Bus Resource Functions

struct bhnd_resource *
bhnd_alloc_resource(device_t dev, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags);

struct bhnd_resource *
bhnd_alloc_resource_any(device_t dev, int type, int *rid, u_int flags);

int
bhnd_alloc_resources(device_t dev, struct resource_spec *rs, struct bhnd_resource **res);

int
bhnd_deactivate_resource(device_t dev, int type, int rid, struct bhnd_resource *r);

int
bhnd_release_resource(device_t dev, int type, int rid, struct bhnd_resource *r);

void
bhnd_release_resources(device_t dev, const struct resource_spec *rs, struct bhnd_resource **res);

Bus Space Functions

uint8_t
bhnd_bus_read_1(struct bhnd_resource *r, bus_size_t offset);

uint16_t
bhnd_bus_read_2(struct bhnd_resource *r, bus_size_t offset);

uint32_t
bhnd_bus_read_4(struct bhnd_resource *r, bus_size_t offset);

void
bhnd_bus_read_multi_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_read_multi_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_read_multi_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_read_multi_stream_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_read_multi_stream_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_read_multi_stream_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_read_region_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_read_region_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_read_region_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_read_region_stream_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_read_region_stream_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_read_region_stream_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_read_stream_1(struct bhnd_resource *r, bus_size_t offset);

void
bhnd_bus_read_stream_2(struct bhnd_resource *r, bus_size_t offset);

uint32_t
bhnd_bus_read_stream_4(struct bhnd_resource *r, bus_size_t offset);

void
bhnd_bus_set_multi_1(struct bhnd_resource *r, bus_size_t offset, uint8_t value, bus_size_t count);

void
bhnd_bus_set_multi_2(struct bhnd_resource *r, bus_size_t offset, uint16_t value, bus_size_t count);

void
bhnd_bus_set_multi_4(struct bhnd_resource *r, bus_size_t offset, uint32_t value, bus_size_t count);

void
bhnd_bus_set_region_1(struct bhnd_resource *r, bus_size_t offset, uint8_t value, bus_size_t count);

void
bhnd_bus_set_region_2(struct bhnd_resource *r, bus_size_t offset, uint16_t value, bus_size_t count);

void
bhnd_bus_set_region_4(struct bhnd_resource *r, bus_size_t offset, uint32_t value, bus_size_t count);

void
bhnd_bus_write_1(struct bhnd_resource *r, uint8_t value);

void
bhnd_bus_write_2(struct bhnd_resource *r, uint16_t value);

void
bhnd_bus_write_4(struct bhnd_resource *r, uint32_t value);

void
bhnd_bus_write_multi_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_write_multi_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_write_multi_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_write_multi_stream_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_write_multi_stream_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_write_multi_stream_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_write_region_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_write_region_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_write_region_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_write_region_stream_1(struct bhnd_resource *r, bus_size_t offset, uint8_t *datap, bus_size_t count);

void
bhnd_bus_write_region_stream_2(struct bhnd_resource *r, bus_size_t offset, uint16_t *datap, bus_size_t count);

void
bhnd_bus_write_region_stream_4(struct bhnd_resource *r, bus_size_t offset, uint32_t *datap, bus_size_t count);

void
bhnd_bus_write_stream_1(struct bhnd_resource *r, uint8_t value);

void
bhnd_bus_write_stream_2(struct bhnd_resource *r, uint16_t value);

void
bhnd_bus_write_stream_4(struct bhnd_resource *r, uint32_t value);

Device Configuration Functions

int
bhnd_write_ioctl(device_t dev, uint16_t value, uint16_t mask);

int
bhnd_read_iost(device_t dev, uint16_t *iost);

uint32_t
bhnd_read_config(device_t dev, bus_size_t offset, void *value, u_int width);

int
bhnd_write_config(device_t dev, bus_size_t offset, const void *value, u_int width);

int
bhnd_reset_hw(device_t dev, uint16_t ioctl, uint16_t reset_ioctl);

int
bhnd_suspend_hw(device_t dev, uint16_t ioctl);

bool
bhnd_is_hw_suspended(device_t dev);

Device Information Functions

const struct bhnd_chipid *
bhnd_get_chipid(device_t dev);

bhnd_devclass_t
bhnd_get_class(device_t dev);

u_int
bhnd_get_core_index(device_t dev);

struct bhnd_core_info
bhnd_get_core_info(device_t dev);

int
bhnd_get_core_unit(device_t dev);

uint16_t
bhnd_get_device(device_t dev);

const char *
bhnd_get_device_name(device_t dev);

uint8_t
bhnd_get_hwrev(device_t dev);

uint16_t
bhnd_get_vendor(device_t dev);

const char *
bhnd_get_vendor_name(device_t dev);

int
bhnd_read_board_info(device_t dev, struct bhnd_board_info *info);

Device Matching Functions

device_t
bhnd_bus_match_child(device_t bus, const struct bhnd_core_match *desc);

bool
bhnd_chip_matches(const struct bhnd_chipid *chip, const struct bhnd_chip_match *desc);

struct bhnd_core_match
bhnd_core_get_match_desc(const struct bhnd_core_info *core);

bool
bhnd_core_matches(const struct bhnd_core_info *core, const struct bhnd_core_match *desc);

bool
bhnd_cores_equal(const struct bhnd_core_info *lhs, const struct bhnd_core_info *rhs);

bool
bhnd_hwrev_matches(uint16_t hwrev, const struct bhnd_hwrev_match *desc);

const struct bhnd_core_info *
bhnd_match_core(const struct bhnd_core_info *cores, u_int num_cores, const struct bhnd_core_match *desc);

Device Table Functions

bool
bhnd_device_matches(device_t dev, const struct bhnd_device_match *desc);

uint32_t
bhnd_device_quirks(device_t dev, const struct bhnd_device *table, size_t entry_size);

BHND_BOARD_QUIRK(board, flags);

BHND_CHIP_QUIRK(chip, hwrev, flags);

BHND_CORE_QUIRK(hwrev, flags);

BHND_DEVICE(vendor, device, desc, quirks, ...);

BHND_DEVICE_IS_END(struct bhnd_device *d);

BHND_DEVICE_QUIRK_IS_END(struct bhnd_device_quirk *q);

BHND_PKG_QUIRK(chip, pkg, flags);

struct bhnd_device_quirk {
	struct bhnd_device_match	desc;
	uint32_t			quirks;
};

struct bhnd_device {
    const struct bhnd_device_match	 core;
    const char				*desc;
    const struct bhnd_device_quirk	*quirks_table;
    uint32_t				 device_flags;
};

enum {
	BHND_DF_ANY	= 0,
	BHND_DF_HOSTB	= (1 << 0),
	BHND_DF_SOC	= (1 << 1),
	BHND_DF_ADAPTER	= (1 << 2)
};

#define BHND_DEVICE_END { { BHND_MATCH_ANY }, NULL, NULL, 0 }

#define BHND_DEVICE_QUIRK_END { { BHND_MATCH_ANY }, 0 }

DMA Address Translation Functions

struct bhnd_dma_translation {
	bhnd_addr_t	base_addr;
	bhnd_addr_t	addr_mask;
	bhnd_addr_t	addrext_mask;
	uint32_t	flags;
};

typedef enum {
	BHND_DMA_ADDR_30BIT	= 30,
	BHND_DMA_ADDR_32BIT	= 32,
	BHND_DMA_ADDR_64BIT	= 64
} bhnd_dma_addrwidth;

enum bhnd_dma_translation_flags {
	BHND_DMA_TRANSLATION_PHYSMAP		= (1<<0),
	BHND_DMA_TRANSLATION_BYTESWAPPED	= (1<<1)
};

Interrupt Functions

int
bhnd_get_intr_ivec(device_t dev, u_int intr, u_int *ivec);

int
bhnd_map_intr(device_t dev, u_int intr, rman_res_t *irq);

void
bhnd_unmap_intr(device_t dev, rman_res_t irq);

NVRAM Functions

int
bhnd_nvram_getvar_array(device_t dev, const char *name, void *buf, size_t size, bhnd_nvram_type type);

int
bhnd_nvram_getvar_int(device_t dev, const char *name, void *value, int width);

int
bhnd_nvram_getvar_int8(device_t dev, const char *name, int8_t *value);

int
bhnd_nvram_getvar_int16(device_t dev, const char *name, int16_t *value);

int
bhnd_nvram_getvar_int32(device_t dev, const char *name, int32_t *value);

int
bhnd_nvram_getvar_uint(device_t dev, const char *name, void *value, int width);

int
bhnd_nvram_getvar_uint8(device_t dev, const char *name, uint8_t *value);

int
bhnd_nvram_getvar_uint16(device_t dev, const char *name, uint16_t *value);

int
bhnd_nvram_getvar_uint32(device_t dev, const char *name, uint32_t *value);

int
bhnd_nvram_getvar_str(device_t dev, const char *name, char *buf, size_t len, size_t *rlen);

const char *
bhnd_nvram_string_array_next(const char *inp, size_t ilen, const char *prev, size_t *olen);

typedef enum {
	BHND_NVRAM_TYPE_UINT8		= 0,
	BHND_NVRAM_TYPE_UINT16		= 1,
	BHND_NVRAM_TYPE_UINT32		= 2,
	BHND_NVRAM_TYPE_UINT64		= 3,
	BHND_NVRAM_TYPE_INT8		= 4,
	BHND_NVRAM_TYPE_INT16		= 5,
	BHND_NVRAM_TYPE_INT32		= 6,
	BHND_NVRAM_TYPE_INT64		= 7,
	BHND_NVRAM_TYPE_CHAR		= 8,
	BHND_NVRAM_TYPE_STRING		= 9,
	BHND_NVRAM_TYPE_BOOL		= 10,
	BHND_NVRAM_TYPE_NULL		= 11,
	BHND_NVRAM_TYPE_DATA		= 12
	BHND_NVRAM_TYPE_UINT8_ARRAY	= 16,
	BHND_NVRAM_TYPE_UINT16_ARRAY	= 17,
	BHND_NVRAM_TYPE_UINT32_ARRAY	= 18,
	BHND_NVRAM_TYPE_UINT64_ARRAY	= 19,
	BHND_NVRAM_TYPE_INT8_ARRAY	= 20,
	BHND_NVRAM_TYPE_INT16_ARRAY	= 21,
	BHND_NVRAM_TYPE_INT32_ARRAY	= 22,
	BHND_NVRAM_TYPE_INT64_ARRAY	= 23,
	BHND_NVRAM_TYPE_CHAR_ARRAY	= 24,
	BHND_NVRAM_TYPE_STRING_ARRAY	= 25,
	BHND_NVRAM_TYPE_BOOL_ARRAY	= 26
} bhnd_nvram_type;

Port/Region Functions

u_int
bhnd_get_port_count(device_t dev, bhnd_port_type type);

int
bhnd_get_port_rid(device_t dev, bhnd_port_type type, u_int port, u_int region);

int
bhnd_get_region_addr(device_t dev, bhnd_port_type port_type, u_int port, u_int region, bhnd_addr_t *region_addr, bhnd_size_t *region_size);

u_int
bhnd_get_region_count(device_t dev, bhnd_port_type type, u_int port);

bool
bhnd_is_region_valid(device_t dev, bhnd_port_type type, u_int port, u_int region);

typedef enum {
	BHND_PORT_DEVICE	= 0,
	BHND_PORT_BRIDGE	= 1,
	BHND_PORT_AGENT		= 2
} bhnd_port_type;

Power Management Functions

int
bhnd_release_pmu(device_t dev);

int
bhnd_enable_clocks(device_t dev, uint32_t clocks);

int
bhnd_request_clock(device_t dev, bhnd_clock clock);

int
bhnd_get_clock_freq(device_t dev, bhnd_clock clock, u_int *freq);

int
bhnd_get_clock_latency(device_t dev, bhnd_clock clock, u_int *latency);

int
bhnd_request_ext_rsrc(device_t dev, u_int rsrc);

int
bhnd_release_ext_rsrc(device_t dev, u_int rsrc);

typedef enum {
	BHND_CLOCK_DYN	= (1 << 0),
	BHND_CLOCK_ILP	= (1 << 1),
	BHND_CLOCK_ALP	= (1 << 2),
	BHND_CLOCK_HT	= (1 << 3)
} bhnd_clock;

Service Provider Functions

int
bhnd_deregister_provider(device_t dev, bhnd_service_t service);

device_t
bhnd_retain_provider(device_t dev, bhnd_service_t service);

void
bhnd_release_provider(device_t dev, device_t provider, bhnd_service_t service);

typedef enum {
	BHND_SERVICE_CHIPC,
	BHND_SERVICE_PWRCTL,
	BHND_SERVICE_PMU,
	BHND_SERVICE_NVRAM,
	BHND_SERVICE_GPIO,
	BHND_SERVICE_ANY	= 1000
} bhnd_service_t;

Utility Functions

bhnd_devclass_t
bhnd_find_core_class(uint16_t vendor, uint16_t device);

const char *
bhnd_find_core_name(uint16_t vendor, uint16_t device);

bhnd_devclass_t
bhnd_core_class(const struct bhnd_core_info *ci);

const char *
bhnd_core_name(const struct bhnd_core_info *ci);

int
bhnd_format_chip_id(char *buffer, size_t size, uint16_t chip_id);

void
bhnd_set_custom_core_desc(device_t dev, const char *dev_name);

void
bhnd_set_default_core_desc(device_t dev);

const char *
bhnd_vendor_name(uint16_t vendor);

#define	BHND_CHIPID_MAX_NAMELEN	32

Bus Resource Functions

These functions are primarily used in the implementation of BHND platform device drivers that, on host-connected peripherals, must share a small set of register windows during initial setup and teardown.

BHND peripherals are designed to not require register window remapping during normal operation, and most drivers may safely use the standard struct resource APIs directly.

The bhnd_activate_resource() function activates a previously allocated resource.

The arguments are as follows:

dev

The device holding ownership of the allocated resource.

type

The type of the resource.

rid

The bus-specific handle that identifies the resource being activated.

r

A pointer to the resource returned by bhnd_alloc_resource().

The bhnd_alloc_resource() function allocates a resource from a device's parent bhnd(4) bus.

The arguments are as follows:

dev

The device requesting resource ownership.

type

The type of resource to allocate. This may be any type supported by the standard bus_alloc_resource(9) function.

rid

The bus-specific handle identifying the resource being allocated.

start

The start address of the resource.

end

The end address of the resource.

count

The size of the resource.

flags

The flags for the resource to be allocated. These may be any values supported by the standard bus_alloc_resource(9) function.

To request that the bus supply the resource's default start, end, and count values, pass start and end values of 0ul and ~0ul respectively, and a count of 1.

The bhnd_alloc_resource_any() function is a convenience wrapper for bhnd_alloc_resource(), using the resource's default start, end, and count values.

The arguments are as follows:

dev

The device requesting resource ownership.

type

The type of resource to allocate. This may be any type supported by the standard bus_alloc_resource(9) function.

rid

The bus-specific handle identifying the resource being allocated.

flags

The flags for the resource to be allocated. These may be any values supported by the standard bus_alloc_resource(9) function.

The bhnd_alloc_resources() function allocates resources defined in resource specification from a device's parent bhnd(4) bus.

The arguments are as follows:

dev

The device requesting ownership of the resources.

rs

A standard bus resource specification. If all requested resources, are successfully allocated, this will be updated with the allocated resource identifiers.

res

If all requested resources are successfully allocated, this will be populated with the allocated struct bhnd_resource instances.

The bhnd_deactivate_resource() function deactivates a resource previously activated by. bhnd_activate_resource(). The arguments are as follows:

dev

The device holding ownership of the activated resource.

type

The type of the resource.

rid

The bus-specific handle identifying the resource.

r

A pointer to the resource returned by bhnd_alloc_resource.

The bhnd_release_resource() function frees a resource previously returned by bhnd_alloc_resource(). The arguments are as follows:

dev

The device holding ownership of the resource.

type

The type of the resource.

rid

The bus-specific handle identifying the resource.

r

A pointer to the resource returned by bhnd_alloc_resource.

The bhnd_release_resources() function frees resources previously returned by bhnd_alloc_resources(). The arguments are as follows:

dev

The device that owns the resources.

rs

A standard bus resource specification previously initialized by bhnd_alloc_resources().

res

The resources to be released.

The bhnd_resource structure contains the following fields:

res

A pointer to the bus struct resource.

direct

If true, the resource requires bus window remapping before it is MMIO accessible.

Bus Space Functions

bhnd_bus_barrier()

bhnd_bus_[read|write]_[1|2|4]()

bhnd_bus_[read_multi|write_multi]_[1|2|4]()

bhnd_bus_[read_multi_stream|write_multi_stream]_[1|2|4]()

bhnd_bus_[read_region|write_region]_[1|2|4]()

bhnd_bus_[read_region_stream|write_region_stream]_[1|2|4]()

bhnd_bus_[read_stream|write_stream]_[1|2|4]()

bhnd_bus_[set_multi|set_stream]_[1|2|4]()

Drivers that do not rely on struct bhnd_resource should use the standard struct resource and bus_space(9) APIs directly.

Device Configuration Functions

The bhnd_write_ioctl() function is used to modify the I/O control register of dev. The new value of the register is computed by updating any bits set in mask to value. The following I/O control flags are supported:

The bhnd_read_iost() function is used to read the I/O status register of device dev, returning the current value in iost. The following I/O status flags are supported:

The bhnd_read_config() function is used to read a data item of width bytes at offset from the backplane-specific agent/config space of the device dev.

The bhnd_write_config() function is used to write a data item of width bytes with value at offset from the backplane-specific agent/config space of the device dev. The requested width must be one of 1, 2, or 4 bytes.

The agent/config space accessible via bhnd_read_config() and bhnd_write_config() is backplane-specific, and these functions should only be used for functionality that is not available via another bhnd function.

The bhnd_suspend_hw() function transitions the device dev to a low power “RESET” state, writing ioctl to the I/O control flags of dev. The hardware may be brought out of this state using bhnd_reset_hw().

The bhnd_reset_hw() function first transitions the device dev to a low power RESET state, writing ioctl_reset to the I/O control flags of dev, and then brings the device out of RESET, writing ioctl to the device's I/O control flags.

The bhnd_is_hw_suspended() function returns true if the device dev is currently held in a RESET state, or is otherwise not clocked. Otherwise, it returns false.

Any outstanding per-device PMU requests made using bhnd_enable_clocks(), bhnd_request_clock(), or bhnd_request_ext_rsrc() will be released automatically upon placing a device into a RESET state.

Device Information Functions

The following attachment types are supported:

BHND_ATTACH_ADAPTER

The bus is resident on a bridged adapter, such as a PCI Wi-Fi device.

BHND_ATTACH_NATIVE

The bus is resident on the native host, such as the primary or secondary bus of an embedded SoC.

The bhnd_get_chipid() function returns chip information from the parent bhnd(4) bus of device dev. The returned bhnd_chipid struct contains the following fields:

The following constants are defined for known chip_type values:

The following chip_caps flags are supported:

Additional symbolic constants for known chip_id, chip_pkg, and chip_type values are defined in <dev/bhnd/bhnd_ids.h>.

The bhnd_get_class() function returns the BHND class of device dev, if the device's vendor and device identifiers are recognized. Otherwise, returns BHND_DEVCLASS_OTHER.

One of the following device classes will be returned:

The bhnd_get_core_info() function returns the core information for device dev. The returned bhnd_core_info structure contains the following fields:

Symbolic constants for common vendor and device identifiers are defined in <dev/bhnd/bhnd_ids.h>. Common vendor identifiers include:

The bhnd_get_core_index(), bhnd_get_core_unit(), bhnd_get_device(), bhnd_get_hwrev(), and bhnd_get_vendor() functions are convenience wrappers for bhnd_get_core_info(), returning, respect the core_idx, core_unit, device, hwrev, or vendor field from the bhnd_core_info structure.

The bhnd_get_device_name() function returns a human readable name for device dev.

The bhnd_get_vendor_name() function returns a human readable name for the vendor of device dev.

The bhnd_read_board_info() function attempts to read the board information for device dev. The board information will be returned in the location pointed to by info on success.

The bhnd_board_info structure contains the following fields:

The board_devid field is the Broadcom PCI device ID that most closely matches the capabilities of the BHND device (if any).

On PCI devices, the board_vendor, board_type, and board_devid fields default to the PCI Subsystem Vendor ID, PCI Subsystem ID, and PCI device ID, unless overridden in device NVRAM.

On other devices, including SoCs, the board_vendor, board_type, and board_devid fields will be populated from device NVRAM.

Symbolic constants for common board flags are defined in <dev/bhnd/bhnd_ids.h>.

Device Matching Functions

The bhnd_board_matches() function returns true if board matches the board match descriptor desc. Otherwise, it returns false.

The bhnd_chip_matches() function returns true if chip matches the chip match descriptor desc. Otherwise, it returns false.

The bhnd_core_matches() function returns true if core matches the core match descriptor desc. Otherwise, it returns false.

The bhnd_device_matches() function returns true if the device dev matches the device match descriptor desc. Otherwise, it returns false.

The bhnd_hwrev_matches() function returns true if hwrev matches the hwrev match descriptor desc. Otherwise, it returns false.

The bhnd_bus_match_child() function returns the first child device of bus that matches the device match descriptor desc. If no matching child is found, NULL is returned.

The bhnd_core_get_match_desc() function returns an equality match descriptor for the core info in core. The returned descriptor will match only on core attributes identical to those defined by core.

The bhnd_cores_equal() function is a convenience wrapper for bhnd_core_matches() and bhnd_core_get_match_desc(). This function returns true if the bhnd_core_info structures lhs and rhs are equal. Otherwise, it returns false.

The bhnd_match_core() function returns a pointer to the first entry in the array cores of length num_cores that matches desc. If no matching core is found, NULL is returned.

A bhnd_board_match match descriptor may be initialized using one or more of the following macros:

For example:

struct bhnd_board_match board_desc = {
	BHND_MATCH_BOARD_VENDOR(BHND_MFGID_BROADCOM),
	BHND_MATCH_BOARD_TYPE(BCM94360X52C),
	BHND_MATCH_BOARD_REV(HWREV_ANY),
	BHND_MATCH_SROMREV(RANGE(0, 10))
};

A bhnd_chip_match match descriptor may be initialized using one or more of the following macros:

For example:

struct bhnd_chip_match chip_desc = {
	BHND_MATCH_CHIP_IP(BCM4329, BCM4329_289PIN),
	BHND_MATCH_CHIP_TYPE(SIBA)
};

A bhnd_core_match match descriptor may be initialized using one or more of the following macros:

For example:

struct bhnd_core_match core_desc = {
	BHND_MATCH_CORE(BHND_MFGID_BROADCOM, BHND_COREID_CC),
	BHND_MATCH_CORE_REV(HWREV_RANGE(0, 10))
};

The bhnd_device_match match descriptor supports matching on all board, chip, and core attributes, and may be initialized using any of the bhnd_board_match, bhnd_chip_match, or bhnd_core_match macros.

For example:

struct bhnd_device_match device_desc = {
	BHND_MATCH_CHIP_IP(BCM4329, BCM4329_289PIN),
	BHND_MATCH_BOARD_VENDOR(BHND_MFGID_BROADCOM),
	BHND_MATCH_BOARD_TYPE(BCM94329AGB),
	BHND_MATCH_CORE(BHND_MFGID_BROADCOM, BHND_COREID_CC),
};

A bhnd_hwrev_match match descriptor may be initialized using one of the following macros:

Device Table Functions

The bhnd_device_lookup() function returns a pointer to the first entry in device table table that matches the device dev. The table entry size is specified by entry_size.

The bhnd_device_quirks() function scan the device table table for all quirk entries that match the device dev, returning the bitwise OR of all matching quirk flags. The table entry size is specified by entry_size.

The bhnd_device structure contains the following fields:

The following device flags are supported:

A bhnd_device table entry may be initialized using one of the following macros:

BHND_DEVICE(vendor, device, desc, quirks, flags)

Match on devices with a vendor ID equal to BHND_MFGID_ ## vendor and a core device ID equal to BHND_COREID_ ## device.

The device's verbose description is specified by the desc argument, a pointer to the device-specific quirks table is specified by the quirks argument, and any required device flags may be provided in flags. The optional flags argument defaults to BHND_DF_ANY if omitted.

BHND_DEVICE_END

Terminate the bhnd_device table.

For example:

struct bhnd_device bhnd_usb11_devices[] = {
	BHND_DEVICE(BCM, USB, "Broadcom USB1.1 Controller",
	    bhnd_usb11_quirks),
	BHND_DEVICE_END
};

The bhnd_device_quirk structure contains the following fields:

A bhnd_device_quirk table entry may be initialized using one of the following convenience macros:

struct bhnd_device_quirk bhnd_usb11_quirks[] = {
	BHND_DEVICE(BCM, USB, "Broadcom USB1.1 Controller",
	    bhnd_usb11_quirks),
	BHND_DEVICE_END
};

DMA Address Translation Functions

If a suitable DMA address translation descriptor is found, it will be stored in translation, and a bus DMA tag specifying the DMA translation's address restrictions will be stored in dmat. The translation and dmat arguments may be NULL if the translation descriptor or DMA tag are not desired.

The following DMA translation flags are supported:

BHND_DMA_TRANSLATION_PHYSMAP

The translation remaps the device's physical address space.

This is used in conjunction with BHND_DMA_TRANSLATION_BYTESWAPPED to define a DMA translation that provides byteswapped access to physical memory on big-endian MIPS SoCs.

BHND_DMA_TRANSLATION_BYTESWAPPED

The translation provides a byte-swapped mapping; write requests will be byte-swapped before being written to memory, and read requests will be byte-swapped before being returned.

This is primarily used to perform efficient byte swapping of DMA data on embedded MIPS SoCs executing in big-endian mode.

The following symbolic constants are defined for common DMA address widths:

The bhnd_dma_translation structure contains the following fields:

base_addr

Host-to-device physical address translation. This may be added to a host physical address to produce a device DMA address.

addr_mask

Device-addressable address mask. This defines the device DMA address range, and excludes any bits reserved for mapping the address within the translation window at base_addr.

addrext_mask

Device-addressable extended address mask. If a the per-core BHND DMA engine supports the 'addrext' control field, it can be used to provide address bits excluded by addr_mask.

Support for DMA extended address changes — including coordination with the core providing device-to-host DMA address translation — is handled transparently by the DMA engine.

For example, on PCI Wi-Fi devices, the Wi-Fi core's DMA engine will (in effect) update the PCI host bridge core's DMA sbtopcitranslation base address to map the target address prior to performing a DMA transaction.

flags

Translation flags.

Interrupt Functions

The bhnd_get_intr_ivec() function is used to determine the backplane interrupt vector assigned to interrupt line intr on the device dev, writing the result to ivec. Interrupt vector assignments are backplane-specific: On BCMA devices, this function returns the OOB bus line assigned to the interrupt. On SIBA devices, it returns the target OCP slave flag number assigned to the interrupt.

The bhnd_map_intr() function is used to map interrupt line intr assigned to device dev to an IRQ number, writing the result to irq. Until unmapped, this IRQ may be used when allocating a resource of type SYS_RES_IRQ.

Ownership of the interrupt mapping is assumed by the caller, and must be explicitly released using bhnd_unmap_intr.

The bhnd_unmap_intr() function is used to unmap bus IRQ irq previously mapped using bhnd_map_intr() by the device dev.

NVRAM Functions

Before the call, the maximum capacity of buf is specified by len. After a successful call — or if ENOMEM is returned — the size of the available data will be written to len. The size of the desired data representation can be determined by calling bhnd_nvram_getvar() with a NULL argument for buf.

The following NVRAM data types are supported:

The bhnd_nvram_getvar_array(), bhnd_nvram_getvar_int(), bhnd_nvram_getvar_int8(), bhnd_nvram_getvar_int16(), bhnd_nvram_getvar_int32(), bhnd_nvram_getvar_uint(), bhnd_nvram_getvar_uint8(), bhnd_nvram_getvar_uint16(), bhnd_nvram_getvar_uint32(), and bhnd_nvram_getvar_str() functions are convenience wrappers for bhnd_nvram_getvar().

The bhnd_nvram_getvar_array() function returns either a value of exactly size in buf, or returns an error code of ENXIO if the data representation is not exactly size in length.

The bhnd_nvram_getvar_int() and bhnd_nvram_getvar_uint() functions return the value of NVRAM variable name, coerced to a signed or unsigned integer type of width (1, 2, or 4 bytes).

The bhnd_nvram_getvar_int8(), bhnd_nvram_getvar_int16(), bhnd_nvram_getvar_int32(), bhnd_nvram_getvar_uint(), bhnd_nvram_getvar_uint8(), bhnd_nvram_getvar_uint16(), and bhnd_nvram_getvar_uint32() functions return the value of NVRAM variable name, coerced to a signed or unsigned 8, 16, or 32-bit integer type.

The bhnd_nvram_getvar_str() functions return the value of NVRAM variable name, coerced to a NUL-terminated string.

The bhnd_nvram_string_array_next() function iterates over all strings in the inp BHND_NVRAM_TYPE_STRING_ARRAY value. The size of inp, including any terminating NUL character(s), is specified using the ilen argument. The prev argument should be either a string pointer previously returned by bhnd_nvram_string_array_next(), or NULL to begin iteration. If prev is not NULL, the olen argument must be a pointer to the length previously returned by bhnd_nvram_string_array_next(). On success, the next string element's length will be written to this pointer.

Port/Region Functions

The following port types are supported:

The bhnd_decode_port_rid() function is used to decode the resource ID rid assigned to device dev, of resource type type, writing the port type to port_type, port number to port, and region number to region.

The bhnd_get_port_count() function returns the number of ports of type type assigned to device dev.

The bhnd_get_port_rid() function returns the resource ID for the SYS_RES_MEMORY resource mapping the port of type and region on device dev, or -1 if the port or region are invalid, or do not have an assigned resource ID.

The bhnd_get_region_addr() function is used to determine the base address and size of the memory region on port of type assigned to dev. The region's base device address will be written to region_addr, and the region size to region_size.

The bhnd_get_region_count() function returns the number of memory regions mapped to port of type on device dev.

The bhnd_is_region_valid() function returns true if region is a valid region mapped by port of type on device dev.

Power Management Functions

The bhnd_alloc_pmu() function is used to allocate per-device PMU state and enable PMU request handling for device dev. The memory region containing the device's PMU register block must be allocated using bus_alloc_resource(9) or bhnd_alloc_resource() before calling bhnd_alloc_pmu(), and must not be released until after calling bhnd_release_pmu().

On all supported BHND hardware, the PMU register block is mapped by the device's control/status registers in the first device port and region.

The bhnd_release_pmu() function releases the per-device PMU state previously allocated for device dev using bhnd_alloc_pmu(). Any outstanding clock and external resource requests will be discarded upon release of the device PMU state.

The bhnd_enable_clocks() function is used to request that clocks be powered up and routed to the backplane on behalf of device dev. This will power any clock sources required (e.g., XTAL, PLL, etc) and wait until the requested clocks are stable. If the request succeeds, any previous clock requests issued by dev will be discarded.

The following clocks are supported, and may be combined using bitwise OR to request multiple clocks:

The bhnd_request_clock() function is used to request that clock (or faster) be powered up and routed to device dev.

The bhnd_get_clock_freq() function is used to request the current clock frequency of clock, writing the frequency in Hz to freq.

The bhnd_get_clock_latency() function is used to determine the transition latency required for clock, writing the latency in microseconds to latency. The BHND_CLOCK_HT latency value is suitable for use as the D11 Wi-Fi core fastpwrup_dly value.

The bhnd_request_ext_rsrc() function is used to request that the external PMU-managed resource assigned to device dev, identified by device-specific identifier rsrc, be powered up.

The bhnd_release_ext_rsrc() function releases any outstanding requests by device dev for the PMU-managed resource identified by device-specific identifier rsrc. If an external resource is shared by multiple devices, it will not be powered down until all device requests are released.

Service Provider Functions

The following service types are supported:

The bhnd_deregister_provider() function attempts to remove provider registration for the device dev and service. If a service argument of BHND_SERVICE_ANY is specified, this function will attempt to remove all service provider registrations for dev.

The bhnd_retain_provider() function retains and returns a reference to the provider registered for service with the parent bhnd(4) bus of devce dev, if available. On success, the caller is responsible for releasing this provider reference using bhnd_release_provider(). The service provider is guaranteed to remain available until the provider reference is released.

The bhnd_release_provider() function releases a reference to a provider for service, previously retained by device dev using bhnd_retain_provider().

Utility Functions

The bhnd_find_core_class() function looks up the BHND class, if known, for the BHND vendor ID vendor and device ID device.

The bhnd_find_core_name() function is used to fetch the human-readable name, if known, for the BHND core with a vendor ID of vendor and device ID of device.

The bhnd_core_class() and bhnd_core_name() functions are convenience wrappers for bhnd_find_core_class() and bhnd_find_core_name(), that use the vendor and device fields of the core info structure ci.

The bhnd_format_chip_id() function writes a NUL-terminated human-readable representation of the BHND chip_id value to the specified buffer with a capacity of size. No more than size-1 characters will be written, with the size'th character set to '\0'. A buffer size of BHND_CHIPID_MAX_NAMELEN is sufficient for any string representation produced using bhnd_format_chip_id().

The bhnd_set_custom_core_desc() function uses the bhnd(4) device identification of dev, overriding the core name with the specified dev_name, to populate the device's verbose description using device_set_desc(9).

The bhnd_set_default_core_desc() function uses the bhnd(4) device identification of dev to populate the device's verbose description using device_set_desc(9).

The bhnd_vendor_name() function returns the human-readable name for the JEP-106, ARM 4-bit continuation encoded manufacturer ID vendor, if known.

Bus Resource Functions

The bhnd_alloc_resource() and bhnd_alloc_resource_any() functions return a pointer to struct resource on success, a null pointer otherwise.

Device Configuration Functions

[EINVAL]

The device is not a direct child of the bhnd(4) bus

[EINVAL]

The requested width is not one of 1, 2, or 4 bytes.

[ENODEV]

Accessing agent/config space for the device is unsupported.

[EFAULT]

The requested offset or width exceeds the bounds of the mapped agent/config space.

The bhnd_read_ioctl(), bhnd_write_ioctl(), bhnd_read_iost(), bhnd_reset_hw(), and bhnd_suspend_hw() functions return 0 on success, otherwise an appropriate error code is returned.

Device Information Functions

DMA Address Translation Functions

[ENODEV]

DMA is not supported.

[ENOENT]

No DMA translation matching the requested address width and translation flags is available.

If fetching the requested DMA address translation otherwise fails, an appropriate error code will be returned.

Interrupt Functions

The bhnd_map_intr() function returns 0 on success, otherwise an appropriate error code is returned.

NVRAM Functions

[ENODEV]

If an NVRAM provider has not been registered with the bus.

[ENOENT]

The requested variable was not found.

[ENOMEM]

If the buffer of size is too small to hold the requested value.

[EOPNOTSUPP]

If the value's native type is incompatible with and cannot be coerced to the requested type.

[ERANGE]

If value coercion would overflow (or underflow) the requested type

If reading the variable otherwise fails, an appropriate error code will be returned.

Port/Region Functions

The bhnd_get_port_rid() function returns the resource ID for the requested port and region, or -1 if the port or region are invalid, or do not have an assigned resource ID.

The bhnd_get_region_addr() function returns 0 on success, or an appropriate error code if no matching port/region is found.

PMU Functions

The bhnd_release_pmu() function returns 0 on success, otherwise an appropriate error code is returned, and the core state will be left unmodified.

The bhnd_enable_clocks() and bhnd_request_clock() functions return 0 on success, or one of the following values on error:

[ENODEV]

An unsupported clock was requested.

[ENXIO]

No PMU or PWRCTL provider has been registered with the bus.

The bhnd_get_clock_freq() function returns 0 on success, or ENODEV if the frequency for the specified clock is not available.

The bhnd_get_clock_latency() function returns 0 on success, or ENODEV if the transition latency for the specified clock is not available.

The bhnd_request_ext_rsrc() and bhnd_release_ext_rsrc() functions return 0 on success, otherwise an appropriate error code is returned.

Service Provider Functions

The bhnd_deregister_provider() function returns 0 on success, or EBUSY if active references to the service provider exist.

The bhnd_retain_provider() function returns a pointer to device_t on success, a null pointer if the requested provider is not registered.

Utility Functions