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virtio-bus: have callers tolerate new host notifier api
[qemu.git] / hw / usb / hcd-xhci.c
blob43ba61599ac48e31e0e0db061160a597bc719536
1 /*
2 * USB xHCI controller emulation
3 *
4 * Copyright (c) 2011 Securiforest
5 * Date: 2011-05-11 ; Author: Hector Martin <hector@marcansoft.com>
6 * Based on usb-ohci.c, emulates Renesas NEC USB 3.0
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 */
21 #include "qemu/osdep.h"
22 #include "hw/hw.h"
23 #include "qemu/timer.h"
24 #include "hw/usb.h"
25 #include "hw/pci/pci.h"
26 #include "hw/pci/msi.h"
27 #include "hw/pci/msix.h"
28 #include "trace.h"
29
30 //#define DEBUG_XHCI
31 //#define DEBUG_DATA
32
33 #ifdef DEBUG_XHCI
34 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
35 #else
36 #define DPRINTF(...) do {} while (0)
37 #endif
38 #define FIXME(_msg) do { fprintf(stderr, "FIXME %s:%d %s\n", \
39 __func__, __LINE__, _msg); abort(); } while (0)
40
41 #define MAXPORTS_2 15
42 #define MAXPORTS_3 15
43
44 #define MAXPORTS (MAXPORTS_2+MAXPORTS_3)
45 #define MAXSLOTS 64
46 #define MAXINTRS 16
47
48 #define TD_QUEUE 24
49
50 /* Very pessimistic, let's hope it's enough for all cases */
51 #define EV_QUEUE (((3*TD_QUEUE)+16)*MAXSLOTS)
52 /* Do not deliver ER Full events. NEC's driver does some things not bound
53 * to the specs when it gets them */
54 #define ER_FULL_HACK
55
56 #define LEN_CAP 0x40
57 #define LEN_OPER (0x400 + 0x10 * MAXPORTS)
58 #define LEN_RUNTIME ((MAXINTRS + 1) * 0x20)
59 #define LEN_DOORBELL ((MAXSLOTS + 1) * 0x20)
60
61 #define OFF_OPER LEN_CAP
62 #define OFF_RUNTIME 0x1000
63 #define OFF_DOORBELL 0x2000
64 #define OFF_MSIX_TABLE 0x3000
65 #define OFF_MSIX_PBA 0x3800
66 /* must be power of 2 */
67 #define LEN_REGS 0x4000
68
69 #if (OFF_OPER + LEN_OPER) > OFF_RUNTIME
70 #error Increase OFF_RUNTIME
71 #endif
72 #if (OFF_RUNTIME + LEN_RUNTIME) > OFF_DOORBELL
73 #error Increase OFF_DOORBELL
74 #endif
75 #if (OFF_DOORBELL + LEN_DOORBELL) > LEN_REGS
76 # error Increase LEN_REGS
77 #endif
78
79 /* bit definitions */
80 #define USBCMD_RS (1<<0)
81 #define USBCMD_HCRST (1<<1)
82 #define USBCMD_INTE (1<<2)
83 #define USBCMD_HSEE (1<<3)
84 #define USBCMD_LHCRST (1<<7)
85 #define USBCMD_CSS (1<<8)
86 #define USBCMD_CRS (1<<9)
87 #define USBCMD_EWE (1<<10)
88 #define USBCMD_EU3S (1<<11)
89
90 #define USBSTS_HCH (1<<0)
91 #define USBSTS_HSE (1<<2)
92 #define USBSTS_EINT (1<<3)
93 #define USBSTS_PCD (1<<4)
94 #define USBSTS_SSS (1<<8)
95 #define USBSTS_RSS (1<<9)
96 #define USBSTS_SRE (1<<10)
97 #define USBSTS_CNR (1<<11)
98 #define USBSTS_HCE (1<<12)
99
100
101 #define PORTSC_CCS (1<<0)
102 #define PORTSC_PED (1<<1)
103 #define PORTSC_OCA (1<<3)
104 #define PORTSC_PR (1<<4)
105 #define PORTSC_PLS_SHIFT 5
106 #define PORTSC_PLS_MASK 0xf
107 #define PORTSC_PP (1<<9)
108 #define PORTSC_SPEED_SHIFT 10
109 #define PORTSC_SPEED_MASK 0xf
110 #define PORTSC_SPEED_FULL (1<<10)
111 #define PORTSC_SPEED_LOW (2<<10)
112 #define PORTSC_SPEED_HIGH (3<<10)
113 #define PORTSC_SPEED_SUPER (4<<10)
114 #define PORTSC_PIC_SHIFT 14
115 #define PORTSC_PIC_MASK 0x3
116 #define PORTSC_LWS (1<<16)
117 #define PORTSC_CSC (1<<17)
118 #define PORTSC_PEC (1<<18)
119 #define PORTSC_WRC (1<<19)
120 #define PORTSC_OCC (1<<20)
121 #define PORTSC_PRC (1<<21)
122 #define PORTSC_PLC (1<<22)
123 #define PORTSC_CEC (1<<23)
124 #define PORTSC_CAS (1<<24)
125 #define PORTSC_WCE (1<<25)
126 #define PORTSC_WDE (1<<26)
127 #define PORTSC_WOE (1<<27)
128 #define PORTSC_DR (1<<30)
129 #define PORTSC_WPR (1<<31)
130
131 #define CRCR_RCS (1<<0)
132 #define CRCR_CS (1<<1)
133 #define CRCR_CA (1<<2)
134 #define CRCR_CRR (1<<3)
135
136 #define IMAN_IP (1<<0)
137 #define IMAN_IE (1<<1)
138
139 #define ERDP_EHB (1<<3)
140
141 #define TRB_SIZE 16
142 typedef struct XHCITRB {
143 uint64_t parameter;
144 uint32_t status;
145 uint32_t control;
146 dma_addr_t addr;
147 bool ccs;
148 } XHCITRB;
149
150 enum {
151 PLS_U0 = 0,
152 PLS_U1 = 1,
153 PLS_U2 = 2,
154 PLS_U3 = 3,
155 PLS_DISABLED = 4,
156 PLS_RX_DETECT = 5,
157 PLS_INACTIVE = 6,
158 PLS_POLLING = 7,
159 PLS_RECOVERY = 8,
160 PLS_HOT_RESET = 9,
161 PLS_COMPILANCE_MODE = 10,
162 PLS_TEST_MODE = 11,
163 PLS_RESUME = 15,
164 };
165
166 typedef enum TRBType {
167 TRB_RESERVED = 0,
168 TR_NORMAL,
169 TR_SETUP,
170 TR_DATA,
171 TR_STATUS,
172 TR_ISOCH,
173 TR_LINK,
174 TR_EVDATA,
175 TR_NOOP,
176 CR_ENABLE_SLOT,
177 CR_DISABLE_SLOT,
178 CR_ADDRESS_DEVICE,
179 CR_CONFIGURE_ENDPOINT,
180 CR_EVALUATE_CONTEXT,
181 CR_RESET_ENDPOINT,
182 CR_STOP_ENDPOINT,
183 CR_SET_TR_DEQUEUE,
184 CR_RESET_DEVICE,
185 CR_FORCE_EVENT,
186 CR_NEGOTIATE_BW,
187 CR_SET_LATENCY_TOLERANCE,
188 CR_GET_PORT_BANDWIDTH,
189 CR_FORCE_HEADER,
190 CR_NOOP,
191 ER_TRANSFER = 32,
192 ER_COMMAND_COMPLETE,
193 ER_PORT_STATUS_CHANGE,
194 ER_BANDWIDTH_REQUEST,
195 ER_DOORBELL,
196 ER_HOST_CONTROLLER,
197 ER_DEVICE_NOTIFICATION,
198 ER_MFINDEX_WRAP,
199 /* vendor specific bits */
200 CR_VENDOR_VIA_CHALLENGE_RESPONSE = 48,
201 CR_VENDOR_NEC_FIRMWARE_REVISION = 49,
202 CR_VENDOR_NEC_CHALLENGE_RESPONSE = 50,
203 } TRBType;
204
205 #define CR_LINK TR_LINK
206
207 typedef enum TRBCCode {
208 CC_INVALID = 0,
209 CC_SUCCESS,
210 CC_DATA_BUFFER_ERROR,
211 CC_BABBLE_DETECTED,
212 CC_USB_TRANSACTION_ERROR,
213 CC_TRB_ERROR,
214 CC_STALL_ERROR,
215 CC_RESOURCE_ERROR,
216 CC_BANDWIDTH_ERROR,
217 CC_NO_SLOTS_ERROR,
218 CC_INVALID_STREAM_TYPE_ERROR,
219 CC_SLOT_NOT_ENABLED_ERROR,
220 CC_EP_NOT_ENABLED_ERROR,
221 CC_SHORT_PACKET,
222 CC_RING_UNDERRUN,
223 CC_RING_OVERRUN,
224 CC_VF_ER_FULL,
225 CC_PARAMETER_ERROR,
226 CC_BANDWIDTH_OVERRUN,
227 CC_CONTEXT_STATE_ERROR,
228 CC_NO_PING_RESPONSE_ERROR,
229 CC_EVENT_RING_FULL_ERROR,
230 CC_INCOMPATIBLE_DEVICE_ERROR,
231 CC_MISSED_SERVICE_ERROR,
232 CC_COMMAND_RING_STOPPED,
233 CC_COMMAND_ABORTED,
234 CC_STOPPED,
235 CC_STOPPED_LENGTH_INVALID,
236 CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR = 29,
237 CC_ISOCH_BUFFER_OVERRUN = 31,
238 CC_EVENT_LOST_ERROR,
239 CC_UNDEFINED_ERROR,
240 CC_INVALID_STREAM_ID_ERROR,
241 CC_SECONDARY_BANDWIDTH_ERROR,
242 CC_SPLIT_TRANSACTION_ERROR
243 } TRBCCode;
244
245 #define TRB_C (1<<0)
246 #define TRB_TYPE_SHIFT 10
247 #define TRB_TYPE_MASK 0x3f
248 #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK)
249
250 #define TRB_EV_ED (1<<2)
251
252 #define TRB_TR_ENT (1<<1)
253 #define TRB_TR_ISP (1<<2)
254 #define TRB_TR_NS (1<<3)
255 #define TRB_TR_CH (1<<4)
256 #define TRB_TR_IOC (1<<5)
257 #define TRB_TR_IDT (1<<6)
258 #define TRB_TR_TBC_SHIFT 7
259 #define TRB_TR_TBC_MASK 0x3
260 #define TRB_TR_BEI (1<<9)
261 #define TRB_TR_TLBPC_SHIFT 16
262 #define TRB_TR_TLBPC_MASK 0xf
263 #define TRB_TR_FRAMEID_SHIFT 20
264 #define TRB_TR_FRAMEID_MASK 0x7ff
265 #define TRB_TR_SIA (1<<31)
266
267 #define TRB_TR_DIR (1<<16)
268
269 #define TRB_CR_SLOTID_SHIFT 24
270 #define TRB_CR_SLOTID_MASK 0xff
271 #define TRB_CR_EPID_SHIFT 16
272 #define TRB_CR_EPID_MASK 0x1f
273
274 #define TRB_CR_BSR (1<<9)
275 #define TRB_CR_DC (1<<9)
276
277 #define TRB_LK_TC (1<<1)
278
279 #define TRB_INTR_SHIFT 22
280 #define TRB_INTR_MASK 0x3ff
281 #define TRB_INTR(t) (((t).status >> TRB_INTR_SHIFT) & TRB_INTR_MASK)
282
283 #define EP_TYPE_MASK 0x7
284 #define EP_TYPE_SHIFT 3
285
286 #define EP_STATE_MASK 0x7
287 #define EP_DISABLED (0<<0)
288 #define EP_RUNNING (1<<0)
289 #define EP_HALTED (2<<0)
290 #define EP_STOPPED (3<<0)
291 #define EP_ERROR (4<<0)
292
293 #define SLOT_STATE_MASK 0x1f
294 #define SLOT_STATE_SHIFT 27
295 #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK)
296 #define SLOT_ENABLED 0
297 #define SLOT_DEFAULT 1
298 #define SLOT_ADDRESSED 2
299 #define SLOT_CONFIGURED 3
300
301 #define SLOT_CONTEXT_ENTRIES_MASK 0x1f
302 #define SLOT_CONTEXT_ENTRIES_SHIFT 27
303
304 typedef struct XHCIState XHCIState;
305 typedef struct XHCIStreamContext XHCIStreamContext;
306 typedef struct XHCIEPContext XHCIEPContext;
307
308 #define get_field(data, field) \
309 (((data) >> field##_SHIFT) & field##_MASK)
310
311 #define set_field(data, newval, field) do { \
312 uint32_t val = *data; \
313 val &= ~(field##_MASK << field##_SHIFT); \
314 val |= ((newval) & field##_MASK) << field##_SHIFT; \
315 *data = val; \
316 } while (0)
317
318 typedef enum EPType {
319 ET_INVALID = 0,
320 ET_ISO_OUT,
321 ET_BULK_OUT,
322 ET_INTR_OUT,
323 ET_CONTROL,
324 ET_ISO_IN,
325 ET_BULK_IN,
326 ET_INTR_IN,
327 } EPType;
328
329 typedef struct XHCIRing {
330 dma_addr_t dequeue;
331 bool ccs;
332 } XHCIRing;
333
334 typedef struct XHCIPort {
335 XHCIState *xhci;
336 uint32_t portsc;
337 uint32_t portnr;
338 USBPort *uport;
339 uint32_t speedmask;
340 char name[16];
341 MemoryRegion mem;
342 } XHCIPort;
343
344 typedef struct XHCITransfer {
345 XHCIState *xhci;
346 USBPacket packet;
347 QEMUSGList sgl;
348 bool running_async;
349 bool running_retry;
350 bool complete;
351 bool int_req;
352 unsigned int iso_pkts;
353 unsigned int slotid;
354 unsigned int epid;
355 unsigned int streamid;
356 bool in_xfer;
357 bool iso_xfer;
358 bool timed_xfer;
359
360 unsigned int trb_count;
361 unsigned int trb_alloced;
362 XHCITRB *trbs;
363
364 TRBCCode status;
365
366 unsigned int pkts;
367 unsigned int pktsize;
368 unsigned int cur_pkt;
369
370 uint64_t mfindex_kick;
371 } XHCITransfer;
372
373 struct XHCIStreamContext {
374 dma_addr_t pctx;
375 unsigned int sct;
376 XHCIRing ring;
377 };
378
379 struct XHCIEPContext {
380 XHCIState *xhci;
381 unsigned int slotid;
382 unsigned int epid;
383
384 XHCIRing ring;
385 unsigned int next_xfer;
386 unsigned int comp_xfer;
387 XHCITransfer transfers[TD_QUEUE];
388 XHCITransfer *retry;
389 EPType type;
390 dma_addr_t pctx;
391 unsigned int max_psize;
392 uint32_t state;
393
394 /* streams */
395 unsigned int max_pstreams;
396 bool lsa;
397 unsigned int nr_pstreams;
398 XHCIStreamContext *pstreams;
399
400 /* iso xfer scheduling */
401 unsigned int interval;
402 int64_t mfindex_last;
403 QEMUTimer *kick_timer;
404 };
405
406 typedef struct XHCISlot {
407 bool enabled;
408 bool addressed;
409 dma_addr_t ctx;
410 USBPort *uport;
411 XHCIEPContext * eps[31];
412 } XHCISlot;
413
414 typedef struct XHCIEvent {
415 TRBType type;
416 TRBCCode ccode;
417 uint64_t ptr;
418 uint32_t length;
419 uint32_t flags;
420 uint8_t slotid;
421 uint8_t epid;
422 } XHCIEvent;
423
424 typedef struct XHCIInterrupter {
425 uint32_t iman;
426 uint32_t imod;
427 uint32_t erstsz;
428 uint32_t erstba_low;
429 uint32_t erstba_high;
430 uint32_t erdp_low;
431 uint32_t erdp_high;
432
433 bool msix_used, er_pcs, er_full;
434
435 dma_addr_t er_start;
436 uint32_t er_size;
437 unsigned int er_ep_idx;
438
439 XHCIEvent ev_buffer[EV_QUEUE];
440 unsigned int ev_buffer_put;
441 unsigned int ev_buffer_get;
442
443 } XHCIInterrupter;
444
445 struct XHCIState {
446 /*< private >*/
447 PCIDevice parent_obj;
448 /*< public >*/
449
450 USBBus bus;
451 MemoryRegion mem;
452 MemoryRegion mem_cap;
453 MemoryRegion mem_oper;
454 MemoryRegion mem_runtime;
455 MemoryRegion mem_doorbell;
456
457 /* properties */
458 uint32_t numports_2;
459 uint32_t numports_3;
460 uint32_t numintrs;
461 uint32_t numslots;
462 uint32_t flags;
463 uint32_t max_pstreams_mask;
464
465 /* Operational Registers */
466 uint32_t usbcmd;
467 uint32_t usbsts;
468 uint32_t dnctrl;
469 uint32_t crcr_low;
470 uint32_t crcr_high;
471 uint32_t dcbaap_low;
472 uint32_t dcbaap_high;
473 uint32_t config;
474
475 USBPort uports[MAX(MAXPORTS_2, MAXPORTS_3)];
476 XHCIPort ports[MAXPORTS];
477 XHCISlot slots[MAXSLOTS];
478 uint32_t numports;
479
480 /* Runtime Registers */
481 int64_t mfindex_start;
482 QEMUTimer *mfwrap_timer;
483 XHCIInterrupter intr[MAXINTRS];
484
485 XHCIRing cmd_ring;
486 };
487
488 #define TYPE_XHCI "nec-usb-xhci"
489
490 #define XHCI(obj) \
491 OBJECT_CHECK(XHCIState, (obj), TYPE_XHCI)
492
493 typedef struct XHCIEvRingSeg {
494 uint32_t addr_low;
495 uint32_t addr_high;
496 uint32_t size;
497 uint32_t rsvd;
498 } XHCIEvRingSeg;
499
500 enum xhci_flags {
501 XHCI_FLAG_USE_MSI = 1,
502 XHCI_FLAG_USE_MSI_X,
503 XHCI_FLAG_SS_FIRST,
504 XHCI_FLAG_FORCE_PCIE_ENDCAP,
505 XHCI_FLAG_ENABLE_STREAMS,
506 };
507
508 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
509 unsigned int epid, unsigned int streamid);
510 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
511 unsigned int epid);
512 static void xhci_xfer_report(XHCITransfer *xfer);
513 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v);
514 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v);
515 static USBEndpoint *xhci_epid_to_usbep(XHCIState *xhci,
516 unsigned int slotid, unsigned int epid);
517
518 static const char *TRBType_names[] = {
519 [TRB_RESERVED] = "TRB_RESERVED",
520 [TR_NORMAL] = "TR_NORMAL",
521 [TR_SETUP] = "TR_SETUP",
522 [TR_DATA] = "TR_DATA",
523 [TR_STATUS] = "TR_STATUS",
524 [TR_ISOCH] = "TR_ISOCH",
525 [TR_LINK] = "TR_LINK",
526 [TR_EVDATA] = "TR_EVDATA",
527 [TR_NOOP] = "TR_NOOP",
528 [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT",
529 [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT",
530 [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE",
531 [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT",
532 [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT",
533 [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT",
534 [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT",
535 [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE",
536 [CR_RESET_DEVICE] = "CR_RESET_DEVICE",
537 [CR_FORCE_EVENT] = "CR_FORCE_EVENT",
538 [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW",
539 [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE",
540 [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH",
541 [CR_FORCE_HEADER] = "CR_FORCE_HEADER",
542 [CR_NOOP] = "CR_NOOP",
543 [ER_TRANSFER] = "ER_TRANSFER",
544 [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE",
545 [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE",
546 [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST",
547 [ER_DOORBELL] = "ER_DOORBELL",
548 [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER",
549 [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION",
550 [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP",
551 [CR_VENDOR_VIA_CHALLENGE_RESPONSE] = "CR_VENDOR_VIA_CHALLENGE_RESPONSE",
552 [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION",
553 [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE",
554 };
555
556 static const char *TRBCCode_names[] = {
557 [CC_INVALID] = "CC_INVALID",
558 [CC_SUCCESS] = "CC_SUCCESS",
559 [CC_DATA_BUFFER_ERROR] = "CC_DATA_BUFFER_ERROR",
560 [CC_BABBLE_DETECTED] = "CC_BABBLE_DETECTED",
561 [CC_USB_TRANSACTION_ERROR] = "CC_USB_TRANSACTION_ERROR",
562 [CC_TRB_ERROR] = "CC_TRB_ERROR",
563 [CC_STALL_ERROR] = "CC_STALL_ERROR",
564 [CC_RESOURCE_ERROR] = "CC_RESOURCE_ERROR",
565 [CC_BANDWIDTH_ERROR] = "CC_BANDWIDTH_ERROR",
566 [CC_NO_SLOTS_ERROR] = "CC_NO_SLOTS_ERROR",
567 [CC_INVALID_STREAM_TYPE_ERROR] = "CC_INVALID_STREAM_TYPE_ERROR",
568 [CC_SLOT_NOT_ENABLED_ERROR] = "CC_SLOT_NOT_ENABLED_ERROR",
569 [CC_EP_NOT_ENABLED_ERROR] = "CC_EP_NOT_ENABLED_ERROR",
570 [CC_SHORT_PACKET] = "CC_SHORT_PACKET",
571 [CC_RING_UNDERRUN] = "CC_RING_UNDERRUN",
572 [CC_RING_OVERRUN] = "CC_RING_OVERRUN",
573 [CC_VF_ER_FULL] = "CC_VF_ER_FULL",
574 [CC_PARAMETER_ERROR] = "CC_PARAMETER_ERROR",
575 [CC_BANDWIDTH_OVERRUN] = "CC_BANDWIDTH_OVERRUN",
576 [CC_CONTEXT_STATE_ERROR] = "CC_CONTEXT_STATE_ERROR",
577 [CC_NO_PING_RESPONSE_ERROR] = "CC_NO_PING_RESPONSE_ERROR",
578 [CC_EVENT_RING_FULL_ERROR] = "CC_EVENT_RING_FULL_ERROR",
579 [CC_INCOMPATIBLE_DEVICE_ERROR] = "CC_INCOMPATIBLE_DEVICE_ERROR",
580 [CC_MISSED_SERVICE_ERROR] = "CC_MISSED_SERVICE_ERROR",
581 [CC_COMMAND_RING_STOPPED] = "CC_COMMAND_RING_STOPPED",
582 [CC_COMMAND_ABORTED] = "CC_COMMAND_ABORTED",
583 [CC_STOPPED] = "CC_STOPPED",
584 [CC_STOPPED_LENGTH_INVALID] = "CC_STOPPED_LENGTH_INVALID",
585 [CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR]
586 = "CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR",
587 [CC_ISOCH_BUFFER_OVERRUN] = "CC_ISOCH_BUFFER_OVERRUN",
588 [CC_EVENT_LOST_ERROR] = "CC_EVENT_LOST_ERROR",
589 [CC_UNDEFINED_ERROR] = "CC_UNDEFINED_ERROR",
590 [CC_INVALID_STREAM_ID_ERROR] = "CC_INVALID_STREAM_ID_ERROR",
591 [CC_SECONDARY_BANDWIDTH_ERROR] = "CC_SECONDARY_BANDWIDTH_ERROR",
592 [CC_SPLIT_TRANSACTION_ERROR] = "CC_SPLIT_TRANSACTION_ERROR",
593 };
594
595 static const char *ep_state_names[] = {
596 [EP_DISABLED] = "disabled",
597 [EP_RUNNING] = "running",
598 [EP_HALTED] = "halted",
599 [EP_STOPPED] = "stopped",
600 [EP_ERROR] = "error",
601 };
602
603 static const char *lookup_name(uint32_t index, const char **list, uint32_t llen)
604 {
605 if (index >= llen || list[index] == NULL) {
606 return "???";
607 }
608 return list[index];
609 }
610
611 static const char *trb_name(XHCITRB *trb)
612 {
613 return lookup_name(TRB_TYPE(*trb), TRBType_names,
614 ARRAY_SIZE(TRBType_names));
615 }
616
617 static const char *event_name(XHCIEvent *event)
618 {
619 return lookup_name(event->ccode, TRBCCode_names,
620 ARRAY_SIZE(TRBCCode_names));
621 }
622
623 static const char *ep_state_name(uint32_t state)
624 {
625 return lookup_name(state, ep_state_names,
626 ARRAY_SIZE(ep_state_names));
627 }
628
629 static bool xhci_get_flag(XHCIState *xhci, enum xhci_flags bit)
630 {
631 return xhci->flags & (1 << bit);
632 }
633
634 static uint64_t xhci_mfindex_get(XHCIState *xhci)
635 {
636 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
637 return (now - xhci->mfindex_start) / 125000;
638 }
639
640 static void xhci_mfwrap_update(XHCIState *xhci)
641 {
642 const uint32_t bits = USBCMD_RS | USBCMD_EWE;
643 uint32_t mfindex, left;
644 int64_t now;
645
646 if ((xhci->usbcmd & bits) == bits) {
647 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
648 mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff;
649 left = 0x4000 - mfindex;
650 timer_mod(xhci->mfwrap_timer, now + left * 125000);
651 } else {
652 timer_del(xhci->mfwrap_timer);
653 }
654 }
655
656 static void xhci_mfwrap_timer(void *opaque)
657 {
658 XHCIState *xhci = opaque;
659 XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS };
660
661 xhci_event(xhci, &wrap, 0);
662 xhci_mfwrap_update(xhci);
663 }
664
665 static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
666 {
667 if (sizeof(dma_addr_t) == 4) {
668 return low;
669 } else {
670 return low | (((dma_addr_t)high << 16) << 16);
671 }
672 }
673
674 static inline dma_addr_t xhci_mask64(uint64_t addr)
675 {
676 if (sizeof(dma_addr_t) == 4) {
677 return addr & 0xffffffff;
678 } else {
679 return addr;
680 }
681 }
682
683 static inline void xhci_dma_read_u32s(XHCIState *xhci, dma_addr_t addr,
684 uint32_t *buf, size_t len)
685 {
686 int i;
687
688 assert((len % sizeof(uint32_t)) == 0);
689
690 pci_dma_read(PCI_DEVICE(xhci), addr, buf, len);
691
692 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
693 buf[i] = le32_to_cpu(buf[i]);
694 }
695 }
696
697 static inline void xhci_dma_write_u32s(XHCIState *xhci, dma_addr_t addr,
698 uint32_t *buf, size_t len)
699 {
700 int i;
701 uint32_t tmp[5];
702 uint32_t n = len / sizeof(uint32_t);
703
704 assert((len % sizeof(uint32_t)) == 0);
705 assert(n <= ARRAY_SIZE(tmp));
706
707 for (i = 0; i < n; i++) {
708 tmp[i] = cpu_to_le32(buf[i]);
709 }
710 pci_dma_write(PCI_DEVICE(xhci), addr, tmp, len);
711 }
712
713 static XHCIPort *xhci_lookup_port(XHCIState *xhci, struct USBPort *uport)
714 {
715 int index;
716
717 if (!uport->dev) {
718 return NULL;
719 }
720 switch (uport->dev->speed) {
721 case USB_SPEED_LOW:
722 case USB_SPEED_FULL:
723 case USB_SPEED_HIGH:
724 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
725 index = uport->index + xhci->numports_3;
726 } else {
727 index = uport->index;
728 }
729 break;
730 case USB_SPEED_SUPER:
731 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
732 index = uport->index;
733 } else {
734 index = uport->index + xhci->numports_2;
735 }
736 break;
737 default:
738 return NULL;
739 }
740 return &xhci->ports[index];
741 }
742
743 static void xhci_intx_update(XHCIState *xhci)
744 {
745 PCIDevice *pci_dev = PCI_DEVICE(xhci);
746 int level = 0;
747
748 if (msix_enabled(pci_dev) ||
749 msi_enabled(pci_dev)) {
750 return;
751 }
752
753 if (xhci->intr[0].iman & IMAN_IP &&
754 xhci->intr[0].iman & IMAN_IE &&
755 xhci->usbcmd & USBCMD_INTE) {
756 level = 1;
757 }
758
759 trace_usb_xhci_irq_intx(level);
760 pci_set_irq(pci_dev, level);
761 }
762
763 static void xhci_msix_update(XHCIState *xhci, int v)
764 {
765 PCIDevice *pci_dev = PCI_DEVICE(xhci);
766 bool enabled;
767
768 if (!msix_enabled(pci_dev)) {
769 return;
770 }
771
772 enabled = xhci->intr[v].iman & IMAN_IE;
773 if (enabled == xhci->intr[v].msix_used) {
774 return;
775 }
776
777 if (enabled) {
778 trace_usb_xhci_irq_msix_use(v);
779 msix_vector_use(pci_dev, v);
780 xhci->intr[v].msix_used = true;
781 } else {
782 trace_usb_xhci_irq_msix_unuse(v);
783 msix_vector_unuse(pci_dev, v);
784 xhci->intr[v].msix_used = false;
785 }
786 }
787
788 static void xhci_intr_raise(XHCIState *xhci, int v)
789 {
790 PCIDevice *pci_dev = PCI_DEVICE(xhci);
791
792 xhci->intr[v].erdp_low |= ERDP_EHB;
793 xhci->intr[v].iman |= IMAN_IP;
794 xhci->usbsts |= USBSTS_EINT;
795
796 if (!(xhci->intr[v].iman & IMAN_IE)) {
797 return;
798 }
799
800 if (!(xhci->usbcmd & USBCMD_INTE)) {
801 return;
802 }
803
804 if (msix_enabled(pci_dev)) {
805 trace_usb_xhci_irq_msix(v);
806 msix_notify(pci_dev, v);
807 return;
808 }
809
810 if (msi_enabled(pci_dev)) {
811 trace_usb_xhci_irq_msi(v);
812 msi_notify(pci_dev, v);
813 return;
814 }
815
816 if (v == 0) {
817 trace_usb_xhci_irq_intx(1);
818 pci_irq_assert(pci_dev);
819 }
820 }
821
822 static inline int xhci_running(XHCIState *xhci)
823 {
824 return !(xhci->usbsts & USBSTS_HCH) && !xhci->intr[0].er_full;
825 }
826
827 static void xhci_die(XHCIState *xhci)
828 {
829 xhci->usbsts |= USBSTS_HCE;
830 DPRINTF("xhci: asserted controller error\n");
831 }
832
833 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v)
834 {
835 PCIDevice *pci_dev = PCI_DEVICE(xhci);
836 XHCIInterrupter *intr = &xhci->intr[v];
837 XHCITRB ev_trb;
838 dma_addr_t addr;
839
840 ev_trb.parameter = cpu_to_le64(event->ptr);
841 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
842 ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
843 event->flags | (event->type << TRB_TYPE_SHIFT);
844 if (intr->er_pcs) {
845 ev_trb.control |= TRB_C;
846 }
847 ev_trb.control = cpu_to_le32(ev_trb.control);
848
849 trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb),
850 event_name(event), ev_trb.parameter,
851 ev_trb.status, ev_trb.control);
852
853 addr = intr->er_start + TRB_SIZE*intr->er_ep_idx;
854 pci_dma_write(pci_dev, addr, &ev_trb, TRB_SIZE);
855
856 intr->er_ep_idx++;
857 if (intr->er_ep_idx >= intr->er_size) {
858 intr->er_ep_idx = 0;
859 intr->er_pcs = !intr->er_pcs;
860 }
861 }
862
863 static void xhci_events_update(XHCIState *xhci, int v)
864 {
865 XHCIInterrupter *intr = &xhci->intr[v];
866 dma_addr_t erdp;
867 unsigned int dp_idx;
868 bool do_irq = 0;
869
870 if (xhci->usbsts & USBSTS_HCH) {
871 return;
872 }
873
874 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
875 if (erdp < intr->er_start ||
876 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) {
877 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
878 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n",
879 v, intr->er_start, intr->er_size);
880 xhci_die(xhci);
881 return;
882 }
883 dp_idx = (erdp - intr->er_start) / TRB_SIZE;
884 assert(dp_idx < intr->er_size);
885
886 /* NEC didn't read section 4.9.4 of the spec (v1.0 p139 top Note) and thus
887 * deadlocks when the ER is full. Hack it by holding off events until
888 * the driver decides to free at least half of the ring */
889 if (intr->er_full) {
890 int er_free = dp_idx - intr->er_ep_idx;
891 if (er_free <= 0) {
892 er_free += intr->er_size;
893 }
894 if (er_free < (intr->er_size/2)) {
895 DPRINTF("xhci_events_update(): event ring still "
896 "more than half full (hack)\n");
897 return;
898 }
899 }
900
901 while (intr->ev_buffer_put != intr->ev_buffer_get) {
902 assert(intr->er_full);
903 if (((intr->er_ep_idx+1) % intr->er_size) == dp_idx) {
904 DPRINTF("xhci_events_update(): event ring full again\n");
905 #ifndef ER_FULL_HACK
906 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
907 xhci_write_event(xhci, &full, v);
908 #endif
909 do_irq = 1;
910 break;
911 }
912 XHCIEvent *event = &intr->ev_buffer[intr->ev_buffer_get];
913 xhci_write_event(xhci, event, v);
914 intr->ev_buffer_get++;
915 do_irq = 1;
916 if (intr->ev_buffer_get == EV_QUEUE) {
917 intr->ev_buffer_get = 0;
918 }
919 }
920
921 if (do_irq) {
922 xhci_intr_raise(xhci, v);
923 }
924
925 if (intr->er_full && intr->ev_buffer_put == intr->ev_buffer_get) {
926 DPRINTF("xhci_events_update(): event ring no longer full\n");
927 intr->er_full = 0;
928 }
929 }
930
931 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v)
932 {
933 XHCIInterrupter *intr;
934 dma_addr_t erdp;
935 unsigned int dp_idx;
936
937 if (v >= xhci->numintrs) {
938 DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs);
939 return;
940 }
941 intr = &xhci->intr[v];
942
943 if (intr->er_full) {
944 DPRINTF("xhci_event(): ER full, queueing\n");
945 if (((intr->ev_buffer_put+1) % EV_QUEUE) == intr->ev_buffer_get) {
946 DPRINTF("xhci: event queue full, dropping event!\n");
947 return;
948 }
949 intr->ev_buffer[intr->ev_buffer_put++] = *event;
950 if (intr->ev_buffer_put == EV_QUEUE) {
951 intr->ev_buffer_put = 0;
952 }
953 return;
954 }
955
956 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high);
957 if (erdp < intr->er_start ||
958 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) {
959 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
960 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n",
961 v, intr->er_start, intr->er_size);
962 xhci_die(xhci);
963 return;
964 }
965
966 dp_idx = (erdp - intr->er_start) / TRB_SIZE;
967 assert(dp_idx < intr->er_size);
968
969 if ((intr->er_ep_idx+1) % intr->er_size == dp_idx) {
970 DPRINTF("xhci_event(): ER full, queueing\n");
971 #ifndef ER_FULL_HACK
972 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
973 xhci_write_event(xhci, &full);
974 #endif
975 intr->er_full = 1;
976 if (((intr->ev_buffer_put+1) % EV_QUEUE) == intr->ev_buffer_get) {
977 DPRINTF("xhci: event queue full, dropping event!\n");
978 return;
979 }
980 intr->ev_buffer[intr->ev_buffer_put++] = *event;
981 if (intr->ev_buffer_put == EV_QUEUE) {
982 intr->ev_buffer_put = 0;
983 }
984 } else {
985 xhci_write_event(xhci, event, v);
986 }
987
988 xhci_intr_raise(xhci, v);
989 }
990
991 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring,
992 dma_addr_t base)
993 {
994 ring->dequeue = base;
995 ring->ccs = 1;
996 }
997
998 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
999 dma_addr_t *addr)
1000 {
1001 PCIDevice *pci_dev = PCI_DEVICE(xhci);
1002
1003 while (1) {
1004 TRBType type;
1005 pci_dma_read(pci_dev, ring->dequeue, trb, TRB_SIZE);
1006 trb->addr = ring->dequeue;
1007 trb->ccs = ring->ccs;
1008 le64_to_cpus(&trb->parameter);
1009 le32_to_cpus(&trb->status);
1010 le32_to_cpus(&trb->control);
1011
1012 trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb),
1013 trb->parameter, trb->status, trb->control);
1014
1015 if ((trb->control & TRB_C) != ring->ccs) {
1016 return 0;
1017 }
1018
1019 type = TRB_TYPE(*trb);
1020
1021 if (type != TR_LINK) {
1022 if (addr) {
1023 *addr = ring->dequeue;
1024 }
1025 ring->dequeue += TRB_SIZE;
1026 return type;
1027 } else {
1028 ring->dequeue = xhci_mask64(trb->parameter);
1029 if (trb->control & TRB_LK_TC) {
1030 ring->ccs = !ring->ccs;
1031 }
1032 }
1033 }
1034 }
1035
1036 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
1037 {
1038 PCIDevice *pci_dev = PCI_DEVICE(xhci);
1039 XHCITRB trb;
1040 int length = 0;
1041 dma_addr_t dequeue = ring->dequeue;
1042 bool ccs = ring->ccs;
1043 /* hack to bundle together the two/three TDs that make a setup transfer */
1044 bool control_td_set = 0;
1045
1046 while (1) {
1047 TRBType type;
1048 pci_dma_read(pci_dev, dequeue, &trb, TRB_SIZE);
1049 le64_to_cpus(&trb.parameter);
1050 le32_to_cpus(&trb.status);
1051 le32_to_cpus(&trb.control);
1052
1053 if ((trb.control & TRB_C) != ccs) {
1054 return -length;
1055 }
1056
1057 type = TRB_TYPE(trb);
1058
1059 if (type == TR_LINK) {
1060 dequeue = xhci_mask64(trb.parameter);
1061 if (trb.control & TRB_LK_TC) {
1062 ccs = !ccs;
1063 }
1064 continue;
1065 }
1066
1067 length += 1;
1068 dequeue += TRB_SIZE;
1069
1070 if (type == TR_SETUP) {
1071 control_td_set = 1;
1072 } else if (type == TR_STATUS) {
1073 control_td_set = 0;
1074 }
1075
1076 if (!control_td_set && !(trb.control & TRB_TR_CH)) {
1077 return length;
1078 }
1079 }
1080 }
1081
1082 static void xhci_er_reset(XHCIState *xhci, int v)
1083 {
1084 XHCIInterrupter *intr = &xhci->intr[v];
1085 XHCIEvRingSeg seg;
1086
1087 if (intr->erstsz == 0) {
1088 /* disabled */
1089 intr->er_start = 0;
1090 intr->er_size = 0;
1091 return;
1092 }
1093 /* cache the (sole) event ring segment location */
1094 if (intr->erstsz != 1) {
1095 DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz);
1096 xhci_die(xhci);
1097 return;
1098 }
1099 dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high);
1100 pci_dma_read(PCI_DEVICE(xhci), erstba, &seg, sizeof(seg));
1101 le32_to_cpus(&seg.addr_low);
1102 le32_to_cpus(&seg.addr_high);
1103 le32_to_cpus(&seg.size);
1104 if (seg.size < 16 || seg.size > 4096) {
1105 DPRINTF("xhci: invalid value for segment size: %d\n", seg.size);
1106 xhci_die(xhci);
1107 return;
1108 }
1109 intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high);
1110 intr->er_size = seg.size;
1111
1112 intr->er_ep_idx = 0;
1113 intr->er_pcs = 1;
1114 intr->er_full = 0;
1115
1116 DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n",
1117 v, intr->er_start, intr->er_size);
1118 }
1119
1120 static void xhci_run(XHCIState *xhci)
1121 {
1122 trace_usb_xhci_run();
1123 xhci->usbsts &= ~USBSTS_HCH;
1124 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1125 }
1126
1127 static void xhci_stop(XHCIState *xhci)
1128 {
1129 trace_usb_xhci_stop();
1130 xhci->usbsts |= USBSTS_HCH;
1131 xhci->crcr_low &= ~CRCR_CRR;
1132 }
1133
1134 static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count,
1135 dma_addr_t base)
1136 {
1137 XHCIStreamContext *stctx;
1138 unsigned int i;
1139
1140 stctx = g_new0(XHCIStreamContext, count);
1141 for (i = 0; i < count; i++) {
1142 stctx[i].pctx = base + i * 16;
1143 stctx[i].sct = -1;
1144 }
1145 return stctx;
1146 }
1147
1148 static void xhci_reset_streams(XHCIEPContext *epctx)
1149 {
1150 unsigned int i;
1151
1152 for (i = 0; i < epctx->nr_pstreams; i++) {
1153 epctx->pstreams[i].sct = -1;
1154 }
1155 }
1156
1157 static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base)
1158 {
1159 assert(epctx->pstreams == NULL);
1160 epctx->nr_pstreams = 2 << epctx->max_pstreams;
1161 epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base);
1162 }
1163
1164 static void xhci_free_streams(XHCIEPContext *epctx)
1165 {
1166 assert(epctx->pstreams != NULL);
1167
1168 g_free(epctx->pstreams);
1169 epctx->pstreams = NULL;
1170 epctx->nr_pstreams = 0;
1171 }
1172
1173 static int xhci_epmask_to_eps_with_streams(XHCIState *xhci,
1174 unsigned int slotid,
1175 uint32_t epmask,
1176 XHCIEPContext **epctxs,
1177 USBEndpoint **eps)
1178 {
1179 XHCISlot *slot;
1180 XHCIEPContext *epctx;
1181 USBEndpoint *ep;
1182 int i, j;
1183
1184 assert(slotid >= 1 && slotid <= xhci->numslots);
1185
1186 slot = &xhci->slots[slotid - 1];
1187
1188 for (i = 2, j = 0; i <= 31; i++) {
1189 if (!(epmask & (1u << i))) {
1190 continue;
1191 }
1192
1193 epctx = slot->eps[i - 1];
1194 ep = xhci_epid_to_usbep(xhci, slotid, i);
1195 if (!epctx || !epctx->nr_pstreams || !ep) {
1196 continue;
1197 }
1198
1199 if (epctxs) {
1200 epctxs[j] = epctx;
1201 }
1202 eps[j++] = ep;
1203 }
1204 return j;
1205 }
1206
1207 static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid,
1208 uint32_t epmask)
1209 {
1210 USBEndpoint *eps[30];
1211 int nr_eps;
1212
1213 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps);
1214 if (nr_eps) {
1215 usb_device_free_streams(eps[0]->dev, eps, nr_eps);
1216 }
1217 }
1218
1219 static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid,
1220 uint32_t epmask)
1221 {
1222 XHCIEPContext *epctxs[30];
1223 USBEndpoint *eps[30];
1224 int i, r, nr_eps, req_nr_streams, dev_max_streams;
1225
1226 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs,
1227 eps);
1228 if (nr_eps == 0) {
1229 return CC_SUCCESS;
1230 }
1231
1232 req_nr_streams = epctxs[0]->nr_pstreams;
1233 dev_max_streams = eps[0]->max_streams;
1234
1235 for (i = 1; i < nr_eps; i++) {
1236 /*
1237 * HdG: I don't expect these to ever trigger, but if they do we need
1238 * to come up with another solution, ie group identical endpoints
1239 * together and make an usb_device_alloc_streams call per group.
1240 */
1241 if (epctxs[i]->nr_pstreams != req_nr_streams) {
1242 FIXME("guest streams config not identical for all eps");
1243 return CC_RESOURCE_ERROR;
1244 }
1245 if (eps[i]->max_streams != dev_max_streams) {
1246 FIXME("device streams config not identical for all eps");
1247 return CC_RESOURCE_ERROR;
1248 }
1249 }
1250
1251 /*
1252 * max-streams in both the device descriptor and in the controller is a
1253 * power of 2. But stream id 0 is reserved, so if a device can do up to 4
1254 * streams the guest will ask for 5 rounded up to the next power of 2 which
1255 * becomes 8. For emulated devices usb_device_alloc_streams is a nop.
1256 *
1257 * For redirected devices however this is an issue, as there we must ask
1258 * the real xhci controller to alloc streams, and the host driver for the
1259 * real xhci controller will likely disallow allocating more streams then
1260 * the device can handle.
1261 *
1262 * So we limit the requested nr_streams to the maximum number the device
1263 * can handle.
1264 */
1265 if (req_nr_streams > dev_max_streams) {
1266 req_nr_streams = dev_max_streams;
1267 }
1268
1269 r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams);
1270 if (r != 0) {
1271 DPRINTF("xhci: alloc streams failed\n");
1272 return CC_RESOURCE_ERROR;
1273 }
1274
1275 return CC_SUCCESS;
1276 }
1277
1278 static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx,
1279 unsigned int streamid,
1280 uint32_t *cc_error)
1281 {
1282 XHCIStreamContext *sctx;
1283 dma_addr_t base;
1284 uint32_t ctx[2], sct;
1285
1286 assert(streamid != 0);
1287 if (epctx->lsa) {
1288 if (streamid >= epctx->nr_pstreams) {
1289 *cc_error = CC_INVALID_STREAM_ID_ERROR;
1290 return NULL;
1291 }
1292 sctx = epctx->pstreams + streamid;
1293 } else {
1294 FIXME("secondary streams not implemented yet");
1295 }
1296
1297 if (sctx->sct == -1) {
1298 xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx));
1299 sct = (ctx[0] >> 1) & 0x07;
1300 if (epctx->lsa && sct != 1) {
1301 *cc_error = CC_INVALID_STREAM_TYPE_ERROR;
1302 return NULL;
1303 }
1304 sctx->sct = sct;
1305 base = xhci_addr64(ctx[0] & ~0xf, ctx[1]);
1306 xhci_ring_init(epctx->xhci, &sctx->ring, base);
1307 }
1308 return sctx;
1309 }
1310
1311 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
1312 XHCIStreamContext *sctx, uint32_t state)
1313 {
1314 XHCIRing *ring = NULL;
1315 uint32_t ctx[5];
1316 uint32_t ctx2[2];
1317
1318 xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1319 ctx[0] &= ~EP_STATE_MASK;
1320 ctx[0] |= state;
1321
1322 /* update ring dequeue ptr */
1323 if (epctx->nr_pstreams) {
1324 if (sctx != NULL) {
1325 ring = &sctx->ring;
1326 xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1327 ctx2[0] &= 0xe;
1328 ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs;
1329 ctx2[1] = (sctx->ring.dequeue >> 16) >> 16;
1330 xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
1331 }
1332 } else {
1333 ring = &epctx->ring;
1334 }
1335 if (ring) {
1336 ctx[2] = ring->dequeue | ring->ccs;
1337 ctx[3] = (ring->dequeue >> 16) >> 16;
1338
1339 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n",
1340 epctx->pctx, state, ctx[3], ctx[2]);
1341 }
1342
1343 xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx));
1344 if (epctx->state != state) {
1345 trace_usb_xhci_ep_state(epctx->slotid, epctx->epid,
1346 ep_state_name(epctx->state),
1347 ep_state_name(state));
1348 }
1349 epctx->state = state;
1350 }
1351
1352 static void xhci_ep_kick_timer(void *opaque)
1353 {
1354 XHCIEPContext *epctx = opaque;
1355 xhci_kick_ep(epctx->xhci, epctx->slotid, epctx->epid, 0);
1356 }
1357
1358 static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci,
1359 unsigned int slotid,
1360 unsigned int epid)
1361 {
1362 XHCIEPContext *epctx;
1363 int i;
1364
1365 epctx = g_new0(XHCIEPContext, 1);
1366 epctx->xhci = xhci;
1367 epctx->slotid = slotid;
1368 epctx->epid = epid;
1369
1370 for (i = 0; i < ARRAY_SIZE(epctx->transfers); i++) {
1371 epctx->transfers[i].xhci = xhci;
1372 epctx->transfers[i].slotid = slotid;
1373 epctx->transfers[i].epid = epid;
1374 usb_packet_init(&epctx->transfers[i].packet);
1375 }
1376 epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx);
1377
1378 return epctx;
1379 }
1380
1381 static void xhci_init_epctx(XHCIEPContext *epctx,
1382 dma_addr_t pctx, uint32_t *ctx)
1383 {
1384 dma_addr_t dequeue;
1385
1386 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
1387
1388 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK;
1389 epctx->pctx = pctx;
1390 epctx->max_psize = ctx[1]>>16;
1391 epctx->max_psize *= 1+((ctx[1]>>8)&0xff);
1392 epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask;
1393 epctx->lsa = (ctx[0] >> 15) & 1;
1394 if (epctx->max_pstreams) {
1395 xhci_alloc_streams(epctx, dequeue);
1396 } else {
1397 xhci_ring_init(epctx->xhci, &epctx->ring, dequeue);
1398 epctx->ring.ccs = ctx[2] & 1;
1399 }
1400
1401 epctx->interval = 1 << ((ctx[0] >> 16) & 0xff);
1402 }
1403
1404 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
1405 unsigned int epid, dma_addr_t pctx,
1406 uint32_t *ctx)
1407 {
1408 XHCISlot *slot;
1409 XHCIEPContext *epctx;
1410
1411 trace_usb_xhci_ep_enable(slotid, epid);
1412 assert(slotid >= 1 && slotid <= xhci->numslots);
1413 assert(epid >= 1 && epid <= 31);
1414
1415 slot = &xhci->slots[slotid-1];
1416 if (slot->eps[epid-1]) {
1417 xhci_disable_ep(xhci, slotid, epid);
1418 }
1419
1420 epctx = xhci_alloc_epctx(xhci, slotid, epid);
1421 slot->eps[epid-1] = epctx;
1422 xhci_init_epctx(epctx, pctx, ctx);
1423
1424 DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) "
1425 "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize);
1426
1427 epctx->mfindex_last = 0;
1428
1429 epctx->state = EP_RUNNING;
1430 ctx[0] &= ~EP_STATE_MASK;
1431 ctx[0] |= EP_RUNNING;
1432
1433 return CC_SUCCESS;
1434 }
1435
1436 static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report)
1437 {
1438 int killed = 0;
1439
1440 if (report && (t->running_async || t->running_retry)) {
1441 t->status = report;
1442 xhci_xfer_report(t);
1443 }
1444
1445 if (t->running_async) {
1446 usb_cancel_packet(&t->packet);
1447 t->running_async = 0;
1448 killed = 1;
1449 }
1450 if (t->running_retry) {
1451 XHCIEPContext *epctx = t->xhci->slots[t->slotid-1].eps[t->epid-1];
1452 if (epctx) {
1453 epctx->retry = NULL;
1454 timer_del(epctx->kick_timer);
1455 }
1456 t->running_retry = 0;
1457 killed = 1;
1458 }
1459 g_free(t->trbs);
1460
1461 t->trbs = NULL;
1462 t->trb_count = t->trb_alloced = 0;
1463
1464 return killed;
1465 }
1466
1467 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
1468 unsigned int epid, TRBCCode report)
1469 {
1470 XHCISlot *slot;
1471 XHCIEPContext *epctx;
1472 int i, xferi, killed = 0;
1473 USBEndpoint *ep = NULL;
1474 assert(slotid >= 1 && slotid <= xhci->numslots);
1475 assert(epid >= 1 && epid <= 31);
1476
1477 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid);
1478
1479 slot = &xhci->slots[slotid-1];
1480
1481 if (!slot->eps[epid-1]) {
1482 return 0;
1483 }
1484
1485 epctx = slot->eps[epid-1];
1486
1487 xferi = epctx->next_xfer;
1488 for (i = 0; i < TD_QUEUE; i++) {
1489 killed += xhci_ep_nuke_one_xfer(&epctx->transfers[xferi], report);
1490 if (killed) {
1491 report = 0; /* Only report once */
1492 }
1493 epctx->transfers[xferi].packet.ep = NULL;
1494 xferi = (xferi + 1) % TD_QUEUE;
1495 }
1496
1497 ep = xhci_epid_to_usbep(xhci, slotid, epid);
1498 if (ep) {
1499 usb_device_ep_stopped(ep->dev, ep);
1500 }
1501 return killed;
1502 }
1503
1504 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
1505 unsigned int epid)
1506 {
1507 XHCISlot *slot;
1508 XHCIEPContext *epctx;
1509 int i;
1510
1511 trace_usb_xhci_ep_disable(slotid, epid);
1512 assert(slotid >= 1 && slotid <= xhci->numslots);
1513 assert(epid >= 1 && epid <= 31);
1514
1515 slot = &xhci->slots[slotid-1];
1516
1517 if (!slot->eps[epid-1]) {
1518 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid);
1519 return CC_SUCCESS;
1520 }
1521
1522 xhci_ep_nuke_xfers(xhci, slotid, epid, 0);
1523
1524 epctx = slot->eps[epid-1];
1525
1526 if (epctx->nr_pstreams) {
1527 xhci_free_streams(epctx);
1528 }
1529
1530 for (i = 0; i < ARRAY_SIZE(epctx->transfers); i++) {
1531 usb_packet_cleanup(&epctx->transfers[i].packet);
1532 }
1533
1534 /* only touch guest RAM if we're not resetting the HC */
1535 if (xhci->dcbaap_low || xhci->dcbaap_high) {
1536 xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED);
1537 }
1538
1539 timer_free(epctx->kick_timer);
1540 g_free(epctx);
1541 slot->eps[epid-1] = NULL;
1542
1543 return CC_SUCCESS;
1544 }
1545
1546 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
1547 unsigned int epid)
1548 {
1549 XHCISlot *slot;
1550 XHCIEPContext *epctx;
1551
1552 trace_usb_xhci_ep_stop(slotid, epid);
1553 assert(slotid >= 1 && slotid <= xhci->numslots);
1554
1555 if (epid < 1 || epid > 31) {
1556 DPRINTF("xhci: bad ep %d\n", epid);
1557 return CC_TRB_ERROR;
1558 }
1559
1560 slot = &xhci->slots[slotid-1];
1561
1562 if (!slot->eps[epid-1]) {
1563 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1564 return CC_EP_NOT_ENABLED_ERROR;
1565 }
1566
1567 if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) {
1568 DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, "
1569 "data might be lost\n");
1570 }
1571
1572 epctx = slot->eps[epid-1];
1573
1574 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1575
1576 if (epctx->nr_pstreams) {
1577 xhci_reset_streams(epctx);
1578 }
1579
1580 return CC_SUCCESS;
1581 }
1582
1583 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
1584 unsigned int epid)
1585 {
1586 XHCISlot *slot;
1587 XHCIEPContext *epctx;
1588
1589 trace_usb_xhci_ep_reset(slotid, epid);
1590 assert(slotid >= 1 && slotid <= xhci->numslots);
1591
1592 if (epid < 1 || epid > 31) {
1593 DPRINTF("xhci: bad ep %d\n", epid);
1594 return CC_TRB_ERROR;
1595 }
1596
1597 slot = &xhci->slots[slotid-1];
1598
1599 if (!slot->eps[epid-1]) {
1600 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1601 return CC_EP_NOT_ENABLED_ERROR;
1602 }
1603
1604 epctx = slot->eps[epid-1];
1605
1606 if (epctx->state != EP_HALTED) {
1607 DPRINTF("xhci: reset EP while EP %d not halted (%d)\n",
1608 epid, epctx->state);
1609 return CC_CONTEXT_STATE_ERROR;
1610 }
1611
1612 if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) {
1613 DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, "
1614 "data might be lost\n");
1615 }
1616
1617 if (!xhci->slots[slotid-1].uport ||
1618 !xhci->slots[slotid-1].uport->dev ||
1619 !xhci->slots[slotid-1].uport->dev->attached) {
1620 return CC_USB_TRANSACTION_ERROR;
1621 }
1622
1623 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED);
1624
1625 if (epctx->nr_pstreams) {
1626 xhci_reset_streams(epctx);
1627 }
1628
1629 return CC_SUCCESS;
1630 }
1631
1632 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid,
1633 unsigned int epid, unsigned int streamid,
1634 uint64_t pdequeue)
1635 {
1636 XHCISlot *slot;
1637 XHCIEPContext *epctx;
1638 XHCIStreamContext *sctx;
1639 dma_addr_t dequeue;
1640
1641 assert(slotid >= 1 && slotid <= xhci->numslots);
1642
1643 if (epid < 1 || epid > 31) {
1644 DPRINTF("xhci: bad ep %d\n", epid);
1645 return CC_TRB_ERROR;
1646 }
1647
1648 trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue);
1649 dequeue = xhci_mask64(pdequeue);
1650
1651 slot = &xhci->slots[slotid-1];
1652
1653 if (!slot->eps[epid-1]) {
1654 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1655 return CC_EP_NOT_ENABLED_ERROR;
1656 }
1657
1658 epctx = slot->eps[epid-1];
1659
1660 if (epctx->state != EP_STOPPED) {
1661 DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid);
1662 return CC_CONTEXT_STATE_ERROR;
1663 }
1664
1665 if (epctx->nr_pstreams) {
1666 uint32_t err;
1667 sctx = xhci_find_stream(epctx, streamid, &err);
1668 if (sctx == NULL) {
1669 return err;
1670 }
1671 xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf);
1672 sctx->ring.ccs = dequeue & 1;
1673 } else {
1674 sctx = NULL;
1675 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF);
1676 epctx->ring.ccs = dequeue & 1;
1677 }
1678
1679 xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED);
1680
1681 return CC_SUCCESS;
1682 }
1683
1684 static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer)
1685 {
1686 XHCIState *xhci = xfer->xhci;
1687 int i;
1688
1689 xfer->int_req = false;
1690 pci_dma_sglist_init(&xfer->sgl, PCI_DEVICE(xhci), xfer->trb_count);
1691 for (i = 0; i < xfer->trb_count; i++) {
1692 XHCITRB *trb = &xfer->trbs[i];
1693 dma_addr_t addr;
1694 unsigned int chunk = 0;
1695
1696 if (trb->control & TRB_TR_IOC) {
1697 xfer->int_req = true;
1698 }
1699
1700 switch (TRB_TYPE(*trb)) {
1701 case TR_DATA:
1702 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) {
1703 DPRINTF("xhci: data direction mismatch for TR_DATA\n");
1704 goto err;
1705 }
1706 /* fallthrough */
1707 case TR_NORMAL:
1708 case TR_ISOCH:
1709 addr = xhci_mask64(trb->parameter);
1710 chunk = trb->status & 0x1ffff;
1711 if (trb->control & TRB_TR_IDT) {
1712 if (chunk > 8 || in_xfer) {
1713 DPRINTF("xhci: invalid immediate data TRB\n");
1714 goto err;
1715 }
1716 qemu_sglist_add(&xfer->sgl, trb->addr, chunk);
1717 } else {
1718 qemu_sglist_add(&xfer->sgl, addr, chunk);
1719 }
1720 break;
1721 }
1722 }
1723
1724 return 0;
1725
1726 err:
1727 qemu_sglist_destroy(&xfer->sgl);
1728 xhci_die(xhci);
1729 return -1;
1730 }
1731
1732 static void xhci_xfer_unmap(XHCITransfer *xfer)
1733 {
1734 usb_packet_unmap(&xfer->packet, &xfer->sgl);
1735 qemu_sglist_destroy(&xfer->sgl);
1736 }
1737
1738 static void xhci_xfer_report(XHCITransfer *xfer)
1739 {
1740 uint32_t edtla = 0;
1741 unsigned int left;
1742 bool reported = 0;
1743 bool shortpkt = 0;
1744 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS};
1745 XHCIState *xhci = xfer->xhci;
1746 int i;
1747
1748 left = xfer->packet.actual_length;
1749
1750 for (i = 0; i < xfer->trb_count; i++) {
1751 XHCITRB *trb = &xfer->trbs[i];
1752 unsigned int chunk = 0;
1753
1754 switch (TRB_TYPE(*trb)) {
1755 case TR_DATA:
1756 case TR_NORMAL:
1757 case TR_ISOCH:
1758 chunk = trb->status & 0x1ffff;
1759 if (chunk > left) {
1760 chunk = left;
1761 if (xfer->status == CC_SUCCESS) {
1762 shortpkt = 1;
1763 }
1764 }
1765 left -= chunk;
1766 edtla += chunk;
1767 break;
1768 case TR_STATUS:
1769 reported = 0;
1770 shortpkt = 0;
1771 break;
1772 }
1773
1774 if (!reported && ((trb->control & TRB_TR_IOC) ||
1775 (shortpkt && (trb->control & TRB_TR_ISP)) ||
1776 (xfer->status != CC_SUCCESS && left == 0))) {
1777 event.slotid = xfer->slotid;
1778 event.epid = xfer->epid;
1779 event.length = (trb->status & 0x1ffff) - chunk;
1780 event.flags = 0;
1781 event.ptr = trb->addr;
1782 if (xfer->status == CC_SUCCESS) {
1783 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS;
1784 } else {
1785 event.ccode = xfer->status;
1786 }
1787 if (TRB_TYPE(*trb) == TR_EVDATA) {
1788 event.ptr = trb->parameter;
1789 event.flags |= TRB_EV_ED;
1790 event.length = edtla & 0xffffff;
1791 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length);
1792 edtla = 0;
1793 }
1794 xhci_event(xhci, &event, TRB_INTR(*trb));
1795 reported = 1;
1796 if (xfer->status != CC_SUCCESS) {
1797 return;
1798 }
1799 }
1800
1801 switch (TRB_TYPE(*trb)) {
1802 case TR_SETUP:
1803 reported = 0;
1804 shortpkt = 0;
1805 break;
1806 }
1807
1808 }
1809 }
1810
1811 static void xhci_stall_ep(XHCITransfer *xfer)
1812 {
1813 XHCIState *xhci = xfer->xhci;
1814 XHCISlot *slot = &xhci->slots[xfer->slotid-1];
1815 XHCIEPContext *epctx = slot->eps[xfer->epid-1];
1816 uint32_t err;
1817 XHCIStreamContext *sctx;
1818
1819 if (epctx->nr_pstreams) {
1820 sctx = xhci_find_stream(epctx, xfer->streamid, &err);
1821 if (sctx == NULL) {
1822 return;
1823 }
1824 sctx->ring.dequeue = xfer->trbs[0].addr;
1825 sctx->ring.ccs = xfer->trbs[0].ccs;
1826 xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED);
1827 } else {
1828 epctx->ring.dequeue = xfer->trbs[0].addr;
1829 epctx->ring.ccs = xfer->trbs[0].ccs;
1830 xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED);
1831 }
1832 }
1833
1834 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer,
1835 XHCIEPContext *epctx);
1836
1837 static int xhci_setup_packet(XHCITransfer *xfer)
1838 {
1839 XHCIState *xhci = xfer->xhci;
1840 USBEndpoint *ep;
1841 int dir;
1842
1843 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT;
1844
1845 if (xfer->packet.ep) {
1846 ep = xfer->packet.ep;
1847 } else {
1848 ep = xhci_epid_to_usbep(xhci, xfer->slotid, xfer->epid);
1849 if (!ep) {
1850 DPRINTF("xhci: slot %d has no device\n",
1851 xfer->slotid);
1852 return -1;
1853 }
1854 }
1855
1856 xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */
1857 usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid,
1858 xfer->trbs[0].addr, false, xfer->int_req);
1859 usb_packet_map(&xfer->packet, &xfer->sgl);
1860 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
1861 xfer->packet.pid, ep->dev->addr, ep->nr);
1862 return 0;
1863 }
1864
1865 static int xhci_complete_packet(XHCITransfer *xfer)
1866 {
1867 if (xfer->packet.status == USB_RET_ASYNC) {
1868 trace_usb_xhci_xfer_async(xfer);
1869 xfer->running_async = 1;
1870 xfer->running_retry = 0;
1871 xfer->complete = 0;
1872 return 0;
1873 } else if (xfer->packet.status == USB_RET_NAK) {
1874 trace_usb_xhci_xfer_nak(xfer);
1875 xfer->running_async = 0;
1876 xfer->running_retry = 1;
1877 xfer->complete = 0;
1878 return 0;
1879 } else {
1880 xfer->running_async = 0;
1881 xfer->running_retry = 0;
1882 xfer->complete = 1;
1883 xhci_xfer_unmap(xfer);
1884 }
1885
1886 if (xfer->packet.status == USB_RET_SUCCESS) {
1887 trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length);
1888 xfer->status = CC_SUCCESS;
1889 xhci_xfer_report(xfer);
1890 return 0;
1891 }
1892
1893 /* error */
1894 trace_usb_xhci_xfer_error(xfer, xfer->packet.status);
1895 switch (xfer->packet.status) {
1896 case USB_RET_NODEV:
1897 case USB_RET_IOERROR:
1898 xfer->status = CC_USB_TRANSACTION_ERROR;
1899 xhci_xfer_report(xfer);
1900 xhci_stall_ep(xfer);
1901 break;
1902 case USB_RET_STALL:
1903 xfer->status = CC_STALL_ERROR;
1904 xhci_xfer_report(xfer);
1905 xhci_stall_ep(xfer);
1906 break;
1907 case USB_RET_BABBLE:
1908 xfer->status = CC_BABBLE_DETECTED;
1909 xhci_xfer_report(xfer);
1910 xhci_stall_ep(xfer);
1911 break;
1912 default:
1913 DPRINTF("%s: FIXME: status = %d\n", __func__,
1914 xfer->packet.status);
1915 FIXME("unhandled USB_RET_*");
1916 }
1917 return 0;
1918 }
1919
1920 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
1921 {
1922 XHCITRB *trb_setup, *trb_status;
1923 uint8_t bmRequestType;
1924
1925 trb_setup = &xfer->trbs[0];
1926 trb_status = &xfer->trbs[xfer->trb_count-1];
1927
1928 trace_usb_xhci_xfer_start(xfer, xfer->slotid, xfer->epid, xfer->streamid);
1929
1930 /* at most one Event Data TRB allowed after STATUS */
1931 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) {
1932 trb_status--;
1933 }
1934
1935 /* do some sanity checks */
1936 if (TRB_TYPE(*trb_setup) != TR_SETUP) {
1937 DPRINTF("xhci: ep0 first TD not SETUP: %d\n",
1938 TRB_TYPE(*trb_setup));
1939 return -1;
1940 }
1941 if (TRB_TYPE(*trb_status) != TR_STATUS) {
1942 DPRINTF("xhci: ep0 last TD not STATUS: %d\n",
1943 TRB_TYPE(*trb_status));
1944 return -1;
1945 }
1946 if (!(trb_setup->control & TRB_TR_IDT)) {
1947 DPRINTF("xhci: Setup TRB doesn't have IDT set\n");
1948 return -1;
1949 }
1950 if ((trb_setup->status & 0x1ffff) != 8) {
1951 DPRINTF("xhci: Setup TRB has bad length (%d)\n",
1952 (trb_setup->status & 0x1ffff));
1953 return -1;
1954 }
1955
1956 bmRequestType = trb_setup->parameter;
1957
1958 xfer->in_xfer = bmRequestType & USB_DIR_IN;
1959 xfer->iso_xfer = false;
1960 xfer->timed_xfer = false;
1961
1962 if (xhci_setup_packet(xfer) < 0) {
1963 return -1;
1964 }
1965 xfer->packet.parameter = trb_setup->parameter;
1966
1967 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1968
1969 xhci_complete_packet(xfer);
1970 if (!xfer->running_async && !xfer->running_retry) {
1971 xhci_kick_ep(xhci, xfer->slotid, xfer->epid, 0);
1972 }
1973 return 0;
1974 }
1975
1976 static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer,
1977 XHCIEPContext *epctx, uint64_t mfindex)
1978 {
1979 uint64_t asap = ((mfindex + epctx->interval - 1) &
1980 ~(epctx->interval-1));
1981 uint64_t kick = epctx->mfindex_last + epctx->interval;
1982
1983 assert(epctx->interval != 0);
1984 xfer->mfindex_kick = MAX(asap, kick);
1985 }
1986
1987 static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
1988 XHCIEPContext *epctx, uint64_t mfindex)
1989 {
1990 if (xfer->trbs[0].control & TRB_TR_SIA) {
1991 uint64_t asap = ((mfindex + epctx->interval - 1) &
1992 ~(epctx->interval-1));
1993 if (asap >= epctx->mfindex_last &&
1994 asap <= epctx->mfindex_last + epctx->interval * 4) {
1995 xfer->mfindex_kick = epctx->mfindex_last + epctx->interval;
1996 } else {
1997 xfer->mfindex_kick = asap;
1998 }
1999 } else {
2000 xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
2001 & TRB_TR_FRAMEID_MASK) << 3;
2002 xfer->mfindex_kick |= mfindex & ~0x3fff;
2003 if (xfer->mfindex_kick + 0x100 < mfindex) {
2004 xfer->mfindex_kick += 0x4000;
2005 }
2006 }
2007 }
2008
2009 static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
2010 XHCIEPContext *epctx, uint64_t mfindex)
2011 {
2012 if (xfer->mfindex_kick > mfindex) {
2013 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
2014 (xfer->mfindex_kick - mfindex) * 125000);
2015 xfer->running_retry = 1;
2016 } else {
2017 epctx->mfindex_last = xfer->mfindex_kick;
2018 timer_del(epctx->kick_timer);
2019 xfer->running_retry = 0;
2020 }
2021 }
2022
2023
2024 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
2025 {
2026 uint64_t mfindex;
2027
2028 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", xfer->slotid, xfer->epid);
2029
2030 xfer->in_xfer = epctx->type>>2;
2031
2032 switch(epctx->type) {
2033 case ET_INTR_OUT:
2034 case ET_INTR_IN:
2035 xfer->pkts = 0;
2036 xfer->iso_xfer = false;
2037 xfer->timed_xfer = true;
2038 mfindex = xhci_mfindex_get(xhci);
2039 xhci_calc_intr_kick(xhci, xfer, epctx, mfindex);
2040 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
2041 if (xfer->running_retry) {
2042 return -1;
2043 }
2044 break;
2045 case ET_BULK_OUT:
2046 case ET_BULK_IN:
2047 xfer->pkts = 0;
2048 xfer->iso_xfer = false;
2049 xfer->timed_xfer = false;
2050 break;
2051 case ET_ISO_OUT:
2052 case ET_ISO_IN:
2053 xfer->pkts = 1;
2054 xfer->iso_xfer = true;
2055 xfer->timed_xfer = true;
2056 mfindex = xhci_mfindex_get(xhci);
2057 xhci_calc_iso_kick(xhci, xfer, epctx, mfindex);
2058 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
2059 if (xfer->running_retry) {
2060 return -1;
2061 }
2062 break;
2063 default:
2064 trace_usb_xhci_unimplemented("endpoint type", epctx->type);
2065 return -1;
2066 }
2067
2068 if (xhci_setup_packet(xfer) < 0) {
2069 return -1;
2070 }
2071 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
2072
2073 xhci_complete_packet(xfer);
2074 if (!xfer->running_async && !xfer->running_retry) {
2075 xhci_kick_ep(xhci, xfer->slotid, xfer->epid, xfer->streamid);
2076 }
2077 return 0;
2078 }
2079
2080 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
2081 {
2082 trace_usb_xhci_xfer_start(xfer, xfer->slotid, xfer->epid, xfer->streamid);
2083 return xhci_submit(xhci, xfer, epctx);
2084 }
2085
2086 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
2087 unsigned int epid, unsigned int streamid)
2088 {
2089 XHCIStreamContext *stctx;
2090 XHCIEPContext *epctx;
2091 XHCIRing *ring;
2092 USBEndpoint *ep = NULL;
2093 uint64_t mfindex;
2094 int length;
2095 int i;
2096
2097 trace_usb_xhci_ep_kick(slotid, epid, streamid);
2098 assert(slotid >= 1 && slotid <= xhci->numslots);
2099 assert(epid >= 1 && epid <= 31);
2100
2101 if (!xhci->slots[slotid-1].enabled) {
2102 DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid);
2103 return;
2104 }
2105 epctx = xhci->slots[slotid-1].eps[epid-1];
2106 if (!epctx) {
2107 DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n",
2108 epid, slotid);
2109 return;
2110 }
2111
2112 /* If the device has been detached, but the guest has not noticed this
2113 yet the 2 above checks will succeed, but we must NOT continue */
2114 if (!xhci->slots[slotid - 1].uport ||
2115 !xhci->slots[slotid - 1].uport->dev ||
2116 !xhci->slots[slotid - 1].uport->dev->attached) {
2117 return;
2118 }
2119
2120 if (epctx->retry) {
2121 XHCITransfer *xfer = epctx->retry;
2122
2123 trace_usb_xhci_xfer_retry(xfer);
2124 assert(xfer->running_retry);
2125 if (xfer->timed_xfer) {
2126 /* time to kick the transfer? */
2127 mfindex = xhci_mfindex_get(xhci);
2128 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex);
2129 if (xfer->running_retry) {
2130 return;
2131 }
2132 xfer->timed_xfer = 0;
2133 xfer->running_retry = 1;
2134 }
2135 if (xfer->iso_xfer) {
2136 /* retry iso transfer */
2137 if (xhci_setup_packet(xfer) < 0) {
2138 return;
2139 }
2140 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
2141 assert(xfer->packet.status != USB_RET_NAK);
2142 xhci_complete_packet(xfer);
2143 } else {
2144 /* retry nak'ed transfer */
2145 if (xhci_setup_packet(xfer) < 0) {
2146 return;
2147 }
2148 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
2149 if (xfer->packet.status == USB_RET_NAK) {
2150 return;
2151 }
2152 xhci_complete_packet(xfer);
2153 }
2154 assert(!xfer->running_retry);
2155 epctx->retry = NULL;
2156 }
2157
2158 if (epctx->state == EP_HALTED) {
2159 DPRINTF("xhci: ep halted, not running schedule\n");
2160 return;
2161 }
2162
2163
2164 if (epctx->nr_pstreams) {
2165 uint32_t err;
2166 stctx = xhci_find_stream(epctx, streamid, &err);
2167 if (stctx == NULL) {
2168 return;
2169 }
2170 ring = &stctx->ring;
2171 xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING);
2172 } else {
2173 ring = &epctx->ring;
2174 streamid = 0;
2175 xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING);
2176 }
2177 assert(ring->dequeue != 0);
2178
2179 while (1) {
2180 XHCITransfer *xfer = &epctx->transfers[epctx->next_xfer];
2181 if (xfer->running_async || xfer->running_retry) {
2182 break;
2183 }
2184 length = xhci_ring_chain_length(xhci, ring);
2185 if (length < 0) {
2186 break;
2187 } else if (length == 0) {
2188 break;
2189 }
2190 if (xfer->trbs && xfer->trb_alloced < length) {
2191 xfer->trb_count = 0;
2192 xfer->trb_alloced = 0;
2193 g_free(xfer->trbs);
2194 xfer->trbs = NULL;
2195 }
2196 if (!xfer->trbs) {
2197 xfer->trbs = g_new(XHCITRB, length);
2198 xfer->trb_alloced = length;
2199 }
2200 xfer->trb_count = length;
2201
2202 for (i = 0; i < length; i++) {
2203 assert(xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL));
2204 }
2205 xfer->streamid = streamid;
2206
2207 if (epid == 1) {
2208 if (xhci_fire_ctl_transfer(xhci, xfer) >= 0) {
2209 epctx->next_xfer = (epctx->next_xfer + 1) % TD_QUEUE;
2210 } else {
2211 DPRINTF("xhci: error firing CTL transfer\n");
2212 }
2213 } else {
2214 if (xhci_fire_transfer(xhci, xfer, epctx) >= 0) {
2215 epctx->next_xfer = (epctx->next_xfer + 1) % TD_QUEUE;
2216 } else {
2217 if (!xfer->timed_xfer) {
2218 DPRINTF("xhci: error firing data transfer\n");
2219 }
2220 }
2221 }
2222
2223 if (epctx->state == EP_HALTED) {
2224 break;
2225 }
2226 if (xfer->running_retry) {
2227 DPRINTF("xhci: xfer nacked, stopping schedule\n");
2228 epctx->retry = xfer;
2229 break;
2230 }
2231 }
2232
2233 ep = xhci_epid_to_usbep(xhci, slotid, epid);
2234 if (ep) {
2235 usb_device_flush_ep_queue(ep->dev, ep);
2236 }
2237 }
2238
2239 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid)
2240 {
2241 trace_usb_xhci_slot_enable(slotid);
2242 assert(slotid >= 1 && slotid <= xhci->numslots);
2243 xhci->slots[slotid-1].enabled = 1;
2244 xhci->slots[slotid-1].uport = NULL;
2245 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31);
2246
2247 return CC_SUCCESS;
2248 }
2249
2250 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid)
2251 {
2252 int i;
2253
2254 trace_usb_xhci_slot_disable(slotid);
2255 assert(slotid >= 1 && slotid <= xhci->numslots);
2256
2257 for (i = 1; i <= 31; i++) {
2258 if (xhci->slots[slotid-1].eps[i-1]) {
2259 xhci_disable_ep(xhci, slotid, i);
2260 }
2261 }
2262
2263 xhci->slots[slotid-1].enabled = 0;
2264 xhci->slots[slotid-1].addressed = 0;
2265 xhci->slots[slotid-1].uport = NULL;
2266 return CC_SUCCESS;
2267 }
2268
2269 static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx)
2270 {
2271 USBPort *uport;
2272 char path[32];
2273 int i, pos, port;
2274
2275 port = (slot_ctx[1]>>16) & 0xFF;
2276 if (port < 1 || port > xhci->numports) {
2277 return NULL;
2278 }
2279 port = xhci->ports[port-1].uport->index+1;
2280 pos = snprintf(path, sizeof(path), "%d", port);
2281 for (i = 0; i < 5; i++) {
2282 port = (slot_ctx[0] >> 4*i) & 0x0f;
2283 if (!port) {
2284 break;
2285 }
2286 pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port);
2287 }
2288
2289 QTAILQ_FOREACH(uport, &xhci->bus.used, next) {
2290 if (strcmp(uport->path, path) == 0) {
2291 return uport;
2292 }
2293 }
2294 return NULL;
2295 }
2296
2297 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
2298 uint64_t pictx, bool bsr)
2299 {
2300 XHCISlot *slot;
2301 USBPort *uport;
2302 USBDevice *dev;
2303 dma_addr_t ictx, octx, dcbaap;
2304 uint64_t poctx;
2305 uint32_t ictl_ctx[2];
2306 uint32_t slot_ctx[4];
2307 uint32_t ep0_ctx[5];
2308 int i;
2309 TRBCCode res;
2310
2311 assert(slotid >= 1 && slotid <= xhci->numslots);
2312
2313 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
2314 poctx = ldq_le_pci_dma(PCI_DEVICE(xhci), dcbaap + 8 * slotid);
2315 ictx = xhci_mask64(pictx);
2316 octx = xhci_mask64(poctx);
2317
2318 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2319 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2320
2321 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2322
2323 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) {
2324 DPRINTF("xhci: invalid input context control %08x %08x\n",
2325 ictl_ctx[0], ictl_ctx[1]);
2326 return CC_TRB_ERROR;
2327 }
2328
2329 xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx));
2330 xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx));
2331
2332 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2333 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2334
2335 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2336 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2337
2338 uport = xhci_lookup_uport(xhci, slot_ctx);
2339 if (uport == NULL) {
2340 DPRINTF("xhci: port not found\n");
2341 return CC_TRB_ERROR;
2342 }
2343 trace_usb_xhci_slot_address(slotid, uport->path);
2344
2345 dev = uport->dev;
2346 if (!dev || !dev->attached) {
2347 DPRINTF("xhci: port %s not connected\n", uport->path);
2348 return CC_USB_TRANSACTION_ERROR;
2349 }
2350
2351 for (i = 0; i < xhci->numslots; i++) {
2352 if (i == slotid-1) {
2353 continue;
2354 }
2355 if (xhci->slots[i].uport == uport) {
2356 DPRINTF("xhci: port %s already assigned to slot %d\n",
2357 uport->path, i+1);
2358 return CC_TRB_ERROR;
2359 }
2360 }
2361
2362 slot = &xhci->slots[slotid-1];
2363 slot->uport = uport;
2364 slot->ctx = octx;
2365
2366 if (bsr) {
2367 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT;
2368 } else {
2369 USBPacket p;
2370 uint8_t buf[1];
2371
2372 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid;
2373 usb_device_reset(dev);
2374 memset(&p, 0, sizeof(p));
2375 usb_packet_addbuf(&p, buf, sizeof(buf));
2376 usb_packet_setup(&p, USB_TOKEN_OUT,
2377 usb_ep_get(dev, USB_TOKEN_OUT, 0), 0,
2378 0, false, false);
2379 usb_device_handle_control(dev, &p,
2380 DeviceOutRequest | USB_REQ_SET_ADDRESS,
2381 slotid, 0, 0, NULL);
2382 assert(p.status != USB_RET_ASYNC);
2383 }
2384
2385 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx);
2386
2387 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2388 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2389 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2390 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2391
2392 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2393 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2394
2395 xhci->slots[slotid-1].addressed = 1;
2396 return res;
2397 }
2398
2399
2400 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid,
2401 uint64_t pictx, bool dc)
2402 {
2403 dma_addr_t ictx, octx;
2404 uint32_t ictl_ctx[2];
2405 uint32_t slot_ctx[4];
2406 uint32_t islot_ctx[4];
2407 uint32_t ep_ctx[5];
2408 int i;
2409 TRBCCode res;
2410
2411 trace_usb_xhci_slot_configure(slotid);
2412 assert(slotid >= 1 && slotid <= xhci->numslots);
2413
2414 ictx = xhci_mask64(pictx);
2415 octx = xhci->slots[slotid-1].ctx;
2416
2417 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2418 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2419
2420 if (dc) {
2421 for (i = 2; i <= 31; i++) {
2422 if (xhci->slots[slotid-1].eps[i-1]) {
2423 xhci_disable_ep(xhci, slotid, i);
2424 }
2425 }
2426
2427 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2428 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2429 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT;
2430 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2431 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2432 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2433
2434 return CC_SUCCESS;
2435 }
2436
2437 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2438
2439 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) {
2440 DPRINTF("xhci: invalid input context control %08x %08x\n",
2441 ictl_ctx[0], ictl_ctx[1]);
2442 return CC_TRB_ERROR;
2443 }
2444
2445 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2446 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2447
2448 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) {
2449 DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]);
2450 return CC_CONTEXT_STATE_ERROR;
2451 }
2452
2453 xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]);
2454
2455 for (i = 2; i <= 31; i++) {
2456 if (ictl_ctx[0] & (1<<i)) {
2457 xhci_disable_ep(xhci, slotid, i);
2458 }
2459 if (ictl_ctx[1] & (1<<i)) {
2460 xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx));
2461 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n",
2462 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2463 ep_ctx[3], ep_ctx[4]);
2464 xhci_disable_ep(xhci, slotid, i);
2465 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx);
2466 if (res != CC_SUCCESS) {
2467 return res;
2468 }
2469 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n",
2470 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
2471 ep_ctx[3], ep_ctx[4]);
2472 xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx));
2473 }
2474 }
2475
2476 res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]);
2477 if (res != CC_SUCCESS) {
2478 for (i = 2; i <= 31; i++) {
2479 if (ictl_ctx[1] & (1u << i)) {
2480 xhci_disable_ep(xhci, slotid, i);
2481 }
2482 }
2483 return res;
2484 }
2485
2486 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2487 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT;
2488 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT);
2489 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK <<
2490 SLOT_CONTEXT_ENTRIES_SHIFT);
2491 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2492 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2493
2494 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2495
2496 return CC_SUCCESS;
2497 }
2498
2499
2500 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid,
2501 uint64_t pictx)
2502 {
2503 dma_addr_t ictx, octx;
2504 uint32_t ictl_ctx[2];
2505 uint32_t iep0_ctx[5];
2506 uint32_t ep0_ctx[5];
2507 uint32_t islot_ctx[4];
2508 uint32_t slot_ctx[4];
2509
2510 trace_usb_xhci_slot_evaluate(slotid);
2511 assert(slotid >= 1 && slotid <= xhci->numslots);
2512
2513 ictx = xhci_mask64(pictx);
2514 octx = xhci->slots[slotid-1].ctx;
2515
2516 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
2517 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2518
2519 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx));
2520
2521 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) {
2522 DPRINTF("xhci: invalid input context control %08x %08x\n",
2523 ictl_ctx[0], ictl_ctx[1]);
2524 return CC_TRB_ERROR;
2525 }
2526
2527 if (ictl_ctx[1] & 0x1) {
2528 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx));
2529
2530 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2531 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]);
2532
2533 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2534
2535 slot_ctx[1] &= ~0xFFFF; /* max exit latency */
2536 slot_ctx[1] |= islot_ctx[1] & 0xFFFF;
2537 slot_ctx[2] &= ~0xFF00000; /* interrupter target */
2538 slot_ctx[2] |= islot_ctx[2] & 0xFF000000;
2539
2540 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2541 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2542
2543 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2544 }
2545
2546 if (ictl_ctx[1] & 0x2) {
2547 xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx));
2548
2549 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2550 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2],
2551 iep0_ctx[3], iep0_ctx[4]);
2552
2553 xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2554
2555 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/
2556 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000;
2557
2558 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2559 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2560
2561 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx));
2562 }
2563
2564 return CC_SUCCESS;
2565 }
2566
2567 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid)
2568 {
2569 uint32_t slot_ctx[4];
2570 dma_addr_t octx;
2571 int i;
2572
2573 trace_usb_xhci_slot_reset(slotid);
2574 assert(slotid >= 1 && slotid <= xhci->numslots);
2575
2576 octx = xhci->slots[slotid-1].ctx;
2577
2578 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2579
2580 for (i = 2; i <= 31; i++) {
2581 if (xhci->slots[slotid-1].eps[i-1]) {
2582 xhci_disable_ep(xhci, slotid, i);
2583 }
2584 }
2585
2586 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2587 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2588 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT;
2589 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2590 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2591 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx));
2592
2593 return CC_SUCCESS;
2594 }
2595
2596 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb)
2597 {
2598 unsigned int slotid;
2599 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK;
2600 if (slotid < 1 || slotid > xhci->numslots) {
2601 DPRINTF("xhci: bad slot id %d\n", slotid);
2602 event->ccode = CC_TRB_ERROR;
2603 return 0;
2604 } else if (!xhci->slots[slotid-1].enabled) {
2605 DPRINTF("xhci: slot id %d not enabled\n", slotid);
2606 event->ccode = CC_SLOT_NOT_ENABLED_ERROR;
2607 return 0;
2608 }
2609 return slotid;
2610 }
2611
2612 /* cleanup slot state on usb device detach */
2613 static void xhci_detach_slot(XHCIState *xhci, USBPort *uport)
2614 {
2615 int slot, ep;
2616
2617 for (slot = 0; slot < xhci->numslots; slot++) {
2618 if (xhci->slots[slot].uport == uport) {
2619 break;
2620 }
2621 }
2622 if (slot == xhci->numslots) {
2623 return;
2624 }
2625
2626 for (ep = 0; ep < 31; ep++) {
2627 if (xhci->slots[slot].eps[ep]) {
2628 xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0);
2629 }
2630 }
2631 xhci->slots[slot].uport = NULL;
2632 }
2633
2634 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx)
2635 {
2636 dma_addr_t ctx;
2637 uint8_t bw_ctx[xhci->numports+1];
2638
2639 DPRINTF("xhci_get_port_bandwidth()\n");
2640
2641 ctx = xhci_mask64(pctx);
2642
2643 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx);
2644
2645 /* TODO: actually implement real values here */
2646 bw_ctx[0] = 0;
2647 memset(&bw_ctx[1], 80, xhci->numports); /* 80% */
2648 pci_dma_write(PCI_DEVICE(xhci), ctx, bw_ctx, sizeof(bw_ctx));
2649
2650 return CC_SUCCESS;
2651 }
2652
2653 static uint32_t rotl(uint32_t v, unsigned count)
2654 {
2655 count &= 31;
2656 return (v << count) | (v >> (32 - count));
2657 }
2658
2659
2660 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo)
2661 {
2662 uint32_t val;
2663 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F));
2664 val += rotl(lo + 0x49434878, hi & 0x1F);
2665 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F);
2666 return ~val;
2667 }
2668
2669 static void xhci_via_challenge(XHCIState *xhci, uint64_t addr)
2670 {
2671 PCIDevice *pci_dev = PCI_DEVICE(xhci);
2672 uint32_t buf[8];
2673 uint32_t obuf[8];
2674 dma_addr_t paddr = xhci_mask64(addr);
2675
2676 pci_dma_read(pci_dev, paddr, &buf, 32);
2677
2678 memcpy(obuf, buf, sizeof(obuf));
2679
2680 if ((buf[0] & 0xff) == 2) {
2681 obuf[0] = 0x49932000 + 0x54dc200 * buf[2] + 0x7429b578 * buf[3];
2682 obuf[0] |= (buf[2] * buf[3]) & 0xff;
2683 obuf[1] = 0x0132bb37 + 0xe89 * buf[2] + 0xf09 * buf[3];
2684 obuf[2] = 0x0066c2e9 + 0x2091 * buf[2] + 0x19bd * buf[3];
2685 obuf[3] = 0xd5281342 + 0x2cc9691 * buf[2] + 0x2367662 * buf[3];
2686 obuf[4] = 0x0123c75c + 0x1595 * buf[2] + 0x19ec * buf[3];
2687 obuf[5] = 0x00f695de + 0x26fd * buf[2] + 0x3e9 * buf[3];
2688 obuf[6] = obuf[2] ^ obuf[3] ^ 0x29472956;
2689 obuf[7] = obuf[2] ^ obuf[3] ^ 0x65866593;
2690 }
2691
2692 pci_dma_write(pci_dev, paddr, &obuf, 32);
2693 }
2694
2695 static void xhci_process_commands(XHCIState *xhci)
2696 {
2697 XHCITRB trb;
2698 TRBType type;
2699 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS};
2700 dma_addr_t addr;
2701 unsigned int i, slotid = 0;
2702
2703 DPRINTF("xhci_process_commands()\n");
2704 if (!xhci_running(xhci)) {
2705 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n");
2706 return;
2707 }
2708
2709 xhci->crcr_low |= CRCR_CRR;
2710
2711 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) {
2712 event.ptr = addr;
2713 switch (type) {
2714 case CR_ENABLE_SLOT:
2715 for (i = 0; i < xhci->numslots; i++) {
2716 if (!xhci->slots[i].enabled) {
2717 break;
2718 }
2719 }
2720 if (i >= xhci->numslots) {
2721 DPRINTF("xhci: no device slots available\n");
2722 event.ccode = CC_NO_SLOTS_ERROR;
2723 } else {
2724 slotid = i+1;
2725 event.ccode = xhci_enable_slot(xhci, slotid);
2726 }
2727 break;
2728 case CR_DISABLE_SLOT:
2729 slotid = xhci_get_slot(xhci, &event, &trb);
2730 if (slotid) {
2731 event.ccode = xhci_disable_slot(xhci, slotid);
2732 }
2733 break;
2734 case CR_ADDRESS_DEVICE:
2735 slotid = xhci_get_slot(xhci, &event, &trb);
2736 if (slotid) {
2737 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter,
2738 trb.control & TRB_CR_BSR);
2739 }
2740 break;
2741 case CR_CONFIGURE_ENDPOINT:
2742 slotid = xhci_get_slot(xhci, &event, &trb);
2743 if (slotid) {
2744 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter,
2745 trb.control & TRB_CR_DC);
2746 }
2747 break;
2748 case CR_EVALUATE_CONTEXT:
2749 slotid = xhci_get_slot(xhci, &event, &trb);
2750 if (slotid) {
2751 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter);
2752 }
2753 break;
2754 case CR_STOP_ENDPOINT:
2755 slotid = xhci_get_slot(xhci, &event, &trb);
2756 if (slotid) {
2757 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2758 & TRB_CR_EPID_MASK;
2759 event.ccode = xhci_stop_ep(xhci, slotid, epid);
2760 }
2761 break;
2762 case CR_RESET_ENDPOINT:
2763 slotid = xhci_get_slot(xhci, &event, &trb);
2764 if (slotid) {
2765 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2766 & TRB_CR_EPID_MASK;
2767 event.ccode = xhci_reset_ep(xhci, slotid, epid);
2768 }
2769 break;
2770 case CR_SET_TR_DEQUEUE:
2771 slotid = xhci_get_slot(xhci, &event, &trb);
2772 if (slotid) {
2773 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2774 & TRB_CR_EPID_MASK;
2775 unsigned int streamid = (trb.status >> 16) & 0xffff;
2776 event.ccode = xhci_set_ep_dequeue(xhci, slotid,
2777 epid, streamid,
2778 trb.parameter);
2779 }
2780 break;
2781 case CR_RESET_DEVICE:
2782 slotid = xhci_get_slot(xhci, &event, &trb);
2783 if (slotid) {
2784 event.ccode = xhci_reset_slot(xhci, slotid);
2785 }
2786 break;
2787 case CR_GET_PORT_BANDWIDTH:
2788 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter);
2789 break;
2790 case CR_VENDOR_VIA_CHALLENGE_RESPONSE:
2791 xhci_via_challenge(xhci, trb.parameter);
2792 break;
2793 case CR_VENDOR_NEC_FIRMWARE_REVISION:
2794 event.type = 48; /* NEC reply */
2795 event.length = 0x3025;
2796 break;
2797 case CR_VENDOR_NEC_CHALLENGE_RESPONSE:
2798 {
2799 uint32_t chi = trb.parameter >> 32;
2800 uint32_t clo = trb.parameter;
2801 uint32_t val = xhci_nec_challenge(chi, clo);
2802 event.length = val & 0xFFFF;
2803 event.epid = val >> 16;
2804 slotid = val >> 24;
2805 event.type = 48; /* NEC reply */
2806 }
2807 break;
2808 default:
2809 trace_usb_xhci_unimplemented("command", type);
2810 event.ccode = CC_TRB_ERROR;
2811 break;
2812 }
2813 event.slotid = slotid;
2814 xhci_event(xhci, &event, 0);
2815 }
2816 }
2817
2818 static bool xhci_port_have_device(XHCIPort *port)
2819 {
2820 if (!port->uport->dev || !port->uport->dev->attached) {
2821 return false; /* no device present */
2822 }
2823 if (!((1 << port->uport->dev->speed) & port->speedmask)) {
2824 return false; /* speed mismatch */
2825 }
2826 return true;
2827 }
2828
2829 static void xhci_port_notify(XHCIPort *port, uint32_t bits)
2830 {
2831 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
2832 port->portnr << 24 };
2833
2834 if ((port->portsc & bits) == bits) {
2835 return;
2836 }
2837 trace_usb_xhci_port_notify(port->portnr, bits);
2838 port->portsc |= bits;
2839 if (!xhci_running(port->xhci)) {
2840 return;
2841 }
2842 xhci_event(port->xhci, &ev, 0);
2843 }
2844
2845 static void xhci_port_update(XHCIPort *port, int is_detach)
2846 {
2847 uint32_t pls = PLS_RX_DETECT;
2848
2849 port->portsc = PORTSC_PP;
2850 if (!is_detach && xhci_port_have_device(port)) {
2851 port->portsc |= PORTSC_CCS;
2852 switch (port->uport->dev->speed) {
2853 case USB_SPEED_LOW:
2854 port->portsc |= PORTSC_SPEED_LOW;
2855 pls = PLS_POLLING;
2856 break;
2857 case USB_SPEED_FULL:
2858 port->portsc |= PORTSC_SPEED_FULL;
2859 pls = PLS_POLLING;
2860 break;
2861 case USB_SPEED_HIGH:
2862 port->portsc |= PORTSC_SPEED_HIGH;
2863 pls = PLS_POLLING;
2864 break;
2865 case USB_SPEED_SUPER:
2866 port->portsc |= PORTSC_SPEED_SUPER;
2867 port->portsc |= PORTSC_PED;
2868 pls = PLS_U0;
2869 break;
2870 }
2871 }
2872 set_field(&port->portsc, pls, PORTSC_PLS);
2873 trace_usb_xhci_port_link(port->portnr, pls);
2874 xhci_port_notify(port, PORTSC_CSC);
2875 }
2876
2877 static void xhci_port_reset(XHCIPort *port, bool warm_reset)
2878 {
2879 trace_usb_xhci_port_reset(port->portnr, warm_reset);
2880
2881 if (!xhci_port_have_device(port)) {
2882 return;
2883 }
2884
2885 usb_device_reset(port->uport->dev);
2886
2887 switch (port->uport->dev->speed) {
2888 case USB_SPEED_SUPER:
2889 if (warm_reset) {
2890 port->portsc |= PORTSC_WRC;
2891 }
2892 /* fall through */
2893 case USB_SPEED_LOW:
2894 case USB_SPEED_FULL:
2895 case USB_SPEED_HIGH:
2896 set_field(&port->portsc, PLS_U0, PORTSC_PLS);
2897 trace_usb_xhci_port_link(port->portnr, PLS_U0);
2898 port->portsc |= PORTSC_PED;
2899 break;
2900 }
2901
2902 port->portsc &= ~PORTSC_PR;
2903 xhci_port_notify(port, PORTSC_PRC);
2904 }
2905
2906 static void xhci_reset(DeviceState *dev)
2907 {
2908 XHCIState *xhci = XHCI(dev);
2909 int i;
2910
2911 trace_usb_xhci_reset();
2912 if (!(xhci->usbsts & USBSTS_HCH)) {
2913 DPRINTF("xhci: reset while running!\n");
2914 }
2915
2916 xhci->usbcmd = 0;
2917 xhci->usbsts = USBSTS_HCH;
2918 xhci->dnctrl = 0;
2919 xhci->crcr_low = 0;
2920 xhci->crcr_high = 0;
2921 xhci->dcbaap_low = 0;
2922 xhci->dcbaap_high = 0;
2923 xhci->config = 0;
2924
2925 for (i = 0; i < xhci->numslots; i++) {
2926 xhci_disable_slot(xhci, i+1);
2927 }
2928
2929 for (i = 0; i < xhci->numports; i++) {
2930 xhci_port_update(xhci->ports + i, 0);
2931 }
2932
2933 for (i = 0; i < xhci->numintrs; i++) {
2934 xhci->intr[i].iman = 0;
2935 xhci->intr[i].imod = 0;
2936 xhci->intr[i].erstsz = 0;
2937 xhci->intr[i].erstba_low = 0;
2938 xhci->intr[i].erstba_high = 0;
2939 xhci->intr[i].erdp_low = 0;
2940 xhci->intr[i].erdp_high = 0;
2941 xhci->intr[i].msix_used = 0;
2942
2943 xhci->intr[i].er_ep_idx = 0;
2944 xhci->intr[i].er_pcs = 1;
2945 xhci->intr[i].er_full = 0;
2946 xhci->intr[i].ev_buffer_put = 0;
2947 xhci->intr[i].ev_buffer_get = 0;
2948 }
2949
2950 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
2951 xhci_mfwrap_update(xhci);
2952 }
2953
2954 static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size)
2955 {
2956 XHCIState *xhci = ptr;
2957 uint32_t ret;
2958
2959 switch (reg) {
2960 case 0x00: /* HCIVERSION, CAPLENGTH */
2961 ret = 0x01000000 | LEN_CAP;
2962 break;
2963 case 0x04: /* HCSPARAMS 1 */
2964 ret = ((xhci->numports_2+xhci->numports_3)<<24)
2965 | (xhci->numintrs<<8) | xhci->numslots;
2966 break;
2967 case 0x08: /* HCSPARAMS 2 */
2968 ret = 0x0000000f;
2969 break;
2970 case 0x0c: /* HCSPARAMS 3 */
2971 ret = 0x00000000;
2972 break;
2973 case 0x10: /* HCCPARAMS */
2974 if (sizeof(dma_addr_t) == 4) {
2975 ret = 0x00080000 | (xhci->max_pstreams_mask << 12);
2976 } else {
2977 ret = 0x00080001 | (xhci->max_pstreams_mask << 12);
2978 }
2979 break;
2980 case 0x14: /* DBOFF */
2981 ret = OFF_DOORBELL;
2982 break;
2983 case 0x18: /* RTSOFF */
2984 ret = OFF_RUNTIME;
2985 break;
2986
2987 /* extended capabilities */
2988 case 0x20: /* Supported Protocol:00 */
2989 ret = 0x02000402; /* USB 2.0 */
2990 break;
2991 case 0x24: /* Supported Protocol:04 */
2992 ret = 0x20425355; /* "USB " */
2993 break;
2994 case 0x28: /* Supported Protocol:08 */
2995 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
2996 ret = (xhci->numports_2<<8) | (xhci->numports_3+1);
2997 } else {
2998 ret = (xhci->numports_2<<8) | 1;
2999 }
3000 break;
3001 case 0x2c: /* Supported Protocol:0c */
3002 ret = 0x00000000; /* reserved */
3003 break;
3004 case 0x30: /* Supported Protocol:00 */
3005 ret = 0x03000002; /* USB 3.0 */
3006 break;
3007 case 0x34: /* Supported Protocol:04 */
3008 ret = 0x20425355; /* "USB " */
3009 break;
3010 case 0x38: /* Supported Protocol:08 */
3011 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3012 ret = (xhci->numports_3<<8) | 1;
3013 } else {
3014 ret = (xhci->numports_3<<8) | (xhci->numports_2+1);
3015 }
3016 break;
3017 case 0x3c: /* Supported Protocol:0c */
3018 ret = 0x00000000; /* reserved */
3019 break;
3020 default:
3021 trace_usb_xhci_unimplemented("cap read", reg);
3022 ret = 0;
3023 }
3024
3025 trace_usb_xhci_cap_read(reg, ret);
3026 return ret;
3027 }
3028
3029 static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size)
3030 {
3031 XHCIPort *port = ptr;
3032 uint32_t ret;
3033
3034 switch (reg) {
3035 case 0x00: /* PORTSC */
3036 ret = port->portsc;
3037 break;
3038 case 0x04: /* PORTPMSC */
3039 case 0x08: /* PORTLI */
3040 ret = 0;
3041 break;
3042 case 0x0c: /* reserved */
3043 default:
3044 trace_usb_xhci_unimplemented("port read", reg);
3045 ret = 0;
3046 }
3047
3048 trace_usb_xhci_port_read(port->portnr, reg, ret);
3049 return ret;
3050 }
3051
3052 static void xhci_port_write(void *ptr, hwaddr reg,
3053 uint64_t val, unsigned size)
3054 {
3055 XHCIPort *port = ptr;
3056 uint32_t portsc, notify;
3057
3058 trace_usb_xhci_port_write(port->portnr, reg, val);
3059
3060 switch (reg) {
3061 case 0x00: /* PORTSC */
3062 /* write-1-to-start bits */
3063 if (val & PORTSC_WPR) {
3064 xhci_port_reset(port, true);
3065 break;
3066 }
3067 if (val & PORTSC_PR) {
3068 xhci_port_reset(port, false);
3069 break;
3070 }
3071
3072 portsc = port->portsc;
3073 notify = 0;
3074 /* write-1-to-clear bits*/
3075 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC|
3076 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
3077 if (val & PORTSC_LWS) {
3078 /* overwrite PLS only when LWS=1 */
3079 uint32_t old_pls = get_field(port->portsc, PORTSC_PLS);
3080 uint32_t new_pls = get_field(val, PORTSC_PLS);
3081 switch (new_pls) {
3082 case PLS_U0:
3083 if (old_pls != PLS_U0) {
3084 set_field(&portsc, new_pls, PORTSC_PLS);
3085 trace_usb_xhci_port_link(port->portnr, new_pls);
3086 notify = PORTSC_PLC;
3087 }
3088 break;
3089 case PLS_U3:
3090 if (old_pls < PLS_U3) {
3091 set_field(&portsc, new_pls, PORTSC_PLS);
3092 trace_usb_xhci_port_link(port->portnr, new_pls);
3093 }
3094 break;
3095 case PLS_RESUME:
3096 /* windows does this for some reason, don't spam stderr */
3097 break;
3098 default:
3099 DPRINTF("%s: ignore pls write (old %d, new %d)\n",
3100 __func__, old_pls, new_pls);
3101 break;
3102 }
3103 }
3104 /* read/write bits */
3105 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
3106 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE));
3107 port->portsc = portsc;
3108 if (notify) {
3109 xhci_port_notify(port, notify);
3110 }
3111 break;
3112 case 0x04: /* PORTPMSC */
3113 case 0x08: /* PORTLI */
3114 default:
3115 trace_usb_xhci_unimplemented("port write", reg);
3116 }
3117 }
3118
3119 static uint64_t xhci_oper_read(void *ptr, hwaddr reg, unsigned size)
3120 {
3121 XHCIState *xhci = ptr;
3122 uint32_t ret;
3123
3124 switch (reg) {
3125 case 0x00: /* USBCMD */
3126 ret = xhci->usbcmd;
3127 break;
3128 case 0x04: /* USBSTS */
3129 ret = xhci->usbsts;
3130 break;
3131 case 0x08: /* PAGESIZE */
3132 ret = 1; /* 4KiB */
3133 break;
3134 case 0x14: /* DNCTRL */
3135 ret = xhci->dnctrl;
3136 break;
3137 case 0x18: /* CRCR low */
3138 ret = xhci->crcr_low & ~0xe;
3139 break;
3140 case 0x1c: /* CRCR high */
3141 ret = xhci->crcr_high;
3142 break;
3143 case 0x30: /* DCBAAP low */
3144 ret = xhci->dcbaap_low;
3145 break;
3146 case 0x34: /* DCBAAP high */
3147 ret = xhci->dcbaap_high;
3148 break;
3149 case 0x38: /* CONFIG */
3150 ret = xhci->config;
3151 break;
3152 default:
3153 trace_usb_xhci_unimplemented("oper read", reg);
3154 ret = 0;
3155 }
3156
3157 trace_usb_xhci_oper_read(reg, ret);
3158 return ret;
3159 }
3160
3161 static void xhci_oper_write(void *ptr, hwaddr reg,
3162 uint64_t val, unsigned size)
3163 {
3164 XHCIState *xhci = ptr;
3165 DeviceState *d = DEVICE(ptr);
3166
3167 trace_usb_xhci_oper_write(reg, val);
3168
3169 switch (reg) {
3170 case 0x00: /* USBCMD */
3171 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) {
3172 xhci_run(xhci);
3173 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) {
3174 xhci_stop(xhci);
3175 }
3176 if (val & USBCMD_CSS) {
3177 /* save state */
3178 xhci->usbsts &= ~USBSTS_SRE;
3179 }
3180 if (val & USBCMD_CRS) {
3181 /* restore state */
3182 xhci->usbsts |= USBSTS_SRE;
3183 }
3184 xhci->usbcmd = val & 0xc0f;
3185 xhci_mfwrap_update(xhci);
3186 if (val & USBCMD_HCRST) {
3187 xhci_reset(d);
3188 }
3189 xhci_intx_update(xhci);
3190 break;
3191
3192 case 0x04: /* USBSTS */
3193 /* these bits are write-1-to-clear */
3194 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE));
3195 xhci_intx_update(xhci);
3196 break;
3197
3198 case 0x14: /* DNCTRL */
3199 xhci->dnctrl = val & 0xffff;
3200 break;
3201 case 0x18: /* CRCR low */
3202 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR);
3203 break;
3204 case 0x1c: /* CRCR high */
3205 xhci->crcr_high = val;
3206 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) {
3207 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED};
3208 xhci->crcr_low &= ~CRCR_CRR;
3209 xhci_event(xhci, &event, 0);
3210 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low);
3211 } else {
3212 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val);
3213 xhci_ring_init(xhci, &xhci->cmd_ring, base);
3214 }
3215 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS);
3216 break;
3217 case 0x30: /* DCBAAP low */
3218 xhci->dcbaap_low = val & 0xffffffc0;
3219 break;
3220 case 0x34: /* DCBAAP high */
3221 xhci->dcbaap_high = val;
3222 break;
3223 case 0x38: /* CONFIG */
3224 xhci->config = val & 0xff;
3225 break;
3226 default:
3227 trace_usb_xhci_unimplemented("oper write", reg);
3228 }
3229 }
3230
3231 static uint64_t xhci_runtime_read(void *ptr, hwaddr reg,
3232 unsigned size)
3233 {
3234 XHCIState *xhci = ptr;
3235 uint32_t ret = 0;
3236
3237 if (reg < 0x20) {
3238 switch (reg) {
3239 case 0x00: /* MFINDEX */
3240 ret = xhci_mfindex_get(xhci) & 0x3fff;
3241 break;
3242 default:
3243 trace_usb_xhci_unimplemented("runtime read", reg);
3244 break;
3245 }
3246 } else {
3247 int v = (reg - 0x20) / 0x20;
3248 XHCIInterrupter *intr = &xhci->intr[v];
3249 switch (reg & 0x1f) {
3250 case 0x00: /* IMAN */
3251 ret = intr->iman;
3252 break;
3253 case 0x04: /* IMOD */
3254 ret = intr->imod;
3255 break;
3256 case 0x08: /* ERSTSZ */
3257 ret = intr->erstsz;
3258 break;
3259 case 0x10: /* ERSTBA low */
3260 ret = intr->erstba_low;
3261 break;
3262 case 0x14: /* ERSTBA high */
3263 ret = intr->erstba_high;
3264 break;
3265 case 0x18: /* ERDP low */
3266 ret = intr->erdp_low;
3267 break;
3268 case 0x1c: /* ERDP high */
3269 ret = intr->erdp_high;
3270 break;
3271 }
3272 }
3273
3274 trace_usb_xhci_runtime_read(reg, ret);
3275 return ret;
3276 }
3277
3278 static void xhci_runtime_write(void *ptr, hwaddr reg,
3279 uint64_t val, unsigned size)
3280 {
3281 XHCIState *xhci = ptr;
3282 int v = (reg - 0x20) / 0x20;
3283 XHCIInterrupter *intr = &xhci->intr[v];
3284 trace_usb_xhci_runtime_write(reg, val);
3285
3286 if (reg < 0x20) {
3287 trace_usb_xhci_unimplemented("runtime write", reg);
3288 return;
3289 }
3290
3291 switch (reg & 0x1f) {
3292 case 0x00: /* IMAN */
3293 if (val & IMAN_IP) {
3294 intr->iman &= ~IMAN_IP;
3295 }
3296 intr->iman &= ~IMAN_IE;
3297 intr->iman |= val & IMAN_IE;
3298 if (v == 0) {
3299 xhci_intx_update(xhci);
3300 }
3301 xhci_msix_update(xhci, v);
3302 break;
3303 case 0x04: /* IMOD */
3304 intr->imod = val;
3305 break;
3306 case 0x08: /* ERSTSZ */
3307 intr->erstsz = val & 0xffff;
3308 break;
3309 case 0x10: /* ERSTBA low */
3310 /* XXX NEC driver bug: it doesn't align this to 64 bytes
3311 intr->erstba_low = val & 0xffffffc0; */
3312 intr->erstba_low = val & 0xfffffff0;
3313 break;
3314 case 0x14: /* ERSTBA high */
3315 intr->erstba_high = val;
3316 xhci_er_reset(xhci, v);
3317 break;
3318 case 0x18: /* ERDP low */
3319 if (val & ERDP_EHB) {
3320 intr->erdp_low &= ~ERDP_EHB;
3321 }
3322 intr->erdp_low = (val & ~ERDP_EHB) | (intr->erdp_low & ERDP_EHB);
3323 break;
3324 case 0x1c: /* ERDP high */
3325 intr->erdp_high = val;
3326 xhci_events_update(xhci, v);
3327 break;
3328 default:
3329 trace_usb_xhci_unimplemented("oper write", reg);
3330 }
3331 }
3332
3333 static uint64_t xhci_doorbell_read(void *ptr, hwaddr reg,
3334 unsigned size)
3335 {
3336 /* doorbells always read as 0 */
3337 trace_usb_xhci_doorbell_read(reg, 0);
3338 return 0;
3339 }
3340
3341 static void xhci_doorbell_write(void *ptr, hwaddr reg,
3342 uint64_t val, unsigned size)
3343 {
3344 XHCIState *xhci = ptr;
3345 unsigned int epid, streamid;
3346
3347 trace_usb_xhci_doorbell_write(reg, val);
3348
3349 if (!xhci_running(xhci)) {
3350 DPRINTF("xhci: wrote doorbell while xHC stopped or paused\n");
3351 return;
3352 }
3353
3354 reg >>= 2;
3355
3356 if (reg == 0) {
3357 if (val == 0) {
3358 xhci_process_commands(xhci);
3359 } else {
3360 DPRINTF("xhci: bad doorbell 0 write: 0x%x\n",
3361 (uint32_t)val);
3362 }
3363 } else {
3364 epid = val & 0xff;
3365 streamid = (val >> 16) & 0xffff;
3366 if (reg > xhci->numslots) {
3367 DPRINTF("xhci: bad doorbell %d\n", (int)reg);
3368 } else if (epid > 31) {
3369 DPRINTF("xhci: bad doorbell %d write: 0x%x\n",
3370 (int)reg, (uint32_t)val);
3371 } else {
3372 xhci_kick_ep(xhci, reg, epid, streamid);
3373 }
3374 }
3375 }
3376
3377 static void xhci_cap_write(void *opaque, hwaddr addr, uint64_t val,
3378 unsigned width)
3379 {
3380 /* nothing */
3381 }
3382
3383 static const MemoryRegionOps xhci_cap_ops = {
3384 .read = xhci_cap_read,
3385 .write = xhci_cap_write,
3386 .valid.min_access_size = 1,
3387 .valid.max_access_size = 4,
3388 .impl.min_access_size = 4,
3389 .impl.max_access_size = 4,
3390 .endianness = DEVICE_LITTLE_ENDIAN,
3391 };
3392
3393 static const MemoryRegionOps xhci_oper_ops = {
3394 .read = xhci_oper_read,
3395 .write = xhci_oper_write,
3396 .valid.min_access_size = 4,
3397 .valid.max_access_size = 4,
3398 .endianness = DEVICE_LITTLE_ENDIAN,
3399 };
3400
3401 static const MemoryRegionOps xhci_port_ops = {
3402 .read = xhci_port_read,
3403 .write = xhci_port_write,
3404 .valid.min_access_size = 4,
3405 .valid.max_access_size = 4,
3406 .endianness = DEVICE_LITTLE_ENDIAN,
3407 };
3408
3409 static const MemoryRegionOps xhci_runtime_ops = {
3410 .read = xhci_runtime_read,
3411 .write = xhci_runtime_write,
3412 .valid.min_access_size = 4,
3413 .valid.max_access_size = 4,
3414 .endianness = DEVICE_LITTLE_ENDIAN,
3415 };
3416
3417 static const MemoryRegionOps xhci_doorbell_ops = {
3418 .read = xhci_doorbell_read,
3419 .write = xhci_doorbell_write,
3420 .valid.min_access_size = 4,
3421 .valid.max_access_size = 4,
3422 .endianness = DEVICE_LITTLE_ENDIAN,
3423 };
3424
3425 static void xhci_attach(USBPort *usbport)
3426 {
3427 XHCIState *xhci = usbport->opaque;
3428 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3429
3430 xhci_port_update(port, 0);
3431 }
3432
3433 static void xhci_detach(USBPort *usbport)
3434 {
3435 XHCIState *xhci = usbport->opaque;
3436 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3437
3438 xhci_detach_slot(xhci, usbport);
3439 xhci_port_update(port, 1);
3440 }
3441
3442 static void xhci_wakeup(USBPort *usbport)
3443 {
3444 XHCIState *xhci = usbport->opaque;
3445 XHCIPort *port = xhci_lookup_port(xhci, usbport);
3446
3447 if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
3448 return;
3449 }
3450 set_field(&port->portsc, PLS_RESUME, PORTSC_PLS);
3451 xhci_port_notify(port, PORTSC_PLC);
3452 }
3453
3454 static void xhci_complete(USBPort *port, USBPacket *packet)
3455 {
3456 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
3457
3458 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
3459 xhci_ep_nuke_one_xfer(xfer, 0);
3460 return;
3461 }
3462 xhci_complete_packet(xfer);
3463 xhci_kick_ep(xfer->xhci, xfer->slotid, xfer->epid, xfer->streamid);
3464 }
3465
3466 static void xhci_child_detach(USBPort *uport, USBDevice *child)
3467 {
3468 USBBus *bus = usb_bus_from_device(child);
3469 XHCIState *xhci = container_of(bus, XHCIState, bus);
3470
3471 xhci_detach_slot(xhci, child->port);
3472 }
3473
3474 static USBPortOps xhci_uport_ops = {
3475 .attach = xhci_attach,
3476 .detach = xhci_detach,
3477 .wakeup = xhci_wakeup,
3478 .complete = xhci_complete,
3479 .child_detach = xhci_child_detach,
3480 };
3481
3482 static int xhci_find_epid(USBEndpoint *ep)
3483 {
3484 if (ep->nr == 0) {
3485 return 1;
3486 }
3487 if (ep->pid == USB_TOKEN_IN) {
3488 return ep->nr * 2 + 1;
3489 } else {
3490 return ep->nr * 2;
3491 }
3492 }
3493
3494 static USBEndpoint *xhci_epid_to_usbep(XHCIState *xhci,
3495 unsigned int slotid, unsigned int epid)
3496 {
3497 assert(slotid >= 1 && slotid <= xhci->numslots);
3498
3499 if (!xhci->slots[slotid - 1].uport) {
3500 return NULL;
3501 }
3502
3503 return usb_ep_get(xhci->slots[slotid - 1].uport->dev,
3504 (epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT, epid >> 1);
3505 }
3506
3507 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep,
3508 unsigned int stream)
3509 {
3510 XHCIState *xhci = container_of(bus, XHCIState, bus);
3511 int slotid;
3512
3513 DPRINTF("%s\n", __func__);
3514 slotid = ep->dev->addr;
3515 if (slotid == 0 || !xhci->slots[slotid-1].enabled) {
3516 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr);
3517 return;
3518 }
3519 xhci_kick_ep(xhci, slotid, xhci_find_epid(ep), stream);
3520 }
3521
3522 static USBBusOps xhci_bus_ops = {
3523 .wakeup_endpoint = xhci_wakeup_endpoint,
3524 };
3525
3526 static void usb_xhci_init(XHCIState *xhci)
3527 {
3528 DeviceState *dev = DEVICE(xhci);
3529 XHCIPort *port;
3530 int i, usbports, speedmask;
3531
3532 xhci->usbsts = USBSTS_HCH;
3533
3534 if (xhci->numports_2 > MAXPORTS_2) {
3535 xhci->numports_2 = MAXPORTS_2;
3536 }
3537 if (xhci->numports_3 > MAXPORTS_3) {
3538 xhci->numports_3 = MAXPORTS_3;
3539 }
3540 usbports = MAX(xhci->numports_2, xhci->numports_3);
3541 xhci->numports = xhci->numports_2 + xhci->numports_3;
3542
3543 usb_bus_new(&xhci->bus, sizeof(xhci->bus), &xhci_bus_ops, dev);
3544
3545 for (i = 0; i < usbports; i++) {
3546 speedmask = 0;
3547 if (i < xhci->numports_2) {
3548 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3549 port = &xhci->ports[i + xhci->numports_3];
3550 port->portnr = i + 1 + xhci->numports_3;
3551 } else {
3552 port = &xhci->ports[i];
3553 port->portnr = i + 1;
3554 }
3555 port->uport = &xhci->uports[i];
3556 port->speedmask =
3557 USB_SPEED_MASK_LOW |
3558 USB_SPEED_MASK_FULL |
3559 USB_SPEED_MASK_HIGH;
3560 snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1);
3561 speedmask |= port->speedmask;
3562 }
3563 if (i < xhci->numports_3) {
3564 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) {
3565 port = &xhci->ports[i];
3566 port->portnr = i + 1;
3567 } else {
3568 port = &xhci->ports[i + xhci->numports_2];
3569 port->portnr = i + 1 + xhci->numports_2;
3570 }
3571 port->uport = &xhci->uports[i];
3572 port->speedmask = USB_SPEED_MASK_SUPER;
3573 snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1);
3574 speedmask |= port->speedmask;
3575 }
3576 usb_register_port(&xhci->bus, &xhci->uports[i], xhci, i,
3577 &xhci_uport_ops, speedmask);
3578 }
3579 }
3580
3581 static void usb_xhci_realize(struct PCIDevice *dev, Error **errp)
3582 {
3583 int i, ret;
3584
3585 XHCIState *xhci = XHCI(dev);
3586
3587 dev->config[PCI_CLASS_PROG] = 0x30; /* xHCI */
3588 dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin 1 */
3589 dev->config[PCI_CACHE_LINE_SIZE] = 0x10;
3590 dev->config[0x60] = 0x30; /* release number */
3591
3592 usb_xhci_init(xhci);
3593
3594 if (xhci->numintrs > MAXINTRS) {
3595 xhci->numintrs = MAXINTRS;
3596 }
3597 while (xhci->numintrs & (xhci->numintrs - 1)) { /* ! power of 2 */
3598 xhci->numintrs++;
3599 }
3600 if (xhci->numintrs < 1) {
3601 xhci->numintrs = 1;
3602 }
3603 if (xhci->numslots > MAXSLOTS) {
3604 xhci->numslots = MAXSLOTS;
3605 }
3606 if (xhci->numslots < 1) {
3607 xhci->numslots = 1;
3608 }
3609 if (xhci_get_flag(xhci, XHCI_FLAG_ENABLE_STREAMS)) {
3610 xhci->max_pstreams_mask = 7; /* == 256 primary streams */
3611 } else {
3612 xhci->max_pstreams_mask = 0;
3613 }
3614
3615 xhci->mfwrap_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_mfwrap_timer, xhci);
3616
3617 memory_region_init(&xhci->mem, OBJECT(xhci), "xhci", LEN_REGS);
3618 memory_region_init_io(&xhci->mem_cap, OBJECT(xhci), &xhci_cap_ops, xhci,
3619 "capabilities", LEN_CAP);
3620 memory_region_init_io(&xhci->mem_oper, OBJECT(xhci), &xhci_oper_ops, xhci,
3621 "operational", 0x400);
3622 memory_region_init_io(&xhci->mem_runtime, OBJECT(xhci), &xhci_runtime_ops, xhci,
3623 "runtime", LEN_RUNTIME);
3624 memory_region_init_io(&xhci->mem_doorbell, OBJECT(xhci), &xhci_doorbell_ops, xhci,
3625 "doorbell", LEN_DOORBELL);
3626
3627 memory_region_add_subregion(&xhci->mem, 0, &xhci->mem_cap);
3628 memory_region_add_subregion(&xhci->mem, OFF_OPER, &xhci->mem_oper);
3629 memory_region_add_subregion(&xhci->mem, OFF_RUNTIME, &xhci->mem_runtime);
3630 memory_region_add_subregion(&xhci->mem, OFF_DOORBELL, &xhci->mem_doorbell);
3631
3632 for (i = 0; i < xhci->numports; i++) {
3633 XHCIPort *port = &xhci->ports[i];
3634 uint32_t offset = OFF_OPER + 0x400 + 0x10 * i;
3635 port->xhci = xhci;
3636 memory_region_init_io(&port->mem, OBJECT(xhci), &xhci_port_ops, port,
3637 port->name, 0x10);
3638 memory_region_add_subregion(&xhci->mem, offset, &port->mem);
3639 }
3640
3641 pci_register_bar(dev, 0,
3642 PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64,
3643 &xhci->mem);
3644
3645 if (pci_bus_is_express(dev->bus) ||
3646 xhci_get_flag(xhci, XHCI_FLAG_FORCE_PCIE_ENDCAP)) {
3647 ret = pcie_endpoint_cap_init(dev, 0xa0);
3648 assert(ret >= 0);
3649 }
3650
3651 if (xhci_get_flag(xhci, XHCI_FLAG_USE_MSI)) {
3652 msi_init(dev, 0x70, xhci->numintrs, true, false);
3653 }
3654 if (xhci_get_flag(xhci, XHCI_FLAG_USE_MSI_X)) {
3655 msix_init(dev, xhci->numintrs,
3656 &xhci->mem, 0, OFF_MSIX_TABLE,
3657 &xhci->mem, 0, OFF_MSIX_PBA,
3658 0x90);
3659 }
3660 }
3661
3662 static void usb_xhci_exit(PCIDevice *dev)
3663 {
3664 int i;
3665 XHCIState *xhci = XHCI(dev);
3666
3667 trace_usb_xhci_exit();
3668
3669 for (i = 0; i < xhci->numslots; i++) {
3670 xhci_disable_slot(xhci, i + 1);
3671 }
3672
3673 if (xhci->mfwrap_timer) {
3674 timer_del(xhci->mfwrap_timer);
3675 timer_free(xhci->mfwrap_timer);
3676 xhci->mfwrap_timer = NULL;
3677 }
3678
3679 memory_region_del_subregion(&xhci->mem, &xhci->mem_cap);
3680 memory_region_del_subregion(&xhci->mem, &xhci->mem_oper);
3681 memory_region_del_subregion(&xhci->mem, &xhci->mem_runtime);
3682 memory_region_del_subregion(&xhci->mem, &xhci->mem_doorbell);
3683
3684 for (i = 0; i < xhci->numports; i++) {
3685 XHCIPort *port = &xhci->ports[i];
3686 memory_region_del_subregion(&xhci->mem, &port->mem);
3687 }
3688
3689 /* destroy msix memory region */
3690 if (dev->msix_table && dev->msix_pba
3691 && dev->msix_entry_used) {
3692 memory_region_del_subregion(&xhci->mem, &dev->msix_table_mmio);
3693 memory_region_del_subregion(&xhci->mem, &dev->msix_pba_mmio);
3694 }
3695
3696 usb_bus_release(&xhci->bus);
3697 }
3698
3699 static int usb_xhci_post_load(void *opaque, int version_id)
3700 {
3701 XHCIState *xhci = opaque;
3702 PCIDevice *pci_dev = PCI_DEVICE(xhci);
3703 XHCISlot *slot;
3704 XHCIEPContext *epctx;
3705 dma_addr_t dcbaap, pctx;
3706 uint32_t slot_ctx[4];
3707 uint32_t ep_ctx[5];
3708 int slotid, epid, state, intr;
3709
3710 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
3711
3712 for (slotid = 1; slotid <= xhci->numslots; slotid++) {
3713 slot = &xhci->slots[slotid-1];
3714 if (!slot->addressed) {
3715 continue;
3716 }
3717 slot->ctx =
3718 xhci_mask64(ldq_le_pci_dma(pci_dev, dcbaap + 8 * slotid));
3719 xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx));
3720 slot->uport = xhci_lookup_uport(xhci, slot_ctx);
3721 if (!slot->uport) {
3722 /* should not happen, but may trigger on guest bugs */
3723 slot->enabled = 0;
3724 slot->addressed = 0;
3725 continue;
3726 }
3727 assert(slot->uport && slot->uport->dev);
3728
3729 for (epid = 1; epid <= 31; epid++) {
3730 pctx = slot->ctx + 32 * epid;
3731 xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx));
3732 state = ep_ctx[0] & EP_STATE_MASK;
3733 if (state == EP_DISABLED) {
3734 continue;
3735 }
3736 epctx = xhci_alloc_epctx(xhci, slotid, epid);
3737 slot->eps[epid-1] = epctx;
3738 xhci_init_epctx(epctx, pctx, ep_ctx);
3739 epctx->state = state;
3740 if (state == EP_RUNNING) {
3741 /* kick endpoint after vmload is finished */
3742 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
3743 }
3744 }
3745 }
3746
3747 for (intr = 0; intr < xhci->numintrs; intr++) {
3748 if (xhci->intr[intr].msix_used) {
3749 msix_vector_use(pci_dev, intr);
3750 } else {
3751 msix_vector_unuse(pci_dev, intr);
3752 }
3753 }
3754
3755 return 0;
3756 }
3757
3758 static const VMStateDescription vmstate_xhci_ring = {
3759 .name = "xhci-ring",
3760 .version_id = 1,
3761 .fields = (VMStateField[]) {
3762 VMSTATE_UINT64(dequeue, XHCIRing),
3763 VMSTATE_BOOL(ccs, XHCIRing),
3764 VMSTATE_END_OF_LIST()
3765 }
3766 };
3767
3768 static const VMStateDescription vmstate_xhci_port = {
3769 .name = "xhci-port",
3770 .version_id = 1,
3771 .fields = (VMStateField[]) {
3772 VMSTATE_UINT32(portsc, XHCIPort),
3773 VMSTATE_END_OF_LIST()
3774 }
3775 };
3776
3777 static const VMStateDescription vmstate_xhci_slot = {
3778 .name = "xhci-slot",
3779 .version_id = 1,
3780 .fields = (VMStateField[]) {
3781 VMSTATE_BOOL(enabled, XHCISlot),
3782 VMSTATE_BOOL(addressed, XHCISlot),
3783 VMSTATE_END_OF_LIST()
3784 }
3785 };
3786
3787 static const VMStateDescription vmstate_xhci_event = {
3788 .name = "xhci-event",
3789 .version_id = 1,
3790 .fields = (VMStateField[]) {
3791 VMSTATE_UINT32(type, XHCIEvent),
3792 VMSTATE_UINT32(ccode, XHCIEvent),
3793 VMSTATE_UINT64(ptr, XHCIEvent),
3794 VMSTATE_UINT32(length, XHCIEvent),
3795 VMSTATE_UINT32(flags, XHCIEvent),
3796 VMSTATE_UINT8(slotid, XHCIEvent),
3797 VMSTATE_UINT8(epid, XHCIEvent),
3798 VMSTATE_END_OF_LIST()
3799 }
3800 };
3801
3802 static bool xhci_er_full(void *opaque, int version_id)
3803 {
3804 struct XHCIInterrupter *intr = opaque;
3805 return intr->er_full;
3806 }
3807
3808 static const VMStateDescription vmstate_xhci_intr = {
3809 .name = "xhci-intr",
3810 .version_id = 1,
3811 .fields = (VMStateField[]) {
3812 /* registers */
3813 VMSTATE_UINT32(iman, XHCIInterrupter),
3814 VMSTATE_UINT32(imod, XHCIInterrupter),
3815 VMSTATE_UINT32(erstsz, XHCIInterrupter),
3816 VMSTATE_UINT32(erstba_low, XHCIInterrupter),
3817 VMSTATE_UINT32(erstba_high, XHCIInterrupter),
3818 VMSTATE_UINT32(erdp_low, XHCIInterrupter),
3819 VMSTATE_UINT32(erdp_high, XHCIInterrupter),
3820
3821 /* state */
3822 VMSTATE_BOOL(msix_used, XHCIInterrupter),
3823 VMSTATE_BOOL(er_pcs, XHCIInterrupter),
3824 VMSTATE_UINT64(er_start, XHCIInterrupter),
3825 VMSTATE_UINT32(er_size, XHCIInterrupter),
3826 VMSTATE_UINT32(er_ep_idx, XHCIInterrupter),
3827
3828 /* event queue (used if ring is full) */
3829 VMSTATE_BOOL(er_full, XHCIInterrupter),
3830 VMSTATE_UINT32_TEST(ev_buffer_put, XHCIInterrupter, xhci_er_full),
3831 VMSTATE_UINT32_TEST(ev_buffer_get, XHCIInterrupter, xhci_er_full),
3832 VMSTATE_STRUCT_ARRAY_TEST(ev_buffer, XHCIInterrupter, EV_QUEUE,
3833 xhci_er_full, 1,
3834 vmstate_xhci_event, XHCIEvent),
3835
3836 VMSTATE_END_OF_LIST()
3837 }
3838 };
3839
3840 static const VMStateDescription vmstate_xhci = {
3841 .name = "xhci",
3842 .version_id = 1,
3843 .post_load = usb_xhci_post_load,
3844 .fields = (VMStateField[]) {
3845 VMSTATE_PCIE_DEVICE(parent_obj, XHCIState),
3846 VMSTATE_MSIX(parent_obj, XHCIState),
3847
3848 VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1,
3849 vmstate_xhci_port, XHCIPort),
3850 VMSTATE_STRUCT_VARRAY_UINT32(slots, XHCIState, numslots, 1,
3851 vmstate_xhci_slot, XHCISlot),
3852 VMSTATE_STRUCT_VARRAY_UINT32(intr, XHCIState, numintrs, 1,
3853 vmstate_xhci_intr, XHCIInterrupter),
3854
3855 /* Operational Registers */
3856 VMSTATE_UINT32(usbcmd, XHCIState),
3857 VMSTATE_UINT32(usbsts, XHCIState),
3858 VMSTATE_UINT32(dnctrl, XHCIState),
3859 VMSTATE_UINT32(crcr_low, XHCIState),
3860 VMSTATE_UINT32(crcr_high, XHCIState),
3861 VMSTATE_UINT32(dcbaap_low, XHCIState),
3862 VMSTATE_UINT32(dcbaap_high, XHCIState),
3863 VMSTATE_UINT32(config, XHCIState),
3864
3865 /* Runtime Registers & state */
3866 VMSTATE_INT64(mfindex_start, XHCIState),
3867 VMSTATE_TIMER_PTR(mfwrap_timer, XHCIState),
3868 VMSTATE_STRUCT(cmd_ring, XHCIState, 1, vmstate_xhci_ring, XHCIRing),
3869
3870 VMSTATE_END_OF_LIST()
3871 }
3872 };
3873
3874 static Property xhci_properties[] = {
3875 DEFINE_PROP_BIT("msi", XHCIState, flags, XHCI_FLAG_USE_MSI, true),
3876 DEFINE_PROP_BIT("msix", XHCIState, flags, XHCI_FLAG_USE_MSI_X, true),
3877 DEFINE_PROP_BIT("superspeed-ports-first",
3878 XHCIState, flags, XHCI_FLAG_SS_FIRST, true),
3879 DEFINE_PROP_BIT("force-pcie-endcap", XHCIState, flags,
3880 XHCI_FLAG_FORCE_PCIE_ENDCAP, false),
3881 DEFINE_PROP_BIT("streams", XHCIState, flags,
3882 XHCI_FLAG_ENABLE_STREAMS, true),
3883 DEFINE_PROP_UINT32("intrs", XHCIState, numintrs, MAXINTRS),
3884 DEFINE_PROP_UINT32("slots", XHCIState, numslots, MAXSLOTS),
3885 DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4),
3886 DEFINE_PROP_UINT32("p3", XHCIState, numports_3, 4),
3887 DEFINE_PROP_END_OF_LIST(),
3888 };
3889
3890 static void xhci_class_init(ObjectClass *klass, void *data)
3891 {
3892 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
3893 DeviceClass *dc = DEVICE_CLASS(klass);
3894
3895 dc->vmsd = &vmstate_xhci;
3896 dc->props = xhci_properties;
3897 dc->reset = xhci_reset;
3898 set_bit(DEVICE_CATEGORY_USB, dc->categories);
3899 k->realize = usb_xhci_realize;
3900 k->exit = usb_xhci_exit;
3901 k->vendor_id = PCI_VENDOR_ID_NEC;
3902 k->device_id = PCI_DEVICE_ID_NEC_UPD720200;
3903 k->class_id = PCI_CLASS_SERIAL_USB;
3904 k->revision = 0x03;
3905 k->is_express = 1;
3906 }
3907
3908 static const TypeInfo xhci_info = {
3909 .name = TYPE_XHCI,
3910 .parent = TYPE_PCI_DEVICE,
3911 .instance_size = sizeof(XHCIState),
3912 .class_init = xhci_class_init,
3913 };
3914
3915 static void xhci_register_types(void)
3916 {
3917 type_register_static(&xhci_info);
3918 }
3919
3920 type_init(xhci_register_types)
QEmu