the firmware at that time, the sc will be removed from OCTEON_DONE_SC_LIST response list to OCTEON_ZOMBIE_SC_LIST response list. The sc's in the OCTEON_ZOMBIE_SC_LIST response list will be freed when the driver is unloaded. Signed-off-by: Weilin Chang <weilin.chang@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: xmit_more supportIntiyaz Basha2017-10-271-0/+2
| | | | | | | | | | | | Defer ringing the Tx doorbell if skb->xmit_more is set unless the Tx queue is full or stopped. To keep latency low, use a deferral limit of 8 packets. We chose 8 because Octeon can fetch at most 8 packets in a single PCI read, and our tests show that 8 results in low latency. Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: added support for ethtool --set-ring featureIntiyaz Basha2017-08-151-2/+11
| | | | | | | | added support for ethtool --set-ring feature Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: replace info-pointer mode with buffer-pointer-only modePrasad Kanneganti2017-06-191-11/+2Star
| | | | | | | | | | | | | | | | | | | | | Each Octeon output ring can DMA packets to host memory in two modes: info- pointer mode and buffer-pointer-only mode. In info-pointer mode, Octeon takes two buffer pointers for each packet and places the length of the packet along with specified number of bytes from the beginning of the packet into one buffer and the rest of the packet in a separate buffer. In buffer-pointer-only mode, Octeon takes single buffer pointer and places the length of the packet at the beginning of the buffer followed by the packet data. This patch switches all Octeon output rings from info-pointer mode to buffer-pointer-only mode. This results in fewer DMA setups and cache line snoops. Signed-off-by: Prasad Kanneganti <pkanneganti@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: improve UDP TX performanceVSR Burru2017-03-091-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve UDP TX performance by: * reducing the ring size from 2K to 512 * replacing the numerous streaming DMA allocations for info buffers and gather lists with one large consistent DMA allocation per ring BQL is not effective here. We reduced the ring size because there is heavy overhead with dma_map_single every so often. With iommu=on, dma_map_single in PF Tx data path was taking longer time (~700usec) for every ~250 packets. Debugged intel_iommu code, and found that PF driver is utilizing too many static IO virtual address mapping entries (for gather list entries and info buffers): about 100K entries for two PF's each using 8 rings. Also, finding an empty entry (in rbtree of device domain's iova mapping in kernel) during Tx path becomes a bottleneck every so often; the loop to find the empty entry goes through over 40K iterations; this is too costly and was the major overhead. Overhead is low when this loop quits quickly. Netperf benchmark numbers before and after patch: PF UDP TX +--------+--------+------------+------------+---------+ | | | Before | After | | | Number | | Patch | Patch | | | of | Packet | Throughput | Throughput | Percent | | Flows | Size | (Gbps) | (Gbps) | Change | +--------+--------+------------+------------+---------+ | | 360 | 0.52 | 0.93 | +78.9 | | 1 | 1024 | 1.62 | 2.84 | +75.3 | | | 1518 | 2.44 | 4.21 | +72.5 | +--------+--------+------------+------------+---------+ | | 360 | 0.45 | 1.59 | +253.3 | | 4 | 1024 | 1.34 | 5.48 | +308.9 | | | 1518 | 2.27 | 8.31 | +266.1 | +--------+--------+------------+------------+---------+ | | 360 | 0.40 | 1.61 | +302.5 | | 8 | 1024 | 1.64 | 4.24 | +158.5 | | | 1518 | 2.87 | 6.52 | +127.2 | +--------+--------+------------+------------+---------+ VF UDP TX +--------+--------+------------+------------+---------+ | | | Before | After | | | Number | | Patch | Patch | | | of | Packet | Throughput | Throughput | Percent | | Flows | Size | (Gbps) | (Gbps) | Change | +--------+--------+------------+------------+---------+ | | 360 | 1.28 | 1.49 | +16.4 | | 1 | 1024 | 4.44 | 4.39 | -1.1 | | | 1518 | 6.08 | 6.51 | +7.1 | +--------+--------+------------+------------+---------+ | | 360 | 2.35 | 2.35 | 0.0 | | 4 | 1024 | 6.41 | 8.07 | +25.9 | | | 1518 | 9.56 | 9.54 | -0.2 | +--------+--------+------------+------------+---------+ | | 360 | 3.41 | 3.65 | +7.0 | | 8 | 1024 | 9.35 | 9.34 | -0.1 | | | 1518 | 9.56 | 9.57 | +0.1 | +--------+--------+------------+------------+---------+ Signed-off-by: VSR Burru <veerasenareddy.burru@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: optimize reads from Octeon PCI consoleFelix Manlunas2016-12-301-7/+3Star
| | | | | | | | | | | | | Reads from Octeon PCI console are inefficient because before each read operation, a dynamic mapping to Octeon DRAM is set up. This patch replaces the repeated setup of a dynamic mapping with a one-time setup of a static mapping. Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio CN23XX: copyrights changes and alignmentRaghu Vatsavayi2016-11-161-21/+16Star
| | | | | | | | | | | Updated copyrights comments and also changed some other comments alignments. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio CN23XX: sysfs VF config supportRaghu Vatsavayi2016-11-161-0/+3
| | | | | | | | | | Adds sysfs based support for enabling or disabling VFs. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio CN23XX: HW config for VF supportRaghu Vatsavayi2016-11-161-0/+6
| | | | | | | | | | Adds support for configuring HW for creating VFs. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: CN23XX register setupRaghu Vatsavayi2016-08-311-0/+3
| | | | | | | | | | | Adds support for initializing cn23xx device registers related to mac, input/output and pf global config. Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: CN23XX queue definitionsRaghu Vatsavayi2016-08-311-8/+48
| | | | | | | | | | | Add support for cn23xx specific queue definitions and features. Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: Remove redundant codeRaghu Vatsavayi2016-07-051-2/+2
| | | | | | | | | | | This patch removes redundant file includes and conditions. Provides some meaningful comments and code alignment. Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* liquidio: soft command buffer limitsRaghu Vatsavayi2016-06-251-5/+7
| | | | | | | | | | | | | This patch increases the limits of soft command buffer size and num command buffers. This patch also has changes for queue macros and limit related changes for new chips. Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <rvatsavayi@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Add support of Cavium Liquidio ethernet adaptersRaghu Vatsavayi2015-06-111-0/+424
Following patch V8 adds support for Cavium Liquidio pci express based 10Gig ethernet adapters. 1) Consolidated all debug macros to either call dev_* or netdev_* macros directly, feedback from previous patch. 2) Changed soft commands to avoid crash when running in interrupt context. 3) Fixed link status not reflecting correct status when NetworkManager is running. Added MODULE_FIRMWARE declarations. Following were the previous patches. Patch V7: 1) Minor comments from v6 release regarding debug statements. 2) Fix for large multicast lists. 3) Fixed lockup issue if port initialization fails. 4) Enabled MSI by default. https://patchwork.ozlabs.org/patch/464441/ Patch V6: 1) Addressed the uint64 vs u64 issue, feedback from previous patch. 2) Consolidated some receive processing routines. 3) Removed link status polling method. https://patchwork.ozlabs.org/patch/459514/ Patch V5: Based on the feedback from earlier patches with regards to consolidation of common functions like device init, register programming for cn66xx and cn68xx devices. https://patchwork.ozlabs.org/patch/438979/ Patch V4: Following were the changes based on the feedback from earlier patch: 1) Added mmiowb while synchronizing queue updates and other hw interactions. 2) Statistics will now be incremented non-atomically per each ring. liquidio_get_stats will add stats of each ring while reporting the total statistics counts. 3) Modified liquidio_ioctl to return proper return codes. 4) Modified device naming to use standard Ethernet naming. 5) Global function names in the driver will have lio_/liquidio_/octeon_ prefix. 6) Ethtool related changes for: Removed redundant stats and jiffies. Use default ethtool handler of link status. Speed setting will make use of ethtool_cmd_speed_set. 7) Added checks for pci_map_* return codes. 8) Check for signals while waiting in interruptible mode https://patchwork.ozlabs.org/patch/435073/ Patch v3: Implemented feedback from previous patch like: Removed NAPI Config and DEBUG config options, added BQL and xmit_more support. https://patchwork.ozlabs.org/patch/422749/ Patch V2: Implemented feedback from previous patch. https://patchwork.ozlabs.org/patch/413539/ First Patch: https://patchwork.ozlabs.org/patch/412946/ Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: Robert Richter <Robert.Richter@caviumnetworks.com> Signed-off-by: Aleksey Makarov <Aleksey.Makarov@caviumnetworks.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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