[PATCH v3 1/3] lib: sbi: Refactor the calls to sbi_hart_switch_mode()

[Evgenii Shatokhin]

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 at brainfault.org>
Signed-off-by: Evgenii Shatokhin <e.shatokhin at yadro.com>
---
 include/sbi/sbi_hsm.h |  6 ++++--
 lib/sbi/sbi_hsm.c     | 13 +++++++++++--
 lib/sbi/sbi_init.c    | 20 ++++++++------------
 3 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/include/sbi/sbi_hsm.h b/include/sbi/sbi_hsm.h
index c0b4830..4b5601b 100644
--- a/include/sbi/sbi_hsm.h
+++ b/include/sbi/sbi_hsm.h
@@ -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
diff --git a/lib/sbi/sbi_hsm.c b/lib/sbi/sbi_hsm.c
index 3eeeb58..100b8c0 100644
--- a/lib/sbi/sbi_hsm.c
+++ b/lib/sbi/sbi_hsm.c
@@ -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,
diff --git a/lib/sbi/sbi_init.c b/lib/sbi/sbi_init.c
index bc60a42..dcca2c8 100644
--- a/lib/sbi/sbi_init.c
+++ b/lib/sbi/sbi_init.c
@@ -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);
-- 
2.34.1