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Date:   Fri, 12 Apr 2019 08:52:52 +0000
From:   Ayan Halder <Ayan.Halder@....com>
To:     Rob Clark <robdclark@...il.com>
CC:     Eric Engestrom <eric.engestrom@...el.com>,
        Liviu Dudau <Liviu.Dudau@....com>,
        Brian Starkey <Brian.Starkey@....com>,
        "malidp@...s.arm.com" <malidp@...s.arm.com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "maxime.ripard@...tlin.com" <maxime.ripard@...tlin.com>,
        "sean@...rly.run" <sean@...rly.run>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "jani.nikula@...ux.intel.com" <jani.nikula@...ux.intel.com>,
        "joonas.lahtinen@...ux.intel.com" <joonas.lahtinen@...ux.intel.com>,
        "rodrigo.vivi@...el.com" <rodrigo.vivi@...el.com>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "freedreno@...ts.freedesktop.org" <freedreno@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        nd <nd@....com>
Subject: Re: [PATCH libdrm] headers: Sync with drm-next

On Wed, Apr 10, 2019 at 09:49:33PM -0400, Rob Clark wrote:
> On Tue, Apr 9, 2019 at 8:27 AM Eric Engestrom <eric.engestrom@...el.com> wrote:
> >
> > On Tuesday, 2019-04-09 12:59:13 +0100, Eric Engestrom wrote:
> > > On Tuesday, 2019-04-09 11:35:14 +0000, Ayan Halder wrote:
> > > > Generated using make headers_install from the drm-next
> > > > tree - git://anongit.freedesktop.org/drm/drm
> > > > branch - drm-next
> > > > commit - 14d2bd53a47a7e1cb3e03d00a6b952734cf90f3f
> > > >
> > > > The changes were as follows :-
> > > >
> > > > core: (drm.h, drm_fourcc.h, drm_mode.h)
> > > > - Added 'struct drm_syncobj_transfer', 'struct drm_syncobj_timeline_wait' and 'struct drm_syncobj_timeline_array'
> > > > - Added various DRM_IOCTL_SYNCOBJ_ ioctls
> > > > - Added some new RGB and YUV formats
> > > > - Added 'DRM_FORMAT_MOD_VENDOR_ALLWINNER'
> > > > - Added 'SAMSUNG' and Arm's 'AFBC' and 'ALLWINNER' format modifiers
> > > > - Added 'struct drm_mode_rect'
> > > >
> > > > i915:
> > > > - Added struct 'struct i915_user_extension' and various 'struct drm_i915_gem_context_'
> > > > - Added different modes of per-process Graphics Translation Table
> > > >
> > > > msm:
> > > > - Added various get or set GEM buffer info flags
> > > > - Added some MSM_SUBMIT_BO_ macros
> > > > - Modified 'struct drm_msm_gem_info'
> > > >
> > > > Signed-off-by: Ayan Kumar halder <ayan.halder@....com>
> > >
> > > This looks sane, and applies cleanly :)
> > > Acked-by: Eric Engestrom <eric.engestrom@...el.com>
> >
> > Actually, revoking that, as this patch breaks the build; see below.
> >
> > >
> > > > ---
> > > >  include/drm/drm.h        |  36 +++++++
> > > >  include/drm/drm_fourcc.h | 136 +++++++++++++++++++++++++++
> > > >  include/drm/drm_mode.h   |  23 ++++-
> > > >  include/drm/i915_drm.h   | 237 ++++++++++++++++++++++++++++++++++++++++-------
> > > >  include/drm/msm_drm.h    |  25 +++--
> > > >  5 files changed, 415 insertions(+), 42 deletions(-)
> > > >
> > [snip]
> > > > diff --git a/include/drm/msm_drm.h b/include/drm/msm_drm.h
> > > > index c06d0a5..91a16b3 100644
> > > > --- a/include/drm/msm_drm.h
> > > > +++ b/include/drm/msm_drm.h
> > > > @@ -105,14 +105,24 @@ struct drm_msm_gem_new {
> > > >     __u32 handle;         /* out */
> > > >  };
> > > >
> > > > -#define MSM_INFO_IOVA      0x01
> > > > -
> > > > -#define MSM_INFO_FLAGS (MSM_INFO_IOVA)
> > > > +/* Get or set GEM buffer info.  The requested value can be passed
> > > > + * directly in 'value', or for data larger than 64b 'value' is a
> > > > + * pointer to userspace buffer, with 'len' specifying the number of
> > > > + * bytes copied into that buffer.  For info returned by pointer,
> > > > + * calling the GEM_INFO ioctl with null 'value' will return the
> > > > + * required buffer size in 'len'
> > > > + */
> > > > +#define MSM_INFO_GET_OFFSET        0x00   /* get mmap() offset, returned by value */
> > > > +#define MSM_INFO_GET_IOVA  0x01   /* get iova, returned by value */
> > > > +#define MSM_INFO_SET_NAME  0x02   /* set the debug name (by pointer) */
> > > > +#define MSM_INFO_GET_NAME  0x03   /* get debug name, returned by pointer */
> > > >
> > > >  struct drm_msm_gem_info {
> > > >     __u32 handle;         /* in */
> > > > -   __u32 flags;          /* in - combination of MSM_INFO_* flags */
> > > > -   __u64 offset;         /* out, mmap() offset or iova */
> > > > +   __u32 info;           /* in - one of MSM_INFO_* */
> > > > +   __u64 value;          /* in or out */
> > > > +   __u32 len;            /* in or out */
> > > > +   __u32 pad;
> >
> > freedreno/msm/msm_bo.c needs to be updated to reflect those changes.
> 
> 
> I think you can just rename flags->info and offset->value, the rest of
> the struct should be zero-initialized.. if in doubt you can check
> $mesa/src/freedreno/drm/msm_bo.c

Sorry, I had dropped the changes to 'msm_drm.h' in my v2 patch (which
I had sent 10th April, 2019 titled '[PATCH libdrm v2] headers: Sync
with drm-next ') as I wasn't sure about the changes.
> 
> side-note:  the libdrm_freedreno code was folded into mesa in 19.0, so
> at *some* point we can probably disable libdrm_freedreno build by
> default.  (I'd kinda still like to keep the code around for some misc
> standalone tools I have, but that is the sort of thing where I can fix
> libdrm if it gets broken).  When to switch to disabled by default I
> guess comes down to how long we want to support mesa 18.x with latest
> libdrm??  Maybe after 19.1, since (selfishly motivated) that gives me
> a long enough window back in case I find myself needing to bisect for
> some regression..
> 
> BR,
> -R
> 
> >
> > > >  };
> > > >
> > > >  #define MSM_PREP_READ        0x01
> > > > @@ -188,8 +198,11 @@ struct drm_msm_gem_submit_cmd {
> > > >   */
> > > >  #define MSM_SUBMIT_BO_READ             0x0001
> > > >  #define MSM_SUBMIT_BO_WRITE            0x0002
> > > > +#define MSM_SUBMIT_BO_DUMP             0x0004
> > > >
> > > > -#define MSM_SUBMIT_BO_FLAGS            (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE)
> > > > +#define MSM_SUBMIT_BO_FLAGS            (MSM_SUBMIT_BO_READ | \
> > > > +                                   MSM_SUBMIT_BO_WRITE | \
> > > > +                                   MSM_SUBMIT_BO_DUMP)
> > > >
> > > >  struct drm_msm_gem_submit_bo {
> > > >     __u32 flags;          /* in, mask of MSM_SUBMIT_BO_x */
> > > > --
> > > > 2.7.4
> > > >

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