On Mon, Dec 10, 2018 at 05:12:19PM +0800, Wesley Sheng wrote: > Hi, Everyone, > > This patch series adds support for the Switchtec MRPC DMA mode. > > Switchtec switches supports 2 MRPC interaction modes: MRPC normal mode and > MRPC DMA mode, a new feature in the latest firmware versions. MRPC normal > mode requires the host to read the MRPC command status and output data. > In MRPC DMA mode the command status and output data are pushed directly to > host memory and issues an interrupt upon completion. The advantage of MRPC > DMA mode is avoiding potential high latency response from the Memory Read > TLP. > > Additionally, we've made the following changes: > > * Improve the efficiency of filling MRPC Input buffer by enabling write > combining on MRPC region of BAR > * Software workaround for delay responded Memory READ TLPs that access > the BAR > * And several bug fixes > > Regards, > Wesley > > -- > > Changed since v1: > - It's a resend of v1 > > -- > > > Boris Glimcher (1): > switchtec: Set DMA coherent mask in Switchtec driver > > Joey Zhang (1): > switchtec: A temporary variable should be used for the flags of > switchtec_ioctl_event_ctl > > Kelvin Cao (2): > switchtec: Remove immediate status check after submit a MRPC command > switchtec: Improve MRPC efficiency by leveraging write combining > > Wesley Sheng (1): > switchtec: MRPC DMA mode implementation > > drivers/pci/switch/switchtec.c | 154 ++++++++++++++++++++++++++++++++++++----- > include/linux/switchtec.h | 16 +++++ > 2 files changed, 153 insertions(+), 17 deletions(-) I applied all these on pci/switchtec for v4.21, thanks! If you want to change anything, let me know. I'm happy to replace or update patches.
