include/linux/pruss_driver.h

Source file repositories/reference/linux-study-clean/include/linux/pruss_driver.h

File Facts

System
Linux kernel
Corpus path
include/linux/pruss_driver.h
Extension
.h
Size
4546 bytes
Lines
178
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pruss_mem_region {
	void __iomem *va;
	phys_addr_t pa;
	size_t size;
};

/**
 * struct pruss - PRUSS parent structure
 * @dev: pruss device pointer
 * @cfg_base: base iomap for CFG region
 * @cfg_regmap: regmap for config region
 * @mem_regions: data for each of the PRUSS memory regions
 * @mem_in_use: to indicate if memory resource is in use
 * @lock: mutex to serialize access to resources
 * @core_clk_mux: clk handle for PRUSS CORE_CLK_MUX
 * @iep_clk_mux: clk handle for PRUSS IEP_CLK_MUX
 */
struct pruss {
	struct device *dev;
	void __iomem *cfg_base;
	struct regmap *cfg_regmap;
	struct pruss_mem_region mem_regions[PRUSS_MEM_MAX];
	struct pruss_mem_region *mem_in_use[PRUSS_MEM_MAX];
	struct mutex lock; /* PRU resource lock */
	struct clk *core_clk_mux;
	struct clk *iep_clk_mux;
};

#if IS_ENABLED(CONFIG_TI_PRUSS)

struct pruss *pruss_get(struct rproc *rproc);
void pruss_put(struct pruss *pruss);
int pruss_request_mem_region(struct pruss *pruss, enum pruss_mem mem_id,
			     struct pruss_mem_region *region);
int pruss_release_mem_region(struct pruss *pruss,
			     struct pruss_mem_region *region);
int pruss_cfg_get_gpmux(struct pruss *pruss, enum pruss_pru_id pru_id, u8 *mux);
int pruss_cfg_set_gpmux(struct pruss *pruss, enum pruss_pru_id pru_id, u8 mux);
int pruss_cfg_gpimode(struct pruss *pruss, enum pruss_pru_id pru_id,
		      enum pruss_gpi_mode mode);
int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable);
int pruss_cfg_xfr_enable(struct pruss *pruss, enum pru_type pru_type,
			 bool enable);

#else

static inline struct pruss *pruss_get(struct rproc *rproc)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline void pruss_put(struct pruss *pruss) { }

static inline int pruss_request_mem_region(struct pruss *pruss,
					   enum pruss_mem mem_id,
					   struct pruss_mem_region *region)
{
	return -EOPNOTSUPP;
}

static inline int pruss_release_mem_region(struct pruss *pruss,
					   struct pruss_mem_region *region)
{
	return -EOPNOTSUPP;
}

static inline int pruss_cfg_get_gpmux(struct pruss *pruss,
				      enum pruss_pru_id pru_id, u8 *mux)
{
	return -EOPNOTSUPP;
}

static inline int pruss_cfg_set_gpmux(struct pruss *pruss,
				      enum pruss_pru_id pru_id, u8 mux)
{
	return -EOPNOTSUPP;
}

static inline int pruss_cfg_gpimode(struct pruss *pruss,
				    enum pruss_pru_id pru_id,
				    enum pruss_gpi_mode mode)
{
	return -EOPNOTSUPP;
}

static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
{
	return -EOPNOTSUPP;
}

Annotation

Implementation Notes