Merge remote-tracking branch 'remotes/philmd-gitlab/tags/renesas-20201027' into staging
[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 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/module.h"
25 #include "qemu/queue.h"
26 #include "migration/vmstate.h"
27 #include "hw/qdev-properties.h"
28 #include "trace.h"
29 #include "qapi/error.h"
30
31 #include "hcd-xhci.h"
32
33 //#define DEBUG_XHCI
34 //#define DEBUG_DATA
35
36 #ifdef DEBUG_XHCI
37 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
38 #else
39 #define DPRINTF(...) do {} while (0)
40 #endif
41 #define FIXME(_msg) do { fprintf(stderr, "FIXME %s:%d %s\n", \
42 __func__, __LINE__, _msg); abort(); } while (0)
43
44 #define TRB_LINK_LIMIT 32
45 #define COMMAND_LIMIT 256
46 #define TRANSFER_LIMIT 256
47
48 #define LEN_CAP 0x40
49 #define LEN_OPER (0x400 + 0x10 * XHCI_MAXPORTS)
50 #define LEN_RUNTIME ((XHCI_MAXINTRS + 1) * 0x20)
51 #define LEN_DOORBELL ((XHCI_MAXSLOTS + 1) * 0x20)
52
53 #define OFF_OPER LEN_CAP
54 #define OFF_RUNTIME 0x1000
55 #define OFF_DOORBELL 0x2000
56
57 #if (OFF_OPER + LEN_OPER) > OFF_RUNTIME
58 #error Increase OFF_RUNTIME
59 #endif
60 #if (OFF_RUNTIME + LEN_RUNTIME) > OFF_DOORBELL
61 #error Increase OFF_DOORBELL
62 #endif
63 #if (OFF_DOORBELL + LEN_DOORBELL) > XHCI_LEN_REGS
64 # error Increase XHCI_LEN_REGS
65 #endif
66
67 /* bit definitions */
68 #define USBCMD_RS (1<<0)
69 #define USBCMD_HCRST (1<<1)
70 #define USBCMD_INTE (1<<2)
71 #define USBCMD_HSEE (1<<3)
72 #define USBCMD_LHCRST (1<<7)
73 #define USBCMD_CSS (1<<8)
74 #define USBCMD_CRS (1<<9)
75 #define USBCMD_EWE (1<<10)
76 #define USBCMD_EU3S (1<<11)
77
78 #define USBSTS_HCH (1<<0)
79 #define USBSTS_HSE (1<<2)
80 #define USBSTS_EINT (1<<3)
81 #define USBSTS_PCD (1<<4)
82 #define USBSTS_SSS (1<<8)
83 #define USBSTS_RSS (1<<9)
84 #define USBSTS_SRE (1<<10)
85 #define USBSTS_CNR (1<<11)
86 #define USBSTS_HCE (1<<12)
87
88
89 #define PORTSC_CCS (1<<0)
90 #define PORTSC_PED (1<<1)
91 #define PORTSC_OCA (1<<3)
92 #define PORTSC_PR (1<<4)
93 #define PORTSC_PLS_SHIFT 5
94 #define PORTSC_PLS_MASK 0xf
95 #define PORTSC_PP (1<<9)
96 #define PORTSC_SPEED_SHIFT 10
97 #define PORTSC_SPEED_MASK 0xf
98 #define PORTSC_SPEED_FULL (1<<10)
99 #define PORTSC_SPEED_LOW (2<<10)
100 #define PORTSC_SPEED_HIGH (3<<10)
101 #define PORTSC_SPEED_SUPER (4<<10)
102 #define PORTSC_PIC_SHIFT 14
103 #define PORTSC_PIC_MASK 0x3
104 #define PORTSC_LWS (1<<16)
105 #define PORTSC_CSC (1<<17)
106 #define PORTSC_PEC (1<<18)
107 #define PORTSC_WRC (1<<19)
108 #define PORTSC_OCC (1<<20)
109 #define PORTSC_PRC (1<<21)
110 #define PORTSC_PLC (1<<22)
111 #define PORTSC_CEC (1<<23)
112 #define PORTSC_CAS (1<<24)
113 #define PORTSC_WCE (1<<25)
114 #define PORTSC_WDE (1<<26)
115 #define PORTSC_WOE (1<<27)
116 #define PORTSC_DR (1<<30)
117 #define PORTSC_WPR (1<<31)
118
119 #define CRCR_RCS (1<<0)
120 #define CRCR_CS (1<<1)
121 #define CRCR_CA (1<<2)
122 #define CRCR_CRR (1<<3)
123
124 #define IMAN_IP (1<<0)
125 #define IMAN_IE (1<<1)
126
127 #define ERDP_EHB (1<<3)
128
129 #define TRB_SIZE 16
130 typedef struct XHCITRB {
131 uint64_t parameter;
132 uint32_t status;
133 uint32_t control;
134 dma_addr_t addr;
135 bool ccs;
136 } XHCITRB;
137
138 enum {
139 PLS_U0 = 0,
140 PLS_U1 = 1,
141 PLS_U2 = 2,
142 PLS_U3 = 3,
143 PLS_DISABLED = 4,
144 PLS_RX_DETECT = 5,
145 PLS_INACTIVE = 6,
146 PLS_POLLING = 7,
147 PLS_RECOVERY = 8,
148 PLS_HOT_RESET = 9,
149 PLS_COMPILANCE_MODE = 10,
150 PLS_TEST_MODE = 11,
151 PLS_RESUME = 15,
152 };
153
154 #define CR_LINK TR_LINK
155
156 #define TRB_C (1<<0)
157 #define TRB_TYPE_SHIFT 10
158 #define TRB_TYPE_MASK 0x3f
159 #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK)
160
161 #define TRB_EV_ED (1<<2)
162
163 #define TRB_TR_ENT (1<<1)
164 #define TRB_TR_ISP (1<<2)
165 #define TRB_TR_NS (1<<3)
166 #define TRB_TR_CH (1<<4)
167 #define TRB_TR_IOC (1<<5)
168 #define TRB_TR_IDT (1<<6)
169 #define TRB_TR_TBC_SHIFT 7
170 #define TRB_TR_TBC_MASK 0x3
171 #define TRB_TR_BEI (1<<9)
172 #define TRB_TR_TLBPC_SHIFT 16
173 #define TRB_TR_TLBPC_MASK 0xf
174 #define TRB_TR_FRAMEID_SHIFT 20
175 #define TRB_TR_FRAMEID_MASK 0x7ff
176 #define TRB_TR_SIA (1<<31)
177
178 #define TRB_TR_DIR (1<<16)
179
180 #define TRB_CR_SLOTID_SHIFT 24
181 #define TRB_CR_SLOTID_MASK 0xff
182 #define TRB_CR_EPID_SHIFT 16
183 #define TRB_CR_EPID_MASK 0x1f
184
185 #define TRB_CR_BSR (1<<9)
186 #define TRB_CR_DC (1<<9)
187
188 #define TRB_LK_TC (1<<1)
189
190 #define TRB_INTR_SHIFT 22
191 #define TRB_INTR_MASK 0x3ff
192 #define TRB_INTR(t) (((t).status >> TRB_INTR_SHIFT) & TRB_INTR_MASK)
193
194 #define EP_TYPE_MASK 0x7
195 #define EP_TYPE_SHIFT 3
196
197 #define EP_STATE_MASK 0x7
198 #define EP_DISABLED (0<<0)
199 #define EP_RUNNING (1<<0)
200 #define EP_HALTED (2<<0)
201 #define EP_STOPPED (3<<0)
202 #define EP_ERROR (4<<0)
203
204 #define SLOT_STATE_MASK 0x1f
205 #define SLOT_STATE_SHIFT 27
206 #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK)
207 #define SLOT_ENABLED 0
208 #define SLOT_DEFAULT 1
209 #define SLOT_ADDRESSED 2
210 #define SLOT_CONFIGURED 3
211
212 #define SLOT_CONTEXT_ENTRIES_MASK 0x1f
213 #define SLOT_CONTEXT_ENTRIES_SHIFT 27
214
215 #define get_field(data, field) \
216 (((data) >> field##_SHIFT) & field##_MASK)
217
218 #define set_field(data, newval, field) do { \
219 uint32_t val = *data; \
220 val &= ~(field##_MASK << field##_SHIFT); \
221 val |= ((newval) & field##_MASK) << field##_SHIFT; \
222 *data = val; \
223 } while (0)
224
225 typedef enum EPType {
226 ET_INVALID = 0,
227 ET_ISO_OUT,
228 ET_BULK_OUT,
229 ET_INTR_OUT,
230 ET_CONTROL,
231 ET_ISO_IN,
232 ET_BULK_IN,
233 ET_INTR_IN,
234 } EPType;
235
236 typedef struct XHCITransfer {
237 XHCIEPContext *epctx;
238 USBPacket packet;
239 QEMUSGList sgl;
240 bool running_async;
241 bool running_retry;
242 bool complete;
243 bool int_req;
244 unsigned int iso_pkts;
245 unsigned int streamid;
246 bool in_xfer;
247 bool iso_xfer;
248 bool timed_xfer;
249
250 unsigned int trb_count;
251 XHCITRB *trbs;
252
253 TRBCCode status;
254
255 unsigned int pkts;
256 unsigned int pktsize;
257 unsigned int cur_pkt;
258
259 uint64_t mfindex_kick;
260
261 QTAILQ_ENTRY(XHCITransfer) next;
262 } XHCITransfer;
263
264 struct XHCIStreamContext {
265 dma_addr_t pctx;
266 unsigned int sct;
267 XHCIRing ring;
268 };
269
270 struct XHCIEPContext {
271 XHCIState *xhci;
272 unsigned int slotid;
273 unsigned int epid;
274
275 XHCIRing ring;
276 uint32_t xfer_count;
277 QTAILQ_HEAD(, XHCITransfer) transfers;
278 XHCITransfer *retry;
279 EPType type;
280 dma_addr_t pctx;
281 unsigned int max_psize;
282 uint32_t state;
283 uint32_t kick_active;
284
285 /* streams */
286 unsigned int max_pstreams;
287 bool lsa;
288 unsigned int nr_pstreams;
289 XHCIStreamContext *pstreams;
290
291 /* iso xfer scheduling */
292 unsigned int interval;
293 int64_t mfindex_last;
294 QEMUTimer *kick_timer;
295 };
296
297 typedef struct XHCIEvRingSeg {
298 uint32_t addr_low;
299 uint32_t addr_high;
300 uint32_t size;
301 uint32_t rsvd;
302 } XHCIEvRingSeg;
303
304 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
305 unsigned int epid, unsigned int streamid);
306 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid);
307 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
308 unsigned int epid);
309 static void xhci_xfer_report(XHCITransfer *xfer);
310 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v);
311 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v);
312 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx);
313
314 static const char *TRBType_names[] = {
315 [TRB_RESERVED] = "TRB_RESERVED",
316 [TR_NORMAL] = "TR_NORMAL",
317 [TR_SETUP] = "TR_SETUP",
318 [TR_DATA] = "TR_DATA",
319 [TR_STATUS] = "TR_STATUS",
320 [TR_ISOCH] = "TR_ISOCH",
321 [TR_LINK] = "TR_LINK",
322 [TR_EVDATA] = "TR_EVDATA",
323 [TR_NOOP] = "TR_NOOP",
324 [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT",
325 [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT",
326 [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE",
327 [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT",
328 [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT",
329 [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT",
330 [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT",
331 [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE",
332 [CR_RESET_DEVICE] = "CR_RESET_DEVICE",
333 [CR_FORCE_EVENT] = "CR_FORCE_EVENT",
334 [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW",
335 [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE",
336 [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH",
337 [CR_FORCE_HEADER] = "CR_FORCE_HEADER",
338 [CR_NOOP] = "CR_NOOP",
339 [ER_TRANSFER] = "ER_TRANSFER",
340 [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE",
341 [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE",
342 [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST",
343 [ER_DOORBELL] = "ER_DOORBELL",
344 [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER",
345 [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION",
346 [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP",
347 [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION",
348 [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE",
349 };
350
351 static const char *TRBCCode_names[] = {
352 [CC_INVALID] = "CC_INVALID",
353 [CC_SUCCESS] = "CC_SUCCESS",
354 [CC_DATA_BUFFER_ERROR] = "CC_DATA_BUFFER_ERROR",
355 [CC_BABBLE_DETECTED] = "CC_BABBLE_DETECTED",
356 [CC_USB_TRANSACTION_ERROR] = "CC_USB_TRANSACTION_ERROR",
357 [CC_TRB_ERROR] = "CC_TRB_ERROR",
358 [CC_STALL_ERROR] = "CC_STALL_ERROR",
359 [CC_RESOURCE_ERROR] = "CC_RESOURCE_ERROR",
360 [CC_BANDWIDTH_ERROR] = "CC_BANDWIDTH_ERROR",
361 [CC_NO_SLOTS_ERROR] = "CC_NO_SLOTS_ERROR",
362 [CC_INVALID_STREAM_TYPE_ERROR] = "CC_INVALID_STREAM_TYPE_ERROR",
363 [CC_SLOT_NOT_ENABLED_ERROR] = "CC_SLOT_NOT_ENABLED_ERROR",
364 [CC_EP_NOT_ENABLED_ERROR] = "CC_EP_NOT_ENABLED_ERROR",
365 [CC_SHORT_PACKET] = "CC_SHORT_PACKET",
366 [CC_RING_UNDERRUN] = "CC_RING_UNDERRUN",
367 [CC_RING_OVERRUN] = "CC_RING_OVERRUN",
368 [CC_VF_ER_FULL] = "CC_VF_ER_FULL",
369 [CC_PARAMETER_ERROR] = "CC_PARAMETER_ERROR",
370 [CC_BANDWIDTH_OVERRUN] = "CC_BANDWIDTH_OVERRUN",
371 [CC_CONTEXT_STATE_ERROR] = "CC_CONTEXT_STATE_ERROR",
372 [CC_NO_PING_RESPONSE_ERROR] = "CC_NO_PING_RESPONSE_ERROR",
373 [CC_EVENT_RING_FULL_ERROR] = "CC_EVENT_RING_FULL_ERROR",
374 [CC_INCOMPATIBLE_DEVICE_ERROR] = "CC_INCOMPATIBLE_DEVICE_ERROR",
375 [CC_MISSED_SERVICE_ERROR] = "CC_MISSED_SERVICE_ERROR",
376 [CC_COMMAND_RING_STOPPED] = "CC_COMMAND_RING_STOPPED",
377 [CC_COMMAND_ABORTED] = "CC_COMMAND_ABORTED",
378 [CC_STOPPED] = "CC_STOPPED",
379 [CC_STOPPED_LENGTH_INVALID] = "CC_STOPPED_LENGTH_INVALID",
380 [CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR]
381 = "CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR",
382 [CC_ISOCH_BUFFER_OVERRUN] = "CC_ISOCH_BUFFER_OVERRUN",
383 [CC_EVENT_LOST_ERROR] = "CC_EVENT_LOST_ERROR",
384 [CC_UNDEFINED_ERROR] = "CC_UNDEFINED_ERROR",
385 [CC_INVALID_STREAM_ID_ERROR] = "CC_INVALID_STREAM_ID_ERROR",
386 [CC_SECONDARY_BANDWIDTH_ERROR] = "CC_SECONDARY_BANDWIDTH_ERROR",
387 [CC_SPLIT_TRANSACTION_ERROR] = "CC_SPLIT_TRANSACTION_ERROR",
388 };
389
390 static const char *ep_state_names[] = {
391 [EP_DISABLED] = "disabled",
392 [EP_RUNNING] = "running",
393 [EP_HALTED] = "halted",
394 [EP_STOPPED] = "stopped",
395 [EP_ERROR] = "error",
396 };
397
398 static const char *lookup_name(uint32_t index, const char **list, uint32_t llen)
399 {
400 if (index >= llen || list[index] == NULL) {
401 return "???";
402 }
403 return list[index];
404 }
405
406 static const char *trb_name(XHCITRB *trb)
407 {
408 return lookup_name(TRB_TYPE(*trb), TRBType_names,
409 ARRAY_SIZE(TRBType_names));
410 }
411
412 static const char *event_name(XHCIEvent *event)
413 {
414 return lookup_name(event->ccode, TRBCCode_names,
415 ARRAY_SIZE(TRBCCode_names));
416 }
417
418 static const char *ep_state_name(uint32_t state)
419 {
420 return lookup_name(state, ep_state_names,
421 ARRAY_SIZE(ep_state_names));
422 }
423
424 bool xhci_get_flag(XHCIState *xhci, enum xhci_flags bit)
425 {
426 return xhci->flags & (1 << bit);
427 }
428
429 void xhci_set_flag(XHCIState *xhci, enum xhci_flags bit)
430 {
431 xhci->flags |= (1 << bit);
432 }
433
434 static uint64_t xhci_mfindex_get(XHCIState *xhci)
435 {
436 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
437 return (now - xhci->mfindex_start) / 125000;
438 }
439
440 static void xhci_mfwrap_update(XHCIState *xhci)
441 {
442 const uint32_t bits = USBCMD_RS | USBCMD_EWE;
443 uint32_t mfindex, left;
444 int64_t now;
445
446 if ((xhci->usbcmd & bits) == bits) {
447 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
448 mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff;
449 left = 0x4000 - mfindex;
450 timer_mod(xhci->mfwrap_timer, now + left * 125000);
451 } else {
452 timer_del(xhci->mfwrap_timer);
453 }
454 }
455
456 static void xhci_mfwrap_timer(void *opaque)
457 {
458 XHCIState *xhci = opaque;
459 XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS };
460
461 xhci_event(xhci, &wrap, 0);
462 xhci_mfwrap_update(xhci);
463 }
464
465 static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
466 {
467 if (sizeof(dma_addr_t) == 4) {
468 return low;
469 } else {
470 return low | (((dma_addr_t)high << 16) << 16);
471 }
472 }
473
474 static inline dma_addr_t xhci_mask64(uint64_t addr)
475 {
476 if (sizeof(dma_addr_t) == 4) {
477 return addr & 0xffffffff;
478 } else {
479 return addr;
480 }
481 }
482
483 static inline void xhci_dma_read_u32s(XHCIState *xhci, dma_addr_t addr,
484 uint32_t *buf, size_t len)
485 {
486 int i;
487
488 assert((len % sizeof(uint32_t)) == 0);
489
490 dma_memory_read(xhci->as, addr, buf, len);
491
492 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
493 buf[i] = le32_to_cpu(buf[i]);
494 }
495 }
496
497 static inline void xhci_dma_write_u32s(XHCIState *xhci, dma_addr_t addr,
498 uint32_t *buf, size_t len)
499 {
500 int i;
501 uint32_t tmp[5];
502 uint32_t n = len / sizeof(uint32_t);
503
504 assert((len % sizeof(uint32_t)) == 0);
505 assert(n <= ARRAY_SIZE(tmp));
506
507 for (i = 0; i < n; i++) {
508 tmp[i] = cpu_to_le32(buf[i]);
509 }
510 dma_memory_write(xhci->as, addr, tmp, len);
511 }
512
513 static XHCIPort *xhci_lookup_port(XHCIState *xhci, struct USBPort *uport)
514 {
515 int index;
516
517 if (!uport->dev) {
518 return NULL;
519 }
520 switch (uport->dev->speed) {
521 case USB_SPEED_LOW:
522 case USB_SPEED_FULL:
523 case USB_SPEED_HIGH:
524 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
525 index = uport->index + xhci->numports_3;
526 } else {
527 index = uport->index;
528 }
529 break;
530 case USB_SPEED_SUPER:
531 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
532 index = uport->index;
533 } else {
534 index = uport->index + xhci->numports_2;
535 }
536 break;
537 default:
538 return NULL;
539 }
540 return &xhci->ports[index];
541 }
542
543 static void xhci_intr_update(XHCIState *xhci, int v)
544 {
545 int level = 0;
546
547 if (v == 0) {
548 if (xhci->intr[0].iman & IMAN_IP &&
549 xhci->intr[0].iman & IMAN_IE &&
550 xhci->usbcmd & USBCMD_INTE) {
551 level = 1;
552 }
553 if (xhci->intr_raise) {
554 xhci->intr_raise(xhci, 0, level);
555 }
556 }
557 if (xhci->intr_update) {
558 xhci->intr_update(xhci, v,
559 xhci->intr[v].iman & IMAN_IE);
560 }
561 }
562
563 static void xhci_intr_raise(XHCIState *xhci, int v)
564 {
565 bool pending = (xhci->intr[v].erdp_low & ERDP_EHB);
566
567 xhci->intr[v].erdp_low |= ERDP_EHB;
568 xhci->intr[v].iman |= IMAN_IP;
569 xhci->usbsts |= USBSTS_EINT;
570
571 if (pending) {
572 return;
573 }
574 if (!(xhci->intr[v].iman & IMAN_IE)) {
575 return;
576 }
577
578 if (!(xhci->usbcmd & USBCMD_INTE)) {
579 return;
580 }
581 if (xhci->intr_raise) {
582 xhci->intr_raise(xhci, v, true);
583 }
584 }
585
586 static inline int xhci_running(XHCIState *xhci)
587 {
588 return !(xhci->usbsts & USBSTS_HCH);
589 }
590
591 static void xhci_die(XHCIState *xhci)
592 {
593 xhci->usbsts |= USBSTS_HCE;
594 DPRINTF("xhci: asserted controller error\n");
595 }
596
597 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v)
598 {
599 XHCIInterrupter *intr = &xhci->intr[v];
600 XHCITRB ev_trb;
601 dma_addr_t addr;
602
603 ev_trb.parameter = cpu_to_le64(event->ptr);
604 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
605 ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
606 event->flags | (event->type << TRB_TYPE_SHIFT);
607 if (intr->er_pcs) {
608 ev_trb.control |= TRB_C;
609 }
610 ev_trb.control = cpu_to_le32(ev_trb.control);
611
612 trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb),
613 event_name(event), ev_trb.parameter,
614 ev_trb.status, ev_trb.control);
615
616 addr = intr->er_start + TRB_SIZE*intr->er_ep_idx;
617 dma_memory_write(xhci->as, addr, &ev_trb, TRB_SIZE);
618
619 intr->er_ep_idx++;
620 if (intr->er_ep_idx >= intr->er_size) {
621 intr->er_ep_idx = 0;
622 intr->er_pcs = !intr->er_pcs;
623 }
624 }
625
626 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v)
627 {
628 XHCIInterrupter *intr;
629 dma_addr_t erdp;
630 unsigned int dp_idx;
631
632 if (v >= xhci->numintrs) {
633 DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs);
634 return;
635 }
636 intr = &xhci->intr[v];
637
638 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
639 if (erdp < intr->er_start ||
640 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) {
641 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
642 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n",
643 v, intr->er_start, intr->er_size);
644 xhci_die(xhci);
645 return;
646 }
647
648 dp_idx = (erdp - intr->er_start) / TRB_SIZE;
649 assert(dp_idx < intr->er_size);
650
651 if ((intr->er_ep_idx + 2) % intr->er_size == dp_idx) {
652 DPRINTF("xhci: ER %d full, send ring full error\n", v);
653 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
654 xhci_write_event(xhci, &full, v);
655 } else if ((intr->er_ep_idx + 1) % intr->er_size == dp_idx) {
656 DPRINTF("xhci: ER %d full, drop event\n", v);
657 } else {
658 xhci_write_event(xhci, event, v);
659 }
660
661 xhci_intr_raise(xhci, v);
662 }
663
664 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring,
665 dma_addr_t base)
666 {
667 ring->dequeue = base;
668 ring->ccs = 1;
669 }
670
671 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
672 dma_addr_t *addr)
673 {
674 uint32_t link_cnt = 0;
675
676 while (1) {
677 TRBType type;
678 dma_memory_read(xhci->as, ring->dequeue, trb, TRB_SIZE);
679 trb->addr = ring->dequeue;
680 trb->ccs = ring->ccs;
681 le64_to_cpus(&trb->parameter);
682 le32_to_cpus(&trb->status);
683 le32_to_cpus(&trb->control);
684
685 trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb),
686 trb->parameter, trb->status, trb->control);
687
688 if ((trb->control & TRB_C) != ring->ccs) {
689 return 0;
690 }
691
692 type = TRB_TYPE(*trb);
693
694 if (type != TR_LINK) {
695 if (addr) {
696 *addr = ring->dequeue;
697 }
698 ring->dequeue += TRB_SIZE;
699 return type;
700 } else {
701 if (++link_cnt > TRB_LINK_LIMIT) {
702 trace_usb_xhci_enforced_limit("trb-link");
703 return 0;
704 }
705 ring->dequeue = xhci_mask64(trb->parameter);
706 if (trb->control & TRB_LK_TC) {
707 ring->ccs = !ring->ccs;
708 }
709 }
710 }
711 }
712
713 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
714 {
715 XHCITRB trb;
716 int length = 0;
717 dma_addr_t dequeue = ring->dequeue;
718 bool ccs = ring->ccs;
719 /* hack to bundle together the two/three TDs that make a setup transfer */
720 bool control_td_set = 0;
721 uint32_t link_cnt = 0;
722
723 while (1) {
724 TRBType type;
725 dma_memory_read(xhci->as, dequeue, &trb, TRB_SIZE);
726 le64_to_cpus(&trb.parameter);
727 le32_to_cpus(&trb.status);
728 le32_to_cpus(&trb.control);
729
730 if ((trb.control & TRB_C) != ccs) {
731 return -length;
732 }
733
734 type = TRB_TYPE(trb);
735
736 if (type == TR_LINK) {
737 if (++link_cnt > TRB_LINK_LIMIT) {
738 return -length;
739 }
740 dequeue = xhci_mask64(trb.parameter);
741 if (trb.control & TRB_LK_TC) {
742 ccs = !ccs;
743 }
744 continue;
745 }
746
747 length += 1;
748 dequeue += TRB_SIZE;
749
750 if (type == TR_SETUP) {
751 control_td_set = 1;
752 } else if (type == TR_STATUS) {
753 control_td_set = 0;
754 }
755
756 if (!control_td_set && !(trb.control & TRB_TR_CH)) {
757 return length;
758 }
759 }
760 }
761
762 static void xhci_er_reset(XHCIState *xhci, int v)
763 {
764 XHCIInterrupter *intr = &xhci->intr[v];
765 XHCIEvRingSeg seg;
766 dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high);
767
768 if (intr->erstsz == 0 || erstba == 0) {
769 /* disabled */
770 intr->er_start = 0;
771 intr->er_size = 0;
772 return;
773 }
774 /* cache the (sole) event ring segment location */
775 if (intr->erstsz != 1) {
776 DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz);
777 xhci_die(xhci);
778 return;
779 }
780 dma_memory_read(xhci->as, erstba, &seg, sizeof(seg));
781 le32_to_cpus(&seg.addr_low);
782 le32_to_cpus(&seg.addr_high);
783 le32_to_cpus(&seg.size);
784 if (seg.size < 16 || seg.size > 4096) {
785 DPRINTF("xhci: invalid value for segment size: %d\n", seg.size);
786 xhci_die(xhci);
787 return;
788 }
789 intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high);
790 intr->er_size = seg.size;
791
792 intr->er_ep_idx = 0;
793 intr->er_pcs = 1;
794
795 DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n",
796 v, intr->er_start, intr->er_size);
797 }
798
799 static void xhci_run(XHCIState *xhci)
800 {
801 trace_usb_xhci_run();
802 xhci->usbsts &= ~USBSTS_HCH;
803 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
804 }
805
806 static void xhci_stop(XHCIState *xhci)
807 {
808 trace_usb_xhci_stop();
809 xhci->usbsts |= USBSTS_HCH;
810 xhci->crcr_low &= ~CRCR_CRR;
811 }
812
813 static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count,
814 dma_addr_t base)
815 {
816 XHCIStreamContext *stctx;
817 unsigned int i;
818
819 stctx = g_new0(XHCIStreamContext, count);
820 for (i = 0; i < count; i++) {
821 stctx[i].pctx = base + i * 16;
822 stctx[i].sct = -1;
823 }
824 return stctx;
825 }
826
827 static void xhci_reset_streams(XHCIEPContext *epctx)
828 {
829 unsigned int i;
830
831 for (i = 0; i < epctx->nr_pstreams; i++) {
832 epctx->pstreams[i].sct = -1;
833 }
834 }
835
836 static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base)
837 {
838 assert(epctx->pstreams == NULL);
839 epctx->nr_pstreams = 2 << epctx->max_pstreams;
840 epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base);
841 }
842
843 static void xhci_free_streams(XHCIEPContext *epctx)
844 {
845 assert(epctx->pstreams != NULL);
846
847 g_free(epctx->pstreams);
848 epctx->pstreams = NULL;
849 epctx->nr_pstreams = 0;
850 }
851
852 static int xhci_epmask_to_eps_with_streams(XHCIState *xhci,
853 unsigned int slotid,
854 uint32_t epmask,
855 XHCIEPContext **epctxs,
856 USBEndpoint **eps)
857 {
858 XHCISlot *slot;
859 XHCIEPContext *epctx;
860 USBEndpoint *ep;
861 int i, j;
862
863 assert(slotid >= 1 && slotid <= xhci->numslots);
864
865 slot = &xhci->slots[slotid - 1];
866
867 for (i = 2, j = 0; i <= 31; i++) {
868 if (!(epmask & (1u << i))) {
869 continue;
870 }
871
872 epctx = slot->eps[i - 1];
873 ep = xhci_epid_to_usbep(epctx);
874 if (!epctx || !epctx->nr_pstreams || !ep) {
875 continue;
876 }
877
878 if (epctxs) {
879 epctxs[j] = epctx;
880 }
881 eps[j++] = ep;
882 }
883 return j;
884 }
885
886 static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid,
887 uint32_t epmask)
888 {
889 USBEndpoint *eps[30];
890 int nr_eps;
891
892 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps);
893 if (nr_eps) {
894 usb_device_free_streams(eps[0]->dev, eps, nr_eps);
895 }
896 }
897
898 static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid,
899 uint32_t epmask)
900 {
901 XHCIEPContext *epctxs[30];
902 USBEndpoint *eps[30];
903 int i, r, nr_eps, req_nr_streams, dev_max_streams;
904
905 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs,
906 eps);
907 if (nr_eps == 0) {
908 return CC_SUCCESS;
909 }
910
911 req_nr_streams = epctxs[0]->nr_pstreams;
912 dev_max_streams = eps[0]->max_streams;
913
914 for (i = 1; i < nr_eps; i++) {
915 /*
916 * HdG: I don't expect these to ever trigger, but if they do we need
917 * to come up with another solution, ie group identical endpoints
918 * together and make an usb_device_alloc_streams call per group.
919 */
920 if (epctxs[i]->nr_pstreams != req_nr_streams) {
921 FIXME("guest streams config not identical for all eps");
922 return CC_RESOURCE_ERROR;
923 }
924 if (eps[i]->max_streams != dev_max_streams) {
925 FIXME("device streams config not identical for all eps");
926 return CC_RESOURCE_ERROR;
927 }
928 }
929
930 /*
931 * max-streams in both the device descriptor and in the controller is a
932 * power of 2. But stream id 0 is reserved, so if a device can do up to 4
933 * streams the guest will ask for 5 rounded up to the next power of 2 which
934 * becomes 8. For emulated devices usb_device_alloc_streams is a nop.
935 *
936 * For redirected devices however this is an issue, as there we must ask
937 * the real xhci controller to alloc streams, and the host driver for the
938 * real xhci controller will likely disallow allocating more streams then
939 * the device can handle.
940 *
941 * So we limit the requested nr_streams to the maximum number the device
942 * can handle.
943 */
944 if (req_nr_streams > dev_max_streams) {
945 req_nr_streams = dev_max_streams;
946 }
947
948 r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams);
949 if (r != 0) {
950 DPRINTF("xhci: alloc streams failed\n");
951 return CC_RESOURCE_ERROR;
952 }
953
954 return CC_SUCCESS;
955 }
956
957 static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx,
958 unsigned int streamid,
959 uint32_t *cc_error)
960 {
961 XHCIStreamContext *sctx;
962 dma_addr_t base;
963 uint32_t ctx[2], sct;
964
965 assert(streamid != 0);
966 if (epctx->lsa) {
967 if (streamid >= epctx->nr_pstreams) {
968 *cc_error = CC_INVALID_STREAM_ID_ERROR;
969 return NULL;
970 }
971 sctx = epctx->pstreams + streamid;
972 } else {
973 FIXME("secondary streams not implemented yet");
974 }
975
976 if (sctx->sct == -1) {
977 xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx));
978 sct = (ctx[0] >> 1) & 0x07;
979 if (epctx->lsa && sct != 1) {
980 *cc_error = CC_INVALID_STREAM_TYPE_ERROR;
981 return NULL;
982 }
983 sctx->sct = sct;
984 base = xhci_addr64(ctx[0] & ~0xf, ctx[1]);
985 xhci_ring_init(epctx->xhci, &sctx->ring, base);
986 }
987 return sctx;
988 }
989
990 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
991 XHCIStreamContext *sctx, uint32_t state)
992 {
993 XHCIRing *ring = NULL;
994 uint32_t ctx[5];
995 uint32_t ctx2[2];
996
997 xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
998 ctx[0] &= ~EP_STATE_MASK;
999 ctx[0] |= state;
1000
1001 /* update ring dequeue ptr */
1002 if (epctx->nr_pstreams) {
1003 if (sctx != NULL) {
1004 ring = &sctx->ring;
1005 xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1006 ctx2[0] &= 0xe;
1007 ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs;
1008 ctx2[1] = (sctx->ring.dequeue >> 16) >> 16;
1009 xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1010 }
1011 } else {
1012 ring = &epctx->ring;
1013 }
1014 if (ring) {
1015 ctx[2] = ring->dequeue | ring->ccs;
1016 ctx[3] = (ring->dequeue >> 16) >> 16;
1017
1018 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n",
1019 epctx->pctx, state, ctx[3], ctx[2]);
1020 }
1021
1022 xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1023 if (epctx->state != state) {
1024 trace_usb_xhci_ep_state(epctx->slotid, epctx->epid,
1025 ep_state_name(epctx->state),
1026 ep_state_name(state));
1027 }
1028 epctx->state = state;
1029 }
1030
1031 static void xhci_ep_kick_timer(void *opaque)
1032 {
1033 XHCIEPContext *epctx = opaque;
1034 xhci_kick_epctx(epctx, 0);
1035 }
1036
1037 static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci,
1038 unsigned int slotid,
1039 unsigned int epid)
1040 {
1041 XHCIEPContext *epctx;
1042
1043 epctx = g_new0(XHCIEPContext, 1);
1044 epctx->xhci = xhci;
1045 epctx->slotid = slotid;
1046 epctx->epid = epid;
1047
1048 QTAILQ_INIT(&epctx->transfers);
1049 epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx);
1050
1051 return epctx;
1052 }
1053
1054 static void xhci_init_epctx(XHCIEPContext *epctx,
1055 dma_addr_t pctx, uint32_t *ctx)
1056 {
1057 dma_addr_t dequeue;
1058
1059 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
1060
1061 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK;
1062 epctx->pctx = pctx;
1063 epctx->max_psize = ctx[1]>>16;
1064 epctx->max_psize *= 1+((ctx[1]>>8)&0xff);
1065 epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask;
1066 epctx->lsa = (ctx[0] >> 15) & 1;
1067 if (epctx->max_pstreams) {
1068 xhci_alloc_streams(epctx, dequeue);
1069 } else {
1070 xhci_ring_init(epctx->xhci, &epctx->ring, dequeue);
1071 epctx->ring.ccs = ctx[2] & 1;
1072 }
1073
1074 epctx->interval = 1 << ((ctx[0] >> 16) & 0xff);
1075 }
1076
1077 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
1078 unsigned int epid, dma_addr_t pctx,
1079 uint32_t *ctx)
1080 {
1081 XHCISlot *slot;
1082 XHCIEPContext *epctx;
1083
1084 trace_usb_xhci_ep_enable(slotid, epid);
1085 assert(slotid >= 1 && slotid <= xhci->numslots);
1086 assert(epid >= 1 && epid <= 31);
1087
1088 slot = &xhci->slots[slotid-1];
1089 if (slot->eps[epid-1]) {
1090 xhci_disable_ep(xhci, slotid, epid);
1091 }
1092
1093 epctx = xhci_alloc_epctx(xhci, slotid, epid);
1094 slot->eps[epid-1] = epctx;
1095 xhci_init_epctx(epctx, pctx, ctx);
1096
1097 DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) "
1098 "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize);
1099
1100 epctx->mfindex_last = 0;
1101
1102 epctx->state = EP_RUNNING;
1103 ctx[0] &= ~EP_STATE_MASK;
1104 ctx[0] |= EP_RUNNING;
1105
1106 return CC_SUCCESS;
1107 }
1108
1109 static XHCITransfer *xhci_ep_alloc_xfer(XHCIEPContext *epctx,
1110 uint32_t length)
1111 {
1112 uint32_t limit = epctx->nr_pstreams + 16;
1113 XHCITransfer *xfer;
1114
1115 if (epctx->xfer_count >= limit) {
1116 return NULL;
1117 }
1118
1119 xfer = g_new0(XHCITransfer, 1);
1120 xfer->epctx = epctx;
1121 xfer->trbs = g_new(XHCITRB, length);
1122 xfer->trb_count = length;
1123 usb_packet_init(&xfer->packet);
1124
1125 QTAILQ_INSERT_TAIL(&epctx->transfers, xfer, next);
1126 epctx->xfer_count++;
1127
1128 return xfer;
1129 }
1130
1131 static void xhci_ep_free_xfer(XHCITransfer *xfer)
1132 {
1133 QTAILQ_REMOVE(&xfer->epctx->transfers, xfer, next);
1134 xfer->epctx->xfer_count--;
1135
1136 usb_packet_cleanup(&xfer->packet);
1137 g_free(xfer->trbs);
1138 g_free(xfer);
1139 }
1140
1141 static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report)
1142 {
1143 int killed = 0;
1144
1145 if (report && (t->running_async || t->running_retry)) {
1146 t->status = report;
1147 xhci_xfer_report(t);
1148 }
1149
1150 if (t->running_async) {
1151 usb_cancel_packet(&t->packet);
1152 t->running_async = 0;
1153 killed = 1;
1154 }
1155 if (t->running_retry) {
1156 if (t->epctx) {
1157 t->epctx->retry = NULL;
1158 timer_del(t->epctx->kick_timer);
1159 }
1160 t->running_retry = 0;
1161 killed = 1;
1162 }
1163 g_free(t->trbs);
1164
1165 t->trbs = NULL;
1166 t->trb_count = 0;
1167
1168 return killed;
1169 }
1170
1171 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
1172 unsigned int epid, TRBCCode report)
1173 {
1174 XHCISlot *slot;
1175 XHCIEPContext *epctx;
1176 XHCITransfer *xfer;
1177 int killed = 0;
1178 USBEndpoint *ep = NULL;
1179 assert(slotid >= 1 && slotid <= xhci->numslots);
1180 assert(epid >= 1 && epid <= 31);
1181
1182 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid);
1183
1184 slot = &xhci->slots[slotid-1];
1185
1186 if (!slot->eps[epid-1]) {
1187 return 0;
1188 }
1189
1190 epctx = slot->eps[epid-1];
1191
1192 for (;;) {
1193 xfer = QTAILQ_FIRST(&epctx->transfers);
1194 if (xfer == NULL) {
1195 break;
1196 }
1197 killed += xhci_ep_nuke_one_xfer(xfer, report);
1198 if (killed) {
1199 report = 0; /* Only report once */
1200 }
1201 xhci_ep_free_xfer(xfer);
1202 }
1203
1204 ep = xhci_epid_to_usbep(epctx);
1205 if (ep) {
1206 usb_device_ep_stopped(ep->dev, ep);
1207 }
1208 return killed;
1209 }
1210
1211 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
1212 unsigned int epid)
1213 {
1214 XHCISlot *slot;
1215 XHCIEPContext *epctx;
1216
1217 trace_usb_xhci_ep_disable(slotid, epid);
1218 assert(slotid >= 1 && slotid <= xhci->numslots);
1219 assert(epid >= 1 && epid <= 31);
1220
1221 slot = &xhci->slots[slotid-1];
1222
1223 if (!slot->eps[epid-1]) {
1224 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid);
1225 return CC_SUCCESS;
1226 }
1227
1228 xhci_ep_nuke_xfers(xhci, slotid, epid, 0);
1229
1230 epctx = slot->eps[epid-1];
1231
1232 if (epctx->nr_pstreams) {
1233 xhci_free_streams(epctx);
1234 }
1235
1236 /* only touch guest RAM if we're not resetting the HC */
1237 if (xhci->dcbaap_low || xhci->dcbaap_high) {
1238 xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED);
1239 }
1240
1241 timer_free(epctx->kick_timer);
1242 g_free(epctx);
1243 slot->eps[epid-1] = NULL;
1244
1245 return CC_SUCCESS;
1246 }
1247
1248 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
1249 unsigned int epid)
1250 {
1251 XHCISlot *slot;
1252 XHCIEPContext *epctx;
1253
1254 trace_usb_xhci_ep_stop(slotid, epid);
1255 assert(slotid >= 1 && slotid <= xhci->numslots);
1256
1257 if (epid < 1 || epid > 31) {
1258 DPRINTF("xhci: bad ep %d\n", epid);
1259 return CC_TRB_ERROR;
1260 }
1261
1262 slot = &xhci->slots[slotid-1];
1263
1264 if (!slot->eps[epid-1]) {
1265 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1266 return CC_EP_NOT_ENABLED_ERROR;
1267 }
1268
1269 if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) {
1270 DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, "
1271 "data might be lost\n");
1272 }
1273
1274 epctx = slot->eps[epid-1];
1275
1276 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1277
1278 if (epctx->nr_pstreams) {
1279 xhci_reset_streams(epctx);
1280 }
1281
1282 return CC_SUCCESS;
1283 }
1284
1285 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
1286 unsigned int epid)
1287 {
1288 XHCISlot *slot;
1289 XHCIEPContext *epctx;
1290
1291 trace_usb_xhci_ep_reset(slotid, epid);
1292 assert(slotid >= 1 && slotid <= xhci->numslots);
1293
1294 if (epid < 1 || epid > 31) {
1295 DPRINTF("xhci: bad ep %d\n", epid);
1296 return CC_TRB_ERROR;
1297 }
1298
1299 slot = &xhci->slots[slotid-1];
1300
1301 if (!slot->eps[epid-1]) {
1302 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1303 return CC_EP_NOT_ENABLED_ERROR;
1304 }
1305
1306 epctx = slot->eps[epid-1];
1307
1308 if (epctx->state != EP_HALTED) {
1309 DPRINTF("xhci: reset EP while EP %d not halted (%d)\n",
1310 epid, epctx->state);
1311 return CC_CONTEXT_STATE_ERROR;
1312 }
1313
1314 if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) {
1315 DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, "
1316 "data might be lost\n");
1317 }
1318
1319 if (!xhci->slots[slotid-1].uport ||
1320 !xhci->slots[slotid-1].uport->dev ||
1321 !xhci->slots[slotid-1].uport->dev->attached) {
1322 return CC_USB_TRANSACTION_ERROR;
1323 }
1324
1325 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1326
1327 if (epctx->nr_pstreams) {
1328 xhci_reset_streams(epctx);
1329 }
1330
1331 return CC_SUCCESS;
1332 }
1333
1334 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid,
1335 unsigned int epid, unsigned int streamid,
1336 uint64_t pdequeue)
1337 {
1338 XHCISlot *slot;
1339 XHCIEPContext *epctx;
1340 XHCIStreamContext *sctx;
1341 dma_addr_t dequeue;
1342
1343 assert(slotid >= 1 && slotid <= xhci->numslots);
1344
1345 if (epid < 1 || epid > 31) {
1346 DPRINTF("xhci: bad ep %d\n", epid);
1347 return CC_TRB_ERROR;
1348 }
1349
1350 trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue);
1351 dequeue = xhci_mask64(pdequeue);
1352
1353 slot = &xhci->slots[slotid-1];
1354
1355 if (!slot->eps[epid-1]) {
1356 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1357 return CC_EP_NOT_ENABLED_ERROR;
1358 }
1359
1360 epctx = slot->eps[epid-1];
1361
1362 if (epctx->state != EP_STOPPED) {
1363 DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid);
1364 return CC_CONTEXT_STATE_ERROR;
1365 }
1366
1367 if (epctx->nr_pstreams) {
1368 uint32_t err;
1369 sctx = xhci_find_stream(epctx, streamid, &err);
1370 if (sctx == NULL) {
1371 return err;
1372 }
1373 xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf);
1374 sctx->ring.ccs = dequeue & 1;
1375 } else {
1376 sctx = NULL;
1377 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF);
1378 epctx->ring.ccs = dequeue & 1;
1379 }
1380
1381 xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED);
1382
1383 return CC_SUCCESS;
1384 }
1385
1386 static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer)
1387 {
1388 XHCIState *xhci = xfer->epctx->xhci;
1389 int i;
1390
1391 xfer->int_req = false;
1392 qemu_sglist_init(&xfer->sgl, DEVICE(xhci), xfer->trb_count, xhci->as);
1393 for (i = 0; i < xfer->trb_count; i++) {
1394 XHCITRB *trb = &xfer->trbs[i];
1395 dma_addr_t addr;
1396 unsigned int chunk = 0;
1397
1398 if (trb->control & TRB_TR_IOC) {
1399 xfer->int_req = true;
1400 }
1401
1402 switch (TRB_TYPE(*trb)) {
1403 case TR_DATA:
1404 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) {
1405 DPRINTF("xhci: data direction mismatch for TR_DATA\n");
1406 goto err;
1407 }
1408 /* fallthrough */
1409 case TR_NORMAL:
1410 case TR_ISOCH:
1411 addr = xhci_mask64(trb->parameter);
1412 chunk = trb->status & 0x1ffff;
1413 if (trb->control & TRB_TR_IDT) {
1414 if (chunk > 8 || in_xfer) {
1415 DPRINTF("xhci: invalid immediate data TRB\n");
1416 goto err;
1417 }
1418 qemu_sglist_add(&xfer->sgl, trb->addr, chunk);
1419 } else {
1420 qemu_sglist_add(&xfer->sgl, addr, chunk);
1421 }
1422 break;
1423 }
1424 }
1425
1426 return 0;
1427
1428 err:
1429 qemu_sglist_destroy(&xfer->sgl);
1430 xhci_die(xhci);
1431 return -1;
1432 }
1433
1434 static void xhci_xfer_unmap(XHCITransfer *xfer)
1435 {
1436 usb_packet_unmap(&xfer->packet, &xfer->sgl);
1437 qemu_sglist_destroy(&xfer->sgl);
1438 }
1439
1440 static void xhci_xfer_report(XHCITransfer *xfer)
1441 {
1442 uint32_t edtla = 0;
1443 unsigned int left;
1444 bool reported = 0;
1445 bool shortpkt = 0;
1446 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS};
1447 XHCIState *xhci = xfer->epctx->xhci;
1448 int i;
1449
1450 left = xfer->packet.actual_length;
1451
1452 for (i = 0; i < xfer->trb_count; i++) {
1453 XHCITRB *trb = &xfer->trbs[i];
1454 unsigned int chunk = 0;
1455
1456 switch (TRB_TYPE(*trb)) {
1457 case TR_SETUP:
1458 chunk = trb->status & 0x1ffff;
1459 if (chunk > 8) {
1460 chunk = 8;
1461 }
1462 break;
1463 case TR_DATA:
1464 case TR_NORMAL:
1465 case TR_ISOCH:
1466 chunk = trb->status & 0x1ffff;
1467 if (chunk > left) {
1468 chunk = left;
1469 if (xfer->status == CC_SUCCESS) {
1470 shortpkt = 1;
1471 }
1472 }
1473 left -= chunk;
1474 edtla += chunk;
1475 break;
1476 case TR_STATUS:
1477 reported = 0;
1478 shortpkt = 0;
1479 break;
1480 }
1481
1482 if (!reported && ((trb->control & TRB_TR_IOC) ||
1483 (shortpkt && (trb->control & TRB_TR_ISP)) ||
1484 (xfer->status != CC_SUCCESS && left == 0))) {
1485 event.slotid = xfer->epctx->slotid;
1486 event.epid = xfer->epctx->epid;
1487 event.length = (trb->status & 0x1ffff) - chunk;
1488 event.flags = 0;
1489 event.ptr = trb->addr;
1490 if (xfer->status == CC_SUCCESS) {
1491 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS;
1492 } else {
1493 event.ccode = xfer->status;
1494 }
1495 if (TRB_TYPE(*trb) == TR_EVDATA) {
1496 event.ptr = trb->parameter;
1497 event.flags |= TRB_EV_ED;
1498 event.length = edtla & 0xffffff;
1499 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length);
1500 edtla = 0;
1501 }
1502 xhci_event(xhci, &event, TRB_INTR(*trb));
1503 reported = 1;
1504 if (xfer->status != CC_SUCCESS) {
1505 return;
1506 }
1507 }
1508
1509 switch (TRB_TYPE(*trb)) {
1510 case TR_SETUP:
1511 reported = 0;
1512 shortpkt = 0;
1513 break;
1514 }
1515
1516 }
1517 }
1518
1519 static void xhci_stall_ep(XHCITransfer *xfer)
1520 {
1521 XHCIEPContext *epctx = xfer->epctx;
1522 XHCIState *xhci = epctx->xhci;
1523 uint32_t err;
1524 XHCIStreamContext *sctx;
1525
1526 if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
1527 /* never halt isoch endpoints, 4.10.2 */
1528 return;
1529 }
1530
1531 if (epctx->nr_pstreams) {
1532 sctx = xhci_find_stream(epctx, xfer->streamid, &err);
1533 if (sctx == NULL) {
1534 return;
1535 }
1536 sctx->ring.dequeue = xfer->trbs[0].addr;
1537 sctx->ring.ccs = xfer->trbs[0].ccs;
1538 xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED);
1539 } else {
1540 epctx->ring.dequeue = xfer->trbs[0].addr;
1541 epctx->ring.ccs = xfer->trbs[0].ccs;
1542 xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED);
1543 }
1544 }
1545
1546 static int xhci_setup_packet(XHCITransfer *xfer)
1547 {
1548 USBEndpoint *ep;
1549 int dir;
1550
1551 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT;
1552
1553 if (xfer->packet.ep) {
1554 ep = xfer->packet.ep;
1555 } else {
1556 ep = xhci_epid_to_usbep(xfer->epctx);
1557 if (!ep) {
1558 DPRINTF("xhci: slot %d has no device\n",
1559 xfer->epctx->slotid);
1560 return -1;
1561 }
1562 }
1563
1564 xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */
1565 usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid,
1566 xfer->trbs[0].addr, false, xfer->int_req);
1567 if (usb_packet_map(&xfer->packet, &xfer->sgl)) {
1568 qemu_sglist_destroy(&xfer->sgl);
1569 return -1;
1570 }
1571 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
1572 xfer->packet.pid, ep->dev->addr, ep->nr);
1573 return 0;
1574 }
1575
1576 static int xhci_try_complete_packet(XHCITransfer *xfer)
1577 {
1578 if (xfer->packet.status == USB_RET_ASYNC) {
1579 trace_usb_xhci_xfer_async(xfer);
1580 xfer->running_async = 1;
1581 xfer->running_retry = 0;
1582 xfer->complete = 0;
1583 return 0;
1584 } else if (xfer->packet.status == USB_RET_NAK) {
1585 trace_usb_xhci_xfer_nak(xfer);
1586 xfer->running_async = 0;
1587 xfer->running_retry = 1;
1588 xfer->complete = 0;
1589 return 0;
1590 } else {
1591 xfer->running_async = 0;
1592 xfer->running_retry = 0;
1593 xfer->complete = 1;
1594 xhci_xfer_unmap(xfer);
1595 }
1596
1597 if (xfer->packet.status == USB_RET_SUCCESS) {
1598 trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length);
1599 xfer->status = CC_SUCCESS;
1600 xhci_xfer_report(xfer);
1601 return 0;
1602 }
1603
1604 /* error */
1605 trace_usb_xhci_xfer_error(xfer, xfer->packet.status);
1606 switch (xfer->packet.status) {
1607 case USB_RET_NODEV:
1608 case USB_RET_IOERROR:
1609 xfer->status = CC_USB_TRANSACTION_ERROR;
1610 xhci_xfer_report(xfer);
1611 xhci_stall_ep(xfer);
1612 break;
1613 case USB_RET_STALL:
1614 xfer->status = CC_STALL_ERROR;
1615 xhci_xfer_report(xfer);
1616 xhci_stall_ep(xfer);
1617 break;
1618 case USB_RET_BABBLE:
1619 xfer->status = CC_BABBLE_DETECTED;
1620 xhci_xfer_report(xfer);
1621 xhci_stall_ep(xfer);
1622 break;
1623 default:
1624 DPRINTF("%s: FIXME: status = %d\n", __func__,
1625 xfer->packet.status);
1626 FIXME("unhandled USB_RET_*");
1627 }
1628 return 0;
1629 }
1630
1631 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
1632 {
1633 XHCITRB *trb_setup, *trb_status;
1634 uint8_t bmRequestType;
1635
1636 trb_setup = &xfer->trbs[0];
1637 trb_status = &xfer->trbs[xfer->trb_count-1];
1638
1639 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1640 xfer->epctx->epid, xfer->streamid);
1641
1642 /* at most one Event Data TRB allowed after STATUS */
1643 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) {
1644 trb_status--;
1645 }
1646
1647 /* do some sanity checks */
1648 if (TRB_TYPE(*trb_setup) != TR_SETUP) {
1649 DPRINTF("xhci: ep0 first TD not SETUP: %d\n",
1650 TRB_TYPE(*trb_setup));
1651 return -1;
1652 }
1653 if (TRB_TYPE(*trb_status) != TR_STATUS) {
1654 DPRINTF("xhci: ep0 last TD not STATUS: %d\n",
1655 TRB_TYPE(*trb_status));
1656 return -1;
1657 }
1658 if (!(trb_setup->control & TRB_TR_IDT)) {
1659 DPRINTF("xhci: Setup TRB doesn't have IDT set\n");
1660 return -1;
1661 }
1662 if ((trb_setup->status & 0x1ffff) != 8) {
1663 DPRINTF("xhci: Setup TRB has bad length (%d)\n",
1664 (trb_setup->status & 0x1ffff));
1665 return -1;
1666 }
1667
1668 bmRequestType = trb_setup->parameter;
1669
1670 xfer->in_xfer = bmRequestType & USB_DIR_IN;
1671 xfer->iso_xfer = false;
1672 xfer->timed_xfer = false;
1673
1674 if (xhci_setup_packet(xfer) < 0) {
1675 return -1;
1676 }
1677 xfer->packet.parameter = trb_setup->parameter;
1678
1679 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1680 xhci_try_complete_packet(xfer);
1681 return 0;
1682 }
1683
1684 static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer,
1685 XHCIEPContext *epctx, uint64_t mfindex)
1686 {
1687 uint64_t asap = ((mfindex + epctx->interval - 1) &
1688 ~(epctx->interval-1));
1689 uint64_t kick = epctx->mfindex_last + epctx->interval;
1690
1691 assert(epctx->interval != 0);
1692 xfer->mfindex_kick = MAX(asap, kick);
1693 }
1694
1695 static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1696 XHCIEPContext *epctx, uint64_t mfindex)
1697 {
1698 if (xfer->trbs[0].control & TRB_TR_SIA) {
1699 uint64_t asap = ((mfindex + epctx->interval - 1) &
1700 ~(epctx->interval-1));
1701 if (asap >= epctx->mfindex_last &&
1702 asap <= epctx->mfindex_last + epctx->interval * 4) {
1703 xfer->mfindex_kick = epctx->mfindex_last + epctx->interval;
1704 } else {
1705 xfer->mfindex_kick = asap;
1706 }
1707 } else {
1708 xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
1709 & TRB_TR_FRAMEID_MASK) << 3;
1710 xfer->mfindex_kick |= mfindex & ~0x3fff;
1711 if (xfer->mfindex_kick + 0x100 < mfindex) {
1712 xfer->mfindex_kick += 0x4000;
1713 }
1714 }
1715 }
1716
1717 static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1718 XHCIEPContext *epctx, uint64_t mfindex)
1719 {
1720 if (xfer->mfindex_kick > mfindex) {
1721 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1722 (xfer->mfindex_kick - mfindex) * 125000);
1723 xfer->running_retry = 1;
1724 } else {
1725 epctx->mfindex_last = xfer->mfindex_kick;
1726 timer_del(epctx->kick_timer);
1727 xfer->running_retry = 0;
1728 }
1729 }
1730
1731
1732 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1733 {
1734 uint64_t mfindex;
1735
1736 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", epctx->slotid, epctx->epid);
1737
1738 xfer->in_xfer = epctx->type>>2;
1739
1740 switch(epctx->type) {
1741 case ET_INTR_OUT:
1742 case ET_INTR_IN:
1743 xfer->pkts = 0;
1744 xfer->iso_xfer = false;
1745 xfer->timed_xfer = true;
1746 mfindex = xhci_mfindex_get(xhci);
1747 xhci_calc_intr_kick(xhci, xfer, epctx, mfindex);
1748 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1749 if (xfer->running_retry) {
1750 return -1;
1751 }
1752 break;
1753 case ET_BULK_OUT:
1754 case ET_BULK_IN:
1755 xfer->pkts = 0;
1756 xfer->iso_xfer = false;
1757 xfer->timed_xfer = false;
1758 break;
1759 case ET_ISO_OUT:
1760 case ET_ISO_IN:
1761 xfer->pkts = 1;
1762 xfer->iso_xfer = true;
1763 xfer->timed_xfer = true;
1764 mfindex = xhci_mfindex_get(xhci);
1765 xhci_calc_iso_kick(xhci, xfer, epctx, mfindex);
1766 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1767 if (xfer->running_retry) {
1768 return -1;
1769 }
1770 break;
1771 default:
1772 trace_usb_xhci_unimplemented("endpoint type", epctx->type);
1773 return -1;
1774 }
1775
1776 if (xhci_setup_packet(xfer) < 0) {
1777 return -1;
1778 }
1779 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1780 xhci_try_complete_packet(xfer);
1781 return 0;
1782 }
1783
1784 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1785 {
1786 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1787 xfer->epctx->epid, xfer->streamid);
1788 return xhci_submit(xhci, xfer, epctx);
1789 }
1790
1791 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
1792 unsigned int epid, unsigned int streamid)
1793 {
1794 XHCIEPContext *epctx;
1795
1796 assert(slotid >= 1 && slotid <= xhci->numslots);
1797 assert(epid >= 1 && epid <= 31);
1798
1799 if (!xhci->slots[slotid-1].enabled) {
1800 DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid);
1801 return;
1802 }
1803 epctx = xhci->slots[slotid-1].eps[epid-1];
1804 if (!epctx) {
1805 DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n",
1806 epid, slotid);
1807 return;
1808 }
1809
1810 if (epctx->kick_active) {
1811 return;
1812 }
1813 xhci_kick_epctx(epctx, streamid);
1814 }
1815
1816 static bool xhci_slot_ok(XHCIState *xhci, int slotid)
1817 {
1818 return (xhci->slots[slotid - 1].uport &&
1819 xhci->slots[slotid - 1].uport->dev &&
1820 xhci->slots[slotid - 1].uport->dev->attached);
1821 }
1822
1823 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid)
1824 {
1825 XHCIState *xhci = epctx->xhci;
1826 XHCIStreamContext *stctx = NULL;
1827 XHCITransfer *xfer;
1828 XHCIRing *ring;
1829 USBEndpoint *ep = NULL;
1830 uint64_t mfindex;
1831 unsigned int count = 0;
1832 int length;
1833 int i;
1834
1835 trace_usb_xhci_ep_kick(epctx->slotid, epctx->epid, streamid);
1836 assert(!epctx->kick_active);
1837
1838 /* If the device has been detached, but the guest has not noticed this
1839 yet the 2 above checks will succeed, but we must NOT continue */
1840 if (!xhci_slot_ok(xhci, epctx->slotid)) {
1841 return;
1842 }
1843
1844 if (epctx->retry) {
1845 XHCITransfer *xfer = epctx->retry;
1846
1847 trace_usb_xhci_xfer_retry(xfer);
1848 assert(xfer->running_retry);
1849 if (xfer->timed_xfer) {
1850 /* time to kick the transfer? */
1851 mfindex = xhci_mfindex_get(xhci);
1852 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1853 if (xfer->running_retry) {
1854 return;
1855 }
1856 xfer->timed_xfer = 0;
1857 xfer->running_retry = 1;
1858 }
1859 if (xfer->iso_xfer) {
1860 /* retry iso transfer */
1861 if (xhci_setup_packet(xfer) < 0) {
1862 return;
1863 }
1864 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1865 assert(xfer->packet.status != USB_RET_NAK);
1866 xhci_try_complete_packet(xfer);
1867 } else {
1868 /* retry nak'ed transfer */
1869 if (xhci_setup_packet(xfer) < 0) {
1870 return;
1871 }
1872 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1873 if (xfer->packet.status == USB_RET_NAK) {
1874 xhci_xfer_unmap(xfer);
1875 return;
1876 }
1877 xhci_try_complete_packet(xfer);
1878 }
1879 assert(!xfer->running_retry);
1880 if (xfer->complete) {
1881 /* update ring dequeue ptr */
1882 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
1883 xhci_ep_free_xfer(epctx->retry);
1884 }
1885 epctx->retry = NULL;
1886 }
1887
1888 if (epctx->state == EP_HALTED) {
1889 DPRINTF("xhci: ep halted, not running schedule\n");
1890 return;
1891 }
1892
1893
1894 if (epctx->nr_pstreams) {
1895 uint32_t err;
1896 stctx = xhci_find_stream(epctx, streamid, &err);
1897 if (stctx == NULL) {
1898 return;
1899 }
1900 ring = &stctx->ring;
1901 xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING);
1902 } else {
1903 ring = &epctx->ring;
1904 streamid = 0;
1905 xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING);
1906 }
1907 assert(ring->dequeue != 0);
1908
1909 epctx->kick_active++;
1910 while (1) {
1911 length = xhci_ring_chain_length(xhci, ring);
1912 if (length <= 0) {
1913 if (epctx->type == ET_ISO_OUT || epctx->type == ET_ISO_IN) {
1914 /* 4.10.3.1 */
1915 XHCIEvent ev = { ER_TRANSFER };
1916 ev.ccode = epctx->type == ET_ISO_IN ?
1917 CC_RING_OVERRUN : CC_RING_UNDERRUN;
1918 ev.slotid = epctx->slotid;
1919 ev.epid = epctx->epid;
1920 ev.ptr = epctx->ring.dequeue;
1921 xhci_event(xhci, &ev, xhci->slots[epctx->slotid-1].intr);
1922 }
1923 break;
1924 }
1925 xfer = xhci_ep_alloc_xfer(epctx, length);
1926 if (xfer == NULL) {
1927 break;
1928 }
1929
1930 for (i = 0; i < length; i++) {
1931 TRBType type;
1932 type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL);
1933 if (!type) {
1934 xhci_die(xhci);
1935 xhci_ep_free_xfer(xfer);
1936 epctx->kick_active--;
1937 return;
1938 }
1939 }
1940 xfer->streamid = streamid;
1941
1942 if (epctx->epid == 1) {
1943 xhci_fire_ctl_transfer(xhci, xfer);
1944 } else {
1945 xhci_fire_transfer(xhci, xfer, epctx);
1946 }
1947 if (!xhci_slot_ok(xhci, epctx->slotid)) {
1948 /* surprise removal -> stop processing */
1949 break;
1950 }
1951 if (xfer->complete) {
1952 /* update ring dequeue ptr */
1953 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
1954 xhci_ep_free_xfer(xfer);
1955 xfer = NULL;
1956 }
1957
1958 if (epctx->state == EP_HALTED) {
1959 break;
1960 }
1961 if (xfer != NULL && xfer->running_retry) {
1962 DPRINTF("xhci: xfer nacked, stopping schedule\n");
1963 epctx->retry = xfer;
1964 xhci_xfer_unmap(xfer);
1965 break;
1966 }
1967 if (count++ > TRANSFER_LIMIT) {
1968 trace_usb_xhci_enforced_limit("transfers");
1969 break;
1970 }
1971 }
1972 epctx->kick_active--;
1973
1974 ep = xhci_epid_to_usbep(epctx);
1975 if (ep) {
1976 usb_device_flush_ep_queue(ep->dev, ep);
1977 }
1978 }
1979
1980 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid)
1981 {
1982 trace_usb_xhci_slot_enable(slotid);
1983 assert(slotid >= 1 && slotid <= xhci->numslots);
1984 xhci->slots[slotid-1].enabled = 1;
1985 xhci->slots[slotid-1].uport = NULL;
1986 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31);
1987
1988 return CC_SUCCESS;
1989 }
1990
1991 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid)
1992 {
1993 int i;
1994
1995 trace_usb_xhci_slot_disable(slotid);
1996 assert(slotid >= 1 && slotid <= xhci->numslots);
1997
1998 for (i = 1; i <= 31; i++) {
1999 if (xhci->slots[slotid-1].eps[i-1]) {
2000 xhci_disable_ep(xhci, slotid, i);
2001 }
2002 }
2003
2004 xhci->slots[slotid-1].enabled = 0;
2005 xhci->slots[slotid-1].addressed = 0;
2006 xhci->slots[slotid-1].uport = NULL;
2007 xhci->slots[slotid-1].intr = 0;
2008 return CC_SUCCESS;
2009 }
2010
2011 static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx)
2012 {
2013 USBPort *uport;
2014 char path[32];
2015 int i, pos, port;
2016
2017 port = (slot_ctx[1]>>16) & 0xFF;
2018 if (port < 1 || port > xhci->numports) {
2019 return NULL;
2020 }
2021 port = xhci->ports[port-1].uport->index+1;
2022 pos = snprintf(path, sizeof(path), "%d", port);
2023 for (i = 0; i < 5; i++) {
2024 port = (slot_ctx[0] >> 4*i) & 0x0f;
2025 if (!port) {
2026 break;
2027 }
2028 pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port);
2029 }
2030
2031 QTAILQ_FOREACH(uport, &xhci->bus.used, next) {
2032 if (strcmp(uport->path, path) == 0) {
2033 return uport;
2034 }
2035 }
2036 return NULL;
2037 }
2038
2039 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
2040 uint64_t pictx, bool bsr)
2041 {
2042 XHCISlot *slot;
2043 USBPort *uport;
2044 USBDevice *dev;
2045 dma_addr_t ictx, octx, dcbaap;
2046 uint64_t poctx;
2047 uint32_t ictl_ctx[2];
2048 uint32_t slot_ctx[4];
2049 uint32_t ep0_ctx[5];
2050 int i;
2051 TRBCCode res;
2052
2053 assert(slotid >= 1 && slotid <= xhci->numslots);
2054
2055 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
2056 poctx = ldq_le_dma(xhci->as, dcbaap + 8 * slotid);
2057 ictx = xhci_mask64(pictx);
2058 octx = xhci_mask64(poctx);
2059
2060 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2061 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2062
2063 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2064
2065 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) {
2066 DPRINTF("xhci: invalid input context control %08x %08x\n",
2067 ictl_ctx[0], ictl_ctx[1]);
2068 return CC_TRB_ERROR;
2069 }
2070
2071 xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx));
2072 xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx));
2073
2074 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2075 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2076
2077 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2078 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2079
2080 uport = xhci_lookup_uport(xhci, slot_ctx);
2081 if (uport == NULL) {
2082 DPRINTF("xhci: port not found\n");
2083 return CC_TRB_ERROR;
2084 }
2085 trace_usb_xhci_slot_address(slotid, uport->path);
2086
2087 dev = uport->dev;
2088 if (!dev || !dev->attached) {
2089 DPRINTF("xhci: port %s not connected\n", uport->path);
2090 return CC_USB_TRANSACTION_ERROR;
2091 }
2092
2093 for (i = 0; i < xhci->numslots; i++) {
2094 if (i == slotid-1) {
2095 continue;
2096 }
2097 if (xhci->slots[i].uport == uport) {
2098 DPRINTF("xhci: port %s already assigned to slot %d\n",
2099 uport->path, i+1);
2100 return CC_TRB_ERROR;
2101 }
2102 }
2103
2104 slot = &xhci->slots[slotid-1];
2105 slot->uport = uport;
2106 slot->ctx = octx;
2107 slot->intr = get_field(slot_ctx[2], TRB_INTR);
2108
2109 /* Make sure device is in USB_STATE_DEFAULT state */
2110 usb_device_reset(dev);
2111 if (bsr) {
2112 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT;
2113 } else {
2114 USBPacket p;
2115 uint8_t buf[1];
2116
2117 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid;
2118 memset(&p, 0, sizeof(p));
2119 usb_packet_addbuf(&p, buf, sizeof(buf));
2120 usb_packet_setup(&p, USB_TOKEN_OUT,
2121 usb_ep_get(dev, USB_TOKEN_OUT, 0), 0,
2122 0, false, false);
2123 usb_device_handle_control(dev, &p,
2124 DeviceOutRequest | USB_REQ_SET_ADDRESS,
2125 slotid, 0, 0, NULL);
2126 assert(p.status != USB_RET_ASYNC);
2127 usb_packet_cleanup(&p);
2128 }
2129
2130 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx);
2131
2132 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2133 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2134 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2135 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2136
2137 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2138 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2139
2140 xhci->slots[slotid-1].addressed = 1;
2141 return res;
2142 }
2143
2144
2145 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid,
2146 uint64_t pictx, bool dc)
2147 {
2148 dma_addr_t ictx, octx;
2149 uint32_t ictl_ctx[2];
2150 uint32_t slot_ctx[4];
2151 uint32_t islot_ctx[4];
2152 uint32_t ep_ctx[5];
2153 int i;
2154 TRBCCode res;
2155
2156 trace_usb_xhci_slot_configure(slotid);
2157 assert(slotid >= 1 && slotid <= xhci->numslots);
2158
2159 ictx = xhci_mask64(pictx);
2160 octx = xhci->slots[slotid-1].ctx;
2161
2162 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2163 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2164
2165 if (dc) {
2166 for (i = 2; i <= 31; i++) {
2167 if (xhci->slots[slotid-1].eps[i-1]) {
2168 xhci_disable_ep(xhci, slotid, i);
2169 }
2170 }
2171
2172 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2173 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2174 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT;
2175 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2176 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2177 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2178
2179 return CC_SUCCESS;
2180 }
2181
2182 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2183
2184 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) {
2185 DPRINTF("xhci: invalid input context control %08x %08x\n",
2186 ictl_ctx[0], ictl_ctx[1]);
2187 return CC_TRB_ERROR;
2188 }
2189
2190 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2191 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2192
2193 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) {
2194 DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]);
2195 return CC_CONTEXT_STATE_ERROR;
2196 }
2197
2198 xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]);
2199
2200 for (i = 2; i <= 31; i++) {
2201 if (ictl_ctx[0] & (1<<i)) {
2202 xhci_disable_ep(xhci, slotid, i);
2203 }
2204 if (ictl_ctx[1] & (1<<i)) {
2205 xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx));
2206 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n",
2207 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2208 ep_ctx[3], ep_ctx[4]);
2209 xhci_disable_ep(xhci, slotid, i);
2210 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx);
2211 if (res != CC_SUCCESS) {
2212 return res;
2213 }
2214 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n",
2215 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2216 ep_ctx[3], ep_ctx[4]);
2217 xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx));
2218 }
2219 }
2220
2221 res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]);
2222 if (res != CC_SUCCESS) {
2223 for (i = 2; i <= 31; i++) {
2224 if (ictl_ctx[1] & (1u << i)) {
2225 xhci_disable_ep(xhci, slotid, i);
2226 }
2227 }
2228 return res;
2229 }
2230
2231 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2232 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT;
2233 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT);
2234 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK <<
2235 SLOT_CONTEXT_ENTRIES_SHIFT);
2236 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2237 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2238
2239 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2240
2241 return CC_SUCCESS;
2242 }
2243
2244
2245 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid,
2246 uint64_t pictx)
2247 {
2248 dma_addr_t ictx, octx;
2249 uint32_t ictl_ctx[2];
2250 uint32_t iep0_ctx[5];
2251 uint32_t ep0_ctx[5];
2252 uint32_t islot_ctx[4];
2253 uint32_t slot_ctx[4];
2254
2255 trace_usb_xhci_slot_evaluate(slotid);
2256 assert(slotid >= 1 && slotid <= xhci->numslots);
2257
2258 ictx = xhci_mask64(pictx);
2259 octx = xhci->slots[slotid-1].ctx;
2260
2261 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2262 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2263
2264 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2265
2266 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) {
2267 DPRINTF("xhci: invalid input context control %08x %08x\n",
2268 ictl_ctx[0], ictl_ctx[1]);
2269 return CC_TRB_ERROR;
2270 }
2271
2272 if (ictl_ctx[1] & 0x1) {
2273 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2274
2275 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2276 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]);
2277
2278 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2279
2280 slot_ctx[1] &= ~0xFFFF; /* max exit latency */
2281 slot_ctx[1] |= islot_ctx[1] & 0xFFFF;
2282 /* update interrupter target field */
2283 xhci->slots[slotid-1].intr = get_field(islot_ctx[2], TRB_INTR);
2284 set_field(&slot_ctx[2], xhci->slots[slotid-1].intr, TRB_INTR);
2285
2286 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2287 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2288
2289 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2290 }
2291
2292 if (ictl_ctx[1] & 0x2) {
2293 xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx));
2294
2295 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2296 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2],
2297 iep0_ctx[3], iep0_ctx[4]);
2298
2299 xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2300
2301 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/
2302 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000;
2303
2304 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2305 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2306
2307 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2308 }
2309
2310 return CC_SUCCESS;
2311 }
2312
2313 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid)
2314 {
2315 uint32_t slot_ctx[4];
2316 dma_addr_t octx;
2317 int i;
2318
2319 trace_usb_xhci_slot_reset(slotid);
2320 assert(slotid >= 1 && slotid <= xhci->numslots);
2321
2322 octx = xhci->slots[slotid-1].ctx;
2323
2324 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2325
2326 for (i = 2; i <= 31; i++) {
2327 if (xhci->slots[slotid-1].eps[i-1]) {
2328 xhci_disable_ep(xhci, slotid, i);
2329 }
2330 }
2331
2332 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2333 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2334 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT;
2335 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2336 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2337 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2338
2339 return CC_SUCCESS;
2340 }
2341
2342 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb)
2343 {
2344 unsigned int slotid;
2345 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK;
2346 if (slotid < 1 || slotid > xhci->numslots) {
2347 DPRINTF("xhci: bad slot id %d\n", slotid);
2348 event->ccode = CC_TRB_ERROR;
2349 return 0;
2350 } else if (!xhci->slots[slotid-1].enabled) {
2351 DPRINTF("xhci: slot id %d not enabled\n", slotid);
2352 event->ccode = CC_SLOT_NOT_ENABLED_ERROR;
2353 return 0;
2354 }
2355 return slotid;
2356 }
2357
2358 /* cleanup slot state on usb device detach */
2359 static void xhci_detach_slot(XHCIState *xhci, USBPort *uport)
2360 {
2361 int slot, ep;
2362
2363 for (slot = 0; slot < xhci->numslots; slot++) {
2364 if (xhci->slots[slot].uport == uport) {
2365 break;
2366 }
2367 }
2368 if (slot == xhci->numslots) {
2369 return;
2370 }
2371
2372 for (ep = 0; ep < 31; ep++) {
2373 if (xhci->slots[slot].eps[ep]) {
2374 xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0);
2375 }
2376 }
2377 xhci->slots[slot].uport = NULL;
2378 }
2379
2380 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx)
2381 {
2382 dma_addr_t ctx;
2383 uint8_t bw_ctx[xhci->numports+1];
2384
2385 DPRINTF("xhci_get_port_bandwidth()\n");
2386
2387 ctx = xhci_mask64(pctx);
2388
2389 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx);
2390
2391 /* TODO: actually implement real values here */
2392 bw_ctx[0] = 0;
2393 memset(&bw_ctx[1], 80, xhci->numports); /* 80% */
2394 dma_memory_write(xhci->as, ctx, bw_ctx, sizeof(bw_ctx));
2395
2396 return CC_SUCCESS;
2397 }
2398
2399 static uint32_t rotl(uint32_t v, unsigned count)
2400 {
2401 count &= 31;
2402 return (v << count) | (v >> (32 - count));
2403 }
2404
2405
2406 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo)
2407 {
2408 uint32_t val;
2409 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F));
2410 val += rotl(lo + 0x49434878, hi & 0x1F);
2411 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F);
2412 return ~val;
2413 }
2414
2415 static void xhci_process_commands(XHCIState *xhci)
2416 {
2417 XHCITRB trb;
2418 TRBType type;
2419 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS};
2420 dma_addr_t addr;
2421 unsigned int i, slotid = 0, count = 0;
2422
2423 DPRINTF("xhci_process_commands()\n");
2424 if (!xhci_running(xhci)) {
2425 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n");
2426 return;
2427 }
2428
2429 xhci->crcr_low |= CRCR_CRR;
2430
2431 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) {
2432 event.ptr = addr;
2433 switch (type) {
2434 case CR_ENABLE_SLOT:
2435 for (i = 0; i < xhci->numslots; i++) {
2436 if (!xhci->slots[i].enabled) {
2437 break;
2438 }
2439 }
2440 if (i >= xhci->numslots) {
2441 DPRINTF("xhci: no device slots available\n");
2442 event.ccode = CC_NO_SLOTS_ERROR;
2443 } else {
2444 slotid = i+1;
2445 event.ccode = xhci_enable_slot(xhci, slotid);
2446 }
2447 break;
2448 case CR_DISABLE_SLOT:
2449 slotid = xhci_get_slot(xhci, &event, &trb);
2450 if (slotid) {
2451 event.ccode = xhci_disable_slot(xhci, slotid);
2452 }
2453 break;
2454 case CR_ADDRESS_DEVICE:
2455 slotid = xhci_get_slot(xhci, &event, &trb);
2456 if (slotid) {
2457 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter,
2458 trb.control & TRB_CR_BSR);
2459 }
2460 break;
2461 case CR_CONFIGURE_ENDPOINT:
2462 slotid = xhci_get_slot(xhci, &event, &trb);
2463 if (slotid) {
2464 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter,
2465 trb.control & TRB_CR_DC);
2466 }
2467 break;
2468 case CR_EVALUATE_CONTEXT:
2469 slotid = xhci_get_slot(xhci, &event, &trb);
2470 if (slotid) {
2471 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter);
2472 }
2473 break;
2474 case CR_STOP_ENDPOINT:
2475 slotid = xhci_get_slot(xhci, &event, &trb);
2476 if (slotid) {
2477 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2478 & TRB_CR_EPID_MASK;
2479 event.ccode = xhci_stop_ep(xhci, slotid, epid);
2480 }
2481 break;
2482 case CR_RESET_ENDPOINT:
2483 slotid = xhci_get_slot(xhci, &event, &trb);
2484 if (slotid) {
2485 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2486 & TRB_CR_EPID_MASK;
2487 event.ccode = xhci_reset_ep(xhci, slotid, epid);
2488 }
2489 break;
2490 case CR_SET_TR_DEQUEUE:
2491 slotid = xhci_get_slot(xhci, &event, &trb);
2492 if (slotid) {
2493 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2494 & TRB_CR_EPID_MASK;
2495 unsigned int streamid = (trb.status >> 16) & 0xffff;
2496 event.ccode = xhci_set_ep_dequeue(xhci, slotid,
2497 epid, streamid,
2498 trb.parameter);
2499 }
2500 break;
2501 case CR_RESET_DEVICE:
2502 slotid = xhci_get_slot(xhci, &event, &trb);
2503 if (slotid) {
2504 event.ccode = xhci_reset_slot(xhci, slotid);
2505 }
2506 break;
2507 case CR_GET_PORT_BANDWIDTH:
2508 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter);
2509 break;
2510 case CR_NOOP:
2511 event.ccode = CC_SUCCESS;
2512 break;
2513 case CR_VENDOR_NEC_FIRMWARE_REVISION:
2514 if (xhci->nec_quirks) {
2515 event.type = 48; /* NEC reply */
2516 event.length = 0x3025;
2517 } else {
2518 event.ccode = CC_TRB_ERROR;
2519 }
2520 break;
2521 case CR_VENDOR_NEC_CHALLENGE_RESPONSE:
2522 if (xhci->nec_quirks) {
2523 uint32_t chi = trb.parameter >> 32;
2524 uint32_t clo = trb.parameter;
2525 uint32_t val = xhci_nec_challenge(chi, clo);
2526 event.length = val & 0xFFFF;
2527 event.epid = val >> 16;
2528 slotid = val >> 24;
2529 event.type = 48; /* NEC reply */
2530 } else {
2531 event.ccode = CC_TRB_ERROR;
2532 }
2533 break;
2534 default:
2535 trace_usb_xhci_unimplemented("command", type);
2536 event.ccode = CC_TRB_ERROR;
2537 break;
2538 }
2539 event.slotid = slotid;
2540 xhci_event(xhci, &event, 0);
2541
2542 if (count++ > COMMAND_LIMIT) {
2543 trace_usb_xhci_enforced_limit("commands");
2544 return;
2545 }
2546 }
2547 }
2548
2549 static bool xhci_port_have_device(XHCIPort *port)
2550 {
2551 if (!port->uport->dev || !port->uport->dev->attached) {
2552 return false; /* no device present */
2553 }
2554 if (!((1 << port->uport->dev->speed) & port->speedmask)) {
2555 return false; /* speed mismatch */
2556 }
2557 return true;
2558 }
2559
2560 static void xhci_port_notify(XHCIPort *port, uint32_t bits)
2561 {
2562 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
2563 port->portnr << 24 };
2564
2565 if ((port->portsc & bits) == bits) {
2566 return;
2567 }
2568 trace_usb_xhci_port_notify(port->portnr, bits);
2569 port->portsc |= bits;
2570 if (!xhci_running(port->xhci)) {
2571 return;
2572 }
2573 xhci_event(port->xhci, &ev, 0);
2574 }
2575
2576 static void xhci_port_update(XHCIPort *port, int is_detach)
2577 {
2578 uint32_t pls = PLS_RX_DETECT;
2579
2580 assert(port);
2581 port->portsc = PORTSC_PP;
2582 if (!is_detach && xhci_port_have_device(port)) {
2583 port->portsc |= PORTSC_CCS;
2584 switch (port->uport->dev->speed) {
2585 case USB_SPEED_LOW:
2586 port->portsc |= PORTSC_SPEED_LOW;
2587 pls = PLS_POLLING;
2588 break;
2589 case USB_SPEED_FULL:
2590 port->portsc |= PORTSC_SPEED_FULL;
2591 pls = PLS_POLLING;
2592 break;
2593 case USB_SPEED_HIGH:
2594 port->portsc |= PORTSC_SPEED_HIGH;
2595 pls = PLS_POLLING;
2596 break;
2597 case USB_SPEED_SUPER:
2598 port->portsc |= PORTSC_SPEED_SUPER;
2599 port->portsc |= PORTSC_PED;
2600 pls = PLS_U0;
2601 break;
2602 }
2603 }
2604 set_field(&port->portsc, pls, PORTSC_PLS);
2605 trace_usb_xhci_port_link(port->portnr, pls);
2606 xhci_port_notify(port, PORTSC_CSC);
2607 }
2608
2609 static void xhci_port_reset(XHCIPort *port, bool warm_reset)
2610 {
2611 trace_usb_xhci_port_reset(port->portnr, warm_reset);
2612
2613 if (!xhci_port_have_device(port)) {
2614 return;
2615 }
2616
2617 usb_device_reset(port->uport->dev);
2618
2619 switch (port->uport->dev->speed) {
2620 case USB_SPEED_SUPER:
2621 if (warm_reset) {
2622 port->portsc |= PORTSC_WRC;
2623 }
2624 /* fall through */
2625 case USB_SPEED_LOW:
2626 case USB_SPEED_FULL:
2627 case USB_SPEED_HIGH:
2628 set_field(&port->portsc, PLS_U0, PORTSC_PLS);
2629 trace_usb_xhci_port_link(port->portnr, PLS_U0);
2630 port->portsc |= PORTSC_PED;
2631 break;
2632 }
2633
2634 port->portsc &= ~PORTSC_PR;
2635 xhci_port_notify(port, PORTSC_PRC);
2636 }
2637
2638 static void xhci_reset(DeviceState *dev)
2639 {
2640 XHCIState *xhci = XHCI(dev);
2641 int i;
2642
2643 trace_usb_xhci_reset();
2644 if (!(xhci->usbsts & USBSTS_HCH)) {
2645 DPRINTF("xhci: reset while running!\n");
2646 }
2647
2648 xhci->usbcmd = 0;
2649 xhci->usbsts = USBSTS_HCH;
2650 xhci->dnctrl = 0;
2651 xhci->crcr_low = 0;
2652 xhci->crcr_high = 0;
2653 xhci->dcbaap_low = 0;
2654 xhci->dcbaap_high = 0;
2655 xhci->config = 0;
2656
2657 for (i = 0; i < xhci->numslots; i++) {
2658 xhci_disable_slot(xhci, i+1);
2659 }
2660
2661 for (i = 0; i < xhci->numports; i++) {
2662 xhci_port_update(xhci->ports + i, 0);
2663 }
2664
2665 for (i = 0; i < xhci->numintrs; i++) {
2666 xhci->intr[i].iman = 0;
2667 xhci->intr[i].imod = 0;
2668 xhci->intr[i].erstsz = 0;
2669 xhci->intr[i].erstba_low = 0;
2670 xhci->intr[i].erstba_high = 0;
2671 xhci->intr[i].erdp_low = 0;
2672 xhci->intr[i].erdp_high = 0;
2673
2674 xhci->intr[i].er_ep_idx = 0;
2675 xhci->intr[i].er_pcs = 1;
2676 xhci->intr[i].ev_buffer_put = 0;
2677 xhci->intr[i].ev_buffer_get = 0;
2678 }
2679
2680 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2681 xhci_mfwrap_update(xhci);
2682 }
2683
2684 static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size)
2685 {
2686 XHCIState *xhci = ptr;
2687 uint32_t ret;
2688
2689 switch (reg) {
2690 case 0x00: /* HCIVERSION, CAPLENGTH */
2691 ret = 0x01000000 | LEN_CAP;
2692 break;
2693 case 0x04: /* HCSPARAMS 1 */
2694 ret = ((xhci->numports_2+xhci->numports_3)<<24)
2695 | (xhci->numintrs<<8) | xhci->numslots;
2696 break;
2697 case 0x08: /* HCSPARAMS 2 */
2698 ret = 0x0000000f;
2699 break;
2700 case 0x0c: /* HCSPARAMS 3 */
2701 ret = 0x00000000;
2702 break;
2703 case 0x10: /* HCCPARAMS */
2704 if (sizeof(dma_addr_t) == 4) {
2705 ret = 0x00080000 | (xhci->max_pstreams_mask << 12);
2706 } else {
2707 ret = 0x00080001 | (xhci->max_pstreams_mask << 12);
2708 }
2709 break;
2710 case 0x14: /* DBOFF */
2711 ret = OFF_DOORBELL;
2712 break;
2713 case 0x18: /* RTSOFF */
2714 ret = OFF_RUNTIME;
2715 break;
2716
2717 /* extended capabilities */
2718 case 0x20: /* Supported Protocol:00 */
2719 ret = 0x02000402; /* USB 2.0 */
2720 break;
2721 case 0x24: /* Supported Protocol:04 */
2722 ret = 0x20425355; /* "USB " */
2723 break;
2724 case 0x28: /* Supported Protocol:08 */
2725 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2726 ret = (xhci->numports_2<<8) | (xhci->numports_3+1);
2727 } else {
2728 ret = (xhci->numports_2<<8) | 1;
2729 }
2730 break;
2731 case 0x2c: /* Supported Protocol:0c */
2732 ret = 0x00000000; /* reserved */
2733 break;
2734 case 0x30: /* Supported Protocol:00 */
2735 ret = 0x03000002; /* USB 3.0 */
2736 break;
2737 case 0x34: /* Supported Protocol:04 */
2738 ret = 0x20425355; /* "USB " */
2739 break;
2740 case 0x38: /* Supported Protocol:08 */
2741 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2742 ret = (xhci->numports_3<<8) | 1;
2743 } else {
2744 ret = (xhci->numports_3<<8) | (xhci->numports_2+1);
2745 }
2746 break;
2747 case 0x3c: /* Supported Protocol:0c */
2748 ret = 0x00000000; /* reserved */
2749 break;
2750 default:
2751 trace_usb_xhci_unimplemented("cap read", reg);
2752 ret = 0;
2753 }
2754
2755 trace_usb_xhci_cap_read(reg, ret);
2756 return ret;
2757 }
2758
2759 static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size)
2760 {
2761 XHCIPort *port = ptr;
2762 uint32_t ret;
2763
2764 switch (reg) {
2765 case 0x00: /* PORTSC */
2766 ret = port->portsc;
2767 break;
2768 case 0x04: /* PORTPMSC */
2769 case 0x08: /* PORTLI */
2770 ret = 0;
2771 break;
2772 case 0x0c: /* reserved */
2773 default:
2774 trace_usb_xhci_unimplemented("port read", reg);
2775 ret = 0;
2776 }
2777
2778 trace_usb_xhci_port_read(port->portnr, reg, ret);
2779 return ret;
2780 }
2781
2782 static void xhci_port_write(void *ptr, hwaddr reg,
2783 uint64_t val, unsigned size)
2784 {
2785 XHCIPort *port = ptr;
2786 uint32_t portsc, notify;
2787
2788 trace_usb_xhci_port_write(port->portnr, reg, val);
2789
2790 switch (reg) {
2791 case 0x00: /* PORTSC */
2792 /* write-1-to-start bits */
2793 if (val & PORTSC_WPR) {
2794 xhci_port_reset(port, true);
2795 break;
2796 }
2797 if (val & PORTSC_PR) {
2798 xhci_port_reset(port, false);
2799 break;
2800 }
2801
2802 portsc = port->portsc;
2803 notify = 0;
2804 /* write-1-to-clear bits*/
2805 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC|
2806 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
2807 if (val & PORTSC_LWS) {
2808 /* overwrite PLS only when LWS=1 */
2809 uint32_t old_pls = get_field(port->portsc, PORTSC_PLS);
2810 uint32_t new_pls = get_field(val, PORTSC_PLS);
2811 switch (new_pls) {
2812 case PLS_U0:
2813 if (old_pls != PLS_U0) {
2814 set_field(&portsc, new_pls, PORTSC_PLS);
2815 trace_usb_xhci_port_link(port->portnr, new_pls);
2816 notify = PORTSC_PLC;
2817 }
2818 break;
2819 case PLS_U3:
2820 if (old_pls < PLS_U3) {
2821 set_field(&portsc, new_pls, PORTSC_PLS);
2822 trace_usb_xhci_port_link(port->portnr, new_pls);
2823 }
2824 break;
2825 case PLS_RESUME:
2826 /* windows does this for some reason, don't spam stderr */
2827 break;
2828 default:
2829 DPRINTF("%s: ignore pls write (old %d, new %d)\n",
2830 __func__, old_pls, new_pls);
2831 break;
2832 }
2833 }
2834 /* read/write bits */
2835 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
2836 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE));
2837 port->portsc = portsc;
2838 if (notify) {
2839 xhci_port_notify(port, notify);
2840 }
2841 break;
2842 case 0x04: /* PORTPMSC */
2843 case 0x08: /* PORTLI */
2844 default:
2845 trace_usb_xhci_unimplemented("port write", reg);
2846 }
2847 }
2848
2849 static uint64_t xhci_oper_read(void *ptr, hwaddr reg, unsigned size)
2850 {
2851 XHCIState *xhci = ptr;
2852 uint32_t ret;
2853
2854 switch (reg) {
2855 case 0x00: /* USBCMD */
2856 ret = xhci->usbcmd;
2857 break;
2858 case 0x04: /* USBSTS */
2859 ret = xhci->usbsts;
2860 break;
2861 case 0x08: /* PAGESIZE */
2862 ret = 1; /* 4KiB */
2863 break;
2864 case 0x14: /* DNCTRL */
2865 ret = xhci->dnctrl;
2866 break;
2867 case 0x18: /* CRCR low */
2868 ret = xhci->crcr_low & ~0xe;
2869 break;
2870 case 0x1c: /* CRCR high */
2871 ret = xhci->crcr_high;
2872 break;
2873 case 0x30: /* DCBAAP low */
2874 ret = xhci->dcbaap_low;
2875 break;
2876 case 0x34: /* DCBAAP high */
2877 ret = xhci->dcbaap_high;
2878 break;
2879 case 0x38: /* CONFIG */
2880 ret = xhci->config;
2881 break;
2882 default:
2883 trace_usb_xhci_unimplemented("oper read", reg);
2884 ret = 0;
2885 }
2886
2887 trace_usb_xhci_oper_read(reg, ret);
2888 return ret;
2889 }
2890
2891 static void xhci_oper_write(void *ptr, hwaddr reg,
2892 uint64_t val, unsigned size)
2893 {
2894 XHCIState *xhci = XHCI(ptr);
2895
2896 trace_usb_xhci_oper_write(reg, val);
2897
2898 switch (reg) {
2899 case 0x00: /* USBCMD */
2900 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) {
2901 xhci_run(xhci);
2902 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) {
2903 xhci_stop(xhci);
2904 }
2905 if (val & USBCMD_CSS) {
2906 /* save state */
2907 xhci->usbsts &= ~USBSTS_SRE;
2908 }
2909 if (val & USBCMD_CRS) {
2910 /* restore state */
2911 xhci->usbsts |= USBSTS_SRE;
2912 }
2913 xhci->usbcmd = val & 0xc0f;
2914 xhci_mfwrap_update(xhci);
2915 if (val & USBCMD_HCRST) {
2916 xhci_reset(DEVICE(xhci));
2917 }
2918 xhci_intr_update(xhci, 0);
2919 break;
2920
2921 case 0x04: /* USBSTS */
2922 /* these bits are write-1-to-clear */
2923 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE));
2924 xhci_intr_update(xhci, 0);
2925 break;
2926
2927 case 0x14: /* DNCTRL */
2928 xhci->dnctrl = val & 0xffff;
2929 break;
2930 case 0x18: /* CRCR low */
2931 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR);
2932 break;
2933 case 0x1c: /* CRCR high */
2934 xhci->crcr_high = val;
2935 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) {
2936 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED};
2937 xhci->crcr_low &= ~CRCR_CRR;
2938 xhci_event(xhci, &event, 0);
2939 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low);
2940 } else {
2941 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val);
2942 xhci_ring_init(xhci, &xhci->cmd_ring, base);
2943 }
2944 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS);
2945 break;
2946 case 0x30: /* DCBAAP low */
2947 xhci->dcbaap_low = val & 0xffffffc0;
2948 break;
2949 case 0x34: /* DCBAAP high */
2950 xhci->dcbaap_high = val;
2951 break;
2952 case 0x38: /* CONFIG */
2953 xhci->config = val & 0xff;
2954 break;
2955 default:
2956 trace_usb_xhci_unimplemented("oper write", reg);
2957 }
2958 }
2959
2960 static uint64_t xhci_runtime_read(void *ptr, hwaddr reg,
2961 unsigned size)
2962 {
2963 XHCIState *xhci = ptr;
2964 uint32_t ret = 0;
2965
2966 if (reg < 0x20) {
2967 switch (reg) {
2968 case 0x00: /* MFINDEX */
2969 ret = xhci_mfindex_get(xhci) & 0x3fff;
2970 break;
2971 default:
2972 trace_usb_xhci_unimplemented("runtime read", reg);
2973 break;
2974 }
2975 } else {
2976 int v = (reg - 0x20) / 0x20;
2977 XHCIInterrupter *intr = &xhci->intr[v];
2978 switch (reg & 0x1f) {
2979 case 0x00: /* IMAN */
2980 ret = intr->iman;
2981 break;
2982 case 0x04: /* IMOD */
2983 ret = intr->imod;
2984 break;
2985 case 0x08: /* ERSTSZ */
2986 ret = intr->erstsz;
2987 break;
2988 case 0x10: /* ERSTBA low */
2989 ret = intr->erstba_low;
2990 break;
2991 case 0x14: /* ERSTBA high */
2992 ret = intr->erstba_high;
2993 break;
2994 case 0x18: /* ERDP low */
2995 ret = intr->erdp_low;
2996 break;
2997 case 0x1c: /* ERDP high */
2998 ret = intr->erdp_high;
2999 break;
3000 }
3001 }
3002
3003 trace_usb_xhci_runtime_read(reg, ret);
3004 return ret;
3005 }
3006
3007 static void xhci_runtime_write(void *ptr, hwaddr reg,
3008 uint64_t val, unsigned size)
3009 {
3010 XHCIState *xhci = ptr;
3011 int v = (reg - 0x20) / 0x20;
3012 XHCIInterrupter *intr = &xhci->intr[v];
3013 trace_usb_xhci_runtime_write(reg, val);
3014
3015 if (reg < 0x20) {
3016 trace_usb_xhci_unimplemented("runtime write", reg);
3017 return;
3018 }
3019
3020 switch (reg & 0x1f) {
3021 case 0x00: /* IMAN */
3022 if (val & IMAN_IP) {
3023 intr->iman &= ~IMAN_IP;
3024 }
3025 intr->iman &= ~IMAN_IE;
3026 intr->iman |= val & IMAN_IE;
3027 xhci_intr_update(xhci, v);
3028 break;
3029 case 0x04: /* IMOD */
3030 intr->imod = val;
3031 break;
3032 case 0x08: /* ERSTSZ */
3033 intr->erstsz = val & 0xffff;
3034 break;
3035 case 0x10: /* ERSTBA low */
3036 if (xhci->nec_quirks) {
3037 /* NEC driver bug: it doesn't align this to 64 bytes */
3038 intr->erstba_low = val & 0xfffffff0;
3039 } else {
3040 intr->erstba_low = val & 0xffffffc0;
3041 }
3042 break;
3043 case 0x14: /* ERSTBA high */
3044 intr->erstba_high = val;
3045 xhci_er_reset(xhci, v);
3046 break;
3047 case 0x18: /* ERDP low */
3048 if (val & ERDP_EHB) {
3049 intr->erdp_low &= ~ERDP_EHB;
3050 }
3051 intr->erdp_low = (val & ~ERDP_EHB) | (intr->erdp_low & ERDP_EHB);
3052 if (val & ERDP_EHB) {
3053 dma_addr_t erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
3054 unsigned int dp_idx = (erdp - intr->er_start) / TRB_SIZE;
3055 if (erdp >= intr->er_start &&
3056 erdp < (intr->er_start + TRB_SIZE * intr->er_size) &&
3057 dp_idx != intr->er_ep_idx) {
3058 xhci_intr_raise(xhci, v);
3059 }
3060 }
3061 break;
3062 case 0x1c: /* ERDP high */
3063 intr->erdp_high = val;
3064 break;
3065 default:
3066 trace_usb_xhci_unimplemented("oper write", reg);
3067 }
3068 }
3069
3070 static uint64_t xhci_doorbell_read(void *ptr, hwaddr reg,
3071 unsigned size)
3072 {
3073 /* doorbells always read as 0 */
3074 trace_usb_xhci_doorbell_read(reg, 0);
3075 return 0;
3076 }
3077
3078 static void xhci_doorbell_write(void *ptr, hwaddr reg,
3079 uint64_t val, unsigned size)
3080 {
3081 XHCIState *xhci = ptr;
3082 unsigned int epid, streamid;
3083
3084 trace_usb_xhci_doorbell_write(reg, val);
3085
3086 if (!xhci_running(xhci)) {
3087 DPRINTF("xhci: wrote doorbell while xHC stopped or paused\n");
3088 return;
3089 }
3090
3091 reg >>= 2;
3092
3093 if (reg == 0) {
3094 if (val == 0) {
3095 xhci_process_commands(xhci);
3096 } else {
3097 DPRINTF("xhci: bad doorbell 0 write: 0x%x\n",
3098 (uint32_t)val);
3099 }
3100 } else {
3101 epid = val & 0xff;
3102 streamid = (val >> 16) & 0xffff;
3103 if (reg > xhci->numslots) {
3104 DPRINTF("xhci: bad doorbell %d\n", (int)reg);
3105 } else if (epid == 0 || epid > 31) {
3106 DPRINTF("xhci: bad doorbell %d write: 0x%x\n",
3107 (int)reg, (uint32_t)val);
3108 } else {
3109 xhci_kick_ep(xhci, reg, epid, streamid);
3110 }
3111 }
3112 }
3113
3114 static void xhci_cap_write(void *opaque, hwaddr addr, uint64_t val,
3115 unsigned width)
3116 {
3117 /* nothing */
3118 }
3119
3120 static const MemoryRegionOps xhci_cap_ops = {
3121 .read = xhci_cap_read,
3122 .write = xhci_cap_write,
3123 .valid.min_access_size = 1,
3124 .valid.max_access_size = 4,
3125 .impl.min_access_size = 4,
3126 .impl.max_access_size = 4,
3127 .endianness = DEVICE_LITTLE_ENDIAN,
3128 };
3129
3130 static const MemoryRegionOps xhci_oper_ops = {
3131 .read = xhci_oper_read,
3132 .write = xhci_oper_write,
3133 .valid.min_access_size = 4,
3134 .valid.max_access_size = sizeof(dma_addr_t),
3135 .endianness = DEVICE_LITTLE_ENDIAN,
3136 };
3137
3138 static const MemoryRegionOps xhci_port_ops = {
3139 .read = xhci_port_read,
3140 .write = xhci_port_write,
3141 .valid.min_access_size = 4,
3142 .valid.max_access_size = 4,
3143 .endianness = DEVICE_LITTLE_ENDIAN,
3144 };
3145
3146 static const MemoryRegionOps xhci_runtime_ops = {
3147 .read = xhci_runtime_read,
3148 .write = xhci_runtime_write,
3149 .valid.min_access_size = 4,
3150 .valid.max_access_size = sizeof(dma_addr_t),
3151 .endianness = DEVICE_LITTLE_ENDIAN,
3152 };
3153
3154 static const MemoryRegionOps xhci_doorbell_ops = {
3155 .read = xhci_doorbell_read,
3156 .write = xhci_doorbell_write,
3157 .valid.min_access_size = 4,
3158 .valid.max_access_size = 4,
3159 .endianness = DEVICE_LITTLE_ENDIAN,
3160 };
3161
3162 static void xhci_attach(USBPort *usbport)
3163 {
3164 XHCIState *xhci = usbport->opaque;
3165 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3166
3167 xhci_port_update(port, 0);
3168 }
3169
3170 static void xhci_detach(USBPort *usbport)
3171 {
3172 XHCIState *xhci = usbport->opaque;
3173 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3174
3175 xhci_detach_slot(xhci, usbport);
3176 xhci_port_update(port, 1);
3177 }
3178
3179 static void xhci_wakeup(USBPort *usbport)
3180 {
3181 XHCIState *xhci = usbport->opaque;
3182 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3183
3184 assert(port);
3185 if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
3186 return;
3187 }
3188 set_field(&port->portsc, PLS_RESUME, PORTSC_PLS);
3189 xhci_port_notify(port, PORTSC_PLC);
3190 }
3191
3192 static void xhci_complete(USBPort *port, USBPacket *packet)
3193 {
3194 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
3195
3196 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
3197 xhci_ep_nuke_one_xfer(xfer, 0);
3198 return;
3199 }
3200 xhci_try_complete_packet(xfer);
3201 xhci_kick_epctx(xfer->epctx, xfer->streamid);
3202 if (xfer->complete) {
3203 xhci_ep_free_xfer(xfer);
3204 }
3205 }
3206
3207 static void xhci_child_detach(USBPort *uport, USBDevice *child)
3208 {
3209 USBBus *bus = usb_bus_from_device(child);
3210 XHCIState *xhci = container_of(bus, XHCIState, bus);
3211
3212 xhci_detach_slot(xhci, child->port);
3213 }
3214
3215 static USBPortOps xhci_uport_ops = {
3216 .attach = xhci_attach,
3217 .detach = xhci_detach,
3218 .wakeup = xhci_wakeup,
3219 .complete = xhci_complete,
3220 .child_detach = xhci_child_detach,
3221 };
3222
3223 static int xhci_find_epid(USBEndpoint *ep)
3224 {
3225 if (ep->nr == 0) {
3226 return 1;
3227 }
3228 if (ep->pid == USB_TOKEN_IN) {
3229 return ep->nr * 2 + 1;
3230 } else {
3231 return ep->nr * 2;
3232 }
3233 }
3234
3235 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx)
3236 {
3237 USBPort *uport;
3238 uint32_t token;
3239
3240 if (!epctx) {
3241 return NULL;
3242 }
3243 uport = epctx->xhci->slots[epctx->slotid - 1].uport;
3244 if (!uport || !uport->dev) {
3245 return NULL;
3246 }
3247 token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT;
3248 return usb_ep_get(uport->dev, token, epctx->epid >> 1);
3249 }
3250
3251 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
3252 unsigned int stream)
3253 {
3254 XHCIState *xhci = container_of(bus, XHCIState, bus);
3255 int slotid;
3256
3257 DPRINTF("%s\n", __func__);
3258 slotid = ep->dev->addr;
3259 if (slotid == 0 || !xhci->slots[slotid-1].enabled) {
3260 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr);
3261 return;
3262 }