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From: "Kirsher, Jeffrey T" <jeffrey.t.kirsher@intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>, Mark Brown <broonie@kernel.org>
Cc: Greg KH <gregkh@linuxfoundation.org>,
	Takashi Iwai <tiwai@suse.de>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	"Ranjani Sridharan" <ranjani.sridharan@linux.intel.com>,
	"davem@davemloft.net" <davem@davemloft.net>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
	"nhorman@redhat.com" <nhorman@redhat.com>,
	"sassmann@redhat.com" <sassmann@redhat.com>,
	Fred Oh <fred.oh@linux.intel.com>
Subject: RE: [net-next v4 10/12] ASoC: SOF: Introduce descriptors for SOF client
Date: Mon, 29 Jun 2020 23:13:27 +0000	[thread overview]
Message-ID: <61CC2BC414934749BD9F5BF3D5D940449874174D@ORSMSX112.amr.corp.intel.com> (raw)
In-Reply-To: <20200629225959.GF25301@ziepe.ca>

> -----Original Message-----
> From: Jason Gunthorpe <jgg@ziepe.ca>
> Sent: Monday, June 29, 2020 16:00
> To: Mark Brown <broonie@kernel.org>
> Cc: Greg KH <gregkh@linuxfoundation.org>; Takashi Iwai <tiwai@suse.de>;
> Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>; Ranjani Sridharan
> <ranjani.sridharan@linux.intel.com>; Kirsher, Jeffrey T
> <jeffrey.t.kirsher@intel.com>; davem@davemloft.net; netdev@vger.kernel.org;
> linux-rdma@vger.kernel.org; nhorman@redhat.com; sassmann@redhat.com;
> Fred Oh <fred.oh@linux.intel.com>
> Subject: Re: [net-next v4 10/12] ASoC: SOF: Introduce descriptors for SOF
> client
> 
> On Mon, Jun 29, 2020 at 09:33:17PM +0100, Mark Brown wrote:
> > On Wed, May 27, 2020 at 09:17:33AM +0200, Greg KH wrote:
> >
> > > Ok, that's good to hear.  But platform devices should never be
> > > showing up as a child of a PCI device.  In the "near future" when we
> > > get the virtual bus code merged, we can convert any existing users
> > > like this to the new code.
> >
> > What are we supposed to do with things like PCI attached FPGAs and
> > ASICs in that case?  They can have host visible devices with physical
> > resources like MMIO ranges and interrupts without those being split up
> > neatly as PCI subfunctions - the original use case for MFD was such
> > ASICs, there's a few PCI drivers in there now.
> 
> Greg has been pretty clear that MFD shouldn't have been used on top of PCI
> drivers.
> 
> In a sense virtual bus is pretty much MFD v2.
 
With the big distinction that MFD uses Platform bus/devices, which is why we could not
use MFD as a solution, and virtbus does not.

  reply	other threads:[~2020-06-29 23:13 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-20  7:02 [net-next v4 00/12][pull request] 100GbE Intel Wired LAN Driver Updates 2020-05-19 Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 01/12] Implementation of Virtual Bus Jeff Kirsher
2020-05-21 14:57   ` Parav Pandit
2020-05-21 17:43     ` gregkh
2020-05-21 20:10       ` Jason Gunthorpe
2020-05-20  7:02 ` [net-next v4 02/12] ice: Create and register virtual bus for RDMA Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 03/12] ice: Complete RDMA peer registration Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 04/12] ice: Support resource allocation requests Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 05/12] ice: Enable event notifications Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 06/12] ice: Allow reset operations Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 07/12] ice: Pass through communications to VF Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 08/12] i40e: Move client header location Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 09/12] i40e: Register a virtbus device to provide RDMA Jeff Kirsher
2020-05-20  7:02 ` [net-next v4 10/12] ASoC: SOF: Introduce descriptors for SOF client Jeff Kirsher
2020-05-20  7:20   ` Greg KH
2020-05-20 12:54   ` Jason Gunthorpe
2020-05-20 12:57     ` Jason Gunthorpe
2020-05-21 21:11     ` Ranjani Sridharan
2020-05-21 23:34       ` Jason Gunthorpe
2020-05-22 14:29         ` Pierre-Louis Bossart
2020-05-22 14:55           ` Jason Gunthorpe
2020-05-22 15:33             ` Pierre-Louis Bossart
2020-05-22 17:10               ` Jason Gunthorpe
2020-05-22 18:35                 ` Pierre-Louis Bossart
2020-05-22 18:40                   ` Jason Gunthorpe
2020-05-22 18:48                     ` Pierre-Louis Bossart
2020-05-22 19:44                       ` Jason Gunthorpe
2020-05-22 21:05                         ` Pierre-Louis Bossart
2020-06-29 20:59               ` Mark Brown
2020-05-23  6:23           ` Greg KH
2020-05-23 19:41             ` Pierre-Louis Bossart
2020-05-24  6:35               ` Greg KH
2020-05-26 13:15                 ` Pierre-Louis Bossart
2020-05-26 13:37                   ` Takashi Iwai
2020-05-27  7:17                     ` Greg KH
2020-05-27 14:05                       ` Pierre-Louis Bossart
2020-06-29 20:33                       ` Mark Brown
2020-06-29 22:59                         ` Jason Gunthorpe
2020-06-29 23:13                           ` Kirsher, Jeffrey T [this message]
2020-06-30 10:31                           ` Mark Brown
2020-06-30 11:32                             ` Jason Gunthorpe
2020-06-30 14:16                               ` Mark Brown
2020-06-30 17:24                               ` Ranjani Sridharan
2020-06-30 17:27                                 ` Jason Gunthorpe
2020-07-01  9:50                                   ` Mark Brown
2020-07-01 23:32                                     ` Jason Gunthorpe
2020-07-02 11:15                                       ` Mark Brown
2020-07-02 12:11                                         ` Jason Gunthorpe
2020-07-02 12:20                                           ` Mark Brown
2020-07-01  6:59                                 ` Greg KH
2020-07-02 13:43                                   ` Ranjani Sridharan
2020-07-06 23:02                                     ` Dan Williams
2020-07-07 14:16                                       ` Greg KH
2020-05-25 16:55               ` Jason Gunthorpe
2020-06-29 20:21             ` Mark Brown
2020-06-29 17:36   ` Mark Brown
2020-05-20  7:02 ` [net-next v4 11/12] ASoC: SOF: Create client driver for IPC test Jeff Kirsher
2020-05-20  7:22   ` Greg KH
2020-05-20 12:56   ` Jason Gunthorpe
2020-05-27 20:18     ` Ranjani Sridharan
2020-05-28  0:12       ` Jason Gunthorpe
2020-05-28  1:40         ` Ranjani Sridharan
2020-05-28 10:45           ` Greg KH
2020-06-29 20:37             ` Mark Brown
2020-05-20  7:02 ` [net-next v4 12/12] ASoC: SOF: ops: Add new op for client registration Jeff Kirsher
2020-05-20  7:23   ` Greg KH
2020-05-20  7:17 ` [net-next v4 00/12][pull request] 100GbE Intel Wired LAN Driver Updates 2020-05-19 Greg KH
2020-05-20  7:25   ` Kirsher, Jeffrey T
2020-05-20  9:08     ` Greg KH

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