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xhci: trace: irq + events
[qemu/kevin.git] / hw / usb / hcd-xhci.c
blob689088866c4043502a16c60a4c7b8cc5c7253b29
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 "hw/hw.h"
22 #include "qemu-timer.h"
23 #include "hw/usb.h"
24 #include "hw/pci.h"
25 #include "hw/msi.h"
26 #include "trace.h"
27
28 //#define DEBUG_XHCI
29 //#define DEBUG_DATA
30
31 #ifdef DEBUG_XHCI
32 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
33 #else
34 #define DPRINTF(...) do {} while (0)
35 #endif
36 #define FIXME() do { fprintf(stderr, "FIXME %s:%d\n", \
37 __func__, __LINE__); abort(); } while (0)
38
39 #define MAXSLOTS 8
40 #define MAXINTRS 1
41
42 #define USB2_PORTS 4
43 #define USB3_PORTS 4
44
45 #define MAXPORTS (USB2_PORTS+USB3_PORTS)
46
47 #define TD_QUEUE 24
48 #define BG_XFERS 8
49 #define BG_PKTS 8
50
51 /* Very pessimistic, let's hope it's enough for all cases */
52 #define EV_QUEUE (((3*TD_QUEUE)+16)*MAXSLOTS)
53 /* Do not deliver ER Full events. NEC's driver does some things not bound
54 * to the specs when it gets them */
55 #define ER_FULL_HACK
56
57 #define LEN_CAP 0x40
58 #define OFF_OPER LEN_CAP
59 #define LEN_OPER (0x400 + 0x10 * MAXPORTS)
60 #define OFF_RUNTIME ((OFF_OPER + LEN_OPER + 0x20) & ~0x1f)
61 #define LEN_RUNTIME (0x20 + MAXINTRS * 0x20)
62 #define OFF_DOORBELL (OFF_RUNTIME + LEN_RUNTIME)
63 #define LEN_DOORBELL ((MAXSLOTS + 1) * 0x20)
64
65 /* must be power of 2 */
66 #define LEN_REGS 0x2000
67
68 #if (OFF_DOORBELL + LEN_DOORBELL) > LEN_REGS
69 # error Increase LEN_REGS
70 #endif
71
72 #if MAXINTRS > 1
73 # error TODO: only one interrupter supported
74 #endif
75
76 /* bit definitions */
77 #define USBCMD_RS (1<<0)
78 #define USBCMD_HCRST (1<<1)
79 #define USBCMD_INTE (1<<2)
80 #define USBCMD_HSEE (1<<3)
81 #define USBCMD_LHCRST (1<<7)
82 #define USBCMD_CSS (1<<8)
83 #define USBCMD_CRS (1<<9)
84 #define USBCMD_EWE (1<<10)
85 #define USBCMD_EU3S (1<<11)
86
87 #define USBSTS_HCH (1<<0)
88 #define USBSTS_HSE (1<<2)
89 #define USBSTS_EINT (1<<3)
90 #define USBSTS_PCD (1<<4)
91 #define USBSTS_SSS (1<<8)
92 #define USBSTS_RSS (1<<9)
93 #define USBSTS_SRE (1<<10)
94 #define USBSTS_CNR (1<<11)
95 #define USBSTS_HCE (1<<12)
96
97
98 #define PORTSC_CCS (1<<0)
99 #define PORTSC_PED (1<<1)
100 #define PORTSC_OCA (1<<3)
101 #define PORTSC_PR (1<<4)
102 #define PORTSC_PLS_SHIFT 5
103 #define PORTSC_PLS_MASK 0xf
104 #define PORTSC_PP (1<<9)
105 #define PORTSC_SPEED_SHIFT 10
106 #define PORTSC_SPEED_MASK 0xf
107 #define PORTSC_SPEED_FULL (1<<10)
108 #define PORTSC_SPEED_LOW (2<<10)
109 #define PORTSC_SPEED_HIGH (3<<10)
110 #define PORTSC_SPEED_SUPER (4<<10)
111 #define PORTSC_PIC_SHIFT 14
112 #define PORTSC_PIC_MASK 0x3
113 #define PORTSC_LWS (1<<16)
114 #define PORTSC_CSC (1<<17)
115 #define PORTSC_PEC (1<<18)
116 #define PORTSC_WRC (1<<19)
117 #define PORTSC_OCC (1<<20)
118 #define PORTSC_PRC (1<<21)
119 #define PORTSC_PLC (1<<22)
120 #define PORTSC_CEC (1<<23)
121 #define PORTSC_CAS (1<<24)
122 #define PORTSC_WCE (1<<25)
123 #define PORTSC_WDE (1<<26)
124 #define PORTSC_WOE (1<<27)
125 #define PORTSC_DR (1<<30)
126 #define PORTSC_WPR (1<<31)
127
128 #define CRCR_RCS (1<<0)
129 #define CRCR_CS (1<<1)
130 #define CRCR_CA (1<<2)
131 #define CRCR_CRR (1<<3)
132
133 #define IMAN_IP (1<<0)
134 #define IMAN_IE (1<<1)
135
136 #define ERDP_EHB (1<<3)
137
138 #define TRB_SIZE 16
139 typedef struct XHCITRB {
140 uint64_t parameter;
141 uint32_t status;
142 uint32_t control;
143 dma_addr_t addr;
144 bool ccs;
145 } XHCITRB;
146
147
148 typedef enum TRBType {
149 TRB_RESERVED = 0,
150 TR_NORMAL,
151 TR_SETUP,
152 TR_DATA,
153 TR_STATUS,
154 TR_ISOCH,
155 TR_LINK,
156 TR_EVDATA,
157 TR_NOOP,
158 CR_ENABLE_SLOT,
159 CR_DISABLE_SLOT,
160 CR_ADDRESS_DEVICE,
161 CR_CONFIGURE_ENDPOINT,
162 CR_EVALUATE_CONTEXT,
163 CR_RESET_ENDPOINT,
164 CR_STOP_ENDPOINT,
165 CR_SET_TR_DEQUEUE,
166 CR_RESET_DEVICE,
167 CR_FORCE_EVENT,
168 CR_NEGOTIATE_BW,
169 CR_SET_LATENCY_TOLERANCE,
170 CR_GET_PORT_BANDWIDTH,
171 CR_FORCE_HEADER,
172 CR_NOOP,
173 ER_TRANSFER = 32,
174 ER_COMMAND_COMPLETE,
175 ER_PORT_STATUS_CHANGE,
176 ER_BANDWIDTH_REQUEST,
177 ER_DOORBELL,
178 ER_HOST_CONTROLLER,
179 ER_DEVICE_NOTIFICATION,
180 ER_MFINDEX_WRAP,
181 /* vendor specific bits */
182 CR_VENDOR_VIA_CHALLENGE_RESPONSE = 48,
183 CR_VENDOR_NEC_FIRMWARE_REVISION = 49,
184 CR_VENDOR_NEC_CHALLENGE_RESPONSE = 50,
185 } TRBType;
186
187 #define CR_LINK TR_LINK
188
189 typedef enum TRBCCode {
190 CC_INVALID = 0,
191 CC_SUCCESS,
192 CC_DATA_BUFFER_ERROR,
193 CC_BABBLE_DETECTED,
194 CC_USB_TRANSACTION_ERROR,
195 CC_TRB_ERROR,
196 CC_STALL_ERROR,
197 CC_RESOURCE_ERROR,
198 CC_BANDWIDTH_ERROR,
199 CC_NO_SLOTS_ERROR,
200 CC_INVALID_STREAM_TYPE_ERROR,
201 CC_SLOT_NOT_ENABLED_ERROR,
202 CC_EP_NOT_ENABLED_ERROR,
203 CC_SHORT_PACKET,
204 CC_RING_UNDERRUN,
205 CC_RING_OVERRUN,
206 CC_VF_ER_FULL,
207 CC_PARAMETER_ERROR,
208 CC_BANDWIDTH_OVERRUN,
209 CC_CONTEXT_STATE_ERROR,
210 CC_NO_PING_RESPONSE_ERROR,
211 CC_EVENT_RING_FULL_ERROR,
212 CC_INCOMPATIBLE_DEVICE_ERROR,
213 CC_MISSED_SERVICE_ERROR,
214 CC_COMMAND_RING_STOPPED,
215 CC_COMMAND_ABORTED,
216 CC_STOPPED,
217 CC_STOPPED_LENGTH_INVALID,
218 CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR = 29,
219 CC_ISOCH_BUFFER_OVERRUN = 31,
220 CC_EVENT_LOST_ERROR,
221 CC_UNDEFINED_ERROR,
222 CC_INVALID_STREAM_ID_ERROR,
223 CC_SECONDARY_BANDWIDTH_ERROR,
224 CC_SPLIT_TRANSACTION_ERROR
225 } TRBCCode;
226
227 #define TRB_C (1<<0)
228 #define TRB_TYPE_SHIFT 10
229 #define TRB_TYPE_MASK 0x3f
230 #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK)
231
232 #define TRB_EV_ED (1<<2)
233
234 #define TRB_TR_ENT (1<<1)
235 #define TRB_TR_ISP (1<<2)
236 #define TRB_TR_NS (1<<3)
237 #define TRB_TR_CH (1<<4)
238 #define TRB_TR_IOC (1<<5)
239 #define TRB_TR_IDT (1<<6)
240 #define TRB_TR_TBC_SHIFT 7
241 #define TRB_TR_TBC_MASK 0x3
242 #define TRB_TR_BEI (1<<9)
243 #define TRB_TR_TLBPC_SHIFT 16
244 #define TRB_TR_TLBPC_MASK 0xf
245 #define TRB_TR_FRAMEID_SHIFT 20
246 #define TRB_TR_FRAMEID_MASK 0x7ff
247 #define TRB_TR_SIA (1<<31)
248
249 #define TRB_TR_DIR (1<<16)
250
251 #define TRB_CR_SLOTID_SHIFT 24
252 #define TRB_CR_SLOTID_MASK 0xff
253 #define TRB_CR_EPID_SHIFT 16
254 #define TRB_CR_EPID_MASK 0x1f
255
256 #define TRB_CR_BSR (1<<9)
257 #define TRB_CR_DC (1<<9)
258
259 #define TRB_LK_TC (1<<1)
260
261 #define EP_TYPE_MASK 0x7
262 #define EP_TYPE_SHIFT 3
263
264 #define EP_STATE_MASK 0x7
265 #define EP_DISABLED (0<<0)
266 #define EP_RUNNING (1<<0)
267 #define EP_HALTED (2<<0)
268 #define EP_STOPPED (3<<0)
269 #define EP_ERROR (4<<0)
270
271 #define SLOT_STATE_MASK 0x1f
272 #define SLOT_STATE_SHIFT 27
273 #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK)
274 #define SLOT_ENABLED 0
275 #define SLOT_DEFAULT 1
276 #define SLOT_ADDRESSED 2
277 #define SLOT_CONFIGURED 3
278
279 #define SLOT_CONTEXT_ENTRIES_MASK 0x1f
280 #define SLOT_CONTEXT_ENTRIES_SHIFT 27
281
282 typedef enum EPType {
283 ET_INVALID = 0,
284 ET_ISO_OUT,
285 ET_BULK_OUT,
286 ET_INTR_OUT,
287 ET_CONTROL,
288 ET_ISO_IN,
289 ET_BULK_IN,
290 ET_INTR_IN,
291 } EPType;
292
293 typedef struct XHCIRing {
294 dma_addr_t base;
295 dma_addr_t dequeue;
296 bool ccs;
297 } XHCIRing;
298
299 typedef struct XHCIPort {
300 USBPort port;
301 uint32_t portsc;
302 } XHCIPort;
303
304 struct XHCIState;
305 typedef struct XHCIState XHCIState;
306
307 typedef struct XHCITransfer {
308 XHCIState *xhci;
309 USBPacket packet;
310 bool running_async;
311 bool running_retry;
312 bool cancelled;
313 bool complete;
314 bool backgrounded;
315 unsigned int iso_pkts;
316 unsigned int slotid;
317 unsigned int epid;
318 bool in_xfer;
319 bool iso_xfer;
320 bool bg_xfer;
321
322 unsigned int trb_count;
323 unsigned int trb_alloced;
324 XHCITRB *trbs;
325
326 unsigned int data_length;
327 unsigned int data_alloced;
328 uint8_t *data;
329
330 TRBCCode status;
331
332 unsigned int pkts;
333 unsigned int pktsize;
334 unsigned int cur_pkt;
335 } XHCITransfer;
336
337 typedef struct XHCIEPContext {
338 XHCIRing ring;
339 unsigned int next_xfer;
340 unsigned int comp_xfer;
341 XHCITransfer transfers[TD_QUEUE];
342 XHCITransfer *retry;
343 bool bg_running;
344 bool bg_updating;
345 unsigned int next_bg;
346 XHCITransfer bg_transfers[BG_XFERS];
347 EPType type;
348 dma_addr_t pctx;
349 unsigned int max_psize;
350 bool has_bg;
351 uint32_t state;
352 } XHCIEPContext;
353
354 typedef struct XHCISlot {
355 bool enabled;
356 dma_addr_t ctx;
357 unsigned int port;
358 unsigned int devaddr;
359 XHCIEPContext * eps[31];
360 } XHCISlot;
361
362 typedef struct XHCIEvent {
363 TRBType type;
364 TRBCCode ccode;
365 uint64_t ptr;
366 uint32_t length;
367 uint32_t flags;
368 uint8_t slotid;
369 uint8_t epid;
370 } XHCIEvent;
371
372 struct XHCIState {
373 PCIDevice pci_dev;
374 USBBus bus;
375 qemu_irq irq;
376 MemoryRegion mem;
377 const char *name;
378 uint32_t msi;
379 unsigned int devaddr;
380
381 /* Operational Registers */
382 uint32_t usbcmd;
383 uint32_t usbsts;
384 uint32_t dnctrl;
385 uint32_t crcr_low;
386 uint32_t crcr_high;
387 uint32_t dcbaap_low;
388 uint32_t dcbaap_high;
389 uint32_t config;
390
391 XHCIPort ports[MAXPORTS];
392 XHCISlot slots[MAXSLOTS];
393
394 /* Runtime Registers */
395 uint32_t mfindex;
396 /* note: we only support one interrupter */
397 uint32_t iman;
398 uint32_t imod;
399 uint32_t erstsz;
400 uint32_t erstba_low;
401 uint32_t erstba_high;
402 uint32_t erdp_low;
403 uint32_t erdp_high;
404
405 dma_addr_t er_start;
406 uint32_t er_size;
407 bool er_pcs;
408 unsigned int er_ep_idx;
409 bool er_full;
410
411 XHCIEvent ev_buffer[EV_QUEUE];
412 unsigned int ev_buffer_put;
413 unsigned int ev_buffer_get;
414
415 XHCIRing cmd_ring;
416 };
417
418 typedef struct XHCIEvRingSeg {
419 uint32_t addr_low;
420 uint32_t addr_high;
421 uint32_t size;
422 uint32_t rsvd;
423 } XHCIEvRingSeg;
424
425 static const char *TRBType_names[] = {
426 [TRB_RESERVED] = "TRB_RESERVED",
427 [TR_NORMAL] = "TR_NORMAL",
428 [TR_SETUP] = "TR_SETUP",
429 [TR_DATA] = "TR_DATA",
430 [TR_STATUS] = "TR_STATUS",
431 [TR_ISOCH] = "TR_ISOCH",
432 [TR_LINK] = "TR_LINK",
433 [TR_EVDATA] = "TR_EVDATA",
434 [TR_NOOP] = "TR_NOOP",
435 [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT",
436 [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT",
437 [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE",
438 [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT",
439 [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT",
440 [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT",
441 [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT",
442 [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE",
443 [CR_RESET_DEVICE] = "CR_RESET_DEVICE",
444 [CR_FORCE_EVENT] = "CR_FORCE_EVENT",
445 [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW",
446 [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE",
447 [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH",
448 [CR_FORCE_HEADER] = "CR_FORCE_HEADER",
449 [CR_NOOP] = "CR_NOOP",
450 [ER_TRANSFER] = "ER_TRANSFER",
451 [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE",
452 [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE",
453 [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST",
454 [ER_DOORBELL] = "ER_DOORBELL",
455 [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER",
456 [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION",
457 [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP",
458 [CR_VENDOR_VIA_CHALLENGE_RESPONSE] = "CR_VENDOR_VIA_CHALLENGE_RESPONSE",
459 [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION",
460 [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE",
461 };
462
463 static const char *lookup_name(uint32_t index, const char **list, uint32_t llen)
464 {
465 if (index >= llen || list[index] == NULL) {
466 return "???";
467 }
468 return list[index];
469 }
470
471 static const char *trb_name(XHCITRB *trb)
472 {
473 return lookup_name(TRB_TYPE(*trb), TRBType_names,
474 ARRAY_SIZE(TRBType_names));
475 }
476
477 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
478 unsigned int epid);
479
480 static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
481 {
482 if (sizeof(dma_addr_t) == 4) {
483 return low;
484 } else {
485 return low | (((dma_addr_t)high << 16) << 16);
486 }
487 }
488
489 static inline dma_addr_t xhci_mask64(uint64_t addr)
490 {
491 if (sizeof(dma_addr_t) == 4) {
492 return addr & 0xffffffff;
493 } else {
494 return addr;
495 }
496 }
497
498 static void xhci_irq_update(XHCIState *xhci)
499 {
500 int level = 0;
501
502 if (xhci->iman & IMAN_IP && xhci->iman & IMAN_IE &&
503 xhci->usbcmd & USBCMD_INTE) {
504 level = 1;
505 }
506
507 if (xhci->msi && msi_enabled(&xhci->pci_dev)) {
508 if (level) {
509 trace_usb_xhci_irq_msi(0);
510 msi_notify(&xhci->pci_dev, 0);
511 }
512 } else {
513 trace_usb_xhci_irq_intx(level);
514 qemu_set_irq(xhci->irq, level);
515 }
516 }
517
518 static inline int xhci_running(XHCIState *xhci)
519 {
520 return !(xhci->usbsts & USBSTS_HCH) && !xhci->er_full;
521 }
522
523 static void xhci_die(XHCIState *xhci)
524 {
525 xhci->usbsts |= USBSTS_HCE;
526 fprintf(stderr, "xhci: asserted controller error\n");
527 }
528
529 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event)
530 {
531 XHCITRB ev_trb;
532 dma_addr_t addr;
533
534 ev_trb.parameter = cpu_to_le64(event->ptr);
535 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24));
536 ev_trb.control = (event->slotid << 24) | (event->epid << 16) |
537 event->flags | (event->type << TRB_TYPE_SHIFT);
538 if (xhci->er_pcs) {
539 ev_trb.control |= TRB_C;
540 }
541 ev_trb.control = cpu_to_le32(ev_trb.control);
542
543 trace_usb_xhci_queue_event(xhci->er_ep_idx, trb_name(&ev_trb),
544 ev_trb.parameter, ev_trb.status, ev_trb.control);
545
546 addr = xhci->er_start + TRB_SIZE*xhci->er_ep_idx;
547 pci_dma_write(&xhci->pci_dev, addr, &ev_trb, TRB_SIZE);
548
549 xhci->er_ep_idx++;
550 if (xhci->er_ep_idx >= xhci->er_size) {
551 xhci->er_ep_idx = 0;
552 xhci->er_pcs = !xhci->er_pcs;
553 }
554 }
555
556 static void xhci_events_update(XHCIState *xhci)
557 {
558 dma_addr_t erdp;
559 unsigned int dp_idx;
560 bool do_irq = 0;
561
562 if (xhci->usbsts & USBSTS_HCH) {
563 return;
564 }
565
566 erdp = xhci_addr64(xhci->erdp_low, xhci->erdp_high);
567 if (erdp < xhci->er_start ||
568 erdp >= (xhci->er_start + TRB_SIZE*xhci->er_size)) {
569 fprintf(stderr, "xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
570 fprintf(stderr, "xhci: ER at "DMA_ADDR_FMT" len %d\n",
571 xhci->er_start, xhci->er_size);
572 xhci_die(xhci);
573 return;
574 }
575 dp_idx = (erdp - xhci->er_start) / TRB_SIZE;
576 assert(dp_idx < xhci->er_size);
577
578 /* NEC didn't read section 4.9.4 of the spec (v1.0 p139 top Note) and thus
579 * deadlocks when the ER is full. Hack it by holding off events until
580 * the driver decides to free at least half of the ring */
581 if (xhci->er_full) {
582 int er_free = dp_idx - xhci->er_ep_idx;
583 if (er_free <= 0) {
584 er_free += xhci->er_size;
585 }
586 if (er_free < (xhci->er_size/2)) {
587 DPRINTF("xhci_events_update(): event ring still "
588 "more than half full (hack)\n");
589 return;
590 }
591 }
592
593 while (xhci->ev_buffer_put != xhci->ev_buffer_get) {
594 assert(xhci->er_full);
595 if (((xhci->er_ep_idx+1) % xhci->er_size) == dp_idx) {
596 DPRINTF("xhci_events_update(): event ring full again\n");
597 #ifndef ER_FULL_HACK
598 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
599 xhci_write_event(xhci, &full);
600 #endif
601 do_irq = 1;
602 break;
603 }
604 XHCIEvent *event = &xhci->ev_buffer[xhci->ev_buffer_get];
605 xhci_write_event(xhci, event);
606 xhci->ev_buffer_get++;
607 do_irq = 1;
608 if (xhci->ev_buffer_get == EV_QUEUE) {
609 xhci->ev_buffer_get = 0;
610 }
611 }
612
613 if (do_irq) {
614 xhci->erdp_low |= ERDP_EHB;
615 xhci->iman |= IMAN_IP;
616 xhci->usbsts |= USBSTS_EINT;
617 xhci_irq_update(xhci);
618 }
619
620 if (xhci->er_full && xhci->ev_buffer_put == xhci->ev_buffer_get) {
621 DPRINTF("xhci_events_update(): event ring no longer full\n");
622 xhci->er_full = 0;
623 }
624 return;
625 }
626
627 static void xhci_event(XHCIState *xhci, XHCIEvent *event)
628 {
629 dma_addr_t erdp;
630 unsigned int dp_idx;
631
632 if (xhci->er_full) {
633 DPRINTF("xhci_event(): ER full, queueing\n");
634 if (((xhci->ev_buffer_put+1) % EV_QUEUE) == xhci->ev_buffer_get) {
635 fprintf(stderr, "xhci: event queue full, dropping event!\n");
636 return;
637 }
638 xhci->ev_buffer[xhci->ev_buffer_put++] = *event;
639 if (xhci->ev_buffer_put == EV_QUEUE) {
640 xhci->ev_buffer_put = 0;
641 }
642 return;
643 }
644
645 erdp = xhci_addr64(xhci->erdp_low, xhci->erdp_high);
646 if (erdp < xhci->er_start ||
647 erdp >= (xhci->er_start + TRB_SIZE*xhci->er_size)) {
648 fprintf(stderr, "xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp);
649 fprintf(stderr, "xhci: ER at "DMA_ADDR_FMT" len %d\n",
650 xhci->er_start, xhci->er_size);
651 xhci_die(xhci);
652 return;
653 }
654
655 dp_idx = (erdp - xhci->er_start) / TRB_SIZE;
656 assert(dp_idx < xhci->er_size);
657
658 if ((xhci->er_ep_idx+1) % xhci->er_size == dp_idx) {
659 DPRINTF("xhci_event(): ER full, queueing\n");
660 #ifndef ER_FULL_HACK
661 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR};
662 xhci_write_event(xhci, &full);
663 #endif
664 xhci->er_full = 1;
665 if (((xhci->ev_buffer_put+1) % EV_QUEUE) == xhci->ev_buffer_get) {
666 fprintf(stderr, "xhci: event queue full, dropping event!\n");
667 return;
668 }
669 xhci->ev_buffer[xhci->ev_buffer_put++] = *event;
670 if (xhci->ev_buffer_put == EV_QUEUE) {
671 xhci->ev_buffer_put = 0;
672 }
673 } else {
674 xhci_write_event(xhci, event);
675 }
676
677 xhci->erdp_low |= ERDP_EHB;
678 xhci->iman |= IMAN_IP;
679 xhci->usbsts |= USBSTS_EINT;
680
681 xhci_irq_update(xhci);
682 }
683
684 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring,
685 dma_addr_t base)
686 {
687 ring->base = base;
688 ring->dequeue = base;
689 ring->ccs = 1;
690 }
691
692 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
693 dma_addr_t *addr)
694 {
695 while (1) {
696 TRBType type;
697 pci_dma_read(&xhci->pci_dev, ring->dequeue, trb, TRB_SIZE);
698 trb->addr = ring->dequeue;
699 trb->ccs = ring->ccs;
700 le64_to_cpus(&trb->parameter);
701 le32_to_cpus(&trb->status);
702 le32_to_cpus(&trb->control);
703
704 DPRINTF("xhci: TRB fetched [" DMA_ADDR_FMT "]: "
705 "%016" PRIx64 " %08x %08x %s\n",
706 ring->dequeue, trb->parameter, trb->status, trb->control,
707 trb_name(trb));
708
709 if ((trb->control & TRB_C) != ring->ccs) {
710 return 0;
711 }
712
713 type = TRB_TYPE(*trb);
714
715 if (type != TR_LINK) {
716 if (addr) {
717 *addr = ring->dequeue;
718 }
719 ring->dequeue += TRB_SIZE;
720 return type;
721 } else {
722 ring->dequeue = xhci_mask64(trb->parameter);
723 if (trb->control & TRB_LK_TC) {
724 ring->ccs = !ring->ccs;
725 }
726 }
727 }
728 }
729
730 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
731 {
732 XHCITRB trb;
733 int length = 0;
734 dma_addr_t dequeue = ring->dequeue;
735 bool ccs = ring->ccs;
736 /* hack to bundle together the two/three TDs that make a setup transfer */
737 bool control_td_set = 0;
738
739 while (1) {
740 TRBType type;
741 pci_dma_read(&xhci->pci_dev, dequeue, &trb, TRB_SIZE);
742 le64_to_cpus(&trb.parameter);
743 le32_to_cpus(&trb.status);
744 le32_to_cpus(&trb.control);
745
746 DPRINTF("xhci: TRB peeked [" DMA_ADDR_FMT "]: "
747 "%016" PRIx64 " %08x %08x\n",
748 dequeue, trb.parameter, trb.status, trb.control);
749
750 if ((trb.control & TRB_C) != ccs) {
751 return -length;
752 }
753
754 type = TRB_TYPE(trb);
755
756 if (type == TR_LINK) {
757 dequeue = xhci_mask64(trb.parameter);
758 if (trb.control & TRB_LK_TC) {
759 ccs = !ccs;
760 }
761 continue;
762 }
763
764 length += 1;
765 dequeue += TRB_SIZE;
766
767 if (type == TR_SETUP) {
768 control_td_set = 1;
769 } else if (type == TR_STATUS) {
770 control_td_set = 0;
771 }
772
773 if (!control_td_set && !(trb.control & TRB_TR_CH)) {
774 return length;
775 }
776 }
777 }
778
779 static void xhci_er_reset(XHCIState *xhci)
780 {
781 XHCIEvRingSeg seg;
782
783 /* cache the (sole) event ring segment location */
784 if (xhci->erstsz != 1) {
785 fprintf(stderr, "xhci: invalid value for ERSTSZ: %d\n", xhci->erstsz);
786 xhci_die(xhci);
787 return;
788 }
789 dma_addr_t erstba = xhci_addr64(xhci->erstba_low, xhci->erstba_high);
790 pci_dma_read(&xhci->pci_dev, erstba, &seg, sizeof(seg));
791 le32_to_cpus(&seg.addr_low);
792 le32_to_cpus(&seg.addr_high);
793 le32_to_cpus(&seg.size);
794 if (seg.size < 16 || seg.size > 4096) {
795 fprintf(stderr, "xhci: invalid value for segment size: %d\n", seg.size);
796 xhci_die(xhci);
797 return;
798 }
799 xhci->er_start = xhci_addr64(seg.addr_low, seg.addr_high);
800 xhci->er_size = seg.size;
801
802 xhci->er_ep_idx = 0;
803 xhci->er_pcs = 1;
804 xhci->er_full = 0;
805
806 DPRINTF("xhci: event ring:" DMA_ADDR_FMT " [%d]\n",
807 xhci->er_start, xhci->er_size);
808 }
809
810 static void xhci_run(XHCIState *xhci)
811 {
812 trace_usb_xhci_run();
813 xhci->usbsts &= ~USBSTS_HCH;
814 }
815
816 static void xhci_stop(XHCIState *xhci)
817 {
818 trace_usb_xhci_stop();
819 xhci->usbsts |= USBSTS_HCH;
820 xhci->crcr_low &= ~CRCR_CRR;
821 }
822
823 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
824 uint32_t state)
825 {
826 uint32_t ctx[5];
827 if (epctx->state == state) {
828 return;
829 }
830
831 pci_dma_read(&xhci->pci_dev, epctx->pctx, ctx, sizeof(ctx));
832 ctx[0] &= ~EP_STATE_MASK;
833 ctx[0] |= state;
834 ctx[2] = epctx->ring.dequeue | epctx->ring.ccs;
835 ctx[3] = (epctx->ring.dequeue >> 16) >> 16;
836 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n",
837 epctx->pctx, state, ctx[3], ctx[2]);
838 pci_dma_write(&xhci->pci_dev, epctx->pctx, ctx, sizeof(ctx));
839 epctx->state = state;
840 }
841
842 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
843 unsigned int epid, dma_addr_t pctx,
844 uint32_t *ctx)
845 {
846 XHCISlot *slot;
847 XHCIEPContext *epctx;
848 dma_addr_t dequeue;
849 int i;
850
851 assert(slotid >= 1 && slotid <= MAXSLOTS);
852 assert(epid >= 1 && epid <= 31);
853
854 DPRINTF("xhci_enable_ep(%d, %d)\n", slotid, epid);
855
856 slot = &xhci->slots[slotid-1];
857 if (slot->eps[epid-1]) {
858 fprintf(stderr, "xhci: slot %d ep %d already enabled!\n", slotid, epid);
859 return CC_TRB_ERROR;
860 }
861
862 epctx = g_malloc(sizeof(XHCIEPContext));
863 memset(epctx, 0, sizeof(XHCIEPContext));
864
865 slot->eps[epid-1] = epctx;
866
867 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]);
868 xhci_ring_init(xhci, &epctx->ring, dequeue);
869 epctx->ring.ccs = ctx[2] & 1;
870
871 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK;
872 DPRINTF("xhci: endpoint %d.%d type is %d\n", epid/2, epid%2, epctx->type);
873 epctx->pctx = pctx;
874 epctx->max_psize = ctx[1]>>16;
875 epctx->max_psize *= 1+((ctx[1]>>8)&0xff);
876 epctx->has_bg = false;
877 if (epctx->type == ET_ISO_IN) {
878 epctx->has_bg = true;
879 }
880 DPRINTF("xhci: endpoint %d.%d max transaction (burst) size is %d\n",
881 epid/2, epid%2, epctx->max_psize);
882 for (i = 0; i < ARRAY_SIZE(epctx->transfers); i++) {
883 usb_packet_init(&epctx->transfers[i].packet);
884 }
885
886 epctx->state = EP_RUNNING;
887 ctx[0] &= ~EP_STATE_MASK;
888 ctx[0] |= EP_RUNNING;
889
890 return CC_SUCCESS;
891 }
892
893 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
894 unsigned int epid)
895 {
896 XHCISlot *slot;
897 XHCIEPContext *epctx;
898 int i, xferi, killed = 0;
899 assert(slotid >= 1 && slotid <= MAXSLOTS);
900 assert(epid >= 1 && epid <= 31);
901
902 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid);
903
904 slot = &xhci->slots[slotid-1];
905
906 if (!slot->eps[epid-1]) {
907 return 0;
908 }
909
910 epctx = slot->eps[epid-1];
911
912 xferi = epctx->next_xfer;
913 for (i = 0; i < TD_QUEUE; i++) {
914 XHCITransfer *t = &epctx->transfers[xferi];
915 if (t->running_async) {
916 usb_cancel_packet(&t->packet);
917 t->running_async = 0;
918 t->cancelled = 1;
919 DPRINTF("xhci: cancelling transfer %d, waiting for it to complete...\n", i);
920 killed++;
921 }
922 if (t->running_retry) {
923 t->running_retry = 0;
924 epctx->retry = NULL;
925 }
926 if (t->backgrounded) {
927 t->backgrounded = 0;
928 }
929 if (t->trbs) {
930 g_free(t->trbs);
931 }
932 if (t->data) {
933 g_free(t->data);
934 }
935
936 t->trbs = NULL;
937 t->data = NULL;
938 t->trb_count = t->trb_alloced = 0;
939 t->data_length = t->data_alloced = 0;
940 xferi = (xferi + 1) % TD_QUEUE;
941 }
942 if (epctx->has_bg) {
943 xferi = epctx->next_bg;
944 for (i = 0; i < BG_XFERS; i++) {
945 XHCITransfer *t = &epctx->bg_transfers[xferi];
946 if (t->running_async) {
947 usb_cancel_packet(&t->packet);
948 t->running_async = 0;
949 t->cancelled = 1;
950 DPRINTF("xhci: cancelling bg transfer %d, waiting for it to complete...\n", i);
951 killed++;
952 }
953 if (t->data) {
954 g_free(t->data);
955 }
956
957 t->data = NULL;
958 xferi = (xferi + 1) % BG_XFERS;
959 }
960 }
961 return killed;
962 }
963
964 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
965 unsigned int epid)
966 {
967 XHCISlot *slot;
968 XHCIEPContext *epctx;
969
970 assert(slotid >= 1 && slotid <= MAXSLOTS);
971 assert(epid >= 1 && epid <= 31);
972
973 DPRINTF("xhci_disable_ep(%d, %d)\n", slotid, epid);
974
975 slot = &xhci->slots[slotid-1];
976
977 if (!slot->eps[epid-1]) {
978 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid);
979 return CC_SUCCESS;
980 }
981
982 xhci_ep_nuke_xfers(xhci, slotid, epid);
983
984 epctx = slot->eps[epid-1];
985
986 xhci_set_ep_state(xhci, epctx, EP_DISABLED);
987
988 g_free(epctx);
989 slot->eps[epid-1] = NULL;
990
991 return CC_SUCCESS;
992 }
993
994 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid,
995 unsigned int epid)
996 {
997 XHCISlot *slot;
998 XHCIEPContext *epctx;
999
1000 DPRINTF("xhci_stop_ep(%d, %d)\n", slotid, epid);
1001
1002 assert(slotid >= 1 && slotid <= MAXSLOTS);
1003
1004 if (epid < 1 || epid > 31) {
1005 fprintf(stderr, "xhci: bad ep %d\n", epid);
1006 return CC_TRB_ERROR;
1007 }
1008
1009 slot = &xhci->slots[slotid-1];
1010
1011 if (!slot->eps[epid-1]) {
1012 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1013 return CC_EP_NOT_ENABLED_ERROR;
1014 }
1015
1016 if (xhci_ep_nuke_xfers(xhci, slotid, epid) > 0) {
1017 fprintf(stderr, "xhci: FIXME: endpoint stopped w/ xfers running, "
1018 "data might be lost\n");
1019 }
1020
1021 epctx = slot->eps[epid-1];
1022
1023 xhci_set_ep_state(xhci, epctx, EP_STOPPED);
1024
1025 return CC_SUCCESS;
1026 }
1027
1028 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid,
1029 unsigned int epid)
1030 {
1031 XHCISlot *slot;
1032 XHCIEPContext *epctx;
1033 USBDevice *dev;
1034
1035 assert(slotid >= 1 && slotid <= MAXSLOTS);
1036
1037 DPRINTF("xhci_reset_ep(%d, %d)\n", slotid, epid);
1038
1039 if (epid < 1 || epid > 31) {
1040 fprintf(stderr, "xhci: bad ep %d\n", epid);
1041 return CC_TRB_ERROR;
1042 }
1043
1044 slot = &xhci->slots[slotid-1];
1045
1046 if (!slot->eps[epid-1]) {
1047 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1048 return CC_EP_NOT_ENABLED_ERROR;
1049 }
1050
1051 epctx = slot->eps[epid-1];
1052
1053 if (epctx->state != EP_HALTED) {
1054 fprintf(stderr, "xhci: reset EP while EP %d not halted (%d)\n",
1055 epid, epctx->state);
1056 return CC_CONTEXT_STATE_ERROR;
1057 }
1058
1059 if (xhci_ep_nuke_xfers(xhci, slotid, epid) > 0) {
1060 fprintf(stderr, "xhci: FIXME: endpoint reset w/ xfers running, "
1061 "data might be lost\n");
1062 }
1063
1064 uint8_t ep = epid>>1;
1065
1066 if (epid & 1) {
1067 ep |= 0x80;
1068 }
1069
1070 dev = xhci->ports[xhci->slots[slotid-1].port-1].port.dev;
1071 if (!dev) {
1072 return CC_USB_TRANSACTION_ERROR;
1073 }
1074
1075 xhci_set_ep_state(xhci, epctx, EP_STOPPED);
1076
1077 return CC_SUCCESS;
1078 }
1079
1080 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid,
1081 unsigned int epid, uint64_t pdequeue)
1082 {
1083 XHCISlot *slot;
1084 XHCIEPContext *epctx;
1085 dma_addr_t dequeue;
1086
1087 assert(slotid >= 1 && slotid <= MAXSLOTS);
1088
1089 if (epid < 1 || epid > 31) {
1090 fprintf(stderr, "xhci: bad ep %d\n", epid);
1091 return CC_TRB_ERROR;
1092 }
1093
1094 DPRINTF("xhci_set_ep_dequeue(%d, %d, %016"PRIx64")\n", slotid, epid, pdequeue);
1095 dequeue = xhci_mask64(pdequeue);
1096
1097 slot = &xhci->slots[slotid-1];
1098
1099 if (!slot->eps[epid-1]) {
1100 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid);
1101 return CC_EP_NOT_ENABLED_ERROR;
1102 }
1103
1104 epctx = slot->eps[epid-1];
1105
1106
1107 if (epctx->state != EP_STOPPED) {
1108 fprintf(stderr, "xhci: set EP dequeue pointer while EP %d not stopped\n", epid);
1109 return CC_CONTEXT_STATE_ERROR;
1110 }
1111
1112 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF);
1113 epctx->ring.ccs = dequeue & 1;
1114
1115 xhci_set_ep_state(xhci, epctx, EP_STOPPED);
1116
1117 return CC_SUCCESS;
1118 }
1119
1120 static int xhci_xfer_data(XHCITransfer *xfer, uint8_t *data,
1121 unsigned int length, bool in_xfer, bool out_xfer,
1122 bool report)
1123 {
1124 int i;
1125 uint32_t edtla = 0;
1126 unsigned int transferred = 0;
1127 unsigned int left = length;
1128 bool reported = 0;
1129 bool shortpkt = 0;
1130 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS};
1131 XHCIState *xhci = xfer->xhci;
1132
1133 DPRINTF("xhci_xfer_data(len=%d, in_xfer=%d, out_xfer=%d, report=%d)\n",
1134 length, in_xfer, out_xfer, report);
1135
1136 assert(!(in_xfer && out_xfer));
1137
1138 for (i = 0; i < xfer->trb_count; i++) {
1139 XHCITRB *trb = &xfer->trbs[i];
1140 dma_addr_t addr;
1141 unsigned int chunk = 0;
1142
1143 switch (TRB_TYPE(*trb)) {
1144 case TR_DATA:
1145 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) {
1146 fprintf(stderr, "xhci: data direction mismatch for TR_DATA\n");
1147 xhci_die(xhci);
1148 return transferred;
1149 }
1150 /* fallthrough */
1151 case TR_NORMAL:
1152 case TR_ISOCH:
1153 addr = xhci_mask64(trb->parameter);
1154 chunk = trb->status & 0x1ffff;
1155 if (chunk > left) {
1156 chunk = left;
1157 shortpkt = 1;
1158 }
1159 if (in_xfer || out_xfer) {
1160 if (trb->control & TRB_TR_IDT) {
1161 uint64_t idata;
1162 if (chunk > 8 || in_xfer) {
1163 fprintf(stderr, "xhci: invalid immediate data TRB\n");
1164 xhci_die(xhci);
1165 return transferred;
1166 }
1167 idata = le64_to_cpu(trb->parameter);
1168 memcpy(data, &idata, chunk);
1169 } else {
1170 DPRINTF("xhci_xfer_data: r/w(%d) %d bytes at "
1171 DMA_ADDR_FMT "\n", in_xfer, chunk, addr);
1172 if (in_xfer) {
1173 pci_dma_write(&xhci->pci_dev, addr, data, chunk);
1174 } else {
1175 pci_dma_read(&xhci->pci_dev, addr, data, chunk);
1176 }
1177 #ifdef DEBUG_DATA
1178 unsigned int count = chunk;
1179 int i;
1180 if (count > 16) {
1181 count = 16;
1182 }
1183 DPRINTF(" ::");
1184 for (i = 0; i < count; i++) {
1185 DPRINTF(" %02x", data[i]);
1186 }
1187 DPRINTF("\n");
1188 #endif
1189 }
1190 }
1191 left -= chunk;
1192 data += chunk;
1193 edtla += chunk;
1194 transferred += chunk;
1195 break;
1196 case TR_STATUS:
1197 reported = 0;
1198 shortpkt = 0;
1199 break;
1200 }
1201
1202 if (report && !reported && (trb->control & TRB_TR_IOC ||
1203 (shortpkt && (trb->control & TRB_TR_ISP)))) {
1204 event.slotid = xfer->slotid;
1205 event.epid = xfer->epid;
1206 event.length = (trb->status & 0x1ffff) - chunk;
1207 event.flags = 0;
1208 event.ptr = trb->addr;
1209 if (xfer->status == CC_SUCCESS) {
1210 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS;
1211 } else {
1212 event.ccode = xfer->status;
1213 }
1214 if (TRB_TYPE(*trb) == TR_EVDATA) {
1215 event.ptr = trb->parameter;
1216 event.flags |= TRB_EV_ED;
1217 event.length = edtla & 0xffffff;
1218 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length);
1219 edtla = 0;
1220 }
1221 xhci_event(xhci, &event);
1222 reported = 1;
1223 }
1224 }
1225 return transferred;
1226 }
1227
1228 static void xhci_stall_ep(XHCITransfer *xfer)
1229 {
1230 XHCIState *xhci = xfer->xhci;
1231 XHCISlot *slot = &xhci->slots[xfer->slotid-1];
1232 XHCIEPContext *epctx = slot->eps[xfer->epid-1];
1233
1234 epctx->ring.dequeue = xfer->trbs[0].addr;
1235 epctx->ring.ccs = xfer->trbs[0].ccs;
1236 xhci_set_ep_state(xhci, epctx, EP_HALTED);
1237 DPRINTF("xhci: stalled slot %d ep %d\n", xfer->slotid, xfer->epid);
1238 DPRINTF("xhci: will continue at "DMA_ADDR_FMT"\n", epctx->ring.dequeue);
1239 }
1240
1241 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer,
1242 XHCIEPContext *epctx);
1243
1244 static void xhci_bg_update(XHCIState *xhci, XHCIEPContext *epctx)
1245 {
1246 if (epctx->bg_updating) {
1247 return;
1248 }
1249 DPRINTF("xhci_bg_update(%p, %p)\n", xhci, epctx);
1250 assert(epctx->has_bg);
1251 DPRINTF("xhci: fg=%d bg=%d\n", epctx->comp_xfer, epctx->next_bg);
1252 epctx->bg_updating = 1;
1253 while (epctx->transfers[epctx->comp_xfer].backgrounded &&
1254 epctx->bg_transfers[epctx->next_bg].complete) {
1255 XHCITransfer *fg = &epctx->transfers[epctx->comp_xfer];
1256 XHCITransfer *bg = &epctx->bg_transfers[epctx->next_bg];
1257 #if 0
1258 DPRINTF("xhci: completing fg %d from bg %d.%d (stat: %d)\n",
1259 epctx->comp_xfer, epctx->next_bg, bg->cur_pkt,
1260 bg->usbxfer->iso_packet_desc[bg->cur_pkt].status
1261 );
1262 #endif
1263 assert(epctx->type == ET_ISO_IN);
1264 assert(bg->iso_xfer);
1265 assert(bg->in_xfer);
1266 uint8_t *p = bg->data + bg->cur_pkt * bg->pktsize;
1267 #if 0
1268 int len = bg->usbxfer->iso_packet_desc[bg->cur_pkt].actual_length;
1269 fg->status = libusb_to_ccode(bg->usbxfer->iso_packet_desc[bg->cur_pkt].status);
1270 #else
1271 int len = 0;
1272 FIXME();
1273 #endif
1274 fg->complete = 1;
1275 fg->backgrounded = 0;
1276
1277 if (fg->status == CC_STALL_ERROR) {
1278 xhci_stall_ep(fg);
1279 }
1280
1281 xhci_xfer_data(fg, p, len, 1, 0, 1);
1282
1283 epctx->comp_xfer++;
1284 if (epctx->comp_xfer == TD_QUEUE) {
1285 epctx->comp_xfer = 0;
1286 }
1287 DPRINTF("next fg xfer: %d\n", epctx->comp_xfer);
1288 bg->cur_pkt++;
1289 if (bg->cur_pkt == bg->pkts) {
1290 bg->complete = 0;
1291 if (xhci_submit(xhci, bg, epctx) < 0) {
1292 fprintf(stderr, "xhci: bg resubmit failed\n");
1293 }
1294 epctx->next_bg++;
1295 if (epctx->next_bg == BG_XFERS) {
1296 epctx->next_bg = 0;
1297 }
1298 DPRINTF("next bg xfer: %d\n", epctx->next_bg);
1299
1300 xhci_kick_ep(xhci, fg->slotid, fg->epid);
1301 }
1302 }
1303 epctx->bg_updating = 0;
1304 }
1305
1306 #if 0
1307 static void xhci_xfer_cb(struct libusb_transfer *transfer)
1308 {
1309 XHCIState *xhci;
1310 XHCITransfer *xfer;
1311
1312 xfer = (XHCITransfer *)transfer->user_data;
1313 xhci = xfer->xhci;
1314
1315 DPRINTF("xhci_xfer_cb(slot=%d, ep=%d, status=%d)\n", xfer->slotid,
1316 xfer->epid, transfer->status);
1317
1318 assert(xfer->slotid >= 1 && xfer->slotid <= MAXSLOTS);
1319 assert(xfer->epid >= 1 && xfer->epid <= 31);
1320
1321 if (xfer->cancelled) {
1322 DPRINTF("xhci: transfer cancelled, not reporting anything\n");
1323 xfer->running = 0;
1324 return;
1325 }
1326
1327 XHCIEPContext *epctx;
1328 XHCISlot *slot;
1329 slot = &xhci->slots[xfer->slotid-1];
1330 assert(slot->eps[xfer->epid-1]);
1331 epctx = slot->eps[xfer->epid-1];
1332
1333 if (xfer->bg_xfer) {
1334 DPRINTF("xhci: background transfer, updating\n");
1335 xfer->complete = 1;
1336 xfer->running = 0;
1337 xhci_bg_update(xhci, epctx);
1338 return;
1339 }
1340
1341 if (xfer->iso_xfer) {
1342 transfer->status = transfer->iso_packet_desc[0].status;
1343 transfer->actual_length = transfer->iso_packet_desc[0].actual_length;
1344 }
1345
1346 xfer->status = libusb_to_ccode(transfer->status);
1347
1348 xfer->complete = 1;
1349 xfer->running = 0;
1350
1351 if (transfer->status == LIBUSB_TRANSFER_STALL)
1352 xhci_stall_ep(xhci, epctx, xfer);
1353
1354 DPRINTF("xhci: transfer actual length = %d\n", transfer->actual_length);
1355
1356 if (xfer->in_xfer) {
1357 if (xfer->epid == 1) {
1358 xhci_xfer_data(xhci, xfer, xfer->data + 8,
1359 transfer->actual_length, 1, 0, 1);
1360 } else {
1361 xhci_xfer_data(xhci, xfer, xfer->data,
1362 transfer->actual_length, 1, 0, 1);
1363 }
1364 } else {
1365 xhci_xfer_data(xhci, xfer, NULL, transfer->actual_length, 0, 0, 1);
1366 }
1367
1368 xhci_kick_ep(xhci, xfer->slotid, xfer->epid);
1369 }
1370
1371 static int xhci_hle_control(XHCIState *xhci, XHCITransfer *xfer,
1372 uint8_t bmRequestType, uint8_t bRequest,
1373 uint16_t wValue, uint16_t wIndex, uint16_t wLength)
1374 {
1375 uint16_t type_req = (bmRequestType << 8) | bRequest;
1376
1377 switch (type_req) {
1378 case 0x0000 | USB_REQ_SET_CONFIGURATION:
1379 DPRINTF("xhci: HLE switch configuration\n");
1380 return xhci_switch_config(xhci, xfer->slotid, wValue) == 0;
1381 case 0x0100 | USB_REQ_SET_INTERFACE:
1382 DPRINTF("xhci: HLE set interface altsetting\n");
1383 return xhci_set_iface_alt(xhci, xfer->slotid, wIndex, wValue) == 0;
1384 case 0x0200 | USB_REQ_CLEAR_FEATURE:
1385 if (wValue == 0) { // endpoint halt
1386 DPRINTF("xhci: HLE clear halt\n");
1387 return xhci_clear_halt(xhci, xfer->slotid, wIndex);
1388 }
1389 case 0x0000 | USB_REQ_SET_ADDRESS:
1390 fprintf(stderr, "xhci: warn: illegal SET_ADDRESS request\n");
1391 return 0;
1392 default:
1393 return 0;
1394 }
1395 }
1396 #endif
1397
1398 static int xhci_setup_packet(XHCITransfer *xfer, USBDevice *dev)
1399 {
1400 USBEndpoint *ep;
1401 int dir;
1402
1403 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT;
1404 ep = usb_ep_get(dev, dir, xfer->epid >> 1);
1405 usb_packet_setup(&xfer->packet, dir, ep);
1406 usb_packet_addbuf(&xfer->packet, xfer->data, xfer->data_length);
1407 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
1408 xfer->packet.pid, dev->addr, ep->nr);
1409 return 0;
1410 }
1411
1412 static int xhci_complete_packet(XHCITransfer *xfer, int ret)
1413 {
1414 if (ret == USB_RET_ASYNC) {
1415 xfer->running_async = 1;
1416 xfer->running_retry = 0;
1417 xfer->complete = 0;
1418 xfer->cancelled = 0;
1419 return 0;
1420 } else if (ret == USB_RET_NAK) {
1421 xfer->running_async = 0;
1422 xfer->running_retry = 1;
1423 xfer->complete = 0;
1424 xfer->cancelled = 0;
1425 return 0;
1426 } else {
1427 xfer->running_async = 0;
1428 xfer->running_retry = 0;
1429 xfer->complete = 1;
1430 }
1431
1432 if (ret >= 0) {
1433 xfer->status = CC_SUCCESS;
1434 xhci_xfer_data(xfer, xfer->data, ret, xfer->in_xfer, 0, 1);
1435 return 0;
1436 }
1437
1438 /* error */
1439 switch (ret) {
1440 case USB_RET_NODEV:
1441 xfer->status = CC_USB_TRANSACTION_ERROR;
1442 xhci_xfer_data(xfer, xfer->data, 0, xfer->in_xfer, 0, 1);
1443 xhci_stall_ep(xfer);
1444 break;
1445 case USB_RET_STALL:
1446 xfer->status = CC_STALL_ERROR;
1447 xhci_xfer_data(xfer, xfer->data, 0, xfer->in_xfer, 0, 1);
1448 xhci_stall_ep(xfer);
1449 break;
1450 default:
1451 fprintf(stderr, "%s: FIXME: ret = %d\n", __FUNCTION__, ret);
1452 FIXME();
1453 }
1454 return 0;
1455 }
1456
1457 static USBDevice *xhci_find_device(XHCIPort *port, uint8_t addr)
1458 {
1459 if (!(port->portsc & PORTSC_PED)) {
1460 return NULL;
1461 }
1462 return usb_find_device(&port->port, addr);
1463 }
1464
1465 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
1466 {
1467 XHCITRB *trb_setup, *trb_status;
1468 uint8_t bmRequestType;
1469 uint16_t wLength;
1470 XHCIPort *port;
1471 USBDevice *dev;
1472 int ret;
1473
1474 DPRINTF("xhci_fire_ctl_transfer(slot=%d)\n", xfer->slotid);
1475
1476 trb_setup = &xfer->trbs[0];
1477 trb_status = &xfer->trbs[xfer->trb_count-1];
1478
1479 /* at most one Event Data TRB allowed after STATUS */
1480 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) {
1481 trb_status--;
1482 }
1483
1484 /* do some sanity checks */
1485 if (TRB_TYPE(*trb_setup) != TR_SETUP) {
1486 fprintf(stderr, "xhci: ep0 first TD not SETUP: %d\n",
1487 TRB_TYPE(*trb_setup));
1488 return -1;
1489 }
1490 if (TRB_TYPE(*trb_status) != TR_STATUS) {
1491 fprintf(stderr, "xhci: ep0 last TD not STATUS: %d\n",
1492 TRB_TYPE(*trb_status));
1493 return -1;
1494 }
1495 if (!(trb_setup->control & TRB_TR_IDT)) {
1496 fprintf(stderr, "xhci: Setup TRB doesn't have IDT set\n");
1497 return -1;
1498 }
1499 if ((trb_setup->status & 0x1ffff) != 8) {
1500 fprintf(stderr, "xhci: Setup TRB has bad length (%d)\n",
1501 (trb_setup->status & 0x1ffff));
1502 return -1;
1503 }
1504
1505 bmRequestType = trb_setup->parameter;
1506 wLength = trb_setup->parameter >> 48;
1507
1508 if (xfer->data && xfer->data_alloced < wLength) {
1509 xfer->data_alloced = 0;
1510 g_free(xfer->data);
1511 xfer->data = NULL;
1512 }
1513 if (!xfer->data) {
1514 DPRINTF("xhci: alloc %d bytes data\n", wLength);
1515 xfer->data = g_malloc(wLength+1);
1516 xfer->data_alloced = wLength;
1517 }
1518 xfer->data_length = wLength;
1519
1520 port = &xhci->ports[xhci->slots[xfer->slotid-1].port-1];
1521 dev = xhci_find_device(port, xhci->slots[xfer->slotid-1].devaddr);
1522 if (!dev) {
1523 fprintf(stderr, "xhci: slot %d port %d has no device\n", xfer->slotid,
1524 xhci->slots[xfer->slotid-1].port);
1525 return -1;
1526 }
1527
1528 xfer->in_xfer = bmRequestType & USB_DIR_IN;
1529 xfer->iso_xfer = false;
1530
1531 xhci_setup_packet(xfer, dev);
1532 xfer->packet.parameter = trb_setup->parameter;
1533 if (!xfer->in_xfer) {
1534 xhci_xfer_data(xfer, xfer->data, wLength, 0, 1, 0);
1535 }
1536
1537 ret = usb_handle_packet(dev, &xfer->packet);
1538
1539 xhci_complete_packet(xfer, ret);
1540 if (!xfer->running_async && !xfer->running_retry) {
1541 xhci_kick_ep(xhci, xfer->slotid, xfer->epid);
1542 }
1543 return 0;
1544 }
1545
1546 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1547 {
1548 XHCIPort *port;
1549 USBDevice *dev;
1550 int ret;
1551
1552 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", xfer->slotid, xfer->epid);
1553
1554 xfer->in_xfer = epctx->type>>2;
1555
1556 if (xfer->data && xfer->data_alloced < xfer->data_length) {
1557 xfer->data_alloced = 0;
1558 g_free(xfer->data);
1559 xfer->data = NULL;
1560 }
1561 if (!xfer->data && xfer->data_length) {
1562 DPRINTF("xhci: alloc %d bytes data\n", xfer->data_length);
1563 xfer->data = g_malloc(xfer->data_length);
1564 xfer->data_alloced = xfer->data_length;
1565 }
1566 if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
1567 if (!xfer->bg_xfer) {
1568 xfer->pkts = 1;
1569 }
1570 } else {
1571 xfer->pkts = 0;
1572 }
1573
1574 port = &xhci->ports[xhci->slots[xfer->slotid-1].port-1];
1575 dev = xhci_find_device(port, xhci->slots[xfer->slotid-1].devaddr);
1576 if (!dev) {
1577 fprintf(stderr, "xhci: slot %d port %d has no device\n", xfer->slotid,
1578 xhci->slots[xfer->slotid-1].port);
1579 return -1;
1580 }
1581
1582 xhci_setup_packet(xfer, dev);
1583
1584 switch(epctx->type) {
1585 case ET_INTR_OUT:
1586 case ET_INTR_IN:
1587 case ET_BULK_OUT:
1588 case ET_BULK_IN:
1589 break;
1590 case ET_ISO_OUT:
1591 case ET_ISO_IN:
1592 FIXME();
1593 break;
1594 default:
1595 fprintf(stderr, "xhci: unknown or unhandled EP "
1596 "(type %d, in %d, ep %02x)\n",
1597 epctx->type, xfer->in_xfer, xfer->epid);
1598 return -1;
1599 }
1600
1601 if (!xfer->in_xfer) {
1602 xhci_xfer_data(xfer, xfer->data, xfer->data_length, 0, 1, 0);
1603 }
1604 ret = usb_handle_packet(dev, &xfer->packet);
1605
1606 xhci_complete_packet(xfer, ret);
1607 if (!xfer->running_async && !xfer->running_retry) {
1608 xhci_kick_ep(xhci, xfer->slotid, xfer->epid);
1609 }
1610 return 0;
1611 }
1612
1613 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
1614 {
1615 int i;
1616 unsigned int length = 0;
1617 XHCITRB *trb;
1618
1619 DPRINTF("xhci_fire_transfer(slotid=%d,epid=%d)\n", xfer->slotid, xfer->epid);
1620
1621 for (i = 0; i < xfer->trb_count; i++) {
1622 trb = &xfer->trbs[i];
1623 if (TRB_TYPE(*trb) == TR_NORMAL || TRB_TYPE(*trb) == TR_ISOCH) {
1624 length += trb->status & 0x1ffff;
1625 }
1626 }
1627 DPRINTF("xhci: total TD length=%d\n", length);
1628
1629 if (!epctx->has_bg) {
1630 xfer->data_length = length;
1631 xfer->backgrounded = 0;
1632 return xhci_submit(xhci, xfer, epctx);
1633 } else {
1634 if (!epctx->bg_running) {
1635 for (i = 0; i < BG_XFERS; i++) {
1636 XHCITransfer *t = &epctx->bg_transfers[i];
1637 t->xhci = xhci;
1638 t->epid = xfer->epid;
1639 t->slotid = xfer->slotid;
1640 t->pkts = BG_PKTS;
1641 t->pktsize = epctx->max_psize;
1642 t->data_length = t->pkts * t->pktsize;
1643 t->bg_xfer = 1;
1644 if (xhci_submit(xhci, t, epctx) < 0) {
1645 fprintf(stderr, "xhci: bg submit failed\n");
1646 return -1;
1647 }
1648 }
1649 epctx->bg_running = 1;
1650 }
1651 xfer->backgrounded = 1;
1652 xhci_bg_update(xhci, epctx);
1653 return 0;
1654 }
1655 }
1656
1657 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, unsigned int epid)
1658 {
1659 XHCIEPContext *epctx;
1660 int length;
1661 int i;
1662
1663 assert(slotid >= 1 && slotid <= MAXSLOTS);
1664 assert(epid >= 1 && epid <= 31);
1665 DPRINTF("xhci_kick_ep(%d, %d)\n", slotid, epid);
1666
1667 if (!xhci->slots[slotid-1].enabled) {
1668 fprintf(stderr, "xhci: xhci_kick_ep for disabled slot %d\n", slotid);
1669 return;
1670 }
1671 epctx = xhci->slots[slotid-1].eps[epid-1];
1672 if (!epctx) {
1673 fprintf(stderr, "xhci: xhci_kick_ep for disabled endpoint %d,%d\n",
1674 epid, slotid);
1675 return;
1676 }
1677
1678 if (epctx->retry) {
1679 /* retry nak'ed transfer */
1680 XHCITransfer *xfer = epctx->retry;
1681 int result;
1682
1683 DPRINTF("xhci: retry nack'ed transfer ...\n");
1684 assert(xfer->running_retry);
1685 xhci_setup_packet(xfer, xfer->packet.ep->dev);
1686 result = usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
1687 if (result == USB_RET_NAK) {
1688 DPRINTF("xhci: ... xfer still nacked\n");
1689 return;
1690 }
1691 DPRINTF("xhci: ... result %d\n", result);
1692 xhci_complete_packet(xfer, result);
1693 assert(!xfer->running_retry);
1694 epctx->retry = NULL;
1695 }
1696
1697 if (epctx->state == EP_HALTED) {
1698 DPRINTF("xhci: ep halted, not running schedule\n");
1699 return;
1700 }
1701
1702 xhci_set_ep_state(xhci, epctx, EP_RUNNING);
1703
1704 while (1) {
1705 XHCITransfer *xfer = &epctx->transfers[epctx->next_xfer];
1706 if (xfer->running_async || xfer->running_retry || xfer->backgrounded) {
1707 DPRINTF("xhci: ep is busy (#%d,%d,%d,%d)\n",
1708 epctx->next_xfer, xfer->running_async,
1709 xfer->running_retry, xfer->backgrounded);
1710 break;
1711 } else {
1712 DPRINTF("xhci: ep: using #%d\n", epctx->next_xfer);
1713 }
1714 length = xhci_ring_chain_length(xhci, &epctx->ring);
1715 if (length < 0) {
1716 DPRINTF("xhci: incomplete TD (%d TRBs)\n", -length);
1717 break;
1718 } else if (length == 0) {
1719 break;
1720 }
1721 DPRINTF("xhci: fetching %d-TRB TD\n", length);
1722 if (xfer->trbs && xfer->trb_alloced < length) {
1723 xfer->trb_count = 0;
1724 xfer->trb_alloced = 0;
1725 g_free(xfer->trbs);
1726 xfer->trbs = NULL;
1727 }
1728 if (!xfer->trbs) {
1729 xfer->trbs = g_malloc(sizeof(XHCITRB) * length);
1730 xfer->trb_alloced = length;
1731 }
1732 xfer->trb_count = length;
1733
1734 for (i = 0; i < length; i++) {
1735 assert(xhci_ring_fetch(xhci, &epctx->ring, &xfer->trbs[i], NULL));
1736 }
1737 xfer->xhci = xhci;
1738 xfer->epid = epid;
1739 xfer->slotid = slotid;
1740
1741 if (epid == 1) {
1742 if (xhci_fire_ctl_transfer(xhci, xfer) >= 0) {
1743 epctx->next_xfer = (epctx->next_xfer + 1) % TD_QUEUE;
1744 } else {
1745 fprintf(stderr, "xhci: error firing CTL transfer\n");
1746 }
1747 } else {
1748 if (xhci_fire_transfer(xhci, xfer, epctx) >= 0) {
1749 epctx->next_xfer = (epctx->next_xfer + 1) % TD_QUEUE;
1750 } else {
1751 fprintf(stderr, "xhci: error firing data transfer\n");
1752 }
1753 }
1754
1755 if (epctx->state == EP_HALTED) {
1756 DPRINTF("xhci: ep halted, stopping schedule\n");
1757 break;
1758 }
1759 if (xfer->running_retry) {
1760 DPRINTF("xhci: xfer nacked, stopping schedule\n");
1761 epctx->retry = xfer;
1762 break;
1763 }
1764 }
1765 }
1766
1767 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid)
1768 {
1769 assert(slotid >= 1 && slotid <= MAXSLOTS);
1770 DPRINTF("xhci_enable_slot(%d)\n", slotid);
1771 xhci->slots[slotid-1].enabled = 1;
1772 xhci->slots[slotid-1].port = 0;
1773 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31);
1774
1775 return CC_SUCCESS;
1776 }
1777
1778 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid)
1779 {
1780 int i;
1781
1782 assert(slotid >= 1 && slotid <= MAXSLOTS);
1783 DPRINTF("xhci_disable_slot(%d)\n", slotid);
1784
1785 for (i = 1; i <= 31; i++) {
1786 if (xhci->slots[slotid-1].eps[i-1]) {
1787 xhci_disable_ep(xhci, slotid, i);
1788 }
1789 }
1790
1791 xhci->slots[slotid-1].enabled = 0;
1792 return CC_SUCCESS;
1793 }
1794
1795 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
1796 uint64_t pictx, bool bsr)
1797 {
1798 XHCISlot *slot;
1799 USBDevice *dev;
1800 dma_addr_t ictx, octx, dcbaap;
1801 uint64_t poctx;
1802 uint32_t ictl_ctx[2];
1803 uint32_t slot_ctx[4];
1804 uint32_t ep0_ctx[5];
1805 unsigned int port;
1806 int i;
1807 TRBCCode res;
1808
1809 assert(slotid >= 1 && slotid <= MAXSLOTS);
1810 DPRINTF("xhci_address_slot(%d)\n", slotid);
1811
1812 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);
1813 pci_dma_read(&xhci->pci_dev, dcbaap + 8*slotid, &poctx, sizeof(poctx));
1814 ictx = xhci_mask64(pictx);
1815 octx = xhci_mask64(le64_to_cpu(poctx));
1816
1817 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
1818 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
1819
1820 pci_dma_read(&xhci->pci_dev, ictx, ictl_ctx, sizeof(ictl_ctx));
1821
1822 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) {
1823 fprintf(stderr, "xhci: invalid input context control %08x %08x\n",
1824 ictl_ctx[0], ictl_ctx[1]);
1825 return CC_TRB_ERROR;
1826 }
1827
1828 pci_dma_read(&xhci->pci_dev, ictx+32, slot_ctx, sizeof(slot_ctx));
1829 pci_dma_read(&xhci->pci_dev, ictx+64, ep0_ctx, sizeof(ep0_ctx));
1830
1831 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
1832 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
1833
1834 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
1835 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
1836
1837 port = (slot_ctx[1]>>16) & 0xFF;
1838 dev = xhci->ports[port-1].port.dev;
1839
1840 if (port < 1 || port > MAXPORTS) {
1841 fprintf(stderr, "xhci: bad port %d\n", port);
1842 return CC_TRB_ERROR;
1843 } else if (!dev) {
1844 fprintf(stderr, "xhci: port %d not connected\n", port);
1845 return CC_USB_TRANSACTION_ERROR;
1846 }
1847
1848 for (i = 0; i < MAXSLOTS; i++) {
1849 if (xhci->slots[i].port == port) {
1850 fprintf(stderr, "xhci: port %d already assigned to slot %d\n",
1851 port, i+1);
1852 return CC_TRB_ERROR;
1853 }
1854 }
1855
1856 slot = &xhci->slots[slotid-1];
1857 slot->port = port;
1858 slot->ctx = octx;
1859
1860 if (bsr) {
1861 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT;
1862 } else {
1863 slot->devaddr = xhci->devaddr++;
1864 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slot->devaddr;
1865 DPRINTF("xhci: device address is %d\n", slot->devaddr);
1866 usb_device_handle_control(dev, NULL,
1867 DeviceOutRequest | USB_REQ_SET_ADDRESS,
1868 slot->devaddr, 0, 0, NULL);
1869 }
1870
1871 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx);
1872
1873 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
1874 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
1875 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
1876 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
1877
1878 pci_dma_write(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
1879 pci_dma_write(&xhci->pci_dev, octx+32, ep0_ctx, sizeof(ep0_ctx));
1880
1881 return res;
1882 }
1883
1884
1885 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid,
1886 uint64_t pictx, bool dc)
1887 {
1888 dma_addr_t ictx, octx;
1889 uint32_t ictl_ctx[2];
1890 uint32_t slot_ctx[4];
1891 uint32_t islot_ctx[4];
1892 uint32_t ep_ctx[5];
1893 int i;
1894 TRBCCode res;
1895
1896 assert(slotid >= 1 && slotid <= MAXSLOTS);
1897 DPRINTF("xhci_configure_slot(%d)\n", slotid);
1898
1899 ictx = xhci_mask64(pictx);
1900 octx = xhci->slots[slotid-1].ctx;
1901
1902 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
1903 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
1904
1905 if (dc) {
1906 for (i = 2; i <= 31; i++) {
1907 if (xhci->slots[slotid-1].eps[i-1]) {
1908 xhci_disable_ep(xhci, slotid, i);
1909 }
1910 }
1911
1912 pci_dma_read(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
1913 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
1914 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT;
1915 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
1916 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
1917 pci_dma_write(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
1918
1919 return CC_SUCCESS;
1920 }
1921
1922 pci_dma_read(&xhci->pci_dev, ictx, ictl_ctx, sizeof(ictl_ctx));
1923
1924 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) {
1925 fprintf(stderr, "xhci: invalid input context control %08x %08x\n",
1926 ictl_ctx[0], ictl_ctx[1]);
1927 return CC_TRB_ERROR;
1928 }
1929
1930 pci_dma_read(&xhci->pci_dev, ictx+32, islot_ctx, sizeof(islot_ctx));
1931 pci_dma_read(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
1932
1933 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) {
1934 fprintf(stderr, "xhci: invalid slot state %08x\n", slot_ctx[3]);
1935 return CC_CONTEXT_STATE_ERROR;
1936 }
1937
1938 for (i = 2; i <= 31; i++) {
1939 if (ictl_ctx[0] & (1<<i)) {
1940 xhci_disable_ep(xhci, slotid, i);
1941 }
1942 if (ictl_ctx[1] & (1<<i)) {
1943 pci_dma_read(&xhci->pci_dev, ictx+32+(32*i), ep_ctx,
1944 sizeof(ep_ctx));
1945 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n",
1946 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
1947 ep_ctx[3], ep_ctx[4]);
1948 xhci_disable_ep(xhci, slotid, i);
1949 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx);
1950 if (res != CC_SUCCESS) {
1951 return res;
1952 }
1953 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n",
1954 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2],
1955 ep_ctx[3], ep_ctx[4]);
1956 pci_dma_write(&xhci->pci_dev, octx+(32*i), ep_ctx, sizeof(ep_ctx));
1957 }
1958 }
1959
1960 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
1961 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT;
1962 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT);
1963 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK <<
1964 SLOT_CONTEXT_ENTRIES_SHIFT);
1965 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
1966 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
1967
1968 pci_dma_write(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
1969
1970 return CC_SUCCESS;
1971 }
1972
1973
1974 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid,
1975 uint64_t pictx)
1976 {
1977 dma_addr_t ictx, octx;
1978 uint32_t ictl_ctx[2];
1979 uint32_t iep0_ctx[5];
1980 uint32_t ep0_ctx[5];
1981 uint32_t islot_ctx[4];
1982 uint32_t slot_ctx[4];
1983
1984 assert(slotid >= 1 && slotid <= MAXSLOTS);
1985 DPRINTF("xhci_evaluate_slot(%d)\n", slotid);
1986
1987 ictx = xhci_mask64(pictx);
1988 octx = xhci->slots[slotid-1].ctx;
1989
1990 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx);
1991 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
1992
1993 pci_dma_read(&xhci->pci_dev, ictx, ictl_ctx, sizeof(ictl_ctx));
1994
1995 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) {
1996 fprintf(stderr, "xhci: invalid input context control %08x %08x\n",
1997 ictl_ctx[0], ictl_ctx[1]);
1998 return CC_TRB_ERROR;
1999 }
2000
2001 if (ictl_ctx[1] & 0x1) {
2002 pci_dma_read(&xhci->pci_dev, ictx+32, islot_ctx, sizeof(islot_ctx));
2003
2004 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n",
2005 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]);
2006
2007 pci_dma_read(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
2008
2009 slot_ctx[1] &= ~0xFFFF; /* max exit latency */
2010 slot_ctx[1] |= islot_ctx[1] & 0xFFFF;
2011 slot_ctx[2] &= ~0xFF00000; /* interrupter target */
2012 slot_ctx[2] |= islot_ctx[2] & 0xFF000000;
2013
2014 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2015 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2016
2017 pci_dma_write(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
2018 }
2019
2020 if (ictl_ctx[1] & 0x2) {
2021 pci_dma_read(&xhci->pci_dev, ictx+64, iep0_ctx, sizeof(iep0_ctx));
2022
2023 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n",
2024 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2],
2025 iep0_ctx[3], iep0_ctx[4]);
2026
2027 pci_dma_read(&xhci->pci_dev, octx+32, ep0_ctx, sizeof(ep0_ctx));
2028
2029 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/
2030 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000;
2031
2032 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n",
2033 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]);
2034
2035 pci_dma_write(&xhci->pci_dev, octx+32, ep0_ctx, sizeof(ep0_ctx));
2036 }
2037
2038 return CC_SUCCESS;
2039 }
2040
2041 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid)
2042 {
2043 uint32_t slot_ctx[4];
2044 dma_addr_t octx;
2045 int i;
2046
2047 assert(slotid >= 1 && slotid <= MAXSLOTS);
2048 DPRINTF("xhci_reset_slot(%d)\n", slotid);
2049
2050 octx = xhci->slots[slotid-1].ctx;
2051
2052 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx);
2053
2054 for (i = 2; i <= 31; i++) {
2055 if (xhci->slots[slotid-1].eps[i-1]) {
2056 xhci_disable_ep(xhci, slotid, i);
2057 }
2058 }
2059
2060 pci_dma_read(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
2061 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT);
2062 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT;
2063 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n",
2064 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]);
2065 pci_dma_write(&xhci->pci_dev, octx, slot_ctx, sizeof(slot_ctx));
2066
2067 return CC_SUCCESS;
2068 }
2069
2070 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb)
2071 {
2072 unsigned int slotid;
2073 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK;
2074 if (slotid < 1 || slotid > MAXSLOTS) {
2075 fprintf(stderr, "xhci: bad slot id %d\n", slotid);
2076 event->ccode = CC_TRB_ERROR;
2077 return 0;
2078 } else if (!xhci->slots[slotid-1].enabled) {
2079 fprintf(stderr, "xhci: slot id %d not enabled\n", slotid);
2080 event->ccode = CC_SLOT_NOT_ENABLED_ERROR;
2081 return 0;
2082 }
2083 return slotid;
2084 }
2085
2086 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx)
2087 {
2088 dma_addr_t ctx;
2089 uint8_t bw_ctx[MAXPORTS+1];
2090
2091 DPRINTF("xhci_get_port_bandwidth()\n");
2092
2093 ctx = xhci_mask64(pctx);
2094
2095 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx);
2096
2097 /* TODO: actually implement real values here */
2098 bw_ctx[0] = 0;
2099 memset(&bw_ctx[1], 80, MAXPORTS); /* 80% */
2100 pci_dma_write(&xhci->pci_dev, ctx, bw_ctx, sizeof(bw_ctx));
2101
2102 return CC_SUCCESS;
2103 }
2104
2105 static uint32_t rotl(uint32_t v, unsigned count)
2106 {
2107 count &= 31;
2108 return (v << count) | (v >> (32 - count));
2109 }
2110
2111
2112 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo)
2113 {
2114 uint32_t val;
2115 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F));
2116 val += rotl(lo + 0x49434878, hi & 0x1F);
2117 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F);
2118 return ~val;
2119 }
2120
2121 static void xhci_via_challenge(XHCIState *xhci, uint64_t addr)
2122 {
2123 uint32_t buf[8];
2124 uint32_t obuf[8];
2125 dma_addr_t paddr = xhci_mask64(addr);
2126
2127 pci_dma_read(&xhci->pci_dev, paddr, &buf, 32);
2128
2129 memcpy(obuf, buf, sizeof(obuf));
2130
2131 if ((buf[0] & 0xff) == 2) {
2132 obuf[0] = 0x49932000 + 0x54dc200 * buf[2] + 0x7429b578 * buf[3];
2133 obuf[0] |= (buf[2] * buf[3]) & 0xff;
2134 obuf[1] = 0x0132bb37 + 0xe89 * buf[2] + 0xf09 * buf[3];
2135 obuf[2] = 0x0066c2e9 + 0x2091 * buf[2] + 0x19bd * buf[3];
2136 obuf[3] = 0xd5281342 + 0x2cc9691 * buf[2] + 0x2367662 * buf[3];
2137 obuf[4] = 0x0123c75c + 0x1595 * buf[2] + 0x19ec * buf[3];
2138 obuf[5] = 0x00f695de + 0x26fd * buf[2] + 0x3e9 * buf[3];
2139 obuf[6] = obuf[2] ^ obuf[3] ^ 0x29472956;
2140 obuf[7] = obuf[2] ^ obuf[3] ^ 0x65866593;
2141 }
2142
2143 pci_dma_write(&xhci->pci_dev, paddr, &obuf, 32);
2144 }
2145
2146 static void xhci_process_commands(XHCIState *xhci)
2147 {
2148 XHCITRB trb;
2149 TRBType type;
2150 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS};
2151 dma_addr_t addr;
2152 unsigned int i, slotid = 0;
2153
2154 DPRINTF("xhci_process_commands()\n");
2155 if (!xhci_running(xhci)) {
2156 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n");
2157 return;
2158 }
2159
2160 xhci->crcr_low |= CRCR_CRR;
2161
2162 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) {
2163 event.ptr = addr;
2164 switch (type) {
2165 case CR_ENABLE_SLOT:
2166 for (i = 0; i < MAXSLOTS; i++) {
2167 if (!xhci->slots[i].enabled) {
2168 break;
2169 }
2170 }
2171 if (i >= MAXSLOTS) {
2172 fprintf(stderr, "xhci: no device slots available\n");
2173 event.ccode = CC_NO_SLOTS_ERROR;
2174 } else {
2175 slotid = i+1;
2176 event.ccode = xhci_enable_slot(xhci, slotid);
2177 }
2178 break;
2179 case CR_DISABLE_SLOT:
2180 slotid = xhci_get_slot(xhci, &event, &trb);
2181 if (slotid) {
2182 event.ccode = xhci_disable_slot(xhci, slotid);
2183 }
2184 break;
2185 case CR_ADDRESS_DEVICE:
2186 slotid = xhci_get_slot(xhci, &event, &trb);
2187 if (slotid) {
2188 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter,
2189 trb.control & TRB_CR_BSR);
2190 }
2191 break;
2192 case CR_CONFIGURE_ENDPOINT:
2193 slotid = xhci_get_slot(xhci, &event, &trb);
2194 if (slotid) {
2195 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter,
2196 trb.control & TRB_CR_DC);
2197 }
2198 break;
2199 case CR_EVALUATE_CONTEXT:
2200 slotid = xhci_get_slot(xhci, &event, &trb);
2201 if (slotid) {
2202 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter);
2203 }
2204 break;
2205 case CR_STOP_ENDPOINT:
2206 slotid = xhci_get_slot(xhci, &event, &trb);
2207 if (slotid) {
2208 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2209 & TRB_CR_EPID_MASK;
2210 event.ccode = xhci_stop_ep(xhci, slotid, epid);
2211 }
2212 break;
2213 case CR_RESET_ENDPOINT:
2214 slotid = xhci_get_slot(xhci, &event, &trb);
2215 if (slotid) {
2216 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2217 & TRB_CR_EPID_MASK;
2218 event.ccode = xhci_reset_ep(xhci, slotid, epid);
2219 }
2220 break;
2221 case CR_SET_TR_DEQUEUE:
2222 slotid = xhci_get_slot(xhci, &event, &trb);
2223 if (slotid) {
2224 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT)
2225 & TRB_CR_EPID_MASK;
2226 event.ccode = xhci_set_ep_dequeue(xhci, slotid, epid,
2227 trb.parameter);
2228 }
2229 break;
2230 case CR_RESET_DEVICE:
2231 slotid = xhci_get_slot(xhci, &event, &trb);
2232 if (slotid) {
2233 event.ccode = xhci_reset_slot(xhci, slotid);
2234 }
2235 break;
2236 case CR_GET_PORT_BANDWIDTH:
2237 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter);
2238 break;
2239 case CR_VENDOR_VIA_CHALLENGE_RESPONSE:
2240 xhci_via_challenge(xhci, trb.parameter);
2241 break;
2242 case CR_VENDOR_NEC_FIRMWARE_REVISION:
2243 event.type = 48; /* NEC reply */
2244 event.length = 0x3025;
2245 break;
2246 case CR_VENDOR_NEC_CHALLENGE_RESPONSE:
2247 {
2248 uint32_t chi = trb.parameter >> 32;
2249 uint32_t clo = trb.parameter;
2250 uint32_t val = xhci_nec_challenge(chi, clo);
2251 event.length = val & 0xFFFF;
2252 event.epid = val >> 16;
2253 slotid = val >> 24;
2254 event.type = 48; /* NEC reply */
2255 }
2256 break;
2257 default:
2258 fprintf(stderr, "xhci: unimplemented command %d\n", type);
2259 event.ccode = CC_TRB_ERROR;
2260 break;
2261 }
2262 event.slotid = slotid;
2263 xhci_event(xhci, &event);
2264 }
2265 }
2266
2267 static void xhci_update_port(XHCIState *xhci, XHCIPort *port, int is_detach)
2268 {
2269 int nr = port->port.index + 1;
2270
2271 port->portsc = PORTSC_PP;
2272 if (port->port.dev && port->port.dev->attached && !is_detach) {
2273 port->portsc |= PORTSC_CCS;
2274 switch (port->port.dev->speed) {
2275 case USB_SPEED_LOW:
2276 port->portsc |= PORTSC_SPEED_LOW;
2277 break;
2278 case USB_SPEED_FULL:
2279 port->portsc |= PORTSC_SPEED_FULL;
2280 break;
2281 case USB_SPEED_HIGH:
2282 port->portsc |= PORTSC_SPEED_HIGH;
2283 break;
2284 }
2285 }
2286
2287 if (xhci_running(xhci)) {
2288 port->portsc |= PORTSC_CSC;
2289 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS, nr << 24};
2290 xhci_event(xhci, &ev);
2291 DPRINTF("xhci: port change event for port %d\n", nr);
2292 }
2293 }
2294
2295 static void xhci_reset(DeviceState *dev)
2296 {
2297 XHCIState *xhci = DO_UPCAST(XHCIState, pci_dev.qdev, dev);
2298 int i;
2299
2300 trace_usb_xhci_reset();
2301 if (!(xhci->usbsts & USBSTS_HCH)) {
2302 fprintf(stderr, "xhci: reset while running!\n");
2303 }
2304
2305 xhci->usbcmd = 0;
2306 xhci->usbsts = USBSTS_HCH;
2307 xhci->dnctrl = 0;
2308 xhci->crcr_low = 0;
2309 xhci->crcr_high = 0;
2310 xhci->dcbaap_low = 0;
2311 xhci->dcbaap_high = 0;
2312 xhci->config = 0;
2313 xhci->devaddr = 2;
2314
2315 for (i = 0; i < MAXSLOTS; i++) {
2316 xhci_disable_slot(xhci, i+1);
2317 }
2318
2319 for (i = 0; i < MAXPORTS; i++) {
2320 xhci_update_port(xhci, xhci->ports + i, 0);
2321 }
2322
2323 xhci->mfindex = 0;
2324 xhci->iman = 0;
2325 xhci->imod = 0;
2326 xhci->erstsz = 0;
2327 xhci->erstba_low = 0;
2328 xhci->erstba_high = 0;
2329 xhci->erdp_low = 0;
2330 xhci->erdp_high = 0;
2331
2332 xhci->er_ep_idx = 0;
2333 xhci->er_pcs = 1;
2334 xhci->er_full = 0;
2335 xhci->ev_buffer_put = 0;
2336 xhci->ev_buffer_get = 0;
2337 }
2338
2339 static uint32_t xhci_cap_read(XHCIState *xhci, uint32_t reg)
2340 {
2341 uint32_t ret;
2342
2343 switch (reg) {
2344 case 0x00: /* HCIVERSION, CAPLENGTH */
2345 ret = 0x01000000 | LEN_CAP;
2346 break;
2347 case 0x04: /* HCSPARAMS 1 */
2348 ret = (MAXPORTS<<24) | (MAXINTRS<<8) | MAXSLOTS;
2349 break;
2350 case 0x08: /* HCSPARAMS 2 */
2351 ret = 0x0000000f;
2352 break;
2353 case 0x0c: /* HCSPARAMS 3 */
2354 ret = 0x00000000;
2355 break;
2356 case 0x10: /* HCCPARAMS */
2357 if (sizeof(dma_addr_t) == 4) {
2358 ret = 0x00081000;
2359 } else {
2360 ret = 0x00081001;
2361 }
2362 break;
2363 case 0x14: /* DBOFF */
2364 ret = OFF_DOORBELL;
2365 break;
2366 case 0x18: /* RTSOFF */
2367 ret = OFF_RUNTIME;
2368 break;
2369
2370 /* extended capabilities */
2371 case 0x20: /* Supported Protocol:00 */
2372 ret = 0x02000402; /* USB 2.0 */
2373 break;
2374 case 0x24: /* Supported Protocol:04 */
2375 ret = 0x20425455; /* "USB " */
2376 break;
2377 case 0x28: /* Supported Protocol:08 */
2378 ret = 0x00000001 | (USB2_PORTS<<8);
2379 break;
2380 case 0x2c: /* Supported Protocol:0c */
2381 ret = 0x00000000; /* reserved */
2382 break;
2383 case 0x30: /* Supported Protocol:00 */
2384 ret = 0x03000002; /* USB 3.0 */
2385 break;
2386 case 0x34: /* Supported Protocol:04 */
2387 ret = 0x20425455; /* "USB " */
2388 break;
2389 case 0x38: /* Supported Protocol:08 */
2390 ret = 0x00000000 | (USB2_PORTS+1) | (USB3_PORTS<<8);
2391 break;
2392 case 0x3c: /* Supported Protocol:0c */
2393 ret = 0x00000000; /* reserved */
2394 break;
2395 default:
2396 fprintf(stderr, "xhci_cap_read: reg %d unimplemented\n", reg);
2397 ret = 0;
2398 }
2399
2400 trace_usb_xhci_cap_read(reg, ret);
2401 return ret;
2402 }
2403
2404 static uint32_t xhci_port_read(XHCIState *xhci, uint32_t reg)
2405 {
2406 uint32_t port = reg >> 4;
2407 uint32_t ret;
2408
2409 if (port >= MAXPORTS) {
2410 fprintf(stderr, "xhci_port_read: port %d out of bounds\n", port);
2411 ret = 0;
2412 goto out;
2413 }
2414
2415 switch (reg & 0xf) {
2416 case 0x00: /* PORTSC */
2417 ret = xhci->ports[port].portsc;
2418 break;
2419 case 0x04: /* PORTPMSC */
2420 case 0x08: /* PORTLI */
2421 ret = 0;
2422 break;
2423 case 0x0c: /* reserved */
2424 default:
2425 fprintf(stderr, "xhci_port_read (port %d): reg 0x%x unimplemented\n",
2426 port, reg);
2427 ret = 0;
2428 }
2429
2430 out:
2431 trace_usb_xhci_port_read(port, reg & 0x0f, ret);
2432 return ret;
2433 }
2434
2435 static void xhci_port_write(XHCIState *xhci, uint32_t reg, uint32_t val)
2436 {
2437 uint32_t port = reg >> 4;
2438 uint32_t portsc;
2439
2440 trace_usb_xhci_port_write(port, reg & 0x0f, val);
2441
2442 if (port >= MAXPORTS) {
2443 fprintf(stderr, "xhci_port_read: port %d out of bounds\n", port);
2444 return;
2445 }
2446
2447 switch (reg & 0xf) {
2448 case 0x00: /* PORTSC */
2449 portsc = xhci->ports[port].portsc;
2450 /* write-1-to-clear bits*/
2451 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC|
2452 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
2453 if (val & PORTSC_LWS) {
2454 /* overwrite PLS only when LWS=1 */
2455 portsc &= ~(PORTSC_PLS_MASK << PORTSC_PLS_SHIFT);
2456 portsc |= val & (PORTSC_PLS_MASK << PORTSC_PLS_SHIFT);
2457 }
2458 /* read/write bits */
2459 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
2460 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE));
2461 /* write-1-to-start bits */
2462 if (val & PORTSC_PR) {
2463 DPRINTF("xhci: port %d reset\n", port);
2464 usb_device_reset(xhci->ports[port].port.dev);
2465 portsc |= PORTSC_PRC | PORTSC_PED;
2466 }
2467 xhci->ports[port].portsc = portsc;
2468 break;
2469 case 0x04: /* PORTPMSC */
2470 case 0x08: /* PORTLI */
2471 default:
2472 fprintf(stderr, "xhci_port_write (port %d): reg 0x%x unimplemented\n",
2473 port, reg);
2474 }
2475 }
2476
2477 static uint32_t xhci_oper_read(XHCIState *xhci, uint32_t reg)
2478 {
2479 uint32_t ret;
2480
2481 if (reg >= 0x400) {
2482 return xhci_port_read(xhci, reg - 0x400);
2483 }
2484
2485 switch (reg) {
2486 case 0x00: /* USBCMD */
2487 ret = xhci->usbcmd;
2488 break;
2489 case 0x04: /* USBSTS */
2490 ret = xhci->usbsts;
2491 break;
2492 case 0x08: /* PAGESIZE */
2493 ret = 1; /* 4KiB */
2494 break;
2495 case 0x14: /* DNCTRL */
2496 ret = xhci->dnctrl;
2497 break;
2498 case 0x18: /* CRCR low */
2499 ret = xhci->crcr_low & ~0xe;
2500 break;
2501 case 0x1c: /* CRCR high */
2502 ret = xhci->crcr_high;
2503 break;
2504 case 0x30: /* DCBAAP low */
2505 ret = xhci->dcbaap_low;
2506 break;
2507 case 0x34: /* DCBAAP high */
2508 ret = xhci->dcbaap_high;
2509 break;
2510 case 0x38: /* CONFIG */
2511 ret = xhci->config;
2512 break;
2513 default:
2514 fprintf(stderr, "xhci_oper_read: reg 0x%x unimplemented\n", reg);
2515 ret = 0;
2516 }
2517
2518 trace_usb_xhci_oper_read(reg, ret);
2519 return ret;
2520 }
2521
2522 static void xhci_oper_write(XHCIState *xhci, uint32_t reg, uint32_t val)
2523 {
2524 if (reg >= 0x400) {
2525 xhci_port_write(xhci, reg - 0x400, val);
2526 return;
2527 }
2528
2529 trace_usb_xhci_oper_write(reg, val);
2530
2531 switch (reg) {
2532 case 0x00: /* USBCMD */
2533 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) {
2534 xhci_run(xhci);
2535 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) {
2536 xhci_stop(xhci);
2537 }
2538 xhci->usbcmd = val & 0xc0f;
2539 if (val & USBCMD_HCRST) {
2540 xhci_reset(&xhci->pci_dev.qdev);
2541 }
2542 xhci_irq_update(xhci);
2543 break;
2544
2545 case 0x04: /* USBSTS */
2546 /* these bits are write-1-to-clear */
2547 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE));
2548 xhci_irq_update(xhci);
2549 break;
2550
2551 case 0x14: /* DNCTRL */
2552 xhci->dnctrl = val & 0xffff;
2553 break;
2554 case 0x18: /* CRCR low */
2555 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR);
2556 break;
2557 case 0x1c: /* CRCR high */
2558 xhci->crcr_high = val;
2559 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) {
2560 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED};
2561 xhci->crcr_low &= ~CRCR_CRR;
2562 xhci_event(xhci, &event);
2563 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low);
2564 } else {
2565 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val);
2566 xhci_ring_init(xhci, &xhci->cmd_ring, base);
2567 }
2568 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS);
2569 break;
2570 case 0x30: /* DCBAAP low */
2571 xhci->dcbaap_low = val & 0xffffffc0;
2572 break;
2573 case 0x34: /* DCBAAP high */
2574 xhci->dcbaap_high = val;
2575 break;
2576 case 0x38: /* CONFIG */
2577 xhci->config = val & 0xff;
2578 break;
2579 default:
2580 fprintf(stderr, "xhci_oper_write: reg 0x%x unimplemented\n", reg);
2581 }
2582 }
2583
2584 static uint32_t xhci_runtime_read(XHCIState *xhci, uint32_t reg)
2585 {
2586 uint32_t ret;
2587
2588 switch (reg) {
2589 case 0x00: /* MFINDEX */
2590 fprintf(stderr, "xhci_runtime_read: MFINDEX not yet implemented\n");
2591 ret = xhci->mfindex;
2592 break;
2593 case 0x20: /* IMAN */
2594 ret = xhci->iman;
2595 break;
2596 case 0x24: /* IMOD */
2597 ret = xhci->imod;
2598 break;
2599 case 0x28: /* ERSTSZ */
2600 ret = xhci->erstsz;
2601 break;
2602 case 0x30: /* ERSTBA low */
2603 ret = xhci->erstba_low;
2604 break;
2605 case 0x34: /* ERSTBA high */
2606 ret = xhci->erstba_high;
2607 break;
2608 case 0x38: /* ERDP low */
2609 ret = xhci->erdp_low;
2610 break;
2611 case 0x3c: /* ERDP high */
2612 ret = xhci->erdp_high;
2613 break;
2614 default:
2615 fprintf(stderr, "xhci_runtime_read: reg 0x%x unimplemented\n", reg);
2616 ret = 0;
2617 }
2618
2619 trace_usb_xhci_runtime_read(reg, ret);
2620 return ret;
2621 }
2622
2623 static void xhci_runtime_write(XHCIState *xhci, uint32_t reg, uint32_t val)
2624 {
2625 trace_usb_xhci_runtime_read(reg, val);
2626
2627 switch (reg) {
2628 case 0x20: /* IMAN */
2629 if (val & IMAN_IP) {
2630 xhci->iman &= ~IMAN_IP;
2631 }
2632 xhci->iman &= ~IMAN_IE;
2633 xhci->iman |= val & IMAN_IE;
2634 xhci_irq_update(xhci);
2635 break;
2636 case 0x24: /* IMOD */
2637 xhci->imod = val;
2638 break;
2639 case 0x28: /* ERSTSZ */
2640 xhci->erstsz = val & 0xffff;
2641 break;
2642 case 0x30: /* ERSTBA low */
2643 /* XXX NEC driver bug: it doesn't align this to 64 bytes
2644 xhci->erstba_low = val & 0xffffffc0; */
2645 xhci->erstba_low = val & 0xfffffff0;
2646 break;
2647 case 0x34: /* ERSTBA high */
2648 xhci->erstba_high = val;
2649 xhci_er_reset(xhci);
2650 break;
2651 case 0x38: /* ERDP low */
2652 if (val & ERDP_EHB) {
2653 xhci->erdp_low &= ~ERDP_EHB;
2654 }
2655 xhci->erdp_low = (val & ~ERDP_EHB) | (xhci->erdp_low & ERDP_EHB);
2656 break;
2657 case 0x3c: /* ERDP high */
2658 xhci->erdp_high = val;
2659 xhci_events_update(xhci);
2660 break;
2661 default:
2662 fprintf(stderr, "xhci_oper_write: reg 0x%x unimplemented\n", reg);
2663 }
2664 }
2665
2666 static uint32_t xhci_doorbell_read(XHCIState *xhci, uint32_t reg)
2667 {
2668 /* doorbells always read as 0 */
2669 trace_usb_xhci_doorbell_read(reg, 0);
2670 return 0;
2671 }
2672
2673 static void xhci_doorbell_write(XHCIState *xhci, uint32_t reg, uint32_t val)
2674 {
2675 trace_usb_xhci_doorbell_write(reg, val);
2676
2677 if (!xhci_running(xhci)) {
2678 fprintf(stderr, "xhci: wrote doorbell while xHC stopped or paused\n");
2679 return;
2680 }
2681
2682 reg >>= 2;
2683
2684 if (reg == 0) {
2685 if (val == 0) {
2686 xhci_process_commands(xhci);
2687 } else {
2688 fprintf(stderr, "xhci: bad doorbell 0 write: 0x%x\n", val);
2689 }
2690 } else {
2691 if (reg > MAXSLOTS) {
2692 fprintf(stderr, "xhci: bad doorbell %d\n", reg);
2693 } else if (val > 31) {
2694 fprintf(stderr, "xhci: bad doorbell %d write: 0x%x\n", reg, val);
2695 } else {
2696 xhci_kick_ep(xhci, reg, val);
2697 }
2698 }
2699 }
2700
2701 static uint64_t xhci_mem_read(void *ptr, target_phys_addr_t addr,
2702 unsigned size)
2703 {
2704 XHCIState *xhci = ptr;
2705
2706 /* Only aligned reads are allowed on xHCI */
2707 if (addr & 3) {
2708 fprintf(stderr, "xhci_mem_read: Mis-aligned read\n");
2709 return 0;
2710 }
2711
2712 if (addr < LEN_CAP) {
2713 return xhci_cap_read(xhci, addr);
2714 } else if (addr >= OFF_OPER && addr < (OFF_OPER + LEN_OPER)) {
2715 return xhci_oper_read(xhci, addr - OFF_OPER);
2716 } else if (addr >= OFF_RUNTIME && addr < (OFF_RUNTIME + LEN_RUNTIME)) {
2717 return xhci_runtime_read(xhci, addr - OFF_RUNTIME);
2718 } else if (addr >= OFF_DOORBELL && addr < (OFF_DOORBELL + LEN_DOORBELL)) {
2719 return xhci_doorbell_read(xhci, addr - OFF_DOORBELL);
2720 } else {
2721 fprintf(stderr, "xhci_mem_read: Bad offset %x\n", (int)addr);
2722 return 0;
2723 }
2724 }
2725
2726 static void xhci_mem_write(void *ptr, target_phys_addr_t addr,
2727 uint64_t val, unsigned size)
2728 {
2729 XHCIState *xhci = ptr;
2730
2731 /* Only aligned writes are allowed on xHCI */
2732 if (addr & 3) {
2733 fprintf(stderr, "xhci_mem_write: Mis-aligned write\n");
2734 return;
2735 }
2736
2737 if (addr >= OFF_OPER && addr < (OFF_OPER + LEN_OPER)) {
2738 xhci_oper_write(xhci, addr - OFF_OPER, val);
2739 } else if (addr >= OFF_RUNTIME && addr < (OFF_RUNTIME + LEN_RUNTIME)) {
2740 xhci_runtime_write(xhci, addr - OFF_RUNTIME, val);
2741 } else if (addr >= OFF_DOORBELL && addr < (OFF_DOORBELL + LEN_DOORBELL)) {
2742 xhci_doorbell_write(xhci, addr - OFF_DOORBELL, val);
2743 } else {
2744 fprintf(stderr, "xhci_mem_write: Bad offset %x\n", (int)addr);
2745 }
2746 }
2747
2748 static const MemoryRegionOps xhci_mem_ops = {
2749 .read = xhci_mem_read,
2750 .write = xhci_mem_write,
2751 .valid.min_access_size = 4,
2752 .valid.max_access_size = 4,
2753 .endianness = DEVICE_LITTLE_ENDIAN,
2754 };
2755
2756 static void xhci_attach(USBPort *usbport)
2757 {
2758 XHCIState *xhci = usbport->opaque;
2759 XHCIPort *port = &xhci->ports[usbport->index];
2760
2761 xhci_update_port(xhci, port, 0);
2762 }
2763
2764 static void xhci_detach(USBPort *usbport)
2765 {
2766 XHCIState *xhci = usbport->opaque;
2767 XHCIPort *port = &xhci->ports[usbport->index];
2768
2769 xhci_update_port(xhci, port, 1);
2770 }
2771
2772 static void xhci_wakeup(USBPort *usbport)
2773 {
2774 XHCIState *xhci = usbport->opaque;
2775 XHCIPort *port = &xhci->ports[usbport->index];
2776 int nr = port->port.index + 1;
2777 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS, nr << 24};
2778 uint32_t pls;
2779
2780 pls = (port->portsc >> PORTSC_PLS_SHIFT) & PORTSC_PLS_MASK;
2781 if (pls != 3) {
2782 return;
2783 }
2784 port->portsc |= 0xf << PORTSC_PLS_SHIFT;
2785 if (port->portsc & PORTSC_PLC) {
2786 return;
2787 }
2788 port->portsc |= PORTSC_PLC;
2789 xhci_event(xhci, &ev);
2790 }
2791
2792 static void xhci_complete(USBPort *port, USBPacket *packet)
2793 {
2794 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet);
2795
2796 xhci_complete_packet(xfer, packet->result);
2797 xhci_kick_ep(xfer->xhci, xfer->slotid, xfer->epid);
2798 }
2799
2800 static void xhci_child_detach(USBPort *port, USBDevice *child)
2801 {
2802 FIXME();
2803 }
2804
2805 static USBPortOps xhci_port_ops = {
2806 .attach = xhci_attach,
2807 .detach = xhci_detach,
2808 .wakeup = xhci_wakeup,
2809 .complete = xhci_complete,
2810 .child_detach = xhci_child_detach,
2811 };
2812
2813 static int xhci_find_slotid(XHCIState *xhci, USBDevice *dev)
2814 {
2815 XHCISlot *slot;
2816 int slotid;
2817
2818 for (slotid = 1; slotid <= MAXSLOTS; slotid++) {
2819 slot = &xhci->slots[slotid-1];
2820 if (slot->devaddr == dev->addr) {
2821 return slotid;
2822 }
2823 }
2824 return 0;
2825 }
2826
2827 static int xhci_find_epid(USBEndpoint *ep)
2828 {
2829 if (ep->nr == 0) {
2830 return 1;
2831 }
2832 if (ep->pid == USB_TOKEN_IN) {
2833 return ep->nr * 2 + 1;
2834 } else {
2835 return ep->nr * 2;
2836 }
2837 }
2838
2839 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep)
2840 {
2841 XHCIState *xhci = container_of(bus, XHCIState, bus);
2842 int slotid;
2843
2844 DPRINTF("%s\n", __func__);
2845 slotid = xhci_find_slotid(xhci, ep->dev);
2846 if (slotid == 0 || !xhci->slots[slotid-1].enabled) {
2847 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr);
2848 return;
2849 }
2850 xhci_kick_ep(xhci, slotid, xhci_find_epid(ep));
2851 }
2852
2853 static USBBusOps xhci_bus_ops = {
2854 .wakeup_endpoint = xhci_wakeup_endpoint,
2855 };
2856
2857 static void usb_xhci_init(XHCIState *xhci, DeviceState *dev)
2858 {
2859 int i;
2860
2861 xhci->usbsts = USBSTS_HCH;
2862
2863 usb_bus_new(&xhci->bus, &xhci_bus_ops, &xhci->pci_dev.qdev);
2864
2865 for (i = 0; i < MAXPORTS; i++) {
2866 memset(&xhci->ports[i], 0, sizeof(xhci->ports[i]));
2867 usb_register_port(&xhci->bus, &xhci->ports[i].port, xhci, i,
2868 &xhci_port_ops,
2869 USB_SPEED_MASK_LOW |
2870 USB_SPEED_MASK_FULL |
2871 USB_SPEED_MASK_HIGH);
2872 }
2873 for (i = 0; i < MAXSLOTS; i++) {
2874 xhci->slots[i].enabled = 0;
2875 }
2876 }
2877
2878 static int usb_xhci_initfn(struct PCIDevice *dev)
2879 {
2880 int ret;
2881
2882 XHCIState *xhci = DO_UPCAST(XHCIState, pci_dev, dev);
2883
2884 xhci->pci_dev.config[PCI_CLASS_PROG] = 0x30; /* xHCI */
2885 xhci->pci_dev.config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin 1 */
2886 xhci->pci_dev.config[PCI_CACHE_LINE_SIZE] = 0x10;
2887 xhci->pci_dev.config[0x60] = 0x30; /* release number */
2888
2889 usb_xhci_init(xhci, &dev->qdev);
2890
2891 xhci->irq = xhci->pci_dev.irq[0];
2892
2893 memory_region_init_io(&xhci->mem, &xhci_mem_ops, xhci,
2894 "xhci", LEN_REGS);
2895 pci_register_bar(&xhci->pci_dev, 0,
2896 PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64,
2897 &xhci->mem);
2898
2899 ret = pcie_cap_init(&xhci->pci_dev, 0xa0, PCI_EXP_TYPE_ENDPOINT, 0);
2900 assert(ret >= 0);
2901
2902 if (xhci->msi) {
2903 ret = msi_init(&xhci->pci_dev, 0x70, 1, true, false);
2904 assert(ret >= 0);
2905 }
2906
2907 return 0;
2908 }
2909
2910 static void xhci_write_config(PCIDevice *dev, uint32_t addr, uint32_t val,
2911 int len)
2912 {
2913 XHCIState *xhci = DO_UPCAST(XHCIState, pci_dev, dev);
2914
2915 pci_default_write_config(dev, addr, val, len);
2916 if (xhci->msi) {
2917 msi_write_config(dev, addr, val, len);
2918 }
2919 }
2920
2921 static const VMStateDescription vmstate_xhci = {
2922 .name = "xhci",
2923 .unmigratable = 1,
2924 };
2925
2926 static Property xhci_properties[] = {
2927 DEFINE_PROP_UINT32("msi", XHCIState, msi, 0),
2928 DEFINE_PROP_END_OF_LIST(),
2929 };
2930
2931 static void xhci_class_init(ObjectClass *klass, void *data)
2932 {
2933 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2934 DeviceClass *dc = DEVICE_CLASS(klass);
2935
2936 dc->vmsd = &vmstate_xhci;
2937 dc->props = xhci_properties;
2938 dc->reset = xhci_reset;
2939 k->init = usb_xhci_initfn;
2940 k->vendor_id = PCI_VENDOR_ID_NEC;
2941 k->device_id = PCI_DEVICE_ID_NEC_UPD720200;
2942 k->class_id = PCI_CLASS_SERIAL_USB;
2943 k->revision = 0x03;
2944 k->is_express = 1;
2945 k->config_write = xhci_write_config;
2946 }
2947
2948 static TypeInfo xhci_info = {
2949 .name = "nec-usb-xhci",
2950 .parent = TYPE_PCI_DEVICE,
2951 .instance_size = sizeof(XHCIState),
2952 .class_init = xhci_class_init,
2953 };
2954
2955 static void xhci_register_types(void)
2956 {
2957 type_register_static(&xhci_info);
2958 }
2959
2960 type_init(xhci_register_types)
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