[PATCH] drm/amdkfd: correct sdma queue number in kfd device init (v2)

Chen, Guchun Guchun.Chen at amd.com
Mon Dec 20 06:26:33 UTC 2021


[Public]

Email crossed:).

Graham, I have sent v3 to review, and will add you as another reviewed-by when pushing this patch. Thanks for the review from you and Jonathan.

Merry Xmas!

Regards,
Guchun

-----Original Message-----
From: Sider, Graham <Graham.Sider at amd.com> 
Sent: Monday, December 20, 2021 2:19 PM
To: Kim, Jonathan <Jonathan.Kim at amd.com>; Chen, Guchun <Guchun.Chen at amd.com>; amd-gfx at lists.freedesktop.org; Deucher, Alexander <Alexander.Deucher at amd.com>; Kuehling, Felix <Felix.Kuehling at amd.com>
Subject: RE: [PATCH] drm/amdkfd: correct sdma queue number in kfd device init (v2)

[Public]

> -----Original Message-----
> From: Kim, Jonathan <Jonathan.Kim at amd.com>
> Sent: Monday, December 20, 2021 12:44 AM
> To: Chen, Guchun <Guchun.Chen at amd.com>; amd- 
> gfx at lists.freedesktop.org; Deucher, Alexander 
> <Alexander.Deucher at amd.com>; Sider, Graham <Graham.Sider at amd.com>; 
> Kuehling, Felix <Felix.Kuehling at amd.com>
> Subject: RE: [PATCH] drm/amdkfd: correct sdma queue number in kfd 
> device init (v2)
> 
> [AMD Official Use Only]
> 
> > -----Original Message-----
> > From: Chen, Guchun <Guchun.Chen at amd.com>
> > Sent: December 19, 2021 10:09 PM
> > To: amd-gfx at lists.freedesktop.org; Deucher, Alexander 
> > <Alexander.Deucher at amd.com>; Sider, Graham
> <Graham.Sider at amd.com>;
> > Kuehling, Felix <Felix.Kuehling at amd.com>; Kim, Jonathan 
> > <Jonathan.Kim at amd.com>
> > Cc: Chen, Guchun <Guchun.Chen at amd.com>
> > Subject: [PATCH] drm/amdkfd: correct sdma queue number in kfd device 
> > init (v2)
> >
> > sdma queue number is not correct like on vega20, this patch promises 
> > the
> 
> I think you've also fixed Vega12 and Raven (they were being set to 8 
> before rather than 2).  No need to mention this in your description, 
> just double checking.
> 

I believe it was only Vega20 that was being set incorrectly. The condition was:

	sdma_version >= IP_VERSION(4, 0, 0)  &&
	sdma_version <= IP_VERSION(4, 2, 0))

which encapsulates Vega12 and Raven setting sdma_queues_per_engine to 2, but also accidently encapsulates Vega20.

> > setting keeps the same after code refactor.
> > Additionally, improve code to use switch case to list IP version to 
> > complete kfd device_info structure filling.
> > This keeps consistency with the IP parse code in amdgpu_discovery.c.
> >
> > v2: use dev_warn for the default switch case;
> >     set default sdma queue per engine(8) and IH handler to v9.
> > (Jonathan)
> >
> > Fixes: a9e2c4dc6cc4("drm/amdkfd: add kfd_device_info_init function")
> > Signed-off-by: Guchun Chen <guchun.chen at amd.com>
> 
> Other than the missing checks for Raven when setting the interrupt 
> class (see inline comments and reference kgd2kfd_probe in 
> kfd_device.c) and one nit-pick inline, this looks good to me.
> 
> With those fixed, this patch is
> Reviewed-by: Jonathan Kim <jonathan.kim at amd.com>
> 

Other than Jon's comments, this patch is also

Reviewed-by: Graham Sider <Graham.Sider at amd.com> 

> > ---
> >  drivers/gpu/drm/amd/amdkfd/kfd_device.c | 77
> > ++++++++++++++++++++++---
> >  1 file changed, 68 insertions(+), 9 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> > b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> > index facc28f58c1f..36406a261203 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> > @@ -59,11 +59,75 @@ static void kfd_gtt_sa_fini(struct kfd_dev 
> > *kfd);
> >
> >  static int kfd_resume(struct kfd_dev *kfd);
> >
> > +static void kfd_device_info_set_sdma_queue_num(struct kfd_dev *kfd)
> {
> > +     uint32_t sdma_version = kfd->adev-
> > >ip_versions[SDMA0_HWIP][0];
> > +
> > +     switch (sdma_version) {
> 
> Please pull in the indentation for all cases to line up with the switch block.
> 
> > +             case IP_VERSION(4, 0, 0):/* VEGA10 */
> > +             case IP_VERSION(4, 0, 1):/* VEGA12 */
> > +             case IP_VERSION(4, 1, 0):/* RAVEN */
> > +             case IP_VERSION(4, 1, 1):/* RAVEN */
> 
> As mentioned, you've also fixed Vega12 & Raven here I presume since 
> afaik, they're based off Vega10?
> 
> > +             case IP_VERSION(4, 1, 2):/* RENIOR */
> > +             case IP_VERSION(5, 2, 1):/* VANGOGH */
> > +             case IP_VERSION(5, 2, 3):/* YELLOW_CARP */
> > +                     kfd->device_info.num_sdma_queues_per_engine =
> > 2;
> > +                     break;
> > +             case IP_VERSION(4, 2, 0):/* VEGA20 */
> > +             case IP_VERSION(4, 2, 2):/* ARCTUTUS */
> > +             case IP_VERSION(4, 4, 0):/* ALDEBARAN */
> > +             case IP_VERSION(5, 0, 0):/* NAVI10 */
> > +             case IP_VERSION(5, 0, 1):/* CYAN_SKILLFISH */
> > +             case IP_VERSION(5, 0, 2):/* NAVI14 */
> > +             case IP_VERSION(5, 0, 5):/* NAVI12 */
> > +             case IP_VERSION(5, 2, 0):/* SIENNA_CICHLID */
> > +             case IP_VERSION(5, 2, 2):/* NAVY_FLOUDER */
> > +             case IP_VERSION(5, 2, 4):/* DIMGREY_CAVEFISH */
> > +                     kfd->device_info.num_sdma_queues_per_engine =
> > 8;
> > +                     break;
> > +             default:
> > +                     dev_warn(kfd_device,
> > +                             "Default sdma queue per engine(8) is 
> > + set due
> > to "
> > +                             "mismatch of sdma ip
> > block(SDMA_HWIP:0x%x).\n",
> > +                                sdma_version);
> > +                     kfd->device_info.num_sdma_queues_per_engine =
> > 8;
> > +     }
> > +}
> > +
> > +static void kfd_device_info_set_event_interrupt_class(struct 
> > +kfd_dev
> > +*kfd) {
> > +     uint32_t gc_version = KFD_GC_VERSION(kfd);
> > +
> > +     switch (gc_version) {
> > +     case IP_VERSION(9, 0, 1): /* VEGA10 */
> 
> Missing check for case IP_VERSION(9, 1, 0): /* RAVEN */
> 
> > +     case IP_VERSION(9, 2, 1): /* VEGA12 */
> 
> Missing check for case IP_VERSION(9, 2, 2): /* RAVEN */
> 
> Thanks,
> 
> Jon
> 
> > +     case IP_VERSION(9, 3, 0): /* RENOIR */
> > +     case IP_VERSION(9, 4, 0): /* VEGA20 */
> > +     case IP_VERSION(9, 4, 1): /* ARCTURUS */
> > +     case IP_VERSION(9, 4, 2): /* ALDEBARAN */
> > +     case IP_VERSION(10, 3, 1): /* VANGOGH */
> > +     case IP_VERSION(10, 3, 3): /* YELLOW_CARP */
> > +     case IP_VERSION(10, 1, 3): /* CYAN_SKILLFISH */
> > +     case IP_VERSION(10, 1, 10): /* NAVI10 */
> > +     case IP_VERSION(10, 1, 2): /* NAVI12 */
> > +     case IP_VERSION(10, 1, 1): /* NAVI14 */
> > +     case IP_VERSION(10, 3, 0): /* SIENNA_CICHLID */
> > +     case IP_VERSION(10, 3, 2): /* NAVY_FLOUNDER */
> > +     case IP_VERSION(10, 3, 4): /* DIMGREY_CAVEFISH */
> > +     case IP_VERSION(10, 3, 5): /* BEIGE_GOBY */
> > +             kfd->device_info.event_interrupt_class =
> > &event_interrupt_class_v9;
> > +             break;
> > +     default:
> > +             dev_warn(kfd_device, "v9 event interrupt handler is 
> > + set due
> > to "
> > +                     "mismatch of gc ip block(GC_HWIP:0x%x).\n",
> > gc_version);
> > +             kfd->device_info.event_interrupt_class =
> > &event_interrupt_class_v9;
> > +     }
> > +}
> > +
> >  static void kfd_device_info_init(struct kfd_dev *kfd,
> >                                bool vf, uint32_t gfx_target_version)  {
> >       uint32_t gc_version = KFD_GC_VERSION(kfd);
> > -     uint32_t sdma_version = kfd->adev-
> > >ip_versions[SDMA0_HWIP][0];
> >       uint32_t asic_type = kfd->adev->asic_type;
> >
> >       kfd->device_info.max_pasid_bits = 16; @@ -75,16 +139,11 @@ 
> > static void kfd_device_info_init(struct kfd_dev *kfd,
> >       if (KFD_IS_SOC15(kfd)) {
> >               kfd->device_info.doorbell_size = 8;
> >               kfd->device_info.ih_ring_entry_size = 8 * sizeof(uint32_t);
> > -             kfd->device_info.event_interrupt_class =
> > &event_interrupt_class_v9;
> >               kfd->device_info.supports_cwsr = true;
> >
> > -             if ((sdma_version >= IP_VERSION(4, 0, 0)  &&
> > -                  sdma_version <= IP_VERSION(4, 2, 0)) ||
> > -                  sdma_version == IP_VERSION(5, 2, 1)  ||
> > -                  sdma_version == IP_VERSION(5, 2, 3))
> > -                     kfd->device_info.num_sdma_queues_per_engine =
> > 2;
> > -             else
> > -                     kfd->device_info.num_sdma_queues_per_engine =
> > 8;
> > +             kfd_device_info_set_sdma_queue_num(kfd);
> > +
> > +             kfd_device_info_set_event_interrupt_class(kfd);
> >
> >               /* Raven */
> >               if (gc_version == IP_VERSION(9, 1, 0) ||
> > --
> > 2.17.1
> 


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