unsigned long SLOF_bm_allocator_init(unsigned long start, unsigned long size,
unsigned long blocksize)
{
struct bitmap *bm;
unsigned long alloc_size, bm_size, n_bits;
dprintf("enter start %x, size %d, block-size %d\n", start, size, blocksize);
if (!size)
return 0;
if (!blocksize)
blocksize = DEFAULT_BLOCK_SIZE;
n_bits = BM_NUM_BITS(size, blocksize);
bm_size = (n_bits / BM_WORD_BITS) + ((n_bits % BM_WORD_BITS)? 1 : 0);
alloc_size = sizeof(struct bitmap) + bm_size * BM_WORD_SIZE;
dprintf("Size %ld, blocksize %ld, bm_size %ld, alloc_size %ld\n",
size, blocksize, bm_size, alloc_size);
bm = (struct bitmap *) SLOF_alloc_mem(alloc_size);
if (!bm)
return 0;
bm->start = start;
bm->size = size;
bm->bm_size = bm_size;
bm->block_size = blocksize;
bm->free_blocks = n_bits;
memset(bm->bmw, 0xFF, bm_size*BM_WORD_SIZE);
return (unsigned long)bm;
}
void *SLOF_alloc_mem_aligned(long align, long size)
{
unsigned long addr = (unsigned long)SLOF_alloc_mem(size + align - 1);
addr = addr + align - 1;
addr = addr & ~(align - 1);
return (void *)addr;
}
