diff options
Diffstat (limited to 'drivers/staging/fsl-mc/include/mc-private.h')
| -rw-r--r-- | drivers/staging/fsl-mc/include/mc-private.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/staging/fsl-mc/include/mc-private.h b/drivers/staging/fsl-mc/include/mc-private.h new file mode 100644 index 000000000000..c045f49f227e --- /dev/null +++ b/drivers/staging/fsl-mc/include/mc-private.h @@ -0,0 +1,116 @@ +/* + * Freescale Management Complex (MC) bus private declarations + * + * Copyright (C) 2014 Freescale Semiconductor, Inc. + * Author: German Rivera <German.Rivera@freescale.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#ifndef _FSL_MC_PRIVATE_H_ +#define _FSL_MC_PRIVATE_H_ + +#include "../include/mc.h" +#include <linux/mutex.h> +#include <linux/stringify.h> + +#define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc" + +#define FSL_MC_DEVICE_MATCH(_mc_dev, _obj_desc) \ + (strcmp((_mc_dev)->obj_desc.type, (_obj_desc)->type) == 0 && \ + (_mc_dev)->obj_desc.id == (_obj_desc)->id) + +#define FSL_MC_IS_ALLOCATABLE(_obj_type) \ + (strcmp(_obj_type, "dpbp") == 0 || \ + strcmp(_obj_type, "dpmcp") == 0 || \ + strcmp(_obj_type, "dpcon") == 0) + +/** + * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device + * @root_mc_bus_dev: MC object device representing the root DPRC + * @addr_translation_ranges: array of bus to system address translation ranges + */ +struct fsl_mc { + struct fsl_mc_device *root_mc_bus_dev; + uint8_t num_translation_ranges; + struct fsl_mc_addr_translation_range *translation_ranges; +}; + +/** + * struct fsl_mc_addr_translation_range - bus to system address translation + * range + * @start_mc_addr: Start MC address of the range being translated + * @end_mc_addr: MC address of the first byte after the range (last MC + * address of the range is end_mc_addr - 1) + * @start_phys_addr: system physical address corresponding to start_mc_addr + */ +struct fsl_mc_addr_translation_range { + uint64_t start_mc_addr; + uint64_t end_mc_addr; + phys_addr_t start_phys_addr; +}; + +/** + * 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; + int16_t max_count; + int16_t free_count; + struct mutex mutex; /* serializes access to free_list */ + struct list_head free_list; + struct fsl_mc_bus *mc_bus; +}; + +/** + * 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. + * @scan_mutex: Serializes bus scanning + */ +struct fsl_mc_bus { + struct fsl_mc_device mc_dev; + struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES]; + struct mutex scan_mutex; /* serializes bus scanning */ +}; + +#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 dprc_obj_desc *obj_desc, + struct fsl_mc_io *mc_io, + struct device *parent_dev, + struct fsl_mc_device **new_mc_dev); + +void fsl_mc_device_remove(struct fsl_mc_device *mc_dev); + +int dprc_scan_container(struct fsl_mc_device *mc_bus_dev); + +int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev); + +int __init dprc_driver_init(void); + +void __exit dprc_driver_exit(void); + +int __init fsl_mc_allocator_driver_init(void); + +void __exit fsl_mc_allocator_driver_exit(void); + +int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus, + enum fsl_mc_pool_type pool_type, + struct fsl_mc_resource + **new_resource); + +void fsl_mc_resource_free(struct fsl_mc_resource *resource); + +#endif /* _FSL_MC_PRIVATE_H_ */ |