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Document multi variants of *prop_alloc functions

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Add documentation and symlinks for OF_getprop_alloc_multi
and OF_getencprop_alloc_multi functions.

Also while here fix copy-pasted .Dt value and add one more
failure condition for OF_getencprop_alloc.
This commit is contained in:
Oleksandr Tymoshenko 2018-06-23 20:05:07 +00:00
parent 65769339cb
commit 80cb7cd44c
2 changed files with 70 additions and 6 deletions
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2
share/man/man9/Makefile
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@ -1540,7 +1540,9 @@ MLINKS+=OF_device_from_xref.9 OF_device_register_xref.9 \
OF_device_from_xref.9 OF_xref_from_device.9
MLINKS+=OF_getprop.9 OF_getencprop.9 \
OF_getprop.9 OF_getencprop_alloc.9 \
OF_getprop.9 OF_getencprop_alloc_multi.9 \
OF_getprop.9 OF_getprop_alloc.9 \
OF_getprop.9 OF_getprop_alloc_multi.9 \
OF_getprop.9 OF_getproplen.9 \
OF_getprop.9 OF_hasprop.9 \
OF_getprop.9 OF_nextprop.9 \

74
share/man/man9/OF_getprop.9
View File

@ -25,8 +25,8 @@
.\"
.\" $FreeBSD$
.\"
.Dd April 9, 2018
.Dt OF_CHILD 9
.Dd June 23, 2018
.Dt OF_GETPROP 9
.Os
.Sh NAME
.Nm OF_getprop ,
@ -37,6 +37,8 @@
.Nm OF_searchencprop ,
.Nm OF_getprop_alloc ,
.Nm OF_getencprop_alloc ,
.Nm OF_getprop_alloc_multi ,
.Nm OF_getencprop_alloc_multi ,
.Nm OF_prop_free ,
.Nm OF_nextprop ,
.Nm OF_setprop
@ -66,6 +68,12 @@
.Ft ssize_t
.Fn OF_getencprop_alloc "phandle_t node" "const char *propname" \
"pcell_t **buf"
.Ft ssize_t
.Fn OF_getprop_alloc_multi "phandle_t node" "const char *propname" \
"int elsz" "void **buf"
.Ft ssize_t
.Fn OF_getencprop_alloc_multi "phandle_t node" "const char *propname" \
"int elsz" "pcell_t **buf"
.Ft void
.Fn OF_prop_free "void *buf"
.Ft int
@ -204,7 +212,60 @@ If the property has zero-length value,
.Fa *buf
is set to NULL.
Returns -1 if the property does not exist or
memory allocation failed.
memory allocation failed or the size of the value is not
divisible by a cell size (4 bytes).
Allocated memory should be released when no longer required
by calling
.Fn OF_prop_free .
The function might sleep when allocating memory.
.Pp
.Fn OF_getprop_alloc_multi
allocates memory large enough to hold the
value associated with the property
.Fa propname
of the device node
.Fa node
and copies the value into the newly allocated memory region.
The value is expected to be an array of zero or more elements
.Fa elsz
bytes long.
Returns the number of elements in the value and stores
the address of the allocated memory in
.Fa *buf .
If the property has a zero-sized value
.Fa *buf
is set NULL.
Returns -1 if the property does not exist or
memory allocation failed or the size of the value is not
divisible by
.Fa elsz .
Allocated memory should be released when no longer required
by calling
.Fn OF_prop_free .
The function might sleep when allocating memory.
.Pp
.Fn OF_getencprop_alloc_multi
allocates memory large enough to hold the
value associated with the property
.Fa propname
of the device node
.Fa node
and copies the value into the newly allocated memory region, and
then converts cell values from big-endian to host byte
order.
The value is expected to be an array of zero or more elements
.Fa elsz
bytes long.
Returns the number of elements in the value and stores
the address of the allocated memory in
.Fa *buf .
If the property has a zero-sized value
.Fa *buf
is set NULL.
Returns -1 if the property does not exist or
memory allocation failed or the size of the value is not
divisible by
.Fa elsz .
Allocated memory should be released when no longer required
by calling
.Fn OF_prop_free .
@ -214,9 +275,10 @@ The function might sleep when allocating memory.
releases memory at
.Fa buf
that was allocated by
.Fn OF_getprop_alloc
or
.Fn OF_getencprop_alloc .
.Fn OF_getprop_alloc ,
.Fn OF_getencprop_alloc ,
.Fn OF_getprop_alloc_multi ,
.Fn OF_getencprop_alloc_multi .
.Pp
.Fn OF_nextprop
copies a maximum of