[RFC v4 02/11] drm/amdgpu: Move scheduler init to after XGMI is ready

[Andrey Grodzovsky]

No because all the patch-set including this patch was landed into 
drm-misc-next and will reach amd-staging-drm-next on the next upstream 
rebase i guess.

Andrey

On 2022-02-24 01:47, JingWen Chen wrote:
> Hi Andrey,
>
> Will you port this patch into amd-staging-drm-next?
>
> on 2/10/22 2:06 AM, Andrey Grodzovsky wrote:
>> All comments are fixed and code pushed. Thanks for everyone
>> who helped reviewing.
>>
>> Andrey
>>
>> On 2022-02-09 02:53, Christian König wrote:
>>> Am 09.02.22 um 01:23 schrieb Andrey Grodzovsky:
>>>> Before we initialize schedulers we must know which reset
>>>> domain are we in - for single device there iis a single
>>>> domain per device and so single wq per device. For XGMI
>>>> the reset domain spans the entire XGMI hive and so the
>>>> reset wq is per hive.
>>>>
>>>> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
>>> One more comment below, with that fixed Reviewed-by: Christian König <christian.koenig at amd.com>.
>>>
>>>> ---
>>>>    drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 45 ++++++++++++++++++++++
>>>>    drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c  | 34 ++--------------
>>>>    drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h   |  2 +
>>>>    3 files changed, 51 insertions(+), 30 deletions(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>> index 9704b0e1fd82..00123b0013d3 100644
>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>> @@ -2287,6 +2287,47 @@ static int amdgpu_device_fw_loading(struct amdgpu_device *adev)
>>>>        return r;
>>>>    }
>>>>    +static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
>>>> +{
>>>> +    long timeout;
>>>> +    int r, i;
>>>> +
>>>> +    for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
>>>> +        struct amdgpu_ring *ring = adev->rings[i];
>>>> +
>>>> +        /* No need to setup the GPU scheduler for rings that don't need it */
>>>> +        if (!ring || ring->no_scheduler)
>>>> +            continue;
>>>> +
>>>> +        switch (ring->funcs->type) {
>>>> +        case AMDGPU_RING_TYPE_GFX:
>>>> +            timeout = adev->gfx_timeout;
>>>> +            break;
>>>> +        case AMDGPU_RING_TYPE_COMPUTE:
>>>> +            timeout = adev->compute_timeout;
>>>> +            break;
>>>> +        case AMDGPU_RING_TYPE_SDMA:
>>>> +            timeout = adev->sdma_timeout;
>>>> +            break;
>>>> +        default:
>>>> +            timeout = adev->video_timeout;
>>>> +            break;
>>>> +        }
>>>> +
>>>> +        r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
>>>> +                   ring->num_hw_submission, amdgpu_job_hang_limit,
>>>> +                   timeout, adev->reset_domain.wq, ring->sched_score, ring->name);
>>>> +        if (r) {
>>>> +            DRM_ERROR("Failed to create scheduler on ring %s.\n",
>>>> +                  ring->name);
>>>> +            return r;
>>>> +        }
>>>> +    }
>>>> +
>>>> +    return 0;
>>>> +}
>>>> +
>>>> +
>>>>    /**
>>>>     * amdgpu_device_ip_init - run init for hardware IPs
>>>>     *
>>>> @@ -2419,6 +2460,10 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
>>>>            }
>>>>        }
>>>>    +    r = amdgpu_device_init_schedulers(adev);
>>>> +    if (r)
>>>> +        goto init_failed;
>>>> +
>>>>        /* Don't init kfd if whole hive need to be reset during init */
>>>>        if (!adev->gmc.xgmi.pending_reset)
>>>>            amdgpu_amdkfd_device_init(adev);
>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>>>> index 45977a72b5dd..fa302540c69a 100644
>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>>>> @@ -457,8 +457,6 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
>>>>                      atomic_t *sched_score)
>>>>    {
>>>>        struct amdgpu_device *adev = ring->adev;
>>>> -    long timeout;
>>>> -    int r;
>>>>          if (!adev)
>>>>            return -EINVAL;
>>>> @@ -478,36 +476,12 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
>>>>        spin_lock_init(&ring->fence_drv.lock);
>>>>        ring->fence_drv.fences = kcalloc(num_hw_submission * 2, sizeof(void *),
>>>>                         GFP_KERNEL);
>>>> -    if (!ring->fence_drv.fences)
>>>> -        return -ENOMEM;
>>>>    -    /* No need to setup the GPU scheduler for rings that don't need it */
>>>> -    if (ring->no_scheduler)
>>>> -        return 0;
>>>> +    ring->num_hw_submission = num_hw_submission;
>>>> +    ring->sched_score = sched_score;
>>> Let's move this into the caller and then use ring->num_hw_submission in the fence code as well.
>>>
>>> The maximum number of jobs on the ring is not really fence specific.
>>>
>>> Regards,
>>> Christian.
>>>
>>>>    -    switch (ring->funcs->type) {
>>>> -    case AMDGPU_RING_TYPE_GFX:
>>>> -        timeout = adev->gfx_timeout;
>>>> -        break;
>>>> -    case AMDGPU_RING_TYPE_COMPUTE:
>>>> -        timeout = adev->compute_timeout;
>>>> -        break;
>>>> -    case AMDGPU_RING_TYPE_SDMA:
>>>> -        timeout = adev->sdma_timeout;
>>>> -        break;
>>>> -    default:
>>>> -        timeout = adev->video_timeout;
>>>> -        break;
>>>> -    }
>>>> -
>>>> -    r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
>>>> -               num_hw_submission, amdgpu_job_hang_limit,
>>>> -               timeout, NULL, sched_score, ring->name);
>>>> -    if (r) {
>>>> -        DRM_ERROR("Failed to create scheduler on ring %s.\n",
>>>> -              ring->name);
>>>> -        return r;
>>>> -    }
>>>> +    if (!ring->fence_drv.fences)
>>>> +        return -ENOMEM;
>>>>          return 0;
>>>>    }
>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>>>> index fae7d185ad0d..7f20ce73a243 100644
>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
>>>> @@ -251,6 +251,8 @@ struct amdgpu_ring {
>>>>        bool            has_compute_vm_bug;
>>>>        bool            no_scheduler;
>>>>        int            hw_prio;
>>>> +    unsigned         num_hw_submission;
>>>> +    atomic_t        *sched_score;
>>>>    };
>>>>      #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))