diff options
Diffstat (limited to 'drivers/staging/fsl-mc/bus/fsl-mc-private.h')
| -rw-r--r-- | drivers/staging/fsl-mc/bus/fsl-mc-private.h | 65 |
1 files changed, 63 insertions, 2 deletions
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-private.h b/drivers/staging/fsl-mc/bus/fsl-mc-private.h index 5c49c9d2df6a..62d398947605 100644 --- a/drivers/staging/fsl-mc/bus/fsl-mc-private.h +++ b/drivers/staging/fsl-mc/bus/fsl-mc-private.h @@ -11,9 +11,56 @@ #define _FSL_MC_PRIVATE_H_ #include "../include/mc.h" -#include "../include/mc-bus.h" +#include "dprc.h" +#include <linux/mutex.h> -int __must_check fsl_mc_device_add(struct dprc_obj_desc *obj_desc, +/** + * 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_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 + */ +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; +}; + +#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 fsl_mc_obj_desc *obj_desc, struct fsl_mc_io *mc_io, struct device *parent_dev, struct fsl_mc_device **new_mc_dev); @@ -28,6 +75,10 @@ int __init fsl_mc_allocator_driver_init(void); void fsl_mc_allocator_driver_exit(void); +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); + int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus, enum fsl_mc_pool_type pool_type, struct fsl_mc_resource @@ -44,6 +95,14 @@ int __init its_fsl_mc_msi_init(void); void its_fsl_mc_msi_cleanup(void); +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); + int __must_check fsl_create_mc_io(struct device *dev, phys_addr_t mc_portal_phys_addr, u32 mc_portal_size, @@ -52,4 +111,6 @@ int __must_check fsl_create_mc_io(struct device *dev, void fsl_destroy_mc_io(struct fsl_mc_io *mc_io); +bool fsl_mc_is_root_dprc(struct device *dev); + #endif /* _FSL_MC_PRIVATE_H_ */ |