From: Akhil P Oommen <quic_akhilpo@quicinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Rob Clark <robdclark@gmail.com>
Cc: freedreno <freedreno@lists.freedesktop.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
"OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
"Abhinav Kumar" <quic_abhinavk@quicinc.com>,
"Christian König" <christian.koenig@amd.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"David Airlie" <airlied@linux.ie>,
"Jonathan Marek" <jonathan@marek.ca>,
"Jordan Crouse" <jordan@cosmicpenguin.net>,
"Sai Prakash Ranjan" <saiprakash.ranjan@codeaurora.org>,
"Sean Paul" <sean@poorly.run>,
"Stephen Boyd" <swboyd@chromium.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/4] drm/msm/adreno: Expose speedbin to userspace
Date: Mon, 17 Jan 2022 20:08:15 +0530 [thread overview]
Message-ID: <bd284863-3643-4a8e-beb6-f47cc60ea1b5@quicinc.com> (raw)
In-Reply-To: <CAA8EJpokgiUbqj9BOF52a9QjJK53PinNHfxy_6nbNq53JnO2Og@mail.gmail.com>
On 1/13/2022 12:43 PM, Dmitry Baryshkov wrote:
> On Thu, 13 Jan 2022 at 00:19, Rob Clark <robdclark@gmail.com> wrote:
>> On Tue, Jan 11, 2022 at 1:31 PM Akhil P Oommen <quic_akhilpo@quicinc.com> wrote:
>>> Expose speedbin through MSM_PARAM_CHIP_ID parameter to help userspace
>>> identify the sku.
>>>
>>> Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
>>> ---
>>>
>>> drivers/gpu/drm/msm/adreno/adreno_gpu.c | 9 +++++----
>>> 1 file changed, 5 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
>>> index f33cfa4..e970e6a 100644
>>> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
>>> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
>>> @@ -242,10 +242,11 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
>>> *value = !adreno_is_a650_family(adreno_gpu) ? 0x100000 : 0;
>>> return 0;
>>> case MSM_PARAM_CHIP_ID:
>>> - *value = adreno_gpu->rev.patchid |
>>> - (adreno_gpu->rev.minor << 8) |
>>> - (adreno_gpu->rev.major << 16) |
>>> - (adreno_gpu->rev.core << 24);
>>> + *value = (uint64_t) adreno_gpu->rev.patchid |
>>> + (uint64_t) (adreno_gpu->rev.minor << 8) |
>>> + (uint64_t) (adreno_gpu->rev.major << 16) |
>>> + (uint64_t) (adreno_gpu->rev.core << 24) |
>>> + (((uint64_t) adreno_gpu->rev.sku) << 32);
>> How about this instead, so we are only changing the behavior for
>> new/unreleased devices:
I thought this property was only used for new devices whereas the
existing devices rely on REVN.
-Akhil.
>>
>> *value = adreno_gpu->rev.patchid |
>> (adreno_gpu->rev.minor << 8) |
>> (adreno_gpu->rev.major << 16) |
>> (adreno_gpu->rev.core << 24);
>> if (!adreno_gpu->info->revn)
>> *value |= (((uint64_t) adreno_gpu->rev.sku) << 32);
>>
>> (sorry about the butchered indentation.. somehow gmail has become
>> antagonistic about pasting code)
> I assume that you would like to keep userspace compat for older chips.
> thus the if.
> Maybe we should introduce MSM_PARAM_CHIP_ID_SKU instead (and gradually
> make userspace switch to it)?
>
>> BR,
>> -R
>>
>>> return 0;
>>> case MSM_PARAM_MAX_FREQ:
>>> *value = adreno_gpu->base.fast_rate;
>>> --
>>> 2.7.4
>>>
>
>
next prev parent reply other threads:[~2022-01-17 14:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 21:31 [PATCH 1/4] drm/msm/adreno: Add support for Adreno 8c Gen 3 Akhil P Oommen
2022-01-11 21:31 ` [PATCH 2/4] arm64: dts: qcom: sc7280: Support gpu speedbin Akhil P Oommen
2022-01-11 21:31 ` [PATCH 3/4] drm/msm/adreno: Expose speedbin to userspace Akhil P Oommen
2022-01-12 21:19 ` Rob Clark
2022-01-13 7:13 ` Dmitry Baryshkov
2022-01-17 14:38 ` Akhil P Oommen [this message]
2022-01-17 18:52 ` Rob Clark
2022-01-11 21:31 ` [PATCH 4/4] drm/msm/adreno: Update the name of 7c3 gpu Akhil P Oommen
2022-01-11 22:57 ` [PATCH 1/4] drm/msm/adreno: Add support for Adreno 8c Gen 3 Rob Clark
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