diff mbox series

[v3,4/6] soc: sifive: ccache: reduce printing on init

Message ID 20220908144424.4232-5-zong.li@sifive.com (mailing list archive)
State Superseded
Headers show
Series Use composable cache instead of L2 cache | expand

Commit Message

Zong Li Sept. 8, 2022, 2:44 p.m. UTC
From: Ben Dooks <ben.dooks@sifive.com>

The driver prints out 6 lines on startup, which can easily be redcued
to two lines without losing any information.

Note, to make the types work better, uint64_t has been replaced with
ULL to make the unsigned long long match the format in the print
statement.

Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
---
 drivers/soc/sifive/sifive_ccache.c | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

Comments

Conor Dooley Sept. 8, 2022, 6:29 p.m. UTC | #1
On 08/09/2022 15:44, Zong Li wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> From: Ben Dooks <ben.dooks@sifive.com>
> 
> The driver prints out 6 lines on startup, which can easily be redcued
> to two lines without losing any information.
> 
> Note, to make the types work better, uint64_t has been replaced with
> ULL to make the unsigned long long match the format in the print
> statement.
> 
> Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
> Signed-off-by: Zong Li <zong.li@sifive.com>
> ---
>  drivers/soc/sifive/sifive_ccache.c | 25 +++++++++++--------------
>  1 file changed, 11 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/soc/sifive/sifive_ccache.c b/drivers/soc/sifive/sifive_ccache.c
> index 690c19489317..58d14f11a63a 100644
> --- a/drivers/soc/sifive/sifive_ccache.c
> +++ b/drivers/soc/sifive/sifive_ccache.c
> @@ -81,20 +81,17 @@ static void setup_sifive_debug(void)
> 
>  static void ccache_config_read(void)
>  {
> -       u32 regval, val;
> -
> -       regval = readl(ccache_base + SIFIVE_CCACHE_CONFIG);
> -       val = regval & 0xFF;
> -       pr_info("CCACHE: No. of Banks in the cache: %d\n", val);
> -       val = (regval & 0xFF00) >> 8;
> -       pr_info("CCACHE: No. of ways per bank: %d\n", val);
> -       val = (regval & 0xFF0000) >> 16;
> -       pr_info("CCACHE: Sets per bank: %llu\n", (uint64_t)1 << val);
> -       val = (regval & 0xFF000000) >> 24;
> -       pr_info("CCACHE: Bytes per cache block: %llu\n", (uint64_t)1 << val);
> -
> -       regval = readl(ccache_base + SIFIVE_CCACHE_WAYENABLE);
> -       pr_info("CCACHE: Index of the largest way enabled: %d\n", regval);
> +       u32 cfg;
> +
> +       cfg = readl(ccache_base + SIFIVE_CCACHE_CONFIG);
> +
> +       pr_info("CCACHE: %u banks, %u ways, sets/bank=%llu, bytes/block=%llu\n",
> +               (cfg & 0xff), (cfg >> 8) & 0xff,
> +               BIT_ULL((cfg >> 16) & 0xff),
> +               BIT_ULL((cfg >> 24) & 0xff));

From v2:
Could we use defines please for the register shifts please?

Other than that:
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

> +
> +       cfg = readl(ccache_base + SIFIVE_CCACHE_WAYENABLE);
> +       pr_info("CCACHE: Index of the largest way enabled: %u\n", cfg);
>  }
> 
>  static const struct of_device_id sifive_ccache_ids[] = {
> --
> 2.17.1
>
diff mbox series

Patch

diff --git a/drivers/soc/sifive/sifive_ccache.c b/drivers/soc/sifive/sifive_ccache.c
index 690c19489317..58d14f11a63a 100644
--- a/drivers/soc/sifive/sifive_ccache.c
+++ b/drivers/soc/sifive/sifive_ccache.c
@@ -81,20 +81,17 @@  static void setup_sifive_debug(void)
 
 static void ccache_config_read(void)
 {
-	u32 regval, val;
-
-	regval = readl(ccache_base + SIFIVE_CCACHE_CONFIG);
-	val = regval & 0xFF;
-	pr_info("CCACHE: No. of Banks in the cache: %d\n", val);
-	val = (regval & 0xFF00) >> 8;
-	pr_info("CCACHE: No. of ways per bank: %d\n", val);
-	val = (regval & 0xFF0000) >> 16;
-	pr_info("CCACHE: Sets per bank: %llu\n", (uint64_t)1 << val);
-	val = (regval & 0xFF000000) >> 24;
-	pr_info("CCACHE: Bytes per cache block: %llu\n", (uint64_t)1 << val);
-
-	regval = readl(ccache_base + SIFIVE_CCACHE_WAYENABLE);
-	pr_info("CCACHE: Index of the largest way enabled: %d\n", regval);
+	u32 cfg;
+
+	cfg = readl(ccache_base + SIFIVE_CCACHE_CONFIG);
+
+	pr_info("CCACHE: %u banks, %u ways, sets/bank=%llu, bytes/block=%llu\n",
+		(cfg & 0xff), (cfg >> 8) & 0xff,
+		BIT_ULL((cfg >> 16) & 0xff),
+		BIT_ULL((cfg >> 24) & 0xff));
+
+	cfg = readl(ccache_base + SIFIVE_CCACHE_WAYENABLE);
+	pr_info("CCACHE: Index of the largest way enabled: %u\n", cfg);
 }
 
 static const struct of_device_id sifive_ccache_ids[] = {