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virtio-sound: handle VIRTIO_SND_R_PCM_RELEASE
[mirror_qemu.git] / hw / usb / hcd-xhci.c
1 /*
2 * USB xHCI controller emulation
3 *
4 * Copyright (c) 2011 Securiforest
5 * Date: 2011-05-11 ; Author: Hector Martin <hector@marcansoft.com>
6 * Based on usb-ohci.c, emulates Renesas NEC USB 3.0
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "qemu/osdep.h"
23 #include "qemu/timer.h"
24 #include "qemu/log.h"
25 #include "qemu/module.h"
26 #include "qemu/queue.h"
27 #include "migration/vmstate.h"
28 #include "hw/qdev-properties.h"
29 #include "trace.h"
30 #include "qapi/error.h"
31
32 #include "hcd-xhci.h"
33
34 //#define DEBUG_XHCI
35 //#define DEBUG_DATA
36
37 #ifdef DEBUG_XHCI
38 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
39 #else
40 #define DPRINTF(...) do {} while (0)
41 #endif
42 #define FIXME(_msg) do { fprintf(stderr, "FIXME %s:%d %s\n", \
43 __func__, __LINE__, _msg); abort(); } while (0)
44
45 #define TRB_LINK_LIMIT 32
46 #define COMMAND_LIMIT 256
47 #define TRANSFER_LIMIT 256
48
49 #define LEN_CAP 0x40
50 #define LEN_OPER (0x400 + 0x10 * XHCI_MAXPORTS)
51 #define LEN_RUNTIME ((XHCI_MAXINTRS + 1) * 0x20)
52 #define LEN_DOORBELL ((XHCI_MAXSLOTS + 1) * 0x20)
53
54 #define OFF_OPER LEN_CAP
55 #define OFF_RUNTIME 0x1000
56 #define OFF_DOORBELL 0x2000
57
58 #if (OFF_OPER + LEN_OPER) > OFF_RUNTIME
59 #error Increase OFF_RUNTIME
60 #endif
61 #if (OFF_RUNTIME + LEN_RUNTIME) > OFF_DOORBELL
62 #error Increase OFF_DOORBELL
63 #endif
64 #if (OFF_DOORBELL + LEN_DOORBELL) > XHCI_LEN_REGS
65 # error Increase XHCI_LEN_REGS
66 #endif
67
68 /* bit definitions */
69 #define USBCMD_RS (1<<0)
70 #define USBCMD_HCRST (1<<1)
71 #define USBCMD_INTE (1<<2)
72 #define USBCMD_HSEE (1<<3)
73 #define USBCMD_LHCRST (1<<7)
74 #define USBCMD_CSS (1<<8)
75 #define USBCMD_CRS (1<<9)
76 #define USBCMD_EWE (1<<10)
77 #define USBCMD_EU3S (1<<11)
78
79 #define USBSTS_HCH (1<<0)
80 #define USBSTS_HSE (1<<2)
81 #define USBSTS_EINT (1<<3)
82 #define USBSTS_PCD (1<<4)
83 #define USBSTS_SSS (1<<8)
84 #define USBSTS_RSS (1<<9)
85 #define USBSTS_SRE (1<<10)
86 #define USBSTS_CNR (1<<11)
87 #define USBSTS_HCE (1<<12)
88
89
90 #define PORTSC_CCS (1<<0)
91 #define PORTSC_PED (1<<1)
92 #define PORTSC_OCA (1<<3)
93 #define PORTSC_PR (1<<4)
94 #define PORTSC_PLS_SHIFT 5
95 #define PORTSC_PLS_MASK 0xf
96 #define PORTSC_PP (1<<9)
97 #define PORTSC_SPEED_SHIFT 10
98 #define PORTSC_SPEED_MASK 0xf
99 #define PORTSC_SPEED_FULL (1<<10)
100 #define PORTSC_SPEED_LOW (2<<10)
101 #define PORTSC_SPEED_HIGH (3<<10)
102 #define PORTSC_SPEED_SUPER (4<<10)
103 #define PORTSC_PIC_SHIFT 14
104 #define PORTSC_PIC_MASK 0x3
105 #define PORTSC_LWS (1<<16)
106 #define PORTSC_CSC (1<<17)
107 #define PORTSC_PEC (1<<18)
108 #define PORTSC_WRC (1<<19)
109 #define PORTSC_OCC (1<<20)
110 #define PORTSC_PRC (1<<21)
111 #define PORTSC_PLC (1<<22)
112 #define PORTSC_CEC (1<<23)
113 #define PORTSC_CAS (1<<24)
114 #define PORTSC_WCE (1<<25)
115 #define PORTSC_WDE (1<<26)
116 #define PORTSC_WOE (1<<27)
117 #define PORTSC_DR (1<<30)
118 #define PORTSC_WPR (1<<31)
119
120 #define CRCR_RCS (1<<0)
121 #define CRCR_CS (1<<1)
122 #define CRCR_CA (1<<2)
123 #define CRCR_CRR (1<<3)
124
125 #define IMAN_IP (1<<0)
126 #define IMAN_IE (1<<1)
127
128 #define ERDP_EHB (1<<3)
129
130 #define TRB_SIZE 16
131 typedef struct XHCITRB {
132 uint64_t parameter;
133 uint32_t status;
134 uint32_t control;
135 dma_addr_t addr;
136 bool ccs;
137 } XHCITRB;
138
139 enum {
140 PLS_U0 = 0,
141 PLS_U1 = 1,
142 PLS_U2 = 2,
143 PLS_U3 = 3,
144 PLS_DISABLED = 4,
145 PLS_RX_DETECT = 5,
146 PLS_INACTIVE = 6,
147 PLS_POLLING = 7,
148 PLS_RECOVERY = 8,
149 PLS_HOT_RESET = 9,
150 PLS_COMPILANCE_MODE = 10,
151 PLS_TEST_MODE = 11,
152 PLS_RESUME = 15,
153 };
154
155 #define CR_LINK TR_LINK
156
157 #define TRB_C (1<<0)
158 #define TRB_TYPE_SHIFT 10
159 #define TRB_TYPE_MASK 0x3f
160 #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK)
161
162 #define TRB_EV_ED (1<<2)
163
164 #define TRB_TR_ENT (1<<1)
165 #define TRB_TR_ISP (1<<2)
166 #define TRB_TR_NS (1<<3)
167 #define TRB_TR_CH (1<<4)
168 #define TRB_TR_IOC (1<<5)
169 #define TRB_TR_IDT (1<<6)
170 #define TRB_TR_TBC_SHIFT 7
171 #define TRB_TR_TBC_MASK 0x3
172 #define TRB_TR_BEI (1<<9)
173 #define TRB_TR_TLBPC_SHIFT 16
174 #define TRB_TR_TLBPC_MASK 0xf
175 #define TRB_TR_FRAMEID_SHIFT 20
176 #define TRB_TR_FRAMEID_MASK 0x7ff
177 #define TRB_TR_SIA (1<<31)
178
179 #define TRB_TR_DIR (1<<16)
180
181 #define TRB_CR_SLOTID_SHIFT 24
182 #define TRB_CR_SLOTID_MASK 0xff
183 #define TRB_CR_EPID_SHIFT 16
184 #define TRB_CR_EPID_MASK 0x1f
185
186 #define TRB_CR_BSR (1<<9)
187 #define TRB_CR_DC (1<<9)
188
189 #define TRB_LK_TC (1<<1)
190
191 #define TRB_INTR_SHIFT 22
192 #define TRB_INTR_MASK 0x3ff
193 #define TRB_INTR(t) (((t).status >> TRB_INTR_SHIFT) & TRB_INTR_MASK)
194
195 #define EP_TYPE_MASK 0x7
196 #define EP_TYPE_SHIFT 3
197
198 #define EP_STATE_MASK 0x7
199 #define EP_DISABLED (0<<0)
200 #define EP_RUNNING (1<<0)
201 #define EP_HALTED (2<<0)
202 #define EP_STOPPED (3<<0)
203 #define EP_ERROR (4<<0)
204
205 #define SLOT_STATE_MASK 0x1f
206 #define SLOT_STATE_SHIFT 27
207 #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK)
208 #define SLOT_ENABLED 0
209 #define SLOT_DEFAULT 1
210 #define SLOT_ADDRESSED 2
211 #define SLOT_CONFIGURED 3
212
213 #define SLOT_CONTEXT_ENTRIES_MASK 0x1f
214 #define SLOT_CONTEXT_ENTRIES_SHIFT 27
215
216 #define get_field(data, field) \
217 (((data) >> field##_SHIFT) & field##_MASK)
218
219 #define set_field(data, newval, field) do { \
220 uint32_t val_ = *data; \
221 val_ &= ~(field##_MASK << field##_SHIFT); \
222 val_ |= ((newval) & field##_MASK) << field##_SHIFT; \
223 *data = val_; \
224 } while (0)
225
226 typedef enum EPType {
227 ET_INVALID = 0,
228 ET_ISO_OUT,
229 ET_BULK_OUT,
230 ET_INTR_OUT,
231 ET_CONTROL,
232 ET_ISO_IN,
233 ET_BULK_IN,
234 ET_INTR_IN,
235 } EPType;
236
237 typedef struct XHCITransfer {
238 XHCIEPContext *epctx;
239 USBPacket packet;
240 QEMUSGList sgl;
241 bool running_async;
242 bool running_retry;
243 bool complete;
244 bool int_req;
245 unsigned int iso_pkts;
246 unsigned int streamid;
247 bool in_xfer;
248 bool iso_xfer;
249 bool timed_xfer;
250
251 unsigned int trb_count;
252 XHCITRB *trbs;
253
254 TRBCCode status;
255
256 unsigned int pkts;
257 unsigned int pktsize;
258 unsigned int cur_pkt;
259
260 uint64_t mfindex_kick;
261
262 QTAILQ_ENTRY(XHCITransfer) next;
263 } XHCITransfer;
264
265 struct XHCIStreamContext {
266 dma_addr_t pctx;
267 unsigned int sct;
268 XHCIRing ring;
269 };
270
271 struct XHCIEPContext {
272 XHCIState *xhci;
273 unsigned int slotid;
274 unsigned int epid;
275
276 XHCIRing ring;
277 uint32_t xfer_count;
278 QTAILQ_HEAD(, XHCITransfer) transfers;
279 XHCITransfer *retry;
280 EPType type;
281 dma_addr_t pctx;
282 unsigned int max_psize;
283 uint32_t state;
284 uint32_t kick_active;
285
286 /* streams */
287 unsigned int max_pstreams;
288 bool lsa;
289 unsigned int nr_pstreams;
290 XHCIStreamContext *pstreams;
291
292 /* iso xfer scheduling */
293 unsigned int interval;
294 int64_t mfindex_last;
295 QEMUTimer *kick_timer;
296 };
297
298 typedef struct XHCIEvRingSeg {
299 uint32_t addr_low;
300 uint32_t addr_high;
301 uint32_t size;
302 uint32_t rsvd;
303 } XHCIEvRingSeg;
304
305 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
306 unsigned int epid, unsigned int streamid);
307 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid);
308 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
309 unsigned int epid);
310 static void xhci_xfer_report(XHCITransfer *xfer);
311 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v);
312 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v);
313 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx);
314
315 static const char *TRBType_names[] = {
316 [TRB_RESERVED] = "TRB_RESERVED",
317 [TR_NORMAL] = "TR_NORMAL",
318 [TR_SETUP] = "TR_SETUP",
319 [TR_DATA] = "TR_DATA",
320 [TR_STATUS] = "TR_STATUS",
321 [TR_ISOCH] = "TR_ISOCH",
322 [TR_LINK] = "TR_LINK",
323 [TR_EVDATA] = "TR_EVDATA",
324 [TR_NOOP] = "TR_NOOP",
325 [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT",
326 [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT",
327 [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE",
328 [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT",
329 [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT",
330 [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT",
331 [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT",
332 [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE",
333 [CR_RESET_DEVICE] = "CR_RESET_DEVICE",
334 [CR_FORCE_EVENT] = "CR_FORCE_EVENT",
335 [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW",
336 [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE",
337 [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH",
338 [CR_FORCE_HEADER] = "CR_FORCE_HEADER",
339 [CR_NOOP] = "CR_NOOP",
340 [ER_TRANSFER] = "ER_TRANSFER",
341 [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE",
342 [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE",
343 [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST",
344 [ER_DOORBELL] = "ER_DOORBELL",
345 [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER",
346 [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION",
347 [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP",
348 [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION",
349 [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE",
350 };
351
352 static const char *TRBCCode_names[] = {
353 [CC_INVALID] = "CC_INVALID",
354 [CC_SUCCESS] = "CC_SUCCESS",
355 [CC_DATA_BUFFER_ERROR] = "CC_DATA_BUFFER_ERROR",
356 [CC_BABBLE_DETECTED] = "CC_BABBLE_DETECTED",
357 [CC_USB_TRANSACTION_ERROR] = "CC_USB_TRANSACTION_ERROR",
358 [CC_TRB_ERROR] = "CC_TRB_ERROR",
359 [CC_STALL_ERROR] = "CC_STALL_ERROR",
360 [CC_RESOURCE_ERROR] = "CC_RESOURCE_ERROR",
361 [CC_BANDWIDTH_ERROR] = "CC_BANDWIDTH_ERROR",
362 [CC_NO_SLOTS_ERROR] = "CC_NO_SLOTS_ERROR",
363 [CC_INVALID_STREAM_TYPE_ERROR] = "CC_INVALID_STREAM_TYPE_ERROR",
364 [CC_SLOT_NOT_ENABLED_ERROR] = "CC_SLOT_NOT_ENABLED_ERROR",
365 [CC_EP_NOT_ENABLED_ERROR] = "CC_EP_NOT_ENABLED_ERROR",
366 [CC_SHORT_PACKET] = "CC_SHORT_PACKET",
367 [CC_RING_UNDERRUN] = "CC_RING_UNDERRUN",
368 [CC_RING_OVERRUN] = "CC_RING_OVERRUN",
369 [CC_VF_ER_FULL] = "CC_VF_ER_FULL",
370 [CC_PARAMETER_ERROR] = "CC_PARAMETER_ERROR",
371 [CC_BANDWIDTH_OVERRUN] = "CC_BANDWIDTH_OVERRUN",
372 [CC_CONTEXT_STATE_ERROR] = "CC_CONTEXT_STATE_ERROR",
373 [CC_NO_PING_RESPONSE_ERROR] = "CC_NO_PING_RESPONSE_ERROR",
374 [CC_EVENT_RING_FULL_ERROR] = "CC_EVENT_RING_FULL_ERROR",
375 [CC_INCOMPATIBLE_DEVICE_ERROR] = "CC_INCOMPATIBLE_DEVICE_ERROR",
376 [CC_MISSED_SERVICE_ERROR] = "CC_MISSED_SERVICE_ERROR",
377 [CC_COMMAND_RING_STOPPED] = "CC_COMMAND_RING_STOPPED",
378 [CC_COMMAND_ABORTED] = "CC_COMMAND_ABORTED",
379 [CC_STOPPED] = "CC_STOPPED",
380 [CC_STOPPED_LENGTH_INVALID] = "CC_STOPPED_LENGTH_INVALID",
381 [CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR]
382 = "CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR",
383 [CC_ISOCH_BUFFER_OVERRUN] = "CC_ISOCH_BUFFER_OVERRUN",
384 [CC_EVENT_LOST_ERROR] = "CC_EVENT_LOST_ERROR",
385 [CC_UNDEFINED_ERROR] = "CC_UNDEFINED_ERROR",
386 [CC_INVALID_STREAM_ID_ERROR] = "CC_INVALID_STREAM_ID_ERROR",
387 [CC_SECONDARY_BANDWIDTH_ERROR] = "CC_SECONDARY_BANDWIDTH_ERROR",
388 [CC_SPLIT_TRANSACTION_ERROR] = "CC_SPLIT_TRANSACTION_ERROR",
389 };
390
391 static const char *ep_state_names[] = {
392 [EP_DISABLED] = "disabled",
393 [EP_RUNNING] = "running",
394 [EP_HALTED] = "halted",
395 [EP_STOPPED] = "stopped",
396 [EP_ERROR] = "error",
397 };
398
399 static const char *lookup_name(uint32_t index, const char **list, uint32_t llen)
400 {
401 if (index >= llen || list[index] == NULL) {
402 return "???";
403 }
404 return list[index];
405 }
406
407 static const char *trb_name(XHCITRB *trb)
408 {
409 return lookup_name(TRB_TYPE(*trb), TRBType_names,
410 ARRAY_SIZE(TRBType_names));
411 }
412
413 static const char *event_name(XHCIEvent *event)
414 {
415 return lookup_name(event->ccode, TRBCCode_names,
416 ARRAY_SIZE(TRBCCode_names));
417 }
418
419 static const char *ep_state_name(uint32_t state)
420 {
421 return lookup_name(state, ep_state_names,
422 ARRAY_SIZE(ep_state_names));
423 }
424
425 bool xhci_get_flag(XHCIState *xhci, enum xhci_flags bit)
426 {
427 return xhci->flags & (1 << bit);
428 }
429
430 void xhci_set_flag(XHCIState *xhci, enum xhci_flags bit)
431 {
432 xhci->flags |= (1 << bit);
433 }
434
435 static uint64_t xhci_mfindex_get(XHCIState *xhci)
436 {
437 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
438 return (now - xhci->mfindex_start) / 125000;
439 }
440
441 static void xhci_mfwrap_update(XHCIState *xhci)
442 {
443 const uint32_t bits = USBCMD_RS | USBCMD_EWE;
444 uint32_t mfindex, left;
445 int64_t now;
446
447 if ((xhci->usbcmd & bits) == bits) {
448 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
449 mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff;
450 left = 0x4000 - mfindex;
451 timer_mod(xhci->mfwrap_timer, now + left * 125000);
452 } else {
453 timer_del(xhci->mfwrap_timer);
454 }
455 }
456
457 static void xhci_mfwrap_timer(void *opaque)
458 {
459 XHCIState *xhci = opaque;
460 XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS };
461
462 xhci_event(xhci, &wrap, 0);
463 xhci_mfwrap_update(xhci);
464 }
465
466 static void xhci_die(XHCIState *xhci)
467 {
468 xhci->usbsts |= USBSTS_HCE;
469 DPRINTF("xhci: asserted controller error\n");
470 }
471
472 static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
473 {
474 if (sizeof(dma_addr_t) == 4) {
475 return low;
476 } else {
477 return low | (((dma_addr_t)high << 16) << 16);
478 }
479 }
480
481 static inline dma_addr_t xhci_mask64(uint64_t addr)
482 {
483 if (sizeof(dma_addr_t) == 4) {
484 return addr & 0xffffffff;
485 } else {
486 return addr;
487 }
488 }
489
490 static inline void xhci_dma_read_u32s(XHCIState *xhci, dma_addr_t addr,
491 uint32_t *buf, size_t len)
492 {
493 int i;
494
495 assert((len % sizeof(uint32_t)) == 0);
496
497 if (dma_memory_read(xhci->as, addr, buf, len,
498 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
499 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
500 __func__);
501 memset(buf, 0xff, len);
502 xhci_die(xhci);
503 return;
504 }
505
506 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
507 buf[i] = le32_to_cpu(buf[i]);
508 }
509 }
510
511 static inline void xhci_dma_write_u32s(XHCIState *xhci, dma_addr_t addr,
512 const uint32_t *buf, size_t len)
513 {
514 int i;
515 uint32_t tmp[5];
516 uint32_t n = len / sizeof(uint32_t);
517
518 assert((len % sizeof(uint32_t)) == 0);
519 assert(n <= ARRAY_SIZE(tmp));
520
521 for (i = 0; i < n; i++) {
522 tmp[i] = cpu_to_le32(buf[i]);
523 }
524 if (dma_memory_write(xhci->as, addr, tmp, len,
525 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
526 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
527 __func__);
528 xhci_die(xhci);
529 return;
530 }
531 }
532
533 static XHCIPort *xhci_lookup_port(XHCIState *xhci, struct USBPort *uport)
534 {
535 int index;
536
537 if (!uport->dev) {
538 return NULL;
539 }
540 switch (uport->dev->speed) {
541 case USB_SPEED_LOW:
542 case USB_SPEED_FULL:
543 case USB_SPEED_HIGH:
544 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
545 index = uport->index + xhci->numports_3;
546 } else {
547 index = uport->index;
548 }
549 break;
550 case USB_SPEED_SUPER:
551 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
552 index = uport->index;
553 } else {
554 index = uport->index + xhci->numports_2;
555 }
556 break;
557 default:
558 return NULL;
559 }
560 return &xhci->ports[index];
561 }
562
563 static void xhci_intr_update(XHCIState *xhci, int v)
564 {
565 int level = 0;
566
567 if (v == 0) {
568 if (xhci->intr[0].iman & IMAN_IP &&
569 xhci->intr[0].iman & IMAN_IE &&
570 xhci->usbcmd & USBCMD_INTE) {
571 level = 1;
572 }
573 if (xhci->intr_raise) {
574 if (xhci->intr_raise(xhci, 0, level)) {
575 xhci->intr[0].iman &= ~IMAN_IP;
576 }
577 }
578 }
579 if (xhci->intr_update) {
580 xhci->intr_update(xhci, v,
581 xhci->intr[v].iman & IMAN_IE);
582 }
583 }
584
585 static void xhci_intr_raise(XHCIState *xhci, int v)
586 {
587 bool pending = (xhci->intr[v].erdp_low & ERDP_EHB);
588
589 xhci->intr[v].erdp_low |= ERDP_EHB;
590 xhci->intr[v].iman |= IMAN_IP;
591 xhci->usbsts |= USBSTS_EINT;
592
593 if (pending) {
594 return;
595 }
596 if (!(xhci->intr[v].iman & IMAN_IE)) {
597 return;
598 }
599
600 if (!(xhci->usbcmd & USBCMD_INTE)) {
601 return;
602 }
603 if (xhci->intr_raise) {
604 if (xhci->intr_raise(xhci, v, true)) {
605 xhci->intr[v].iman &= ~IMAN_IP;
606 }
607 }
608 }
609
610 static inline int xhci_running(XHCIState *xhci)
611 {
612 return !(xhci->usbsts & USBSTS_HCH);
613 }
614
615 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v)
616 {
617 XHCIInterrupter *intr = &xhci->intr[v];
618 XHCITRB ev_trb;
619 dma_addr_t addr;
620
621 ev_trb.parameter = cpu_to_le64(event->ptr);
622 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
623 ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
624 event->flags | (event->type << TRB_TYPE_SHIFT);
625 if (intr->er_pcs) {
626 ev_trb.control |= TRB_C;
627 }
628 ev_trb.control = cpu_to_le32(ev_trb.control);
629
630 trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb),
631 event_name(event), ev_trb.parameter,
632 ev_trb.status, ev_trb.control);
633
634 addr = intr->er_start + TRB_SIZE*intr->er_ep_idx;
635 if (dma_memory_write(xhci->as, addr, &ev_trb, TRB_SIZE,
636 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
637 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
638 __func__);
639 xhci_die(xhci);
640 }
641
642 intr->er_ep_idx++;
643 if (intr->er_ep_idx >= intr->er_size) {
644 intr->er_ep_idx = 0;
645 intr->er_pcs = !intr->er_pcs;
646 }
647 }
648
649 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v)
650 {
651 XHCIInterrupter *intr;
652 dma_addr_t erdp;
653 unsigned int dp_idx;
654
655 if (v >= xhci->numintrs) {
656 DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs);
657 return;
658 }
659 intr = &xhci->intr[v];
660
661 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
662 if (erdp < intr->er_start ||
663 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) {
664 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
665 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n",
666 v, intr->er_start, intr->er_size);
667 xhci_die(xhci);
668 return;
669 }
670
671 dp_idx = (erdp - intr->er_start) / TRB_SIZE;
672 assert(dp_idx < intr->er_size);
673
674 if ((intr->er_ep_idx + 2) % intr->er_size == dp_idx) {
675 DPRINTF("xhci: ER %d full, send ring full error\n", v);
676 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
677 xhci_write_event(xhci, &full, v);
678 } else if ((intr->er_ep_idx + 1) % intr->er_size == dp_idx) {
679 DPRINTF("xhci: ER %d full, drop event\n", v);
680 } else {
681 xhci_write_event(xhci, event, v);
682 }
683
684 xhci_intr_raise(xhci, v);
685 }
686
687 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring,
688 dma_addr_t base)
689 {
690 ring->dequeue = base;
691 ring->ccs = 1;
692 }
693
694 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
695 dma_addr_t *addr)
696 {
697 uint32_t link_cnt = 0;
698
699 while (1) {
700 TRBType type;
701 if (dma_memory_read(xhci->as, ring->dequeue, trb, TRB_SIZE,
702 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
703 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
704 __func__);
705 return 0;
706 }
707 trb->addr = ring->dequeue;
708 trb->ccs = ring->ccs;
709 le64_to_cpus(&trb->parameter);
710 le32_to_cpus(&trb->status);
711 le32_to_cpus(&trb->control);
712
713 trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb),
714 trb->parameter, trb->status, trb->control);
715
716 if ((trb->control & TRB_C) != ring->ccs) {
717 return 0;
718 }
719
720 type = TRB_TYPE(*trb);
721
722 if (type != TR_LINK) {
723 if (addr) {
724 *addr = ring->dequeue;
725 }
726 ring->dequeue += TRB_SIZE;
727 return type;
728 } else {
729 if (++link_cnt > TRB_LINK_LIMIT) {
730 trace_usb_xhci_enforced_limit("trb-link");
731 return 0;
732 }
733 ring->dequeue = xhci_mask64(trb->parameter);
734 if (trb->control & TRB_LK_TC) {
735 ring->ccs = !ring->ccs;
736 }
737 }
738 }
739 }
740
741 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
742 {
743 XHCITRB trb;
744 int length = 0;
745 dma_addr_t dequeue = ring->dequeue;
746 bool ccs = ring->ccs;
747 /* hack to bundle together the two/three TDs that make a setup transfer */
748 bool control_td_set = 0;
749 uint32_t link_cnt = 0;
750
751 do {
752 TRBType type;
753 if (dma_memory_read(xhci->as, dequeue, &trb, TRB_SIZE,
754 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
755 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
756 __func__);
757 return -1;
758 }
759 le64_to_cpus(&trb.parameter);
760 le32_to_cpus(&trb.status);
761 le32_to_cpus(&trb.control);
762
763 if ((trb.control & TRB_C) != ccs) {
764 return -length;
765 }
766
767 type = TRB_TYPE(trb);
768
769 if (type == TR_LINK) {
770 if (++link_cnt > TRB_LINK_LIMIT) {
771 return -length;
772 }
773 dequeue = xhci_mask64(trb.parameter);
774 if (trb.control & TRB_LK_TC) {
775 ccs = !ccs;
776 }
777 continue;
778 }
779
780 length += 1;
781 dequeue += TRB_SIZE;
782
783 if (type == TR_SETUP) {
784 control_td_set = 1;
785 } else if (type == TR_STATUS) {
786 control_td_set = 0;
787 }
788
789 if (!control_td_set && !(trb.control & TRB_TR_CH)) {
790 return length;
791 }
792
793 /*
794 * According to the xHCI spec, Transfer Ring segments should have
795 * a maximum size of 64 kB (see chapter "6 Data Structures")
796 */
797 } while (length < TRB_LINK_LIMIT * 65536 / TRB_SIZE);
798
799 qemu_log_mask(LOG_GUEST_ERROR, "%s: exceeded maximum transfer ring size!\n",
800 __func__);
801
802 return -1;
803 }
804
805 static void xhci_er_reset(XHCIState *xhci, int v)
806 {
807 XHCIInterrupter *intr = &xhci->intr[v];
808 XHCIEvRingSeg seg;
809 dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high);
810
811 if (intr->erstsz == 0 || erstba == 0) {
812 /* disabled */
813 intr->er_start = 0;
814 intr->er_size = 0;
815 return;
816 }
817 /* cache the (sole) event ring segment location */
818 if (intr->erstsz != 1) {
819 DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz);
820 xhci_die(xhci);
821 return;
822 }
823 if (dma_memory_read(xhci->as, erstba, &seg, sizeof(seg),
824 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
825 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory access failed!\n",
826 __func__);
827 xhci_die(xhci);
828 return;
829 }
830
831 le32_to_cpus(&seg.addr_low);
832 le32_to_cpus(&seg.addr_high);
833 le32_to_cpus(&seg.size);
834 if (seg.size < 16 || seg.size > 4096) {
835 DPRINTF("xhci: invalid value for segment size: %d\n", seg.size);
836 xhci_die(xhci);
837 return;
838 }
839 intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high);
840 intr->er_size = seg.size;
841
842 intr->er_ep_idx = 0;
843 intr->er_pcs = 1;
844
845 DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n",
846 v, intr->er_start, intr->er_size);
847 }
848
849 static void xhci_run(XHCIState *xhci)
850 {
851 trace_usb_xhci_run();
852 xhci->usbsts &= ~USBSTS_HCH;
853 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
854 }
855
856 static void xhci_stop(XHCIState *xhci)
857 {
858 trace_usb_xhci_stop();
859 xhci->usbsts |= USBSTS_HCH;
860 xhci->crcr_low &= ~CRCR_CRR;
861 }
862
863 static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count,
864 dma_addr_t base)
865 {
866 XHCIStreamContext *stctx;
867 unsigned int i;
868
869 stctx = g_new0(XHCIStreamContext, count);
870 for (i = 0; i < count; i++) {
871 stctx[i].pctx = base + i * 16;
872 stctx[i].sct = -1;
873 }
874 return stctx;
875 }
876
877 static void xhci_reset_streams(XHCIEPContext *epctx)
878 {
879 unsigned int i;
880
881 for (i = 0; i < epctx->nr_pstreams; i++) {
882 epctx->pstreams[i].sct = -1;
883 }
884 }
885
886 static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base)
887 {
888 assert(epctx->pstreams == NULL);
889 epctx->nr_pstreams = 2 << epctx->max_pstreams;
890 epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base);
891 }
892
893 static void xhci_free_streams(XHCIEPContext *epctx)
894 {
895 assert(epctx->pstreams != NULL);
896
897 g_free(epctx->pstreams);
898 epctx->pstreams = NULL;
899 epctx->nr_pstreams = 0;
900 }
901
902 static int xhci_epmask_to_eps_with_streams(XHCIState *xhci,
903 unsigned int slotid,
904 uint32_t epmask,
905 XHCIEPContext **epctxs,
906 USBEndpoint **eps)
907 {
908 XHCISlot *slot;
909 XHCIEPContext *epctx;
910 USBEndpoint *ep;
911 int i, j;
912
913 assert(slotid >= 1 && slotid <= xhci->numslots);
914
915 slot = &xhci->slots[slotid - 1];
916
917 for (i = 2, j = 0; i <= 31; i++) {
918 if (!(epmask & (1u << i))) {
919 continue;
920 }
921
922 epctx = slot->eps[i - 1];
923 ep = xhci_epid_to_usbep(epctx);
924 if (!epctx || !epctx->nr_pstreams || !ep) {
925 continue;
926 }
927
928 if (epctxs) {
929 epctxs[j] = epctx;
930 }
931 eps[j++] = ep;
932 }
933 return j;
934 }
935
936 static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid,
937 uint32_t epmask)
938 {
939 USBEndpoint *eps[30];
940 int nr_eps;
941
942 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps);
943 if (nr_eps) {
944 usb_device_free_streams(eps[0]->dev, eps, nr_eps);
945 }
946 }
947
948 static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid,
949 uint32_t epmask)
950 {
951 XHCIEPContext *epctxs[30];
952 USBEndpoint *eps[30];
953 int i, r, nr_eps, req_nr_streams, dev_max_streams;
954
955 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs,
956 eps);
957 if (nr_eps == 0) {
958 return CC_SUCCESS;
959 }
960
961 req_nr_streams = epctxs[0]->nr_pstreams;
962 dev_max_streams = eps[0]->max_streams;
963
964 for (i = 1; i < nr_eps; i++) {
965 /*
966 * HdG: I don't expect these to ever trigger, but if they do we need
967 * to come up with another solution, ie group identical endpoints
968 * together and make an usb_device_alloc_streams call per group.
969 */
970 if (epctxs[i]->nr_pstreams != req_nr_streams) {
971 FIXME("guest streams config not identical for all eps");
972 return CC_RESOURCE_ERROR;
973 }
974 if (eps[i]->max_streams != dev_max_streams) {
975 FIXME("device streams config not identical for all eps");
976 return CC_RESOURCE_ERROR;
977 }
978 }
979
980 /*
981 * max-streams in both the device descriptor and in the controller is a
982 * power of 2. But stream id 0 is reserved, so if a device can do up to 4
983 * streams the guest will ask for 5 rounded up to the next power of 2 which
984 * becomes 8. For emulated devices usb_device_alloc_streams is a nop.
985 *
986 * For redirected devices however this is an issue, as there we must ask
987 * the real xhci controller to alloc streams, and the host driver for the
988 * real xhci controller will likely disallow allocating more streams then
989 * the device can handle.
990 *
991 * So we limit the requested nr_streams to the maximum number the device
992 * can handle.
993 */
994 if (req_nr_streams > dev_max_streams) {
995 req_nr_streams = dev_max_streams;
996 }
997
998 r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams);
999 if (r != 0) {
1000 DPRINTF("xhci: alloc streams failed\n");
1001 return CC_RESOURCE_ERROR;
1002 }
1003
1004 return CC_SUCCESS;
1005 }
1006
1007 static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx,
1008 unsigned int streamid,
1009 uint32_t *cc_error)
1010 {
1011 XHCIStreamContext *sctx;
1012 dma_addr_t base;
1013 uint32_t ctx[2], sct;
1014
1015 assert(streamid != 0);
1016 if (epctx->lsa) {
1017 if (streamid >= epctx->nr_pstreams) {
1018 *cc_error = CC_INVALID_STREAM_ID_ERROR;
1019 return NULL;
1020 }
1021 sctx = epctx->pstreams + streamid;
1022 } else {
1023 fprintf(stderr, "xhci: FIXME: secondary streams not implemented yet");
1024 *cc_error = CC_INVALID_STREAM_TYPE_ERROR;
1025 return NULL;
1026 }
1027
1028 if (sctx->sct == -1) {
1029 xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx));
1030 sct = (ctx[0] >> 1) & 0x07;
1031 if (epctx->lsa && sct != 1) {
1032 *cc_error = CC_INVALID_STREAM_TYPE_ERROR;
1033 return NULL;
1034 }
1035 sctx->sct = sct;
1036 base = xhci_addr64(ctx[0] & ~0xf, ctx[1]);
1037 xhci_ring_init(epctx->xhci, &sctx->ring, base);
1038 }
1039 return sctx;
1040 }
1041
1042 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
1043 XHCIStreamContext *sctx, uint32_t state)
1044 {
1045 XHCIRing *ring = NULL;
1046 uint32_t ctx[5];
1047 uint32_t ctx2[2];
1048
1049 xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1050 ctx[0] &= ~EP_STATE_MASK;
1051 ctx[0] |= state;
1052
1053 /* update ring dequeue ptr */
1054 if (epctx->nr_pstreams) {
1055 if (sctx != NULL) {
1056 ring = &sctx->ring;
1057 xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1058 ctx2[0] &= 0xe;
1059 ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs;
1060 ctx2[1] = (sctx->ring.dequeue >> 16) >> 16;
1061 xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1062 }
1063 } else {
1064 ring = &epctx->ring;
1065 }
1066 if (ring) {
1067 ctx[2] = ring->dequeue | ring->ccs;
1068 ctx[3] = (ring->dequeue >> 16) >> 16;
1069
1070 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n",
1071 epctx->pctx, state, ctx[3], ctx[2]);
1072 }
1073
1074 xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1075 if (epctx->state != state) {
1076 trace_usb_xhci_ep_state(epctx->slotid, epctx->epid,
1077 ep_state_name(epctx->state),
1078 ep_state_name(state));
1079 }
1080 epctx->state = state;
1081 }
1082
1083 static void xhci_ep_kick_timer(void *opaque)
1084 {
1085 XHCIEPContext *epctx = opaque;
1086 xhci_kick_epctx(epctx, 0);
1087 }
1088
1089 static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci,
1090 unsigned int slotid,
1091 unsigned int epid)
1092 {
1093 XHCIEPContext *epctx;
1094
1095 epctx = g_new0(XHCIEPContext, 1);
1096 epctx->xhci = xhci;
1097 epctx->slotid = slotid;
1098 epctx->epid = epid;
1099
1100 QTAILQ_INIT(&epctx->transfers);
1101 epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx);
1102
1103 return epctx;
1104 }
1105
1106 static void xhci_init_epctx(XHCIEPContext *epctx,
1107 dma_addr_t pctx, uint32_t *ctx)
1108 {
1109 dma_addr_t dequeue;
1110
1111 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
1112
1113 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK;
1114 epctx->pctx = pctx;
1115 epctx->max_psize = ctx[1]>>16;
1116 epctx->max_psize *= 1+((ctx[1]>>8)&0xff);
1117 epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask;
1118 epctx->lsa = (ctx[0] >> 15) & 1;
1119 if (epctx->max_pstreams) {
1120 xhci_alloc_streams(epctx, dequeue);
1121 } else {
1122 xhci_ring_init(epctx->xhci, &epctx->ring, dequeue);
1123 epctx->ring.ccs = ctx[2] & 1;
1124 }
1125
1126 epctx->interval = 1 << ((ctx[0] >> 16) & 0xff);
1127 }
1128
1129 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
1130 unsigned int epid, dma_addr_t pctx,
1131 uint32_t *ctx)
1132 {
1133 XHCISlot *slot;
1134 XHCIEPContext *epctx;
1135
1136 trace_usb_xhci_ep_enable(slotid, epid);
1137 assert(slotid >= 1 && slotid <= xhci->numslots);
1138 assert(epid >= 1 && epid <= 31);
1139
1140 slot = &xhci->slots[slotid-1];
1141 if (slot->eps[epid-1]) {
1142 xhci_disable_ep(xhci, slotid, epid);
1143 }
1144
1145 epctx = xhci_alloc_epctx(xhci, slotid, epid);
1146 slot->eps[epid-1] = epctx;
1147 xhci_init_epctx(epctx, pctx, ctx);
1148
1149 DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) "
1150 "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize);
1151
1152 epctx->mfindex_last = 0;
1153
1154 epctx->state = EP_RUNNING;
1155 ctx[0] &= ~EP_STATE_MASK;
1156 ctx[0] |= EP_RUNNING;
1157
1158 return CC_SUCCESS;
1159 }
1160
1161 static XHCITransfer *xhci_ep_alloc_xfer(XHCIEPContext *epctx,
1162 uint32_t length)
1163 {
1164 uint32_t limit = epctx->nr_pstreams + 16;
1165 XHCITransfer *xfer;
1166
1167 if (epctx->xfer_count >= limit) {
1168 return NULL;
1169 }
1170
1171 xfer = g_new0(XHCITransfer, 1);
1172 xfer->epctx = epctx;
1173 xfer->trbs = g_new(XHCITRB, length);
1174 xfer->trb_count = length;
1175 usb_packet_init(&xfer->packet);
1176
1177 QTAILQ_INSERT_TAIL(&epctx->transfers, xfer, next);
1178 epctx->xfer_count++;
1179
1180 return xfer;
1181 }
1182
1183 static void xhci_ep_free_xfer(XHCITransfer *xfer)
1184 {
1185 QTAILQ_REMOVE(&xfer->epctx->transfers, xfer, next);
1186 xfer->epctx->xfer_count--;
1187
1188 usb_packet_cleanup(&xfer->packet);
1189 g_free(xfer->trbs);
1190 g_free(xfer);
1191 }
1192
1193 static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report)
1194 {
1195 int killed = 0;
1196
1197 if (report && (t->running_async || t->running_retry)) {
1198 t->status = report;
1199 xhci_xfer_report(t);
1200 }
1201
1202 if (t->running_async) {
1203 usb_cancel_packet(&t->packet);
1204 t->running_async = 0;
1205 killed = 1;
1206 }
1207 if (t->running_retry) {
1208 if (t->epctx) {
1209 t->epctx->retry = NULL;
1210 timer_del(t->epctx->kick_timer);
1211 }
1212 t->running_retry = 0;
1213 killed = 1;
1214 }
1215 g_free(t->trbs);
1216
1217 t->trbs = NULL;
1218 t->trb_count = 0;
1219
1220 return killed;
1221 }
1222
1223 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
1224 unsigned int epid, TRBCCode report)
1225 {
1226 XHCISlot *slot;
1227 XHCIEPContext *epctx;
1228 XHCITransfer *xfer;
1229 int killed = 0;
1230 USBEndpoint *ep = NULL;
1231 assert(slotid >= 1 && slotid <= xhci->numslots);
1232 assert(epid >= 1 && epid <= 31);
1233
1234 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid);
1235
1236 slot = &xhci->slots[slotid-1];
1237
1238 if (!slot->eps[epid-1]) {
1239 return 0;
1240 }
1241
1242 epctx = slot->eps[epid-1];
1243
1244 for (;;) {
1245 xfer = QTAILQ_FIRST(&epctx->transfers);
1246 if (xfer == NULL) {
1247 break;
1248 }
1249 killed += xhci_ep_nuke_one_xfer(xfer, report);
1250 if (killed) {
1251 report = 0; /* Only report once */
1252 }
1253 xhci_ep_free_xfer(xfer);
1254 }
1255
1256 ep = xhci_epid_to_usbep(epctx);
1257 if (ep) {
1258 usb_device_ep_stopped(ep->dev, ep);
1259 }
1260 return killed;
1261 }
1262
1263 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
1264 unsigned int epid)
1265 {
1266 XHCISlot *slot;
1267 XHCIEPContext *epctx;
1268
1269 trace_usb_xhci_ep_disable(slotid, epid);
1270 assert(slotid >= 1 && slotid <= xhci->numslots);
1271 assert(epid >= 1 && epid <= 31);
1272
1273 slot = &xhci->slots[slotid-1];
1274
1275 if (!slot->eps[epid-1]) {
1276 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid);
1277 return CC_SUCCESS;
1278 }
1279
1280 xhci_ep_nuke_xfers(xhci, slotid, epid, 0);
1281
1282 epctx = slot->eps[epid-1];
1283
1284 if (epctx->nr_pstreams) {
1285 xhci_free_streams(epctx);
1286 }
1287
1288 /* only touch guest RAM if we're not resetting the HC */
1289 if (xhci->dcbaap_low || xhci->dcbaap_high) {
1290 xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED);
1291 }
1292
1293 timer_free(epctx->kick_timer);
1294 g_free(epctx);
1295 slot->eps[epid-1] = NULL;
1296
1297 return CC_SUCCESS;
1298 }
1299
1300 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
1301 unsigned int epid)
1302 {
1303 XHCISlot *slot;
1304 XHCIEPContext *epctx;
1305
1306 trace_usb_xhci_ep_stop(slotid, epid);
1307 assert(slotid >= 1 && slotid <= xhci->numslots);
1308
1309 if (epid < 1 || epid > 31) {
1310 DPRINTF("xhci: bad ep %d\n", epid);
1311 return CC_TRB_ERROR;
1312 }
1313
1314 slot = &xhci->slots[slotid-1];
1315
1316 if (!slot->eps[epid-1]) {
1317 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1318 return CC_EP_NOT_ENABLED_ERROR;
1319 }
1320
1321 if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) {
1322 DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, "
1323 "data might be lost\n");
1324 }
1325
1326 epctx = slot->eps[epid-1];
1327
1328 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1329
1330 if (epctx->nr_pstreams) {
1331 xhci_reset_streams(epctx);
1332 }
1333
1334 return CC_SUCCESS;
1335 }
1336
1337 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
1338 unsigned int epid)
1339 {
1340 XHCISlot *slot;
1341 XHCIEPContext *epctx;
1342
1343 trace_usb_xhci_ep_reset(slotid, epid);
1344 assert(slotid >= 1 && slotid <= xhci->numslots);
1345
1346 if (epid < 1 || epid > 31) {
1347 DPRINTF("xhci: bad ep %d\n", epid);
1348 return CC_TRB_ERROR;
1349 }
1350
1351 slot = &xhci->slots[slotid-1];
1352
1353 if (!slot->eps[epid-1]) {
1354 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1355 return CC_EP_NOT_ENABLED_ERROR;
1356 }
1357
1358 epctx = slot->eps[epid-1];
1359
1360 if (epctx->state != EP_HALTED) {
1361 DPRINTF("xhci: reset EP while EP %d not halted (%d)\n",
1362 epid, epctx->state);
1363 return CC_CONTEXT_STATE_ERROR;
1364 }
1365
1366 if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) {
1367 DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, "
1368 "data might be lost\n");
1369 }
1370
1371 if (!xhci->slots[slotid-1].uport ||
1372 !xhci->slots[slotid-1].uport->dev ||
1373 !xhci->slots[slotid-1].uport->dev->attached) {
1374 return CC_USB_TRANSACTION_ERROR;
1375 }
1376
1377 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1378
1379 if (epctx->nr_pstreams) {
1380 xhci_reset_streams(epctx);
1381 }
1382
1383 return CC_SUCCESS;
1384 }
1385
1386 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid,
1387 unsigned int epid, unsigned int streamid,
1388 uint64_t pdequeue)
1389 {
1390 XHCISlot *slot;
1391 XHCIEPContext *epctx;
1392 XHCIStreamContext *sctx;
1393 dma_addr_t dequeue;
1394
1395 assert(slotid >= 1 && slotid <= xhci->numslots);
1396
1397 if (epid < 1 || epid > 31) {
1398 DPRINTF("xhci: bad ep %d\n", epid);
1399 return CC_TRB_ERROR;
1400 }
1401
1402 trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue);
1403 dequeue = xhci_mask64(pdequeue);
1404
1405 slot = &xhci->slots[slotid-1];
1406
1407 if (!slot->eps[epid-1]) {
1408 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1409 return CC_EP_NOT_ENABLED_ERROR;
1410 }
1411
1412 epctx = slot->eps[epid-1];
1413
1414 if (epctx->state != EP_STOPPED) {
1415 DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid);
1416 return CC_CONTEXT_STATE_ERROR;
1417 }
1418
1419 if (epctx->nr_pstreams) {
1420 uint32_t err;
1421 sctx = xhci_find_stream(epctx, streamid, &err);
1422 if (sctx == NULL) {
1423 return err;
1424 }
1425 xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf);
1426 sctx->ring.ccs = dequeue & 1;
1427 } else {
1428 sctx = NULL;
1429 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF);
1430 epctx->ring.ccs = dequeue & 1;
1431 }
1432
1433 xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED);
1434
1435 return CC_SUCCESS;
1436 }
1437
1438 static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer)
1439 {
1440 XHCIState *xhci = xfer->epctx->xhci;
1441 int i;
1442
1443 xfer->int_req = false;
1444 qemu_sglist_init(&xfer->sgl, DEVICE(xhci), xfer->trb_count, xhci->as);
1445 for (i = 0; i < xfer->trb_count; i++) {
1446 XHCITRB *trb = &xfer->trbs[i];
1447 dma_addr_t addr;
1448 unsigned int chunk = 0;
1449
1450 if (trb->control & TRB_TR_IOC) {
1451 xfer->int_req = true;
1452 }
1453
1454 switch (TRB_TYPE(*trb)) {
1455 case TR_DATA:
1456 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) {
1457 DPRINTF("xhci: data direction mismatch for TR_DATA\n");
1458 goto err;
1459 }
1460 /* fallthrough */
1461 case TR_NORMAL:
1462 case TR_ISOCH:
1463 addr = xhci_mask64(trb->parameter);
1464 chunk = trb->status & 0x1ffff;
1465 if (trb->control & TRB_TR_IDT) {
1466 if (chunk > 8 || in_xfer) {
1467 DPRINTF("xhci: invalid immediate data TRB\n");
1468 goto err;
1469 }
1470 qemu_sglist_add(&xfer->sgl, trb->addr, chunk);
1471 } else {
1472 qemu_sglist_add(&xfer->sgl, addr, chunk);
1473 }
1474 break;
1475 }
1476 }
1477
1478 return 0;
1479
1480 err:
1481 qemu_sglist_destroy(&xfer->sgl);
1482 xhci_die(xhci);
1483 return -1;
1484 }
1485
1486 static void xhci_xfer_unmap(XHCITransfer *xfer)
1487 {
1488 usb_packet_unmap(&xfer->packet, &xfer->sgl);
1489 qemu_sglist_destroy(&xfer->sgl);
1490 }
1491
1492 static void xhci_xfer_report(XHCITransfer *xfer)
1493 {
1494 uint32_t edtla = 0;
1495 unsigned int left;
1496 bool reported = 0;
1497 bool shortpkt = 0;
1498 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS};
1499 XHCIState *xhci = xfer->epctx->xhci;
1500 int i;
1501
1502 left = xfer->packet.actual_length;
1503
1504 for (i = 0; i < xfer->trb_count; i++) {
1505 XHCITRB *trb = &xfer->trbs[i];
1506 unsigned int chunk = 0;
1507
1508 switch (TRB_TYPE(*trb)) {
1509 case TR_SETUP:
1510 chunk = trb->status & 0x1ffff;
1511 if (chunk > 8) {
1512 chunk = 8;
1513 }
1514 break;
1515 case TR_DATA:
1516 case TR_NORMAL:
1517 case TR_ISOCH:
1518 chunk = trb->status & 0x1ffff;
1519 if (chunk > left) {
1520 chunk = left;
1521 if (xfer->status == CC_SUCCESS) {
1522 shortpkt = 1;
1523 }
1524 }
1525 left -= chunk;
1526 edtla += chunk;
1527 break;
1528 case TR_STATUS:
1529 reported = 0;
1530 shortpkt = 0;
1531 break;
1532 }
1533
1534 if (!reported && ((trb->control & TRB_TR_IOC) ||
1535 (shortpkt && (trb->control & TRB_TR_ISP)) ||
1536 (xfer->status != CC_SUCCESS && left == 0))) {
1537 event.slotid = xfer->epctx->slotid;
1538 event.epid = xfer->epctx->epid;
1539 event.length = (trb->status & 0x1ffff) - chunk;
1540 event.flags = 0;
1541 event.ptr = trb->addr;
1542 if (xfer->status == CC_SUCCESS) {
1543 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS;
1544 } else {
1545 event.ccode = xfer->status;
1546 }
1547 if (TRB_TYPE(*trb) == TR_EVDATA) {
1548 event.ptr = trb->parameter;
1549 event.flags |= TRB_EV_ED;
1550 event.length = edtla & 0xffffff;
1551 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length);
1552 edtla = 0;
1553 }
1554 xhci_event(xhci, &event, TRB_INTR(*trb));
1555 reported = 1;
1556 if (xfer->status != CC_SUCCESS) {
1557 return;
1558 }
1559 }
1560
1561 switch (TRB_TYPE(*trb)) {
1562 case TR_SETUP:
1563 reported = 0;
1564 shortpkt = 0;
1565 break;
1566 }
1567
1568 }
1569 }
1570
1571 static void xhci_stall_ep(XHCITransfer *xfer)
1572 {
1573 XHCIEPContext *epctx = xfer->epctx;
1574 XHCIState *xhci = epctx->xhci;
1575 uint32_t err;
1576 XHCIStreamContext *sctx;
1577
1578 if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
1579 /* never halt isoch endpoints, 4.10.2 */
1580 return;
1581 }
1582
1583 if (epctx->nr_pstreams) {
1584 sctx = xhci_find_stream(epctx, xfer->streamid, &err);
1585 if (sctx == NULL) {
1586 return;
1587 }
1588 sctx->ring.dequeue = xfer->trbs[0].addr;
1589 sctx->ring.ccs = xfer->trbs[0].ccs;
1590 xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED);
1591 } else {
1592 epctx->ring.dequeue = xfer->trbs[0].addr;
1593 epctx->ring.ccs = xfer->trbs[0].ccs;
1594 xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED);
1595 }
1596 }
1597
1598 static int xhci_setup_packet(XHCITransfer *xfer)
1599 {
1600 USBEndpoint *ep;
1601 int dir;
1602
1603 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT;
1604
1605 if (xfer->packet.ep) {
1606 ep = xfer->packet.ep;
1607 } else {
1608 ep = xhci_epid_to_usbep(xfer->epctx);
1609 if (!ep) {
1610 DPRINTF("xhci: slot %d has no device\n",
1611 xfer->epctx->slotid);
1612 return -1;
1613 }
1614 }
1615
1616 xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */
1617 usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid,
1618 xfer->trbs[0].addr, false, xfer->int_req);
1619 if (usb_packet_map(&xfer->packet, &xfer->sgl)) {
1620 qemu_sglist_destroy(&xfer->sgl);
1621 return -1;
1622 }
1623 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
1624 xfer->packet.pid, ep->dev->addr, ep->nr);
1625 return 0;
1626 }
1627
1628 static int xhci_try_complete_packet(XHCITransfer *xfer)
1629 {
1630 if (xfer->packet.status == USB_RET_ASYNC) {
1631 trace_usb_xhci_xfer_async(xfer);
1632 xfer->running_async = 1;
1633 xfer->running_retry = 0;
1634 xfer->complete = 0;
1635 return 0;
1636 } else if (xfer->packet.status == USB_RET_NAK) {
1637 trace_usb_xhci_xfer_nak(xfer);
1638 xfer->running_async = 0;
1639 xfer->running_retry = 1;
1640 xfer->complete = 0;
1641 return 0;
1642 } else {
1643 xfer->running_async = 0;
1644 xfer->running_retry = 0;
1645 xfer->complete = 1;
1646 xhci_xfer_unmap(xfer);
1647 }
1648
1649 if (xfer->packet.status == USB_RET_SUCCESS) {
1650 trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length);
1651 xfer->status = CC_SUCCESS;
1652 xhci_xfer_report(xfer);
1653 return 0;
1654 }
1655
1656 /* error */
1657 trace_usb_xhci_xfer_error(xfer, xfer->packet.status);
1658 switch (xfer->packet.status) {
1659 case USB_RET_NODEV:
1660 case USB_RET_IOERROR:
1661 xfer->status = CC_USB_TRANSACTION_ERROR;
1662 xhci_xfer_report(xfer);
1663 xhci_stall_ep(xfer);
1664 break;
1665 case USB_RET_STALL:
1666 xfer->status = CC_STALL_ERROR;
1667 xhci_xfer_report(xfer);
1668 xhci_stall_ep(xfer);
1669 break;
1670 case USB_RET_BABBLE:
1671 xfer->status = CC_BABBLE_DETECTED;
1672 xhci_xfer_report(xfer);
1673 xhci_stall_ep(xfer);
1674 break;
1675 default:
1676 DPRINTF("%s: FIXME: status = %d\n", __func__,
1677 xfer->packet.status);
1678 FIXME("unhandled USB_RET_*");
1679 }
1680 return 0;
1681 }
1682
1683 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
1684 {
1685 XHCITRB *trb_setup, *trb_status;
1686 uint8_t bmRequestType;
1687
1688 trb_setup = &xfer->trbs[0];
1689 trb_status = &xfer->trbs[xfer->trb_count-1];
1690
1691 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1692 xfer->epctx->epid, xfer->streamid);
1693
1694 /* at most one Event Data TRB allowed after STATUS */
1695 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) {
1696 trb_status--;
1697 }
1698
1699 /* do some sanity checks */
1700 if (TRB_TYPE(*trb_setup) != TR_SETUP) {
1701 DPRINTF("xhci: ep0 first TD not SETUP: %d\n",
1702 TRB_TYPE(*trb_setup));
1703 return -1;
1704 }
1705 if (TRB_TYPE(*trb_status) != TR_STATUS) {
1706 DPRINTF("xhci: ep0 last TD not STATUS: %d\n",
1707 TRB_TYPE(*trb_status));
1708 return -1;
1709 }
1710 if (!(trb_setup->control & TRB_TR_IDT)) {
1711 DPRINTF("xhci: Setup TRB doesn't have IDT set\n");
1712 return -1;
1713 }
1714 if ((trb_setup->status & 0x1ffff) != 8) {
1715 DPRINTF("xhci: Setup TRB has bad length (%d)\n",
1716 (trb_setup->status & 0x1ffff));
1717 return -1;
1718 }
1719
1720 bmRequestType = trb_setup->parameter;
1721
1722 xfer->in_xfer = bmRequestType & USB_DIR_IN;
1723 xfer->iso_xfer = false;
1724 xfer->timed_xfer = false;
1725
1726 if (xhci_setup_packet(xfer) < 0) {
1727 return -1;
1728 }
1729 xfer->packet.parameter = trb_setup->parameter;
1730
1731 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1732 xhci_try_complete_packet(xfer);
1733 return 0;
1734 }
1735
1736 static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer,
1737 XHCIEPContext *epctx, uint64_t mfindex)
1738 {
1739 uint64_t asap = ((mfindex + epctx->interval - 1) &
1740 ~(epctx->interval-1));
1741 uint64_t kick = epctx->mfindex_last + epctx->interval;
1742
1743 assert(epctx->interval != 0);
1744 xfer->mfindex_kick = MAX(asap, kick);
1745 }
1746
1747 static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1748 XHCIEPContext *epctx, uint64_t mfindex)
1749 {
1750 if (xfer->trbs[0].control & TRB_TR_SIA) {
1751 uint64_t asap = ((mfindex + epctx->interval - 1) &
1752 ~(epctx->interval-1));
1753 if (asap >= epctx->mfindex_last &&
1754 asap <= epctx->mfindex_last + epctx->interval * 4) {
1755 xfer->mfindex_kick = epctx->mfindex_last + epctx->interval;
1756 } else {
1757 xfer->mfindex_kick = asap;
1758 }
1759 } else {
1760 xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
1761 & TRB_TR_FRAMEID_MASK) << 3;
1762 xfer->mfindex_kick |= mfindex & ~0x3fff;
1763 if (xfer->mfindex_kick + 0x100 < mfindex) {
1764 xfer->mfindex_kick += 0x4000;
1765 }
1766 }
1767 }
1768
1769 static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1770 XHCIEPContext *epctx, uint64_t mfindex)
1771 {
1772 if (xfer->mfindex_kick > mfindex) {
1773 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1774 (xfer->mfindex_kick - mfindex) * 125000);
1775 xfer->running_retry = 1;
1776 } else {
1777 epctx->mfindex_last = xfer->mfindex_kick;
1778 timer_del(epctx->kick_timer);
1779 xfer->running_retry = 0;
1780 }
1781 }
1782
1783
1784 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1785 {
1786 uint64_t mfindex;
1787
1788 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", epctx->slotid, epctx->epid);
1789
1790 xfer->in_xfer = epctx->type>>2;
1791
1792 switch(epctx->type) {
1793 case ET_INTR_OUT:
1794 case ET_INTR_IN:
1795 xfer->pkts = 0;
1796 xfer->iso_xfer = false;
1797 xfer->timed_xfer = true;
1798 mfindex = xhci_mfindex_get(xhci);
1799 xhci_calc_intr_kick(xhci, xfer, epctx, mfindex);
1800 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1801 if (xfer->running_retry) {
1802 return -1;
1803 }
1804 break;
1805 case ET_BULK_OUT:
1806 case ET_BULK_IN:
1807 xfer->pkts = 0;
1808 xfer->iso_xfer = false;
1809 xfer->timed_xfer = false;
1810 break;
1811 case ET_ISO_OUT:
1812 case ET_ISO_IN:
1813 xfer->pkts = 1;
1814 xfer->iso_xfer = true;
1815 xfer->timed_xfer = true;
1816 mfindex = xhci_mfindex_get(xhci);
1817 xhci_calc_iso_kick(xhci, xfer, epctx, mfindex);
1818 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1819 if (xfer->running_retry) {
1820 return -1;
1821 }
1822 break;
1823 default:
1824 trace_usb_xhci_unimplemented("endpoint type", epctx->type);
1825 return -1;
1826 }
1827
1828 if (xhci_setup_packet(xfer) < 0) {
1829 return -1;
1830 }
1831 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1832 xhci_try_complete_packet(xfer);
1833 return 0;
1834 }
1835
1836 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1837 {
1838 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1839 xfer->epctx->epid, xfer->streamid);
1840 return xhci_submit(xhci, xfer, epctx);
1841 }
1842
1843 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
1844 unsigned int epid, unsigned int streamid)
1845 {
1846 XHCIEPContext *epctx;
1847
1848 assert(slotid >= 1 && slotid <= xhci->numslots);
1849 assert(epid >= 1 && epid <= 31);
1850
1851 if (!xhci->slots[slotid-1].enabled) {
1852 DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid);
1853 return;
1854 }
1855 epctx = xhci->slots[slotid-1].eps[epid-1];
1856 if (!epctx) {
1857 DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n",
1858 epid, slotid);
1859 return;
1860 }
1861
1862 if (epctx->kick_active) {
1863 return;
1864 }
1865 xhci_kick_epctx(epctx, streamid);
1866 }
1867
1868 static bool xhci_slot_ok(XHCIState *xhci, int slotid)
1869 {
1870 return (xhci->slots[slotid - 1].uport &&
1871 xhci->slots[slotid - 1].uport->dev &&
1872 xhci->slots[slotid - 1].uport->dev->attached);
1873 }
1874
1875 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid)
1876 {
1877 XHCIState *xhci = epctx->xhci;
1878 XHCIStreamContext *stctx = NULL;
1879 XHCITransfer *xfer;
1880 XHCIRing *ring;
1881 USBEndpoint *ep = NULL;
1882 uint64_t mfindex;
1883 unsigned int count = 0;
1884 int length;
1885 int i;
1886
1887 trace_usb_xhci_ep_kick(epctx->slotid, epctx->epid, streamid);
1888 assert(!epctx->kick_active);
1889
1890 /* If the device has been detached, but the guest has not noticed this
1891 yet the 2 above checks will succeed, but we must NOT continue */
1892 if (!xhci_slot_ok(xhci, epctx->slotid)) {
1893 return;
1894 }
1895
1896 if (epctx->retry) {
1897 xfer = epctx->retry;
1898
1899 trace_usb_xhci_xfer_retry(xfer);
1900 assert(xfer->running_retry);
1901 if (xfer->timed_xfer) {
1902 /* time to kick the transfer? */
1903 mfindex = xhci_mfindex_get(xhci);
1904 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1905 if (xfer->running_retry) {
1906 return;
1907 }
1908 xfer->timed_xfer = 0;
1909 xfer->running_retry = 1;
1910 }
1911 if (xfer->iso_xfer) {
1912 /* retry iso transfer */
1913 if (xhci_setup_packet(xfer) < 0) {
1914 return;
1915 }
1916 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1917 assert(xfer->packet.status != USB_RET_NAK);
1918 xhci_try_complete_packet(xfer);
1919 } else {
1920 /* retry nak'ed transfer */
1921 if (xhci_setup_packet(xfer) < 0) {
1922 return;
1923 }
1924 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1925 if (xfer->packet.status == USB_RET_NAK) {
1926 xhci_xfer_unmap(xfer);
1927 return;
1928 }
1929 xhci_try_complete_packet(xfer);
1930 }
1931 assert(!xfer->running_retry);
1932 if (xfer->complete) {
1933 /* update ring dequeue ptr */
1934 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
1935 xhci_ep_free_xfer(epctx->retry);
1936 }
1937 epctx->retry = NULL;
1938 }
1939
1940 if (epctx->state == EP_HALTED) {
1941 DPRINTF("xhci: ep halted, not running schedule\n");
1942 return;
1943 }
1944
1945
1946 if (epctx->nr_pstreams) {
1947 uint32_t err;
1948 stctx = xhci_find_stream(epctx, streamid, &err);
1949 if (stctx == NULL) {
1950 return;
1951 }
1952 ring = &stctx->ring;
1953 xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING);
1954 } else {
1955 ring = &epctx->ring;
1956 streamid = 0;
1957 xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING);
1958 }
1959 if (!ring->dequeue) {
1960 return;
1961 }
1962
1963 epctx->kick_active++;
1964 while (1) {
1965 length = xhci_ring_chain_length(xhci, ring);
1966 if (length <= 0) {
1967 if (epctx->type == ET_ISO_OUT || epctx->type == ET_ISO_IN) {
1968 /* 4.10.3.1 */
1969 XHCIEvent ev = { ER_TRANSFER };
1970 ev.ccode = epctx->type == ET_ISO_IN ?
1971 CC_RING_OVERRUN : CC_RING_UNDERRUN;
1972 ev.slotid = epctx->slotid;
1973 ev.epid = epctx->epid;
1974 ev.ptr = epctx->ring.dequeue;
1975 xhci_event(xhci, &ev, xhci->slots[epctx->slotid-1].intr);
1976 }
1977 break;
1978 }
1979 xfer = xhci_ep_alloc_xfer(epctx, length);
1980 if (xfer == NULL) {
1981 break;
1982 }
1983
1984 for (i = 0; i < length; i++) {
1985 TRBType type;
1986 type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL);
1987 if (!type) {
1988 xhci_die(xhci);
1989 xhci_ep_free_xfer(xfer);
1990 epctx->kick_active--;
1991 return;
1992 }
1993 }
1994 xfer->streamid = streamid;
1995
1996 if (epctx->epid == 1) {
1997 xhci_fire_ctl_transfer(xhci, xfer);
1998 } else {
1999 xhci_fire_transfer(xhci, xfer, epctx);
2000 }
2001 if (!xhci_slot_ok(xhci, epctx->slotid)) {
2002 /* surprise removal -> stop processing */
2003 break;
2004 }
2005 if (xfer->complete) {
2006 /* update ring dequeue ptr */
2007 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
2008 xhci_ep_free_xfer(xfer);
2009 xfer = NULL;
2010 }
2011
2012 if (epctx->state == EP_HALTED) {
2013 break;
2014 }
2015 if (xfer != NULL && xfer->running_retry) {
2016 DPRINTF("xhci: xfer nacked, stopping schedule\n");
2017 epctx->retry = xfer;
2018 xhci_xfer_unmap(xfer);
2019 break;
2020 }
2021 if (count++ > TRANSFER_LIMIT) {
2022 trace_usb_xhci_enforced_limit("transfers");
2023 break;
2024 }
2025 }
2026 epctx->kick_active--;
2027
2028 ep = xhci_epid_to_usbep(epctx);
2029 if (ep) {
2030 usb_device_flush_ep_queue(ep->dev, ep);
2031 }
2032 }
2033
2034 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid)
2035 {
2036 trace_usb_xhci_slot_enable(slotid);
2037 assert(slotid >= 1 && slotid <= xhci->numslots);
2038 xhci->slots[slotid-1].enabled = 1;
2039 xhci->slots[slotid-1].uport = NULL;
2040 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31);
2041
2042 return CC_SUCCESS;
2043 }
2044
2045 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid)
2046 {
2047 int i;
2048
2049 trace_usb_xhci_slot_disable(slotid);
2050 assert(slotid >= 1 && slotid <= xhci->numslots);
2051
2052 for (i = 1; i <= 31; i++) {
2053 if (xhci->slots[slotid-1].eps[i-1]) {
2054 xhci_disable_ep(xhci, slotid, i);
2055 }
2056 }
2057
2058 xhci->slots[slotid-1].enabled = 0;
2059 xhci->slots[slotid-1].addressed = 0;
2060 xhci->slots[slotid-1].uport = NULL;
2061 xhci->slots[slotid-1].intr = 0;
2062 return CC_SUCCESS;
2063 }
2064
2065 static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx)
2066 {
2067 USBPort *uport;
2068 char path[32];
2069 int i, pos, port;
2070
2071 port = (slot_ctx[1]>>16) & 0xFF;
2072 if (port < 1 || port > xhci->numports) {
2073 return NULL;
2074 }
2075 port = xhci->ports[port-1].uport->index+1;
2076 pos = snprintf(path, sizeof(path), "%d", port);
2077 for (i = 0; i < 5; i++) {
2078 port = (slot_ctx[0] >> 4*i) & 0x0f;
2079 if (!port) {
2080 break;
2081 }
2082 pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port);
2083 }
2084
2085 QTAILQ_FOREACH(uport, &xhci->bus.used, next) {
2086 if (strcmp(uport->path, path) == 0) {
2087 return uport;
2088 }
2089 }
2090 return NULL;
2091 }
2092
2093 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
2094 uint64_t pictx, bool bsr)
2095 {
2096 XHCISlot *slot;
2097 USBPort *uport;
2098 USBDevice *dev;
2099 dma_addr_t ictx, octx, dcbaap;
2100 uint64_t poctx;
2101 uint32_t ictl_ctx[2];
2102 uint32_t slot_ctx[4];
2103 uint32_t ep0_ctx[5];
2104 int i;
2105 TRBCCode res;
2106
2107 assert(slotid >= 1 && slotid <= xhci->numslots);
2108
2109 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
2110 ldq_le_dma(xhci->as, dcbaap + 8 * slotid, &poctx, MEMTXATTRS_UNSPECIFIED);
2111 ictx = xhci_mask64(pictx);
2112 octx = xhci_mask64(poctx);
2113
2114 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2115 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2116
2117 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2118
2119 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) {
2120 DPRINTF("xhci: invalid input context control %08x %08x\n",
2121 ictl_ctx[0], ictl_ctx[1]);
2122 return CC_TRB_ERROR;
2123 }
2124
2125 xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx));
2126 xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx));
2127
2128 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2129 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2130
2131 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2132 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2133
2134 uport = xhci_lookup_uport(xhci, slot_ctx);
2135 if (uport == NULL) {
2136 DPRINTF("xhci: port not found\n");
2137 return CC_TRB_ERROR;
2138 }
2139 trace_usb_xhci_slot_address(slotid, uport->path);
2140
2141 dev = uport->dev;
2142 if (!dev || !dev->attached) {
2143 DPRINTF("xhci: port %s not connected\n", uport->path);
2144 return CC_USB_TRANSACTION_ERROR;
2145 }
2146
2147 for (i = 0; i < xhci->numslots; i++) {
2148 if (i == slotid-1) {
2149 continue;
2150 }
2151 if (xhci->slots[i].uport == uport) {
2152 DPRINTF("xhci: port %s already assigned to slot %d\n",
2153 uport->path, i+1);
2154 return CC_TRB_ERROR;
2155 }
2156 }
2157
2158 slot = &xhci->slots[slotid-1];
2159 slot->uport = uport;
2160 slot->ctx = octx;
2161 slot->intr = get_field(slot_ctx[2], TRB_INTR);
2162
2163 /* Make sure device is in USB_STATE_DEFAULT state */
2164 usb_device_reset(dev);
2165 if (bsr) {
2166 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT;
2167 } else {
2168 USBPacket p;
2169 uint8_t buf[1];
2170
2171 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid;
2172 memset(&p, 0, sizeof(p));
2173 usb_packet_addbuf(&p, buf, sizeof(buf));
2174 usb_packet_setup(&p, USB_TOKEN_OUT,
2175 usb_ep_get(dev, USB_TOKEN_OUT, 0), 0,
2176 0, false, false);
2177 usb_device_handle_control(dev, &p,
2178 DeviceOutRequest | USB_REQ_SET_ADDRESS,
2179 slotid, 0, 0, NULL);
2180 assert(p.status != USB_RET_ASYNC);
2181 usb_packet_cleanup(&p);
2182 }
2183
2184 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx);
2185
2186 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2187 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2188 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2189 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2190
2191 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2192 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2193
2194 xhci->slots[slotid-1].addressed = 1;
2195 return res;
2196 }
2197
2198
2199 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid,
2200 uint64_t pictx, bool dc)
2201 {
2202 dma_addr_t ictx, octx;
2203 uint32_t ictl_ctx[2];
2204 uint32_t slot_ctx[4];
2205 uint32_t islot_ctx[4];
2206 uint32_t ep_ctx[5];
2207 int i;
2208 TRBCCode res;
2209
2210 trace_usb_xhci_slot_configure(slotid);
2211 assert(slotid >= 1 && slotid <= xhci->numslots);
2212
2213 ictx = xhci_mask64(pictx);
2214 octx = xhci->slots[slotid-1].ctx;
2215
2216 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2217 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2218
2219 if (dc) {
2220 for (i = 2; i <= 31; i++) {
2221 if (xhci->slots[slotid-1].eps[i-1]) {
2222 xhci_disable_ep(xhci, slotid, i);
2223 }
2224 }
2225
2226 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2227 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2228 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT;
2229 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2230 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2231 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2232
2233 return CC_SUCCESS;
2234 }
2235
2236 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2237
2238 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) {
2239 DPRINTF("xhci: invalid input context control %08x %08x\n",
2240 ictl_ctx[0], ictl_ctx[1]);
2241 return CC_TRB_ERROR;
2242 }
2243
2244 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2245 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2246
2247 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) {
2248 DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]);
2249 return CC_CONTEXT_STATE_ERROR;
2250 }
2251
2252 xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]);
2253
2254 for (i = 2; i <= 31; i++) {
2255 if (ictl_ctx[0] & (1<<i)) {
2256 xhci_disable_ep(xhci, slotid, i);
2257 }
2258 if (ictl_ctx[1] & (1<<i)) {
2259 xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx));
2260 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n",
2261 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2262 ep_ctx[3], ep_ctx[4]);
2263 xhci_disable_ep(xhci, slotid, i);
2264 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx);
2265 if (res != CC_SUCCESS) {
2266 return res;
2267 }
2268 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n",
2269 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2270 ep_ctx[3], ep_ctx[4]);
2271 xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx));
2272 }
2273 }
2274
2275 res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]);
2276 if (res != CC_SUCCESS) {
2277 for (i = 2; i <= 31; i++) {
2278 if (ictl_ctx[1] & (1u << i)) {
2279 xhci_disable_ep(xhci, slotid, i);
2280 }
2281 }
2282 return res;
2283 }
2284
2285 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2286 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT;
2287 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT);
2288 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK <<
2289 SLOT_CONTEXT_ENTRIES_SHIFT);
2290 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2291 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2292
2293 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2294
2295 return CC_SUCCESS;
2296 }
2297
2298
2299 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid,
2300 uint64_t pictx)
2301 {
2302 dma_addr_t ictx, octx;
2303 uint32_t ictl_ctx[2];
2304 uint32_t iep0_ctx[5];
2305 uint32_t ep0_ctx[5];
2306 uint32_t islot_ctx[4];
2307 uint32_t slot_ctx[4];
2308
2309 trace_usb_xhci_slot_evaluate(slotid);
2310 assert(slotid >= 1 && slotid <= xhci->numslots);
2311
2312 ictx = xhci_mask64(pictx);
2313 octx = xhci->slots[slotid-1].ctx;
2314
2315 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2316 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2317
2318 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2319
2320 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) {
2321 DPRINTF("xhci: invalid input context control %08x %08x\n",
2322 ictl_ctx[0], ictl_ctx[1]);
2323 return CC_TRB_ERROR;
2324 }
2325
2326 if (ictl_ctx[1] & 0x1) {
2327 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2328
2329 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2330 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]);
2331
2332 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2333
2334 slot_ctx[1] &= ~0xFFFF; /* max exit latency */
2335 slot_ctx[1] |= islot_ctx[1] & 0xFFFF;
2336 /* update interrupter target field */
2337 xhci->slots[slotid-1].intr = get_field(islot_ctx[2], TRB_INTR);
2338 set_field(&slot_ctx[2], xhci->slots[slotid-1].intr, TRB_INTR);
2339
2340 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2341 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2342
2343 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2344 }
2345
2346 if (ictl_ctx[1] & 0x2) {
2347 xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx));
2348
2349 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2350 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2],
2351 iep0_ctx[3], iep0_ctx[4]);
2352
2353 xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2354
2355 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/
2356 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000;
2357
2358 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2359 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2360
2361 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2362 }
2363
2364 return CC_SUCCESS;
2365 }
2366
2367 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid)
2368 {
2369 uint32_t slot_ctx[4];
2370 dma_addr_t octx;
2371 int i;
2372
2373 trace_usb_xhci_slot_reset(slotid);
2374 assert(slotid >= 1 && slotid <= xhci->numslots);
2375
2376 octx = xhci->slots[slotid-1].ctx;
2377
2378 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2379
2380 for (i = 2; i <= 31; i++) {
2381 if (xhci->slots[slotid-1].eps[i-1]) {
2382 xhci_disable_ep(xhci, slotid, i);
2383 }
2384 }
2385
2386 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2387 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2388 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT;
2389 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2390 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2391 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2392
2393 return CC_SUCCESS;
2394 }
2395
2396 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb)
2397 {
2398 unsigned int slotid;
2399 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK;
2400 if (slotid < 1 || slotid > xhci->numslots) {
2401 DPRINTF("xhci: bad slot id %d\n", slotid);
2402 event->ccode = CC_TRB_ERROR;
2403 return 0;
2404 } else if (!xhci->slots[slotid-1].enabled) {
2405 DPRINTF("xhci: slot id %d not enabled\n", slotid);
2406 event->ccode = CC_SLOT_NOT_ENABLED_ERROR;
2407 return 0;
2408 }
2409 return slotid;
2410 }
2411
2412 /* cleanup slot state on usb device detach */
2413 static void xhci_detach_slot(XHCIState *xhci, USBPort *uport)
2414 {
2415 int slot, ep;
2416
2417 for (slot = 0; slot < xhci->numslots; slot++) {
2418 if (xhci->slots[slot].uport == uport) {
2419 break;
2420 }
2421 }
2422 if (slot == xhci->numslots) {
2423 return;
2424 }
2425
2426 for (ep = 0; ep < 31; ep++) {
2427 if (xhci->slots[slot].eps[ep]) {
2428 xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0);
2429 }
2430 }
2431 xhci->slots[slot].uport = NULL;
2432 }
2433
2434 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx)
2435 {
2436 dma_addr_t ctx;
2437
2438 DPRINTF("xhci_get_port_bandwidth()\n");
2439
2440 ctx = xhci_mask64(pctx);
2441
2442 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx);
2443
2444 /* TODO: actually implement real values here. This is 80% for all ports. */
2445 if (stb_dma(xhci->as, ctx, 0, MEMTXATTRS_UNSPECIFIED) != MEMTX_OK ||
2446 dma_memory_set(xhci->as, ctx + 1, 80, xhci->numports,
2447 MEMTXATTRS_UNSPECIFIED) != MEMTX_OK) {
2448 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA memory write failed!\n",
2449 __func__);
2450 return CC_TRB_ERROR;
2451 }
2452
2453 return CC_SUCCESS;
2454 }
2455
2456 static uint32_t rotl(uint32_t v, unsigned count)
2457 {
2458 count &= 31;
2459 return (v << count) | (v >> (32 - count));
2460 }
2461
2462
2463 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo)
2464 {
2465 uint32_t val;
2466 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F));
2467 val += rotl(lo + 0x49434878, hi & 0x1F);
2468 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F);
2469 return ~val;
2470 }
2471
2472 static void xhci_process_commands(XHCIState *xhci)
2473 {
2474 XHCITRB trb;
2475 TRBType type;
2476 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS};
2477 dma_addr_t addr;
2478 unsigned int i, slotid = 0, count = 0;
2479
2480 DPRINTF("xhci_process_commands()\n");
2481 if (!xhci_running(xhci)) {
2482 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n");
2483 return;
2484 }
2485
2486 xhci->crcr_low |= CRCR_CRR;
2487
2488 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) {
2489 event.ptr = addr;
2490 switch (type) {
2491 case CR_ENABLE_SLOT:
2492 for (i = 0; i < xhci->numslots; i++) {
2493 if (!xhci->slots[i].enabled) {
2494 break;
2495 }
2496 }
2497 if (i >= xhci->numslots) {
2498 DPRINTF("xhci: no device slots available\n");
2499 event.ccode = CC_NO_SLOTS_ERROR;
2500 } else {
2501 slotid = i+1;
2502 event.ccode = xhci_enable_slot(xhci, slotid);
2503 }
2504 break;
2505 case CR_DISABLE_SLOT:
2506 slotid = xhci_get_slot(xhci, &event, &trb);
2507 if (slotid) {
2508 event.ccode = xhci_disable_slot(xhci, slotid);
2509 }
2510 break;
2511 case CR_ADDRESS_DEVICE:
2512 slotid = xhci_get_slot(xhci, &event, &trb);
2513 if (slotid) {
2514 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter,
2515 trb.control & TRB_CR_BSR);
2516 }
2517 break;
2518 case CR_CONFIGURE_ENDPOINT:
2519 slotid = xhci_get_slot(xhci, &event, &trb);
2520 if (slotid) {
2521 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter,
2522 trb.control & TRB_CR_DC);
2523 }
2524 break;
2525 case CR_EVALUATE_CONTEXT:
2526 slotid = xhci_get_slot(xhci, &event, &trb);
2527 if (slotid) {
2528 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter);
2529 }
2530 break;
2531 case CR_STOP_ENDPOINT:
2532 slotid = xhci_get_slot(xhci, &event, &trb);
2533 if (slotid) {
2534 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2535 & TRB_CR_EPID_MASK;
2536 event.ccode = xhci_stop_ep(xhci, slotid, epid);
2537 }
2538 break;
2539 case CR_RESET_ENDPOINT:
2540 slotid = xhci_get_slot(xhci, &event, &trb);
2541 if (slotid) {
2542 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2543 & TRB_CR_EPID_MASK;
2544 event.ccode = xhci_reset_ep(xhci, slotid, epid);
2545 }
2546 break;
2547 case CR_SET_TR_DEQUEUE:
2548 slotid = xhci_get_slot(xhci, &event, &trb);
2549 if (slotid) {
2550 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2551 & TRB_CR_EPID_MASK;
2552 unsigned int streamid = (trb.status >> 16) & 0xffff;
2553 event.ccode = xhci_set_ep_dequeue(xhci, slotid,
2554 epid, streamid,
2555 trb.parameter);
2556 }
2557 break;
2558 case CR_RESET_DEVICE:
2559 slotid = xhci_get_slot(xhci, &event, &trb);
2560 if (slotid) {
2561 event.ccode = xhci_reset_slot(xhci, slotid);
2562 }
2563 break;
2564 case CR_GET_PORT_BANDWIDTH:
2565 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter);
2566 break;
2567 case CR_NOOP:
2568 event.ccode = CC_SUCCESS;
2569 break;
2570 case CR_VENDOR_NEC_FIRMWARE_REVISION:
2571 if (xhci->nec_quirks) {
2572 event.type = 48; /* NEC reply */
2573 event.length = 0x3034;
2574 } else {
2575 event.ccode = CC_TRB_ERROR;
2576 }
2577 break;
2578 case CR_VENDOR_NEC_CHALLENGE_RESPONSE:
2579 if (xhci->nec_quirks) {
2580 uint32_t chi = trb.parameter >> 32;
2581 uint32_t clo = trb.parameter;
2582 uint32_t val = xhci_nec_challenge(chi, clo);
2583 event.length = val & 0xFFFF;
2584 event.epid = val >> 16;
2585 slotid = val >> 24;
2586 event.type = 48; /* NEC reply */
2587 } else {
2588 event.ccode = CC_TRB_ERROR;
2589 }
2590 break;
2591 default:
2592 trace_usb_xhci_unimplemented("command", type);
2593 event.ccode = CC_TRB_ERROR;
2594 break;
2595 }
2596 event.slotid = slotid;
2597 xhci_event(xhci, &event, 0);
2598
2599 if (count++ > COMMAND_LIMIT) {
2600 trace_usb_xhci_enforced_limit("commands");
2601 return;
2602 }
2603 }
2604 }
2605
2606 static bool xhci_port_have_device(XHCIPort *port)
2607 {
2608 if (!port->uport->dev || !port->uport->dev->attached) {
2609 return false; /* no device present */
2610 }
2611 if (!((1 << port->uport->dev->speed) & port->speedmask)) {
2612 return false; /* speed mismatch */
2613 }
2614 return true;
2615 }
2616
2617 static void xhci_port_notify(XHCIPort *port, uint32_t bits)
2618 {
2619 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
2620 port->portnr << 24 };
2621
2622 if ((port->portsc & bits) == bits) {
2623 return;
2624 }
2625 trace_usb_xhci_port_notify(port->portnr, bits);
2626 port->portsc |= bits;
2627 if (!xhci_running(port->xhci)) {
2628 return;
2629 }
2630 xhci_event(port->xhci, &ev, 0);
2631 }
2632
2633 static void xhci_port_update(XHCIPort *port, int is_detach)
2634 {
2635 uint32_t pls = PLS_RX_DETECT;
2636
2637 assert(port);
2638 port->portsc = PORTSC_PP;
2639 if (!is_detach && xhci_port_have_device(port)) {
2640 port->portsc |= PORTSC_CCS;
2641 switch (port->uport->dev->speed) {
2642 case USB_SPEED_LOW:
2643 port->portsc |= PORTSC_SPEED_LOW;
2644 pls = PLS_POLLING;
2645 break;
2646 case USB_SPEED_FULL:
2647 port->portsc |= PORTSC_SPEED_FULL;
2648 pls = PLS_POLLING;
2649 break;
2650 case USB_SPEED_HIGH:
2651 port->portsc |= PORTSC_SPEED_HIGH;
2652 pls = PLS_POLLING;
2653 break;
2654 case USB_SPEED_SUPER:
2655 port->portsc |= PORTSC_SPEED_SUPER;
2656 port->portsc |= PORTSC_PED;
2657 pls = PLS_U0;
2658 break;
2659 }
2660 }
2661 set_field(&port->portsc, pls, PORTSC_PLS);
2662 trace_usb_xhci_port_link(port->portnr, pls);
2663 xhci_port_notify(port, PORTSC_CSC);
2664 }
2665
2666 static void xhci_port_reset(XHCIPort *port, bool warm_reset)
2667 {
2668 trace_usb_xhci_port_reset(port->portnr, warm_reset);
2669
2670 if (!xhci_port_have_device(port)) {
2671 return;
2672 }
2673
2674 usb_device_reset(port->uport->dev);
2675
2676 switch (port->uport->dev->speed) {
2677 case USB_SPEED_SUPER:
2678 if (warm_reset) {
2679 port->portsc |= PORTSC_WRC;
2680 }
2681 /* fall through */
2682 case USB_SPEED_LOW:
2683 case USB_SPEED_FULL:
2684 case USB_SPEED_HIGH:
2685 set_field(&port->portsc, PLS_U0, PORTSC_PLS);
2686 trace_usb_xhci_port_link(port->portnr, PLS_U0);
2687 port->portsc |= PORTSC_PED;
2688 break;
2689 }
2690
2691 port->portsc &= ~PORTSC_PR;
2692 xhci_port_notify(port, PORTSC_PRC);
2693 }
2694
2695 static void xhci_reset(DeviceState *dev)
2696 {
2697 XHCIState *xhci = XHCI(dev);
2698 int i;
2699
2700 trace_usb_xhci_reset();
2701 if (!(xhci->usbsts & USBSTS_HCH)) {
2702 DPRINTF("xhci: reset while running!\n");
2703 }
2704
2705 xhci->usbcmd = 0;
2706 xhci->usbsts = USBSTS_HCH;
2707 xhci->dnctrl = 0;
2708 xhci->crcr_low = 0;
2709 xhci->crcr_high = 0;
2710 xhci->dcbaap_low = 0;
2711 xhci->dcbaap_high = 0;
2712 xhci->config = 0;
2713
2714 for (i = 0; i < xhci->numslots; i++) {
2715 xhci_disable_slot(xhci, i+1);
2716 }
2717
2718 for (i = 0; i < xhci->numports; i++) {
2719 xhci_port_update(xhci->ports + i, 0);
2720 }
2721
2722 for (i = 0; i < xhci->numintrs; i++) {
2723 xhci->intr[i].iman = 0;
2724 xhci->intr[i].imod = 0;
2725 xhci->intr[i].erstsz = 0;
2726 xhci->intr[i].erstba_low = 0;
2727 xhci->intr[i].erstba_high = 0;
2728 xhci->intr[i].erdp_low = 0;
2729 xhci->intr[i].erdp_high = 0;
2730
2731 xhci->intr[i].er_ep_idx = 0;
2732 xhci->intr[i].er_pcs = 1;
2733 xhci->intr[i].ev_buffer_put = 0;
2734 xhci->intr[i].ev_buffer_get = 0;
2735 }
2736
2737 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2738 xhci_mfwrap_update(xhci);
2739 }
2740
2741 static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size)
2742 {
2743 XHCIState *xhci = ptr;
2744 uint32_t ret;
2745
2746 switch (reg) {
2747 case 0x00: /* HCIVERSION, CAPLENGTH */
2748 ret = 0x01000000 | LEN_CAP;
2749 break;
2750 case 0x04: /* HCSPARAMS 1 */
2751 ret = ((xhci->numports_2+xhci->numports_3)<<24)
2752 | (xhci->numintrs<<8) | xhci->numslots;
2753 break;
2754 case 0x08: /* HCSPARAMS 2 */
2755 ret = 0x0000000f;
2756 break;
2757 case 0x0c: /* HCSPARAMS 3 */
2758 ret = 0x00000000;
2759 break;
2760 case 0x10: /* HCCPARAMS */
2761 if (sizeof(dma_addr_t) == 4) {
2762 ret = 0x00080000 | (xhci->max_pstreams_mask << 12);
2763 } else {
2764 ret = 0x00080001 | (xhci->max_pstreams_mask << 12);
2765 }
2766 break;
2767 case 0x14: /* DBOFF */
2768 ret = OFF_DOORBELL;
2769 break;
2770 case 0x18: /* RTSOFF */
2771 ret = OFF_RUNTIME;
2772 break;
2773
2774 /* extended capabilities */
2775 case 0x20: /* Supported Protocol:00 */
2776 ret = 0x02000402; /* USB 2.0 */
2777 break;
2778 case 0x24: /* Supported Protocol:04 */
2779 ret = 0x20425355; /* "USB " */
2780 break;
2781 case 0x28: /* Supported Protocol:08 */
2782 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2783 ret = (xhci->numports_2<<8) | (xhci->numports_3+1);
2784 } else {
2785 ret = (xhci->numports_2<<8) | 1;
2786 }
2787 break;
2788 case 0x2c: /* Supported Protocol:0c */
2789 ret = 0x00000000; /* reserved */
2790 break;
2791 case 0x30: /* Supported Protocol:00 */
2792 ret = 0x03000002; /* USB 3.0 */
2793 break;
2794 case 0x34: /* Supported Protocol:04 */
2795 ret = 0x20425355; /* "USB " */
2796 break;
2797 case 0x38: /* Supported Protocol:08 */
2798 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2799 ret = (xhci->numports_3<<8) | 1;
2800 } else {
2801 ret = (xhci->numports_3<<8) | (xhci->numports_2+1);
2802 }
2803 break;
2804 case 0x3c: /* Supported Protocol:0c */
2805 ret = 0x00000000; /* reserved */
2806 break;
2807 default:
2808 trace_usb_xhci_unimplemented("cap read", reg);
2809 ret = 0;
2810 }
2811
2812 trace_usb_xhci_cap_read(reg, ret);
2813 return ret;
2814 }
2815
2816 static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size)
2817 {
2818 XHCIPort *port = ptr;
2819 uint32_t ret;
2820
2821 switch (reg) {
2822 case 0x00: /* PORTSC */
2823 ret = port->portsc;
2824 break;
2825 case 0x04: /* PORTPMSC */
2826 case 0x08: /* PORTLI */
2827 ret = 0;
2828 break;
2829 case 0x0c: /* reserved */
2830 default:
2831 trace_usb_xhci_unimplemented("port read", reg);
2832 ret = 0;
2833 }
2834
2835 trace_usb_xhci_port_read(port->portnr, reg, ret);
2836 return ret;
2837 }
2838
2839 static void xhci_port_write(void *ptr, hwaddr reg,
2840 uint64_t val, unsigned size)
2841 {
2842 XHCIPort *port = ptr;
2843 uint32_t portsc, notify;
2844
2845 trace_usb_xhci_port_write(port->portnr, reg, val);
2846
2847 switch (reg) {
2848 case 0x00: /* PORTSC */
2849 /* write-1-to-start bits */
2850 if (val & PORTSC_WPR) {
2851 xhci_port_reset(port, true);
2852 break;
2853 }
2854 if (val & PORTSC_PR) {
2855 xhci_port_reset(port, false);
2856 break;
2857 }
2858
2859 portsc = port->portsc;
2860 notify = 0;
2861 /* write-1-to-clear bits*/
2862 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC|
2863 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
2864 if (val & PORTSC_LWS) {
2865 /* overwrite PLS only when LWS=1 */
2866 uint32_t old_pls = get_field(port->portsc, PORTSC_PLS);
2867 uint32_t new_pls = get_field(val, PORTSC_PLS);
2868 switch (new_pls) {
2869 case PLS_U0:
2870 if (old_pls != PLS_U0) {
2871 set_field(&portsc, new_pls, PORTSC_PLS);
2872 trace_usb_xhci_port_link(port->portnr, new_pls);
2873 notify = PORTSC_PLC;
2874 }
2875 break;
2876 case PLS_U3:
2877 if (old_pls < PLS_U3) {
2878 set_field(&portsc, new_pls, PORTSC_PLS);
2879 trace_usb_xhci_port_link(port->portnr, new_pls);
2880 }
2881 break;
2882 case PLS_RESUME:
2883 /* windows does this for some reason, don't spam stderr */
2884 break;
2885 default:
2886 DPRINTF("%s: ignore pls write (old %d, new %d)\n",
2887 __func__, old_pls, new_pls);
2888 break;
2889 }
2890 }
2891 /* read/write bits */
2892 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
2893 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE));
2894 port->portsc = portsc;
2895 if (notify) {
2896 xhci_port_notify(port, notify);
2897 }
2898 break;
2899 case 0x04: /* PORTPMSC */
2900 case 0x08: /* PORTLI */
2901 default:
2902 trace_usb_xhci_unimplemented("port write", reg);
2903 }
2904 }
2905
2906 static uint64_t xhci_oper_read(void *ptr, hwaddr reg, unsigned size)
2907 {
2908 XHCIState *xhci = ptr;
2909 uint32_t ret;
2910
2911 switch (reg) {
2912 case 0x00: /* USBCMD */
2913 ret = xhci->usbcmd;
2914 break;
2915 case 0x04: /* USBSTS */
2916 ret = xhci->usbsts;
2917 break;
2918 case 0x08: /* PAGESIZE */
2919 ret = 1; /* 4KiB */
2920 break;
2921 case 0x14: /* DNCTRL */
2922 ret = xhci->dnctrl;
2923 break;
2924 case 0x18: /* CRCR low */
2925 ret = xhci->crcr_low & ~0xe;
2926 break;
2927 case 0x1c: /* CRCR high */
2928 ret = xhci->crcr_high;
2929 break;
2930 case 0x30: /* DCBAAP low */
2931 ret = xhci->dcbaap_low;
2932 break;
2933 case 0x34: /* DCBAAP high */
2934 ret = xhci->dcbaap_high;
2935 break;
2936 case 0x38: /* CONFIG */
2937 ret = xhci->config;
2938 break;
2939 default:
2940 trace_usb_xhci_unimplemented("oper read", reg);
2941 ret = 0;
2942 }
2943
2944 trace_usb_xhci_oper_read(reg, ret);
2945 return ret;
2946 }
2947
2948 static void xhci_oper_write(void *ptr, hwaddr reg,
2949 uint64_t val, unsigned size)
2950 {
2951 XHCIState *xhci = XHCI(ptr);
2952
2953 trace_usb_xhci_oper_write(reg, val);
2954
2955 switch (reg) {
2956 case 0x00: /* USBCMD */
2957 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) {
2958 xhci_run(xhci);
2959 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) {
2960 xhci_stop(xhci);
2961 }
2962 if (val & USBCMD_CSS) {
2963 /* save state */
2964 xhci->usbsts &= ~USBSTS_SRE;
2965 }
2966 if (val & USBCMD_CRS) {
2967 /* restore state */
2968 xhci->usbsts |= USBSTS_SRE;
2969 }
2970 xhci->usbcmd = val & 0xc0f;
2971 xhci_mfwrap_update(xhci);
2972 if (val & USBCMD_HCRST) {
2973 xhci_reset(DEVICE(xhci));
2974 }
2975 xhci_intr_update(xhci, 0);
2976 break;
2977
2978 case 0x04: /* USBSTS */
2979 /* these bits are write-1-to-clear */
2980 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE));
2981 xhci_intr_update(xhci, 0);
2982 break;
2983
2984 case 0x14: /* DNCTRL */
2985 xhci->dnctrl = val & 0xffff;
2986 break;
2987 case 0x18: /* CRCR low */
2988 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR);
2989 break;
2990 case 0x1c: /* CRCR high */
2991 xhci->crcr_high = val;
2992 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) {
2993 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED};
2994 xhci->crcr_low &= ~CRCR_CRR;
2995 xhci_event(xhci, &event, 0);
2996 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low);
2997 } else {
2998 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val);
2999 xhci_ring_init(xhci, &xhci->cmd_ring, base);
3000 }
3001 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS);
3002 break;
3003 case 0x30: /* DCBAAP low */
3004 xhci->dcbaap_low = val & 0xffffffc0;
3005 break;
3006 case 0x34: /* DCBAAP high */
3007 xhci->dcbaap_high = val;
3008 break;
3009 case 0x38: /* CONFIG */
3010 xhci->config = val & 0xff;
3011 break;
3012 default:
3013 trace_usb_xhci_unimplemented("oper write", reg);
3014 }
3015 }
3016
3017 static uint64_t xhci_runtime_read(void *ptr, hwaddr reg,
3018 unsigned size)
3019 {
3020 XHCIState *xhci = ptr;
3021 uint32_t ret = 0;
3022
3023 if (reg < 0x20) {
3024 switch (reg) {
3025 case 0x00: /* MFINDEX */
3026 ret = xhci_mfindex_get(xhci) & 0x3fff;
3027 break;
3028 default:
3029 trace_usb_xhci_unimplemented("runtime read", reg);
3030 break;
3031 }
3032 } else {
3033 int v = (reg - 0x20) / 0x20;
3034 XHCIInterrupter *intr = &xhci->intr[v];
3035 switch (reg & 0x1f) {
3036 case 0x00: /* IMAN */
3037 ret = intr->iman;
3038 break;
3039 case 0x04: /* IMOD */
3040 ret = intr->imod;
3041 break;
3042 case 0x08: /* ERSTSZ */
3043 ret = intr->erstsz;
3044 break;
3045 case 0x10: /* ERSTBA low */
3046 ret = intr->erstba_low;
3047 break;
3048 case 0x14: /* ERSTBA high */
3049 ret = intr->erstba_high;
3050 break;
3051 case 0x18: /* ERDP low */
3052 ret = intr->erdp_low;
3053 break;
3054 case 0x1c: /* ERDP high */
3055 ret = intr->erdp_high;
3056 break;
3057 }
3058 }
3059
3060 trace_usb_xhci_runtime_read(reg, ret);
3061 return ret;
3062 }
3063
3064 static void xhci_runtime_write(void *ptr, hwaddr reg,
3065 uint64_t val, unsigned size)
3066 {
3067 XHCIState *xhci = ptr;
3068 XHCIInterrupter *intr;
3069 int v;
3070
3071 trace_usb_xhci_runtime_write(reg, val);
3072
3073 if (reg < 0x20) {
3074 trace_usb_xhci_unimplemented("runtime write", reg);
3075 return;
3076 }
3077 v = (reg - 0x20) / 0x20;
3078 intr = &xhci->intr[v];
3079
3080 switch (reg & 0x1f) {
3081 case 0x00: /* IMAN */
3082 if (val & IMAN_IP) {
3083 intr->iman &= ~IMAN_IP;
3084 }
3085 intr->iman &= ~IMAN_IE;
3086 intr->iman |= val & IMAN_IE;
3087 xhci_intr_update(xhci, v);
3088 break;
3089 case 0x04: /* IMOD */
3090 intr->imod = val;
3091 break;
3092 case 0x08: /* ERSTSZ */
3093 intr->erstsz = val & 0xffff;
3094 break;
3095 case 0x10: /* ERSTBA low */
3096 if (xhci->nec_quirks) {
3097 /* NEC driver bug: it doesn't align this to 64 bytes */
3098 intr->erstba_low = val & 0xfffffff0;
3099 } else {
3100 intr->erstba_low = val & 0xffffffc0;
3101 }
3102 break;
3103 case 0x14: /* ERSTBA high */
3104 intr->erstba_high = val;
3105 xhci_er_reset(xhci, v);
3106 break;
3107 case 0x18: /* ERDP low */
3108 if (val & ERDP_EHB) {
3109 intr->erdp_low &= ~ERDP_EHB;
3110 }
3111 intr->erdp_low = (val & ~ERDP_EHB) | (intr->erdp_low & ERDP_EHB);
3112 if (val & ERDP_EHB) {
3113 dma_addr_t erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
3114 unsigned int dp_idx = (erdp - intr->er_start) / TRB_SIZE;
3115 if (erdp >= intr->er_start &&
3116 erdp < (intr->er_start + TRB_SIZE * intr->er_size) &&
3117 dp_idx != intr->er_ep_idx) {
3118 xhci_intr_raise(xhci, v);
3119 }
3120 }
3121 break;
3122 case 0x1c: /* ERDP high */
3123 intr->erdp_high = val;
3124 break;
3125 default:
3126 trace_usb_xhci_unimplemented("oper write", reg);
3127 }
3128 }
3129
3130 static uint64_t xhci_doorbell_read(void *ptr, hwaddr reg,
3131 unsigned size)
3132 {
3133 /* doorbells always read as 0 */
3134 trace_usb_xhci_doorbell_read(reg, 0);
3135 return 0;
3136 }
3137
3138 static void xhci_doorbell_write(void *ptr, hwaddr reg,
3139 uint64_t val, unsigned size)
3140 {
3141 XHCIState *xhci = ptr;
3142 unsigned int epid, streamid;
3143
3144 trace_usb_xhci_doorbell_write(reg, val);
3145
3146 if (!xhci_running(xhci)) {
3147 DPRINTF("xhci: wrote doorbell while xHC stopped or paused\n");
3148 return;
3149 }
3150
3151 reg >>= 2;
3152
3153 if (reg == 0) {
3154 if (val == 0) {
3155 xhci_process_commands(xhci);
3156 } else {
3157 DPRINTF("xhci: bad doorbell 0 write: 0x%x\n",
3158 (uint32_t)val);
3159 }
3160 } else {
3161 epid = val & 0xff;
3162 streamid = (val >> 16) & 0xffff;
3163 if (reg > xhci->numslots) {
3164 DPRINTF("xhci: bad doorbell %d\n", (int)reg);
3165 } else if (epid == 0 || epid > 31) {
3166 DPRINTF("xhci: bad doorbell %d write: 0x%x\n",
3167 (int)reg, (uint32_t)val);
3168 } else {
3169 xhci_kick_ep(xhci, reg, epid, streamid);
3170 }
3171 }
3172 }
3173
3174 static void xhci_cap_write(void *opaque, hwaddr addr, uint64_t val,
3175 unsigned width)
3176 {
3177 /* nothing */
3178 }
3179
3180 static const MemoryRegionOps xhci_cap_ops = {
3181 .read = xhci_cap_read,
3182 .write = xhci_cap_write,
3183 .valid.min_access_size = 1,
3184 .valid.max_access_size = 4,
3185 .impl.min_access_size = 4,
3186 .impl.max_access_size = 4,
3187 .endianness = DEVICE_LITTLE_ENDIAN,
3188 };
3189
3190 static const MemoryRegionOps xhci_oper_ops = {
3191 .read = xhci_oper_read,
3192 .write = xhci_oper_write,
3193 .valid.min_access_size = 4,
3194 .valid.max_access_size = sizeof(dma_addr_t),
3195 .endianness = DEVICE_LITTLE_ENDIAN,
3196 };
3197
3198 static const MemoryRegionOps xhci_port_ops = {
3199 .read = xhci_port_read,
3200 .write = xhci_port_write,
3201 .valid.min_access_size = 4,
3202 .valid.max_access_size = 4,
3203 .endianness = DEVICE_LITTLE_ENDIAN,
3204 };
3205
3206 static const MemoryRegionOps xhci_runtime_ops = {
3207 .read = xhci_runtime_read,
3208 .write = xhci_runtime_write,
3209 .valid.min_access_size = 4,
3210 .valid.max_access_size = sizeof(dma_addr_t),
3211 .endianness = DEVICE_LITTLE_ENDIAN,
3212 };
3213
3214 static const MemoryRegionOps xhci_doorbell_ops = {
3215 .read = xhci_doorbell_read,
3216 .write = xhci_doorbell_write,
3217 .valid.min_access_size = 4,
3218 .valid.max_access_size = 4,
3219 .endianness = DEVICE_LITTLE_ENDIAN,
3220 };
3221
3222 static void xhci_attach(USBPort *usbport)
3223 {
3224 XHCIState *xhci = usbport->opaque;
3225 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3226
3227 xhci_port_update(port, 0);
3228 }
3229
3230 static void xhci_detach(USBPort *usbport)
3231 {
3232 XHCIState *xhci = usbport->opaque;
3233 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3234
3235 xhci_detach_slot(xhci, usbport);
3236 xhci_port_update(port, 1);
3237 }
3238
3239 static void xhci_wakeup(USBPort *usbport)
3240 {
3241 XHCIState *xhci = usbport->opaque;
3242 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3243
3244 assert(port);
3245 if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
3246 return;
3247 }
3248 set_field(&port->portsc, PLS_RESUME, PORTSC_PLS);
3249 xhci_port_notify(port, PORTSC_PLC);
3250 }
3251
3252 static void xhci_complete(USBPort *port, USBPacket *packet)
3253 {
3254 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
3255
3256 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
3257 xhci_ep_nuke_one_xfer(xfer, 0);
3258 return;
3259 }
3260 xhci_try_complete_packet(xfer);
3261 xhci_kick_epctx(xfer->epctx, xfer->streamid);
3262 if (xfer->complete) {
3263 xhci_ep_free_xfer(xfer);
3264 }
3265 }
3266
3267 static void xhci_child_detach(USBPort *uport, USBDevice *child)
3268 {
3269 USBBus *bus = usb_bus_from_device(child);
3270 XHCIState *xhci = container_of(bus, XHCIState, bus);
3271
3272 xhci_detach_slot(xhci, child->port);
3273 }
3274
3275 static USBPortOps xhci_uport_ops = {
3276 .attach = xhci_attach,
3277 .detach = xhci_detach,
3278 .wakeup = xhci_wakeup,
3279 .complete = xhci_complete,
3280 .child_detach = xhci_child_detach,
3281 };
3282
3283 static int xhci_find_epid(USBEndpoint *ep)
3284 {
3285 if (ep->nr == 0) {
3286 return 1;
3287 }
3288 if (ep->pid == USB_TOKEN_IN) {
3289 return ep->nr * 2 + 1;
3290 } else {
3291 return ep->nr * 2;
3292 }
3293 }
3294
3295 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx)
3296 {
3297 USBPort *uport;
3298 uint32_t token;
3299
3300 if (!epctx) {
3301 return NULL;
3302 }
3303 uport = epctx->xhci->slots[epctx->slotid - 1].uport;
3304 if (!uport || !uport->dev) {
3305 return NULL;
3306 }
3307 token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT;
3308 return usb_ep_get(uport->dev, token, epctx->epid >> 1);
3309 }
3310
3311 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
3312 unsigned int stream)
3313 {
3314 XHCIState *xhci = container_of(bus, XHCIState, bus);
3315 int slotid;
3316
3317 DPRINTF("%s\n", __func__);
3318 slotid = ep->dev->addr;
3319 if (slotid == 0 || slotid > xhci->numslots ||
3320 !xhci->slots[slotid - 1].enabled) {
3321 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr);
3322 return;
3323 }
3324 xhci_kick_ep(xhci, slotid, xhci_find_epid(ep), stream);
3325 }
3326
3327 static USBBusOps xhci_bus_ops = {
3328 .wakeup_endpoint = xhci_wakeup_endpoint,
3329 };
3330
3331 static void usb_xhci_init(XHCIState *xhci)
3332 {
3333 XHCIPort *port;
3334 unsigned int i, usbports, speedmask;
3335
3336 xhci->usbsts = USBSTS_HCH;
3337
3338 if (xhci->numports_2 > XHCI_MAXPORTS_2) {
3339 xhci->numports_2 = XHCI_MAXPORTS_2;
3340 }
3341 if (xhci->numports_3 > XHCI_MAXPORTS_3) {
3342 xhci->numports_3 = XHCI_MAXPORTS_3;
3343 }
3344 usbports = MAX(xhci->numports_2, xhci->numports_3);
3345 xhci->numports = xhci->numports_2 + xhci->numports_3;
3346
3347 usb_bus_new(&xhci->bus, sizeof(xhci->bus), &xhci_bus_ops, xhci->hostOpaque);
3348
3349 for (i = 0; i < usbports; i++) {
3350 speedmask = 0;
3351 if (i < xhci->numports_2) {
3352 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3353 port = &xhci->ports[i + xhci->numports_3];
3354 port->portnr = i + 1 + xhci->numports_3;
3355 } else {
3356 port = &xhci->ports[i];
3357 port->portnr = i + 1;
3358 }
3359 port->uport = &xhci->uports[i];
3360 port->speedmask =
3361 USB_SPEED_MASK_LOW |
3362 USB_SPEED_MASK_FULL |
3363 USB_SPEED_MASK_HIGH;
3364 assert(i < XHCI_MAXPORTS);
3365 snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1);
3366 speedmask |= port->speedmask;
3367 }
3368 if (i < xhci->numports_3) {
3369 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3370 port = &xhci->ports[i];
3371 port->portnr = i + 1;
3372 } else {
3373 port = &xhci->ports[i + xhci->numports_2];
3374 port->portnr = i + 1 + xhci->numports_2;
3375 }
3376 port->uport = &xhci->uports[i];
3377 port->speedmask = USB_SPEED_MASK_SUPER;
3378 assert(i < XHCI_MAXPORTS);
3379 snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1);
3380 speedmask |= port->speedmask;
3381 }
3382 usb_register_port(&xhci->bus, &xhci->uports[i], xhci, i,
3383 &xhci_uport_ops, speedmask);
3384 }
3385 }
3386
3387 static void usb_xhci_realize(DeviceState *dev, Error **errp)
3388 {
3389 int i;
3390
3391 XHCIState *xhci = XHCI(dev);
3392
3393 if (xhci->numintrs > XHCI_MAXINTRS) {
3394 xhci->numintrs = XHCI_MAXINTRS;
3395 }
3396 while (xhci->numintrs & (xhci->numintrs - 1)) { /* ! power of 2 */
3397 xhci->numintrs++;
3398 }
3399 if (xhci->numintrs < 1) {
3400 xhci->numintrs = 1;
3401 }
3402 if (xhci->numslots > XHCI_MAXSLOTS) {
3403 xhci->numslots = XHCI_MAXSLOTS;
3404 }
3405 if (xhci->numslots < 1) {
3406 xhci->numslots = 1;
3407 }
3408 if (xhci_get_flag(xhci, XHCI_FLAG_ENABLE_STREAMS)) {
3409 xhci->max_pstreams_mask = 7; /* == 256 primary streams */
3410 } else {
3411 xhci->max_pstreams_mask = 0;
3412 }
3413
3414 usb_xhci_init(xhci);
3415 xhci->mfwrap_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_mfwrap_timer, xhci);
3416
3417 memory_region_init(&xhci->mem, OBJECT(dev), "xhci", XHCI_LEN_REGS);
3418 memory_region_init_io(&xhci->mem_cap, OBJECT(dev), &xhci_cap_ops, xhci,
3419 "capabilities", LEN_CAP);
3420 memory_region_init_io(&xhci->mem_oper, OBJECT(dev), &xhci_oper_ops, xhci,
3421 "operational", 0x400);
3422 memory_region_init_io(&xhci->mem_runtime, OBJECT(dev), &xhci_runtime_ops,
3423 xhci, "runtime", LEN_RUNTIME);
3424 memory_region_init_io(&xhci->mem_doorbell, OBJECT(dev), &xhci_doorbell_ops,
3425 xhci, "doorbell", LEN_DOORBELL);
3426
3427 memory_region_add_subregion(&xhci->mem, 0, &xhci->mem_cap);
3428 memory_region_add_subregion(&xhci->mem, OFF_OPER, &xhci->mem_oper);
3429 memory_region_add_subregion(&xhci->mem, OFF_RUNTIME, &xhci->mem_runtime);
3430 memory_region_add_subregion(&xhci->mem, OFF_DOORBELL, &xhci->mem_doorbell);
3431
3432 for (i = 0; i < xhci->numports; i++) {
3433 XHCIPort *port = &xhci->ports[i];
3434 uint32_t offset = OFF_OPER + 0x400 + 0x10 * i;
3435 port->xhci = xhci;
3436 memory_region_init_io(&port->mem, OBJECT(dev), &xhci_port_ops, port,
3437 port->name, 0x10);
3438 memory_region_add_subregion(&xhci->mem, offset, &port->mem);
3439 }
3440 }
3441
3442 static void usb_xhci_unrealize(DeviceState *dev)
3443 {
3444 int i;
3445 XHCIState *xhci = XHCI(dev);
3446
3447 trace_usb_xhci_exit();
3448
3449 for (i = 0; i < xhci->numslots; i++) {
3450 xhci_disable_slot(xhci, i + 1);
3451 }
3452
3453 if (xhci->mfwrap_timer) {
3454 timer_free(xhci->mfwrap_timer);
3455 xhci->mfwrap_timer = NULL;
3456 }
3457
3458 memory_region_del_subregion(&xhci->mem, &xhci->mem_cap);
3459 memory_region_del_subregion(&xhci->mem, &xhci->mem_oper);
3460 memory_region_del_subregion(&xhci->mem, &xhci->mem_runtime);
3461 memory_region_del_subregion(&xhci->mem, &xhci->mem_doorbell);
3462
3463 for (i = 0; i < xhci->numports; i++) {
3464 XHCIPort *port = &xhci->ports[i];
3465 memory_region_del_subregion(&xhci->mem, &port->mem);
3466 }
3467
3468 usb_bus_release(&xhci->bus);
3469 }
3470
3471 static int usb_xhci_post_load(void *opaque, int version_id)
3472 {
3473 XHCIState *xhci = opaque;
3474 XHCISlot *slot;
3475 XHCIEPContext *epctx;
3476 dma_addr_t dcbaap, pctx;
3477 uint32_t slot_ctx[4];
3478 uint32_t ep_ctx[5];
3479 int slotid, epid, state;
3480 uint64_t addr;
3481
3482 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
3483
3484 for (slotid = 1; slotid <= xhci->numslots; slotid++) {
3485 slot = &xhci->slots[slotid-1];
3486 if (!slot->addressed) {
3487 continue;
3488 }
3489 ldq_le_dma(xhci->as, dcbaap + 8 * slotid, &addr, MEMTXATTRS_UNSPECIFIED);
3490 slot->ctx = xhci_mask64(addr);
3491
3492 xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx));
3493 slot->uport = xhci_lookup_uport(xhci, slot_ctx);
3494 if (!slot->uport) {
3495 /* should not happen, but may trigger on guest bugs */
3496 slot->enabled = 0;
3497 slot->addressed = 0;
3498 continue;
3499 }
3500 assert(slot->uport && slot->uport->dev);
3501
3502 for (epid = 1; epid <= 31; epid++) {
3503 pctx = slot->ctx + 32 * epid;
3504 xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx));
3505 state = ep_ctx[0] & EP_STATE_MASK;
3506 if (state == EP_DISABLED) {
3507 continue;
3508 }
3509 epctx = xhci_alloc_epctx(xhci, slotid, epid);
3510 slot->eps[epid-1] = epctx;
3511 xhci_init_epctx(epctx, pctx, ep_ctx);
3512 epctx->state = state;
3513 if (state == EP_RUNNING) {
3514 /* kick endpoint after vmload is finished */
3515 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
3516 }
3517 }
3518 }
3519 return 0;
3520 }
3521
3522 static const VMStateDescription vmstate_xhci_ring = {
3523 .name = "xhci-ring",
3524 .version_id = 1,
3525 .fields = (VMStateField[]) {
3526 VMSTATE_UINT64(dequeue, XHCIRing),
3527 VMSTATE_BOOL(ccs, XHCIRing),
3528 VMSTATE_END_OF_LIST()
3529 }
3530 };
3531
3532 static const VMStateDescription vmstate_xhci_port = {
3533 .name = "xhci-port",
3534 .version_id = 1,
3535 .fields = (VMStateField[]) {
3536 VMSTATE_UINT32(portsc, XHCIPort),
3537 VMSTATE_END_OF_LIST()
3538 }
3539 };
3540
3541 static const VMStateDescription vmstate_xhci_slot = {
3542 .name = "xhci-slot",
3543 .version_id = 1,
3544 .fields = (VMStateField[]) {
3545 VMSTATE_BOOL(enabled, XHCISlot),
3546 VMSTATE_BOOL(addressed, XHCISlot),
3547 VMSTATE_END_OF_LIST()
3548 }
3549 };
3550
3551 static const VMStateDescription vmstate_xhci_event = {
3552 .name = "xhci-event",
3553 .version_id = 1,
3554 .fields = (VMStateField[]) {
3555 VMSTATE_UINT32(type, XHCIEvent),
3556 VMSTATE_UINT32(ccode, XHCIEvent),
3557 VMSTATE_UINT64(ptr, XHCIEvent),
3558 VMSTATE_UINT32(length, XHCIEvent),
3559 VMSTATE_UINT32(flags, XHCIEvent),
3560 VMSTATE_UINT8(slotid, XHCIEvent),
3561 VMSTATE_UINT8(epid, XHCIEvent),
3562 VMSTATE_END_OF_LIST()
3563 }
3564 };
3565
3566 static bool xhci_er_full(void *opaque, int version_id)
3567 {
3568 return false;
3569 }
3570
3571 static const VMStateDescription vmstate_xhci_intr = {
3572 .name = "xhci-intr",
3573 .version_id = 1,
3574 .fields = (VMStateField[]) {
3575 /* registers */
3576 VMSTATE_UINT32(iman, XHCIInterrupter),
3577 VMSTATE_UINT32(imod, XHCIInterrupter),
3578 VMSTATE_UINT32(erstsz, XHCIInterrupter),
3579 VMSTATE_UINT32(erstba_low, XHCIInterrupter),
3580 VMSTATE_UINT32(erstba_high, XHCIInterrupter),
3581 VMSTATE_UINT32(erdp_low, XHCIInterrupter),
3582 VMSTATE_UINT32(erdp_high, XHCIInterrupter),
3583
3584 /* state */
3585 VMSTATE_BOOL(msix_used, XHCIInterrupter),
3586 VMSTATE_BOOL(er_pcs, XHCIInterrupter),
3587 VMSTATE_UINT64(er_start, XHCIInterrupter),
3588 VMSTATE_UINT32(er_size, XHCIInterrupter),
3589 VMSTATE_UINT32(er_ep_idx, XHCIInterrupter),
3590
3591 /* event queue (used if ring is full) */
3592 VMSTATE_BOOL(er_full_unused, XHCIInterrupter),
3593 VMSTATE_UINT32_TEST(ev_buffer_put, XHCIInterrupter, xhci_er_full),
3594 VMSTATE_UINT32_TEST(ev_buffer_get, XHCIInterrupter, xhci_er_full),
3595 VMSTATE_STRUCT_ARRAY_TEST(ev_buffer, XHCIInterrupter, EV_QUEUE,
3596 xhci_er_full, 1,
3597 vmstate_xhci_event, XHCIEvent),
3598
3599 VMSTATE_END_OF_LIST()
3600 }
3601 };
3602
3603 const VMStateDescription vmstate_xhci = {
3604 .name = "xhci-core",
3605 .version_id = 1,
3606 .post_load = usb_xhci_post_load,
3607 .fields = (VMStateField[]) {
3608 VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1,
3609 vmstate_xhci_port, XHCIPort),
3610 VMSTATE_STRUCT_VARRAY_UINT32(slots, XHCIState, numslots, 1,
3611 vmstate_xhci_slot, XHCISlot),
3612 VMSTATE_STRUCT_VARRAY_UINT32(intr, XHCIState, numintrs, 1,
3613 vmstate_xhci_intr, XHCIInterrupter),
3614
3615 /* Operational Registers */
3616 VMSTATE_UINT32(usbcmd, XHCIState),
3617 VMSTATE_UINT32(usbsts, XHCIState),
3618 VMSTATE_UINT32(dnctrl, XHCIState),
3619 VMSTATE_UINT32(crcr_low, XHCIState),
3620 VMSTATE_UINT32(crcr_high, XHCIState),
3621 VMSTATE_UINT32(dcbaap_low, XHCIState),
3622 VMSTATE_UINT32(dcbaap_high, XHCIState),
3623 VMSTATE_UINT32(config, XHCIState),
3624
3625 /* Runtime Registers & state */
3626 VMSTATE_INT64(mfindex_start, XHCIState),
3627 VMSTATE_TIMER_PTR(mfwrap_timer, XHCIState),
3628 VMSTATE_STRUCT(cmd_ring, XHCIState, 1, vmstate_xhci_ring, XHCIRing),
3629
3630 VMSTATE_END_OF_LIST()
3631 }
3632 };
3633
3634 static Property xhci_properties[] = {
3635 DEFINE_PROP_BIT("streams", XHCIState, flags,
3636 XHCI_FLAG_ENABLE_STREAMS, true),
3637 DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4),
3638 DEFINE_PROP_UINT32("p3", XHCIState, numports_3, 4),
3639 DEFINE_PROP_LINK("host", XHCIState, hostOpaque, TYPE_DEVICE,
3640 DeviceState *),
3641 DEFINE_PROP_END_OF_LIST(),
3642 };
3643
3644 static void xhci_class_init(ObjectClass *klass, void *data)
3645 {
3646 DeviceClass *dc = DEVICE_CLASS(klass);
3647
3648 dc->realize = usb_xhci_realize;
3649 dc->unrealize = usb_xhci_unrealize;
3650 dc->reset = xhci_reset;
3651 device_class_set_props(dc, xhci_properties);
3652 dc->user_creatable = false;
3653 }
3654
3655 static const TypeInfo xhci_info = {
3656 .name = TYPE_XHCI,
3657 .parent = TYPE_DEVICE,
3658 .instance_size = sizeof(XHCIState),
3659 .class_init = xhci_class_init,
3660 };
3661
3662 static void xhci_register_types(void)
3663 {
3664 type_register_static(&xhci_info);
3665 }
3666
3667 type_init(xhci_register_types)
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