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"
35 //#define DEBUG_DUMP_DATA
37 #define UHCI_CMD_FGR (1 << 4)
38 #define UHCI_CMD_EGSM (1 << 3)
39 #define UHCI_CMD_GRESET (1 << 2)
40 #define UHCI_CMD_HCRESET (1 << 1)
41 #define UHCI_CMD_RS (1 << 0)
43 #define UHCI_STS_HCHALTED (1 << 5)
44 #define UHCI_STS_HCPERR (1 << 4)
45 #define UHCI_STS_HSERR (1 << 3)
46 #define UHCI_STS_RD (1 << 2)
47 #define UHCI_STS_USBERR (1 << 1)
48 #define UHCI_STS_USBINT (1 << 0)
50 #define TD_CTRL_SPD (1 << 29)
51 #define TD_CTRL_ERROR_SHIFT 27
52 #define TD_CTRL_IOS (1 << 25)
53 #define TD_CTRL_IOC (1 << 24)
54 #define TD_CTRL_ACTIVE (1 << 23)
55 #define TD_CTRL_STALL (1 << 22)
56 #define TD_CTRL_BABBLE (1 << 20)
57 #define TD_CTRL_NAK (1 << 19)
58 #define TD_CTRL_TIMEOUT (1 << 18)
60 #define UHCI_PORT_SUSPEND (1 << 12)
61 #define UHCI_PORT_RESET (1 << 9)
62 #define UHCI_PORT_LSDA (1 << 8)
63 #define UHCI_PORT_RD (1 << 6)
64 #define UHCI_PORT_ENC (1 << 3)
65 #define UHCI_PORT_EN (1 << 2)
66 #define UHCI_PORT_CSC (1 << 1)
67 #define UHCI_PORT_CCS (1 << 0)
69 #define UHCI_PORT_READ_ONLY (0x1bb)
70 #define UHCI_PORT_WRITE_CLEAR (UHCI_PORT_CSC | UHCI_PORT_ENC)
72 #define FRAME_TIMER_FREQ 1000
74 #define FRAME_MAX_LOOPS 100
79 #define DPRINTF printf
81 static const char *pid2str(int pid)
84 case USB_TOKEN_SETUP: return "SETUP";
85 case USB_TOKEN_IN: return "IN";
86 case USB_TOKEN_OUT: return "OUT";
95 #ifdef DEBUG_DUMP_DATA
96 static void dump_data(const uint8_t *data, int len)
100 printf("uhci: data: ");
101 for(i = 0; i < len; i++)
102 printf(" %02x", data[i]);
106 static void dump_data(const uint8_t *data, int len) {}
109 typedef struct UHCIState UHCIState;
112 * Pending async transaction.
113 * 'packet' must be the first field because completion
114 * handler does "(UHCIAsync *) pkt" cast.
116 typedef struct UHCIAsync {
119 QTAILQ_ENTRY(UHCIAsync) next;
125 uint8_t buffer[2048];
128 typedef struct UHCIPort {
136 uint16_t cmd; /* cmd register */
138 uint16_t intr; /* interrupt enable register */
139 uint16_t frnum; /* frame number */
140 uint32_t fl_base_addr; /* frame list base address */
142 uint8_t status2; /* bit 0 and 1 are used to generate UHCI_STS_USBINT */
144 QEMUTimer *frame_timer;
145 UHCIPort ports[NB_PORTS];
147 /* Interrupts that should be raised at the end of the current frame. */
148 uint32_t pending_int_mask;
151 QTAILQ_HEAD(,UHCIAsync) async_pending;
152 uint8_t num_ports_vmstate;
155 typedef struct UHCI_TD {
157 uint32_t ctrl; /* see TD_CTRL_xxx */
162 typedef struct UHCI_QH {
167 static UHCIAsync *uhci_async_alloc(UHCIState *s)
169 UHCIAsync *async = qemu_malloc(sizeof(UHCIAsync));
171 memset(&async->packet, 0, sizeof(async->packet));
182 static void uhci_async_free(UHCIState *s, UHCIAsync *async)
187 static void uhci_async_link(UHCIState *s, UHCIAsync *async)
189 QTAILQ_INSERT_HEAD(&s->async_pending, async, next);
192 static void uhci_async_unlink(UHCIState *s, UHCIAsync *async)
194 QTAILQ_REMOVE(&s->async_pending, async, next);
197 static void uhci_async_cancel(UHCIState *s, UHCIAsync *async)
199 DPRINTF("uhci: cancel td 0x%x token 0x%x done %u\n",
200 async->td, async->token, async->done);
203 usb_cancel_packet(&async->packet);
204 uhci_async_free(s, async);
208 * Mark all outstanding async packets as invalid.
209 * This is used for canceling them when TDs are removed by the HCD.
211 static UHCIAsync *uhci_async_validate_begin(UHCIState *s)
215 QTAILQ_FOREACH(async, &s->async_pending, next) {
222 * Cancel async packets that are no longer valid
224 static void uhci_async_validate_end(UHCIState *s)
228 QTAILQ_FOREACH_SAFE(curr, &s->async_pending, next, n) {
229 if (curr->valid > 0) {
232 uhci_async_unlink(s, curr);
233 uhci_async_cancel(s, curr);
237 static void uhci_async_cancel_all(UHCIState *s)
241 QTAILQ_FOREACH_SAFE(curr, &s->async_pending, next, n) {
242 uhci_async_unlink(s, curr);
243 uhci_async_cancel(s, curr);
247 static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, uint32_t token)
250 UHCIAsync *match = NULL;
254 * We're looking for the best match here. ie both td addr and token.
255 * Otherwise we return last good match. ie just token.
256 * It's ok to match just token because it identifies the transaction
257 * rather well, token includes: device addr, endpoint, size, etc.
259 * Also since we queue async transactions in reverse order by returning
260 * last good match we restores the order.
262 * It's expected that we wont have a ton of outstanding transactions.
263 * If we ever do we'd want to optimize this algorithm.
266 QTAILQ_FOREACH(async, &s->async_pending, next) {
267 if (async->token == token) {
271 if (async->td == addr) {
280 fprintf(stderr, "uhci: warning lots of async transactions\n");
285 static void uhci_update_irq(UHCIState *s)
288 if (((s->status2 & 1) && (s->intr & (1 << 2))) ||
289 ((s->status2 & 2) && (s->intr & (1 << 3))) ||
290 ((s->status & UHCI_STS_USBERR) && (s->intr & (1 << 0))) ||
291 ((s->status & UHCI_STS_RD) && (s->intr & (1 << 1))) ||
292 (s->status & UHCI_STS_HSERR) ||
293 (s->status & UHCI_STS_HCPERR)) {
298 qemu_set_irq(s->dev.irq[3], level);
301 static void uhci_reset(void *opaque)
303 UHCIState *s = opaque;
308 DPRINTF("uhci: full reset\n");
310 pci_conf = s->dev.config;
312 pci_conf[0x6a] = 0x01; /* usb clock */
313 pci_conf[0x6b] = 0x00;
321 for(i = 0; i < NB_PORTS; i++) {
324 if (port->port.dev) {
325 usb_attach(&port->port, port->port.dev);
329 uhci_async_cancel_all(s);
332 static void uhci_pre_save(void *opaque)
334 UHCIState *s = opaque;
336 uhci_async_cancel_all(s);
339 static const VMStateDescription vmstate_uhci_port = {
342 .minimum_version_id = 1,
343 .minimum_version_id_old = 1,
344 .fields = (VMStateField []) {
345 VMSTATE_UINT16(ctrl, UHCIPort),
346 VMSTATE_END_OF_LIST()
350 static const VMStateDescription vmstate_uhci = {
353 .minimum_version_id = 1,
354 .minimum_version_id_old = 1,
355 .pre_save = uhci_pre_save,
356 .fields = (VMStateField []) {
357 VMSTATE_PCI_DEVICE(dev, UHCIState),
358 VMSTATE_UINT8_EQUAL(num_ports_vmstate, UHCIState),
359 VMSTATE_STRUCT_ARRAY(ports, UHCIState, NB_PORTS, 1,
360 vmstate_uhci_port, UHCIPort),
361 VMSTATE_UINT16(cmd, UHCIState),
362 VMSTATE_UINT16(status, UHCIState),
363 VMSTATE_UINT16(intr, UHCIState),
364 VMSTATE_UINT16(frnum, UHCIState),
365 VMSTATE_UINT32(fl_base_addr, UHCIState),
366 VMSTATE_UINT8(sof_timing, UHCIState),
367 VMSTATE_UINT8(status2, UHCIState),
368 VMSTATE_TIMER(frame_timer, UHCIState),
369 VMSTATE_INT64_V(expire_time, UHCIState, 2),
370 VMSTATE_END_OF_LIST()
374 static void uhci_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
376 UHCIState *s = opaque;
386 static uint32_t uhci_ioport_readb(void *opaque, uint32_t addr)
388 UHCIState *s = opaque;
403 static void uhci_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
405 UHCIState *s = opaque;
408 DPRINTF("uhci: writew port=0x%04x val=0x%04x\n", addr, val);
412 if ((val & UHCI_CMD_RS) && !(s->cmd & UHCI_CMD_RS)) {
413 /* start frame processing */
414 qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock));
415 s->status &= ~UHCI_STS_HCHALTED;
416 } else if (!(val & UHCI_CMD_RS)) {
417 s->status |= UHCI_STS_HCHALTED;
419 if (val & UHCI_CMD_GRESET) {
424 /* send reset on the USB bus */
425 for(i = 0; i < NB_PORTS; i++) {
427 dev = port->port.dev;
429 usb_send_msg(dev, USB_MSG_RESET);
435 if (val & UHCI_CMD_HCRESET) {
443 /* XXX: the chip spec is not coherent, so we add a hidden
444 register to distinguish between IOC and SPD */
445 if (val & UHCI_STS_USBINT)
454 if (s->status & UHCI_STS_HCHALTED)
455 s->frnum = val & 0x7ff;
467 dev = port->port.dev;
470 if ( (val & UHCI_PORT_RESET) &&
471 !(port->ctrl & UHCI_PORT_RESET) ) {
472 usb_send_msg(dev, USB_MSG_RESET);
475 port->ctrl &= UHCI_PORT_READ_ONLY;
476 port->ctrl |= (val & ~UHCI_PORT_READ_ONLY);
477 /* some bits are reset when a '1' is written to them */
478 port->ctrl &= ~(val & UHCI_PORT_WRITE_CLEAR);
484 static uint32_t uhci_ioport_readw(void *opaque, uint32_t addr)
486 UHCIState *s = opaque;
516 val = 0xff7f; /* disabled port */
520 DPRINTF("uhci: readw port=0x%04x val=0x%04x\n", addr, val);
525 static void uhci_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
527 UHCIState *s = opaque;
530 DPRINTF("uhci: writel port=0x%04x val=0x%08x\n", addr, val);
534 s->fl_base_addr = val & ~0xfff;
539 static uint32_t uhci_ioport_readl(void *opaque, uint32_t addr)
541 UHCIState *s = opaque;
547 val = s->fl_base_addr;
556 /* signal resume if controller suspended */
557 static void uhci_resume (void *opaque)
559 UHCIState *s = (UHCIState *)opaque;
564 if (s->cmd & UHCI_CMD_EGSM) {
565 s->cmd |= UHCI_CMD_FGR;
566 s->status |= UHCI_STS_RD;
571 static void uhci_attach(USBPort *port1)
573 UHCIState *s = port1->opaque;
574 UHCIPort *port = &s->ports[port1->index];
576 /* set connect status */
577 port->ctrl |= UHCI_PORT_CCS | UHCI_PORT_CSC;
580 if (port->port.dev->speed == USB_SPEED_LOW) {
581 port->ctrl |= UHCI_PORT_LSDA;
583 port->ctrl &= ~UHCI_PORT_LSDA;
589 static void uhci_detach(USBPort *port1)
591 UHCIState *s = port1->opaque;
592 UHCIPort *port = &s->ports[port1->index];
594 /* set connect status */
595 if (port->ctrl & UHCI_PORT_CCS) {
596 port->ctrl &= ~UHCI_PORT_CCS;
597 port->ctrl |= UHCI_PORT_CSC;
600 if (port->ctrl & UHCI_PORT_EN) {
601 port->ctrl &= ~UHCI_PORT_EN;
602 port->ctrl |= UHCI_PORT_ENC;
608 static void uhci_wakeup(USBDevice *dev)
610 USBBus *bus = usb_bus_from_device(dev);
611 UHCIState *s = container_of(bus, UHCIState, bus);
612 UHCIPort *port = s->ports + dev->port->index;
614 if (port->ctrl & UHCI_PORT_SUSPEND && !(port->ctrl & UHCI_PORT_RD)) {
615 port->ctrl |= UHCI_PORT_RD;
620 static int uhci_broadcast_packet(UHCIState *s, USBPacket *p)
624 DPRINTF("uhci: packet enter. pid %s addr 0x%02x ep %d len %d\n",
625 pid2str(p->pid), p->devaddr, p->devep, p->len);
626 if (p->pid == USB_TOKEN_OUT || p->pid == USB_TOKEN_SETUP)
627 dump_data(p->data, p->len);
630 for (i = 0; i < NB_PORTS && ret == USB_RET_NODEV; i++) {
631 UHCIPort *port = &s->ports[i];
632 USBDevice *dev = port->port.dev;
634 if (dev && (port->ctrl & UHCI_PORT_EN))
635 ret = usb_handle_packet(dev, p);
638 DPRINTF("uhci: packet exit. ret %d len %d\n", ret, p->len);
639 if (p->pid == USB_TOKEN_IN && ret > 0)
640 dump_data(p->data, ret);
645 static void uhci_async_complete(USBDevice *dev, USBPacket *packet);
646 static void uhci_process_frame(UHCIState *s);
648 /* return -1 if fatal error (frame must be stopped)
650 1 if TD unsuccessful or inactive
652 static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_t *int_mask)
654 int len = 0, max_len, err, ret;
657 max_len = ((td->token >> 21) + 1) & 0x7ff;
658 pid = td->token & 0xff;
660 ret = async->packet.len;
662 if (td->ctrl & TD_CTRL_IOS)
663 td->ctrl &= ~TD_CTRL_ACTIVE;
668 len = async->packet.len;
669 td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff);
671 /* The NAK bit may have been set by a previous frame, so clear it
672 here. The docs are somewhat unclear, but win2k relies on this
674 td->ctrl &= ~(TD_CTRL_ACTIVE | TD_CTRL_NAK);
675 if (td->ctrl & TD_CTRL_IOC)
678 if (pid == USB_TOKEN_IN) {
680 ret = USB_RET_BABBLE;
685 /* write the data back */
686 cpu_physical_memory_write(td->buffer, async->buffer, len);
689 if ((td->ctrl & TD_CTRL_SPD) && len < max_len) {
691 /* short packet: do not update QH */
692 DPRINTF("uhci: short packet. td 0x%x token 0x%x\n", async->td, async->token);
703 td->ctrl |= TD_CTRL_STALL;
704 td->ctrl &= ~TD_CTRL_ACTIVE;
705 s->status |= UHCI_STS_USBERR;
710 td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
711 td->ctrl &= ~TD_CTRL_ACTIVE;
712 s->status |= UHCI_STS_USBERR;
714 /* frame interrupted */
718 td->ctrl |= TD_CTRL_NAK;
719 if (pid == USB_TOKEN_SETUP)
728 /* Retry the TD if error count is not zero */
730 td->ctrl |= TD_CTRL_TIMEOUT;
731 err = (td->ctrl >> TD_CTRL_ERROR_SHIFT) & 3;
735 td->ctrl &= ~TD_CTRL_ACTIVE;
736 s->status |= UHCI_STS_USBERR;
737 if (td->ctrl & TD_CTRL_IOC)
742 td->ctrl = (td->ctrl & ~(3 << TD_CTRL_ERROR_SHIFT)) |
743 (err << TD_CTRL_ERROR_SHIFT);
747 static int uhci_handle_td(UHCIState *s, uint32_t addr, UHCI_TD *td, uint32_t *int_mask)
750 int len = 0, max_len;
755 if (!(td->ctrl & TD_CTRL_ACTIVE))
758 /* token field is not unique for isochronous requests,
759 * so use the destination buffer
761 if (td->ctrl & TD_CTRL_IOS) {
769 async = uhci_async_find_td(s, addr, token);
771 /* Already submitted */
777 uhci_async_unlink(s, async);
781 /* Allocate new packet */
782 async = uhci_async_alloc(s);
786 /* valid needs to be large enough to handle 10 frame delay
787 * for initial isochronous requests
791 async->token = token;
794 max_len = ((td->token >> 21) + 1) & 0x7ff;
795 pid = td->token & 0xff;
797 async->packet.pid = pid;
798 async->packet.devaddr = (td->token >> 8) & 0x7f;
799 async->packet.devep = (td->token >> 15) & 0xf;
800 async->packet.data = async->buffer;
801 async->packet.len = max_len;
805 case USB_TOKEN_SETUP:
806 cpu_physical_memory_read(td->buffer, async->buffer, max_len);
807 len = uhci_broadcast_packet(s, &async->packet);
813 len = uhci_broadcast_packet(s, &async->packet);
817 /* invalid pid : frame interrupted */
818 uhci_async_free(s, async);
819 s->status |= UHCI_STS_HCPERR;
824 if (len == USB_RET_ASYNC) {
825 uhci_async_link(s, async);
829 async->packet.len = len;
832 len = uhci_complete_td(s, td, async, int_mask);
833 uhci_async_free(s, async);
837 static void uhci_async_complete(USBDevice *dev, USBPacket *packet)
839 UHCIAsync *async = container_of(packet, UHCIAsync, packet);
840 UHCIState *s = async->uhci;
842 DPRINTF("uhci: async complete. td 0x%x token 0x%x\n", async->td, async->token);
846 uint32_t link = async->td;
847 uint32_t int_mask = 0, val;
849 cpu_physical_memory_read(link & ~0xf, (uint8_t *) &td, sizeof(td));
850 le32_to_cpus(&td.link);
851 le32_to_cpus(&td.ctrl);
852 le32_to_cpus(&td.token);
853 le32_to_cpus(&td.buffer);
855 uhci_async_unlink(s, async);
856 uhci_complete_td(s, &td, async, &int_mask);
857 s->pending_int_mask |= int_mask;
859 /* update the status bits of the TD */
860 val = cpu_to_le32(td.ctrl);
861 cpu_physical_memory_write((link & ~0xf) + 4,
862 (const uint8_t *)&val, sizeof(val));
863 uhci_async_free(s, async);
866 uhci_process_frame(s);
870 static int is_valid(uint32_t link)
872 return (link & 1) == 0;
875 static int is_qh(uint32_t link)
877 return (link & 2) != 0;
880 static int depth_first(uint32_t link)
882 return (link & 4) != 0;
885 /* QH DB used for detecting QH loops */
886 #define UHCI_MAX_QUEUES 128
888 uint32_t addr[UHCI_MAX_QUEUES];
892 static void qhdb_reset(QhDb *db)
897 /* Add QH to DB. Returns 1 if already present or DB is full. */
898 static int qhdb_insert(QhDb *db, uint32_t addr)
901 for (i = 0; i < db->count; i++)
902 if (db->addr[i] == addr)
905 if (db->count >= UHCI_MAX_QUEUES)
908 db->addr[db->count++] = addr;
912 static void uhci_process_frame(UHCIState *s)
914 uint32_t frame_addr, link, old_td_ctrl, val, int_mask;
921 frame_addr = s->fl_base_addr + ((s->frnum & 0x3ff) << 2);
923 DPRINTF("uhci: processing frame %d addr 0x%x\n" , s->frnum, frame_addr);
925 cpu_physical_memory_read(frame_addr, (uint8_t *)&link, 4);
933 for (cnt = FRAME_MAX_LOOPS; is_valid(link) && cnt; cnt--) {
937 if (qhdb_insert(&qhdb, link)) {
939 * We're going in circles. Which is not a bug because
940 * HCD is allowed to do that as part of the BW management.
941 * In our case though it makes no sense to spin here. Sync transations
942 * are already done, and async completion handler will re-process
943 * the frame when something is ready.
945 DPRINTF("uhci: detected loop. qh 0x%x\n", link);
949 cpu_physical_memory_read(link & ~0xf, (uint8_t *) &qh, sizeof(qh));
950 le32_to_cpus(&qh.link);
951 le32_to_cpus(&qh.el_link);
953 DPRINTF("uhci: QH 0x%x load. link 0x%x elink 0x%x\n",
954 link, qh.link, qh.el_link);
956 if (!is_valid(qh.el_link)) {
957 /* QH w/o elements */
961 /* QH with elements */
969 cpu_physical_memory_read(link & ~0xf, (uint8_t *) &td, sizeof(td));
970 le32_to_cpus(&td.link);
971 le32_to_cpus(&td.ctrl);
972 le32_to_cpus(&td.token);
973 le32_to_cpus(&td.buffer);
975 DPRINTF("uhci: TD 0x%x load. link 0x%x ctrl 0x%x token 0x%x qh 0x%x\n",
976 link, td.link, td.ctrl, td.token, curr_qh);
978 old_td_ctrl = td.ctrl;
979 ret = uhci_handle_td(s, link, &td, &int_mask);
980 if (old_td_ctrl != td.ctrl) {
981 /* update the status bits of the TD */
982 val = cpu_to_le32(td.ctrl);
983 cpu_physical_memory_write((link & ~0xf) + 4,
984 (const uint8_t *)&val, sizeof(val));
988 /* interrupted frame */
992 if (ret == 2 || ret == 1) {
993 DPRINTF("uhci: TD 0x%x %s. link 0x%x ctrl 0x%x token 0x%x qh 0x%x\n",
994 link, ret == 2 ? "pend" : "skip",
995 td.link, td.ctrl, td.token, curr_qh);
997 link = curr_qh ? qh.link : td.link;
1003 DPRINTF("uhci: TD 0x%x done. link 0x%x ctrl 0x%x token 0x%x qh 0x%x\n",
1004 link, td.link, td.ctrl, td.token, curr_qh);
1009 /* update QH element link */
1011 val = cpu_to_le32(qh.el_link);
1012 cpu_physical_memory_write((curr_qh & ~0xf) + 4,
1013 (const uint8_t *)&val, sizeof(val));
1015 if (!depth_first(link)) {
1016 /* done with this QH */
1018 DPRINTF("uhci: QH 0x%x done. link 0x%x elink 0x%x\n",
1019 curr_qh, qh.link, qh.el_link);
1026 /* go to the next entry */
1029 s->pending_int_mask |= int_mask;
1032 static void uhci_frame_timer(void *opaque)
1034 UHCIState *s = opaque;
1036 /* prepare the timer for the next frame */
1037 s->expire_time += (get_ticks_per_sec() / FRAME_TIMER_FREQ);
1039 if (!(s->cmd & UHCI_CMD_RS)) {
1041 qemu_del_timer(s->frame_timer);
1042 /* set hchalted bit in status - UHCI11D 2.1.2 */
1043 s->status |= UHCI_STS_HCHALTED;
1045 DPRINTF("uhci: halted\n");
1049 /* Complete the previous frame */
1050 if (s->pending_int_mask) {
1051 s->status2 |= s->pending_int_mask;
1052 s->status |= UHCI_STS_USBINT;
1055 s->pending_int_mask = 0;
1057 /* Start new frame */
1058 s->frnum = (s->frnum + 1) & 0x7ff;
1060 DPRINTF("uhci: new frame #%u\n" , s->frnum);
1062 uhci_async_validate_begin(s);
1064 uhci_process_frame(s);
1066 uhci_async_validate_end(s);
1068 qemu_mod_timer(s->frame_timer, s->expire_time);
1071 static void uhci_map(PCIDevice *pci_dev, int region_num,
1072 pcibus_t addr, pcibus_t size, int type)
1074 UHCIState *s = (UHCIState *)pci_dev;
1076 register_ioport_write(addr, 32, 2, uhci_ioport_writew, s);
1077 register_ioport_read(addr, 32, 2, uhci_ioport_readw, s);
1078 register_ioport_write(addr, 32, 4, uhci_ioport_writel, s);
1079 register_ioport_read(addr, 32, 4, uhci_ioport_readl, s);
1080 register_ioport_write(addr, 32, 1, uhci_ioport_writeb, s);
1081 register_ioport_read(addr, 32, 1, uhci_ioport_readb, s);
1084 static USBPortOps uhci_port_ops = {
1085 .attach = uhci_attach,
1086 .detach = uhci_detach,
1087 .wakeup = uhci_wakeup,
1088 .complete = uhci_async_complete,
1091 static int usb_uhci_common_initfn(UHCIState *s)
1093 uint8_t *pci_conf = s->dev.config;
1096 pci_conf[PCI_REVISION_ID] = 0x01; // revision number
1097 pci_conf[PCI_CLASS_PROG] = 0x00;
1098 pci_config_set_class(pci_conf, PCI_CLASS_SERIAL_USB);
1099 /* TODO: reset value should be 0. */
1100 pci_conf[PCI_INTERRUPT_PIN] = 4; // interrupt pin 3
1101 pci_conf[0x60] = 0x10; // release number
1103 usb_bus_new(&s->bus, &s->dev.qdev);
1104 for(i = 0; i < NB_PORTS; i++) {
1105 usb_register_port(&s->bus, &s->ports[i].port, s, i, &uhci_port_ops,
1106 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
1107 usb_port_location(&s->ports[i].port, NULL, i+1);
1109 s->frame_timer = qemu_new_timer_ns(vm_clock, uhci_frame_timer, s);
1110 s->expire_time = qemu_get_clock_ns(vm_clock) +
1111 (get_ticks_per_sec() / FRAME_TIMER_FREQ);
1112 s->num_ports_vmstate = NB_PORTS;
1113 QTAILQ_INIT(&s->async_pending);
1115 qemu_register_reset(uhci_reset, s);
1117 /* Use region 4 for consistency with real hardware. BSD guests seem
1119 pci_register_bar(&s->dev, 4, 0x20,
1120 PCI_BASE_ADDRESS_SPACE_IO, uhci_map);
1125 static int usb_uhci_piix3_initfn(PCIDevice *dev)
1127 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1128 uint8_t *pci_conf = s->dev.config;
1130 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
1131 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371SB_2);
1132 return usb_uhci_common_initfn(s);
1135 static int usb_uhci_piix4_initfn(PCIDevice *dev)
1137 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1138 uint8_t *pci_conf = s->dev.config;
1140 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
1141 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_2);
1142 return usb_uhci_common_initfn(s);
1145 static int usb_uhci_vt82c686b_initfn(PCIDevice *dev)
1147 UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
1148 uint8_t *pci_conf = s->dev.config;
1150 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_VIA);
1151 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_VIA_UHCI);
1153 /* USB misc control 1/2 */
1154 pci_set_long(pci_conf + 0x40,0x00001000);
1156 pci_set_long(pci_conf + 0x80,0x00020001);
1157 /* USB legacy support */
1158 pci_set_long(pci_conf + 0xc0,0x00002000);
1160 return usb_uhci_common_initfn(s);
1163 static PCIDeviceInfo uhci_info[] = {
1165 .qdev.name = "piix3-usb-uhci",
1166 .qdev.size = sizeof(UHCIState),
1167 .qdev.vmsd = &vmstate_uhci,
1168 .init = usb_uhci_piix3_initfn,
1170 .qdev.name = "piix4-usb-uhci",
1171 .qdev.size = sizeof(UHCIState),
1172 .qdev.vmsd = &vmstate_uhci,
1173 .init = usb_uhci_piix4_initfn,
1175 .qdev.name = "vt82c686b-usb-uhci",
1176 .qdev.size = sizeof(UHCIState),
1177 .qdev.vmsd = &vmstate_uhci,
1178 .init = usb_uhci_vt82c686b_initfn,
1184 static void uhci_register(void)
1186 pci_qdev_register_many(uhci_info);
1188 device_init(uhci_register);
1190 void usb_uhci_piix3_init(PCIBus *bus, int devfn)
1192 pci_create_simple(bus, devfn, "piix3-usb-uhci");
1195 void usb_uhci_piix4_init(PCIBus *bus, int devfn)
1197 pci_create_simple(bus, devfn, "piix4-usb-uhci");
1200 void usb_uhci_vt82c686b_init(PCIBus *bus, int devfn)
1202 pci_create_simple(bus, devfn, "vt82c686b-usb-uhci");