On Thu, Jun 02, 2022 at 11:31:56AM -0700, Ira wrote: > On Wed, Jun 01, 2022 at 05:31:13PM +0100, Jonathan Cameron wrote: > > On Wed, 1 Jun 2022 16:35:40 +0100 > > Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> wrote: > > > > > On Tue, 31 May 2022 08:26:29 -0700 > > > ira.weiny@xxxxxxxxx wrote: > > > > > > > From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > > > > > > > The OS will need CDAT data from CXL devices to properly set up > > > > interleave sets. Currently this is supported through a DOE mailbox > > > > which supports CDAT. > > > > > > > > Cache the CDAT data for later parsing. Provide a sysfs binary attribute > > > > to allow dumping of the CDAT. > > > > > > > > Binary dumping is modeled on /sys/firmware/ACPI/tables/ > > > > > > > > The ability to dump this table will be very useful for emulation of real > > > > devices once they become available as QEMU CXL type 3 device emulation will > > > > be able to load this file in. > > > > > > > > This does not support table updates at runtime. It will always provide > > > > whatever was there when first cached. Handling of table updates can be > > > > implemented later. > > > > > > > > Finally create a complete list of DOE defines within cdat.h for code > > > > wishing to decode the CDAT table. > > > > > > > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > > > Co-developed-by: Ira Weiny <ira.weiny@xxxxxxxxx> > > > > Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx> > > > > > > > > > > Fun question of ownership inline... > > > > And a follow up due to triggering a bug that predated this series... > > > > I'd send a fix, but I'm off on a long weekend shortly :) > > NP I discussed with Dan and the use of dev_groups should allow me to move this > to port probe where it belongs. I put it here for the sysfs stuff. Not to make a habit of replying to my own mails but this works. So I'm going to go forward with spinning this again. Ira
