INTERFACE bhnd_bus;
HEADER {
/* forward declarations */
struct bhnd_board_info;
struct bhnd_core_info;
struct bhnd_chipid;
struct bhnd_dma_translation;
struct bhnd_devinfo;
struct bhnd_resource;
}
CODE {
static bhnd_erom_class_t *
bhnd_bus_null_get_erom_class(driver_t *driver)
{
return (NULL);
}
static struct bhnd_chipid *
bhnd_bus_null_get_chipid(device_t dev, device_t child)
{
panic("bhnd_bus_get_chipid unimplemented");
}
static int
bhnd_bus_null_read_ioctl(device_t dev, device_t child, uint16_t *ioctl)
{
panic("bhnd_bus_read_ioctl unimplemented");
}
static int
bhnd_bus_null_write_ioctl(device_t dev, device_t child, uint16_t value,
uint16_t mask)
{
panic("bhnd_bus_write_ioctl unimplemented");
}
static int
bhnd_bus_null_read_iost(device_t dev, device_t child, uint16_t *iost)
{
panic("bhnd_bus_read_iost unimplemented");
}
static bool
bhnd_bus_null_is_hw_suspended(device_t dev, device_t child)
{
panic("bhnd_bus_is_hw_suspended unimplemented");
}
static int
bhnd_bus_null_reset_hw(device_t dev, device_t child, uint16_t ioctl,
uint16_t reset_ioctl)
{
panic("bhnd_bus_reset_hw unimplemented");
}
static int
bhnd_bus_null_suspend_hw(device_t dev, device_t child)
{
panic("bhnd_bus_suspend_hw unimplemented");
}
static bhnd_attach_type
bhnd_bus_null_get_attach_type(device_t dev, device_t child)
{
panic("bhnd_bus_get_attach_type unimplemented");
}
static int
bhnd_bus_null_read_board_info(device_t dev, device_t child,
struct bhnd_board_info *info)
{
panic("bhnd_bus_read_boardinfo unimplemented");
}
static void
bhnd_bus_null_child_added(device_t dev, device_t child)
{
}
static int
bhnd_bus_null_alloc_pmu(device_t dev, device_t child)
{
panic("bhnd_bus_alloc_pmu unimplemented");
}
static int
bhnd_bus_null_release_pmu(device_t dev, device_t child)
{
panic("bhnd_bus_release_pmu unimplemented");
}
static int
bhnd_bus_null_get_clock_latency(device_t dev, device_t child,
bhnd_clock clock, u_int *latency)
{
panic("bhnd_pmu_get_clock_latency unimplemented");
}
static int
bhnd_bus_null_get_clock_freq(device_t dev, device_t child,
bhnd_clock clock, u_int *freq)
{
panic("bhnd_pmu_get_clock_freq unimplemented");
}
static int
bhnd_bus_null_request_clock(device_t dev, device_t child,
bhnd_clock clock)
{
panic("bhnd_bus_request_clock unimplemented");
}
static int
bhnd_bus_null_enable_clocks(device_t dev, device_t child,
uint32_t clocks)
{
panic("bhnd_bus_enable_clocks unimplemented");
}
static int
bhnd_bus_null_request_ext_rsrc(device_t dev, device_t child,
u_int rsrc)
{
panic("bhnd_bus_request_ext_rsrc unimplemented");
}
static int
bhnd_bus_null_release_ext_rsrc(device_t dev, device_t child,
u_int rsrc)
{
panic("bhnd_bus_release_ext_rsrc unimplemented");
}
static int
bhnd_bus_null_read_config(device_t dev, device_t child,
bus_size_t offset, void *value, u_int width)
{
panic("bhnd_bus_null_read_config unimplemented");
}
static void
bhnd_bus_null_write_config(device_t dev, device_t child,
bus_size_t offset, void *value, u_int width)
{
panic("bhnd_bus_null_write_config unimplemented");
}
static device_t
bhnd_bus_null_find_hostb_device(device_t dev)
{
return (NULL);
}
static struct bhnd_service_registry *
bhnd_bus_null_get_service_registry(device_t dev)
{
panic("bhnd_bus_get_service_registry unimplemented");
}
static bool
bhnd_bus_null_is_hw_disabled(device_t dev, device_t child)
{
panic("bhnd_bus_is_hw_disabled unimplemented");
}
static int
bhnd_bus_null_get_probe_order(device_t dev, device_t child)
{
panic("bhnd_bus_get_probe_order unimplemented");
}
static uintptr_t
bhnd_bus_null_get_intr_domain(device_t dev, device_t child, bool self)
{
/* Unsupported */
return (0);
}
static u_int
bhnd_bus_null_get_intr_count(device_t dev, device_t child)
{
return (0);
}
static int
bhnd_bus_null_get_intr_ivec(device_t dev, device_t child, u_int intr,
u_int *ivec)
{
panic("bhnd_bus_get_intr_ivec unimplemented");
}
static int
bhnd_bus_null_map_intr(device_t dev, device_t child, u_int intr,
rman_res_t *irq)
{
panic("bhnd_bus_map_intr unimplemented");
}
static int
bhnd_bus_null_unmap_intr(device_t dev, device_t child, rman_res_t irq)
{
panic("bhnd_bus_unmap_intr unimplemented");
}
static int
bhnd_bus_null_get_port_rid(device_t dev, device_t child,
bhnd_port_type port_type, u_int port, u_int region)
{
return (-1);
}
static int
bhnd_bus_null_decode_port_rid(device_t dev, device_t child, int type,
int rid, bhnd_port_type *port_type, u_int *port, u_int *region)
{
return (ENOENT);
}
static int
bhnd_bus_null_get_region_addr(device_t dev, device_t child,
bhnd_port_type type, u_int port, u_int region, bhnd_addr_t *addr,
bhnd_size_t *size)
{
return (ENOENT);
}
static int
bhnd_bus_null_get_nvram_var(device_t dev, device_t child,
const char *name, void *buf, size_t *size, bhnd_nvram_type type)
{
return (ENODEV);
}
}
/**
* Return the bhnd(4) bus driver's device enumeration parser class.
*
* @param driver The bhnd bus driver instance.
*/
STATICMETHOD bhnd_erom_class_t * get_erom_class {
driver_t *driver;
} DEFAULT bhnd_bus_null_get_erom_class;
/**
* Register a shared bus @p provider for a given @p service.
*
* @param dev The parent of @p child.
* @param child The requesting child device.
* @param provider The service provider to register.
* @param service The service for which @p provider will be registered.
*
* @retval 0 success
* @retval EEXIST if an entry for @p service already exists.
* @retval non-zero if registering @p provider otherwise fails, a regular
* unix error code will be returned.
*/
METHOD int register_provider {
device_t dev;
device_t child;
device_t provider;
bhnd_service_t service;
} DEFAULT bhnd_bus_generic_register_provider;
/**
* Attempt to remove the @p service provider registration for @p provider.
*
* @param dev The parent of @p child.
* @param child The requesting child device.
* @param provider The service provider to be deregistered.
* @param service The service for which @p provider will be deregistered,
* or BHND_SERVICE_INVALID to remove all service
* registrations for @p provider.
*
* @retval 0 success
* @retval EBUSY if active references to @p provider exist; @see
* BHND_BUS_RETAIN_PROVIDER() and
* BHND_BUS_RELEASE_PROVIDER().
*/
METHOD int deregister_provider {
device_t dev;
device_t child;
device_t provider;
bhnd_service_t service;
} DEFAULT bhnd_bus_generic_deregister_provider;
/**
* Retain and return a reference to the registered @p service provider, if any.
*
* @param dev The parent of @p child.
* @param child The requesting child device.
* @param service The service for which a provider should be returned.
*
* On success, the caller assumes ownership the returned provider, and
* is responsible for releasing this reference via
* BHND_BUS_RELEASE_PROVIDER().
*
* @retval device_t success
* @retval NULL if no provider is registered for @p service.
*/
METHOD device_t retain_provider {
device_t dev;
device_t child;
bhnd_service_t service;
} DEFAULT bhnd_bus_generic_retain_provider;
/**
* Release a reference to a service provider previously returned by
* BHND_BUS_RETAIN_PROVIDER().
*
* @param dev The parent of @p child.
* @param child The requesting child device.
* @param provider The provider to be released.
* @param service The service for which @p provider was previously
* retained.
*/
METHOD void release_provider {
device_t dev;
device_t child;
device_t provider;
bhnd_service_t service;
} DEFAULT bhnd_bus_generic_release_provider;
/**
* Return a struct bhnd_service_registry.
*
* Used by drivers which use bhnd_bus_generic_sr_register_provider() etc.
* to implement service provider registration. It should return a service
* registry that may be used to resolve provider requests from @p child.
*
* @param dev The parent of @p child.
* @param child The requesting child device.
*/
METHOD struct bhnd_service_registry * get_service_registry {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_get_service_registry;
/**
* Return the active host bridge core for the bhnd bus, if any.
*
* @param dev The bhnd bus device.
*
* @retval device_t if a hostb device exists
* @retval NULL if no hostb device is found.
*/
METHOD device_t find_hostb_device {
device_t dev;
} DEFAULT bhnd_bus_null_find_hostb_device;
/**
* Return true if the hardware components required by @p child are unpopulated
* or otherwise unusable.
*
* In some cases, enumerated devices may have pins that are left floating, or
* the hardware may otherwise be non-functional; this method allows a parent
* device to explicitly specify if a successfully enumerated @p child should
* be disabled.
*
* @param dev The device whose child is being examined.
* @param child The child device.
*/
METHOD bool is_hw_disabled {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_is_hw_disabled;
/**
* Return the probe (and attach) order for @p child.
*
* All devices on the bhnd(4) bus will be probed, attached, or resumed in
* ascending order; they will be suspended, shutdown, and detached in
* descending order.
*
* The following device methods will be dispatched in ascending probe order
* by the bus:
*
* - DEVICE_PROBE()
* - DEVICE_ATTACH()
* - DEVICE_RESUME()
*
* The following device methods will be dispatched in descending probe order
* by the bus:
*
* - DEVICE_SHUTDOWN()
* - DEVICE_DETACH()
* - DEVICE_SUSPEND()
*
* @param dev The device whose child is being examined.
* @param child The child device.
*
* Refer to BHND_PROBE_* and BHND_PROBE_ORDER_* for the standard set of
* priorities.
*/
METHOD int get_probe_order {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_get_probe_order;
/**
* Return the BHND chip identification for the parent bus.
*
* @param dev The device whose child is being examined.
* @param child The child device.
*/
METHOD const struct bhnd_chipid * get_chipid {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_get_chipid;
/**
* Return the BHND attachment type of the parent bus.
*
* @param dev The device whose child is being examined.
* @param child The child device.
*
* @retval BHND_ATTACH_ADAPTER if the bus is resident on a bridged adapter,
* such as a WiFi chipset.
* @retval BHND_ATTACH_NATIVE if the bus provides hardware services (clock,
* CPU, etc) to a directly attached native host.
*/
METHOD bhnd_attach_type get_attach_type {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_get_attach_type;
/**
* Find the best available DMA address translation capable of mapping a
* physical host address to a BHND DMA device address of @p width with
* @p flags.
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting the DMA address translation.
* @param width The address width within which the translation window must
* reside (see BHND_DMA_ADDR_*).
* @param flags Required translation flags (see BHND_DMA_TRANSLATION_*).
* @param[out] dmat On success, will be populated with a DMA tag specifying the
* @p translation DMA address restrictions. This argment may be NULL if the DMA
* tag is not desired.
* the set of valid host DMA addresses reachable via @p translation.
* @param[out] translation On success, will be populated with a DMA address
* translation descriptor for @p child. This argment may be NULL if the
* descriptor is not desired.
*
* @retval 0 success
* @retval ENODEV If DMA is not supported.
* @retval ENOENT If no DMA translation matching @p width and @p flags is
* available.
* @retval non-zero If determining the DMA address translation for @p child
* otherwise fails, a regular unix error code will be returned.
*/
METHOD int get_dma_translation {
device_t dev;
device_t child;
u_int width;
uint32_t flags;
bus_dma_tag_t *dmat;
struct bhnd_dma_translation *translation;
} DEFAULT bhnd_bus_generic_get_dma_translation;
/**
* Attempt to read the BHND board identification from the parent bus.
*
* This relies on NVRAM access, and will fail if a valid NVRAM device cannot
* be found, or is not yet attached.
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting board info.
* @param[out] info On success, will be populated with the bhnd(4) device's
* board information.
*
* @retval 0 success
* @retval ENODEV No valid NVRAM source could be found.
* @retval non-zero If reading @p name otherwise fails, a regular unix
* error code will be returned.
*/
METHOD int read_board_info {
device_t dev;
device_t child;
struct bhnd_board_info *info;
} DEFAULT bhnd_bus_null_read_board_info;
/**
* Notify a bhnd bus that a child was added.
*
* This method must be called by concrete bhnd(4) driver impementations
* after @p child's bus state is fully initialized.
*
* @param dev The bhnd bus whose child is being added.
* @param child The child added to @p dev.
*/
METHOD void child_added {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_child_added;
/**
* Read the current value of @p child's I/O control register.
*
* @param dev The bhnd bus parent of @p child.
* @param child The bhnd device for which the I/O control register should be
* read.
* @param[out] ioctl On success, the I/O control register value.
*
* @retval 0 success
* @retval EINVAL If @p child is not a direct child of @p dev.
* @retval ENODEV If agent/config space for @p child is unavailable.
* @retval non-zero If reading the IOCTL register otherwise fails, a regular
* unix error code will be returned.
*/
METHOD int read_ioctl {
device_t dev;
device_t child;
uint16_t *ioctl;
} DEFAULT bhnd_bus_null_read_ioctl;
/**
* Write @p value with @p mask to @p child's I/O control register.
*
* @param dev The bhnd bus parent of @p child.
* @param child The bhnd device for which the I/O control register should
* be updated.
* @param value The value to be written (see also BHND_IOCTL_*).
* @param mask Only the bits defined by @p mask will be updated from @p value.
*
* @retval 0 success
* @retval EINVAL If @p child is not a direct child of @p dev.
* @retval ENODEV If agent/config space for @p child is unavailable.
* @retval non-zero If writing the IOCTL register otherwise fails, a regular
* unix error code will be returned.
*/
METHOD int write_ioctl {
device_t dev;
device_t child;
uint16_t value;
uint16_t mask;
} DEFAULT bhnd_bus_null_write_ioctl;
/**
* Read the current value of @p child's I/O status register.
*
* @param dev The bhnd bus parent of @p child.
* @param child The bhnd device for which the I/O status register should be
* read.
* @param[out] iost On success, the I/O status register value.
*
* @retval 0 success
* @retval EINVAL If @p child is not a direct child of @p dev.
* @retval ENODEV If agent/config space for @p child is unavailable.
* @retval non-zero If reading the IOST register otherwise fails, a regular
* unix error code will be returned.
*/
METHOD int read_iost {
device_t dev;
device_t child;
uint16_t *iost;
} DEFAULT bhnd_bus_null_read_iost;
/**
* Return true if the given bhnd device's hardware is currently held
* in a RESET state or otherwise not clocked (BHND_IOCTL_CLK_EN).
*
* @param dev The bhnd bus parent of @p child.
* @param child The device to query.
*
* @retval true If @p child is held in RESET or not clocked (BHND_IOCTL_CLK_EN),
* or an error occurred determining @p child's hardware state.
* @retval false If @p child is clocked and is not held in RESET.
*/
METHOD bool is_hw_suspended {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_is_hw_suspended;
/**
* Place the bhnd(4) device's hardware into a low-power RESET state with
* the @p reset_ioctl I/O control flags set, and then bring the hardware out of
* RESET with the @p ioctl I/O control flags set.
*
* Any clock or resource PMU requests previously made by @p child will be
* invalidated.
*
* @param dev The bhnd bus parent of @p child.
* @param child The device to be reset.
* @param ioctl Device-specific I/O control flags to be set when bringing
* the core out of its RESET state (see BHND_IOCTL_*).
* @param reset_ioctl Device-specific I/O control flags to be set when placing
* the core into its RESET state.
*
* @retval 0 success
* @retval non-zero error
*/
METHOD int reset_hw {
device_t dev;
device_t child;
uint16_t ioctl;
uint16_t reset_ioctl;
} DEFAULT bhnd_bus_null_reset_hw;
/**
* Suspend @p child's hardware in a low-power RESET state.
*
* Any clock or resource PMU requests previously made by @p dev will be
* invalidated.
*
* The hardware may be brought out of RESET via bhnd_reset_hw().
*
* @param dev The bhnd bus parent of @p child.
* @param dev The device to be suspended.
* @param ioctl Device-specific I/O control flags to be set when placing
* the core into its RESET state (see BHND_IOCTL_*).
*
* @retval 0 success
* @retval non-zero error
*/
METHOD int suspend_hw {
device_t dev;
device_t child;
uint16_t ioctl;
} DEFAULT bhnd_bus_null_suspend_hw;
/**
* Allocate per-core PMU resources and enable PMU request handling for @p child.
*
* The region containing the core's PMU register block (if any) must be
* allocated via bus_alloc_resource(9) (or bhnd_alloc_resource) before
* calling BHND_BUS_ALLOC_PMU(), and must not be released until after
* calling BHND_BUS_RELEASE_PMU().
*
* @param dev The parent of @p child.
* @param child The requesting bhnd device.
*
* @retval 0 success
* @retval non-zero if enabling per-core PMU request handling fails, a
* regular unix error code will be returned.
*/
METHOD int alloc_pmu {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_alloc_pmu;
/**
* Release per-core PMU resources allocated for @p child. Any
* outstanding PMU requests are discarded.
*
* @param dev The parent of @p child.
* @param child The requesting bhnd device.
*/
METHOD int release_pmu {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_release_pmu;
/**
* Return the transition latency required for @p clock in microseconds, if
* known.
*
* The BHND_CLOCK_HT latency value is suitable for use as the D11 core's
* 'fastpwrup_dly' value.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before querying PMU clocks.
*
* @param dev The parent of @p child.
* @param child The requesting bhnd device.
* @param clock The clock to be queried for transition latency.
* @param[out] latency On success, the transition latency of @p clock in
* microseconds.
*
* @retval 0 success
* @retval ENODEV If the transition latency for @p clock is not available.
*/
METHOD int get_clock_latency {
device_t dev;
device_t child;
bhnd_clock clock;
u_int *latency;
} DEFAULT bhnd_bus_null_get_clock_latency;
/**
* Return the frequency for @p clock in Hz, if known.
*
* @param dev The parent of @p child.
* @param child The requesting bhnd device.
* @param clock The clock to be queried.
* @param[out] freq On success, the frequency of @p clock in Hz.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before querying PMU clocks.
*
* @retval 0 success
* @retval ENODEV If the frequency for @p clock is not available.
*/
METHOD int get_clock_freq {
device_t dev;
device_t child;
bhnd_clock clock;
u_int *freq;
} DEFAULT bhnd_bus_null_get_clock_freq;
/**
* Request that @p clock (or faster) be routed to @p child.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before it can request clock resources.
*
* @note Any outstanding PMU clock requests will be discarded upon calling
* BHND_BUS_RESET_HW() or BHND_BUS_SUSPEND_HW().
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting @p clock.
* @param clock The requested clock source.
*
* @retval 0 success
* @retval ENODEV If an unsupported clock was requested.
* @retval ETIMEDOUT If the clock request succeeds, but the clock is not
* detected as ready within the PMU's maximum transition
* delay. This should not occur in normal operation.
*/
METHOD int request_clock {
device_t dev;
device_t child;
bhnd_clock clock;
} DEFAULT bhnd_bus_null_request_clock;
/**
* Request that @p clocks be powered on behalf of @p child.
*
* This will power on clock sources (e.g. XTAL, PLL, etc) required for
* @p clocks and wait until they are ready, discarding any previous
* requests by @p child.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before it can request clock resources.
*
* @note Any outstanding PMU clock requests will be discarded upon calling
* BHND_BUS_RESET_HW() or BHND_BUS_SUSPEND_HW().
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting @p clock.
* @param clock The requested clock source.
*
* @retval 0 success
* @retval ENODEV If an unsupported clock was requested.
* @retval ETIMEDOUT If the clock request succeeds, but the clock is not
* detected as ready within the PMU's maximum transition
* delay. This should not occur in normal operation.
*/
METHOD int enable_clocks {
device_t dev;
device_t child;
uint32_t clocks;
} DEFAULT bhnd_bus_null_enable_clocks;
/**
* Power up an external PMU-managed resource assigned to @p child.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before it can request PMU resources.
*
* @note Any outstanding PMU resource requests will be released upon calling
* BHND_BUS_RESET_HW() or BHND_BUS_SUSPEND_HW().
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting @p rsrc.
* @param rsrc The core-specific external resource identifier.
*
* @retval 0 success
* @retval ENODEV If the PMU does not support @p rsrc.
* @retval ETIMEDOUT If the clock request succeeds, but the clock is not
* detected as ready within the PMU's maximum transition
* delay. This should not occur in normal operation.
*/
METHOD int request_ext_rsrc {
device_t dev;
device_t child;
u_int rsrc;
} DEFAULT bhnd_bus_null_request_ext_rsrc;
/**
* Power down an external PMU-managed resource assigned to @p child.
*
* @note A driver must ask the bhnd bus to allocate PMU request state
* via BHND_BUS_ALLOC_PMU() before it can request PMU resources.
*
* @param dev The parent of @p child.
* @param child The bhnd device requesting @p rsrc.
* @param rsrc The core-specific external resource number.
*
* @retval 0 success
* @retval ENODEV If the PMU does not support @p rsrc.
* @retval ETIMEDOUT If the clock request succeeds, but the clock is not
* detected as ready within the PMU's maximum transition
* delay. This should not occur in normal operation.
*/
METHOD int release_ext_rsrc {
device_t dev;
device_t child;
u_int rsrc;
} DEFAULT bhnd_bus_null_release_ext_rsrc;
/**
* Read @p width bytes at @p offset from the bus-specific agent/config
* space of @p child.
*
* @param dev The parent of @p child.
* @param child The bhnd device for which @p offset should be read.
* @param offset The offset to be read.
* @param[out] value On success, the bytes read at @p offset.
* @param width The size of the access. Must be 1, 2 or 4 bytes.
*
* The exact behavior of this method is bus-specific. On a bcma(4) bus, this
* method provides access to the first agent port of @p child; on a siba(4) bus,
* this method provides access to the core's CFG0 register block.
*
* @note Device drivers should only use this API for functionality
* that is not available via another bhnd(4) function.
*
* @retval 0 success
* @retval EINVAL If @p child is not a direct child of @p dev.
* @retval EINVAL If @p width is not one of 1, 2, or 4 bytes.
* @retval ENODEV If accessing agent/config space for @p child is unsupported.
* @retval EFAULT If reading @p width at @p offset exceeds the bounds of
* the mapped agent/config space for @p child.
*/
METHOD int read_config {
device_t dev;
device_t child;
bus_size_t offset;
void *value;
u_int width;
} DEFAULT bhnd_bus_null_read_config;
/**
* Read @p width bytes at @p offset from the bus-specific agent/config
* space of @p child.
*
* @param dev The parent of @p child.
* @param child The bhnd device for which @p offset should be read.
* @param offset The offset to be written.
* @param value A pointer to the value to be written.
* @param width The size of @p value. Must be 1, 2 or 4 bytes.
*
* The exact behavior of this method is bus-specific. In the case of
* bcma(4), this method provides access to the first agent port of @p child.
*
* @note Device drivers should only use this API for functionality
* that is not available via another bhnd(4) function.
*
* @retval 0 success
* @retval EINVAL If @p child is not a direct child of @p dev.
* @retval EINVAL If @p width is not one of 1, 2, or 4 bytes.
* @retval ENODEV If accessing agent/config space for @p child is unsupported.
* @retval EFAULT If reading @p width at @p offset exceeds the bounds of
* the mapped agent/config space for @p child.
*/
METHOD int write_config {
device_t dev;
device_t child;
bus_size_t offset;
const void *value;
u_int width;
} DEFAULT bhnd_bus_null_write_config;
/**
* Allocate a bhnd resource.
*
* This method's semantics are functionally identical to the bus API of the same
* name; refer to BUS_ALLOC_RESOURCE for complete documentation.
*/
METHOD struct bhnd_resource * alloc_resource {
device_t dev;
device_t child;
int type;
int *rid;
rman_res_t start;
rman_res_t end;
rman_res_t count;
u_int flags;
} DEFAULT bhnd_bus_generic_alloc_resource;
/**
* Release a bhnd resource.
*
* This method's semantics are functionally identical to the bus API of the same
* name; refer to BUS_RELEASE_RESOURCE for complete documentation.
*/
METHOD int release_resource {
device_t dev;
device_t child;
int type;
int rid;
struct bhnd_resource *res;
} DEFAULT bhnd_bus_generic_release_resource;
/**
* Activate a bhnd resource.
*
* This method's semantics are functionally identical to the bus API of the same
* name; refer to BUS_ACTIVATE_RESOURCE for complete documentation.
*/
METHOD int activate_resource {
device_t dev;
device_t child;
int type;
int rid;
struct bhnd_resource *r;
} DEFAULT bhnd_bus_generic_activate_resource;
/**
* Deactivate a bhnd resource.
*
* This method's semantics are functionally identical to the bus API of the same
* name; refer to BUS_DEACTIVATE_RESOURCE for complete documentation.
*/
METHOD int deactivate_resource {
device_t dev;
device_t child;
int type;
int rid;
struct bhnd_resource *r;
} DEFAULT bhnd_bus_generic_deactivate_resource;
/**
* Return the interrupt domain.
*
* This globally unique value may be used as the interrupt controller 'xref'
* on targets that support INTRNG.
*
* @param dev The device whose child is being examined.
* @param child The child device.
* @param self If true, return @p child's interrupt domain, rather than the
* domain in which @p child resides.
*
* On Non-OFW targets, this should either return:
* - The pointer address of a device that can uniquely identify @p child's
* interrupt domain (e.g., the bhnd bus' device_t address), or
* - 0 if unsupported by the bus.
*
* On OFW (including FDT) targets, this should return the @p child's iparent
* property's xref if @p self is false, the child's own node xref value if
* @p self is true, or 0 if no interrupt parent is found.
*/
METHOD uintptr_t get_intr_domain {
device_t dev;
device_t child;
bool self;
} DEFAULT bhnd_bus_null_get_intr_domain;
/**
* Return the number of interrupt lines assigned to @p child.
*
* @param dev The bhnd device whose child is being examined.
* @param child The child device.
*/
METHOD u_int get_intr_count {
device_t dev;
device_t child;
} DEFAULT bhnd_bus_null_get_intr_count;
/**
* Get the backplane interrupt vector of the @p intr line attached to @p child.
*
* @param dev The device whose child is being examined.
* @param child The child device.
* @param intr The index of the interrupt line being queried.
* @param[out] ivec On success, the assigned hardware interrupt vector will be
* written to this pointer.
*
* On bcma(4) devices, this returns the OOB bus line assigned to the
* interrupt.
*
* On siba(4) devices, this returns the target OCP slave flag number assigned
* to the interrupt.
*
* @retval 0 success
* @retval ENXIO If @p intr exceeds the number of interrupt lines
* assigned to @p child.
*/
METHOD int get_intr_ivec {
device_t dev;
device_t child;
u_int intr;
u_int *ivec;
} DEFAULT bhnd_bus_null_get_intr_ivec;
/**
* Map the given @p intr to an IRQ number; until unmapped, this IRQ may be used
* to allocate a resource of type SYS_RES_IRQ.
*
* On success, the caller assumes ownership of the interrupt mapping, and
* is responsible for releasing the mapping via BHND_BUS_UNMAP_INTR().
*
* @param dev The bhnd bus device.
* @param child The requesting child device.
* @param intr The interrupt being mapped.
* @param[out] irq On success, the bus interrupt value mapped for @p intr.
*
* @retval 0 If an interrupt was assigned.
* @retval non-zero If mapping an interrupt otherwise fails, a regular
* unix error code will be returned.
*/
METHOD int map_intr {
device_t dev;
device_t child;
u_int intr;
rman_res_t *irq;
} DEFAULT bhnd_bus_null_map_intr;
/**
* Unmap an bus interrupt previously mapped via BHND_BUS_MAP_INTR().
*
* @param dev The bhnd bus device.
* @param child The requesting child device.
* @param intr The interrupt number being unmapped. This is equivalent to the
* bus resource ID for the interrupt.
*/
METHOD void unmap_intr {
device_t dev;
device_t child;
rman_res_t irq;
} DEFAULT bhnd_bus_null_unmap_intr;
/**
* Return true if @p region_num is a valid region on @p port_num of
* @p type attached to @p child.
*
* @param dev The device whose child is being examined.
* @param child The child device.
* @param type The port type being queried.
* @param port_num The port number being queried.
* @param region_num The region number being queried.
*/
METHOD bool is_region_valid {
device_t dev;
device_t child;
bhnd_port_type type;
u_int port_num;
u_int region_num;
};
/**
* Return the number of ports of type @p type attached to @p child.
*
* @param dev The device whose child is being examined.
* @param child The child device.
* @param type The port type being queried.
*/
METHOD u_int get_port_count {
device_t dev;
device_t child;
bhnd_port_type type;
};
/**
* Return the number of memory regions mapped to @p child @p port of
* type @p type.
*
* @param dev The device whose child is being examined.
* @param child The child device.
* @param port The port number being queried.
* @param type The port type being queried.
*/
METHOD u_int get_region_count {
device_t dev;
device_t child;
bhnd_port_type type;
u_int port;
};
/**
* Return the SYS_RES_MEMORY resource-ID for a port/region pair attached to
* @p child.
*
* @param dev The bus device.
* @param child The bhnd child.
* @param port_type The port type.
* @param port_num The index of the child interconnect port.
* @param region_num The index of the port-mapped address region.
*
* @retval -1 No such port/region found.
*/
METHOD int get_port_rid {
device_t dev;
device_t child;
bhnd_port_type port_type;
u_int port_num;
u_int region_num;
} DEFAULT bhnd_bus_null_get_port_rid;
/**
* Decode a port / region pair on @p child defined by @p type and @p rid.
*
* @param dev The bus device.
* @param child The bhnd child.
* @param type The resource type.
* @param rid The resource ID.
* @param[out] port_type The port's type.
* @param[out] port The port identifier.
* @param[out] region The identifier of the memory region on @p port.
*
* @retval 0 success
* @retval non-zero No matching type/rid found.
*/
METHOD int decode_port_rid {
device_t dev;
device_t child;
int type;
int rid;
bhnd_port_type *port_type;
u_int *port;
u_int *region;
} DEFAULT bhnd_bus_null_decode_port_rid;
/**
* Get the address and size of @p region on @p port.
*
* @param dev The bus device.
* @param child The bhnd child.
* @param port_type The port type.
* @param port The port identifier.
* @param region The identifier of the memory region on @p port.
* @param[out] region_addr The region's base address.
* @param[out] region_size The region's size.
*
* @retval 0 success
* @retval non-zero No matching port/region found.
*/
METHOD int get_region_addr {
device_t dev;
device_t child;
bhnd_port_type port_type;
u_int port;
u_int region;
bhnd_addr_t *region_addr;
bhnd_size_t *region_size;
} DEFAULT bhnd_bus_null_get_region_addr;
/**
* Read an NVRAM variable.
*
* It is the responsibility of the bus to delegate this request to
* the appropriate NVRAM child device, or to a parent bus implementation.
*
* @param dev The bus device.
* @param child The requesting device.
* @param name The NVRAM variable name.
* @param[out] buf On success, the requested value will be written
* to this buffer. This argment may be NULL if
* the value is not desired.
* @param[in,out] size The capacity of @p buf. On success, will be set
* to the actual size of the requested value.
* @param type The data type to be written to @p buf.
*
* @retval 0 success
* @retval ENOENT The requested variable was not found.
* @retval ENOMEM If @p buf is non-NULL and a buffer of @p size is too
* small to hold the requested value.
* @retval ENODEV No valid NVRAM source could be found.
* @retval EFTYPE If the @p name's data type cannot be coerced to @p type.
* @retval ERANGE If value coercion would overflow @p type.
* @retval non-zero If reading @p name otherwise fails, a regular unix
* error code will be returned.
*/
METHOD int get_nvram_var {
device_t dev;
device_t child;
const char *name;
void *buf;
size_t *size;
bhnd_nvram_type type;
} DEFAULT bhnd_bus_null_get_nvram_var;
/** An implementation of bus_read_1() compatible with bhnd_resource */
METHOD uint8_t read_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_read_2() compatible with bhnd_resource */
METHOD uint16_t read_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_read_4() compatible with bhnd_resource */
METHOD uint32_t read_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_write_1() compatible with bhnd_resource */
METHOD void write_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t value;
}
/** An implementation of bus_write_2() compatible with bhnd_resource */
METHOD void write_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t value;
}
/** An implementation of bus_write_4() compatible with bhnd_resource */
METHOD void write_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t value;
}
/** An implementation of bus_read_stream_1() compatible with bhnd_resource */
METHOD uint8_t read_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_read_stream_2() compatible with bhnd_resource */
METHOD uint16_t read_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_read_stream_4() compatible with bhnd_resource */
METHOD uint32_t read_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
}
/** An implementation of bus_write_stream_1() compatible with bhnd_resource */
METHOD void write_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t value;
}
/** An implementation of bus_write_stream_2() compatible with bhnd_resource */
METHOD void write_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t value;
}
/** An implementation of bus_write_stream_4() compatible with bhnd_resource */
METHOD void write_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t value;
}
/** An implementation of bus_read_multi_1() compatible with bhnd_resource */
METHOD void read_multi_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_multi_2() compatible with bhnd_resource */
METHOD void read_multi_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_multi_4() compatible with bhnd_resource */
METHOD void read_multi_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_1() compatible with bhnd_resource */
METHOD void write_multi_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_2() compatible with bhnd_resource */
METHOD void write_multi_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_4() compatible with bhnd_resource */
METHOD void write_multi_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_multi_stream_1() compatible
* bhnd_resource */
METHOD void read_multi_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_multi_stream_2() compatible
* bhnd_resource */
METHOD void read_multi_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_multi_stream_4() compatible
* bhnd_resource */
METHOD void read_multi_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_stream_1() compatible
* bhnd_resource */
METHOD void write_multi_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_stream_2() compatible with
* bhnd_resource */
METHOD void write_multi_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_multi_stream_4() compatible with
* bhnd_resource */
METHOD void write_multi_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_set_multi_1() compatible with bhnd_resource */
METHOD void set_multi_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t value;
bus_size_t count;
}
/** An implementation of bus_set_multi_2() compatible with bhnd_resource */
METHOD void set_multi_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t value;
bus_size_t count;
}
/** An implementation of bus_set_multi_4() compatible with bhnd_resource */
METHOD void set_multi_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t value;
bus_size_t count;
}
/** An implementation of bus_set_region_1() compatible with bhnd_resource */
METHOD void set_region_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t value;
bus_size_t count;
}
/** An implementation of bus_set_region_2() compatible with bhnd_resource */
METHOD void set_region_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t value;
bus_size_t count;
}
/** An implementation of bus_set_region_4() compatible with bhnd_resource */
METHOD void set_region_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t value;
bus_size_t count;
}
/** An implementation of bus_read_region_1() compatible with bhnd_resource */
METHOD void read_region_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_region_2() compatible with bhnd_resource */
METHOD void read_region_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_region_4() compatible with bhnd_resource */
METHOD void read_region_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_region_stream_1() compatible with
* bhnd_resource */
METHOD void read_region_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_region_stream_2() compatible with
* bhnd_resource */
METHOD void read_region_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_read_region_stream_4() compatible with
* bhnd_resource */
METHOD void read_region_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_1() compatible with bhnd_resource */
METHOD void write_region_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_2() compatible with bhnd_resource */
METHOD void write_region_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_4() compatible with bhnd_resource */
METHOD void write_region_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_stream_1() compatible with
* bhnd_resource */
METHOD void write_region_stream_1 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint8_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_stream_2() compatible with
* bhnd_resource */
METHOD void write_region_stream_2 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint16_t *datap;
bus_size_t count;
}
/** An implementation of bus_write_region_stream_4() compatible with
* bhnd_resource */
METHOD void write_region_stream_4 {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
uint32_t *datap;
bus_size_t count;
}
/** An implementation of bus_barrier() compatible with bhnd_resource */
METHOD void barrier {
device_t dev;
device_t child;
struct bhnd_resource *r;
bus_size_t offset;
bus_size_t length;
int flags;
}
