amdgpu tracks the linux-4.19.y (lts) branch of linux-stable
currently this is 4.19.69
On Wed, Sep 04, 2019 at 10:28:51AM -0500, Charlie Burnett wrote:
> Thanks for the advice!
> Do you happen to have a link to the commit amdgpu is at currently?
>
> On Wed, Sep 4, 2019 at 9:44 AM Jonathan Gray <j...@jsg.id.au> wrote:
>
> > Look for individual post 4.19 linux commits that are relevant.
> > We have in the past taken small patches to enable more
> > generations of hardware.
> >
> > On Wed, Sep 04, 2019 at 08:11:24AM -0500, Charlie Burnett wrote:
> > > Hey,
> > > I???ve been trying to write a patch to get vega 20 working, but due to a
> > > screw up on my end I lost the progress I???d made. Before I start over
> > again,
> > > I was wondering if you had any advice on how to do it? Before, I was
> > trying
> > > to more or less just port the vega 20 hwmgr files in from FreeBSD drm
> > next
> > > which is at linux drm 5.0 as well as the other files which seemed to
> > > mention Vega 20 or seemed to be needed to compile. I wasn???t having much
> > > luck as you can imagine, and currently I???m still in university so my
> > > experience with kernel patching isn???t fantastic, I was wondering if you
> > > might have any advice where to begin if I???m having to start from
> > scratch?
> > > Best regards,
> > > Charlie Burnett
> > >
> > > On Thu, Aug 1, 2019 at 11:06 PM Jonathan Gray <j...@jsg.id.au> wrote:
> > >
> > > > On Fri, Aug 02, 2019 at 03:11:54AM -0500, Charlie Burnett wrote:
> > > > > Hey-
> > > > > I'd been messing around with the AMDGPU on current (which I'm aware
> > is
> > > > very
> > > > > experimental) and had very few issues with it using a Vega 56 GPU. I
> > > > > recently swapped to another Vega GPU (Radeon VII) and have issues
> > with
> > > > the
> > > > > display not showing anything. Still boots fine, in that I can still
> > enter
> > > > > commands (i.e. reboot) so it has to be a display issue. I tried
> > searching
> > > > > for the diff where the firmware was added which I'm certain I saw
> > (for
> > > > Vega
> > > > > 20) but can't seem to find it in the commit history. Anyone have a
> > fix
> > > > for
> > > > > it, and if not, who should I talk to if I wanted to help get it
> > working?
> > > > I
> > > > > saw most of the AMDGPU commits have been by @jonathangray if he
> > would be
> > > > > the best option.
> > > > > Thanks!
> > > >
> > > > vega20 firmware was added when ports/sysutils/firmware/amdgpu was
> > > > updated to 20190312.
> > > >
> > > > vega20 is marked as experimental in the version of drm we have, but we
> > > > don't currently check the flag on probe like linux does.
> > > >
> > > > The following diff will prevent amdgpu from matching on devices
> > > > in the amdgpu_pciidlist table with the AMD_EXP_HW_SUPPORT flag
> > > > (currently these are all vega20 ids).
> > > >
> > > > Index: sys/dev/pci/drm/include/drm/drm_drv.h
> > > > ===================================================================
> > > > RCS file: /cvs/src/sys/dev/pci/drm/include/drm/drm_drv.h,v
> > > > retrieving revision 1.2
> > > > diff -u -p -r1.2 drm_drv.h
> > > > --- sys/dev/pci/drm/include/drm/drm_drv.h 25 Jul 2019 05:48:16
> > > > -0000 1.2
> > > > +++ sys/dev/pci/drm/include/drm/drm_drv.h 2 Aug 2019 03:29:58
> > -0000
> > > > @@ -291,5 +291,7 @@ static inline bool drm_drv_uses_atomic_m
> > > > int drm_dev_register(struct drm_device *, unsigned long);
> > > > void drm_dev_unregister(struct drm_device *);
> > > > int drm_getpciinfo(struct drm_device *, void *, struct drm_file *);
> > > > +const struct drm_pcidev *drm_find_description(int, int,
> > > > + const struct drm_pcidev *);
> > > >
> > > > #endif
> > > > Index: sys/dev/pci/drm/amd/amdgpu/amdgpu_kms.c
> > > > ===================================================================
> > > > RCS file: /cvs/src/sys/dev/pci/drm/amd/amdgpu/amdgpu_kms.c,v
> > > > retrieving revision 1.3
> > > > diff -u -p -r1.3 amdgpu_kms.c
> > > > --- sys/dev/pci/drm/amd/amdgpu/amdgpu_kms.c 4 Jul 2019 03:39:07
> > -0000
> > > > 1.3
> > > > +++ sys/dev/pci/drm/amd/amdgpu/amdgpu_kms.c 2 Aug 2019 03:35:35
> > -0000
> > > > @@ -1337,10 +1337,23 @@ int amdgpu_debugfs_firmware_init(struct
> > > > int
> > > > amdgpu_probe(struct device *parent, void *match, void *aux)
> > > > {
> > > > + struct pci_attach_args *pa = aux;
> > > > + const struct drm_pcidev *id_entry;
> > > > + unsigned long flags = 0;
> > > > +
> > > > if (amdgpu_fatal_error)
> > > > return 0;
> > > > - if (drm_pciprobe(aux, amdgpu_pciidlist))
> > > > - return 20;
> > > > +
> > > > + id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
> > > > + PCI_PRODUCT(pa->pa_id), amdgpu_pciidlist);
> > > > + if (id_entry != NULL) {
> > > > + flags = id_entry->driver_data;
> > > > + if (flags & AMD_EXP_HW_SUPPORT)
> > > > + return 0;
> > > > + else
> > > > + return 20;
> > > > + }
> > > > +
> > > > return 0;
> > > > }
> > > >
> > > >
> > > >
> >
