diff options
Diffstat (limited to 'include/linux/soc/ti/ti_sci_protocol.h')
| -rw-r--r-- | include/linux/soc/ti/ti_sci_protocol.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h index 18435e5c6364..568722a041bf 100644 --- a/include/linux/soc/ti/ti_sci_protocol.h +++ b/include/linux/soc/ti/ti_sci_protocol.h @@ -193,14 +193,67 @@ struct ti_sci_clk_ops { }; /** + * struct ti_sci_rm_core_ops - Resource management core operations + * @get_range: Get a range of resources belonging to ti sci host. + * @get_rage_from_shost: Get a range of resources belonging to + * specified host id. + * - s_host: Host processing entity to which the + * resources are allocated + * + * NOTE: for these functions, all the parameters are consolidated and defined + * as below: + * - handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle + * - dev_id: TISCI device ID. + * - subtype: Resource assignment subtype that is being requested + * from the given device. + * - range_start: Start index of the resource range + * - range_end: Number of resources in the range + */ +struct ti_sci_rm_core_ops { + int (*get_range)(const struct ti_sci_handle *handle, u32 dev_id, + u8 subtype, u16 *range_start, u16 *range_num); + int (*get_range_from_shost)(const struct ti_sci_handle *handle, + u32 dev_id, u8 subtype, u8 s_host, + u16 *range_start, u16 *range_num); +}; + +/** + * struct ti_sci_rm_irq_ops: IRQ management operations + * @set_irq: Set an IRQ route between the requested source + * and destination + * @set_event_map: Set an Event based peripheral irq to Interrupt + * Aggregator. + * @free_irq: Free an an IRQ route between the requested source + * destination. + * @free_event_map: Free an event based peripheral irq to Interrupt + * Aggregator. + */ +struct ti_sci_rm_irq_ops { + int (*set_irq)(const struct ti_sci_handle *handle, u16 src_id, + u16 src_index, u16 dst_id, u16 dst_host_irq); + int (*set_event_map)(const struct ti_sci_handle *handle, u16 src_id, + u16 src_index, u16 ia_id, u16 vint, + u16 global_event, u8 vint_status_bit); + int (*free_irq)(const struct ti_sci_handle *handle, u16 src_id, + u16 src_index, u16 dst_id, u16 dst_host_irq); + int (*free_event_map)(const struct ti_sci_handle *handle, u16 src_id, + u16 src_index, u16 ia_id, u16 vint, + u16 global_event, u8 vint_status_bit); +}; + +/** * struct ti_sci_ops - Function support for TI SCI * @dev_ops: Device specific operations * @clk_ops: Clock specific operations + * @rm_core_ops: Resource management core operations. + * @rm_irq_ops: IRQ management specific operations */ struct ti_sci_ops { struct ti_sci_core_ops core_ops; struct ti_sci_dev_ops dev_ops; struct ti_sci_clk_ops clk_ops; + struct ti_sci_rm_core_ops rm_core_ops; + struct ti_sci_rm_irq_ops rm_irq_ops; }; /** @@ -213,10 +266,47 @@ struct ti_sci_handle { struct ti_sci_ops ops; }; +#define TI_SCI_RESOURCE_NULL 0xffff + +/** + * struct ti_sci_resource_desc - Description of TI SCI resource instance range. + * @start: Start index of the resource. + * @num: Number of resources. + * @res_map: Bitmap to manage the allocation of these resources. + */ +struct ti_sci_resource_desc { + u16 start; + u16 num; + unsigned long *res_map; +}; + +/** + * struct ti_sci_resource - Structure representing a resource assigned + * to a device. + * @sets: Number of sets available from this resource type + * @lock: Lock to guard the res map in each set. + * @desc: Array of resource descriptors. + */ +struct ti_sci_resource { + u16 sets; + raw_spinlock_t lock; + struct ti_sci_resource_desc *desc; +}; + #if IS_ENABLED(CONFIG_TI_SCI_PROTOCOL) const struct ti_sci_handle *ti_sci_get_handle(struct device *dev); int ti_sci_put_handle(const struct ti_sci_handle *handle); const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev); +const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np, + const char *property); +const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev, + const char *property); +u16 ti_sci_get_free_resource(struct ti_sci_resource *res); +void ti_sci_release_resource(struct ti_sci_resource *res, u16 id); +u32 ti_sci_get_num_resources(struct ti_sci_resource *res); +struct ti_sci_resource * +devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle, + struct device *dev, u32 dev_id, char *of_prop); #else /* CONFIG_TI_SCI_PROTOCOL */ @@ -236,6 +326,40 @@ const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev) return ERR_PTR(-EINVAL); } +static inline +const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np, + const char *property) +{ + return ERR_PTR(-EINVAL); +} + +static inline +const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev, + const char *property) +{ + return ERR_PTR(-EINVAL); +} + +static inline u16 ti_sci_get_free_resource(struct ti_sci_resource *res) +{ + return TI_SCI_RESOURCE_NULL; +} + +static inline void ti_sci_release_resource(struct ti_sci_resource *res, u16 id) +{ +} + +static inline u32 ti_sci_get_num_resources(struct ti_sci_resource *res) +{ + return 0; +} + +static inline struct ti_sci_resource * +devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle, + struct device *dev, u32 dev_id, char *of_prop) +{ + return ERR_PTR(-EINVAL); +} #endif /* CONFIG_TI_SCI_PROTOCOL */ #endif /* __TISCI_PROTOCOL_H */ |