openwrt/target/linux/layerscape/patches-5.4/701-net-0142-bus-fsl-mc-Some-apis-are-made-public-for-vfio.patch

From e8dd5b8ee227cc60f10073faaa0f74b36aa4f40f Mon Sep 17 00:00:00 2001
From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Date: Mon, 16 Apr 2018 12:26:38 +0300
Subject: [PATCH] bus: fsl-mc: Some apis are made public for vfio

Some of the APIs and data-structures are required for VFIO.
This patch moves dprc.h to public header files.
Also some APIs of mc-bus are made public for vfio.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
---
 drivers/bus/fsl-mc/fsl-mc-allocator.c |   2 +
 drivers/bus/fsl-mc/fsl-mc-bus.c       |   5 +-
 drivers/bus/fsl-mc/fsl-mc-private.h   | 414 ---------------------------------
 include/linux/fsl/mc.h                | 420 ++++++++++++++++++++++++++++++++++
 4 files changed, 425 insertions(+), 416 deletions(-)

--- a/drivers/bus/fsl-mc/fsl-mc-allocator.c
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -547,6 +547,7 @@ void fsl_mc_init_all_resource_pools(stru
 		mutex_init(&res_pool->mutex);
 	}
 }
+EXPORT_SYMBOL_GPL(fsl_mc_init_all_resource_pools);
 
 static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
 					 enum fsl_mc_pool_type pool_type)
@@ -571,6 +572,7 @@ void fsl_mc_cleanup_all_resource_pools(s
 	for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
 		fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
 }
+EXPORT_SYMBOL_GPL(fsl_mc_cleanup_all_resource_pools);
 
 /**
  * fsl_mc_allocator_probe - callback invoked when an allocatable device is
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -447,8 +447,8 @@ static int mc_get_version(struct fsl_mc_
 /**
  * fsl_mc_get_root_dprc - function to traverse to the root dprc
  */
-static void fsl_mc_get_root_dprc(struct device *dev,
-				 struct device **root_dprc_dev)
+void fsl_mc_get_root_dprc(struct device *dev,
+			  struct device **root_dprc_dev)
 {
 	if (!dev) {
 		*root_dprc_dev = NULL;
@@ -460,6 +460,7 @@ static void fsl_mc_get_root_dprc(struct
 			*root_dprc_dev = (*root_dprc_dev)->parent;
 	}
 }
+EXPORT_SYMBOL_GPL(fsl_mc_get_root_dprc);
 
 static int get_dprc_attr(struct fsl_mc_io *mc_io,
 			 int container_id, struct dprc_attributes *attr)
--- a/drivers/bus/fsl-mc/fsl-mc-private.h
+++ b/drivers/bus/fsl-mc/fsl-mc-private.h
@@ -10,8 +10,6 @@
 
 #include <linux/fsl/mc.h>
 #include <linux/mutex.h>
-#include <linux/ioctl.h>
-#include <linux/miscdevice.h>
 
 /*
  * Data Path Management Complex (DPMNG) General API
@@ -72,339 +70,6 @@ int dpmcp_reset(struct fsl_mc_io *mc_io,
 		u16 token);
 
 /*
- * Data Path Resource Container (DPRC) API
- */
-
-/* Minimal supported DPRC Version */
-#define DPRC_MIN_VER_MAJOR			6
-#define DPRC_MIN_VER_MINOR			0
-
-/* DPRC command versioning */
-#define DPRC_CMD_BASE_VERSION			1
-#define DPRC_CMD_2ND_VERSION			2
-#define DPRC_CMD_ID_OFFSET			4
-
-#define DPRC_CMD(id)	(((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
-#define DPRC_CMD_V2(id)	(((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_2ND_VERSION)
-
-/* DPRC command IDs */
-#define DPRC_CMDID_CLOSE                        DPRC_CMD(0x800)
-#define DPRC_CMDID_OPEN                         DPRC_CMD(0x805)
-#define DPRC_CMDID_GET_API_VERSION              DPRC_CMD(0xa05)
-
-#define DPRC_CMDID_GET_ATTR                     DPRC_CMD(0x004)
-#define DPRC_CMDID_RESET_CONT                   DPRC_CMD(0x005)
-
-#define DPRC_CMDID_SET_IRQ                      DPRC_CMD(0x010)
-#define DPRC_CMDID_SET_IRQ_ENABLE               DPRC_CMD(0x012)
-#define DPRC_CMDID_SET_IRQ_MASK                 DPRC_CMD(0x014)
-#define DPRC_CMDID_GET_IRQ_STATUS               DPRC_CMD(0x016)
-#define DPRC_CMDID_CLEAR_IRQ_STATUS             DPRC_CMD(0x017)
-
-#define DPRC_CMDID_GET_CONT_ID                  DPRC_CMD(0x830)
-#define DPRC_CMDID_GET_OBJ_COUNT                DPRC_CMD(0x159)
-#define DPRC_CMDID_GET_OBJ                      DPRC_CMD(0x15A)
-#define DPRC_CMDID_GET_OBJ_REG                  DPRC_CMD(0x15E)
-#define DPRC_CMDID_GET_OBJ_REG_V2               DPRC_CMD_V2(0x15E)
-#define DPRC_CMDID_SET_OBJ_IRQ                  DPRC_CMD(0x15F)
-
-struct dprc_cmd_open {
-	__le32 container_id;
-};
-
-struct dprc_cmd_reset_container {
-	__le32 child_container_id;
-};
-
-struct dprc_cmd_set_irq {
-	/* cmd word 0 */
-	__le32 irq_val;
-	u8 irq_index;
-	u8 pad[3];
-	/* cmd word 1 */
-	__le64 irq_addr;
-	/* cmd word 2 */
-	__le32 irq_num;
-};
-
-#define DPRC_ENABLE		0x1
-
-struct dprc_cmd_set_irq_enable {
-	u8 enable;
-	u8 pad[3];
-	u8 irq_index;
-};
-
-struct dprc_cmd_set_irq_mask {
-	__le32 mask;
-	u8 irq_index;
-};
-
-struct dprc_cmd_get_irq_status {
-	__le32 status;
-	u8 irq_index;
-};
-
-struct dprc_rsp_get_irq_status {
-	__le32 status;
-};
-
-struct dprc_cmd_clear_irq_status {
-	__le32 status;
-	u8 irq_index;
-};
-
-struct dprc_rsp_get_attributes {
-	/* response word 0 */
-	__le32 container_id;
-	__le32 icid;
-	/* response word 1 */
-	__le32 options;
-	__le32 portal_id;
-};
-
-struct dprc_rsp_get_obj_count {
-	__le32 pad;
-	__le32 obj_count;
-};
-
-struct dprc_cmd_get_obj {
-	__le32 obj_index;
-};
-
-struct dprc_rsp_get_obj {
-	/* response word 0 */
-	__le32 pad0;
-	__le32 id;
-	/* response word 1 */
-	__le16 vendor;
-	u8 irq_count;
-	u8 region_count;
-	__le32 state;
-	/* response word 2 */
-	__le16 version_major;
-	__le16 version_minor;
-	__le16 flags;
-	__le16 pad1;
-	/* response word 3-4 */
-	u8 type[16];
-	/* response word 5-6 */
-	u8 label[16];
-};
-
-struct dprc_cmd_get_obj_region {
-	/* cmd word 0 */
-	__le32 obj_id;
-	__le16 pad0;
-	u8 region_index;
-	u8 pad1;
-	/* cmd word 1-2 */
-	__le64 pad2[2];
-	/* cmd word 3-4 */
-	u8 obj_type[16];
-};
-
-struct dprc_rsp_get_obj_region {
-	/* response word 0 */
-	__le64 pad0;
-	/* response word 1 */
-	__le64 base_offset;
-	/* response word 2 */
-	__le32 size;
-	u8 type;
-	u8 pad2[3];
-	/* response word 3 */
-	__le32 flags;
-	__le32 pad3;
-	/* response word 4 */
-	/* base_addr may be zero if older MC firmware is used */
-	__le64 base_addr;
-};
-
-struct dprc_cmd_set_obj_irq {
-	/* cmd word 0 */
-	__le32 irq_val;
-	u8 irq_index;
-	u8 pad[3];
-	/* cmd word 1 */
-	__le64 irq_addr;
-	/* cmd word 2 */
-	__le32 irq_num;
-	__le32 obj_id;
-	/* cmd word 3-4 */
-	u8 obj_type[16];
-};
-
-/*
- * DPRC API for managing and querying DPAA resources
- */
-int dprc_open(struct fsl_mc_io *mc_io,
-	      u32 cmd_flags,
-	      int container_id,
-	      u16 *token);
-
-int dprc_close(struct fsl_mc_io *mc_io,
-	       u32 cmd_flags,
-	       u16 token);
-
-/* DPRC IRQ events */
-
-/* IRQ event - Indicates that a new object added to the container */
-#define DPRC_IRQ_EVENT_OBJ_ADDED		0x00000001
-/* IRQ event - Indicates that an object was removed from the container */
-#define DPRC_IRQ_EVENT_OBJ_REMOVED		0x00000002
-/*
- * IRQ event - Indicates that one of the descendant containers that opened by
- * this container is destroyed
- */
-#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED	0x00000010
-
-/*
- * IRQ event - Indicates that on one of the container's opened object is
- * destroyed
- */
-#define DPRC_IRQ_EVENT_OBJ_DESTROYED		0x00000020
-
-/* Irq event - Indicates that object is created at the container */
-#define DPRC_IRQ_EVENT_OBJ_CREATED		0x00000040
-
-/**
- * struct dprc_irq_cfg - IRQ configuration
- * @paddr:	Address that must be written to signal a message-based interrupt
- * @val:	Value to write into irq_addr address
- * @irq_num:	A user defined number associated with this IRQ
- */
-struct dprc_irq_cfg {
-	     phys_addr_t paddr;
-	     u32 val;
-	     int irq_num;
-};
-
-int dprc_set_irq(struct fsl_mc_io *mc_io,
-		 u32 cmd_flags,
-		 u16 token,
-		 u8 irq_index,
-		 struct dprc_irq_cfg *irq_cfg);
-
-int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
-			u32 cmd_flags,
-			u16 token,
-			u8 irq_index,
-			u8 en);
-
-int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
-		      u32 cmd_flags,
-		      u16 token,
-		      u8 irq_index,
-		      u32 mask);
-
-int dprc_get_irq_status(struct fsl_mc_io *mc_io,
-			u32 cmd_flags,
-			u16 token,
-			u8 irq_index,
-			u32 *status);
-
-int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
-			  u32 cmd_flags,
-			  u16 token,
-			  u8 irq_index,
-			  u32 status);
-
-/**
- * struct dprc_attributes - Container attributes
- * @container_id: Container's ID
- * @icid: Container's ICID
- * @portal_id: Container's portal ID
- * @options: Container's options as set at container's creation
- */
-struct dprc_attributes {
-	int container_id;
-	u32 icid;
-	int portal_id;
-	u64 options;
-};
-
-int dprc_get_attributes(struct fsl_mc_io *mc_io,
-			u32 cmd_flags,
-			u16 token,
-			struct dprc_attributes *attributes);
-
-int dprc_get_obj_count(struct fsl_mc_io *mc_io,
-		       u32 cmd_flags,
-		       u16 token,
-		       int *obj_count);
-
-int dprc_get_obj(struct fsl_mc_io *mc_io,
-		 u32 cmd_flags,
-		 u16 token,
-		 int obj_index,
-		 struct fsl_mc_obj_desc *obj_desc);
-
-int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
-		     u32 cmd_flags,
-		     u16 token,
-		     char *obj_type,
-		     int obj_id,
-		     u8 irq_index,
-		     struct dprc_irq_cfg *irq_cfg);
-
-/* Region flags */
-/* Cacheable - Indicates that region should be mapped as cacheable */
-#define DPRC_REGION_CACHEABLE	0x00000001
-#define DPRC_REGION_SHAREABLE	0x00000002
-
-/**
- * enum dprc_region_type - Region type
- * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
- * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
- */
-enum dprc_region_type {
-	DPRC_REGION_TYPE_MC_PORTAL,
-	DPRC_REGION_TYPE_QBMAN_PORTAL,
-	DPRC_REGION_TYPE_QBMAN_MEM_BACKED_PORTAL
-};
-
-/**
- * struct dprc_region_desc - Mappable region descriptor
- * @base_offset: Region offset from region's base address.
- *	For DPMCP and DPRC objects, region base is offset from SoC MC portals
- *	base address; For DPIO, region base is offset from SoC QMan portals
- *	base address
- * @size: Region size (in bytes)
- * @flags: Region attributes
- * @type: Portal region type
- */
-struct dprc_region_desc {
-	u32 base_offset;
-	u32 size;
-	u32 flags;
-	enum dprc_region_type type;
-	u64 base_address;
-};
-
-int dprc_get_obj_region(struct fsl_mc_io *mc_io,
-			u32 cmd_flags,
-			u16 token,
-			char *obj_type,
-			int obj_id,
-			u8 region_index,
-			struct dprc_region_desc *region_desc);
-
-int dprc_get_api_version(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 *major_ver,
-			 u16 *minor_ver);
-
-int dprc_get_container_id(struct fsl_mc_io *mc_io,
-			  u32 cmd_flags,
-			  int *container_id);
-
-int dprc_reset_container(struct fsl_mc_io *mc_io,
-			 u32 cmd_flags,
-			 u16 token,
-			 int child_container_id);
-
-/*
  * Data Path Buffer Pool (DPBP) API
  */
 
@@ -491,70 +156,6 @@ struct dpcon_cmd_set_notification {
 	__le64 user_ctx;
 };
 
-/**
- * Maximum number of total IRQs that can be pre-allocated for an MC bus'
- * IRQ pool
- */
-#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS	256
-
-/**
- * struct fsl_mc_resource_pool - Pool of MC resources of a given
- * type
- * @type: type of resources in the pool
- * @max_count: maximum number of resources in the pool
- * @free_count: number of free resources in the pool
- * @mutex: mutex to serialize access to the pool's free list
- * @free_list: anchor node of list of free resources in the pool
- * @mc_bus: pointer to the MC bus that owns this resource pool
- */
-struct fsl_mc_resource_pool {
-	enum fsl_mc_pool_type type;
-	int max_count;
-	int free_count;
-	struct mutex mutex;	/* serializes access to free_list */
-	struct list_head free_list;
-	struct fsl_mc_bus *mc_bus;
-};
-
-/**
- * struct fsl_mc_uapi - information associated with a device file
- * @misc: struct miscdevice linked to the root dprc
- * @device: newly created device in /dev
- * @mutex: mutex lock to serialize the open/release operations
- * @local_instance_in_use: local MC I/O instance in use or not
- * @static_mc_io: pointer to the static MC I/O object
- */
-struct fsl_mc_uapi {
-	struct miscdevice misc;
-	struct device *device;
-	struct mutex mutex; /* serialize open/release operations */
-	u32 local_instance_in_use;
-	struct fsl_mc_io *static_mc_io;
-};
-
-/**
- * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
- * @mc_dev: fsl-mc device for the bus device itself.
- * @resource_pools: array of resource pools (one pool per resource type)
- * for this MC bus. These resources represent allocatable entities
- * from the physical DPRC.
- * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
- * @scan_mutex: Serializes bus scanning
- * @dprc_attr: DPRC attributes
- * @uapi_misc: struct that abstracts the interaction with userspace
- */
-struct fsl_mc_bus {
-	struct fsl_mc_device mc_dev;
-	struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
-	struct fsl_mc_device_irq *irq_resources;
-	struct mutex scan_mutex;    /* serializes bus scanning */
-	struct dprc_attributes dprc_attr;
-	struct fsl_mc_uapi uapi_misc;
-};
-
-#define to_fsl_mc_bus(_mc_dev) \
-	container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
-
 int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
 				   struct fsl_mc_io *mc_io,
 				   struct device *parent_dev,
@@ -565,17 +166,10 @@ int __init dprc_driver_init(void);
 
 void dprc_driver_exit(void);
 
-int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
-		      const char *driver_override,
-		      unsigned int *total_irq_count);
 int __init fsl_mc_allocator_driver_init(void);
 
 void fsl_mc_allocator_driver_exit(void);
 
-void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
-
-void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
-
 int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
 					  enum fsl_mc_pool_type pool_type,
 					  struct fsl_mc_resource
@@ -588,14 +182,6 @@ int fsl_mc_msi_domain_alloc_irqs(struct
 
 void fsl_mc_msi_domain_free_irqs(struct device *dev);
 
-int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
-			   struct irq_domain **mc_msi_domain);
-
-int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
-			     unsigned int irq_count);
-
-void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
-
 int __must_check fsl_create_mc_io(struct device *dev,
 				  phys_addr_t mc_portal_phys_addr,
 				  u32 mc_portal_size,
--- a/include/linux/fsl/mc.h
+++ b/include/linux/fsl/mc.h
@@ -12,6 +12,8 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <linux/interrupt.h>
+#include <linux/ioctl.h>
+#include <linux/miscdevice.h>
 #include <uapi/linux/fsl_mc.h>
 
 #define FSL_MC_VENDOR_FREESCALE	0x1957
@@ -49,6 +51,9 @@ struct fsl_mc_driver {
 #define to_fsl_mc_driver(_drv) \
 	container_of(_drv, struct fsl_mc_driver, driver)
 
+#define to_fsl_mc_bus(_mc_dev) \
+	container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
+
 /**
  * enum fsl_mc_pool_type - Types of allocatable MC bus resources
  *
@@ -469,6 +474,339 @@ static inline bool is_fsl_mc_bus_dpseci(
 }
 
 /*
+ * Data Path Resource Container (DPRC) API
+ */
+
+/* Minimal supported DPRC Version */
+#define DPRC_MIN_VER_MAJOR			6
+#define DPRC_MIN_VER_MINOR			0
+
+/* DPRC command versioning */
+#define DPRC_CMD_BASE_VERSION			1
+#define DPRC_CMD_2ND_VERSION			2
+#define DPRC_CMD_ID_OFFSET			4
+
+#define DPRC_CMD(id)	(((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
+#define DPRC_CMD_V2(id)	(((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_2ND_VERSION)
+
+/* DPRC command IDs */
+#define DPRC_CMDID_CLOSE                        DPRC_CMD(0x800)
+#define DPRC_CMDID_OPEN                         DPRC_CMD(0x805)
+#define DPRC_CMDID_GET_API_VERSION              DPRC_CMD(0xa05)
+
+#define DPRC_CMDID_GET_ATTR                     DPRC_CMD(0x004)
+#define DPRC_CMDID_RESET_CONT                   DPRC_CMD(0x005)
+
+#define DPRC_CMDID_SET_IRQ                      DPRC_CMD(0x010)
+#define DPRC_CMDID_SET_IRQ_ENABLE               DPRC_CMD(0x012)
+#define DPRC_CMDID_SET_IRQ_MASK                 DPRC_CMD(0x014)
+#define DPRC_CMDID_GET_IRQ_STATUS               DPRC_CMD(0x016)
+#define DPRC_CMDID_CLEAR_IRQ_STATUS             DPRC_CMD(0x017)
+
+#define DPRC_CMDID_GET_CONT_ID                  DPRC_CMD(0x830)
+#define DPRC_CMDID_GET_OBJ_COUNT                DPRC_CMD(0x159)
+#define DPRC_CMDID_GET_OBJ                      DPRC_CMD(0x15A)
+#define DPRC_CMDID_GET_OBJ_REG                  DPRC_CMD(0x15E)
+#define DPRC_CMDID_GET_OBJ_REG_V2               DPRC_CMD_V2(0x15E)
+#define DPRC_CMDID_SET_OBJ_IRQ                  DPRC_CMD(0x15F)
+
+struct dprc_cmd_open {
+	__le32 container_id;
+};
+
+struct dprc_cmd_reset_container {
+	__le32 child_container_id;
+};
+
+struct dprc_cmd_set_irq {
+	/* cmd word 0 */
+	__le32 irq_val;
+	u8 irq_index;
+	u8 pad[3];
+	/* cmd word 1 */
+	__le64 irq_addr;
+	/* cmd word 2 */
+	__le32 irq_num;
+};
+
+#define DPRC_ENABLE		0x1
+
+struct dprc_cmd_set_irq_enable {
+	u8 enable;
+	u8 pad[3];
+	u8 irq_index;
+};
+
+struct dprc_cmd_set_irq_mask {
+	__le32 mask;
+	u8 irq_index;
+};
+
+struct dprc_cmd_get_irq_status {
+	__le32 status;
+	u8 irq_index;
+};
+
+struct dprc_rsp_get_irq_status {
+	__le32 status;
+};
+
+struct dprc_cmd_clear_irq_status {
+	__le32 status;
+	u8 irq_index;
+};
+
+struct dprc_rsp_get_attributes {
+	/* response word 0 */
+	__le32 container_id;
+	__le32 icid;
+	/* response word 1 */
+	__le32 options;
+	__le32 portal_id;
+};
+
+struct dprc_rsp_get_obj_count {
+	__le32 pad;
+	__le32 obj_count;
+};
+
+struct dprc_cmd_get_obj {
+	__le32 obj_index;
+};
+
+struct dprc_rsp_get_obj {
+	/* response word 0 */
+	__le32 pad0;
+	__le32 id;
+	/* response word 1 */
+	__le16 vendor;
+	u8 irq_count;
+	u8 region_count;
+	__le32 state;
+	/* response word 2 */
+	__le16 version_major;
+	__le16 version_minor;
+	__le16 flags;
+	__le16 pad1;
+	/* response word 3-4 */
+	u8 type[16];
+	/* response word 5-6 */
+	u8 label[16];
+};
+
+struct dprc_cmd_get_obj_region {
+	/* cmd word 0 */
+	__le32 obj_id;
+	__le16 pad0;
+	u8 region_index;
+	u8 pad1;
+	/* cmd word 1-2 */
+	__le64 pad2[2];
+	/* cmd word 3-4 */
+	u8 obj_type[16];
+};
+
+struct dprc_rsp_get_obj_region {
+	/* response word 0 */
+	__le64 pad0;
+	/* response word 1 */
+	__le64 base_offset;
+	/* response word 2 */
+	__le32 size;
+	u8 type;
+	u8 pad2[3];
+	/* response word 3 */
+	__le32 flags;
+	__le32 pad3;
+	/* response word 4 */
+	/* base_addr may be zero if older MC firmware is used */
+	__le64 base_addr;
+};
+
+struct dprc_cmd_set_obj_irq {
+	/* cmd word 0 */
+	__le32 irq_val;
+	u8 irq_index;
+	u8 pad[3];
+	/* cmd word 1 */
+	__le64 irq_addr;
+	/* cmd word 2 */
+	__le32 irq_num;
+	__le32 obj_id;
+	/* cmd word 3-4 */
+	u8 obj_type[16];
+};
+
+/*
+ * DPRC API for managing and querying DPAA resources
+ */
+int dprc_open(struct fsl_mc_io *mc_io,
+	      u32 cmd_flags,
+	      int container_id,
+	      u16 *token);
+
+int dprc_close(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token);
+
+/* DPRC IRQ events */
+
+/* IRQ event - Indicates that a new object added to the container */
+#define DPRC_IRQ_EVENT_OBJ_ADDED		0x00000001
+/* IRQ event - Indicates that an object was removed from the container */
+#define DPRC_IRQ_EVENT_OBJ_REMOVED		0x00000002
+/*
+ * IRQ event - Indicates that one of the descendant containers that opened by
+ * this container is destroyed
+ */
+#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED	0x00000010
+
+/*
+ * IRQ event - Indicates that on one of the container's opened object is
+ * destroyed
+ */
+#define DPRC_IRQ_EVENT_OBJ_DESTROYED		0x00000020
+
+/* Irq event - Indicates that object is created at the container */
+#define DPRC_IRQ_EVENT_OBJ_CREATED		0x00000040
+
+/**
+ * struct dprc_irq_cfg - IRQ configuration
+ * @paddr:	Address that must be written to signal a message-based interrupt
+ * @val:	Value to write into irq_addr address
+ * @irq_num:	A user defined number associated with this IRQ
+ */
+struct dprc_irq_cfg {
+	     phys_addr_t paddr;
+	     u32 val;
+	     int irq_num;
+};
+
+int dprc_set_irq(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 u8 irq_index,
+		 struct dprc_irq_cfg *irq_cfg);
+
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u8 en);
+
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
+		      u32 cmd_flags,
+		      u16 token,
+		      u8 irq_index,
+		      u32 mask);
+
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u32 *status);
+
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  u16 token,
+			  u8 irq_index,
+			  u32 status);
+
+/**
+ * struct dprc_attributes - Container attributes
+ * @container_id: Container's ID
+ * @icid: Container's ICID
+ * @portal_id: Container's portal ID
+ * @options: Container's options as set at container's creation
+ */
+struct dprc_attributes {
+	int container_id;
+	u32 icid;
+	int portal_id;
+	u64 options;
+};
+
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			struct dprc_attributes *attributes);
+
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
+		       u32 cmd_flags,
+		       u16 token,
+		       int *obj_count);
+
+int dprc_get_obj(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 int obj_index,
+		 struct fsl_mc_obj_desc *obj_desc);
+
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
+		     u32 cmd_flags,
+		     u16 token,
+		     char *obj_type,
+		     int obj_id,
+		     u8 irq_index,
+		     struct dprc_irq_cfg *irq_cfg);
+
+/* Region flags */
+/* Cacheable - Indicates that region should be mapped as cacheable */
+#define DPRC_REGION_CACHEABLE	0x00000001
+#define DPRC_REGION_SHAREABLE	0x00000002
+
+/**
+ * enum dprc_region_type - Region type
+ * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
+ * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
+ */
+enum dprc_region_type {
+	DPRC_REGION_TYPE_MC_PORTAL,
+	DPRC_REGION_TYPE_QBMAN_PORTAL,
+	DPRC_REGION_TYPE_QBMAN_MEM_BACKED_PORTAL
+};
+
+/**
+ * struct dprc_region_desc - Mappable region descriptor
+ * @base_offset: Region offset from region's base address.
+ *	For DPMCP and DPRC objects, region base is offset from SoC MC portals
+ *	base address; For DPIO, region base is offset from SoC QMan portals
+ *	base address
+ * @size: Region size (in bytes)
+ * @flags: Region attributes
+ * @type: Portal region type
+ */
+struct dprc_region_desc {
+	u32 base_offset;
+	u32 size;
+	u32 flags;
+	enum dprc_region_type type;
+	u64 base_address;
+};
+
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			char *obj_type,
+			int obj_id,
+			u8 region_index,
+			struct dprc_region_desc *region_desc);
+
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 *major_ver,
+			 u16 *minor_ver);
+
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  int *container_id);
+
+int dprc_reset_container(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 token,
+			 int child_container_id);
+
+/*
  * Data Path Buffer Pool (DPBP) API
  * Contains initialization APIs and runtime control APIs for DPBP
  */
@@ -576,4 +914,86 @@ int dpcon_set_notification(struct fsl_mc
 			   u16 token,
 			   struct dpcon_notification_cfg *cfg);
 
+struct irq_domain;
+struct msi_domain_info;
+
+/**
+ * Maximum number of total IRQs that can be pre-allocated for an MC bus'
+ * IRQ pool
+ */
+#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS	256
+
+/**
+ * struct fsl_mc_resource_pool - Pool of MC resources of a given
+ * type
+ * @type: type of resources in the pool
+ * @max_count: maximum number of resources in the pool
+ * @free_count: number of free resources in the pool
+ * @mutex: mutex to serialize access to the pool's free list
+ * @free_list: anchor node of list of free resources in the pool
+ * @mc_bus: pointer to the MC bus that owns this resource pool
+ */
+struct fsl_mc_resource_pool {
+	enum fsl_mc_pool_type type;
+	int max_count;
+	int free_count;
+	struct mutex mutex;	/* serializes access to free_list */
+	struct list_head free_list;
+	struct fsl_mc_bus *mc_bus;
+};
+
+/**
+ * struct fsl_mc_uapi - information associated with a device file
+ * @misc: struct miscdevice linked to the root dprc
+ * @device: newly created device in /dev
+ * @mutex: mutex lock to serialize the open/release operations
+ * @local_instance_in_use: local MC I/O instance in use or not
+ * @static_mc_io: pointer to the static MC I/O object
+ */
+struct fsl_mc_uapi {
+	struct miscdevice misc;
+	struct device *device;
+	struct mutex mutex; /* serialize open/release operations */
+	u32 local_instance_in_use;
+	struct fsl_mc_io *static_mc_io;
+};
+
+/**
+ * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
+ * @mc_dev: fsl-mc device for the bus device itself.
+ * @resource_pools: array of resource pools (one pool per resource type)
+ * for this MC bus. These resources represent allocatable entities
+ * from the physical DPRC.
+ * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
+ * @scan_mutex: Serializes bus scanning
+ * @dprc_attr: DPRC attributes
+ * @uapi_misc: struct that abstracts the interaction with userspace
+ */
+struct fsl_mc_bus {
+	struct fsl_mc_device mc_dev;
+	struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
+	struct fsl_mc_device_irq *irq_resources;
+	struct mutex scan_mutex;    /* serializes bus scanning */
+	struct dprc_attributes dprc_attr;
+	struct fsl_mc_uapi uapi_misc;
+};
+
+int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
+		      const char *driver_override,
+		      unsigned int *total_irq_count);
+
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
+			   struct irq_domain **mc_msi_domain);
+
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
+			     unsigned int irq_count);
+
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
+
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+void fsl_mc_get_root_dprc(struct device *dev, struct device **root_dprc_dev);
+
 #endif /* _FSL_MC_H_ */