Add direct write for new start bit register

Author: ericxu233

src/acl_kernel_if.cpp

@@ -45,7 +45,8 @@ acl_process_autorun_profiler_scan_chain(unsigned int physical_device_id,
 // address map.
 #define CSR_VERSION_ID_18_1 (3)
 #define CSR_VERSION_ID_19_1 (4)
-#define CSR_VERSION_ID CSR_VERSION_ID_19_1
+#define CSR_VERSION_ID_23_1 (5)
+#define CSR_VERSION_ID CSR_VERSION_ID_23_1
 
 // Address map
 // For unit tests to work, these defines must match those in the unit test
@@ -67,19 +68,21 @@ acl_process_autorun_profiler_scan_chain(unsigned int physical_device_id,
 
 // Byte offsets into the CRA:
 #define KERNEL_OFFSET_CSR 0
-#define KERNEL_OFFSET_PRINTF_BUFFER_SIZE 0x4
-#define KERNEL_OFFSET_CSR_PROFILE_CTRL 0xC
-#define KERNEL_OFFSET_CSR_PROFILE_DATA 0x10
-#define KERNEL_OFFSET_CSR_PROFILE_START_CYCLE 0x18
-#define KERNEL_OFFSET_CSR_PROFILE_STOP_CYCLE 0x20
-#define KERNEL_OFFSET_FINISH_COUNTER 0x28
-#define KERNEL_OFFSET_INVOCATION_IMAGE 0x30
+#define KERNEL_OFFSET_BUSY_NULL 0x4                // 4
+#define KERNEL_OFFSET_START_REG 0x8                // 8
+#define KERNEL_OFFSET_PRINTF_BUFFER_SIZE 0xC       // 12
+#define KERNEL_OFFSET_CSR_PROFILE_CTRL 0x14        // 20
+#define KERNEL_OFFSET_CSR_PROFILE_DATA 0x18        // 24
+#define KERNEL_OFFSET_CSR_PROFILE_START_CYCLE 0x20 // 32
+#define KERNEL_OFFSET_CSR_PROFILE_STOP_CYCLE 0x28  // 40
+#define KERNEL_OFFSET_FINISH_COUNTER 0x30          // 48
+#define KERNEL_OFFSET_INVOCATION_IMAGE 0x38        // 56
 
 // Backwards compatibility with CSR_VERSION_ID 3
 #define KERNEL_OFFSET_INVOCATION_IMAGE_181 0x28
 
 // Bit positions
-#define KERNEL_CSR_GO 0
+#define KERNEL_CSR_START 0
 #define KERNEL_CSR_DONE 1
 #define KERNEL_CSR_STALLED 3
 #define KERNEL_CSR_UNSTALL 4
@@ -1279,11 +1282,15 @@ void acl_kernel_if_launch_kernel_on_custom_sof(
     return;
   }
 
-  unsigned int new_csr = 0;
-  acl_kernel_cra_read(kern, accel_id, KERNEL_OFFSET_CSR, &new_csr);
-  ACL_KERNEL_SET_BIT(new_csr, KERNEL_CSR_GO);
-  acl_kernel_cra_write(kern, accel_id, KERNEL_OFFSET_CSR, new_csr);
-
+  // backwards compatibility for version prior to 2023.1
+  if (kern->csr_version < CSR_VERSION_ID) {
+    unsigned int new_csr = 0;
+    acl_kernel_cra_read(kern, accel_id, KERNEL_OFFSET_CSR, &new_csr);
+    ACL_KERNEL_SET_BIT(new_csr, KERNEL_CSR_START);
+    acl_kernel_cra_write(kern, accel_id, KERNEL_OFFSET_CSR, new_csr);
+  } else {
+    acl_kernel_cra_write(kern, accel_id, KERNEL_OFFSET_START_REG, 1);
+  }
   // IRQ handler takes care of the completion event through
   // acl_kernel_if_update_status()
 }