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migration: do floating-point division
[qemu.git] / hw / usb / hcd-ohci.c
blob7d658180645f05e0a41b97cfe3a081a28c422dd5
1 /*
2 * QEMU USB OHCI Emulation
3 * Copyright (c) 2004 Gianni Tedesco
4 * Copyright (c) 2006 CodeSourcery
5 * Copyright (c) 2006 Openedhand Ltd.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 *
20 * TODO:
21 * o Isochronous transfers
22 * o Allocate bandwidth in frames properly
23 * o Disable timers when nothing needs to be done, or remove timer usage
24 * all together.
25 * o BIOS work to boot from USB storage
26 */
27
28 #include "hw/hw.h"
29 #include "qemu/timer.h"
30 #include "hw/usb.h"
31 #include "hw/pci/pci.h"
32 #include "hw/sysbus.h"
33 #include "hw/qdev-dma.h"
34 #include "trace.h"
35
36 /* This causes frames to occur 1000x slower */
37 //#define OHCI_TIME_WARP 1
38
39 /* Number of Downstream Ports on the root hub. */
40
41 #define OHCI_MAX_PORTS 15
42
43 static int64_t usb_frame_time;
44 static int64_t usb_bit_time;
45
46 typedef struct OHCIPort {
47 USBPort port;
48 uint32_t ctrl;
49 } OHCIPort;
50
51 typedef struct {
52 USBBus bus;
53 qemu_irq irq;
54 MemoryRegion mem;
55 AddressSpace *as;
56 int num_ports;
57 const char *name;
58
59 QEMUTimer *eof_timer;
60 int64_t sof_time;
61
62 /* OHCI state */
63 /* Control partition */
64 uint32_t ctl, status;
65 uint32_t intr_status;
66 uint32_t intr;
67
68 /* memory pointer partition */
69 uint32_t hcca;
70 uint32_t ctrl_head, ctrl_cur;
71 uint32_t bulk_head, bulk_cur;
72 uint32_t per_cur;
73 uint32_t done;
74 int32_t done_count;
75
76 /* Frame counter partition */
77 uint16_t fsmps;
78 uint8_t fit;
79 uint16_t fi;
80 uint8_t frt;
81 uint16_t frame_number;
82 uint16_t padding;
83 uint32_t pstart;
84 uint32_t lst;
85
86 /* Root Hub partition */
87 uint32_t rhdesc_a, rhdesc_b;
88 uint32_t rhstatus;
89 OHCIPort rhport[OHCI_MAX_PORTS];
90
91 /* PXA27x Non-OHCI events */
92 uint32_t hstatus;
93 uint32_t hmask;
94 uint32_t hreset;
95 uint32_t htest;
96
97 /* SM501 local memory offset */
98 dma_addr_t localmem_base;
99
100 /* Active packets. */
101 uint32_t old_ctl;
102 USBPacket usb_packet;
103 uint8_t usb_buf[8192];
104 uint32_t async_td;
105 bool async_complete;
106
107 } OHCIState;
108
109 /* Host Controller Communications Area */
110 struct ohci_hcca {
111 uint32_t intr[32];
112 uint16_t frame, pad;
113 uint32_t done;
114 };
115 #define HCCA_WRITEBACK_OFFSET offsetof(struct ohci_hcca, frame)
116 #define HCCA_WRITEBACK_SIZE 8 /* frame, pad, done */
117
118 #define ED_WBACK_OFFSET offsetof(struct ohci_ed, head)
119 #define ED_WBACK_SIZE 4
120
121 static void ohci_bus_stop(OHCIState *ohci);
122 static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev);
123
124 /* Bitfields for the first word of an Endpoint Desciptor. */
125 #define OHCI_ED_FA_SHIFT 0
126 #define OHCI_ED_FA_MASK (0x7f<<OHCI_ED_FA_SHIFT)
127 #define OHCI_ED_EN_SHIFT 7
128 #define OHCI_ED_EN_MASK (0xf<<OHCI_ED_EN_SHIFT)
129 #define OHCI_ED_D_SHIFT 11
130 #define OHCI_ED_D_MASK (3<<OHCI_ED_D_SHIFT)
131 #define OHCI_ED_S (1<<13)
132 #define OHCI_ED_K (1<<14)
133 #define OHCI_ED_F (1<<15)
134 #define OHCI_ED_MPS_SHIFT 16
135 #define OHCI_ED_MPS_MASK (0x7ff<<OHCI_ED_MPS_SHIFT)
136
137 /* Flags in the head field of an Endpoint Desciptor. */
138 #define OHCI_ED_H 1
139 #define OHCI_ED_C 2
140
141 /* Bitfields for the first word of a Transfer Desciptor. */
142 #define OHCI_TD_R (1<<18)
143 #define OHCI_TD_DP_SHIFT 19
144 #define OHCI_TD_DP_MASK (3<<OHCI_TD_DP_SHIFT)
145 #define OHCI_TD_DI_SHIFT 21
146 #define OHCI_TD_DI_MASK (7<<OHCI_TD_DI_SHIFT)
147 #define OHCI_TD_T0 (1<<24)
148 #define OHCI_TD_T1 (1<<25)
149 #define OHCI_TD_EC_SHIFT 26
150 #define OHCI_TD_EC_MASK (3<<OHCI_TD_EC_SHIFT)
151 #define OHCI_TD_CC_SHIFT 28
152 #define OHCI_TD_CC_MASK (0xf<<OHCI_TD_CC_SHIFT)
153
154 /* Bitfields for the first word of an Isochronous Transfer Desciptor. */
155 /* CC & DI - same as in the General Transfer Desciptor */
156 #define OHCI_TD_SF_SHIFT 0
157 #define OHCI_TD_SF_MASK (0xffff<<OHCI_TD_SF_SHIFT)
158 #define OHCI_TD_FC_SHIFT 24
159 #define OHCI_TD_FC_MASK (7<<OHCI_TD_FC_SHIFT)
160
161 /* Isochronous Transfer Desciptor - Offset / PacketStatusWord */
162 #define OHCI_TD_PSW_CC_SHIFT 12
163 #define OHCI_TD_PSW_CC_MASK (0xf<<OHCI_TD_PSW_CC_SHIFT)
164 #define OHCI_TD_PSW_SIZE_SHIFT 0
165 #define OHCI_TD_PSW_SIZE_MASK (0xfff<<OHCI_TD_PSW_SIZE_SHIFT)
166
167 #define OHCI_PAGE_MASK 0xfffff000
168 #define OHCI_OFFSET_MASK 0xfff
169
170 #define OHCI_DPTR_MASK 0xfffffff0
171
172 #define OHCI_BM(val, field) \
173 (((val) & OHCI_##field##_MASK) >> OHCI_##field##_SHIFT)
174
175 #define OHCI_SET_BM(val, field, newval) do { \
176 val &= ~OHCI_##field##_MASK; \
177 val |= ((newval) << OHCI_##field##_SHIFT) & OHCI_##field##_MASK; \
178 } while(0)
179
180 /* endpoint descriptor */
181 struct ohci_ed {
182 uint32_t flags;
183 uint32_t tail;
184 uint32_t head;
185 uint32_t next;
186 };
187
188 /* General transfer descriptor */
189 struct ohci_td {
190 uint32_t flags;
191 uint32_t cbp;
192 uint32_t next;
193 uint32_t be;
194 };
195
196 /* Isochronous transfer descriptor */
197 struct ohci_iso_td {
198 uint32_t flags;
199 uint32_t bp;
200 uint32_t next;
201 uint32_t be;
202 uint16_t offset[8];
203 };
204
205 #define USB_HZ 12000000
206
207 /* OHCI Local stuff */
208 #define OHCI_CTL_CBSR ((1<<0)|(1<<1))
209 #define OHCI_CTL_PLE (1<<2)
210 #define OHCI_CTL_IE (1<<3)
211 #define OHCI_CTL_CLE (1<<4)
212 #define OHCI_CTL_BLE (1<<5)
213 #define OHCI_CTL_HCFS ((1<<6)|(1<<7))
214 #define OHCI_USB_RESET 0x00
215 #define OHCI_USB_RESUME 0x40
216 #define OHCI_USB_OPERATIONAL 0x80
217 #define OHCI_USB_SUSPEND 0xc0
218 #define OHCI_CTL_IR (1<<8)
219 #define OHCI_CTL_RWC (1<<9)
220 #define OHCI_CTL_RWE (1<<10)
221
222 #define OHCI_STATUS_HCR (1<<0)
223 #define OHCI_STATUS_CLF (1<<1)
224 #define OHCI_STATUS_BLF (1<<2)
225 #define OHCI_STATUS_OCR (1<<3)
226 #define OHCI_STATUS_SOC ((1<<6)|(1<<7))
227
228 #define OHCI_INTR_SO (1U<<0) /* Scheduling overrun */
229 #define OHCI_INTR_WD (1U<<1) /* HcDoneHead writeback */
230 #define OHCI_INTR_SF (1U<<2) /* Start of frame */
231 #define OHCI_INTR_RD (1U<<3) /* Resume detect */
232 #define OHCI_INTR_UE (1U<<4) /* Unrecoverable error */
233 #define OHCI_INTR_FNO (1U<<5) /* Frame number overflow */
234 #define OHCI_INTR_RHSC (1U<<6) /* Root hub status change */
235 #define OHCI_INTR_OC (1U<<30) /* Ownership change */
236 #define OHCI_INTR_MIE (1U<<31) /* Master Interrupt Enable */
237
238 #define OHCI_HCCA_SIZE 0x100
239 #define OHCI_HCCA_MASK 0xffffff00
240
241 #define OHCI_EDPTR_MASK 0xfffffff0
242
243 #define OHCI_FMI_FI 0x00003fff
244 #define OHCI_FMI_FSMPS 0xffff0000
245 #define OHCI_FMI_FIT 0x80000000
246
247 #define OHCI_FR_RT (1U<<31)
248
249 #define OHCI_LS_THRESH 0x628
250
251 #define OHCI_RHA_RW_MASK 0x00000000 /* Mask of supported features. */
252 #define OHCI_RHA_PSM (1<<8)
253 #define OHCI_RHA_NPS (1<<9)
254 #define OHCI_RHA_DT (1<<10)
255 #define OHCI_RHA_OCPM (1<<11)
256 #define OHCI_RHA_NOCP (1<<12)
257 #define OHCI_RHA_POTPGT_MASK 0xff000000
258
259 #define OHCI_RHS_LPS (1U<<0)
260 #define OHCI_RHS_OCI (1U<<1)
261 #define OHCI_RHS_DRWE (1U<<15)
262 #define OHCI_RHS_LPSC (1U<<16)
263 #define OHCI_RHS_OCIC (1U<<17)
264 #define OHCI_RHS_CRWE (1U<<31)
265
266 #define OHCI_PORT_CCS (1<<0)
267 #define OHCI_PORT_PES (1<<1)
268 #define OHCI_PORT_PSS (1<<2)
269 #define OHCI_PORT_POCI (1<<3)
270 #define OHCI_PORT_PRS (1<<4)
271 #define OHCI_PORT_PPS (1<<8)
272 #define OHCI_PORT_LSDA (1<<9)
273 #define OHCI_PORT_CSC (1<<16)
274 #define OHCI_PORT_PESC (1<<17)
275 #define OHCI_PORT_PSSC (1<<18)
276 #define OHCI_PORT_OCIC (1<<19)
277 #define OHCI_PORT_PRSC (1<<20)
278 #define OHCI_PORT_WTC (OHCI_PORT_CSC|OHCI_PORT_PESC|OHCI_PORT_PSSC \
279 |OHCI_PORT_OCIC|OHCI_PORT_PRSC)
280
281 #define OHCI_TD_DIR_SETUP 0x0
282 #define OHCI_TD_DIR_OUT 0x1
283 #define OHCI_TD_DIR_IN 0x2
284 #define OHCI_TD_DIR_RESERVED 0x3
285
286 #define OHCI_CC_NOERROR 0x0
287 #define OHCI_CC_CRC 0x1
288 #define OHCI_CC_BITSTUFFING 0x2
289 #define OHCI_CC_DATATOGGLEMISMATCH 0x3
290 #define OHCI_CC_STALL 0x4
291 #define OHCI_CC_DEVICENOTRESPONDING 0x5
292 #define OHCI_CC_PIDCHECKFAILURE 0x6
293 #define OHCI_CC_UNDEXPETEDPID 0x7
294 #define OHCI_CC_DATAOVERRUN 0x8
295 #define OHCI_CC_DATAUNDERRUN 0x9
296 #define OHCI_CC_BUFFEROVERRUN 0xc
297 #define OHCI_CC_BUFFERUNDERRUN 0xd
298
299 #define OHCI_HRESET_FSBIR (1 << 0)
300
301 static void ohci_die(OHCIState *ohci);
302
303 /* Update IRQ levels */
304 static inline void ohci_intr_update(OHCIState *ohci)
305 {
306 int level = 0;
307
308 if ((ohci->intr & OHCI_INTR_MIE) &&
309 (ohci->intr_status & ohci->intr))
310 level = 1;
311
312 qemu_set_irq(ohci->irq, level);
313 }
314
315 /* Set an interrupt */
316 static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr)
317 {
318 ohci->intr_status |= intr;
319 ohci_intr_update(ohci);
320 }
321
322 /* Attach or detach a device on a root hub port. */
323 static void ohci_attach(USBPort *port1)
324 {
325 OHCIState *s = port1->opaque;
326 OHCIPort *port = &s->rhport[port1->index];
327 uint32_t old_state = port->ctrl;
328
329 /* set connect status */
330 port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC;
331
332 /* update speed */
333 if (port->port.dev->speed == USB_SPEED_LOW) {
334 port->ctrl |= OHCI_PORT_LSDA;
335 } else {
336 port->ctrl &= ~OHCI_PORT_LSDA;
337 }
338
339 /* notify of remote-wakeup */
340 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
341 ohci_set_interrupt(s, OHCI_INTR_RD);
342 }
343
344 trace_usb_ohci_port_attach(port1->index);
345
346 if (old_state != port->ctrl) {
347 ohci_set_interrupt(s, OHCI_INTR_RHSC);
348 }
349 }
350
351 static void ohci_detach(USBPort *port1)
352 {
353 OHCIState *s = port1->opaque;
354 OHCIPort *port = &s->rhport[port1->index];
355 uint32_t old_state = port->ctrl;
356
357 ohci_async_cancel_device(s, port1->dev);
358
359 /* set connect status */
360 if (port->ctrl & OHCI_PORT_CCS) {
361 port->ctrl &= ~OHCI_PORT_CCS;
362 port->ctrl |= OHCI_PORT_CSC;
363 }
364 /* disable port */
365 if (port->ctrl & OHCI_PORT_PES) {
366 port->ctrl &= ~OHCI_PORT_PES;
367 port->ctrl |= OHCI_PORT_PESC;
368 }
369 trace_usb_ohci_port_detach(port1->index);
370
371 if (old_state != port->ctrl) {
372 ohci_set_interrupt(s, OHCI_INTR_RHSC);
373 }
374 }
375
376 static void ohci_wakeup(USBPort *port1)
377 {
378 OHCIState *s = port1->opaque;
379 OHCIPort *port = &s->rhport[port1->index];
380 uint32_t intr = 0;
381 if (port->ctrl & OHCI_PORT_PSS) {
382 trace_usb_ohci_port_wakeup(port1->index);
383 port->ctrl |= OHCI_PORT_PSSC;
384 port->ctrl &= ~OHCI_PORT_PSS;
385 intr = OHCI_INTR_RHSC;
386 }
387 /* Note that the controller can be suspended even if this port is not */
388 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
389 trace_usb_ohci_remote_wakeup(s->name);
390 /* This is the one state transition the controller can do by itself */
391 s->ctl &= ~OHCI_CTL_HCFS;
392 s->ctl |= OHCI_USB_RESUME;
393 /* In suspend mode only ResumeDetected is possible, not RHSC:
394 * see the OHCI spec 5.1.2.3.
395 */
396 intr = OHCI_INTR_RD;
397 }
398 ohci_set_interrupt(s, intr);
399 }
400
401 static void ohci_child_detach(USBPort *port1, USBDevice *child)
402 {
403 OHCIState *s = port1->opaque;
404
405 ohci_async_cancel_device(s, child);
406 }
407
408 static USBDevice *ohci_find_device(OHCIState *ohci, uint8_t addr)
409 {
410 USBDevice *dev;
411 int i;
412
413 for (i = 0; i < ohci->num_ports; i++) {
414 if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0) {
415 continue;
416 }
417 dev = usb_find_device(&ohci->rhport[i].port, addr);
418 if (dev != NULL) {
419 return dev;
420 }
421 }
422 return NULL;
423 }
424
425 static void ohci_stop_endpoints(OHCIState *ohci)
426 {
427 USBDevice *dev;
428 int i, j;
429
430 for (i = 0; i < ohci->num_ports; i++) {
431 dev = ohci->rhport[i].port.dev;
432 if (dev && dev->attached) {
433 usb_device_ep_stopped(dev, &dev->ep_ctl);
434 for (j = 0; j < USB_MAX_ENDPOINTS; j++) {
435 usb_device_ep_stopped(dev, &dev->ep_in[j]);
436 usb_device_ep_stopped(dev, &dev->ep_out[j]);
437 }
438 }
439 }
440 }
441
442 /* Reset the controller */
443 static void ohci_reset(void *opaque)
444 {
445 OHCIState *ohci = opaque;
446 OHCIPort *port;
447 int i;
448
449 ohci_bus_stop(ohci);
450 ohci->ctl = 0;
451 ohci->old_ctl = 0;
452 ohci->status = 0;
453 ohci->intr_status = 0;
454 ohci->intr = OHCI_INTR_MIE;
455
456 ohci->hcca = 0;
457 ohci->ctrl_head = ohci->ctrl_cur = 0;
458 ohci->bulk_head = ohci->bulk_cur = 0;
459 ohci->per_cur = 0;
460 ohci->done = 0;
461 ohci->done_count = 7;
462
463 /* FSMPS is marked TBD in OCHI 1.0, what gives ffs?
464 * I took the value linux sets ...
465 */
466 ohci->fsmps = 0x2778;
467 ohci->fi = 0x2edf;
468 ohci->fit = 0;
469 ohci->frt = 0;
470 ohci->frame_number = 0;
471 ohci->pstart = 0;
472 ohci->lst = OHCI_LS_THRESH;
473
474 ohci->rhdesc_a = OHCI_RHA_NPS | ohci->num_ports;
475 ohci->rhdesc_b = 0x0; /* Impl. specific */
476 ohci->rhstatus = 0;
477
478 for (i = 0; i < ohci->num_ports; i++)
479 {
480 port = &ohci->rhport[i];
481 port->ctrl = 0;
482 if (port->port.dev && port->port.dev->attached) {
483 usb_port_reset(&port->port);
484 }
485 }
486 if (ohci->async_td) {
487 usb_cancel_packet(&ohci->usb_packet);
488 ohci->async_td = 0;
489 }
490 ohci_stop_endpoints(ohci);
491 trace_usb_ohci_reset(ohci->name);
492 }
493
494 /* Get an array of dwords from main memory */
495 static inline int get_dwords(OHCIState *ohci,
496 dma_addr_t addr, uint32_t *buf, int num)
497 {
498 int i;
499
500 addr += ohci->localmem_base;
501
502 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
503 if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
504 return -1;
505 }
506 *buf = le32_to_cpu(*buf);
507 }
508
509 return 0;
510 }
511
512 /* Put an array of dwords in to main memory */
513 static inline int put_dwords(OHCIState *ohci,
514 dma_addr_t addr, uint32_t *buf, int num)
515 {
516 int i;
517
518 addr += ohci->localmem_base;
519
520 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
521 uint32_t tmp = cpu_to_le32(*buf);
522 if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
523 return -1;
524 }
525 }
526
527 return 0;
528 }
529
530 /* Get an array of words from main memory */
531 static inline int get_words(OHCIState *ohci,
532 dma_addr_t addr, uint16_t *buf, int num)
533 {
534 int i;
535
536 addr += ohci->localmem_base;
537
538 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
539 if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
540 return -1;
541 }
542 *buf = le16_to_cpu(*buf);
543 }
544
545 return 0;
546 }
547
548 /* Put an array of words in to main memory */
549 static inline int put_words(OHCIState *ohci,
550 dma_addr_t addr, uint16_t *buf, int num)
551 {
552 int i;
553
554 addr += ohci->localmem_base;
555
556 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
557 uint16_t tmp = cpu_to_le16(*buf);
558 if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
559 return -1;
560 }
561 }
562
563 return 0;
564 }
565
566 static inline int ohci_read_ed(OHCIState *ohci,
567 dma_addr_t addr, struct ohci_ed *ed)
568 {
569 return get_dwords(ohci, addr, (uint32_t *)ed, sizeof(*ed) >> 2);
570 }
571
572 static inline int ohci_read_td(OHCIState *ohci,
573 dma_addr_t addr, struct ohci_td *td)
574 {
575 return get_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
576 }
577
578 static inline int ohci_read_iso_td(OHCIState *ohci,
579 dma_addr_t addr, struct ohci_iso_td *td)
580 {
581 return get_dwords(ohci, addr, (uint32_t *)td, 4) ||
582 get_words(ohci, addr + 16, td->offset, 8);
583 }
584
585 static inline int ohci_read_hcca(OHCIState *ohci,
586 dma_addr_t addr, struct ohci_hcca *hcca)
587 {
588 return dma_memory_read(ohci->as, addr + ohci->localmem_base,
589 hcca, sizeof(*hcca));
590 }
591
592 static inline int ohci_put_ed(OHCIState *ohci,
593 dma_addr_t addr, struct ohci_ed *ed)
594 {
595 /* ed->tail is under control of the HCD.
596 * Since just ed->head is changed by HC, just write back this
597 */
598
599 return put_dwords(ohci, addr + ED_WBACK_OFFSET,
600 (uint32_t *)((char *)ed + ED_WBACK_OFFSET),
601 ED_WBACK_SIZE >> 2);
602 }
603
604 static inline int ohci_put_td(OHCIState *ohci,
605 dma_addr_t addr, struct ohci_td *td)
606 {
607 return put_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
608 }
609
610 static inline int ohci_put_iso_td(OHCIState *ohci,
611 dma_addr_t addr, struct ohci_iso_td *td)
612 {
613 return put_dwords(ohci, addr, (uint32_t *)td, 4) ||
614 put_words(ohci, addr + 16, td->offset, 8);
615 }
616
617 static inline int ohci_put_hcca(OHCIState *ohci,
618 dma_addr_t addr, struct ohci_hcca *hcca)
619 {
620 return dma_memory_write(ohci->as,
621 addr + ohci->localmem_base + HCCA_WRITEBACK_OFFSET,
622 (char *)hcca + HCCA_WRITEBACK_OFFSET,
623 HCCA_WRITEBACK_SIZE);
624 }
625
626 /* Read/Write the contents of a TD from/to main memory. */
627 static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td,
628 uint8_t *buf, int len, DMADirection dir)
629 {
630 dma_addr_t ptr, n;
631
632 ptr = td->cbp;
633 n = 0x1000 - (ptr & 0xfff);
634 if (n > len)
635 n = len;
636
637 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
638 return -1;
639 }
640 if (n == len) {
641 return 0;
642 }
643 ptr = td->be & ~0xfffu;
644 buf += n;
645 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
646 len - n, dir)) {
647 return -1;
648 }
649 return 0;
650 }
651
652 /* Read/Write the contents of an ISO TD from/to main memory. */
653 static int ohci_copy_iso_td(OHCIState *ohci,
654 uint32_t start_addr, uint32_t end_addr,
655 uint8_t *buf, int len, DMADirection dir)
656 {
657 dma_addr_t ptr, n;
658
659 ptr = start_addr;
660 n = 0x1000 - (ptr & 0xfff);
661 if (n > len)
662 n = len;
663
664 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
665 return -1;
666 }
667 if (n == len) {
668 return 0;
669 }
670 ptr = end_addr & ~0xfffu;
671 buf += n;
672 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
673 len - n, dir)) {
674 return -1;
675 }
676 return 0;
677 }
678
679 static void ohci_process_lists(OHCIState *ohci, int completion);
680
681 static void ohci_async_complete_packet(USBPort *port, USBPacket *packet)
682 {
683 OHCIState *ohci = container_of(packet, OHCIState, usb_packet);
684
685 trace_usb_ohci_async_complete();
686 ohci->async_complete = true;
687 ohci_process_lists(ohci, 1);
688 }
689
690 #define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b)))
691
692 static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
693 int completion)
694 {
695 int dir;
696 size_t len = 0;
697 const char *str = NULL;
698 int pid;
699 int ret;
700 int i;
701 USBDevice *dev;
702 USBEndpoint *ep;
703 struct ohci_iso_td iso_td;
704 uint32_t addr;
705 uint16_t starting_frame;
706 int16_t relative_frame_number;
707 int frame_count;
708 uint32_t start_offset, next_offset, end_offset = 0;
709 uint32_t start_addr, end_addr;
710
711 addr = ed->head & OHCI_DPTR_MASK;
712
713 if (ohci_read_iso_td(ohci, addr, &iso_td)) {
714 trace_usb_ohci_iso_td_read_failed(addr);
715 ohci_die(ohci);
716 return 0;
717 }
718
719 starting_frame = OHCI_BM(iso_td.flags, TD_SF);
720 frame_count = OHCI_BM(iso_td.flags, TD_FC);
721 relative_frame_number = USUB(ohci->frame_number, starting_frame);
722
723 trace_usb_ohci_iso_td_head(
724 ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK,
725 iso_td.flags, iso_td.bp, iso_td.next, iso_td.be,
726 ohci->frame_number, starting_frame,
727 frame_count, relative_frame_number);
728 trace_usb_ohci_iso_td_head_offset(
729 iso_td.offset[0], iso_td.offset[1],
730 iso_td.offset[2], iso_td.offset[3],
731 iso_td.offset[4], iso_td.offset[5],
732 iso_td.offset[6], iso_td.offset[7]);
733
734 if (relative_frame_number < 0) {
735 trace_usb_ohci_iso_td_relative_frame_number_neg(relative_frame_number);
736 return 1;
737 } else if (relative_frame_number > frame_count) {
738 /* ISO TD expired - retire the TD to the Done Queue and continue with
739 the next ISO TD of the same ED */
740 trace_usb_ohci_iso_td_relative_frame_number_big(relative_frame_number,
741 frame_count);
742 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
743 ed->head &= ~OHCI_DPTR_MASK;
744 ed->head |= (iso_td.next & OHCI_DPTR_MASK);
745 iso_td.next = ohci->done;
746 ohci->done = addr;
747 i = OHCI_BM(iso_td.flags, TD_DI);
748 if (i < ohci->done_count)
749 ohci->done_count = i;
750 if (ohci_put_iso_td(ohci, addr, &iso_td)) {
751 ohci_die(ohci);
752 return 1;
753 }
754 return 0;
755 }
756
757 dir = OHCI_BM(ed->flags, ED_D);
758 switch (dir) {
759 case OHCI_TD_DIR_IN:
760 str = "in";
761 pid = USB_TOKEN_IN;
762 break;
763 case OHCI_TD_DIR_OUT:
764 str = "out";
765 pid = USB_TOKEN_OUT;
766 break;
767 case OHCI_TD_DIR_SETUP:
768 str = "setup";
769 pid = USB_TOKEN_SETUP;
770 break;
771 default:
772 trace_usb_ohci_iso_td_bad_direction(dir);
773 return 1;
774 }
775
776 if (!iso_td.bp || !iso_td.be) {
777 trace_usb_ohci_iso_td_bad_bp_be(iso_td.bp, iso_td.be);
778 return 1;
779 }
780
781 start_offset = iso_td.offset[relative_frame_number];
782 next_offset = iso_td.offset[relative_frame_number + 1];
783
784 if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) ||
785 ((relative_frame_number < frame_count) &&
786 !(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) {
787 trace_usb_ohci_iso_td_bad_cc_not_accessed(start_offset, next_offset);
788 return 1;
789 }
790
791 if ((relative_frame_number < frame_count) && (start_offset > next_offset)) {
792 trace_usb_ohci_iso_td_bad_cc_overrun(start_offset, next_offset);
793 return 1;
794 }
795
796 if ((start_offset & 0x1000) == 0) {
797 start_addr = (iso_td.bp & OHCI_PAGE_MASK) |
798 (start_offset & OHCI_OFFSET_MASK);
799 } else {
800 start_addr = (iso_td.be & OHCI_PAGE_MASK) |
801 (start_offset & OHCI_OFFSET_MASK);
802 }
803
804 if (relative_frame_number < frame_count) {
805 end_offset = next_offset - 1;
806 if ((end_offset & 0x1000) == 0) {
807 end_addr = (iso_td.bp & OHCI_PAGE_MASK) |
808 (end_offset & OHCI_OFFSET_MASK);
809 } else {
810 end_addr = (iso_td.be & OHCI_PAGE_MASK) |
811 (end_offset & OHCI_OFFSET_MASK);
812 }
813 } else {
814 /* Last packet in the ISO TD */
815 end_addr = iso_td.be;
816 }
817
818 if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) {
819 len = (end_addr & OHCI_OFFSET_MASK) + 0x1001
820 - (start_addr & OHCI_OFFSET_MASK);
821 } else {
822 len = end_addr - start_addr + 1;
823 }
824
825 if (len && dir != OHCI_TD_DIR_IN) {
826 if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, len,
827 DMA_DIRECTION_TO_DEVICE)) {
828 ohci_die(ohci);
829 return 1;
830 }
831 }
832
833 if (!completion) {
834 bool int_req = relative_frame_number == frame_count &&
835 OHCI_BM(iso_td.flags, TD_DI) == 0;
836 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
837 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
838 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, false, int_req);
839 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, len);
840 usb_handle_packet(dev, &ohci->usb_packet);
841 if (ohci->usb_packet.status == USB_RET_ASYNC) {
842 usb_device_flush_ep_queue(dev, ep);
843 return 1;
844 }
845 }
846 if (ohci->usb_packet.status == USB_RET_SUCCESS) {
847 ret = ohci->usb_packet.actual_length;
848 } else {
849 ret = ohci->usb_packet.status;
850 }
851
852 trace_usb_ohci_iso_td_so(start_offset, end_offset, start_addr, end_addr,
853 str, len, ret);
854
855 /* Writeback */
856 if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) {
857 /* IN transfer succeeded */
858 if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, ret,
859 DMA_DIRECTION_FROM_DEVICE)) {
860 ohci_die(ohci);
861 return 1;
862 }
863 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
864 OHCI_CC_NOERROR);
865 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret);
866 } else if (dir == OHCI_TD_DIR_OUT && ret == len) {
867 /* OUT transfer succeeded */
868 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
869 OHCI_CC_NOERROR);
870 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0);
871 } else {
872 if (ret > (ssize_t) len) {
873 trace_usb_ohci_iso_td_data_overrun(ret, len);
874 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
875 OHCI_CC_DATAOVERRUN);
876 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
877 len);
878 } else if (ret >= 0) {
879 trace_usb_ohci_iso_td_data_underrun(ret);
880 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
881 OHCI_CC_DATAUNDERRUN);
882 } else {
883 switch (ret) {
884 case USB_RET_IOERROR:
885 case USB_RET_NODEV:
886 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
887 OHCI_CC_DEVICENOTRESPONDING);
888 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
889 0);
890 break;
891 case USB_RET_NAK:
892 case USB_RET_STALL:
893 trace_usb_ohci_iso_td_nak(ret);
894 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
895 OHCI_CC_STALL);
896 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
897 0);
898 break;
899 default:
900 trace_usb_ohci_iso_td_bad_response(ret);
901 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
902 OHCI_CC_UNDEXPETEDPID);
903 break;
904 }
905 }
906 }
907
908 if (relative_frame_number == frame_count) {
909 /* Last data packet of ISO TD - retire the TD to the Done Queue */
910 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR);
911 ed->head &= ~OHCI_DPTR_MASK;
912 ed->head |= (iso_td.next & OHCI_DPTR_MASK);
913 iso_td.next = ohci->done;
914 ohci->done = addr;
915 i = OHCI_BM(iso_td.flags, TD_DI);
916 if (i < ohci->done_count)
917 ohci->done_count = i;
918 }
919 if (ohci_put_iso_td(ohci, addr, &iso_td)) {
920 ohci_die(ohci);
921 }
922 return 1;
923 }
924
925 #ifdef trace_event_get_state
926 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
927 {
928 bool print16 = !!trace_event_get_state(TRACE_USB_OHCI_TD_PKT_SHORT);
929 bool printall = !!trace_event_get_state(TRACE_USB_OHCI_TD_PKT_FULL);
930 const int width = 16;
931 int i;
932 char tmp[3 * width + 1];
933 char *p = tmp;
934
935 if (!printall && !print16) {
936 return;
937 }
938
939 for (i = 0; ; i++) {
940 if (i && (!(i % width) || (i == len))) {
941 if (!printall) {
942 trace_usb_ohci_td_pkt_short(msg, tmp);
943 break;
944 }
945 trace_usb_ohci_td_pkt_full(msg, tmp);
946 p = tmp;
947 *p = 0;
948 }
949 if (i == len) {
950 break;
951 }
952
953 p += sprintf(p, " %.2x", buf[i]);
954 }
955 }
956 #else
957 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
958 {
959 }
960 #endif
961
962 /* Service a transport descriptor.
963 Returns nonzero to terminate processing of this endpoint. */
964
965 static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
966 {
967 int dir;
968 size_t len = 0, pktlen = 0;
969 const char *str = NULL;
970 int pid;
971 int ret;
972 int i;
973 USBDevice *dev;
974 USBEndpoint *ep;
975 struct ohci_td td;
976 uint32_t addr;
977 int flag_r;
978 int completion;
979
980 addr = ed->head & OHCI_DPTR_MASK;
981 /* See if this TD has already been submitted to the device. */
982 completion = (addr == ohci->async_td);
983 if (completion && !ohci->async_complete) {
984 trace_usb_ohci_td_skip_async();
985 return 1;
986 }
987 if (ohci_read_td(ohci, addr, &td)) {
988 trace_usb_ohci_td_read_error(addr);
989 ohci_die(ohci);
990 return 0;
991 }
992
993 dir = OHCI_BM(ed->flags, ED_D);
994 switch (dir) {
995 case OHCI_TD_DIR_OUT:
996 case OHCI_TD_DIR_IN:
997 /* Same value. */
998 break;
999 default:
1000 dir = OHCI_BM(td.flags, TD_DP);
1001 break;
1002 }
1003
1004 switch (dir) {
1005 case OHCI_TD_DIR_IN:
1006 str = "in";
1007 pid = USB_TOKEN_IN;
1008 break;
1009 case OHCI_TD_DIR_OUT:
1010 str = "out";
1011 pid = USB_TOKEN_OUT;
1012 break;
1013 case OHCI_TD_DIR_SETUP:
1014 str = "setup";
1015 pid = USB_TOKEN_SETUP;
1016 break;
1017 default:
1018 trace_usb_ohci_td_bad_direction(dir);
1019 return 1;
1020 }
1021 if (td.cbp && td.be) {
1022 if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) {
1023 len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff);
1024 } else {
1025 len = (td.be - td.cbp) + 1;
1026 }
1027
1028 pktlen = len;
1029 if (len && dir != OHCI_TD_DIR_IN) {
1030 /* The endpoint may not allow us to transfer it all now */
1031 pktlen = (ed->flags & OHCI_ED_MPS_MASK) >> OHCI_ED_MPS_SHIFT;
1032 if (pktlen > len) {
1033 pktlen = len;
1034 }
1035 if (!completion) {
1036 if (ohci_copy_td(ohci, &td, ohci->usb_buf, pktlen,
1037 DMA_DIRECTION_TO_DEVICE)) {
1038 ohci_die(ohci);
1039 }
1040 }
1041 }
1042 }
1043
1044 flag_r = (td.flags & OHCI_TD_R) != 0;
1045 trace_usb_ohci_td_pkt_hdr(addr, (int64_t)pktlen, (int64_t)len, str,
1046 flag_r, td.cbp, td.be);
1047 ohci_td_pkt("OUT", ohci->usb_buf, pktlen);
1048
1049 if (completion) {
1050 ohci->async_td = 0;
1051 ohci->async_complete = false;
1052 } else {
1053 if (ohci->async_td) {
1054 /* ??? The hardware should allow one active packet per
1055 endpoint. We only allow one active packet per controller.
1056 This should be sufficient as long as devices respond in a
1057 timely manner.
1058 */
1059 trace_usb_ohci_td_too_many_pending();
1060 return 1;
1061 }
1062 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
1063 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
1064 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r,
1065 OHCI_BM(td.flags, TD_DI) == 0);
1066 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, pktlen);
1067 usb_handle_packet(dev, &ohci->usb_packet);
1068 trace_usb_ohci_td_packet_status(ohci->usb_packet.status);
1069
1070 if (ohci->usb_packet.status == USB_RET_ASYNC) {
1071 usb_device_flush_ep_queue(dev, ep);
1072 ohci->async_td = addr;
1073 return 1;
1074 }
1075 }
1076 if (ohci->usb_packet.status == USB_RET_SUCCESS) {
1077 ret = ohci->usb_packet.actual_length;
1078 } else {
1079 ret = ohci->usb_packet.status;
1080 }
1081
1082 if (ret >= 0) {
1083 if (dir == OHCI_TD_DIR_IN) {
1084 if (ohci_copy_td(ohci, &td, ohci->usb_buf, ret,
1085 DMA_DIRECTION_FROM_DEVICE)) {
1086 ohci_die(ohci);
1087 }
1088 ohci_td_pkt("IN", ohci->usb_buf, pktlen);
1089 } else {
1090 ret = pktlen;
1091 }
1092 }
1093
1094 /* Writeback */
1095 if (ret == pktlen || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) {
1096 /* Transmission succeeded. */
1097 if (ret == len) {
1098 td.cbp = 0;
1099 } else {
1100 if ((td.cbp & 0xfff) + ret > 0xfff) {
1101 td.cbp = (td.be & ~0xfff) + ((td.cbp + ret) & 0xfff);
1102 } else {
1103 td.cbp += ret;
1104 }
1105 }
1106 td.flags |= OHCI_TD_T1;
1107 td.flags ^= OHCI_TD_T0;
1108 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_NOERROR);
1109 OHCI_SET_BM(td.flags, TD_EC, 0);
1110
1111 if ((dir != OHCI_TD_DIR_IN) && (ret != len)) {
1112 /* Partial packet transfer: TD not ready to retire yet */
1113 goto exit_no_retire;
1114 }
1115
1116 /* Setting ED_C is part of the TD retirement process */
1117 ed->head &= ~OHCI_ED_C;
1118 if (td.flags & OHCI_TD_T0)
1119 ed->head |= OHCI_ED_C;
1120 } else {
1121 if (ret >= 0) {
1122 trace_usb_ohci_td_underrun();
1123 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN);
1124 } else {
1125 switch (ret) {
1126 case USB_RET_IOERROR:
1127 case USB_RET_NODEV:
1128 trace_usb_ohci_td_dev_error();
1129 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING);
1130 break;
1131 case USB_RET_NAK:
1132 trace_usb_ohci_td_nak();
1133 return 1;
1134 case USB_RET_STALL:
1135 trace_usb_ohci_td_stall();
1136 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_STALL);
1137 break;
1138 case USB_RET_BABBLE:
1139 trace_usb_ohci_td_babble();
1140 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
1141 break;
1142 default:
1143 trace_usb_ohci_td_bad_device_response(ret);
1144 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_UNDEXPETEDPID);
1145 OHCI_SET_BM(td.flags, TD_EC, 3);
1146 break;
1147 }
1148 }
1149 ed->head |= OHCI_ED_H;
1150 }
1151
1152 /* Retire this TD */
1153 ed->head &= ~OHCI_DPTR_MASK;
1154 ed->head |= td.next & OHCI_DPTR_MASK;
1155 td.next = ohci->done;
1156 ohci->done = addr;
1157 i = OHCI_BM(td.flags, TD_DI);
1158 if (i < ohci->done_count)
1159 ohci->done_count = i;
1160 exit_no_retire:
1161 if (ohci_put_td(ohci, addr, &td)) {
1162 ohci_die(ohci);
1163 return 1;
1164 }
1165 return OHCI_BM(td.flags, TD_CC) != OHCI_CC_NOERROR;
1166 }
1167
1168 /* Service an endpoint list. Returns nonzero if active TD were found. */
1169 static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion)
1170 {
1171 struct ohci_ed ed;
1172 uint32_t next_ed;
1173 uint32_t cur;
1174 int active;
1175
1176 active = 0;
1177
1178 if (head == 0)
1179 return 0;
1180
1181 for (cur = head; cur; cur = next_ed) {
1182 if (ohci_read_ed(ohci, cur, &ed)) {
1183 trace_usb_ohci_ed_read_error(cur);
1184 ohci_die(ohci);
1185 return 0;
1186 }
1187
1188 next_ed = ed.next & OHCI_DPTR_MASK;
1189
1190 if ((ed.head & OHCI_ED_H) || (ed.flags & OHCI_ED_K)) {
1191 uint32_t addr;
1192 /* Cancel pending packets for ED that have been paused. */
1193 addr = ed.head & OHCI_DPTR_MASK;
1194 if (ohci->async_td && addr == ohci->async_td) {
1195 usb_cancel_packet(&ohci->usb_packet);
1196 ohci->async_td = 0;
1197 usb_device_ep_stopped(ohci->usb_packet.ep->dev,
1198 ohci->usb_packet.ep);
1199 }
1200 continue;
1201 }
1202
1203 while ((ed.head & OHCI_DPTR_MASK) != ed.tail) {
1204 trace_usb_ohci_ed_pkt(cur, (ed.head & OHCI_ED_H) != 0,
1205 (ed.head & OHCI_ED_C) != 0, ed.head & OHCI_DPTR_MASK,
1206 ed.tail & OHCI_DPTR_MASK, ed.next & OHCI_DPTR_MASK);
1207 trace_usb_ohci_ed_pkt_flags(
1208 OHCI_BM(ed.flags, ED_FA), OHCI_BM(ed.flags, ED_EN),
1209 OHCI_BM(ed.flags, ED_D), (ed.flags & OHCI_ED_S)!= 0,
1210 (ed.flags & OHCI_ED_K) != 0, (ed.flags & OHCI_ED_F) != 0,
1211 OHCI_BM(ed.flags, ED_MPS));
1212
1213 active = 1;
1214
1215 if ((ed.flags & OHCI_ED_F) == 0) {
1216 if (ohci_service_td(ohci, &ed))
1217 break;
1218 } else {
1219 /* Handle isochronous endpoints */
1220 if (ohci_service_iso_td(ohci, &ed, completion))
1221 break;
1222 }
1223 }
1224
1225 if (ohci_put_ed(ohci, cur, &ed)) {
1226 ohci_die(ohci);
1227 return 0;
1228 }
1229 }
1230
1231 return active;
1232 }
1233
1234 /* Generate a SOF event, and set a timer for EOF */
1235 static void ohci_sof(OHCIState *ohci)
1236 {
1237 ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1238 timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time);
1239 ohci_set_interrupt(ohci, OHCI_INTR_SF);
1240 }
1241
1242 /* Process Control and Bulk lists. */
1243 static void ohci_process_lists(OHCIState *ohci, int completion)
1244 {
1245 if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) {
1246 if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head) {
1247 trace_usb_ohci_process_lists(ohci->ctrl_head, ohci->ctrl_cur);
1248 }
1249 if (!ohci_service_ed_list(ohci, ohci->ctrl_head, completion)) {
1250 ohci->ctrl_cur = 0;
1251 ohci->status &= ~OHCI_STATUS_CLF;
1252 }
1253 }
1254
1255 if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) {
1256 if (!ohci_service_ed_list(ohci, ohci->bulk_head, completion)) {
1257 ohci->bulk_cur = 0;
1258 ohci->status &= ~OHCI_STATUS_BLF;
1259 }
1260 }
1261 }
1262
1263 /* Do frame processing on frame boundary */
1264 static void ohci_frame_boundary(void *opaque)
1265 {
1266 OHCIState *ohci = opaque;
1267 struct ohci_hcca hcca;
1268
1269 if (ohci_read_hcca(ohci, ohci->hcca, &hcca)) {
1270 trace_usb_ohci_hcca_read_error(ohci->hcca);
1271 ohci_die(ohci);
1272 return;
1273 }
1274
1275 /* Process all the lists at the end of the frame */
1276 if (ohci->ctl & OHCI_CTL_PLE) {
1277 int n;
1278
1279 n = ohci->frame_number & 0x1f;
1280 ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n]), 0);
1281 }
1282
1283 /* Cancel all pending packets if either of the lists has been disabled. */
1284 if (ohci->old_ctl & (~ohci->ctl) & (OHCI_CTL_BLE | OHCI_CTL_CLE)) {
1285 if (ohci->async_td) {
1286 usb_cancel_packet(&ohci->usb_packet);
1287 ohci->async_td = 0;
1288 }
1289 ohci_stop_endpoints(ohci);
1290 }
1291 ohci->old_ctl = ohci->ctl;
1292 ohci_process_lists(ohci, 0);
1293
1294 /* Stop if UnrecoverableError happened or ohci_sof will crash */
1295 if (ohci->intr_status & OHCI_INTR_UE) {
1296 return;
1297 }
1298
1299 /* Frame boundary, so do EOF stuf here */
1300 ohci->frt = ohci->fit;
1301
1302 /* Increment frame number and take care of endianness. */
1303 ohci->frame_number = (ohci->frame_number + 1) & 0xffff;
1304 hcca.frame = cpu_to_le16(ohci->frame_number);
1305
1306 if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) {
1307 if (!ohci->done)
1308 abort();
1309 if (ohci->intr & ohci->intr_status)
1310 ohci->done |= 1;
1311 hcca.done = cpu_to_le32(ohci->done);
1312 ohci->done = 0;
1313 ohci->done_count = 7;
1314 ohci_set_interrupt(ohci, OHCI_INTR_WD);
1315 }
1316
1317 if (ohci->done_count != 7 && ohci->done_count != 0)
1318 ohci->done_count--;
1319
1320 /* Do SOF stuff here */
1321 ohci_sof(ohci);
1322
1323 /* Writeback HCCA */
1324 if (ohci_put_hcca(ohci, ohci->hcca, &hcca)) {
1325 ohci_die(ohci);
1326 }
1327 }
1328
1329 /* Start sending SOF tokens across the USB bus, lists are processed in
1330 * next frame
1331 */
1332 static int ohci_bus_start(OHCIState *ohci)
1333 {
1334 ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
1335 ohci_frame_boundary,
1336 ohci);
1337
1338 if (ohci->eof_timer == NULL) {
1339 trace_usb_ohci_bus_eof_timer_failed(ohci->name);
1340 ohci_die(ohci);
1341 return 0;
1342 }
1343
1344 trace_usb_ohci_start(ohci->name);
1345
1346 ohci_sof(ohci);
1347
1348 return 1;
1349 }
1350
1351 /* Stop sending SOF tokens on the bus */
1352 static void ohci_bus_stop(OHCIState *ohci)
1353 {
1354 trace_usb_ohci_stop(ohci->name);
1355 if (ohci->eof_timer) {
1356 timer_del(ohci->eof_timer);
1357 timer_free(ohci->eof_timer);
1358 }
1359 ohci->eof_timer = NULL;
1360 }
1361
1362 /* Sets a flag in a port status register but only set it if the port is
1363 * connected, if not set ConnectStatusChange flag. If flag is enabled
1364 * return 1.
1365 */
1366 static int ohci_port_set_if_connected(OHCIState *ohci, int i, uint32_t val)
1367 {
1368 int ret = 1;
1369
1370 /* writing a 0 has no effect */
1371 if (val == 0)
1372 return 0;
1373
1374 /* If CurrentConnectStatus is cleared we set
1375 * ConnectStatusChange
1376 */
1377 if (!(ohci->rhport[i].ctrl & OHCI_PORT_CCS)) {
1378 ohci->rhport[i].ctrl |= OHCI_PORT_CSC;
1379 if (ohci->rhstatus & OHCI_RHS_DRWE) {
1380 /* TODO: CSC is a wakeup event */
1381 }
1382 return 0;
1383 }
1384
1385 if (ohci->rhport[i].ctrl & val)
1386 ret = 0;
1387
1388 /* set the bit */
1389 ohci->rhport[i].ctrl |= val;
1390
1391 return ret;
1392 }
1393
1394 /* Set the frame interval - frame interval toggle is manipulated by the hcd only */
1395 static void ohci_set_frame_interval(OHCIState *ohci, uint16_t val)
1396 {
1397 val &= OHCI_FMI_FI;
1398
1399 if (val != ohci->fi) {
1400 trace_usb_ohci_set_frame_interval(ohci->name, ohci->fi, ohci->fi);
1401 }
1402
1403 ohci->fi = val;
1404 }
1405
1406 static void ohci_port_power(OHCIState *ohci, int i, int p)
1407 {
1408 if (p) {
1409 ohci->rhport[i].ctrl |= OHCI_PORT_PPS;
1410 } else {
1411 ohci->rhport[i].ctrl &= ~(OHCI_PORT_PPS|
1412 OHCI_PORT_CCS|
1413 OHCI_PORT_PSS|
1414 OHCI_PORT_PRS);
1415 }
1416 }
1417
1418 /* Set HcControlRegister */
1419 static void ohci_set_ctl(OHCIState *ohci, uint32_t val)
1420 {
1421 uint32_t old_state;
1422 uint32_t new_state;
1423
1424 old_state = ohci->ctl & OHCI_CTL_HCFS;
1425 ohci->ctl = val;
1426 new_state = ohci->ctl & OHCI_CTL_HCFS;
1427
1428 /* no state change */
1429 if (old_state == new_state)
1430 return;
1431
1432 trace_usb_ohci_set_ctl(ohci->name, new_state);
1433 switch (new_state) {
1434 case OHCI_USB_OPERATIONAL:
1435 ohci_bus_start(ohci);
1436 break;
1437 case OHCI_USB_SUSPEND:
1438 ohci_bus_stop(ohci);
1439 break;
1440 case OHCI_USB_RESUME:
1441 trace_usb_ohci_resume(ohci->name);
1442 break;
1443 case OHCI_USB_RESET:
1444 ohci_reset(ohci);
1445 break;
1446 }
1447 }
1448
1449 static uint32_t ohci_get_frame_remaining(OHCIState *ohci)
1450 {
1451 uint16_t fr;
1452 int64_t tks;
1453
1454 if ((ohci->ctl & OHCI_CTL_HCFS) != OHCI_USB_OPERATIONAL)
1455 return (ohci->frt << 31);
1456
1457 /* Being in USB operational state guarnatees sof_time was
1458 * set already.
1459 */
1460 tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time;
1461
1462 /* avoid muldiv if possible */
1463 if (tks >= usb_frame_time)
1464 return (ohci->frt << 31);
1465
1466 tks = muldiv64(1, tks, usb_bit_time);
1467 fr = (uint16_t)(ohci->fi - tks);
1468
1469 return (ohci->frt << 31) | fr;
1470 }
1471
1472
1473 /* Set root hub status */
1474 static void ohci_set_hub_status(OHCIState *ohci, uint32_t val)
1475 {
1476 uint32_t old_state;
1477
1478 old_state = ohci->rhstatus;
1479
1480 /* write 1 to clear OCIC */
1481 if (val & OHCI_RHS_OCIC)
1482 ohci->rhstatus &= ~OHCI_RHS_OCIC;
1483
1484 if (val & OHCI_RHS_LPS) {
1485 int i;
1486
1487 for (i = 0; i < ohci->num_ports; i++)
1488 ohci_port_power(ohci, i, 0);
1489 trace_usb_ohci_hub_power_down();
1490 }
1491
1492 if (val & OHCI_RHS_LPSC) {
1493 int i;
1494
1495 for (i = 0; i < ohci->num_ports; i++)
1496 ohci_port_power(ohci, i, 1);
1497 trace_usb_ohci_hub_power_up();
1498 }
1499
1500 if (val & OHCI_RHS_DRWE)
1501 ohci->rhstatus |= OHCI_RHS_DRWE;
1502
1503 if (val & OHCI_RHS_CRWE)
1504 ohci->rhstatus &= ~OHCI_RHS_DRWE;
1505
1506 if (old_state != ohci->rhstatus)
1507 ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
1508 }
1509
1510 /* Set root hub port status */
1511 static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val)
1512 {
1513 uint32_t old_state;
1514 OHCIPort *port;
1515
1516 port = &ohci->rhport[portnum];
1517 old_state = port->ctrl;
1518
1519 /* Write to clear CSC, PESC, PSSC, OCIC, PRSC */
1520 if (val & OHCI_PORT_WTC)
1521 port->ctrl &= ~(val & OHCI_PORT_WTC);
1522
1523 if (val & OHCI_PORT_CCS)
1524 port->ctrl &= ~OHCI_PORT_PES;
1525
1526 ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PES);
1527
1528 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PSS)) {
1529 trace_usb_ohci_port_suspend(portnum);
1530 }
1531
1532 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PRS)) {
1533 trace_usb_ohci_port_reset(portnum);
1534 usb_device_reset(port->port.dev);
1535 port->ctrl &= ~OHCI_PORT_PRS;
1536 /* ??? Should this also set OHCI_PORT_PESC. */
1537 port->ctrl |= OHCI_PORT_PES | OHCI_PORT_PRSC;
1538 }
1539
1540 /* Invert order here to ensure in ambiguous case, device is
1541 * powered up...
1542 */
1543 if (val & OHCI_PORT_LSDA)
1544 ohci_port_power(ohci, portnum, 0);
1545 if (val & OHCI_PORT_PPS)
1546 ohci_port_power(ohci, portnum, 1);
1547
1548 if (old_state != port->ctrl)
1549 ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
1550 }
1551
1552 static uint64_t ohci_mem_read(void *opaque,
1553 hwaddr addr,
1554 unsigned size)
1555 {
1556 OHCIState *ohci = opaque;
1557 uint32_t retval;
1558
1559 /* Only aligned reads are allowed on OHCI */
1560 if (addr & 3) {
1561 trace_usb_ohci_mem_read_unaligned(addr);
1562 return 0xffffffff;
1563 } else if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
1564 /* HcRhPortStatus */
1565 retval = ohci->rhport[(addr - 0x54) >> 2].ctrl | OHCI_PORT_PPS;
1566 } else {
1567 switch (addr >> 2) {
1568 case 0: /* HcRevision */
1569 retval = 0x10;
1570 break;
1571
1572 case 1: /* HcControl */
1573 retval = ohci->ctl;
1574 break;
1575
1576 case 2: /* HcCommandStatus */
1577 retval = ohci->status;
1578 break;
1579
1580 case 3: /* HcInterruptStatus */
1581 retval = ohci->intr_status;
1582 break;
1583
1584 case 4: /* HcInterruptEnable */
1585 case 5: /* HcInterruptDisable */
1586 retval = ohci->intr;
1587 break;
1588
1589 case 6: /* HcHCCA */
1590 retval = ohci->hcca;
1591 break;
1592
1593 case 7: /* HcPeriodCurrentED */
1594 retval = ohci->per_cur;
1595 break;
1596
1597 case 8: /* HcControlHeadED */
1598 retval = ohci->ctrl_head;
1599 break;
1600
1601 case 9: /* HcControlCurrentED */
1602 retval = ohci->ctrl_cur;
1603 break;
1604
1605 case 10: /* HcBulkHeadED */
1606 retval = ohci->bulk_head;
1607 break;
1608
1609 case 11: /* HcBulkCurrentED */
1610 retval = ohci->bulk_cur;
1611 break;
1612
1613 case 12: /* HcDoneHead */
1614 retval = ohci->done;
1615 break;
1616
1617 case 13: /* HcFmInterretval */
1618 retval = (ohci->fit << 31) | (ohci->fsmps << 16) | (ohci->fi);
1619 break;
1620
1621 case 14: /* HcFmRemaining */
1622 retval = ohci_get_frame_remaining(ohci);
1623 break;
1624
1625 case 15: /* HcFmNumber */
1626 retval = ohci->frame_number;
1627 break;
1628
1629 case 16: /* HcPeriodicStart */
1630 retval = ohci->pstart;
1631 break;
1632
1633 case 17: /* HcLSThreshold */
1634 retval = ohci->lst;
1635 break;
1636
1637 case 18: /* HcRhDescriptorA */
1638 retval = ohci->rhdesc_a;
1639 break;
1640
1641 case 19: /* HcRhDescriptorB */
1642 retval = ohci->rhdesc_b;
1643 break;
1644
1645 case 20: /* HcRhStatus */
1646 retval = ohci->rhstatus;
1647 break;
1648
1649 /* PXA27x specific registers */
1650 case 24: /* HcStatus */
1651 retval = ohci->hstatus & ohci->hmask;
1652 break;
1653
1654 case 25: /* HcHReset */
1655 retval = ohci->hreset;
1656 break;
1657
1658 case 26: /* HcHInterruptEnable */
1659 retval = ohci->hmask;
1660 break;
1661
1662 case 27: /* HcHInterruptTest */
1663 retval = ohci->htest;
1664 break;
1665
1666 default:
1667 trace_usb_ohci_mem_read_bad_offset(addr);
1668 retval = 0xffffffff;
1669 }
1670 }
1671
1672 return retval;
1673 }
1674
1675 static void ohci_mem_write(void *opaque,
1676 hwaddr addr,
1677 uint64_t val,
1678 unsigned size)
1679 {
1680 OHCIState *ohci = opaque;
1681
1682 /* Only aligned reads are allowed on OHCI */
1683 if (addr & 3) {
1684 trace_usb_ohci_mem_write_unaligned(addr);
1685 return;
1686 }
1687
1688 if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
1689 /* HcRhPortStatus */
1690 ohci_port_set_status(ohci, (addr - 0x54) >> 2, val);
1691 return;
1692 }
1693
1694 switch (addr >> 2) {
1695 case 1: /* HcControl */
1696 ohci_set_ctl(ohci, val);
1697 break;
1698
1699 case 2: /* HcCommandStatus */
1700 /* SOC is read-only */
1701 val = (val & ~OHCI_STATUS_SOC);
1702
1703 /* Bits written as '0' remain unchanged in the register */
1704 ohci->status |= val;
1705
1706 if (ohci->status & OHCI_STATUS_HCR)
1707 ohci_reset(ohci);
1708 break;
1709
1710 case 3: /* HcInterruptStatus */
1711 ohci->intr_status &= ~val;
1712 ohci_intr_update(ohci);
1713 break;
1714
1715 case 4: /* HcInterruptEnable */
1716 ohci->intr |= val;
1717 ohci_intr_update(ohci);
1718 break;
1719
1720 case 5: /* HcInterruptDisable */
1721 ohci->intr &= ~val;
1722 ohci_intr_update(ohci);
1723 break;
1724
1725 case 6: /* HcHCCA */
1726 ohci->hcca = val & OHCI_HCCA_MASK;
1727 break;
1728
1729 case 7: /* HcPeriodCurrentED */
1730 /* Ignore writes to this read-only register, Linux does them */
1731 break;
1732
1733 case 8: /* HcControlHeadED */
1734 ohci->ctrl_head = val & OHCI_EDPTR_MASK;
1735 break;
1736
1737 case 9: /* HcControlCurrentED */
1738 ohci->ctrl_cur = val & OHCI_EDPTR_MASK;
1739 break;
1740
1741 case 10: /* HcBulkHeadED */
1742 ohci->bulk_head = val & OHCI_EDPTR_MASK;
1743 break;
1744
1745 case 11: /* HcBulkCurrentED */
1746 ohci->bulk_cur = val & OHCI_EDPTR_MASK;
1747 break;
1748
1749 case 13: /* HcFmInterval */
1750 ohci->fsmps = (val & OHCI_FMI_FSMPS) >> 16;
1751 ohci->fit = (val & OHCI_FMI_FIT) >> 31;
1752 ohci_set_frame_interval(ohci, val);
1753 break;
1754
1755 case 15: /* HcFmNumber */
1756 break;
1757
1758 case 16: /* HcPeriodicStart */
1759 ohci->pstart = val & 0xffff;
1760 break;
1761
1762 case 17: /* HcLSThreshold */
1763 ohci->lst = val & 0xffff;
1764 break;
1765
1766 case 18: /* HcRhDescriptorA */
1767 ohci->rhdesc_a &= ~OHCI_RHA_RW_MASK;
1768 ohci->rhdesc_a |= val & OHCI_RHA_RW_MASK;
1769 break;
1770
1771 case 19: /* HcRhDescriptorB */
1772 break;
1773
1774 case 20: /* HcRhStatus */
1775 ohci_set_hub_status(ohci, val);
1776 break;
1777
1778 /* PXA27x specific registers */
1779 case 24: /* HcStatus */
1780 ohci->hstatus &= ~(val & ohci->hmask);
1781 break;
1782
1783 case 25: /* HcHReset */
1784 ohci->hreset = val & ~OHCI_HRESET_FSBIR;
1785 if (val & OHCI_HRESET_FSBIR)
1786 ohci_reset(ohci);
1787 break;
1788
1789 case 26: /* HcHInterruptEnable */
1790 ohci->hmask = val;
1791 break;
1792
1793 case 27: /* HcHInterruptTest */
1794 ohci->htest = val;
1795 break;
1796
1797 default:
1798 trace_usb_ohci_mem_write_bad_offset(addr);
1799 break;
1800 }
1801 }
1802
1803 static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev)
1804 {
1805 if (ohci->async_td &&
1806 usb_packet_is_inflight(&ohci->usb_packet) &&
1807 ohci->usb_packet.ep->dev == dev) {
1808 usb_cancel_packet(&ohci->usb_packet);
1809 ohci->async_td = 0;
1810 }
1811 }
1812
1813 static const MemoryRegionOps ohci_mem_ops = {
1814 .read = ohci_mem_read,
1815 .write = ohci_mem_write,
1816 .endianness = DEVICE_LITTLE_ENDIAN,
1817 };
1818
1819 static USBPortOps ohci_port_ops = {
1820 .attach = ohci_attach,
1821 .detach = ohci_detach,
1822 .child_detach = ohci_child_detach,
1823 .wakeup = ohci_wakeup,
1824 .complete = ohci_async_complete_packet,
1825 };
1826
1827 static USBBusOps ohci_bus_ops = {
1828 };
1829
1830 static void usb_ohci_init(OHCIState *ohci, DeviceState *dev,
1831 int num_ports, dma_addr_t localmem_base,
1832 char *masterbus, uint32_t firstport,
1833 AddressSpace *as, Error **errp)
1834 {
1835 Error *err = NULL;
1836 int i;
1837
1838 ohci->as = as;
1839
1840 if (usb_frame_time == 0) {
1841 #ifdef OHCI_TIME_WARP
1842 usb_frame_time = get_ticks_per_sec();
1843 usb_bit_time = muldiv64(1, get_ticks_per_sec(), USB_HZ/1000);
1844 #else
1845 usb_frame_time = muldiv64(1, get_ticks_per_sec(), 1000);
1846 if (get_ticks_per_sec() >= USB_HZ) {
1847 usb_bit_time = muldiv64(1, get_ticks_per_sec(), USB_HZ);
1848 } else {
1849 usb_bit_time = 1;
1850 }
1851 #endif
1852 trace_usb_ohci_init_time(usb_frame_time, usb_bit_time);
1853 }
1854
1855 ohci->num_ports = num_ports;
1856 if (masterbus) {
1857 USBPort *ports[OHCI_MAX_PORTS];
1858 for(i = 0; i < num_ports; i++) {
1859 ports[i] = &ohci->rhport[i].port;
1860 }
1861 usb_register_companion(masterbus, ports, num_ports,
1862 firstport, ohci, &ohci_port_ops,
1863 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL,
1864 &err);
1865 if (err) {
1866 error_propagate(errp, err);
1867 return;
1868 }
1869 } else {
1870 usb_bus_new(&ohci->bus, sizeof(ohci->bus), &ohci_bus_ops, dev);
1871 for (i = 0; i < num_ports; i++) {
1872 usb_register_port(&ohci->bus, &ohci->rhport[i].port,
1873 ohci, i, &ohci_port_ops,
1874 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
1875 }
1876 }
1877
1878 memory_region_init_io(&ohci->mem, OBJECT(dev), &ohci_mem_ops,
1879 ohci, "ohci", 256);
1880 ohci->localmem_base = localmem_base;
1881
1882 ohci->name = object_get_typename(OBJECT(dev));
1883 usb_packet_init(&ohci->usb_packet);
1884
1885 ohci->async_td = 0;
1886 }
1887
1888 #define TYPE_PCI_OHCI "pci-ohci"
1889 #define PCI_OHCI(obj) OBJECT_CHECK(OHCIPCIState, (obj), TYPE_PCI_OHCI)
1890
1891 typedef struct {
1892 /*< private >*/
1893 PCIDevice parent_obj;
1894 /*< public >*/
1895
1896 OHCIState state;
1897 char *masterbus;
1898 uint32_t num_ports;
1899 uint32_t firstport;
1900 } OHCIPCIState;
1901
1902 /** A typical O/EHCI will stop operating, set itself into error state
1903 * (which can be queried by MMIO) and will set PERR in its config
1904 * space to signal that it got an error
1905 */
1906 static void ohci_die(OHCIState *ohci)
1907 {
1908 OHCIPCIState *dev = container_of(ohci, OHCIPCIState, state);
1909
1910 trace_usb_ohci_die();
1911
1912 ohci_set_interrupt(ohci, OHCI_INTR_UE);
1913 ohci_bus_stop(ohci);
1914 pci_set_word(dev->parent_obj.config + PCI_STATUS,
1915 PCI_STATUS_DETECTED_PARITY);
1916 }
1917
1918 static void usb_ohci_realize_pci(PCIDevice *dev, Error **errp)
1919 {
1920 Error *err = NULL;
1921 OHCIPCIState *ohci = PCI_OHCI(dev);
1922
1923 dev->config[PCI_CLASS_PROG] = 0x10; /* OHCI */
1924 dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */
1925
1926 usb_ohci_init(&ohci->state, DEVICE(dev), ohci->num_ports, 0,
1927 ohci->masterbus, ohci->firstport,
1928 pci_get_address_space(dev), &err);
1929 if (err) {
1930 error_propagate(errp, err);
1931 return;
1932 }
1933
1934 ohci->state.irq = pci_allocate_irq(dev);
1935 pci_register_bar(dev, 0, 0, &ohci->state.mem);
1936 }
1937
1938 static void usb_ohci_exit(PCIDevice *dev)
1939 {
1940 OHCIPCIState *ohci = PCI_OHCI(dev);
1941 OHCIState *s = &ohci->state;
1942
1943 trace_usb_ohci_exit(s->name);
1944 ohci_bus_stop(s);
1945
1946 if (s->async_td) {
1947 usb_cancel_packet(&s->usb_packet);
1948 s->async_td = 0;
1949 }
1950 ohci_stop_endpoints(s);
1951
1952 if (!ohci->masterbus) {
1953 usb_bus_release(&s->bus);
1954 }
1955 }
1956
1957 static void usb_ohci_reset_pci(DeviceState *d)
1958 {
1959 PCIDevice *dev = PCI_DEVICE(d);
1960 OHCIPCIState *ohci = PCI_OHCI(dev);
1961 OHCIState *s = &ohci->state;
1962
1963 ohci_reset(s);
1964 }
1965
1966 #define TYPE_SYSBUS_OHCI "sysbus-ohci"
1967 #define SYSBUS_OHCI(obj) OBJECT_CHECK(OHCISysBusState, (obj), TYPE_SYSBUS_OHCI)
1968
1969 typedef struct {
1970 /*< private >*/
1971 SysBusDevice parent_obj;
1972 /*< public >*/
1973
1974 OHCIState ohci;
1975 uint32_t num_ports;
1976 dma_addr_t dma_offset;
1977 } OHCISysBusState;
1978
1979 static void ohci_realize_pxa(DeviceState *dev, Error **errp)
1980 {
1981 OHCISysBusState *s = SYSBUS_OHCI(dev);
1982 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1983
1984 /* Cannot fail as we pass NULL for masterbus */
1985 usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset, NULL, 0,
1986 &address_space_memory, &error_abort);
1987 sysbus_init_irq(sbd, &s->ohci.irq);
1988 sysbus_init_mmio(sbd, &s->ohci.mem);
1989 }
1990
1991 static void usb_ohci_reset_sysbus(DeviceState *dev)
1992 {
1993 OHCISysBusState *s = SYSBUS_OHCI(dev);
1994 OHCIState *ohci = &s->ohci;
1995
1996 ohci_reset(ohci);
1997 }
1998
1999 static Property ohci_pci_properties[] = {
2000 DEFINE_PROP_STRING("masterbus", OHCIPCIState, masterbus),
2001 DEFINE_PROP_UINT32("num-ports", OHCIPCIState, num_ports, 3),
2002 DEFINE_PROP_UINT32("firstport", OHCIPCIState, firstport, 0),
2003 DEFINE_PROP_END_OF_LIST(),
2004 };
2005
2006 static const VMStateDescription vmstate_ohci_state_port = {
2007 .name = "ohci-core/port",
2008 .version_id = 1,
2009 .minimum_version_id = 1,
2010 .fields = (VMStateField[]) {
2011 VMSTATE_UINT32(ctrl, OHCIPort),
2012 VMSTATE_END_OF_LIST()
2013 },
2014 };
2015
2016 static bool ohci_eof_timer_needed(void *opaque)
2017 {
2018 OHCIState *ohci = opaque;
2019
2020 return ohci->eof_timer != NULL;
2021 }
2022
2023 static int ohci_eof_timer_pre_load(void *opaque)
2024 {
2025 OHCIState *ohci = opaque;
2026
2027 ohci_bus_start(ohci);
2028
2029 return 0;
2030 }
2031
2032 static const VMStateDescription vmstate_ohci_eof_timer = {
2033 .name = "ohci-core/eof-timer",
2034 .version_id = 1,
2035 .minimum_version_id = 1,
2036 .pre_load = ohci_eof_timer_pre_load,
2037 .needed = ohci_eof_timer_needed,
2038 .fields = (VMStateField[]) {
2039 VMSTATE_TIMER_PTR(eof_timer, OHCIState),
2040 VMSTATE_END_OF_LIST()
2041 },
2042 };
2043
2044 static const VMStateDescription vmstate_ohci_state = {
2045 .name = "ohci-core",
2046 .version_id = 1,
2047 .minimum_version_id = 1,
2048 .fields = (VMStateField[]) {
2049 VMSTATE_INT64(sof_time, OHCIState),
2050 VMSTATE_UINT32(ctl, OHCIState),
2051 VMSTATE_UINT32(status, OHCIState),
2052 VMSTATE_UINT32(intr_status, OHCIState),
2053 VMSTATE_UINT32(intr, OHCIState),
2054 VMSTATE_UINT32(hcca, OHCIState),
2055 VMSTATE_UINT32(ctrl_head, OHCIState),
2056 VMSTATE_UINT32(ctrl_cur, OHCIState),
2057 VMSTATE_UINT32(bulk_head, OHCIState),
2058 VMSTATE_UINT32(bulk_cur, OHCIState),
2059 VMSTATE_UINT32(per_cur, OHCIState),
2060 VMSTATE_UINT32(done, OHCIState),
2061 VMSTATE_INT32(done_count, OHCIState),
2062 VMSTATE_UINT16(fsmps, OHCIState),
2063 VMSTATE_UINT8(fit, OHCIState),
2064 VMSTATE_UINT16(fi, OHCIState),
2065 VMSTATE_UINT8(frt, OHCIState),
2066 VMSTATE_UINT16(frame_number, OHCIState),
2067 VMSTATE_UINT16(padding, OHCIState),
2068 VMSTATE_UINT32(pstart, OHCIState),
2069 VMSTATE_UINT32(lst, OHCIState),
2070 VMSTATE_UINT32(rhdesc_a, OHCIState),
2071 VMSTATE_UINT32(rhdesc_b, OHCIState),
2072 VMSTATE_UINT32(rhstatus, OHCIState),
2073 VMSTATE_STRUCT_ARRAY(rhport, OHCIState, OHCI_MAX_PORTS, 0,
2074 vmstate_ohci_state_port, OHCIPort),
2075 VMSTATE_UINT32(hstatus, OHCIState),
2076 VMSTATE_UINT32(hmask, OHCIState),
2077 VMSTATE_UINT32(hreset, OHCIState),
2078 VMSTATE_UINT32(htest, OHCIState),
2079 VMSTATE_UINT32(old_ctl, OHCIState),
2080 VMSTATE_UINT8_ARRAY(usb_buf, OHCIState, 8192),
2081 VMSTATE_UINT32(async_td, OHCIState),
2082 VMSTATE_BOOL(async_complete, OHCIState),
2083 VMSTATE_END_OF_LIST()
2084 },
2085 .subsections = (const VMStateDescription*[]) {
2086 &vmstate_ohci_eof_timer,
2087 NULL
2088 }
2089 };
2090
2091 static const VMStateDescription vmstate_ohci = {
2092 .name = "ohci",
2093 .version_id = 1,
2094 .minimum_version_id = 1,
2095 .fields = (VMStateField[]) {
2096 VMSTATE_PCI_DEVICE(parent_obj, OHCIPCIState),
2097 VMSTATE_STRUCT(state, OHCIPCIState, 1, vmstate_ohci_state, OHCIState),
2098 VMSTATE_END_OF_LIST()
2099 }
2100 };
2101
2102 static void ohci_pci_class_init(ObjectClass *klass, void *data)
2103 {
2104 DeviceClass *dc = DEVICE_CLASS(klass);
2105 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2106
2107 k->realize = usb_ohci_realize_pci;
2108 k->exit = usb_ohci_exit;
2109 k->vendor_id = PCI_VENDOR_ID_APPLE;
2110 k->device_id = PCI_DEVICE_ID_APPLE_IPID_USB;
2111 k->class_id = PCI_CLASS_SERIAL_USB;
2112 set_bit(DEVICE_CATEGORY_USB, dc->categories);
2113 dc->desc = "Apple USB Controller";
2114 dc->props = ohci_pci_properties;
2115 dc->hotpluggable = false;
2116 dc->vmsd = &vmstate_ohci;
2117 dc->reset = usb_ohci_reset_pci;
2118 }
2119
2120 static const TypeInfo ohci_pci_info = {
2121 .name = TYPE_PCI_OHCI,
2122 .parent = TYPE_PCI_DEVICE,
2123 .instance_size = sizeof(OHCIPCIState),
2124 .class_init = ohci_pci_class_init,
2125 };
2126
2127 static Property ohci_sysbus_properties[] = {
2128 DEFINE_PROP_UINT32("num-ports", OHCISysBusState, num_ports, 3),
2129 DEFINE_PROP_DMAADDR("dma-offset", OHCISysBusState, dma_offset, 3),
2130 DEFINE_PROP_END_OF_LIST(),
2131 };
2132
2133 static void ohci_sysbus_class_init(ObjectClass *klass, void *data)
2134 {
2135 DeviceClass *dc = DEVICE_CLASS(klass);
2136
2137 dc->realize = ohci_realize_pxa;
2138 set_bit(DEVICE_CATEGORY_USB, dc->categories);
2139 dc->desc = "OHCI USB Controller";
2140 dc->props = ohci_sysbus_properties;
2141 dc->reset = usb_ohci_reset_sysbus;
2142 }
2143
2144 static const TypeInfo ohci_sysbus_info = {
2145 .name = TYPE_SYSBUS_OHCI,
2146 .parent = TYPE_SYS_BUS_DEVICE,
2147 .instance_size = sizeof(OHCISysBusState),
2148 .class_init = ohci_sysbus_class_init,
2149 };
2150
2151 static void ohci_register_types(void)
2152 {
2153 type_register_static(&ohci_pci_info);
2154 type_register_static(&ohci_sysbus_info);
2155 }
2156
2157 type_init(ohci_register_types)
QEmu