[v5,net-next,0/5] net: ethernet: mtk_wed: introduce reset support

Message

Lorenzo Bianconi Jan. 11, 2023, 5:22 p.m. UTC

Introduce proper reset integration between ethernet and wlan drivers in order
to schedule wlan driver reset when ethernet/wed driver is resetting.
Introduce mtk_hw_reset_monitor work in order to detect possible DMA hangs.

Changes since v4:
- add missing usleep_range

Changes since v3:
- rely on msleep() utility instead of mdelay() in mtk_hw_init() and
  usleep_range() in mtk_ppe_prepare_reset() since the code runs in
  non-atomic context

Changes since v2:
- rebase on top of net-next
- move rtnl_lock/rtnl_unlock in reset callback
- re-run mtk_prepare_for_reset() after mtk_wed_fe_reset() acquiring RTNL lock

Changes since v1:
- rebase on top of net-next

Lorenzo Bianconi (5):
  net: ethernet: mtk_eth_soc: introduce mtk_hw_reset utility routine
  net: ethernet: mtk_eth_soc: introduce mtk_hw_warm_reset support
  net: ethernet: mtk_eth_soc: align reset procedure to vendor sdk
  net: ethernet: mtk_eth_soc: add dma checks to mtk_hw_reset_check
  net: ethernet: mtk_wed: add reset/reset_complete callbacks

 drivers/net/ethernet/mediatek/mtk_eth_soc.c  | 297 ++++++++++++++++---
 drivers/net/ethernet/mediatek/mtk_eth_soc.h  |  38 +++
 drivers/net/ethernet/mediatek/mtk_ppe.c      |  27 ++
 drivers/net/ethernet/mediatek/mtk_ppe.h      |   1 +
 drivers/net/ethernet/mediatek/mtk_ppe_regs.h |   6 +
 drivers/net/ethernet/mediatek/mtk_wed.c      |  40 +++
 drivers/net/ethernet/mediatek/mtk_wed.h      |   8 +
 include/linux/soc/mediatek/mtk_wed.h         |   2 +
 8 files changed, 380 insertions(+), 39 deletions(-)