v4.19.13 snapshot.
diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h
new file mode 100644
index 0000000..f27cb14
--- /dev/null
+++ b/include/linux/fsl/mc.h
@@ -0,0 +1,562 @@
+/* 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>
+
+#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)
+
+/**
+ * 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.
+ *
+ * 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;
+ u16 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;
+};
+
+#define to_fsl_mc_device(_dev) \
+ container_of(_dev, struct fsl_mc_device, dev)
+
+#define MC_CMD_NUM_OF_PARAMS 7
+
+struct mc_cmd_header {
+ u8 src_id;
+ u8 flags_hw;
+ u8 status;
+ u8 flags_sw;
+ __le16 token;
+ __le16 cmd_id;
+};
+
+struct fsl_mc_command {
+ u64 header;
+ u64 params[MC_CMD_NUM_OF_PARAMS];
+};
+
+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 u64 mc_encode_cmd_header(u16 cmd_id,
+ u32 cmd_flags,
+ u16 token)
+{
+ u64 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
+ */
+ 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
+
+/*
+ * 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)
+
+/*
+ * 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);
+
+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_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;
+
+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_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;
+}
+
+/*
+ * 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);
+
+#endif /* _FSL_MC_H_ */