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usb: fix usb-host dependency check
[qemu/kevin.git] / hw / usb / hcd-xhci.c
blobe01700039b13d1404d3dc66eb3d3f99233e1277f
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/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 if (xhci->intr_raise(xhci, 0, level)) {
555 xhci->intr[0].iman &= ~IMAN_IP;
556 }
557 }
558 }
559 if (xhci->intr_update) {
560 xhci->intr_update(xhci, v,
561 xhci->intr[v].iman & IMAN_IE);
562 }
563 }
564
565 static void xhci_intr_raise(XHCIState *xhci, int v)
566 {
567 bool pending = (xhci->intr[v].erdp_low & ERDP_EHB);
568
569 xhci->intr[v].erdp_low |= ERDP_EHB;
570 xhci->intr[v].iman |= IMAN_IP;
571 xhci->usbsts |= USBSTS_EINT;
572
573 if (pending) {
574 return;
575 }
576 if (!(xhci->intr[v].iman & IMAN_IE)) {
577 return;
578 }
579
580 if (!(xhci->usbcmd & USBCMD_INTE)) {
581 return;
582 }
583 if (xhci->intr_raise) {
584 if (xhci->intr_raise(xhci, v, true)) {
585 xhci->intr[v].iman &= ~IMAN_IP;
586 }
587 }
588 }
589
590 static inline int xhci_running(XHCIState *xhci)
591 {
592 return !(xhci->usbsts & USBSTS_HCH);
593 }
594
595 static void xhci_die(XHCIState *xhci)
596 {
597 xhci->usbsts |= USBSTS_HCE;
598 DPRINTF("xhci: asserted controller error\n");
599 }
600
601 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v)
602 {
603 XHCIInterrupter *intr = &xhci->intr[v];
604 XHCITRB ev_trb;
605 dma_addr_t addr;
606
607 ev_trb.parameter = cpu_to_le64(event->ptr);
608 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
609 ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
610 event->flags | (event->type << TRB_TYPE_SHIFT);
611 if (intr->er_pcs) {
612 ev_trb.control |= TRB_C;
613 }
614 ev_trb.control = cpu_to_le32(ev_trb.control);
615
616 trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb),
617 event_name(event), ev_trb.parameter,
618 ev_trb.status, ev_trb.control);
619
620 addr = intr->er_start + TRB_SIZE*intr->er_ep_idx;
621 dma_memory_write(xhci->as, addr, &ev_trb, TRB_SIZE);
622
623 intr->er_ep_idx++;
624 if (intr->er_ep_idx >= intr->er_size) {
625 intr->er_ep_idx = 0;
626 intr->er_pcs = !intr->er_pcs;
627 }
628 }
629
630 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v)
631 {
632 XHCIInterrupter *intr;
633 dma_addr_t erdp;
634 unsigned int dp_idx;
635
636 if (v >= xhci->numintrs) {
637 DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs);
638 return;
639 }
640 intr = &xhci->intr[v];
641
642 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
643 if (erdp < intr->er_start ||
644 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) {
645 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
646 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n",
647 v, intr->er_start, intr->er_size);
648 xhci_die(xhci);
649 return;
650 }
651
652 dp_idx = (erdp - intr->er_start) / TRB_SIZE;
653 assert(dp_idx < intr->er_size);
654
655 if ((intr->er_ep_idx + 2) % intr->er_size == dp_idx) {
656 DPRINTF("xhci: ER %d full, send ring full error\n", v);
657 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
658 xhci_write_event(xhci, &full, v);
659 } else if ((intr->er_ep_idx + 1) % intr->er_size == dp_idx) {
660 DPRINTF("xhci: ER %d full, drop event\n", v);
661 } else {
662 xhci_write_event(xhci, event, v);
663 }
664
665 xhci_intr_raise(xhci, v);
666 }
667
668 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring,
669 dma_addr_t base)
670 {
671 ring->dequeue = base;
672 ring->ccs = 1;
673 }
674
675 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
676 dma_addr_t *addr)
677 {
678 uint32_t link_cnt = 0;
679
680 while (1) {
681 TRBType type;
682 dma_memory_read(xhci->as, ring->dequeue, trb, TRB_SIZE);
683 trb->addr = ring->dequeue;
684 trb->ccs = ring->ccs;
685 le64_to_cpus(&trb->parameter);
686 le32_to_cpus(&trb->status);
687 le32_to_cpus(&trb->control);
688
689 trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb),
690 trb->parameter, trb->status, trb->control);
691
692 if ((trb->control & TRB_C) != ring->ccs) {
693 return 0;
694 }
695
696 type = TRB_TYPE(*trb);
697
698 if (type != TR_LINK) {
699 if (addr) {
700 *addr = ring->dequeue;
701 }
702 ring->dequeue += TRB_SIZE;
703 return type;
704 } else {
705 if (++link_cnt > TRB_LINK_LIMIT) {
706 trace_usb_xhci_enforced_limit("trb-link");
707 return 0;
708 }
709 ring->dequeue = xhci_mask64(trb->parameter);
710 if (trb->control & TRB_LK_TC) {
711 ring->ccs = !ring->ccs;
712 }
713 }
714 }
715 }
716
717 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
718 {
719 XHCITRB trb;
720 int length = 0;
721 dma_addr_t dequeue = ring->dequeue;
722 bool ccs = ring->ccs;
723 /* hack to bundle together the two/three TDs that make a setup transfer */
724 bool control_td_set = 0;
725 uint32_t link_cnt = 0;
726
727 while (1) {
728 TRBType type;
729 dma_memory_read(xhci->as, dequeue, &trb, TRB_SIZE);
730 le64_to_cpus(&trb.parameter);
731 le32_to_cpus(&trb.status);
732 le32_to_cpus(&trb.control);
733
734 if ((trb.control & TRB_C) != ccs) {
735 return -length;
736 }
737
738 type = TRB_TYPE(trb);
739
740 if (type == TR_LINK) {
741 if (++link_cnt > TRB_LINK_LIMIT) {
742 return -length;
743 }
744 dequeue = xhci_mask64(trb.parameter);
745 if (trb.control & TRB_LK_TC) {
746 ccs = !ccs;
747 }
748 continue;
749 }
750
751 length += 1;
752 dequeue += TRB_SIZE;
753
754 if (type == TR_SETUP) {
755 control_td_set = 1;
756 } else if (type == TR_STATUS) {
757 control_td_set = 0;
758 }
759
760 if (!control_td_set && !(trb.control & TRB_TR_CH)) {
761 return length;
762 }
763 }
764 }
765
766 static void xhci_er_reset(XHCIState *xhci, int v)
767 {
768 XHCIInterrupter *intr = &xhci->intr[v];
769 XHCIEvRingSeg seg;
770 dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high);
771
772 if (intr->erstsz == 0 || erstba == 0) {
773 /* disabled */
774 intr->er_start = 0;
775 intr->er_size = 0;
776 return;
777 }
778 /* cache the (sole) event ring segment location */
779 if (intr->erstsz != 1) {
780 DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz);
781 xhci_die(xhci);
782 return;
783 }
784 dma_memory_read(xhci->as, erstba, &seg, sizeof(seg));
785 le32_to_cpus(&seg.addr_low);
786 le32_to_cpus(&seg.addr_high);
787 le32_to_cpus(&seg.size);
788 if (seg.size < 16 || seg.size > 4096) {
789 DPRINTF("xhci: invalid value for segment size: %d\n", seg.size);
790 xhci_die(xhci);
791 return;
792 }
793 intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high);
794 intr->er_size = seg.size;
795
796 intr->er_ep_idx = 0;
797 intr->er_pcs = 1;
798
799 DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n",
800 v, intr->er_start, intr->er_size);
801 }
802
803 static void xhci_run(XHCIState *xhci)
804 {
805 trace_usb_xhci_run();
806 xhci->usbsts &= ~USBSTS_HCH;
807 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
808 }
809
810 static void xhci_stop(XHCIState *xhci)
811 {
812 trace_usb_xhci_stop();
813 xhci->usbsts |= USBSTS_HCH;
814 xhci->crcr_low &= ~CRCR_CRR;
815 }
816
817 static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count,
818 dma_addr_t base)
819 {
820 XHCIStreamContext *stctx;
821 unsigned int i;
822
823 stctx = g_new0(XHCIStreamContext, count);
824 for (i = 0; i < count; i++) {
825 stctx[i].pctx = base + i * 16;
826 stctx[i].sct = -1;
827 }
828 return stctx;
829 }
830
831 static void xhci_reset_streams(XHCIEPContext *epctx)
832 {
833 unsigned int i;
834
835 for (i = 0; i < epctx->nr_pstreams; i++) {
836 epctx->pstreams[i].sct = -1;
837 }
838 }
839
840 static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base)
841 {
842 assert(epctx->pstreams == NULL);
843 epctx->nr_pstreams = 2 << epctx->max_pstreams;
844 epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base);
845 }
846
847 static void xhci_free_streams(XHCIEPContext *epctx)
848 {
849 assert(epctx->pstreams != NULL);
850
851 g_free(epctx->pstreams);
852 epctx->pstreams = NULL;
853 epctx->nr_pstreams = 0;
854 }
855
856 static int xhci_epmask_to_eps_with_streams(XHCIState *xhci,
857 unsigned int slotid,
858 uint32_t epmask,
859 XHCIEPContext **epctxs,
860 USBEndpoint **eps)
861 {
862 XHCISlot *slot;
863 XHCIEPContext *epctx;
864 USBEndpoint *ep;
865 int i, j;
866
867 assert(slotid >= 1 && slotid <= xhci->numslots);
868
869 slot = &xhci->slots[slotid - 1];
870
871 for (i = 2, j = 0; i <= 31; i++) {
872 if (!(epmask & (1u << i))) {
873 continue;
874 }
875
876 epctx = slot->eps[i - 1];
877 ep = xhci_epid_to_usbep(epctx);
878 if (!epctx || !epctx->nr_pstreams || !ep) {
879 continue;
880 }
881
882 if (epctxs) {
883 epctxs[j] = epctx;
884 }
885 eps[j++] = ep;
886 }
887 return j;
888 }
889
890 static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid,
891 uint32_t epmask)
892 {
893 USBEndpoint *eps[30];
894 int nr_eps;
895
896 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps);
897 if (nr_eps) {
898 usb_device_free_streams(eps[0]->dev, eps, nr_eps);
899 }
900 }
901
902 static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid,
903 uint32_t epmask)
904 {
905 XHCIEPContext *epctxs[30];
906 USBEndpoint *eps[30];
907 int i, r, nr_eps, req_nr_streams, dev_max_streams;
908
909 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs,
910 eps);
911 if (nr_eps == 0) {
912 return CC_SUCCESS;
913 }
914
915 req_nr_streams = epctxs[0]->nr_pstreams;
916 dev_max_streams = eps[0]->max_streams;
917
918 for (i = 1; i < nr_eps; i++) {
919 /*
920 * HdG: I don't expect these to ever trigger, but if they do we need
921 * to come up with another solution, ie group identical endpoints
922 * together and make an usb_device_alloc_streams call per group.
923 */
924 if (epctxs[i]->nr_pstreams != req_nr_streams) {
925 FIXME("guest streams config not identical for all eps");
926 return CC_RESOURCE_ERROR;
927 }
928 if (eps[i]->max_streams != dev_max_streams) {
929 FIXME("device streams config not identical for all eps");
930 return CC_RESOURCE_ERROR;
931 }
932 }
933
934 /*
935 * max-streams in both the device descriptor and in the controller is a
936 * power of 2. But stream id 0 is reserved, so if a device can do up to 4
937 * streams the guest will ask for 5 rounded up to the next power of 2 which
938 * becomes 8. For emulated devices usb_device_alloc_streams is a nop.
939 *
940 * For redirected devices however this is an issue, as there we must ask
941 * the real xhci controller to alloc streams, and the host driver for the
942 * real xhci controller will likely disallow allocating more streams then
943 * the device can handle.
944 *
945 * So we limit the requested nr_streams to the maximum number the device
946 * can handle.
947 */
948 if (req_nr_streams > dev_max_streams) {
949 req_nr_streams = dev_max_streams;
950 }
951
952 r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams);
953 if (r != 0) {
954 DPRINTF("xhci: alloc streams failed\n");
955 return CC_RESOURCE_ERROR;
956 }
957
958 return CC_SUCCESS;
959 }
960
961 static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx,
962 unsigned int streamid,
963 uint32_t *cc_error)
964 {
965 XHCIStreamContext *sctx;
966 dma_addr_t base;
967 uint32_t ctx[2], sct;
968
969 assert(streamid != 0);
970 if (epctx->lsa) {
971 if (streamid >= epctx->nr_pstreams) {
972 *cc_error = CC_INVALID_STREAM_ID_ERROR;
973 return NULL;
974 }
975 sctx = epctx->pstreams + streamid;
976 } else {
977 FIXME("secondary streams not implemented yet");
978 }
979
980 if (sctx->sct == -1) {
981 xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx));
982 sct = (ctx[0] >> 1) & 0x07;
983 if (epctx->lsa && sct != 1) {
984 *cc_error = CC_INVALID_STREAM_TYPE_ERROR;
985 return NULL;
986 }
987 sctx->sct = sct;
988 base = xhci_addr64(ctx[0] & ~0xf, ctx[1]);
989 xhci_ring_init(epctx->xhci, &sctx->ring, base);
990 }
991 return sctx;
992 }
993
994 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
995 XHCIStreamContext *sctx, uint32_t state)
996 {
997 XHCIRing *ring = NULL;
998 uint32_t ctx[5];
999 uint32_t ctx2[2];
1000
1001 xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1002 ctx[0] &= ~EP_STATE_MASK;
1003 ctx[0] |= state;
1004
1005 /* update ring dequeue ptr */
1006 if (epctx->nr_pstreams) {
1007 if (sctx != NULL) {
1008 ring = &sctx->ring;
1009 xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1010 ctx2[0] &= 0xe;
1011 ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs;
1012 ctx2[1] = (sctx->ring.dequeue >> 16) >> 16;
1013 xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1014 }
1015 } else {
1016 ring = &epctx->ring;
1017 }
1018 if (ring) {
1019 ctx[2] = ring->dequeue | ring->ccs;
1020 ctx[3] = (ring->dequeue >> 16) >> 16;
1021
1022 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n",
1023 epctx->pctx, state, ctx[3], ctx[2]);
1024 }
1025
1026 xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1027 if (epctx->state != state) {
1028 trace_usb_xhci_ep_state(epctx->slotid, epctx->epid,
1029 ep_state_name(epctx->state),
1030 ep_state_name(state));
1031 }
1032 epctx->state = state;
1033 }
1034
1035 static void xhci_ep_kick_timer(void *opaque)
1036 {
1037 XHCIEPContext *epctx = opaque;
1038 xhci_kick_epctx(epctx, 0);
1039 }
1040
1041 static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci,
1042 unsigned int slotid,
1043 unsigned int epid)
1044 {
1045 XHCIEPContext *epctx;
1046
1047 epctx = g_new0(XHCIEPContext, 1);
1048 epctx->xhci = xhci;
1049 epctx->slotid = slotid;
1050 epctx->epid = epid;
1051
1052 QTAILQ_INIT(&epctx->transfers);
1053 epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx);
1054
1055 return epctx;
1056 }
1057
1058 static void xhci_init_epctx(XHCIEPContext *epctx,
1059 dma_addr_t pctx, uint32_t *ctx)
1060 {
1061 dma_addr_t dequeue;
1062
1063 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
1064
1065 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK;
1066 epctx->pctx = pctx;
1067 epctx->max_psize = ctx[1]>>16;
1068 epctx->max_psize *= 1+((ctx[1]>>8)&0xff);
1069 epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask;
1070 epctx->lsa = (ctx[0] >> 15) & 1;
1071 if (epctx->max_pstreams) {
1072 xhci_alloc_streams(epctx, dequeue);
1073 } else {
1074 xhci_ring_init(epctx->xhci, &epctx->ring, dequeue);
1075 epctx->ring.ccs = ctx[2] & 1;
1076 }
1077
1078 epctx->interval = 1 << ((ctx[0] >> 16) & 0xff);
1079 }
1080
1081 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
1082 unsigned int epid, dma_addr_t pctx,
1083 uint32_t *ctx)
1084 {
1085 XHCISlot *slot;
1086 XHCIEPContext *epctx;
1087
1088 trace_usb_xhci_ep_enable(slotid, epid);
1089 assert(slotid >= 1 && slotid <= xhci->numslots);
1090 assert(epid >= 1 && epid <= 31);
1091
1092 slot = &xhci->slots[slotid-1];
1093 if (slot->eps[epid-1]) {
1094 xhci_disable_ep(xhci, slotid, epid);
1095 }
1096
1097 epctx = xhci_alloc_epctx(xhci, slotid, epid);
1098 slot->eps[epid-1] = epctx;
1099 xhci_init_epctx(epctx, pctx, ctx);
1100
1101 DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) "
1102 "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize);
1103
1104 epctx->mfindex_last = 0;
1105
1106 epctx->state = EP_RUNNING;
1107 ctx[0] &= ~EP_STATE_MASK;
1108 ctx[0] |= EP_RUNNING;
1109
1110 return CC_SUCCESS;
1111 }
1112
1113 static XHCITransfer *xhci_ep_alloc_xfer(XHCIEPContext *epctx,
1114 uint32_t length)
1115 {
1116 uint32_t limit = epctx->nr_pstreams + 16;
1117 XHCITransfer *xfer;
1118
1119 if (epctx->xfer_count >= limit) {
1120 return NULL;
1121 }
1122
1123 xfer = g_new0(XHCITransfer, 1);
1124 xfer->epctx = epctx;
1125 xfer->trbs = g_new(XHCITRB, length);
1126 xfer->trb_count = length;
1127 usb_packet_init(&xfer->packet);
1128
1129 QTAILQ_INSERT_TAIL(&epctx->transfers, xfer, next);
1130 epctx->xfer_count++;
1131
1132 return xfer;
1133 }
1134
1135 static void xhci_ep_free_xfer(XHCITransfer *xfer)
1136 {
1137 QTAILQ_REMOVE(&xfer->epctx->transfers, xfer, next);
1138 xfer->epctx->xfer_count--;
1139
1140 usb_packet_cleanup(&xfer->packet);
1141 g_free(xfer->trbs);
1142 g_free(xfer);
1143 }
1144
1145 static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report)
1146 {
1147 int killed = 0;
1148
1149 if (report && (t->running_async || t->running_retry)) {
1150 t->status = report;
1151 xhci_xfer_report(t);
1152 }
1153
1154 if (t->running_async) {
1155 usb_cancel_packet(&t->packet);
1156 t->running_async = 0;
1157 killed = 1;
1158 }
1159 if (t->running_retry) {
1160 if (t->epctx) {
1161 t->epctx->retry = NULL;
1162 timer_del(t->epctx->kick_timer);
1163 }
1164 t->running_retry = 0;
1165 killed = 1;
1166 }
1167 g_free(t->trbs);
1168
1169 t->trbs = NULL;
1170 t->trb_count = 0;
1171
1172 return killed;
1173 }
1174
1175 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
1176 unsigned int epid, TRBCCode report)
1177 {
1178 XHCISlot *slot;
1179 XHCIEPContext *epctx;
1180 XHCITransfer *xfer;
1181 int killed = 0;
1182 USBEndpoint *ep = NULL;
1183 assert(slotid >= 1 && slotid <= xhci->numslots);
1184 assert(epid >= 1 && epid <= 31);
1185
1186 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid);
1187
1188 slot = &xhci->slots[slotid-1];
1189
1190 if (!slot->eps[epid-1]) {
1191 return 0;
1192 }
1193
1194 epctx = slot->eps[epid-1];
1195
1196 for (;;) {
1197 xfer = QTAILQ_FIRST(&epctx->transfers);
1198 if (xfer == NULL) {
1199 break;
1200 }
1201 killed += xhci_ep_nuke_one_xfer(xfer, report);
1202 if (killed) {
1203 report = 0; /* Only report once */
1204 }
1205 xhci_ep_free_xfer(xfer);
1206 }
1207
1208 ep = xhci_epid_to_usbep(epctx);
1209 if (ep) {
1210 usb_device_ep_stopped(ep->dev, ep);
1211 }
1212 return killed;
1213 }
1214
1215 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
1216 unsigned int epid)
1217 {
1218 XHCISlot *slot;
1219 XHCIEPContext *epctx;
1220
1221 trace_usb_xhci_ep_disable(slotid, epid);
1222 assert(slotid >= 1 && slotid <= xhci->numslots);
1223 assert(epid >= 1 && epid <= 31);
1224
1225 slot = &xhci->slots[slotid-1];
1226
1227 if (!slot->eps[epid-1]) {
1228 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid);
1229 return CC_SUCCESS;
1230 }
1231
1232 xhci_ep_nuke_xfers(xhci, slotid, epid, 0);
1233
1234 epctx = slot->eps[epid-1];
1235
1236 if (epctx->nr_pstreams) {
1237 xhci_free_streams(epctx);
1238 }
1239
1240 /* only touch guest RAM if we're not resetting the HC */
1241 if (xhci->dcbaap_low || xhci->dcbaap_high) {
1242 xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED);
1243 }
1244
1245 timer_free(epctx->kick_timer);
1246 g_free(epctx);
1247 slot->eps[epid-1] = NULL;
1248
1249 return CC_SUCCESS;
1250 }
1251
1252 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
1253 unsigned int epid)
1254 {
1255 XHCISlot *slot;
1256 XHCIEPContext *epctx;
1257
1258 trace_usb_xhci_ep_stop(slotid, epid);
1259 assert(slotid >= 1 && slotid <= xhci->numslots);
1260
1261 if (epid < 1 || epid > 31) {
1262 DPRINTF("xhci: bad ep %d\n", epid);
1263 return CC_TRB_ERROR;
1264 }
1265
1266 slot = &xhci->slots[slotid-1];
1267
1268 if (!slot->eps[epid-1]) {
1269 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1270 return CC_EP_NOT_ENABLED_ERROR;
1271 }
1272
1273 if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) {
1274 DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, "
1275 "data might be lost\n");
1276 }
1277
1278 epctx = slot->eps[epid-1];
1279
1280 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1281
1282 if (epctx->nr_pstreams) {
1283 xhci_reset_streams(epctx);
1284 }
1285
1286 return CC_SUCCESS;
1287 }
1288
1289 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
1290 unsigned int epid)
1291 {
1292 XHCISlot *slot;
1293 XHCIEPContext *epctx;
1294
1295 trace_usb_xhci_ep_reset(slotid, epid);
1296 assert(slotid >= 1 && slotid <= xhci->numslots);
1297
1298 if (epid < 1 || epid > 31) {
1299 DPRINTF("xhci: bad ep %d\n", epid);
1300 return CC_TRB_ERROR;
1301 }
1302
1303 slot = &xhci->slots[slotid-1];
1304
1305 if (!slot->eps[epid-1]) {
1306 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1307 return CC_EP_NOT_ENABLED_ERROR;
1308 }
1309
1310 epctx = slot->eps[epid-1];
1311
1312 if (epctx->state != EP_HALTED) {
1313 DPRINTF("xhci: reset EP while EP %d not halted (%d)\n",
1314 epid, epctx->state);
1315 return CC_CONTEXT_STATE_ERROR;
1316 }
1317
1318 if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) {
1319 DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, "
1320 "data might be lost\n");
1321 }
1322
1323 if (!xhci->slots[slotid-1].uport ||
1324 !xhci->slots[slotid-1].uport->dev ||
1325 !xhci->slots[slotid-1].uport->dev->attached) {
1326 return CC_USB_TRANSACTION_ERROR;
1327 }
1328
1329 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1330
1331 if (epctx->nr_pstreams) {
1332 xhci_reset_streams(epctx);
1333 }
1334
1335 return CC_SUCCESS;
1336 }
1337
1338 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid,
1339 unsigned int epid, unsigned int streamid,
1340 uint64_t pdequeue)
1341 {
1342 XHCISlot *slot;
1343 XHCIEPContext *epctx;
1344 XHCIStreamContext *sctx;
1345 dma_addr_t dequeue;
1346
1347 assert(slotid >= 1 && slotid <= xhci->numslots);
1348
1349 if (epid < 1 || epid > 31) {
1350 DPRINTF("xhci: bad ep %d\n", epid);
1351 return CC_TRB_ERROR;
1352 }
1353
1354 trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue);
1355 dequeue = xhci_mask64(pdequeue);
1356
1357 slot = &xhci->slots[slotid-1];
1358
1359 if (!slot->eps[epid-1]) {
1360 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1361 return CC_EP_NOT_ENABLED_ERROR;
1362 }
1363
1364 epctx = slot->eps[epid-1];
1365
1366 if (epctx->state != EP_STOPPED) {
1367 DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid);
1368 return CC_CONTEXT_STATE_ERROR;
1369 }
1370
1371 if (epctx->nr_pstreams) {
1372 uint32_t err;
1373 sctx = xhci_find_stream(epctx, streamid, &err);
1374 if (sctx == NULL) {
1375 return err;
1376 }
1377 xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf);
1378 sctx->ring.ccs = dequeue & 1;
1379 } else {
1380 sctx = NULL;
1381 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF);
1382 epctx->ring.ccs = dequeue & 1;
1383 }
1384
1385 xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED);
1386
1387 return CC_SUCCESS;
1388 }
1389
1390 static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer)
1391 {
1392 XHCIState *xhci = xfer->epctx->xhci;
1393 int i;
1394
1395 xfer->int_req = false;
1396 qemu_sglist_init(&xfer->sgl, DEVICE(xhci), xfer->trb_count, xhci->as);
1397 for (i = 0; i < xfer->trb_count; i++) {
1398 XHCITRB *trb = &xfer->trbs[i];
1399 dma_addr_t addr;
1400 unsigned int chunk = 0;
1401
1402 if (trb->control & TRB_TR_IOC) {
1403 xfer->int_req = true;
1404 }
1405
1406 switch (TRB_TYPE(*trb)) {
1407 case TR_DATA:
1408 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) {
1409 DPRINTF("xhci: data direction mismatch for TR_DATA\n");
1410 goto err;
1411 }
1412 /* fallthrough */
1413 case TR_NORMAL:
1414 case TR_ISOCH:
1415 addr = xhci_mask64(trb->parameter);
1416 chunk = trb->status & 0x1ffff;
1417 if (trb->control & TRB_TR_IDT) {
1418 if (chunk > 8 || in_xfer) {
1419 DPRINTF("xhci: invalid immediate data TRB\n");
1420 goto err;
1421 }
1422 qemu_sglist_add(&xfer->sgl, trb->addr, chunk);
1423 } else {
1424 qemu_sglist_add(&xfer->sgl, addr, chunk);
1425 }
1426 break;
1427 }
1428 }
1429
1430 return 0;
1431
1432 err:
1433 qemu_sglist_destroy(&xfer->sgl);
1434 xhci_die(xhci);
1435 return -1;
1436 }
1437
1438 static void xhci_xfer_unmap(XHCITransfer *xfer)
1439 {
1440 usb_packet_unmap(&xfer->packet, &xfer->sgl);
1441 qemu_sglist_destroy(&xfer->sgl);
1442 }
1443
1444 static void xhci_xfer_report(XHCITransfer *xfer)
1445 {
1446 uint32_t edtla = 0;
1447 unsigned int left;
1448 bool reported = 0;
1449 bool shortpkt = 0;
1450 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS};
1451 XHCIState *xhci = xfer->epctx->xhci;
1452 int i;
1453
1454 left = xfer->packet.actual_length;
1455
1456 for (i = 0; i < xfer->trb_count; i++) {
1457 XHCITRB *trb = &xfer->trbs[i];
1458 unsigned int chunk = 0;
1459
1460 switch (TRB_TYPE(*trb)) {
1461 case TR_SETUP:
1462 chunk = trb->status & 0x1ffff;
1463 if (chunk > 8) {
1464 chunk = 8;
1465 }
1466 break;
1467 case TR_DATA:
1468 case TR_NORMAL:
1469 case TR_ISOCH:
1470 chunk = trb->status & 0x1ffff;
1471 if (chunk > left) {
1472 chunk = left;
1473 if (xfer->status == CC_SUCCESS) {
1474 shortpkt = 1;
1475 }
1476 }
1477 left -= chunk;
1478 edtla += chunk;
1479 break;
1480 case TR_STATUS:
1481 reported = 0;
1482 shortpkt = 0;
1483 break;
1484 }
1485
1486 if (!reported && ((trb->control & TRB_TR_IOC) ||
1487 (shortpkt && (trb->control & TRB_TR_ISP)) ||
1488 (xfer->status != CC_SUCCESS && left == 0))) {
1489 event.slotid = xfer->epctx->slotid;
1490 event.epid = xfer->epctx->epid;
1491 event.length = (trb->status & 0x1ffff) - chunk;
1492 event.flags = 0;
1493 event.ptr = trb->addr;
1494 if (xfer->status == CC_SUCCESS) {
1495 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS;
1496 } else {
1497 event.ccode = xfer->status;
1498 }
1499 if (TRB_TYPE(*trb) == TR_EVDATA) {
1500 event.ptr = trb->parameter;
1501 event.flags |= TRB_EV_ED;
1502 event.length = edtla & 0xffffff;
1503 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length);
1504 edtla = 0;
1505 }
1506 xhci_event(xhci, &event, TRB_INTR(*trb));
1507 reported = 1;
1508 if (xfer->status != CC_SUCCESS) {
1509 return;
1510 }
1511 }
1512
1513 switch (TRB_TYPE(*trb)) {
1514 case TR_SETUP:
1515 reported = 0;
1516 shortpkt = 0;
1517 break;
1518 }
1519
1520 }
1521 }
1522
1523 static void xhci_stall_ep(XHCITransfer *xfer)
1524 {
1525 XHCIEPContext *epctx = xfer->epctx;
1526 XHCIState *xhci = epctx->xhci;
1527 uint32_t err;
1528 XHCIStreamContext *sctx;
1529
1530 if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
1531 /* never halt isoch endpoints, 4.10.2 */
1532 return;
1533 }
1534
1535 if (epctx->nr_pstreams) {
1536 sctx = xhci_find_stream(epctx, xfer->streamid, &err);
1537 if (sctx == NULL) {
1538 return;
1539 }
1540 sctx->ring.dequeue = xfer->trbs[0].addr;
1541 sctx->ring.ccs = xfer->trbs[0].ccs;
1542 xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED);
1543 } else {
1544 epctx->ring.dequeue = xfer->trbs[0].addr;
1545 epctx->ring.ccs = xfer->trbs[0].ccs;
1546 xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED);
1547 }
1548 }
1549
1550 static int xhci_setup_packet(XHCITransfer *xfer)
1551 {
1552 USBEndpoint *ep;
1553 int dir;
1554
1555 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT;
1556
1557 if (xfer->packet.ep) {
1558 ep = xfer->packet.ep;
1559 } else {
1560 ep = xhci_epid_to_usbep(xfer->epctx);
1561 if (!ep) {
1562 DPRINTF("xhci: slot %d has no device\n",
1563 xfer->epctx->slotid);
1564 return -1;
1565 }
1566 }
1567
1568 xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */
1569 usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid,
1570 xfer->trbs[0].addr, false, xfer->int_req);
1571 if (usb_packet_map(&xfer->packet, &xfer->sgl)) {
1572 qemu_sglist_destroy(&xfer->sgl);
1573 return -1;
1574 }
1575 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
1576 xfer->packet.pid, ep->dev->addr, ep->nr);
1577 return 0;
1578 }
1579
1580 static int xhci_try_complete_packet(XHCITransfer *xfer)
1581 {
1582 if (xfer->packet.status == USB_RET_ASYNC) {
1583 trace_usb_xhci_xfer_async(xfer);
1584 xfer->running_async = 1;
1585 xfer->running_retry = 0;
1586 xfer->complete = 0;
1587 return 0;
1588 } else if (xfer->packet.status == USB_RET_NAK) {
1589 trace_usb_xhci_xfer_nak(xfer);
1590 xfer->running_async = 0;
1591 xfer->running_retry = 1;
1592 xfer->complete = 0;
1593 return 0;
1594 } else {
1595 xfer->running_async = 0;
1596 xfer->running_retry = 0;
1597 xfer->complete = 1;
1598 xhci_xfer_unmap(xfer);
1599 }
1600
1601 if (xfer->packet.status == USB_RET_SUCCESS) {
1602 trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length);
1603 xfer->status = CC_SUCCESS;
1604 xhci_xfer_report(xfer);
1605 return 0;
1606 }
1607
1608 /* error */
1609 trace_usb_xhci_xfer_error(xfer, xfer->packet.status);
1610 switch (xfer->packet.status) {
1611 case USB_RET_NODEV:
1612 case USB_RET_IOERROR:
1613 xfer->status = CC_USB_TRANSACTION_ERROR;
1614 xhci_xfer_report(xfer);
1615 xhci_stall_ep(xfer);
1616 break;
1617 case USB_RET_STALL:
1618 xfer->status = CC_STALL_ERROR;
1619 xhci_xfer_report(xfer);
1620 xhci_stall_ep(xfer);
1621 break;
1622 case USB_RET_BABBLE:
1623 xfer->status = CC_BABBLE_DETECTED;
1624 xhci_xfer_report(xfer);
1625 xhci_stall_ep(xfer);
1626 break;
1627 default:
1628 DPRINTF("%s: FIXME: status = %d\n", __func__,
1629 xfer->packet.status);
1630 FIXME("unhandled USB_RET_*");
1631 }
1632 return 0;
1633 }
1634
1635 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
1636 {
1637 XHCITRB *trb_setup, *trb_status;
1638 uint8_t bmRequestType;
1639
1640 trb_setup = &xfer->trbs[0];
1641 trb_status = &xfer->trbs[xfer->trb_count-1];
1642
1643 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1644 xfer->epctx->epid, xfer->streamid);
1645
1646 /* at most one Event Data TRB allowed after STATUS */
1647 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) {
1648 trb_status--;
1649 }
1650
1651 /* do some sanity checks */
1652 if (TRB_TYPE(*trb_setup) != TR_SETUP) {
1653 DPRINTF("xhci: ep0 first TD not SETUP: %d\n",
1654 TRB_TYPE(*trb_setup));
1655 return -1;
1656 }
1657 if (TRB_TYPE(*trb_status) != TR_STATUS) {
1658 DPRINTF("xhci: ep0 last TD not STATUS: %d\n",
1659 TRB_TYPE(*trb_status));
1660 return -1;
1661 }
1662 if (!(trb_setup->control & TRB_TR_IDT)) {
1663 DPRINTF("xhci: Setup TRB doesn't have IDT set\n");
1664 return -1;
1665 }
1666 if ((trb_setup->status & 0x1ffff) != 8) {
1667 DPRINTF("xhci: Setup TRB has bad length (%d)\n",
1668 (trb_setup->status & 0x1ffff));
1669 return -1;
1670 }
1671
1672 bmRequestType = trb_setup->parameter;
1673
1674 xfer->in_xfer = bmRequestType & USB_DIR_IN;
1675 xfer->iso_xfer = false;
1676 xfer->timed_xfer = false;
1677
1678 if (xhci_setup_packet(xfer) < 0) {
1679 return -1;
1680 }
1681 xfer->packet.parameter = trb_setup->parameter;
1682
1683 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1684 xhci_try_complete_packet(xfer);
1685 return 0;
1686 }
1687
1688 static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer,
1689 XHCIEPContext *epctx, uint64_t mfindex)
1690 {
1691 uint64_t asap = ((mfindex + epctx->interval - 1) &
1692 ~(epctx->interval-1));
1693 uint64_t kick = epctx->mfindex_last + epctx->interval;
1694
1695 assert(epctx->interval != 0);
1696 xfer->mfindex_kick = MAX(asap, kick);
1697 }
1698
1699 static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1700 XHCIEPContext *epctx, uint64_t mfindex)
1701 {
1702 if (xfer->trbs[0].control & TRB_TR_SIA) {
1703 uint64_t asap = ((mfindex + epctx->interval - 1) &
1704 ~(epctx->interval-1));
1705 if (asap >= epctx->mfindex_last &&
1706 asap <= epctx->mfindex_last + epctx->interval * 4) {
1707 xfer->mfindex_kick = epctx->mfindex_last + epctx->interval;
1708 } else {
1709 xfer->mfindex_kick = asap;
1710 }
1711 } else {
1712 xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
1713 & TRB_TR_FRAMEID_MASK) << 3;
1714 xfer->mfindex_kick |= mfindex & ~0x3fff;
1715 if (xfer->mfindex_kick + 0x100 < mfindex) {
1716 xfer->mfindex_kick += 0x4000;
1717 }
1718 }
1719 }
1720
1721 static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1722 XHCIEPContext *epctx, uint64_t mfindex)
1723 {
1724 if (xfer->mfindex_kick > mfindex) {
1725 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1726 (xfer->mfindex_kick - mfindex) * 125000);
1727 xfer->running_retry = 1;
1728 } else {
1729 epctx->mfindex_last = xfer->mfindex_kick;
1730 timer_del(epctx->kick_timer);
1731 xfer->running_retry = 0;
1732 }
1733 }
1734
1735
1736 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1737 {
1738 uint64_t mfindex;
1739
1740 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", epctx->slotid, epctx->epid);
1741
1742 xfer->in_xfer = epctx->type>>2;
1743
1744 switch(epctx->type) {
1745 case ET_INTR_OUT:
1746 case ET_INTR_IN:
1747 xfer->pkts = 0;
1748 xfer->iso_xfer = false;
1749 xfer->timed_xfer = true;
1750 mfindex = xhci_mfindex_get(xhci);
1751 xhci_calc_intr_kick(xhci, xfer, epctx, mfindex);
1752 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1753 if (xfer->running_retry) {
1754 return -1;
1755 }
1756 break;
1757 case ET_BULK_OUT:
1758 case ET_BULK_IN:
1759 xfer->pkts = 0;
1760 xfer->iso_xfer = false;
1761 xfer->timed_xfer = false;
1762 break;
1763 case ET_ISO_OUT:
1764 case ET_ISO_IN:
1765 xfer->pkts = 1;
1766 xfer->iso_xfer = true;
1767 xfer->timed_xfer = true;
1768 mfindex = xhci_mfindex_get(xhci);
1769 xhci_calc_iso_kick(xhci, xfer, epctx, mfindex);
1770 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1771 if (xfer->running_retry) {
1772 return -1;
1773 }
1774 break;
1775 default:
1776 trace_usb_xhci_unimplemented("endpoint type", epctx->type);
1777 return -1;
1778 }
1779
1780 if (xhci_setup_packet(xfer) < 0) {
1781 return -1;
1782 }
1783 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1784 xhci_try_complete_packet(xfer);
1785 return 0;
1786 }
1787
1788 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1789 {
1790 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid,
1791 xfer->epctx->epid, xfer->streamid);
1792 return xhci_submit(xhci, xfer, epctx);
1793 }
1794
1795 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
1796 unsigned int epid, unsigned int streamid)
1797 {
1798 XHCIEPContext *epctx;
1799
1800 assert(slotid >= 1 && slotid <= xhci->numslots);
1801 assert(epid >= 1 && epid <= 31);
1802
1803 if (!xhci->slots[slotid-1].enabled) {
1804 DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid);
1805 return;
1806 }
1807 epctx = xhci->slots[slotid-1].eps[epid-1];
1808 if (!epctx) {
1809 DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n",
1810 epid, slotid);
1811 return;
1812 }
1813
1814 if (epctx->kick_active) {
1815 return;
1816 }
1817 xhci_kick_epctx(epctx, streamid);
1818 }
1819
1820 static bool xhci_slot_ok(XHCIState *xhci, int slotid)
1821 {
1822 return (xhci->slots[slotid - 1].uport &&
1823 xhci->slots[slotid - 1].uport->dev &&
1824 xhci->slots[slotid - 1].uport->dev->attached);
1825 }
1826
1827 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid)
1828 {
1829 XHCIState *xhci = epctx->xhci;
1830 XHCIStreamContext *stctx = NULL;
1831 XHCITransfer *xfer;
1832 XHCIRing *ring;
1833 USBEndpoint *ep = NULL;
1834 uint64_t mfindex;
1835 unsigned int count = 0;
1836 int length;
1837 int i;
1838
1839 trace_usb_xhci_ep_kick(epctx->slotid, epctx->epid, streamid);
1840 assert(!epctx->kick_active);
1841
1842 /* If the device has been detached, but the guest has not noticed this
1843 yet the 2 above checks will succeed, but we must NOT continue */
1844 if (!xhci_slot_ok(xhci, epctx->slotid)) {
1845 return;
1846 }
1847
1848 if (epctx->retry) {
1849 XHCITransfer *xfer = epctx->retry;
1850
1851 trace_usb_xhci_xfer_retry(xfer);
1852 assert(xfer->running_retry);
1853 if (xfer->timed_xfer) {
1854 /* time to kick the transfer? */
1855 mfindex = xhci_mfindex_get(xhci);
1856 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
1857 if (xfer->running_retry) {
1858 return;
1859 }
1860 xfer->timed_xfer = 0;
1861 xfer->running_retry = 1;
1862 }
1863 if (xfer->iso_xfer) {
1864 /* retry iso transfer */
1865 if (xhci_setup_packet(xfer) < 0) {
1866 return;
1867 }
1868 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1869 assert(xfer->packet.status != USB_RET_NAK);
1870 xhci_try_complete_packet(xfer);
1871 } else {
1872 /* retry nak'ed transfer */
1873 if (xhci_setup_packet(xfer) < 0) {
1874 return;
1875 }
1876 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1877 if (xfer->packet.status == USB_RET_NAK) {
1878 xhci_xfer_unmap(xfer);
1879 return;
1880 }
1881 xhci_try_complete_packet(xfer);
1882 }
1883 assert(!xfer->running_retry);
1884 if (xfer->complete) {
1885 /* update ring dequeue ptr */
1886 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
1887 xhci_ep_free_xfer(epctx->retry);
1888 }
1889 epctx->retry = NULL;
1890 }
1891
1892 if (epctx->state == EP_HALTED) {
1893 DPRINTF("xhci: ep halted, not running schedule\n");
1894 return;
1895 }
1896
1897
1898 if (epctx->nr_pstreams) {
1899 uint32_t err;
1900 stctx = xhci_find_stream(epctx, streamid, &err);
1901 if (stctx == NULL) {
1902 return;
1903 }
1904 ring = &stctx->ring;
1905 xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING);
1906 } else {
1907 ring = &epctx->ring;
1908 streamid = 0;
1909 xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING);
1910 }
1911 if (!ring->dequeue) {
1912 return;
1913 }
1914
1915 epctx->kick_active++;
1916 while (1) {
1917 length = xhci_ring_chain_length(xhci, ring);
1918 if (length <= 0) {
1919 if (epctx->type == ET_ISO_OUT || epctx->type == ET_ISO_IN) {
1920 /* 4.10.3.1 */
1921 XHCIEvent ev = { ER_TRANSFER };
1922 ev.ccode = epctx->type == ET_ISO_IN ?
1923 CC_RING_OVERRUN : CC_RING_UNDERRUN;
1924 ev.slotid = epctx->slotid;
1925 ev.epid = epctx->epid;
1926 ev.ptr = epctx->ring.dequeue;
1927 xhci_event(xhci, &ev, xhci->slots[epctx->slotid-1].intr);
1928 }
1929 break;
1930 }
1931 xfer = xhci_ep_alloc_xfer(epctx, length);
1932 if (xfer == NULL) {
1933 break;
1934 }
1935
1936 for (i = 0; i < length; i++) {
1937 TRBType type;
1938 type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL);
1939 if (!type) {
1940 xhci_die(xhci);
1941 xhci_ep_free_xfer(xfer);
1942 epctx->kick_active--;
1943 return;
1944 }
1945 }
1946 xfer->streamid = streamid;
1947
1948 if (epctx->epid == 1) {
1949 xhci_fire_ctl_transfer(xhci, xfer);
1950 } else {
1951 xhci_fire_transfer(xhci, xfer, epctx);
1952 }
1953 if (!xhci_slot_ok(xhci, epctx->slotid)) {
1954 /* surprise removal -> stop processing */
1955 break;
1956 }
1957 if (xfer->complete) {
1958 /* update ring dequeue ptr */
1959 xhci_set_ep_state(xhci, epctx, stctx, epctx->state);
1960 xhci_ep_free_xfer(xfer);
1961 xfer = NULL;
1962 }
1963
1964 if (epctx->state == EP_HALTED) {
1965 break;
1966 }
1967 if (xfer != NULL && xfer->running_retry) {
1968 DPRINTF("xhci: xfer nacked, stopping schedule\n");
1969 epctx->retry = xfer;
1970 xhci_xfer_unmap(xfer);
1971 break;
1972 }
1973 if (count++ > TRANSFER_LIMIT) {
1974 trace_usb_xhci_enforced_limit("transfers");
1975 break;
1976 }
1977 }
1978 epctx->kick_active--;
1979
1980 ep = xhci_epid_to_usbep(epctx);
1981 if (ep) {
1982 usb_device_flush_ep_queue(ep->dev, ep);
1983 }
1984 }
1985
1986 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid)
1987 {
1988 trace_usb_xhci_slot_enable(slotid);
1989 assert(slotid >= 1 && slotid <= xhci->numslots);
1990 xhci->slots[slotid-1].enabled = 1;
1991 xhci->slots[slotid-1].uport = NULL;
1992 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31);
1993
1994 return CC_SUCCESS;
1995 }
1996
1997 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid)
1998 {
1999 int i;
2000
2001 trace_usb_xhci_slot_disable(slotid);
2002 assert(slotid >= 1 && slotid <= xhci->numslots);
2003
2004 for (i = 1; i <= 31; i++) {
2005 if (xhci->slots[slotid-1].eps[i-1]) {
2006 xhci_disable_ep(xhci, slotid, i);
2007 }
2008 }
2009
2010 xhci->slots[slotid-1].enabled = 0;
2011 xhci->slots[slotid-1].addressed = 0;
2012 xhci->slots[slotid-1].uport = NULL;
2013 xhci->slots[slotid-1].intr = 0;
2014 return CC_SUCCESS;
2015 }
2016
2017 static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx)
2018 {
2019 USBPort *uport;
2020 char path[32];
2021 int i, pos, port;
2022
2023 port = (slot_ctx[1]>>16) & 0xFF;
2024 if (port < 1 || port > xhci->numports) {
2025 return NULL;
2026 }
2027 port = xhci->ports[port-1].uport->index+1;
2028 pos = snprintf(path, sizeof(path), "%d", port);
2029 for (i = 0; i < 5; i++) {
2030 port = (slot_ctx[0] >> 4*i) & 0x0f;
2031 if (!port) {
2032 break;
2033 }
2034 pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port);
2035 }
2036
2037 QTAILQ_FOREACH(uport, &xhci->bus.used, next) {
2038 if (strcmp(uport->path, path) == 0) {
2039 return uport;
2040 }
2041 }
2042 return NULL;
2043 }
2044
2045 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
2046 uint64_t pictx, bool bsr)
2047 {
2048 XHCISlot *slot;
2049 USBPort *uport;
2050 USBDevice *dev;
2051 dma_addr_t ictx, octx, dcbaap;
2052 uint64_t poctx;
2053 uint32_t ictl_ctx[2];
2054 uint32_t slot_ctx[4];
2055 uint32_t ep0_ctx[5];
2056 int i;
2057 TRBCCode res;
2058
2059 assert(slotid >= 1 && slotid <= xhci->numslots);
2060
2061 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
2062 poctx = ldq_le_dma(xhci->as, dcbaap + 8 * slotid);
2063 ictx = xhci_mask64(pictx);
2064 octx = xhci_mask64(poctx);
2065
2066 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2067 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2068
2069 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2070
2071 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) {
2072 DPRINTF("xhci: invalid input context control %08x %08x\n",
2073 ictl_ctx[0], ictl_ctx[1]);
2074 return CC_TRB_ERROR;
2075 }
2076
2077 xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx));
2078 xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx));
2079
2080 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2081 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2082
2083 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2084 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2085
2086 uport = xhci_lookup_uport(xhci, slot_ctx);
2087 if (uport == NULL) {
2088 DPRINTF("xhci: port not found\n");
2089 return CC_TRB_ERROR;
2090 }
2091 trace_usb_xhci_slot_address(slotid, uport->path);
2092
2093 dev = uport->dev;
2094 if (!dev || !dev->attached) {
2095 DPRINTF("xhci: port %s not connected\n", uport->path);
2096 return CC_USB_TRANSACTION_ERROR;
2097 }
2098
2099 for (i = 0; i < xhci->numslots; i++) {
2100 if (i == slotid-1) {
2101 continue;
2102 }
2103 if (xhci->slots[i].uport == uport) {
2104 DPRINTF("xhci: port %s already assigned to slot %d\n",
2105 uport->path, i+1);
2106 return CC_TRB_ERROR;
2107 }
2108 }
2109
2110 slot = &xhci->slots[slotid-1];
2111 slot->uport = uport;
2112 slot->ctx = octx;
2113 slot->intr = get_field(slot_ctx[2], TRB_INTR);
2114
2115 /* Make sure device is in USB_STATE_DEFAULT state */
2116 usb_device_reset(dev);
2117 if (bsr) {
2118 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT;
2119 } else {
2120 USBPacket p;
2121 uint8_t buf[1];
2122
2123 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid;
2124 memset(&p, 0, sizeof(p));
2125 usb_packet_addbuf(&p, buf, sizeof(buf));
2126 usb_packet_setup(&p, USB_TOKEN_OUT,
2127 usb_ep_get(dev, USB_TOKEN_OUT, 0), 0,
2128 0, false, false);
2129 usb_device_handle_control(dev, &p,
2130 DeviceOutRequest | USB_REQ_SET_ADDRESS,
2131 slotid, 0, 0, NULL);
2132 assert(p.status != USB_RET_ASYNC);
2133 usb_packet_cleanup(&p);
2134 }
2135
2136 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx);
2137
2138 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2139 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2140 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2141 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2142
2143 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2144 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2145
2146 xhci->slots[slotid-1].addressed = 1;
2147 return res;
2148 }
2149
2150
2151 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid,
2152 uint64_t pictx, bool dc)
2153 {
2154 dma_addr_t ictx, octx;
2155 uint32_t ictl_ctx[2];
2156 uint32_t slot_ctx[4];
2157 uint32_t islot_ctx[4];
2158 uint32_t ep_ctx[5];
2159 int i;
2160 TRBCCode res;
2161
2162 trace_usb_xhci_slot_configure(slotid);
2163 assert(slotid >= 1 && slotid <= xhci->numslots);
2164
2165 ictx = xhci_mask64(pictx);
2166 octx = xhci->slots[slotid-1].ctx;
2167
2168 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2169 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2170
2171 if (dc) {
2172 for (i = 2; i <= 31; i++) {
2173 if (xhci->slots[slotid-1].eps[i-1]) {
2174 xhci_disable_ep(xhci, slotid, i);
2175 }
2176 }
2177
2178 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2179 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2180 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT;
2181 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2182 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2183 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2184
2185 return CC_SUCCESS;
2186 }
2187
2188 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2189
2190 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) {
2191 DPRINTF("xhci: invalid input context control %08x %08x\n",
2192 ictl_ctx[0], ictl_ctx[1]);
2193 return CC_TRB_ERROR;
2194 }
2195
2196 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2197 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2198
2199 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) {
2200 DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]);
2201 return CC_CONTEXT_STATE_ERROR;
2202 }
2203
2204 xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]);
2205
2206 for (i = 2; i <= 31; i++) {
2207 if (ictl_ctx[0] & (1<<i)) {
2208 xhci_disable_ep(xhci, slotid, i);
2209 }
2210 if (ictl_ctx[1] & (1<<i)) {
2211 xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx));
2212 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n",
2213 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2214 ep_ctx[3], ep_ctx[4]);
2215 xhci_disable_ep(xhci, slotid, i);
2216 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx);
2217 if (res != CC_SUCCESS) {
2218 return res;
2219 }
2220 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n",
2221 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2222 ep_ctx[3], ep_ctx[4]);
2223 xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx));
2224 }
2225 }
2226
2227 res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]);
2228 if (res != CC_SUCCESS) {
2229 for (i = 2; i <= 31; i++) {
2230 if (ictl_ctx[1] & (1u << i)) {
2231 xhci_disable_ep(xhci, slotid, i);
2232 }
2233 }
2234 return res;
2235 }
2236
2237 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2238 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT;
2239 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT);
2240 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK <<
2241 SLOT_CONTEXT_ENTRIES_SHIFT);
2242 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2243 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2244
2245 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2246
2247 return CC_SUCCESS;
2248 }
2249
2250
2251 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid,
2252 uint64_t pictx)
2253 {
2254 dma_addr_t ictx, octx;
2255 uint32_t ictl_ctx[2];
2256 uint32_t iep0_ctx[5];
2257 uint32_t ep0_ctx[5];
2258 uint32_t islot_ctx[4];
2259 uint32_t slot_ctx[4];
2260
2261 trace_usb_xhci_slot_evaluate(slotid);
2262 assert(slotid >= 1 && slotid <= xhci->numslots);
2263
2264 ictx = xhci_mask64(pictx);
2265 octx = xhci->slots[slotid-1].ctx;
2266
2267 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2268 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2269
2270 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2271
2272 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) {
2273 DPRINTF("xhci: invalid input context control %08x %08x\n",
2274 ictl_ctx[0], ictl_ctx[1]);
2275 return CC_TRB_ERROR;
2276 }
2277
2278 if (ictl_ctx[1] & 0x1) {
2279 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2280
2281 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2282 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]);
2283
2284 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2285
2286 slot_ctx[1] &= ~0xFFFF; /* max exit latency */
2287 slot_ctx[1] |= islot_ctx[1] & 0xFFFF;
2288 /* update interrupter target field */
2289 xhci->slots[slotid-1].intr = get_field(islot_ctx[2], TRB_INTR);
2290 set_field(&slot_ctx[2], xhci->slots[slotid-1].intr, TRB_INTR);
2291
2292 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2293 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2294
2295 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2296 }
2297
2298 if (ictl_ctx[1] & 0x2) {
2299 xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx));
2300
2301 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2302 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2],
2303 iep0_ctx[3], iep0_ctx[4]);
2304
2305 xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2306
2307 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/
2308 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000;
2309
2310 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2311 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2312
2313 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2314 }
2315
2316 return CC_SUCCESS;
2317 }
2318
2319 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid)
2320 {
2321 uint32_t slot_ctx[4];
2322 dma_addr_t octx;
2323 int i;
2324
2325 trace_usb_xhci_slot_reset(slotid);
2326 assert(slotid >= 1 && slotid <= xhci->numslots);
2327
2328 octx = xhci->slots[slotid-1].ctx;
2329
2330 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2331
2332 for (i = 2; i <= 31; i++) {
2333 if (xhci->slots[slotid-1].eps[i-1]) {
2334 xhci_disable_ep(xhci, slotid, i);
2335 }
2336 }
2337
2338 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2339 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2340 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT;
2341 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2342 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2343 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2344
2345 return CC_SUCCESS;
2346 }
2347
2348 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb)
2349 {
2350 unsigned int slotid;
2351 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK;
2352 if (slotid < 1 || slotid > xhci->numslots) {
2353 DPRINTF("xhci: bad slot id %d\n", slotid);
2354 event->ccode = CC_TRB_ERROR;
2355 return 0;
2356 } else if (!xhci->slots[slotid-1].enabled) {
2357 DPRINTF("xhci: slot id %d not enabled\n", slotid);
2358 event->ccode = CC_SLOT_NOT_ENABLED_ERROR;
2359 return 0;
2360 }
2361 return slotid;
2362 }
2363
2364 /* cleanup slot state on usb device detach */
2365 static void xhci_detach_slot(XHCIState *xhci, USBPort *uport)
2366 {
2367 int slot, ep;
2368
2369 for (slot = 0; slot < xhci->numslots; slot++) {
2370 if (xhci->slots[slot].uport == uport) {
2371 break;
2372 }
2373 }
2374 if (slot == xhci->numslots) {
2375 return;
2376 }
2377
2378 for (ep = 0; ep < 31; ep++) {
2379 if (xhci->slots[slot].eps[ep]) {
2380 xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0);
2381 }
2382 }
2383 xhci->slots[slot].uport = NULL;
2384 }
2385
2386 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx)
2387 {
2388 dma_addr_t ctx;
2389 uint8_t bw_ctx[xhci->numports+1];
2390
2391 DPRINTF("xhci_get_port_bandwidth()\n");
2392
2393 ctx = xhci_mask64(pctx);
2394
2395 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx);
2396
2397 /* TODO: actually implement real values here */
2398 bw_ctx[0] = 0;
2399 memset(&bw_ctx[1], 80, xhci->numports); /* 80% */
2400 dma_memory_write(xhci->as, ctx, bw_ctx, sizeof(bw_ctx));
2401
2402 return CC_SUCCESS;
2403 }
2404
2405 static uint32_t rotl(uint32_t v, unsigned count)
2406 {
2407 count &= 31;
2408 return (v << count) | (v >> (32 - count));
2409 }
2410
2411
2412 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo)
2413 {
2414 uint32_t val;
2415 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F));
2416 val += rotl(lo + 0x49434878, hi & 0x1F);
2417 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F);
2418 return ~val;
2419 }
2420
2421 static void xhci_process_commands(XHCIState *xhci)
2422 {
2423 XHCITRB trb;
2424 TRBType type;
2425 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS};
2426 dma_addr_t addr;
2427 unsigned int i, slotid = 0, count = 0;
2428
2429 DPRINTF("xhci_process_commands()\n");
2430 if (!xhci_running(xhci)) {
2431 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n");
2432 return;
2433 }
2434
2435 xhci->crcr_low |= CRCR_CRR;
2436
2437 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) {
2438 event.ptr = addr;
2439 switch (type) {
2440 case CR_ENABLE_SLOT:
2441 for (i = 0; i < xhci->numslots; i++) {
2442 if (!xhci->slots[i].enabled) {
2443 break;
2444 }
2445 }
2446 if (i >= xhci->numslots) {
2447 DPRINTF("xhci: no device slots available\n");
2448 event.ccode = CC_NO_SLOTS_ERROR;
2449 } else {
2450 slotid = i+1;
2451 event.ccode = xhci_enable_slot(xhci, slotid);
2452 }
2453 break;
2454 case CR_DISABLE_SLOT:
2455 slotid = xhci_get_slot(xhci, &event, &trb);
2456 if (slotid) {
2457 event.ccode = xhci_disable_slot(xhci, slotid);
2458 }
2459 break;
2460 case CR_ADDRESS_DEVICE:
2461 slotid = xhci_get_slot(xhci, &event, &trb);
2462 if (slotid) {
2463 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter,
2464 trb.control & TRB_CR_BSR);
2465 }
2466 break;
2467 case CR_CONFIGURE_ENDPOINT:
2468 slotid = xhci_get_slot(xhci, &event, &trb);
2469 if (slotid) {
2470 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter,
2471 trb.control & TRB_CR_DC);
2472 }
2473 break;
2474 case CR_EVALUATE_CONTEXT:
2475 slotid = xhci_get_slot(xhci, &event, &trb);
2476 if (slotid) {
2477 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter);
2478 }
2479 break;
2480 case CR_STOP_ENDPOINT:
2481 slotid = xhci_get_slot(xhci, &event, &trb);
2482 if (slotid) {
2483 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2484 & TRB_CR_EPID_MASK;
2485 event.ccode = xhci_stop_ep(xhci, slotid, epid);
2486 }
2487 break;
2488 case CR_RESET_ENDPOINT:
2489 slotid = xhci_get_slot(xhci, &event, &trb);
2490 if (slotid) {
2491 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2492 & TRB_CR_EPID_MASK;
2493 event.ccode = xhci_reset_ep(xhci, slotid, epid);
2494 }
2495 break;
2496 case CR_SET_TR_DEQUEUE:
2497 slotid = xhci_get_slot(xhci, &event, &trb);
2498 if (slotid) {
2499 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2500 & TRB_CR_EPID_MASK;
2501 unsigned int streamid = (trb.status >> 16) & 0xffff;
2502 event.ccode = xhci_set_ep_dequeue(xhci, slotid,
2503 epid, streamid,
2504 trb.parameter);
2505 }
2506 break;
2507 case CR_RESET_DEVICE:
2508 slotid = xhci_get_slot(xhci, &event, &trb);
2509 if (slotid) {
2510 event.ccode = xhci_reset_slot(xhci, slotid);
2511 }
2512 break;
2513 case CR_GET_PORT_BANDWIDTH:
2514 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter);
2515 break;
2516 case CR_NOOP:
2517 event.ccode = CC_SUCCESS;
2518 break;
2519 case CR_VENDOR_NEC_FIRMWARE_REVISION:
2520 if (xhci->nec_quirks) {
2521 event.type = 48; /* NEC reply */
2522 event.length = 0x3025;
2523 } else {
2524 event.ccode = CC_TRB_ERROR;
2525 }
2526 break;
2527 case CR_VENDOR_NEC_CHALLENGE_RESPONSE:
2528 if (xhci->nec_quirks) {
2529 uint32_t chi = trb.parameter >> 32;
2530 uint32_t clo = trb.parameter;
2531 uint32_t val = xhci_nec_challenge(chi, clo);
2532 event.length = val & 0xFFFF;
2533 event.epid = val >> 16;
2534 slotid = val >> 24;
2535 event.type = 48; /* NEC reply */
2536 } else {
2537 event.ccode = CC_TRB_ERROR;
2538 }
2539 break;
2540 default:
2541 trace_usb_xhci_unimplemented("command", type);
2542 event.ccode = CC_TRB_ERROR;
2543 break;
2544 }
2545 event.slotid = slotid;
2546 xhci_event(xhci, &event, 0);
2547
2548 if (count++ > COMMAND_LIMIT) {
2549 trace_usb_xhci_enforced_limit("commands");
2550 return;
2551 }
2552 }
2553 }
2554
2555 static bool xhci_port_have_device(XHCIPort *port)
2556 {
2557 if (!port->uport->dev || !port->uport->dev->attached) {
2558 return false; /* no device present */
2559 }
2560 if (!((1 << port->uport->dev->speed) & port->speedmask)) {
2561 return false; /* speed mismatch */
2562 }
2563 return true;
2564 }
2565
2566 static void xhci_port_notify(XHCIPort *port, uint32_t bits)
2567 {
2568 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
2569 port->portnr << 24 };
2570
2571 if ((port->portsc & bits) == bits) {
2572 return;
2573 }
2574 trace_usb_xhci_port_notify(port->portnr, bits);
2575 port->portsc |= bits;
2576 if (!xhci_running(port->xhci)) {
2577 return;
2578 }
2579 xhci_event(port->xhci, &ev, 0);
2580 }
2581
2582 static void xhci_port_update(XHCIPort *port, int is_detach)
2583 {
2584 uint32_t pls = PLS_RX_DETECT;
2585
2586 assert(port);
2587 port->portsc = PORTSC_PP;
2588 if (!is_detach && xhci_port_have_device(port)) {
2589 port->portsc |= PORTSC_CCS;
2590 switch (port->uport->dev->speed) {
2591 case USB_SPEED_LOW:
2592 port->portsc |= PORTSC_SPEED_LOW;
2593 pls = PLS_POLLING;
2594 break;
2595 case USB_SPEED_FULL:
2596 port->portsc |= PORTSC_SPEED_FULL;
2597 pls = PLS_POLLING;
2598 break;
2599 case USB_SPEED_HIGH:
2600 port->portsc |= PORTSC_SPEED_HIGH;
2601 pls = PLS_POLLING;
2602 break;
2603 case USB_SPEED_SUPER:
2604 port->portsc |= PORTSC_SPEED_SUPER;
2605 port->portsc |= PORTSC_PED;
2606 pls = PLS_U0;
2607 break;
2608 }
2609 }
2610 set_field(&port->portsc, pls, PORTSC_PLS);
2611 trace_usb_xhci_port_link(port->portnr, pls);
2612 xhci_port_notify(port, PORTSC_CSC);
2613 }
2614
2615 static void xhci_port_reset(XHCIPort *port, bool warm_reset)
2616 {
2617 trace_usb_xhci_port_reset(port->portnr, warm_reset);
2618
2619 if (!xhci_port_have_device(port)) {
2620 return;
2621 }
2622
2623 usb_device_reset(port->uport->dev);
2624
2625 switch (port->uport->dev->speed) {
2626 case USB_SPEED_SUPER:
2627 if (warm_reset) {
2628 port->portsc |= PORTSC_WRC;
2629 }
2630 /* fall through */
2631 case USB_SPEED_LOW:
2632 case USB_SPEED_FULL:
2633 case USB_SPEED_HIGH:
2634 set_field(&port->portsc, PLS_U0, PORTSC_PLS);
2635 trace_usb_xhci_port_link(port->portnr, PLS_U0);
2636 port->portsc |= PORTSC_PED;
2637 break;
2638 }
2639
2640 port->portsc &= ~PORTSC_PR;
2641 xhci_port_notify(port, PORTSC_PRC);
2642 }
2643
2644 static void xhci_reset(DeviceState *dev)
2645 {
2646 XHCIState *xhci = XHCI(dev);
2647 int i;
2648
2649 trace_usb_xhci_reset();
2650 if (!(xhci->usbsts & USBSTS_HCH)) {
2651 DPRINTF("xhci: reset while running!\n");
2652 }
2653
2654 xhci->usbcmd = 0;
2655 xhci->usbsts = USBSTS_HCH;
2656 xhci->dnctrl = 0;
2657 xhci->crcr_low = 0;
2658 xhci->crcr_high = 0;
2659 xhci->dcbaap_low = 0;
2660 xhci->dcbaap_high = 0;
2661 xhci->config = 0;
2662
2663 for (i = 0; i < xhci->numslots; i++) {
2664 xhci_disable_slot(xhci, i+1);
2665 }
2666
2667 for (i = 0; i < xhci->numports; i++) {
2668 xhci_port_update(xhci->ports + i, 0);
2669 }
2670
2671 for (i = 0; i < xhci->numintrs; i++) {
2672 xhci->intr[i].iman = 0;
2673 xhci->intr[i].imod = 0;
2674 xhci->intr[i].erstsz = 0;
2675 xhci->intr[i].erstba_low = 0;
2676 xhci->intr[i].erstba_high = 0;
2677 xhci->intr[i].erdp_low = 0;
2678 xhci->intr[i].erdp_high = 0;
2679
2680 xhci->intr[i].er_ep_idx = 0;
2681 xhci->intr[i].er_pcs = 1;
2682 xhci->intr[i].ev_buffer_put = 0;
2683 xhci->intr[i].ev_buffer_get = 0;
2684 }
2685
2686 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2687 xhci_mfwrap_update(xhci);
2688 }
2689
2690 static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size)
2691 {
2692 XHCIState *xhci = ptr;
2693 uint32_t ret;
2694
2695 switch (reg) {
2696 case 0x00: /* HCIVERSION, CAPLENGTH */
2697 ret = 0x01000000 | LEN_CAP;
2698 break;
2699 case 0x04: /* HCSPARAMS 1 */
2700 ret = ((xhci->numports_2+xhci->numports_3)<<24)
2701 | (xhci->numintrs<<8) | xhci->numslots;
2702 break;
2703 case 0x08: /* HCSPARAMS 2 */
2704 ret = 0x0000000f;
2705 break;
2706 case 0x0c: /* HCSPARAMS 3 */
2707 ret = 0x00000000;
2708 break;
2709 case 0x10: /* HCCPARAMS */
2710 if (sizeof(dma_addr_t) == 4) {
2711 ret = 0x00080000 | (xhci->max_pstreams_mask << 12);
2712 } else {
2713 ret = 0x00080001 | (xhci->max_pstreams_mask << 12);
2714 }
2715 break;
2716 case 0x14: /* DBOFF */
2717 ret = OFF_DOORBELL;
2718 break;
2719 case 0x18: /* RTSOFF */
2720 ret = OFF_RUNTIME;
2721 break;
2722
2723 /* extended capabilities */
2724 case 0x20: /* Supported Protocol:00 */
2725 ret = 0x02000402; /* USB 2.0 */
2726 break;
2727 case 0x24: /* Supported Protocol:04 */
2728 ret = 0x20425355; /* "USB " */
2729 break;
2730 case 0x28: /* Supported Protocol:08 */
2731 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2732 ret = (xhci->numports_2<<8) | (xhci->numports_3+1);
2733 } else {
2734 ret = (xhci->numports_2<<8) | 1;
2735 }
2736 break;
2737 case 0x2c: /* Supported Protocol:0c */
2738 ret = 0x00000000; /* reserved */
2739 break;
2740 case 0x30: /* Supported Protocol:00 */
2741 ret = 0x03000002; /* USB 3.0 */
2742 break;
2743 case 0x34: /* Supported Protocol:04 */
2744 ret = 0x20425355; /* "USB " */
2745 break;
2746 case 0x38: /* Supported Protocol:08 */
2747 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2748 ret = (xhci->numports_3<<8) | 1;
2749 } else {
2750 ret = (xhci->numports_3<<8) | (xhci->numports_2+1);
2751 }
2752 break;
2753 case 0x3c: /* Supported Protocol:0c */
2754 ret = 0x00000000; /* reserved */
2755 break;
2756 default:
2757 trace_usb_xhci_unimplemented("cap read", reg);
2758 ret = 0;
2759 }
2760
2761 trace_usb_xhci_cap_read(reg, ret);
2762 return ret;
2763 }
2764
2765 static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size)
2766 {
2767 XHCIPort *port = ptr;
2768 uint32_t ret;
2769
2770 switch (reg) {
2771 case 0x00: /* PORTSC */
2772 ret = port->portsc;
2773 break;
2774 case 0x04: /* PORTPMSC */
2775 case 0x08: /* PORTLI */
2776 ret = 0;
2777 break;
2778 case 0x0c: /* reserved */
2779 default:
2780 trace_usb_xhci_unimplemented("port read", reg);
2781 ret = 0;
2782 }
2783
2784 trace_usb_xhci_port_read(port->portnr, reg, ret);
2785 return ret;
2786 }
2787
2788 static void xhci_port_write(void *ptr, hwaddr reg,
2789 uint64_t val, unsigned size)
2790 {
2791 XHCIPort *port = ptr;
2792 uint32_t portsc, notify;
2793
2794 trace_usb_xhci_port_write(port->portnr, reg, val);
2795
2796 switch (reg) {
2797 case 0x00: /* PORTSC */
2798 /* write-1-to-start bits */
2799 if (val & PORTSC_WPR) {
2800 xhci_port_reset(port, true);
2801 break;
2802 }
2803 if (val & PORTSC_PR) {
2804 xhci_port_reset(port, false);
2805 break;
2806 }
2807
2808 portsc = port->portsc;
2809 notify = 0;
2810 /* write-1-to-clear bits*/
2811 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC|
2812 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
2813 if (val & PORTSC_LWS) {
2814 /* overwrite PLS only when LWS=1 */
2815 uint32_t old_pls = get_field(port->portsc, PORTSC_PLS);
2816 uint32_t new_pls = get_field(val, PORTSC_PLS);
2817 switch (new_pls) {
2818 case PLS_U0:
2819 if (old_pls != PLS_U0) {
2820 set_field(&portsc, new_pls, PORTSC_PLS);
2821 trace_usb_xhci_port_link(port->portnr, new_pls);
2822 notify = PORTSC_PLC;
2823 }
2824 break;
2825 case PLS_U3:
2826 if (old_pls < PLS_U3) {
2827 set_field(&portsc, new_pls, PORTSC_PLS);
2828 trace_usb_xhci_port_link(port->portnr, new_pls);
2829 }
2830 break;
2831 case PLS_RESUME:
2832 /* windows does this for some reason, don't spam stderr */
2833 break;
2834 default:
2835 DPRINTF("%s: ignore pls write (old %d, new %d)\n",
2836 __func__, old_pls, new_pls);
2837 break;
2838 }
2839 }
2840 /* read/write bits */
2841 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
2842 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE));
2843 port->portsc = portsc;
2844 if (notify) {
2845 xhci_port_notify(port, notify);
2846 }
2847 break;
2848 case 0x04: /* PORTPMSC */
2849 case 0x08: /* PORTLI */
2850 default:
2851 trace_usb_xhci_unimplemented("port write", reg);
2852 }
2853 }
2854
2855 static uint64_t xhci_oper_read(void *ptr, hwaddr reg, unsigned size)
2856 {
2857 XHCIState *xhci = ptr;
2858 uint32_t ret;
2859
2860 switch (reg) {
2861 case 0x00: /* USBCMD */
2862 ret = xhci->usbcmd;
2863 break;
2864 case 0x04: /* USBSTS */
2865 ret = xhci->usbsts;
2866 break;
2867 case 0x08: /* PAGESIZE */
2868 ret = 1; /* 4KiB */
2869 break;
2870 case 0x14: /* DNCTRL */
2871 ret = xhci->dnctrl;
2872 break;
2873 case 0x18: /* CRCR low */
2874 ret = xhci->crcr_low & ~0xe;
2875 break;
2876 case 0x1c: /* CRCR high */
2877 ret = xhci->crcr_high;
2878 break;
2879 case 0x30: /* DCBAAP low */
2880 ret = xhci->dcbaap_low;
2881 break;
2882 case 0x34: /* DCBAAP high */
2883 ret = xhci->dcbaap_high;
2884 break;
2885 case 0x38: /* CONFIG */
2886 ret = xhci->config;
2887 break;
2888 default:
2889 trace_usb_xhci_unimplemented("oper read", reg);
2890 ret = 0;
2891 }
2892
2893 trace_usb_xhci_oper_read(reg, ret);
2894 return ret;
2895 }
2896
2897 static void xhci_oper_write(void *ptr, hwaddr reg,
2898 uint64_t val, unsigned size)
2899 {
2900 XHCIState *xhci = XHCI(ptr);
2901
2902 trace_usb_xhci_oper_write(reg, val);
2903
2904 switch (reg) {
2905 case 0x00: /* USBCMD */
2906 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) {
2907 xhci_run(xhci);
2908 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) {
2909 xhci_stop(xhci);
2910 }
2911 if (val & USBCMD_CSS) {
2912 /* save state */
2913 xhci->usbsts &= ~USBSTS_SRE;
2914 }
2915 if (val & USBCMD_CRS) {
2916 /* restore state */
2917 xhci->usbsts |= USBSTS_SRE;
2918 }
2919 xhci->usbcmd = val & 0xc0f;
2920 xhci_mfwrap_update(xhci);
2921 if (val & USBCMD_HCRST) {
2922 xhci_reset(DEVICE(xhci));
2923 }
2924 xhci_intr_update(xhci, 0);
2925 break;
2926
2927 case 0x04: /* USBSTS */
2928 /* these bits are write-1-to-clear */
2929 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE));
2930 xhci_intr_update(xhci, 0);
2931 break;
2932
2933 case 0x14: /* DNCTRL */
2934 xhci->dnctrl = val & 0xffff;
2935 break;
2936 case 0x18: /* CRCR low */
2937 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR);
2938 break;
2939 case 0x1c: /* CRCR high */
2940 xhci->crcr_high = val;
2941 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) {
2942 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED};
2943 xhci->crcr_low &= ~CRCR_CRR;
2944 xhci_event(xhci, &event, 0);
2945 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low);
2946 } else {
2947 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val);
2948 xhci_ring_init(xhci, &xhci->cmd_ring, base);
2949 }
2950 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS);
2951 break;
2952 case 0x30: /* DCBAAP low */
2953 xhci->dcbaap_low = val & 0xffffffc0;
2954 break;
2955 case 0x34: /* DCBAAP high */
2956 xhci->dcbaap_high = val;
2957 break;
2958 case 0x38: /* CONFIG */
2959 xhci->config = val & 0xff;
2960 break;
2961 default:
2962 trace_usb_xhci_unimplemented("oper write", reg);
2963 }
2964 }
2965
2966 static uint64_t xhci_runtime_read(void *ptr, hwaddr reg,
2967 unsigned size)
2968 {
2969 XHCIState *xhci = ptr;
2970 uint32_t ret = 0;
2971
2972 if (reg < 0x20) {
2973 switch (reg) {
2974 case 0x00: /* MFINDEX */
2975 ret = xhci_mfindex_get(xhci) & 0x3fff;
2976 break;
2977 default:
2978 trace_usb_xhci_unimplemented("runtime read", reg);
2979 break;
2980 }
2981 } else {
2982 int v = (reg - 0x20) / 0x20;
2983 XHCIInterrupter *intr = &xhci->intr[v];
2984 switch (reg & 0x1f) {
2985 case 0x00: /* IMAN */
2986 ret = intr->iman;
2987 break;
2988 case 0x04: /* IMOD */
2989 ret = intr->imod;
2990 break;
2991 case 0x08: /* ERSTSZ */
2992 ret = intr->erstsz;
2993 break;
2994 case 0x10: /* ERSTBA low */
2995 ret = intr->erstba_low;
2996 break;
2997 case 0x14: /* ERSTBA high */
2998 ret = intr->erstba_high;
2999 break;
3000 case 0x18: /* ERDP low */
3001 ret = intr->erdp_low;
3002 break;
3003 case 0x1c: /* ERDP high */
3004 ret = intr->erdp_high;
3005 break;
3006 }
3007 }
3008
3009 trace_usb_xhci_runtime_read(reg, ret);
3010 return ret;
3011 }
3012
3013 static void xhci_runtime_write(void *ptr, hwaddr reg,
3014 uint64_t val, unsigned size)
3015 {
3016 XHCIState *xhci = ptr;
3017 XHCIInterrupter *intr;
3018 int v;
3019
3020 trace_usb_xhci_runtime_write(reg, val);
3021
3022 if (reg < 0x20) {
3023 trace_usb_xhci_unimplemented("runtime write", reg);
3024 return;
3025 }
3026 v = (reg - 0x20) / 0x20;
3027 intr = &xhci->intr[v];
3028
3029 switch (reg & 0x1f) {
3030 case 0x00: /* IMAN */
3031 if (val & IMAN_IP) {
3032 intr->iman &= ~IMAN_IP;
3033 }
3034 intr->iman &= ~IMAN_IE;
3035 intr->iman |= val & IMAN_IE;
3036 xhci_intr_update(xhci, v);
3037 break;
3038 case 0x04: /* IMOD */
3039 intr->imod = val;
3040 break;
3041 case 0x08: /* ERSTSZ */
3042 intr->erstsz = val & 0xffff;
3043 break;
3044 case 0x10: /* ERSTBA low */
3045 if (xhci->nec_quirks) {
3046 /* NEC driver bug: it doesn't align this to 64 bytes */
3047 intr->erstba_low = val & 0xfffffff0;
3048 } else {
3049 intr->erstba_low = val & 0xffffffc0;
3050 }
3051 break;
3052 case 0x14: /* ERSTBA high */
3053 intr->erstba_high = val;
3054 xhci_er_reset(xhci, v);
3055 break;
3056 case 0x18: /* ERDP low */
3057 if (val & ERDP_EHB) {
3058 intr->erdp_low &= ~ERDP_EHB;
3059 }
3060 intr->erdp_low = (val & ~ERDP_EHB) | (intr->erdp_low & ERDP_EHB);
3061 if (val & ERDP_EHB) {
3062 dma_addr_t erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
3063 unsigned int dp_idx = (erdp - intr->er_start) / TRB_SIZE;
3064 if (erdp >= intr->er_start &&
3065 erdp < (intr->er_start + TRB_SIZE * intr->er_size) &&
3066 dp_idx != intr->er_ep_idx) {
3067 xhci_intr_raise(xhci, v);
3068 }
3069 }
3070 break;
3071 case 0x1c: /* ERDP high */
3072 intr->erdp_high = val;
3073 break;
3074 default:
3075 trace_usb_xhci_unimplemented("oper write", reg);
3076 }
3077 }
3078
3079 static uint64_t xhci_doorbell_read(void *ptr, hwaddr reg,
3080 unsigned size)
3081 {
3082 /* doorbells always read as 0 */
3083 trace_usb_xhci_doorbell_read(reg, 0);
3084 return 0;
3085 }
3086
3087 static void xhci_doorbell_write(void *ptr, hwaddr reg,
3088 uint64_t val, unsigned size)
3089 {
3090 XHCIState *xhci = ptr;
3091 unsigned int epid, streamid;
3092
3093 trace_usb_xhci_doorbell_write(reg, val);
3094
3095 if (!xhci_running(xhci)) {
3096 DPRINTF("xhci: wrote doorbell while xHC stopped or paused\n");
3097 return;
3098 }
3099
3100 reg >>= 2;
3101
3102 if (reg == 0) {
3103 if (val == 0) {
3104 xhci_process_commands(xhci);
3105 } else {
3106 DPRINTF("xhci: bad doorbell 0 write: 0x%x\n",
3107 (uint32_t)val);
3108 }
3109 } else {
3110 epid = val & 0xff;
3111 streamid = (val >> 16) & 0xffff;
3112 if (reg > xhci->numslots) {
3113 DPRINTF("xhci: bad doorbell %d\n", (int)reg);
3114 } else if (epid == 0 || epid > 31) {
3115 DPRINTF("xhci: bad doorbell %d write: 0x%x\n",
3116 (int)reg, (uint32_t)val);
3117 } else {
3118 xhci_kick_ep(xhci, reg, epid, streamid);
3119 }
3120 }
3121 }
3122
3123 static void xhci_cap_write(void *opaque, hwaddr addr, uint64_t val,
3124 unsigned width)
3125 {
3126 /* nothing */
3127 }
3128
3129 static const MemoryRegionOps xhci_cap_ops = {
3130 .read = xhci_cap_read,
3131 .write = xhci_cap_write,
3132 .valid.min_access_size = 1,
3133 .valid.max_access_size = 4,
3134 .impl.min_access_size = 4,
3135 .impl.max_access_size = 4,
3136 .endianness = DEVICE_LITTLE_ENDIAN,
3137 };
3138
3139 static const MemoryRegionOps xhci_oper_ops = {
3140 .read = xhci_oper_read,
3141 .write = xhci_oper_write,
3142 .valid.min_access_size = 4,
3143 .valid.max_access_size = sizeof(dma_addr_t),
3144 .endianness = DEVICE_LITTLE_ENDIAN,
3145 };
3146
3147 static const MemoryRegionOps xhci_port_ops = {
3148 .read = xhci_port_read,
3149 .write = xhci_port_write,
3150 .valid.min_access_size = 4,
3151 .valid.max_access_size = 4,
3152 .endianness = DEVICE_LITTLE_ENDIAN,
3153 };
3154
3155 static const MemoryRegionOps xhci_runtime_ops = {
3156 .read = xhci_runtime_read,
3157 .write = xhci_runtime_write,
3158 .valid.min_access_size = 4,
3159 .valid.max_access_size = sizeof(dma_addr_t),
3160 .endianness = DEVICE_LITTLE_ENDIAN,
3161 };
3162
3163 static const MemoryRegionOps xhci_doorbell_ops = {
3164 .read = xhci_doorbell_read,
3165 .write = xhci_doorbell_write,
3166 .valid.min_access_size = 4,
3167 .valid.max_access_size = 4,
3168 .endianness = DEVICE_LITTLE_ENDIAN,
3169 };
3170
3171 static void xhci_attach(USBPort *usbport)
3172 {
3173 XHCIState *xhci = usbport->opaque;
3174 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3175
3176 xhci_port_update(port, 0);
3177 }
3178
3179 static void xhci_detach(USBPort *usbport)
3180 {
3181 XHCIState *xhci = usbport->opaque;
3182 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3183
3184 xhci_detach_slot(xhci, usbport);
3185 xhci_port_update(port, 1);
3186 }
3187
3188 static void xhci_wakeup(USBPort *usbport)
3189 {
3190 XHCIState *xhci = usbport->opaque;
3191 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3192
3193 assert(port);
3194 if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
3195 return;
3196 }
3197 set_field(&port->portsc, PLS_RESUME, PORTSC_PLS);
3198 xhci_port_notify(port, PORTSC_PLC);
3199 }
3200
3201 static void xhci_complete(USBPort *port, USBPacket *packet)
3202 {
3203 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
3204
3205 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
3206 xhci_ep_nuke_one_xfer(xfer, 0);
3207 return;
3208 }
3209 xhci_try_complete_packet(xfer);
3210 xhci_kick_epctx(xfer->epctx, xfer->streamid);
3211 if (xfer->complete) {
3212 xhci_ep_free_xfer(xfer);
3213 }
3214 }
3215
3216 static void xhci_child_detach(USBPort *uport, USBDevice *child)
3217 {
3218 USBBus *bus = usb_bus_from_device(child);
3219 XHCIState *xhci = container_of(bus, XHCIState, bus);
3220
3221 xhci_detach_slot(xhci, child->port);
3222 }
3223
3224 static USBPortOps xhci_uport_ops = {
3225 .attach = xhci_attach,
3226 .detach = xhci_detach,
3227 .wakeup = xhci_wakeup,
3228 .complete = xhci_complete,
3229 .child_detach = xhci_child_detach,
3230 };
3231
3232 static int xhci_find_epid(USBEndpoint *ep)
3233 {
3234 if (ep->nr == 0) {
3235 return 1;
3236 }
3237 if (ep->pid == USB_TOKEN_IN) {
3238 return ep->nr * 2 + 1;
3239 } else {
3240 return ep->nr * 2;
3241 }
3242 }
3243
3244 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx)
3245 {
3246 USBPort *uport;
3247 uint32_t token;
3248
3249 if (!epctx) {
3250 return NULL;
3251 }
3252 uport = epctx->xhci->slots[epctx->slotid - 1].uport;
3253 if (!uport || !uport->dev) {
3254 return NULL;
3255 }
3256 token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT;
3257 return usb_ep_get(uport->dev, token, epctx->epid >> 1);
3258 }
3259
3260 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
3261 unsigned int stream)
3262 {
3263 XHCIState *xhci = container_of(bus, XHCIState, bus);
3264 int slotid;
3265
3266 DPRINTF("%s\n", __func__);
3267 slotid = ep->dev->addr;
3268 if (slotid == 0 || !xhci->slots[slotid-1].enabled) {
3269 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr);
3270 return;
3271 }
3272 xhci_kick_ep(xhci, slotid, xhci_find_epid(ep), stream);
3273 }
3274
3275 static USBBusOps xhci_bus_ops = {
3276 .wakeup_endpoint = xhci_wakeup_endpoint,
3277 };
3278
3279 static void usb_xhci_init(XHCIState *xhci)
3280 {
3281 XHCIPort *port;
3282 unsigned int i, usbports, speedmask;
3283
3284 xhci->usbsts = USBSTS_HCH;
3285
3286 if (xhci->numports_2 > XHCI_MAXPORTS_2) {
3287 xhci->numports_2 = XHCI_MAXPORTS_2;
3288 }
3289 if (xhci->numports_3 > XHCI_MAXPORTS_3) {
3290 xhci->numports_3 = XHCI_MAXPORTS_3;
3291 }
3292 usbports = MAX(xhci->numports_2, xhci->numports_3);
3293 xhci->numports = xhci->numports_2 + xhci->numports_3;
3294
3295 usb_bus_new(&xhci->bus, sizeof(xhci->bus), &xhci_bus_ops, xhci->hostOpaque);
3296
3297 for (i = 0; i < usbports; i++) {
3298 speedmask = 0;
3299 if (i < xhci->numports_2) {
3300 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3301 port = &xhci->ports[i + xhci->numports_3];
3302 port->portnr = i + 1 + xhci->numports_3;
3303 } else {
3304 port = &xhci->ports[i];
3305 port->portnr = i + 1;
3306 }
3307 port->uport = &xhci->uports[i];
3308 port->speedmask =
3309 USB_SPEED_MASK_LOW |
3310 USB_SPEED_MASK_FULL |
3311 USB_SPEED_MASK_HIGH;
3312 assert(i < XHCI_MAXPORTS);
3313 snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1);
3314 speedmask |= port->speedmask;
3315 }
3316 if (i < xhci->numports_3) {
3317 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3318 port = &xhci->ports[i];
3319 port->portnr = i + 1;
3320 } else {
3321 port = &xhci->ports[i + xhci->numports_2];
3322 port->portnr = i + 1 + xhci->numports_2;
3323 }
3324 port->uport = &xhci->uports[i];
3325 port->speedmask = USB_SPEED_MASK_SUPER;
3326 assert(i < XHCI_MAXPORTS);
3327 snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1);
3328 speedmask |= port->speedmask;
3329 }
3330 usb_register_port(&xhci->bus, &xhci->uports[i], xhci, i,
3331 &xhci_uport_ops, speedmask);
3332 }
3333 }
3334
3335 static void usb_xhci_realize(DeviceState *dev, Error **errp)
3336 {
3337 int i;
3338
3339 XHCIState *xhci = XHCI(dev);
3340
3341 if (xhci->numintrs > XHCI_MAXINTRS) {
3342 xhci->numintrs = XHCI_MAXINTRS;
3343 }
3344 while (xhci->numintrs & (xhci->numintrs - 1)) { /* ! power of 2 */
3345 xhci->numintrs++;
3346 }
3347 if (xhci->numintrs < 1) {
3348 xhci->numintrs = 1;
3349 }
3350 if (xhci->numslots > XHCI_MAXSLOTS) {
3351 xhci->numslots = XHCI_MAXSLOTS;
3352 }
3353 if (xhci->numslots < 1) {
3354 xhci->numslots = 1;
3355 }
3356 if (xhci_get_flag(xhci, XHCI_FLAG_ENABLE_STREAMS)) {
3357 xhci->max_pstreams_mask = 7; /* == 256 primary streams */
3358 } else {
3359 xhci->max_pstreams_mask = 0;
3360 }
3361
3362 usb_xhci_init(xhci);
3363 xhci->mfwrap_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_mfwrap_timer, xhci);
3364
3365 memory_region_init(&xhci->mem, OBJECT(dev), "xhci", XHCI_LEN_REGS);
3366 memory_region_init_io(&xhci->mem_cap, OBJECT(dev), &xhci_cap_ops, xhci,
3367 "capabilities", LEN_CAP);
3368 memory_region_init_io(&xhci->mem_oper, OBJECT(dev), &xhci_oper_ops, xhci,
3369 "operational", 0x400);
3370 memory_region_init_io(&xhci->mem_runtime, OBJECT(dev), &xhci_runtime_ops,
3371 xhci, "runtime", LEN_RUNTIME);
3372 memory_region_init_io(&xhci->mem_doorbell, OBJECT(dev), &xhci_doorbell_ops,
3373 xhci, "doorbell", LEN_DOORBELL);
3374
3375 memory_region_add_subregion(&xhci->mem, 0, &xhci->mem_cap);
3376 memory_region_add_subregion(&xhci->mem, OFF_OPER, &xhci->mem_oper);
3377 memory_region_add_subregion(&xhci->mem, OFF_RUNTIME, &xhci->mem_runtime);
3378 memory_region_add_subregion(&xhci->mem, OFF_DOORBELL, &xhci->mem_doorbell);
3379
3380 for (i = 0; i < xhci->numports; i++) {
3381 XHCIPort *port = &xhci->ports[i];
3382 uint32_t offset = OFF_OPER + 0x400 + 0x10 * i;
3383 port->xhci = xhci;
3384 memory_region_init_io(&port->mem, OBJECT(dev), &xhci_port_ops, port,
3385 port->name, 0x10);
3386 memory_region_add_subregion(&xhci->mem, offset, &port->mem);
3387 }
3388 }
3389
3390 static void usb_xhci_unrealize(DeviceState *dev)
3391 {
3392 int i;
3393 XHCIState *xhci = XHCI(dev);
3394
3395 trace_usb_xhci_exit();
3396
3397 for (i = 0; i < xhci->numslots; i++) {
3398 xhci_disable_slot(xhci, i + 1);
3399 }
3400
3401 if (xhci->mfwrap_timer) {
3402 timer_free(xhci->mfwrap_timer);
3403 xhci->mfwrap_timer = NULL;
3404 }
3405
3406 memory_region_del_subregion(&xhci->mem, &xhci->mem_cap);
3407 memory_region_del_subregion(&xhci->mem, &xhci->mem_oper);
3408 memory_region_del_subregion(&xhci->mem, &xhci->mem_runtime);
3409 memory_region_del_subregion(&xhci->mem, &xhci->mem_doorbell);
3410
3411 for (i = 0; i < xhci->numports; i++) {
3412 XHCIPort *port = &xhci->ports[i];
3413 memory_region_del_subregion(&xhci->mem, &port->mem);
3414 }
3415
3416 usb_bus_release(&xhci->bus);
3417 }
3418
3419 static int usb_xhci_post_load(void *opaque, int version_id)
3420 {
3421 XHCIState *xhci = opaque;
3422 XHCISlot *slot;
3423 XHCIEPContext *epctx;
3424 dma_addr_t dcbaap, pctx;
3425 uint32_t slot_ctx[4];
3426 uint32_t ep_ctx[5];
3427 int slotid, epid, state;
3428
3429 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
3430
3431 for (slotid = 1; slotid <= xhci->numslots; slotid++) {
3432 slot = &xhci->slots[slotid-1];
3433 if (!slot->addressed) {
3434 continue;
3435 }
3436 slot->ctx =
3437 xhci_mask64(ldq_le_dma(xhci->as, dcbaap + 8 * slotid));
3438 xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx));
3439 slot->uport = xhci_lookup_uport(xhci, slot_ctx);
3440 if (!slot->uport) {
3441 /* should not happen, but may trigger on guest bugs */
3442 slot->enabled = 0;
3443 slot->addressed = 0;
3444 continue;
3445 }
3446 assert(slot->uport && slot->uport->dev);
3447
3448 for (epid = 1; epid <= 31; epid++) {
3449 pctx = slot->ctx + 32 * epid;
3450 xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx));
3451 state = ep_ctx[0] & EP_STATE_MASK;
3452 if (state == EP_DISABLED) {
3453 continue;
3454 }
3455 epctx = xhci_alloc_epctx(xhci, slotid, epid);
3456 slot->eps[epid-1] = epctx;
3457 xhci_init_epctx(epctx, pctx, ep_ctx);
3458 epctx->state = state;
3459 if (state == EP_RUNNING) {
3460 /* kick endpoint after vmload is finished */
3461 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
3462 }
3463 }
3464 }
3465 return 0;
3466 }
3467
3468 static const VMStateDescription vmstate_xhci_ring = {
3469 .name = "xhci-ring",
3470 .version_id = 1,
3471 .fields = (VMStateField[]) {
3472 VMSTATE_UINT64(dequeue, XHCIRing),
3473 VMSTATE_BOOL(ccs, XHCIRing),
3474 VMSTATE_END_OF_LIST()
3475 }
3476 };
3477
3478 static const VMStateDescription vmstate_xhci_port = {
3479 .name = "xhci-port",
3480 .version_id = 1,
3481 .fields = (VMStateField[]) {
3482 VMSTATE_UINT32(portsc, XHCIPort),
3483 VMSTATE_END_OF_LIST()
3484 }
3485 };
3486
3487 static const VMStateDescription vmstate_xhci_slot = {
3488 .name = "xhci-slot",
3489 .version_id = 1,
3490 .fields = (VMStateField[]) {
3491 VMSTATE_BOOL(enabled, XHCISlot),
3492 VMSTATE_BOOL(addressed, XHCISlot),
3493 VMSTATE_END_OF_LIST()
3494 }
3495 };
3496
3497 static const VMStateDescription vmstate_xhci_event = {
3498 .name = "xhci-event",
3499 .version_id = 1,
3500 .fields = (VMStateField[]) {
3501 VMSTATE_UINT32(type, XHCIEvent),
3502 VMSTATE_UINT32(ccode, XHCIEvent),
3503 VMSTATE_UINT64(ptr, XHCIEvent),
3504 VMSTATE_UINT32(length, XHCIEvent),
3505 VMSTATE_UINT32(flags, XHCIEvent),
3506 VMSTATE_UINT8(slotid, XHCIEvent),
3507 VMSTATE_UINT8(epid, XHCIEvent),
3508 VMSTATE_END_OF_LIST()
3509 }
3510 };
3511
3512 static bool xhci_er_full(void *opaque, int version_id)
3513 {
3514 return false;
3515 }
3516
3517 static const VMStateDescription vmstate_xhci_intr = {
3518 .name = "xhci-intr",
3519 .version_id = 1,
3520 .fields = (VMStateField[]) {
3521 /* registers */
3522 VMSTATE_UINT32(iman, XHCIInterrupter),
3523 VMSTATE_UINT32(imod, XHCIInterrupter),
3524 VMSTATE_UINT32(erstsz, XHCIInterrupter),
3525 VMSTATE_UINT32(erstba_low, XHCIInterrupter),
3526 VMSTATE_UINT32(erstba_high, XHCIInterrupter),
3527 VMSTATE_UINT32(erdp_low, XHCIInterrupter),
3528 VMSTATE_UINT32(erdp_high, XHCIInterrupter),
3529
3530 /* state */
3531 VMSTATE_BOOL(msix_used, XHCIInterrupter),
3532 VMSTATE_BOOL(er_pcs, XHCIInterrupter),
3533 VMSTATE_UINT64(er_start, XHCIInterrupter),
3534 VMSTATE_UINT32(er_size, XHCIInterrupter),
3535 VMSTATE_UINT32(er_ep_idx, XHCIInterrupter),
3536
3537 /* event queue (used if ring is full) */
3538 VMSTATE_BOOL(er_full_unused, XHCIInterrupter),
3539 VMSTATE_UINT32_TEST(ev_buffer_put, XHCIInterrupter, xhci_er_full),
3540 VMSTATE_UINT32_TEST(ev_buffer_get, XHCIInterrupter, xhci_er_full),
3541 VMSTATE_STRUCT_ARRAY_TEST(ev_buffer, XHCIInterrupter, EV_QUEUE,
3542 xhci_er_full, 1,
3543 vmstate_xhci_event, XHCIEvent),
3544
3545 VMSTATE_END_OF_LIST()
3546 }
3547 };
3548
3549 const VMStateDescription vmstate_xhci = {
3550 .name = "xhci-core",
3551 .version_id = 1,
3552 .post_load = usb_xhci_post_load,
3553 .fields = (VMStateField[]) {
3554 VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1,
3555 vmstate_xhci_port, XHCIPort),
3556 VMSTATE_STRUCT_VARRAY_UINT32(slots, XHCIState, numslots, 1,
3557 vmstate_xhci_slot, XHCISlot),
3558 VMSTATE_STRUCT_VARRAY_UINT32(intr, XHCIState, numintrs, 1,
3559 vmstate_xhci_intr, XHCIInterrupter),
3560
3561 /* Operational Registers */
3562 VMSTATE_UINT32(usbcmd, XHCIState),
3563 VMSTATE_UINT32(usbsts, XHCIState),
3564 VMSTATE_UINT32(dnctrl, XHCIState),
3565 VMSTATE_UINT32(crcr_low, XHCIState),
3566 VMSTATE_UINT32(crcr_high, XHCIState),
3567 VMSTATE_UINT32(dcbaap_low, XHCIState),
3568 VMSTATE_UINT32(dcbaap_high, XHCIState),
3569 VMSTATE_UINT32(config, XHCIState),
3570
3571 /* Runtime Registers & state */
3572 VMSTATE_INT64(mfindex_start, XHCIState),
3573 VMSTATE_TIMER_PTR(mfwrap_timer, XHCIState),
3574 VMSTATE_STRUCT(cmd_ring, XHCIState, 1, vmstate_xhci_ring, XHCIRing),
3575
3576 VMSTATE_END_OF_LIST()
3577 }
3578 };
3579
3580 static Property xhci_properties[] = {
3581 DEFINE_PROP_BIT("streams", XHCIState, flags,
3582 XHCI_FLAG_ENABLE_STREAMS, true),
3583 DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4),
3584 DEFINE_PROP_UINT32("p3", XHCIState, numports_3, 4),
3585 DEFINE_PROP_LINK("host", XHCIState, hostOpaque, TYPE_DEVICE,
3586 DeviceState *),
3587 DEFINE_PROP_END_OF_LIST(),
3588 };
3589
3590 static void xhci_class_init(ObjectClass *klass, void *data)
3591 {
3592 DeviceClass *dc = DEVICE_CLASS(klass);
3593
3594 dc->realize = usb_xhci_realize;
3595 dc->unrealize = usb_xhci_unrealize;
3596 dc->reset = xhci_reset;
3597 device_class_set_props(dc, xhci_properties);
3598 dc->user_creatable = false;
3599 }
3600
3601 static const TypeInfo xhci_info = {
3602 .name = TYPE_XHCI,
3603 .parent = TYPE_DEVICE,
3604 .instance_size = sizeof(XHCIState),
3605 .class_init = xhci_class_init,
3606 };
3607
3608 static void xhci_register_types(void)
3609 {
3610 type_register_static(&xhci_info);
3611 }
3612
3613 type_init(xhci_register_types)
Random patches