svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
hat_getkpfnum(9f)
hat_getkpfnum(9F) Kernel Functions hat_getkpfnum(9F)
NAME
hat_getkpfnum - get page frame number for kernel address
SYNOPSIS
#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
pfn_t hat_getkpfnum(caddr_t addr);
INTERFACE LEVEL
This interface is obsolete. A driver devmap(9E) entry point should be
provided instead.
PARAMETERS
addr The kernel virtual address for which the page frame number is
to be returned.
DESCRIPTION
hat_getkpfnum() returns the page frame number corresponding to the ker‐
nel virtual address, addr.
addr must be a kernel virtual address which maps to device memory.
ddi_map_regs(9F) can be used to obtain this address. For example,
ddi_map_regs(9F) can be called in the driver's attach(9E) routine. The
resulting kernel virtual address can be saved by the driver (see
ddi_soft_state(9F)) and used in mmap(9E). The corresponding ddi_un‐
map_regs(9F) call can be made in the driver's detach(9E) routine. Refer
to mmap(9E) for more information.
RETURN VALUES
The page frame number corresponding to the valid, device-mapped virtual
address addr. Otherwise the return value is undefined.
CONTEXT
hat_getkpfnum() can be called only from user or kernel context.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityObsolete
SEE ALSO
attach(9E), detach(9E), devmap(9E), mmap(9E), ddi_map_regs(9F),
ddi_soft_state(9F), ddi_unmap_regs(9F)
Writing Device Drivers in Oracle Solaris 11.4
NOTES
For some devices, mapping device memory in the driver's attach(9E) rou‐
tine and unmapping device memory in the driver's detach(9E) routine is
a sizable drain on system resources. This is especially true for de‐
vices with a large amount of physical address space. Refer to mmap(9E)
for alternative methods.
Oracle Solaris 11.4 11 May 2021 hat_getkpfnum(9F)