[PATCH v4 3/6] soc: sifive: ccache: determine the cache level from dts

From: Zong Li
Date: Mon Sep 12 2022 - 02:51:14 EST


Composable cache could be L2 or L3 cache, use 'cache-level' property of
device node to determine the level.

Signed-off-by: Zong Li <zong.li@xxxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
drivers/soc/sifive/sifive_ccache.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/sifive/sifive_ccache.c b/drivers/soc/sifive/sifive_ccache.c
index 949b824e89ad..b361b661ea09 100644
--- a/drivers/soc/sifive/sifive_ccache.c
+++ b/drivers/soc/sifive/sifive_ccache.c
@@ -38,6 +38,7 @@
static void __iomem *ccache_base;
static int g_irq[SIFIVE_CCACHE_MAX_ECCINTR];
static struct riscv_cacheinfo_ops ccache_cache_ops;
+static int level;

enum {
DIR_CORR = 0,
@@ -144,7 +145,7 @@ static const struct attribute_group *ccache_get_priv_group(struct cacheinfo
*this_leaf)
{
/* We want to use private group for composable cache only */
- if (this_leaf->level == 2)
+ if (this_leaf->level == level)
return &priv_attr_group;
else
return NULL;
@@ -215,6 +216,9 @@ static int __init sifive_ccache_init(void)
if (!ccache_base)
return -ENOMEM;

+ if (of_property_read_u32(np, "cache-level", &level))
+ return -ENOENT;
+
intr_num = of_property_count_u32_elems(np, "interrupts");
if (!intr_num) {
pr_err("CCACHE: no interrupts property\n");
--
2.17.1