PCI_BUF_LINE_SIZE_IN_BYTES
pci_buf_size_in_lines = dev_data->bus.pci_buf.size / PCI_BUF_LINE_SIZE_IN_BYTES;
if ((next_wr_byte_offset % PCI_BUF_LINE_SIZE_IN_BYTES) || next_wr_byte_offset > dev_data->bus.pci_buf.size)
next_wr_line_offset = next_wr_byte_offset / PCI_BUF_LINE_SIZE_IN_BYTES;