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lib: sbi: Refactor the calls to sbi_hart_switch_mode()

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Move them into sbi_hsm_hart_start_finish() and sbi_hsm_hart_resume_finish()
to make them easier to manage.

This will be used by subsequent patches.

Suggested-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Evgenii Shatokhin <e.shatokhin@yadro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Evgenii Shatokhin 2023-03-06 00:22:45 +03:00 • committed by Anup Patel
parent c631a7da27
commit d56049e299
3 changed files with 23 additions and 16 deletions
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6
include/sbi/sbi_hsm.h
View file

@ -66,7 +66,8 @@ int sbi_hsm_hart_start(struct sbi_scratch *scratch,
u32 hartid, ulong saddr, ulong smode, ulong arg1);
int sbi_hsm_hart_stop(struct sbi_scratch *scratch, bool exitnow);
void sbi_hsm_hart_resume_start(struct sbi_scratch *scratch);
void sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch);
void __noreturn sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch,
u32 hartid);
int sbi_hsm_hart_suspend(struct sbi_scratch *scratch, u32 suspend_type,
ulong raddr, ulong rmode, ulong arg1);
bool sbi_hsm_hart_change_state(struct sbi_scratch *scratch, long oldstate,
@ -76,6 +77,7 @@ int sbi_hsm_hart_get_state(const struct sbi_domain *dom, u32 hartid);
int sbi_hsm_hart_interruptible_mask(const struct sbi_domain *dom,
ulong hbase, ulong *out_hmask);
void __sbi_hsm_suspend_non_ret_save(struct sbi_scratch *scratch);
void sbi_hsm_prepare_next_jump(struct sbi_scratch *scratch, u32 hartid);
void __noreturn sbi_hsm_hart_start_finish(struct sbi_scratch *scratch,
u32 hartid);
#endif

13
lib/sbi/sbi_hsm.c
View file

@ -110,7 +110,8 @@ int sbi_hsm_hart_interruptible_mask(const struct sbi_domain *dom,
return 0;
}
void sbi_hsm_prepare_next_jump(struct sbi_scratch *scratch, u32 hartid)
void __noreturn sbi_hsm_hart_start_finish(struct sbi_scratch *scratch,
u32 hartid)
{
struct sbi_hsm_data *hdata = sbi_scratch_offset_ptr(scratch,
hart_data_offset);
@ -118,6 +119,9 @@ void sbi_hsm_prepare_next_jump(struct sbi_scratch *scratch, u32 hartid)
if (!__sbi_hsm_hart_change_state(hdata, SBI_HSM_STATE_START_PENDING,
SBI_HSM_STATE_STARTED))
sbi_hart_hang();
sbi_hart_switch_mode(hartid, scratch->next_arg1, scratch->next_addr,
scratch->next_mode, false);
}
static void sbi_hsm_hart_wait(struct sbi_scratch *scratch, u32 hartid)
@ -381,7 +385,8 @@ void sbi_hsm_hart_resume_start(struct sbi_scratch *scratch)
hsm_device_hart_resume();
}
void sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch)
void __noreturn sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch,
u32 hartid)
{
struct sbi_hsm_data *hdata = sbi_scratch_offset_ptr(scratch,
hart_data_offset);
@ -396,6 +401,10 @@ void sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch)
* the warm-boot sequence.
*/
__sbi_hsm_suspend_non_ret_restore(scratch);
sbi_hart_switch_mode(hartid, scratch->next_arg1,
scratch->next_addr,
scratch->next_mode, false);
}
int sbi_hsm_hart_suspend(struct sbi_scratch *scratch, u32 suspend_type,

20
lib/sbi/sbi_init.c
View file

@ -355,12 +355,11 @@ static void __noreturn init_coldboot(struct sbi_scratch *scratch, u32 hartid)
init_count = sbi_scratch_offset_ptr(scratch, init_count_offset);
(*init_count)++;
sbi_hsm_prepare_next_jump(scratch, hartid);
sbi_hart_switch_mode(hartid, scratch->next_arg1, scratch->next_addr,
scratch->next_mode, false);
sbi_hsm_hart_start_finish(scratch, hartid);
}
static void init_warm_startup(struct sbi_scratch *scratch, u32 hartid)
static void __noreturn init_warm_startup(struct sbi_scratch *scratch,
u32 hartid)
{
int rc;
unsigned long *init_count;
@ -412,10 +411,11 @@ static void init_warm_startup(struct sbi_scratch *scratch, u32 hartid)
init_count = sbi_scratch_offset_ptr(scratch, init_count_offset);
(*init_count)++;
sbi_hsm_prepare_next_jump(scratch, hartid);
sbi_hsm_hart_start_finish(scratch, hartid);
}
static void init_warm_resume(struct sbi_scratch *scratch)
static void __noreturn init_warm_resume(struct sbi_scratch *scratch,
u32 hartid)
{
int rc;
@ -429,7 +429,7 @@ static void init_warm_resume(struct sbi_scratch *scratch)
if (rc)
sbi_hart_hang();
sbi_hsm_hart_resume_finish(scratch);
sbi_hsm_hart_resume_finish(scratch, hartid);
}
static void __noreturn init_warmboot(struct sbi_scratch *scratch, u32 hartid)
@ -443,13 +443,9 @@ static void __noreturn init_warmboot(struct sbi_scratch *scratch, u32 hartid)
sbi_hart_hang();
if (hstate == SBI_HSM_STATE_SUSPENDED)
init_warm_resume(scratch);
init_warm_resume(scratch, hartid);
else
init_warm_startup(scratch, hartid);
sbi_hart_switch_mode(hartid, scratch->next_arg1,
scratch->next_addr,
scratch->next_mode, false);
}
static atomic_t coldboot_lottery = ATOMIC_INITIALIZER(0);