drivers/net/wireless/iwlwifi/iwl-bus.h

/******************************************************************************
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 * in the file called LICENSE.GPL.
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 *  Intel Linux Wireless <ilw@linux.intel.com>
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#ifndef __iwl_pci_h__
#define __iwl_pci_h__

struct iwl_bus;

/**
 * struct iwl_bus_ops - bus specific operations

 * @get_pm_support: must returns true if the bus can go to sleep
 * @apm_config: will be called during the config of the APM configuration
 * @set_drv_data: set the priv pointer to the bus layer
 * @get_hw_id: prints the hw_id in the provided buffer
 * @write8: write a byte to register at offset ofs
 * @write32: write a dword to register at offset ofs
 * @wread32: read a dword at register at offset ofs
 */
struct iwl_bus_ops {
	bool (*get_pm_support)(struct iwl_bus *bus);
	void (*apm_config)(struct iwl_bus *bus);
	void (*set_drv_data)(struct iwl_bus *bus, void *drv_data);
	void (*get_hw_id)(struct iwl_bus *bus, char buf[], int buf_len);
	void (*write8)(struct iwl_bus *bus, u32 ofs, u8 val);
	void (*write32)(struct iwl_bus *bus, u32 ofs, u32 val);
	u32 (*read32)(struct iwl_bus *bus, u32 ofs);
};

struct iwl_bus {
	/* Common data to all buses */

	/*TODO: priv should be void * */
	struct iwl_priv *priv; /* driver's context */
	struct device *dev;
	struct iwl_bus_ops *ops;

	unsigned int irq;

	/* pointer to bus specific struct */
	/*Ensure that this pointer will always be aligned to sizeof pointer */
	char bus_specific[0] __attribute__((__aligned__(sizeof(void *))));
};

static inline bool bus_get_pm_support(struct iwl_bus *bus)
{
	return bus->ops->get_pm_support(bus);
}

static inline void bus_apm_config(struct iwl_bus *bus)
{
	bus->ops->apm_config(bus);
}

static inline void bus_set_drv_data(struct iwl_bus *bus, void *drv_data)
{
	bus->ops->set_drv_data(bus, drv_data);
}

static inline void bus_get_hw_id(struct iwl_bus *bus, char buf[], int buf_len)
{
	bus->ops->get_hw_id(bus, buf, buf_len);
}

static inline void bus_write8(struct iwl_bus *bus, u32 ofs, u8 val)
{
	bus->ops->write8(bus, ofs, val);
}

static inline void bus_write32(struct iwl_bus *bus, u32 ofs, u32 val)
{
	bus->ops->write32(bus, ofs, val);
}

static inline u32 bus_read32(struct iwl_bus *bus, u32 ofs)
{
	return bus->ops->read32(bus, ofs);
}

int __must_check iwl_pci_register_driver(void);
void iwl_pci_unregister_driver(void);

#endif