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path: root/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
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2020-01-13net: stmmac: xgmac: Add TBS supportJose Abreu
Adds all the necessary HW hooks to support TBS feature in XGMAC cores. Changes from v1: - Remove unneeded LT shift as the IP already does this. Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2019-12-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
Mere overlapping changes in the conflicts here. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-18net: stmmac: xgmac3+: Add support for Frame PreemptionJose Abreu
Adds the HW specific support for Frame Preemption on XGMAC3+ cores. Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-18net: stmmac: Add basic EST support for XGMACJose Abreu
Adds the support for EST in XGMAC cores. This feature allows to offload scheduling of queues opening time to the IP. Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-18net: stmmac: Let TX and RX interrupts be independently enabled/disabledJose Abreu
By using this mechanism we can get rid of the not so nice method of scheduling TX NAPI when the RX was scheduled. No bandwidth reduction was seen with this change. Changes from v1: - Remove useless comment (Jakub) - Do not bind the TX clean to NAPI budget (Jakub) Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-18net: stmmac: xgmac: Clear previous RX buffer sizeJose Abreu
When switching between buffer sizes we need to clear the previous value. Fixes: d6ddfacd95c7 ("net: stmmac: Add DMA related callbacks for XGMAC2") Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-15net: stmmac: xgmac: Remove uneeded computation for RFA/RFDJose Abreu
RFA and RFD should not be dependent on FIFO size. In fact, the more FIFO space we have, the later we can activate Flow Control. Let's use hard-coded values for RFA and RFD for all FIFO sizes with the exception of 4k, which is a special case. Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
One conflict in the BPF samples Makefile, some fixes in 'net' whilst we were converting over to Makefile.target rules in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06net: stmmac: xgmac: Disable Flow Control when 1 or more queues are in AVJose Abreu
When in AVB mode we need to disable flow control to prevent MAC from pausing in TX side. Fixes: ec6ea8e3eee9 ("net: stmmac: Add CBS support in XGMAC2") Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06net: stmmac: xgmac: Fix AV Feature detectionJose Abreu
Fix incorrect precedence of operators. For reference: AV implies AV Feature but RAV implies only RX side AV Feature. As we want full AV features we need to check RAV. Fixes: c2b69474d63b ("net: stmmac: xgmac: Correct RAVSEL field interpretation") Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
2019-10-03net: stmmac: Only enable enhanced addressing mode when neededThierry Reding
Enhanced addressing mode is only required when more than 32 bits need to be addressed. Add a DMA configuration parameter to enable this mode only when needed. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-01net: stmmac: xgmac: Detect Hash Table size dinamicallyJose Abreu
Since commit b8ef7020d6e5 ("net: stmmac: add support for hash table size 128/256 in dwmac4"), we can detect the Hash Table dinamically. Let's implement this feature in XGMAC cores and fix possible setups that don't support the maximum size for Hash Table. Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: stmmac: xgmac: Correct RAVSEL field interpretationJose Abreu
RAVSEL means that only RX side is available for AVB features. As we use both TX and RX features we need to check if RAVSEL is selected and disable AVB if only RX side is available. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: stmmac: xgmac: Implement ARP OffloadJose Abreu
Implement the ARP Offload feature in XGMAC cores. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: stmmac: Implement L3/L4 Filters using TC FlowerJose Abreu
Implement filters for Layer 3 and Layer 4 using TC Flower API. Add the corresponding callbacks in XGMAC core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: stmmac: xgmac: Add RBU handling in DMA interruptJose Abreu
Add the handling of Receive Buffer Unavailable interrupt in the DMA handler of XGMAC cores. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17net: stmmac: Add support for VLAN Insertion OffloadJose Abreu
Adds the logic to insert a given VLAN ID in a packet. This is offloaded to HW and its descriptor based. For now, only XGMAC implements the necessary callbacks. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17net: stmmac: xgmac: Add EEE supportJose Abreu
Add support for EEE in XGMAC cores by implementing the necessary callbacks. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17net: stmmac: Add ethtool register dump for XGMAC coresJose Abreu
Add the ethtool interface to dump the register map in XGMAC cores. Changes from v2: - Remove uneeded memset (Jakub) Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17net: stmmac: Add Split Header support and enable it in XGMAC coresJose Abreu
Add the support for Split Header feature in the RX path and enable it in XGMAC cores. This does not impact neither beneficts bandwidth but it does reduces CPU usage because without the feature all the entire packet is memcpy'ed, while that with the feature only the header is. With Split Header disabled 'perf stat -d' gives: 86870.624945 task-clock (msec) # 0.429 CPUs utilized 1073352 context-switches # 0.012 M/sec 1 cpu-migrations # 0.000 K/sec 213 page-faults # 0.002 K/sec 327113872376 cycles # 3.766 GHz (62.53%) 56618161216 instructions # 0.17 insn per cycle (75.06%) 10742205071 branches # 123.658 M/sec (75.36%) 584309242 branch-misses # 5.44% of all branches (75.19%) 17594787965 L1-dcache-loads # 202.540 M/sec (74.88%) 4003773131 L1-dcache-load-misses # 22.76% of all L1-dcache hits (74.89%) 1313301468 LLC-loads # 15.118 M/sec (49.75%) 355906510 LLC-load-misses # 27.10% of all LL-cache hits (49.92%) With Split Header enabled 'perf stat -d' gives: 49324.456539 task-clock (msec) # 0.245 CPUs utilized 2542387 context-switches # 0.052 M/sec 1 cpu-migrations # 0.000 K/sec 213 page-faults # 0.004 K/sec 177092791469 cycles # 3.590 GHz (62.30%) 68555756017 instructions # 0.39 insn per cycle (75.16%) 12697019382 branches # 257.418 M/sec (74.81%) 442081897 branch-misses # 3.48% of all branches (74.79%) 20337958358 L1-dcache-loads # 412.330 M/sec (75.46%) 3820210140 L1-dcache-load-misses # 18.78% of all L1-dcache hits (75.35%) 1257719198 LLC-loads # 25.499 M/sec (49.73%) 685543923 LLC-load-misses # 54.51% of all LL-cache hits (49.86%) Changes from v2: - Reword commit message (Jakub) Changes from v1: - Add performance info (David) - Add misssing dma_sync_single_for_device() Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-08net: stmmac: Add Flexible RX Parser support in XGMACJose Abreu
XGMAC cores also support the Flexible RX Parser feature. Add the support for it in the XGMAC core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-08net: stmmac: Implement Safety Features in XGMAC coreJose Abreu
XGMAC also supports Safety Features. This patch implements the configuration and handling of this feature in XGMAC core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-08net: stmmac: Implement VLAN Hash Filtering in XGMACJose Abreu
Implement the VLAN Hash Filtering feature in XGMAC core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-08net: stmmac: Implement RSS and enable it in XGMAC coreJose Abreu
Implement the RSS functionality and add the corresponding callbacks in XGMAC core. Changes from v1: - Do not use magic constants (Jakub) - Use ethtool_rxfh_indir_default() (Jakub) Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-08net: stmmac: xgmac: Implement MMC countersJose Abreu
Implement the MMC counters feature in XGMAC core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-09net: stmmac: Fix descriptors address being in > 32 bits address spaceJose Abreu
Commit a993db88d17d ("net: stmmac: Enable support for > 32 Bits addressing in XGMAC"), introduced support for > 32 bits addressing in XGMAC but the conversion of descriptors to dma_addr_t was left out. As some devices assing coherent memory in regions > 32 bits we need to set lower and upper value of descriptors address when initializing DMA channels. Luckly, this was working for me because I was assigning CMA to < 4GB address space for performance reasons. Fixes: a993db88d17d ("net: stmmac: Enable support for > 32 Bits addressing in XGMAC") Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-28net: stmmac: Enable support for > 32 Bits addressing in XGMACJose Abreu
Currently, stmmac only supports 32 bits addressing for SKB. Enable the support for upto 48 bits addressing in XGMAC core. This avoids the use of bounce buffers and increases performance. Changes from v1: - Fallback to 32 bits in failure (Andrew) Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-28net: stmmac: dwxgmac: Fix the undefined burst settingJose Abreu
Undefined burst shall only be set if pdata asks to. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-28net: stmmac: dwxgmac: Enable EDMA by defaultJose Abreu
Enable the EDMA feature by default which gives higher performance. Changes from v1: - Do not use magic values (David) Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-24net: stmmac: dwxgmac2: Do not disable whole RX in dma_stop_rx()Jose Abreu
We don't need to disable the whole RX when dma_stop_rx() is called because there may be the need of just disabling 1 DMA channel. This is also needed for stmmac Flow Control selftest. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-17net: stmmac: dwxgmac: Finish the Flow Control implementationJose Abreu
Finish the implementation of Flow Control feature. In order for it to work correctly we need to set EHFC bit and the correct threshold values for activating and deactivating it. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-21net: stmmac: dwxgmac2: Also use TBU interrupt to clean TX pathJose Abreu
TBU interrupt is a normal interrupt and can be used to trigger the cleaning of TX path. Lets check if it's active in DMA interrupt handler. While at it, refactor a little bit the function: - Don't check if RI is enabled because at function exit we will only clear the interrupts that are enabled so, no event will be missed. In my tests withe XGMAC2 this increased performance. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-11net: stmmac: dwxgmac2: Only clear interrupts that are activeJose Abreu
In DMA interrupt handler we were clearing all interrupts status, even the ones that were not active. Fix this and only clear the active interrupts. Cc: Joao Pinto <jpinto@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-01net: stmmac: Add CBS support in XGMAC2Jose Abreu
XGMAC2 uses the same CBS mechanism as GMAC5, only registers offset changes. Lets use the same TC callbacks and implement the .config_cbs callback in XGMAC2 core. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: stmmac: Add DMA related callbacks for XGMAC2Jose Abreu
Add the DMA related callbacks for the new IP block XGMAC2. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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