[PATCH 7/7] drm/amdgpu: Use new doorbell layout for vega20 and future asic

Zeng, Oak Oak.Zeng at amd.com
Fri Nov 23 19:38:15 UTC 2018


Hi Alex,

It is strange I didn't get your email on Wednesday. I will add one patch to move all the doorbell definitions to a separate amdgpu_doorbell.h

Regards,
Oak

From: Deucher, Alexander <Alexander.Deucher at amd.com>
Sent: Friday, November 23, 2018 1:57 PM
To: Alex Deucher <alexdeucher at gmail.com>; Zeng, Oak <Oak.Zeng at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>
Cc: amd-gfx list <amd-gfx at lists.freedesktop.org>
Subject: Re: [PATCH 7/7] drm/amdgpu: Use new doorbell layout for vega20 and future asic


The main idea is to be able to use different layouts on different asics that may share the same IP code.



Alex

________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org<mailto:amd-gfx-bounces at lists.freedesktop.org>> on behalf of Christian K├Ânig <ckoenig.leichtzumerken at gmail.com<mailto:ckoenig.leichtzumerken at gmail.com>>
Sent: Thursday, November 22, 2018 4:26:53 AM
To: Alex Deucher; Zeng, Oak
Cc: amd-gfx list
Subject: Re: [PATCH 7/7] drm/amdgpu: Use new doorbell layout for vega20 and future asic

Am 21.11.18 um 17:39 schrieb Alex Deucher:
> On Wed, Nov 21, 2018 at 11:37 AM Zeng, Oak <Oak.Zeng at amd.com<mailto:Oak.Zeng at amd.com>> wrote:
>>> No need to add a new file for this.  Just add this to vega20_reg_init.c.
>> Agreed.
>>
>>> Also, please use the doorbell enums rather than hardcoding the numbers.
>> Ok. Where should I put the doorbell enums for vega20? In amdgpu.h or in vega20_reg_init.c?
> Maybe add amdgpu_doorbell.h and move all of the enums there?

Mhm, isn't part of the goal of this work to get rid of the enums?

I mean when we have a structure to hold the indexes to we really need
the enums any more? I don't think so.

Christian.

>
> Alex
>
>> thanks,
>> Oak
>>
>> -----Original Message-----
>> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org<mailto:amd-gfx-bounces at lists.freedesktop.org>> On Behalf Of Alex Deucher
>> Sent: Wednesday, November 21, 2018 11:22 AM
>> To: Zeng, Oak <Oak.Zeng at amd.com<mailto:Oak.Zeng at amd.com>>
>> Cc: Zeng, Oak <Oak.Zeng at amd.com<mailto:Oak.Zeng at amd.com>>; amd-gfx list <amd-gfx at lists.freedesktop.org<mailto:amd-gfx at lists.freedesktop.org>>
>> Subject: Re: [PATCH 7/7] drm/amdgpu: Use new doorbell layout for vega20 and future asic
>>
>> On Wed, Nov 21, 2018 at 10:52 AM Oak Zeng <ozeng at amd.com<mailto:ozeng at amd.com>> wrote:
>>> Change-Id: I04d22fb717ac50483c0835f160a2e860e344f358
>>> Signed-off-by: Oak Zeng <ozeng at amd.com<mailto:ozeng at amd.com>>
>>> Suggested-by: Felix Kuehling <Felix.Kuehling at amd.com<mailto:Felix.Kuehling at amd.com>>
>>> Suggested-by: Alex Deucher <alexander.deucher at amd.com<mailto:alexander.deucher at amd.com>>
>>> ---
>>>   drivers/gpu/drm/amd/amdgpu/Makefile                |  4 +-
>>>   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c         |  4 +-
>>>   drivers/gpu/drm/amd/amdgpu/soc15.h                 |  1 +
>>>   .../drm/amd/amdgpu/vega20_doorbell_index_init.c    | 64 ++++++++++++++++++++++
>>>   4 files changed, 70 insertions(+), 3 deletions(-)  create mode 100644
>>> drivers/gpu/drm/amd/amdgpu/vega20_doorbell_index_init.c
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile
>>> b/drivers/gpu/drm/amd/amdgpu/Makefile
>>> index 3ab8eba..b3b150b 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
>>> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
>>> @@ -63,8 +63,8 @@ amdgpu-$(CONFIG_DRM_AMDGPU_SI)+= si.o gmc_v6_0.o
>>> gfx_v6_0.o si_ih.o si_dma.o dce
>>>
>>>   amdgpu-y += \
>>>          vi.o mxgpu_vi.o nbio_v6_1.o soc15.o emu_soc.o mxgpu_ai.o nbio_v7_0.o vega10_reg_init.o \
>>> -       vega20_reg_init.o nbio_v7_4.o vega10_doorbell_index_init.o vega12_doorbell_index_init.o \
>>> -       vi_doorbell_index_init.o
>>> +       vega20_reg_init.o nbio_v7_4.o vi_doorbell_index_init.o vega10_doorbell_index_init.o \
>>> +       vega12_doorbell_index_init.o vega20_doorbell_index_init.o
>>>
>>>   # add DF block
>>>   amdgpu-y += \
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>> index 3ffd8f5..19f2149 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>> @@ -517,8 +517,10 @@ static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
>>>                  vi_doorbell_index_init(adev);
>>>          else if (adev->asic_type == CHIP_VEGA10)
>>>                  vega10_doorbell_index_init(adev);
>>> -       else
>>> +       else if (adev->asic_type == CHIP_VEGA12 || adev->asic_type ==
>>> + CHIP_RAVEN)
>>>                  vega12_doorbell_index_init(adev);
>>> +       else
>>> +               vega20_doorbell_index_init(adev);
>>>
>>>          /* No doorbell on SI hardware generation */
>>>          if (adev->asic_type < CHIP_BONAIRE) { diff --git
>>> a/drivers/gpu/drm/amd/amdgpu/soc15.h
>>> b/drivers/gpu/drm/amd/amdgpu/soc15.h
>>> index 939c0e8..6ba0d26 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/soc15.h
>>> +++ b/drivers/gpu/drm/amd/amdgpu/soc15.h
>>> @@ -60,4 +60,5 @@ int vega20_reg_base_init(struct amdgpu_device
>>> *adev);
>>>
>>>   void vega10_doorbell_index_init(struct amdgpu_device *adev);  void
>>> vega12_doorbell_index_init(struct amdgpu_device *adev);
>>> +void vega20_doorbell_index_init(struct amdgpu_device *adev);
>>>   #endif
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_doorbell_index_init.c
>>> b/drivers/gpu/drm/amd/amdgpu/vega20_doorbell_index_init.c
>>> new file mode 100644
>>> index 0000000..dcaef7f
>>> --- /dev/null
>>> +++ b/drivers/gpu/drm/amd/amdgpu/vega20_doorbell_index_init.c
>>> @@ -0,0 +1,64 @@
>>> +/*
>>> + * Copyright 2018 Advanced Micro Devices, Inc.
>>> + *
>>> + * Permission is hereby granted, free of charge, to any person
>>> +obtaining a
>>> + * copy of this software and associated documentation files (the
>>> +"Software"),
>>> + * to deal in the Software without restriction, including without
>>> +limitation
>>> + * the rights to use, copy, modify, merge, publish, distribute,
>>> +sublicense,
>>> + * and/or sell copies of the Software, and to permit persons to whom
>>> +the
>>> + * Software is furnished to do so, subject to the following conditions:
>>> + *
>>> + * The above copyright notice and this permission notice shall be
>>> +included in
>>> + * all copies or substantial portions of the Software.
>>> + *
>>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>>> +EXPRESS OR
>>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>>> +MERCHANTABILITY,
>>> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT
>>> +SHALL
>>> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM,
>>> +DAMAGES OR
>>> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>>> +OTHERWISE,
>>> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
>>> +OR
>>> + * OTHER DEALINGS IN THE SOFTWARE.
>>> + *
>>> + */
>>> +
>>> +#include "amdgpu.h"
>>> +
>>> +void vega20_doorbell_index_init(struct amdgpu_device *adev) {
>>> +       /* Compute + GFX: 0~255 */
>>> +       adev->doorbell_index.kiq = 0x00;
>>> +       adev->doorbell_index.mec_ring0 = 0x03;
>>> +       adev->doorbell_index.mec_ring1 = 0x04;
>>> +       adev->doorbell_index.mec_ring2 = 0x05;
>>> +       adev->doorbell_index.mec_ring3 = 0x06;
>>> +       adev->doorbell_index.mec_ring4 = 0x07;
>>> +       adev->doorbell_index.mec_ring5 = 0x08;
>>> +       adev->doorbell_index.mec_ring6 = 0x09;
>>> +       adev->doorbell_index.mec_ring7 = 0x0a;
>>> +       adev->doorbell_index.userqueue_start = 0x0b;
>>> +       adev->doorbell_index.userqueue_end = 0x8a;
>>> +       adev->doorbell_index.gfx_ring0 = 0x8b;
>>> +       /* SDMA:256~335*/
>>> +       adev->doorbell_index.sdma_engine0 = 0x100;
>>> +       adev->doorbell_index.sdma_engine1 = 0x10a;
>>> +       adev->doorbell_index.sdma_engine2 = 0x114;
>>> +       adev->doorbell_index.sdma_engine3 = 0x11e;
>>> +       adev->doorbell_index.sdma_engine4 = 0x128;
>>> +       adev->doorbell_index.sdma_engine5 = 0x132;
>>> +       adev->doorbell_index.sdma_engine6 = 0x13C;
>>> +       adev->doorbell_index.sdma_engine7 = 0x146;
>>> +       /* IH: 376~391 */
>>> +       adev->doorbell_index.ih = 0x178;
>>> +       /* MMSCH: 392~407 */
>>> +       adev->doorbell_index.uvd_vce.uvd_ring0_1 = 0x188;
>>> +       adev->doorbell_index.uvd_vce.uvd_ring2_3 = 0x189;
>>> +       adev->doorbell_index.uvd_vce.uvd_ring4_5 = 0x18a;
>>> +       adev->doorbell_index.uvd_vce.uvd_ring6_7 = 0x18b;
>>> +       adev->doorbell_index.uvd_vce.vce_ring0_1 = 0x18c;
>>> +       adev->doorbell_index.uvd_vce.vce_ring2_3 = 0x18d;
>>> +       adev->doorbell_index.uvd_vce.vce_ring4_5 = 0x18e;
>>> +       adev->doorbell_index.uvd_vce.vce_ring6_7 = 0x18f;
>>> +       /* In unit of dword doorbell */
>>> +       adev->doorbell_index.max_assignment = 0x18f << 1; }
>> No need to add a new file for this.  Just add this to vega20_reg_init.c.  Also, please use the doorbell enums rather than hardcoding the numbers.
>>
>> Alex
>>
>>> +
>>> --
>>> 2.7.4
>>>
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