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)
112 #define UFRAME_TIMER_NS (FRAME_TIMER_NS / 8)
114 #define NB_MAXINTRATE 8 // Max rate at which controller issues ints
115 #define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction
116 #define MAX_QH 100 // Max allowable queue heads in a chain
117 #define MIN_UFR_PER_TICK 24 /* Min frames to process when catching up */
118 #define PERIODIC_ACTIVE 512 /* Micro-frames */
120 /* Internal periodic / asynchronous schedule state machine states
127 /* The following states are internal to the state machine function
141 /* macros for accessing fields within next link pointer entry */
142 #define NLPTR_GET(x) ((x) & 0xffffffe0)
143 #define NLPTR_TYPE_GET(x) (((x) >> 1) & 3)
144 #define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid
146 /* link pointer types */
147 #define NLPTR_TYPE_ITD 0 // isoc xfer descriptor
148 #define NLPTR_TYPE_QH 1 // queue head
149 #define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor
150 #define NLPTR_TYPE_FSTN 3 // frame span traversal node
152 #define SET_LAST_RUN_CLOCK(s) \
153 (s)->last_run_ns = qemu_get_clock_ns(vm_clock);
155 /* nifty macros from Arnon's EHCI version */
156 #define get_field(data, field) \
157 (((data) & field##_MASK) >> field##_SH)
159 #define set_field(data, newval, field) do { \
160 uint32_t val = *data; \
161 val &= ~ field##_MASK; \
162 val |= ((newval) << field##_SH) & field##_MASK; \
166 static const char *ehci_state_names[] = {
167 [EST_INACTIVE] = "INACTIVE",
168 [EST_ACTIVE] = "ACTIVE",
169 [EST_EXECUTING] = "EXECUTING",
170 [EST_SLEEPING] = "SLEEPING",
171 [EST_WAITLISTHEAD] = "WAITLISTHEAD",
172 [EST_FETCHENTRY] = "FETCH ENTRY",
173 [EST_FETCHQH] = "FETCH QH",
174 [EST_FETCHITD] = "FETCH ITD",
175 [EST_ADVANCEQUEUE] = "ADVANCEQUEUE",
176 [EST_FETCHQTD] = "FETCH QTD",
177 [EST_EXECUTE] = "EXECUTE",
178 [EST_WRITEBACK] = "WRITEBACK",
179 [EST_HORIZONTALQH] = "HORIZONTALQH",
182 static const char *ehci_mmio_names[] = {
185 [USBINTR] = "USBINTR",
186 [FRINDEX] = "FRINDEX",
187 [PERIODICLISTBASE] = "P-LIST BASE",
188 [ASYNCLISTADDR] = "A-LIST ADDR",
189 [CONFIGFLAG] = "CONFIGFLAG",
192 static int ehci_state_executing(EHCIQueue *q);
193 static int ehci_state_writeback(EHCIQueue *q);
194 static int ehci_state_advqueue(EHCIQueue *q);
195 static int ehci_fill_queue(EHCIPacket *p);
196 static void ehci_free_packet(EHCIPacket *p);
198 static const char *nr2str(const char **n, size_t len, uint32_t nr)
200 if (nr < len && n[nr] != NULL) {
207 static const char *state2str(uint32_t state)
209 return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
212 static const char *addr2str(hwaddr addr)
214 return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
217 static void ehci_trace_usbsts(uint32_t mask, int state)
220 if (mask & USBSTS_INT) {
221 trace_usb_ehci_usbsts("INT", state);
223 if (mask & USBSTS_ERRINT) {
224 trace_usb_ehci_usbsts("ERRINT", state);
226 if (mask & USBSTS_PCD) {
227 trace_usb_ehci_usbsts("PCD", state);
229 if (mask & USBSTS_FLR) {
230 trace_usb_ehci_usbsts("FLR", state);
232 if (mask & USBSTS_HSE) {
233 trace_usb_ehci_usbsts("HSE", state);
235 if (mask & USBSTS_IAA) {
236 trace_usb_ehci_usbsts("IAA", state);
240 if (mask & USBSTS_HALT) {
241 trace_usb_ehci_usbsts("HALT", state);
243 if (mask & USBSTS_REC) {
244 trace_usb_ehci_usbsts("REC", state);
246 if (mask & USBSTS_PSS) {
247 trace_usb_ehci_usbsts("PSS", state);
249 if (mask & USBSTS_ASS) {
250 trace_usb_ehci_usbsts("ASS", state);
254 static inline void ehci_set_usbsts(EHCIState *s, int mask)
256 if ((s->usbsts & mask) == mask) {
259 ehci_trace_usbsts(mask, 1);
263 static inline void ehci_clear_usbsts(EHCIState *s, int mask)
265 if ((s->usbsts & mask) == 0) {
268 ehci_trace_usbsts(mask, 0);
272 /* update irq line */
273 static inline void ehci_update_irq(EHCIState *s)
277 if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
281 trace_usb_ehci_irq(level, s->frindex, s->usbsts, s->usbintr);
282 qemu_set_irq(s->irq, level);
285 /* flag interrupt condition */
286 static inline void ehci_raise_irq(EHCIState *s, int intr)
288 if (intr & (USBSTS_PCD | USBSTS_FLR | USBSTS_HSE)) {
292 s->usbsts_pending |= intr;
297 * Commit pending interrupts (added via ehci_raise_irq),
298 * at the rate allowed by "Interrupt Threshold Control".
300 static inline void ehci_commit_irq(EHCIState *s)
304 if (!s->usbsts_pending) {
307 if (s->usbsts_frindex > s->frindex) {
311 itc = (s->usbcmd >> 16) & 0xff;
312 s->usbsts |= s->usbsts_pending;
313 s->usbsts_pending = 0;
314 s->usbsts_frindex = s->frindex + itc;
318 static void ehci_update_halt(EHCIState *s)
320 if (s->usbcmd & USBCMD_RUNSTOP) {
321 ehci_clear_usbsts(s, USBSTS_HALT);
323 if (s->astate == EST_INACTIVE && s->pstate == EST_INACTIVE) {
324 ehci_set_usbsts(s, USBSTS_HALT);
329 static void ehci_set_state(EHCIState *s, int async, int state)
332 trace_usb_ehci_state("async", state2str(state));
334 if (s->astate == EST_INACTIVE) {
335 ehci_clear_usbsts(s, USBSTS_ASS);
338 ehci_set_usbsts(s, USBSTS_ASS);
341 trace_usb_ehci_state("periodic", state2str(state));
343 if (s->pstate == EST_INACTIVE) {
344 ehci_clear_usbsts(s, USBSTS_PSS);
347 ehci_set_usbsts(s, USBSTS_PSS);
352 static int ehci_get_state(EHCIState *s, int async)
354 return async ? s->astate : s->pstate;
357 static void ehci_set_fetch_addr(EHCIState *s, int async, uint32_t addr)
360 s->a_fetch_addr = addr;
362 s->p_fetch_addr = addr;
366 static int ehci_get_fetch_addr(EHCIState *s, int async)
368 return async ? s->a_fetch_addr : s->p_fetch_addr;
371 static void ehci_trace_qh(EHCIQueue *q, hwaddr addr, EHCIqh *qh)
373 /* need three here due to argument count limits */
374 trace_usb_ehci_qh_ptrs(q, addr, qh->next,
375 qh->current_qtd, qh->next_qtd, qh->altnext_qtd);
376 trace_usb_ehci_qh_fields(addr,
377 get_field(qh->epchar, QH_EPCHAR_RL),
378 get_field(qh->epchar, QH_EPCHAR_MPLEN),
379 get_field(qh->epchar, QH_EPCHAR_EPS),
380 get_field(qh->epchar, QH_EPCHAR_EP),
381 get_field(qh->epchar, QH_EPCHAR_DEVADDR));
382 trace_usb_ehci_qh_bits(addr,
383 (bool)(qh->epchar & QH_EPCHAR_C),
384 (bool)(qh->epchar & QH_EPCHAR_H),
385 (bool)(qh->epchar & QH_EPCHAR_DTC),
386 (bool)(qh->epchar & QH_EPCHAR_I));
389 static void ehci_trace_qtd(EHCIQueue *q, hwaddr addr, EHCIqtd *qtd)
391 /* need three here due to argument count limits */
392 trace_usb_ehci_qtd_ptrs(q, addr, qtd->next, qtd->altnext);
393 trace_usb_ehci_qtd_fields(addr,
394 get_field(qtd->token, QTD_TOKEN_TBYTES),
395 get_field(qtd->token, QTD_TOKEN_CPAGE),
396 get_field(qtd->token, QTD_TOKEN_CERR),
397 get_field(qtd->token, QTD_TOKEN_PID));
398 trace_usb_ehci_qtd_bits(addr,
399 (bool)(qtd->token & QTD_TOKEN_IOC),
400 (bool)(qtd->token & QTD_TOKEN_ACTIVE),
401 (bool)(qtd->token & QTD_TOKEN_HALT),
402 (bool)(qtd->token & QTD_TOKEN_BABBLE),
403 (bool)(qtd->token & QTD_TOKEN_XACTERR));
406 static void ehci_trace_itd(EHCIState *s, hwaddr addr, EHCIitd *itd)
408 trace_usb_ehci_itd(addr, itd->next,
409 get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT),
410 get_field(itd->bufptr[2], ITD_BUFPTR_MULT),
411 get_field(itd->bufptr[0], ITD_BUFPTR_EP),
412 get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR));
415 static void ehci_trace_sitd(EHCIState *s, hwaddr addr,
418 trace_usb_ehci_sitd(addr, sitd->next,
419 (bool)(sitd->results & SITD_RESULTS_ACTIVE));
422 static void ehci_trace_guest_bug(EHCIState *s, const char *message)
424 trace_usb_ehci_guest_bug(message);
425 fprintf(stderr, "ehci warning: %s\n", message);
428 static inline bool ehci_enabled(EHCIState *s)
430 return s->usbcmd & USBCMD_RUNSTOP;
433 static inline bool ehci_async_enabled(EHCIState *s)
435 return ehci_enabled(s) && (s->usbcmd & USBCMD_ASE);
438 static inline bool ehci_periodic_enabled(EHCIState *s)
440 return ehci_enabled(s) && (s->usbcmd & USBCMD_PSE);
443 /* Get an array of dwords from main memory */
444 static inline int get_dwords(EHCIState *ehci, uint32_t addr,
445 uint32_t *buf, int num)
450 ehci_raise_irq(ehci, USBSTS_HSE);
451 ehci->usbcmd &= ~USBCMD_RUNSTOP;
452 trace_usb_ehci_dma_error();
456 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
457 dma_memory_read(ehci->as, addr, buf, sizeof(*buf));
458 *buf = le32_to_cpu(*buf);
464 /* Put an array of dwords in to main memory */
465 static inline int put_dwords(EHCIState *ehci, uint32_t addr,
466 uint32_t *buf, int num)
471 ehci_raise_irq(ehci, USBSTS_HSE);
472 ehci->usbcmd &= ~USBCMD_RUNSTOP;
473 trace_usb_ehci_dma_error();
477 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
478 uint32_t tmp = cpu_to_le32(*buf);
479 dma_memory_write(ehci->as, addr, &tmp, sizeof(tmp));
485 static int ehci_get_pid(EHCIqtd *qtd)
487 switch (get_field(qtd->token, QTD_TOKEN_PID)) {
489 return USB_TOKEN_OUT;
493 return USB_TOKEN_SETUP;
495 fprintf(stderr, "bad token\n");
500 static bool ehci_verify_qh(EHCIQueue *q, EHCIqh *qh)
502 uint32_t devaddr = get_field(qh->epchar, QH_EPCHAR_DEVADDR);
503 uint32_t endp = get_field(qh->epchar, QH_EPCHAR_EP);
504 if ((devaddr != get_field(q->qh.epchar, QH_EPCHAR_DEVADDR)) ||
505 (endp != get_field(q->qh.epchar, QH_EPCHAR_EP)) ||
506 (qh->current_qtd != q->qh.current_qtd) ||
507 (q->async && qh->next_qtd != q->qh.next_qtd) ||
508 (memcmp(&qh->altnext_qtd, &q->qh.altnext_qtd,
509 7 * sizeof(uint32_t)) != 0) ||
510 (q->dev != NULL && q->dev->addr != devaddr)) {
517 static bool ehci_verify_qtd(EHCIPacket *p, EHCIqtd *qtd)
519 if (p->qtdaddr != p->queue->qtdaddr ||
520 (p->queue->async && !NLPTR_TBIT(p->qtd.next) &&
521 (p->qtd.next != qtd->next)) ||
522 (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd->altnext)) ||
523 p->qtd.token != qtd->token ||
524 p->qtd.bufptr[0] != qtd->bufptr[0]) {
531 static bool ehci_verify_pid(EHCIQueue *q, EHCIqtd *qtd)
533 int ep = get_field(q->qh.epchar, QH_EPCHAR_EP);
534 int pid = ehci_get_pid(qtd);
536 /* Note the pid changing is normal for ep 0 (the control ep) */
537 if (q->last_pid && ep != 0 && pid != q->last_pid) {
544 /* Finish executing and writeback a packet outside of the regular
545 fetchqh -> fetchqtd -> execute -> writeback cycle */
546 static void ehci_writeback_async_complete_packet(EHCIPacket *p)
548 EHCIQueue *q = p->queue;
553 /* Verify the qh + qtd, like we do when going through fetchqh & fetchqtd */
554 get_dwords(q->ehci, NLPTR_GET(q->qhaddr),
555 (uint32_t *) &qh, sizeof(EHCIqh) >> 2);
556 get_dwords(q->ehci, NLPTR_GET(q->qtdaddr),
557 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2);
558 if (!ehci_verify_qh(q, &qh) || !ehci_verify_qtd(p, &qtd)) {
559 p->async = EHCI_ASYNC_INITIALIZED;
564 state = ehci_get_state(q->ehci, q->async);
565 ehci_state_executing(q);
566 ehci_state_writeback(q); /* Frees the packet! */
567 if (!(q->qh.token & QTD_TOKEN_HALT)) {
568 ehci_state_advqueue(q);
570 ehci_set_state(q->ehci, q->async, state);
573 /* packet management */
575 static EHCIPacket *ehci_alloc_packet(EHCIQueue *q)
579 p = g_new0(EHCIPacket, 1);
581 usb_packet_init(&p->packet);
582 QTAILQ_INSERT_TAIL(&q->packets, p, next);
583 trace_usb_ehci_packet_action(p->queue, p, "alloc");
587 static void ehci_free_packet(EHCIPacket *p)
589 if (p->async == EHCI_ASYNC_FINISHED &&
590 !(p->queue->qh.token & QTD_TOKEN_HALT)) {
591 ehci_writeback_async_complete_packet(p);
594 trace_usb_ehci_packet_action(p->queue, p, "free");
595 if (p->async == EHCI_ASYNC_INFLIGHT) {
596 usb_cancel_packet(&p->packet);
598 if (p->async == EHCI_ASYNC_FINISHED &&
599 p->packet.status == USB_RET_SUCCESS) {
601 "EHCI: Dropping completed packet from halted %s ep %02X\n",
602 (p->pid == USB_TOKEN_IN) ? "in" : "out",
603 get_field(p->queue->qh.epchar, QH_EPCHAR_EP));
605 if (p->async != EHCI_ASYNC_NONE) {
606 usb_packet_unmap(&p->packet, &p->sgl);
607 qemu_sglist_destroy(&p->sgl);
609 QTAILQ_REMOVE(&p->queue->packets, p, next);
610 usb_packet_cleanup(&p->packet);
614 /* queue management */
616 static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, uint32_t addr, int async)
618 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
621 q = g_malloc0(sizeof(*q));
625 QTAILQ_INIT(&q->packets);
626 QTAILQ_INSERT_HEAD(head, q, next);
627 trace_usb_ehci_queue_action(q, "alloc");
631 static void ehci_queue_stopped(EHCIQueue *q)
633 int endp = get_field(q->qh.epchar, QH_EPCHAR_EP);
635 if (!q->last_pid || !q->dev) {
639 usb_device_ep_stopped(q->dev, usb_ep_get(q->dev, q->last_pid, endp));
642 static int ehci_cancel_queue(EHCIQueue *q)
647 p = QTAILQ_FIRST(&q->packets);
652 trace_usb_ehci_queue_action(q, "cancel");
656 } while ((p = QTAILQ_FIRST(&q->packets)) != NULL);
659 ehci_queue_stopped(q);
663 static int ehci_reset_queue(EHCIQueue *q)
667 trace_usb_ehci_queue_action(q, "reset");
668 packets = ehci_cancel_queue(q);
675 static void ehci_free_queue(EHCIQueue *q, const char *warn)
677 EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
680 trace_usb_ehci_queue_action(q, "free");
681 cancelled = ehci_cancel_queue(q);
682 if (warn && cancelled > 0) {
683 ehci_trace_guest_bug(q->ehci, warn);
685 QTAILQ_REMOVE(head, q, next);
689 static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
692 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
695 QTAILQ_FOREACH(q, head, next) {
696 if (addr == q->qhaddr) {
703 static void ehci_queues_rip_unused(EHCIState *ehci, int async)
705 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
706 const char *warn = async ? "guest unlinked busy QH" : NULL;
707 uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
710 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
713 q->ts = ehci->last_run_ns;
716 if (ehci->last_run_ns < q->ts + maxage) {
719 ehci_free_queue(q, warn);
723 static void ehci_queues_rip_unseen(EHCIState *ehci, int async)
725 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
728 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
730 ehci_free_queue(q, NULL);
735 static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
737 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
740 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
744 ehci_free_queue(q, NULL);
748 static void ehci_queues_rip_all(EHCIState *ehci, int async)
750 EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
751 const char *warn = async ? "guest stopped busy async schedule" : NULL;
754 QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
755 ehci_free_queue(q, warn);
759 /* Attach or detach a device on root hub */
761 static void ehci_attach(USBPort *port)
763 EHCIState *s = port->opaque;
764 uint32_t *portsc = &s->portsc[port->index];
765 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
767 trace_usb_ehci_port_attach(port->index, owner, port->dev->product_desc);
769 if (*portsc & PORTSC_POWNER) {
770 USBPort *companion = s->companion_ports[port->index];
771 companion->dev = port->dev;
772 companion->ops->attach(companion);
776 *portsc |= PORTSC_CONNECT;
777 *portsc |= PORTSC_CSC;
779 ehci_raise_irq(s, USBSTS_PCD);
782 static void ehci_detach(USBPort *port)
784 EHCIState *s = port->opaque;
785 uint32_t *portsc = &s->portsc[port->index];
786 const char *owner = (*portsc & PORTSC_POWNER) ? "comp" : "ehci";
788 trace_usb_ehci_port_detach(port->index, owner);
790 if (*portsc & PORTSC_POWNER) {
791 USBPort *companion = s->companion_ports[port->index];
792 companion->ops->detach(companion);
793 companion->dev = NULL;
795 * EHCI spec 4.2.2: "When a disconnect occurs... On the event,
796 * the port ownership is returned immediately to the EHCI controller."
798 *portsc &= ~PORTSC_POWNER;
802 ehci_queues_rip_device(s, port->dev, 0);
803 ehci_queues_rip_device(s, port->dev, 1);
805 *portsc &= ~(PORTSC_CONNECT|PORTSC_PED);
806 *portsc |= PORTSC_CSC;
808 ehci_raise_irq(s, USBSTS_PCD);
811 static void ehci_child_detach(USBPort *port, USBDevice *child)
813 EHCIState *s = port->opaque;
814 uint32_t portsc = s->portsc[port->index];
816 if (portsc & PORTSC_POWNER) {
817 USBPort *companion = s->companion_ports[port->index];
818 companion->ops->child_detach(companion, child);
822 ehci_queues_rip_device(s, child, 0);
823 ehci_queues_rip_device(s, child, 1);
826 static void ehci_wakeup(USBPort *port)
828 EHCIState *s = port->opaque;
829 uint32_t portsc = s->portsc[port->index];
831 if (portsc & PORTSC_POWNER) {
832 USBPort *companion = s->companion_ports[port->index];
833 if (companion->ops->wakeup) {
834 companion->ops->wakeup(companion);
839 qemu_bh_schedule(s->async_bh);
842 static int ehci_register_companion(USBBus *bus, USBPort *ports[],
843 uint32_t portcount, uint32_t firstport)
845 EHCIState *s = container_of(bus, EHCIState, bus);
848 if (firstport + portcount > NB_PORTS) {
849 qerror_report(QERR_INVALID_PARAMETER_VALUE, "firstport",
850 "firstport on masterbus");
851 error_printf_unless_qmp(
852 "firstport value of %u makes companion take ports %u - %u, which "
853 "is outside of the valid range of 0 - %u\n", firstport, firstport,
854 firstport + portcount - 1, NB_PORTS - 1);
858 for (i = 0; i < portcount; i++) {
859 if (s->companion_ports[firstport + i]) {
860 qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
862 error_printf_unless_qmp(
863 "port %u on masterbus %s already has a companion assigned\n",
864 firstport + i, bus->qbus.name);
869 for (i = 0; i < portcount; i++) {
870 s->companion_ports[firstport + i] = ports[i];
871 s->ports[firstport + i].speedmask |=
872 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL;
873 /* Ensure devs attached before the initial reset go to the companion */
874 s->portsc[firstport + i] = PORTSC_POWNER;
877 s->companion_count++;
878 s->caps[0x05] = (s->companion_count << 4) | portcount;
883 static void ehci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
886 EHCIState *s = container_of(bus, EHCIState, bus);
887 uint32_t portsc = s->portsc[ep->dev->port->index];
889 if (portsc & PORTSC_POWNER) {
893 s->periodic_sched_active = PERIODIC_ACTIVE;
894 qemu_bh_schedule(s->async_bh);
897 static USBDevice *ehci_find_device(EHCIState *ehci, uint8_t addr)
903 for (i = 0; i < NB_PORTS; i++) {
904 port = &ehci->ports[i];
905 if (!(ehci->portsc[i] & PORTSC_PED)) {
906 DPRINTF("Port %d not enabled\n", i);
909 dev = usb_find_device(port, addr);
917 /* 4.1 host controller initialization */
918 static void ehci_reset(void *opaque)
920 EHCIState *s = opaque;
922 USBDevice *devs[NB_PORTS];
924 trace_usb_ehci_reset();
927 * Do the detach before touching portsc, so that it correctly gets send to
928 * us or to our companion based on PORTSC_POWNER before the reset.
930 for(i = 0; i < NB_PORTS; i++) {
931 devs[i] = s->ports[i].dev;
932 if (devs[i] && devs[i]->attached) {
933 usb_detach(&s->ports[i]);
937 memset(&s->opreg, 0x00, sizeof(s->opreg));
938 memset(&s->portsc, 0x00, sizeof(s->portsc));
940 s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
941 s->usbsts = USBSTS_HALT;
942 s->usbsts_pending = 0;
943 s->usbsts_frindex = 0;
945 s->astate = EST_INACTIVE;
946 s->pstate = EST_INACTIVE;
948 for(i = 0; i < NB_PORTS; i++) {
949 if (s->companion_ports[i]) {
950 s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
952 s->portsc[i] = PORTSC_PPOWER;
954 if (devs[i] && devs[i]->attached) {
955 usb_attach(&s->ports[i]);
956 usb_device_reset(devs[i]);
959 ehci_queues_rip_all(s, 0);
960 ehci_queues_rip_all(s, 1);
961 qemu_del_timer(s->frame_timer);
962 qemu_bh_cancel(s->async_bh);
965 static uint64_t ehci_caps_read(void *ptr, hwaddr addr,
969 return s->caps[addr];
972 static uint64_t ehci_opreg_read(void *ptr, hwaddr addr,
980 /* Round down to mult of 8, else it can go backwards on migration */
981 val = s->frindex & ~7;
984 val = s->opreg[addr >> 2];
987 trace_usb_ehci_opreg_read(addr + s->opregbase, addr2str(addr), val);
991 static uint64_t ehci_port_read(void *ptr, hwaddr addr,
997 val = s->portsc[addr >> 2];
998 trace_usb_ehci_portsc_read(addr + s->portscbase, addr >> 2, val);
1002 static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner)
1004 USBDevice *dev = s->ports[port].dev;
1005 uint32_t *portsc = &s->portsc[port];
1008 if (s->companion_ports[port] == NULL)
1011 owner = owner & PORTSC_POWNER;
1012 orig = *portsc & PORTSC_POWNER;
1014 if (!(owner ^ orig)) {
1018 if (dev && dev->attached) {
1019 usb_detach(&s->ports[port]);
1022 *portsc &= ~PORTSC_POWNER;
1025 if (dev && dev->attached) {
1026 usb_attach(&s->ports[port]);
1030 static void ehci_port_write(void *ptr, hwaddr addr,
1031 uint64_t val, unsigned size)
1034 int port = addr >> 2;
1035 uint32_t *portsc = &s->portsc[port];
1036 uint32_t old = *portsc;
1037 USBDevice *dev = s->ports[port].dev;
1039 trace_usb_ehci_portsc_write(addr + s->portscbase, addr >> 2, val);
1041 /* Clear rwc bits */
1042 *portsc &= ~(val & PORTSC_RWC_MASK);
1043 /* The guest may clear, but not set the PED bit */
1044 *portsc &= val | ~PORTSC_PED;
1045 /* POWNER is masked out by RO_MASK as it is RO when we've no companion */
1046 handle_port_owner_write(s, port, val);
1047 /* And finally apply RO_MASK */
1048 val &= PORTSC_RO_MASK;
1050 if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
1051 trace_usb_ehci_port_reset(port, 1);
1054 if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
1055 trace_usb_ehci_port_reset(port, 0);
1056 if (dev && dev->attached) {
1057 usb_port_reset(&s->ports[port]);
1058 *portsc &= ~PORTSC_CSC;
1062 * Table 2.16 Set the enable bit(and enable bit change) to indicate
1063 * to SW that this port has a high speed device attached
1065 if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
1070 *portsc &= ~PORTSC_RO_MASK;
1072 trace_usb_ehci_portsc_change(addr + s->portscbase, addr >> 2, *portsc, old);
1075 static void ehci_opreg_write(void *ptr, hwaddr addr,
1076 uint64_t val, unsigned size)
1079 uint32_t *mmio = s->opreg + (addr >> 2);
1080 uint32_t old = *mmio;
1083 trace_usb_ehci_opreg_write(addr + s->opregbase, addr2str(addr), val);
1087 if (val & USBCMD_HCRESET) {
1093 /* not supporting dynamic frame list size at the moment */
1094 if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
1095 fprintf(stderr, "attempt to set frame list size -- value %d\n",
1096 (int)val & USBCMD_FLS);
1100 if (val & USBCMD_IAAD) {
1102 * Process IAAD immediately, otherwise the Linux IAAD watchdog may
1103 * trigger and re-use a qh without us seeing the unlink.
1105 s->async_stepdown = 0;
1106 qemu_bh_schedule(s->async_bh);
1107 trace_usb_ehci_doorbell_ring();
1110 if (((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & val) !=
1111 ((USBCMD_RUNSTOP | USBCMD_PSE | USBCMD_ASE) & s->usbcmd)) {
1112 if (s->pstate == EST_INACTIVE) {
1113 SET_LAST_RUN_CLOCK(s);
1115 s->usbcmd = val; /* Set usbcmd for ehci_update_halt() */
1116 ehci_update_halt(s);
1117 s->async_stepdown = 0;
1118 qemu_bh_schedule(s->async_bh);
1123 val &= USBSTS_RO_MASK; // bits 6 through 31 are RO
1124 ehci_clear_usbsts(s, val); // bits 0 through 5 are R/WC
1130 val &= USBINTR_MASK;
1131 if (ehci_enabled(s) && (USBSTS_FLR & val)) {
1132 qemu_bh_schedule(s->async_bh);
1137 val &= 0x00003fff; /* frindex is 14bits */
1138 s->usbsts_frindex = val;
1144 for(i = 0; i < NB_PORTS; i++)
1145 handle_port_owner_write(s, i, 0);
1149 case PERIODICLISTBASE:
1150 if (ehci_periodic_enabled(s)) {
1152 "ehci: PERIODIC list base register set while periodic schedule\n"
1153 " is enabled and HC is enabled\n");
1158 if (ehci_async_enabled(s)) {
1160 "ehci: ASYNC list address register set while async schedule\n"
1161 " is enabled and HC is enabled\n");
1167 trace_usb_ehci_opreg_change(addr + s->opregbase, addr2str(addr),
1172 * Write the qh back to guest physical memory. This step isn't
1173 * in the EHCI spec but we need to do it since we don't share
1174 * physical memory with our guest VM.
1176 * The first three dwords are read-only for the EHCI, so skip them
1177 * when writing back the qh.
1179 static void ehci_flush_qh(EHCIQueue *q)
1181 uint32_t *qh = (uint32_t *) &q->qh;
1182 uint32_t dwords = sizeof(EHCIqh) >> 2;
1183 uint32_t addr = NLPTR_GET(q->qhaddr);
1185 put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
1190 static int ehci_qh_do_overlay(EHCIQueue *q)
1192 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1200 assert(p->qtdaddr == q->qtdaddr);
1202 // remember values in fields to preserve in qh after overlay
1204 dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE;
1205 ping = q->qh.token & QTD_TOKEN_PING;
1207 q->qh.current_qtd = p->qtdaddr;
1208 q->qh.next_qtd = p->qtd.next;
1209 q->qh.altnext_qtd = p->qtd.altnext;
1210 q->qh.token = p->qtd.token;
1213 eps = get_field(q->qh.epchar, QH_EPCHAR_EPS);
1214 if (eps == EHCI_QH_EPS_HIGH) {
1215 q->qh.token &= ~QTD_TOKEN_PING;
1216 q->qh.token |= ping;
1219 reload = get_field(q->qh.epchar, QH_EPCHAR_RL);
1220 set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
1222 for (i = 0; i < 5; i++) {
1223 q->qh.bufptr[i] = p->qtd.bufptr[i];
1226 if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
1227 // preserve QH DT bit
1228 q->qh.token &= ~QTD_TOKEN_DTOGGLE;
1229 q->qh.token |= dtoggle;
1232 q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
1233 q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
1240 static int ehci_init_transfer(EHCIPacket *p)
1242 uint32_t cpage, offset, bytes, plen;
1244 USBBus *bus = &p->queue->ehci->bus;
1245 BusState *qbus = BUS(bus);
1247 cpage = get_field(p->qtd.token, QTD_TOKEN_CPAGE);
1248 bytes = get_field(p->qtd.token, QTD_TOKEN_TBYTES);
1249 offset = p->qtd.bufptr[0] & ~QTD_BUFPTR_MASK;
1250 qemu_sglist_init(&p->sgl, qbus->parent, 5, p->queue->ehci->as);
1254 fprintf(stderr, "cpage out of range (%d)\n", cpage);
1258 page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;
1261 if (plen > 4096 - offset) {
1262 plen = 4096 - offset;
1267 qemu_sglist_add(&p->sgl, page, plen);
1273 static void ehci_finish_transfer(EHCIQueue *q, int len)
1275 uint32_t cpage, offset;
1278 /* update cpage & offset */
1279 cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE);
1280 offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
1283 cpage += offset >> QTD_BUFPTR_SH;
1284 offset &= ~QTD_BUFPTR_MASK;
1286 set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE);
1287 q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
1288 q->qh.bufptr[0] |= offset;
1292 static void ehci_async_complete_packet(USBPort *port, USBPacket *packet)
1295 EHCIState *s = port->opaque;
1296 uint32_t portsc = s->portsc[port->index];
1298 if (portsc & PORTSC_POWNER) {
1299 USBPort *companion = s->companion_ports[port->index];
1300 companion->ops->complete(companion, packet);
1304 p = container_of(packet, EHCIPacket, packet);
1305 assert(p->async == EHCI_ASYNC_INFLIGHT);
1307 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
1308 trace_usb_ehci_packet_action(p->queue, p, "remove");
1309 ehci_free_packet(p);
1313 trace_usb_ehci_packet_action(p->queue, p, "wakeup");
1314 p->async = EHCI_ASYNC_FINISHED;
1316 if (!p->queue->async) {
1317 s->periodic_sched_active = PERIODIC_ACTIVE;
1319 qemu_bh_schedule(s->async_bh);
1322 static void ehci_execute_complete(EHCIQueue *q)
1324 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1328 assert(p->qtdaddr == q->qtdaddr);
1329 assert(p->async == EHCI_ASYNC_INITIALIZED ||
1330 p->async == EHCI_ASYNC_FINISHED);
1332 DPRINTF("execute_complete: qhaddr 0x%x, next 0x%x, qtdaddr 0x%x, "
1333 "status %d, actual_length %d\n",
1334 q->qhaddr, q->qh.next, q->qtdaddr,
1335 p->packet.status, p->packet.actual_length);
1337 switch (p->packet.status) {
1338 case USB_RET_SUCCESS:
1340 case USB_RET_IOERROR:
1342 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
1343 set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
1344 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1347 q->qh.token |= QTD_TOKEN_HALT;
1348 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1351 set_field(&q->qh.altnext_qtd, 0, QH_ALTNEXT_NAKCNT);
1352 return; /* We're not done yet with this transaction */
1353 case USB_RET_BABBLE:
1354 q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE);
1355 ehci_raise_irq(q->ehci, USBSTS_ERRINT);
1358 /* should not be triggerable */
1359 fprintf(stderr, "USB invalid response %d\n", p->packet.status);
1364 /* TODO check 4.12 for splits */
1365 tbytes = get_field(q->qh.token, QTD_TOKEN_TBYTES);
1366 if (tbytes && p->pid == USB_TOKEN_IN) {
1367 tbytes -= p->packet.actual_length;
1369 /* 4.15.1.2 must raise int on a short input packet */
1370 ehci_raise_irq(q->ehci, USBSTS_INT);
1372 q->ehci->int_req_by_async = true;
1378 DPRINTF("updating tbytes to %d\n", tbytes);
1379 set_field(&q->qh.token, tbytes, QTD_TOKEN_TBYTES);
1381 ehci_finish_transfer(q, p->packet.actual_length);
1382 usb_packet_unmap(&p->packet, &p->sgl);
1383 qemu_sglist_destroy(&p->sgl);
1384 p->async = EHCI_ASYNC_NONE;
1386 q->qh.token ^= QTD_TOKEN_DTOGGLE;
1387 q->qh.token &= ~QTD_TOKEN_ACTIVE;
1389 if (q->qh.token & QTD_TOKEN_IOC) {
1390 ehci_raise_irq(q->ehci, USBSTS_INT);
1392 q->ehci->int_req_by_async = true;
1397 /* 4.10.3 returns "again" */
1398 static int ehci_execute(EHCIPacket *p, const char *action)
1404 assert(p->async == EHCI_ASYNC_NONE ||
1405 p->async == EHCI_ASYNC_INITIALIZED);
1407 if (!(p->qtd.token & QTD_TOKEN_ACTIVE)) {
1408 fprintf(stderr, "Attempting to execute inactive qtd\n");
1412 if (get_field(p->qtd.token, QTD_TOKEN_TBYTES) > BUFF_SIZE) {
1413 ehci_trace_guest_bug(p->queue->ehci,
1414 "guest requested more bytes than allowed");
1418 if (!ehci_verify_pid(p->queue, &p->qtd)) {
1419 ehci_queue_stopped(p->queue); /* Mark the ep in the prev dir stopped */
1421 p->pid = ehci_get_pid(&p->qtd);
1422 p->queue->last_pid = p->pid;
1423 endp = get_field(p->queue->qh.epchar, QH_EPCHAR_EP);
1424 ep = usb_ep_get(p->queue->dev, p->pid, endp);
1426 if (p->async == EHCI_ASYNC_NONE) {
1427 if (ehci_init_transfer(p) != 0) {
1431 spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
1432 usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
1433 (p->qtd.token & QTD_TOKEN_IOC) != 0);
1434 usb_packet_map(&p->packet, &p->sgl);
1435 p->async = EHCI_ASYNC_INITIALIZED;
1438 trace_usb_ehci_packet_action(p->queue, p, action);
1439 usb_handle_packet(p->queue->dev, &p->packet);
1440 DPRINTF("submit: qh 0x%x next 0x%x qtd 0x%x pid 0x%x len %zd endp 0x%x "
1441 "status %d actual_length %d\n", p->queue->qhaddr, p->qtd.next,
1442 p->qtdaddr, p->pid, p->packet.iov.size, endp, p->packet.status,
1443 p->packet.actual_length);
1445 if (p->packet.actual_length > BUFF_SIZE) {
1446 fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
1456 static int ehci_process_itd(EHCIState *ehci,
1462 uint32_t i, len, pid, dir, devaddr, endp;
1463 uint32_t pg, off, ptr1, ptr2, max, mult;
1465 ehci->periodic_sched_active = PERIODIC_ACTIVE;
1467 dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
1468 devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
1469 endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
1470 max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
1471 mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
1473 for(i = 0; i < 8; i++) {
1474 if (itd->transact[i] & ITD_XACT_ACTIVE) {
1475 pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
1476 off = itd->transact[i] & ITD_XACT_OFFSET_MASK;
1477 ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK);
1478 ptr2 = (itd->bufptr[pg+1] & ITD_BUFPTR_MASK);
1479 len = get_field(itd->transact[i], ITD_XACT_LENGTH);
1481 if (len > max * mult) {
1485 if (len > BUFF_SIZE) {
1489 qemu_sglist_init(&ehci->isgl, DEVICE(ehci), 2, ehci->as);
1490 if (off + len > 4096) {
1491 /* transfer crosses page border */
1492 uint32_t len2 = off + len - 4096;
1493 uint32_t len1 = len - len2;
1494 qemu_sglist_add(&ehci->isgl, ptr1 + off, len1);
1495 qemu_sglist_add(&ehci->isgl, ptr2, len2);
1497 qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
1500 pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
1502 dev = ehci_find_device(ehci, devaddr);
1503 ep = usb_ep_get(dev, pid, endp);
1504 if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
1505 usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
1506 (itd->transact[i] & ITD_XACT_IOC) != 0);
1507 usb_packet_map(&ehci->ipacket, &ehci->isgl);
1508 usb_handle_packet(dev, &ehci->ipacket);
1509 usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
1511 DPRINTF("ISOCH: attempt to addess non-iso endpoint\n");
1512 ehci->ipacket.status = USB_RET_NAK;
1513 ehci->ipacket.actual_length = 0;
1515 qemu_sglist_destroy(&ehci->isgl);
1517 switch (ehci->ipacket.status) {
1518 case USB_RET_SUCCESS:
1521 fprintf(stderr, "Unexpected iso usb result: %d\n",
1522 ehci->ipacket.status);
1524 case USB_RET_IOERROR:
1526 /* 3.3.2: XACTERR is only allowed on IN transactions */
1528 itd->transact[i] |= ITD_XACT_XACTERR;
1529 ehci_raise_irq(ehci, USBSTS_ERRINT);
1532 case USB_RET_BABBLE:
1533 itd->transact[i] |= ITD_XACT_BABBLE;
1534 ehci_raise_irq(ehci, USBSTS_ERRINT);
1537 /* no data for us, so do a zero-length transfer */
1538 ehci->ipacket.actual_length = 0;
1542 set_field(&itd->transact[i], len - ehci->ipacket.actual_length,
1543 ITD_XACT_LENGTH); /* OUT */
1545 set_field(&itd->transact[i], ehci->ipacket.actual_length,
1546 ITD_XACT_LENGTH); /* IN */
1548 if (itd->transact[i] & ITD_XACT_IOC) {
1549 ehci_raise_irq(ehci, USBSTS_INT);
1551 itd->transact[i] &= ~ITD_XACT_ACTIVE;
1558 /* This state is the entry point for asynchronous schedule
1559 * processing. Entry here consitutes a EHCI start event state (4.8.5)
1561 static int ehci_state_waitlisthead(EHCIState *ehci, int async)
1566 uint32_t entry = ehci->asynclistaddr;
1568 /* set reclamation flag at start event (4.8.6) */
1570 ehci_set_usbsts(ehci, USBSTS_REC);
1573 ehci_queues_rip_unused(ehci, async);
1575 /* Find the head of the list (4.9.1.1) */
1576 for(i = 0; i < MAX_QH; i++) {
1577 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &qh,
1578 sizeof(EHCIqh) >> 2) < 0) {
1581 ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
1583 if (qh.epchar & QH_EPCHAR_H) {
1585 entry |= (NLPTR_TYPE_QH << 1);
1588 ehci_set_fetch_addr(ehci, async, entry);
1589 ehci_set_state(ehci, async, EST_FETCHENTRY);
1595 if (entry == ehci->asynclistaddr) {
1600 /* no head found for list. */
1602 ehci_set_state(ehci, async, EST_ACTIVE);
1609 /* This state is the entry point for periodic schedule processing as
1610 * well as being a continuation state for async processing.
1612 static int ehci_state_fetchentry(EHCIState *ehci, int async)
1615 uint32_t entry = ehci_get_fetch_addr(ehci, async);
1617 if (NLPTR_TBIT(entry)) {
1618 ehci_set_state(ehci, async, EST_ACTIVE);
1622 /* section 4.8, only QH in async schedule */
1623 if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
1624 fprintf(stderr, "non queue head request in async schedule\n");
1628 switch (NLPTR_TYPE_GET(entry)) {
1630 ehci_set_state(ehci, async, EST_FETCHQH);
1634 case NLPTR_TYPE_ITD:
1635 ehci_set_state(ehci, async, EST_FETCHITD);
1639 case NLPTR_TYPE_STITD:
1640 ehci_set_state(ehci, async, EST_FETCHSITD);
1645 /* TODO: handle FSTN type */
1646 fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
1647 "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
1655 static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)
1661 entry = ehci_get_fetch_addr(ehci, async);
1662 q = ehci_find_queue_by_qh(ehci, entry, async);
1664 q = ehci_alloc_queue(ehci, entry, async);
1669 /* we are going in circles -- stop processing */
1670 ehci_set_state(ehci, async, EST_ACTIVE);
1675 if (get_dwords(ehci, NLPTR_GET(q->qhaddr),
1676 (uint32_t *) &qh, sizeof(EHCIqh) >> 2) < 0) {
1680 ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &qh);
1683 * The overlay area of the qh should never be changed by the guest,
1684 * except when idle, in which case the reset is a nop.
1686 if (!ehci_verify_qh(q, &qh)) {
1687 if (ehci_reset_queue(q) > 0) {
1688 ehci_trace_guest_bug(ehci, "guest updated active QH");
1693 q->transact_ctr = get_field(q->qh.epcap, QH_EPCAP_MULT);
1694 if (q->transact_ctr == 0) { /* Guest bug in some versions of windows */
1695 q->transact_ctr = 4;
1698 if (q->dev == NULL) {
1699 q->dev = ehci_find_device(q->ehci,
1700 get_field(q->qh.epchar, QH_EPCHAR_DEVADDR));
1703 if (async && (q->qh.epchar & QH_EPCHAR_H)) {
1705 /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
1706 if (ehci->usbsts & USBSTS_REC) {
1707 ehci_clear_usbsts(ehci, USBSTS_REC);
1709 DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
1710 " - done processing\n", q->qhaddr);
1711 ehci_set_state(ehci, async, EST_ACTIVE);
1718 if (q->qhaddr != q->qh.next) {
1719 DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
1721 q->qh.epchar & QH_EPCHAR_H,
1722 q->qh.token & QTD_TOKEN_HALT,
1723 q->qh.token & QTD_TOKEN_ACTIVE,
1728 if (q->qh.token & QTD_TOKEN_HALT) {
1729 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1731 } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&
1732 (NLPTR_TBIT(q->qh.current_qtd) == 0)) {
1733 q->qtdaddr = q->qh.current_qtd;
1734 ehci_set_state(ehci, async, EST_FETCHQTD);
1737 /* EHCI spec version 1.0 Section 4.10.2 */
1738 ehci_set_state(ehci, async, EST_ADVANCEQUEUE);
1745 static int ehci_state_fetchitd(EHCIState *ehci, int async)
1751 entry = ehci_get_fetch_addr(ehci, async);
1753 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1754 sizeof(EHCIitd) >> 2) < 0) {
1757 ehci_trace_itd(ehci, entry, &itd);
1759 if (ehci_process_itd(ehci, &itd, entry) != 0) {
1763 put_dwords(ehci, NLPTR_GET(entry), (uint32_t *) &itd,
1764 sizeof(EHCIitd) >> 2);
1765 ehci_set_fetch_addr(ehci, async, itd.next);
1766 ehci_set_state(ehci, async, EST_FETCHENTRY);
1771 static int ehci_state_fetchsitd(EHCIState *ehci, int async)
1777 entry = ehci_get_fetch_addr(ehci, async);
1779 if (get_dwords(ehci, NLPTR_GET(entry), (uint32_t *)&sitd,
1780 sizeof(EHCIsitd) >> 2) < 0) {
1783 ehci_trace_sitd(ehci, entry, &sitd);
1785 if (!(sitd.results & SITD_RESULTS_ACTIVE)) {
1786 /* siTD is not active, nothing to do */;
1788 /* TODO: split transfers are not implemented */
1789 fprintf(stderr, "WARNING: Skipping active siTD\n");
1792 ehci_set_fetch_addr(ehci, async, sitd.next);
1793 ehci_set_state(ehci, async, EST_FETCHENTRY);
1797 /* Section 4.10.2 - paragraph 3 */
1798 static int ehci_state_advqueue(EHCIQueue *q)
1801 /* TO-DO: 4.10.2 - paragraph 2
1802 * if I-bit is set to 1 and QH is not active
1803 * go to horizontal QH
1806 ehci_set_state(ehci, async, EST_HORIZONTALQH);
1812 * want data and alt-next qTD is valid
1814 if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
1815 (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
1816 q->qtdaddr = q->qh.altnext_qtd;
1817 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1822 } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {
1823 q->qtdaddr = q->qh.next_qtd;
1824 ehci_set_state(q->ehci, q->async, EST_FETCHQTD);
1827 * no valid qTD, try next QH
1830 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1836 /* Section 4.10.2 - paragraph 4 */
1837 static int ehci_state_fetchqtd(EHCIQueue *q)
1843 if (get_dwords(q->ehci, NLPTR_GET(q->qtdaddr), (uint32_t *) &qtd,
1844 sizeof(EHCIqtd) >> 2) < 0) {
1847 ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);
1849 p = QTAILQ_FIRST(&q->packets);
1851 if (!ehci_verify_qtd(p, &qtd)) {
1852 ehci_cancel_queue(q);
1853 if (qtd.token & QTD_TOKEN_ACTIVE) {
1854 ehci_trace_guest_bug(q->ehci, "guest updated active qTD");
1859 ehci_qh_do_overlay(q);
1863 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1864 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1865 } else if (p != NULL) {
1867 case EHCI_ASYNC_NONE:
1868 case EHCI_ASYNC_INITIALIZED:
1869 /* Not yet executed (MULT), or previously nacked (int) packet */
1870 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1872 case EHCI_ASYNC_INFLIGHT:
1873 /* Check if the guest has added new tds to the queue */
1874 again = ehci_fill_queue(QTAILQ_LAST(&q->packets, pkts_head));
1875 /* Unfinished async handled packet, go horizontal */
1876 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1878 case EHCI_ASYNC_FINISHED:
1879 /* Complete executing of the packet */
1880 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
1884 p = ehci_alloc_packet(q);
1885 p->qtdaddr = q->qtdaddr;
1887 ehci_set_state(q->ehci, q->async, EST_EXECUTE);
1893 static int ehci_state_horizqh(EHCIQueue *q)
1897 if (ehci_get_fetch_addr(q->ehci, q->async) != q->qh.next) {
1898 ehci_set_fetch_addr(q->ehci, q->async, q->qh.next);
1899 ehci_set_state(q->ehci, q->async, EST_FETCHENTRY);
1902 ehci_set_state(q->ehci, q->async, EST_ACTIVE);
1908 /* Returns "again" */
1909 static int ehci_fill_queue(EHCIPacket *p)
1911 USBEndpoint *ep = p->packet.ep;
1912 EHCIQueue *q = p->queue;
1913 EHCIqtd qtd = p->qtd;
1917 if (NLPTR_TBIT(qtd.next) != 0) {
1922 * Detect circular td lists, Windows creates these, counting on the
1923 * active bit going low after execution to make the queue stop.
1925 QTAILQ_FOREACH(p, &q->packets, next) {
1926 if (p->qtdaddr == qtdaddr) {
1930 if (get_dwords(q->ehci, NLPTR_GET(qtdaddr),
1931 (uint32_t *) &qtd, sizeof(EHCIqtd) >> 2) < 0) {
1934 ehci_trace_qtd(q, NLPTR_GET(qtdaddr), &qtd);
1935 if (!(qtd.token & QTD_TOKEN_ACTIVE)) {
1938 if (!ehci_verify_pid(q, &qtd)) {
1939 ehci_trace_guest_bug(q->ehci, "guest queued token with wrong pid");
1942 p = ehci_alloc_packet(q);
1943 p->qtdaddr = qtdaddr;
1945 if (ehci_execute(p, "queue") == -1) {
1948 assert(p->packet.status == USB_RET_ASYNC);
1949 p->async = EHCI_ASYNC_INFLIGHT;
1952 usb_device_flush_ep_queue(ep->dev, ep);
1956 static int ehci_state_execute(EHCIQueue *q)
1958 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
1962 assert(p->qtdaddr == q->qtdaddr);
1964 if (ehci_qh_do_overlay(q) != 0) {
1968 // TODO verify enough time remains in the uframe as in 4.4.1.1
1969 // TODO write back ptr to async list when done or out of time
1971 /* 4.10.3, bottom of page 82, go horizontal on transaction counter == 0 */
1972 if (!q->async && q->transact_ctr == 0) {
1973 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1979 ehci_set_usbsts(q->ehci, USBSTS_REC);
1982 again = ehci_execute(p, "process");
1986 if (p->packet.status == USB_RET_ASYNC) {
1988 trace_usb_ehci_packet_action(p->queue, p, "async");
1989 p->async = EHCI_ASYNC_INFLIGHT;
1990 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
1992 again = ehci_fill_queue(p);
1999 ehci_set_state(q->ehci, q->async, EST_EXECUTING);
2006 static int ehci_state_executing(EHCIQueue *q)
2008 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
2011 assert(p->qtdaddr == q->qtdaddr);
2013 ehci_execute_complete(q);
2016 if (!q->async && q->transact_ctr > 0) {
2021 if (p->packet.status == USB_RET_NAK) {
2022 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
2024 ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
2032 static int ehci_state_writeback(EHCIQueue *q)
2034 EHCIPacket *p = QTAILQ_FIRST(&q->packets);
2035 uint32_t *qtd, addr;
2038 /* Write back the QTD from the QH area */
2040 assert(p->qtdaddr == q->qtdaddr);
2042 ehci_trace_qtd(q, NLPTR_GET(p->qtdaddr), (EHCIqtd *) &q->qh.next_qtd);
2043 qtd = (uint32_t *) &q->qh.next_qtd;
2044 addr = NLPTR_GET(p->qtdaddr);
2045 put_dwords(q->ehci, addr + 2 * sizeof(uint32_t), qtd + 2, 2);
2046 ehci_free_packet(p);
2049 * EHCI specs say go horizontal here.
2051 * We can also advance the queue here for performance reasons. We
2052 * need to take care to only take that shortcut in case we've
2053 * processed the qtd just written back without errors, i.e. halt
2056 if (q->qh.token & QTD_TOKEN_HALT) {
2057 ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
2060 ehci_set_state(q->ehci, q->async, EST_ADVANCEQUEUE);
2067 * This is the state machine that is common to both async and periodic
2070 static void ehci_advance_state(EHCIState *ehci, int async)
2072 EHCIQueue *q = NULL;
2076 switch(ehci_get_state(ehci, async)) {
2077 case EST_WAITLISTHEAD:
2078 again = ehci_state_waitlisthead(ehci, async);
2081 case EST_FETCHENTRY:
2082 again = ehci_state_fetchentry(ehci, async);
2086 q = ehci_state_fetchqh(ehci, async);
2088 assert(q->async == async);
2096 again = ehci_state_fetchitd(ehci, async);
2100 again = ehci_state_fetchsitd(ehci, async);
2103 case EST_ADVANCEQUEUE:
2105 again = ehci_state_advqueue(q);
2110 again = ehci_state_fetchqtd(q);
2113 case EST_HORIZONTALQH:
2115 again = ehci_state_horizqh(q);
2120 again = ehci_state_execute(q);
2122 ehci->async_stepdown = 0;
2129 ehci->async_stepdown = 0;
2131 again = ehci_state_executing(q);
2136 again = ehci_state_writeback(q);
2138 ehci->periodic_sched_active = PERIODIC_ACTIVE;
2143 fprintf(stderr, "Bad state!\n");
2150 fprintf(stderr, "processing error - resetting ehci HC\n");
2158 static void ehci_advance_async_state(EHCIState *ehci)
2160 const int async = 1;
2162 switch(ehci_get_state(ehci, async)) {
2164 if (!ehci_async_enabled(ehci)) {
2167 ehci_set_state(ehci, async, EST_ACTIVE);
2168 // No break, fall through to ACTIVE
2171 if (!ehci_async_enabled(ehci)) {
2172 ehci_queues_rip_all(ehci, async);
2173 ehci_set_state(ehci, async, EST_INACTIVE);
2177 /* make sure guest has acknowledged the doorbell interrupt */
2178 /* TO-DO: is this really needed? */
2179 if (ehci->usbsts & USBSTS_IAA) {
2180 DPRINTF("IAA status bit still set.\n");
2184 /* check that address register has been set */
2185 if (ehci->asynclistaddr == 0) {
2189 ehci_set_state(ehci, async, EST_WAITLISTHEAD);
2190 ehci_advance_state(ehci, async);
2192 /* If the doorbell is set, the guest wants to make a change to the
2193 * schedule. The host controller needs to release cached data.
2196 if (ehci->usbcmd & USBCMD_IAAD) {
2197 /* Remove all unseen qhs from the async qhs queue */
2198 ehci_queues_rip_unseen(ehci, async);
2199 trace_usb_ehci_doorbell_ack();
2200 ehci->usbcmd &= ~USBCMD_IAAD;
2201 ehci_raise_irq(ehci, USBSTS_IAA);
2206 /* this should only be due to a developer mistake */
2207 fprintf(stderr, "ehci: Bad asynchronous state %d. "
2208 "Resetting to active\n", ehci->astate);
2213 static void ehci_advance_periodic_state(EHCIState *ehci)
2217 const int async = 0;
2221 switch(ehci_get_state(ehci, async)) {
2223 if (!(ehci->frindex & 7) && ehci_periodic_enabled(ehci)) {
2224 ehci_set_state(ehci, async, EST_ACTIVE);
2225 // No break, fall through to ACTIVE
2230 if (!(ehci->frindex & 7) && !ehci_periodic_enabled(ehci)) {
2231 ehci_queues_rip_all(ehci, async);
2232 ehci_set_state(ehci, async, EST_INACTIVE);
2236 list = ehci->periodiclistbase & 0xfffff000;
2237 /* check that register has been set */
2241 list |= ((ehci->frindex & 0x1ff8) >> 1);
2243 if (get_dwords(ehci, list, &entry, 1) < 0) {
2247 DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
2248 ehci->frindex / 8, list, entry);
2249 ehci_set_fetch_addr(ehci, async,entry);
2250 ehci_set_state(ehci, async, EST_FETCHENTRY);
2251 ehci_advance_state(ehci, async);
2252 ehci_queues_rip_unused(ehci, async);
2256 /* this should only be due to a developer mistake */
2257 fprintf(stderr, "ehci: Bad periodic state %d. "
2258 "Resetting to active\n", ehci->pstate);
2263 static void ehci_update_frindex(EHCIState *ehci, int uframes)
2267 if (!ehci_enabled(ehci) && ehci->pstate == EST_INACTIVE) {
2271 for (i = 0; i < uframes; i++) {
2274 if (ehci->frindex == 0x00002000) {
2275 ehci_raise_irq(ehci, USBSTS_FLR);
2278 if (ehci->frindex == 0x00004000) {
2279 ehci_raise_irq(ehci, USBSTS_FLR);
2281 if (ehci->usbsts_frindex >= 0x00004000) {
2282 ehci->usbsts_frindex -= 0x00004000;
2284 ehci->usbsts_frindex = 0;
2290 static void ehci_frame_timer(void *opaque)
2292 EHCIState *ehci = opaque;
2294 int64_t expire_time, t_now;
2295 uint64_t ns_elapsed;
2296 int uframes, skipped_uframes;
2299 t_now = qemu_get_clock_ns(vm_clock);
2300 ns_elapsed = t_now - ehci->last_run_ns;
2301 uframes = ns_elapsed / UFRAME_TIMER_NS;
2303 if (ehci_periodic_enabled(ehci) || ehci->pstate != EST_INACTIVE) {
2306 if (uframes > (ehci->maxframes * 8)) {
2307 skipped_uframes = uframes - (ehci->maxframes * 8);
2308 ehci_update_frindex(ehci, skipped_uframes);
2309 ehci->last_run_ns += UFRAME_TIMER_NS * skipped_uframes;
2310 uframes -= skipped_uframes;
2311 DPRINTF("WARNING - EHCI skipped %d uframes\n", skipped_uframes);
2314 for (i = 0; i < uframes; i++) {
2316 * If we're running behind schedule, we should not catch up
2317 * too fast, as that will make some guests unhappy:
2318 * 1) We must process a minimum of MIN_UFR_PER_TICK frames,
2319 * otherwise we will never catch up
2320 * 2) Process frames until the guest has requested an irq (IOC)
2322 if (i >= MIN_UFR_PER_TICK) {
2323 ehci_commit_irq(ehci);
2324 if ((ehci->usbsts & USBINTR_MASK) & ehci->usbintr) {
2328 if (ehci->periodic_sched_active) {
2329 ehci->periodic_sched_active--;
2331 ehci_update_frindex(ehci, 1);
2332 if ((ehci->frindex & 7) == 0) {
2333 ehci_advance_periodic_state(ehci);
2335 ehci->last_run_ns += UFRAME_TIMER_NS;
2338 ehci->periodic_sched_active = 0;
2339 ehci_update_frindex(ehci, uframes);
2340 ehci->last_run_ns += UFRAME_TIMER_NS * uframes;
2343 if (ehci->periodic_sched_active) {
2344 ehci->async_stepdown = 0;
2345 } else if (ehci->async_stepdown < ehci->maxframes / 2) {
2346 ehci->async_stepdown++;
2349 /* Async is not inside loop since it executes everything it can once
2352 if (ehci_async_enabled(ehci) || ehci->astate != EST_INACTIVE) {
2354 ehci_advance_async_state(ehci);
2357 ehci_commit_irq(ehci);
2358 if (ehci->usbsts_pending) {
2360 ehci->async_stepdown = 0;
2363 if (ehci_enabled(ehci) && (ehci->usbintr & USBSTS_FLR)) {
2368 /* If we've raised int, we speed up the timer, so that we quickly
2369 * notice any new packets queued up in response */
2370 if (ehci->int_req_by_async && (ehci->usbsts & USBSTS_INT)) {
2371 expire_time = t_now + get_ticks_per_sec() / (FRAME_TIMER_FREQ * 4);
2372 ehci->int_req_by_async = false;
2374 expire_time = t_now + (get_ticks_per_sec()
2375 * (ehci->async_stepdown+1) / FRAME_TIMER_FREQ);
2377 qemu_mod_timer(ehci->frame_timer, expire_time);
2381 static const MemoryRegionOps ehci_mmio_caps_ops = {
2382 .read = ehci_caps_read,
2383 .valid.min_access_size = 1,
2384 .valid.max_access_size = 4,
2385 .impl.min_access_size = 1,
2386 .impl.max_access_size = 1,
2387 .endianness = DEVICE_LITTLE_ENDIAN,
2390 static const MemoryRegionOps ehci_mmio_opreg_ops = {
2391 .read = ehci_opreg_read,
2392 .write = ehci_opreg_write,
2393 .valid.min_access_size = 4,
2394 .valid.max_access_size = 4,
2395 .endianness = DEVICE_LITTLE_ENDIAN,
2398 static const MemoryRegionOps ehci_mmio_port_ops = {
2399 .read = ehci_port_read,
2400 .write = ehci_port_write,
2401 .valid.min_access_size = 4,
2402 .valid.max_access_size = 4,
2403 .endianness = DEVICE_LITTLE_ENDIAN,
2406 static USBPortOps ehci_port_ops = {
2407 .attach = ehci_attach,
2408 .detach = ehci_detach,
2409 .child_detach = ehci_child_detach,
2410 .wakeup = ehci_wakeup,
2411 .complete = ehci_async_complete_packet,
2414 static USBBusOps ehci_bus_ops = {
2415 .register_companion = ehci_register_companion,
2416 .wakeup_endpoint = ehci_wakeup_endpoint,
2419 static void usb_ehci_pre_save(void *opaque)
2421 EHCIState *ehci = opaque;
2422 uint32_t new_frindex;
2424 /* Round down frindex to a multiple of 8 for migration compatibility */
2425 new_frindex = ehci->frindex & ~7;
2426 ehci->last_run_ns -= (ehci->frindex - new_frindex) * UFRAME_TIMER_NS;
2427 ehci->frindex = new_frindex;
2430 static int usb_ehci_post_load(void *opaque, int version_id)
2432 EHCIState *s = opaque;
2435 for (i = 0; i < NB_PORTS; i++) {
2436 USBPort *companion = s->companion_ports[i];
2437 if (companion == NULL) {
2440 if (s->portsc[i] & PORTSC_POWNER) {
2441 companion->dev = s->ports[i].dev;
2443 companion->dev = NULL;
2450 static void usb_ehci_vm_state_change(void *opaque, int running, RunState state)
2452 EHCIState *ehci = opaque;
2455 * We don't migrate the EHCIQueue-s, instead we rebuild them for the
2456 * schedule in guest memory. We must do the rebuilt ASAP, so that
2457 * USB-devices which have async handled packages have a packet in the
2458 * ep queue to match the completion with.
2460 if (state == RUN_STATE_RUNNING) {
2461 ehci_advance_async_state(ehci);
2465 * The schedule rebuilt from guest memory could cause the migration dest
2466 * to miss a QH unlink, and fail to cancel packets, since the unlinked QH
2467 * will never have existed on the destination. Therefor we must flush the
2468 * async schedule on savevm to catch any not yet noticed unlinks.
2470 if (state == RUN_STATE_SAVE_VM) {
2471 ehci_advance_async_state(ehci);
2472 ehci_queues_rip_unseen(ehci, 1);
2476 const VMStateDescription vmstate_ehci = {
2477 .name = "ehci-core",
2479 .minimum_version_id = 1,
2480 .pre_save = usb_ehci_pre_save,
2481 .post_load = usb_ehci_post_load,
2482 .fields = (VMStateField[]) {
2483 /* mmio registers */
2484 VMSTATE_UINT32(usbcmd, EHCIState),
2485 VMSTATE_UINT32(usbsts, EHCIState),
2486 VMSTATE_UINT32_V(usbsts_pending, EHCIState, 2),
2487 VMSTATE_UINT32_V(usbsts_frindex, EHCIState, 2),
2488 VMSTATE_UINT32(usbintr, EHCIState),
2489 VMSTATE_UINT32(frindex, EHCIState),
2490 VMSTATE_UINT32(ctrldssegment, EHCIState),
2491 VMSTATE_UINT32(periodiclistbase, EHCIState),
2492 VMSTATE_UINT32(asynclistaddr, EHCIState),
2493 VMSTATE_UINT32(configflag, EHCIState),
2494 VMSTATE_UINT32(portsc[0], EHCIState),
2495 VMSTATE_UINT32(portsc[1], EHCIState),
2496 VMSTATE_UINT32(portsc[2], EHCIState),
2497 VMSTATE_UINT32(portsc[3], EHCIState),
2498 VMSTATE_UINT32(portsc[4], EHCIState),
2499 VMSTATE_UINT32(portsc[5], EHCIState),
2501 VMSTATE_TIMER(frame_timer, EHCIState),
2502 VMSTATE_UINT64(last_run_ns, EHCIState),
2503 VMSTATE_UINT32(async_stepdown, EHCIState),
2504 /* schedule state */
2505 VMSTATE_UINT32(astate, EHCIState),
2506 VMSTATE_UINT32(pstate, EHCIState),
2507 VMSTATE_UINT32(a_fetch_addr, EHCIState),
2508 VMSTATE_UINT32(p_fetch_addr, EHCIState),
2509 VMSTATE_END_OF_LIST()
2513 void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)
2517 if (s->portnr > NB_PORTS) {
2518 error_setg(errp, "Too many ports! Max. port number is %d.",
2523 usb_bus_new(&s->bus, &ehci_bus_ops, dev);
2524 for (i = 0; i < s->portnr; i++) {
2525 usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
2526 USB_SPEED_MASK_HIGH);
2527 s->ports[i].dev = 0;
2530 s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s);
2531 s->async_bh = qemu_bh_new(ehci_frame_timer, s);
2533 qemu_register_reset(ehci_reset, s);
2534 qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
2537 void usb_ehci_init(EHCIState *s, DeviceState *dev)
2539 /* 2.2 host controller interface version */
2540 s->caps[0x00] = (uint8_t)(s->opregbase - s->capsbase);
2541 s->caps[0x01] = 0x00;
2542 s->caps[0x02] = 0x00;
2543 s->caps[0x03] = 0x01; /* HC version */
2544 s->caps[0x04] = s->portnr; /* Number of downstream ports */
2545 s->caps[0x05] = 0x00; /* No companion ports at present */
2546 s->caps[0x06] = 0x00;
2547 s->caps[0x07] = 0x00;
2548 s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */
2549 s->caps[0x0a] = 0x00;
2550 s->caps[0x0b] = 0x00;
2552 QTAILQ_INIT(&s->aqueues);
2553 QTAILQ_INIT(&s->pqueues);
2554 usb_packet_init(&s->ipacket);
2556 memory_region_init(&s->mem, NULL, "ehci", MMIO_SIZE);
2557 memory_region_init_io(&s->mem_caps, NULL, &ehci_mmio_caps_ops, s,
2558 "capabilities", CAPA_SIZE);
2559 memory_region_init_io(&s->mem_opreg, NULL, &ehci_mmio_opreg_ops, s,
2560 "operational", s->portscbase);
2561 memory_region_init_io(&s->mem_ports, NULL, &ehci_mmio_port_ops, s,
2562 "ports", 4 * s->portnr);
2564 memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);
2565 memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);
2566 memory_region_add_subregion(&s->mem, s->opregbase + s->portscbase,
2571 * vim: expandtab ts=4