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 "qemu/osdep.h"
31 #include "qapi/error.h"
32 #include "hw/usb/ehci-regs.h"
33 #include "hw/usb/hcd-ehci.h"
36 #define FRAME_TIMER_FREQ 1000
37 #define FRAME_TIMER_NS (NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ)
38 #define UFRAME_TIMER_NS (FRAME_TIMER_NS / 8)
40 #define NB_MAXINTRATE 8 // Max rate at which controller issues ints
41 #define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction
42 #define MAX_QH 100 // Max allowable queue heads in a chain
43 #define MIN_UFR_PER_TICK 24 /* Min frames to process when catching up */
44 #define PERIODIC_ACTIVE 512 /* Micro-frames */
46 /* Internal periodic / asynchronous schedule state machine states
53 /* The following states are internal to the state machine function
67 /* macros for accessing fields within next link pointer entry */
68 #define NLPTR_GET(x) ((x) & 0xffffffe0)
69 #define NLPTR_TYPE_GET(x) (((x) >> 1) & 3)
70 #define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid
72 /* link pointer types */
73 #define NLPTR_TYPE_ITD 0 // isoc xfer descriptor
74 #define NLPTR_TYPE_QH 1 // queue head
75 #define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor
76 #define NLPTR_TYPE_FSTN 3 // frame span traversal node
78 #define SET_LAST_RUN_CLOCK(s) \
79 (s)->last_run_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
81 /* nifty macros from Arnon's EHCI version */
82 #define get_field(data, field) \
83 (((data) & field##_MASK) >> field##_SH)
85 #define set_field(data, newval, field) do { \
86 uint32_t val = *data; \
87 val &= ~ field##_MASK; \
88 val |= ((newval) << field##_SH) & field##_MASK; \
92 static const char *ehci_state_names[] = {
93 [EST_INACTIVE] = "INACTIVE",
94 [EST_ACTIVE] = "ACTIVE",
95 [EST_EXECUTING] = "EXECUTING",
96 [EST_SLEEPING] = "SLEEPING",
97 [EST_WAITLISTHEAD] = "WAITLISTHEAD",
98 [EST_FETCHENTRY] = "FETCH ENTRY",
99 [EST_FETCHQH] = "FETCH QH",
100 [EST_FETCHITD] = "FETCH ITD",
101 [EST_ADVANCEQUEUE] = "ADVANCEQUEUE",
102 [EST_FETCHQTD] = "FETCH QTD",
103 [EST_EXECUTE] = "EXECUTE",
104 [EST_WRITEBACK] = "WRITEBACK",
105 [EST_HORIZONTALQH] = "HORIZONTALQH",
108 static const char *ehci_mmio_names[] = {
111 [USBINTR] = "USBINTR",
112 [FRINDEX] = "FRINDEX",
113 [PERIODICLISTBASE] = "P-LIST BASE",
114 [ASYNCLISTADDR] = "A-LIST ADDR",
115 [CONFIGFLAG] = "CONFIGFLAG",
118 static int ehci_state_executing(EHCIQueue *q);
119 static int ehci_state_writeback(EHCIQueue *q);
120 static int ehci_state_advqueue(EHCIQueue *q);
121 static int ehci_fill_queue(EHCIPacket *p);
122 static void ehci_free_packet(EHCIPacket *p);
124 static const char *nr2str(const char **n, size_t len, uint32_t nr)
126 if (nr < len && n[nr] != NULL) {
133 static const char *state2str(uint32_t state)
135 return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
138 static const char *addr2str(hwaddr addr)
140 return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
143 static void ehci_trace_usbsts(uint32_t mask, int state)
146 if (mask & USBSTS_INT) {
147 trace_usb_ehci_usbsts("INT", state);
149 if (mask & USBSTS_ERRINT) {
150 trace_usb_ehci_usbsts("ERRINT", state);
152 if (mask & USBSTS_PCD) {
153 trace_usb_ehci_usbsts("PCD", state);
155 if (mask & USBSTS_FLR) {
156 trace_usb_ehci_usbsts("FLR", state);
158 if (mask & USBSTS_HSE) {
159 trace_usb_ehci_usbsts("HSE", state);
161 if (mask & USBSTS_IAA) {
162 trace_usb_ehci_usbsts("IAA", state);
166 if (mask & USBSTS_HALT) {
167 trace_usb_ehci_usbsts("HALT", state);
169 if (mask & USBSTS_REC) {
170 trace_usb_ehci_usbsts("REC", state);
172 if (mask & USBSTS_PSS) {
173 trace_usb_ehci_usbsts("PSS", state);
175 if (mask & USBSTS_ASS) {
176 trace_usb_ehci_usbsts("ASS", state);
180 static inline void ehci_set_usbsts(EHCIState *s, int mask)
182 if ((s->usbsts & mask) == mask) {
185 ehci_trace_usbsts(mask, 1);
189 static inline void ehci_clear_usbsts(EHCIState *s, int mask)
191 if ((s->usbsts & mask) == 0) {
194 ehci_trace_usbsts(mask, 0);
198 /* update irq line */
199 static inline void ehci_update_irq(EHCIState *s)
203 if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
207 trace_usb_ehci_irq(level, s->frindex, s->usbsts, s->usbintr);
208 qemu_set_irq(s->irq, level);
211 /* flag interrupt condition */
212 static inline void ehci_raise_irq(EHCIState *s, int intr)
214 if (intr & (USBSTS_PCD | USBSTS_FLR | USBSTS_HSE)) {
218 s->usbsts_pending |= intr;
223 * Commit pending interrupts (added via ehci_raise_irq),
224 * at the rate allowed by "Interrupt Threshold Control".
226 static inline void ehci_commit_irq(EHCIState *s)
230 if (!s->usbsts_pending) {
233 if (s->usbsts_frindex > s->frindex) {
237 itc = (s->usbcmd >> 16) & 0xff;
238 s->usbsts |= s->usbsts_pending;
239 s->usbsts_pending = 0;
240 s->usbsts_frindex = s->frindex + itc;
244 static void ehci_update_halt(EHCIState *s)
246 if (s->usbcmd & USBCMD_RUNSTOP) {
247 ehci_clear_usbsts(s, USBSTS_HALT);
249 if (s->astate == EST_INACTIVE && s->pstate == EST_INACTIVE) {
250 ehci_set_usbsts(s, USBSTS_HALT);
255 static void ehci_set_state(EHCIState *s, int async, int state)
258 trace_usb_ehci_state("async", state2str(state));
260 if (s->astate == EST_INACTIVE) {
261 ehci_clear_usbsts(s, USBSTS_ASS);
264 ehci_set_usbsts(s, USBSTS_ASS);
267 trace_usb_ehci_state("periodic", state2str(state));
269 if (s->pstate == EST_INACTIVE) {
270 ehci_clear_usbsts(s, USBSTS_PSS);
273 ehci_set_usbsts(s, USBSTS_PSS);
278 static int ehci_get_state(EHCIState *s, int async)
280 return async ? s->astate : s->pstate;
283 static void ehci_set_fetch_addr(EHCIState *s, int async, uint32_t addr)
286 s->a_fetch_addr = addr;
288 s->p_fetch_addr = addr;
292 static int ehci_get_fetch_addr(EHCIState *s, int async)
294 return async ? s->a_fetch_addr : s->p_fetch_addr;
297 static void ehci_trace_qh(EHCIQueue *q, hwaddr addr, EHCIqh *qh)
299 /* need three here due to argument count limits */
300 trace_usb_ehci_qh_ptrs(q, addr, qh->next,
301 qh->current_qtd, qh->next_qtd, qh->altnext_qtd);
302 trace_usb_ehci_qh_fields(addr,
303 get_field(qh->epchar, QH_EPCHAR_RL),
304 get_field(qh->epchar, QH_EPCHAR_MPLEN),
305 get_field(qh->epchar, QH_EPCHAR_EPS),
306 get_field(qh->epchar, QH_EPCHAR_EP),
307 get_field(qh->epchar, QH_EPCHAR_DEVADDR));
308 trace_usb_ehci_qh_bits(addr,
309 (bool)(qh->epchar & QH_EPCHAR_C),
310 (bool)(qh->epchar & QH_EPCHAR_H),
311 (bool)(qh->epchar & QH_EPCHAR_DTC),
312 (bool)(qh->epchar & QH_EPCHAR_I));
315 static void ehci_trace_qtd(EHCIQueue *q, hwaddr addr, EHCIqtd *qtd)
317 /* need three here due to argument count limits */
318 trace_usb_ehci_qtd_ptrs(q, addr, qtd->next, qtd->altnext);
319 trace_usb_ehci_qtd_fields(addr,
320 get_field(qtd->token, QTD_TOKEN_TBYTES),
321 get_field(qtd->token, QTD_TOKEN_CPAGE),
322 get_field(qtd->token, QTD_TOKEN_CERR),
323 get_field(qtd->token, QTD_TOKEN_PID));
324 trace_usb_ehci_qtd_bits(addr,
325 (bool)(qtd->token & QTD_TOKEN_IOC),
326 (bool)(qtd->token & QTD_TOKEN_ACTIVE),
327 (bool)(qtd->token & QTD_TOKEN_HALT),
328 (bool)(qtd->token & QTD_TOKEN_BABBLE),
329 (bool)(qtd->token & QTD_TOKEN_XACTERR));
332 static void ehci_trace_itd(EHCIState *s, hwaddr addr, EHCIitd *itd)
334 trace_usb_ehci_itd(addr, itd->next,
335 get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT),
336 get_field(itd->bufptr[2], ITD_BUFPTR_MULT),
337 get_field(itd->bufptr[0], ITD_BUFPTR_EP),
338 get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR));
341 static void ehci_trace_sitd(EHCIState *s, hwaddr addr,
344 trace_usb_ehci_sitd(addr, sitd->next,
345 (bool)(sitd->results & SITD_RESULTS_ACTIVE));
348 static void ehci_trace_guest_bug(EHCIState *s, const char *message)
350 trace_usb_ehci_guest_bug(message);
351 fprintf(stderr, "ehci warning: %s\n", message);
354 static inline bool ehci_enabled(EHCIState *s)
356 return s->usbcmd & USBCMD_RUNSTOP;
359 static inline bool ehci_async_enabled(EHCIState *s)
361 return ehci_enabled(s) && (s->usbcmd & USBCMD_ASE);
364 static inline bool ehci_periodic_enabled(EHCIState *s)
366 return ehci_enabled(s) && (s->usbcmd & USBCMD_PSE);
369 /* Get an array of dwords from main memory */
370 static inline int get_dwords(EHCIState *ehci, uint32_t addr,
371 uint32_t *buf, int num)
376 ehci_raise_irq(ehci, USBSTS_HSE);
377 ehci->usbcmd &= ~USBCMD_RUNSTOP;
378 trace_usb_ehci_dma_error();
382 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
383 dma_memory_read(ehci->as, addr, buf, sizeof(*buf));
384 *buf = le32_to_cpu(*buf);
390 /* Put an array of dwords in to main memory */
391 static inline int put_dwords(EHCIState *ehci, uint32_t addr,
392 uint32_t *buf, int num)
397 ehci_raise_irq(ehci, USBSTS_HSE);
398 ehci->usbcmd &= ~USBCMD_RUNSTOP;
399 trace_usb_ehci_dma_error();
403 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
404 uint32_t tmp = cpu_to_le32(*buf);
405 dma_memory_write(ehci->as, addr, &tmp, sizeof(tmp));
411 static int ehci_get_pid(EHCIqtd *qtd)
413 switch (get_field(qtd->token, QTD_TOKEN_PID)) {
415 return USB_TOKEN_OUT;
419 return USB_TOKEN_SETUP;
421 fprintf(stderr, "bad token\n");
426 static bool ehci_verify_qh(EHCIQueue *q, EHCIqh *qh)
428 uint32_t devaddr = get_field(qh->epchar, QH_EPCHAR_DEVADDR);
429 uint32_t endp = get_field(qh->epchar, QH_EPCHAR_EP);
430 if ((devaddr != get_field(q->qh.epchar, QH_EPCHAR_DEVADDR)) ||
431 (endp != get_field(q->qh.epchar, QH_EPCHAR_EP)) ||
432 (qh->current_qtd != q->qh.current_qtd) ||
433 (q->async && qh->next_qtd != q->qh.next_qtd) ||
434 (memcmp(&qh->altnext_qtd, &q->qh.altnext_qtd,
435 7 * sizeof(uint32_t)) != 0) ||
436 (q->dev != NULL && q->dev->addr != devaddr)) {
443 static bool ehci_verify_qtd(EHCIPacket *p, EHCIqtd *qtd)
445 if (p->qtdaddr != p->queue->qtdaddr ||
446 (p->queue->async && !NLPTR_TBIT(p->qtd.next) &&
447 (p->qtd.next != qtd->next)) ||
448 (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd->altnext)) ||
449 p->qtd.token != qtd->token ||
450 p->qtd.bufptr[0] != qtd->bufptr[0]) {
457 static bool ehci_verify_pid(EHCIQueue *q, EHCIqtd *qtd)
459 int ep = get_field(q->qh.epchar, QH_EPCHAR_EP);
460 int pid = ehci_get_pid(qtd);
462 /* Note the pid changing is normal for ep 0 (the control ep) */
463 if (q->last_pid && ep != 0 && pid != q->last_pid) {
470 /* Finish executing and writeback a packet outside of the regular
471 fetchqh -> fetchqtd -> execute -> writeback cycle */
472 static void ehci_writeback_async_complete_packet(EHCIPacket *p)
474 EHCIQueue *q = p->queue;
479 /* Verify the qh + qtd, like we do when going through fetchqh & fetchqtd */
480 get_dwords(q->ehci, NLPTR_GET(q->qhaddr),
481 (uint32_t *) &qh, sizeof(EHCIqh) >> 2);
482 get_dwords(q->ehci, NLPTR_GET(q->qtdaddr),
483 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2);
484 if (!ehci_verify_qh(q, &qh) || !ehci_verify_qtd(p, &qtd)) {
485 p->async = EHCI_ASYNC_INITIALIZED;
490 state = ehci_get_state(q->ehci, q->async);
491 ehci_state_executing(q);
492 ehci_state_writeback(q); /* Frees the packet! */
493 if (!(q->qh.token & QTD_TOKEN_HALT)) {
494 ehci_state_advqueue(q);
496 ehci_set_state(q->ehci, q->async, state);
499 /* packet management */
501 static EHCIPacket *ehci_alloc_packet(EHCIQueue *q)
505 p = g_new0(EHCIPacket, 1);
507 usb_packet_init(&p->packet);
508 QTAILQ_INSERT_TAIL(&q->packets, p, next);
509 trace_usb_ehci_packet_action(p->queue, p, "alloc");
513 static void ehci_free_packet(EHCIPacket *p)
515 if (p->async == EHCI_ASYNC_FINISHED &&
516 !(p->queue->qh.token & QTD_TOKEN_HALT)) {
517 ehci_writeback_async_complete_packet(p);
520 trace_usb_ehci_packet_action(p->queue, p, "free");
521 if (p->async == EHCI_ASYNC_INFLIGHT) {
522 usb_cancel_packet(&p->packet);
524 if (p->async == EHCI_ASYNC_FINISHED &&
525 p->packet.status == USB_RET_SUCCESS) {
527 "EHCI: Dropping completed packet from halted %s ep %02X\n",
528 (p->pid == USB_TOKEN_IN) ? "in" : "out",
529 get_field(p->queue->qh.epchar, QH_EPCHAR_EP));
531 if (p->async != EHCI_ASYNC_NONE) {
532 usb_packet_unmap(&p->packet, &p->sgl);
533 qemu_sglist_destroy(&p->sgl);
535 QTAILQ_REMOVE(&p->queue->packets, p, next);
536 usb_packet_cleanup(&p->packet);
540 /* queue management */
542 static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, uint32_t addr, int async)
544 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
547 q = g_malloc0(sizeof(*q));
551 QTAILQ_INIT(&q->packets);
552 QTAILQ_INSERT_HEAD(head, q, next);
553 trace_usb_ehci_queue_action(q, "alloc");
557 static void ehci_queue_stopped(EHCIQueue *q)
559 int endp = get_field(q->qh.epchar, QH_EPCHAR_EP);
561 if (!q->last_pid || !q->dev) {
565 usb_device_ep_stopped(q->dev, usb_ep_get(q->dev, q->last_pid, endp));
568 static int ehci_cancel_queue(EHCIQueue *q)
573 p = QTAILQ_FIRST(&q->packets);
578 trace_usb_ehci_queue_action(q, "cancel");
582 } while ((p = QTAILQ_FIRST(&q->packets)) != NULL);
585 ehci_queue_stopped(q);
589 static int ehci_reset_queue(EHCIQueue *q)
593 trace_usb_ehci_queue_action(q, "reset");
594 packets = ehci_cancel_queue(q);
601 static void ehci_free_queue(EHCIQueue *q, const char *warn)
603 EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
606 trace_usb_ehci_queue_action(q, "free");
607 cancelled = ehci_cancel_queue(q);
608 if (warn && cancelled > 0) {
609 ehci_trace_guest_bug(q->ehci, warn);
611 QTAILQ_REMOVE(head, q, next);
615 static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
618 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
621 QTAILQ_FOREACH(q, head, next) {
622 if (addr == q->qhaddr) {
629 static void ehci_queues_rip_unused(EHCIState *ehci, int async)
631 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
632 const char *warn = async ? "guest unlinked busy QH" : NULL;
633 uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
636 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
639 q->ts = ehci->last_run_ns;
642 if (ehci->last_run_ns < q->ts + maxage) {
645 ehci_free_queue(q, warn);
649 static void ehci_queues_rip_unseen(EHCIState *ehci, int async)
651 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
654 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
656 ehci_free_queue(q, NULL);
661 static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
663 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
666 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
670 ehci_free_queue(q, NULL);
674 static void ehci_queues_rip_all(EHCIState *ehci, int async)
676 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
677 const char *warn = async ? "guest stopped busy async schedule" : NULL;
680 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
681 ehci_free_queue(q, warn);
685 /* Attach or detach a device on root hub */
687 static void ehci_attach(USBPort *port)
689 EHCIState *s = port->opaque;
690 uint32_t *portsc = &s->portsc[port->index];
691 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
693 trace_usb_ehci_port_attach(port->index, owner, port->dev->product_desc);
695 if (*portsc & PORTSC_POWNER) {
696 USBPort *companion = s->companion_ports[port->index];
697 companion->dev = port->dev;
698 companion->ops->attach(companion);
702 *portsc |= PORTSC_CONNECT;
703 *portsc |= PORTSC_CSC;
705 ehci_raise_irq(s, USBSTS_PCD);
708 static void ehci_detach(USBPort *port)
710 EHCIState *s = port->opaque;
711 uint32_t *portsc = &s->portsc[port->index];
712 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
714 trace_usb_ehci_port_detach(port->index, owner);
716 if (*portsc & PORTSC_POWNER) {
717 USBPort *companion = s->companion_ports[port->index];
718 companion->ops->detach(companion);
719 companion->dev = NULL;
721 * EHCI spec 4.2.2: "When a disconnect occurs... On the event,
722 * the port ownership is returned immediately to the EHCI controller."
724 *portsc &= ~PORTSC_POWNER;
728 ehci_queues_rip_device(s, port->dev, 0);
729 ehci_queues_rip_device(s, port->dev, 1);
731 *portsc &= ~(PORTSC_CONNECT|PORTSC_PED|PORTSC_SUSPEND);
732 *portsc |= PORTSC_CSC;
734 ehci_raise_irq(s, USBSTS_PCD);
737 static void ehci_child_detach(USBPort *port, USBDevice *child)
739 EHCIState *s = port->opaque;
740 uint32_t portsc = s->portsc[port->index];
742 if (portsc & PORTSC_POWNER) {
743 USBPort *companion = s->companion_ports[port->index];
744 companion->ops->child_detach(companion, child);
748 ehci_queues_rip_device(s, child, 0);
749 ehci_queues_rip_device(s, child, 1);
752 static void ehci_wakeup(USBPort *port)
754 EHCIState *s = port->opaque;
755 uint32_t *portsc = &s->portsc[port->index];
757 if (*portsc & PORTSC_POWNER) {
758 USBPort *companion = s->companion_ports[port->index];
759 if (companion->ops->wakeup) {
760 companion->ops->wakeup(companion);
765 if (*portsc & PORTSC_SUSPEND) {
766 trace_usb_ehci_port_wakeup(port->index);
767 *portsc |= PORTSC_FPRES;
768 ehci_raise_irq(s, USBSTS_PCD);
771 qemu_bh_schedule(s->async_bh);
774 static void ehci_register_companion(USBBus *bus, USBPort *ports[],
775 uint32_t portcount, uint32_t firstport,
778 EHCIState *s = container_of(bus, EHCIState, bus);
781 if (firstport + portcount > NB_PORTS) {
782 error_setg(errp, "firstport must be between 0 and %u",
783 NB_PORTS - portcount);
787 for (i = 0; i < portcount; i++) {
788 if (s->companion_ports[firstport + i]) {
789 error_setg(errp, "firstport %u asks for ports %u-%u,"
790 " but port %u has a companion assigned already",
791 firstport, firstport, firstport + portcount - 1,
797 for (i = 0; i < portcount; i++) {
798 s->companion_ports[firstport + i] = ports[i];
799 s->ports[firstport + i].speedmask |=
800 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL;
801 /* Ensure devs attached before the initial reset go to the companion */
802 s->portsc[firstport + i] = PORTSC_POWNER;
805 s->companion_count++;
806 s->caps[0x05] = (s->companion_count << 4) | portcount;
809 static void ehci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
812 EHCIState *s = container_of(bus, EHCIState, bus);
813 uint32_t portsc = s->portsc[ep->dev->port->index];
815 if (portsc & PORTSC_POWNER) {
819 s->periodic_sched_active = PERIODIC_ACTIVE;
820 qemu_bh_schedule(s->async_bh);
823 static USBDevice *ehci_find_device(EHCIState *ehci, uint8_t addr)
829 for (i = 0; i < NB_PORTS; i++) {
830 port = &ehci->ports[i];
831 if (!(ehci->portsc[i] & PORTSC_PED)) {
832 DPRINTF("Port %d not enabled\n", i);
835 dev = usb_find_device(port, addr);
843 /* 4.1 host controller initialization */
844 void ehci_reset(void *opaque)
846 EHCIState *s = opaque;
848 USBDevice *devs[NB_PORTS];
850 trace_usb_ehci_reset();
853 * Do the detach before touching portsc, so that it correctly gets send to
854 * us or to our companion based on PORTSC_POWNER before the reset.
856 for(i = 0; i < NB_PORTS; i++) {
857 devs[i] = s->ports[i].dev;
858 if (devs[i] && devs[i]->attached) {
859 usb_detach(&s->ports[i]);
863 memset(&s->opreg, 0x00, sizeof(s->opreg));
864 memset(&s->portsc, 0x00, sizeof(s->portsc));
866 s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
867 s->usbsts = USBSTS_HALT;
868 s->usbsts_pending = 0;
869 s->usbsts_frindex = 0;
872 s->astate = EST_INACTIVE;
873 s->pstate = EST_INACTIVE;
875 for(i = 0; i < NB_PORTS; i++) {
876 if (s->companion_ports[i]) {
877 s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
879 s->portsc[i] = PORTSC_PPOWER;
881 if (devs[i] && devs[i]->attached) {
882 usb_attach(&s->ports[i]);
883 usb_device_reset(devs[i]);
886 ehci_queues_rip_all(s, 0);
887 ehci_queues_rip_all(s, 1);
888 timer_del(s->frame_timer);
889 qemu_bh_cancel(s->async_bh);
892 static uint64_t ehci_caps_read(void *ptr, hwaddr addr,
896 return s->caps[addr];
899 static void ehci_caps_write(void *ptr, hwaddr addr,
900 uint64_t val, unsigned size)
904 static uint64_t ehci_opreg_read(void *ptr, hwaddr addr,
912 /* Round down to mult of 8, else it can go backwards on migration */
913 val = s->frindex & ~7;
916 val = s->opreg[addr >> 2];
919 trace_usb_ehci_opreg_read(addr + s->opregbase, addr2str(addr), val);
923 static uint64_t ehci_port_read(void *ptr, hwaddr addr,
929 val = s->portsc[addr >> 2];
930 trace_usb_ehci_portsc_read(addr + s->portscbase, addr >> 2, val);
934 static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner)
936 USBDevice *dev = s->ports[port].dev;
937 uint32_t *portsc = &s->portsc[port];
940 if (s->companion_ports[port] == NULL)
943 owner = owner & PORTSC_POWNER;
944 orig = *portsc & PORTSC_POWNER;
946 if (!(owner ^ orig)) {
950 if (dev && dev->attached) {
951 usb_detach(&s->ports[port]);
954 *portsc &= ~PORTSC_POWNER;
957 if (dev && dev->attached) {
958 usb_attach(&s->ports[port]);
962 static void ehci_port_write(void *ptr, hwaddr addr,
963 uint64_t val, unsigned size)
966 int port = addr >> 2;
967 uint32_t *portsc = &s->portsc[port];
968 uint32_t old = *portsc;
969 USBDevice *dev = s->ports[port].dev;
971 trace_usb_ehci_portsc_write(addr + s->portscbase, addr >> 2, val);
974 *portsc &= ~(val & PORTSC_RWC_MASK);
975 /* The guest may clear, but not set the PED bit */
976 *portsc &= val | ~PORTSC_PED;
977 /* POWNER is masked out by RO_MASK as it is RO when we've no companion */
978 handle_port_owner_write(s, port, val);
979 /* And finally apply RO_MASK */
980 val &= PORTSC_RO_MASK;
982 if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
983 trace_usb_ehci_port_reset(port, 1);
986 if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
987 trace_usb_ehci_port_reset(port, 0);
988 if (dev && dev->attached) {
989 usb_port_reset(&s->ports[port]);
990 *portsc &= ~PORTSC_CSC;
994 * Table 2.16 Set the enable bit(and enable bit change) to indicate
995 * to SW that this port has a high speed device attached
997 if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
1002 if ((val & PORTSC_SUSPEND) && !(*portsc & PORTSC_SUSPEND)) {
1003 trace_usb_ehci_port_suspend(port);
1005 if (!(val & PORTSC_FPRES) && (*portsc & PORTSC_FPRES)) {
1006 trace_usb_ehci_port_resume(port);
1007 val &= ~PORTSC_SUSPEND;
1010 *portsc &= ~PORTSC_RO_MASK;
1012 trace_usb_ehci_portsc_change(addr + s->portscbase, addr >> 2, *portsc, old);
1015 static void ehci_opreg_write(void *ptr, hwaddr addr,
1016 uint64_t val, unsigned size)
1019 uint32_t *mmio = s->opreg + (addr >> 2);
1020 uint32_t old = *mmio;
1023 trace_usb_ehci_opreg_write(addr + s->opregbase, addr2str(addr), val);
1027 if (val & USBCMD_HCRESET) {
1033 /* not supporting dynamic frame list size at the moment */
1034 if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
1035 fprintf(stderr, "attempt to set frame list size -- value %d\n",
1036 (int)val & USBCMD_FLS);
1040 if (val & USBCMD_IAAD) {
1042 * Process IAAD immediately, otherwise the Linux IAAD watchdog may
1043 * trigger and re-use a qh without us seeing the unlink.
1045 s->async_stepdown = 0;
1046 qemu_bh_schedule(s->async_bh);
1047 trace_usb_ehci_doorbell_ring();
1050 if (((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & val) !=
1051 ((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & s->usbcmd)) {
1052 if (s->pstate == EST_INACTIVE) {
1053 SET_LAST_RUN_CLOCK(s);
1055 s->usbcmd = val; /* Set usbcmd for ehci_update_halt() */
1056 ehci_update_halt(s);
1057 s->async_stepdown = 0;
1058 qemu_bh_schedule(s->async_bh);
1063 val &= USBSTS_RO_MASK; // bits 6 through 31 are RO
1064 ehci_clear_usbsts(s, val); // bits 0 through 5 are R/WC
1070 val &= USBINTR_MASK;
1071 if (ehci_enabled(s) && (USBSTS_FLR & val)) {
1072 qemu_bh_schedule(s->async_bh);
1077 val &= 0x00003fff; /* frindex is 14bits */
1078 s->usbsts_frindex = val;
1084 for(i = 0; i < NB_PORTS; i++)
1085 handle_port_owner_write(s, i, 0);
1089 case PERIODICLISTBASE:
1090 if (ehci_periodic_enabled(s)) {
1092 "ehci: PERIODIC list base register set while periodic schedule\n"
1093 " is enabled and HC is enabled\n");
1098 if (ehci_async_enabled(s)) {
1100 "ehci: ASYNC list address register set while async schedule\n"
1101 " is enabled and HC is enabled\n");
1107 trace_usb_ehci_opreg_change(addr + s->opregbase, addr2str(addr),
1112 * Write the qh back to guest physical memory. This step isn't
1113 * in the EHCI spec but we need to do it since we don't share
1114 * physical memory with our guest VM.
1116 * The first three dwords are read-only for the EHCI, so skip them
1117 * when writing back the qh.
1119 static void ehci_flush_qh(EHCIQueue *q)
1121 uint32_t *qh = (uint32_t *) &q->qh;
1122 uint32_t dwords = sizeof(EHCIqh) >> 2;
1123 uint32_t addr = NLPTR_GET(q->qhaddr);
1125 put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
1130 static int ehci_qh_do_overlay(EHCIQueue *q)
1132 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1140 assert(p->qtdaddr == q->qtdaddr);
1142 // remember values in fields to preserve in qh after overlay
1144 dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE;
1145 ping = q->qh.token & QTD_TOKEN_PING;
1147 q->qh.current_qtd = p->qtdaddr;
1148 q->qh.next_qtd = p->qtd.next;
1149 q->qh.altnext_qtd = p->qtd.altnext;
1150 q->qh.token = p->qtd.token;
1153 eps = get_field(q->qh.epchar, QH_EPCHAR_EPS);
1154 if (eps == EHCI_QH_EPS_HIGH) {
1155 q->qh.token &= ~QTD_TOKEN_PING;
1156 q->qh.token |= ping;
1159 reload = get_field(q->qh.epchar, QH_EPCHAR_RL);
1160 set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
1162 for (i = 0; i < 5; i++) {
1163 q->qh.bufptr[i] = p->qtd.bufptr[i];
1166 if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
1167 // preserve QH DT bit
1168 q->qh.token &= ~QTD_TOKEN_DTOGGLE;
1169 q->qh.token |= dtoggle;
1172 q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
1173 q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
1180 static int ehci_init_transfer(EHCIPacket *p)
1182 uint32_t cpage, offset, bytes, plen;
1185 cpage = get_field(p->qtd.token, QTD_TOKEN_CPAGE);
1186 bytes = get_field(p->qtd.token, QTD_TOKEN_TBYTES);
1187 offset = p->qtd.bufptr[0] & ~QTD_BUFPTR_MASK;
1188 qemu_sglist_init(&p->sgl, p->queue->ehci->device, 5, p->queue->ehci->as);
1192 fprintf(stderr, "cpage out of range (%d)\n", cpage);
1196 page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;
1199 if (plen > 4096 - offset) {
1200 plen = 4096 - offset;
1205 qemu_sglist_add(&p->sgl, page, plen);
1211 static void ehci_finish_transfer(EHCIQueue *q, int len)
1213 uint32_t cpage, offset;
1216 /* update cpage & offset */
1217 cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE);
1218 offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
1221 cpage += offset >> QTD_BUFPTR_SH;
1222 offset &= ~QTD_BUFPTR_MASK;
1224 set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE);
1225 q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
1226 q->qh.bufptr[0] |= offset;
1230 static void ehci_async_complete_packet(USBPort *port, USBPacket *packet)
1233 EHCIState *s = port->opaque;
1234 uint32_t portsc = s->portsc[port->index];
1236 if (portsc & PORTSC_POWNER) {
1237 USBPort *companion = s->companion_ports[port->index];
1238 companion->ops->complete(companion, packet);
1242 p = container_of(packet, EHCIPacket, packet);
1243 assert(p->async == EHCI_ASYNC_INFLIGHT);
1245 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
1246 trace_usb_ehci_packet_action(p->queue, p, "remove");
1247 ehci_free_packet(p);
1251 trace_usb_ehci_packet_action(p->queue, p, "wakeup");
1252 p->async = EHCI_ASYNC_FINISHED;
1254 if (!p->queue->async) {
1255 s->periodic_sched_active = PERIODIC_ACTIVE;
1257 qemu_bh_schedule(s->async_bh);
1260 static void ehci_execute_complete(EHCIQueue *q)
1262 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1266 assert(p->qtdaddr == q->qtdaddr);
1267 assert(p->async == EHCI_ASYNC_INITIALIZED ||
1268 p->async == EHCI_ASYNC_FINISHED);
1270 DPRINTF("execute_complete: qhaddr 0x%x, next 0x%x, qtdaddr 0x%x, "
1271 "status %d, actual_length %d\n",
1272 q->qhaddr, q->qh.next, q->qtdaddr,
1273 p->packet.status, p->packet.actual_length);
1275 switch (p->packet.status) {
1276 case USB_RET_SUCCESS:
1278 case USB_RET_IOERROR:
1280 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
1281 set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
1282 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1285 q->qh.token |= QTD_TOKEN_HALT;
1286 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1289 set_field(&q->qh.altnext_qtd, 0, QH_ALTNEXT_NAKCNT);
1290 return; /* We're not done yet with this transaction */
1291 case USB_RET_BABBLE:
1292 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE);
1293 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1296 /* should not be triggerable */
1297 fprintf(stderr, "USB invalid response %d\n", p->packet.status);
1298 g_assert_not_reached();
1302 /* TODO check 4.12 for splits */
1303 tbytes = get_field(q->qh.token, QTD_TOKEN_TBYTES);
1304 if (tbytes && p->pid == USB_TOKEN_IN) {
1305 tbytes -= p->packet.actual_length;
1307 /* 4.15.1.2 must raise int on a short input packet */
1308 ehci_raise_irq(q->ehci, USBSTS_INT);
1310 q->ehci->int_req_by_async = true;
1316 DPRINTF("updating tbytes to %d\n", tbytes);
1317 set_field(&q->qh.token, tbytes, QTD_TOKEN_TBYTES);
1319 ehci_finish_transfer(q, p->packet.actual_length);
1320 usb_packet_unmap(&p->packet, &p->sgl);
1321 qemu_sglist_destroy(&p->sgl);
1322 p->async = EHCI_ASYNC_NONE;
1324 q->qh.token ^= QTD_TOKEN_DTOGGLE;
1325 q->qh.token &= ~QTD_TOKEN_ACTIVE;
1327 if (q->qh.token & QTD_TOKEN_IOC) {
1328 ehci_raise_irq(q->ehci, USBSTS_INT);
1330 q->ehci->int_req_by_async = true;
1335 /* 4.10.3 returns "again" */
1336 static int ehci_execute(EHCIPacket *p, const char *action)
1342 assert(p->async == EHCI_ASYNC_NONE ||
1343 p->async == EHCI_ASYNC_INITIALIZED);
1345 if (!(p->qtd.token & QTD_TOKEN_ACTIVE)) {
1346 fprintf(stderr, "Attempting to execute inactive qtd\n");
1350 if (get_field(p->qtd.token, QTD_TOKEN_TBYTES) > BUFF_SIZE) {
1351 ehci_trace_guest_bug(p->queue->ehci,
1352 "guest requested more bytes than allowed");
1356 if (!ehci_verify_pid(p->queue, &p->qtd)) {
1357 ehci_queue_stopped(p->queue); /* Mark the ep in the prev dir stopped */
1359 p->pid = ehci_get_pid(&p->qtd);
1360 p->queue->last_pid = p->pid;
1361 endp = get_field(p->queue->qh.epchar, QH_EPCHAR_EP);
1362 ep = usb_ep_get(p->queue->dev, p->pid, endp);
1364 if (p->async == EHCI_ASYNC_NONE) {
1365 if (ehci_init_transfer(p) != 0) {
1369 spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
1370 usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
1371 (p->qtd.token & QTD_TOKEN_IOC) != 0);
1372 usb_packet_map(&p->packet, &p->sgl);
1373 p->async = EHCI_ASYNC_INITIALIZED;
1376 trace_usb_ehci_packet_action(p->queue, p, action);
1377 usb_handle_packet(p->queue->dev, &p->packet);
1378 DPRINTF("submit: qh 0x%x next 0x%x qtd 0x%x pid 0x%x len %zd endp 0x%x "
1379 "status %d actual_length %d\n", p->queue->qhaddr, p->qtd.next,
1380 p->qtdaddr, p->pid, p->packet.iov.size, endp, p->packet.status,
1381 p->packet.actual_length);
1383 if (p->packet.actual_length > BUFF_SIZE) {
1384 fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
1394 static int ehci_process_itd(EHCIState *ehci,
1400 uint32_t i, len, pid, dir, devaddr, endp, xfers = 0;
1401 uint32_t pg, off, ptr1, ptr2, max, mult;
1403 ehci->periodic_sched_active = PERIODIC_ACTIVE;
1405 dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
1406 devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
1407 endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
1408 max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
1409 mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
1411 for(i = 0; i < 8; i++) {
1412 if (itd->transact[i] & ITD_XACT_ACTIVE) {
1413 pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
1414 off = itd->transact[i] & ITD_XACT_OFFSET_MASK;
1415 len = get_field(itd->transact[i], ITD_XACT_LENGTH);
1417 if (len > max * mult) {
1420 if (len > BUFF_SIZE || pg > 6) {
1424 ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK);
1425 qemu_sglist_init(&ehci->isgl, ehci->device, 2, ehci->as);
1426 if (off + len > 4096) {
1427 /* transfer crosses page border */
1429 return -1; /* avoid page pg + 1 */
1431 ptr2 = (itd->bufptr[pg + 1] & ITD_BUFPTR_MASK);
1432 uint32_t len2 = off + len - 4096;
1433 uint32_t len1 = len - len2;
1434 qemu_sglist_add(&ehci->isgl, ptr1 + off, len1);
1435 qemu_sglist_add(&ehci->isgl, ptr2, len2);
1437 qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
1440 pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
1442 dev = ehci_find_device(ehci, devaddr);
1443 ep = usb_ep_get(dev, pid, endp);
1444 if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
1445 usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
1446 (itd->transact[i] & ITD_XACT_IOC) != 0);
1447 usb_packet_map(&ehci->ipacket, &ehci->isgl);
1448 usb_handle_packet(dev, &ehci->ipacket);
1449 usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
1451 DPRINTF("ISOCH: attempt to addess non-iso endpoint\n");
1452 ehci->ipacket.status = USB_RET_NAK;
1453 ehci->ipacket.actual_length = 0;
1455 qemu_sglist_destroy(&ehci->isgl);
1457 switch (ehci->ipacket.status) {
1458 case USB_RET_SUCCESS:
1461 fprintf(stderr, "Unexpected iso usb result: %d\n",
1462 ehci->ipacket.status);
1464 case USB_RET_IOERROR:
1466 /* 3.3.2: XACTERR is only allowed on IN transactions */
1468 itd->transact[i] |= ITD_XACT_XACTERR;
1469 ehci_raise_irq(ehci, USBSTS_ERRINT);
1472 case USB_RET_BABBLE:
1473 itd->transact[i] |= ITD_XACT_BABBLE;
1474 ehci_raise_irq(ehci, USBSTS_ERRINT);
1477 /* no data for us, so do a zero-length transfer */
1478 ehci->ipacket.actual_length = 0;
1482 set_field(&itd->transact[i], len - ehci->ipacket.actual_length,
1483 ITD_XACT_LENGTH); /* OUT */
1485 set_field(&itd->transact[i], ehci->ipacket.actual_length,
1486 ITD_XACT_LENGTH); /* IN */
1488 if (itd->transact[i] & ITD_XACT_IOC) {
1489 ehci_raise_irq(ehci, USBSTS_INT);
1491 itd->transact[i] &= ~ITD_XACT_ACTIVE;
1495 return xfers ? 0 : -1;
1499 /* This state is the entry point for asynchronous schedule
1500 * processing. Entry here consitutes a EHCI start event state (4.8.5)
1502 static int ehci_state_waitlisthead(EHCIState *ehci, int async)
1507 uint32_t entry = ehci->asynclistaddr;
1509 /* set reclamation flag at start event (4.8.6) */
1511 ehci_set_usbsts(ehci, USBSTS_REC);
1514 ehci_queues_rip_unused(ehci, async);
1516 /* Find the head of the list (4.9.1.1) */
1517 for(i = 0; i < MAX_QH; i++) {
1518 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &qh,
1519 sizeof(EHCIqh) >> 2) < 0) {
1522 ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
1524 if (qh.epchar & QH_EPCHAR_H) {
1526 entry |= (NLPTR_TYPE_QH << 1);
1529 ehci_set_fetch_addr(ehci, async, entry);
1530 ehci_set_state(ehci, async, EST_FETCHENTRY);
1536 if (entry == ehci->asynclistaddr) {
1541 /* no head found for list. */
1543 ehci_set_state(ehci, async, EST_ACTIVE);
1550 /* This state is the entry point for periodic schedule processing as
1551 * well as being a continuation state for async processing.
1553 static int ehci_state_fetchentry(EHCIState *ehci, int async)
1556 uint32_t entry = ehci_get_fetch_addr(ehci, async);
1558 if (NLPTR_TBIT(entry)) {
1559 ehci_set_state(ehci, async, EST_ACTIVE);
1563 /* section 4.8, only QH in async schedule */
1564 if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
1565 fprintf(stderr, "non queue head request in async schedule\n");
1569 switch (NLPTR_TYPE_GET(entry)) {
1571 ehci_set_state(ehci, async, EST_FETCHQH);
1575 case NLPTR_TYPE_ITD:
1576 ehci_set_state(ehci, async, EST_FETCHITD);
1580 case NLPTR_TYPE_STITD:
1581 ehci_set_state(ehci, async, EST_FETCHSITD);
1586 /* TODO: handle FSTN type */
1587 fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
1588 "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
1596 static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)
1602 entry = ehci_get_fetch_addr(ehci, async);
1603 q = ehci_find_queue_by_qh(ehci, entry, async);
1605 q = ehci_alloc_queue(ehci, entry, async);
1610 /* we are going in circles -- stop processing */
1611 ehci_set_state(ehci, async, EST_ACTIVE);
1616 if (get_dwords(ehci, NLPTR_GET(q->qhaddr),
1617 (uint32_t *) &qh, sizeof(EHCIqh) >> 2) < 0) {
1621 ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &qh);
1624 * The overlay area of the qh should never be changed by the guest,
1625 * except when idle, in which case the reset is a nop.
1627 if (!ehci_verify_qh(q, &qh)) {
1628 if (ehci_reset_queue(q) > 0) {
1629 ehci_trace_guest_bug(ehci, "guest updated active QH");
1634 q->transact_ctr = get_field(q->qh.epcap, QH_EPCAP_MULT);
1635 if (q->transact_ctr == 0) { /* Guest bug in some versions of windows */
1636 q->transact_ctr = 4;
1639 if (q->dev == NULL) {
1640 q->dev = ehci_find_device(q->ehci,
1641 get_field(q->qh.epchar, QH_EPCHAR_DEVADDR));
1644 if (async && (q->qh.epchar & QH_EPCHAR_H)) {
1646 /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
1647 if (ehci->usbsts & USBSTS_REC) {
1648 ehci_clear_usbsts(ehci, USBSTS_REC);
1650 DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
1651 " - done processing\n", q->qhaddr);
1652 ehci_set_state(ehci, async, EST_ACTIVE);
1659 if (q->qhaddr != q->qh.next) {
1660 DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
1662 q->qh.epchar & QH_EPCHAR_H,
1663 q->qh.token & QTD_TOKEN_HALT,
1664 q->qh.token & QTD_TOKEN_ACTIVE,
1669 if (q->qh.token & QTD_TOKEN_HALT) {
1670 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1672 } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&
1673 (NLPTR_TBIT(q->qh.current_qtd) == 0)) {
1674 q->qtdaddr = q->qh.current_qtd;
1675 ehci_set_state(ehci, async, EST_FETCHQTD);
1678 /* EHCI spec version 1.0 Section 4.10.2 */
1679 ehci_set_state(ehci, async, EST_ADVANCEQUEUE);
1686 static int ehci_state_fetchitd(EHCIState *ehci, int async)
1692 entry = ehci_get_fetch_addr(ehci, async);
1694 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1695 sizeof(EHCIitd) >> 2) < 0) {
1698 ehci_trace_itd(ehci, entry, &itd);
1700 if (ehci_process_itd(ehci, &itd, entry) != 0) {
1704 put_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1705 sizeof(EHCIitd) >> 2);
1706 ehci_set_fetch_addr(ehci, async, itd.next);
1707 ehci_set_state(ehci, async, EST_FETCHENTRY);
1712 static int ehci_state_fetchsitd(EHCIState *ehci, int async)
1718 entry = ehci_get_fetch_addr(ehci, async);
1720 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *)&sitd,
1721 sizeof(EHCIsitd) >> 2) < 0) {
1724 ehci_trace_sitd(ehci, entry, &sitd);
1726 if (!(sitd.results & SITD_RESULTS_ACTIVE)) {
1727 /* siTD is not active, nothing to do */;
1729 /* TODO: split transfers are not implemented */
1730 fprintf(stderr, "WARNING: Skipping active siTD\n");
1733 ehci_set_fetch_addr(ehci, async, sitd.next);
1734 ehci_set_state(ehci, async, EST_FETCHENTRY);
1738 /* Section 4.10.2 - paragraph 3 */
1739 static int ehci_state_advqueue(EHCIQueue *q)
1742 /* TO-DO: 4.10.2 - paragraph 2
1743 * if I-bit is set to 1 and QH is not active
1744 * go to horizontal QH
1747 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1753 * want data and alt-next qTD is valid
1755 if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
1756 (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
1757 q->qtdaddr = q->qh.altnext_qtd;
1758 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1763 } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {
1764 q->qtdaddr = q->qh.next_qtd;
1765 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1768 * no valid qTD, try next QH
1771 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1777 /* Section 4.10.2 - paragraph 4 */
1778 static int ehci_state_fetchqtd(EHCIQueue *q)
1784 if (get_dwords(q->ehci, NLPTR_GET(q->qtdaddr), (uint32_t *) &qtd,
1785 sizeof(EHCIqtd) >> 2) < 0) {
1788 ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);
1790 p = QTAILQ_FIRST(&q->packets);
1792 if (!ehci_verify_qtd(p, &qtd)) {
1793 ehci_cancel_queue(q);
1794 if (qtd.token & QTD_TOKEN_ACTIVE) {
1795 ehci_trace_guest_bug(q->ehci, "guest updated active qTD");
1800 ehci_qh_do_overlay(q);
1804 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1805 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1806 } else if (p != NULL) {
1808 case EHCI_ASYNC_NONE:
1809 case EHCI_ASYNC_INITIALIZED:
1810 /* Not yet executed (MULT), or previously nacked (int) packet */
1811 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1813 case EHCI_ASYNC_INFLIGHT:
1814 /* Check if the guest has added new tds to the queue */
1815 again = ehci_fill_queue(QTAILQ_LAST(&q->packets, pkts_head));
1816 /* Unfinished async handled packet, go horizontal */
1817 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1819 case EHCI_ASYNC_FINISHED:
1820 /* Complete executing of the packet */
1821 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1825 p = ehci_alloc_packet(q);
1826 p->qtdaddr = q->qtdaddr;
1828 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1834 static int ehci_state_horizqh(EHCIQueue *q)
1838 if (ehci_get_fetch_addr(q->ehci, q->async) != q->qh.next) {
1839 ehci_set_fetch_addr(q->ehci, q->async, q->qh.next);
1840 ehci_set_state(q->ehci, q->async, EST_FETCHENTRY);
1843 ehci_set_state(q->ehci, q->async, EST_ACTIVE);
1849 /* Returns "again" */
1850 static int ehci_fill_queue(EHCIPacket *p)
1852 USBEndpoint *ep = p->packet.ep;
1853 EHCIQueue *q = p->queue;
1854 EHCIqtd qtd = p->qtd;
1858 if (NLPTR_TBIT(qtd.next) != 0) {
1863 * Detect circular td lists, Windows creates these, counting on the
1864 * active bit going low after execution to make the queue stop.
1866 QTAILQ_FOREACH(p, &q->packets, next) {
1867 if (p->qtdaddr == qtdaddr) {
1871 if (get_dwords(q->ehci, NLPTR_GET(qtdaddr),
1872 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2) < 0) {
1875 ehci_trace_qtd(q, NLPTR_GET(qtdaddr), &qtd);
1876 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1879 if (!ehci_verify_pid(q, &qtd)) {
1880 ehci_trace_guest_bug(q->ehci, "guest queued token with wrong pid");
1883 p = ehci_alloc_packet(q);
1884 p->qtdaddr = qtdaddr;
1886 if (ehci_execute(p, "queue") == -1) {
1889 assert(p->packet.status == USB_RET_ASYNC);
1890 p->async = EHCI_ASYNC_INFLIGHT;
1893 usb_device_flush_ep_queue(ep->dev, ep);
1897 static int ehci_state_execute(EHCIQueue *q)
1899 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1903 assert(p->qtdaddr == q->qtdaddr);
1905 if (ehci_qh_do_overlay(q) != 0) {
1909 // TODO verify enough time remains in the uframe as in 4.4.1.1
1910 // TODO write back ptr to async list when done or out of time
1912 /* 4.10.3, bottom of page 82, go horizontal on transaction counter == 0 */
1913 if (!q->async && q->transact_ctr == 0) {
1914 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1920 ehci_set_usbsts(q->ehci, USBSTS_REC);
1923 again = ehci_execute(p, "process");
1927 if (p->packet.status == USB_RET_ASYNC) {
1929 trace_usb_ehci_packet_action(p->queue, p, "async");
1930 p->async = EHCI_ASYNC_INFLIGHT;
1931 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1933 again = ehci_fill_queue(p);
1940 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1947 static int ehci_state_executing(EHCIQueue *q)
1949 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1952 assert(p->qtdaddr == q->qtdaddr);
1954 ehci_execute_complete(q);
1957 if (!q->async && q->transact_ctr > 0) {
1962 if (p->packet.status == USB_RET_NAK) {
1963 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1965 ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
1973 static int ehci_state_writeback(EHCIQueue *q)
1975 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1976 uint32_t *qtd, addr;
1979 /* Write back the QTD from the QH area */
1981 assert(p->qtdaddr == q->qtdaddr);
1983 ehci_trace_qtd(q, NLPTR_GET(p->qtdaddr), (EHCIqtd *) &q->qh.next_qtd);
1984 qtd = (uint32_t *) &q->qh.next_qtd;
1985 addr = NLPTR_GET(p->qtdaddr);
1986 put_dwords(q->ehci, addr + 2 * sizeof(uint32_t), qtd + 2, 2);
1987 ehci_free_packet(p);
1990 * EHCI specs say go horizontal here.
1992 * We can also advance the queue here for performance reasons. We
1993 * need to take care to only take that shortcut in case we've
1994 * processed the qtd just written back without errors, i.e. halt
1997 if (q->qh.token & QTD_TOKEN_HALT) {
1998 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
2001 ehci_set_state(q->ehci, q->async, EST_ADVANCEQUEUE);
2008 * This is the state machine that is common to both async and periodic
2011 static void ehci_advance_state(EHCIState *ehci, int async)
2013 EHCIQueue *q = NULL;
2018 switch(ehci_get_state(ehci, async)) {
2019 case EST_WAITLISTHEAD:
2020 again = ehci_state_waitlisthead(ehci, async);
2023 case EST_FETCHENTRY:
2024 again = ehci_state_fetchentry(ehci, async);
2028 q = ehci_state_fetchqh(ehci, async);
2030 assert(q->async == async);
2038 again = ehci_state_fetchitd(ehci, async);
2043 again = ehci_state_fetchsitd(ehci, async);
2047 case EST_ADVANCEQUEUE:
2049 again = ehci_state_advqueue(q);
2054 again = ehci_state_fetchqtd(q);
2057 case EST_HORIZONTALQH:
2059 again = ehci_state_horizqh(q);
2064 again = ehci_state_execute(q);
2066 ehci->async_stepdown = 0;
2073 ehci->async_stepdown = 0;
2075 again = ehci_state_executing(q);
2080 again = ehci_state_writeback(q);
2082 ehci->periodic_sched_active = PERIODIC_ACTIVE;
2087 fprintf(stderr, "Bad state!\n");
2089 g_assert_not_reached();
2093 if (again < 0 || itd_count > 16) {
2094 /* TODO: notify guest (raise HSE irq?) */
2095 fprintf(stderr, "processing error - resetting ehci HC\n");
2103 static void ehci_advance_async_state(EHCIState *ehci)
2105 const int async = 1;
2107 switch(ehci_get_state(ehci, async)) {
2109 if (!ehci_async_enabled(ehci)) {
2112 ehci_set_state(ehci, async, EST_ACTIVE);
2113 // No break, fall through to ACTIVE
2116 if (!ehci_async_enabled(ehci)) {
2117 ehci_queues_rip_all(ehci, async);
2118 ehci_set_state(ehci, async, EST_INACTIVE);
2122 /* make sure guest has acknowledged the doorbell interrupt */
2123 /* TO-DO: is this really needed? */
2124 if (ehci->usbsts & USBSTS_IAA) {
2125 DPRINTF("IAA status bit still set.\n");
2129 /* check that address register has been set */
2130 if (ehci->asynclistaddr == 0) {
2134 ehci_set_state(ehci, async, EST_WAITLISTHEAD);
2135 ehci_advance_state(ehci, async);
2137 /* If the doorbell is set, the guest wants to make a change to the
2138 * schedule. The host controller needs to release cached data.
2141 if (ehci->usbcmd & USBCMD_IAAD) {
2142 /* Remove all unseen qhs from the async qhs queue */
2143 ehci_queues_rip_unseen(ehci, async);
2144 trace_usb_ehci_doorbell_ack();
2145 ehci->usbcmd &= ~USBCMD_IAAD;
2146 ehci_raise_irq(ehci, USBSTS_IAA);
2151 /* this should only be due to a developer mistake */
2152 fprintf(stderr, "ehci: Bad asynchronous state %d. "
2153 "Resetting to active\n", ehci->astate);
2154 g_assert_not_reached();
2158 static void ehci_advance_periodic_state(EHCIState *ehci)
2162 const int async = 0;
2166 switch(ehci_get_state(ehci, async)) {
2168 if (!(ehci->frindex & 7) && ehci_periodic_enabled(ehci)) {
2169 ehci_set_state(ehci, async, EST_ACTIVE);
2170 // No break, fall through to ACTIVE
2175 if (!(ehci->frindex & 7) && !ehci_periodic_enabled(ehci)) {
2176 ehci_queues_rip_all(ehci, async);
2177 ehci_set_state(ehci, async, EST_INACTIVE);
2181 list = ehci->periodiclistbase & 0xfffff000;
2182 /* check that register has been set */
2186 list |= ((ehci->frindex & 0x1ff8) >> 1);
2188 if (get_dwords(ehci, list, &entry, 1) < 0) {
2192 DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
2193 ehci->frindex / 8, list, entry);
2194 ehci_set_fetch_addr(ehci, async,entry);
2195 ehci_set_state(ehci, async, EST_FETCHENTRY);
2196 ehci_advance_state(ehci, async);
2197 ehci_queues_rip_unused(ehci, async);
2201 /* this should only be due to a developer mistake */
2202 fprintf(stderr, "ehci: Bad periodic state %d. "
2203 "Resetting to active\n", ehci->pstate);
2204 g_assert_not_reached();
2208 static void ehci_update_frindex(EHCIState *ehci, int uframes)
2212 if (!ehci_enabled(ehci) && ehci->pstate == EST_INACTIVE) {
2216 for (i = 0; i < uframes; i++) {
2219 if (ehci->frindex == 0x00002000) {
2220 ehci_raise_irq(ehci, USBSTS_FLR);
2223 if (ehci->frindex == 0x00004000) {
2224 ehci_raise_irq(ehci, USBSTS_FLR);
2226 if (ehci->usbsts_frindex >= 0x00004000) {
2227 ehci->usbsts_frindex -= 0x00004000;
2229 ehci->usbsts_frindex = 0;
2235 static void ehci_frame_timer(void *opaque)
2237 EHCIState *ehci = opaque;
2239 int64_t expire_time, t_now;
2240 uint64_t ns_elapsed;
2241 int uframes, skipped_uframes;
2244 t_now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2245 ns_elapsed = t_now - ehci->last_run_ns;
2246 uframes = ns_elapsed / UFRAME_TIMER_NS;
2248 if (ehci_periodic_enabled(ehci) || ehci->pstate != EST_INACTIVE) {
2251 if (uframes > (ehci->maxframes * 8)) {
2252 skipped_uframes = uframes - (ehci->maxframes * 8);
2253 ehci_update_frindex(ehci, skipped_uframes);
2254 ehci->last_run_ns += UFRAME_TIMER_NS * skipped_uframes;
2255 uframes -= skipped_uframes;
2256 DPRINTF("WARNING - EHCI skipped %d uframes\n", skipped_uframes);
2259 for (i = 0; i < uframes; i++) {
2261 * If we're running behind schedule, we should not catch up
2262 * too fast, as that will make some guests unhappy:
2263 * 1) We must process a minimum of MIN_UFR_PER_TICK frames,
2264 * otherwise we will never catch up
2265 * 2) Process frames until the guest has requested an irq (IOC)
2267 if (i >= MIN_UFR_PER_TICK) {
2268 ehci_commit_irq(ehci);
2269 if ((ehci->usbsts & USBINTR_MASK) & ehci->usbintr) {
2273 if (ehci->periodic_sched_active) {
2274 ehci->periodic_sched_active--;
2276 ehci_update_frindex(ehci, 1);
2277 if ((ehci->frindex & 7) == 0) {
2278 ehci_advance_periodic_state(ehci);
2280 ehci->last_run_ns += UFRAME_TIMER_NS;
2283 ehci->periodic_sched_active = 0;
2284 ehci_update_frindex(ehci, uframes);
2285 ehci->last_run_ns += UFRAME_TIMER_NS * uframes;
2288 if (ehci->periodic_sched_active) {
2289 ehci->async_stepdown = 0;
2290 } else if (ehci->async_stepdown < ehci->maxframes / 2) {
2291 ehci->async_stepdown++;
2294 /* Async is not inside loop since it executes everything it can once
2297 if (ehci_async_enabled(ehci) || ehci->astate != EST_INACTIVE) {
2299 ehci_advance_async_state(ehci);
2302 ehci_commit_irq(ehci);
2303 if (ehci->usbsts_pending) {
2305 ehci->async_stepdown = 0;
2308 if (ehci_enabled(ehci) && (ehci->usbintr & USBSTS_FLR)) {
2313 /* If we've raised int, we speed up the timer, so that we quickly
2314 * notice any new packets queued up in response */
2315 if (ehci->int_req_by_async && (ehci->usbsts & USBSTS_INT)) {
2316 expire_time = t_now +
2317 NANOSECONDS_PER_SECOND / (FRAME_TIMER_FREQ * 4);
2318 ehci->int_req_by_async = false;
2320 expire_time = t_now + (NANOSECONDS_PER_SECOND
2321 * (ehci->async_stepdown+1) / FRAME_TIMER_FREQ);
2323 timer_mod(ehci->frame_timer, expire_time);
2327 static const MemoryRegionOps ehci_mmio_caps_ops = {
2328 .read = ehci_caps_read,
2329 .write = ehci_caps_write,
2330 .valid.min_access_size = 1,
2331 .valid.max_access_size = 4,
2332 .impl.min_access_size = 1,
2333 .impl.max_access_size = 1,
2334 .endianness = DEVICE_LITTLE_ENDIAN,
2337 static const MemoryRegionOps ehci_mmio_opreg_ops = {
2338 .read = ehci_opreg_read,
2339 .write = ehci_opreg_write,
2340 .valid.min_access_size = 4,
2341 .valid.max_access_size = 4,
2342 .endianness = DEVICE_LITTLE_ENDIAN,
2345 static const MemoryRegionOps ehci_mmio_port_ops = {
2346 .read = ehci_port_read,
2347 .write = ehci_port_write,
2348 .valid.min_access_size = 4,
2349 .valid.max_access_size = 4,
2350 .endianness = DEVICE_LITTLE_ENDIAN,
2353 static USBPortOps ehci_port_ops = {
2354 .attach = ehci_attach,
2355 .detach = ehci_detach,
2356 .child_detach = ehci_child_detach,
2357 .wakeup = ehci_wakeup,
2358 .complete = ehci_async_complete_packet,
2361 static USBBusOps ehci_bus_ops_companion = {
2362 .register_companion = ehci_register_companion,
2363 .wakeup_endpoint = ehci_wakeup_endpoint,
2365 static USBBusOps ehci_bus_ops_standalone = {
2366 .wakeup_endpoint = ehci_wakeup_endpoint,
2369 static void usb_ehci_pre_save(void *opaque)
2371 EHCIState *ehci = opaque;
2372 uint32_t new_frindex;
2374 /* Round down frindex to a multiple of 8 for migration compatibility */
2375 new_frindex = ehci->frindex & ~7;
2376 ehci->last_run_ns -= (ehci->frindex - new_frindex) * UFRAME_TIMER_NS;
2377 ehci->frindex = new_frindex;
2380 static int usb_ehci_post_load(void *opaque, int version_id)
2382 EHCIState *s = opaque;
2385 for (i = 0; i < NB_PORTS; i++) {
2386 USBPort *companion = s->companion_ports[i];
2387 if (companion == NULL) {
2390 if (s->portsc[i] & PORTSC_POWNER) {
2391 companion->dev = s->ports[i].dev;
2393 companion->dev = NULL;
2400 static void usb_ehci_vm_state_change(void *opaque, int running, RunState state)
2402 EHCIState *ehci = opaque;
2405 * We don't migrate the EHCIQueue-s, instead we rebuild them for the
2406 * schedule in guest memory. We must do the rebuilt ASAP, so that
2407 * USB-devices which have async handled packages have a packet in the
2408 * ep queue to match the completion with.
2410 if (state == RUN_STATE_RUNNING) {
2411 ehci_advance_async_state(ehci);
2415 * The schedule rebuilt from guest memory could cause the migration dest
2416 * to miss a QH unlink, and fail to cancel packets, since the unlinked QH
2417 * will never have existed on the destination. Therefor we must flush the
2418 * async schedule on savevm to catch any not yet noticed unlinks.
2420 if (state == RUN_STATE_SAVE_VM) {
2421 ehci_advance_async_state(ehci);
2422 ehci_queues_rip_unseen(ehci, 1);
2426 const VMStateDescription vmstate_ehci = {
2427 .name = "ehci-core",
2429 .minimum_version_id = 1,
2430 .pre_save = usb_ehci_pre_save,
2431 .post_load = usb_ehci_post_load,
2432 .fields = (VMStateField[]) {
2433 /* mmio registers */
2434 VMSTATE_UINT32(usbcmd, EHCIState),
2435 VMSTATE_UINT32(usbsts, EHCIState),
2436 VMSTATE_UINT32_V(usbsts_pending, EHCIState, 2),
2437 VMSTATE_UINT32_V(usbsts_frindex, EHCIState, 2),
2438 VMSTATE_UINT32(usbintr, EHCIState),
2439 VMSTATE_UINT32(frindex, EHCIState),
2440 VMSTATE_UINT32(ctrldssegment, EHCIState),
2441 VMSTATE_UINT32(periodiclistbase, EHCIState),
2442 VMSTATE_UINT32(asynclistaddr, EHCIState),
2443 VMSTATE_UINT32(configflag, EHCIState),
2444 VMSTATE_UINT32(portsc[0], EHCIState),
2445 VMSTATE_UINT32(portsc[1], EHCIState),
2446 VMSTATE_UINT32(portsc[2], EHCIState),
2447 VMSTATE_UINT32(portsc[3], EHCIState),
2448 VMSTATE_UINT32(portsc[4], EHCIState),
2449 VMSTATE_UINT32(portsc[5], EHCIState),
2451 VMSTATE_TIMER_PTR(frame_timer, EHCIState),
2452 VMSTATE_UINT64(last_run_ns, EHCIState),
2453 VMSTATE_UINT32(async_stepdown, EHCIState),
2454 /* schedule state */
2455 VMSTATE_UINT32(astate, EHCIState),
2456 VMSTATE_UINT32(pstate, EHCIState),
2457 VMSTATE_UINT32(a_fetch_addr, EHCIState),
2458 VMSTATE_UINT32(p_fetch_addr, EHCIState),
2459 VMSTATE_END_OF_LIST()
2463 void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)
2467 if (s->portnr > NB_PORTS) {
2468 error_setg(errp, "Too many ports! Max. port number is %d.",
2473 usb_bus_new(&s->bus, sizeof(s->bus), s->companion_enable ?
2474 &ehci_bus_ops_companion : &ehci_bus_ops_standalone, dev);
2475 for (i = 0; i < s->portnr; i++) {
2476 usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
2477 USB_SPEED_MASK_HIGH);
2478 s->ports[i].dev = 0;
2481 s->frame_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, ehci_frame_timer, s);
2482 s->async_bh = qemu_bh_new(ehci_frame_timer, s);
2485 s->vmstate = qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
2488 void usb_ehci_unrealize(EHCIState *s, DeviceState *dev, Error **errp)
2490 trace_usb_ehci_unrealize();
2492 if (s->frame_timer) {
2493 timer_del(s->frame_timer);
2494 timer_free(s->frame_timer);
2495 s->frame_timer = NULL;
2498 qemu_bh_delete(s->async_bh);
2501 ehci_queues_rip_all(s, 0);
2502 ehci_queues_rip_all(s, 1);
2504 memory_region_del_subregion(&s->mem, &s->mem_caps);
2505 memory_region_del_subregion(&s->mem, &s->mem_opreg);
2506 memory_region_del_subregion(&s->mem, &s->mem_ports);
2508 usb_bus_release(&s->bus);
2511 qemu_del_vm_change_state_handler(s->vmstate);
2515 void usb_ehci_init(EHCIState *s, DeviceState *dev)
2517 /* 2.2 host controller interface version */
2518 s->caps[0x00] = (uint8_t)(s->opregbase - s->capsbase);
2519 s->caps[0x01] = 0x00;
2520 s->caps[0x02] = 0x00;
2521 s->caps[0x03] = 0x01; /* HC version */
2522 s->caps[0x04] = s->portnr; /* Number of downstream ports */
2523 s->caps[0x05] = 0x00; /* No companion ports at present */
2524 s->caps[0x06] = 0x00;
2525 s->caps[0x07] = 0x00;
2526 s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */
2527 s->caps[0x0a] = 0x00;
2528 s->caps[0x0b] = 0x00;
2530 QTAILQ_INIT(&s->aqueues);
2531 QTAILQ_INIT(&s->pqueues);
2532 usb_packet_init(&s->ipacket);
2534 memory_region_init(&s->mem, OBJECT(dev), "ehci", MMIO_SIZE);
2535 memory_region_init_io(&s->mem_caps, OBJECT(dev), &ehci_mmio_caps_ops, s,
2536 "capabilities", CAPA_SIZE);
2537 memory_region_init_io(&s->mem_opreg, OBJECT(dev), &ehci_mmio_opreg_ops, s,
2538 "operational", s->portscbase);
2539 memory_region_init_io(&s->mem_ports, OBJECT(dev), &ehci_mmio_port_ops, s,
2540 "ports", 4 * s->portnr);
2542 memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);
2543 memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);
2544 memory_region_add_subregion(&s->mem, s->opregbase + s->portscbase,
2549 * vim: expandtab ts=4