CC: Solarflare linux maintainers <linux-net-drivers@solarflare.com>
CC: Shradha Shah <sshah@solarflare.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Add a set_mac_address() NIC-type function for EF10 only, and
use this to set the MAC address on the vadaptor. For Siena and
earlier, the MAC address continues to be set by MC_CMD_SET_MAC;
this is still called on EF10, and including a MAC address in
this command has no effect.
The sriov_mac_address_changed() NIC-type function is no longer
needed on EF10, but it is needed for Siena where it is used to
update the peer address of the PF for VFDI. Change this to use
the new set_mac_address function pointer.
efx_ef10_sriov_mac_address_changed() is no longer called, as VFs
will try to change the MAC address on their vadaptor rather than
trying to change to the context of the PF to alter the vport.
When a VF is running in direct passthrough mode with MAC spoofing
enabled, it will be able to change the MAC address on its vadaptor.
In this case, there is a link to the PF, so find the correct VF in
its ef10_vf array and update the MAC address.
ndo_set_mac_address() can be called during driver unload while
bonding, and in this case the device has already been stopped, so
don't call efx_net_open() to restart it after reconfiguration.
efx->port_enabled is set to false in efx_stop_port(), so it is
indicator of whether the device needs to be restarted.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the device ID of the VF to the PCI device ID table.
Added a boolean flag is_vf in efx_nic_type to differentiate
between a VF and PF at probe time. This flag is useful in later
patches while setting MAC address specially in the
PCI-passthrough case.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow PFs to allocate shared RSS contexts if we exhaust our
exclusive RSS contexts. Make VFs use shared RSS contexts in
all cases.
Spruce up error handling so that the shadow copy of the RSS
table is updated after successful update, rather than in all
cases, so that we report the actual contents of the RSS table
after a failure to set it, rather than what we'd like it to be.
Populate context_size parameter when vacuously allocating RSS
context of size 1.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added efx_nic_type structure for VF.
Mapped a different BAR for VF as it uses BAR 0 for memory.
Added functions sriov_init and sriov_fini.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adds functions to allocate and free vswitches and vports; vadaptors
are automatically allocated and freed when TX/RX queues are
initialised and finalised. This vswitching structure is only created
if the firmware supports it, so a check that full-featured firmware
is running is performed first.
If the MC resets, the vswitching infrastructure will need to be
recreated, so mark the "must_probe_vswitching" flag when an MC reboot
is detected.
Don't try to create a vswitch if vf-count=0
This allocation of vswitches and vports does not currently support
configuring VLAN tags, but that can be added in a future change.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for the use of sriov_configure on EF10
to enable Virtual Functions while the driver is loaded.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
By putting all the efx_{siena,ef10}_sriov_* declarations in
{siena,ef10}_sriov.h, ensure they cannot be called from nic-generic code.
Also fixes up an instance of this, where mcdi.c was calling
efx_siena_sriov_flr.
The single instance of netdev_ops should call general high level
functions that can then call something adapter specific in efx_nic_type.
We should only do adapter specialisation via efx_nic_type.
Removal of sriov functionality from the Falcon code means that tests
are needed for the presence of some callbacks.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is deprecated, it forces the driver to hop via the OF node
that may or may not exist, instead use pci_dev_to_eeh_dev() which
is simpler.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Shradha Shah <sshah@solarflare.com>
Also add dummy functions where required to avoid NULL pointer dereference.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patch in preparation for the upcoming EF10 sriov support.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch series provides a base and cleanup for the
upcoming EF10 SRIOV support.
This patch moves the VF state into siena_nic_data as a basis to
save the VF state based on nic type.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added a counter rx_noskb_drop for failure to allocate an skb.
Summed the per-channel rx_nodesc_trunc counters earlier so that they can
be included in rx_dropped.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When an MCDI command times out (whether or not we find it
completed when we poll), call efx_mcdi_abandon(), which tells
all subsequent MCDI calls to fail-fast, and queues up an FLR.
Because an FLR doesn't lead to receiving any reboot even from
the MC (unlike most other types of reset), we have to call
efx_ef10_reset_mc_allocations.
In efx_start_all(), if a reset (of any kind) is pending, we
bail out.
Without this, attempts to reconfigure (e.g. change mtu) can
cause driver/mc state inconsistency if the first MCDI call
triggers an FLR.
For similar reasons, on EF10, in
efx_reset_down(method=RESET_TYPE_MCDI_TIMEOUT), set the number
of active queues to zero before calling efx_stop_all().
And, on farch, in efx_reset_up(method=RESET_TYPE_MCDI_TIMEOUT),
set active_queues and flushes pending & outstanding to zero.
efx_mcdi_mode_{poll,event}() should not take us out of fail-fast
mode. Instead, this is done by efx_mcdi_reset() after the FLR
completes.
The new FLR reset_type RESET_TYPE_MCDI_TIMEOUT doesn't really
fit into the hierarchy of reset 'scopes' whereby efx_reset()
decides some resets subsume others. Thus, it uses separate logic.
Also, fixed up some inconsistency around RESET_TYPE_MC_BIST,
which was in the wrong place in that hierarchy.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The EF10 implementation already does this, and it makes more logical
sense to group the RSS hash key and indirection table together.
Rename the operation to rx_push_rss_config.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
I added efx_ptp_get_mode() to avoid moving the definition for
efx_ptp_data, since the current PTP mode is needed for
siena.c:siena_set_ptp_hwtstamp.
[bwh: Also move the rx_filters mask, and add kernel-doc]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
We need a dedicated channel on Siena to ensure we can match up
the separate RX and timestamp events for each PTP packet. We won't
do this for EF10 as timestamps are delivered inline.
Pass a channel index of 0 to MC_CMD_PTP_OP_ENABLE when there is no
dedicated channel.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
We don't directly control RX ingress on Siena or any later
controllers, and so we cannot prevent packets from entering the RX
datapath while the RX queues are not set up. This results in
the hardware incrementing RX_NODESC_DROP_CNT, but it's not an
error and we should not include it in error stats.
When bringing an interface up or down, pull (or wait for) stats and
count the number of packets that were dropped while the interface was
down. Subtract this from the reported RX dropped count.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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>
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>
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>
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>
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>
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>
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>
MCDI v2 adds a second header dword with wider command and length
fields. It also defines extra error codes.
Change the fallback error number for unknown MCDI error codes from EIO
to EPROTO. EIO is treated as indicating the MCDI transport has failed
and we need to reset the function, which is rather drastic.
v2 error codes and lengths don't fit into completion events, so for a
v2-capable transport, always read the response header rather then
using the event fields.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Add efx_nic_type operations for the many efx_nic functions that need
to be implemented different on EF10. For now, change most of the
existing efx_nic_*() functions into inline wrappers. As a later step,
we may be able to improve branch prediction for operations used on the
fast path by copying the pointers into each queue/channel structure.
Move the Falcon/Siena implementations to new file farch.c and rename
the functions and static data to use a prefix of 'efx_farch_'.
Move efx_may_push_tx_desc() to nic.h, as the EF10 TX code will also
use it.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Currently efx_stop_datapath() will try to flush our DMA queues (if DMA
is enabled), then finalise software and hardware state for each queue.
However, for EF10 we must ask the MC to finalise each queue, which
implicitly starts flushing it, and then wait for the flush events.
We therefore need to delegate more of this to the NIC type.
Combine all the hardware operations into a new NIC-type operation
efx_nic_type::fini_dmaq, and call this before tearing down the
software state and buffers for all the DMA queues.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The EF10 architecture has a very different register layout from
previous controllers, so we'll use separate files for the two sets of
register definitions. Use 'farch' as an abbreviation for
Falcon-architecture.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Most call sites for efx_nic_alloc_buffer() are part of the probe or
reconfiguration paths and can allocate with GFP_KERNEL. A few others
should use GFP_NOIO (I think). Only one is in atomic context and
must use the current GFP_ATOMIC.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Move the lowest layer (transport) of the current MCDI code to
per-NIC-type operations.
Introduce a new structure and efx_nic member for MCDI-specific data.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This should probably be done during MCDI initialisation for any NIC.
Change efx_mcdi_init() to return an error code.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Collect together MCDI port functions from mcdi.c, mcdi_mac.c,
mcdi_phy.c and siena.c. Rename the 'siena' functions accordingly.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
We should not use net_device::dev_id to indicate the port number, as
this affects the way the local part of IPv6 addresses is normally
generated.
This field was intended for use where multiple devices may share a
single assigned MAC address and need to have different IPv6 addresses.
Siena's two ports each have their own MAC addresses.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable RX DMA scattering iff an RX buffer large enough for the current
MTU will not fit into a single page and the NIC supports DMA
scattering for kernel-mode RX queues.
On Falcon and Siena, the RX_USR_BUF_SIZE field is used as the DMA
limit for both all RX queues with scatter enabled. Set it to 1824,
matching what Onload uses now.
Maintain a statistic for frames truncated due to lack of descriptors
(rx_nodesc_trunc). This is distinct from rx_frm_trunc which may be
incremented when scattering is disabled and implies an over-length
frame.
Whenever an MTU change causes scattering to be turned on or off,
update filters that point to the PF queues, but leave others
unchanged, as VF drivers assume scattering is off.
Add n_frags parameters to various functions, and make them iterate:
- efx_rx_packet()
- efx_recycle_rx_buffers()
- efx_rx_mk_skb()
- efx_rx_deliver()
Make efx_handle_rx_event() responsible for updating
efx_rx_queue::removed_count.
Change the RX pipeline state to a starting ring index and number of
fragments, and make __efx_rx_packet() responsible for clearing it.
Based on earlier versions by David Riddoch and Jon Cooper.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The Linux side of EEH is triggered by MMIO reads, but this
driver's data path does not issue any MMIO reads (except in
legacy interrupt mode). Therefore add a monitor function
to poll EEH periodically.
When preparing to reset the device based on our own error
detection, also poll EEH and defer to its recovery mechanism
if appropriate.
[bwh: Use a separate condition for the initial link poll; fix some
style errors]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Receiving pause frames can block TX queue flushes. Earlier changes
work around this by reconfiguring the MAC during flushes for VFs, but
during flushes for the PF we would only change the fc_disable counter.
Unless the MAC is reconfigured for some other reason during the flush
(which I would not expect to happen) this had no effect at all.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Add PTP IEEE-1588 support and make accesible via the PHC subsystem.
This work is based on prior code by Andrew Jackson
Signed-off-by: Stuart Hodgson <smhodgson@solarflare.com>
[bwh:
- Add byte order conversion in efx_ptp_send_times()
- Simplify conversion of PPS event times
- Add the built-in vs module check to CONFIG_SFC_PTP dependencies]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Some interface statistics are computed in such a way that they can
sometimes decrease (and even underflow). Since the computed value
will never be greater than the true value, we fix this by only storing
the computed value when it increases.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Currently VF queues and drivers may remain active during this test.
This could cause memory corruption or spurious test failures.
Therefore we reset the port/function before running these tests on
Siena.
On Falcon this doesn't work: we have to do some additional
initialisation before some blocks will work again. So refactor the
reset/register-test sequence into an efx_nic_type method so
efx_selftest() doesn't have to consider such quirks.
In the process, fix another minor bug: Siena does not have an
'invisible' reset and the self-test currently fails to push the PHY
configuration after resetting. Passing RESET_TYPE_ALL to
efx_reset_{down,up}() fixes this.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
On the SFC9000 family, each port has 1024 Virtual Interfaces (VIs),
each with an RX queue, a TX queue, an event queue and a mailbox
register. These may be assigned to up to 127 SR-IOV virtual functions
per port, with up to 64 VIs per VF.
We allocate an extra channel (IRQ and event queue only) to receive
requests from VF drivers.
There is a per-port limit of 4 concurrent RX queue flushes, and queue
flushes may be initiated by the MC in response to a Function Level
Reset (FLR) of a VF. Therefore, when SR-IOV is in use, we submit all
flush requests via the MC.
The RSS indirection table is shared with VFs, so the number of RX
queues used in the PF is limited to the number of VIs per VF.
This is almost entirely the work of Steve Hodgson, formerly
shodgson@solarflare.com.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Each port has a block of 64-bit SRAM that is divided between buffer
table and descriptor cache regions at initialisation time. Currently
we use a fixed allocation, but it needs to be changed to support
larger numbers of queues.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
The SFC9000-family controllers have firmware to manage all board
peripherals including temperature, heat sink continuity and voltage
sensors. The firmware reports sensor alarms, which we log, and
will shut down the board if necessary.
Some users may want to monitor their boards more closely, so add an
hwmon driver that exposes all sensors reported by the firmware. Move
efx_mcdi_sensor_event() into the new file so it can share the array of
sensor labels with the hwmon driver.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
