2 * USB UHCI controller emulation
4 * Copyright (c) 2005 Fabrice Bellard
6 * Copyright (c) 2008 Max Krasnyansky
7 * Magor rewrite of the UHCI data structures parser and frame processor
8 * Support for fully async operation and multiple outstanding transactions
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
31 #include "qemu-timer.h"
37 //#define DEBUG_DUMP_DATA
39 #define UHCI_CMD_FGR (1 << 4)
40 #define UHCI_CMD_EGSM (1 << 3)
41 #define UHCI_CMD_GRESET (1 << 2)
42 #define UHCI_CMD_HCRESET (1 << 1)
43 #define UHCI_CMD_RS (1 << 0)
45 #define UHCI_STS_HCHALTED (1 << 5)
46 #define UHCI_STS_HCPERR (1 << 4)
47 #define UHCI_STS_HSERR (1 << 3)
48 #define UHCI_STS_RD (1 << 2)
49 #define UHCI_STS_USBERR (1 << 1)
50 #define UHCI_STS_USBINT (1 << 0)
52 #define TD_CTRL_SPD (1 << 29)
53 #define TD_CTRL_ERROR_SHIFT 27
54 #define TD_CTRL_IOS (1 << 25)
55 #define TD_CTRL_IOC (1 << 24)
56 #define TD_CTRL_ACTIVE (1 << 23)
57 #define TD_CTRL_STALL (1 << 22)
58 #define TD_CTRL_BABBLE (1 << 20)
59 #define TD_CTRL_NAK (1 << 19)
60 #define TD_CTRL_TIMEOUT (1 << 18)
62 #define UHCI_PORT_SUSPEND (1 << 12)
63 #define UHCI_PORT_RESET (1 << 9)
64 #define UHCI_PORT_LSDA (1 << 8)
65 #define UHCI_PORT_RD (1 << 6)
66 #define UHCI_PORT_ENC (1 << 3)
67 #define UHCI_PORT_EN (1 << 2)
68 #define UHCI_PORT_CSC (1 << 1)
69 #define UHCI_PORT_CCS (1 << 0)
71 #define UHCI_PORT_READ_ONLY (0x1bb)
72 #define UHCI_PORT_WRITE_CLEAR (UHCI_PORT_CSC | UHCI_PORT_ENC)
74 #define FRAME_TIMER_FREQ 1000
76 #define FRAME_MAX_LOOPS 256
81 TD_RESULT_STOP_FRAME = 10,
84 TD_RESULT_ASYNC_START,
88 typedef struct UHCIState UHCIState;
89 typedef struct UHCIAsync UHCIAsync;
90 typedef struct UHCIQueue UHCIQueue;
93 * Pending async transaction.
94 * 'packet' must be the first field because completion
95 * handler does "(UHCIAsync *) pkt" cast.
102 QTAILQ_ENTRY(UHCIAsync) next;
111 QTAILQ_ENTRY(UHCIQueue) next;
112 QTAILQ_HEAD(, UHCIAsync) asyncs;
116 typedef struct UHCIPort {
124 USBBus bus; /* Note unused when we're a companion controller */
125 uint16_t cmd; /* cmd register */
127 uint16_t intr; /* interrupt enable register */
128 uint16_t frnum; /* frame number */
129 uint32_t fl_base_addr; /* frame list base address */
131 uint8_t status2; /* bit 0 and 1 are used to generate UHCI_STS_USBINT */
133 QEMUTimer *frame_timer;
135 uint32_t frame_bytes;
136 uint32_t frame_bandwidth;
137 UHCIPort ports[NB_PORTS];
139 /* Interrupts that should be raised at the end of the current frame. */
140 uint32_t pending_int_mask;
144 QTAILQ_HEAD(, UHCIQueue) queues;
145 uint8_t num_ports_vmstate;
152 typedef struct UHCI_TD {
154 uint32_t ctrl; /* see TD_CTRL_xxx */
159 typedef struct UHCI_QH {
164 static inline int32_t uhci_queue_token(UHCI_TD *td)
166 /* covers ep, dev, pid -> identifies the endpoint */
167 return td->token & 0x7ffff;
170 static UHCIQueue *uhci_queue_get(UHCIState *s, UHCI_TD *td)
172 uint32_t token = uhci_queue_token(td);
175 QTAILQ_FOREACH(queue, &s->queues, next) {
176 if (queue->token == token) {
181 queue = g_new0(UHCIQueue, 1);
183 queue->token = token;
184 QTAILQ_INIT(&queue->asyncs);
185 QTAILQ_INSERT_HEAD(&s->queues, queue, next);
186 trace_usb_uhci_queue_add(queue->token);
190 static void uhci_queue_free(UHCIQueue *queue)
192 UHCIState *s = queue->uhci;
194 trace_usb_uhci_queue_del(queue->token);
195 QTAILQ_REMOVE(&s->queues, queue, next);
199 static UHCIAsync *uhci_async_alloc(UHCIQueue *queue, uint32_t addr)
201 UHCIAsync *async = g_new0(UHCIAsync, 1);
203 async->queue = queue;
205 usb_packet_init(&async->packet);
206 pci_dma_sglist_init(&async->sgl, &queue->uhci->dev, 1);
207 trace_usb_uhci_packet_add(async->queue->token, async->td);
212 static void uhci_async_free(UHCIAsync *async)
214 trace_usb_uhci_packet_del(async->queue->token, async->td);
215 usb_packet_cleanup(&async->packet);
216 qemu_sglist_destroy(&async->sgl);
220 static void uhci_async_link(UHCIAsync *async)
222 UHCIQueue *queue = async->queue;
223 QTAILQ_INSERT_TAIL(&queue->asyncs, async, next);
224 trace_usb_uhci_packet_link_async(async->queue->token, async->td);
227 static void uhci_async_unlink(UHCIAsync *async)
229 UHCIQueue *queue = async->queue;
230 QTAILQ_REMOVE(&queue->asyncs, async, next);
231 trace_usb_uhci_packet_unlink_async(async->queue->token, async->td);
234 static void uhci_async_cancel(UHCIAsync *async)
236 trace_usb_uhci_packet_cancel(async->queue->token, async->td, async->done);
238 usb_cancel_packet(&async->packet);
239 uhci_async_free(async);
243 * Mark all outstanding async packets as invalid.
244 * This is used for canceling them when TDs are removed by the HCD.
246 static void uhci_async_validate_begin(UHCIState *s)
250 QTAILQ_FOREACH(queue, &s->queues, next) {
256 * Cancel async packets that are no longer valid
258 static void uhci_async_validate_end(UHCIState *s)
260 UHCIQueue *queue, *n;
263 QTAILQ_FOREACH_SAFE(queue, &s->queues, next, n) {
264 if (queue->valid > 0) {
267 while (!QTAILQ_EMPTY(&queue->asyncs)) {
268 async = QTAILQ_FIRST(&queue->asyncs);
269 uhci_async_unlink(async);
270 uhci_async_cancel(async);
272 uhci_queue_free(queue);
276 static void uhci_async_cancel_device(UHCIState *s, USBDevice *dev)
281 QTAILQ_FOREACH(queue, &s->queues, next) {
282 QTAILQ_FOREACH_SAFE(curr, &queue->asyncs, next, n) {
283 if (!usb_packet_is_inflight(&curr->packet) ||
284 curr->packet.ep->dev != dev) {
287 uhci_async_unlink(curr);
288 uhci_async_cancel(curr);
293 static void uhci_async_cancel_all(UHCIState *s)
295 UHCIQueue *queue, *nq;
298 QTAILQ_FOREACH_SAFE(queue, &s->queues, next, nq) {
299 QTAILQ_FOREACH_SAFE(curr, &queue->asyncs, next, n) {
300 uhci_async_unlink(curr);
301 uhci_async_cancel(curr);
303 uhci_queue_free(queue);
307 static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, UHCI_TD *td)
309 uint32_t token = uhci_queue_token(td);
313 QTAILQ_FOREACH(queue, &s->queues, next) {
314 if (queue->token == token) {
322 QTAILQ_FOREACH(async, &queue->asyncs, next) {
323 if (async->td == addr) {
331 static void uhci_update_irq(UHCIState *s)
334 if (((s->status2 & 1) && (s->intr & (1 << 2))) ||
335 ((s->status2 & 2) && (s->intr & (1 << 3))) ||
336 ((s->status & UHCI_STS_USBERR) && (s->intr & (1 << 0))) ||
337 ((s->status & UHCI_STS_RD) && (s->intr & (1 << 1))) ||
338 (s->status & UHCI_STS_HSERR) ||
339 (s->status & UHCI_STS_HCPERR)) {
344 qemu_set_irq(s->dev.irq[s->irq_pin], level);
347 static void uhci_reset(void *opaque)
349 UHCIState *s = opaque;
354 trace_usb_uhci_reset();
356 pci_conf = s->dev.config;
358 pci_conf[0x6a] = 0x01; /* usb clock */
359 pci_conf[0x6b] = 0x00;
367 for(i = 0; i < NB_PORTS; i++) {
370 if (port->port.dev && port->port.dev->attached) {
371 usb_port_reset(&port->port);
375 uhci_async_cancel_all(s);
376 qemu_bh_cancel(s->bh);
380 static const VMStateDescription vmstate_uhci_port = {
383 .minimum_version_id = 1,
384 .minimum_version_id_old = 1,
385 .fields = (VMStateField []) {
386 VMSTATE_UINT16(ctrl, UHCIPort),
387 VMSTATE_END_OF_LIST()
391 static int uhci_post_load(void *opaque, int version_id)
393 UHCIState *s = opaque;
395 if (version_id < 2) {
396 s->expire_time = qemu_get_clock_ns(vm_clock) +
397 (get_ticks_per_sec() / FRAME_TIMER_FREQ);
402 static const VMStateDescription vmstate_uhci = {
405 .minimum_version_id = 1,
406 .minimum_version_id_old = 1,
407 .post_load = uhci_post_load,
408 .fields = (VMStateField []) {
409 VMSTATE_PCI_DEVICE(dev, UHCIState),
410 VMSTATE_UINT8_EQUAL(num_ports_vmstate, UHCIState),
411 VMSTATE_STRUCT_ARRAY(ports, UHCIState, NB_PORTS, 1,
412 vmstate_uhci_port, UHCIPort),
413 VMSTATE_UINT16(cmd, UHCIState),
414 VMSTATE_UINT16(status, UHCIState),
415 VMSTATE_UINT16(intr, UHCIState),
416 VMSTATE_UINT16(frnum, UHCIState),
417 VMSTATE_UINT32(fl_base_addr, UHCIState),
418 VMSTATE_UINT8(sof_timing, UHCIState),
419 VMSTATE_UINT8(status2, UHCIState),
420 VMSTATE_TIMER(frame_timer, UHCIState),
421 VMSTATE_INT64_V(expire_time, UHCIState, 2),
422 VMSTATE_END_OF_LIST()
426 static void uhci_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
428 UHCIState *s = opaque;
438 static uint32_t uhci_ioport_readb(void *opaque, uint32_t addr)
440 UHCIState *s = opaque;
455 static void uhci_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
457 UHCIState *s = opaque;
460 trace_usb_uhci_mmio_writew(addr, val);
464 if ((val & UHCI_CMD_RS) && !(s->cmd & UHCI_CMD_RS)) {
465 /* start frame processing */
466 trace_usb_uhci_schedule_start();
467 s->expire_time = qemu_get_clock_ns(vm_clock) +
468 (get_ticks_per_sec() / FRAME_TIMER_FREQ);
469 qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock));
470 s->status &= ~UHCI_STS_HCHALTED;
471 } else if (!(val & UHCI_CMD_RS)) {
472 s->status |= UHCI_STS_HCHALTED;
474 if (val & UHCI_CMD_GRESET) {
478 /* send reset on the USB bus */
479 for(i = 0; i < NB_PORTS; i++) {
481 usb_device_reset(port->port.dev);
486 if (val & UHCI_CMD_HCRESET) {
494 /* XXX: the chip spec is not coherent, so we add a hidden
495 register to distinguish between IOC and SPD */
496 if (val & UHCI_STS_USBINT)
505 if (s->status & UHCI_STS_HCHALTED)
506 s->frnum = val & 0x7ff;
518 dev = port->port.dev;
519 if (dev && dev->attached) {
521 if ( (val & UHCI_PORT_RESET) &&
522 !(port->ctrl & UHCI_PORT_RESET) ) {
523 usb_device_reset(dev);
526 port->ctrl &= UHCI_PORT_READ_ONLY;
527 port->ctrl |= (val & ~UHCI_PORT_READ_ONLY);
528 /* some bits are reset when a '1' is written to them */
529 port->ctrl &= ~(val & UHCI_PORT_WRITE_CLEAR);
535 static uint32_t uhci_ioport_readw(void *opaque, uint32_t addr)
537 UHCIState *s = opaque;
567 val = 0xff7f; /* disabled port */
571 trace_usb_uhci_mmio_readw(addr, val);
576 static void uhci_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
578 UHCIState *s = opaque;
581 trace_usb_uhci_mmio_writel(addr, val);
585 s->fl_base_addr = val & ~0xfff;
590 static uint32_t uhci_ioport_readl(void *opaque, uint32_t addr)
592 UHCIState *s = opaque;
598 val = s->fl_base_addr;
604 trace_usb_uhci_mmio_readl(addr, val);
608 /* signal resume if controller suspended */
609 static void uhci_resume (void *opaque)
611 UHCIState *s = (UHCIState *)opaque;
616 if (s->cmd & UHCI_CMD_EGSM) {
617 s->cmd |= UHCI_CMD_FGR;
618 s->status |= UHCI_STS_RD;
623 static void uhci_attach(USBPort *port1)
625 UHCIState *s = port1->opaque;
626 UHCIPort *port = &s->ports[port1->index];
628 /* set connect status */
629 port->ctrl |= UHCI_PORT_CCS | UHCI_PORT_CSC;
632 if (port->port.dev->speed == USB_SPEED_LOW) {
633 port->ctrl |= UHCI_PORT_LSDA;
635 port->ctrl &= ~UHCI_PORT_LSDA;
641 static void uhci_detach(USBPort *port1)
643 UHCIState *s = port1->opaque;
644 UHCIPort *port = &s->ports[port1->index];
646 uhci_async_cancel_device(s, port1->dev);
648 /* set connect status */
649 if (port->ctrl & UHCI_PORT_CCS) {
650 port->ctrl &= ~UHCI_PORT_CCS;
651 port->ctrl |= UHCI_PORT_CSC;
654 if (port->ctrl & UHCI_PORT_EN) {
655 port->ctrl &= ~UHCI_PORT_EN;
656 port->ctrl |= UHCI_PORT_ENC;
662 static void uhci_child_detach(USBPort *port1, USBDevice *child)
664 UHCIState *s = port1->opaque;
666 uhci_async_cancel_device(s, child);
669 static void uhci_wakeup(USBPort *port1)
671 UHCIState *s = port1->opaque;
672 UHCIPort *port = &s->ports[port1->index];
674 if (port->ctrl & UHCI_PORT_SUSPEND && !(port->ctrl & UHCI_PORT_RD)) {
675 port->ctrl |= UHCI_PORT_RD;
680 static USBDevice *uhci_find_device(UHCIState *s, uint8_t addr)
685 for (i = 0; i < NB_PORTS; i++) {
686 UHCIPort *port = &s->ports[i];
687 if (!(port->ctrl & UHCI_PORT_EN)) {
690 dev = usb_find_device(&port->port, addr);
698 static void uhci_async_complete(USBPort *port, USBPacket *packet);
699 static void uhci_process_frame(UHCIState *s);
701 /* return -1 if fatal error (frame must be stopped)
703 1 if TD unsuccessful or inactive
705 static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_t *int_mask)
707 int len = 0, max_len, err, ret;
710 max_len = ((td->token >> 21) + 1) & 0x7ff;
711 pid = td->token & 0xff;
713 ret = async->packet.result;
715 if (td->ctrl & TD_CTRL_IOS)
716 td->ctrl &= ~TD_CTRL_ACTIVE;
721 len = async->packet.result;
722 td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff);
724 /* The NAK bit may have been set by a previous frame, so clear it
725 here. The docs are somewhat unclear, but win2k relies on this
727 td->ctrl &= ~(TD_CTRL_ACTIVE | TD_CTRL_NAK);
728 if (td->ctrl & TD_CTRL_IOC)
731 if (pid == USB_TOKEN_IN) {
733 ret = USB_RET_BABBLE;
737 if ((td->ctrl & TD_CTRL_SPD) && len < max_len) {
739 /* short packet: do not update QH */
740 trace_usb_uhci_packet_complete_shortxfer(async->queue->token,
742 return TD_RESULT_NEXT_QH;
747 trace_usb_uhci_packet_complete_success(async->queue->token, async->td);
748 return TD_RESULT_COMPLETE;
752 * We should not do any further processing on a queue with errors!
753 * This is esp. important for bulk endpoints with pipelining enabled
754 * (redirection to a real USB device), where we must cancel all the
755 * transfers after this one so that:
756 * 1) If they've completed already, they are not processed further
757 * causing more stalls, originating from the same failed transfer
758 * 2) If still in flight, they are cancelled before the guest does
759 * a clear stall, otherwise the guest and device can loose sync!
761 while (!QTAILQ_EMPTY(&async->queue->asyncs)) {
762 UHCIAsync *as = QTAILQ_FIRST(&async->queue->asyncs);
763 uhci_async_unlink(as);
764 uhci_async_cancel(as);
769 td->ctrl |= TD_CTRL_STALL;
770 td->ctrl &= ~TD_CTRL_ACTIVE;
771 s->status |= UHCI_STS_USBERR;
772 if (td->ctrl & TD_CTRL_IOC) {
776 trace_usb_uhci_packet_complete_stall(async->queue->token, async->td);
777 return TD_RESULT_NEXT_QH;
780 td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
781 td->ctrl &= ~TD_CTRL_ACTIVE;
782 s->status |= UHCI_STS_USBERR;
783 if (td->ctrl & TD_CTRL_IOC) {
787 /* frame interrupted */
788 trace_usb_uhci_packet_complete_babble(async->queue->token, async->td);
789 return TD_RESULT_STOP_FRAME;
792 td->ctrl |= TD_CTRL_NAK;
793 if (pid == USB_TOKEN_SETUP)
795 return TD_RESULT_NEXT_QH;
797 case USB_RET_IOERROR:
803 /* Retry the TD if error count is not zero */
805 td->ctrl |= TD_CTRL_TIMEOUT;
806 err = (td->ctrl >> TD_CTRL_ERROR_SHIFT) & 3;
810 td->ctrl &= ~TD_CTRL_ACTIVE;
811 s->status |= UHCI_STS_USBERR;
812 if (td->ctrl & TD_CTRL_IOC)
815 trace_usb_uhci_packet_complete_error(async->queue->token,
819 td->ctrl = (td->ctrl & ~(3 << TD_CTRL_ERROR_SHIFT)) |
820 (err << TD_CTRL_ERROR_SHIFT);
821 return TD_RESULT_NEXT_QH;
824 static int uhci_handle_td(UHCIState *s, uint32_t addr, UHCI_TD *td,
825 uint32_t *int_mask, bool queuing)
828 int len = 0, max_len;
834 if (!(td->ctrl & TD_CTRL_ACTIVE))
835 return TD_RESULT_NEXT_QH;
837 async = uhci_async_find_td(s, addr, td);
839 /* Already submitted */
840 async->queue->valid = 32;
843 return TD_RESULT_ASYNC_CONT;
845 /* we are busy filling the queue, we are not prepared
846 to consume completed packages then, just leave them
848 return TD_RESULT_ASYNC_CONT;
851 uhci_async_unlink(async);
855 /* Allocate new packet */
856 async = uhci_async_alloc(uhci_queue_get(s, td), addr);
858 /* valid needs to be large enough to handle 10 frame delay
859 * for initial isochronous requests
861 async->queue->valid = 32;
862 async->isoc = td->ctrl & TD_CTRL_IOS;
864 max_len = ((td->token >> 21) + 1) & 0x7ff;
865 pid = td->token & 0xff;
867 dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
868 ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
869 usb_packet_setup(&async->packet, pid, ep);
870 qemu_sglist_add(&async->sgl, td->buffer, max_len);
871 usb_packet_map(&async->packet, &async->sgl);
875 case USB_TOKEN_SETUP:
876 len = usb_handle_packet(dev, &async->packet);
882 len = usb_handle_packet(dev, &async->packet);
886 /* invalid pid : frame interrupted */
887 uhci_async_free(async);
888 s->status |= UHCI_STS_HCPERR;
890 return TD_RESULT_STOP_FRAME;
893 if (len == USB_RET_ASYNC) {
894 uhci_async_link(async);
895 return TD_RESULT_ASYNC_START;
898 async->packet.result = len;
901 len = uhci_complete_td(s, td, async, int_mask);
902 usb_packet_unmap(&async->packet, &async->sgl);
903 uhci_async_free(async);
907 static void uhci_async_complete(USBPort *port, USBPacket *packet)
909 UHCIAsync *async = container_of(packet, UHCIAsync, packet);
910 UHCIState *s = async->queue->uhci;
914 uint32_t link = async->td;
915 uint32_t int_mask = 0, val;
917 pci_dma_read(&s->dev, link & ~0xf, &td, sizeof(td));
918 le32_to_cpus(&td.link);
919 le32_to_cpus(&td.ctrl);
920 le32_to_cpus(&td.token);
921 le32_to_cpus(&td.buffer);
923 uhci_async_unlink(async);
924 uhci_complete_td(s, &td, async, &int_mask);
925 s->pending_int_mask |= int_mask;
927 /* update the status bits of the TD */
928 val = cpu_to_le32(td.ctrl);
929 pci_dma_write(&s->dev, (link & ~0xf) + 4, &val, sizeof(val));
930 uhci_async_free(async);
933 if (s->frame_bytes < s->frame_bandwidth) {
934 qemu_bh_schedule(s->bh);
939 static int is_valid(uint32_t link)
941 return (link & 1) == 0;
944 static int is_qh(uint32_t link)
946 return (link & 2) != 0;
949 static int depth_first(uint32_t link)
951 return (link & 4) != 0;
954 /* QH DB used for detecting QH loops */
955 #define UHCI_MAX_QUEUES 128
957 uint32_t addr[UHCI_MAX_QUEUES];
961 static void qhdb_reset(QhDb *db)
966 /* Add QH to DB. Returns 1 if already present or DB is full. */
967 static int qhdb_insert(QhDb *db, uint32_t addr)
970 for (i = 0; i < db->count; i++)
971 if (db->addr[i] == addr)
974 if (db->count >= UHCI_MAX_QUEUES)
977 db->addr[db->count++] = addr;
981 static void uhci_fill_queue(UHCIState *s, UHCI_TD *td)
983 uint32_t int_mask = 0;
984 uint32_t plink = td->link;
985 uint32_t token = uhci_queue_token(td);
989 while (is_valid(plink)) {
990 pci_dma_read(&s->dev, plink & ~0xf, &ptd, sizeof(ptd));
991 le32_to_cpus(&ptd.link);
992 le32_to_cpus(&ptd.ctrl);
993 le32_to_cpus(&ptd.token);
994 le32_to_cpus(&ptd.buffer);
995 if (!(ptd.ctrl & TD_CTRL_ACTIVE)) {
998 if (uhci_queue_token(&ptd) != token) {
1001 trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token);
1002 ret = uhci_handle_td(s, plink, &ptd, &int_mask, true);
1003 if (ret == TD_RESULT_ASYNC_CONT) {
1006 assert(ret == TD_RESULT_ASYNC_START);
1007 assert(int_mask == 0);
1012 static void uhci_process_frame(UHCIState *s)
1014 uint32_t frame_addr, link, old_td_ctrl, val, int_mask;
1015 uint32_t curr_qh, td_count = 0;
1021 frame_addr = s->fl_base_addr + ((s->frnum & 0x3ff) << 2);
1023 pci_dma_read(&s->dev, frame_addr, &link, 4);
1024 le32_to_cpus(&link);
1031 for (cnt = FRAME_MAX_LOOPS; is_valid(link) && cnt; cnt--) {
1032 if (s->frame_bytes >= s->frame_bandwidth) {
1033 /* We've reached the usb 1.1 bandwidth, which is
1034 1280 bytes/frame, stop processing */
1035 trace_usb_uhci_frame_stop_bandwidth();
1040 trace_usb_uhci_qh_load(link & ~0xf);
1042 if (qhdb_insert(&qhdb, link)) {
1044 * We're going in circles. Which is not a bug because
1045 * HCD is allowed to do that as part of the BW management.
1047 * Stop processing here if no transaction has been done
1048 * since we've been here last time.
1050 if (td_count == 0) {
1051 trace_usb_uhci_frame_loop_stop_idle();
1054 trace_usb_uhci_frame_loop_continue();
1057 qhdb_insert(&qhdb, link);
1061 pci_dma_read(&s->dev, link & ~0xf, &qh, sizeof(qh));
1062 le32_to_cpus(&qh.link);
1063 le32_to_cpus(&qh.el_link);
1065 if (!is_valid(qh.el_link)) {
1066 /* QH w/o elements */
1070 /* QH with elements */
1078 pci_dma_read(&s->dev, link & ~0xf, &td, sizeof(td));
1079 le32_to_cpus(&td.link);
1080 le32_to_cpus(&td.ctrl);
1081 le32_to_cpus(&td.token);
1082 le32_to_cpus(&td.buffer);
1083 trace_usb_uhci_td_load(curr_qh & ~0xf, link & ~0xf, td.ctrl, td.token);
1085 old_td_ctrl = td.ctrl;
1086 ret = uhci_handle_td(s, link, &td, &int_mask, false);
1087 if (old_td_ctrl != td.ctrl) {
1088 /* update the status bits of the TD */
1089 val = cpu_to_le32(td.ctrl);
1090 pci_dma_write(&s->dev, (link & ~0xf) + 4, &val, sizeof(val));
1094 case TD_RESULT_STOP_FRAME: /* interrupted frame */
1097 case TD_RESULT_NEXT_QH:
1098 case TD_RESULT_ASYNC_CONT:
1099 trace_usb_uhci_td_nextqh(curr_qh & ~0xf, link & ~0xf);
1100 link = curr_qh ? qh.link : td.link;
1103 case TD_RESULT_ASYNC_START:
1104 trace_usb_uhci_td_async(curr_qh & ~0xf, link & ~0xf);
1105 if (is_valid(td.link)) {
1106 uhci_fill_queue(s, &td);
1108 link = curr_qh ? qh.link : td.link;
1111 case TD_RESULT_COMPLETE:
1112 trace_usb_uhci_td_complete(curr_qh & ~0xf, link & ~0xf);
1115 s->frame_bytes += (td.ctrl & 0x7ff) + 1;
1118 /* update QH element link */
1120 val = cpu_to_le32(qh.el_link);
1121 pci_dma_write(&s->dev, (curr_qh & ~0xf) + 4, &val, sizeof(val));
1123 if (!depth_first(link)) {
1124 /* done with this QH */
1132 assert(!"unknown return code");
1135 /* go to the next entry */
1139 s->pending_int_mask |= int_mask;
1142 static void uhci_bh(void *opaque)
1144 UHCIState *s = opaque;
1145 uhci_process_frame(s);
1148 static void uhci_frame_timer(void *opaque)
1150 UHCIState *s = opaque;
1152 /* prepare the timer for the next frame */
1153 s->expire_time += (get_ticks_per_sec() / FRAME_TIMER_FREQ);
1155 qemu_bh_cancel(s->bh);
1157 if (!(s->cmd & UHCI_CMD_RS)) {
1159 trace_usb_uhci_schedule_stop();
1160 qemu_del_timer(s->frame_timer);
1161 uhci_async_cancel_all(s);
1162 /* set hchalted bit in status - UHCI11D 2.1.2 */
1163 s->status |= UHCI_STS_HCHALTED;
1167 /* Complete the previous frame */
1168 if (s->pending_int_mask) {
1169 s->status2 |= s->pending_int_mask;
1170 s->status |= UHCI_STS_USBINT;
1173 s->pending_int_mask = 0;
1175 /* Start new frame */
1176 s->frnum = (s->frnum + 1) & 0x7ff;
1178 trace_usb_uhci_frame_start(s->frnum);
1180 uhci_async_validate_begin(s);
1182 uhci_process_frame(s);
1184 uhci_async_validate_end(s);
1186 qemu_mod_timer(s->frame_timer, s->expire_time);
1189 static const MemoryRegionPortio uhci_portio[] = {
1190 { 0, 32, 2, .write = uhci_ioport_writew, },
1191 { 0, 32, 2, .read = uhci_ioport_readw, },
1192 { 0, 32, 4, .write = uhci_ioport_writel, },
1193 { 0, 32, 4, .read = uhci_ioport_readl, },
1194 { 0, 32, 1, .write = uhci_ioport_writeb, },
1195 { 0, 32, 1, .read = uhci_ioport_readb, },
1196 PORTIO_END_OF_LIST()
1199 static const MemoryRegionOps uhci_ioport_ops = {
1200 .old_portio = uhci_portio,
1203 static USBPortOps uhci_port_ops = {
1204 .attach = uhci_attach,
1205 .detach = uhci_detach,
1206 .child_detach = uhci_child_detach,
1207 .wakeup = uhci_wakeup,
1208 .complete = uhci_async_complete,
1211 static USBBusOps uhci_bus_ops = {
1214 static int usb_uhci_common_initfn(PCIDevice *dev)
1216 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
1217 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1218 uint8_t *pci_conf = s->dev.config;
1221 pci_conf[PCI_CLASS_PROG] = 0x00;
1222 /* TODO: reset value should be 0. */
1223 pci_conf[USB_SBRN] = USB_RELEASE_1; // release number
1225 switch (pc->device_id) {
1226 case PCI_DEVICE_ID_INTEL_82801I_UHCI1:
1227 s->irq_pin = 0; /* A */
1229 case PCI_DEVICE_ID_INTEL_82801I_UHCI2:
1230 s->irq_pin = 1; /* B */
1232 case PCI_DEVICE_ID_INTEL_82801I_UHCI3:
1233 s->irq_pin = 2; /* C */
1236 s->irq_pin = 3; /* D */
1239 pci_config_set_interrupt_pin(pci_conf, s->irq_pin + 1);
1242 USBPort *ports[NB_PORTS];
1243 for(i = 0; i < NB_PORTS; i++) {
1244 ports[i] = &s->ports[i].port;
1246 if (usb_register_companion(s->masterbus, ports, NB_PORTS,
1247 s->firstport, s, &uhci_port_ops,
1248 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL) != 0) {
1252 usb_bus_new(&s->bus, &uhci_bus_ops, &s->dev.qdev);
1253 for (i = 0; i < NB_PORTS; i++) {
1254 usb_register_port(&s->bus, &s->ports[i].port, s, i, &uhci_port_ops,
1255 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
1258 s->bh = qemu_bh_new(uhci_bh, s);
1259 s->frame_timer = qemu_new_timer_ns(vm_clock, uhci_frame_timer, s);
1260 s->num_ports_vmstate = NB_PORTS;
1261 QTAILQ_INIT(&s->queues);
1263 qemu_register_reset(uhci_reset, s);
1265 memory_region_init_io(&s->io_bar, &uhci_ioport_ops, s, "uhci", 0x20);
1266 /* Use region 4 for consistency with real hardware. BSD guests seem
1268 pci_register_bar(&s->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar);
1273 static int usb_uhci_vt82c686b_initfn(PCIDevice *dev)
1275 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1276 uint8_t *pci_conf = s->dev.config;
1278 /* USB misc control 1/2 */
1279 pci_set_long(pci_conf + 0x40,0x00001000);
1281 pci_set_long(pci_conf + 0x80,0x00020001);
1282 /* USB legacy support */
1283 pci_set_long(pci_conf + 0xc0,0x00002000);
1285 return usb_uhci_common_initfn(dev);
1288 static void usb_uhci_exit(PCIDevice *dev)
1290 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1292 memory_region_destroy(&s->io_bar);
1295 static Property uhci_properties[] = {
1296 DEFINE_PROP_STRING("masterbus", UHCIState, masterbus),
1297 DEFINE_PROP_UINT32("firstport", UHCIState, firstport, 0),
1298 DEFINE_PROP_UINT32("bandwidth", UHCIState, frame_bandwidth, 1280),
1299 DEFINE_PROP_END_OF_LIST(),
1302 static void piix3_uhci_class_init(ObjectClass *klass, void *data)
1304 DeviceClass *dc = DEVICE_CLASS(klass);
1305 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1307 k->init = usb_uhci_common_initfn;
1308 k->exit = usb_uhci_exit;
1309 k->vendor_id = PCI_VENDOR_ID_INTEL;
1310 k->device_id = PCI_DEVICE_ID_INTEL_82371SB_2;
1312 k->class_id = PCI_CLASS_SERIAL_USB;
1313 dc->vmsd = &vmstate_uhci;
1314 dc->props = uhci_properties;
1317 static TypeInfo piix3_uhci_info = {
1318 .name = "piix3-usb-uhci",
1319 .parent = TYPE_PCI_DEVICE,
1320 .instance_size = sizeof(UHCIState),
1321 .class_init = piix3_uhci_class_init,
1324 static void piix4_uhci_class_init(ObjectClass *klass, void *data)
1326 DeviceClass *dc = DEVICE_CLASS(klass);
1327 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1329 k->init = usb_uhci_common_initfn;
1330 k->exit = usb_uhci_exit;
1331 k->vendor_id = PCI_VENDOR_ID_INTEL;
1332 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_2;
1334 k->class_id = PCI_CLASS_SERIAL_USB;
1335 dc->vmsd = &vmstate_uhci;
1336 dc->props = uhci_properties;
1339 static TypeInfo piix4_uhci_info = {
1340 .name = "piix4-usb-uhci",
1341 .parent = TYPE_PCI_DEVICE,
1342 .instance_size = sizeof(UHCIState),
1343 .class_init = piix4_uhci_class_init,
1346 static void vt82c686b_uhci_class_init(ObjectClass *klass, void *data)
1348 DeviceClass *dc = DEVICE_CLASS(klass);
1349 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1351 k->init = usb_uhci_vt82c686b_initfn;
1352 k->exit = usb_uhci_exit;
1353 k->vendor_id = PCI_VENDOR_ID_VIA;
1354 k->device_id = PCI_DEVICE_ID_VIA_UHCI;
1356 k->class_id = PCI_CLASS_SERIAL_USB;
1357 dc->vmsd = &vmstate_uhci;
1358 dc->props = uhci_properties;
1361 static TypeInfo vt82c686b_uhci_info = {
1362 .name = "vt82c686b-usb-uhci",
1363 .parent = TYPE_PCI_DEVICE,
1364 .instance_size = sizeof(UHCIState),
1365 .class_init = vt82c686b_uhci_class_init,
1368 static void ich9_uhci1_class_init(ObjectClass *klass, void *data)
1370 DeviceClass *dc = DEVICE_CLASS(klass);
1371 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1373 k->init = usb_uhci_common_initfn;
1374 k->vendor_id = PCI_VENDOR_ID_INTEL;
1375 k->device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI1;
1377 k->class_id = PCI_CLASS_SERIAL_USB;
1378 dc->vmsd = &vmstate_uhci;
1379 dc->props = uhci_properties;
1382 static TypeInfo ich9_uhci1_info = {
1383 .name = "ich9-usb-uhci1",
1384 .parent = TYPE_PCI_DEVICE,
1385 .instance_size = sizeof(UHCIState),
1386 .class_init = ich9_uhci1_class_init,
1389 static void ich9_uhci2_class_init(ObjectClass *klass, void *data)
1391 DeviceClass *dc = DEVICE_CLASS(klass);
1392 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1394 k->init = usb_uhci_common_initfn;
1395 k->vendor_id = PCI_VENDOR_ID_INTEL;
1396 k->device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI2;
1398 k->class_id = PCI_CLASS_SERIAL_USB;
1399 dc->vmsd = &vmstate_uhci;
1400 dc->props = uhci_properties;
1403 static TypeInfo ich9_uhci2_info = {
1404 .name = "ich9-usb-uhci2",
1405 .parent = TYPE_PCI_DEVICE,
1406 .instance_size = sizeof(UHCIState),
1407 .class_init = ich9_uhci2_class_init,
1410 static void ich9_uhci3_class_init(ObjectClass *klass, void *data)
1412 DeviceClass *dc = DEVICE_CLASS(klass);
1413 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1415 k->init = usb_uhci_common_initfn;
1416 k->vendor_id = PCI_VENDOR_ID_INTEL;
1417 k->device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI3;
1419 k->class_id = PCI_CLASS_SERIAL_USB;
1420 dc->vmsd = &vmstate_uhci;
1421 dc->props = uhci_properties;
1424 static TypeInfo ich9_uhci3_info = {
1425 .name = "ich9-usb-uhci3",
1426 .parent = TYPE_PCI_DEVICE,
1427 .instance_size = sizeof(UHCIState),
1428 .class_init = ich9_uhci3_class_init,
1431 static void uhci_register_types(void)
1433 type_register_static(&piix3_uhci_info);
1434 type_register_static(&piix4_uhci_info);
1435 type_register_static(&vt82c686b_uhci_info);
1436 type_register_static(&ich9_uhci1_info);
1437 type_register_static(&ich9_uhci2_info);
1438 type_register_static(&ich9_uhci3_info);
1441 type_init(uhci_register_types)