2 * Freescale Management Complex (MC) bus private declarations
4 * Copyright (C) 2014 Freescale Semiconductor, Inc.
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
11 #ifndef _FSL_MC_PRIVATE_H_
12 #define _FSL_MC_PRIVATE_H_
14 #include "../include/mc.h"
15 #include <linux/mutex.h>
16 #include <linux/stringify.h>
18 #define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc"
20 #define FSL_MC_DEVICE_MATCH(_mc_dev, _obj_desc) \
21 (strcmp((_mc_dev)->obj_desc.type, (_obj_desc)->type) == 0 && \
22 (_mc_dev)->obj_desc.id == (_obj_desc)->id)
24 #define FSL_MC_IS_ALLOCATABLE(_obj_type) \
25 (strcmp(_obj_type, "dpbp") == 0 || \
26 strcmp(_obj_type, "dpmcp") == 0 || \
27 strcmp(_obj_type, "dpcon") == 0)
30 struct msi_domain_info;
33 * Maximum number of total IRQs that can be pre-allocated for an MC bus'
36 #define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS 256
40 struct msi_domain_info;
43 * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
44 * @root_mc_bus_dev: MC object device representing the root DPRC
45 * @num_translation_ranges: number of entries in addr_translation_ranges
46 * @translation_ranges: array of bus to system address translation ranges
49 struct fsl_mc_device *root_mc_bus_dev;
50 u8 num_translation_ranges;
51 struct fsl_mc_addr_translation_range *translation_ranges;
55 * struct fsl_mc_addr_translation_range - bus to system address translation
57 * @mc_region_type: Type of MC region for the range being translated
58 * @start_mc_offset: Start MC offset of the range being translated
59 * @end_mc_offset: MC offset of the first byte after the range (last MC
60 * offset of the range is end_mc_offset - 1)
61 * @start_phys_addr: system physical address corresponding to start_mc_addr
63 struct fsl_mc_addr_translation_range {
64 enum dprc_region_type mc_region_type;
67 phys_addr_t start_phys_addr;
71 * struct fsl_mc_resource_pool - Pool of MC resources of a given
73 * @type: type of resources in the pool
74 * @max_count: maximum number of resources in the pool
75 * @free_count: number of free resources in the pool
76 * @mutex: mutex to serialize access to the pool's free list
77 * @free_list: anchor node of list of free resources in the pool
78 * @mc_bus: pointer to the MC bus that owns this resource pool
80 struct fsl_mc_resource_pool {
81 enum fsl_mc_pool_type type;
84 struct mutex mutex; /* serializes access to free_list */
85 struct list_head free_list;
86 struct fsl_mc_bus *mc_bus;
90 * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
91 * @mc_dev: fsl-mc device for the bus device itself.
92 * @resource_pools: array of resource pools (one pool per resource type)
93 * for this MC bus. These resources represent allocatable entities
94 * from the physical DPRC.
95 * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
96 * @scan_mutex: Serializes bus scanning
99 struct fsl_mc_device mc_dev;
100 struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
101 struct fsl_mc_device_irq *irq_resources;
102 struct mutex scan_mutex; /* serializes bus scanning */
105 #define to_fsl_mc_bus(_mc_dev) \
106 container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
108 int __must_check fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
109 struct fsl_mc_io *mc_io,
110 struct device *parent_dev,
111 struct fsl_mc_device **new_mc_dev);
113 void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
115 int dprc_scan_container(struct fsl_mc_device *mc_bus_dev);
117 int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
118 unsigned int *total_irq_count);
120 int __init dprc_driver_init(void);
122 void dprc_driver_exit(void);
124 int __init fsl_mc_allocator_driver_init(void);
126 void fsl_mc_allocator_driver_exit(void);
128 int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
129 enum fsl_mc_pool_type pool_type,
130 struct fsl_mc_resource
133 void fsl_mc_resource_free(struct fsl_mc_resource *resource);
135 struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
136 struct msi_domain_info *info,
137 struct irq_domain *parent);
139 int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
140 struct irq_domain **mc_msi_domain);
142 int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
143 unsigned int irq_count);
145 void fsl_mc_msi_domain_free_irqs(struct device *dev);
147 int __init its_fsl_mc_msi_init(void);
149 void its_fsl_mc_msi_cleanup(void);
151 int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
152 unsigned int irq_count);
154 void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
156 #endif /* _FSL_MC_PRIVATE_H_ */