[PATCH RFC 04/19] RISC-V: QoS: define properties of CBQRI controllers

[Drew Fustini]

Define data structure to represent the CBQRI properties that a driver
for an CBQRI-capable controller would discover during probe.

Each instance of a CBQRI-capable controller is added to a list that the
RISC-V CBQRI resctrl implementation will consume.

Co-developed-by: Adrien Ricciardi <aricciardi at baylibre.com>
Signed-off-by: Adrien Ricciardi <aricciardi at baylibre.com>
Signed-off-by: Drew Fustini <fustini at kernel.org>
---
 MAINTAINERS               |  1 +
 include/linux/riscv_qos.h | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index e98d553bd0ca..31e536304972 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22511,6 +22511,7 @@ L:	linux-riscv at lists.infradead.org
 S:	Supported
 F:	arch/riscv/include/asm/qos.h
 F:	arch/riscv/kernel/qos/
+F:	include/linux/riscv_qos.h
 
 RISC-V RPMI AND MPXY DRIVERS
 M:	Rahul Pathak <rahul at summations.net>
diff --git a/include/linux/riscv_qos.h b/include/linux/riscv_qos.h
new file mode 100644
index 000000000000..51c3a96bbcd0
--- /dev/null
+++ b/include/linux/riscv_qos.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __LINUX_RISCV_QOS_H
+#define __LINUX_RISCV_QOS_H
+
+#include <linux/iommu.h>
+#include <linux/types.h>
+
+#include <asm/qos.h>
+
+enum cbqri_controller_type {
+	CBQRI_CONTROLLER_TYPE_CAPACITY,
+	CBQRI_CONTROLLER_TYPE_BANDWIDTH,
+	CBQRI_CONTROLLER_TYPE_UNKNOWN
+};
+
+struct cbqri_controller_info {
+	unsigned long addr;
+	unsigned long size;
+	enum cbqri_controller_type type;
+	u32 rcid_count;
+	u32 mcid_count;
+	struct list_head list;
+
+	struct cache_controller {
+		u32 cache_level;
+		u32 cache_size; /* in bytes */
+		struct cpumask cpu_mask;
+	} cache;
+};
+
+extern struct list_head cbqri_controllers;
+
+#endif /* __LINUX_RISCV_QOS_H */

-- 
2.43.0