diff options
| author | Anup Patel <[email protected]> | 2020-01-03 09:39:10 +0530 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2020-01-07 12:11:02 +0530 |
| commit | b325f6baefeafcee169e5f8a529882fdc0f47dc5 (patch) | |
| tree | e721c583dd4451c3152152ca1be8b59761dc2c5a | |
| parent | 6469ed101cb3c036cce1ead0d64160a7315f72af (diff) | |
lib: Add ipi exit API
We add sbi_ipi_exit() API for exit path handling in sbi_exit()
implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
| -rw-r--r-- | include/sbi/sbi_ipi.h | 2 | ||||
| -rw-r--r-- | include/sbi/sbi_platform.h | 13 | ||||
| -rw-r--r-- | lib/sbi/sbi_init.c | 2 | ||||
| -rw-r--r-- | lib/sbi/sbi_ipi.c | 19 |
4 files changed, 35 insertions, 1 deletions
diff --git a/include/sbi/sbi_ipi.h b/include/sbi/sbi_ipi.h index 109e9af7..2dbc096e 100644 --- a/include/sbi/sbi_ipi.h +++ b/include/sbi/sbi_ipi.h @@ -36,4 +36,6 @@ void sbi_ipi_process(struct sbi_scratch *scratch); int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot); +void sbi_ipi_exit(struct sbi_scratch *scratch); + #endif diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h index 02007af5..21082fce 100644 --- a/include/sbi/sbi_platform.h +++ b/include/sbi/sbi_platform.h @@ -116,6 +116,8 @@ struct sbi_platform_operations { void (*ipi_clear)(u32 target_hart); /** Initialize IPI for current HART */ int (*ipi_init)(bool cold_boot); + /** Exit IPI for current HART */ + void (*ipi_exit)(void); /** Get platform timer value */ u64 (*timer_value)(void); @@ -500,6 +502,17 @@ static inline int sbi_platform_ipi_init(const struct sbi_platform *plat, } /** + * Exit the platform IPI support for current HART + * + * @param plat pointer to struct sbi_platform + */ +static inline void sbi_platform_ipi_exit(const struct sbi_platform *plat) +{ + if (plat && sbi_platform_ops(plat)->ipi_exit) + sbi_platform_ops(plat)->ipi_exit(); +} + +/** * Get platform timer value * * @param plat pointer to struct sbi_platform diff --git a/lib/sbi/sbi_init.c b/lib/sbi/sbi_init.c index 2247324c..c491bd86 100644 --- a/lib/sbi/sbi_init.c +++ b/lib/sbi/sbi_init.c @@ -207,6 +207,8 @@ void __noreturn sbi_exit(struct sbi_scratch *scratch) sbi_timer_exit(scratch); + sbi_ipi_exit(scratch); + sbi_platform_final_exit(plat); sbi_hart_hang(); diff --git a/lib/sbi/sbi_ipi.c b/lib/sbi/sbi_ipi.c index c2359274..f58349e7 100644 --- a/lib/sbi/sbi_ipi.c +++ b/lib/sbi/sbi_ipi.c @@ -160,8 +160,25 @@ int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot) if (ret) return ret; + /* Platform init */ + ret = sbi_platform_ipi_init(sbi_platform_ptr(scratch), cold_boot); + if (ret) + return ret; + /* Enable software interrupts */ csr_set(CSR_MIE, MIP_MSIP); - return sbi_platform_ipi_init(sbi_platform_ptr(scratch), cold_boot); + return 0; +} + +void sbi_ipi_exit(struct sbi_scratch *scratch) +{ + /* Disable software interrupts */ + csr_clear(CSR_MIE, MIP_MSIP); + + /* Process pending IPIs */ + sbi_ipi_process(scratch); + + /* Platform exit */ + sbi_platform_ipi_exit(sbi_platform_ptr(scratch)); } |