armv8: Add framework for CCN-504 interconnect configuration

This patch adds a minimal framework for Dickens CCN-504
interconnect configuration - mainly related to adding Clusters/cores
to snoop/DVM domain and setting QoS of the RN-I ports.

LS2085A platform makes use of these configurations to support
better network data performance and to boot a SMP Linux.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S

@@ -16,13 +16,71 @@ ENTRY(lowlevel_init)
 	mov	x29, lr			/* Save LR */
 
 	/* Add fully-coherent masters to DVM domain */
-	ldr	x1, =CCI_MN_BASE
-	ldr	x2, [x1, #CCI_MN_RNF_NODEID_LIST]
-	str	x2, [x1, #CCI_MN_DVM_DOMAIN_CTL_SET]
-1:	ldr	x3, [x1, #CCI_MN_DVM_DOMAIN_CTL_SET]
-	mvn	x0, x3
-	tst	x0, x3		/* Wait for domain addition to complete */
-	b.ne	1b
+	ldr	x0, =CCI_MN_BASE
+	ldr	x1, =CCI_MN_RNF_NODEID_LIST
+	ldr	x2, =CCI_MN_DVM_DOMAIN_CTL_SET
+	bl	ccn504_add_masters_to_dvm
+
+	/* Set all RN-I ports to QoS of 15 */
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(0)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(0)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(0)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(2)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(2)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(2)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(6)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(6)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(6)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(12)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(12)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(12)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(16)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(16)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(16)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+
+	ldr	x0, =CCI_S0_QOS_CONTROL_BASE(20)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S1_QOS_CONTROL_BASE(20)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
+	ldr	x0, =CCI_S2_QOS_CONTROL_BASE(20)
+	ldr	x1, =0x00FF000C
+	bl	ccn504_set_qos
 
 	/* Set the SMMU page size in the sACR register */
 	ldr	x1, =SMMU_BASE

arch/arm/include/asm/arch-fsl-lsch3/config.h

@@ -136,6 +136,17 @@
 #define CCI_MN_DVM_DOMAIN_CTL		0x200
 #define CCI_MN_DVM_DOMAIN_CTL_SET	0x210
 
+#define CCI_RN_I_0_BASE			(CCI_MN_BASE + 0x800000)
+#define CCI_RN_I_2_BASE			(CCI_MN_BASE + 0x820000)
+#define CCI_RN_I_6_BASE			(CCI_MN_BASE + 0x860000)
+#define CCI_RN_I_12_BASE		(CCI_MN_BASE + 0x8C0000)
+#define CCI_RN_I_16_BASE		(CCI_MN_BASE + 0x900000)
+#define CCI_RN_I_20_BASE		(CCI_MN_BASE + 0x940000)
+
+#define CCI_S0_QOS_CONTROL_BASE(x) ((CCI_RN_I_0_BASE + (x * 0x10000)) + 0x10)
+#define CCI_S1_QOS_CONTROL_BASE(x) ((CCI_RN_I_0_BASE + (x * 0x10000)) + 0x110)
+#define CCI_S2_QOS_CONTROL_BASE(x) ((CCI_RN_I_0_BASE + (x * 0x10000)) + 0x210)
+
 /* Device Configuration */
 #define DCFG_BASE		0x01e00000
 #define DCFG_PORSR1			0x000

arch/arm/lib/Makefile

@@ -42,6 +42,7 @@ obj-y	+= stack.o
 ifdef CONFIG_CPU_V7M
 obj-y	+= interrupts_m.o
 else ifdef CONFIG_ARM64
+obj-y	+= ccn504.o
 obj-y	+= gic_64.o
 obj-y	+= interrupts_64.o
 else

arch/arm/lib/ccn504.S

@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2015 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Extracted from gic_64.S
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/macro.h>
+
+/*************************************************************************
+ *
+ * void ccn504_add_masters_to_dvm(CCI_MN_BASE, CCI_MN_RNF_NODEID_LIST,
+ * 				  CCI_MN_DVM_DOMAIN_CTL_SET);
+ *
+ * Add fully-coherent masters to DVM domain
+ *
+ *************************************************************************/
+ENTRY(ccn504_add_masters_to_dvm)
+	/*
+	 * x0: CCI_MN_BASE
+	 * x1: CCI_MN_RNF_NODEID_LIST
+	 * x2: CCI_MN_DVM_DOMAIN_CTL_SET
+	 */
+
+	/* Add fully-coherent masters to DVM domain */
+	ldr	x9, [x0, x1]
+	str	x9, [x0, x2]
+1:	ldr	x10, [x0, x2]
+	mvn	x11, x10
+	tst	x11, x10 /* Wait for domain addition to complete */
+	b.ne	1b
+
+	ret
+ENDPROC(ccn504_add_masters_to_dvm)
+
+/*************************************************************************
+ *
+ * void ccn504_set_qos(CCI_Sx_QOS_CONTROL_BASE, QoS Value);
+ *
+ * Initialize QoS settings for AR/AW override.
+ * Right now, this function sets the same QoS value for all RN-I ports
+ *
+ *************************************************************************/
+ENTRY(ccn504_set_qos)
+	/*
+	 * x0: CCI_Sx_QOS_CONTROL_BASE
+	 * x1: QoS Value
+	 */
+
+	/* Set all RN-I ports to QoS value denoted by x1 */
+	ldr	x9, [x0]
+	mov	x10, x1
+	orr	x9, x9, x10
+	str	x9, [x0]
+
+	ret
+ENDPROC(ccn504_set_qos)
+