From: Bjorn Helgaas <helgaas@kernel.org>
To: Wesley Sheng <wesley.sheng@microchip.com>
Cc: kurt.schwemmer@microsemi.com, logang@deltatee.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
wesleyshenggit@sina.com
Subject: Re: [PATCH 0/5] Switchtec MRPC DMA mode support
Date: Thu, 13 Dec 2018 09:20:05 -0600 [thread overview]
Message-ID: <20181213152005.GE4701@google.com> (raw)
In-Reply-To: <1544433144-7563-1-git-send-email-wesley.sheng@microchip.com>
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.
next prev parent reply other threads:[~2018-12-13 15:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 9:12 [PATCH 0/5] Switchtec MRPC DMA mode support Wesley Sheng
2018-12-10 9:12 ` [PATCH 1/5] switchtec: Remove immediate status check after submit a MRPC command Wesley Sheng
2018-12-10 9:12 ` [PATCH 2/5] switchtec: Set DMA coherent mask in Switchtec driver Wesley Sheng
2018-12-10 9:12 ` [PATCH 3/5] switchtec: A temporary variable should be used for the flags of switchtec_ioctl_event_ctl Wesley Sheng
2018-12-12 22:43 ` Bjorn Helgaas
2018-12-12 22:52 ` Logan Gunthorpe
2018-12-10 9:12 ` [PATCH 4/5] switchtec: Improve MRPC efficiency by leveraging write combining Wesley Sheng
2018-12-10 9:12 ` [PATCH 5/5] switchtec: MRPC DMA mode implementation Wesley Sheng
2018-12-12 22:52 ` Bjorn Helgaas
2018-12-12 22:58 ` Logan Gunthorpe
2018-12-13 15:16 ` Bjorn Helgaas
2018-12-13 15:17 ` Bjorn Helgaas
2018-12-13 16:46 ` Logan Gunthorpe
2018-12-13 15:20 ` Bjorn Helgaas [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-11-15 9:43 [PATCH 0/5] Switchtec MRPC DMA mode support Wesley Sheng
2018-11-15 6:03 ` Logan Gunthorpe
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