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ddi_dev_regsize(9f) [sunos man page]

ddi_dev_regsize(9F)					   Kernel Functions for Drivers 				       ddi_dev_regsize(9F)

NAME
ddi_dev_regsize - return the size of a device's register SYNOPSIS
#include <sys/conf.h> #include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dev_regsize(dev_info_t *dip, uint_t rnumber, off_t *resultp); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
dip A pointer to the device's dev_info structure. rnumber The ordinal register number. Device registers are associated with a dev_info and are enumerated in arbitrary sets from 0 on up. The number of registers a device has can be determined from a call to ddi_dev_nregs(9F). resultp Pointer to an integer that holds the size, in bytes, of the described register (if it exists). DESCRIPTION
ddi_dev_regsize() returns the size, in bytes, of the device register specified by dip and rnumber. This is useful when, for example, one of the registers is a frame buffer with a varying size known only to its proms. RETURN VALUES
ddi_dev_regsize() returns: DDI_SUCCESS A successful return. The size, in bytes, of the specified register, is set in resultp. DDI_FAILURE An invalid (nonexistent) register number was specified. CONTEXT
ddi_dev_regsize() can be called from user or interrupt context. SEE ALSO
ddi_dev_nintrs(9F), ddi_dev_nregs(9F) Writing Device Drivers SunOS 5.10 24 Oct 1991 ddi_dev_regsize(9F)

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ddi_dev_regsize(9F)					   Kernel Functions for Drivers 				       ddi_dev_regsize(9F)

NAME
ddi_dev_regsize - return the size of a device's register SYNOPSIS
#include <sys/conf.h> #include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dev_regsize(dev_info_t *dip, uint_t rnumber, off_t *resultp); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
dip A pointer to the device's dev_info structure. rnumber The ordinal register number. Device registers are associated with a dev_info and are enumerated in arbitrary sets from 0 on up. The number of registers a device has can be determined from a call to ddi_dev_nregs(9F). resultp Pointer to an integer that holds the size, in bytes, of the described register (if it exists). DESCRIPTION
The ddi_dev_regsize() function returns the size, in bytes, of the device register specified by dip and rnumber. This is useful when, for example, one of the registers is a frame buffer with a varying size known only to its proms. RETURN VALUES
The ddi_dev_regsize() function returns: DDI_SUCCESS A successful return. The size, in bytes, of the specified register, is set in resultp. DDI_FAILURE An invalid (nonexistent) register number was specified. CONTEXT
The ddi_dev_regsize() function can be called from user, interrupt, or kernel context. SEE ALSO
ddi_dev_nintrs(9F), ddi_dev_nregs(9F) Writing Device Drivers SunOS 5.11 16 Jan 2006 ddi_dev_regsize(9F)
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