linux-kernel - Re: [PATCH v2 3/4] soc: qcom: llcc-qcom: Add support for SM8750

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Message-ID: <44553d96-d1c4-4cd9-88ee-5d3bd7227715@oss.qualcomm.com>
Date: Tue, 11 Mar 2025 11:17:58 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Melody Olvera <quic_molvera@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Conor Dooley <conor@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Satya Durga Srinivasu Prabhala <quic_satyap@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/4] soc: qcom: llcc-qcom: Add support for SM8750

On 3/4/25 11:23 PM, Melody Olvera wrote:
> Add system cache table and configs for SM8750 SoCs.
> 
> Signed-off-by: Melody Olvera <quic_molvera@...cinc.com>
> ---

[...]

> +		.usecase_id = LLCC_MODPE,
> +		.slice_id = 29,
> +		.max_cap = 256,
> +		.priority = 1,
> +		.fixed_size = true,
> +		.bonus_ways = 0xf0000000,
> +		.ovcap_prio = true,

ovcap_prio = false, alloc_oneway_en = true

> +	}, {
> +		.usecase_id = LLCC_WRCACHE,
> +		.slice_id = 31,
> +		.max_cap = 512,
> +		.priority = 1,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,

.activate_on_init = true,

[...]

> +		.usecase_id = LLCC_LCPDARE,
> +		.slice_id = 30,
> +		.max_cap = 128,
> +		.priority = 5,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.activate_on_init = true,
> +		.ovcap_prio = true,

ovcap_prio = false, alloc_oneway_en = true

[...]

> +		.usecase_id = LLCC_VIDVSP,
> +		.slice_id = 4,
> +		.max_cap = 256,
> +		.priority = 4,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +	}, {
> +		.usecase_id = LLCC_VIDDEC,
> +		.slice_id = 5,
> +		.max_cap = 6144,
> +		.priority = 4,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.cache_mode = 2,
> +		.vict_prio = true,

.vict_prio = false, .overcap_prio = true

> +	}, {
> +		.usecase_id = LLCC_CAMOFE,
> +		.slice_id = 33,
> +		.max_cap = 6144,
> +		.priority = 4,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.mru_uncap_en = true,
> +		.vict_prio = true,

.mru_uncap_en = false, stale_en = true
.vict_prio = false, .overcap_prio = true

> +	}, {
> +		.usecase_id = LLCC_CAMRTIP,
> +		.slice_id = 13,
> +		.max_cap = 1024,
> +		.priority = 4,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.mru_uncap_en = true,
> +		.vict_prio = true,

same

> +	}, {
> +		.usecase_id = LLCC_CAMSRTIP,
> +		.slice_id = 14,
> +		.max_cap = 6144,
> +		.priority = 4,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.mru_uncap_en = true,
> +		.vict_prio = true,

same

> +	}, {
> +		.usecase_id = LLCC_CAMRTRF,
> +		.slice_id = 7,
> +		.max_cap = 3584,
> +		.priority = 1,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.mru_uncap_en = true,
> +		.vict_prio = true,

same

> +	}, {
> +		.usecase_id = LLCC_CAMSRTRF,
> +		.slice_id = 21,
> +		.max_cap = 6144,
> +		.priority = 1,
> +		.fixed_size = true,
> +		.bonus_ways = 0xffffffff,
> +		.mru_uncap_en = true,
> +		.vict_prio = true,

same


Apart from that, it looks like there's some sort of grouping / parent-child
relationships involved in this thing - do we need more sw changes for that?

Konrad