[PATCH] drm/amdkfd: enable grace period for xcp instance

[Eric Huang]

OK. Mukul, I will resend this patch based on top of yours.

Regards,
Eric

On 2023-07-10 18:24, Joshi, Mukul wrote:
> [AMD Official Use Only - General]
>
>> -----Original Message-----
>> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Eric
>> Huang
>> Sent: Monday, July 10, 2023 3:46 PM
>> To: amd-gfx at lists.freedesktop.org
>> Cc: Huang, JinHuiEric <JinHuiEric.Huang at amd.com>; Kim, Jonathan
>> <Jonathan.Kim at amd.com>
>> Subject: [PATCH] drm/amdkfd: enable grace period for xcp instance
>>
>> Caution: This message originated from an External Source. Use proper caution
>> when opening attachments, clicking links, or responding.
>>
>>
>> Read/write grace period from/to first xcc instance of xcp in kfd node.
>>
> Hi Eric,
>
> My patch, "drm/amdkfd: Update CWSR grace period for GFX9.4.3", which got missed during the merge
> should handle most of what you are trying to do.
> I will push that patch. Please add on top if there is anything missing.
>
> Hope that works for you.
>
> Thanks,
> Mukul
>
>> Signed-off-by: Eric Huang <jinhuieric.huang at amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 11
>> ++++++++---  drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h |
>> 2 +-
>>   drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c    | 10 +++++++---
>>   3 files changed, 16 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
>> b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
>> index de83eccdd9de..a95bcb91dc09 100644
>> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
>> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
>> @@ -1619,10 +1619,15 @@ static int initialize_cpsch(struct
>> device_queue_manager *dqm)
>>
>>          init_sdma_bitmaps(dqm);
>>
>> -       if (dqm->dev->kfd2kgd->get_iq_wait_times)
>> +       if (dqm->dev->kfd2kgd->get_iq_wait_times) {
>> +               u32 inst = ffs(dqm->dev->xcc_mask &
>> +                              (1UL <<
>> +                              dqm->dev->xcp->id *
>> +                              dqm->dev->adev->gfx.num_xcc_per_xcp)) -
>> + 1;
>>                  dqm->dev->kfd2kgd->get_iq_wait_times(dqm->dev->adev,
>> -                                       &dqm->wait_times,
>> -                                       0);
>> +                                       &dqm->wait_times[inst],
>> +                                       inst);
>> +       }
>>          return 0;
>>   }
>>
>> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
>> b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
>> index 7dd4b177219d..45959c33b944 100644
>> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
>> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
>> @@ -262,7 +262,7 @@ struct device_queue_manager {
>>          /* used for GFX 9.4.3 only */
>>          uint32_t                current_logical_xcc_start;
>>
>> -       uint32_t                wait_times;
>> +       uint32_t                wait_times[MAX_XCP];
>>
>>          wait_queue_head_t       destroy_wait;
>>   };
>> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
>> b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
>> index 8fda16e6fee6..dd50164c16cd 100644
>> --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
>> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
>> @@ -292,17 +292,21 @@ static int pm_set_grace_period_v9(struct
>> packet_manager *pm,
>>          struct pm4_mec_write_data_mmio *packet;
>>          uint32_t reg_offset = 0;
>>          uint32_t reg_data = 0;
>> +       uint32_t inst = ffs(pm->dqm->dev->xcc_mask &
>> +                           (1UL <<
>> +                           pm->dqm->dev->xcp->id *
>> +                           pm->dqm->dev->adev->gfx.num_xcc_per_xcp)) -
>> + 1;
>>
>>          pm->dqm->dev->kfd2kgd->build_grace_period_packet_info(
>>                          pm->dqm->dev->adev,
>> -                       pm->dqm->wait_times,
>> +                       pm->dqm->wait_times[inst],
>>                          grace_period,
>>                          &reg_offset,
>>                          &reg_data,
>> -                       0);
>> +                       inst);
>>
>>          if (grace_period == USE_DEFAULT_GRACE_PERIOD)
>> -               reg_data = pm->dqm->wait_times;
>> +               reg_data = pm->dqm->wait_times[inst];
>>
>>          packet = (struct pm4_mec_write_data_mmio *)buffer;
>>          memset(buffer, 0, sizeof(struct pm4_mec_write_data_mmio));
>> --
>> 2.34.1