linux-kernel - [PATCH RFC v2 15/17] RISC-V: QoS: add Cache ID and Prox Dom to CBQRI controllers

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Message-Id: <20260128-ssqosid-cbqri-v2-15-dca586b091b9@kernel.org>
Date: Wed, 28 Jan 2026 12:27:36 -0800
From: Drew Fustini <fustini@...nel.org>
To: Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>, 
 Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, 
 Radim Krčmář <rkrcmar@...tanamicro.com>, 
 Samuel Holland <samuel.holland@...ive.com>, 
 Adrien Ricciardi <aricciardi@...libre.com>, 
 Nicolas Pitre <npitre@...libre.com>, 
 Kornel Dulęba <mindal@...ihalf.com>, 
 Atish Patra <atish.patra@...ux.dev>, 
 Atish Kumar Patra <atishp@...osinc.com>, 
 Vasudevan Srinivasan <vasu@...osinc.com>, Ved Shanbhogue <ved@...osinc.com>, 
 yunhui cui <cuiyunhui@...edance.com>, Chen Pei <cp0613@...ux.alibaba.com>, 
 Liu Zhiwei <zhiwei_liu@...ux.alibaba.com>, Weiwei Li <liwei1518@...il.com>, 
 guo.wenjia23@....com.cn, liu.qingtao2@....com.cn, 
 Reinette Chatre <reinette.chatre@...el.com>, 
 Tony Luck <tony.luck@...el.com>, Babu Moger <babu.moger@....com>, 
 Peter Newman <peternewman@...gle.com>, Fenghua Yu <fenghua.yu@...el.com>, 
 James Morse <james.morse@....com>, Ben Horgan <ben.horgan@....com>, 
 Dave Martin <Dave.Martin@....com>, Drew Fustini <fustini@...nel.org>, 
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 x86@...nel.org, Rob Herring <robh@...nel.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
 Robert Moore <robert.moore@...el.com>, Sunil V L <sunilvl@...tanamicro.com>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Paul Walmsley <paul.walmsley@...ive.com>, linux-acpi@...r.kernel.org, 
 acpica-devel@...ts.linux.dev, devicetree@...r.kernel.org
Subject: [PATCH RFC v2 15/17] RISC-V: QoS: add Cache ID and Prox Dom to
 CBQRI controllers

Expand cbqri_controller_info to contain:

 - Cache ID from the PPTT table's Cache Type Structure
 - Proximity Domain from SRAT table Memory Affifinty Controller

Signed-off-by: Drew Fustini <fustini@...nel.org>
---
 include/linux/riscv_qos.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/riscv_qos.h b/include/linux/riscv_qos.h
index 0c551ed85fe1..4812b6811327 100644
--- a/include/linux/riscv_qos.h
+++ b/include/linux/riscv_qos.h
@@ -27,7 +27,14 @@ struct cbqri_controller_info {
 		u32 cache_level;
 		u32 cache_size; /* in bytes */
 		struct cpumask cpu_mask;
+		// Unique Cache ID from the PPTT table's Cache Type Structure
+		u32 cache_id;
 	} cache;
+
+	struct mem_controller {
+		// Proximity Domain from SRAT table Memory Affifinty Controller
+		u32 prox_dom;
+	} mem;
 };

 extern struct list_head cbqri_controllers;

-- 
2.43.0