Commit 5616897e authored by Paul Burton's avatar Paul Burton Committed by Ralf Baechle

MIPS: Add CPU cluster number accessors

Introduce cpu_cluster() & cpu_set_cluster() accessor functions in the
same vein as cpu_core(), cpu_vpe_id() & their set variants. These will
be used in further patches to allow users to get or set a CPUs cluster
number.
Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17012/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent fe7a38c6
......@@ -139,6 +139,16 @@ struct proc_cpuinfo_notifier_args {
unsigned long n;
};
static inline unsigned int cpu_cluster(struct cpuinfo_mips *cpuinfo)
{
/* Optimisation for systems where multiple clusters aren't used */
if (!IS_ENABLED(CONFIG_CPU_MIPSR6))
return 0;
return (cpuinfo->globalnumber & MIPS_GLOBALNUMBER_CLUSTER) >>
MIPS_GLOBALNUMBER_CLUSTER_SHF;
}
static inline unsigned int cpu_core(struct cpuinfo_mips *cpuinfo)
{
return (cpuinfo->globalnumber & MIPS_GLOBALNUMBER_CORE) >>
......@@ -155,6 +165,7 @@ static inline unsigned int cpu_vpe_id(struct cpuinfo_mips *cpuinfo)
MIPS_GLOBALNUMBER_VP_SHF;
}
extern void cpu_set_cluster(struct cpuinfo_mips *cpuinfo, unsigned int cluster);
extern void cpu_set_core(struct cpuinfo_mips *cpuinfo, unsigned int core);
extern void cpu_set_vpe_id(struct cpuinfo_mips *cpuinfo, unsigned int vpe);
......
......@@ -2099,6 +2099,16 @@ void cpu_report(void)
pr_info("MSA revision is: %08x\n", c->msa_id);
}
void cpu_set_cluster(struct cpuinfo_mips *cpuinfo, unsigned int cluster)
{
/* Ensure the core number fits in the field */
WARN_ON(cluster > (MIPS_GLOBALNUMBER_CLUSTER >>
MIPS_GLOBALNUMBER_CLUSTER_SHF));
cpuinfo->globalnumber &= ~MIPS_GLOBALNUMBER_CLUSTER;
cpuinfo->globalnumber |= cluster << MIPS_GLOBALNUMBER_CLUSTER_SHF;
}
void cpu_set_core(struct cpuinfo_mips *cpuinfo, unsigned int core)
{
/* Ensure the core number fits in the field */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment