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identify(9e) [opensolaris man page]

identify(9E)							Driver Entry Points						      identify(9E)

identify - determine if a driver is associated with a device INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). This entry point is no longer supported. nulldev(9F) must be specified in the dev_ops(9S) structure. SEE ALSO
nulldev(9F), dev_ops(9S) ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Stability Level |Obsolete | +-----------------------------+-----------------------------+ WARNING
For Solaris 10 and later versions, drivers must remove the identify(9e) implementation to recompile. Otherwise, the compiler generates errors about DDI_IDENTIFIED and DDI_NOT_IDENTIFIED. SunOS 5.11 11 Apr 2003 identify(9E)

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probe(9E)							Driver Entry Points							 probe(9E)

probe - determine if a non-self-identifying device is present SYNOPSIS
#include <sys/conf.h> #include <sys/ddi.h> #include <sys/sunddi.h> static intprefixprobe(dev_info_t *dip); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). This entry point is required for non-self-identifying devices. You must write it for such devices. For self-identifying devices, nulldev(9F) should be specified in the dev_ops(9S) structure if a probe routine is not necessary. ARGUMENTS
dip Pointer to the device's dev_info structure. DESCRIPTION
probe() determines whether the device corresponding to dip actually exists and is a valid device for this driver. probe() is called after identify(9E) and before attach(9E) for a given dip. For example, the probe() routine can map the device registers using ddi_map_regs(9F) then attempt to access the hardware using ddi_peek(9F) or ddi_poke(9F) and determine if the device exists. Then the device registers should be unmapped using ddi_unmap_regs(9F). To probe a device that was left powered off after the last detach(), it might be necessary to power it up. If so, the driver must power up the device by accessing device registers directly. pm_raise_power(9F) will be not be available until attach(9E). The framework ensures that the ancestors of the node being probed and all relevant platform-specific power management hardware is at full power at the time that probe() is called. probe() should only probe the device. It should not change any software state and should not create any software state. Device initializa- tion should be done in attach(9E). For a self-identifying device, this entry point is not necessary. However, if a device exists in both self-identifying and non-self-iden- tifying forms, a probe() routine can be provided to simplify the driver. ddi_dev_is_sid(9F) can then be used to determine whether probe() needs to do any work. See ddi_dev_is_sid(9F) for an example. RETURN VALUES
"small and bold">DDI_PROIf_theCprobe was successful. DDI_PROBE_FAILURE If the probe failed. DDI_PROBE_DONTCARE If the probe was unsuccessful, yet attach(9E) should still be called. DDI_PROBE_PARTIAL If the instance is not present now, but may be present in the future. SEE ALSO
attach(9E), identify(9E), ddi_dev_is_sid(9F), ddi_map_regs(9F), ddi_peek(9F), ddi_poke(9F), nulldev(9F), dev_ops(9S) Writing Device Drivers SunOS 5.10 18 Nov 1992 probe(9E)
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