path: root/include/linux/fsl/mc.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Freescale Management Complex (MC) bus public interface
 *
 * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
 * Author: German Rivera <German.Rivera@freescale.com>
 *
 */
#ifndef _FSL_MC_H_
#define _FSL_MC_H_

#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

struct irq_domain;
struct msi_domain_info;

struct fsl_mc_device;
struct fsl_mc_io;

/**
 * struct fsl_mc_driver - MC object device driver object
 * @driver: Generic device driver
 * @match_id_table: table of supported device matching Ids
 * @probe: Function called when a device is added
 * @remove: Function called when a device is removed
 * @shutdown: Function called at shutdown time to quiesce the device
 * @suspend: Function called when a device is stopped
 * @resume: Function called when a device is resumed
 *
 * Generic DPAA device driver object for device drivers that are registered
 * with a DPRC bus. This structure is to be embedded in each device-specific
 * driver structure.
 */
struct fsl_mc_driver {
	struct device_driver driver;
	const struct fsl_mc_device_id *match_id_table;
	int (*probe)(struct fsl_mc_device *dev);
	int (*remove)(struct fsl_mc_device *dev);
	void (*shutdown)(struct fsl_mc_device *dev);
	int (*suspend)(struct fsl_mc_device *dev, pm_message_t state);
	int (*resume)(struct fsl_mc_device *dev);
};

#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
 *
 * Entries in these enum are used as indices in the array of resource
 * pools of an fsl_mc_bus object.
 */
enum fsl_mc_pool_type {
	FSL_MC_POOL_DPMCP = 0x0,    /* corresponds to "dpmcp" in the MC */
	FSL_MC_POOL_DPBP,	    /* corresponds to "dpbp" in the MC */
	FSL_MC_POOL_DPCON,	    /* corresponds to "dpcon" in the MC */
	FSL_MC_POOL_IRQ,

	/*
	 * NOTE: New resource pool types must be added before this entry
	 */
	FSL_MC_NUM_POOL_TYPES
};

/**
 * struct fsl_mc_resource - MC generic resource
 * @type: type of resource
 * @id: unique MC resource Id within the resources of the same type
 * @data: pointer to resource-specific data if the resource is currently
 * allocated, or NULL if the resource is not currently allocated.
 * @parent_pool: pointer to the parent resource pool from which this
 * resource is allocated from.
 * @node: Node in the free list of the corresponding resource pool
 *
 * NOTE: This structure is to be embedded as a field of specific
 * MC resource structures.
 */
struct fsl_mc_resource {
	enum fsl_mc_pool_type type;
	s32 id;
	void *data;
	struct fsl_mc_resource_pool *parent_pool;
	struct list_head node;
};

/**
 * struct fsl_mc_device_irq - MC object device message-based interrupt
 * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs()
 * @mc_dev: MC object device that owns this interrupt
 * @dev_irq_index: device-relative IRQ index
 * @resource: MC generic resource associated with the interrupt
 */
struct fsl_mc_device_irq {
	struct msi_desc *msi_desc;
	struct fsl_mc_device *mc_dev;
	u8 dev_irq_index;
	struct fsl_mc_resource resource;
};

#define to_fsl_mc_irq(_mc_resource) \
	container_of(_mc_resource, struct fsl_mc_device_irq, resource)

/* Opened state - Indicates that an object is open by at least one owner */
#define FSL_MC_OBJ_STATE_OPEN		0x00000001
/* Plugged state - Indicates that the object is plugged */
#define FSL_MC_OBJ_STATE_PLUGGED	0x00000002

/**
 * Shareability flag - Object flag indicating no memory shareability.
 * the object generates memory accesses that are non coherent with other
 * masters;
 * user is responsible for proper memory handling through IOMMU configuration.
 */
#define FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY	0x0001

/**
 * struct fsl_mc_obj_desc - Object descriptor
 * @type: Type of object: NULL terminated string
 * @id: ID of logical object resource
 * @vendor: Object vendor identifier
 * @ver_major: Major version number
 * @ver_minor:  Minor version number
 * @irq_count: Number of interrupts supported by the object
 * @region_count: Number of mappable regions supported by the object
 * @state: Object state: combination of FSL_MC_OBJ_STATE_ states
 * @label: Object label: NULL terminated string
 * @flags: Object's flags
 */
struct fsl_mc_obj_desc {
	char type[16];
	int id;
	u16 vendor;
	u16 ver_major;
	u16 ver_minor;
	u8 irq_count;
	u8 region_count;
	u32 state;
	char label[16];
	u16 flags;
};

/**
 * Bit masks for a MC object device (struct fsl_mc_device) flags
 */
#define FSL_MC_IS_DPRC	0x0001

/**
 * struct fsl_mc_device - MC object device object
 * @dev: Linux driver model device object
 * @dma_mask: Default DMA mask
 * @flags: MC object device flags
 * @icid: Isolation context ID for the device
 * @mc_handle: MC handle for the corresponding MC object opened
 * @mc_io: Pointer to MC IO object assigned to this device or
 * NULL if none.
 * @obj_desc: MC description of the DPAA device
 * @regions: pointer to array of MMIO region entries
 * @irqs: pointer to array of pointers to interrupts allocated to this device
 * @resource: generic resource associated with this MC object device, if any.
 * @driver_override: Driver name to force a match
 *
 * Generic device object for MC object devices that are "attached" to a
 * MC bus.
 *
 * NOTES:
 * - For a non-DPRC object its icid is the same as its parent DPRC's icid.
 * - The SMMU notifier callback gets invoked after device_add() has been
 *   called for an MC object device, but before the device-specific probe
 *   callback gets called.
 * - DP_OBJ_DPRC objects are the only MC objects that have built-in MC
 *   portals. For all other MC objects, their device drivers are responsible for
 *   allocating MC portals for them by calling fsl_mc_portal_allocate().
 * - Some types of MC objects (e.g., DP_OBJ_DPBP, DP_OBJ_DPCON) are
 *   treated as resources that can be allocated/deallocated from the
 *   corresponding resource pool in the object's parent DPRC, using the
 *   fsl_mc_object_allocate()/fsl_mc_object_free() functions. These MC objects
 *   are known as "allocatable" objects. For them, the corresponding
 *   fsl_mc_device's 'resource' points to the associated resource object.
 *   For MC objects that are not allocatable (e.g., DP_OBJ_DPRC, DP_OBJ_DPNI),
 *   'resource' is NULL.
 */
struct fsl_mc_device {
	struct device dev;
	u64 dma_mask;
	u16 flags;
	u32 icid;
	u16 mc_handle;
	struct fsl_mc_io *mc_io;
	struct fsl_mc_obj_desc obj_desc;
	struct resource *regions;
	struct fsl_mc_device_irq **irqs;
	struct fsl_mc_resource *resource;
	struct device_link *consumer_link;
	const char *driver_override;
};

#define to_fsl_mc_device(_dev) \
	container_of(_dev, struct fsl_mc_device, dev)

struct mc_cmd_header {
	u8 src_id;
	u8 flags_hw;
	u8 status;
	u8 flags_sw;
	__le16 token;
	__le16 cmd_id;
};

enum mc_cmd_status {
	MC_CMD_STATUS_OK = 0x0, /* Completed successfully */
	MC_CMD_STATUS_READY = 0x1, /* Ready to be processed */
	MC_CMD_STATUS_AUTH_ERR = 0x3, /* Authentication error */
	MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /* No privilege */
	MC_CMD_STATUS_DMA_ERR = 0x5, /* DMA or I/O error */
	MC_CMD_STATUS_CONFIG_ERR = 0x6, /* Configuration error */
	MC_CMD_STATUS_TIMEOUT = 0x7, /* Operation timed out */
	MC_CMD_STATUS_NO_RESOURCE = 0x8, /* No resources */
	MC_CMD_STATUS_NO_MEMORY = 0x9, /* No memory available */
	MC_CMD_STATUS_BUSY = 0xA, /* Device is busy */
	MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /* Unsupported operation */
	MC_CMD_STATUS_INVALID_STATE = 0xC /* Invalid state */
};

/*
 * MC command flags
 */

/* High priority flag */
#define MC_CMD_FLAG_PRI		0x80
/* Command completion flag */
#define MC_CMD_FLAG_INTR_DIS	0x01

static inline __le64 mc_encode_cmd_header(u16 cmd_id,
					  u32 cmd_flags,
					  u16 token)
{
	__le64 header = 0;
	struct mc_cmd_header *hdr = (struct mc_cmd_header *)&header;

	hdr->cmd_id = cpu_to_le16(cmd_id);
	hdr->token  = cpu_to_le16(token);
	hdr->status = MC_CMD_STATUS_READY;
	if (cmd_flags & MC_CMD_FLAG_PRI)
		hdr->flags_hw = MC_CMD_FLAG_PRI;
	if (cmd_flags & MC_CMD_FLAG_INTR_DIS)
		hdr->flags_sw = MC_CMD_FLAG_INTR_DIS;

	return header;
}

static inline u16 mc_cmd_hdr_read_token(struct fsl_mc_command *cmd)
{
	struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
	u16 token = le16_to_cpu(hdr->token);

	return token;
}

struct mc_rsp_create {
	__le32 object_id;
};

struct mc_rsp_api_ver {
	__le16 major_ver;
	__le16 minor_ver;
};

static inline u32 mc_cmd_read_object_id(struct fsl_mc_command *cmd)
{
	struct mc_rsp_create *rsp_params;

	rsp_params = (struct mc_rsp_create *)cmd->params;
	return le32_to_cpu(rsp_params->object_id);
}

static inline void mc_cmd_read_api_version(struct fsl_mc_command *cmd,
					   u16 *major_ver,
					   u16 *minor_ver)
{
	struct mc_rsp_api_ver *rsp_params;

	rsp_params = (struct mc_rsp_api_ver *)cmd->params;
	*major_ver = le16_to_cpu(rsp_params->major_ver);
	*minor_ver = le16_to_cpu(rsp_params->minor_ver);
}

/**
 * Bit masks for a MC I/O object (struct fsl_mc_io) flags
 */
#define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL	0x0001

/**
 * struct fsl_mc_io - MC I/O object to be passed-in to mc_send_command()
 * @dev: device associated with this Mc I/O object
 * @flags: flags for mc_send_command()
 * @portal_size: MC command portal size in bytes
 * @portal_phys_addr: MC command portal physical address
 * @portal_virt_addr: MC command portal virtual address
 * @dpmcp_dev: pointer to the DPMCP device associated with the MC portal.
 *
 * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not
 * set:
 * @mutex: Mutex to serialize mc_send_command() calls that use the same MC
 * portal, if the fsl_mc_io object was created with the
 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag off. mc_send_command() calls for this
 * fsl_mc_io object must be made only from non-atomic context.
 *
 * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is
 * set:
 * @spinlock: Spinlock to serialize mc_send_command() calls that use the same MC
 * portal, if the fsl_mc_io object was created with the
 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag on. mc_send_command() calls for this
 * fsl_mc_io object can be made from atomic or non-atomic context.
 */
struct fsl_mc_io {
	struct device *dev;
	u16 flags;
	u32 portal_size;
	phys_addr_t portal_phys_addr;
	void __iomem *portal_virt_addr;
	struct fsl_mc_device *dpmcp_dev;
	union {
		/*
		 * This field is only meaningful if the
		 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not set
		 */
		struct mutex mutex; /* serializes mc_send_command() */

		/*
		 * This field is only meaningful if the
		 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
		 */
		raw_spinlock_t spinlock; /* serializes mc_send_command() */
	};
};

int mc_send_command(struct fsl_mc_io *mc_io, struct fsl_mc_command *cmd);

#ifdef CONFIG_FSL_MC_BUS
#define dev_is_fsl_mc(_dev) ((_dev)->bus == &fsl_mc_bus_type)
#else
/* If fsl-mc bus is not present device cannot belong to fsl-mc bus */
#define dev_is_fsl_mc(_dev) (0)
#endif

/* Macro to check if a device is a container device */
#define fsl_mc_is_cont_dev(_dev) (to_fsl_mc_device(_dev)->flags & \
	FSL_MC_IS_DPRC)

/* Macro to get the container device of a MC device */
#define fsl_mc_cont_dev(_dev) (fsl_mc_is_cont_dev(_dev) ? \
	(_dev) : (_dev)->parent)

#define fsl_mc_is_dev_coherent(_dev) \
	(!((to_fsl_mc_device(_dev))->obj_desc.flags & \
	FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))

/*
 * module_fsl_mc_driver() - Helper macro for drivers that don't do
 * anything special in module init/exit.  This eliminates a lot of
 * boilerplate.  Each module may only use this macro once, and
 * calling it replaces module_init() and module_exit()
 */
#define module_fsl_mc_driver(__fsl_mc_driver) \
	module_driver(__fsl_mc_driver, fsl_mc_driver_register, \
		      fsl_mc_driver_unregister)

void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);

/*
 * Macro to avoid include chaining to get THIS_MODULE
 */
#define fsl_mc_driver_register(drv) \
	__fsl_mc_driver_register(drv, THIS_MODULE)

int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
					  struct module *owner);

void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);

/**
 * struct fsl_mc_version
 * @major: Major version number: incremented on API compatibility changes
 * @minor: Minor version number: incremented on API additions (that are
 *		backward compatible); reset when major version is incremented
 * @revision: Internal revision number: incremented on implementation changes
 *		and/or bug fixes that have no impact on API
 */
struct fsl_mc_version {
	u32 major;
	u32 minor;
	u32 revision;
};

struct fsl_mc_version *fsl_mc_get_version(void);

int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
					u16 mc_io_flags,
					struct fsl_mc_io **new_mc_io);

void fsl_mc_portal_free(struct fsl_mc_io *mc_io);

int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);

int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
					enum fsl_mc_pool_type pool_type,
					struct fsl_mc_device **new_mc_adev);

void fsl_mc_object_free(struct fsl_mc_device *mc_adev);

struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
						struct msi_domain_info *info,
						struct irq_domain *parent);

int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev);

void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev);

extern struct bus_type fsl_mc_bus_type;

extern struct device_type fsl_mc_bus_dprc_type;
extern struct device_type fsl_mc_bus_dpni_type;
extern struct device_type fsl_mc_bus_dpio_type;
extern struct device_type fsl_mc_bus_dpsw_type;
extern struct device_type fsl_mc_bus_dpdmux_type;
extern struct device_type fsl_mc_bus_dpbp_type;
extern struct device_type fsl_mc_bus_dpcon_type;
extern struct device_type fsl_mc_bus_dpmcp_type;
extern struct device_type fsl_mc_bus_dpmac_type;
extern struct device_type fsl_mc_bus_dprtc_type;
extern struct device_type fsl_mc_bus_dpseci_type;
extern struct device_type fsl_mc_bus_dpdcei_type;
extern struct device_type fsl_mc_bus_dpaiop_type;
extern struct device_type fsl_mc_bus_dpci_type;
extern struct device_type fsl_mc_bus_dpdmai_type;

static inline bool is_fsl_mc_bus_dprc(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dprc_type;
}

static inline bool is_fsl_mc_bus_dpni(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpni_type;
}

static inline bool is_fsl_mc_bus_dpio(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpio_type;
}

static inline bool is_fsl_mc_bus_dpsw(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpsw_type;
}

static inline bool is_fsl_mc_bus_dpdmux(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpdmux_type;
}

static inline bool is_fsl_mc_bus_dpbp(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpbp_type;
}

static inline bool is_fsl_mc_bus_dpcon(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpcon_type;
}

static inline bool is_fsl_mc_bus_dpmcp(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpmcp_type;
}

static inline bool is_fsl_mc_bus_dpmac(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpmac_type;
}

static inline bool is_fsl_mc_bus_dprtc(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dprtc_type;
}

static inline bool is_fsl_mc_bus_dpseci(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpseci_type;
}

static inline bool is_fsl_mc_bus_dpdcei(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpdcei_type;
}

static inline bool is_fsl_mc_bus_dpaiop(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpaiop_type;
}

static inline bool is_fsl_mc_bus_dpci(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpci_type;
}

static inline bool is_fsl_mc_bus_dpdmai(const struct fsl_mc_device *mc_dev)
{
	return mc_dev->dev.type == &fsl_mc_bus_dpdmai_type;
}

/*
 * 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
 */

int dpbp_open(struct fsl_mc_io *mc_io,
	      u32 cmd_flags,
	      int dpbp_id,
	      u16 *token);

int dpbp_close(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       u16 token);

int dpbp_enable(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token);

int dpbp_disable(struct fsl_mc_io *mc_io,
		 u32 cmd_flags,
		 u16 token);

int dpbp_reset(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       u16 token);

/**
 * struct dpbp_attr - Structure representing DPBP attributes
 * @id:		DPBP object ID
 * @bpid:	Hardware buffer pool ID; should be used as an argument in
 *		acquire/release operations on buffers
 */
struct dpbp_attr {
	int id;
	u16 bpid;
};

int dpbp_get_attributes(struct fsl_mc_io *mc_io,
			u32 cmd_flags,
			u16 token,
			struct dpbp_attr *attr);

/* Data Path Concentrator (DPCON) API
 * Contains initialization APIs and runtime control APIs for DPCON
 */

/**
 * Use it to disable notifications; see dpcon_set_notification()
 */
#define DPCON_INVALID_DPIO_ID		(int)(-1)

int dpcon_open(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       int dpcon_id,
	       u16 *token);

int dpcon_close(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token);

int dpcon_enable(struct fsl_mc_io *mc_io,
		 u32 cmd_flags,
		 u16 token);

int dpcon_disable(struct fsl_mc_io *mc_io,
		  u32 cmd_flags,
		  u16 token);

int dpcon_reset(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token);

/**
 * struct dpcon_attr - Structure representing DPCON attributes
 * @id: DPCON object ID
 * @qbman_ch_id: Channel ID to be used by dequeue operation
 * @num_priorities: Number of priorities for the DPCON channel (1-8)
 */
struct dpcon_attr {
	int id;
	u16 qbman_ch_id;
	u8 num_priorities;
};

int dpcon_get_attributes(struct fsl_mc_io *mc_io,
			 u32 cmd_flags,
			 u16 token,
			 struct dpcon_attr *attr);

/**
 * struct dpcon_notification_cfg - Structure representing notification params
 * @dpio_id:	DPIO object ID; must be configured with a notification channel;
 *	to disable notifications set it to 'DPCON_INVALID_DPIO_ID';
 * @priority:	Priority selection within the DPIO channel; valid values
 *		are 0-7, depending on the number of priorities in that channel
 * @user_ctx:	User context value provided with each CDAN message
 */
struct dpcon_notification_cfg {
	int dpio_id;
	u8 priority;
	u64 user_ctx;
};

int dpcon_set_notification(struct fsl_mc_io *mc_io,
			   u32 cmd_flags,
			   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 irq_enabled;
};

int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
		      const char *driver_override,
			  bool alloc_interrupts,
		      unsigned int *total_irq_count);

int __must_check fsl_create_mc_io(struct device *dev,
				  phys_addr_t mc_portal_phys_addr,
				  u32 mc_portal_size,
				  struct fsl_mc_device *dpmcp_dev,
				  u32 flags, struct fsl_mc_io **new_mc_io);

void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);

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_ */