[PATCH 03/12] soc: sifive: ccache: Add StarFive JH7100 support

Cristian Ciocaltea
2023-02-11T03:19:04Z

From: Emil Renner Berthing <kernel@esmil.dk>

This adds support for the StarFive JH7100 SoC which also feature this
SiFive cache controller.

Unfortunately the interrupt for uncorrected data is broken on the JH7100
and fires continuously, so add a quirk to not register a handler for it.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
[drop JH7110, rework Kconfig]
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
drivers/soc/sifive/Kconfig | 1 +
drivers/soc/sifive/sifive_ccache.c | 11 ++++++++++-
2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/sifive/Kconfig b/drivers/soc/sifive/Kconfig
index e86870be34c9..867cf16273a4 100644
--- a/drivers/soc/sifive/Kconfig
+++ b/drivers/soc/sifive/Kconfig
@@ -4,6 +4,7 @@ if SOC_SIFIVE || SOC_STARFIVE

config SIFIVE_CCACHE
bool "Sifive Composable Cache controller"
+ default SOC_STARFIVE
help
Support for the composable cache controller on SiFive platforms.

diff --git a/drivers/soc/sifive/sifive_ccache.c b/drivers/soc/sifive/sifive_ccache.c
index 3684f5b40a80..676468c35859 100644
--- a/drivers/soc/sifive/sifive_ccache.c
+++ b/drivers/soc/sifive/sifive_ccache.c
@@ -106,6 +106,7 @@ static void ccache_config_read(void)
static const struct of_device_id sifive_ccache_ids[] = {
{ .compatible = "sifive,fu540-c000-ccache" },
{ .compatible = "sifive,fu740-c000-ccache" },
+ { .compatible = "starfive,jh7100-ccache", .data = (void *)BIT(DATA_UNCORR) },
{ .compatible = "sifive,ccache0" },
{ /* end of table */ }
};
@@ -210,11 +211,15 @@ static int __init sifive_ccache_init(void)
struct device_node *np;
struct resource res;
int i, rc, intr_num;
+ const struct of_device_id *match;
+ unsigned long broken_irqs;

- np = of_find_matching_node(NULL, sifive_ccache_ids);
+ np = of_find_matching_node_and_match(NULL, sifive_ccache_ids, &match);
if (!np)
return -ENODEV;

+ broken_irqs = (uintptr_t)match->data;
+
if (of_address_to_resource(np, 0, &res)) {
rc = -ENODEV;
goto err_node_put;
@@ -240,6 +245,10 @@ static int __init sifive_ccache_init(void)

for (i = 0; i < intr_num; i++) {
g_irq[i] = irq_of_parse_and_map(np, i);
+
+ if (broken_irqs & BIT(i))
+ continue;
+
rc = request_irq(g_irq[i], ccache_int_handler, 0, "ccache_ecc",
NULL);
if (rc) {
--
2.39.1