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path: root/drivers/net/ethernet/pensando/ionic/ionic_dev.h (follow)
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2021-10-02ionic: remove debug statsShannon Nelson1-4/+0
These debug stats are not really useful, their collection is likely detrimental to performance, and they suck up a lot of memory which never gets used if no one ever enables the priv-flag to print them, so just remove these bits. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27ionic: remove unneeded comp union fieldsShannon Nelson1-2/+0
We don't use these fields, so remove them from the definition. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27ionic: monitor fw status generationShannon Nelson1-0/+1
The top 4 bits of the fw_status in dev_info_regs is reserved for the status generation. This generation number is an arbitrary value defined when firmware starts up. If the FW is killed/crashed/stopped and then restarted, it will create a different generation number. With this mechanism, the host driver can detect that the FW has crashed and restarted, and the driver can then take steps to re-initialize its connection. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02ionic: add and enable tx and rx timestamp handlingShannon Nelson1-1/+1
The Tx and Rx timestamped packets are handled through separate queues. Here we set them up, service them, and tear them down along with the normal Tx and Rx queues. Signed-off-by: Allen Hubbe <allenbh@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02ionic: link in the new hw timestamp codeShannon Nelson1-0/+1
These are changes to compile and link the new code, but no new feature support is available or advertised yet. Signed-off-by: Allen Hubbe <allenbh@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02ionic: add hw timestamp structs to interfaceShannon Nelson1-0/+1
The interface for hardware timestamping includes a new FW request, device identity fields, Tx and Rx queue feature bits, a new Rx filter type, the beginnings of Rx packet classifications, and hardware timestamp registers. If the IONIC_ETH_HW_TIMESTAMP bit is shown in the ionic_lif_config features bit string, then we have support for the hw clock registers. If the IONIC_RXQ_F_HWSTAMP and IONIC_TXQ_F_HWSTAMP features are shown in the ionic_q_identity features, then the queues can support HW timestamps on packets. Signed-off-by: Allen Hubbe <allenbh@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02ionic: add new queue features to interfaceShannon Nelson1-0/+1
Add queue feature extensions to prepare for features that can be queue specific, in addition to the general queue features already defined. While we're here, change the existing feature ids from #defines to enum. Signed-off-by: Allen Hubbe <allenbh@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-30ionic: avoid races in ionic_heartbeat_checkShannon Nelson1-2/+5
Rework the heartbeat checks to be sure that we're getting an atomic operation. Through testing we found occasions where a separate thread could clash with this check and cause erroneous heartbeat check results. Signed-off-by: Allen Hubbe <allenbh@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-15ionic: aggregate Tx byte counting callsShannon Nelson1-0/+1
Gather the Tx packet and byte counts and call netdev_tx_completed_queue() only once per clean cycle. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-15ionic: simplify TSO descriptor mappingShannon Nelson1-1/+4
One issue with the original TSO code was that it was working too hard to deal with skb layouts that were never going to show up, such as an skb->data that was longer than a single descriptor's length. The other issue was trying to arrange the fragment dma mapping at the same time as figuring out the descriptors needed. There was just too much going on at the same time. Now we do the dma mapping first, which sets up the buffers with skb->data in buf[0] and the remaining frags in buf[1..n-1]. Next we spread the bufs across the descriptors needed, where each descriptor gets up to mss number of bytes. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10ionic: optimize fastpath struct usageShannon Nelson1-3/+4
Clean up a couple of struct uses to make for better fast path access. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10ionic: implement Rx page reuseShannon Nelson1-3/+9
Rework the Rx buffer allocations to use pages twice when using normal MTU in order to cut down on buffer allocation and mapping overhead. Instead of tracking individual pages, in which we may have wasted half the space when using standard 1500 MTU, we track buffers which use half pages, so we can use the second half of the page rather than allocate and map a new page once the first buffer has been used. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-11-14ionic: batch rx buffer refillingShannon Nelson1-1/+3
We don't need to refill the rx descriptors on every napi if only a few were handled. Waiting until we can batch up a few together will save us a few Rx cycles. Signed-off-by: Shannon Nelson <snelson@pensando.io> Reviewed-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-23ionic: clean up sparse complaintsShannon Nelson1-0/+2
The sparse complaints around the static_asserts were obscuring more useful complaints. So, don't check the static_asserts, and fix the remaining sparse complaints. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-09-30ionic: stop watchdog timer earlier on removeShannon Nelson1-1/+0
We need to be better at making sure we don't have a link check watchdog go off while we're shutting things down, so let's stop the timer as soon as we start the remove. Meanwhile, since that was the only thing in ionic_dev_teardown(), simplify and remove that function. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-16ionic: dynamic interrupt moderationShannon Nelson1-0/+1
Use the dim library to manage dynamic interrupt moderation in ionic. v3: rebase v2: untangled declarations in ionic_dim_work() Signed-off-by: Shannon Nelson <snelson@pensando.io> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-02ionic: clean up desc_info and cq_info structsShannon Nelson1-6/+0
Remove some unnecessary struct fields and related code. Co-developed-by: Neel Patel <neel@pensando.io> Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-02ionic: struct reorder for faster accessShannon Nelson1-9/+9
Move a few active struct fields to the front of the struct for a little better cache use and performance. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-28ionic: use index not pointer for queue trackingShannon Nelson1-12/+37
Use index counters rather than pointers for tracking head and tail in the queues to save a little memory and to perhaps slightly faster queue processing. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-21ionic: get MTU from lif identityShannon Nelson1-2/+0
Change from using hardcoded MTU limits and instead use the firmware defined limits. The value from the LIF attributes is the frame size, so we take off the header size to convert to MTU size. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-12ionic: more ionic name tweaksShannon Nelson1-5/+5
Fix up a few more local names that need an "ionic" prefix. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-12ionic: support longer tx sg listsShannon Nelson1-1/+6
The version 1 Tx queues can use longer SG lists than the original version 0 queues, but we need to check to see if the firmware supports the v1 Tx queues. This implements the queue type query for all queue types, and uses the information to set up for using the longer Tx SG lists. Because the Tx SG list can be longer, we need to limit the max ring length to be sure we stay inside the boundaries of a DMA allocation max size, so we lower the max Tx ring size. The driver sets its highest known version in the Q_IDENTITY command, and the FW returns the highest version that it knows, bounded by the driver's version. The negotiated version number is later used in the Q_INIT commands. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-30ionic: remove lifs on fw resetShannon Nelson1-0/+1
When the FW RESET event comes to the driver from the firmware, or the fw_status goes to 0 (stopped) or to 0xff (no PCI connection), then shut down the driver activity. This event signals a FW upgrade where we need to quiesce all operations and wait for the FW to restart. The FW will continue the update process once it sees all the LIFs are reset. When the update process is done it will set the fw_status back to RUNNING. Meanwhile, the heartbeat check continues and when the fw_status is seen as set to running we can restart the driver operations. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05ionic: support sr-iov operationsShannon Nelson1-0/+7
Add the netdev ops for managing VFs. Since most of the management work happens in the NIC firmware, the driver becomes mostly a pass-through for the network stack commands that want to control and configure the VFs. We also tweak ionic_station_set() a little to allow for the VFs that start off with a zero'd mac address. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-25ionic: implement support for rx sglShannon Nelson1-0/+7
Even out Rx performance across MTU sizes by changing from full skb allocations to page-based frag allocations. The device supports a form of scatter-gather in the Rx path, so we can set up a number of pages for each descriptor, all of which are easier to alloc and pass around than the standard kzalloc'd buffer. An skb is wrapped around the pages while processing the received packets, and pages are recycled as needed, or left alone if they weren't used in the Rx. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-25ionic: add a watchdog timer to monitor heartbeatShannon Nelson1-0/+1
Add a watchdog to periodically monitor the NIC heartbeat. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-25ionic: add heartbeat checkShannon Nelson1-0/+4
Most of our firmware has a heartbeat feature that the driver can watch for to see if the FW is still alive and likely to answer a dev_cmd or AdminQ request. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add coalesce and other featuresShannon Nelson1-0/+1
Interrupt coalescing, tunable copybreak value, and tx timeout. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add initial ethtool supportShannon Nelson1-0/+7
Add in the basic ethtool callbacks for device information and control. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add the basic NDO callbacks for netdev supportShannon Nelson1-0/+2
Set up the initial NDO structure and callbacks for netdev to use, and register the netdev. This will allow us to do a few basic operations on the device, but no traffic yet. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add basic adminq supportShannon Nelson1-0/+109
Most of the NIC configuration happens through the AdminQ message queue. NAPI is used for basic interrupt handling and message queue management. These routines are set up to be shared among different types of queues when used in slow-path handling. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add interrupts and doorbellsShannon Nelson1-0/+22
The ionic interrupt model is based on interrupt control blocks accessed through the PCI BAR. Doorbell registers are used by the driver to signal to the NIC that requests are waiting on the message queues. Interrupts are used by the NIC to signal to the driver that answers are waiting on the completion queues. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add basic lif supportShannon Nelson1-0/+7
The LIF is the Logical Interface, which represents the external connections. The NIC can multiplex many LIFs to a single port, but in most setups, LIF0 is the primary control for the port. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add port management commandsShannon Nelson1-0/+13
The port management commands apply to the physical port associated with the PCI device, which might be shared among several logical interfaces. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add hardware init and device commandsShannon Nelson1-0/+138
The ionic device has a small set of PCI registers, including a device control and data space, and a large set of message commands. Also adds new DEVLINK_INFO_VERSION_GENERIC tags for ASIC_ID, ASIC_REV, and FW. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
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