static void uhci_fill_queue(UHCIState *s, UHCI_TD *td) { uint32_t int_mask = 0; uint32_t plink = td->link; uint32_t token = uhci_queue_token(td); UHCI_TD ptd; int ret; while (is_valid(plink)) { pci_dma_read(&s->dev, plink & ~0xf, &ptd, sizeof(ptd)); le32_to_cpus(&ptd.link); le32_to_cpus(&ptd.ctrl); le32_to_cpus(&ptd.token); le32_to_cpus(&ptd.buffer); if (!(ptd.ctrl & TD_CTRL_ACTIVE)) { break; } if (uhci_queue_token(&ptd) != token) { break; } trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token); ret = uhci_handle_td(s, plink, &ptd, &int_mask, true); if (ret == TD_RESULT_ASYNC_CONT) { break; } assert(ret == TD_RESULT_ASYNC_START); assert(int_mask == 0); if (ptd.ctrl & TD_CTRL_SPD) { break; } plink = ptd.link; } }