ISP_L1PT_OFFSET
#define ISP_L1PT_MASK (~((1U << ISP_L1PT_OFFSET) - 1))
>> ISP_L1PT_OFFSET)
((l1_idx) << ISP_L1PT_OFFSET) | \
l1_aligned = (ptr & ISP_PAGE_MASK) + (1U << ISP_L1PT_OFFSET);
l1_aligned = (ptr & ISP_PAGE_MASK) + (1U << ISP_L1PT_OFFSET);