L2LPERCTL
(1 << (L2LPERCTL - (bmp->db_agheight << 1))) / bmp->db_agwidth;
(bmp->db_agheight < 0) || (bmp->db_agheight > (L2LPERCTL >> 1)) ||
(bmp->db_agwidth > (1 << (L2LPERCTL - (bmp->db_agheight << 1)))) ||
bmp->db_agl2size - (L2BPERDMAP + bmp->db_aglevel * L2LPERCTL);
dcp->l2nleafs = cpu_to_le32(L2LPERCTL);
dcp->budmin = L2BPERDMAP + L2LPERCTL * level;
(((b) & (((s64)1 << ((m) + L2LPERCTL)) - 1)) >> (m))
#define L2MAXL0SIZE (L2BPERDMAP + 1 * L2LPERCTL)
#define L2MAXL1SIZE (L2BPERDMAP + 2 * L2LPERCTL)
#define L2MAXL2SIZE (L2BPERDMAP + 3 * L2LPERCTL)