#ifndef __OF_RESERVED_MEM_H #define __OF_RESERVED_MEM_H #include <linux/device.h> struct of_phandle_args; struct reserved_mem_ops; struct reserved_mem { const char *name; unsigned long fdt_node; unsigned long phandle; const struct reserved_mem_ops *ops; phys_addr_t base; phys_addr_t size; void *priv; }; struct reserved_mem_ops { int (*device_init)(struct reserved_mem *rmem, struct device *dev); void (*device_release)(struct reserved_mem *rmem, struct device *dev); }; typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem); #define RESERVEDMEM_OF_DECLARE(name, compat, init) \ _OF_DECLARE(reservedmem, name, compat, init, reservedmem_of_init_fn) #ifdef CONFIG_OF_RESERVED_MEM int of_reserved_mem_device_init_by_idx(struct device *dev, struct device_node *np, int idx); void of_reserved_mem_device_release(struct device *dev); int early_init_dt_alloc_reserved_memory_arch(phys_addr_t size, phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap, phys_addr_t *res_base); void fdt_init_reserved_mem(void); void fdt_reserved_mem_save_node(unsigned long node, const char *uname, phys_addr_t base, phys_addr_t size); #else static inline int of_reserved_mem_device_init_by_idx(struct device *dev, struct device_node *np, int idx) { return -ENOSYS; } static inline void of_reserved_mem_device_release(struct device *pdev) { } static inline void fdt_init_reserved_mem(void) { } static inline void fdt_reserved_mem_save_node(unsigned long node, const char *uname, phys_addr_t base, phys_addr_t size) { } #endif /** * of_reserved_mem_device_init() - assign reserved memory region to given device * @dev: Pointer to the device to configure * * This function assigns respective DMA-mapping operations based on the first * reserved memory region specified by 'memory-region' property in device tree * node of the given device. * * Returns error code or zero on success. */ static inline int of_reserved_mem_device_init(struct device *dev) { return of_reserved_mem_device_init_by_idx(dev, dev->of_node, 0); } #endif /* __OF_RESERVED_MEM_H */