OHCI_PAGE
bp0 = OHCI_PAGE(buf);
OHCI_PAGE(buf + noffs) > bp0 + OHCI_PAGE_SIZE) { /* too many page crossings */
bp0 = OHCI_PAGE(buf + offs);
dataphysend = OHCI_PAGE(dataphys + len - 1);
if (OHCI_PAGE(dataphys) == dataphysend ||
OHCI_PAGE(dataphys) + OHCI_PAGE_SIZE == dataphysend) {