2 * QEMU USB EHCI Emulation
4 * Copyright(c) 2008 Emutex Ltd. (address@hidden)
5 * Copyright(c) 2011-2012 Red Hat, Inc.
11 * EHCI project was started by Mark Burkley, with contributions by
12 * Niels de Vos. David S. Ahern continued working on it. Kevin Wolf,
13 * Jan Kiszka and Vincent Palatin contributed bugfixes.
16 * This library is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU Lesser General Public
18 * License as published by the Free Software Foundation; either
19 * version 2 of the License, or(at your option) any later version.
21 * This library is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
24 * Lesser General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, see <http://www.gnu.org/licenses/>.
30 #include "hw/usb/ehci-regs.h"
31 #include "hw/usb/hcd-ehci.h"
34 #define FRAME_TIMER_FREQ 1000
35 #define FRAME_TIMER_NS (NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ)
36 #define UFRAME_TIMER_NS (FRAME_TIMER_NS / 8)
38 #define NB_MAXINTRATE 8 // Max rate at which controller issues ints
39 #define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction
40 #define MAX_QH 100 // Max allowable queue heads in a chain
41 #define MIN_UFR_PER_TICK 24 /* Min frames to process when catching up */
42 #define PERIODIC_ACTIVE 512 /* Micro-frames */
44 /* Internal periodic / asynchronous schedule state machine states
51 /* The following states are internal to the state machine function
65 /* macros for accessing fields within next link pointer entry */
66 #define NLPTR_GET(x) ((x) & 0xffffffe0)
67 #define NLPTR_TYPE_GET(x) (((x) >> 1) & 3)
68 #define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid
70 /* link pointer types */
71 #define NLPTR_TYPE_ITD 0 // isoc xfer descriptor
72 #define NLPTR_TYPE_QH 1 // queue head
73 #define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor
74 #define NLPTR_TYPE_FSTN 3 // frame span traversal node
76 #define SET_LAST_RUN_CLOCK(s) \
77 (s)->last_run_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
79 /* nifty macros from Arnon's EHCI version */
80 #define get_field(data, field) \
81 (((data) & field##_MASK) >> field##_SH)
83 #define set_field(data, newval, field) do { \
84 uint32_t val = *data; \
85 val &= ~ field##_MASK; \
86 val |= ((newval) << field##_SH) & field##_MASK; \
90 static const char *ehci_state_names[] = {
91 [EST_INACTIVE] = "INACTIVE",
92 [EST_ACTIVE] = "ACTIVE",
93 [EST_EXECUTING] = "EXECUTING",
94 [EST_SLEEPING] = "SLEEPING",
95 [EST_WAITLISTHEAD] = "WAITLISTHEAD",
96 [EST_FETCHENTRY] = "FETCH ENTRY",
97 [EST_FETCHQH] = "FETCH QH",
98 [EST_FETCHITD] = "FETCH ITD",
99 [EST_ADVANCEQUEUE] = "ADVANCEQUEUE",
100 [EST_FETCHQTD] = "FETCH QTD",
101 [EST_EXECUTE] = "EXECUTE",
102 [EST_WRITEBACK] = "WRITEBACK",
103 [EST_HORIZONTALQH] = "HORIZONTALQH",
106 static const char *ehci_mmio_names[] = {
109 [USBINTR] = "USBINTR",
110 [FRINDEX] = "FRINDEX",
111 [PERIODICLISTBASE] = "P-LIST BASE",
112 [ASYNCLISTADDR] = "A-LIST ADDR",
113 [CONFIGFLAG] = "CONFIGFLAG",
116 static int ehci_state_executing(EHCIQueue *q);
117 static int ehci_state_writeback(EHCIQueue *q);
118 static int ehci_state_advqueue(EHCIQueue *q);
119 static int ehci_fill_queue(EHCIPacket *p);
120 static void ehci_free_packet(EHCIPacket *p);
122 static const char *nr2str(const char **n, size_t len, uint32_t nr)
124 if (nr < len && n[nr] != NULL) {
131 static const char *state2str(uint32_t state)
133 return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
136 static const char *addr2str(hwaddr addr)
138 return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
141 static void ehci_trace_usbsts(uint32_t mask, int state)
144 if (mask & USBSTS_INT) {
145 trace_usb_ehci_usbsts("INT", state);
147 if (mask & USBSTS_ERRINT) {
148 trace_usb_ehci_usbsts("ERRINT", state);
150 if (mask & USBSTS_PCD) {
151 trace_usb_ehci_usbsts("PCD", state);
153 if (mask & USBSTS_FLR) {
154 trace_usb_ehci_usbsts("FLR", state);
156 if (mask & USBSTS_HSE) {
157 trace_usb_ehci_usbsts("HSE", state);
159 if (mask & USBSTS_IAA) {
160 trace_usb_ehci_usbsts("IAA", state);
164 if (mask & USBSTS_HALT) {
165 trace_usb_ehci_usbsts("HALT", state);
167 if (mask & USBSTS_REC) {
168 trace_usb_ehci_usbsts("REC", state);
170 if (mask & USBSTS_PSS) {
171 trace_usb_ehci_usbsts("PSS", state);
173 if (mask & USBSTS_ASS) {
174 trace_usb_ehci_usbsts("ASS", state);
178 static inline void ehci_set_usbsts(EHCIState *s, int mask)
180 if ((s->usbsts & mask) == mask) {
183 ehci_trace_usbsts(mask, 1);
187 static inline void ehci_clear_usbsts(EHCIState *s, int mask)
189 if ((s->usbsts & mask) == 0) {
192 ehci_trace_usbsts(mask, 0);
196 /* update irq line */
197 static inline void ehci_update_irq(EHCIState *s)
201 if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
205 trace_usb_ehci_irq(level, s->frindex, s->usbsts, s->usbintr);
206 qemu_set_irq(s->irq, level);
209 /* flag interrupt condition */
210 static inline void ehci_raise_irq(EHCIState *s, int intr)
212 if (intr & (USBSTS_PCD | USBSTS_FLR | USBSTS_HSE)) {
216 s->usbsts_pending |= intr;
221 * Commit pending interrupts (added via ehci_raise_irq),
222 * at the rate allowed by "Interrupt Threshold Control".
224 static inline void ehci_commit_irq(EHCIState *s)
228 if (!s->usbsts_pending) {
231 if (s->usbsts_frindex > s->frindex) {
235 itc = (s->usbcmd >> 16) & 0xff;
236 s->usbsts |= s->usbsts_pending;
237 s->usbsts_pending = 0;
238 s->usbsts_frindex = s->frindex + itc;
242 static void ehci_update_halt(EHCIState *s)
244 if (s->usbcmd & USBCMD_RUNSTOP) {
245 ehci_clear_usbsts(s, USBSTS_HALT);
247 if (s->astate == EST_INACTIVE && s->pstate == EST_INACTIVE) {
248 ehci_set_usbsts(s, USBSTS_HALT);
253 static void ehci_set_state(EHCIState *s, int async, int state)
256 trace_usb_ehci_state("async", state2str(state));
258 if (s->astate == EST_INACTIVE) {
259 ehci_clear_usbsts(s, USBSTS_ASS);
262 ehci_set_usbsts(s, USBSTS_ASS);
265 trace_usb_ehci_state("periodic", state2str(state));
267 if (s->pstate == EST_INACTIVE) {
268 ehci_clear_usbsts(s, USBSTS_PSS);
271 ehci_set_usbsts(s, USBSTS_PSS);
276 static int ehci_get_state(EHCIState *s, int async)
278 return async ? s->astate : s->pstate;
281 static void ehci_set_fetch_addr(EHCIState *s, int async, uint32_t addr)
284 s->a_fetch_addr = addr;
286 s->p_fetch_addr = addr;
290 static int ehci_get_fetch_addr(EHCIState *s, int async)
292 return async ? s->a_fetch_addr : s->p_fetch_addr;
295 static void ehci_trace_qh(EHCIQueue *q, hwaddr addr, EHCIqh *qh)
297 /* need three here due to argument count limits */
298 trace_usb_ehci_qh_ptrs(q, addr, qh->next,
299 qh->current_qtd, qh->next_qtd, qh->altnext_qtd);
300 trace_usb_ehci_qh_fields(addr,
301 get_field(qh->epchar, QH_EPCHAR_RL),
302 get_field(qh->epchar, QH_EPCHAR_MPLEN),
303 get_field(qh->epchar, QH_EPCHAR_EPS),
304 get_field(qh->epchar, QH_EPCHAR_EP),
305 get_field(qh->epchar, QH_EPCHAR_DEVADDR));
306 trace_usb_ehci_qh_bits(addr,
307 (bool)(qh->epchar & QH_EPCHAR_C),
308 (bool)(qh->epchar & QH_EPCHAR_H),
309 (bool)(qh->epchar & QH_EPCHAR_DTC),
310 (bool)(qh->epchar & QH_EPCHAR_I));
313 static void ehci_trace_qtd(EHCIQueue *q, hwaddr addr, EHCIqtd *qtd)
315 /* need three here due to argument count limits */
316 trace_usb_ehci_qtd_ptrs(q, addr, qtd->next, qtd->altnext);
317 trace_usb_ehci_qtd_fields(addr,
318 get_field(qtd->token, QTD_TOKEN_TBYTES),
319 get_field(qtd->token, QTD_TOKEN_CPAGE),
320 get_field(qtd->token, QTD_TOKEN_CERR),
321 get_field(qtd->token, QTD_TOKEN_PID));
322 trace_usb_ehci_qtd_bits(addr,
323 (bool)(qtd->token & QTD_TOKEN_IOC),
324 (bool)(qtd->token & QTD_TOKEN_ACTIVE),
325 (bool)(qtd->token & QTD_TOKEN_HALT),
326 (bool)(qtd->token & QTD_TOKEN_BABBLE),
327 (bool)(qtd->token & QTD_TOKEN_XACTERR));
330 static void ehci_trace_itd(EHCIState *s, hwaddr addr, EHCIitd *itd)
332 trace_usb_ehci_itd(addr, itd->next,
333 get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT),
334 get_field(itd->bufptr[2], ITD_BUFPTR_MULT),
335 get_field(itd->bufptr[0], ITD_BUFPTR_EP),
336 get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR));
339 static void ehci_trace_sitd(EHCIState *s, hwaddr addr,
342 trace_usb_ehci_sitd(addr, sitd->next,
343 (bool)(sitd->results & SITD_RESULTS_ACTIVE));
346 static void ehci_trace_guest_bug(EHCIState *s, const char *message)
348 trace_usb_ehci_guest_bug(message);
349 fprintf(stderr, "ehci warning: %s\n", message);
352 static inline bool ehci_enabled(EHCIState *s)
354 return s->usbcmd & USBCMD_RUNSTOP;
357 static inline bool ehci_async_enabled(EHCIState *s)
359 return ehci_enabled(s) && (s->usbcmd & USBCMD_ASE);
362 static inline bool ehci_periodic_enabled(EHCIState *s)
364 return ehci_enabled(s) && (s->usbcmd & USBCMD_PSE);
367 /* Get an array of dwords from main memory */
368 static inline int get_dwords(EHCIState *ehci, uint32_t addr,
369 uint32_t *buf, int num)
374 ehci_raise_irq(ehci, USBSTS_HSE);
375 ehci->usbcmd &= ~USBCMD_RUNSTOP;
376 trace_usb_ehci_dma_error();
380 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
381 dma_memory_read(ehci->as, addr, buf, sizeof(*buf));
382 *buf = le32_to_cpu(*buf);
388 /* Put an array of dwords in to main memory */
389 static inline int put_dwords(EHCIState *ehci, uint32_t addr,
390 uint32_t *buf, int num)
395 ehci_raise_irq(ehci, USBSTS_HSE);
396 ehci->usbcmd &= ~USBCMD_RUNSTOP;
397 trace_usb_ehci_dma_error();
401 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
402 uint32_t tmp = cpu_to_le32(*buf);
403 dma_memory_write(ehci->as, addr, &tmp, sizeof(tmp));
409 static int ehci_get_pid(EHCIqtd *qtd)
411 switch (get_field(qtd->token, QTD_TOKEN_PID)) {
413 return USB_TOKEN_OUT;
417 return USB_TOKEN_SETUP;
419 fprintf(stderr, "bad token\n");
424 static bool ehci_verify_qh(EHCIQueue *q, EHCIqh *qh)
426 uint32_t devaddr = get_field(qh->epchar, QH_EPCHAR_DEVADDR);
427 uint32_t endp = get_field(qh->epchar, QH_EPCHAR_EP);
428 if ((devaddr != get_field(q->qh.epchar, QH_EPCHAR_DEVADDR)) ||
429 (endp != get_field(q->qh.epchar, QH_EPCHAR_EP)) ||
430 (qh->current_qtd != q->qh.current_qtd) ||
431 (q->async && qh->next_qtd != q->qh.next_qtd) ||
432 (memcmp(&qh->altnext_qtd, &q->qh.altnext_qtd,
433 7 * sizeof(uint32_t)) != 0) ||
434 (q->dev != NULL && q->dev->addr != devaddr)) {
441 static bool ehci_verify_qtd(EHCIPacket *p, EHCIqtd *qtd)
443 if (p->qtdaddr != p->queue->qtdaddr ||
444 (p->queue->async && !NLPTR_TBIT(p->qtd.next) &&
445 (p->qtd.next != qtd->next)) ||
446 (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd->altnext)) ||
447 p->qtd.token != qtd->token ||
448 p->qtd.bufptr[0] != qtd->bufptr[0]) {
455 static bool ehci_verify_pid(EHCIQueue *q, EHCIqtd *qtd)
457 int ep = get_field(q->qh.epchar, QH_EPCHAR_EP);
458 int pid = ehci_get_pid(qtd);
460 /* Note the pid changing is normal for ep 0 (the control ep) */
461 if (q->last_pid && ep != 0 && pid != q->last_pid) {
468 /* Finish executing and writeback a packet outside of the regular
469 fetchqh -> fetchqtd -> execute -> writeback cycle */
470 static void ehci_writeback_async_complete_packet(EHCIPacket *p)
472 EHCIQueue *q = p->queue;
477 /* Verify the qh + qtd, like we do when going through fetchqh & fetchqtd */
478 get_dwords(q->ehci, NLPTR_GET(q->qhaddr),
479 (uint32_t *) &qh, sizeof(EHCIqh) >> 2);
480 get_dwords(q->ehci, NLPTR_GET(q->qtdaddr),
481 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2);
482 if (!ehci_verify_qh(q, &qh) || !ehci_verify_qtd(p, &qtd)) {
483 p->async = EHCI_ASYNC_INITIALIZED;
488 state = ehci_get_state(q->ehci, q->async);
489 ehci_state_executing(q);
490 ehci_state_writeback(q); /* Frees the packet! */
491 if (!(q->qh.token & QTD_TOKEN_HALT)) {
492 ehci_state_advqueue(q);
494 ehci_set_state(q->ehci, q->async, state);
497 /* packet management */
499 static EHCIPacket *ehci_alloc_packet(EHCIQueue *q)
503 p = g_new0(EHCIPacket, 1);
505 usb_packet_init(&p->packet);
506 QTAILQ_INSERT_TAIL(&q->packets, p, next);
507 trace_usb_ehci_packet_action(p->queue, p, "alloc");
511 static void ehci_free_packet(EHCIPacket *p)
513 if (p->async == EHCI_ASYNC_FINISHED &&
514 !(p->queue->qh.token & QTD_TOKEN_HALT)) {
515 ehci_writeback_async_complete_packet(p);
518 trace_usb_ehci_packet_action(p->queue, p, "free");
519 if (p->async == EHCI_ASYNC_INFLIGHT) {
520 usb_cancel_packet(&p->packet);
522 if (p->async == EHCI_ASYNC_FINISHED &&
523 p->packet.status == USB_RET_SUCCESS) {
525 "EHCI: Dropping completed packet from halted %s ep %02X\n",
526 (p->pid == USB_TOKEN_IN) ? "in" : "out",
527 get_field(p->queue->qh.epchar, QH_EPCHAR_EP));
529 if (p->async != EHCI_ASYNC_NONE) {
530 usb_packet_unmap(&p->packet, &p->sgl);
531 qemu_sglist_destroy(&p->sgl);
533 QTAILQ_REMOVE(&p->queue->packets, p, next);
534 usb_packet_cleanup(&p->packet);
538 /* queue management */
540 static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, uint32_t addr, int async)
542 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
545 q = g_malloc0(sizeof(*q));
549 QTAILQ_INIT(&q->packets);
550 QTAILQ_INSERT_HEAD(head, q, next);
551 trace_usb_ehci_queue_action(q, "alloc");
555 static void ehci_queue_stopped(EHCIQueue *q)
557 int endp = get_field(q->qh.epchar, QH_EPCHAR_EP);
559 if (!q->last_pid || !q->dev) {
563 usb_device_ep_stopped(q->dev, usb_ep_get(q->dev, q->last_pid, endp));
566 static int ehci_cancel_queue(EHCIQueue *q)
571 p = QTAILQ_FIRST(&q->packets);
576 trace_usb_ehci_queue_action(q, "cancel");
580 } while ((p = QTAILQ_FIRST(&q->packets)) != NULL);
583 ehci_queue_stopped(q);
587 static int ehci_reset_queue(EHCIQueue *q)
591 trace_usb_ehci_queue_action(q, "reset");
592 packets = ehci_cancel_queue(q);
599 static void ehci_free_queue(EHCIQueue *q, const char *warn)
601 EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
604 trace_usb_ehci_queue_action(q, "free");
605 cancelled = ehci_cancel_queue(q);
606 if (warn && cancelled > 0) {
607 ehci_trace_guest_bug(q->ehci, warn);
609 QTAILQ_REMOVE(head, q, next);
613 static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
616 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
619 QTAILQ_FOREACH(q, head, next) {
620 if (addr == q->qhaddr) {
627 static void ehci_queues_rip_unused(EHCIState *ehci, int async)
629 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
630 const char *warn = async ? "guest unlinked busy QH" : NULL;
631 uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
634 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
637 q->ts = ehci->last_run_ns;
640 if (ehci->last_run_ns < q->ts + maxage) {
643 ehci_free_queue(q, warn);
647 static void ehci_queues_rip_unseen(EHCIState *ehci, int async)
649 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
652 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
654 ehci_free_queue(q, NULL);
659 static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
661 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
664 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
668 ehci_free_queue(q, NULL);
672 static void ehci_queues_rip_all(EHCIState *ehci, int async)
674 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
675 const char *warn = async ? "guest stopped busy async schedule" : NULL;
678 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
679 ehci_free_queue(q, warn);
683 /* Attach or detach a device on root hub */
685 static void ehci_attach(USBPort *port)
687 EHCIState *s = port->opaque;
688 uint32_t *portsc = &s->portsc[port->index];
689 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
691 trace_usb_ehci_port_attach(port->index, owner, port->dev->product_desc);
693 if (*portsc & PORTSC_POWNER) {
694 USBPort *companion = s->companion_ports[port->index];
695 companion->dev = port->dev;
696 companion->ops->attach(companion);
700 *portsc |= PORTSC_CONNECT;
701 *portsc |= PORTSC_CSC;
703 ehci_raise_irq(s, USBSTS_PCD);
706 static void ehci_detach(USBPort *port)
708 EHCIState *s = port->opaque;
709 uint32_t *portsc = &s->portsc[port->index];
710 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
712 trace_usb_ehci_port_detach(port->index, owner);
714 if (*portsc & PORTSC_POWNER) {
715 USBPort *companion = s->companion_ports[port->index];
716 companion->ops->detach(companion);
717 companion->dev = NULL;
719 * EHCI spec 4.2.2: "When a disconnect occurs... On the event,
720 * the port ownership is returned immediately to the EHCI controller."
722 *portsc &= ~PORTSC_POWNER;
726 ehci_queues_rip_device(s, port->dev, 0);
727 ehci_queues_rip_device(s, port->dev, 1);
729 *portsc &= ~(PORTSC_CONNECT|PORTSC_PED|PORTSC_SUSPEND);
730 *portsc |= PORTSC_CSC;
732 ehci_raise_irq(s, USBSTS_PCD);
735 static void ehci_child_detach(USBPort *port, USBDevice *child)
737 EHCIState *s = port->opaque;
738 uint32_t portsc = s->portsc[port->index];
740 if (portsc & PORTSC_POWNER) {
741 USBPort *companion = s->companion_ports[port->index];
742 companion->ops->child_detach(companion, child);
746 ehci_queues_rip_device(s, child, 0);
747 ehci_queues_rip_device(s, child, 1);
750 static void ehci_wakeup(USBPort *port)
752 EHCIState *s = port->opaque;
753 uint32_t *portsc = &s->portsc[port->index];
755 if (*portsc & PORTSC_POWNER) {
756 USBPort *companion = s->companion_ports[port->index];
757 if (companion->ops->wakeup) {
758 companion->ops->wakeup(companion);
763 if (*portsc & PORTSC_SUSPEND) {
764 trace_usb_ehci_port_wakeup(port->index);
765 *portsc |= PORTSC_FPRES;
766 ehci_raise_irq(s, USBSTS_PCD);
769 qemu_bh_schedule(s->async_bh);
772 static void ehci_register_companion(USBBus *bus, USBPort *ports[],
773 uint32_t portcount, uint32_t firstport,
776 EHCIState *s = container_of(bus, EHCIState, bus);
779 if (firstport + portcount > NB_PORTS) {
780 error_setg(errp, "firstport must be between 0 and %u",
781 NB_PORTS - portcount);
785 for (i = 0; i < portcount; i++) {
786 if (s->companion_ports[firstport + i]) {
787 error_setg(errp, "firstport %u asks for ports %u-%u,"
788 " but port %u has a companion assigned already",
789 firstport, firstport, firstport + portcount - 1,
795 for (i = 0; i < portcount; i++) {
796 s->companion_ports[firstport + i] = ports[i];
797 s->ports[firstport + i].speedmask |=
798 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL;
799 /* Ensure devs attached before the initial reset go to the companion */
800 s->portsc[firstport + i] = PORTSC_POWNER;
803 s->companion_count++;
804 s->caps[0x05] = (s->companion_count << 4) | portcount;
807 static void ehci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
810 EHCIState *s = container_of(bus, EHCIState, bus);
811 uint32_t portsc = s->portsc[ep->dev->port->index];
813 if (portsc & PORTSC_POWNER) {
817 s->periodic_sched_active = PERIODIC_ACTIVE;
818 qemu_bh_schedule(s->async_bh);
821 static USBDevice *ehci_find_device(EHCIState *ehci, uint8_t addr)
827 for (i = 0; i < NB_PORTS; i++) {
828 port = &ehci->ports[i];
829 if (!(ehci->portsc[i] & PORTSC_PED)) {
830 DPRINTF("Port %d not enabled\n", i);
833 dev = usb_find_device(port, addr);
841 /* 4.1 host controller initialization */
842 void ehci_reset(void *opaque)
844 EHCIState *s = opaque;
846 USBDevice *devs[NB_PORTS];
848 trace_usb_ehci_reset();
851 * Do the detach before touching portsc, so that it correctly gets send to
852 * us or to our companion based on PORTSC_POWNER before the reset.
854 for(i = 0; i < NB_PORTS; i++) {
855 devs[i] = s->ports[i].dev;
856 if (devs[i] && devs[i]->attached) {
857 usb_detach(&s->ports[i]);
861 memset(&s->opreg, 0x00, sizeof(s->opreg));
862 memset(&s->portsc, 0x00, sizeof(s->portsc));
864 s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
865 s->usbsts = USBSTS_HALT;
866 s->usbsts_pending = 0;
867 s->usbsts_frindex = 0;
869 s->astate = EST_INACTIVE;
870 s->pstate = EST_INACTIVE;
872 for(i = 0; i < NB_PORTS; i++) {
873 if (s->companion_ports[i]) {
874 s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
876 s->portsc[i] = PORTSC_PPOWER;
878 if (devs[i] && devs[i]->attached) {
879 usb_attach(&s->ports[i]);
880 usb_device_reset(devs[i]);
883 ehci_queues_rip_all(s, 0);
884 ehci_queues_rip_all(s, 1);
885 timer_del(s->frame_timer);
886 qemu_bh_cancel(s->async_bh);
889 static uint64_t ehci_caps_read(void *ptr, hwaddr addr,
893 return s->caps[addr];
896 static uint64_t ehci_opreg_read(void *ptr, hwaddr addr,
904 /* Round down to mult of 8, else it can go backwards on migration */
905 val = s->frindex & ~7;
908 val = s->opreg[addr >> 2];
911 trace_usb_ehci_opreg_read(addr + s->opregbase, addr2str(addr), val);
915 static uint64_t ehci_port_read(void *ptr, hwaddr addr,
921 val = s->portsc[addr >> 2];
922 trace_usb_ehci_portsc_read(addr + s->portscbase, addr >> 2, val);
926 static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner)
928 USBDevice *dev = s->ports[port].dev;
929 uint32_t *portsc = &s->portsc[port];
932 if (s->companion_ports[port] == NULL)
935 owner = owner & PORTSC_POWNER;
936 orig = *portsc & PORTSC_POWNER;
938 if (!(owner ^ orig)) {
942 if (dev && dev->attached) {
943 usb_detach(&s->ports[port]);
946 *portsc &= ~PORTSC_POWNER;
949 if (dev && dev->attached) {
950 usb_attach(&s->ports[port]);
954 static void ehci_port_write(void *ptr, hwaddr addr,
955 uint64_t val, unsigned size)
958 int port = addr >> 2;
959 uint32_t *portsc = &s->portsc[port];
960 uint32_t old = *portsc;
961 USBDevice *dev = s->ports[port].dev;
963 trace_usb_ehci_portsc_write(addr + s->portscbase, addr >> 2, val);
966 *portsc &= ~(val & PORTSC_RWC_MASK);
967 /* The guest may clear, but not set the PED bit */
968 *portsc &= val | ~PORTSC_PED;
969 /* POWNER is masked out by RO_MASK as it is RO when we've no companion */
970 handle_port_owner_write(s, port, val);
971 /* And finally apply RO_MASK */
972 val &= PORTSC_RO_MASK;
974 if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
975 trace_usb_ehci_port_reset(port, 1);
978 if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
979 trace_usb_ehci_port_reset(port, 0);
980 if (dev && dev->attached) {
981 usb_port_reset(&s->ports[port]);
982 *portsc &= ~PORTSC_CSC;
986 * Table 2.16 Set the enable bit(and enable bit change) to indicate
987 * to SW that this port has a high speed device attached
989 if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
994 if ((val & PORTSC_SUSPEND) && !(*portsc & PORTSC_SUSPEND)) {
995 trace_usb_ehci_port_suspend(port);
997 if (!(val & PORTSC_FPRES) && (*portsc & PORTSC_FPRES)) {
998 trace_usb_ehci_port_resume(port);
999 val &= ~PORTSC_SUSPEND;
1002 *portsc &= ~PORTSC_RO_MASK;
1004 trace_usb_ehci_portsc_change(addr + s->portscbase, addr >> 2, *portsc, old);
1007 static void ehci_opreg_write(void *ptr, hwaddr addr,
1008 uint64_t val, unsigned size)
1011 uint32_t *mmio = s->opreg + (addr >> 2);
1012 uint32_t old = *mmio;
1015 trace_usb_ehci_opreg_write(addr + s->opregbase, addr2str(addr), val);
1019 if (val & USBCMD_HCRESET) {
1025 /* not supporting dynamic frame list size at the moment */
1026 if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
1027 fprintf(stderr, "attempt to set frame list size -- value %d\n",
1028 (int)val & USBCMD_FLS);
1032 if (val & USBCMD_IAAD) {
1034 * Process IAAD immediately, otherwise the Linux IAAD watchdog may
1035 * trigger and re-use a qh without us seeing the unlink.
1037 s->async_stepdown = 0;
1038 qemu_bh_schedule(s->async_bh);
1039 trace_usb_ehci_doorbell_ring();
1042 if (((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & val) !=
1043 ((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & s->usbcmd)) {
1044 if (s->pstate == EST_INACTIVE) {
1045 SET_LAST_RUN_CLOCK(s);
1047 s->usbcmd = val; /* Set usbcmd for ehci_update_halt() */
1048 ehci_update_halt(s);
1049 s->async_stepdown = 0;
1050 qemu_bh_schedule(s->async_bh);
1055 val &= USBSTS_RO_MASK; // bits 6 through 31 are RO
1056 ehci_clear_usbsts(s, val); // bits 0 through 5 are R/WC
1062 val &= USBINTR_MASK;
1063 if (ehci_enabled(s) && (USBSTS_FLR & val)) {
1064 qemu_bh_schedule(s->async_bh);
1069 val &= 0x00003fff; /* frindex is 14bits */
1070 s->usbsts_frindex = val;
1076 for(i = 0; i < NB_PORTS; i++)
1077 handle_port_owner_write(s, i, 0);
1081 case PERIODICLISTBASE:
1082 if (ehci_periodic_enabled(s)) {
1084 "ehci: PERIODIC list base register set while periodic schedule\n"
1085 " is enabled and HC is enabled\n");
1090 if (ehci_async_enabled(s)) {
1092 "ehci: ASYNC list address register set while async schedule\n"
1093 " is enabled and HC is enabled\n");
1099 trace_usb_ehci_opreg_change(addr + s->opregbase, addr2str(addr),
1104 * Write the qh back to guest physical memory. This step isn't
1105 * in the EHCI spec but we need to do it since we don't share
1106 * physical memory with our guest VM.
1108 * The first three dwords are read-only for the EHCI, so skip them
1109 * when writing back the qh.
1111 static void ehci_flush_qh(EHCIQueue *q)
1113 uint32_t *qh = (uint32_t *) &q->qh;
1114 uint32_t dwords = sizeof(EHCIqh) >> 2;
1115 uint32_t addr = NLPTR_GET(q->qhaddr);
1117 put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
1122 static int ehci_qh_do_overlay(EHCIQueue *q)
1124 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1132 assert(p->qtdaddr == q->qtdaddr);
1134 // remember values in fields to preserve in qh after overlay
1136 dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE;
1137 ping = q->qh.token & QTD_TOKEN_PING;
1139 q->qh.current_qtd = p->qtdaddr;
1140 q->qh.next_qtd = p->qtd.next;
1141 q->qh.altnext_qtd = p->qtd.altnext;
1142 q->qh.token = p->qtd.token;
1145 eps = get_field(q->qh.epchar, QH_EPCHAR_EPS);
1146 if (eps == EHCI_QH_EPS_HIGH) {
1147 q->qh.token &= ~QTD_TOKEN_PING;
1148 q->qh.token |= ping;
1151 reload = get_field(q->qh.epchar, QH_EPCHAR_RL);
1152 set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
1154 for (i = 0; i < 5; i++) {
1155 q->qh.bufptr[i] = p->qtd.bufptr[i];
1158 if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
1159 // preserve QH DT bit
1160 q->qh.token &= ~QTD_TOKEN_DTOGGLE;
1161 q->qh.token |= dtoggle;
1164 q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
1165 q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
1172 static int ehci_init_transfer(EHCIPacket *p)
1174 uint32_t cpage, offset, bytes, plen;
1177 cpage = get_field(p->qtd.token, QTD_TOKEN_CPAGE);
1178 bytes = get_field(p->qtd.token, QTD_TOKEN_TBYTES);
1179 offset = p->qtd.bufptr[0] & ~QTD_BUFPTR_MASK;
1180 qemu_sglist_init(&p->sgl, p->queue->ehci->device, 5, p->queue->ehci->as);
1184 fprintf(stderr, "cpage out of range (%d)\n", cpage);
1188 page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;
1191 if (plen > 4096 - offset) {
1192 plen = 4096 - offset;
1197 qemu_sglist_add(&p->sgl, page, plen);
1203 static void ehci_finish_transfer(EHCIQueue *q, int len)
1205 uint32_t cpage, offset;
1208 /* update cpage & offset */
1209 cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE);
1210 offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
1213 cpage += offset >> QTD_BUFPTR_SH;
1214 offset &= ~QTD_BUFPTR_MASK;
1216 set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE);
1217 q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
1218 q->qh.bufptr[0] |= offset;
1222 static void ehci_async_complete_packet(USBPort *port, USBPacket *packet)
1225 EHCIState *s = port->opaque;
1226 uint32_t portsc = s->portsc[port->index];
1228 if (portsc & PORTSC_POWNER) {
1229 USBPort *companion = s->companion_ports[port->index];
1230 companion->ops->complete(companion, packet);
1234 p = container_of(packet, EHCIPacket, packet);
1235 assert(p->async == EHCI_ASYNC_INFLIGHT);
1237 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
1238 trace_usb_ehci_packet_action(p->queue, p, "remove");
1239 ehci_free_packet(p);
1243 trace_usb_ehci_packet_action(p->queue, p, "wakeup");
1244 p->async = EHCI_ASYNC_FINISHED;
1246 if (!p->queue->async) {
1247 s->periodic_sched_active = PERIODIC_ACTIVE;
1249 qemu_bh_schedule(s->async_bh);
1252 static void ehci_execute_complete(EHCIQueue *q)
1254 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1258 assert(p->qtdaddr == q->qtdaddr);
1259 assert(p->async == EHCI_ASYNC_INITIALIZED ||
1260 p->async == EHCI_ASYNC_FINISHED);
1262 DPRINTF("execute_complete: qhaddr 0x%x, next 0x%x, qtdaddr 0x%x, "
1263 "status %d, actual_length %d\n",
1264 q->qhaddr, q->qh.next, q->qtdaddr,
1265 p->packet.status, p->packet.actual_length);
1267 switch (p->packet.status) {
1268 case USB_RET_SUCCESS:
1270 case USB_RET_IOERROR:
1272 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
1273 set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
1274 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1277 q->qh.token |= QTD_TOKEN_HALT;
1278 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1281 set_field(&q->qh.altnext_qtd, 0, QH_ALTNEXT_NAKCNT);
1282 return; /* We're not done yet with this transaction */
1283 case USB_RET_BABBLE:
1284 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE);
1285 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1288 /* should not be triggerable */
1289 fprintf(stderr, "USB invalid response %d\n", p->packet.status);
1290 g_assert_not_reached();
1294 /* TODO check 4.12 for splits */
1295 tbytes = get_field(q->qh.token, QTD_TOKEN_TBYTES);
1296 if (tbytes && p->pid == USB_TOKEN_IN) {
1297 tbytes -= p->packet.actual_length;
1299 /* 4.15.1.2 must raise int on a short input packet */
1300 ehci_raise_irq(q->ehci, USBSTS_INT);
1302 q->ehci->int_req_by_async = true;
1308 DPRINTF("updating tbytes to %d\n", tbytes);
1309 set_field(&q->qh.token, tbytes, QTD_TOKEN_TBYTES);
1311 ehci_finish_transfer(q, p->packet.actual_length);
1312 usb_packet_unmap(&p->packet, &p->sgl);
1313 qemu_sglist_destroy(&p->sgl);
1314 p->async = EHCI_ASYNC_NONE;
1316 q->qh.token ^= QTD_TOKEN_DTOGGLE;
1317 q->qh.token &= ~QTD_TOKEN_ACTIVE;
1319 if (q->qh.token & QTD_TOKEN_IOC) {
1320 ehci_raise_irq(q->ehci, USBSTS_INT);
1322 q->ehci->int_req_by_async = true;
1327 /* 4.10.3 returns "again" */
1328 static int ehci_execute(EHCIPacket *p, const char *action)
1334 assert(p->async == EHCI_ASYNC_NONE ||
1335 p->async == EHCI_ASYNC_INITIALIZED);
1337 if (!(p->qtd.token & QTD_TOKEN_ACTIVE)) {
1338 fprintf(stderr, "Attempting to execute inactive qtd\n");
1342 if (get_field(p->qtd.token, QTD_TOKEN_TBYTES) > BUFF_SIZE) {
1343 ehci_trace_guest_bug(p->queue->ehci,
1344 "guest requested more bytes than allowed");
1348 if (!ehci_verify_pid(p->queue, &p->qtd)) {
1349 ehci_queue_stopped(p->queue); /* Mark the ep in the prev dir stopped */
1351 p->pid = ehci_get_pid(&p->qtd);
1352 p->queue->last_pid = p->pid;
1353 endp = get_field(p->queue->qh.epchar, QH_EPCHAR_EP);
1354 ep = usb_ep_get(p->queue->dev, p->pid, endp);
1356 if (p->async == EHCI_ASYNC_NONE) {
1357 if (ehci_init_transfer(p) != 0) {
1361 spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
1362 usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
1363 (p->qtd.token & QTD_TOKEN_IOC) != 0);
1364 usb_packet_map(&p->packet, &p->sgl);
1365 p->async = EHCI_ASYNC_INITIALIZED;
1368 trace_usb_ehci_packet_action(p->queue, p, action);
1369 usb_handle_packet(p->queue->dev, &p->packet);
1370 DPRINTF("submit: qh 0x%x next 0x%x qtd 0x%x pid 0x%x len %zd endp 0x%x "
1371 "status %d actual_length %d\n", p->queue->qhaddr, p->qtd.next,
1372 p->qtdaddr, p->pid, p->packet.iov.size, endp, p->packet.status,
1373 p->packet.actual_length);
1375 if (p->packet.actual_length > BUFF_SIZE) {
1376 fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
1386 static int ehci_process_itd(EHCIState *ehci,
1392 uint32_t i, len, pid, dir, devaddr, endp, xfers = 0;
1393 uint32_t pg, off, ptr1, ptr2, max, mult;
1395 ehci->periodic_sched_active = PERIODIC_ACTIVE;
1397 dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
1398 devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
1399 endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
1400 max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
1401 mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
1403 for(i = 0; i < 8; i++) {
1404 if (itd->transact[i] & ITD_XACT_ACTIVE) {
1405 pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
1406 off = itd->transact[i] & ITD_XACT_OFFSET_MASK;
1407 ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK);
1408 ptr2 = (itd->bufptr[pg+1] & ITD_BUFPTR_MASK);
1409 len = get_field(itd->transact[i], ITD_XACT_LENGTH);
1411 if (len > max * mult) {
1415 if (len > BUFF_SIZE) {
1419 qemu_sglist_init(&ehci->isgl, ehci->device, 2, ehci->as);
1420 if (off + len > 4096) {
1421 /* transfer crosses page border */
1422 uint32_t len2 = off + len - 4096;
1423 uint32_t len1 = len - len2;
1424 qemu_sglist_add(&ehci->isgl, ptr1 + off, len1);
1425 qemu_sglist_add(&ehci->isgl, ptr2, len2);
1427 qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
1430 pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
1432 dev = ehci_find_device(ehci, devaddr);
1433 ep = usb_ep_get(dev, pid, endp);
1434 if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
1435 usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
1436 (itd->transact[i] & ITD_XACT_IOC) != 0);
1437 usb_packet_map(&ehci->ipacket, &ehci->isgl);
1438 usb_handle_packet(dev, &ehci->ipacket);
1439 usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
1441 DPRINTF("ISOCH: attempt to addess non-iso endpoint\n");
1442 ehci->ipacket.status = USB_RET_NAK;
1443 ehci->ipacket.actual_length = 0;
1445 qemu_sglist_destroy(&ehci->isgl);
1447 switch (ehci->ipacket.status) {
1448 case USB_RET_SUCCESS:
1451 fprintf(stderr, "Unexpected iso usb result: %d\n",
1452 ehci->ipacket.status);
1454 case USB_RET_IOERROR:
1456 /* 3.3.2: XACTERR is only allowed on IN transactions */
1458 itd->transact[i] |= ITD_XACT_XACTERR;
1459 ehci_raise_irq(ehci, USBSTS_ERRINT);
1462 case USB_RET_BABBLE:
1463 itd->transact[i] |= ITD_XACT_BABBLE;
1464 ehci_raise_irq(ehci, USBSTS_ERRINT);
1467 /* no data for us, so do a zero-length transfer */
1468 ehci->ipacket.actual_length = 0;
1472 set_field(&itd->transact[i], len - ehci->ipacket.actual_length,
1473 ITD_XACT_LENGTH); /* OUT */
1475 set_field(&itd->transact[i], ehci->ipacket.actual_length,
1476 ITD_XACT_LENGTH); /* IN */
1478 if (itd->transact[i] & ITD_XACT_IOC) {
1479 ehci_raise_irq(ehci, USBSTS_INT);
1481 itd->transact[i] &= ~ITD_XACT_ACTIVE;
1485 return xfers ? 0 : -1;
1489 /* This state is the entry point for asynchronous schedule
1490 * processing. Entry here consitutes a EHCI start event state (4.8.5)
1492 static int ehci_state_waitlisthead(EHCIState *ehci, int async)
1497 uint32_t entry = ehci->asynclistaddr;
1499 /* set reclamation flag at start event (4.8.6) */
1501 ehci_set_usbsts(ehci, USBSTS_REC);
1504 ehci_queues_rip_unused(ehci, async);
1506 /* Find the head of the list (4.9.1.1) */
1507 for(i = 0; i < MAX_QH; i++) {
1508 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &qh,
1509 sizeof(EHCIqh) >> 2) < 0) {
1512 ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
1514 if (qh.epchar & QH_EPCHAR_H) {
1516 entry |= (NLPTR_TYPE_QH << 1);
1519 ehci_set_fetch_addr(ehci, async, entry);
1520 ehci_set_state(ehci, async, EST_FETCHENTRY);
1526 if (entry == ehci->asynclistaddr) {
1531 /* no head found for list. */
1533 ehci_set_state(ehci, async, EST_ACTIVE);
1540 /* This state is the entry point for periodic schedule processing as
1541 * well as being a continuation state for async processing.
1543 static int ehci_state_fetchentry(EHCIState *ehci, int async)
1546 uint32_t entry = ehci_get_fetch_addr(ehci, async);
1548 if (NLPTR_TBIT(entry)) {
1549 ehci_set_state(ehci, async, EST_ACTIVE);
1553 /* section 4.8, only QH in async schedule */
1554 if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
1555 fprintf(stderr, "non queue head request in async schedule\n");
1559 switch (NLPTR_TYPE_GET(entry)) {
1561 ehci_set_state(ehci, async, EST_FETCHQH);
1565 case NLPTR_TYPE_ITD:
1566 ehci_set_state(ehci, async, EST_FETCHITD);
1570 case NLPTR_TYPE_STITD:
1571 ehci_set_state(ehci, async, EST_FETCHSITD);
1576 /* TODO: handle FSTN type */
1577 fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
1578 "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
1586 static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)
1592 entry = ehci_get_fetch_addr(ehci, async);
1593 q = ehci_find_queue_by_qh(ehci, entry, async);
1595 q = ehci_alloc_queue(ehci, entry, async);
1600 /* we are going in circles -- stop processing */
1601 ehci_set_state(ehci, async, EST_ACTIVE);
1606 if (get_dwords(ehci, NLPTR_GET(q->qhaddr),
1607 (uint32_t *) &qh, sizeof(EHCIqh) >> 2) < 0) {
1611 ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &qh);
1614 * The overlay area of the qh should never be changed by the guest,
1615 * except when idle, in which case the reset is a nop.
1617 if (!ehci_verify_qh(q, &qh)) {
1618 if (ehci_reset_queue(q) > 0) {
1619 ehci_trace_guest_bug(ehci, "guest updated active QH");
1624 q->transact_ctr = get_field(q->qh.epcap, QH_EPCAP_MULT);
1625 if (q->transact_ctr == 0) { /* Guest bug in some versions of windows */
1626 q->transact_ctr = 4;
1629 if (q->dev == NULL) {
1630 q->dev = ehci_find_device(q->ehci,
1631 get_field(q->qh.epchar, QH_EPCHAR_DEVADDR));
1634 if (async && (q->qh.epchar & QH_EPCHAR_H)) {
1636 /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
1637 if (ehci->usbsts & USBSTS_REC) {
1638 ehci_clear_usbsts(ehci, USBSTS_REC);
1640 DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
1641 " - done processing\n", q->qhaddr);
1642 ehci_set_state(ehci, async, EST_ACTIVE);
1649 if (q->qhaddr != q->qh.next) {
1650 DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
1652 q->qh.epchar & QH_EPCHAR_H,
1653 q->qh.token & QTD_TOKEN_HALT,
1654 q->qh.token & QTD_TOKEN_ACTIVE,
1659 if (q->qh.token & QTD_TOKEN_HALT) {
1660 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1662 } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&
1663 (NLPTR_TBIT(q->qh.current_qtd) == 0)) {
1664 q->qtdaddr = q->qh.current_qtd;
1665 ehci_set_state(ehci, async, EST_FETCHQTD);
1668 /* EHCI spec version 1.0 Section 4.10.2 */
1669 ehci_set_state(ehci, async, EST_ADVANCEQUEUE);
1676 static int ehci_state_fetchitd(EHCIState *ehci, int async)
1682 entry = ehci_get_fetch_addr(ehci, async);
1684 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1685 sizeof(EHCIitd) >> 2) < 0) {
1688 ehci_trace_itd(ehci, entry, &itd);
1690 if (ehci_process_itd(ehci, &itd, entry) != 0) {
1694 put_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1695 sizeof(EHCIitd) >> 2);
1696 ehci_set_fetch_addr(ehci, async, itd.next);
1697 ehci_set_state(ehci, async, EST_FETCHENTRY);
1702 static int ehci_state_fetchsitd(EHCIState *ehci, int async)
1708 entry = ehci_get_fetch_addr(ehci, async);
1710 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *)&sitd,
1711 sizeof(EHCIsitd) >> 2) < 0) {
1714 ehci_trace_sitd(ehci, entry, &sitd);
1716 if (!(sitd.results & SITD_RESULTS_ACTIVE)) {
1717 /* siTD is not active, nothing to do */;
1719 /* TODO: split transfers are not implemented */
1720 fprintf(stderr, "WARNING: Skipping active siTD\n");
1723 ehci_set_fetch_addr(ehci, async, sitd.next);
1724 ehci_set_state(ehci, async, EST_FETCHENTRY);
1728 /* Section 4.10.2 - paragraph 3 */
1729 static int ehci_state_advqueue(EHCIQueue *q)
1732 /* TO-DO: 4.10.2 - paragraph 2
1733 * if I-bit is set to 1 and QH is not active
1734 * go to horizontal QH
1737 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1743 * want data and alt-next qTD is valid
1745 if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
1746 (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
1747 q->qtdaddr = q->qh.altnext_qtd;
1748 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1753 } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {
1754 q->qtdaddr = q->qh.next_qtd;
1755 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1758 * no valid qTD, try next QH
1761 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1767 /* Section 4.10.2 - paragraph 4 */
1768 static int ehci_state_fetchqtd(EHCIQueue *q)
1774 if (get_dwords(q->ehci, NLPTR_GET(q->qtdaddr), (uint32_t *) &qtd,
1775 sizeof(EHCIqtd) >> 2) < 0) {
1778 ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);
1780 p = QTAILQ_FIRST(&q->packets);
1782 if (!ehci_verify_qtd(p, &qtd)) {
1783 ehci_cancel_queue(q);
1784 if (qtd.token & QTD_TOKEN_ACTIVE) {
1785 ehci_trace_guest_bug(q->ehci, "guest updated active qTD");
1790 ehci_qh_do_overlay(q);
1794 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1795 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1796 } else if (p != NULL) {
1798 case EHCI_ASYNC_NONE:
1799 case EHCI_ASYNC_INITIALIZED:
1800 /* Not yet executed (MULT), or previously nacked (int) packet */
1801 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1803 case EHCI_ASYNC_INFLIGHT:
1804 /* Check if the guest has added new tds to the queue */
1805 again = ehci_fill_queue(QTAILQ_LAST(&q->packets, pkts_head));
1806 /* Unfinished async handled packet, go horizontal */
1807 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1809 case EHCI_ASYNC_FINISHED:
1810 /* Complete executing of the packet */
1811 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1815 p = ehci_alloc_packet(q);
1816 p->qtdaddr = q->qtdaddr;
1818 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1824 static int ehci_state_horizqh(EHCIQueue *q)
1828 if (ehci_get_fetch_addr(q->ehci, q->async) != q->qh.next) {
1829 ehci_set_fetch_addr(q->ehci, q->async, q->qh.next);
1830 ehci_set_state(q->ehci, q->async, EST_FETCHENTRY);
1833 ehci_set_state(q->ehci, q->async, EST_ACTIVE);
1839 /* Returns "again" */
1840 static int ehci_fill_queue(EHCIPacket *p)
1842 USBEndpoint *ep = p->packet.ep;
1843 EHCIQueue *q = p->queue;
1844 EHCIqtd qtd = p->qtd;
1848 if (NLPTR_TBIT(qtd.next) != 0) {
1853 * Detect circular td lists, Windows creates these, counting on the
1854 * active bit going low after execution to make the queue stop.
1856 QTAILQ_FOREACH(p, &q->packets, next) {
1857 if (p->qtdaddr == qtdaddr) {
1861 if (get_dwords(q->ehci, NLPTR_GET(qtdaddr),
1862 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2) < 0) {
1865 ehci_trace_qtd(q, NLPTR_GET(qtdaddr), &qtd);
1866 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1869 if (!ehci_verify_pid(q, &qtd)) {
1870 ehci_trace_guest_bug(q->ehci, "guest queued token with wrong pid");
1873 p = ehci_alloc_packet(q);
1874 p->qtdaddr = qtdaddr;
1876 if (ehci_execute(p, "queue") == -1) {
1879 assert(p->packet.status == USB_RET_ASYNC);
1880 p->async = EHCI_ASYNC_INFLIGHT;
1883 usb_device_flush_ep_queue(ep->dev, ep);
1887 static int ehci_state_execute(EHCIQueue *q)
1889 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1893 assert(p->qtdaddr == q->qtdaddr);
1895 if (ehci_qh_do_overlay(q) != 0) {
1899 // TODO verify enough time remains in the uframe as in 4.4.1.1
1900 // TODO write back ptr to async list when done or out of time
1902 /* 4.10.3, bottom of page 82, go horizontal on transaction counter == 0 */
1903 if (!q->async && q->transact_ctr == 0) {
1904 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1910 ehci_set_usbsts(q->ehci, USBSTS_REC);
1913 again = ehci_execute(p, "process");
1917 if (p->packet.status == USB_RET_ASYNC) {
1919 trace_usb_ehci_packet_action(p->queue, p, "async");
1920 p->async = EHCI_ASYNC_INFLIGHT;
1921 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1923 again = ehci_fill_queue(p);
1930 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1937 static int ehci_state_executing(EHCIQueue *q)
1939 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1942 assert(p->qtdaddr == q->qtdaddr);
1944 ehci_execute_complete(q);
1947 if (!q->async && q->transact_ctr > 0) {
1952 if (p->packet.status == USB_RET_NAK) {
1953 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1955 ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
1963 static int ehci_state_writeback(EHCIQueue *q)
1965 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1966 uint32_t *qtd, addr;
1969 /* Write back the QTD from the QH area */
1971 assert(p->qtdaddr == q->qtdaddr);
1973 ehci_trace_qtd(q, NLPTR_GET(p->qtdaddr), (EHCIqtd *) &q->qh.next_qtd);
1974 qtd = (uint32_t *) &q->qh.next_qtd;
1975 addr = NLPTR_GET(p->qtdaddr);
1976 put_dwords(q->ehci, addr + 2 * sizeof(uint32_t), qtd + 2, 2);
1977 ehci_free_packet(p);
1980 * EHCI specs say go horizontal here.
1982 * We can also advance the queue here for performance reasons. We
1983 * need to take care to only take that shortcut in case we've
1984 * processed the qtd just written back without errors, i.e. halt
1987 if (q->qh.token & QTD_TOKEN_HALT) {
1988 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1991 ehci_set_state(q->ehci, q->async, EST_ADVANCEQUEUE);
1998 * This is the state machine that is common to both async and periodic
2001 static void ehci_advance_state(EHCIState *ehci, int async)
2003 EHCIQueue *q = NULL;
2007 switch(ehci_get_state(ehci, async)) {
2008 case EST_WAITLISTHEAD:
2009 again = ehci_state_waitlisthead(ehci, async);
2012 case EST_FETCHENTRY:
2013 again = ehci_state_fetchentry(ehci, async);
2017 q = ehci_state_fetchqh(ehci, async);
2019 assert(q->async == async);
2027 again = ehci_state_fetchitd(ehci, async);
2031 again = ehci_state_fetchsitd(ehci, async);
2034 case EST_ADVANCEQUEUE:
2036 again = ehci_state_advqueue(q);
2041 again = ehci_state_fetchqtd(q);
2044 case EST_HORIZONTALQH:
2046 again = ehci_state_horizqh(q);
2051 again = ehci_state_execute(q);
2053 ehci->async_stepdown = 0;
2060 ehci->async_stepdown = 0;
2062 again = ehci_state_executing(q);
2067 again = ehci_state_writeback(q);
2069 ehci->periodic_sched_active = PERIODIC_ACTIVE;
2074 fprintf(stderr, "Bad state!\n");
2076 g_assert_not_reached();
2081 fprintf(stderr, "processing error - resetting ehci HC\n");
2089 static void ehci_advance_async_state(EHCIState *ehci)
2091 const int async = 1;
2093 switch(ehci_get_state(ehci, async)) {
2095 if (!ehci_async_enabled(ehci)) {
2098 ehci_set_state(ehci, async, EST_ACTIVE);
2099 // No break, fall through to ACTIVE
2102 if (!ehci_async_enabled(ehci)) {
2103 ehci_queues_rip_all(ehci, async);
2104 ehci_set_state(ehci, async, EST_INACTIVE);
2108 /* make sure guest has acknowledged the doorbell interrupt */
2109 /* TO-DO: is this really needed? */
2110 if (ehci->usbsts & USBSTS_IAA) {
2111 DPRINTF("IAA status bit still set.\n");
2115 /* check that address register has been set */
2116 if (ehci->asynclistaddr == 0) {
2120 ehci_set_state(ehci, async, EST_WAITLISTHEAD);
2121 ehci_advance_state(ehci, async);
2123 /* If the doorbell is set, the guest wants to make a change to the
2124 * schedule. The host controller needs to release cached data.
2127 if (ehci->usbcmd & USBCMD_IAAD) {
2128 /* Remove all unseen qhs from the async qhs queue */
2129 ehci_queues_rip_unseen(ehci, async);
2130 trace_usb_ehci_doorbell_ack();
2131 ehci->usbcmd &= ~USBCMD_IAAD;
2132 ehci_raise_irq(ehci, USBSTS_IAA);
2137 /* this should only be due to a developer mistake */
2138 fprintf(stderr, "ehci: Bad asynchronous state %d. "
2139 "Resetting to active\n", ehci->astate);
2140 g_assert_not_reached();
2144 static void ehci_advance_periodic_state(EHCIState *ehci)
2148 const int async = 0;
2152 switch(ehci_get_state(ehci, async)) {
2154 if (!(ehci->frindex & 7) && ehci_periodic_enabled(ehci)) {
2155 ehci_set_state(ehci, async, EST_ACTIVE);
2156 // No break, fall through to ACTIVE
2161 if (!(ehci->frindex & 7) && !ehci_periodic_enabled(ehci)) {
2162 ehci_queues_rip_all(ehci, async);
2163 ehci_set_state(ehci, async, EST_INACTIVE);
2167 list = ehci->periodiclistbase & 0xfffff000;
2168 /* check that register has been set */
2172 list |= ((ehci->frindex & 0x1ff8) >> 1);
2174 if (get_dwords(ehci, list, &entry, 1) < 0) {
2178 DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
2179 ehci->frindex / 8, list, entry);
2180 ehci_set_fetch_addr(ehci, async,entry);
2181 ehci_set_state(ehci, async, EST_FETCHENTRY);
2182 ehci_advance_state(ehci, async);
2183 ehci_queues_rip_unused(ehci, async);
2187 /* this should only be due to a developer mistake */
2188 fprintf(stderr, "ehci: Bad periodic state %d. "
2189 "Resetting to active\n", ehci->pstate);
2190 g_assert_not_reached();
2194 static void ehci_update_frindex(EHCIState *ehci, int uframes)
2198 if (!ehci_enabled(ehci) && ehci->pstate == EST_INACTIVE) {
2202 for (i = 0; i < uframes; i++) {
2205 if (ehci->frindex == 0x00002000) {
2206 ehci_raise_irq(ehci, USBSTS_FLR);
2209 if (ehci->frindex == 0x00004000) {
2210 ehci_raise_irq(ehci, USBSTS_FLR);
2212 if (ehci->usbsts_frindex >= 0x00004000) {
2213 ehci->usbsts_frindex -= 0x00004000;
2215 ehci->usbsts_frindex = 0;
2221 static void ehci_frame_timer(void *opaque)
2223 EHCIState *ehci = opaque;
2225 int64_t expire_time, t_now;
2226 uint64_t ns_elapsed;
2227 int uframes, skipped_uframes;
2230 t_now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2231 ns_elapsed = t_now - ehci->last_run_ns;
2232 uframes = ns_elapsed / UFRAME_TIMER_NS;
2234 if (ehci_periodic_enabled(ehci) || ehci->pstate != EST_INACTIVE) {
2237 if (uframes > (ehci->maxframes * 8)) {
2238 skipped_uframes = uframes - (ehci->maxframes * 8);
2239 ehci_update_frindex(ehci, skipped_uframes);
2240 ehci->last_run_ns += UFRAME_TIMER_NS * skipped_uframes;
2241 uframes -= skipped_uframes;
2242 DPRINTF("WARNING - EHCI skipped %d uframes\n", skipped_uframes);
2245 for (i = 0; i < uframes; i++) {
2247 * If we're running behind schedule, we should not catch up
2248 * too fast, as that will make some guests unhappy:
2249 * 1) We must process a minimum of MIN_UFR_PER_TICK frames,
2250 * otherwise we will never catch up
2251 * 2) Process frames until the guest has requested an irq (IOC)
2253 if (i >= MIN_UFR_PER_TICK) {
2254 ehci_commit_irq(ehci);
2255 if ((ehci->usbsts & USBINTR_MASK) & ehci->usbintr) {
2259 if (ehci->periodic_sched_active) {
2260 ehci->periodic_sched_active--;
2262 ehci_update_frindex(ehci, 1);
2263 if ((ehci->frindex & 7) == 0) {
2264 ehci_advance_periodic_state(ehci);
2266 ehci->last_run_ns += UFRAME_TIMER_NS;
2269 ehci->periodic_sched_active = 0;
2270 ehci_update_frindex(ehci, uframes);
2271 ehci->last_run_ns += UFRAME_TIMER_NS * uframes;
2274 if (ehci->periodic_sched_active) {
2275 ehci->async_stepdown = 0;
2276 } else if (ehci->async_stepdown < ehci->maxframes / 2) {
2277 ehci->async_stepdown++;
2280 /* Async is not inside loop since it executes everything it can once
2283 if (ehci_async_enabled(ehci) || ehci->astate != EST_INACTIVE) {
2285 ehci_advance_async_state(ehci);
2288 ehci_commit_irq(ehci);
2289 if (ehci->usbsts_pending) {
2291 ehci->async_stepdown = 0;
2294 if (ehci_enabled(ehci) && (ehci->usbintr & USBSTS_FLR)) {
2299 /* If we've raised int, we speed up the timer, so that we quickly
2300 * notice any new packets queued up in response */
2301 if (ehci->int_req_by_async && (ehci->usbsts & USBSTS_INT)) {
2302 expire_time = t_now + get_ticks_per_sec() / (FRAME_TIMER_FREQ * 4);
2303 ehci->int_req_by_async = false;
2305 expire_time = t_now + (get_ticks_per_sec()
2306 * (ehci->async_stepdown+1) / FRAME_TIMER_FREQ);
2308 timer_mod(ehci->frame_timer, expire_time);
2312 static const MemoryRegionOps ehci_mmio_caps_ops = {
2313 .read = ehci_caps_read,
2314 .valid.min_access_size = 1,
2315 .valid.max_access_size = 4,
2316 .impl.min_access_size = 1,
2317 .impl.max_access_size = 1,
2318 .endianness = DEVICE_LITTLE_ENDIAN,
2321 static const MemoryRegionOps ehci_mmio_opreg_ops = {
2322 .read = ehci_opreg_read,
2323 .write = ehci_opreg_write,
2324 .valid.min_access_size = 4,
2325 .valid.max_access_size = 4,
2326 .endianness = DEVICE_LITTLE_ENDIAN,
2329 static const MemoryRegionOps ehci_mmio_port_ops = {
2330 .read = ehci_port_read,
2331 .write = ehci_port_write,
2332 .valid.min_access_size = 4,
2333 .valid.max_access_size = 4,
2334 .endianness = DEVICE_LITTLE_ENDIAN,
2337 static USBPortOps ehci_port_ops = {
2338 .attach = ehci_attach,
2339 .detach = ehci_detach,
2340 .child_detach = ehci_child_detach,
2341 .wakeup = ehci_wakeup,
2342 .complete = ehci_async_complete_packet,
2345 static USBBusOps ehci_bus_ops_companion = {
2346 .register_companion = ehci_register_companion,
2347 .wakeup_endpoint = ehci_wakeup_endpoint,
2349 static USBBusOps ehci_bus_ops_standalone = {
2350 .wakeup_endpoint = ehci_wakeup_endpoint,
2353 static void usb_ehci_pre_save(void *opaque)
2355 EHCIState *ehci = opaque;
2356 uint32_t new_frindex;
2358 /* Round down frindex to a multiple of 8 for migration compatibility */
2359 new_frindex = ehci->frindex & ~7;
2360 ehci->last_run_ns -= (ehci->frindex - new_frindex) * UFRAME_TIMER_NS;
2361 ehci->frindex = new_frindex;
2364 static int usb_ehci_post_load(void *opaque, int version_id)
2366 EHCIState *s = opaque;
2369 for (i = 0; i < NB_PORTS; i++) {
2370 USBPort *companion = s->companion_ports[i];
2371 if (companion == NULL) {
2374 if (s->portsc[i] & PORTSC_POWNER) {
2375 companion->dev = s->ports[i].dev;
2377 companion->dev = NULL;
2384 static void usb_ehci_vm_state_change(void *opaque, int running, RunState state)
2386 EHCIState *ehci = opaque;
2389 * We don't migrate the EHCIQueue-s, instead we rebuild them for the
2390 * schedule in guest memory. We must do the rebuilt ASAP, so that
2391 * USB-devices which have async handled packages have a packet in the
2392 * ep queue to match the completion with.
2394 if (state == RUN_STATE_RUNNING) {
2395 ehci_advance_async_state(ehci);
2399 * The schedule rebuilt from guest memory could cause the migration dest
2400 * to miss a QH unlink, and fail to cancel packets, since the unlinked QH
2401 * will never have existed on the destination. Therefor we must flush the
2402 * async schedule on savevm to catch any not yet noticed unlinks.
2404 if (state == RUN_STATE_SAVE_VM) {
2405 ehci_advance_async_state(ehci);
2406 ehci_queues_rip_unseen(ehci, 1);
2410 const VMStateDescription vmstate_ehci = {
2411 .name = "ehci-core",
2413 .minimum_version_id = 1,
2414 .pre_save = usb_ehci_pre_save,
2415 .post_load = usb_ehci_post_load,
2416 .fields = (VMStateField[]) {
2417 /* mmio registers */
2418 VMSTATE_UINT32(usbcmd, EHCIState),
2419 VMSTATE_UINT32(usbsts, EHCIState),
2420 VMSTATE_UINT32_V(usbsts_pending, EHCIState, 2),
2421 VMSTATE_UINT32_V(usbsts_frindex, EHCIState, 2),
2422 VMSTATE_UINT32(usbintr, EHCIState),
2423 VMSTATE_UINT32(frindex, EHCIState),
2424 VMSTATE_UINT32(ctrldssegment, EHCIState),
2425 VMSTATE_UINT32(periodiclistbase, EHCIState),
2426 VMSTATE_UINT32(asynclistaddr, EHCIState),
2427 VMSTATE_UINT32(configflag, EHCIState),
2428 VMSTATE_UINT32(portsc[0], EHCIState),
2429 VMSTATE_UINT32(portsc[1], EHCIState),
2430 VMSTATE_UINT32(portsc[2], EHCIState),
2431 VMSTATE_UINT32(portsc[3], EHCIState),
2432 VMSTATE_UINT32(portsc[4], EHCIState),
2433 VMSTATE_UINT32(portsc[5], EHCIState),
2435 VMSTATE_TIMER_PTR(frame_timer, EHCIState),
2436 VMSTATE_UINT64(last_run_ns, EHCIState),
2437 VMSTATE_UINT32(async_stepdown, EHCIState),
2438 /* schedule state */
2439 VMSTATE_UINT32(astate, EHCIState),
2440 VMSTATE_UINT32(pstate, EHCIState),
2441 VMSTATE_UINT32(a_fetch_addr, EHCIState),
2442 VMSTATE_UINT32(p_fetch_addr, EHCIState),
2443 VMSTATE_END_OF_LIST()
2447 void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)
2451 if (s->portnr > NB_PORTS) {
2452 error_setg(errp, "Too many ports! Max. port number is %d.",
2457 usb_bus_new(&s->bus, sizeof(s->bus), s->companion_enable ?
2458 &ehci_bus_ops_companion : &ehci_bus_ops_standalone, dev);
2459 for (i = 0; i < s->portnr; i++) {
2460 usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
2461 USB_SPEED_MASK_HIGH);
2462 s->ports[i].dev = 0;
2465 s->frame_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, ehci_frame_timer, s);
2466 s->async_bh = qemu_bh_new(ehci_frame_timer, s);
2469 s->vmstate = qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
2472 void usb_ehci_unrealize(EHCIState *s, DeviceState *dev, Error **errp)
2474 trace_usb_ehci_unrealize();
2476 if (s->frame_timer) {
2477 timer_del(s->frame_timer);
2478 timer_free(s->frame_timer);
2479 s->frame_timer = NULL;
2482 qemu_bh_delete(s->async_bh);
2485 ehci_queues_rip_all(s, 0);
2486 ehci_queues_rip_all(s, 1);
2488 memory_region_del_subregion(&s->mem, &s->mem_caps);
2489 memory_region_del_subregion(&s->mem, &s->mem_opreg);
2490 memory_region_del_subregion(&s->mem, &s->mem_ports);
2492 usb_bus_release(&s->bus);
2495 qemu_del_vm_change_state_handler(s->vmstate);
2499 void usb_ehci_init(EHCIState *s, DeviceState *dev)
2501 /* 2.2 host controller interface version */
2502 s->caps[0x00] = (uint8_t)(s->opregbase - s->capsbase);
2503 s->caps[0x01] = 0x00;
2504 s->caps[0x02] = 0x00;
2505 s->caps[0x03] = 0x01; /* HC version */
2506 s->caps[0x04] = s->portnr; /* Number of downstream ports */
2507 s->caps[0x05] = 0x00; /* No companion ports at present */
2508 s->caps[0x06] = 0x00;
2509 s->caps[0x07] = 0x00;
2510 s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */
2511 s->caps[0x0a] = 0x00;
2512 s->caps[0x0b] = 0x00;
2514 QTAILQ_INIT(&s->aqueues);
2515 QTAILQ_INIT(&s->pqueues);
2516 usb_packet_init(&s->ipacket);
2518 memory_region_init(&s->mem, OBJECT(dev), "ehci", MMIO_SIZE);
2519 memory_region_init_io(&s->mem_caps, OBJECT(dev), &ehci_mmio_caps_ops, s,
2520 "capabilities", CAPA_SIZE);
2521 memory_region_init_io(&s->mem_opreg, OBJECT(dev), &ehci_mmio_opreg_ops, s,
2522 "operational", s->portscbase);
2523 memory_region_init_io(&s->mem_ports, OBJECT(dev), &ehci_mmio_port_ops, s,
2524 "ports", 4 * s->portnr);
2526 memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);
2527 memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);
2528 memory_region_add_subregion(&s->mem, s->opregbase + s->portscbase,
2533 * vim: expandtab ts=4