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lib: Add irqchip exit API

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We add an optional platform irqchip exit hook for exit path handling
in sbi_exit() implementation.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel 2020-01-03 09:51:58 +05:30
parent b325f6baef
commit 1993182f03
2 changed files with 15 additions and 0 deletions
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13
include/sbi/sbi_platform.h
View file

@ -109,6 +109,8 @@ struct sbi_platform_operations {
/** Initialize the platform interrupt controller for current HART */ /** Initialize the platform interrupt controller for current HART */
int (*irqchip_init)(bool cold_boot); int (*irqchip_init)(bool cold_boot);
/** Exit the platform interrupt controller for current HART */
void (*irqchip_exit)(void);
/** Send IPI to a target HART */ /** Send IPI to a target HART */
void (*ipi_send)(u32 target_hart); void (*ipi_send)(u32 target_hart);
@ -459,6 +461,17 @@ static inline int sbi_platform_irqchip_init(const struct sbi_platform *plat,
return 0; return 0;
} }
/**
* Exit the platform interrupt controller for current HART
*
* @param plat pointer to struct sbi_platform
*/
static inline void sbi_platform_irqchip_exit(const struct sbi_platform *plat)
{
if (plat && sbi_platform_ops(plat)->irqchip_exit)
sbi_platform_ops(plat)->irqchip_exit();
}
/** /**
* Send IPI to a target HART * Send IPI to a target HART
* *

2
lib/sbi/sbi_init.c
View file

@ -209,6 +209,8 @@ void __noreturn sbi_exit(struct sbi_scratch *scratch)
sbi_ipi_exit(scratch); sbi_ipi_exit(scratch);
sbi_platform_irqchip_exit(plat);
sbi_platform_final_exit(plat); sbi_platform_final_exit(plat);
sbi_hart_hang(); sbi_hart_hang();