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 static bool ehci_verify_qh(EHCIQueue *q, EHCIqh *qh)
443 uint32_t devaddr = get_field(qh->epchar, QH_EPCHAR_DEVADDR);
444 uint32_t endp = get_field(qh->epchar, QH_EPCHAR_EP);
445 if ((devaddr != get_field(q->qh.epchar, QH_EPCHAR_DEVADDR)) ||
446 (endp != get_field(q->qh.epchar, QH_EPCHAR_EP)) ||
447 (qh->current_qtd != q->qh.current_qtd) ||
448 (q->async && qh->next_qtd != q->qh.next_qtd) ||
449 (memcmp(&qh->altnext_qtd, &q->qh.altnext_qtd,
450 7 * sizeof(uint32_t)) != 0) ||
451 (q->dev != NULL && q->dev->addr != devaddr)) {
458 static bool ehci_verify_qtd(EHCIPacket *p, EHCIqtd *qtd)
460 if (p->qtdaddr != p->queue->qtdaddr ||
461 (p->queue->async && !NLPTR_TBIT(p->qtd.next) &&
462 (p->qtd.next != qtd->next)) ||
463 (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd->altnext)) ||
464 p->qtd.token != qtd->token ||
465 p->qtd.bufptr[0] != qtd->bufptr[0]) {
472 /* Finish executing and writeback a packet outside of the regular
473 fetchqh -> fetchqtd -> execute -> writeback cycle */
474 static void ehci_writeback_async_complete_packet(EHCIPacket *p)
476 EHCIQueue *q = p->queue;
479 state = ehci_get_state(q->ehci, q->async);
480 ehci_state_executing(q);
481 ehci_state_writeback(q); /* Frees the packet! */
482 if (!(q->qh.token & QTD_TOKEN_HALT)) {
483 ehci_state_advqueue(q);
485 ehci_set_state(q->ehci, q->async, state);
488 /* packet management */
490 static EHCIPacket *ehci_alloc_packet(EHCIQueue *q)
494 p = g_new0(EHCIPacket, 1);
496 usb_packet_init(&p->packet);
497 QTAILQ_INSERT_TAIL(&q->packets, p, next);
498 trace_usb_ehci_packet_action(p->queue, p, "alloc");
502 static void ehci_free_packet(EHCIPacket *p)
504 if (p->async == EHCI_ASYNC_FINISHED) {
505 ehci_writeback_async_complete_packet(p);
508 trace_usb_ehci_packet_action(p->queue, p, "free");
509 if (p->async == EHCI_ASYNC_INITIALIZED) {
510 usb_packet_unmap(&p->packet, &p->sgl);
511 qemu_sglist_destroy(&p->sgl);
513 if (p->async == EHCI_ASYNC_INFLIGHT) {
514 usb_cancel_packet(&p->packet);
515 usb_packet_unmap(&p->packet, &p->sgl);
516 qemu_sglist_destroy(&p->sgl);
518 QTAILQ_REMOVE(&p->queue->packets, p, next);
519 usb_packet_cleanup(&p->packet);
523 /* queue management */
525 static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, uint32_t addr, int async)
527 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
530 q = g_malloc0(sizeof(*q));
534 QTAILQ_INIT(&q->packets);
535 QTAILQ_INSERT_HEAD(head, q, next);
536 trace_usb_ehci_queue_action(q, "alloc");
540 static int ehci_cancel_queue(EHCIQueue *q)
545 p = QTAILQ_FIRST(&q->packets);
550 trace_usb_ehci_queue_action(q, "cancel");
554 } while ((p = QTAILQ_FIRST(&q->packets)) != NULL);
558 static int ehci_reset_queue(EHCIQueue *q)
562 trace_usb_ehci_queue_action(q, "reset");
563 packets = ehci_cancel_queue(q);
569 static void ehci_free_queue(EHCIQueue *q, const char *warn)
571 EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
574 trace_usb_ehci_queue_action(q, "free");
575 cancelled = ehci_cancel_queue(q);
576 if (warn && cancelled > 0) {
577 ehci_trace_guest_bug(q->ehci, warn);
579 QTAILQ_REMOVE(head, q, next);
583 static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
586 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
589 QTAILQ_FOREACH(q, head, next) {
590 if (addr == q->qhaddr) {
597 static void ehci_queues_rip_unused(EHCIState *ehci, int async)
599 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
600 const char *warn = async ? "guest unlinked busy QH" : NULL;
601 uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
604 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
607 q->ts = ehci->last_run_ns;
610 if (ehci->last_run_ns < q->ts + maxage) {
613 ehci_free_queue(q, warn);
617 static void ehci_queues_rip_unseen(EHCIState *ehci, int async)
619 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
622 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
624 ehci_free_queue(q, NULL);
629 static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
631 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
634 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
638 ehci_free_queue(q, NULL);
642 static void ehci_queues_rip_all(EHCIState *ehci, int async)
644 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
645 const char *warn = async ? "guest stopped busy async schedule" : NULL;
648 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
649 ehci_free_queue(q, warn);
653 /* Attach or detach a device on root hub */
655 static void ehci_attach(USBPort *port)
657 EHCIState *s = port->opaque;
658 uint32_t *portsc = &s->portsc[port->index];
659 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
661 trace_usb_ehci_port_attach(port->index, owner, port->dev->product_desc);
663 if (*portsc & PORTSC_POWNER) {
664 USBPort *companion = s->companion_ports[port->index];
665 companion->dev = port->dev;
666 companion->ops->attach(companion);
670 *portsc |= PORTSC_CONNECT;
671 *portsc |= PORTSC_CSC;
673 ehci_raise_irq(s, USBSTS_PCD);
677 static void ehci_detach(USBPort *port)
679 EHCIState *s = port->opaque;
680 uint32_t *portsc = &s->portsc[port->index];
681 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
683 trace_usb_ehci_port_detach(port->index, owner);
685 if (*portsc & PORTSC_POWNER) {
686 USBPort *companion = s->companion_ports[port->index];
687 companion->ops->detach(companion);
688 companion->dev = NULL;
690 * EHCI spec 4.2.2: "When a disconnect occurs... On the event,
691 * the port ownership is returned immediately to the EHCI controller."
693 *portsc &= ~PORTSC_POWNER;
697 ehci_queues_rip_device(s, port->dev, 0);
698 ehci_queues_rip_device(s, port->dev, 1);
700 *portsc &= ~(PORTSC_CONNECT|PORTSC_PED);
701 *portsc |= PORTSC_CSC;
703 ehci_raise_irq(s, USBSTS_PCD);
707 static void ehci_child_detach(USBPort *port, USBDevice *child)
709 EHCIState *s = port->opaque;
710 uint32_t portsc = s->portsc[port->index];
712 if (portsc & PORTSC_POWNER) {
713 USBPort *companion = s->companion_ports[port->index];
714 companion->ops->child_detach(companion, child);
718 ehci_queues_rip_device(s, child, 0);
719 ehci_queues_rip_device(s, child, 1);
722 static void ehci_wakeup(USBPort *port)
724 EHCIState *s = port->opaque;
725 uint32_t portsc = s->portsc[port->index];
727 if (portsc & PORTSC_POWNER) {
728 USBPort *companion = s->companion_ports[port->index];
729 if (companion->ops->wakeup) {
730 companion->ops->wakeup(companion);
735 qemu_bh_schedule(s->async_bh);
738 static int ehci_register_companion(USBBus *bus, USBPort *ports[],
739 uint32_t portcount, uint32_t firstport)
741 EHCIState *s = container_of(bus, EHCIState, bus);
744 if (firstport + portcount > NB_PORTS) {
745 qerror_report(QERR_INVALID_PARAMETER_VALUE, "firstport",
746 "firstport on masterbus");
747 error_printf_unless_qmp(
748 "firstport value of %u makes companion take ports %u - %u, which "
749 "is outside of the valid range of 0 - %u\n", firstport, firstport,
750 firstport + portcount - 1, NB_PORTS - 1);
754 for (i = 0; i < portcount; i++) {
755 if (s->companion_ports[firstport + i]) {
756 qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
758 error_printf_unless_qmp(
759 "port %u on masterbus %s already has a companion assigned\n",
760 firstport + i, bus->qbus.name);
765 for (i = 0; i < portcount; i++) {
766 s->companion_ports[firstport + i] = ports[i];
767 s->ports[firstport + i].speedmask |=
768 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL;
769 /* Ensure devs attached before the initial reset go to the companion */
770 s->portsc[firstport + i] = PORTSC_POWNER;
773 s->companion_count++;
774 s->caps[0x05] = (s->companion_count << 4) | portcount;
779 static void ehci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep)
781 EHCIState *s = container_of(bus, EHCIState, bus);
782 uint32_t portsc = s->portsc[ep->dev->port->index];
784 if (portsc & PORTSC_POWNER) {
788 s->periodic_sched_active = PERIODIC_ACTIVE;
789 qemu_bh_schedule(s->async_bh);
792 static USBDevice *ehci_find_device(EHCIState *ehci, uint8_t addr)
798 for (i = 0; i < NB_PORTS; i++) {
799 port = &ehci->ports[i];
800 if (!(ehci->portsc[i] & PORTSC_PED)) {
801 DPRINTF("Port %d not enabled\n", i);
804 dev = usb_find_device(port, addr);
812 /* 4.1 host controller initialization */
813 static void ehci_reset(void *opaque)
815 EHCIState *s = opaque;
817 USBDevice *devs[NB_PORTS];
819 trace_usb_ehci_reset();
822 * Do the detach before touching portsc, so that it correctly gets send to
823 * us or to our companion based on PORTSC_POWNER before the reset.
825 for(i = 0; i < NB_PORTS; i++) {
826 devs[i] = s->ports[i].dev;
827 if (devs[i] && devs[i]->attached) {
828 usb_detach(&s->ports[i]);
832 memset(&s->opreg, 0x00, sizeof(s->opreg));
833 memset(&s->portsc, 0x00, sizeof(s->portsc));
835 s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
836 s->usbsts = USBSTS_HALT;
837 s->usbsts_pending = 0;
838 s->usbsts_frindex = 0;
840 s->astate = EST_INACTIVE;
841 s->pstate = EST_INACTIVE;
843 for(i = 0; i < NB_PORTS; i++) {
844 if (s->companion_ports[i]) {
845 s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
847 s->portsc[i] = PORTSC_PPOWER;
849 if (devs[i] && devs[i]->attached) {
850 usb_attach(&s->ports[i]);
851 usb_device_reset(devs[i]);
854 ehci_queues_rip_all(s, 0);
855 ehci_queues_rip_all(s, 1);
856 qemu_del_timer(s->frame_timer);
857 qemu_bh_cancel(s->async_bh);
860 static uint64_t ehci_caps_read(void *ptr, hwaddr addr,
864 return s->caps[addr];
867 static uint64_t ehci_opreg_read(void *ptr, hwaddr addr,
873 val = s->opreg[addr >> 2];
874 trace_usb_ehci_opreg_read(addr + s->opregbase, addr2str(addr), val);
878 static uint64_t ehci_port_read(void *ptr, hwaddr addr,
884 val = s->portsc[addr >> 2];
885 trace_usb_ehci_portsc_read(addr + PORTSC_BEGIN, addr >> 2, val);
889 static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner)
891 USBDevice *dev = s->ports[port].dev;
892 uint32_t *portsc = &s->portsc[port];
895 if (s->companion_ports[port] == NULL)
898 owner = owner & PORTSC_POWNER;
899 orig = *portsc & PORTSC_POWNER;
901 if (!(owner ^ orig)) {
905 if (dev && dev->attached) {
906 usb_detach(&s->ports[port]);
909 *portsc &= ~PORTSC_POWNER;
912 if (dev && dev->attached) {
913 usb_attach(&s->ports[port]);
917 static void ehci_port_write(void *ptr, hwaddr addr,
918 uint64_t val, unsigned size)
921 int port = addr >> 2;
922 uint32_t *portsc = &s->portsc[port];
923 uint32_t old = *portsc;
924 USBDevice *dev = s->ports[port].dev;
926 trace_usb_ehci_portsc_write(addr + PORTSC_BEGIN, addr >> 2, val);
929 *portsc &= ~(val & PORTSC_RWC_MASK);
930 /* The guest may clear, but not set the PED bit */
931 *portsc &= val | ~PORTSC_PED;
932 /* POWNER is masked out by RO_MASK as it is RO when we've no companion */
933 handle_port_owner_write(s, port, val);
934 /* And finally apply RO_MASK */
935 val &= PORTSC_RO_MASK;
937 if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
938 trace_usb_ehci_port_reset(port, 1);
941 if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
942 trace_usb_ehci_port_reset(port, 0);
943 if (dev && dev->attached) {
944 usb_port_reset(&s->ports[port]);
945 *portsc &= ~PORTSC_CSC;
949 * Table 2.16 Set the enable bit(and enable bit change) to indicate
950 * to SW that this port has a high speed device attached
952 if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
957 *portsc &= ~PORTSC_RO_MASK;
959 trace_usb_ehci_portsc_change(addr + PORTSC_BEGIN, addr >> 2, *portsc, old);
962 static void ehci_opreg_write(void *ptr, hwaddr addr,
963 uint64_t val, unsigned size)
966 uint32_t *mmio = s->opreg + (addr >> 2);
967 uint32_t old = *mmio;
970 trace_usb_ehci_opreg_write(addr + s->opregbase, addr2str(addr), val);
974 if (val & USBCMD_HCRESET) {
980 /* not supporting dynamic frame list size at the moment */
981 if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
982 fprintf(stderr, "attempt to set frame list size -- value %d\n",
983 (int)val & USBCMD_FLS);
987 if (val & USBCMD_IAAD) {
989 * Process IAAD immediately, otherwise the Linux IAAD watchdog may
990 * trigger and re-use a qh without us seeing the unlink.
992 s->async_stepdown = 0;
993 qemu_bh_schedule(s->async_bh);
994 trace_usb_ehci_doorbell_ring();
997 if (((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & val) !=
998 ((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & s->usbcmd)) {
999 if (s->pstate == EST_INACTIVE) {
1000 SET_LAST_RUN_CLOCK(s);
1002 s->usbcmd = val; /* Set usbcmd for ehci_update_halt() */
1003 ehci_update_halt(s);
1004 s->async_stepdown = 0;
1005 qemu_bh_schedule(s->async_bh);
1010 val &= USBSTS_RO_MASK; // bits 6 through 31 are RO
1011 ehci_clear_usbsts(s, val); // bits 0 through 5 are R/WC
1017 val &= USBINTR_MASK;
1018 if (ehci_enabled(s) && (USBSTS_FLR & val)) {
1019 qemu_bh_schedule(s->async_bh);
1024 val &= 0x00003ff8; /* frindex is 14bits and always a multiple of 8 */
1030 for(i = 0; i < NB_PORTS; i++)
1031 handle_port_owner_write(s, i, 0);
1035 case PERIODICLISTBASE:
1036 if (ehci_periodic_enabled(s)) {
1038 "ehci: PERIODIC list base register set while periodic schedule\n"
1039 " is enabled and HC is enabled\n");
1044 if (ehci_async_enabled(s)) {
1046 "ehci: ASYNC list address register set while async schedule\n"
1047 " is enabled and HC is enabled\n");
1053 trace_usb_ehci_opreg_change(addr + s->opregbase, addr2str(addr),
1057 /* Get an array of dwords from main memory */
1058 static inline int get_dwords(EHCIState *ehci, uint32_t addr,
1059 uint32_t *buf, int num)
1064 ehci_raise_irq(ehci, USBSTS_HSE);
1065 ehci->usbcmd &= ~USBCMD_RUNSTOP;
1066 trace_usb_ehci_dma_error();
1070 for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
1071 dma_memory_read(ehci->dma, addr, buf, sizeof(*buf));
1072 *buf = le32_to_cpu(*buf);
1078 /* Put an array of dwords in to main memory */
1079 static inline int put_dwords(EHCIState *ehci, uint32_t addr,
1080 uint32_t *buf, int num)
1085 ehci_raise_irq(ehci, USBSTS_HSE);
1086 ehci->usbcmd &= ~USBCMD_RUNSTOP;
1087 trace_usb_ehci_dma_error();
1091 for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
1092 uint32_t tmp = cpu_to_le32(*buf);
1093 dma_memory_write(ehci->dma, addr, &tmp, sizeof(tmp));
1100 * Write the qh back to guest physical memory. This step isn't
1101 * in the EHCI spec but we need to do it since we don't share
1102 * physical memory with our guest VM.
1104 * The first three dwords are read-only for the EHCI, so skip them
1105 * when writing back the qh.
1107 static void ehci_flush_qh(EHCIQueue *q)
1109 uint32_t *qh = (uint32_t *) &q->qh;
1110 uint32_t dwords = sizeof(EHCIqh) >> 2;
1111 uint32_t addr = NLPTR_GET(q->qhaddr);
1113 put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
1118 static int ehci_qh_do_overlay(EHCIQueue *q)
1120 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1128 assert(p->qtdaddr == q->qtdaddr);
1130 // remember values in fields to preserve in qh after overlay
1132 dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE;
1133 ping = q->qh.token & QTD_TOKEN_PING;
1135 q->qh.current_qtd = p->qtdaddr;
1136 q->qh.next_qtd = p->qtd.next;
1137 q->qh.altnext_qtd = p->qtd.altnext;
1138 q->qh.token = p->qtd.token;
1141 eps = get_field(q->qh.epchar, QH_EPCHAR_EPS);
1142 if (eps == EHCI_QH_EPS_HIGH) {
1143 q->qh.token &= ~QTD_TOKEN_PING;
1144 q->qh.token |= ping;
1147 reload = get_field(q->qh.epchar, QH_EPCHAR_RL);
1148 set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
1150 for (i = 0; i < 5; i++) {
1151 q->qh.bufptr[i] = p->qtd.bufptr[i];
1154 if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
1155 // preserve QH DT bit
1156 q->qh.token &= ~QTD_TOKEN_DTOGGLE;
1157 q->qh.token |= dtoggle;
1160 q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
1161 q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
1168 static int ehci_init_transfer(EHCIPacket *p)
1170 uint32_t cpage, offset, bytes, plen;
1173 cpage = get_field(p->qtd.token, QTD_TOKEN_CPAGE);
1174 bytes = get_field(p->qtd.token, QTD_TOKEN_TBYTES);
1175 offset = p->qtd.bufptr[0] & ~QTD_BUFPTR_MASK;
1176 qemu_sglist_init(&p->sgl, 5, p->queue->ehci->dma);
1180 fprintf(stderr, "cpage out of range (%d)\n", cpage);
1184 page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;
1187 if (plen > 4096 - offset) {
1188 plen = 4096 - offset;
1193 qemu_sglist_add(&p->sgl, page, plen);
1199 static void ehci_finish_transfer(EHCIQueue *q, int len)
1201 uint32_t cpage, offset;
1204 /* update cpage & offset */
1205 cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE);
1206 offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
1209 cpage += offset >> QTD_BUFPTR_SH;
1210 offset &= ~QTD_BUFPTR_MASK;
1212 set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE);
1213 q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
1214 q->qh.bufptr[0] |= offset;
1218 static void ehci_async_complete_packet(USBPort *port, USBPacket *packet)
1221 EHCIState *s = port->opaque;
1222 uint32_t portsc = s->portsc[port->index];
1224 if (portsc & PORTSC_POWNER) {
1225 USBPort *companion = s->companion_ports[port->index];
1226 companion->ops->complete(companion, packet);
1230 p = container_of(packet, EHCIPacket, packet);
1231 assert(p->async == EHCI_ASYNC_INFLIGHT);
1233 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
1234 trace_usb_ehci_packet_action(p->queue, p, "remove");
1235 ehci_free_packet(p);
1239 trace_usb_ehci_packet_action(p->queue, p, "wakeup");
1240 p->async = EHCI_ASYNC_FINISHED;
1242 if (!p->queue->async) {
1243 s->periodic_sched_active = PERIODIC_ACTIVE;
1245 qemu_bh_schedule(s->async_bh);
1248 static void ehci_execute_complete(EHCIQueue *q)
1250 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1254 assert(p->qtdaddr == q->qtdaddr);
1255 assert(p->async == EHCI_ASYNC_INITIALIZED ||
1256 p->async == EHCI_ASYNC_FINISHED);
1258 DPRINTF("execute_complete: qhaddr 0x%x, next 0x%x, qtdaddr 0x%x, "
1259 "status %d, actual_length %d\n",
1260 q->qhaddr, q->qh.next, q->qtdaddr,
1261 p->packet.status, p->packet.actual_length);
1263 switch (p->packet.status) {
1264 case USB_RET_SUCCESS:
1266 case USB_RET_IOERROR:
1268 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
1269 set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
1270 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1273 q->qh.token |= QTD_TOKEN_HALT;
1274 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1277 set_field(&q->qh.altnext_qtd, 0, QH_ALTNEXT_NAKCNT);
1278 return; /* We're not done yet with this transaction */
1279 case USB_RET_BABBLE:
1280 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE);
1281 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1284 /* should not be triggerable */
1285 fprintf(stderr, "USB invalid response %d\n", p->packet.status);
1290 /* TODO check 4.12 for splits */
1291 tbytes = get_field(q->qh.token, QTD_TOKEN_TBYTES);
1292 if (tbytes && p->pid == USB_TOKEN_IN) {
1293 tbytes -= p->packet.actual_length;
1295 /* 4.15.1.2 must raise int on a short input packet */
1296 ehci_raise_irq(q->ehci, USBSTS_INT);
1301 DPRINTF("updating tbytes to %d\n", tbytes);
1302 set_field(&q->qh.token, tbytes, QTD_TOKEN_TBYTES);
1304 ehci_finish_transfer(q, p->packet.actual_length);
1305 usb_packet_unmap(&p->packet, &p->sgl);
1306 qemu_sglist_destroy(&p->sgl);
1307 p->async = EHCI_ASYNC_NONE;
1309 q->qh.token ^= QTD_TOKEN_DTOGGLE;
1310 q->qh.token &= ~QTD_TOKEN_ACTIVE;
1312 if (q->qh.token & QTD_TOKEN_IOC) {
1313 ehci_raise_irq(q->ehci, USBSTS_INT);
1315 q->ehci->int_req_by_async = true;
1320 /* 4.10.3 returns "again" */
1321 static int ehci_execute(EHCIPacket *p, const char *action)
1327 assert(p->async == EHCI_ASYNC_NONE ||
1328 p->async == EHCI_ASYNC_INITIALIZED);
1330 if (!(p->qtd.token & QTD_TOKEN_ACTIVE)) {
1331 fprintf(stderr, "Attempting to execute inactive qtd\n");
1335 if (get_field(p->qtd.token, QTD_TOKEN_TBYTES) > BUFF_SIZE) {
1336 ehci_trace_guest_bug(p->queue->ehci,
1337 "guest requested more bytes than allowed");
1341 p->pid = (p->qtd.token & QTD_TOKEN_PID_MASK) >> QTD_TOKEN_PID_SH;
1344 p->pid = USB_TOKEN_OUT;
1347 p->pid = USB_TOKEN_IN;
1350 p->pid = USB_TOKEN_SETUP;
1353 fprintf(stderr, "bad token\n");
1357 endp = get_field(p->queue->qh.epchar, QH_EPCHAR_EP);
1358 ep = usb_ep_get(p->queue->dev, p->pid, endp);
1360 if (p->async == EHCI_ASYNC_NONE) {
1361 if (ehci_init_transfer(p) != 0) {
1365 spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
1366 usb_packet_setup(&p->packet, p->pid, ep, p->qtdaddr, spd,
1367 (p->qtd.token & QTD_TOKEN_IOC) != 0);
1368 usb_packet_map(&p->packet, &p->sgl);
1369 p->async = EHCI_ASYNC_INITIALIZED;
1372 trace_usb_ehci_packet_action(p->queue, p, action);
1373 usb_handle_packet(p->queue->dev, &p->packet);
1374 DPRINTF("submit: qh 0x%x next 0x%x qtd 0x%x pid 0x%x len %zd endp 0x%x "
1375 "status %d actual_length %d\n", p->queue->qhaddr, p->qtd.next,
1376 p->qtdaddr, p->pid, p->packet.iov.size, endp, p->packet.status,
1377 p->packet.actual_length);
1379 if (p->packet.actual_length > BUFF_SIZE) {
1380 fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
1390 static int ehci_process_itd(EHCIState *ehci,
1396 uint32_t i, len, pid, dir, devaddr, endp;
1397 uint32_t pg, off, ptr1, ptr2, max, mult;
1399 ehci->periodic_sched_active = PERIODIC_ACTIVE;
1401 dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
1402 devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
1403 endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
1404 max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
1405 mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
1407 for(i = 0; i < 8; i++) {
1408 if (itd->transact[i] & ITD_XACT_ACTIVE) {
1409 pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
1410 off = itd->transact[i] & ITD_XACT_OFFSET_MASK;
1411 ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK);
1412 ptr2 = (itd->bufptr[pg+1] & ITD_BUFPTR_MASK);
1413 len = get_field(itd->transact[i], ITD_XACT_LENGTH);
1415 if (len > max * mult) {
1419 if (len > BUFF_SIZE) {
1423 qemu_sglist_init(&ehci->isgl, 2, ehci->dma);
1424 if (off + len > 4096) {
1425 /* transfer crosses page border */
1426 uint32_t len2 = off + len - 4096;
1427 uint32_t len1 = len - len2;
1428 qemu_sglist_add(&ehci->isgl, ptr1 + off, len1);
1429 qemu_sglist_add(&ehci->isgl, ptr2, len2);
1431 qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
1434 pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
1436 dev = ehci_find_device(ehci, devaddr);
1437 ep = usb_ep_get(dev, pid, endp);
1438 if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
1439 usb_packet_setup(&ehci->ipacket, pid, ep, addr, false,
1440 (itd->transact[i] & ITD_XACT_IOC) != 0);
1441 usb_packet_map(&ehci->ipacket, &ehci->isgl);
1442 usb_handle_packet(dev, &ehci->ipacket);
1443 usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
1445 DPRINTF("ISOCH: attempt to addess non-iso endpoint\n");
1446 ehci->ipacket.status = USB_RET_NAK;
1447 ehci->ipacket.actual_length = 0;
1449 qemu_sglist_destroy(&ehci->isgl);
1451 switch (ehci->ipacket.status) {
1452 case USB_RET_SUCCESS:
1455 fprintf(stderr, "Unexpected iso usb result: %d\n",
1456 ehci->ipacket.status);
1458 case USB_RET_IOERROR:
1460 /* 3.3.2: XACTERR is only allowed on IN transactions */
1462 itd->transact[i] |= ITD_XACT_XACTERR;
1463 ehci_raise_irq(ehci, USBSTS_ERRINT);
1466 case USB_RET_BABBLE:
1467 itd->transact[i] |= ITD_XACT_BABBLE;
1468 ehci_raise_irq(ehci, USBSTS_ERRINT);
1471 /* no data for us, so do a zero-length transfer */
1472 ehci->ipacket.actual_length = 0;
1476 set_field(&itd->transact[i], len - ehci->ipacket.actual_length,
1477 ITD_XACT_LENGTH); /* OUT */
1479 set_field(&itd->transact[i], ehci->ipacket.actual_length,
1480 ITD_XACT_LENGTH); /* IN */
1482 if (itd->transact[i] & ITD_XACT_IOC) {
1483 ehci_raise_irq(ehci, USBSTS_INT);
1485 itd->transact[i] &= ~ITD_XACT_ACTIVE;
1492 /* This state is the entry point for asynchronous schedule
1493 * processing. Entry here consitutes a EHCI start event state (4.8.5)
1495 static int ehci_state_waitlisthead(EHCIState *ehci, int async)
1500 uint32_t entry = ehci->asynclistaddr;
1502 /* set reclamation flag at start event (4.8.6) */
1504 ehci_set_usbsts(ehci, USBSTS_REC);
1507 ehci_queues_rip_unused(ehci, async);
1509 /* Find the head of the list (4.9.1.1) */
1510 for(i = 0; i < MAX_QH; i++) {
1511 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &qh,
1512 sizeof(EHCIqh) >> 2) < 0) {
1515 ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
1517 if (qh.epchar & QH_EPCHAR_H) {
1519 entry |= (NLPTR_TYPE_QH << 1);
1522 ehci_set_fetch_addr(ehci, async, entry);
1523 ehci_set_state(ehci, async, EST_FETCHENTRY);
1529 if (entry == ehci->asynclistaddr) {
1534 /* no head found for list. */
1536 ehci_set_state(ehci, async, EST_ACTIVE);
1543 /* This state is the entry point for periodic schedule processing as
1544 * well as being a continuation state for async processing.
1546 static int ehci_state_fetchentry(EHCIState *ehci, int async)
1549 uint32_t entry = ehci_get_fetch_addr(ehci, async);
1551 if (NLPTR_TBIT(entry)) {
1552 ehci_set_state(ehci, async, EST_ACTIVE);
1556 /* section 4.8, only QH in async schedule */
1557 if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
1558 fprintf(stderr, "non queue head request in async schedule\n");
1562 switch (NLPTR_TYPE_GET(entry)) {
1564 ehci_set_state(ehci, async, EST_FETCHQH);
1568 case NLPTR_TYPE_ITD:
1569 ehci_set_state(ehci, async, EST_FETCHITD);
1573 case NLPTR_TYPE_STITD:
1574 ehci_set_state(ehci, async, EST_FETCHSITD);
1579 /* TODO: handle FSTN type */
1580 fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
1581 "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
1589 static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)
1596 entry = ehci_get_fetch_addr(ehci, async);
1597 q = ehci_find_queue_by_qh(ehci, entry, async);
1599 q = ehci_alloc_queue(ehci, entry, async);
1601 p = QTAILQ_FIRST(&q->packets);
1605 /* we are going in circles -- stop processing */
1606 ehci_set_state(ehci, async, EST_ACTIVE);
1611 if (get_dwords(ehci, NLPTR_GET(q->qhaddr),
1612 (uint32_t *) &qh, sizeof(EHCIqh) >> 2) < 0) {
1616 ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &qh);
1619 * The overlay area of the qh should never be changed by the guest,
1620 * except when idle, in which case the reset is a nop.
1622 if (!ehci_verify_qh(q, &qh)) {
1623 if (ehci_reset_queue(q) > 0) {
1624 ehci_trace_guest_bug(ehci, "guest updated active QH");
1630 q->transact_ctr = get_field(q->qh.epcap, QH_EPCAP_MULT);
1631 if (q->transact_ctr == 0) { /* Guest bug in some versions of windows */
1632 q->transact_ctr = 4;
1635 if (q->dev == NULL) {
1636 q->dev = ehci_find_device(q->ehci,
1637 get_field(q->qh.epchar, QH_EPCHAR_DEVADDR));
1640 if (p && p->async == EHCI_ASYNC_FINISHED) {
1641 /* I/O finished -- continue processing queue */
1642 trace_usb_ehci_packet_action(p->queue, p, "complete");
1643 ehci_set_state(ehci, async, EST_EXECUTING);
1647 if (async && (q->qh.epchar & QH_EPCHAR_H)) {
1649 /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
1650 if (ehci->usbsts & USBSTS_REC) {
1651 ehci_clear_usbsts(ehci, USBSTS_REC);
1653 DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
1654 " - done processing\n", q->qhaddr);
1655 ehci_set_state(ehci, async, EST_ACTIVE);
1662 if (q->qhaddr != q->qh.next) {
1663 DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
1665 q->qh.epchar & QH_EPCHAR_H,
1666 q->qh.token & QTD_TOKEN_HALT,
1667 q->qh.token & QTD_TOKEN_ACTIVE,
1672 if (q->qh.token & QTD_TOKEN_HALT) {
1673 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1675 } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&
1676 (NLPTR_TBIT(q->qh.current_qtd) == 0)) {
1677 q->qtdaddr = q->qh.current_qtd;
1678 ehci_set_state(ehci, async, EST_FETCHQTD);
1681 /* EHCI spec version 1.0 Section 4.10.2 */
1682 ehci_set_state(ehci, async, EST_ADVANCEQUEUE);
1689 static int ehci_state_fetchitd(EHCIState *ehci, int async)
1695 entry = ehci_get_fetch_addr(ehci, async);
1697 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1698 sizeof(EHCIitd) >> 2) < 0) {
1701 ehci_trace_itd(ehci, entry, &itd);
1703 if (ehci_process_itd(ehci, &itd, entry) != 0) {
1707 put_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1708 sizeof(EHCIitd) >> 2);
1709 ehci_set_fetch_addr(ehci, async, itd.next);
1710 ehci_set_state(ehci, async, EST_FETCHENTRY);
1715 static int ehci_state_fetchsitd(EHCIState *ehci, int async)
1721 entry = ehci_get_fetch_addr(ehci, async);
1723 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *)&sitd,
1724 sizeof(EHCIsitd) >> 2) < 0) {
1727 ehci_trace_sitd(ehci, entry, &sitd);
1729 if (!(sitd.results & SITD_RESULTS_ACTIVE)) {
1730 /* siTD is not active, nothing to do */;
1732 /* TODO: split transfers are not implemented */
1733 fprintf(stderr, "WARNING: Skipping active siTD\n");
1736 ehci_set_fetch_addr(ehci, async, sitd.next);
1737 ehci_set_state(ehci, async, EST_FETCHENTRY);
1741 /* Section 4.10.2 - paragraph 3 */
1742 static int ehci_state_advqueue(EHCIQueue *q)
1745 /* TO-DO: 4.10.2 - paragraph 2
1746 * if I-bit is set to 1 and QH is not active
1747 * go to horizontal QH
1750 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1756 * want data and alt-next qTD is valid
1758 if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
1759 (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
1760 q->qtdaddr = q->qh.altnext_qtd;
1761 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1766 } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {
1767 q->qtdaddr = q->qh.next_qtd;
1768 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1771 * no valid qTD, try next QH
1774 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1780 /* Section 4.10.2 - paragraph 4 */
1781 static int ehci_state_fetchqtd(EHCIQueue *q)
1787 if (get_dwords(q->ehci, NLPTR_GET(q->qtdaddr), (uint32_t *) &qtd,
1788 sizeof(EHCIqtd) >> 2) < 0) {
1791 ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);
1793 p = QTAILQ_FIRST(&q->packets);
1795 if (!ehci_verify_qtd(p, &qtd)) {
1796 ehci_cancel_queue(q);
1797 if (qtd.token & QTD_TOKEN_ACTIVE) {
1798 ehci_trace_guest_bug(q->ehci, "guest updated active qTD");
1803 ehci_qh_do_overlay(q);
1807 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1808 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1809 } else if (p != NULL) {
1811 case EHCI_ASYNC_NONE:
1812 case EHCI_ASYNC_INITIALIZED:
1813 /* Not yet executed (MULT), or previously nacked (int) packet */
1814 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1816 case EHCI_ASYNC_INFLIGHT:
1817 /* Check if the guest has added new tds to the queue */
1818 again = ehci_fill_queue(QTAILQ_LAST(&q->packets, pkts_head));
1819 /* Unfinished async handled packet, go horizontal */
1820 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1822 case EHCI_ASYNC_FINISHED:
1824 * We get here when advqueue moves to a packet which is already
1825 * finished, which can happen with packets queued up by fill_queue
1827 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1831 p = ehci_alloc_packet(q);
1832 p->qtdaddr = q->qtdaddr;
1834 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1840 static int ehci_state_horizqh(EHCIQueue *q)
1844 if (ehci_get_fetch_addr(q->ehci, q->async) != q->qh.next) {
1845 ehci_set_fetch_addr(q->ehci, q->async, q->qh.next);
1846 ehci_set_state(q->ehci, q->async, EST_FETCHENTRY);
1849 ehci_set_state(q->ehci, q->async, EST_ACTIVE);
1855 /* Returns "again" */
1856 static int ehci_fill_queue(EHCIPacket *p)
1858 USBEndpoint *ep = p->packet.ep;
1859 EHCIQueue *q = p->queue;
1860 EHCIqtd qtd = p->qtd;
1864 if (NLPTR_TBIT(qtd.next) != 0) {
1869 * Detect circular td lists, Windows creates these, counting on the
1870 * active bit going low after execution to make the queue stop.
1872 QTAILQ_FOREACH(p, &q->packets, next) {
1873 if (p->qtdaddr == qtdaddr) {
1877 if (get_dwords(q->ehci, NLPTR_GET(qtdaddr),
1878 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2) < 0) {
1881 ehci_trace_qtd(q, NLPTR_GET(qtdaddr), &qtd);
1882 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1885 p = ehci_alloc_packet(q);
1886 p->qtdaddr = qtdaddr;
1888 if (ehci_execute(p, "queue") == -1) {
1891 assert(p->packet.status == USB_RET_ASYNC);
1892 p->async = EHCI_ASYNC_INFLIGHT;
1895 usb_device_flush_ep_queue(ep->dev, ep);
1899 static int ehci_state_execute(EHCIQueue *q)
1901 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1905 assert(p->qtdaddr == q->qtdaddr);
1907 if (ehci_qh_do_overlay(q) != 0) {
1911 // TODO verify enough time remains in the uframe as in 4.4.1.1
1912 // TODO write back ptr to async list when done or out of time
1914 /* 4.10.3, bottom of page 82, go horizontal on transaction counter == 0 */
1915 if (!q->async && q->transact_ctr == 0) {
1916 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1922 ehci_set_usbsts(q->ehci, USBSTS_REC);
1925 again = ehci_execute(p, "process");
1929 if (p->packet.status == USB_RET_ASYNC) {
1931 trace_usb_ehci_packet_action(p->queue, p, "async");
1932 p->async = EHCI_ASYNC_INFLIGHT;
1933 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1935 again = ehci_fill_queue(p);
1942 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1949 static int ehci_state_executing(EHCIQueue *q)
1951 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1954 assert(p->qtdaddr == q->qtdaddr);
1956 ehci_execute_complete(q);
1959 if (!q->async && q->transact_ctr > 0) {
1964 if (p->packet.status == USB_RET_NAK) {
1965 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1967 ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
1975 static int ehci_state_writeback(EHCIQueue *q)
1977 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1978 uint32_t *qtd, addr;
1981 /* Write back the QTD from the QH area */
1983 assert(p->qtdaddr == q->qtdaddr);
1985 ehci_trace_qtd(q, NLPTR_GET(p->qtdaddr), (EHCIqtd *) &q->qh.next_qtd);
1986 qtd = (uint32_t *) &q->qh.next_qtd;
1987 addr = NLPTR_GET(p->qtdaddr);
1988 put_dwords(q->ehci, addr + 2 * sizeof(uint32_t), qtd + 2, 2);
1989 ehci_free_packet(p);
1992 * EHCI specs say go horizontal here.
1994 * We can also advance the queue here for performance reasons. We
1995 * need to take care to only take that shortcut in case we've
1996 * processed the qtd just written back without errors, i.e. halt
1999 if (q->qh.token & QTD_TOKEN_HALT) {
2000 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
2003 ehci_set_state(q->ehci, q->async, EST_ADVANCEQUEUE);
2010 * This is the state machine that is common to both async and periodic
2013 static void ehci_advance_state(EHCIState *ehci, int async)
2015 EHCIQueue *q = NULL;
2019 switch(ehci_get_state(ehci, async)) {
2020 case EST_WAITLISTHEAD:
2021 again = ehci_state_waitlisthead(ehci, async);
2024 case EST_FETCHENTRY:
2025 again = ehci_state_fetchentry(ehci, async);
2029 q = ehci_state_fetchqh(ehci, async);
2031 assert(q->async == async);
2039 again = ehci_state_fetchitd(ehci, async);
2043 again = ehci_state_fetchsitd(ehci, async);
2046 case EST_ADVANCEQUEUE:
2047 again = ehci_state_advqueue(q);
2051 again = ehci_state_fetchqtd(q);
2054 case EST_HORIZONTALQH:
2055 again = ehci_state_horizqh(q);
2059 again = ehci_state_execute(q);
2061 ehci->async_stepdown = 0;
2068 ehci->async_stepdown = 0;
2070 again = ehci_state_executing(q);
2075 again = ehci_state_writeback(q);
2077 ehci->periodic_sched_active = PERIODIC_ACTIVE;
2082 fprintf(stderr, "Bad state!\n");
2089 fprintf(stderr, "processing error - resetting ehci HC\n");
2097 static void ehci_advance_async_state(EHCIState *ehci)
2099 const int async = 1;
2101 switch(ehci_get_state(ehci, async)) {
2103 if (!ehci_async_enabled(ehci)) {
2106 ehci_set_state(ehci, async, EST_ACTIVE);
2107 // No break, fall through to ACTIVE
2110 if (!ehci_async_enabled(ehci)) {
2111 ehci_queues_rip_all(ehci, async);
2112 ehci_set_state(ehci, async, EST_INACTIVE);
2116 /* make sure guest has acknowledged the doorbell interrupt */
2117 /* TO-DO: is this really needed? */
2118 if (ehci->usbsts & USBSTS_IAA) {
2119 DPRINTF("IAA status bit still set.\n");
2123 /* check that address register has been set */
2124 if (ehci->asynclistaddr == 0) {
2128 ehci_set_state(ehci, async, EST_WAITLISTHEAD);
2129 ehci_advance_state(ehci, async);
2131 /* If the doorbell is set, the guest wants to make a change to the
2132 * schedule. The host controller needs to release cached data.
2135 if (ehci->usbcmd & USBCMD_IAAD) {
2136 /* Remove all unseen qhs from the async qhs queue */
2137 ehci_queues_rip_unseen(ehci, async);
2138 trace_usb_ehci_doorbell_ack();
2139 ehci->usbcmd &= ~USBCMD_IAAD;
2140 ehci_raise_irq(ehci, USBSTS_IAA);
2145 /* this should only be due to a developer mistake */
2146 fprintf(stderr, "ehci: Bad asynchronous state %d. "
2147 "Resetting to active\n", ehci->astate);
2152 static void ehci_advance_periodic_state(EHCIState *ehci)
2156 const int async = 0;
2160 switch(ehci_get_state(ehci, async)) {
2162 if (!(ehci->frindex & 7) && ehci_periodic_enabled(ehci)) {
2163 ehci_set_state(ehci, async, EST_ACTIVE);
2164 // No break, fall through to ACTIVE
2169 if (!(ehci->frindex & 7) && !ehci_periodic_enabled(ehci)) {
2170 ehci_queues_rip_all(ehci, async);
2171 ehci_set_state(ehci, async, EST_INACTIVE);
2175 list = ehci->periodiclistbase & 0xfffff000;
2176 /* check that register has been set */
2180 list |= ((ehci->frindex & 0x1ff8) >> 1);
2182 if (get_dwords(ehci, list, &entry, 1) < 0) {
2186 DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
2187 ehci->frindex / 8, list, entry);
2188 ehci_set_fetch_addr(ehci, async,entry);
2189 ehci_set_state(ehci, async, EST_FETCHENTRY);
2190 ehci_advance_state(ehci, async);
2191 ehci_queues_rip_unused(ehci, async);
2195 /* this should only be due to a developer mistake */
2196 fprintf(stderr, "ehci: Bad periodic state %d. "
2197 "Resetting to active\n", ehci->pstate);
2202 static void ehci_update_frindex(EHCIState *ehci, int frames)
2206 if (!ehci_enabled(ehci)) {
2210 for (i = 0; i < frames; i++) {
2213 if (ehci->frindex == 0x00002000) {
2214 ehci_raise_irq(ehci, USBSTS_FLR);
2217 if (ehci->frindex == 0x00004000) {
2218 ehci_raise_irq(ehci, USBSTS_FLR);
2220 if (ehci->usbsts_frindex >= 0x00004000) {
2221 ehci->usbsts_frindex -= 0x00004000;
2223 ehci->usbsts_frindex = 0;
2229 static void ehci_frame_timer(void *opaque)
2231 EHCIState *ehci = opaque;
2233 int64_t expire_time, t_now;
2234 uint64_t ns_elapsed;
2235 int frames, skipped_frames;
2238 t_now = qemu_get_clock_ns(vm_clock);
2239 ns_elapsed = t_now - ehci->last_run_ns;
2240 frames = ns_elapsed / FRAME_TIMER_NS;
2242 if (ehci_periodic_enabled(ehci) || ehci->pstate != EST_INACTIVE) {
2245 if (frames > ehci->maxframes) {
2246 skipped_frames = frames - ehci->maxframes;
2247 ehci_update_frindex(ehci, skipped_frames);
2248 ehci->last_run_ns += FRAME_TIMER_NS * skipped_frames;
2249 frames -= skipped_frames;
2250 DPRINTF("WARNING - EHCI skipped %d frames\n", skipped_frames);
2253 for (i = 0; i < frames; i++) {
2255 * If we're running behind schedule, we should not catch up
2256 * too fast, as that will make some guests unhappy:
2257 * 1) We must process a minimum of MIN_FR_PER_TICK frames,
2258 * otherwise we will never catch up
2259 * 2) Process frames until the guest has requested an irq (IOC)
2261 if (i >= MIN_FR_PER_TICK) {
2262 ehci_commit_irq(ehci);
2263 if ((ehci->usbsts & USBINTR_MASK) & ehci->usbintr) {
2267 if (ehci->periodic_sched_active) {
2268 ehci->periodic_sched_active--;
2270 ehci_update_frindex(ehci, 1);
2271 ehci_advance_periodic_state(ehci);
2272 ehci->last_run_ns += FRAME_TIMER_NS;
2275 ehci->periodic_sched_active = 0;
2276 ehci_update_frindex(ehci, frames);
2277 ehci->last_run_ns += FRAME_TIMER_NS * frames;
2280 if (ehci->periodic_sched_active) {
2281 ehci->async_stepdown = 0;
2282 } else if (ehci->async_stepdown < ehci->maxframes / 2) {
2283 ehci->async_stepdown++;
2286 /* Async is not inside loop since it executes everything it can once
2289 if (ehci_async_enabled(ehci) || ehci->astate != EST_INACTIVE) {
2291 ehci_advance_async_state(ehci);
2294 ehci_commit_irq(ehci);
2295 if (ehci->usbsts_pending) {
2297 ehci->async_stepdown = 0;
2300 if (ehci_enabled(ehci) && (ehci->usbintr & USBSTS_FLR)) {
2305 /* If we've raised int, we speed up the timer, so that we quickly
2306 * notice any new packets queued up in response */
2307 if (ehci->int_req_by_async && (ehci->usbsts & USBSTS_INT)) {
2308 expire_time = t_now + get_ticks_per_sec() / (FRAME_TIMER_FREQ * 2);
2309 ehci->int_req_by_async = false;
2311 expire_time = t_now + (get_ticks_per_sec()
2312 * (ehci->async_stepdown+1) / FRAME_TIMER_FREQ);
2314 qemu_mod_timer(ehci->frame_timer, expire_time);
2318 static const MemoryRegionOps ehci_mmio_caps_ops = {
2319 .read = ehci_caps_read,
2320 .valid.min_access_size = 1,
2321 .valid.max_access_size = 4,
2322 .impl.min_access_size = 1,
2323 .impl.max_access_size = 1,
2324 .endianness = DEVICE_LITTLE_ENDIAN,
2327 static const MemoryRegionOps ehci_mmio_opreg_ops = {
2328 .read = ehci_opreg_read,
2329 .write = ehci_opreg_write,
2330 .valid.min_access_size = 4,
2331 .valid.max_access_size = 4,
2332 .endianness = DEVICE_LITTLE_ENDIAN,
2335 static const MemoryRegionOps ehci_mmio_port_ops = {
2336 .read = ehci_port_read,
2337 .write = ehci_port_write,
2338 .valid.min_access_size = 4,
2339 .valid.max_access_size = 4,
2340 .endianness = DEVICE_LITTLE_ENDIAN,
2343 static USBPortOps ehci_port_ops = {
2344 .attach = ehci_attach,
2345 .detach = ehci_detach,
2346 .child_detach = ehci_child_detach,
2347 .wakeup = ehci_wakeup,
2348 .complete = ehci_async_complete_packet,
2351 static USBBusOps ehci_bus_ops = {
2352 .register_companion = ehci_register_companion,
2353 .wakeup_endpoint = ehci_wakeup_endpoint,
2356 static int usb_ehci_post_load(void *opaque, int version_id)
2358 EHCIState *s = opaque;
2361 for (i = 0; i < NB_PORTS; i++) {
2362 USBPort *companion = s->companion_ports[i];
2363 if (companion == NULL) {
2366 if (s->portsc[i] & PORTSC_POWNER) {
2367 companion->dev = s->ports[i].dev;
2369 companion->dev = NULL;
2376 static void usb_ehci_vm_state_change(void *opaque, int running, RunState state)
2378 EHCIState *ehci = opaque;
2381 * We don't migrate the EHCIQueue-s, instead we rebuild them for the
2382 * schedule in guest memory. We must do the rebuilt ASAP, so that
2383 * USB-devices which have async handled packages have a packet in the
2384 * ep queue to match the completion with.
2386 if (state == RUN_STATE_RUNNING) {
2387 ehci_advance_async_state(ehci);
2391 * The schedule rebuilt from guest memory could cause the migration dest
2392 * to miss a QH unlink, and fail to cancel packets, since the unlinked QH
2393 * will never have existed on the destination. Therefor we must flush the
2394 * async schedule on savevm to catch any not yet noticed unlinks.
2396 if (state == RUN_STATE_SAVE_VM) {
2397 ehci_advance_async_state(ehci);
2398 ehci_queues_rip_unseen(ehci, 1);
2402 const VMStateDescription vmstate_ehci = {
2403 .name = "ehci-core",
2405 .minimum_version_id = 1,
2406 .post_load = usb_ehci_post_load,
2407 .fields = (VMStateField[]) {
2408 /* mmio registers */
2409 VMSTATE_UINT32(usbcmd, EHCIState),
2410 VMSTATE_UINT32(usbsts, EHCIState),
2411 VMSTATE_UINT32_V(usbsts_pending, EHCIState, 2),
2412 VMSTATE_UINT32_V(usbsts_frindex, EHCIState, 2),
2413 VMSTATE_UINT32(usbintr, EHCIState),
2414 VMSTATE_UINT32(frindex, EHCIState),
2415 VMSTATE_UINT32(ctrldssegment, EHCIState),
2416 VMSTATE_UINT32(periodiclistbase, EHCIState),
2417 VMSTATE_UINT32(asynclistaddr, EHCIState),
2418 VMSTATE_UINT32(configflag, EHCIState),
2419 VMSTATE_UINT32(portsc[0], EHCIState),
2420 VMSTATE_UINT32(portsc[1], EHCIState),
2421 VMSTATE_UINT32(portsc[2], EHCIState),
2422 VMSTATE_UINT32(portsc[3], EHCIState),
2423 VMSTATE_UINT32(portsc[4], EHCIState),
2424 VMSTATE_UINT32(portsc[5], EHCIState),
2426 VMSTATE_TIMER(frame_timer, EHCIState),
2427 VMSTATE_UINT64(last_run_ns, EHCIState),
2428 VMSTATE_UINT32(async_stepdown, EHCIState),
2429 /* schedule state */
2430 VMSTATE_UINT32(astate, EHCIState),
2431 VMSTATE_UINT32(pstate, EHCIState),
2432 VMSTATE_UINT32(a_fetch_addr, EHCIState),
2433 VMSTATE_UINT32(p_fetch_addr, EHCIState),
2434 VMSTATE_END_OF_LIST()
2438 void usb_ehci_initfn(EHCIState *s, DeviceState *dev)
2442 /* 2.2 host controller interface version */
2443 s->caps[0x00] = (uint8_t)(s->opregbase - s->capsbase);
2444 s->caps[0x01] = 0x00;
2445 s->caps[0x02] = 0x00;
2446 s->caps[0x03] = 0x01; /* HC version */
2447 s->caps[0x04] = NB_PORTS; /* Number of downstream ports */
2448 s->caps[0x05] = 0x00; /* No companion ports at present */
2449 s->caps[0x06] = 0x00;
2450 s->caps[0x07] = 0x00;
2451 s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */
2452 s->caps[0x0a] = 0x00;
2453 s->caps[0x0b] = 0x00;
2455 usb_bus_new(&s->bus, &ehci_bus_ops, dev);
2456 for(i = 0; i < NB_PORTS; i++) {
2457 usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
2458 USB_SPEED_MASK_HIGH);
2459 s->ports[i].dev = 0;
2462 s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s);
2463 s->async_bh = qemu_bh_new(ehci_frame_timer, s);
2464 QTAILQ_INIT(&s->aqueues);
2465 QTAILQ_INIT(&s->pqueues);
2466 usb_packet_init(&s->ipacket);
2468 qemu_register_reset(ehci_reset, s);
2469 qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
2471 memory_region_init(&s->mem, "ehci", MMIO_SIZE);
2472 memory_region_init_io(&s->mem_caps, &ehci_mmio_caps_ops, s,
2473 "capabilities", CAPA_SIZE);
2474 memory_region_init_io(&s->mem_opreg, &ehci_mmio_opreg_ops, s,
2475 "operational", PORTSC_BEGIN);
2476 memory_region_init_io(&s->mem_ports, &ehci_mmio_port_ops, s,
2477 "ports", PORTSC_END - PORTSC_BEGIN);
2479 memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);
2480 memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);
2481 memory_region_add_subregion(&s->mem, s->opregbase + PORTSC_BEGIN,
2486 * vim: expandtab ts=4