feat: smp_call: added signaling call_req

This patch introduces `rt_smp_call_request` API to handle queued
requests across cores with user provided data buffer, which provides a
way to request IPI through a non-blocking pattern.

It also resolved several issues in the old implementation:
- Multiple requests from different cores can not be queued in the work
  object of the target core.
- Data racing on `rt_smp_work` of same core. If multiple requests came
  in turns, or if the call is used by the target cpu, while a new
  request is coming, the value will be overwrite.
- Memory vulnerability. The rt_smp_event is allocated on stack, though
  the caller may not wait until the call is done.
- API naming problem. Actually we don't provide a way to issue an IPI to
  ANY core in mask. What the API do is aligned to MANY pattern.
- FUNC_IPI registering to PIC.

Changes:
- Declared and configured the new `RT_SMP_CALL_IPI` to support
  functional IPIs for task requests across cores.
- Replaced the single `rt_smp_work` array with `call_req_cores` to
  manage per-core call requests safely.
- Added `_call_req_take` and `_call_req_release` functions for atomic
  handling of request lifetimes, preventing data race conditions.
- Replaced single event handling with a queue-based approach
  (`call_queue`) for efficient multi-request processing per core.
- Introduced `rt_smp_call_ipi_handler` to process queued requests,
  reducing IPI contention by only sending new requests when needed.
- Implemented `_smp_call_remote_request` to handle remote requests
  with specific flags, enabling more flexible core-to-core task
  signaling.
- Refined `rt_smp_call_req_init` to initialize and track requests
  with atomic usage flags, mitigating potential memory vulnerabilities.

Signed-off-by: Shell <[email protected]>

2 files changed, 4 insertions, 2 deletions

diff --git a/components/drivers/pic/pic-gic-common.c b/components/drivers/pic/pic-gic-common.c
index 07e5f0b18d..5c6dc030cf 100644
--- a/components/drivers/pic/pic-gic-common.c
+++ b/components/drivers/pic/pic-gic-common.c
@@ -71,8 +71,9 @@ void gic_common_sgi_config(void *base, void *data, int irq_base)
         pirq = rt_pic_find_ipi(data, ipi);      \
         pirq->mode = RT_IRQ_MODE_EDGE_RISING;   \
 
-        DECLARE_GIC_IPI(RT_SCHEDULE_IPI, 0);
-        DECLARE_GIC_IPI(RT_STOP_IPI, 1);
+        DECLARE_GIC_IPI(RT_SCHEDULE_IPI, RT_SCHEDULE_IPI);
+        DECLARE_GIC_IPI(RT_STOP_IPI, RT_STOP_IPI);
+        DECLARE_GIC_IPI(RT_SMP_CALL_IPI, RT_SMP_CALL_IPI);
 
 #undef DECLARE_GIC_IPI
     }
diff --git a/components/drivers/pic/pic.c b/components/drivers/pic/pic.c
index 9f8f6f3cf7..eebe3fd6fe 100644
--- a/components/drivers/pic/pic.c
+++ b/components/drivers/pic/pic.c
@@ -31,6 +31,7 @@ static int _ipi_hash[] =
 #ifdef RT_USING_SMP
     [RT_SCHEDULE_IPI] = RT_SCHEDULE_IPI,
     [RT_STOP_IPI] = RT_STOP_IPI,
+    [RT_SMP_CALL_IPI] = RT_SMP_CALL_IPI,
 #endif
 };