lv1_allocate_io_segment (116)

Allocate an io segment.

kboot Call

result = lv1_allocate_io_segment( /*IN*/ ioas_id, segment_size, io_page_size, /*OUT*/ &ioif_addr );

Parameters

Inputs
Register	Description
R3	ioas_id - io address space id
R4	segment_size - io segment size
R5	io_page_size - io page size, 0xC, 0×10, 0×14
Outputs
Register	Description
R3	Status - 0 = OK, Other values are unknown, but indicate failure.
R4	ioif_addr - io interface address

Notes:

Code taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)

ret64 = lv1_allocate_io_segment(0,           /* io space */
    IO_SEGMENTSIZE, /* segment size */
    IO_PAGESIZE_SHIFT, /* io page size */
    &(ioif_map_info_array[current_segment].ioif_addr));