117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* Freescale Management Complex (MC) bus private declarations
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*
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* Copyright (C) 2016 Freescale Semiconductor, Inc.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef _FSL_MC_PRIVATE_H_
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#define _FSL_MC_PRIVATE_H_
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#include "../include/mc.h"
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#include "dprc.h"
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#include <linux/mutex.h>
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/**
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* Maximum number of total IRQs that can be pre-allocated for an MC bus'
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* IRQ pool
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*/
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#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS 256
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/**
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* struct fsl_mc_resource_pool - Pool of MC resources of a given
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* type
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* @type: type of resources in the pool
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* @max_count: maximum number of resources in the pool
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* @free_count: number of free resources in the pool
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* @mutex: mutex to serialize access to the pool's free list
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* @free_list: anchor node of list of free resources in the pool
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* @mc_bus: pointer to the MC bus that owns this resource pool
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*/
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struct fsl_mc_resource_pool {
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enum fsl_mc_pool_type type;
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int max_count;
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int free_count;
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struct mutex mutex; /* serializes access to free_list */
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struct list_head free_list;
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struct fsl_mc_bus *mc_bus;
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};
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/**
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* struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
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* @mc_dev: fsl-mc device for the bus device itself.
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* @resource_pools: array of resource pools (one pool per resource type)
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* for this MC bus. These resources represent allocatable entities
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* from the physical DPRC.
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* @irq_resources: Pointer to array of IRQ objects for the IRQ pool
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* @scan_mutex: Serializes bus scanning
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* @dprc_attr: DPRC attributes
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*/
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struct fsl_mc_bus {
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struct fsl_mc_device mc_dev;
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struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
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struct fsl_mc_device_irq *irq_resources;
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struct mutex scan_mutex; /* serializes bus scanning */
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struct dprc_attributes dprc_attr;
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};
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#define to_fsl_mc_bus(_mc_dev) \
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container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
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int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
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struct fsl_mc_io *mc_io,
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struct device *parent_dev,
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struct fsl_mc_device **new_mc_dev);
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void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
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int __init dprc_driver_init(void);
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void dprc_driver_exit(void);
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int __init fsl_mc_allocator_driver_init(void);
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void fsl_mc_allocator_driver_exit(void);
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void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
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void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
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int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
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enum fsl_mc_pool_type pool_type,
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struct fsl_mc_resource
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**new_resource);
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void fsl_mc_resource_free(struct fsl_mc_resource *resource);
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int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
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unsigned int irq_count);
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void fsl_mc_msi_domain_free_irqs(struct device *dev);
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int __init its_fsl_mc_msi_init(void);
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void its_fsl_mc_msi_cleanup(void);
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int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
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struct irq_domain **mc_msi_domain);
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int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
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unsigned int irq_count);
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void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
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int __must_check fsl_create_mc_io(struct device *dev,
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phys_addr_t mc_portal_phys_addr,
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u32 mc_portal_size,
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struct fsl_mc_device *dpmcp_dev,
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u32 flags, struct fsl_mc_io **new_mc_io);
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void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
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bool fsl_mc_is_root_dprc(struct device *dev);
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#endif /* _FSL_MC_PRIVATE_H_ */
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