[v2,00/18] can: m_can: Optimizations for m_can/tcan part 2

Message

Markus Schneider-Pargmann Jan. 25, 2023, 7:50 p.m. UTC

Hi Marc and everyone,

second version part 2, I fixed the bug I noticed for integrated m_can
devices. The accounting was wrong or missing for these. I don't have the
integrated hardware myself so any testing is appreciated (I only have
the tcan device to test the mcan driver). Also v2 rebases on top of
v6.2-rc5.

The series implements many small and bigger throughput improvements and
adds rx/tx coalescing at the end.

Best,
Markus

Changes in v2:
- Rebased on v6.2-rc5
- Fixed missing/broken accounting for non peripheral m_can devices.

part 1:
v1 - https://lore.kernel.org/lkml/[e-mail]
v2 - https://lore.kernel.org/lkml/[e-mail]

part 2:
v1 - https://lore.kernel.org/lkml/[e-mail]

Markus Schneider-Pargmann (18):
  can: tcan4x5x: Remove reserved register 0x814 from writable table
  can: tcan4x5x: Check size of mram configuration
  can: m_can: Remove repeated check for is_peripheral
  can: m_can: Always acknowledge all interrupts
  can: m_can: Remove double interrupt enable
  can: m_can: Disable unused interrupts
  can: m_can: Keep interrupts enabled during peripheral read
  can: m_can: Write transmit header and data in one transaction
  can: m_can: Implement receive coalescing
  can: m_can: Implement transmit coalescing
  can: m_can: Add rx coalescing ethtool support
  can: m_can: Add tx coalescing ethtool support
  can: m_can: Cache tx putidx
  can: m_can: Use the workqueue as queue
  can: m_can: Introduce a tx_fifo_in_flight counter
  can: m_can: Use tx_fifo_in_flight for netif_queue control
  can: m_can: Implement BQL
  can: m_can: Implement transmit submission coalescing

 drivers/net/can/m_can/m_can.c           | 514 ++++++++++++++++++------
 drivers/net/can/m_can/m_can.h           |  36 +-
 drivers/net/can/m_can/tcan4x5x-core.c   |   5 +
 drivers/net/can/m_can/tcan4x5x-regmap.c |   1 -
 4 files changed, 432 insertions(+), 124 deletions(-)