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path: root/drivers/net
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2013-08-30sfc: Update copyright bannersBen Hutchings34-62/+62
Update the dates for files that have been added to in 2012-2013. Drop the 'Solarstorm' brand name that's still lingering here. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Add support for Solarflare SFC9100 familyBen Hutchings12-22/+3260
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>
2013-08-29sfc: Make efx_mcdi_{init,fini}() call efx_mcdi_drv_attach()Ben Hutchings3-26/+34
This should be done during MCDI initialisation for any NIC. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Allocate NVRAM partition ID range for PHY imagesMatthew Slattery1-0/+4
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Add EF10 register and structure definitionsBen Hutchings2-5/+430
Also update comments and assertions in io.h: - EF10 does not have a general BIU collector and does not have the bug affecting TIMER_COMMAND_REG[0] on Falcon/Siena - The WPTR field moved within RX_DESC_UPD_REG and TX_DESC_UPD_REG. Adjust efx_writed_page() accordingly Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Extend struct efx_tx_buffer to allow pushing option descriptorsBen Hutchings3-2/+11
The TX path firmware for EF10 supports 'option descriptors' to control offloads and various other features. Add a flag and field for these in struct efx_tx_buffer, and don't treat them as DMA descriptors on completion. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Use a global count of active queues instead of pending drainsAlexandre Rames3-13/+14
On EF10, the firmware will initiate a queue flush in certain error cases. We need to accept that flush events might appear at any time after a queue has been initialised, not just when we try to flush them. We can handle Falcon-architecture in just the same way. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Prepare for RX scatter on EF10Jon Cooper3-8/+12
RX DMA scatter is always enabled on EF10. Adjust the common RX completion handling to allow for this. RX completion events on EF10 include the length used from a single descriptor, not the cumulative length used. Add a field to struct efx_rx_queue to hold the cumulative length. [bwh: Also fix a related comment] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Initialise IRQ moderation for all NIC types from efx_init_eventq()Ben Hutchings2-3/+3
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Allow efx_nic_type::dimension_resources to failBen Hutchings4-6/+12
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Allow event queue initialisation to failJon Cooper4-28/+95
On EF10, event queue initialisation requires an MCDI request which may return failure. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Document conditions for multicast replication vs filter replacementBen Hutchings2-7/+49
Add the efx_filter_is_mc_recip() function to decide whether a filter is for a multicast recipient and can coexist with other filters with the same match values. Update efx_filter_insert_filter() kernel-doc to explain the conditions for this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Implement asynchronous MCDI requestsBen Hutchings3-30/+291
This will allow use of MCDI from the data path, in particular for accelerated RFS. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Remove unnecessary use of atomic_tBen Hutchings2-17/+13
We can set, get and compare-and-exchange without using atomic_t. Change efx_mcdi_iface::state to the enum type we really wanted it to be. Suggested-by: David Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Refactor efx_mcdi_rpc_start() and efx_mcdi_copyin()Ben Hutchings1-19/+30
Preparation for asynchronous MCDI requests. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-29sfc: Add support for new board sensorsBen Hutchings1-30/+91
Add support for power and current sensors, which need to be named differently in sysfs. Power sensors also require values to be scaled between MCDI and sysfs, and have no minimum value. Add definitions of the power, current, fan, and additional temperature and voltage sensors found on SFA6902F, SFN7022F and SFN7122F. (Includes a bug fix from Andrew Jackson.) Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Use extended MC_CMD_SENSOR_INFO and MC_CMD_READ_SENSORSBen Hutchings1-44/+95
We need to use extended requests to read and get metadata for sensors numbered > 31. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Return an error code when a sensor is busy.Alexandre Rames1-1/+6
[bwh: Also name this new state, though we don't expect to see it in an event] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Add support for reading packet length from prefixBen Hutchings2-2/+14
Define a flag for struct efx_rx_buffer and efx_rx_packet() that indicates packet length must be read from the prefix. If this is set, read the length in __efx_rx_packet() (when the prefix should have arrived in cache). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Add TX merged completion counterBen Hutchings3-0/+6
Add a counter for TX merged completion events. This is implemented in the common TX path, because the NIC event handlers only know how many descriptors were completed, not how many packets. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Generalise packet hash lookup to support EF10 RX prefixJon Cooper6-13/+28
EF10 uses an entirely different RX prefix format from Falcon-arch. Extend struct efx_nic_type to describe this. [bwh: Also replace the magic numbers used for the Falcon-arch RX prefix] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Rename EFX_PAGE_BLOCK_SIZE to EFX_VI_PAGE_SIZE and adjust commentsBen Hutchings1-4/+4
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Remove early call to efx_nic_type::reconfigure_mac in efx_reset_up()Ben Hutchings1-2/+0
efx_reset_up() calls efx_nic_type::reconfigure_mac once directly, then again through efx_start_all() -> efx_start_port() -> efx->type->reconfigure_mac(). This first call is also made too early to work properly on EF10. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: use MCDI epoch flag to improve MC reboot detection in the driverDaniel Pieczko2-6/+15
The Huntington MC will reject all MCDI requests after an MC reboot until it sees one with the NOT_EPOCH flag clear. This flag is set by default for all requests, and then cleared on the first request after we detect that an MC reboot has occurred. The old MCDI_STATUS_DELAY_COUNT gave a timeout of 10ms, which was not long enough for the driver to detect that a reboot had occurred based on the warm boot count while calling efx_mcdi_poll_reboot() from the loop in efx_mcdi_ev_death(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Add EF10 support for TX/RX DMA error events handling.Alexandre Rames5-11/+15
Also, since we handle all DMA errors in the same way, merge RESET_TYPE_(RX|TX)_DESC_FETCH into RESET_TYPE_DMA_ERROR. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Add a function pointer to abstract write of host time into NIC shared ↵Laurence Evans3-2/+16
memory Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: PTP MCDI requests need to initialise periph ID fieldLaurence Evans1-0/+7
This field is ignored by Siena firmware but is significant to EF10 firmware. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Delegate MAC/NIC statistic description to efx_nic_typeBen Hutchings8-389/+498
Various hardware statistics that are available for Siena are unavailable or meaningless for Falcon. Huntington adds further to the NIC-type-specific statistics, as it has different MAC blocks from Falcon/Siena. All NIC types still provide most statistics by DMA, and use little-endian byte order. Therefore: 1. Add some general utility functions for reporting hardware statistics, efx_nic_describe_stats() and efx_nic_update_stats(). 2. Add an efx_nic_type::describe_stats operation to get the number and names of statistics, implemented using efx_nic_describe_stats() 3. Change efx_nic_type::update_stats to store the core statistics (struct rtnl_link_stats64) or full statistics (array of u64) in a caller-provided buffer. Use efx_nic_update_stats() to aid in the implementation. 4. Rename struct efx_ethtool_stat to struct efx_sw_stat_desc and EFX_ETHTOOL_NUM_STATS to EFX_ETHTOOL_SW_STAT_COUNT. 5. Remove efx_nic::mac_stats and struct efx_mac_stats. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Remove driver-local struct ethtool_stringBen Hutchings1-24/+13
It's not really helpful to pretend ethtool string arrays are structured. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Remove more left-overs from Falcon GMAC supportBen Hutchings3-18/+6
We only ever used the XMAC (10G link speed) in production. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-28sfc: Move MTD operations into efx_nic_typeBen Hutchings9-831/+807
Merge the per-NIC-type MTD probe selection and struct efx_mtd_ops into struct efx_nic_type. Move the implementations into the appropriate source files. Several NVRAM functions are now only called from MTD operations which are now implemented in the same file (falcon.c or mcdi.c). There is no need for them to be extern, or to be defined at all if CONFIG_SFC_MTD is not enabled, so move them into the #ifdef CONFIG_SFC_MTD sections in those files. Most of the SPI-related definitions are also only used in falcon.c, so move them there. Put the remainder of spi.h into nic.h (which previously included it). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Move NIC-type-specific MTD partition date into separate structuresBen Hutchings1-85/+112
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Eliminate struct efx_mtdBen Hutchings2-160/+120
Currently we use struct efx_mtd to represent a physical NVRAM device and struct efx_mtd_partition to represent a partition on that device. But this only really makes sense for Falcon, as we don't know or care whether MC-managed NVRAM partitions are on one or more physical devices. It complicates iteration and provides little benefit. Therefore: - Replace the pointer to efx_mtd in mtd_info::priv with a pointer to efx_nic - Move the falcon_spi_device pointer into the union in struct efx_mtd_partition - Move the device name to efx_mtd_partition::dev_type_name - Move the efx_mtd_ops pointer to efx_nic::mtd_ops - Make efx_nic::mtd_list a list of partitions Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Rename SPI stuff to show that it is Falcon-specificBen Hutchings4-47/+47
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Cleanup Falcon-arch simple MAC filter stateBen Hutchings7-44/+52
On Falcon we implement MAC filtering requested by the stack using the MAC wrapper's single unicast filter and multicast hash filter. Siena is very similar, though MAC configuration is mediated by the MC. Since MCDI operations may sleep, reconfiguration is deferred from ndo_set_rx_mode to a work item. However, it still updates the private variables describing the filter state synchronously. Contrary to comments, the later use of these variables is not protected using the address lock, resulting in race conditions. Move the state update to a new function efx_farch_filter_sync_rx_mode() and make the Falcon-arch MAC configuration functions call that, so that its use is consistently serialised by the mac_lock. Invert and rename the promiscuous flag to the more accurate unicast_filter, and comment that both this and multicast_hash are not used on EF10. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Define and use MCDI_POPULATE_DWORD_{1,2,3,4,5,6,7}Ben Hutchings2-10/+62
There is only one user now, but we're about to add many more. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Add flag for stack-owned RX MAC filtersBen Hutchings2-17/+37
MAC filters inserted on request from the stack (ndo_set_rx_mode) should allow manual steering but not removal. Currently we have a special case for Siena's all-multicast and all-unicast MAC filters, but on EF10 we need to allow for steering of precise MAC filters as well. The EFX_FILTER_FLAG_RX_STACK flag changes the behaviour of replacement and removal requests: - Replacement *of* a filter with this flag never clears the flag but does change steering and saved priority - Replacement *by* a filter with this flag only sets the flag but does not change steering - Removal with priority < EFX_FILTER_PRI_REQUIRED really resets RX steering and saved priority This could support precise MAC filtering on Siena in future. As a side-benefit, the default MAC filters are hidden from ethtool until they are steered. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Refactor Falcon-arch filter removalBen Hutchings1-34/+40
Move the special case for removal of default filters from efx_farch_filter_table_clear_entry() into a wrapper function, efx_farch_filter_table_remove(). Move the existence and priority checks into the latter and use it where appropriate. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Make most filter operations NIC-type-specificBen Hutchings10-1267/+1448
Aside from accelerated RFS, there is almost nothing that can be shared between the filter table implementations for the Falcon architecture and EF10. Move the few shared functions into efx.c and rx.c and the rest into farch.c. Introduce efx_nic_type operations for the implementation and inline wrapper functions that call these. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Refactor Falcon-arch search limit resetBen Hutchings1-29/+30
Currently every call to efx_farch_filter_table_clear_entry() is shortly followed by a conditional reset of the table limits. The new limits (0) are not pushed to hardware until the next filter insertion. Move both the reset and the hardware reconfiguration into efx_farch_filter_table_clear_entry(), and add an explanatory comment. Also, make consistent use of the term 'search limit' for the maximum number of probes the NIC must make when searching for a filter of a particular type. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Split Falcon-arch-specific and common filter stateBen Hutchings2-55/+58
Move the common state from struct efx_filter_state into struct efx_nic. Rename struct efx_filter_state to efx_farch_filter_state and change the type of efx_nic::filter_state to void *. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Extend and abstract efx_filter_spec to cover Huntington/EF10Ben Hutchings3-392/+494
Replace type field with match_flags. Add rss_context and match values covering of most of what is now in the MCDI protocol. Change some fields into bitfields so that the structure size doesn't grow beyond 64 bytes. Ditch the filter decoding functions as it is now easier to pick apart the abstract structure. Rewrite ethtool NFC rule functions to set/get filter match flags and values directly. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Name the RX drop queue IDBen Hutchings2-3/+8
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Rename Falcon-arch filter implementation types and functionsBen Hutchings1-209/+243
The filter table(s) on EF10 are managed by firmware and will need almost entirely separate code. Rename the types and functions used within the existing implementation. The current definition of struct efx_filter_spec is really implementation-specific, so we need to keep it. For now, define a separate structure for the internal representation but leave them identical. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-22sfc: Remove unused filter_flags variables and efx_farch_filter_id_flags()Ben Hutchings1-16/+0
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-21sfc: Do not assume efx_nic_type::ev_fini is idempotentBen Hutchings2-0/+7
efx_fini_eventq() needs to be idempotent but EF10 firmware is picky about queue states. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-21sfc: EFX_WORKAROUND_ALWAYS is really specific to Falcon-architectureBen Hutchings3-36/+19
The workarounds that currently use EFX_WORKAROUND_ALWAYS are in Falcon-specific or Falcon-arch-specific code, so get rid of the conditions altogether. Add/move comments as appropriate. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-21sfc: Get rid of per-NIC-type phys_addr_channels and mem_map_sizeBen Hutchings4-32/+37
EF10 functions don't have a fixed BAR size, and the minimum is not large enough for all the queues we might want to allocate. We have to find out the BAR size at run-time, and therefore phys_addr_channels and mem_map_size cannot be defined per-NIC-type. Change efx_nic_type::mem_map_size to a function pointer which is called to find the wanted memory map size (before probe). Replace efx_nic_type::phys_addr_channels with efx_nic::max_channels, to be initialised by the probe function. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-21sfc: Update and improve kernel-doc for efx_mcdi_state & efx_mcdi_ifaceBen Hutchings1-11/+9
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-08-21sfc: Fix race in completion handlingBen Hutchings1-15/+10
When we poll for MCDI request completion, we don't hold the interface lock while setting the response fields in struct efx_mcdi_iface. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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