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Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging
[qemu/ar7.git] / hw / usb / hcd-ohci.c
blob3ada35e954e86262263d449750b7cb6c7e427516
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 "qemu/osdep.h"
29 #include "hw/hw.h"
30 #include "qapi/error.h"
31 #include "qemu/timer.h"
32 #include "hw/usb.h"
33 #include "hw/pci/pci.h"
34 #include "hw/sysbus.h"
35 #include "hw/qdev-dma.h"
36 #include "trace.h"
37
38 /* This causes frames to occur 1000x slower */
39 //#define OHCI_TIME_WARP 1
40
41 /* Number of Downstream Ports on the root hub. */
42
43 #define OHCI_MAX_PORTS 15
44
45 #define ED_LINK_LIMIT 32
46
47 static int64_t usb_frame_time;
48 static int64_t usb_bit_time;
49
50 typedef struct OHCIPort {
51 USBPort port;
52 uint32_t ctrl;
53 } OHCIPort;
54
55 typedef struct {
56 USBBus bus;
57 qemu_irq irq;
58 MemoryRegion mem;
59 AddressSpace *as;
60 int num_ports;
61 const char *name;
62
63 QEMUTimer *eof_timer;
64 int64_t sof_time;
65
66 /* OHCI state */
67 /* Control partition */
68 uint32_t ctl, status;
69 uint32_t intr_status;
70 uint32_t intr;
71
72 /* memory pointer partition */
73 uint32_t hcca;
74 uint32_t ctrl_head, ctrl_cur;
75 uint32_t bulk_head, bulk_cur;
76 uint32_t per_cur;
77 uint32_t done;
78 int32_t done_count;
79
80 /* Frame counter partition */
81 uint16_t fsmps;
82 uint8_t fit;
83 uint16_t fi;
84 uint8_t frt;
85 uint16_t frame_number;
86 uint16_t padding;
87 uint32_t pstart;
88 uint32_t lst;
89
90 /* Root Hub partition */
91 uint32_t rhdesc_a, rhdesc_b;
92 uint32_t rhstatus;
93 OHCIPort rhport[OHCI_MAX_PORTS];
94
95 /* PXA27x Non-OHCI events */
96 uint32_t hstatus;
97 uint32_t hmask;
98 uint32_t hreset;
99 uint32_t htest;
100
101 /* SM501 local memory offset */
102 dma_addr_t localmem_base;
103
104 /* Active packets. */
105 uint32_t old_ctl;
106 USBPacket usb_packet;
107 uint8_t usb_buf[8192];
108 uint32_t async_td;
109 bool async_complete;
110
111 } OHCIState;
112
113 /* Host Controller Communications Area */
114 struct ohci_hcca {
115 uint32_t intr[32];
116 uint16_t frame, pad;
117 uint32_t done;
118 };
119 #define HCCA_WRITEBACK_OFFSET offsetof(struct ohci_hcca, frame)
120 #define HCCA_WRITEBACK_SIZE 8 /* frame, pad, done */
121
122 #define ED_WBACK_OFFSET offsetof(struct ohci_ed, head)
123 #define ED_WBACK_SIZE 4
124
125 static void ohci_bus_stop(OHCIState *ohci);
126 static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev);
127
128 /* Bitfields for the first word of an Endpoint Desciptor. */
129 #define OHCI_ED_FA_SHIFT 0
130 #define OHCI_ED_FA_MASK (0x7f<<OHCI_ED_FA_SHIFT)
131 #define OHCI_ED_EN_SHIFT 7
132 #define OHCI_ED_EN_MASK (0xf<<OHCI_ED_EN_SHIFT)
133 #define OHCI_ED_D_SHIFT 11
134 #define OHCI_ED_D_MASK (3<<OHCI_ED_D_SHIFT)
135 #define OHCI_ED_S (1<<13)
136 #define OHCI_ED_K (1<<14)
137 #define OHCI_ED_F (1<<15)
138 #define OHCI_ED_MPS_SHIFT 16
139 #define OHCI_ED_MPS_MASK (0x7ff<<OHCI_ED_MPS_SHIFT)
140
141 /* Flags in the head field of an Endpoint Desciptor. */
142 #define OHCI_ED_H 1
143 #define OHCI_ED_C 2
144
145 /* Bitfields for the first word of a Transfer Desciptor. */
146 #define OHCI_TD_R (1<<18)
147 #define OHCI_TD_DP_SHIFT 19
148 #define OHCI_TD_DP_MASK (3<<OHCI_TD_DP_SHIFT)
149 #define OHCI_TD_DI_SHIFT 21
150 #define OHCI_TD_DI_MASK (7<<OHCI_TD_DI_SHIFT)
151 #define OHCI_TD_T0 (1<<24)
152 #define OHCI_TD_T1 (1<<25)
153 #define OHCI_TD_EC_SHIFT 26
154 #define OHCI_TD_EC_MASK (3<<OHCI_TD_EC_SHIFT)
155 #define OHCI_TD_CC_SHIFT 28
156 #define OHCI_TD_CC_MASK (0xf<<OHCI_TD_CC_SHIFT)
157
158 /* Bitfields for the first word of an Isochronous Transfer Desciptor. */
159 /* CC & DI - same as in the General Transfer Desciptor */
160 #define OHCI_TD_SF_SHIFT 0
161 #define OHCI_TD_SF_MASK (0xffff<<OHCI_TD_SF_SHIFT)
162 #define OHCI_TD_FC_SHIFT 24
163 #define OHCI_TD_FC_MASK (7<<OHCI_TD_FC_SHIFT)
164
165 /* Isochronous Transfer Desciptor - Offset / PacketStatusWord */
166 #define OHCI_TD_PSW_CC_SHIFT 12
167 #define OHCI_TD_PSW_CC_MASK (0xf<<OHCI_TD_PSW_CC_SHIFT)
168 #define OHCI_TD_PSW_SIZE_SHIFT 0
169 #define OHCI_TD_PSW_SIZE_MASK (0xfff<<OHCI_TD_PSW_SIZE_SHIFT)
170
171 #define OHCI_PAGE_MASK 0xfffff000
172 #define OHCI_OFFSET_MASK 0xfff
173
174 #define OHCI_DPTR_MASK 0xfffffff0
175
176 #define OHCI_BM(val, field) \
177 (((val) & OHCI_##field##_MASK) >> OHCI_##field##_SHIFT)
178
179 #define OHCI_SET_BM(val, field, newval) do { \
180 val &= ~OHCI_##field##_MASK; \
181 val |= ((newval) << OHCI_##field##_SHIFT) & OHCI_##field##_MASK; \
182 } while(0)
183
184 /* endpoint descriptor */
185 struct ohci_ed {
186 uint32_t flags;
187 uint32_t tail;
188 uint32_t head;
189 uint32_t next;
190 };
191
192 /* General transfer descriptor */
193 struct ohci_td {
194 uint32_t flags;
195 uint32_t cbp;
196 uint32_t next;
197 uint32_t be;
198 };
199
200 /* Isochronous transfer descriptor */
201 struct ohci_iso_td {
202 uint32_t flags;
203 uint32_t bp;
204 uint32_t next;
205 uint32_t be;
206 uint16_t offset[8];
207 };
208
209 #define USB_HZ 12000000
210
211 /* OHCI Local stuff */
212 #define OHCI_CTL_CBSR ((1<<0)|(1<<1))
213 #define OHCI_CTL_PLE (1<<2)
214 #define OHCI_CTL_IE (1<<3)
215 #define OHCI_CTL_CLE (1<<4)
216 #define OHCI_CTL_BLE (1<<5)
217 #define OHCI_CTL_HCFS ((1<<6)|(1<<7))
218 #define OHCI_USB_RESET 0x00
219 #define OHCI_USB_RESUME 0x40
220 #define OHCI_USB_OPERATIONAL 0x80
221 #define OHCI_USB_SUSPEND 0xc0
222 #define OHCI_CTL_IR (1<<8)
223 #define OHCI_CTL_RWC (1<<9)
224 #define OHCI_CTL_RWE (1<<10)
225
226 #define OHCI_STATUS_HCR (1<<0)
227 #define OHCI_STATUS_CLF (1<<1)
228 #define OHCI_STATUS_BLF (1<<2)
229 #define OHCI_STATUS_OCR (1<<3)
230 #define OHCI_STATUS_SOC ((1<<6)|(1<<7))
231
232 #define OHCI_INTR_SO (1U<<0) /* Scheduling overrun */
233 #define OHCI_INTR_WD (1U<<1) /* HcDoneHead writeback */
234 #define OHCI_INTR_SF (1U<<2) /* Start of frame */
235 #define OHCI_INTR_RD (1U<<3) /* Resume detect */
236 #define OHCI_INTR_UE (1U<<4) /* Unrecoverable error */
237 #define OHCI_INTR_FNO (1U<<5) /* Frame number overflow */
238 #define OHCI_INTR_RHSC (1U<<6) /* Root hub status change */
239 #define OHCI_INTR_OC (1U<<30) /* Ownership change */
240 #define OHCI_INTR_MIE (1U<<31) /* Master Interrupt Enable */
241
242 #define OHCI_HCCA_SIZE 0x100
243 #define OHCI_HCCA_MASK 0xffffff00
244
245 #define OHCI_EDPTR_MASK 0xfffffff0
246
247 #define OHCI_FMI_FI 0x00003fff
248 #define OHCI_FMI_FSMPS 0xffff0000
249 #define OHCI_FMI_FIT 0x80000000
250
251 #define OHCI_FR_RT (1U<<31)
252
253 #define OHCI_LS_THRESH 0x628
254
255 #define OHCI_RHA_RW_MASK 0x00000000 /* Mask of supported features. */
256 #define OHCI_RHA_PSM (1<<8)
257 #define OHCI_RHA_NPS (1<<9)
258 #define OHCI_RHA_DT (1<<10)
259 #define OHCI_RHA_OCPM (1<<11)
260 #define OHCI_RHA_NOCP (1<<12)
261 #define OHCI_RHA_POTPGT_MASK 0xff000000
262
263 #define OHCI_RHS_LPS (1U<<0)
264 #define OHCI_RHS_OCI (1U<<1)
265 #define OHCI_RHS_DRWE (1U<<15)
266 #define OHCI_RHS_LPSC (1U<<16)
267 #define OHCI_RHS_OCIC (1U<<17)
268 #define OHCI_RHS_CRWE (1U<<31)
269
270 #define OHCI_PORT_CCS (1<<0)
271 #define OHCI_PORT_PES (1<<1)
272 #define OHCI_PORT_PSS (1<<2)
273 #define OHCI_PORT_POCI (1<<3)
274 #define OHCI_PORT_PRS (1<<4)
275 #define OHCI_PORT_PPS (1<<8)
276 #define OHCI_PORT_LSDA (1<<9)
277 #define OHCI_PORT_CSC (1<<16)
278 #define OHCI_PORT_PESC (1<<17)
279 #define OHCI_PORT_PSSC (1<<18)
280 #define OHCI_PORT_OCIC (1<<19)
281 #define OHCI_PORT_PRSC (1<<20)
282 #define OHCI_PORT_WTC (OHCI_PORT_CSC|OHCI_PORT_PESC|OHCI_PORT_PSSC \
283 |OHCI_PORT_OCIC|OHCI_PORT_PRSC)
284
285 #define OHCI_TD_DIR_SETUP 0x0
286 #define OHCI_TD_DIR_OUT 0x1
287 #define OHCI_TD_DIR_IN 0x2
288 #define OHCI_TD_DIR_RESERVED 0x3
289
290 #define OHCI_CC_NOERROR 0x0
291 #define OHCI_CC_CRC 0x1
292 #define OHCI_CC_BITSTUFFING 0x2
293 #define OHCI_CC_DATATOGGLEMISMATCH 0x3
294 #define OHCI_CC_STALL 0x4
295 #define OHCI_CC_DEVICENOTRESPONDING 0x5
296 #define OHCI_CC_PIDCHECKFAILURE 0x6
297 #define OHCI_CC_UNDEXPETEDPID 0x7
298 #define OHCI_CC_DATAOVERRUN 0x8
299 #define OHCI_CC_DATAUNDERRUN 0x9
300 #define OHCI_CC_BUFFEROVERRUN 0xc
301 #define OHCI_CC_BUFFERUNDERRUN 0xd
302
303 #define OHCI_HRESET_FSBIR (1 << 0)
304
305 static void ohci_die(OHCIState *ohci);
306
307 /* Update IRQ levels */
308 static inline void ohci_intr_update(OHCIState *ohci)
309 {
310 int level = 0;
311
312 if ((ohci->intr & OHCI_INTR_MIE) &&
313 (ohci->intr_status & ohci->intr))
314 level = 1;
315
316 qemu_set_irq(ohci->irq, level);
317 }
318
319 /* Set an interrupt */
320 static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr)
321 {
322 ohci->intr_status |= intr;
323 ohci_intr_update(ohci);
324 }
325
326 /* Attach or detach a device on a root hub port. */
327 static void ohci_attach(USBPort *port1)
328 {
329 OHCIState *s = port1->opaque;
330 OHCIPort *port = &s->rhport[port1->index];
331 uint32_t old_state = port->ctrl;
332
333 /* set connect status */
334 port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC;
335
336 /* update speed */
337 if (port->port.dev->speed == USB_SPEED_LOW) {
338 port->ctrl |= OHCI_PORT_LSDA;
339 } else {
340 port->ctrl &= ~OHCI_PORT_LSDA;
341 }
342
343 /* notify of remote-wakeup */
344 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
345 ohci_set_interrupt(s, OHCI_INTR_RD);
346 }
347
348 trace_usb_ohci_port_attach(port1->index);
349
350 if (old_state != port->ctrl) {
351 ohci_set_interrupt(s, OHCI_INTR_RHSC);
352 }
353 }
354
355 static void ohci_detach(USBPort *port1)
356 {
357 OHCIState *s = port1->opaque;
358 OHCIPort *port = &s->rhport[port1->index];
359 uint32_t old_state = port->ctrl;
360
361 ohci_async_cancel_device(s, port1->dev);
362
363 /* set connect status */
364 if (port->ctrl & OHCI_PORT_CCS) {
365 port->ctrl &= ~OHCI_PORT_CCS;
366 port->ctrl |= OHCI_PORT_CSC;
367 }
368 /* disable port */
369 if (port->ctrl & OHCI_PORT_PES) {
370 port->ctrl &= ~OHCI_PORT_PES;
371 port->ctrl |= OHCI_PORT_PESC;
372 }
373 trace_usb_ohci_port_detach(port1->index);
374
375 if (old_state != port->ctrl) {
376 ohci_set_interrupt(s, OHCI_INTR_RHSC);
377 }
378 }
379
380 static void ohci_wakeup(USBPort *port1)
381 {
382 OHCIState *s = port1->opaque;
383 OHCIPort *port = &s->rhport[port1->index];
384 uint32_t intr = 0;
385 if (port->ctrl & OHCI_PORT_PSS) {
386 trace_usb_ohci_port_wakeup(port1->index);
387 port->ctrl |= OHCI_PORT_PSSC;
388 port->ctrl &= ~OHCI_PORT_PSS;
389 intr = OHCI_INTR_RHSC;
390 }
391 /* Note that the controller can be suspended even if this port is not */
392 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
393 trace_usb_ohci_remote_wakeup(s->name);
394 /* This is the one state transition the controller can do by itself */
395 s->ctl &= ~OHCI_CTL_HCFS;
396 s->ctl |= OHCI_USB_RESUME;
397 /* In suspend mode only ResumeDetected is possible, not RHSC:
398 * see the OHCI spec 5.1.2.3.
399 */
400 intr = OHCI_INTR_RD;
401 }
402 ohci_set_interrupt(s, intr);
403 }
404
405 static void ohci_child_detach(USBPort *port1, USBDevice *child)
406 {
407 OHCIState *s = port1->opaque;
408
409 ohci_async_cancel_device(s, child);
410 }
411
412 static USBDevice *ohci_find_device(OHCIState *ohci, uint8_t addr)
413 {
414 USBDevice *dev;
415 int i;
416
417 for (i = 0; i < ohci->num_ports; i++) {
418 if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0) {
419 continue;
420 }
421 dev = usb_find_device(&ohci->rhport[i].port, addr);
422 if (dev != NULL) {
423 return dev;
424 }
425 }
426 return NULL;
427 }
428
429 static void ohci_stop_endpoints(OHCIState *ohci)
430 {
431 USBDevice *dev;
432 int i, j;
433
434 for (i = 0; i < ohci->num_ports; i++) {
435 dev = ohci->rhport[i].port.dev;
436 if (dev && dev->attached) {
437 usb_device_ep_stopped(dev, &dev->ep_ctl);
438 for (j = 0; j < USB_MAX_ENDPOINTS; j++) {
439 usb_device_ep_stopped(dev, &dev->ep_in[j]);
440 usb_device_ep_stopped(dev, &dev->ep_out[j]);
441 }
442 }
443 }
444 }
445
446 static void ohci_roothub_reset(OHCIState *ohci)
447 {
448 OHCIPort *port;
449 int i;
450
451 ohci_bus_stop(ohci);
452 ohci->rhdesc_a = OHCI_RHA_NPS | ohci->num_ports;
453 ohci->rhdesc_b = 0x0; /* Impl. specific */
454 ohci->rhstatus = 0;
455
456 for (i = 0; i < ohci->num_ports; i++) {
457 port = &ohci->rhport[i];
458 port->ctrl = 0;
459 if (port->port.dev && port->port.dev->attached) {
460 usb_port_reset(&port->port);
461 }
462 }
463 if (ohci->async_td) {
464 usb_cancel_packet(&ohci->usb_packet);
465 ohci->async_td = 0;
466 }
467 ohci_stop_endpoints(ohci);
468 }
469
470 /* Reset the controller */
471 static void ohci_soft_reset(OHCIState *ohci)
472 {
473 trace_usb_ohci_reset(ohci->name);
474
475 ohci_bus_stop(ohci);
476 ohci->ctl = (ohci->ctl & OHCI_CTL_IR) | OHCI_USB_SUSPEND;
477 ohci->old_ctl = 0;
478 ohci->status = 0;
479 ohci->intr_status = 0;
480 ohci->intr = OHCI_INTR_MIE;
481
482 ohci->hcca = 0;
483 ohci->ctrl_head = ohci->ctrl_cur = 0;
484 ohci->bulk_head = ohci->bulk_cur = 0;
485 ohci->per_cur = 0;
486 ohci->done = 0;
487 ohci->done_count = 7;
488
489 /* FSMPS is marked TBD in OCHI 1.0, what gives ffs?
490 * I took the value linux sets ...
491 */
492 ohci->fsmps = 0x2778;
493 ohci->fi = 0x2edf;
494 ohci->fit = 0;
495 ohci->frt = 0;
496 ohci->frame_number = 0;
497 ohci->pstart = 0;
498 ohci->lst = OHCI_LS_THRESH;
499 }
500
501 static void ohci_hard_reset(OHCIState *ohci)
502 {
503 ohci_soft_reset(ohci);
504 ohci->ctl = 0;
505 ohci_roothub_reset(ohci);
506 }
507
508 /* Get an array of dwords from main memory */
509 static inline int get_dwords(OHCIState *ohci,
510 dma_addr_t addr, uint32_t *buf, int num)
511 {
512 int i;
513
514 addr += ohci->localmem_base;
515
516 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
517 if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
518 return -1;
519 }
520 *buf = le32_to_cpu(*buf);
521 }
522
523 return 0;
524 }
525
526 /* Put an array of dwords in to main memory */
527 static inline int put_dwords(OHCIState *ohci,
528 dma_addr_t addr, uint32_t *buf, int num)
529 {
530 int i;
531
532 addr += ohci->localmem_base;
533
534 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
535 uint32_t tmp = cpu_to_le32(*buf);
536 if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
537 return -1;
538 }
539 }
540
541 return 0;
542 }
543
544 /* Get an array of words from main memory */
545 static inline int get_words(OHCIState *ohci,
546 dma_addr_t addr, uint16_t *buf, int num)
547 {
548 int i;
549
550 addr += ohci->localmem_base;
551
552 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
553 if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
554 return -1;
555 }
556 *buf = le16_to_cpu(*buf);
557 }
558
559 return 0;
560 }
561
562 /* Put an array of words in to main memory */
563 static inline int put_words(OHCIState *ohci,
564 dma_addr_t addr, uint16_t *buf, int num)
565 {
566 int i;
567
568 addr += ohci->localmem_base;
569
570 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
571 uint16_t tmp = cpu_to_le16(*buf);
572 if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
573 return -1;
574 }
575 }
576
577 return 0;
578 }
579
580 static inline int ohci_read_ed(OHCIState *ohci,
581 dma_addr_t addr, struct ohci_ed *ed)
582 {
583 return get_dwords(ohci, addr, (uint32_t *)ed, sizeof(*ed) >> 2);
584 }
585
586 static inline int ohci_read_td(OHCIState *ohci,
587 dma_addr_t addr, struct ohci_td *td)
588 {
589 return get_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
590 }
591
592 static inline int ohci_read_iso_td(OHCIState *ohci,
593 dma_addr_t addr, struct ohci_iso_td *td)
594 {
595 return get_dwords(ohci, addr, (uint32_t *)td, 4) ||
596 get_words(ohci, addr + 16, td->offset, 8);
597 }
598
599 static inline int ohci_read_hcca(OHCIState *ohci,
600 dma_addr_t addr, struct ohci_hcca *hcca)
601 {
602 return dma_memory_read(ohci->as, addr + ohci->localmem_base,
603 hcca, sizeof(*hcca));
604 }
605
606 static inline int ohci_put_ed(OHCIState *ohci,
607 dma_addr_t addr, struct ohci_ed *ed)
608 {
609 /* ed->tail is under control of the HCD.
610 * Since just ed->head is changed by HC, just write back this
611 */
612
613 return put_dwords(ohci, addr + ED_WBACK_OFFSET,
614 (uint32_t *)((char *)ed + ED_WBACK_OFFSET),
615 ED_WBACK_SIZE >> 2);
616 }
617
618 static inline int ohci_put_td(OHCIState *ohci,
619 dma_addr_t addr, struct ohci_td *td)
620 {
621 return put_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
622 }
623
624 static inline int ohci_put_iso_td(OHCIState *ohci,
625 dma_addr_t addr, struct ohci_iso_td *td)
626 {
627 return put_dwords(ohci, addr, (uint32_t *)td, 4) ||
628 put_words(ohci, addr + 16, td->offset, 8);
629 }
630
631 static inline int ohci_put_hcca(OHCIState *ohci,
632 dma_addr_t addr, struct ohci_hcca *hcca)
633 {
634 return dma_memory_write(ohci->as,
635 addr + ohci->localmem_base + HCCA_WRITEBACK_OFFSET,
636 (char *)hcca + HCCA_WRITEBACK_OFFSET,
637 HCCA_WRITEBACK_SIZE);
638 }
639
640 /* Read/Write the contents of a TD from/to main memory. */
641 static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td,
642 uint8_t *buf, int len, DMADirection dir)
643 {
644 dma_addr_t ptr, n;
645
646 ptr = td->cbp;
647 n = 0x1000 - (ptr & 0xfff);
648 if (n > len)
649 n = len;
650
651 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
652 return -1;
653 }
654 if (n == len) {
655 return 0;
656 }
657 ptr = td->be & ~0xfffu;
658 buf += n;
659 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
660 len - n, dir)) {
661 return -1;
662 }
663 return 0;
664 }
665
666 /* Read/Write the contents of an ISO TD from/to main memory. */
667 static int ohci_copy_iso_td(OHCIState *ohci,
668 uint32_t start_addr, uint32_t end_addr,
669 uint8_t *buf, int len, DMADirection dir)
670 {
671 dma_addr_t ptr, n;
672
673 ptr = start_addr;
674 n = 0x1000 - (ptr & 0xfff);
675 if (n > len)
676 n = len;
677
678 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
679 return -1;
680 }
681 if (n == len) {
682 return 0;
683 }
684 ptr = end_addr & ~0xfffu;
685 buf += n;
686 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
687 len - n, dir)) {
688 return -1;
689 }
690 return 0;
691 }
692
693 static void ohci_process_lists(OHCIState *ohci, int completion);
694
695 static void ohci_async_complete_packet(USBPort *port, USBPacket *packet)
696 {
697 OHCIState *ohci = container_of(packet, OHCIState, usb_packet);
698
699 trace_usb_ohci_async_complete();
700 ohci->async_complete = true;
701 ohci_process_lists(ohci, 1);
702 }
703
704 #define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b)))
705
706 static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
707 int completion)
708 {
709 int dir;
710 size_t len = 0;
711 const char *str = NULL;
712 int pid;
713 int ret;
714 int i;
715 USBDevice *dev;
716 USBEndpoint *ep;
717 struct ohci_iso_td iso_td;
718 uint32_t addr;
719 uint16_t starting_frame;
720 int16_t relative_frame_number;
721 int frame_count;
722 uint32_t start_offset, next_offset, end_offset = 0;
723 uint32_t start_addr, end_addr;
724
725 addr = ed->head & OHCI_DPTR_MASK;
726
727 if (ohci_read_iso_td(ohci, addr, &iso_td)) {
728 trace_usb_ohci_iso_td_read_failed(addr);
729 ohci_die(ohci);
730 return 1;
731 }
732
733 starting_frame = OHCI_BM(iso_td.flags, TD_SF);
734 frame_count = OHCI_BM(iso_td.flags, TD_FC);
735 relative_frame_number = USUB(ohci->frame_number, starting_frame);
736
737 trace_usb_ohci_iso_td_head(
738 ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK,
739 iso_td.flags, iso_td.bp, iso_td.next, iso_td.be,
740 ohci->frame_number, starting_frame,
741 frame_count, relative_frame_number);
742 trace_usb_ohci_iso_td_head_offset(
743 iso_td.offset[0], iso_td.offset[1],
744 iso_td.offset[2], iso_td.offset[3],
745 iso_td.offset[4], iso_td.offset[5],
746 iso_td.offset[6], iso_td.offset[7]);
747
748 if (relative_frame_number < 0) {
749 trace_usb_ohci_iso_td_relative_frame_number_neg(relative_frame_number);
750 return 1;
751 } else if (relative_frame_number > frame_count) {
752 /* ISO TD expired - retire the TD to the Done Queue and continue with
753 the next ISO TD of the same ED */
754 trace_usb_ohci_iso_td_relative_frame_number_big(relative_frame_number,
755 frame_count);
756 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
757 ed->head &= ~OHCI_DPTR_MASK;
758 ed->head |= (iso_td.next & OHCI_DPTR_MASK);
759 iso_td.next = ohci->done;
760 ohci->done = addr;
761 i = OHCI_BM(iso_td.flags, TD_DI);
762 if (i < ohci->done_count)
763 ohci->done_count = i;
764 if (ohci_put_iso_td(ohci, addr, &iso_td)) {
765 ohci_die(ohci);
766 return 1;
767 }
768 return 0;
769 }
770
771 dir = OHCI_BM(ed->flags, ED_D);
772 switch (dir) {
773 case OHCI_TD_DIR_IN:
774 str = "in";
775 pid = USB_TOKEN_IN;
776 break;
777 case OHCI_TD_DIR_OUT:
778 str = "out";
779 pid = USB_TOKEN_OUT;
780 break;
781 case OHCI_TD_DIR_SETUP:
782 str = "setup";
783 pid = USB_TOKEN_SETUP;
784 break;
785 default:
786 trace_usb_ohci_iso_td_bad_direction(dir);
787 return 1;
788 }
789
790 if (!iso_td.bp || !iso_td.be) {
791 trace_usb_ohci_iso_td_bad_bp_be(iso_td.bp, iso_td.be);
792 return 1;
793 }
794
795 start_offset = iso_td.offset[relative_frame_number];
796 next_offset = iso_td.offset[relative_frame_number + 1];
797
798 if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) ||
799 ((relative_frame_number < frame_count) &&
800 !(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) {
801 trace_usb_ohci_iso_td_bad_cc_not_accessed(start_offset, next_offset);
802 return 1;
803 }
804
805 if ((relative_frame_number < frame_count) && (start_offset > next_offset)) {
806 trace_usb_ohci_iso_td_bad_cc_overrun(start_offset, next_offset);
807 return 1;
808 }
809
810 if ((start_offset & 0x1000) == 0) {
811 start_addr = (iso_td.bp & OHCI_PAGE_MASK) |
812 (start_offset & OHCI_OFFSET_MASK);
813 } else {
814 start_addr = (iso_td.be & OHCI_PAGE_MASK) |
815 (start_offset & OHCI_OFFSET_MASK);
816 }
817
818 if (relative_frame_number < frame_count) {
819 end_offset = next_offset - 1;
820 if ((end_offset & 0x1000) == 0) {
821 end_addr = (iso_td.bp & OHCI_PAGE_MASK) |
822 (end_offset & OHCI_OFFSET_MASK);
823 } else {
824 end_addr = (iso_td.be & OHCI_PAGE_MASK) |
825 (end_offset & OHCI_OFFSET_MASK);
826 }
827 } else {
828 /* Last packet in the ISO TD */
829 end_addr = iso_td.be;
830 }
831
832 if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) {
833 len = (end_addr & OHCI_OFFSET_MASK) + 0x1001
834 - (start_addr & OHCI_OFFSET_MASK);
835 } else {
836 len = end_addr - start_addr + 1;
837 }
838
839 if (len && dir != OHCI_TD_DIR_IN) {
840 if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, len,
841 DMA_DIRECTION_TO_DEVICE)) {
842 ohci_die(ohci);
843 return 1;
844 }
845 }
846
847 if (!completion) {
848 bool int_req = relative_frame_number == frame_count &&
849 OHCI_BM(iso_td.flags, TD_DI) == 0;
850 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
851 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
852 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, false, int_req);
853 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, len);
854 usb_handle_packet(dev, &ohci->usb_packet);
855 if (ohci->usb_packet.status == USB_RET_ASYNC) {
856 usb_device_flush_ep_queue(dev, ep);
857 return 1;
858 }
859 }
860 if (ohci->usb_packet.status == USB_RET_SUCCESS) {
861 ret = ohci->usb_packet.actual_length;
862 } else {
863 ret = ohci->usb_packet.status;
864 }
865
866 trace_usb_ohci_iso_td_so(start_offset, end_offset, start_addr, end_addr,
867 str, len, ret);
868
869 /* Writeback */
870 if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) {
871 /* IN transfer succeeded */
872 if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, ret,
873 DMA_DIRECTION_FROM_DEVICE)) {
874 ohci_die(ohci);
875 return 1;
876 }
877 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
878 OHCI_CC_NOERROR);
879 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret);
880 } else if (dir == OHCI_TD_DIR_OUT && ret == len) {
881 /* OUT transfer succeeded */
882 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
883 OHCI_CC_NOERROR);
884 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0);
885 } else {
886 if (ret > (ssize_t) len) {
887 trace_usb_ohci_iso_td_data_overrun(ret, len);
888 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
889 OHCI_CC_DATAOVERRUN);
890 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
891 len);
892 } else if (ret >= 0) {
893 trace_usb_ohci_iso_td_data_underrun(ret);
894 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
895 OHCI_CC_DATAUNDERRUN);
896 } else {
897 switch (ret) {
898 case USB_RET_IOERROR:
899 case USB_RET_NODEV:
900 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
901 OHCI_CC_DEVICENOTRESPONDING);
902 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
903 0);
904 break;
905 case USB_RET_NAK:
906 case USB_RET_STALL:
907 trace_usb_ohci_iso_td_nak(ret);
908 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
909 OHCI_CC_STALL);
910 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
911 0);
912 break;
913 default:
914 trace_usb_ohci_iso_td_bad_response(ret);
915 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
916 OHCI_CC_UNDEXPETEDPID);
917 break;
918 }
919 }
920 }
921
922 if (relative_frame_number == frame_count) {
923 /* Last data packet of ISO TD - retire the TD to the Done Queue */
924 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR);
925 ed->head &= ~OHCI_DPTR_MASK;
926 ed->head |= (iso_td.next & OHCI_DPTR_MASK);
927 iso_td.next = ohci->done;
928 ohci->done = addr;
929 i = OHCI_BM(iso_td.flags, TD_DI);
930 if (i < ohci->done_count)
931 ohci->done_count = i;
932 }
933 if (ohci_put_iso_td(ohci, addr, &iso_td)) {
934 ohci_die(ohci);
935 }
936 return 1;
937 }
938
939 #ifdef trace_event_get_state
940 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
941 {
942 bool print16 = !!trace_event_get_state(TRACE_USB_OHCI_TD_PKT_SHORT);
943 bool printall = !!trace_event_get_state(TRACE_USB_OHCI_TD_PKT_FULL);
944 const int width = 16;
945 int i;
946 char tmp[3 * width + 1];
947 char *p = tmp;
948
949 if (!printall && !print16) {
950 return;
951 }
952
953 for (i = 0; ; i++) {
954 if (i && (!(i % width) || (i == len))) {
955 if (!printall) {
956 trace_usb_ohci_td_pkt_short(msg, tmp);
957 break;
958 }
959 trace_usb_ohci_td_pkt_full(msg, tmp);
960 p = tmp;
961 *p = 0;
962 }
963 if (i == len) {
964 break;
965 }
966
967 p += sprintf(p, " %.2x", buf[i]);
968 }
969 }
970 #else
971 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
972 {
973 }
974 #endif
975
976 /* Service a transport descriptor.
977 Returns nonzero to terminate processing of this endpoint. */
978
979 static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
980 {
981 int dir;
982 size_t len = 0, pktlen = 0;
983 const char *str = NULL;
984 int pid;
985 int ret;
986 int i;
987 USBDevice *dev;
988 USBEndpoint *ep;
989 struct ohci_td td;
990 uint32_t addr;
991 int flag_r;
992 int completion;
993
994 addr = ed->head & OHCI_DPTR_MASK;
995 /* See if this TD has already been submitted to the device. */
996 completion = (addr == ohci->async_td);
997 if (completion && !ohci->async_complete) {
998 trace_usb_ohci_td_skip_async();
999 return 1;
1000 }
1001 if (ohci_read_td(ohci, addr, &td)) {
1002 trace_usb_ohci_td_read_error(addr);
1003 ohci_die(ohci);
1004 return 1;
1005 }
1006
1007 dir = OHCI_BM(ed->flags, ED_D);
1008 switch (dir) {
1009 case OHCI_TD_DIR_OUT:
1010 case OHCI_TD_DIR_IN:
1011 /* Same value. */
1012 break;
1013 default:
1014 dir = OHCI_BM(td.flags, TD_DP);
1015 break;
1016 }
1017
1018 switch (dir) {
1019 case OHCI_TD_DIR_IN:
1020 str = "in";
1021 pid = USB_TOKEN_IN;
1022 break;
1023 case OHCI_TD_DIR_OUT:
1024 str = "out";
1025 pid = USB_TOKEN_OUT;
1026 break;
1027 case OHCI_TD_DIR_SETUP:
1028 str = "setup";
1029 pid = USB_TOKEN_SETUP;
1030 break;
1031 default:
1032 trace_usb_ohci_td_bad_direction(dir);
1033 return 1;
1034 }
1035 if (td.cbp && td.be) {
1036 if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) {
1037 len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff);
1038 } else {
1039 len = (td.be - td.cbp) + 1;
1040 }
1041
1042 pktlen = len;
1043 if (len && dir != OHCI_TD_DIR_IN) {
1044 /* The endpoint may not allow us to transfer it all now */
1045 pktlen = (ed->flags & OHCI_ED_MPS_MASK) >> OHCI_ED_MPS_SHIFT;
1046 if (pktlen > len) {
1047 pktlen = len;
1048 }
1049 if (!completion) {
1050 if (ohci_copy_td(ohci, &td, ohci->usb_buf, pktlen,
1051 DMA_DIRECTION_TO_DEVICE)) {
1052 ohci_die(ohci);
1053 }
1054 }
1055 }
1056 }
1057
1058 flag_r = (td.flags & OHCI_TD_R) != 0;
1059 trace_usb_ohci_td_pkt_hdr(addr, (int64_t)pktlen, (int64_t)len, str,
1060 flag_r, td.cbp, td.be);
1061 ohci_td_pkt("OUT", ohci->usb_buf, pktlen);
1062
1063 if (completion) {
1064 ohci->async_td = 0;
1065 ohci->async_complete = false;
1066 } else {
1067 if (ohci->async_td) {
1068 /* ??? The hardware should allow one active packet per
1069 endpoint. We only allow one active packet per controller.
1070 This should be sufficient as long as devices respond in a
1071 timely manner.
1072 */
1073 trace_usb_ohci_td_too_many_pending();
1074 return 1;
1075 }
1076 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
1077 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
1078 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r,
1079 OHCI_BM(td.flags, TD_DI) == 0);
1080 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, pktlen);
1081 usb_handle_packet(dev, &ohci->usb_packet);
1082 trace_usb_ohci_td_packet_status(ohci->usb_packet.status);
1083
1084 if (ohci->usb_packet.status == USB_RET_ASYNC) {
1085 usb_device_flush_ep_queue(dev, ep);
1086 ohci->async_td = addr;
1087 return 1;
1088 }
1089 }
1090 if (ohci->usb_packet.status == USB_RET_SUCCESS) {
1091 ret = ohci->usb_packet.actual_length;
1092 } else {
1093 ret = ohci->usb_packet.status;
1094 }
1095
1096 if (ret >= 0) {
1097 if (dir == OHCI_TD_DIR_IN) {
1098 if (ohci_copy_td(ohci, &td, ohci->usb_buf, ret,
1099 DMA_DIRECTION_FROM_DEVICE)) {
1100 ohci_die(ohci);
1101 }
1102 ohci_td_pkt("IN", ohci->usb_buf, pktlen);
1103 } else {
1104 ret = pktlen;
1105 }
1106 }
1107
1108 /* Writeback */
1109 if (ret == pktlen || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) {
1110 /* Transmission succeeded. */
1111 if (ret == len) {
1112 td.cbp = 0;
1113 } else {
1114 if ((td.cbp & 0xfff) + ret > 0xfff) {
1115 td.cbp = (td.be & ~0xfff) + ((td.cbp + ret) & 0xfff);
1116 } else {
1117 td.cbp += ret;
1118 }
1119 }
1120 td.flags |= OHCI_TD_T1;
1121 td.flags ^= OHCI_TD_T0;
1122 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_NOERROR);
1123 OHCI_SET_BM(td.flags, TD_EC, 0);
1124
1125 if ((dir != OHCI_TD_DIR_IN) && (ret != len)) {
1126 /* Partial packet transfer: TD not ready to retire yet */
1127 goto exit_no_retire;
1128 }
1129
1130 /* Setting ED_C is part of the TD retirement process */
1131 ed->head &= ~OHCI_ED_C;
1132 if (td.flags & OHCI_TD_T0)
1133 ed->head |= OHCI_ED_C;
1134 } else {
1135 if (ret >= 0) {
1136 trace_usb_ohci_td_underrun();
1137 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN);
1138 } else {
1139 switch (ret) {
1140 case USB_RET_IOERROR:
1141 case USB_RET_NODEV:
1142 trace_usb_ohci_td_dev_error();
1143 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING);
1144 break;
1145 case USB_RET_NAK:
1146 trace_usb_ohci_td_nak();
1147 return 1;
1148 case USB_RET_STALL:
1149 trace_usb_ohci_td_stall();
1150 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_STALL);
1151 break;
1152 case USB_RET_BABBLE:
1153 trace_usb_ohci_td_babble();
1154 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
1155 break;
1156 default:
1157 trace_usb_ohci_td_bad_device_response(ret);
1158 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_UNDEXPETEDPID);
1159 OHCI_SET_BM(td.flags, TD_EC, 3);
1160 break;
1161 }
1162 }
1163 ed->head |= OHCI_ED_H;
1164 }
1165
1166 /* Retire this TD */
1167 ed->head &= ~OHCI_DPTR_MASK;
1168 ed->head |= td.next & OHCI_DPTR_MASK;
1169 td.next = ohci->done;
1170 ohci->done = addr;
1171 i = OHCI_BM(td.flags, TD_DI);
1172 if (i < ohci->done_count)
1173 ohci->done_count = i;
1174 exit_no_retire:
1175 if (ohci_put_td(ohci, addr, &td)) {
1176 ohci_die(ohci);
1177 return 1;
1178 }
1179 return OHCI_BM(td.flags, TD_CC) != OHCI_CC_NOERROR;
1180 }
1181
1182 /* Service an endpoint list. Returns nonzero if active TD were found. */
1183 static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion)
1184 {
1185 struct ohci_ed ed;
1186 uint32_t next_ed;
1187 uint32_t cur;
1188 int active;
1189 uint32_t link_cnt = 0;
1190 active = 0;
1191
1192 if (head == 0)
1193 return 0;
1194
1195 for (cur = head; cur; cur = next_ed) {
1196 if (ohci_read_ed(ohci, cur, &ed)) {
1197 trace_usb_ohci_ed_read_error(cur);
1198 ohci_die(ohci);
1199 return 0;
1200 }
1201
1202 next_ed = ed.next & OHCI_DPTR_MASK;
1203
1204 if (++link_cnt > ED_LINK_LIMIT) {
1205 ohci_die(ohci);
1206 return 0;
1207 }
1208
1209 if ((ed.head & OHCI_ED_H) || (ed.flags & OHCI_ED_K)) {
1210 uint32_t addr;
1211 /* Cancel pending packets for ED that have been paused. */
1212 addr = ed.head & OHCI_DPTR_MASK;
1213 if (ohci->async_td && addr == ohci->async_td) {
1214 usb_cancel_packet(&ohci->usb_packet);
1215 ohci->async_td = 0;
1216 usb_device_ep_stopped(ohci->usb_packet.ep->dev,
1217 ohci->usb_packet.ep);
1218 }
1219 continue;
1220 }
1221
1222 while ((ed.head & OHCI_DPTR_MASK) != ed.tail) {
1223 trace_usb_ohci_ed_pkt(cur, (ed.head & OHCI_ED_H) != 0,
1224 (ed.head & OHCI_ED_C) != 0, ed.head & OHCI_DPTR_MASK,
1225 ed.tail & OHCI_DPTR_MASK, ed.next & OHCI_DPTR_MASK);
1226 trace_usb_ohci_ed_pkt_flags(
1227 OHCI_BM(ed.flags, ED_FA), OHCI_BM(ed.flags, ED_EN),
1228 OHCI_BM(ed.flags, ED_D), (ed.flags & OHCI_ED_S)!= 0,
1229 (ed.flags & OHCI_ED_K) != 0, (ed.flags & OHCI_ED_F) != 0,
1230 OHCI_BM(ed.flags, ED_MPS));
1231
1232 active = 1;
1233
1234 if ((ed.flags & OHCI_ED_F) == 0) {
1235 if (ohci_service_td(ohci, &ed))
1236 break;
1237 } else {
1238 /* Handle isochronous endpoints */
1239 if (ohci_service_iso_td(ohci, &ed, completion))
1240 break;
1241 }
1242 }
1243
1244 if (ohci_put_ed(ohci, cur, &ed)) {
1245 ohci_die(ohci);
1246 return 0;
1247 }
1248 }
1249
1250 return active;
1251 }
1252
1253 /* set a timer for EOF */
1254 static void ohci_eof_timer(OHCIState *ohci)
1255 {
1256 ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1257 timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time);
1258 }
1259 /* Set a timer for EOF and generate a SOF event */
1260 static void ohci_sof(OHCIState *ohci)
1261 {
1262 ohci_eof_timer(ohci);
1263 ohci_set_interrupt(ohci, OHCI_INTR_SF);
1264 }
1265
1266 /* Process Control and Bulk lists. */
1267 static void ohci_process_lists(OHCIState *ohci, int completion)
1268 {
1269 if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) {
1270 if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head) {
1271 trace_usb_ohci_process_lists(ohci->ctrl_head, ohci->ctrl_cur);
1272 }
1273 if (!ohci_service_ed_list(ohci, ohci->ctrl_head, completion)) {
1274 ohci->ctrl_cur = 0;
1275 ohci->status &= ~OHCI_STATUS_CLF;
1276 }
1277 }
1278
1279 if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) {
1280 if (!ohci_service_ed_list(ohci, ohci->bulk_head, completion)) {
1281 ohci->bulk_cur = 0;
1282 ohci->status &= ~OHCI_STATUS_BLF;
1283 }
1284 }
1285 }
1286
1287 /* Do frame processing on frame boundary */
1288 static void ohci_frame_boundary(void *opaque)
1289 {
1290 OHCIState *ohci = opaque;
1291 struct ohci_hcca hcca;
1292
1293 if (ohci_read_hcca(ohci, ohci->hcca, &hcca)) {
1294 trace_usb_ohci_hcca_read_error(ohci->hcca);
1295 ohci_die(ohci);
1296 return;
1297 }
1298
1299 /* Process all the lists at the end of the frame */
1300 if (ohci->ctl & OHCI_CTL_PLE) {
1301 int n;
1302
1303 n = ohci->frame_number & 0x1f;
1304 ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n]), 0);
1305 }
1306
1307 /* Cancel all pending packets if either of the lists has been disabled. */
1308 if (ohci->old_ctl & (~ohci->ctl) & (OHCI_CTL_BLE | OHCI_CTL_CLE)) {
1309 if (ohci->async_td) {
1310 usb_cancel_packet(&ohci->usb_packet);
1311 ohci->async_td = 0;
1312 }
1313 ohci_stop_endpoints(ohci);
1314 }
1315 ohci->old_ctl = ohci->ctl;
1316 ohci_process_lists(ohci, 0);
1317
1318 /* Stop if UnrecoverableError happened or ohci_sof will crash */
1319 if (ohci->intr_status & OHCI_INTR_UE) {
1320 return;
1321 }
1322
1323 /* Frame boundary, so do EOF stuf here */
1324 ohci->frt = ohci->fit;
1325
1326 /* Increment frame number and take care of endianness. */
1327 ohci->frame_number = (ohci->frame_number + 1) & 0xffff;
1328 hcca.frame = cpu_to_le16(ohci->frame_number);
1329
1330 if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) {
1331 if (!ohci->done)
1332 abort();
1333 if (ohci->intr & ohci->intr_status)
1334 ohci->done |= 1;
1335 hcca.done = cpu_to_le32(ohci->done);
1336 ohci->done = 0;
1337 ohci->done_count = 7;
1338 ohci_set_interrupt(ohci, OHCI_INTR_WD);
1339 }
1340
1341 if (ohci->done_count != 7 && ohci->done_count != 0)
1342 ohci->done_count--;
1343
1344 /* Do SOF stuff here */
1345 ohci_sof(ohci);
1346
1347 /* Writeback HCCA */
1348 if (ohci_put_hcca(ohci, ohci->hcca, &hcca)) {
1349 ohci_die(ohci);
1350 }
1351 }
1352
1353 /* Start sending SOF tokens across the USB bus, lists are processed in
1354 * next frame
1355 */
1356 static int ohci_bus_start(OHCIState *ohci)
1357 {
1358 trace_usb_ohci_start(ohci->name);
1359
1360 /* Delay the first SOF event by one frame time as
1361 * linux driver is not ready to receive it and
1362 * can meet some race conditions
1363 */
1364
1365 ohci_eof_timer(ohci);
1366
1367 return 1;
1368 }
1369
1370 /* Stop sending SOF tokens on the bus */
1371 static void ohci_bus_stop(OHCIState *ohci)
1372 {
1373 trace_usb_ohci_stop(ohci->name);
1374 timer_del(ohci->eof_timer);
1375 }
1376
1377 /* Sets a flag in a port status register but only set it if the port is
1378 * connected, if not set ConnectStatusChange flag. If flag is enabled
1379 * return 1.
1380 */
1381 static int ohci_port_set_if_connected(OHCIState *ohci, int i, uint32_t val)
1382 {
1383 int ret = 1;
1384
1385 /* writing a 0 has no effect */
1386 if (val == 0)
1387 return 0;
1388
1389 /* If CurrentConnectStatus is cleared we set
1390 * ConnectStatusChange
1391 */
1392 if (!(ohci->rhport[i].ctrl & OHCI_PORT_CCS)) {
1393 ohci->rhport[i].ctrl |= OHCI_PORT_CSC;
1394 if (ohci->rhstatus & OHCI_RHS_DRWE) {
1395 /* TODO: CSC is a wakeup event */
1396 }
1397 return 0;
1398 }
1399
1400 if (ohci->rhport[i].ctrl & val)
1401 ret = 0;
1402
1403 /* set the bit */
1404 ohci->rhport[i].ctrl |= val;
1405
1406 return ret;
1407 }
1408
1409 /* Set the frame interval - frame interval toggle is manipulated by the hcd only */
1410 static void ohci_set_frame_interval(OHCIState *ohci, uint16_t val)
1411 {
1412 val &= OHCI_FMI_FI;
1413
1414 if (val != ohci->fi) {
1415 trace_usb_ohci_set_frame_interval(ohci->name, ohci->fi, ohci->fi);
1416 }
1417
1418 ohci->fi = val;
1419 }
1420
1421 static void ohci_port_power(OHCIState *ohci, int i, int p)
1422 {
1423 if (p) {
1424 ohci->rhport[i].ctrl |= OHCI_PORT_PPS;
1425 } else {
1426 ohci->rhport[i].ctrl &= ~(OHCI_PORT_PPS|
1427 OHCI_PORT_CCS|
1428 OHCI_PORT_PSS|
1429 OHCI_PORT_PRS);
1430 }
1431 }
1432
1433 /* Set HcControlRegister */
1434 static void ohci_set_ctl(OHCIState *ohci, uint32_t val)
1435 {
1436 uint32_t old_state;
1437 uint32_t new_state;
1438
1439 old_state = ohci->ctl & OHCI_CTL_HCFS;
1440 ohci->ctl = val;
1441 new_state = ohci->ctl & OHCI_CTL_HCFS;
1442
1443 /* no state change */
1444 if (old_state == new_state)
1445 return;
1446
1447 trace_usb_ohci_set_ctl(ohci->name, new_state);
1448 switch (new_state) {
1449 case OHCI_USB_OPERATIONAL:
1450 ohci_bus_start(ohci);
1451 break;
1452 case OHCI_USB_SUSPEND:
1453 ohci_bus_stop(ohci);
1454 /* clear pending SF otherwise linux driver loops in ohci_irq() */
1455 ohci->intr_status &= ~OHCI_INTR_SF;
1456 ohci_intr_update(ohci);
1457 break;
1458 case OHCI_USB_RESUME:
1459 trace_usb_ohci_resume(ohci->name);
1460 break;
1461 case OHCI_USB_RESET:
1462 ohci_roothub_reset(ohci);
1463 break;
1464 }
1465 }
1466
1467 static uint32_t ohci_get_frame_remaining(OHCIState *ohci)
1468 {
1469 uint16_t fr;
1470 int64_t tks;
1471
1472 if ((ohci->ctl & OHCI_CTL_HCFS) != OHCI_USB_OPERATIONAL)
1473 return (ohci->frt << 31);
1474
1475 /* Being in USB operational state guarnatees sof_time was
1476 * set already.
1477 */
1478 tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time;
1479
1480 /* avoid muldiv if possible */
1481 if (tks >= usb_frame_time)
1482 return (ohci->frt << 31);
1483
1484 tks = tks / usb_bit_time;
1485 fr = (uint16_t)(ohci->fi - tks);
1486
1487 return (ohci->frt << 31) | fr;
1488 }
1489
1490
1491 /* Set root hub status */
1492 static void ohci_set_hub_status(OHCIState *ohci, uint32_t val)
1493 {
1494 uint32_t old_state;
1495
1496 old_state = ohci->rhstatus;
1497
1498 /* write 1 to clear OCIC */
1499 if (val & OHCI_RHS_OCIC)
1500 ohci->rhstatus &= ~OHCI_RHS_OCIC;
1501
1502 if (val & OHCI_RHS_LPS) {
1503 int i;
1504
1505 for (i = 0; i < ohci->num_ports; i++)
1506 ohci_port_power(ohci, i, 0);
1507 trace_usb_ohci_hub_power_down();
1508 }
1509
1510 if (val & OHCI_RHS_LPSC) {
1511 int i;
1512
1513 for (i = 0; i < ohci->num_ports; i++)
1514 ohci_port_power(ohci, i, 1);
1515 trace_usb_ohci_hub_power_up();
1516 }
1517
1518 if (val & OHCI_RHS_DRWE)
1519 ohci->rhstatus |= OHCI_RHS_DRWE;
1520
1521 if (val & OHCI_RHS_CRWE)
1522 ohci->rhstatus &= ~OHCI_RHS_DRWE;
1523
1524 if (old_state != ohci->rhstatus)
1525 ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
1526 }
1527
1528 /* Set root hub port status */
1529 static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val)
1530 {
1531 uint32_t old_state;
1532 OHCIPort *port;
1533
1534 port = &ohci->rhport[portnum];
1535 old_state = port->ctrl;
1536
1537 /* Write to clear CSC, PESC, PSSC, OCIC, PRSC */
1538 if (val & OHCI_PORT_WTC)
1539 port->ctrl &= ~(val & OHCI_PORT_WTC);
1540
1541 if (val & OHCI_PORT_CCS)
1542 port->ctrl &= ~OHCI_PORT_PES;
1543
1544 ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PES);
1545
1546 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PSS)) {
1547 trace_usb_ohci_port_suspend(portnum);
1548 }
1549
1550 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PRS)) {
1551 trace_usb_ohci_port_reset(portnum);
1552 usb_device_reset(port->port.dev);
1553 port->ctrl &= ~OHCI_PORT_PRS;
1554 /* ??? Should this also set OHCI_PORT_PESC. */
1555 port->ctrl |= OHCI_PORT_PES | OHCI_PORT_PRSC;
1556 }
1557
1558 /* Invert order here to ensure in ambiguous case, device is
1559 * powered up...
1560 */
1561 if (val & OHCI_PORT_LSDA)
1562 ohci_port_power(ohci, portnum, 0);
1563 if (val & OHCI_PORT_PPS)
1564 ohci_port_power(ohci, portnum, 1);
1565
1566 if (old_state != port->ctrl)
1567 ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
1568 }
1569
1570 static uint64_t ohci_mem_read(void *opaque,
1571 hwaddr addr,
1572 unsigned size)
1573 {
1574 OHCIState *ohci = opaque;
1575 uint32_t retval;
1576
1577 /* Only aligned reads are allowed on OHCI */
1578 if (addr & 3) {
1579 trace_usb_ohci_mem_read_unaligned(addr);
1580 return 0xffffffff;
1581 } else if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
1582 /* HcRhPortStatus */
1583 retval = ohci->rhport[(addr - 0x54) >> 2].ctrl | OHCI_PORT_PPS;
1584 } else {
1585 switch (addr >> 2) {
1586 case 0: /* HcRevision */
1587 retval = 0x10;
1588 break;
1589
1590 case 1: /* HcControl */
1591 retval = ohci->ctl;
1592 break;
1593
1594 case 2: /* HcCommandStatus */
1595 retval = ohci->status;
1596 break;
1597
1598 case 3: /* HcInterruptStatus */
1599 retval = ohci->intr_status;
1600 break;
1601
1602 case 4: /* HcInterruptEnable */
1603 case 5: /* HcInterruptDisable */
1604 retval = ohci->intr;
1605 break;
1606
1607 case 6: /* HcHCCA */
1608 retval = ohci->hcca;
1609 break;
1610
1611 case 7: /* HcPeriodCurrentED */
1612 retval = ohci->per_cur;
1613 break;
1614
1615 case 8: /* HcControlHeadED */
1616 retval = ohci->ctrl_head;
1617 break;
1618
1619 case 9: /* HcControlCurrentED */
1620 retval = ohci->ctrl_cur;
1621 break;
1622
1623 case 10: /* HcBulkHeadED */
1624 retval = ohci->bulk_head;
1625 break;
1626
1627 case 11: /* HcBulkCurrentED */
1628 retval = ohci->bulk_cur;
1629 break;
1630
1631 case 12: /* HcDoneHead */
1632 retval = ohci->done;
1633 break;
1634
1635 case 13: /* HcFmInterretval */
1636 retval = (ohci->fit << 31) | (ohci->fsmps << 16) | (ohci->fi);
1637 break;
1638
1639 case 14: /* HcFmRemaining */
1640 retval = ohci_get_frame_remaining(ohci);
1641 break;
1642
1643 case 15: /* HcFmNumber */
1644 retval = ohci->frame_number;
1645 break;
1646
1647 case 16: /* HcPeriodicStart */
1648 retval = ohci->pstart;
1649 break;
1650
1651 case 17: /* HcLSThreshold */
1652 retval = ohci->lst;
1653 break;
1654
1655 case 18: /* HcRhDescriptorA */
1656 retval = ohci->rhdesc_a;
1657 break;
1658
1659 case 19: /* HcRhDescriptorB */
1660 retval = ohci->rhdesc_b;
1661 break;
1662
1663 case 20: /* HcRhStatus */
1664 retval = ohci->rhstatus;
1665 break;
1666
1667 /* PXA27x specific registers */
1668 case 24: /* HcStatus */
1669 retval = ohci->hstatus & ohci->hmask;
1670 break;
1671
1672 case 25: /* HcHReset */
1673 retval = ohci->hreset;
1674 break;
1675
1676 case 26: /* HcHInterruptEnable */
1677 retval = ohci->hmask;
1678 break;
1679
1680 case 27: /* HcHInterruptTest */
1681 retval = ohci->htest;
1682 break;
1683
1684 default:
1685 trace_usb_ohci_mem_read_bad_offset(addr);
1686 retval = 0xffffffff;
1687 }
1688 }
1689
1690 return retval;
1691 }
1692
1693 static void ohci_mem_write(void *opaque,
1694 hwaddr addr,
1695 uint64_t val,
1696 unsigned size)
1697 {
1698 OHCIState *ohci = opaque;
1699
1700 /* Only aligned reads are allowed on OHCI */
1701 if (addr & 3) {
1702 trace_usb_ohci_mem_write_unaligned(addr);
1703 return;
1704 }
1705
1706 if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
1707 /* HcRhPortStatus */
1708 ohci_port_set_status(ohci, (addr - 0x54) >> 2, val);
1709 return;
1710 }
1711
1712 switch (addr >> 2) {
1713 case 1: /* HcControl */
1714 ohci_set_ctl(ohci, val);
1715 break;
1716
1717 case 2: /* HcCommandStatus */
1718 /* SOC is read-only */
1719 val = (val & ~OHCI_STATUS_SOC);
1720
1721 /* Bits written as '0' remain unchanged in the register */
1722 ohci->status |= val;
1723
1724 if (ohci->status & OHCI_STATUS_HCR)
1725 ohci_soft_reset(ohci);
1726 break;
1727
1728 case 3: /* HcInterruptStatus */
1729 ohci->intr_status &= ~val;
1730 ohci_intr_update(ohci);
1731 break;
1732
1733 case 4: /* HcInterruptEnable */
1734 ohci->intr |= val;
1735 ohci_intr_update(ohci);
1736 break;
1737
1738 case 5: /* HcInterruptDisable */
1739 ohci->intr &= ~val;
1740 ohci_intr_update(ohci);
1741 break;
1742
1743 case 6: /* HcHCCA */
1744 ohci->hcca = val & OHCI_HCCA_MASK;
1745 break;
1746
1747 case 7: /* HcPeriodCurrentED */
1748 /* Ignore writes to this read-only register, Linux does them */
1749 break;
1750
1751 case 8: /* HcControlHeadED */
1752 ohci->ctrl_head = val & OHCI_EDPTR_MASK;
1753 break;
1754
1755 case 9: /* HcControlCurrentED */
1756 ohci->ctrl_cur = val & OHCI_EDPTR_MASK;
1757 break;
1758
1759 case 10: /* HcBulkHeadED */
1760 ohci->bulk_head = val & OHCI_EDPTR_MASK;
1761 break;
1762
1763 case 11: /* HcBulkCurrentED */
1764 ohci->bulk_cur = val & OHCI_EDPTR_MASK;
1765 break;
1766
1767 case 13: /* HcFmInterval */
1768 ohci->fsmps = (val & OHCI_FMI_FSMPS) >> 16;
1769 ohci->fit = (val & OHCI_FMI_FIT) >> 31;
1770 ohci_set_frame_interval(ohci, val);
1771 break;
1772
1773 case 15: /* HcFmNumber */
1774 break;
1775
1776 case 16: /* HcPeriodicStart */
1777 ohci->pstart = val & 0xffff;
1778 break;
1779
1780 case 17: /* HcLSThreshold */
1781 ohci->lst = val & 0xffff;
1782 break;
1783
1784 case 18: /* HcRhDescriptorA */
1785 ohci->rhdesc_a &= ~OHCI_RHA_RW_MASK;
1786 ohci->rhdesc_a |= val & OHCI_RHA_RW_MASK;
1787 break;
1788
1789 case 19: /* HcRhDescriptorB */
1790 break;
1791
1792 case 20: /* HcRhStatus */
1793 ohci_set_hub_status(ohci, val);
1794 break;
1795
1796 /* PXA27x specific registers */
1797 case 24: /* HcStatus */
1798 ohci->hstatus &= ~(val & ohci->hmask);
1799 break;
1800
1801 case 25: /* HcHReset */
1802 ohci->hreset = val & ~OHCI_HRESET_FSBIR;
1803 if (val & OHCI_HRESET_FSBIR)
1804 ohci_hard_reset(ohci);
1805 break;
1806
1807 case 26: /* HcHInterruptEnable */
1808 ohci->hmask = val;
1809 break;
1810
1811 case 27: /* HcHInterruptTest */
1812 ohci->htest = val;
1813 break;
1814
1815 default:
1816 trace_usb_ohci_mem_write_bad_offset(addr);
1817 break;
1818 }
1819 }
1820
1821 static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev)
1822 {
1823 if (ohci->async_td &&
1824 usb_packet_is_inflight(&ohci->usb_packet) &&
1825 ohci->usb_packet.ep->dev == dev) {
1826 usb_cancel_packet(&ohci->usb_packet);
1827 ohci->async_td = 0;
1828 }
1829 }
1830
1831 static const MemoryRegionOps ohci_mem_ops = {
1832 .read = ohci_mem_read,
1833 .write = ohci_mem_write,
1834 .endianness = DEVICE_LITTLE_ENDIAN,
1835 };
1836
1837 static USBPortOps ohci_port_ops = {
1838 .attach = ohci_attach,
1839 .detach = ohci_detach,
1840 .child_detach = ohci_child_detach,
1841 .wakeup = ohci_wakeup,
1842 .complete = ohci_async_complete_packet,
1843 };
1844
1845 static USBBusOps ohci_bus_ops = {
1846 };
1847
1848 static void usb_ohci_init(OHCIState *ohci, DeviceState *dev,
1849 int num_ports, dma_addr_t localmem_base,
1850 char *masterbus, uint32_t firstport,
1851 AddressSpace *as, Error **errp)
1852 {
1853 Error *err = NULL;
1854 int i;
1855
1856 ohci->as = as;
1857
1858 if (num_ports > OHCI_MAX_PORTS) {
1859 error_setg(errp, "OHCI num-ports=%d is too big (limit is %d ports)",
1860 num_ports, OHCI_MAX_PORTS);
1861 return;
1862 }
1863
1864 if (usb_frame_time == 0) {
1865 #ifdef OHCI_TIME_WARP
1866 usb_frame_time = NANOSECONDS_PER_SECOND;
1867 usb_bit_time = NANOSECONDS_PER_SECOND / (USB_HZ / 1000);
1868 #else
1869 usb_frame_time = NANOSECONDS_PER_SECOND / 1000;
1870 if (NANOSECONDS_PER_SECOND >= USB_HZ) {
1871 usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ;
1872 } else {
1873 usb_bit_time = 1;
1874 }
1875 #endif
1876 trace_usb_ohci_init_time(usb_frame_time, usb_bit_time);
1877 }
1878
1879 ohci->num_ports = num_ports;
1880 if (masterbus) {
1881 USBPort *ports[OHCI_MAX_PORTS];
1882 for(i = 0; i < num_ports; i++) {
1883 ports[i] = &ohci->rhport[i].port;
1884 }
1885 usb_register_companion(masterbus, ports, num_ports,
1886 firstport, ohci, &ohci_port_ops,
1887 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL,
1888 &err);
1889 if (err) {
1890 error_propagate(errp, err);
1891 return;
1892 }
1893 } else {
1894 usb_bus_new(&ohci->bus, sizeof(ohci->bus), &ohci_bus_ops, dev);
1895 for (i = 0; i < num_ports; i++) {
1896 usb_register_port(&ohci->bus, &ohci->rhport[i].port,
1897 ohci, i, &ohci_port_ops,
1898 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
1899 }
1900 }
1901
1902 memory_region_init_io(&ohci->mem, OBJECT(dev), &ohci_mem_ops,
1903 ohci, "ohci", 256);
1904 ohci->localmem_base = localmem_base;
1905
1906 ohci->name = object_get_typename(OBJECT(dev));
1907 usb_packet_init(&ohci->usb_packet);
1908
1909 ohci->async_td = 0;
1910
1911 ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
1912 ohci_frame_boundary, ohci);
1913 }
1914
1915 #define TYPE_PCI_OHCI "pci-ohci"
1916 #define PCI_OHCI(obj) OBJECT_CHECK(OHCIPCIState, (obj), TYPE_PCI_OHCI)
1917
1918 typedef struct {
1919 /*< private >*/
1920 PCIDevice parent_obj;
1921 /*< public >*/
1922
1923 OHCIState state;
1924 char *masterbus;
1925 uint32_t num_ports;
1926 uint32_t firstport;
1927 } OHCIPCIState;
1928
1929 /** A typical O/EHCI will stop operating, set itself into error state
1930 * (which can be queried by MMIO) and will set PERR in its config
1931 * space to signal that it got an error
1932 */
1933 static void ohci_die(OHCIState *ohci)
1934 {
1935 OHCIPCIState *dev = container_of(ohci, OHCIPCIState, state);
1936
1937 trace_usb_ohci_die();
1938
1939 ohci_set_interrupt(ohci, OHCI_INTR_UE);
1940 ohci_bus_stop(ohci);
1941 pci_set_word(dev->parent_obj.config + PCI_STATUS,
1942 PCI_STATUS_DETECTED_PARITY);
1943 }
1944
1945 static void usb_ohci_realize_pci(PCIDevice *dev, Error **errp)
1946 {
1947 Error *err = NULL;
1948 OHCIPCIState *ohci = PCI_OHCI(dev);
1949
1950 dev->config[PCI_CLASS_PROG] = 0x10; /* OHCI */
1951 dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */
1952
1953 usb_ohci_init(&ohci->state, DEVICE(dev), ohci->num_ports, 0,
1954 ohci->masterbus, ohci->firstport,
1955 pci_get_address_space(dev), &err);
1956 if (err) {
1957 error_propagate(errp, err);
1958 return;
1959 }
1960
1961 ohci->state.irq = pci_allocate_irq(dev);
1962 pci_register_bar(dev, 0, 0, &ohci->state.mem);
1963 }
1964
1965 static void usb_ohci_exit(PCIDevice *dev)
1966 {
1967 OHCIPCIState *ohci = PCI_OHCI(dev);
1968 OHCIState *s = &ohci->state;
1969
1970 trace_usb_ohci_exit(s->name);
1971 ohci_bus_stop(s);
1972
1973 if (s->async_td) {
1974 usb_cancel_packet(&s->usb_packet);
1975 s->async_td = 0;
1976 }
1977 ohci_stop_endpoints(s);
1978
1979 if (!ohci->masterbus) {
1980 usb_bus_release(&s->bus);
1981 }
1982
1983 timer_del(s->eof_timer);
1984 timer_free(s->eof_timer);
1985 }
1986
1987 static void usb_ohci_reset_pci(DeviceState *d)
1988 {
1989 PCIDevice *dev = PCI_DEVICE(d);
1990 OHCIPCIState *ohci = PCI_OHCI(dev);
1991 OHCIState *s = &ohci->state;
1992
1993 ohci_hard_reset(s);
1994 }
1995
1996 #define TYPE_SYSBUS_OHCI "sysbus-ohci"
1997 #define SYSBUS_OHCI(obj) OBJECT_CHECK(OHCISysBusState, (obj), TYPE_SYSBUS_OHCI)
1998
1999 typedef struct {
2000 /*< private >*/
2001 SysBusDevice parent_obj;
2002 /*< public >*/
2003
2004 OHCIState ohci;
2005 uint32_t num_ports;
2006 dma_addr_t dma_offset;
2007 } OHCISysBusState;
2008
2009 static void ohci_realize_pxa(DeviceState *dev, Error **errp)
2010 {
2011 OHCISysBusState *s = SYSBUS_OHCI(dev);
2012 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
2013
2014 /* Cannot fail as we pass NULL for masterbus */
2015 usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset, NULL, 0,
2016 &address_space_memory, &error_abort);
2017 sysbus_init_irq(sbd, &s->ohci.irq);
2018 sysbus_init_mmio(sbd, &s->ohci.mem);
2019 }
2020
2021 static void usb_ohci_reset_sysbus(DeviceState *dev)
2022 {
2023 OHCISysBusState *s = SYSBUS_OHCI(dev);
2024 OHCIState *ohci = &s->ohci;
2025
2026 ohci_hard_reset(ohci);
2027 }
2028
2029 static Property ohci_pci_properties[] = {
2030 DEFINE_PROP_STRING("masterbus", OHCIPCIState, masterbus),
2031 DEFINE_PROP_UINT32("num-ports", OHCIPCIState, num_ports, 3),
2032 DEFINE_PROP_UINT32("firstport", OHCIPCIState, firstport, 0),
2033 DEFINE_PROP_END_OF_LIST(),
2034 };
2035
2036 static const VMStateDescription vmstate_ohci_state_port = {
2037 .name = "ohci-core/port",
2038 .version_id = 1,
2039 .minimum_version_id = 1,
2040 .fields = (VMStateField[]) {
2041 VMSTATE_UINT32(ctrl, OHCIPort),
2042 VMSTATE_END_OF_LIST()
2043 },
2044 };
2045
2046 static bool ohci_eof_timer_needed(void *opaque)
2047 {
2048 OHCIState *ohci = opaque;
2049
2050 return timer_pending(ohci->eof_timer);
2051 }
2052
2053 static const VMStateDescription vmstate_ohci_eof_timer = {
2054 .name = "ohci-core/eof-timer",
2055 .version_id = 1,
2056 .minimum_version_id = 1,
2057 .needed = ohci_eof_timer_needed,
2058 .fields = (VMStateField[]) {
2059 VMSTATE_TIMER_PTR(eof_timer, OHCIState),
2060 VMSTATE_END_OF_LIST()
2061 },
2062 };
2063
2064 static const VMStateDescription vmstate_ohci_state = {
2065 .name = "ohci-core",
2066 .version_id = 1,
2067 .minimum_version_id = 1,
2068 .fields = (VMStateField[]) {
2069 VMSTATE_INT64(sof_time, OHCIState),
2070 VMSTATE_UINT32(ctl, OHCIState),
2071 VMSTATE_UINT32(status, OHCIState),
2072 VMSTATE_UINT32(intr_status, OHCIState),
2073 VMSTATE_UINT32(intr, OHCIState),
2074 VMSTATE_UINT32(hcca, OHCIState),
2075 VMSTATE_UINT32(ctrl_head, OHCIState),
2076 VMSTATE_UINT32(ctrl_cur, OHCIState),
2077 VMSTATE_UINT32(bulk_head, OHCIState),
2078 VMSTATE_UINT32(bulk_cur, OHCIState),
2079 VMSTATE_UINT32(per_cur, OHCIState),
2080 VMSTATE_UINT32(done, OHCIState),
2081 VMSTATE_INT32(done_count, OHCIState),
2082 VMSTATE_UINT16(fsmps, OHCIState),
2083 VMSTATE_UINT8(fit, OHCIState),
2084 VMSTATE_UINT16(fi, OHCIState),
2085 VMSTATE_UINT8(frt, OHCIState),
2086 VMSTATE_UINT16(frame_number, OHCIState),
2087 VMSTATE_UINT16(padding, OHCIState),
2088 VMSTATE_UINT32(pstart, OHCIState),
2089 VMSTATE_UINT32(lst, OHCIState),
2090 VMSTATE_UINT32(rhdesc_a, OHCIState),
2091 VMSTATE_UINT32(rhdesc_b, OHCIState),
2092 VMSTATE_UINT32(rhstatus, OHCIState),
2093 VMSTATE_STRUCT_ARRAY(rhport, OHCIState, OHCI_MAX_PORTS, 0,
2094 vmstate_ohci_state_port, OHCIPort),
2095 VMSTATE_UINT32(hstatus, OHCIState),
2096 VMSTATE_UINT32(hmask, OHCIState),
2097 VMSTATE_UINT32(hreset, OHCIState),
2098 VMSTATE_UINT32(htest, OHCIState),
2099 VMSTATE_UINT32(old_ctl, OHCIState),
2100 VMSTATE_UINT8_ARRAY(usb_buf, OHCIState, 8192),
2101 VMSTATE_UINT32(async_td, OHCIState),
2102 VMSTATE_BOOL(async_complete, OHCIState),
2103 VMSTATE_END_OF_LIST()
2104 },
2105 .subsections = (const VMStateDescription*[]) {
2106 &vmstate_ohci_eof_timer,
2107 NULL
2108 }
2109 };
2110
2111 static const VMStateDescription vmstate_ohci = {
2112 .name = "ohci",
2113 .version_id = 1,
2114 .minimum_version_id = 1,
2115 .fields = (VMStateField[]) {
2116 VMSTATE_PCI_DEVICE(parent_obj, OHCIPCIState),
2117 VMSTATE_STRUCT(state, OHCIPCIState, 1, vmstate_ohci_state, OHCIState),
2118 VMSTATE_END_OF_LIST()
2119 }
2120 };
2121
2122 static void ohci_pci_class_init(ObjectClass *klass, void *data)
2123 {
2124 DeviceClass *dc = DEVICE_CLASS(klass);
2125 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2126
2127 k->realize = usb_ohci_realize_pci;
2128 k->exit = usb_ohci_exit;
2129 k->vendor_id = PCI_VENDOR_ID_APPLE;
2130 k->device_id = PCI_DEVICE_ID_APPLE_IPID_USB;
2131 k->class_id = PCI_CLASS_SERIAL_USB;
2132 set_bit(DEVICE_CATEGORY_USB, dc->categories);
2133 dc->desc = "Apple USB Controller";
2134 dc->props = ohci_pci_properties;
2135 dc->hotpluggable = false;
2136 dc->vmsd = &vmstate_ohci;
2137 dc->reset = usb_ohci_reset_pci;
2138 }
2139
2140 static const TypeInfo ohci_pci_info = {
2141 .name = TYPE_PCI_OHCI,
2142 .parent = TYPE_PCI_DEVICE,
2143 .instance_size = sizeof(OHCIPCIState),
2144 .class_init = ohci_pci_class_init,
2145 };
2146
2147 static Property ohci_sysbus_properties[] = {
2148 DEFINE_PROP_UINT32("num-ports", OHCISysBusState, num_ports, 3),
2149 DEFINE_PROP_DMAADDR("dma-offset", OHCISysBusState, dma_offset, 0),
2150 DEFINE_PROP_END_OF_LIST(),
2151 };
2152
2153 static void ohci_sysbus_class_init(ObjectClass *klass, void *data)
2154 {
2155 DeviceClass *dc = DEVICE_CLASS(klass);
2156
2157 dc->realize = ohci_realize_pxa;
2158 set_bit(DEVICE_CATEGORY_USB, dc->categories);
2159 dc->desc = "OHCI USB Controller";
2160 dc->props = ohci_sysbus_properties;
2161 dc->reset = usb_ohci_reset_sysbus;
2162 }
2163
2164 static const TypeInfo ohci_sysbus_info = {
2165 .name = TYPE_SYSBUS_OHCI,
2166 .parent = TYPE_SYS_BUS_DEVICE,
2167 .instance_size = sizeof(OHCISysBusState),
2168 .class_init = ohci_sysbus_class_init,
2169 };
2170
2171 static void ohci_register_types(void)
2172 {
2173 type_register_static(&ohci_pci_info);
2174 type_register_static(&ohci_sysbus_info);
2175 }
2176
2177 type_init(ohci_register_types)
AR7 emulation for QEMU