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-rw-r--r--include/linux/soc/ti/ti_sci_protocol.h124
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 */