soc/intel/xeon_sp; Use soc specific stack-port function

Separate the get_stack_for_port into soc specific functions. This
removes a #if in common code.

Change-Id: Ib38a7d66947ded9b56193a9163e5128b2523e99c
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46971
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/intel/xeon_sp/cpx/include/soc/soc_util.h

@@ -26,5 +26,6 @@ int get_threads_per_package(void);
 const struct SystemMemoryMapHob *get_system_memory_map(void);
 
 void set_bios_init_completion(void);
+int soc_get_stack_for_port(int port);
 
 #endif /* _SOC_UTIL_H_ */

src/soc/intel/xeon_sp/cpx/soc_util.c

@@ -319,3 +319,25 @@ void set_bios_init_completion(void)
 	/* And finally, take care of the SBSP */
 	set_bios_init_completion_for_package(sbsp_socket_id);
 }
+/*
+ * EX: CPX-SP
+ * Ports    Stack   Stack(HOB)  IioConfigIou
+ * ==========================================
+ * 0        CSTACK      stack 0     IOU0
+ * 1A..1D   PSTACKZ     stack 1     IOU1
+ * 2A..2D   PSTACK1     stack 2     IOU2
+ * 3A..3D   PSTACK2     stack 4     IOU3
+ */
+int soc_get_stack_for_port(int port)
+{
+	if (port == PORT_0)
+		return CSTACK;
+	else if (port >= PORT_1A && port <= PORT_1D)
+		return PSTACK0;
+	else if (port >= PORT_2A && port <= PORT_2D)
+		return PSTACK1;
+	else if (port >= PORT_3A && port <= PORT_3D)
+		return PSTACK2;
+	else
+		return -1;
+}

src/soc/intel/xeon_sp/nb_acpi.c

@@ -142,48 +142,6 @@ static unsigned long acpi_fill_slit(unsigned long current)
 	return current;
 }
 
-/*
- * EX: CPX-SP
- * Ports    Stack   Stack(HOB)  IioConfigIou
- * ==========================================
- * 0        CSTACK      stack 0     IOU0
- * 1A..1D   PSTACKZ     stack 1     IOU1
- * 2A..2D   PSTACK1     stack 2     IOU2
- * 3A..3D   PSTACK2     stack 4     IOU3
- */
-static int get_stack_for_port(int port)
-{
-#if (CONFIG(SOC_INTEL_COOPERLAKE_SP))
-	if (port == PORT_0)
-		return CSTACK;
-	else if (port >= PORT_1A && port <= PORT_1D)
-		return PSTACK0;
-	else if (port >= PORT_2A && port <= PORT_2D)
-		return PSTACK1;
-	else if (port >= PORT_3A && port <= PORT_3D)
-		return PSTACK2;
-	else
-		return -1;
-#endif /* SOC_INTEL_COOPERLAKE_SP */
-
-#if (CONFIG(SOC_INTEL_SKYLAKE_SP))
-	if (port == PORT_0)
-		return CSTACK;
-	else if (port >= PORT_1A && port <= PORT_1D)
-		return PSTACK0;
-	else if (port >= PORT_2A && port <= PORT_2D)
-		return PSTACK1;
-	else if (port >= PORT_3A && port <= PORT_3D)
-		return PSTACK2;
-	else if (port >= PORT_4A && port <= PORT_4D)
-		return PSTACK3; // MCP0
-	else if (port >= PORT_5A && port <= PORT_5D)
-		return PSTACK4; // MCP1
-	else
-		return -1;
-#endif /* SOC_INTEL_SKYLAKE_SP */
-}
-
 /*
  * This function adds PCIe bridge device entry in DMAR table. If it is called
  * in the context of ATSR subtable, it adds ATSR subtable when it is first called.
@@ -193,7 +151,7 @@ static unsigned long acpi_create_dmar_ds_pci_br_for_port(unsigned long current,
 	bool is_atsr, bool *first)
 {
 
-	if (get_stack_for_port(port) != stack)
+	if (soc_get_stack_for_port(port) != stack)
 		return 0;
 
 	const uint32_t bus = iio_resource.StackRes[stack].BusBase;

src/soc/intel/xeon_sp/skx/include/soc/soc_util.h

@@ -27,5 +27,6 @@ const struct SystemMemoryMapHob *get_system_memory_map(void);
 
 void set_bios_init_completion(void);
 unsigned int soc_get_num_cpus(void);
+int soc_get_stack_for_port(int port);
 
 #endif /* _SOC_UTIL_H_ */

src/soc/intel/xeon_sp/skx/soc_util.c

@@ -394,4 +394,32 @@ void xeonsp_init_cpu_config(void)
 	}
 }
 
+/*
+ * EX: SKX-SP
+ * Ports    Stack   Stack(HOB)  IioConfigIou
+ * ==========================================
+ * 0        CSTACK      stack 0     IOU0
+ * 1A..1D   PSTACKZ     stack 1     IOU1
+ * 2A..2D   PSTACK1     stack 2     IOU2
+ * 3A..3D   PSTACK2     stack 3     IOU3
+ * 5A..4D   PSTACK3     stack 4     IOU4
+ * 5A..5D   PSTACK4     stack 5     IOU5
+ */
+int soc_get_stack_for_port(int port)
+{
+	if (port == PORT_0)
+		return CSTACK;
+	else if (port >= PORT_1A && port <= PORT_1D)
+		return PSTACK0;
+	else if (port >= PORT_2A && port <= PORT_2D)
+		return PSTACK1;
+	else if (port >= PORT_3A && port <= PORT_3D)
+		return PSTACK2;
+	else if (port >= PORT_4A && port <= PORT_4D)
+		return PSTACK3; // MCP0
+	else if (port >= PORT_5A && port <= PORT_5D)
+		return PSTACK4; // MCP1
+	else
+		return -1;
+}
 #endif