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path: root/drivers/net/ethernet/sfc/ef10.c
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* sfc: Make initial fill of RX descriptors synchronousJon Cooper2013-12-121-1/+1
| | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Tighten the check for RX merged completion eventsBen Hutchings2013-12-121-4/+9
| | | | | | | | | | | | | The addition of RX event merging support means we don't reliably detect dropped RX events now. Currently we will only detect them if the previous event for the RX queue had the CONT bit set. Only accept RX completion events as merged if the GET_CAPABILITIES_OUT_RX_BATCHING bit is set in datapath_caps (which it won't be for the low-latency datapath) and the CONT bit is not set on the event. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Add MC BISTs to ethtool offline self test on EF10Jon Cooper2013-12-121-1/+83
| | | | | | | | | | | | | | To run BISTs the MC goes down in to a special mode where it will only respond to MCDI from the testing PF, and TX, RX and event queues are torn down. Other PFs get a message as it goes down to tell them it's going down. When the other PFs get this message, they check the soft status register to tell when the MC has rebooted after BIST mode and they can start recovery. [bwh: Convert the test result to 1 or -1 as for earlier NICs] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-10-081-22/+65
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: include/linux/netdevice.h net/core/sock.c Trivial merge issues. Removal of "extern" for functions declaration in netdevice.h at the same time "const" was added to an argument. Two parallel line additions in net/core/sock.c Signed-off-by: David S. Miller <davem@davemloft.net>
| * sfc: Add PM and RXDP drop counters to ethtool statsEdward Cree2013-10-041-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recognise the new Packet Memory and RX Data Path counters. The following counters are added: rx_pm_{trunc,discard}_bb_overflow - burst buffer overflowed. This should not occur if BB correctly configured. rx_pm_{trunc,discard}_vfifo_full - not enough space in packet memory. May indicate RX performance problems. rx_pm_{trunc,discard}_qbb - dropped by 802.1Qbb early discard mechanism. Since Qbb is not supported at present, this should not occur. rx_pm_discard_mapping - 802.1p priority configured to be dropped. This should not occur in normal operation. rx_dp_q_disabled_packets - packet was to be delivered to a queue but queue is disabled. May indicate misconfiguration by the driver. rx_dp_di_dropped_packets - parser-dispatcher indicated that a packet should be dropped. rx_dp_streaming_packets - packet was sent to the RXDP streaming bus, ie. a filter directed the packet to the MCPU. rx_dp_emerg_{fetch,wait} - RX datapath had to wait for descriptors to be loaded. Indicates performance problems but not drops. These are only provided if the MC firmware has the PM_AND_RXDP_COUNTERS capability. Otherwise, mask them out. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
| * sfc: Refactor EF10 stat mask code to allow for more conditional statsEdward Cree2013-10-041-21/+28
| | | | | | | | | | | | | | | | | | | | | | | | Previously, efx_ef10_stat_mask returned a static const unsigned long[], which meant that each possible mask had to be declared statically with STAT_MASK_BITMAP. Since adding a condition would double the size of the decision tree, we now create the bitmask dynamically. To do this, we have two functions efx_ef10_raw_stat_mask, which returns a u64, and efx_ef10_get_stat_mask, which fills in an unsigned long * argument. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
| * sfc: Add rmb() between reading stats and generation count to ensure consistencyJon Cooper2013-10-041-0/+1
| | | | | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* | sfc: Allocate and link PIO buffers; map them with write-combiningBen Hutchings2013-09-201-3/+314
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Try to allocate a segment of PIO buffer to each TX channel. If allocation fails, log an error but continue. PIO buffers must be mapped separately from the NIC registers, with write-combining enabled. Where the host page size is 4K, we could potentially map each VI's registers and PIO buffer separately. However, this would add significant complexity, and we also need to support architectures such as POWER which have a greater page size. So make a single contiguous write-combining mapping after the uncacheable mapping, aligned to the host page size, and link PIO buffers there. Where necessary, allocate additional VIs within the write-combining mapping purely for access to PIO buffers. Link all TX buffers to TX queues and the additional VIs in efx_ef10_dimension_resources() and in efx_ef10_init_nic() after an MC reboot. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* | sfc: efx_ef10_filter_update_rx_scatter() can be staticFengguang Wu2013-09-201-1/+1
|/ | | | | Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Reinitialise and re-validate datapath caps after MC rebootBen Hutchings2013-09-111-0/+10
| | | | | | | | | After an MC reboot, the datapath may be running a different firmware variant and have different capabilities. It is critical that we know the current capabilities so that we can pass valid flags to MC_CMD_INIT_EVQ. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Clean up validation of datapath capabilitiesBen Hutchings2013-09-111-19/+22
| | | | | | | | | | | | | | Rename efx_ef10_init_capabilities() to the more specific efx_ef10_init_datapath_caps(). Stop accepting short responses to MC_CMD_GET_CAPABILITIES; we don't need to support pre-production firmware. Move the check for RX prefix support from efx_ef10_probe() into efx_ef10_init_datapath_caps() and use consistent error messages for missing TSO support and missing RX prefix support. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Reset derived rx_bad_bytes statistic when EF10 MC is rebootedBen Hutchings2013-09-111-0/+5
| | | | | | | | | | | If the MC reboots then the stats it reports to us will have been reset. We need to reset ours to get efx_update_diff_stat() working properly. (This is a re-run of commit 876be083b669 'sfc: Reset driver's MAC stats after MC reboot seen'.) Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Disable PTP on EF10 until we're ready to handle inline RX timestampsBen Hutchings2013-09-111-2/+0
| | | | | | | | | | | | | Unlike Siena where timestamping is provided by a peripheral, EF10 delivers RX timestamps in the packet prefix. However the driver doesn't yet support this. We are also creating a PHC device for each EF10 function, even though the clock is really shared between all of them. Disable hardware PTP/timestamping support until it's complete. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Add support for Solarflare SFC9100 familyBen Hutchings2013-08-291-0/+3043
This adds support for the EF10 network controller architecture and the SFC9100 family, starting with SFC9120 'Farmingdale', and bumps the driver version to 4.0. New features in the SFC9100 family include: - Flexible allocation of internal resources to PCIe physical and virtual functions under firmware control - RX event merging to reduce DMA writes at high packet rates - Integrated RX timestamping - PIO buffers for lower TX latency - Firmware-driven data path that supports additional offload features and filter types - Delivery of packets between functions and to multiple recipients, allowing firmware to implement a vswitch - Multiple RX flow hash (RSS) contexts with their own hash keys and indirection tables - 40G MAC (single port only) ...not all of which are enabled in this initial driver or the initial firmware release. Much of the new code is by Jon Cooper. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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