Merge pull request #269 from vikramkanigiri/vk/common-cci

Common driver for ARM cache coherent Interconnects

23 files changed, 383 insertions, 46 deletions

diff --git a/Makefile b/Makefile
index 78fed57a8..9d93a944b 100644
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,9 @@ CTX_INCLUDE_FPREGS		:= 0
 # Determine the version of ARM GIC architecture to use for interrupt management
 # in EL3. The platform port can change this value if needed.
 ARM_GIC_ARCH		:=	2
+# Determine the version of ARM CCI product used in the platform. The platform
+# port can change this value if needed.
+ARM_CCI_PRODUCT_ID	:=	400
 # Flag used to indicate if ASM_ASSERTION should be enabled for the build.
 # This defaults to being present in DEBUG builds only.
 ASM_ASSERTION		:=	${DEBUG}
@@ -237,6 +240,9 @@ $(eval $(call add_define,CTX_INCLUDE_FPREGS))
 # Process ARM_GIC_ARCH flag
 $(eval $(call add_define,ARM_GIC_ARCH))
 
+# Process ARM_CCI_PRODUCT_ID flag
+$(eval $(call add_define,ARM_CCI_PRODUCT_ID))
+
 # Process ASM_ASSERTION flag
 $(eval $(call assert_boolean,ASM_ASSERTION))
 $(eval $(call add_define,ASM_ASSERTION))
diff --git a/docs/user-guide.md b/docs/user-guide.md
index b1e123c2b..411a8702a 100644
--- a/docs/user-guide.md
+++ b/docs/user-guide.md
@@ -221,6 +221,10 @@ performed.
     driver for implementing the platform GIC API. This API is used
     by the interrupt management framework. Default is 2 (that is, version 2.0).
 
+*   `ARM_CCI_PRODUCT_ID`: Choice of ARM CCI product used by the platform. This
+    is used to determine the number of valid slave interfaces available in the
+    ARM CCI driver. Default is 400 (that is, CCI-400).
+
 *   `IMF_READ_INTERRUPT_ID`: Boolean flag used by the interrupt management
     framework to enable passing of the interrupt id to its handler. The id is
     read using a platform GIC API. `INTR_ID_UNAVAILABLE` is passed instead if
diff --git a/drivers/arm/cci/cci.c b/drivers/arm/cci/cci.c
new file mode 100644
index 000000000..44916d4b0
--- /dev/null
+++ b/drivers/arm/cci/cci.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <assert.h>
+#include <cci.h>
+#include <debug.h>
+#include <mmio.h>
+
+static unsigned long g_cci_base;
+static unsigned int g_max_master_id;
+static const int *g_cci_slave_if_map;
+
+#if DEBUG
+static int validate_cci_map(const int *map)
+{
+	unsigned int valid_cci_map = 0;
+	int slave_if_id;
+	int i;
+
+	/* Validate the map */
+	for (i = 0; i <= g_max_master_id; i++) {
+		slave_if_id = map[i];
+
+		if (slave_if_id < 0)
+			continue;
+
+		if (slave_if_id >= CCI_SLAVE_INTERFACE_COUNT) {
+			tf_printf("Slave interface ID is invalid\n");
+			return 0;
+		}
+
+		if (valid_cci_map & (1 << slave_if_id)) {
+			tf_printf("Multiple masters are assigned same"
+						" slave interface ID\n");
+			return 0;
+		}
+		valid_cci_map |= 1 << slave_if_id;
+	}
+
+	if (!valid_cci_map) {
+		tf_printf("No master is assigned a valid slave interface\n");
+		return 0;
+	}
+
+	return 1;
+}
+#endif /* DEBUG */
+
+void cci_init(unsigned long cci_base,
+		const int *map,
+		unsigned int num_cci_masters)
+{
+	assert(map);
+	assert(cci_base);
+
+	g_cci_base = cci_base;
+
+	/*
+	 * Master Id's are assigned from zero, So in an array of size n
+	 * the max master id is (n - 1).
+	 */
+	g_max_master_id = num_cci_masters - 1;
+
+	assert(validate_cci_map(map));
+	g_cci_slave_if_map = map;
+}
+
+void cci_enable_snoop_dvm_reqs(unsigned int master_id)
+{
+	int slave_if_id;
+
+	assert(g_cci_base);
+	assert(master_id <= g_max_master_id);
+
+	slave_if_id = g_cci_slave_if_map[master_id];
+	assert((slave_if_id < CCI_SLAVE_INTERFACE_COUNT) && (slave_if_id >= 0));
+
+	/*
+	 * Enable Snoops and DVM messages, no need for Read/Modify/Write as
+	 * rest of bits are write ignore
+	 */
+	mmio_write_32(g_cci_base +
+		      SLAVE_IFACE_OFFSET(slave_if_id) +
+		      SNOOP_CTRL_REG, DVM_EN_BIT | SNOOP_EN_BIT);
+
+	/* Wait for the dust to settle down */
+	while (mmio_read_32(g_cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
+		;
+}
+
+void cci_disable_snoop_dvm_reqs(unsigned int master_id)
+{
+	int slave_if_id;
+
+	assert(g_cci_base);
+	assert(master_id <= g_max_master_id);
+
+	slave_if_id = g_cci_slave_if_map[master_id];
+	assert((slave_if_id < CCI_SLAVE_INTERFACE_COUNT) && (slave_if_id >= 0));
+
+	/*
+	 * Disable Snoops and DVM messages, no need for Read/Modify/Write as
+	 * rest of bits are write ignore.
+	 */
+	mmio_write_32(g_cci_base +
+		      SLAVE_IFACE_OFFSET(slave_if_id) +
+		      SNOOP_CTRL_REG, ~(DVM_EN_BIT | SNOOP_EN_BIT));
+
+	/* Wait for the dust to settle down */
+	while (mmio_read_32(g_cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
+		;
+}
+
diff --git a/drivers/arm/cci400/cci400.c b/drivers/arm/cci400/cci400.c
index 6a8737a57..f832af826 100644
--- a/drivers/arm/cci400/cci400.c
+++ b/drivers/arm/cci400/cci400.c
@@ -31,6 +31,7 @@
 #include <arch.h>
 #include <assert.h>
 #include <cci400.h>
+#include <debug.h>
 #include <mmio.h>
 
 #define MAX_CLUSTERS		2
@@ -55,6 +56,9 @@ void cci_init(unsigned long cci_base,
 	assert((slave_iface3_cluster_ix >= 0) ||
 		(slave_iface3_cluster_ix >= 0));
 
+	WARN("Please migrate to common cci driver, This driver will be" \
+		" deprecated in future\n");
+
 	cci_base_addr = cci_base;
 	if (slave_iface3_cluster_ix >= 0)
 		cci_cluster_ix_to_iface[slave_iface3_cluster_ix] =
diff --git a/drivers/io/io_fip.c b/drivers/io/io_fip.c
index 0cec80448..9dcd901e5 100644
--- a/drivers/io/io_fip.c
+++ b/drivers/io/io_fip.c
@@ -143,7 +143,7 @@ static int file_to_uuid(const char *filename, uuid_t *uuid)
 	int i;
 	int status = -EINVAL;
 
-	for (i = 0; i < (sizeof(name_uuid) / sizeof(name_uuid[0])); i++) {
+	for (i = 0; i < ARRAY_SIZE(name_uuid); i++) {
 		if (strcmp(filename, name_uuid[i].name) == 0) {
 			copy_uuid(uuid, &name_uuid[i].uuid);
 			status = 0;
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 0959c893a..b36c9d35d 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -108,6 +108,8 @@
 #include <stdint.h>
 #include <stddef.h>
 
+#define ARRAY_SIZE(a)	(sizeof(a) / sizeof((a)[0]))
+
 /*******************************************************************************
  * Structure used for telling the next BL how much of a particular type of
  * memory is available for its use and how much is already used.
diff --git a/include/drivers/arm/cci.h b/include/drivers/arm/cci.h
new file mode 100644
index 000000000..2401e85a5
--- /dev/null
+++ b/include/drivers/arm/cci.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __CCI_H__
+#define __CCI_H__
+
+/* Slave interface offsets from PERIPHBASE */
+#define SLAVE_IFACE6_OFFSET		0x7000
+#define SLAVE_IFACE5_OFFSET		0x6000
+#define SLAVE_IFACE4_OFFSET		0x5000
+#define SLAVE_IFACE3_OFFSET		0x4000
+#define SLAVE_IFACE2_OFFSET		0x3000
+#define SLAVE_IFACE1_OFFSET		0x2000
+#define SLAVE_IFACE0_OFFSET		0x1000
+#define SLAVE_IFACE_OFFSET(index)	(SLAVE_IFACE0_OFFSET +	\
+					(0x1000 * (index)))
+
+/* Slave interface event and count register offsets from PERIPHBASE */
+#define EVENT_SELECT7_OFFSET		0x80000
+#define EVENT_SELECT6_OFFSET		0x70000
+#define EVENT_SELECT5_OFFSET		0x60000
+#define EVENT_SELECT4_OFFSET		0x50000
+#define EVENT_SELECT3_OFFSET		0x40000
+#define EVENT_SELECT2_OFFSET		0x30000
+#define EVENT_SELECT1_OFFSET		0x20000
+#define EVENT_SELECT0_OFFSET		0x10000
+#define EVENT_OFFSET(index)		(EVENT_SELECT0_OFFSET +	\
+					(0x10000 * (index)))
+
+/* Control and ID register offsets */
+#define CTRL_OVERRIDE_REG		0x0
+#define SECURE_ACCESS_REG		0x8
+#define STATUS_REG			0xc
+#define IMPRECISE_ERR_REG		0x10
+#define PERFMON_CTRL_REG		0x100
+#define IFACE_MON_CTRL_REG		0x104
+
+/* Component and peripheral ID registers */
+#define PERIPHERAL_ID0			0xFE0
+#define PERIPHERAL_ID1			0xFE4
+#define PERIPHERAL_ID2			0xFE8
+#define PERIPHERAL_ID3			0xFEC
+#define PERIPHERAL_ID4			0xFD0
+#define PERIPHERAL_ID5			0xFD4
+#define PERIPHERAL_ID6			0xFD8
+#define PERIPHERAL_ID7			0xFDC
+
+#define COMPONENT_ID0			0xFF0
+#define COMPONENT_ID1			0xFF4
+#define COMPONENT_ID2			0xFF8
+#define COMPONENT_ID3			0xFFC
+#define COMPONENT_ID4			0x1000
+#define COMPONENT_ID5			0x1004
+#define COMPONENT_ID6			0x1008
+#define COMPONENT_ID7			0x100C
+
+/* Slave interface register offsets */
+#define SNOOP_CTRL_REG			0x0
+#define SH_OVERRIDE_REG			0x4
+#define READ_CHNL_QOS_VAL_OVERRIDE_REG	0x100
+#define WRITE_CHNL_QOS_VAL_OVERRIDE_REG	0x104
+#define MAX_OT_REG			0x110
+
+/* Snoop Control register bit definitions */
+#define DVM_EN_BIT			(1 << 1)
+#define SNOOP_EN_BIT			(1 << 0)
+#define SUPPORT_SNOOPS			(1 << 30)
+#define SUPPORT_DVM			(1 << 31)
+
+/* Status register bit definitions */
+#define CHANGE_PENDING_BIT		(1 << 0)
+
+/* Event and count register offsets */
+#define EVENT_SELECT_REG		0x0
+#define EVENT_COUNT_REG			0x4
+#define COUNT_CNTRL_REG			0x8
+#define COUNT_OVERFLOW_REG		0xC
+
+/* Slave interface monitor registers */
+#define INT_MON_REG_SI0			0x90000
+#define INT_MON_REG_SI1			0x90004
+#define INT_MON_REG_SI2			0x90008
+#define INT_MON_REG_SI3			0x9000C
+#define INT_MON_REG_SI4			0x90010
+#define INT_MON_REG_SI5			0x90014
+#define INT_MON_REG_SI6			0x90018
+
+/* Master interface monitor registers */
+#define INT_MON_REG_MI0			0x90100
+#define INT_MON_REG_MI1			0x90104
+#define INT_MON_REG_MI2			0x90108
+#define INT_MON_REG_MI3			0x9010c
+#define INT_MON_REG_MI4			0x90110
+#define INT_MON_REG_MI5			0x90114
+
+#define SLAVE_IF_UNUSED			-1
+
+#if ARM_CCI_PRODUCT_ID == 400
+	#define CCI_SLAVE_INTERFACE_COUNT	5
+#elif ARM_CCI_PRODUCT_ID == 500
+	#define CCI_SLAVE_INTERFACE_COUNT	7
+#else
+	#error "Invalid CCI product or CCI not supported"
+#endif
+
+#ifndef __ASSEMBLY__
+
+#include <stdint.h>
+
+/* Function declarations */
+
+/*
+ * The ARM CCI driver needs the following:
+ * 1. Base address of the CCI-500/CCI-400
+ * 2. An array  of map between AMBA 4 master ids and ACE/ACE lite slave
+ *    interfaces.
+ * 3. Size of the array.
+ *
+ * SLAVE_IF_UNUSED should be used in the map to represent no AMBA 4 master exists
+ * for that interface.
+ */
+void cci_init(unsigned long cci_base,
+	const int *map,
+	unsigned int num_cci_masters);
+
+void cci_enable_snoop_dvm_reqs(unsigned int master_id);
+void cci_disable_snoop_dvm_reqs(unsigned int master_id);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CCI_H__ */
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index 52916846c..5e2167374 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -61,6 +61,14 @@
 #define MPIDR_AFFLVL1		1
 #define MPIDR_AFFLVL2		2
 #define MPIDR_AFFLVL3		3
+#define MPIDR_AFFLVL0_VAL(mpidr) \
+		((mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK)
+#define MPIDR_AFFLVL1_VAL(mpidr) \
+		((mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK)
+#define MPIDR_AFFLVL2_VAL(mpidr) \
+		((mpidr >> MPIDR_AFF2_SHIFT) & MPIDR_AFFLVL_MASK)
+#define MPIDR_AFFLVL3_VAL(mpidr) \
+		((mpidr >> MPIDR_AFF3_SHIFT) & MPIDR_AFFLVL_MASK)
 /*
  * The MPIDR_MAX_AFFLVL count starts from 0. Take care to
  * add one while using this macro to define array sizes.
diff --git a/lib/aarch64/xlat_tables.c b/lib/aarch64/xlat_tables.c
index ddc9ba88c..fa1a03dab 100644
--- a/lib/aarch64/xlat_tables.c
+++ b/lib/aarch64/xlat_tables.c
@@ -31,6 +31,7 @@
 #include <arch.h>
 #include <arch_helpers.h>
 #include <assert.h>
+#include <bl_common.h>
 #include <cassert.h>
 #include <platform_def.h>
 #include <string.h>
@@ -89,7 +90,7 @@ void mmap_add_region(unsigned long base_pa, unsigned long base_va,
 			unsigned long size, unsigned attr)
 {
 	mmap_region_t *mm = mmap;
-	mmap_region_t *mm_last = mm + sizeof(mmap) / sizeof(mmap[0]) - 1;
+	mmap_region_t *mm_last = mm + ARRAY_SIZE(mmap) - 1;
 	unsigned long pa_end = base_pa + size - 1;
 	unsigned long va_end = base_va + size - 1;
 
diff --git a/plat/fvp/aarch64/fvp_common.c b/plat/fvp/aarch64/fvp_common.c
index fcda2a878..a8afb4e84 100644
--- a/plat/fvp/aarch64/fvp_common.c
+++ b/plat/fvp/aarch64/fvp_common.c
@@ -32,7 +32,7 @@
 #include <arch_helpers.h>
 #include <arm_gic.h>
 #include <bl_common.h>
-#include <cci400.h>
+#include <cci.h>
 #include <debug.h>
 #include <mmio.h>
 #include <platform.h>
@@ -115,7 +115,7 @@ const mmap_region_t fvp_mmap[] = {
 };
 #endif
 
-CASSERT((sizeof(fvp_mmap)/sizeof(fvp_mmap[0])) + FVP_BL_REGIONS \
+CASSERT(ARRAY_SIZE(fvp_mmap) + FVP_BL_REGIONS \
 		<= MAX_MMAP_REGIONS, assert_max_mmap_regions);
 
 /* Array of secure interrupts to be configured by the gic driver */
@@ -132,9 +132,6 @@ const unsigned int irq_sec_array[] = {
 	IRQ_SEC_SGI_7
 };
 
-const unsigned int num_sec_irqs = sizeof(irq_sec_array) /
-	sizeof(irq_sec_array[0]);
-
 /*******************************************************************************
  * Macro generating the code for the function setting up the pagetables as per
  * the platform memory map & initialize the mmu, for the given exception level
@@ -298,6 +295,12 @@ uint64_t plat_get_syscnt_freq(void)
 	return counter_base_frequency;
 }
 
+/* Map of CCI masters with the slave interfaces they are connected */
+static const int cci_map[] = {
+	CCI400_CLUSTER0_SL_IFACE_IX,
+	CCI400_CLUSTER1_SL_IFACE_IX
+};
+
 void fvp_cci_init(void)
 {
 	/*
@@ -305,19 +308,20 @@ void fvp_cci_init(void)
 	 */
 	if (plat_config.flags & CONFIG_HAS_CCI)
 		cci_init(CCI400_BASE,
-			CCI400_SL_IFACE3_CLUSTER_IX,
-			CCI400_SL_IFACE4_CLUSTER_IX);
+			cci_map,
+			ARRAY_SIZE(cci_map));
 }
 
 void fvp_cci_enable(void)
 {
-	/*
-	 * Enable CCI-400 coherency for this cluster. No need
-	 * for locks as no other cpu is active at the
-	 * moment
-	 */
 	if (plat_config.flags & CONFIG_HAS_CCI)
-		cci_enable_cluster_coherency(read_mpidr());
+		cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
+}
+
+void fvp_cci_disable(void)
+{
+	if (plat_config.flags & CONFIG_HAS_CCI)
+		cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
 }
 
 void fvp_gic_init(void)
@@ -326,7 +330,7 @@ void fvp_gic_init(void)
 		plat_config.gicd_base,
 		BASE_GICR_BASE,
 		irq_sec_array,
-		num_sec_irqs);
+		ARRAY_SIZE(irq_sec_array));
 }
 
 
diff --git a/plat/fvp/fvp_def.h b/plat/fvp/fvp_def.h
index e3442fce7..a2f2da8c5 100644
--- a/plat/fvp/fvp_def.h
+++ b/plat/fvp/fvp_def.h
@@ -236,8 +236,8 @@
  * CCI-400 related constants
  ******************************************************************************/
 #define CCI400_BASE			0x2c090000
-#define CCI400_SL_IFACE3_CLUSTER_IX	0
-#define CCI400_SL_IFACE4_CLUSTER_IX	1
+#define CCI400_CLUSTER0_SL_IFACE_IX	3
+#define CCI400_CLUSTER1_SL_IFACE_IX	4
 
 /*******************************************************************************
  * GIC-400 & interrupt handling related constants
diff --git a/plat/fvp/fvp_pm.c b/plat/fvp/fvp_pm.c
index c15d845d8..3737ecff2 100644
--- a/plat/fvp/fvp_pm.c
+++ b/plat/fvp/fvp_pm.c
@@ -32,7 +32,7 @@
 #include <arm_gic.h>
 #include <assert.h>
 #include <bakery_lock.h>
-#include <cci400.h>
+#include <cci.h>
 #include <debug.h>
 #include <mmio.h>
 #include <platform.h>
@@ -82,8 +82,7 @@ static void fvp_cluster_pwrdwn_common(void)
 	uint64_t mpidr = read_mpidr_el1();
 
 	/* Disable coherency if this cluster is to be turned off */
-	if (get_plat_config()->flags & CONFIG_HAS_CCI)
-		cci_disable_cluster_coherency(mpidr);
+	fvp_cci_disable();
 
 	/* Program the power controller to turn the cluster off */
 	fvp_pwrc_write_pcoffr(mpidr);
diff --git a/plat/fvp/fvp_private.h b/plat/fvp/fvp_private.h
index 3949754b9..4f60a1619 100644
--- a/plat/fvp/fvp_private.h
+++ b/plat/fvp/fvp_private.h
@@ -138,6 +138,7 @@ int fvp_config_setup(void);
 
 void fvp_cci_init(void);
 void fvp_cci_enable(void);
+void fvp_cci_disable(void);
 
 void fvp_gic_init(void);
 
diff --git a/plat/fvp/include/plat_macros.S b/plat/fvp/include/plat_macros.S
index f050261fb..9e5ef4d56 100644
--- a/plat/fvp/include/plat_macros.S
+++ b/plat/fvp/include/plat_macros.S
@@ -27,7 +27,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-#include <cci400.h>
+#include <cci.h>
 #include <gic_v2.h>
 #include <plat_config.h>
 #include "../fvp_def.h"
diff --git a/plat/fvp/platform.mk b/plat/fvp/platform.mk
index bcee3286d..7cf571e45 100644
--- a/plat/fvp/platform.mk
+++ b/plat/fvp/platform.mk
@@ -57,7 +57,7 @@ PLAT_BL_COMMON_SOURCES	:=	drivers/arm/pl011/pl011_console.S		\
 				plat/common/aarch64/plat_common.c		\
 				plat/fvp/fvp_io_storage.c
 
-BL1_SOURCES		+=	drivers/arm/cci400/cci400.c			\
+BL1_SOURCES		+=	drivers/arm/cci/cci.c				\
 				lib/cpus/aarch64/aem_generic.S			\
 				lib/cpus/aarch64/cortex_a53.S			\
 				lib/cpus/aarch64/cortex_a57.S			\
@@ -72,7 +72,7 @@ BL2_SOURCES		+=	drivers/arm/tzc400/tzc400.c			\
 				plat/fvp/fvp_security.c				\
 				plat/fvp/aarch64/fvp_common.c
 
-BL31_SOURCES		+=	drivers/arm/cci400/cci400.c			\
+BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
 				drivers/arm/gic/arm_gic.c			\
 				drivers/arm/gic/gic_v2.c			\
 				drivers/arm/gic/gic_v3.c			\
diff --git a/plat/juno/aarch64/juno_common.c b/plat/juno/aarch64/juno_common.c
index 6ea0b1558..6b6e18517 100644
--- a/plat/juno/aarch64/juno_common.c
+++ b/plat/juno/aarch64/juno_common.c
@@ -32,6 +32,7 @@
 #include <arm_gic.h>
 #include <assert.h>
 #include <bl_common.h>
+#include <cci.h>
 #include <debug.h>
 #include <mmio.h>
 #include <platform.h>
@@ -114,7 +115,7 @@ static const mmap_region_t juno_mmap[] = {
 };
 #endif
 
-CASSERT((sizeof(juno_mmap)/sizeof(juno_mmap[0])) + JUNO_BL_REGIONS \
+CASSERT(ARRAY_SIZE(juno_mmap) + JUNO_BL_REGIONS \
 		<= MAX_MMAP_REGIONS, assert_max_mmap_regions);
 
 /* Array of secure interrupts to be configured by the gic driver */
@@ -136,8 +137,17 @@ const unsigned int irq_sec_array[] = {
 	IRQ_SEC_SGI_7
 };
 
-const unsigned int num_sec_irqs = sizeof(irq_sec_array) /
-	sizeof(irq_sec_array[0]);
+static const int cci_map[] = {
+	CCI400_CLUSTER0_SL_IFACE_IX,
+	CCI400_CLUSTER1_SL_IFACE_IX
+};
+
+void plat_cci_init(void)
+{
+	cci_init(CCI400_BASE,
+		cci_map,
+		ARRAY_SIZE(cci_map));
+}
 
 /*******************************************************************************
  * Macro generating the code for the function setting up the pagetables as per
@@ -211,5 +221,9 @@ uint64_t plat_get_syscnt_freq(void)
 
 void plat_gic_init(void)
 {
-	arm_gic_init(GICC_BASE, GICD_BASE, 0, irq_sec_array, num_sec_irqs);
+	arm_gic_init(GICC_BASE,
+		GICD_BASE,
+		0,
+		irq_sec_array,
+		ARRAY_SIZE(irq_sec_array));
 }
diff --git a/plat/juno/bl1_plat_setup.c b/plat/juno/bl1_plat_setup.c
index 2aeaba618..3b3471a85 100644
--- a/plat/juno/bl1_plat_setup.c
+++ b/plat/juno/bl1_plat_setup.c
@@ -31,7 +31,7 @@
 #include <arch_helpers.h>
 #include <assert.h>
 #include <bl_common.h>
-#include <cci400.h>
+#include <cci.h>
 #include <console.h>
 #include <debug.h>
 #include <mmio.h>
@@ -82,10 +82,8 @@ void bl1_early_platform_setup(void)
 	 * Enable CCI-400 for this cluster. No need for locks as no other cpu is
 	 * active at the moment
 	 */
-	cci_init(CCI400_BASE,
-		 CCI400_SL_IFACE3_CLUSTER_IX,
-		 CCI400_SL_IFACE4_CLUSTER_IX);
-	cci_enable_cluster_coherency(read_mpidr());
+	plat_cci_init();
+	cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
 
 	/* Allow BL1 to see the whole Trusted RAM */
 	bl1_tzram_layout.total_base = TZRAM_BASE;
diff --git a/plat/juno/bl31_plat_setup.c b/plat/juno/bl31_plat_setup.c
index 1d337688d..194d6205d 100644
--- a/plat/juno/bl31_plat_setup.c
+++ b/plat/juno/bl31_plat_setup.c
@@ -33,7 +33,7 @@
 #include <assert.h>
 #include <bl31.h>
 #include <bl_common.h>
-#include <cci400.h>
+#include <cci.h>
 #include <console.h>
 #include <mmio.h>
 #include <platform.h>
@@ -123,9 +123,7 @@ void bl31_early_platform_setup(bl31_params_t *from_bl2,
 	 * a warm boot. BL1 should have already enabled CCI coherency for this
 	 * cluster during cold boot.
 	 */
-	cci_init(CCI400_BASE,
-		 CCI400_SL_IFACE3_CLUSTER_IX,
-		 CCI400_SL_IFACE4_CLUSTER_IX);
+	plat_cci_init();
 
 	/*
 	 * Check params passed from BL2 should not be NULL,
diff --git a/plat/juno/include/plat_macros.S b/plat/juno/include/plat_macros.S
index a9d2466b8..ac1077b20 100644
--- a/plat/juno/include/plat_macros.S
+++ b/plat/juno/include/plat_macros.S
@@ -28,7 +28,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cci400.h>
+#include <cci.h>
 #include <gic_v2.h>
 #include "platform_def.h"
 #include "../juno_def.h"
diff --git a/plat/juno/juno_def.h b/plat/juno/juno_def.h
index 62bdda3bc..ab39f3ca8 100644
--- a/plat/juno/juno_def.h
+++ b/plat/juno/juno_def.h
@@ -261,8 +261,8 @@
  * CCI-400 related constants
  ******************************************************************************/
 #define CCI400_BASE			0x2c090000
-#define CCI400_SL_IFACE3_CLUSTER_IX	1
-#define CCI400_SL_IFACE4_CLUSTER_IX	0
+#define CCI400_CLUSTER0_SL_IFACE_IX	4
+#define CCI400_CLUSTER1_SL_IFACE_IX	3
 
 /*******************************************************************************
  * SCP <=> AP boot configuration
diff --git a/plat/juno/juno_private.h b/plat/juno/juno_private.h
index 9a5944cad..afb1bfcf6 100644
--- a/plat/juno/juno_private.h
+++ b/plat/juno/juno_private.h
@@ -154,6 +154,7 @@ unsigned long plat_get_ns_image_entrypoint(void);
 unsigned long platform_get_stack(unsigned long mpidr);
 uint64_t plat_get_syscnt_freq(void);
 void plat_gic_init(void);
+void plat_cci_init(void);
 
 /* Declarations for plat_topology.c */
 int plat_setup_topology(void);
diff --git a/plat/juno/plat_pm.c b/plat/juno/plat_pm.c
index 47338cfca..953e5f72a 100644
--- a/plat/juno/plat_pm.c
+++ b/plat/juno/plat_pm.c
@@ -31,8 +31,8 @@
 #include <assert.h>
 #include <arch_helpers.h>
 #include <arm_gic.h>
+#include <cci.h>
 #include <debug.h>
-#include <cci400.h>
 #include <errno.h>
 #include <platform.h>
 #include <platform_def.h>
@@ -159,8 +159,7 @@ void juno_affinst_on_finish(uint32_t afflvl, uint32_t state)
 	 * if this cluster was off.
 	 */
 	if (afflvl != MPIDR_AFFLVL0)
-		cci_enable_cluster_coherency(mpidr);
-
+		cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
 
 	/* Enable the gic cpu interface */
 	arm_gic_cpuif_setup();
@@ -187,7 +186,7 @@ static void juno_power_down_common(uint32_t afflvl)
 
 	/* Cluster is to be turned off, so disable coherency */
 	if (afflvl > MPIDR_AFFLVL0) {
-		cci_disable_cluster_coherency(read_mpidr_el1());
+		cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
 		cluster_state = scpi_power_off;
 	}
 
diff --git a/plat/juno/platform.mk b/plat/juno/platform.mk
index 3a05279e8..687781417 100644
--- a/plat/juno/platform.mk
+++ b/plat/juno/platform.mk
@@ -56,7 +56,7 @@ PLAT_BL_COMMON_SOURCES	:=	drivers/arm/pl011/pl011_console.S	\
 				plat/common/plat_gic.c			\
 				plat/juno/plat_io_storage.c
 
-BL1_SOURCES		+=	drivers/arm/cci400/cci400.c		\
+BL1_SOURCES		+=	drivers/arm/cci/cci.c			\
 				lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
 				plat/common/aarch64/platform_up_stack.S	\
@@ -75,7 +75,7 @@ BL2_SOURCES		+=	drivers/arm/tzc400/tzc400.c		\
 				plat/juno/scp_bootloader.c		\
 				plat/juno/scpi.c
 
-BL31_SOURCES		+=	drivers/arm/cci400/cci400.c		\
+BL31_SOURCES		+=	drivers/arm/cci/cci.c			\
 				drivers/arm/gic/arm_gic.c		\
 				drivers/arm/gic/gic_v2.c		\
 				drivers/arm/gic/gic_v3.c		\