From: Ira Weiny <ira.weiny@intel.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Alison Schofield <alison.schofield@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Ben Widawsky <ben.widawsky@intel.com>,
linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: [PATCH V7 03/10] PCI: Create PCI library functions in support of DOE mailboxes.
Date: Thu, 31 Mar 2022 08:19:56 -0700 [thread overview]
Message-ID: <YkXGnKsTEUAe29io@iweiny-desk3> (raw)
In-Reply-To: <YkVBJ+nRA2g/WDxa@infradead.org>
On Wed, Mar 30, 2022 at 10:50:31PM -0700, Christoph Hellwig wrote:
> On Wed, Mar 30, 2022 at 04:59:13PM -0700, ira.weiny@intel.com wrote:
> > From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> >
> > Introduced in a PCI v6.0[1], DOE provides a config space based mailbox
> > with standard protocol discovery. Each mailbox is accessed through a
> > DOE Extended Capability.
> >
> > Each DOE mailbox must support the DOE discovery protocol in addition to
> > any number of additional protocols.
> >
> > Define core PCI functionality to manage a single PCI DOE mailbox at a
> > defined config space offset. Functionality includes creating, supported
> > protocol queries, submit tasks to, and destroying the new state objects.
> >
> > If interrupts are desired, interrupts vectors should be allocated prior
> > to asking for irq's when creating a mailbox object.
>
> I really don't think this should be built unconditionally and bloat
> every single kernel built with PCI support.
I can add a Kconfig.
Thanks for looking,
Ira
next prev parent reply other threads:[~2022-03-31 15:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-30 23:59 [PATCH V7 00/10] CXL: Read CDAT and DSMAS data from the device ira.weiny
2022-03-30 23:59 ` [PATCH V7 01/10] PCI: Add vendor ID for the PCI SIG ira.weiny
2022-03-30 23:59 ` [PATCH V7 02/10] PCI: Replace magic constant for PCI Sig Vendor ID ira.weiny
2022-03-30 23:59 ` [PATCH V7 03/10] PCI: Create PCI library functions in support of DOE mailboxes ira.weiny
2022-03-31 5:50 ` Christoph Hellwig
2022-03-31 15:19 ` Ira Weiny [this message]
2022-04-02 14:48 ` Lukas Wunner
2022-04-05 23:22 ` Ira Weiny
2022-04-06 10:11 ` Jonathan Cameron
2022-04-06 21:23 ` Ira Weiny
2022-04-07 16:01 ` Bjorn Helgaas
2022-03-30 23:59 ` [PATCH V7 04/10] cxl/pci: Create auxiliary devices for each DOE mailbox ira.weiny
2022-04-29 15:33 ` Jonathan Cameron
2022-03-30 23:59 ` [PATCH V7 05/10] cxl/pci: Create DOE auxiliary driver ira.weiny
2022-03-30 23:59 ` [PATCH V7 06/10] cxl/pci: Find the DOE mailbox which supports CDAT ira.weiny
2022-03-30 23:59 ` [PATCH V7 07/10] cxl/mem: Read CDAT table ira.weiny
2022-03-30 23:59 ` [PATCH V7 08/10] cxl/cdat: Introduce cxl_cdat_valid() ira.weiny
2022-03-30 23:59 ` [PATCH V7 09/10] cxl/mem: Retry reading CDAT on failure ira.weiny
2022-03-30 23:59 ` [PATCH V7 10/10] cxl/port: Parse out DSMAS data from CDAT table ira.weiny
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