[PATCH] platform: generic: add overrides for vendor extensions

[Mayuresh Chitale]

Allow the vendor_ext_check and vendor_ext_provider APIs of the
generic platform to be overridden by other platforms

Signed-off-by: Mayuresh Chitale <mchitale at ventanamicro.com>
---
 platform/generic/include/platform_override.h |  7 ++++++
 platform/generic/platform.c                  | 25 ++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/platform/generic/include/platform_override.h b/platform/generic/include/platform_override.h
index 4af8754..e55da25 100644
--- a/platform/generic/include/platform_override.h
+++ b/platform/generic/include/platform_override.h
@@ -11,6 +11,7 @@
 #define __PLATFORM_OVERRIDE_H__
 
 #include <sbi/sbi_types.h>
+#include <sbi/sbi_trap.h>
 
 struct platform_override {
 	const struct fdt_match *match_table;
@@ -21,6 +22,12 @@ struct platform_override {
 	void (*early_exit)(const struct fdt_match *match);
 	void (*final_exit)(const struct fdt_match *match);
 	int (*fdt_fixup)(void *fdt, const struct fdt_match *match);
+	int (*vendor_ext_check)(long extid, const struct fdt_match *match);
+	int (*vendor_ext_provider)(long extid, long funcid,
+				   const struct sbi_trap_regs *regs,
+				   unsigned long *out_value,
+				   struct sbi_trap_info *out_trap,
+				   const struct fdt_match *match);
 };
 
 #endif
diff --git a/platform/generic/platform.c b/platform/generic/platform.c
index 7651273..bf93af6 100644
--- a/platform/generic/platform.c
+++ b/platform/generic/platform.c
@@ -168,6 +168,29 @@ static int generic_final_init(bool cold_boot)
 	return 0;
 }
 
+static int generic_vendor_ext_check(long extid)
+{
+	if (generic_plat && generic_plat->vendor_ext_check)
+		return generic_plat->vendor_ext_check(extid,
+						      generic_plat_match);
+
+	return 0;
+}
+
+static int generic_vendor_ext_provider(long extid, long funcid,
+				       const struct sbi_trap_regs *regs,
+				       unsigned long *out_value,
+				       struct sbi_trap_info *out_trap)
+{
+	if (generic_plat && generic_plat->vendor_ext_provider) {
+		return generic_plat->vendor_ext_provider(extid, funcid, regs,
+							 out_value, out_trap,
+							 generic_plat_match);
+	}
+
+	return SBI_ENOTSUPP;
+}
+
 static void generic_early_exit(void)
 {
 	if (generic_plat && generic_plat->early_exit)
@@ -236,6 +259,8 @@ const struct sbi_platform_operations platform_ops = {
 	.get_tlbr_flush_limit	= generic_tlbr_flush_limit,
 	.timer_init		= fdt_timer_init,
 	.timer_exit		= fdt_timer_exit,
+	.vendor_ext_check	= generic_vendor_ext_check,
+	.vendor_ext_provider	= generic_vendor_ext_provider,
 };
 
 struct sbi_platform platform = {
-- 
2.25.1