[PATCH RFC 07/19] RISC-V: QoS: define prototypes for resctrl interface

[Drew Fustini]

Define the prototypes for the resctrl interface functions that are
implemented on RISC-V.

Co-developed-by: Adrien Ricciardi <aricciardi at baylibre.com>
Signed-off-by: Adrien Ricciardi <aricciardi at baylibre.com>
[fustini: rebased on riscv/for-next]
Signed-off-by: Drew Fustini <fustini at kernel.org>
---
 include/linux/riscv_qos.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/include/linux/riscv_qos.h b/include/linux/riscv_qos.h
index 51c3a96bbcd0..0c551ed85fe1 100644
--- a/include/linux/riscv_qos.h
+++ b/include/linux/riscv_qos.h
@@ -3,6 +3,7 @@
 #ifndef __LINUX_RISCV_QOS_H
 #define __LINUX_RISCV_QOS_H
 
+#include <linux/resctrl_types.h>
 #include <linux/iommu.h>
 #include <linux/types.h>
 
@@ -31,4 +32,47 @@ struct cbqri_controller_info {
 
 extern struct list_head cbqri_controllers;
 
+bool resctrl_arch_alloc_capable(void);
+bool resctrl_arch_mon_capable(void);
+bool resctrl_arch_is_llc_occupancy_enabled(void);
+bool resctrl_arch_is_mbm_local_enabled(void);
+bool resctrl_arch_is_mbm_total_enabled(void);
+
+struct rdt_resource;
+/*
+ * Note about terminology between x86 (Intel RDT/AMD QoS) and RISC-V:
+ *   CLOSID on x86 is RCID on RISC-V
+ *     RMID on x86 is MCID on RISC-V
+ *      CDP on x86 is AT (access type) on RISC-V
+ */
+u32  resctrl_arch_rmid_idx_encode(u32 closid, u32 rmid);
+void resctrl_arch_rmid_idx_decode(u32 idx, u32 *closid, u32 *rmid);
+void resctrl_arch_set_cpu_default_closid_rmid(int cpu, u32 closid, u32 pmg);
+void resctrl_arch_sched_in(struct task_struct *tsk);
+void resctrl_arch_set_closid_rmid(struct task_struct *tsk, u32 closid, u32 rmid);
+bool resctrl_arch_match_closid(struct task_struct *tsk, u32 closid);
+bool resctrl_arch_match_rmid(struct task_struct *tsk, u32 closid, u32 rmid);
+void resctrl_arch_reset_resources(void);
+void *resctrl_arch_mon_ctx_alloc(struct rdt_resource *r, enum resctrl_event_id evtid);
+void resctrl_arch_mon_ctx_free(struct rdt_resource *r, enum resctrl_event_id evtid,
+			       void *arch_mon_ctx);
+struct rdt_domain_hdr *resctrl_arch_find_domain(struct list_head *domain_list, int id);
+
+static inline bool resctrl_arch_event_is_free_running(enum resctrl_event_id evt)
+{
+	/* must be true for resctrl L3 monitoring files to be created */
+	return true;
+}
+
+static inline unsigned int resctrl_arch_round_mon_val(unsigned int val)
+{
+	return val;
+}
+
+/* Not needed for RISC-V */
+static inline void resctrl_arch_enable_mon(void) { }
+static inline void resctrl_arch_disable_mon(void) { }
+static inline void resctrl_arch_enable_alloc(void) { }
+static inline void resctrl_arch_disable_alloc(void) { }
+
 #endif /* __LINUX_RISCV_QOS_H */

-- 
2.43.0