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[qemu.git] / hw / usb-musb.c
1 /*
2 * "Inventra" High-speed Dual-Role Controller (MUSB-HDRC), Mentor Graphics,
3 * USB2.0 OTG compliant core used in various chips.
4 *
5 * Copyright (C) 2008 Nokia Corporation
6 * Written by Andrzej Zaborowski <andrew@openedhand.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 or
11 * (at your option) version 3 of the License.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
20 *
21 * Only host-mode and non-DMA accesses are currently supported.
22 */
23 #include "qemu-common.h"
24 #include "qemu-timer.h"
25 #include "usb.h"
26 #include "irq.h"
27 #include "hw.h"
28
29 /* Common USB registers */
30 #define MUSB_HDRC_FADDR 0x00 /* 8-bit */
31 #define MUSB_HDRC_POWER 0x01 /* 8-bit */
32
33 #define MUSB_HDRC_INTRTX 0x02 /* 16-bit */
34 #define MUSB_HDRC_INTRRX 0x04
35 #define MUSB_HDRC_INTRTXE 0x06
36 #define MUSB_HDRC_INTRRXE 0x08
37 #define MUSB_HDRC_INTRUSB 0x0a /* 8 bit */
38 #define MUSB_HDRC_INTRUSBE 0x0b /* 8 bit */
39 #define MUSB_HDRC_FRAME 0x0c /* 16-bit */
40 #define MUSB_HDRC_INDEX 0x0e /* 8 bit */
41 #define MUSB_HDRC_TESTMODE 0x0f /* 8 bit */
42
43 /* Per-EP registers in indexed mode */
44 #define MUSB_HDRC_EP_IDX 0x10 /* 8-bit */
45
46 /* EP FIFOs */
47 #define MUSB_HDRC_FIFO 0x20
48
49 /* Additional Control Registers */
50 #define MUSB_HDRC_DEVCTL 0x60 /* 8 bit */
51
52 /* These are indexed */
53 #define MUSB_HDRC_TXFIFOSZ 0x62 /* 8 bit (see masks) */
54 #define MUSB_HDRC_RXFIFOSZ 0x63 /* 8 bit (see masks) */
55 #define MUSB_HDRC_TXFIFOADDR 0x64 /* 16 bit offset shifted right 3 */
56 #define MUSB_HDRC_RXFIFOADDR 0x66 /* 16 bit offset shifted right 3 */
57
58 /* Some more registers */
59 #define MUSB_HDRC_VCTRL 0x68 /* 8 bit */
60 #define MUSB_HDRC_HWVERS 0x6c /* 8 bit */
61
62 /* Added in HDRC 1.9(?) & MHDRC 1.4 */
63 /* ULPI pass-through */
64 #define MUSB_HDRC_ULPI_VBUSCTL 0x70
65 #define MUSB_HDRC_ULPI_REGDATA 0x74
66 #define MUSB_HDRC_ULPI_REGADDR 0x75
67 #define MUSB_HDRC_ULPI_REGCTL 0x76
68
69 /* Extended config & PHY control */
70 #define MUSB_HDRC_ENDCOUNT 0x78 /* 8 bit */
71 #define MUSB_HDRC_DMARAMCFG 0x79 /* 8 bit */
72 #define MUSB_HDRC_PHYWAIT 0x7a /* 8 bit */
73 #define MUSB_HDRC_PHYVPLEN 0x7b /* 8 bit */
74 #define MUSB_HDRC_HS_EOF1 0x7c /* 8 bit, units of 546.1 us */
75 #define MUSB_HDRC_FS_EOF1 0x7d /* 8 bit, units of 533.3 ns */
76 #define MUSB_HDRC_LS_EOF1 0x7e /* 8 bit, units of 1.067 us */
77
78 /* Per-EP BUSCTL registers */
79 #define MUSB_HDRC_BUSCTL 0x80
80
81 /* Per-EP registers in flat mode */
82 #define MUSB_HDRC_EP 0x100
83
84 /* offsets to registers in flat model */
85 #define MUSB_HDRC_TXMAXP 0x00 /* 16 bit apparently */
86 #define MUSB_HDRC_TXCSR 0x02 /* 16 bit apparently */
87 #define MUSB_HDRC_CSR0 MUSB_HDRC_TXCSR /* re-used for EP0 */
88 #define MUSB_HDRC_RXMAXP 0x04 /* 16 bit apparently */
89 #define MUSB_HDRC_RXCSR 0x06 /* 16 bit apparently */
90 #define MUSB_HDRC_RXCOUNT 0x08 /* 16 bit apparently */
91 #define MUSB_HDRC_COUNT0 MUSB_HDRC_RXCOUNT /* re-used for EP0 */
92 #define MUSB_HDRC_TXTYPE 0x0a /* 8 bit apparently */
93 #define MUSB_HDRC_TYPE0 MUSB_HDRC_TXTYPE /* re-used for EP0 */
94 #define MUSB_HDRC_TXINTERVAL 0x0b /* 8 bit apparently */
95 #define MUSB_HDRC_NAKLIMIT0 MUSB_HDRC_TXINTERVAL /* re-used for EP0 */
96 #define MUSB_HDRC_RXTYPE 0x0c /* 8 bit apparently */
97 #define MUSB_HDRC_RXINTERVAL 0x0d /* 8 bit apparently */
98 #define MUSB_HDRC_FIFOSIZE 0x0f /* 8 bit apparently */
99 #define MUSB_HDRC_CONFIGDATA MGC_O_HDRC_FIFOSIZE /* re-used for EP0 */
100
101 /* "Bus control" registers */
102 #define MUSB_HDRC_TXFUNCADDR 0x00
103 #define MUSB_HDRC_TXHUBADDR 0x02
104 #define MUSB_HDRC_TXHUBPORT 0x03
105
106 #define MUSB_HDRC_RXFUNCADDR 0x04
107 #define MUSB_HDRC_RXHUBADDR 0x06
108 #define MUSB_HDRC_RXHUBPORT 0x07
109
110 /*
111 * MUSBHDRC Register bit masks
112 */
113
114 /* POWER */
115 #define MGC_M_POWER_ISOUPDATE 0x80
116 #define MGC_M_POWER_SOFTCONN 0x40
117 #define MGC_M_POWER_HSENAB 0x20
118 #define MGC_M_POWER_HSMODE 0x10
119 #define MGC_M_POWER_RESET 0x08
120 #define MGC_M_POWER_RESUME 0x04
121 #define MGC_M_POWER_SUSPENDM 0x02
122 #define MGC_M_POWER_ENSUSPEND 0x01
123
124 /* INTRUSB */
125 #define MGC_M_INTR_SUSPEND 0x01
126 #define MGC_M_INTR_RESUME 0x02
127 #define MGC_M_INTR_RESET 0x04
128 #define MGC_M_INTR_BABBLE 0x04
129 #define MGC_M_INTR_SOF 0x08
130 #define MGC_M_INTR_CONNECT 0x10
131 #define MGC_M_INTR_DISCONNECT 0x20
132 #define MGC_M_INTR_SESSREQ 0x40
133 #define MGC_M_INTR_VBUSERROR 0x80 /* FOR SESSION END */
134 #define MGC_M_INTR_EP0 0x01 /* FOR EP0 INTERRUPT */
135
136 /* DEVCTL */
137 #define MGC_M_DEVCTL_BDEVICE 0x80
138 #define MGC_M_DEVCTL_FSDEV 0x40
139 #define MGC_M_DEVCTL_LSDEV 0x20
140 #define MGC_M_DEVCTL_VBUS 0x18
141 #define MGC_S_DEVCTL_VBUS 3
142 #define MGC_M_DEVCTL_HM 0x04
143 #define MGC_M_DEVCTL_HR 0x02
144 #define MGC_M_DEVCTL_SESSION 0x01
145
146 /* TESTMODE */
147 #define MGC_M_TEST_FORCE_HOST 0x80
148 #define MGC_M_TEST_FIFO_ACCESS 0x40
149 #define MGC_M_TEST_FORCE_FS 0x20
150 #define MGC_M_TEST_FORCE_HS 0x10
151 #define MGC_M_TEST_PACKET 0x08
152 #define MGC_M_TEST_K 0x04
153 #define MGC_M_TEST_J 0x02
154 #define MGC_M_TEST_SE0_NAK 0x01
155
156 /* CSR0 */
157 #define MGC_M_CSR0_FLUSHFIFO 0x0100
158 #define MGC_M_CSR0_TXPKTRDY 0x0002
159 #define MGC_M_CSR0_RXPKTRDY 0x0001
160
161 /* CSR0 in Peripheral mode */
162 #define MGC_M_CSR0_P_SVDSETUPEND 0x0080
163 #define MGC_M_CSR0_P_SVDRXPKTRDY 0x0040
164 #define MGC_M_CSR0_P_SENDSTALL 0x0020
165 #define MGC_M_CSR0_P_SETUPEND 0x0010
166 #define MGC_M_CSR0_P_DATAEND 0x0008
167 #define MGC_M_CSR0_P_SENTSTALL 0x0004
168
169 /* CSR0 in Host mode */
170 #define MGC_M_CSR0_H_NO_PING 0x0800
171 #define MGC_M_CSR0_H_WR_DATATOGGLE 0x0400 /* set to allow setting: */
172 #define MGC_M_CSR0_H_DATATOGGLE 0x0200 /* data toggle control */
173 #define MGC_M_CSR0_H_NAKTIMEOUT 0x0080
174 #define MGC_M_CSR0_H_STATUSPKT 0x0040
175 #define MGC_M_CSR0_H_REQPKT 0x0020
176 #define MGC_M_CSR0_H_ERROR 0x0010
177 #define MGC_M_CSR0_H_SETUPPKT 0x0008
178 #define MGC_M_CSR0_H_RXSTALL 0x0004
179
180 /* CONFIGDATA */
181 #define MGC_M_CONFIGDATA_MPRXE 0x80 /* auto bulk pkt combining */
182 #define MGC_M_CONFIGDATA_MPTXE 0x40 /* auto bulk pkt splitting */
183 #define MGC_M_CONFIGDATA_BIGENDIAN 0x20
184 #define MGC_M_CONFIGDATA_HBRXE 0x10 /* HB-ISO for RX */
185 #define MGC_M_CONFIGDATA_HBTXE 0x08 /* HB-ISO for TX */
186 #define MGC_M_CONFIGDATA_DYNFIFO 0x04 /* dynamic FIFO sizing */
187 #define MGC_M_CONFIGDATA_SOFTCONE 0x02 /* SoftConnect */
188 #define MGC_M_CONFIGDATA_UTMIDW 0x01 /* Width, 0 => 8b, 1 => 16b */
189
190 /* TXCSR in Peripheral and Host mode */
191 #define MGC_M_TXCSR_AUTOSET 0x8000
192 #define MGC_M_TXCSR_ISO 0x4000
193 #define MGC_M_TXCSR_MODE 0x2000
194 #define MGC_M_TXCSR_DMAENAB 0x1000
195 #define MGC_M_TXCSR_FRCDATATOG 0x0800
196 #define MGC_M_TXCSR_DMAMODE 0x0400
197 #define MGC_M_TXCSR_CLRDATATOG 0x0040
198 #define MGC_M_TXCSR_FLUSHFIFO 0x0008
199 #define MGC_M_TXCSR_FIFONOTEMPTY 0x0002
200 #define MGC_M_TXCSR_TXPKTRDY 0x0001
201
202 /* TXCSR in Peripheral mode */
203 #define MGC_M_TXCSR_P_INCOMPTX 0x0080
204 #define MGC_M_TXCSR_P_SENTSTALL 0x0020
205 #define MGC_M_TXCSR_P_SENDSTALL 0x0010
206 #define MGC_M_TXCSR_P_UNDERRUN 0x0004
207
208 /* TXCSR in Host mode */
209 #define MGC_M_TXCSR_H_WR_DATATOGGLE 0x0200
210 #define MGC_M_TXCSR_H_DATATOGGLE 0x0100
211 #define MGC_M_TXCSR_H_NAKTIMEOUT 0x0080
212 #define MGC_M_TXCSR_H_RXSTALL 0x0020
213 #define MGC_M_TXCSR_H_ERROR 0x0004
214
215 /* RXCSR in Peripheral and Host mode */
216 #define MGC_M_RXCSR_AUTOCLEAR 0x8000
217 #define MGC_M_RXCSR_DMAENAB 0x2000
218 #define MGC_M_RXCSR_DISNYET 0x1000
219 #define MGC_M_RXCSR_DMAMODE 0x0800
220 #define MGC_M_RXCSR_INCOMPRX 0x0100
221 #define MGC_M_RXCSR_CLRDATATOG 0x0080
222 #define MGC_M_RXCSR_FLUSHFIFO 0x0010
223 #define MGC_M_RXCSR_DATAERROR 0x0008
224 #define MGC_M_RXCSR_FIFOFULL 0x0002
225 #define MGC_M_RXCSR_RXPKTRDY 0x0001
226
227 /* RXCSR in Peripheral mode */
228 #define MGC_M_RXCSR_P_ISO 0x4000
229 #define MGC_M_RXCSR_P_SENTSTALL 0x0040
230 #define MGC_M_RXCSR_P_SENDSTALL 0x0020
231 #define MGC_M_RXCSR_P_OVERRUN 0x0004
232
233 /* RXCSR in Host mode */
234 #define MGC_M_RXCSR_H_AUTOREQ 0x4000
235 #define MGC_M_RXCSR_H_WR_DATATOGGLE 0x0400
236 #define MGC_M_RXCSR_H_DATATOGGLE 0x0200
237 #define MGC_M_RXCSR_H_RXSTALL 0x0040
238 #define MGC_M_RXCSR_H_REQPKT 0x0020
239 #define MGC_M_RXCSR_H_ERROR 0x0004
240
241 /* HUBADDR */
242 #define MGC_M_HUBADDR_MULTI_TT 0x80
243
244 /* ULPI: Added in HDRC 1.9(?) & MHDRC 1.4 */
245 #define MGC_M_ULPI_VBCTL_USEEXTVBUSIND 0x02
246 #define MGC_M_ULPI_VBCTL_USEEXTVBUS 0x01
247 #define MGC_M_ULPI_REGCTL_INT_ENABLE 0x08
248 #define MGC_M_ULPI_REGCTL_READNOTWRITE 0x04
249 #define MGC_M_ULPI_REGCTL_COMPLETE 0x02
250 #define MGC_M_ULPI_REGCTL_REG 0x01
251
252 /* #define MUSB_DEBUG */
253
254 #ifdef MUSB_DEBUG
255 #define TRACE(fmt,...) fprintf(stderr, "%s@%d: " fmt "\n", __FUNCTION__, \
256 __LINE__, ##__VA_ARGS__)
257 #else
258 #define TRACE(...)
259 #endif
260
261
262 static void musb_attach(USBPort *port);
263 static void musb_detach(USBPort *port);
264 static void musb_schedule_cb(USBDevice *dev, USBPacket *p);
265 static void musb_device_destroy(USBBus *bus, USBDevice *dev);
266
267 static USBPortOps musb_port_ops = {
268 .attach = musb_attach,
269 .detach = musb_detach,
270 .complete = musb_schedule_cb,
271 };
272
273 static USBBusOps musb_bus_ops = {
274 .device_destroy = musb_device_destroy,
275 };
276
277 typedef struct MUSBPacket MUSBPacket;
278 typedef struct MUSBEndPoint MUSBEndPoint;
279
280 struct MUSBPacket {
281 USBPacket p;
282 MUSBEndPoint *ep;
283 int dir;
284 };
285
286 struct MUSBEndPoint {
287 uint16_t faddr[2];
288 uint8_t haddr[2];
289 uint8_t hport[2];
290 uint16_t csr[2];
291 uint16_t maxp[2];
292 uint16_t rxcount;
293 uint8_t type[2];
294 uint8_t interval[2];
295 uint8_t config;
296 uint8_t fifosize;
297 int timeout[2]; /* Always in microframes */
298
299 uint8_t *buf[2];
300 int fifolen[2];
301 int fifostart[2];
302 int fifoaddr[2];
303 MUSBPacket packey[2];
304 int status[2];
305 int ext_size[2];
306
307 /* For callbacks' use */
308 int epnum;
309 int interrupt[2];
310 MUSBState *musb;
311 USBCallback *delayed_cb[2];
312 QEMUTimer *intv_timer[2];
313 };
314
315 struct MUSBState {
316 qemu_irq *irqs;
317 USBBus bus;
318 USBPort port;
319
320 int idx;
321 uint8_t devctl;
322 uint8_t power;
323 uint8_t faddr;
324
325 uint8_t intr;
326 uint8_t mask;
327 uint16_t tx_intr;
328 uint16_t tx_mask;
329 uint16_t rx_intr;
330 uint16_t rx_mask;
331
332 int setup_len;
333 int session;
334
335 uint8_t buf[0x8000];
336
337 /* Duplicating the world since 2008!... probably we should have 32
338 * logical, single endpoints instead. */
339 MUSBEndPoint ep[16];
340 };
341
342 struct MUSBState *musb_init(qemu_irq *irqs)
343 {
344 MUSBState *s = qemu_mallocz(sizeof(*s));
345 int i;
346
347 s->irqs = irqs;
348
349 s->faddr = 0x00;
350 s->power = MGC_M_POWER_HSENAB;
351 s->tx_intr = 0x0000;
352 s->rx_intr = 0x0000;
353 s->tx_mask = 0xffff;
354 s->rx_mask = 0xffff;
355 s->intr = 0x00;
356 s->mask = 0x06;
357 s->idx = 0;
358
359 /* TODO: _DW */
360 s->ep[0].config = MGC_M_CONFIGDATA_SOFTCONE | MGC_M_CONFIGDATA_DYNFIFO;
361 for (i = 0; i < 16; i ++) {
362 s->ep[i].fifosize = 64;
363 s->ep[i].maxp[0] = 0x40;
364 s->ep[i].maxp[1] = 0x40;
365 s->ep[i].musb = s;
366 s->ep[i].epnum = i;
367 }
368
369 usb_bus_new(&s->bus, &musb_bus_ops, NULL /* FIXME */);
370 usb_register_port(&s->bus, &s->port, s, 0, &musb_port_ops,
371 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
372 usb_port_location(&s->port, NULL, 1);
373
374 return s;
375 }
376
377 static void musb_vbus_set(MUSBState *s, int level)
378 {
379 if (level)
380 s->devctl |= 3 << MGC_S_DEVCTL_VBUS;
381 else
382 s->devctl &= ~MGC_M_DEVCTL_VBUS;
383
384 qemu_set_irq(s->irqs[musb_set_vbus], level);
385 }
386
387 static void musb_intr_set(MUSBState *s, int line, int level)
388 {
389 if (!level) {
390 s->intr &= ~(1 << line);
391 qemu_irq_lower(s->irqs[line]);
392 } else if (s->mask & (1 << line)) {
393 s->intr |= 1 << line;
394 qemu_irq_raise(s->irqs[line]);
395 }
396 }
397
398 static void musb_tx_intr_set(MUSBState *s, int line, int level)
399 {
400 if (!level) {
401 s->tx_intr &= ~(1 << line);
402 if (!s->tx_intr)
403 qemu_irq_lower(s->irqs[musb_irq_tx]);
404 } else if (s->tx_mask & (1 << line)) {
405 s->tx_intr |= 1 << line;
406 qemu_irq_raise(s->irqs[musb_irq_tx]);
407 }
408 }
409
410 static void musb_rx_intr_set(MUSBState *s, int line, int level)
411 {
412 if (line) {
413 if (!level) {
414 s->rx_intr &= ~(1 << line);
415 if (!s->rx_intr)
416 qemu_irq_lower(s->irqs[musb_irq_rx]);
417 } else if (s->rx_mask & (1 << line)) {
418 s->rx_intr |= 1 << line;
419 qemu_irq_raise(s->irqs[musb_irq_rx]);
420 }
421 } else
422 musb_tx_intr_set(s, line, level);
423 }
424
425 uint32_t musb_core_intr_get(MUSBState *s)
426 {
427 return (s->rx_intr << 15) | s->tx_intr;
428 }
429
430 void musb_core_intr_clear(MUSBState *s, uint32_t mask)
431 {
432 if (s->rx_intr) {
433 s->rx_intr &= mask >> 15;
434 if (!s->rx_intr)
435 qemu_irq_lower(s->irqs[musb_irq_rx]);
436 }
437
438 if (s->tx_intr) {
439 s->tx_intr &= mask & 0xffff;
440 if (!s->tx_intr)
441 qemu_irq_lower(s->irqs[musb_irq_tx]);
442 }
443 }
444
445 void musb_set_size(MUSBState *s, int epnum, int size, int is_tx)
446 {
447 s->ep[epnum].ext_size[!is_tx] = size;
448 s->ep[epnum].fifostart[0] = 0;
449 s->ep[epnum].fifostart[1] = 0;
450 s->ep[epnum].fifolen[0] = 0;
451 s->ep[epnum].fifolen[1] = 0;
452 }
453
454 static void musb_session_update(MUSBState *s, int prev_dev, int prev_sess)
455 {
456 int detect_prev = prev_dev && prev_sess;
457 int detect = !!s->port.dev && s->session;
458
459 if (detect && !detect_prev) {
460 /* Let's skip the ID pin sense and VBUS sense formalities and
461 * and signal a successful SRP directly. This should work at least
462 * for the Linux driver stack. */
463 musb_intr_set(s, musb_irq_connect, 1);
464
465 if (s->port.dev->speed == USB_SPEED_LOW) {
466 s->devctl &= ~MGC_M_DEVCTL_FSDEV;
467 s->devctl |= MGC_M_DEVCTL_LSDEV;
468 } else {
469 s->devctl |= MGC_M_DEVCTL_FSDEV;
470 s->devctl &= ~MGC_M_DEVCTL_LSDEV;
471 }
472
473 /* A-mode? */
474 s->devctl &= ~MGC_M_DEVCTL_BDEVICE;
475
476 /* Host-mode bit? */
477 s->devctl |= MGC_M_DEVCTL_HM;
478 #if 1
479 musb_vbus_set(s, 1);
480 #endif
481 } else if (!detect && detect_prev) {
482 #if 1
483 musb_vbus_set(s, 0);
484 #endif
485 }
486 }
487
488 /* Attach or detach a device on our only port. */
489 static void musb_attach(USBPort *port)
490 {
491 MUSBState *s = (MUSBState *) port->opaque;
492
493 musb_intr_set(s, musb_irq_vbus_request, 1);
494 musb_session_update(s, 0, s->session);
495 }
496
497 static void musb_detach(USBPort *port)
498 {
499 MUSBState *s = (MUSBState *) port->opaque;
500
501 musb_intr_set(s, musb_irq_disconnect, 1);
502 musb_session_update(s, 1, s->session);
503 }
504
505 static void musb_cb_tick0(void *opaque)
506 {
507 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
508
509 ep->delayed_cb[0](&ep->packey[0].p, opaque);
510 }
511
512 static void musb_cb_tick1(void *opaque)
513 {
514 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
515
516 ep->delayed_cb[1](&ep->packey[1].p, opaque);
517 }
518
519 #define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
520
521 static void musb_schedule_cb(USBDevice *dev, USBPacket *packey)
522 {
523 MUSBPacket *p = container_of(packey, MUSBPacket, p);
524 MUSBEndPoint *ep = p->ep;
525 int dir = p->dir;
526 int timeout = 0;
527
528 if (ep->status[dir] == USB_RET_NAK)
529 timeout = ep->timeout[dir];
530 else if (ep->interrupt[dir])
531 timeout = 8;
532 else
533 return musb_cb_tick(ep);
534
535 if (!ep->intv_timer[dir])
536 ep->intv_timer[dir] = qemu_new_timer_ns(vm_clock, musb_cb_tick, ep);
537
538 qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock_ns(vm_clock) +
539 muldiv64(timeout, get_ticks_per_sec(), 8000));
540 }
541
542 static int musb_timeout(int ttype, int speed, int val)
543 {
544 #if 1
545 return val << 3;
546 #endif
547
548 switch (ttype) {
549 case USB_ENDPOINT_XFER_CONTROL:
550 if (val < 2)
551 return 0;
552 else if (speed == USB_SPEED_HIGH)
553 return 1 << (val - 1);
554 else
555 return 8 << (val - 1);
556
557 case USB_ENDPOINT_XFER_INT:
558 if (speed == USB_SPEED_HIGH)
559 if (val < 2)
560 return 0;
561 else
562 return 1 << (val - 1);
563 else
564 return val << 3;
565
566 case USB_ENDPOINT_XFER_BULK:
567 case USB_ENDPOINT_XFER_ISOC:
568 if (val < 2)
569 return 0;
570 else if (speed == USB_SPEED_HIGH)
571 return 1 << (val - 1);
572 else
573 return 8 << (val - 1);
574 /* TODO: what with low-speed Bulk and Isochronous? */
575 }
576
577 hw_error("bad interval\n");
578 }
579
580 static void musb_packet(MUSBState *s, MUSBEndPoint *ep,
581 int epnum, int pid, int len, USBCallback cb, int dir)
582 {
583 int ret;
584 int idx = epnum && dir;
585 int ttype;
586
587 /* ep->type[0,1] contains:
588 * in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
589 * in bits 5:4 the transfer type (BULK / INT)
590 * in bits 3:0 the EP num
591 */
592 ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0;
593
594 ep->timeout[dir] = musb_timeout(ttype,
595 ep->type[idx] >> 6, ep->interval[idx]);
596 ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT;
597 ep->delayed_cb[dir] = cb;
598
599 ep->packey[dir].p.pid = pid;
600 /* A wild guess on the FADDR semantics... */
601 ep->packey[dir].p.devaddr = ep->faddr[idx];
602 ep->packey[dir].p.devep = ep->type[idx] & 0xf;
603 ep->packey[dir].p.data = (void *) ep->buf[idx];
604 ep->packey[dir].p.len = len;
605 ep->packey[dir].ep = ep;
606 ep->packey[dir].dir = dir;
607
608 if (s->port.dev)
609 ret = usb_handle_packet(s->port.dev, &ep->packey[dir].p);
610 else
611 ret = USB_RET_NODEV;
612
613 if (ret == USB_RET_ASYNC) {
614 ep->status[dir] = len;
615 return;
616 }
617
618 ep->status[dir] = ret;
619 usb_packet_complete(s->port.dev, &ep->packey[dir].p);
620 }
621
622 static void musb_tx_packet_complete(USBPacket *packey, void *opaque)
623 {
624 /* Unfortunately we can't use packey->devep because that's the remote
625 * endpoint number and may be different than our local. */
626 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
627 int epnum = ep->epnum;
628 MUSBState *s = ep->musb;
629
630 ep->fifostart[0] = 0;
631 ep->fifolen[0] = 0;
632 #ifdef CLEAR_NAK
633 if (ep->status[0] != USB_RET_NAK) {
634 #endif
635 if (epnum)
636 ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
637 else
638 ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
639 #ifdef CLEAR_NAK
640 }
641 #endif
642
643 /* Clear all of the error bits first */
644 if (epnum)
645 ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
646 MGC_M_TXCSR_H_NAKTIMEOUT);
647 else
648 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
649 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
650
651 if (ep->status[0] == USB_RET_STALL) {
652 /* Command not supported by target! */
653 ep->status[0] = 0;
654
655 if (epnum)
656 ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
657 else
658 ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
659 }
660
661 if (ep->status[0] == USB_RET_NAK) {
662 ep->status[0] = 0;
663
664 /* NAK timeouts are only generated in Bulk transfers and
665 * Data-errors in Isochronous. */
666 if (ep->interrupt[0]) {
667 return;
668 }
669
670 if (epnum)
671 ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
672 else
673 ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
674 }
675
676 if (ep->status[0] < 0) {
677 if (ep->status[0] == USB_RET_BABBLE)
678 musb_intr_set(s, musb_irq_rst_babble, 1);
679
680 /* Pretend we've tried three times already and failed (in
681 * case of USB_TOKEN_SETUP). */
682 if (epnum)
683 ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
684 else
685 ep->csr[0] |= MGC_M_CSR0_H_ERROR;
686
687 musb_tx_intr_set(s, epnum, 1);
688 return;
689 }
690 /* TODO: check len for over/underruns of an OUT packet? */
691
692 #ifdef SETUPLEN_HACK
693 if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP)
694 s->setup_len = ep->packey[0].data[6];
695 #endif
696
697 /* In DMA mode: if no error, assert DMA request for this EP,
698 * and skip the interrupt. */
699 musb_tx_intr_set(s, epnum, 1);
700 }
701
702 static void musb_rx_packet_complete(USBPacket *packey, void *opaque)
703 {
704 /* Unfortunately we can't use packey->devep because that's the remote
705 * endpoint number and may be different than our local. */
706 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
707 int epnum = ep->epnum;
708 MUSBState *s = ep->musb;
709
710 ep->fifostart[1] = 0;
711 ep->fifolen[1] = 0;
712
713 #ifdef CLEAR_NAK
714 if (ep->status[1] != USB_RET_NAK) {
715 #endif
716 ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
717 if (!epnum)
718 ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
719 #ifdef CLEAR_NAK
720 }
721 #endif
722
723 /* Clear all of the imaginable error bits first */
724 ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
725 MGC_M_RXCSR_DATAERROR);
726 if (!epnum)
727 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
728 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
729
730 if (ep->status[1] == USB_RET_STALL) {
731 ep->status[1] = 0;
732 packey->len = 0;
733
734 ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
735 if (!epnum)
736 ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
737 }
738
739 if (ep->status[1] == USB_RET_NAK) {
740 ep->status[1] = 0;
741
742 /* NAK timeouts are only generated in Bulk transfers and
743 * Data-errors in Isochronous. */
744 if (ep->interrupt[1])
745 return musb_packet(s, ep, epnum, USB_TOKEN_IN,
746 packey->len, musb_rx_packet_complete, 1);
747
748 ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
749 if (!epnum)
750 ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
751 }
752
753 if (ep->status[1] < 0) {
754 if (ep->status[1] == USB_RET_BABBLE) {
755 musb_intr_set(s, musb_irq_rst_babble, 1);
756 return;
757 }
758
759 /* Pretend we've tried three times already and failed (in
760 * case of a control transfer). */
761 ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
762 if (!epnum)
763 ep->csr[0] |= MGC_M_CSR0_H_ERROR;
764
765 musb_rx_intr_set(s, epnum, 1);
766 return;
767 }
768 /* TODO: check len for over/underruns of an OUT packet? */
769 /* TODO: perhaps make use of e->ext_size[1] here. */
770
771 packey->len = ep->status[1];
772
773 if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) {
774 ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
775 if (!epnum)
776 ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
777
778 ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
779 /* In DMA mode: assert DMA request for this EP */
780 }
781
782 /* Only if DMA has not been asserted */
783 musb_rx_intr_set(s, epnum, 1);
784 }
785
786 static void musb_device_destroy(USBBus *bus, USBDevice *dev)
787 {
788 MUSBState *s = container_of(bus, MUSBState, bus);
789 int ep, dir;
790
791 for (ep = 0; ep < 16; ep++) {
792 for (dir = 0; dir < 2; dir++) {
793 if (s->ep[ep].packey[dir].p.owner != dev) {
794 continue;
795 }
796 usb_cancel_packet(&s->ep[ep].packey[dir].p);
797 /* status updates needed here? */
798 }
799 }
800 }
801
802 static void musb_tx_rdy(MUSBState *s, int epnum)
803 {
804 MUSBEndPoint *ep = s->ep + epnum;
805 int pid;
806 int total, valid = 0;
807 TRACE("start %d, len %d", ep->fifostart[0], ep->fifolen[0] );
808 ep->fifostart[0] += ep->fifolen[0];
809 ep->fifolen[0] = 0;
810
811 /* XXX: how's the total size of the packet retrieved exactly in
812 * the generic case? */
813 total = ep->maxp[0] & 0x3ff;
814
815 if (ep->ext_size[0]) {
816 total = ep->ext_size[0];
817 ep->ext_size[0] = 0;
818 valid = 1;
819 }
820
821 /* If the packet is not fully ready yet, wait for a next segment. */
822 if (epnum && (ep->fifostart[0]) < total)
823 return;
824
825 if (!valid)
826 total = ep->fifostart[0];
827
828 pid = USB_TOKEN_OUT;
829 if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) {
830 pid = USB_TOKEN_SETUP;
831 if (total != 8) {
832 TRACE("illegal SETUPPKT length of %i bytes", total);
833 }
834 /* Controller should retry SETUP packets three times on errors
835 * but it doesn't make sense for us to do that. */
836 }
837
838 return musb_packet(s, ep, epnum, pid,
839 total, musb_tx_packet_complete, 0);
840 }
841
842 static void musb_rx_req(MUSBState *s, int epnum)
843 {
844 MUSBEndPoint *ep = s->ep + epnum;
845 int total;
846
847 /* If we already have a packet, which didn't fit into the
848 * 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
849 if (ep->packey[1].p.pid == USB_TOKEN_IN && ep->status[1] >= 0 &&
850 (ep->fifostart[1]) + ep->rxcount <
851 ep->packey[1].p.len) {
852 TRACE("0x%08x, %d", ep->fifostart[1], ep->rxcount );
853 ep->fifostart[1] += ep->rxcount;
854 ep->fifolen[1] = 0;
855
856 ep->rxcount = MIN(ep->packey[0].p.len - (ep->fifostart[1]),
857 ep->maxp[1]);
858
859 ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
860 if (!epnum)
861 ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
862
863 /* Clear all of the error bits first */
864 ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
865 MGC_M_RXCSR_DATAERROR);
866 if (!epnum)
867 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
868 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
869
870 ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
871 if (!epnum)
872 ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
873 musb_rx_intr_set(s, epnum, 1);
874 return;
875 }
876
877 /* The driver sets maxp[1] to 64 or less because it knows the hardware
878 * FIFO is this deep. Bigger packets get split in
879 * usb_generic_handle_packet but we can also do the splitting locally
880 * for performance. It turns out we can also have a bigger FIFO and
881 * ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
882 * OK with single packets of even 32KB and we avoid splitting, however
883 * usb_msd.c sometimes sends a packet bigger than what Linux expects
884 * (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
885 * hides this overrun from Linux. Up to 4096 everything is fine
886 * though. Currently this is disabled.
887 *
888 * XXX: mind ep->fifosize. */
889 total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf));
890
891 #ifdef SETUPLEN_HACK
892 /* Why should *we* do that instead of Linux? */
893 if (!epnum) {
894 if (ep->packey[0].p.devaddr == 2) {
895 total = MIN(s->setup_len, 8);
896 } else {
897 total = MIN(s->setup_len, 64);
898 }
899 s->setup_len -= total;
900 }
901 #endif
902
903 return musb_packet(s, ep, epnum, USB_TOKEN_IN,
904 total, musb_rx_packet_complete, 1);
905 }
906
907 static uint8_t musb_read_fifo(MUSBEndPoint *ep)
908 {
909 uint8_t value;
910 if (ep->fifolen[1] >= 64) {
911 /* We have a FIFO underrun */
912 TRACE("EP%d FIFO is now empty, stop reading", ep->epnum);
913 return 0x00000000;
914 }
915 /* In DMA mode clear RXPKTRDY and set REQPKT automatically
916 * (if AUTOREQ is set) */
917
918 ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
919 value=ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++];
920 TRACE("EP%d 0x%02x, %d", ep->epnum, value, ep->fifolen[1] );
921 return value;
922 }
923
924 static void musb_write_fifo(MUSBEndPoint *ep, uint8_t value)
925 {
926 TRACE("EP%d = %02x", ep->epnum, value);
927 if (ep->fifolen[0] >= 64) {
928 /* We have a FIFO overrun */
929 TRACE("EP%d FIFO exceeded 64 bytes, stop feeding data", ep->epnum);
930 return;
931 }
932
933 ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value;
934 ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
935 }
936
937 static void musb_ep_frame_cancel(MUSBEndPoint *ep, int dir)
938 {
939 if (ep->intv_timer[dir])
940 qemu_del_timer(ep->intv_timer[dir]);
941 }
942
943 /* Bus control */
944 static uint8_t musb_busctl_readb(void *opaque, int ep, int addr)
945 {
946 MUSBState *s = (MUSBState *) opaque;
947
948 switch (addr) {
949 /* For USB2.0 HS hubs only */
950 case MUSB_HDRC_TXHUBADDR:
951 return s->ep[ep].haddr[0];
952 case MUSB_HDRC_TXHUBPORT:
953 return s->ep[ep].hport[0];
954 case MUSB_HDRC_RXHUBADDR:
955 return s->ep[ep].haddr[1];
956 case MUSB_HDRC_RXHUBPORT:
957 return s->ep[ep].hport[1];
958
959 default:
960 TRACE("unknown register 0x%02x", addr);
961 return 0x00;
962 };
963 }
964
965 static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value)
966 {
967 MUSBState *s = (MUSBState *) opaque;
968
969 switch (addr) {
970 case MUSB_HDRC_TXFUNCADDR:
971 s->ep[ep].faddr[0] = value;
972 break;
973 case MUSB_HDRC_RXFUNCADDR:
974 s->ep[ep].faddr[1] = value;
975 break;
976 case MUSB_HDRC_TXHUBADDR:
977 s->ep[ep].haddr[0] = value;
978 break;
979 case MUSB_HDRC_TXHUBPORT:
980 s->ep[ep].hport[0] = value;
981 break;
982 case MUSB_HDRC_RXHUBADDR:
983 s->ep[ep].haddr[1] = value;
984 break;
985 case MUSB_HDRC_RXHUBPORT:
986 s->ep[ep].hport[1] = value;
987 break;
988
989 default:
990 TRACE("unknown register 0x%02x", addr);
991 break;
992 };
993 }
994
995 static uint16_t musb_busctl_readh(void *opaque, int ep, int addr)
996 {
997 MUSBState *s = (MUSBState *) opaque;
998
999 switch (addr) {
1000 case MUSB_HDRC_TXFUNCADDR:
1001 return s->ep[ep].faddr[0];
1002 case MUSB_HDRC_RXFUNCADDR:
1003 return s->ep[ep].faddr[1];
1004
1005 default:
1006 return musb_busctl_readb(s, ep, addr) |
1007 (musb_busctl_readb(s, ep, addr | 1) << 8);
1008 };
1009 }
1010
1011 static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value)
1012 {
1013 MUSBState *s = (MUSBState *) opaque;
1014
1015 switch (addr) {
1016 case MUSB_HDRC_TXFUNCADDR:
1017 s->ep[ep].faddr[0] = value;
1018 break;
1019 case MUSB_HDRC_RXFUNCADDR:
1020 s->ep[ep].faddr[1] = value;
1021 break;
1022
1023 default:
1024 musb_busctl_writeb(s, ep, addr, value & 0xff);
1025 musb_busctl_writeb(s, ep, addr | 1, value >> 8);
1026 };
1027 }
1028
1029 /* Endpoint control */
1030 static uint8_t musb_ep_readb(void *opaque, int ep, int addr)
1031 {
1032 MUSBState *s = (MUSBState *) opaque;
1033
1034 switch (addr) {
1035 case MUSB_HDRC_TXTYPE:
1036 return s->ep[ep].type[0];
1037 case MUSB_HDRC_TXINTERVAL:
1038 return s->ep[ep].interval[0];
1039 case MUSB_HDRC_RXTYPE:
1040 return s->ep[ep].type[1];
1041 case MUSB_HDRC_RXINTERVAL:
1042 return s->ep[ep].interval[1];
1043 case (MUSB_HDRC_FIFOSIZE & ~1):
1044 return 0x00;
1045 case MUSB_HDRC_FIFOSIZE:
1046 return ep ? s->ep[ep].fifosize : s->ep[ep].config;
1047 case MUSB_HDRC_RXCOUNT:
1048 return s->ep[ep].rxcount;
1049
1050 default:
1051 TRACE("unknown register 0x%02x", addr);
1052 return 0x00;
1053 };
1054 }
1055
1056 static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value)
1057 {
1058 MUSBState *s = (MUSBState *) opaque;
1059
1060 switch (addr) {
1061 case MUSB_HDRC_TXTYPE:
1062 s->ep[ep].type[0] = value;
1063 break;
1064 case MUSB_HDRC_TXINTERVAL:
1065 s->ep[ep].interval[0] = value;
1066 musb_ep_frame_cancel(&s->ep[ep], 0);
1067 break;
1068 case MUSB_HDRC_RXTYPE:
1069 s->ep[ep].type[1] = value;
1070 break;
1071 case MUSB_HDRC_RXINTERVAL:
1072 s->ep[ep].interval[1] = value;
1073 musb_ep_frame_cancel(&s->ep[ep], 1);
1074 break;
1075 case (MUSB_HDRC_FIFOSIZE & ~1):
1076 break;
1077 case MUSB_HDRC_FIFOSIZE:
1078 TRACE("somebody messes with fifosize (now %i bytes)", value);
1079 s->ep[ep].fifosize = value;
1080 break;
1081 default:
1082 TRACE("unknown register 0x%02x", addr);
1083 break;
1084 };
1085 }
1086
1087 static uint16_t musb_ep_readh(void *opaque, int ep, int addr)
1088 {
1089 MUSBState *s = (MUSBState *) opaque;
1090 uint16_t ret;
1091
1092 switch (addr) {
1093 case MUSB_HDRC_TXMAXP:
1094 return s->ep[ep].maxp[0];
1095 case MUSB_HDRC_TXCSR:
1096 return s->ep[ep].csr[0];
1097 case MUSB_HDRC_RXMAXP:
1098 return s->ep[ep].maxp[1];
1099 case MUSB_HDRC_RXCSR:
1100 ret = s->ep[ep].csr[1];
1101
1102 /* TODO: This and other bits probably depend on
1103 * ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
1104 if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR)
1105 s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
1106
1107 return ret;
1108 case MUSB_HDRC_RXCOUNT:
1109 return s->ep[ep].rxcount;
1110
1111 default:
1112 return musb_ep_readb(s, ep, addr) |
1113 (musb_ep_readb(s, ep, addr | 1) << 8);
1114 };
1115 }
1116
1117 static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value)
1118 {
1119 MUSBState *s = (MUSBState *) opaque;
1120
1121 switch (addr) {
1122 case MUSB_HDRC_TXMAXP:
1123 s->ep[ep].maxp[0] = value;
1124 break;
1125 case MUSB_HDRC_TXCSR:
1126 if (ep) {
1127 s->ep[ep].csr[0] &= value & 0xa6;
1128 s->ep[ep].csr[0] |= value & 0xff59;
1129 } else {
1130 s->ep[ep].csr[0] &= value & 0x85;
1131 s->ep[ep].csr[0] |= value & 0xf7a;
1132 }
1133
1134 musb_ep_frame_cancel(&s->ep[ep], 0);
1135
1136 if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
1137 (!ep && (value & MGC_M_CSR0_FLUSHFIFO))) {
1138 s->ep[ep].fifolen[0] = 0;
1139 s->ep[ep].fifostart[0] = 0;
1140 if (ep)
1141 s->ep[ep].csr[0] &=
1142 ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
1143 else
1144 s->ep[ep].csr[0] &=
1145 ~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY);
1146 }
1147 if (
1148 (ep &&
1149 #ifdef CLEAR_NAK
1150 (value & MGC_M_TXCSR_TXPKTRDY) &&
1151 !(value & MGC_M_TXCSR_H_NAKTIMEOUT)) ||
1152 #else
1153 (value & MGC_M_TXCSR_TXPKTRDY)) ||
1154 #endif
1155 (!ep &&
1156 #ifdef CLEAR_NAK
1157 (value & MGC_M_CSR0_TXPKTRDY) &&
1158 !(value & MGC_M_CSR0_H_NAKTIMEOUT)))
1159 #else
1160 (value & MGC_M_CSR0_TXPKTRDY)))
1161 #endif
1162 musb_tx_rdy(s, ep);
1163 if (!ep &&
1164 (value & MGC_M_CSR0_H_REQPKT) &&
1165 #ifdef CLEAR_NAK
1166 !(value & (MGC_M_CSR0_H_NAKTIMEOUT |
1167 MGC_M_CSR0_RXPKTRDY)))
1168 #else
1169 !(value & MGC_M_CSR0_RXPKTRDY))
1170 #endif
1171 musb_rx_req(s, ep);
1172 break;
1173
1174 case MUSB_HDRC_RXMAXP:
1175 s->ep[ep].maxp[1] = value;
1176 break;
1177 case MUSB_HDRC_RXCSR:
1178 /* (DMA mode only) */
1179 if (
1180 (value & MGC_M_RXCSR_H_AUTOREQ) &&
1181 !(value & MGC_M_RXCSR_RXPKTRDY) &&
1182 (s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
1183 value |= MGC_M_RXCSR_H_REQPKT;
1184
1185 s->ep[ep].csr[1] &= 0x102 | (value & 0x4d);
1186 s->ep[ep].csr[1] |= value & 0xfeb0;
1187
1188 musb_ep_frame_cancel(&s->ep[ep], 1);
1189
1190 if (value & MGC_M_RXCSR_FLUSHFIFO) {
1191 s->ep[ep].fifolen[1] = 0;
1192 s->ep[ep].fifostart[1] = 0;
1193 s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
1194 /* If double buffering and we have two packets ready, flush
1195 * only the first one and set up the fifo at the second packet. */
1196 }
1197 #ifdef CLEAR_NAK
1198 if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
1199 #else
1200 if (value & MGC_M_RXCSR_H_REQPKT)
1201 #endif
1202 musb_rx_req(s, ep);
1203 break;
1204 case MUSB_HDRC_RXCOUNT:
1205 s->ep[ep].rxcount = value;
1206 break;
1207
1208 default:
1209 musb_ep_writeb(s, ep, addr, value & 0xff);
1210 musb_ep_writeb(s, ep, addr | 1, value >> 8);
1211 };
1212 }
1213
1214 /* Generic control */
1215 static uint32_t musb_readb(void *opaque, target_phys_addr_t addr)
1216 {
1217 MUSBState *s = (MUSBState *) opaque;
1218 int ep, i;
1219 uint8_t ret;
1220
1221 switch (addr) {
1222 case MUSB_HDRC_FADDR:
1223 return s->faddr;
1224 case MUSB_HDRC_POWER:
1225 return s->power;
1226 case MUSB_HDRC_INTRUSB:
1227 ret = s->intr;
1228 for (i = 0; i < sizeof(ret) * 8; i ++)
1229 if (ret & (1 << i))
1230 musb_intr_set(s, i, 0);
1231 return ret;
1232 case MUSB_HDRC_INTRUSBE:
1233 return s->mask;
1234 case MUSB_HDRC_INDEX:
1235 return s->idx;
1236 case MUSB_HDRC_TESTMODE:
1237 return 0x00;
1238
1239 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1240 return musb_ep_readb(s, s->idx, addr & 0xf);
1241
1242 case MUSB_HDRC_DEVCTL:
1243 return s->devctl;
1244
1245 case MUSB_HDRC_TXFIFOSZ:
1246 case MUSB_HDRC_RXFIFOSZ:
1247 case MUSB_HDRC_VCTRL:
1248 /* TODO */
1249 return 0x00;
1250
1251 case MUSB_HDRC_HWVERS:
1252 return (1 << 10) | 400;
1253
1254 case (MUSB_HDRC_VCTRL | 1):
1255 case (MUSB_HDRC_HWVERS | 1):
1256 case (MUSB_HDRC_DEVCTL | 1):
1257 return 0x00;
1258
1259 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1260 ep = (addr >> 3) & 0xf;
1261 return musb_busctl_readb(s, ep, addr & 0x7);
1262
1263 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1264 ep = (addr >> 4) & 0xf;
1265 return musb_ep_readb(s, ep, addr & 0xf);
1266
1267 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1268 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1269 return musb_read_fifo(s->ep + ep);
1270
1271 default:
1272 TRACE("unknown register 0x%02x", (int) addr);
1273 return 0x00;
1274 };
1275 }
1276
1277 static void musb_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
1278 {
1279 MUSBState *s = (MUSBState *) opaque;
1280 int ep;
1281
1282 switch (addr) {
1283 case MUSB_HDRC_FADDR:
1284 s->faddr = value & 0x7f;
1285 break;
1286 case MUSB_HDRC_POWER:
1287 s->power = (value & 0xef) | (s->power & 0x10);
1288 /* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
1289 if ((value & MGC_M_POWER_RESET) && s->port.dev) {
1290 usb_send_msg(s->port.dev, USB_MSG_RESET);
1291 /* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
1292 if ((value & MGC_M_POWER_HSENAB) &&
1293 s->port.dev->speed == USB_SPEED_HIGH)
1294 s->power |= MGC_M_POWER_HSMODE; /* Success */
1295 /* Restart frame counting. */
1296 }
1297 if (value & MGC_M_POWER_SUSPENDM) {
1298 /* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
1299 * is set, also go into low power mode. Frame counting stops. */
1300 /* XXX: Cleared when the interrupt register is read */
1301 }
1302 if (value & MGC_M_POWER_RESUME) {
1303 /* Wait 20ms and signal resuming on the bus. Frame counting
1304 * restarts. */
1305 }
1306 break;
1307 case MUSB_HDRC_INTRUSB:
1308 break;
1309 case MUSB_HDRC_INTRUSBE:
1310 s->mask = value & 0xff;
1311 break;
1312 case MUSB_HDRC_INDEX:
1313 s->idx = value & 0xf;
1314 break;
1315 case MUSB_HDRC_TESTMODE:
1316 break;
1317
1318 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1319 musb_ep_writeb(s, s->idx, addr & 0xf, value);
1320 break;
1321
1322 case MUSB_HDRC_DEVCTL:
1323 s->session = !!(value & MGC_M_DEVCTL_SESSION);
1324 musb_session_update(s,
1325 !!s->port.dev,
1326 !!(s->devctl & MGC_M_DEVCTL_SESSION));
1327
1328 /* It seems this is the only R/W bit in this register? */
1329 s->devctl &= ~MGC_M_DEVCTL_SESSION;
1330 s->devctl |= value & MGC_M_DEVCTL_SESSION;
1331 break;
1332
1333 case MUSB_HDRC_TXFIFOSZ:
1334 case MUSB_HDRC_RXFIFOSZ:
1335 case MUSB_HDRC_VCTRL:
1336 /* TODO */
1337 break;
1338
1339 case (MUSB_HDRC_VCTRL | 1):
1340 case (MUSB_HDRC_DEVCTL | 1):
1341 break;
1342
1343 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1344 ep = (addr >> 3) & 0xf;
1345 musb_busctl_writeb(s, ep, addr & 0x7, value);
1346 break;
1347
1348 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1349 ep = (addr >> 4) & 0xf;
1350 musb_ep_writeb(s, ep, addr & 0xf, value);
1351 break;
1352
1353 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1354 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1355 musb_write_fifo(s->ep + ep, value & 0xff);
1356 break;
1357
1358 default:
1359 TRACE("unknown register 0x%02x", (int) addr);
1360 break;
1361 };
1362 }
1363
1364 static uint32_t musb_readh(void *opaque, target_phys_addr_t addr)
1365 {
1366 MUSBState *s = (MUSBState *) opaque;
1367 int ep, i;
1368 uint16_t ret;
1369
1370 switch (addr) {
1371 case MUSB_HDRC_INTRTX:
1372 ret = s->tx_intr;
1373 /* Auto clear */
1374 for (i = 0; i < sizeof(ret) * 8; i ++)
1375 if (ret & (1 << i))
1376 musb_tx_intr_set(s, i, 0);
1377 return ret;
1378 case MUSB_HDRC_INTRRX:
1379 ret = s->rx_intr;
1380 /* Auto clear */
1381 for (i = 0; i < sizeof(ret) * 8; i ++)
1382 if (ret & (1 << i))
1383 musb_rx_intr_set(s, i, 0);
1384 return ret;
1385 case MUSB_HDRC_INTRTXE:
1386 return s->tx_mask;
1387 case MUSB_HDRC_INTRRXE:
1388 return s->rx_mask;
1389
1390 case MUSB_HDRC_FRAME:
1391 /* TODO */
1392 return 0x0000;
1393 case MUSB_HDRC_TXFIFOADDR:
1394 return s->ep[s->idx].fifoaddr[0];
1395 case MUSB_HDRC_RXFIFOADDR:
1396 return s->ep[s->idx].fifoaddr[1];
1397
1398 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1399 return musb_ep_readh(s, s->idx, addr & 0xf);
1400
1401 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1402 ep = (addr >> 3) & 0xf;
1403 return musb_busctl_readh(s, ep, addr & 0x7);
1404
1405 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1406 ep = (addr >> 4) & 0xf;
1407 return musb_ep_readh(s, ep, addr & 0xf);
1408
1409 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1410 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1411 return (musb_read_fifo(s->ep + ep) | musb_read_fifo(s->ep + ep) << 8);
1412
1413 default:
1414 return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8);
1415 };
1416 }
1417
1418 static void musb_writeh(void *opaque, target_phys_addr_t addr, uint32_t value)
1419 {
1420 MUSBState *s = (MUSBState *) opaque;
1421 int ep;
1422
1423 switch (addr) {
1424 case MUSB_HDRC_INTRTXE:
1425 s->tx_mask = value;
1426 /* XXX: the masks seem to apply on the raising edge like with
1427 * edge-triggered interrupts, thus no need to update. I may be
1428 * wrong though. */
1429 break;
1430 case MUSB_HDRC_INTRRXE:
1431 s->rx_mask = value;
1432 break;
1433
1434 case MUSB_HDRC_FRAME:
1435 /* TODO */
1436 break;
1437 case MUSB_HDRC_TXFIFOADDR:
1438 s->ep[s->idx].fifoaddr[0] = value;
1439 s->ep[s->idx].buf[0] =
1440 s->buf + ((value << 3) & 0x7ff );
1441 break;
1442 case MUSB_HDRC_RXFIFOADDR:
1443 s->ep[s->idx].fifoaddr[1] = value;
1444 s->ep[s->idx].buf[1] =
1445 s->buf + ((value << 3) & 0x7ff);
1446 break;
1447
1448 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1449 musb_ep_writeh(s, s->idx, addr & 0xf, value);
1450 break;
1451
1452 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1453 ep = (addr >> 3) & 0xf;
1454 musb_busctl_writeh(s, ep, addr & 0x7, value);
1455 break;
1456
1457 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1458 ep = (addr >> 4) & 0xf;
1459 musb_ep_writeh(s, ep, addr & 0xf, value);
1460 break;
1461
1462 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1463 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1464 musb_write_fifo(s->ep + ep, value & 0xff);
1465 musb_write_fifo(s->ep + ep, (value >> 8) & 0xff);
1466 break;
1467
1468 default:
1469 musb_writeb(s, addr, value & 0xff);
1470 musb_writeb(s, addr | 1, value >> 8);
1471 };
1472 }
1473
1474 static uint32_t musb_readw(void *opaque, target_phys_addr_t addr)
1475 {
1476 MUSBState *s = (MUSBState *) opaque;
1477 int ep;
1478
1479 switch (addr) {
1480 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1481 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1482 return ( musb_read_fifo(s->ep + ep) |
1483 musb_read_fifo(s->ep + ep) << 8 |
1484 musb_read_fifo(s->ep + ep) << 16 |
1485 musb_read_fifo(s->ep + ep) << 24 );
1486 default:
1487 TRACE("unknown register 0x%02x", (int) addr);
1488 return 0x00000000;
1489 };
1490 }
1491
1492 static void musb_writew(void *opaque, target_phys_addr_t addr, uint32_t value)
1493 {
1494 MUSBState *s = (MUSBState *) opaque;
1495 int ep;
1496
1497 switch (addr) {
1498 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1499 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1500 musb_write_fifo(s->ep + ep, value & 0xff);
1501 musb_write_fifo(s->ep + ep, (value >> 8 ) & 0xff);
1502 musb_write_fifo(s->ep + ep, (value >> 16) & 0xff);
1503 musb_write_fifo(s->ep + ep, (value >> 24) & 0xff);
1504 break;
1505 default:
1506 TRACE("unknown register 0x%02x", (int) addr);
1507 break;
1508 };
1509 }
1510
1511 CPUReadMemoryFunc * const musb_read[] = {
1512 musb_readb,
1513 musb_readh,
1514 musb_readw,
1515 };
1516
1517 CPUWriteMemoryFunc * const musb_write[] = {
1518 musb_writeb,
1519 musb_writeh,
1520 musb_writew,
1521 };
Qemu copy for testing