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/hcd-ehci.h"
32 /* Capability Registers Base Address - section 2.2 */
33 #define CAPLENGTH 0x0000 /* 1-byte, 0x0001 reserved */
34 #define HCIVERSION 0x0002 /* 2-bytes, i/f version # */
35 #define HCSPARAMS 0x0004 /* 4-bytes, structural params */
36 #define HCCPARAMS 0x0008 /* 4-bytes, capability params */
37 #define EECP HCCPARAMS + 1
38 #define HCSPPORTROUTE1 0x000c
39 #define HCSPPORTROUTE2 0x0010
42 #define USBCMD_RUNSTOP (1 << 0) // run / Stop
43 #define USBCMD_HCRESET (1 << 1) // HC Reset
44 #define USBCMD_FLS (3 << 2) // Frame List Size
45 #define USBCMD_FLS_SH 2 // Frame List Size Shift
46 #define USBCMD_PSE (1 << 4) // Periodic Schedule Enable
47 #define USBCMD_ASE (1 << 5) // Asynch Schedule Enable
48 #define USBCMD_IAAD (1 << 6) // Int Asynch Advance Doorbell
49 #define USBCMD_LHCR (1 << 7) // Light Host Controller Reset
50 #define USBCMD_ASPMC (3 << 8) // Async Sched Park Mode Count
51 #define USBCMD_ASPME (1 << 11) // Async Sched Park Mode Enable
52 #define USBCMD_ITC (0x7f << 16) // Int Threshold Control
53 #define USBCMD_ITC_SH 16 // Int Threshold Control Shift
56 #define USBSTS_RO_MASK 0x0000003f
57 #define USBSTS_INT (1 << 0) // USB Interrupt
58 #define USBSTS_ERRINT (1 << 1) // Error Interrupt
59 #define USBSTS_PCD (1 << 2) // Port Change Detect
60 #define USBSTS_FLR (1 << 3) // Frame List Rollover
61 #define USBSTS_HSE (1 << 4) // Host System Error
62 #define USBSTS_IAA (1 << 5) // Interrupt on Async Advance
63 #define USBSTS_HALT (1 << 12) // HC Halted
64 #define USBSTS_REC (1 << 13) // Reclamation
65 #define USBSTS_PSS (1 << 14) // Periodic Schedule Status
66 #define USBSTS_ASS (1 << 15) // Asynchronous Schedule Status
69 * Interrupt enable bits correspond to the interrupt active bits in USBSTS
70 * so no need to redefine here.
72 #define USBINTR 0x0008
73 #define USBINTR_MASK 0x0000003f
75 #define FRINDEX 0x000c
76 #define CTRLDSSEGMENT 0x0010
77 #define PERIODICLISTBASE 0x0014
78 #define ASYNCLISTADDR 0x0018
79 #define ASYNCLISTADDR_MASK 0xffffffe0
81 #define CONFIGFLAG 0x0040
84 * Bits that are reserved or are read-only are masked out of values
85 * written to us by software
87 #define PORTSC_RO_MASK 0x007001c0
88 #define PORTSC_RWC_MASK 0x0000002a
89 #define PORTSC_WKOC_E (1 << 22) // Wake on Over Current Enable
90 #define PORTSC_WKDS_E (1 << 21) // Wake on Disconnect Enable
91 #define PORTSC_WKCN_E (1 << 20) // Wake on Connect Enable
92 #define PORTSC_PTC (15 << 16) // Port Test Control
93 #define PORTSC_PTC_SH 16 // Port Test Control shift
94 #define PORTSC_PIC (3 << 14) // Port Indicator Control
95 #define PORTSC_PIC_SH 14 // Port Indicator Control Shift
96 #define PORTSC_POWNER (1 << 13) // Port Owner
97 #define PORTSC_PPOWER (1 << 12) // Port Power
98 #define PORTSC_LINESTAT (3 << 10) // Port Line Status
99 #define PORTSC_LINESTAT_SH 10 // Port Line Status Shift
100 #define PORTSC_PRESET (1 << 8) // Port Reset
101 #define PORTSC_SUSPEND (1 << 7) // Port Suspend
102 #define PORTSC_FPRES (1 << 6) // Force Port Resume
103 #define PORTSC_OCC (1 << 5) // Over Current Change
104 #define PORTSC_OCA (1 << 4) // Over Current Active
105 #define PORTSC_PEDC (1 << 3) // Port Enable/Disable Change
106 #define PORTSC_PED (1 << 2) // Port Enable/Disable
107 #define PORTSC_CSC (1 << 1) // Connect Status Change
108 #define PORTSC_CONNECT (1 << 0) // Current Connect Status
110 #define FRAME_TIMER_FREQ 1000
111 #define FRAME_TIMER_NS (1000000000 / FRAME_TIMER_FREQ)
113 #define NB_MAXINTRATE 8 // Max rate at which controller issues ints
114 #define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction
115 #define MAX_QH 100 // Max allowable queue heads in a chain
116 #define MIN_FR_PER_TICK 3 // Min frames to process when catching up
117 #define PERIODIC_ACTIVE 64
119 /* Internal periodic / asynchronous schedule state machine states
126 /* The following states are internal to the state machine function
140 /* macros for accessing fields within next link pointer entry */
141 #define NLPTR_GET(x) ((x) & 0xffffffe0)
142 #define NLPTR_TYPE_GET(x) (((x) >> 1) & 3)
143 #define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid
145 /* link pointer types */
146 #define NLPTR_TYPE_ITD 0 // isoc xfer descriptor
147 #define NLPTR_TYPE_QH 1 // queue head
148 #define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor
149 #define NLPTR_TYPE_FSTN 3 // frame span traversal node
151 #define SET_LAST_RUN_CLOCK(s) \
152 (s)->last_run_ns = qemu_get_clock_ns(vm_clock);
154 /* nifty macros from Arnon's EHCI version */
155 #define get_field(data, field) \
156 (((data) & field##_MASK) >> field##_SH)
158 #define set_field(data, newval, field) do { \
159 uint32_t val = *data; \
160 val &= ~ field##_MASK; \
161 val |= ((newval) << field##_SH) & field##_MASK; \
165 static const char *ehci_state_names[] = {
166 [EST_INACTIVE] = "INACTIVE",
167 [EST_ACTIVE] = "ACTIVE",
168 [EST_EXECUTING] = "EXECUTING",
169 [EST_SLEEPING] = "SLEEPING",
170 [EST_WAITLISTHEAD] = "WAITLISTHEAD",
171 [EST_FETCHENTRY] = "FETCH ENTRY",
172 [EST_FETCHQH] = "FETCH QH",
173 [EST_FETCHITD] = "FETCH ITD",
174 [EST_ADVANCEQUEUE] = "ADVANCEQUEUE",
175 [EST_FETCHQTD] = "FETCH QTD",
176 [EST_EXECUTE] = "EXECUTE",
177 [EST_WRITEBACK] = "WRITEBACK",
178 [EST_HORIZONTALQH] = "HORIZONTALQH",
181 static const char *ehci_mmio_names[] = {
184 [USBINTR] = "USBINTR",
185 [FRINDEX] = "FRINDEX",
186 [PERIODICLISTBASE] = "P-LIST BASE",
187 [ASYNCLISTADDR] = "A-LIST ADDR",
188 [CONFIGFLAG] = "CONFIGFLAG",
191 static int ehci_state_executing(EHCIQueue *q);
192 static int ehci_state_writeback(EHCIQueue *q);
193 static int ehci_state_advqueue(EHCIQueue *q);
194 static int ehci_fill_queue(EHCIPacket *p);
196 static const char *nr2str(const char **n, size_t len, uint32_t nr)
198 if (nr < len && n[nr] != NULL) {
205 static const char *state2str(uint32_t state)
207 return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
210 static const char *addr2str(hwaddr addr)
212 return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
215 static void ehci_trace_usbsts(uint32_t mask, int state)
218 if (mask & USBSTS_INT) {
219 trace_usb_ehci_usbsts("INT", state);
221 if (mask & USBSTS_ERRINT) {
222 trace_usb_ehci_usbsts("ERRINT", state);
224 if (mask & USBSTS_PCD) {
225 trace_usb_ehci_usbsts("PCD", state);
227 if (mask & USBSTS_FLR) {
228 trace_usb_ehci_usbsts("FLR", state);
230 if (mask & USBSTS_HSE) {
231 trace_usb_ehci_usbsts("HSE", state);
233 if (mask & USBSTS_IAA) {
234 trace_usb_ehci_usbsts("IAA", state);
238 if (mask & USBSTS_HALT) {
239 trace_usb_ehci_usbsts("HALT", state);
241 if (mask & USBSTS_REC) {
242 trace_usb_ehci_usbsts("REC", state);
244 if (mask & USBSTS_PSS) {
245 trace_usb_ehci_usbsts("PSS", state);
247 if (mask & USBSTS_ASS) {
248 trace_usb_ehci_usbsts("ASS", state);
252 static inline void ehci_set_usbsts(EHCIState *s, int mask)
254 if ((s->usbsts & mask) == mask) {
257 ehci_trace_usbsts(mask, 1);
261 static inline void ehci_clear_usbsts(EHCIState *s, int mask)
263 if ((s->usbsts & mask) == 0) {
266 ehci_trace_usbsts(mask, 0);
270 /* update irq line */
271 static inline void ehci_update_irq(EHCIState *s)
275 if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
279 trace_usb_ehci_irq(level, s->frindex, s->usbsts, s->usbintr);
280 qemu_set_irq(s->irq, level);
283 /* flag interrupt condition */
284 static inline void ehci_raise_irq(EHCIState *s, int intr)
286 if (intr & (USBSTS_PCD | USBSTS_FLR | USBSTS_HSE)) {
290 s->usbsts_pending |= intr;
295 * Commit pending interrupts (added via ehci_raise_irq),
296 * at the rate allowed by "Interrupt Threshold Control".
298 static inline void ehci_commit_irq(EHCIState *s)
302 if (!s->usbsts_pending) {
305 if (s->usbsts_frindex > s->frindex) {
309 itc = (s->usbcmd >> 16) & 0xff;
310 s->usbsts |= s->usbsts_pending;
311 s->usbsts_pending = 0;
312 s->usbsts_frindex = s->frindex + itc;
316 static void ehci_update_halt(EHCIState *s)
318 if (s->usbcmd & USBCMD_RUNSTOP) {
319 ehci_clear_usbsts(s, USBSTS_HALT);
321 if (s->astate == EST_INACTIVE && s->pstate == EST_INACTIVE) {
322 ehci_set_usbsts(s, USBSTS_HALT);
327 static void ehci_set_state(EHCIState *s, int async, int state)
330 trace_usb_ehci_state("async", state2str(state));
332 if (s->astate == EST_INACTIVE) {
333 ehci_clear_usbsts(s, USBSTS_ASS);
336 ehci_set_usbsts(s, USBSTS_ASS);
339 trace_usb_ehci_state("periodic", state2str(state));
341 if (s->pstate == EST_INACTIVE) {
342 ehci_clear_usbsts(s, USBSTS_PSS);
345 ehci_set_usbsts(s, USBSTS_PSS);
350 static int ehci_get_state(EHCIState *s, int async)
352 return async ? s->astate : s->pstate;
355 static void ehci_set_fetch_addr(EHCIState *s, int async, uint32_t addr)
358 s->a_fetch_addr = addr;
360 s->p_fetch_addr = addr;
364 static int ehci_get_fetch_addr(EHCIState *s, int async)
366 return async ? s->a_fetch_addr : s->p_fetch_addr;
369 static void ehci_trace_qh(EHCIQueue *q, hwaddr addr, EHCIqh *qh)
371 /* need three here due to argument count limits */
372 trace_usb_ehci_qh_ptrs(q, addr, qh->next,
373 qh->current_qtd, qh->next_qtd, qh->altnext_qtd);
374 trace_usb_ehci_qh_fields(addr,
375 get_field(qh->epchar, QH_EPCHAR_RL),
376 get_field(qh->epchar, QH_EPCHAR_MPLEN),
377 get_field(qh->epchar, QH_EPCHAR_EPS),
378 get_field(qh->epchar, QH_EPCHAR_EP),
379 get_field(qh->epchar, QH_EPCHAR_DEVADDR));
380 trace_usb_ehci_qh_bits(addr,
381 (bool)(qh->epchar & QH_EPCHAR_C),
382 (bool)(qh->epchar & QH_EPCHAR_H),
383 (bool)(qh->epchar & QH_EPCHAR_DTC),
384 (bool)(qh->epchar & QH_EPCHAR_I));
387 static void ehci_trace_qtd(EHCIQueue *q, hwaddr addr, EHCIqtd *qtd)
389 /* need three here due to argument count limits */
390 trace_usb_ehci_qtd_ptrs(q, addr, qtd->next, qtd->altnext);
391 trace_usb_ehci_qtd_fields(addr,
392 get_field(qtd->token, QTD_TOKEN_TBYTES),
393 get_field(qtd->token, QTD_TOKEN_CPAGE),
394 get_field(qtd->token, QTD_TOKEN_CERR),
395 get_field(qtd->token, QTD_TOKEN_PID));
396 trace_usb_ehci_qtd_bits(addr,
397 (bool)(qtd->token & QTD_TOKEN_IOC),
398 (bool)(qtd->token & QTD_TOKEN_ACTIVE),
399 (bool)(qtd->token & QTD_TOKEN_HALT),
400 (bool)(qtd->token & QTD_TOKEN_BABBLE),
401 (bool)(qtd->token & QTD_TOKEN_XACTERR));
404 static void ehci_trace_itd(EHCIState *s, hwaddr addr, EHCIitd *itd)
406 trace_usb_ehci_itd(addr, itd->next,
407 get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT),
408 get_field(itd->bufptr[2], ITD_BUFPTR_MULT),
409 get_field(itd->bufptr[0], ITD_BUFPTR_EP),
410 get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR));
413 static void ehci_trace_sitd(EHCIState *s, hwaddr addr,
416 trace_usb_ehci_sitd(addr, sitd->next,
417 (bool)(sitd->results & SITD_RESULTS_ACTIVE));
420 static void ehci_trace_guest_bug(EHCIState *s, const char *message)
422 trace_usb_ehci_guest_bug(message);
423 fprintf(stderr, "ehci warning: %s\n", message);
426 static inline bool ehci_enabled(EHCIState *s)
428 return s->usbcmd & USBCMD_RUNSTOP;
431 static inline bool ehci_async_enabled(EHCIState *s)
433 return ehci_enabled(s) && (s->usbcmd & USBCMD_ASE);
436 static inline bool ehci_periodic_enabled(EHCIState *s)
438 return ehci_enabled(s) && (s->usbcmd & USBCMD_PSE);
441 /* Finish executing and writeback a packet outside of the regular
442 fetchqh -> fetchqtd -> execute -> writeback cycle */
443 static void ehci_writeback_async_complete_packet(EHCIPacket *p)
445 EHCIQueue *q = p->queue;
448 state = ehci_get_state(q->ehci, q->async);
449 ehci_state_executing(q);
450 ehci_state_writeback(q); /* Frees the packet! */
451 if (!(q->qh.token & QTD_TOKEN_HALT)) {
452 ehci_state_advqueue(q);
454 ehci_set_state(q->ehci, q->async, state);
457 /* packet management */
459 static EHCIPacket *ehci_alloc_packet(EHCIQueue *q)
463 p = g_new0(EHCIPacket, 1);
465 usb_packet_init(&p->packet);
466 QTAILQ_INSERT_TAIL(&q->packets, p, next);
467 trace_usb_ehci_packet_action(p->queue, p, "alloc");
471 static void ehci_free_packet(EHCIPacket *p)
473 if (p->async == EHCI_ASYNC_FINISHED) {
474 ehci_writeback_async_complete_packet(p);
477 trace_usb_ehci_packet_action(p->queue, p, "free");
478 if (p->async == EHCI_ASYNC_INITIALIZED) {
479 usb_packet_unmap(&p->packet, &p->sgl);
480 qemu_sglist_destroy(&p->sgl);
482 if (p->async == EHCI_ASYNC_INFLIGHT) {
483 usb_cancel_packet(&p->packet);
484 usb_packet_unmap(&p->packet, &p->sgl);
485 qemu_sglist_destroy(&p->sgl);
487 QTAILQ_REMOVE(&p->queue->packets, p, next);
488 usb_packet_cleanup(&p->packet);
492 /* queue management */
494 static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, uint32_t addr, int async)
496 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
499 q = g_malloc0(sizeof(*q));
503 QTAILQ_INIT(&q->packets);
504 QTAILQ_INSERT_HEAD(head, q, next);
505 trace_usb_ehci_queue_action(q, "alloc");
509 static int ehci_cancel_queue(EHCIQueue *q)
514 p = QTAILQ_FIRST(&q->packets);
519 trace_usb_ehci_queue_action(q, "cancel");
523 } while ((p = QTAILQ_FIRST(&q->packets)) != NULL);
527 static int ehci_reset_queue(EHCIQueue *q)
531 trace_usb_ehci_queue_action(q, "reset");
532 packets = ehci_cancel_queue(q);
538 static void ehci_free_queue(EHCIQueue *q, const char *warn)
540 EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
543 trace_usb_ehci_queue_action(q, "free");
544 cancelled = ehci_cancel_queue(q);
545 if (warn && cancelled > 0) {
546 ehci_trace_guest_bug(q->ehci, warn);
548 QTAILQ_REMOVE(head, q, next);
552 static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
555 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
558 QTAILQ_FOREACH(q, head, next) {
559 if (addr == q->qhaddr) {
566 static void ehci_queues_rip_unused(EHCIState *ehci, int async)
568 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
569 const char *warn = async ? "guest unlinked busy QH" : NULL;
570 uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
573 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
576 q->ts = ehci->last_run_ns;
579 if (ehci->last_run_ns < q->ts + maxage) {
582 ehci_free_queue(q, warn);
586 static void ehci_queues_rip_unseen(EHCIState *ehci, int async)
588 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
591 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
593 ehci_free_queue(q, NULL);
598 static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
600 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
603 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
607 ehci_free_queue(q, NULL);
611 static void ehci_queues_rip_all(EHCIState *ehci, int async)
613 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
614 const char *warn = async ? "guest stopped busy async schedule" : NULL;
617 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
618 ehci_free_queue(q, warn);
622 /* Attach or detach a device on root hub */
624 static void ehci_attach(USBPort *port)
626 EHCIState *s = port->opaque;
627 uint32_t *portsc = &s->portsc[port->index];
628 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
630 trace_usb_ehci_port_attach(port->index, owner, port->dev->product_desc);
632 if (*portsc & PORTSC_POWNER) {
633 USBPort *companion = s->companion_ports[port->index];
634 companion->dev = port->dev;
635 companion->ops->attach(companion);
639 *portsc |= PORTSC_CONNECT;
640 *portsc |= PORTSC_CSC;
642 ehci_raise_irq(s, USBSTS_PCD);
646 static void ehci_detach(USBPort *port)
648 EHCIState *s = port->opaque;
649 uint32_t *portsc = &s->portsc[port->index];
650 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
652 trace_usb_ehci_port_detach(port->index, owner);
654 if (*portsc & PORTSC_POWNER) {
655 USBPort *companion = s->companion_ports[port->index];
656 companion->ops->detach(companion);
657 companion->dev = NULL;
659 * EHCI spec 4.2.2: "When a disconnect occurs... On the event,
660 * the port ownership is returned immediately to the EHCI controller."
662 *portsc &= ~PORTSC_POWNER;
666 ehci_queues_rip_device(s, port->dev, 0);
667 ehci_queues_rip_device(s, port->dev, 1);
669 *portsc &= ~(PORTSC_CONNECT|PORTSC_PED);
670 *portsc |= PORTSC_CSC;
672 ehci_raise_irq(s, USBSTS_PCD);
676 static void ehci_child_detach(USBPort *port, USBDevice *child)
678 EHCIState *s = port->opaque;
679 uint32_t portsc = s->portsc[port->index];
681 if (portsc & PORTSC_POWNER) {
682 USBPort *companion = s->companion_ports[port->index];
683 companion->ops->child_detach(companion, child);
687 ehci_queues_rip_device(s, child, 0);
688 ehci_queues_rip_device(s, child, 1);
691 static void ehci_wakeup(USBPort *port)
693 EHCIState *s = port->opaque;
694 uint32_t portsc = s->portsc[port->index];
696 if (portsc & PORTSC_POWNER) {
697 USBPort *companion = s->companion_ports[port->index];
698 if (companion->ops->wakeup) {
699 companion->ops->wakeup(companion);
704 qemu_bh_schedule(s->async_bh);
707 static int ehci_register_companion(USBBus *bus, USBPort *ports[],
708 uint32_t portcount, uint32_t firstport)
710 EHCIState *s = container_of(bus, EHCIState, bus);
713 if (firstport + portcount > NB_PORTS) {
714 qerror_report(QERR_INVALID_PARAMETER_VALUE, "firstport",
715 "firstport on masterbus");
716 error_printf_unless_qmp(
717 "firstport value of %u makes companion take ports %u - %u, which "
718 "is outside of the valid range of 0 - %u\n", firstport, firstport,
719 firstport + portcount - 1, NB_PORTS - 1);
723 for (i = 0; i < portcount; i++) {
724 if (s->companion_ports[firstport + i]) {
725 qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
727 error_printf_unless_qmp(
728 "port %u on masterbus %s already has a companion assigned\n",
729 firstport + i, bus->qbus.name);
734 for (i = 0; i < portcount; i++) {
735 s->companion_ports[firstport + i] = ports[i];
736 s->ports[firstport + i].speedmask |=
737 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL;
738 /* Ensure devs attached before the initial reset go to the companion */
739 s->portsc[firstport + i] = PORTSC_POWNER;
742 s->companion_count++;
743 s->caps[0x05] = (s->companion_count << 4) | portcount;
748 static void ehci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep)
750 EHCIState *s = container_of(bus, EHCIState, bus);
751 uint32_t portsc = s->portsc[ep->dev->port->index];
753 if (portsc & PORTSC_POWNER) {
757 s->periodic_sched_active = PERIODIC_ACTIVE;
758 qemu_bh_schedule(s->async_bh);
761 static USBDevice *ehci_find_device(EHCIState *ehci, uint8_t addr)
767 for (i = 0; i < NB_PORTS; i++) {
768 port = &ehci->ports[i];
769 if (!(ehci->portsc[i] & PORTSC_PED)) {
770 DPRINTF("Port %d not enabled\n", i);
773 dev = usb_find_device(port, addr);
781 /* 4.1 host controller initialization */
782 static void ehci_reset(void *opaque)
784 EHCIState *s = opaque;
786 USBDevice *devs[NB_PORTS];
788 trace_usb_ehci_reset();
791 * Do the detach before touching portsc, so that it correctly gets send to
792 * us or to our companion based on PORTSC_POWNER before the reset.
794 for(i = 0; i < NB_PORTS; i++) {
795 devs[i] = s->ports[i].dev;
796 if (devs[i] && devs[i]->attached) {
797 usb_detach(&s->ports[i]);
801 memset(&s->opreg, 0x00, sizeof(s->opreg));
802 memset(&s->portsc, 0x00, sizeof(s->portsc));
804 s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
805 s->usbsts = USBSTS_HALT;
806 s->usbsts_pending = 0;
807 s->usbsts_frindex = 0;
809 s->astate = EST_INACTIVE;
810 s->pstate = EST_INACTIVE;
812 for(i = 0; i < NB_PORTS; i++) {
813 if (s->companion_ports[i]) {
814 s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
816 s->portsc[i] = PORTSC_PPOWER;
818 if (devs[i] && devs[i]->attached) {
819 usb_attach(&s->ports[i]);
820 usb_device_reset(devs[i]);
823 ehci_queues_rip_all(s, 0);
824 ehci_queues_rip_all(s, 1);
825 qemu_del_timer(s->frame_timer);
826 qemu_bh_cancel(s->async_bh);
829 static uint64_t ehci_caps_read(void *ptr, hwaddr addr,
833 return s->caps[addr];
836 static uint64_t ehci_opreg_read(void *ptr, hwaddr addr,
842 val = s->opreg[addr >> 2];
843 trace_usb_ehci_opreg_read(addr + s->opregbase, addr2str(addr), val);
847 static uint64_t ehci_port_read(void *ptr, hwaddr addr,
853 val = s->portsc[addr >> 2];
854 trace_usb_ehci_portsc_read(addr + PORTSC_BEGIN, addr >> 2, val);
858 static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner)
860 USBDevice *dev = s->ports[port].dev;
861 uint32_t *portsc = &s->portsc[port];
864 if (s->companion_ports[port] == NULL)
867 owner = owner & PORTSC_POWNER;
868 orig = *portsc & PORTSC_POWNER;
870 if (!(owner ^ orig)) {
874 if (dev && dev->attached) {
875 usb_detach(&s->ports[port]);
878 *portsc &= ~PORTSC_POWNER;
881 if (dev && dev->attached) {
882 usb_attach(&s->ports[port]);
886 static void ehci_port_write(void *ptr, hwaddr addr,
887 uint64_t val, unsigned size)
890 int port = addr >> 2;
891 uint32_t *portsc = &s->portsc[port];
892 uint32_t old = *portsc;
893 USBDevice *dev = s->ports[port].dev;
895 trace_usb_ehci_portsc_write(addr + PORTSC_BEGIN, addr >> 2, val);
898 *portsc &= ~(val & PORTSC_RWC_MASK);
899 /* The guest may clear, but not set the PED bit */
900 *portsc &= val | ~PORTSC_PED;
901 /* POWNER is masked out by RO_MASK as it is RO when we've no companion */
902 handle_port_owner_write(s, port, val);
903 /* And finally apply RO_MASK */
904 val &= PORTSC_RO_MASK;
906 if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
907 trace_usb_ehci_port_reset(port, 1);
910 if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
911 trace_usb_ehci_port_reset(port, 0);
912 if (dev && dev->attached) {
913 usb_port_reset(&s->ports[port]);
914 *portsc &= ~PORTSC_CSC;
918 * Table 2.16 Set the enable bit(and enable bit change) to indicate
919 * to SW that this port has a high speed device attached
921 if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
926 *portsc &= ~PORTSC_RO_MASK;
928 trace_usb_ehci_portsc_change(addr + PORTSC_BEGIN, addr >> 2, *portsc, old);
931 static void ehci_opreg_write(void *ptr, hwaddr addr,
932 uint64_t val, unsigned size)
935 uint32_t *mmio = s->opreg + (addr >> 2);
936 uint32_t old = *mmio;
939 trace_usb_ehci_opreg_write(addr + s->opregbase, addr2str(addr), val);
943 if (val & USBCMD_HCRESET) {
949 /* not supporting dynamic frame list size at the moment */
950 if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
951 fprintf(stderr, "attempt to set frame list size -- value %d\n",
952 (int)val & USBCMD_FLS);
956 if (val & USBCMD_IAAD) {
958 * Process IAAD immediately, otherwise the Linux IAAD watchdog may
959 * trigger and re-use a qh without us seeing the unlink.
961 s->async_stepdown = 0;
962 qemu_bh_schedule(s->async_bh);
963 trace_usb_ehci_doorbell_ring();
966 if (((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & val) !=
967 ((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & s->usbcmd)) {
968 if (s->pstate == EST_INACTIVE) {
969 SET_LAST_RUN_CLOCK(s);
971 s->usbcmd = val; /* Set usbcmd for ehci_update_halt() */
973 s->async_stepdown = 0;
974 qemu_bh_schedule(s->async_bh);
979 val &= USBSTS_RO_MASK; // bits 6 through 31 are RO
980 ehci_clear_usbsts(s, val); // bits 0 through 5 are R/WC
987 if (ehci_enabled(s) && (USBSTS_FLR & val)) {
988 qemu_bh_schedule(s->async_bh);
993 val &= 0x00003ff8; /* frindex is 14bits and always a multiple of 8 */
999 for(i = 0; i < NB_PORTS; i++)
1000 handle_port_owner_write(s, i, 0);
1004 case PERIODICLISTBASE:
1005 if (ehci_periodic_enabled(s)) {
1007 "ehci: PERIODIC list base register set while periodic schedule\n"
1008 " is enabled and HC is enabled\n");
1013 if (ehci_async_enabled(s)) {
1015 "ehci: ASYNC list address register set while async schedule\n"
1016 " is enabled and HC is enabled\n");
1022 trace_usb_ehci_opreg_change(addr + s->opregbase, addr2str(addr),
1026 /* Get an array of dwords from main memory */
1027 static inline int get_dwords(EHCIState *ehci, uint32_t addr,
1028 uint32_t *buf, int num)
1033 ehci_raise_irq(ehci, USBSTS_HSE);
1034 ehci->usbcmd &= ~USBCMD_RUNSTOP;
1035 trace_usb_ehci_dma_error();
1039 for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
1040 dma_memory_read(ehci->dma, addr, buf, sizeof(*buf));
1041 *buf = le32_to_cpu(*buf);
1047 /* Put an array of dwords in to main memory */
1048 static inline int put_dwords(EHCIState *ehci, uint32_t addr,
1049 uint32_t *buf, int num)
1054 ehci_raise_irq(ehci, USBSTS_HSE);
1055 ehci->usbcmd &= ~USBCMD_RUNSTOP;
1056 trace_usb_ehci_dma_error();
1060 for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
1061 uint32_t tmp = cpu_to_le32(*buf);
1062 dma_memory_write(ehci->dma, addr, &tmp, sizeof(tmp));
1069 * Write the qh back to guest physical memory. This step isn't
1070 * in the EHCI spec but we need to do it since we don't share
1071 * physical memory with our guest VM.
1073 * The first three dwords are read-only for the EHCI, so skip them
1074 * when writing back the qh.
1076 static void ehci_flush_qh(EHCIQueue *q)
1078 uint32_t *qh = (uint32_t *) &q->qh;
1079 uint32_t dwords = sizeof(EHCIqh) >> 2;
1080 uint32_t addr = NLPTR_GET(q->qhaddr);
1082 put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
1087 static int ehci_qh_do_overlay(EHCIQueue *q)
1089 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1097 assert(p->qtdaddr == q->qtdaddr);
1099 // remember values in fields to preserve in qh after overlay
1101 dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE;
1102 ping = q->qh.token & QTD_TOKEN_PING;
1104 q->qh.current_qtd = p->qtdaddr;
1105 q->qh.next_qtd = p->qtd.next;
1106 q->qh.altnext_qtd = p->qtd.altnext;
1107 q->qh.token = p->qtd.token;
1110 eps = get_field(q->qh.epchar, QH_EPCHAR_EPS);
1111 if (eps == EHCI_QH_EPS_HIGH) {
1112 q->qh.token &= ~QTD_TOKEN_PING;
1113 q->qh.token |= ping;
1116 reload = get_field(q->qh.epchar, QH_EPCHAR_RL);
1117 set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
1119 for (i = 0; i < 5; i++) {
1120 q->qh.bufptr[i] = p->qtd.bufptr[i];
1123 if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
1124 // preserve QH DT bit
1125 q->qh.token &= ~QTD_TOKEN_DTOGGLE;
1126 q->qh.token |= dtoggle;
1129 q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
1130 q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
1137 static int ehci_init_transfer(EHCIPacket *p)
1139 uint32_t cpage, offset, bytes, plen;
1142 cpage = get_field(p->qtd.token, QTD_TOKEN_CPAGE);
1143 bytes = get_field(p->qtd.token, QTD_TOKEN_TBYTES);
1144 offset = p->qtd.bufptr[0] & ~QTD_BUFPTR_MASK;
1145 qemu_sglist_init(&p->sgl, 5, p->queue->ehci->dma);
1149 fprintf(stderr, "cpage out of range (%d)\n", cpage);
1153 page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;
1156 if (plen > 4096 - offset) {
1157 plen = 4096 - offset;
1162 qemu_sglist_add(&p->sgl, page, plen);
1168 static void ehci_finish_transfer(EHCIQueue *q, int len)
1170 uint32_t cpage, offset;
1173 /* update cpage & offset */
1174 cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE);
1175 offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
1178 cpage += offset >> QTD_BUFPTR_SH;
1179 offset &= ~QTD_BUFPTR_MASK;
1181 set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE);
1182 q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
1183 q->qh.bufptr[0] |= offset;
1187 static void ehci_async_complete_packet(USBPort *port, USBPacket *packet)
1190 EHCIState *s = port->opaque;
1191 uint32_t portsc = s->portsc[port->index];
1193 if (portsc & PORTSC_POWNER) {
1194 USBPort *companion = s->companion_ports[port->index];
1195 companion->ops->complete(companion, packet);
1199 p = container_of(packet, EHCIPacket, packet);
1200 assert(p->async == EHCI_ASYNC_INFLIGHT);
1202 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
1203 trace_usb_ehci_packet_action(p->queue, p, "remove");
1204 ehci_free_packet(p);
1208 trace_usb_ehci_packet_action(p->queue, p, "wakeup");
1209 p->async = EHCI_ASYNC_FINISHED;
1211 if (!p->queue->async) {
1212 s->periodic_sched_active = PERIODIC_ACTIVE;
1214 qemu_bh_schedule(s->async_bh);
1217 static void ehci_execute_complete(EHCIQueue *q)
1219 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1223 assert(p->qtdaddr == q->qtdaddr);
1224 assert(p->async == EHCI_ASYNC_INITIALIZED ||
1225 p->async == EHCI_ASYNC_FINISHED);
1227 DPRINTF("execute_complete: qhaddr 0x%x, next 0x%x, qtdaddr 0x%x, "
1228 "status %d, actual_length %d\n",
1229 q->qhaddr, q->qh.next, q->qtdaddr,
1230 p->packet.status, p->packet.actual_length);
1232 switch (p->packet.status) {
1233 case USB_RET_SUCCESS:
1235 case USB_RET_IOERROR:
1237 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
1238 set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
1239 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1242 q->qh.token |= QTD_TOKEN_HALT;
1243 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1246 set_field(&q->qh.altnext_qtd, 0, QH_ALTNEXT_NAKCNT);
1247 return; /* We're not done yet with this transaction */
1248 case USB_RET_BABBLE:
1249 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE);
1250 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1253 /* should not be triggerable */
1254 fprintf(stderr, "USB invalid response %d\n", p->packet.status);
1259 /* TODO check 4.12 for splits */
1260 tbytes = get_field(q->qh.token, QTD_TOKEN_TBYTES);
1261 if (tbytes && p->pid == USB_TOKEN_IN) {
1262 tbytes -= p->packet.actual_length;
1264 /* 4.15.1.2 must raise int on a short input packet */
1265 ehci_raise_irq(q->ehci, USBSTS_INT);
1270 DPRINTF("updating tbytes to %d\n", tbytes);
1271 set_field(&q->qh.token, tbytes, QTD_TOKEN_TBYTES);
1273 ehci_finish_transfer(q, p->packet.actual_length);
1274 usb_packet_unmap(&p->packet, &p->sgl);
1275 qemu_sglist_destroy(&p->sgl);
1276 p->async = EHCI_ASYNC_NONE;
1278 q->qh.token ^= QTD_TOKEN_DTOGGLE;
1279 q->qh.token &= ~QTD_TOKEN_ACTIVE;
1281 if (q->qh.token & QTD_TOKEN_IOC) {
1282 ehci_raise_irq(q->ehci, USBSTS_INT);
1284 q->ehci->int_req_by_async = true;
1289 /* 4.10.3 returns "again" */
1290 static int ehci_execute(EHCIPacket *p, const char *action)
1296 assert(p->async == EHCI_ASYNC_NONE ||
1297 p->async == EHCI_ASYNC_INITIALIZED);
1299 if (!(p->qtd.token & QTD_TOKEN_ACTIVE)) {
1300 fprintf(stderr, "Attempting to execute inactive qtd\n");
1304 if (get_field(p->qtd.token, QTD_TOKEN_TBYTES) > BUFF_SIZE) {
1305 ehci_trace_guest_bug(p->queue->ehci,
1306 "guest requested more bytes than allowed");
1310 p->pid = (p->qtd.token & QTD_TOKEN_PID_MASK) >> QTD_TOKEN_PID_SH;
1313 p->pid = USB_TOKEN_OUT;
1316 p->pid = USB_TOKEN_IN;
1319 p->pid = USB_TOKEN_SETUP;
1322 fprintf(stderr, "bad token\n");
1326 endp = get_field(p->queue->qh.epchar, QH_EPCHAR_EP);
1327 ep = usb_ep_get(p->queue->dev, p->pid, endp);
1329 if (p->async == EHCI_ASYNC_NONE) {
1330 if (ehci_init_transfer(p) != 0) {
1334 spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
1335 usb_packet_setup(&p->packet, p->pid, ep, p->qtdaddr, spd,
1336 (p->qtd.token & QTD_TOKEN_IOC) != 0);
1337 usb_packet_map(&p->packet, &p->sgl);
1338 p->async = EHCI_ASYNC_INITIALIZED;
1341 trace_usb_ehci_packet_action(p->queue, p, action);
1342 usb_handle_packet(p->queue->dev, &p->packet);
1343 DPRINTF("submit: qh 0x%x next 0x%x qtd 0x%x pid 0x%x len %zd endp 0x%x "
1344 "status %d actual_length %d\n", p->queue->qhaddr, p->qtd.next,
1345 p->qtdaddr, p->pid, p->packet.iov.size, endp, p->packet.status,
1346 p->packet.actual_length);
1348 if (p->packet.actual_length > BUFF_SIZE) {
1349 fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
1359 static int ehci_process_itd(EHCIState *ehci,
1365 uint32_t i, len, pid, dir, devaddr, endp;
1366 uint32_t pg, off, ptr1, ptr2, max, mult;
1368 ehci->periodic_sched_active = PERIODIC_ACTIVE;
1370 dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
1371 devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
1372 endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
1373 max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
1374 mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
1376 for(i = 0; i < 8; i++) {
1377 if (itd->transact[i] & ITD_XACT_ACTIVE) {
1378 pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
1379 off = itd->transact[i] & ITD_XACT_OFFSET_MASK;
1380 ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK);
1381 ptr2 = (itd->bufptr[pg+1] & ITD_BUFPTR_MASK);
1382 len = get_field(itd->transact[i], ITD_XACT_LENGTH);
1384 if (len > max * mult) {
1388 if (len > BUFF_SIZE) {
1392 qemu_sglist_init(&ehci->isgl, 2, ehci->dma);
1393 if (off + len > 4096) {
1394 /* transfer crosses page border */
1395 uint32_t len2 = off + len - 4096;
1396 uint32_t len1 = len - len2;
1397 qemu_sglist_add(&ehci->isgl, ptr1 + off, len1);
1398 qemu_sglist_add(&ehci->isgl, ptr2, len2);
1400 qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
1403 pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
1405 dev = ehci_find_device(ehci, devaddr);
1406 ep = usb_ep_get(dev, pid, endp);
1407 if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
1408 usb_packet_setup(&ehci->ipacket, pid, ep, addr, false,
1409 (itd->transact[i] & ITD_XACT_IOC) != 0);
1410 usb_packet_map(&ehci->ipacket, &ehci->isgl);
1411 usb_handle_packet(dev, &ehci->ipacket);
1412 usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
1414 DPRINTF("ISOCH: attempt to addess non-iso endpoint\n");
1415 ehci->ipacket.status = USB_RET_NAK;
1416 ehci->ipacket.actual_length = 0;
1418 qemu_sglist_destroy(&ehci->isgl);
1420 switch (ehci->ipacket.status) {
1421 case USB_RET_SUCCESS:
1424 fprintf(stderr, "Unexpected iso usb result: %d\n",
1425 ehci->ipacket.status);
1427 case USB_RET_IOERROR:
1429 /* 3.3.2: XACTERR is only allowed on IN transactions */
1431 itd->transact[i] |= ITD_XACT_XACTERR;
1432 ehci_raise_irq(ehci, USBSTS_ERRINT);
1435 case USB_RET_BABBLE:
1436 itd->transact[i] |= ITD_XACT_BABBLE;
1437 ehci_raise_irq(ehci, USBSTS_ERRINT);
1440 /* no data for us, so do a zero-length transfer */
1441 ehci->ipacket.actual_length = 0;
1445 set_field(&itd->transact[i], len - ehci->ipacket.actual_length,
1446 ITD_XACT_LENGTH); /* OUT */
1448 set_field(&itd->transact[i], ehci->ipacket.actual_length,
1449 ITD_XACT_LENGTH); /* IN */
1451 if (itd->transact[i] & ITD_XACT_IOC) {
1452 ehci_raise_irq(ehci, USBSTS_INT);
1454 itd->transact[i] &= ~ITD_XACT_ACTIVE;
1461 /* This state is the entry point for asynchronous schedule
1462 * processing. Entry here consitutes a EHCI start event state (4.8.5)
1464 static int ehci_state_waitlisthead(EHCIState *ehci, int async)
1469 uint32_t entry = ehci->asynclistaddr;
1471 /* set reclamation flag at start event (4.8.6) */
1473 ehci_set_usbsts(ehci, USBSTS_REC);
1476 ehci_queues_rip_unused(ehci, async);
1478 /* Find the head of the list (4.9.1.1) */
1479 for(i = 0; i < MAX_QH; i++) {
1480 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &qh,
1481 sizeof(EHCIqh) >> 2) < 0) {
1484 ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
1486 if (qh.epchar & QH_EPCHAR_H) {
1488 entry |= (NLPTR_TYPE_QH << 1);
1491 ehci_set_fetch_addr(ehci, async, entry);
1492 ehci_set_state(ehci, async, EST_FETCHENTRY);
1498 if (entry == ehci->asynclistaddr) {
1503 /* no head found for list. */
1505 ehci_set_state(ehci, async, EST_ACTIVE);
1512 /* This state is the entry point for periodic schedule processing as
1513 * well as being a continuation state for async processing.
1515 static int ehci_state_fetchentry(EHCIState *ehci, int async)
1518 uint32_t entry = ehci_get_fetch_addr(ehci, async);
1520 if (NLPTR_TBIT(entry)) {
1521 ehci_set_state(ehci, async, EST_ACTIVE);
1525 /* section 4.8, only QH in async schedule */
1526 if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
1527 fprintf(stderr, "non queue head request in async schedule\n");
1531 switch (NLPTR_TYPE_GET(entry)) {
1533 ehci_set_state(ehci, async, EST_FETCHQH);
1537 case NLPTR_TYPE_ITD:
1538 ehci_set_state(ehci, async, EST_FETCHITD);
1542 case NLPTR_TYPE_STITD:
1543 ehci_set_state(ehci, async, EST_FETCHSITD);
1548 /* TODO: handle FSTN type */
1549 fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
1550 "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
1558 static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)
1561 uint32_t entry, devaddr, endp;
1565 entry = ehci_get_fetch_addr(ehci, async);
1566 q = ehci_find_queue_by_qh(ehci, entry, async);
1568 q = ehci_alloc_queue(ehci, entry, async);
1570 p = QTAILQ_FIRST(&q->packets);
1574 /* we are going in circles -- stop processing */
1575 ehci_set_state(ehci, async, EST_ACTIVE);
1580 if (get_dwords(ehci, NLPTR_GET(q->qhaddr),
1581 (uint32_t *) &qh, sizeof(EHCIqh) >> 2) < 0) {
1585 ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &qh);
1588 * The overlay area of the qh should never be changed by the guest,
1589 * except when idle, in which case the reset is a nop.
1591 devaddr = get_field(qh.epchar, QH_EPCHAR_DEVADDR);
1592 endp = get_field(qh.epchar, QH_EPCHAR_EP);
1593 if ((devaddr != get_field(q->qh.epchar, QH_EPCHAR_DEVADDR)) ||
1594 (endp != get_field(q->qh.epchar, QH_EPCHAR_EP)) ||
1595 (qh.current_qtd != q->qh.current_qtd) ||
1596 (q->async && qh.next_qtd != q->qh.next_qtd) ||
1597 (memcmp(&qh.altnext_qtd, &q->qh.altnext_qtd,
1598 7 * sizeof(uint32_t)) != 0) ||
1599 (q->dev != NULL && q->dev->addr != devaddr)) {
1600 if (ehci_reset_queue(q) > 0) {
1601 ehci_trace_guest_bug(ehci, "guest updated active QH");
1607 q->transact_ctr = get_field(q->qh.epcap, QH_EPCAP_MULT);
1608 if (q->transact_ctr == 0) { /* Guest bug in some versions of windows */
1609 q->transact_ctr = 4;
1612 if (q->dev == NULL) {
1613 q->dev = ehci_find_device(q->ehci, devaddr);
1616 if (p && p->async == EHCI_ASYNC_FINISHED) {
1617 /* I/O finished -- continue processing queue */
1618 trace_usb_ehci_packet_action(p->queue, p, "complete");
1619 ehci_set_state(ehci, async, EST_EXECUTING);
1623 if (async && (q->qh.epchar & QH_EPCHAR_H)) {
1625 /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
1626 if (ehci->usbsts & USBSTS_REC) {
1627 ehci_clear_usbsts(ehci, USBSTS_REC);
1629 DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
1630 " - done processing\n", q->qhaddr);
1631 ehci_set_state(ehci, async, EST_ACTIVE);
1638 if (q->qhaddr != q->qh.next) {
1639 DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
1641 q->qh.epchar & QH_EPCHAR_H,
1642 q->qh.token & QTD_TOKEN_HALT,
1643 q->qh.token & QTD_TOKEN_ACTIVE,
1648 if (q->qh.token & QTD_TOKEN_HALT) {
1649 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1651 } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&
1652 (NLPTR_TBIT(q->qh.current_qtd) == 0)) {
1653 q->qtdaddr = q->qh.current_qtd;
1654 ehci_set_state(ehci, async, EST_FETCHQTD);
1657 /* EHCI spec version 1.0 Section 4.10.2 */
1658 ehci_set_state(ehci, async, EST_ADVANCEQUEUE);
1665 static int ehci_state_fetchitd(EHCIState *ehci, int async)
1671 entry = ehci_get_fetch_addr(ehci, async);
1673 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1674 sizeof(EHCIitd) >> 2) < 0) {
1677 ehci_trace_itd(ehci, entry, &itd);
1679 if (ehci_process_itd(ehci, &itd, entry) != 0) {
1683 put_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1684 sizeof(EHCIitd) >> 2);
1685 ehci_set_fetch_addr(ehci, async, itd.next);
1686 ehci_set_state(ehci, async, EST_FETCHENTRY);
1691 static int ehci_state_fetchsitd(EHCIState *ehci, int async)
1697 entry = ehci_get_fetch_addr(ehci, async);
1699 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *)&sitd,
1700 sizeof(EHCIsitd) >> 2) < 0) {
1703 ehci_trace_sitd(ehci, entry, &sitd);
1705 if (!(sitd.results & SITD_RESULTS_ACTIVE)) {
1706 /* siTD is not active, nothing to do */;
1708 /* TODO: split transfers are not implemented */
1709 fprintf(stderr, "WARNING: Skipping active siTD\n");
1712 ehci_set_fetch_addr(ehci, async, sitd.next);
1713 ehci_set_state(ehci, async, EST_FETCHENTRY);
1717 /* Section 4.10.2 - paragraph 3 */
1718 static int ehci_state_advqueue(EHCIQueue *q)
1721 /* TO-DO: 4.10.2 - paragraph 2
1722 * if I-bit is set to 1 and QH is not active
1723 * go to horizontal QH
1726 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1732 * want data and alt-next qTD is valid
1734 if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
1735 (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
1736 q->qtdaddr = q->qh.altnext_qtd;
1737 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1742 } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {
1743 q->qtdaddr = q->qh.next_qtd;
1744 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1747 * no valid qTD, try next QH
1750 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1756 /* Section 4.10.2 - paragraph 4 */
1757 static int ehci_state_fetchqtd(EHCIQueue *q)
1763 if (get_dwords(q->ehci, NLPTR_GET(q->qtdaddr), (uint32_t *) &qtd,
1764 sizeof(EHCIqtd) >> 2) < 0) {
1767 ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);
1769 p = QTAILQ_FIRST(&q->packets);
1771 if (p->qtdaddr != q->qtdaddr ||
1772 (q->async && !NLPTR_TBIT(p->qtd.next) &&
1773 (p->qtd.next != qtd.next)) ||
1774 (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd.altnext)) ||
1775 p->qtd.bufptr[0] != qtd.bufptr[0]) {
1776 ehci_cancel_queue(q);
1777 ehci_trace_guest_bug(q->ehci, "guest updated active QH or qTD");
1781 ehci_qh_do_overlay(q);
1785 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1787 /* transfer canceled by guest (clear active) */
1788 ehci_cancel_queue(q);
1791 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1792 } else if (p != NULL) {
1794 case EHCI_ASYNC_NONE:
1795 case EHCI_ASYNC_INITIALIZED:
1796 /* Not yet executed (MULT), or previously nacked (int) packet */
1797 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1799 case EHCI_ASYNC_INFLIGHT:
1800 /* Check if the guest has added new tds to the queue */
1801 again = ehci_fill_queue(QTAILQ_LAST(&q->packets, pkts_head));
1802 /* Unfinished async handled packet, go horizontal */
1803 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1805 case EHCI_ASYNC_FINISHED:
1807 * We get here when advqueue moves to a packet which is already
1808 * finished, which can happen with packets queued up by fill_queue
1810 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1814 p = ehci_alloc_packet(q);
1815 p->qtdaddr = q->qtdaddr;
1817 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1823 static int ehci_state_horizqh(EHCIQueue *q)
1827 if (ehci_get_fetch_addr(q->ehci, q->async) != q->qh.next) {
1828 ehci_set_fetch_addr(q->ehci, q->async, q->qh.next);
1829 ehci_set_state(q->ehci, q->async, EST_FETCHENTRY);
1832 ehci_set_state(q->ehci, q->async, EST_ACTIVE);
1838 /* Returns "again" */
1839 static int ehci_fill_queue(EHCIPacket *p)
1841 USBEndpoint *ep = p->packet.ep;
1842 EHCIQueue *q = p->queue;
1843 EHCIqtd qtd = p->qtd;
1847 if (NLPTR_TBIT(qtd.next) != 0) {
1852 * Detect circular td lists, Windows creates these, counting on the
1853 * active bit going low after execution to make the queue stop.
1855 QTAILQ_FOREACH(p, &q->packets, next) {
1856 if (p->qtdaddr == qtdaddr) {
1860 if (get_dwords(q->ehci, NLPTR_GET(qtdaddr),
1861 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2) < 0) {
1864 ehci_trace_qtd(q, NLPTR_GET(qtdaddr), &qtd);
1865 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1868 p = ehci_alloc_packet(q);
1869 p->qtdaddr = qtdaddr;
1871 if (ehci_execute(p, "queue") == -1) {
1874 assert(p->packet.status == USB_RET_ASYNC);
1875 p->async = EHCI_ASYNC_INFLIGHT;
1878 usb_device_flush_ep_queue(ep->dev, ep);
1882 static int ehci_state_execute(EHCIQueue *q)
1884 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1888 assert(p->qtdaddr == q->qtdaddr);
1890 if (ehci_qh_do_overlay(q) != 0) {
1894 // TODO verify enough time remains in the uframe as in 4.4.1.1
1895 // TODO write back ptr to async list when done or out of time
1897 /* 4.10.3, bottom of page 82, go horizontal on transaction counter == 0 */
1898 if (!q->async && q->transact_ctr == 0) {
1899 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1905 ehci_set_usbsts(q->ehci, USBSTS_REC);
1908 again = ehci_execute(p, "process");
1912 if (p->packet.status == USB_RET_ASYNC) {
1914 trace_usb_ehci_packet_action(p->queue, p, "async");
1915 p->async = EHCI_ASYNC_INFLIGHT;
1916 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1918 again = ehci_fill_queue(p);
1925 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1932 static int ehci_state_executing(EHCIQueue *q)
1934 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1937 assert(p->qtdaddr == q->qtdaddr);
1939 ehci_execute_complete(q);
1942 if (!q->async && q->transact_ctr > 0) {
1947 if (p->packet.status == USB_RET_NAK) {
1948 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1950 ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
1958 static int ehci_state_writeback(EHCIQueue *q)
1960 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1961 uint32_t *qtd, addr;
1964 /* Write back the QTD from the QH area */
1966 assert(p->qtdaddr == q->qtdaddr);
1968 ehci_trace_qtd(q, NLPTR_GET(p->qtdaddr), (EHCIqtd *) &q->qh.next_qtd);
1969 qtd = (uint32_t *) &q->qh.next_qtd;
1970 addr = NLPTR_GET(p->qtdaddr);
1971 put_dwords(q->ehci, addr + 2 * sizeof(uint32_t), qtd + 2, 2);
1972 ehci_free_packet(p);
1975 * EHCI specs say go horizontal here.
1977 * We can also advance the queue here for performance reasons. We
1978 * need to take care to only take that shortcut in case we've
1979 * processed the qtd just written back without errors, i.e. halt
1982 if (q->qh.token & QTD_TOKEN_HALT) {
1983 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1986 ehci_set_state(q->ehci, q->async, EST_ADVANCEQUEUE);
1993 * This is the state machine that is common to both async and periodic
1996 static void ehci_advance_state(EHCIState *ehci, int async)
1998 EHCIQueue *q = NULL;
2002 switch(ehci_get_state(ehci, async)) {
2003 case EST_WAITLISTHEAD:
2004 again = ehci_state_waitlisthead(ehci, async);
2007 case EST_FETCHENTRY:
2008 again = ehci_state_fetchentry(ehci, async);
2012 q = ehci_state_fetchqh(ehci, async);
2014 assert(q->async == async);
2022 again = ehci_state_fetchitd(ehci, async);
2026 again = ehci_state_fetchsitd(ehci, async);
2029 case EST_ADVANCEQUEUE:
2030 again = ehci_state_advqueue(q);
2034 again = ehci_state_fetchqtd(q);
2037 case EST_HORIZONTALQH:
2038 again = ehci_state_horizqh(q);
2042 again = ehci_state_execute(q);
2044 ehci->async_stepdown = 0;
2051 ehci->async_stepdown = 0;
2053 again = ehci_state_executing(q);
2058 again = ehci_state_writeback(q);
2060 ehci->periodic_sched_active = PERIODIC_ACTIVE;
2065 fprintf(stderr, "Bad state!\n");
2072 fprintf(stderr, "processing error - resetting ehci HC\n");
2080 static void ehci_advance_async_state(EHCIState *ehci)
2082 const int async = 1;
2084 switch(ehci_get_state(ehci, async)) {
2086 if (!ehci_async_enabled(ehci)) {
2089 ehci_set_state(ehci, async, EST_ACTIVE);
2090 // No break, fall through to ACTIVE
2093 if (!ehci_async_enabled(ehci)) {
2094 ehci_queues_rip_all(ehci, async);
2095 ehci_set_state(ehci, async, EST_INACTIVE);
2099 /* make sure guest has acknowledged the doorbell interrupt */
2100 /* TO-DO: is this really needed? */
2101 if (ehci->usbsts & USBSTS_IAA) {
2102 DPRINTF("IAA status bit still set.\n");
2106 /* check that address register has been set */
2107 if (ehci->asynclistaddr == 0) {
2111 ehci_set_state(ehci, async, EST_WAITLISTHEAD);
2112 ehci_advance_state(ehci, async);
2114 /* If the doorbell is set, the guest wants to make a change to the
2115 * schedule. The host controller needs to release cached data.
2118 if (ehci->usbcmd & USBCMD_IAAD) {
2119 /* Remove all unseen qhs from the async qhs queue */
2120 ehci_queues_rip_unseen(ehci, async);
2121 trace_usb_ehci_doorbell_ack();
2122 ehci->usbcmd &= ~USBCMD_IAAD;
2123 ehci_raise_irq(ehci, USBSTS_IAA);
2128 /* this should only be due to a developer mistake */
2129 fprintf(stderr, "ehci: Bad asynchronous state %d. "
2130 "Resetting to active\n", ehci->astate);
2135 static void ehci_advance_periodic_state(EHCIState *ehci)
2139 const int async = 0;
2143 switch(ehci_get_state(ehci, async)) {
2145 if (!(ehci->frindex & 7) && ehci_periodic_enabled(ehci)) {
2146 ehci_set_state(ehci, async, EST_ACTIVE);
2147 // No break, fall through to ACTIVE
2152 if (!(ehci->frindex & 7) && !ehci_periodic_enabled(ehci)) {
2153 ehci_queues_rip_all(ehci, async);
2154 ehci_set_state(ehci, async, EST_INACTIVE);
2158 list = ehci->periodiclistbase & 0xfffff000;
2159 /* check that register has been set */
2163 list |= ((ehci->frindex & 0x1ff8) >> 1);
2165 if (get_dwords(ehci, list, &entry, 1) < 0) {
2169 DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
2170 ehci->frindex / 8, list, entry);
2171 ehci_set_fetch_addr(ehci, async,entry);
2172 ehci_set_state(ehci, async, EST_FETCHENTRY);
2173 ehci_advance_state(ehci, async);
2174 ehci_queues_rip_unused(ehci, async);
2178 /* this should only be due to a developer mistake */
2179 fprintf(stderr, "ehci: Bad periodic state %d. "
2180 "Resetting to active\n", ehci->pstate);
2185 static void ehci_update_frindex(EHCIState *ehci, int frames)
2189 if (!ehci_enabled(ehci)) {
2193 for (i = 0; i < frames; i++) {
2196 if (ehci->frindex == 0x00002000) {
2197 ehci_raise_irq(ehci, USBSTS_FLR);
2200 if (ehci->frindex == 0x00004000) {
2201 ehci_raise_irq(ehci, USBSTS_FLR);
2203 if (ehci->usbsts_frindex >= 0x00004000) {
2204 ehci->usbsts_frindex -= 0x00004000;
2206 ehci->usbsts_frindex = 0;
2212 static void ehci_frame_timer(void *opaque)
2214 EHCIState *ehci = opaque;
2216 int64_t expire_time, t_now;
2217 uint64_t ns_elapsed;
2218 int frames, skipped_frames;
2221 t_now = qemu_get_clock_ns(vm_clock);
2222 ns_elapsed = t_now - ehci->last_run_ns;
2223 frames = ns_elapsed / FRAME_TIMER_NS;
2225 if (ehci_periodic_enabled(ehci) || ehci->pstate != EST_INACTIVE) {
2228 if (frames > ehci->maxframes) {
2229 skipped_frames = frames - ehci->maxframes;
2230 ehci_update_frindex(ehci, skipped_frames);
2231 ehci->last_run_ns += FRAME_TIMER_NS * skipped_frames;
2232 frames -= skipped_frames;
2233 DPRINTF("WARNING - EHCI skipped %d frames\n", skipped_frames);
2236 for (i = 0; i < frames; i++) {
2238 * If we're running behind schedule, we should not catch up
2239 * too fast, as that will make some guests unhappy:
2240 * 1) We must process a minimum of MIN_FR_PER_TICK frames,
2241 * otherwise we will never catch up
2242 * 2) Process frames until the guest has requested an irq (IOC)
2244 if (i >= MIN_FR_PER_TICK) {
2245 ehci_commit_irq(ehci);
2246 if ((ehci->usbsts & USBINTR_MASK) & ehci->usbintr) {
2250 if (ehci->periodic_sched_active) {
2251 ehci->periodic_sched_active--;
2253 ehci_update_frindex(ehci, 1);
2254 ehci_advance_periodic_state(ehci);
2255 ehci->last_run_ns += FRAME_TIMER_NS;
2258 ehci->periodic_sched_active = 0;
2259 ehci_update_frindex(ehci, frames);
2260 ehci->last_run_ns += FRAME_TIMER_NS * frames;
2263 if (ehci->periodic_sched_active) {
2264 ehci->async_stepdown = 0;
2265 } else if (ehci->async_stepdown < ehci->maxframes / 2) {
2266 ehci->async_stepdown++;
2269 /* Async is not inside loop since it executes everything it can once
2272 if (ehci_async_enabled(ehci) || ehci->astate != EST_INACTIVE) {
2274 ehci_advance_async_state(ehci);
2277 ehci_commit_irq(ehci);
2278 if (ehci->usbsts_pending) {
2280 ehci->async_stepdown = 0;
2283 if (ehci_enabled(ehci) && (ehci->usbintr & USBSTS_FLR)) {
2288 /* If we've raised int, we speed up the timer, so that we quickly
2289 * notice any new packets queued up in response */
2290 if (ehci->int_req_by_async && (ehci->usbsts & USBSTS_INT)) {
2291 expire_time = t_now + get_ticks_per_sec() / (FRAME_TIMER_FREQ * 2);
2292 ehci->int_req_by_async = false;
2294 expire_time = t_now + (get_ticks_per_sec()
2295 * (ehci->async_stepdown+1) / FRAME_TIMER_FREQ);
2297 qemu_mod_timer(ehci->frame_timer, expire_time);
2301 static const MemoryRegionOps ehci_mmio_caps_ops = {
2302 .read = ehci_caps_read,
2303 .valid.min_access_size = 1,
2304 .valid.max_access_size = 4,
2305 .impl.min_access_size = 1,
2306 .impl.max_access_size = 1,
2307 .endianness = DEVICE_LITTLE_ENDIAN,
2310 static const MemoryRegionOps ehci_mmio_opreg_ops = {
2311 .read = ehci_opreg_read,
2312 .write = ehci_opreg_write,
2313 .valid.min_access_size = 4,
2314 .valid.max_access_size = 4,
2315 .endianness = DEVICE_LITTLE_ENDIAN,
2318 static const MemoryRegionOps ehci_mmio_port_ops = {
2319 .read = ehci_port_read,
2320 .write = ehci_port_write,
2321 .valid.min_access_size = 4,
2322 .valid.max_access_size = 4,
2323 .endianness = DEVICE_LITTLE_ENDIAN,
2326 static USBPortOps ehci_port_ops = {
2327 .attach = ehci_attach,
2328 .detach = ehci_detach,
2329 .child_detach = ehci_child_detach,
2330 .wakeup = ehci_wakeup,
2331 .complete = ehci_async_complete_packet,
2334 static USBBusOps ehci_bus_ops = {
2335 .register_companion = ehci_register_companion,
2336 .wakeup_endpoint = ehci_wakeup_endpoint,
2339 static int usb_ehci_post_load(void *opaque, int version_id)
2341 EHCIState *s = opaque;
2344 for (i = 0; i < NB_PORTS; i++) {
2345 USBPort *companion = s->companion_ports[i];
2346 if (companion == NULL) {
2349 if (s->portsc[i] & PORTSC_POWNER) {
2350 companion->dev = s->ports[i].dev;
2352 companion->dev = NULL;
2359 static void usb_ehci_vm_state_change(void *opaque, int running, RunState state)
2361 EHCIState *ehci = opaque;
2364 * We don't migrate the EHCIQueue-s, instead we rebuild them for the
2365 * schedule in guest memory. We must do the rebuilt ASAP, so that
2366 * USB-devices which have async handled packages have a packet in the
2367 * ep queue to match the completion with.
2369 if (state == RUN_STATE_RUNNING) {
2370 ehci_advance_async_state(ehci);
2374 * The schedule rebuilt from guest memory could cause the migration dest
2375 * to miss a QH unlink, and fail to cancel packets, since the unlinked QH
2376 * will never have existed on the destination. Therefor we must flush the
2377 * async schedule on savevm to catch any not yet noticed unlinks.
2379 if (state == RUN_STATE_SAVE_VM) {
2380 ehci_advance_async_state(ehci);
2381 ehci_queues_rip_unseen(ehci, 1);
2385 const VMStateDescription vmstate_ehci = {
2386 .name = "ehci-core",
2388 .minimum_version_id = 1,
2389 .post_load = usb_ehci_post_load,
2390 .fields = (VMStateField[]) {
2391 /* mmio registers */
2392 VMSTATE_UINT32(usbcmd, EHCIState),
2393 VMSTATE_UINT32(usbsts, EHCIState),
2394 VMSTATE_UINT32_V(usbsts_pending, EHCIState, 2),
2395 VMSTATE_UINT32_V(usbsts_frindex, EHCIState, 2),
2396 VMSTATE_UINT32(usbintr, EHCIState),
2397 VMSTATE_UINT32(frindex, EHCIState),
2398 VMSTATE_UINT32(ctrldssegment, EHCIState),
2399 VMSTATE_UINT32(periodiclistbase, EHCIState),
2400 VMSTATE_UINT32(asynclistaddr, EHCIState),
2401 VMSTATE_UINT32(configflag, EHCIState),
2402 VMSTATE_UINT32(portsc[0], EHCIState),
2403 VMSTATE_UINT32(portsc[1], EHCIState),
2404 VMSTATE_UINT32(portsc[2], EHCIState),
2405 VMSTATE_UINT32(portsc[3], EHCIState),
2406 VMSTATE_UINT32(portsc[4], EHCIState),
2407 VMSTATE_UINT32(portsc[5], EHCIState),
2409 VMSTATE_TIMER(frame_timer, EHCIState),
2410 VMSTATE_UINT64(last_run_ns, EHCIState),
2411 VMSTATE_UINT32(async_stepdown, EHCIState),
2412 /* schedule state */
2413 VMSTATE_UINT32(astate, EHCIState),
2414 VMSTATE_UINT32(pstate, EHCIState),
2415 VMSTATE_UINT32(a_fetch_addr, EHCIState),
2416 VMSTATE_UINT32(p_fetch_addr, EHCIState),
2417 VMSTATE_END_OF_LIST()
2421 void usb_ehci_initfn(EHCIState *s, DeviceState *dev)
2425 /* 2.2 host controller interface version */
2426 s->caps[0x00] = (uint8_t)(s->opregbase - s->capsbase);
2427 s->caps[0x01] = 0x00;
2428 s->caps[0x02] = 0x00;
2429 s->caps[0x03] = 0x01; /* HC version */
2430 s->caps[0x04] = NB_PORTS; /* Number of downstream ports */
2431 s->caps[0x05] = 0x00; /* No companion ports at present */
2432 s->caps[0x06] = 0x00;
2433 s->caps[0x07] = 0x00;
2434 s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */
2435 s->caps[0x0a] = 0x00;
2436 s->caps[0x0b] = 0x00;
2438 usb_bus_new(&s->bus, &ehci_bus_ops, dev);
2439 for(i = 0; i < NB_PORTS; i++) {
2440 usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
2441 USB_SPEED_MASK_HIGH);
2442 s->ports[i].dev = 0;
2445 s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s);
2446 s->async_bh = qemu_bh_new(ehci_frame_timer, s);
2447 QTAILQ_INIT(&s->aqueues);
2448 QTAILQ_INIT(&s->pqueues);
2449 usb_packet_init(&s->ipacket);
2451 qemu_register_reset(ehci_reset, s);
2452 qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
2454 memory_region_init(&s->mem, "ehci", MMIO_SIZE);
2455 memory_region_init_io(&s->mem_caps, &ehci_mmio_caps_ops, s,
2456 "capabilities", CAPA_SIZE);
2457 memory_region_init_io(&s->mem_opreg, &ehci_mmio_opreg_ops, s,
2458 "operational", PORTSC_BEGIN);
2459 memory_region_init_io(&s->mem_ports, &ehci_mmio_port_ops, s,
2460 "ports", PORTSC_END - PORTSC_BEGIN);
2462 memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);
2463 memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);
2464 memory_region_add_subregion(&s->mem, s->opregbase + PORTSC_BEGIN,
2469 * vim: expandtab ts=4