Messages in this thread | | | Date | Wed, 8 May 2024 08:39:32 +0800 | Subject | Re: [PATCH v2] LoongArch: Update the flush cache policy | From | lijun <> |
| |
Superseded.
在 2024/5/7 15:43, Li Jun 写道: > fix when LoongArch s3 resume, Can't find image information > > Signed-off-by: Li Jun <lijun01@kylinos.cn> > Signed-off-by: Baoqi Zhang <zhangbaoqi@loongson.cn> > Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn> > Signed-off-by: Biao Dong <dongbiao@loongson.cn> > --- > arch/loongarch/mm/cache.c | 23 ++++++++++++++++++++++- > 1 file changed, 22 insertions(+), 1 deletion(-) > > diff --git a/arch/loongarch/mm/cache.c b/arch/loongarch/mm/cache.c > index 6be04d36ca07..89eeb9a97dd5 100644 > --- a/arch/loongarch/mm/cache.c > +++ b/arch/loongarch/mm/cache.c > @@ -63,6 +63,27 @@ static void flush_cache_leaf(unsigned int leaf) > } while (--nr_nodes > 0); > } > > +static void flush_cache_last_level(unsigned int leaf) > +{ > + u64 addr; > + int i, j, nr_nodes; > + struct cache_desc *cdesc = current_cpu_data.cache_leaves + leaf; > + > + nr_nodes = loongson_sysconf.nr_nodes; > + > + addr = CSR_DMW1_BASE; > + iocsr_write32(0x1, 0x280); > + do { > + for (i = 0; i < (cdesc->ways * 3); i++) { > + for (j = 0; j < (cdesc->sets); j++) { > + *(volatile u32 *)addr; > + addr += cdesc->linesz; > + } > + } > + addr += 0x100000000000; > + } while (--nr_nodes > 0); > +} > + > asmlinkage __visible void __flush_cache_all(void) > { > int leaf; > @@ -71,7 +92,7 @@ asmlinkage __visible void __flush_cache_all(void) > > leaf = cache_present - 1; > if (cache_inclusive(cdesc + leaf)) { > - flush_cache_leaf(leaf); > + flush_cache_last_level(leaf); > return; > } >
| |