xilinx: Move IPI functions to common file

pm_service ipi functions can be used by other xilinx
platforms. So move it to common directory. Also change
node_id member type in pm_proc structure so it can be
used for versal where device IDs are used instead of
node IDs.

To accommodate this change header files are re-organized.
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Reviewed-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>

plat/xilinx/zynqmp/pm_service/pm_common.h → plat/xilinx/common/include/pm_common.h

 /*
- * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -13,18 +13,7 @@
 #define PM_COMMON_H
 
 #include <stdint.h>
-
-#include <common/debug.h>
-
-#include "pm_defs.h"
-
-#define PAYLOAD_ARG_CNT		6U
-#define PAYLOAD_ARG_SIZE	4U	/* size in bytes */
-
-#define ZYNQMP_TZ_VERSION_MAJOR		1
-#define ZYNQMP_TZ_VERSION_MINOR		0
-#define ZYNQMP_TZ_VERSION		((ZYNQMP_TZ_VERSION_MAJOR << 16) | \
-					ZYNQMP_TZ_VERSION_MINOR)
+#include <plat_pm_common.h>
 
 /**
  * pm_ipi - struct for capturing IPI-channel specific info
@@ -46,12 +35,11 @@ struct pm_ipi {
  *		(in APU all processors share one IPI channel)
  */
 struct pm_proc {
-	const enum pm_node_id node_id;
+	const uint32_t node_id;
 	const unsigned int pwrdn_mask;
 	const struct pm_ipi *ipi;
 };
 
 const struct pm_proc *pm_get_proc(unsigned int cpuid);
-const struct pm_proc *pm_get_proc_by_node(enum pm_node_id nid);
 
 #endif /* PM_COMMON_H */

plat/xilinx/zynqmp/pm_service/pm_ipi.h → plat/xilinx/common/include/pm_ipi.h

 /*
- * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,8 +7,12 @@
 #ifndef PM_IPI_H
 #define PM_IPI_H
 
+#include <plat_ipi.h>
 #include "pm_common.h"
 
+#define IPI_BLOCKING		1
+#define IPI_NON_BLOCKING	0
+
 int pm_ipi_init(const struct pm_proc *proc);
 
 enum pm_ret_status pm_ipi_send(const struct pm_proc *proc,
@@ -21,5 +25,6 @@ enum pm_ret_status pm_ipi_send_sync(const struct pm_proc *proc,
 void pm_ipi_buff_read_callb(unsigned int *value, size_t count);
 void pm_ipi_irq_enable(const struct pm_proc *proc);
 void pm_ipi_irq_clear(const struct pm_proc *proc);
+uint32_t pm_ipi_irq_status(const struct pm_proc *proc);
 
 #endif /* PM_IPI_H */

plat/xilinx/zynqmp/pm_service/pm_ipi.c → plat/xilinx/common/pm_service/pm_ipi.c

@@ -4,7 +4,9 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+
 #include <arch_helpers.h>
+
 #include <lib/bakery_lock.h>
 #include <lib/mmio.h>
 
@@ -15,34 +17,9 @@
 
 #include "pm_ipi.h"
 
-/* IPI message buffers */
-#define IPI_BUFFER_BASEADDR	0xFF990000U
-
-#define IPI_BUFFER_APU_BASE	(IPI_BUFFER_BASEADDR + 0x400U)
-#define IPI_BUFFER_PMU_BASE	(IPI_BUFFER_BASEADDR + 0xE00U)
-
-#define IPI_BUFFER_LOCAL_BASE	IPI_BUFFER_APU_BASE
-#define IPI_BUFFER_REMOTE_BASE	IPI_BUFFER_PMU_BASE
-
-#define IPI_BUFFER_TARGET_LOCAL_OFFSET	0x80U
-#define IPI_BUFFER_TARGET_REMOTE_OFFSET	0x1C0U
-
-#define IPI_BUFFER_MAX_WORDS	8
-
-#define IPI_BUFFER_REQ_OFFSET	0x0U
-#define IPI_BUFFER_RESP_OFFSET	0x20U
-
-#define IPI_BLOCKING		1
-#define IPI_NON_BLOCKING	0
 
 DEFINE_BAKERY_LOCK(pm_secure_lock);
 
-const struct pm_ipi apu_ipi = {
-	.local_ipi_id = IPI_ID_APU,
-	.remote_ipi_id = IPI_ID_PMU0,
-	.buffer_base = IPI_BUFFER_APU_BASE,
-};
-
 /**
  * pm_ipi_init() - Initialize IPI peripheral for communication with
  *		   remote processor
@@ -239,3 +216,15 @@ void pm_ipi_irq_clear(const struct pm_proc *proc)
 {
 	ipi_mb_ack(proc->ipi->local_ipi_id, proc->ipi->remote_ipi_id);
 }
+
+uint32_t pm_ipi_irq_status(const struct pm_proc *proc)
+{
+	int ret;
+
+	ret = ipi_mb_enquire_status(proc->ipi->local_ipi_id,
+				    proc->ipi->remote_ipi_id);
+	if (ret & IPI_MB_STATUS_RECV_PENDING)
+		return 1;
+	else
+		return 0;
+}

plat/xilinx/zynqmp/include/plat_ipi.h

@@ -27,6 +27,25 @@
 #define IPI_ID_PL2	9U
 #define IPI_ID_PL3	10U
 
+/*********************************************************************
+ * IPI message buffers
+ ********************************************************************/
+#define IPI_BUFFER_BASEADDR	0xFF990000U
+
+#define IPI_BUFFER_APU_BASE	(IPI_BUFFER_BASEADDR + 0x400U)
+#define IPI_BUFFER_PMU_BASE	(IPI_BUFFER_BASEADDR + 0xE00U)
+
+#define IPI_BUFFER_LOCAL_BASE	IPI_BUFFER_APU_BASE
+#define IPI_BUFFER_REMOTE_BASE	IPI_BUFFER_PMU_BASE
+
+#define IPI_BUFFER_TARGET_LOCAL_OFFSET	0x80U
+#define IPI_BUFFER_TARGET_REMOTE_OFFSET	0x1C0U
+
+#define IPI_BUFFER_MAX_WORDS	8
+
+#define IPI_BUFFER_REQ_OFFSET	0x0U
+#define IPI_BUFFER_RESP_OFFSET	0x20U
+
 /*********************************************************************
  * Platform specific IPI API declarations
  ********************************************************************/

plat/xilinx/zynqmp/include/plat_pm_common.h

+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * Contains platform specific definitions of commonly used macros data types
+ * for PU Power Management. This file should be common for all PU's.
+ */
+
+#ifndef PLAT_PM_COMMON_H
+#define PLAT_PM_COMMON_H
+
+#include <stdint.h>
+#include <common/debug.h>
+#include "pm_defs.h"
+
+#define PAYLOAD_ARG_CNT		6U
+#define PAYLOAD_ARG_SIZE	4U	/* size in bytes */
+
+#define ZYNQMP_TZ_VERSION_MAJOR		1
+#define ZYNQMP_TZ_VERSION_MINOR		0
+#define ZYNQMP_TZ_VERSION		((ZYNQMP_TZ_VERSION_MAJOR << 16) | \
+					ZYNQMP_TZ_VERSION_MINOR)
+#endif /* _PLAT_PM_COMMON_H_ */

plat/xilinx/zynqmp/platform.mk

@@ -73,6 +73,7 @@ BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
 				lib/cpus/aarch64/aem_generic.S			\
 				lib/cpus/aarch64/cortex_a53.S			\
 				plat/common/plat_psci_common.c			\
+				plat/xilinx/common/pm_service/pm_ipi.c		\
 				plat/xilinx/zynqmp/bl31_zynqmp_setup.c		\
 				plat/xilinx/zynqmp/plat_psci.c			\
 				plat/xilinx/zynqmp/plat_zynqmp.c		\
@@ -85,6 +86,5 @@ BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
 				plat/xilinx/zynqmp/pm_service/pm_api_pinctrl.c	\
 				plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c	\
 				plat/xilinx/zynqmp/pm_service/pm_api_clock.c	\
-				plat/xilinx/zynqmp/pm_service/pm_ipi.c		\
 				plat/xilinx/zynqmp/pm_service/pm_client.c	\
 				plat/xilinx/zynqmp/ipi_mailbox_service/ipi_mailbox_svc.c

plat/xilinx/zynqmp/pm_service/pm_client.c

@@ -19,6 +19,7 @@
 #include <lib/mmio.h>
 #include <lib/utils.h>
 
+#include <plat_ipi.h>
 #include <zynqmp_def.h>
 #include "pm_api_sys.h"
 #include "pm_client.h"
@@ -35,6 +36,12 @@ DEFINE_BAKERY_LOCK(pm_client_secure_lock);
 
 extern const struct pm_ipi apu_ipi;
 
+const struct pm_ipi apu_ipi = {
+	.local_ipi_id = IPI_ID_APU,
+	.remote_ipi_id = IPI_ID_PMU0,
+	.buffer_base = IPI_BUFFER_APU_BASE,
+};
+
 static uint32_t suspend_mode = PM_SUSPEND_MODE_STD;
 
 /* Order in pm_procs_all array must match cpu ids */

plat/xilinx/zynqmp/pm_service/pm_client.h

@@ -21,6 +21,7 @@ void pm_client_abort_suspend(void);
 void pm_client_wakeup(const struct pm_proc *proc);
 enum pm_ret_status set_ocm_retention(void);
 enum pm_ret_status pm_set_suspend_mode(uint32_t mode);
+const struct pm_proc *pm_get_proc_by_node(enum pm_node_id nid);
 
 /* Global variables to be set in pm_client.c */
 extern const struct pm_proc *primary_proc;