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942ac052
AZ		 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 <[email protected]>
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 *
fad6cb1a 18 * You should have received a copy of the GNU General Public License along
8167ee88 19 * with this program; if not, see <http://www.gnu.org/licenses/>.
942ac052
AZ		 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"
384dce1e 27#include "hw.h"
942ac052
AZ		 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
384dce1e
RV		 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
618c169b
GH		 262static void musb_attach(USBPort *port);
263static void musb_detach(USBPort *port);
4706ab6c 264static void musb_child_detach(USBPort *port, USBDevice *child);
d47e59b8 265static void musb_schedule_cb(USBPort *port, USBPacket *p);
4706ab6c 266static void musb_async_cancel_device(MUSBState *s, USBDevice *dev);
942ac052 267
0d86d2be
GH		 268static USBPortOps musb_port_ops = {
269 .attach = musb_attach,
618c169b 270 .detach = musb_detach,
4706ab6c 271 .child_detach = musb_child_detach,
13a9a0d3 272 .complete = musb_schedule_cb,
0d86d2be
GH		 273};
274
07771f6f 275static USBBusOps musb_bus_ops = {
07771f6f
GH		 276};
277
5dc1672b
GH		 278typedef struct MUSBPacket MUSBPacket;
279typedef struct MUSBEndPoint MUSBEndPoint;
280
281struct MUSBPacket {
282 USBPacket p;
283 MUSBEndPoint *ep;
284 int dir;
285};
286
287struct MUSBEndPoint {
bc24a225
PB		 288 uint16_t faddr[2];
289 uint8_t haddr[2];
290 uint8_t hport[2];
291 uint16_t csr[2];
292 uint16_t maxp[2];
293 uint16_t rxcount;
294 uint8_t type[2];
295 uint8_t interval[2];
296 uint8_t config;
297 uint8_t fifosize;
298 int timeout[2]; /* Always in microframes */
299
384dce1e 300 uint8_t *buf[2];
bc24a225
PB		 301 int fifolen[2];
302 int fifostart[2];
303 int fifoaddr[2];
5dc1672b 304 MUSBPacket packey[2];
bc24a225
PB		 305 int status[2];
306 int ext_size[2];
307
308 /* For callbacks' use */
309 int epnum;
310 int interrupt[2];
311 MUSBState *musb;
312 USBCallback *delayed_cb[2];
313 QEMUTimer *intv_timer[2];
5dc1672b 314};
bc24a225
PB		 315
316struct MUSBState {
942ac052 317 qemu_irq *irqs;
b2317837 318 USBBus bus;
942ac052
AZ		 319 USBPort port;
320
321 int idx;
322 uint8_t devctl;
323 uint8_t power;
324 uint8_t faddr;
325
326 uint8_t intr;
327 uint8_t mask;
328 uint16_t tx_intr;
329 uint16_t tx_mask;
330 uint16_t rx_intr;
331 uint16_t rx_mask;
332
333 int setup_len;
334 int session;
335
384dce1e 336 uint8_t buf[0x8000];
942ac052 337
942ac052
AZ		 338 /* Duplicating the world since 2008!... probably we should have 32
339 * logical, single endpoints instead. */
bc24a225 340 MUSBEndPoint ep[16];
5dc1672b
GH		 341};
342
343struct MUSBState *musb_init(qemu_irq *irqs)
942ac052 344{
bc24a225 345 MUSBState *s = qemu_mallocz(sizeof(*s));
942ac052
AZ		 346 int i;
347
348 s->irqs = irqs;
349
350 s->faddr = 0x00;
351 s->power = MGC_M_POWER_HSENAB;
352 s->tx_intr = 0x0000;
353 s->rx_intr = 0x0000;
354 s->tx_mask = 0xffff;
355 s->rx_mask = 0xffff;
356 s->intr = 0x00;
357 s->mask = 0x06;
358 s->idx = 0;
359
360 /* TODO: _DW */
361 s->ep[0].config = MGC_M_CONFIGDATA_SOFTCONE | MGC_M_CONFIGDATA_DYNFIFO;
362 for (i = 0; i < 16; i ++) {
363 s->ep[i].fifosize = 64;
364 s->ep[i].maxp[0] = 0x40;
365 s->ep[i].maxp[1] = 0x40;
366 s->ep[i].musb = s;
367 s->ep[i].epnum = i;
368 }
369
07771f6f 370 usb_bus_new(&s->bus, &musb_bus_ops, NULL /* FIXME */);
ace1318b 371 usb_register_port(&s->bus, &s->port, s, 0, &musb_port_ops,
843d4e0c 372 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
942ac052
AZ		 373
374 return s;
375}
376
bc24a225 377static void musb_vbus_set(MUSBState *s, int level)
942ac052
AZ		 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
bc24a225 387static void musb_intr_set(MUSBState *s, int line, int level)
942ac052
AZ		 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
bc24a225 398static void musb_tx_intr_set(MUSBState *s, int line, int level)
942ac052
AZ		 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
bc24a225 410static void musb_rx_intr_set(MUSBState *s, int line, int level)
942ac052
AZ		 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
bc24a225 425uint32_t musb_core_intr_get(MUSBState *s)
942ac052
AZ		 426{
427 return (s->rx_intr << 15) | s->tx_intr;
428}
429
bc24a225 430void musb_core_intr_clear(MUSBState *s, uint32_t mask)
942ac052
AZ		 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
bc24a225 445void musb_set_size(MUSBState *s, int epnum, int size, int is_tx)
942ac052
AZ		 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
bc24a225 454static void musb_session_update(MUSBState *s, int prev_dev, int prev_sess)
942ac052
AZ		 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. */
618c169b 489static void musb_attach(USBPort *port)
942ac052 490{
bc24a225 491 MUSBState *s = (MUSBState *) port->opaque;
942ac052 492
618c169b
GH		 493 musb_intr_set(s, musb_irq_vbus_request, 1);
494 musb_session_update(s, 0, s->session);
495}
942ac052 496
618c169b
GH		 497static void musb_detach(USBPort *port)
498{
499 MUSBState *s = (MUSBState *) port->opaque;
942ac052 500
4706ab6c
HG		 501 musb_async_cancel_device(s, port->dev);
502
618c169b
GH		 503 musb_intr_set(s, musb_irq_disconnect, 1);
504 musb_session_update(s, 1, s->session);
942ac052
AZ		 505}
506
4706ab6c
HG		 507static void musb_child_detach(USBPort *port, USBDevice *child)
508{
509 MUSBState *s = (MUSBState *) port->opaque;
510
511 musb_async_cancel_device(s, child);
512}
513
b3e5759e 514static void musb_cb_tick0(void *opaque)
942ac052 515{
bc24a225 516 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
942ac052 517
5dc1672b 518 ep->delayed_cb[0](&ep->packey[0].p, opaque);
942ac052
AZ		 519}
520
b3e5759e 521static void musb_cb_tick1(void *opaque)
942ac052 522{
bc24a225 523 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
942ac052 524
5dc1672b 525 ep->delayed_cb[1](&ep->packey[1].p, opaque);
942ac052
AZ		 526}
527
528#define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
529
d47e59b8 530static void musb_schedule_cb(USBPort *port, USBPacket *packey)
942ac052 531{
13a9a0d3
GH		 532 MUSBPacket *p = container_of(packey, MUSBPacket, p);
533 MUSBEndPoint *ep = p->ep;
534 int dir = p->dir;
942ac052
AZ		 535 int timeout = 0;
536
537 if (ep->status[dir] == USB_RET_NAK)
538 timeout = ep->timeout[dir];
539 else if (ep->interrupt[dir])
540 timeout = 8;
541 else
13a9a0d3 542 return musb_cb_tick(ep);
942ac052
AZ		 543
544 if (!ep->intv_timer[dir])
13a9a0d3 545 ep->intv_timer[dir] = qemu_new_timer_ns(vm_clock, musb_cb_tick, ep);
942ac052 546
74475455 547 qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock_ns(vm_clock) +
6ee093c9 548 muldiv64(timeout, get_ticks_per_sec(), 8000));
942ac052
AZ		 549}
550
942ac052
AZ		 551static int musb_timeout(int ttype, int speed, int val)
552{
553#if 1
554 return val << 3;
555#endif
556
557 switch (ttype) {
558 case USB_ENDPOINT_XFER_CONTROL:
559 if (val < 2)
560 return 0;
561 else if (speed == USB_SPEED_HIGH)
562 return 1 << (val - 1);
563 else
564 return 8 << (val - 1);
565
566 case USB_ENDPOINT_XFER_INT:
567 if (speed == USB_SPEED_HIGH)
568 if (val < 2)
569 return 0;
570 else
571 return 1 << (val - 1);
572 else
573 return val << 3;
574
575 case USB_ENDPOINT_XFER_BULK:
576 case USB_ENDPOINT_XFER_ISOC:
577 if (val < 2)
578 return 0;
579 else if (speed == USB_SPEED_HIGH)
580 return 1 << (val - 1);
581 else
582 return 8 << (val - 1);
583 /* TODO: what with low-speed Bulk and Isochronous? */
584 }
585
2ac71179 586 hw_error("bad interval\n");
942ac052
AZ		 587}
588
b3e5759e 589static void musb_packet(MUSBState *s, MUSBEndPoint *ep,
942ac052
AZ		 590 int epnum, int pid, int len, USBCallback cb, int dir)
591{
592 int ret;
593 int idx = epnum && dir;
594 int ttype;
595
596 /* ep->type[0,1] contains:
597 * in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
598 * in bits 5:4 the transfer type (BULK / INT)
599 * in bits 3:0 the EP num
600 */
601 ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0;
602
603 ep->timeout[dir] = musb_timeout(ttype,
604 ep->type[idx] >> 6, ep->interval[idx]);
605 ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT;
606 ep->delayed_cb[dir] = cb;
942ac052 607
5dc1672b 608 ep->packey[dir].p.pid = pid;
942ac052 609 /* A wild guess on the FADDR semantics... */
5dc1672b
GH		 610 ep->packey[dir].p.devaddr = ep->faddr[idx];
611 ep->packey[dir].p.devep = ep->type[idx] & 0xf;
612 ep->packey[dir].p.data = (void *) ep->buf[idx];
613 ep->packey[dir].p.len = len;
5dc1672b
GH		 614 ep->packey[dir].ep = ep;
615 ep->packey[dir].dir = dir;
942ac052
AZ		 616
617 if (s->port.dev)
53aa8c0e 618 ret = usb_handle_packet(s->port.dev, &ep->packey[dir].p);
942ac052
AZ		 619 else
620 ret = USB_RET_NODEV;
621
622 if (ret == USB_RET_ASYNC) {
623 ep->status[dir] = len;
624 return;
625 }
626
627 ep->status[dir] = ret;
d47e59b8 628 musb_schedule_cb(&s->port, &ep->packey[dir].p);
942ac052
AZ		 629}
630
631static void musb_tx_packet_complete(USBPacket *packey, void *opaque)
632{
633 /* Unfortunately we can't use packey->devep because that's the remote
634 * endpoint number and may be different than our local. */
bc24a225 635 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
942ac052 636 int epnum = ep->epnum;
bc24a225 637 MUSBState *s = ep->musb;
942ac052
AZ		 638
639 ep->fifostart[0] = 0;
640 ep->fifolen[0] = 0;
641#ifdef CLEAR_NAK
642 if (ep->status[0] != USB_RET_NAK) {
643#endif
644 if (epnum)
645 ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
646 else
647 ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
648#ifdef CLEAR_NAK
649 }
650#endif
651
652 /* Clear all of the error bits first */
653 if (epnum)
654 ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
655 MGC_M_TXCSR_H_NAKTIMEOUT);
656 else
657 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
658 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
659
660 if (ep->status[0] == USB_RET_STALL) {
661 /* Command not supported by target! */
662 ep->status[0] = 0;
663
664 if (epnum)
665 ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
666 else
667 ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
668 }
669
670 if (ep->status[0] == USB_RET_NAK) {
671 ep->status[0] = 0;
672
673 /* NAK timeouts are only generated in Bulk transfers and
674 * Data-errors in Isochronous. */
675 if (ep->interrupt[0]) {
676 return;
677 }
678
679 if (epnum)
680 ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
681 else
682 ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
683 }
684
685 if (ep->status[0] < 0) {
686 if (ep->status[0] == USB_RET_BABBLE)
687 musb_intr_set(s, musb_irq_rst_babble, 1);
688
689 /* Pretend we've tried three times already and failed (in
690 * case of USB_TOKEN_SETUP). */
691 if (epnum)
692 ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
693 else
694 ep->csr[0] |= MGC_M_CSR0_H_ERROR;
695
696 musb_tx_intr_set(s, epnum, 1);
697 return;
698 }
699 /* TODO: check len for over/underruns of an OUT packet? */
700
701#ifdef SETUPLEN_HACK
702 if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP)
703 s->setup_len = ep->packey[0].data[6];
704#endif
705
706 /* In DMA mode: if no error, assert DMA request for this EP,
707 * and skip the interrupt. */
708 musb_tx_intr_set(s, epnum, 1);
709}
710
711static void musb_rx_packet_complete(USBPacket *packey, void *opaque)
712{
713 /* Unfortunately we can't use packey->devep because that's the remote
714 * endpoint number and may be different than our local. */
bc24a225 715 MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
942ac052 716 int epnum = ep->epnum;
bc24a225 717 MUSBState *s = ep->musb;
942ac052
AZ		 718
719 ep->fifostart[1] = 0;
720 ep->fifolen[1] = 0;
721
722#ifdef CLEAR_NAK
723 if (ep->status[1] != USB_RET_NAK) {
724#endif
725 ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
726 if (!epnum)
727 ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
728#ifdef CLEAR_NAK
729 }
730#endif
731
732 /* Clear all of the imaginable error bits first */
733 ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
734 MGC_M_RXCSR_DATAERROR);
735 if (!epnum)
736 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
737 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
738
739 if (ep->status[1] == USB_RET_STALL) {
740 ep->status[1] = 0;
741 packey->len = 0;
742
743 ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
744 if (!epnum)
745 ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
746 }
747
748 if (ep->status[1] == USB_RET_NAK) {
749 ep->status[1] = 0;
750
751 /* NAK timeouts are only generated in Bulk transfers and
752 * Data-errors in Isochronous. */
753 if (ep->interrupt[1])
754 return musb_packet(s, ep, epnum, USB_TOKEN_IN,
755 packey->len, musb_rx_packet_complete, 1);
756
757 ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
758 if (!epnum)
759 ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
760 }
761
762 if (ep->status[1] < 0) {
763 if (ep->status[1] == USB_RET_BABBLE) {
764 musb_intr_set(s, musb_irq_rst_babble, 1);
765 return;
766 }
767
768 /* Pretend we've tried three times already and failed (in
769 * case of a control transfer). */
770 ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
771 if (!epnum)
772 ep->csr[0] |= MGC_M_CSR0_H_ERROR;
773
774 musb_rx_intr_set(s, epnum, 1);
775 return;
776 }
777 /* TODO: check len for over/underruns of an OUT packet? */
778 /* TODO: perhaps make use of e->ext_size[1] here. */
779
780 packey->len = ep->status[1];
781
782 if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) {
783 ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
784 if (!epnum)
785 ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
786
787 ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
788 /* In DMA mode: assert DMA request for this EP */
789 }
790
791 /* Only if DMA has not been asserted */
792 musb_rx_intr_set(s, epnum, 1);
793}
794
4706ab6c 795static void musb_async_cancel_device(MUSBState *s, USBDevice *dev)
07771f6f 796{
07771f6f
GH		 797 int ep, dir;
798
799 for (ep = 0; ep < 16; ep++) {
800 for (dir = 0; dir < 2; dir++) {
801 if (s->ep[ep].packey[dir].p.owner != dev) {
802 continue;
803 }
804 usb_cancel_packet(&s->ep[ep].packey[dir].p);
805 /* status updates needed here? */
806 }
807 }
808}
809
bc24a225 810static void musb_tx_rdy(MUSBState *s, int epnum)
942ac052 811{
bc24a225 812 MUSBEndPoint *ep = s->ep + epnum;
942ac052
AZ		 813 int pid;
814 int total, valid = 0;
384dce1e 815 TRACE("start %d, len %d", ep->fifostart[0], ep->fifolen[0] );
942ac052
AZ		 816 ep->fifostart[0] += ep->fifolen[0];
817 ep->fifolen[0] = 0;
818
819 /* XXX: how's the total size of the packet retrieved exactly in
820 * the generic case? */
821 total = ep->maxp[0] & 0x3ff;
822
823 if (ep->ext_size[0]) {
824 total = ep->ext_size[0];
825 ep->ext_size[0] = 0;
826 valid = 1;
827 }
828
829 /* If the packet is not fully ready yet, wait for a next segment. */
384dce1e 830 if (epnum && (ep->fifostart[0]) < total)
942ac052
AZ		 831 return;
832
833 if (!valid)
384dce1e 834 total = ep->fifostart[0];
942ac052
AZ		 835
836 pid = USB_TOKEN_OUT;
837 if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) {
838 pid = USB_TOKEN_SETUP;
384dce1e
RV		 839 if (total != 8) {
840 TRACE("illegal SETUPPKT length of %i bytes", total);
841 }
942ac052
AZ		 842 /* Controller should retry SETUP packets three times on errors
843 * but it doesn't make sense for us to do that. */
844 }
845
846 return musb_packet(s, ep, epnum, pid,
847 total, musb_tx_packet_complete, 0);
848}
849
bc24a225 850static void musb_rx_req(MUSBState *s, int epnum)
942ac052 851{
bc24a225 852 MUSBEndPoint *ep = s->ep + epnum;
942ac052
AZ		 853 int total;
854
855 /* If we already have a packet, which didn't fit into the
856 * 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
5dc1672b 857 if (ep->packey[1].p.pid == USB_TOKEN_IN && ep->status[1] >= 0 &&
384dce1e 858 (ep->fifostart[1]) + ep->rxcount <
5dc1672b 859 ep->packey[1].p.len) {
384dce1e
RV		 860 TRACE("0x%08x, %d", ep->fifostart[1], ep->rxcount );
861 ep->fifostart[1] += ep->rxcount;
942ac052
AZ		 862 ep->fifolen[1] = 0;
863
5dc1672b 864 ep->rxcount = MIN(ep->packey[0].p.len - (ep->fifostart[1]),
942ac052
AZ		 865 ep->maxp[1]);
866
867 ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
868 if (!epnum)
869 ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
870
871 /* Clear all of the error bits first */
872 ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
873 MGC_M_RXCSR_DATAERROR);
874 if (!epnum)
875 ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
876 MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
877
878 ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
879 if (!epnum)
880 ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
881 musb_rx_intr_set(s, epnum, 1);
882 return;
883 }
884
885 /* The driver sets maxp[1] to 64 or less because it knows the hardware
886 * FIFO is this deep. Bigger packets get split in
887 * usb_generic_handle_packet but we can also do the splitting locally
888 * for performance. It turns out we can also have a bigger FIFO and
889 * ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
890 * OK with single packets of even 32KB and we avoid splitting, however
891 * usb_msd.c sometimes sends a packet bigger than what Linux expects
892 * (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
893 * hides this overrun from Linux. Up to 4096 everything is fine
894 * though. Currently this is disabled.
895 *
896 * XXX: mind ep->fifosize. */
897 total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf));
898
899#ifdef SETUPLEN_HACK
900 /* Why should *we* do that instead of Linux? */
901 if (!epnum) {
5dc1672b 902 if (ep->packey[0].p.devaddr == 2) {
942ac052 903 total = MIN(s->setup_len, 8);
5dc1672b 904 } else {
942ac052 905 total = MIN(s->setup_len, 64);
5dc1672b 906 }
942ac052
AZ		 907 s->setup_len -= total;
908 }
909#endif
910
911 return musb_packet(s, ep, epnum, USB_TOKEN_IN,
912 total, musb_rx_packet_complete, 1);
913}
914
384dce1e
RV		 915static uint8_t musb_read_fifo(MUSBEndPoint *ep)
916{
917 uint8_t value;
918 if (ep->fifolen[1] >= 64) {
919 /* We have a FIFO underrun */
920 TRACE("EP%d FIFO is now empty, stop reading", ep->epnum);
921 return 0x00000000;
922 }
923 /* In DMA mode clear RXPKTRDY and set REQPKT automatically
924 * (if AUTOREQ is set) */
925
926 ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
927 value=ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++];
928 TRACE("EP%d 0x%02x, %d", ep->epnum, value, ep->fifolen[1] );
929 return value;
930}
931
932static void musb_write_fifo(MUSBEndPoint *ep, uint8_t value)
933{
934 TRACE("EP%d = %02x", ep->epnum, value);
935 if (ep->fifolen[0] >= 64) {
936 /* We have a FIFO overrun */
937 TRACE("EP%d FIFO exceeded 64 bytes, stop feeding data", ep->epnum);
938 return;
939 }
940
941 ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value;
942 ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
943}
944
bc24a225 945static void musb_ep_frame_cancel(MUSBEndPoint *ep, int dir)
942ac052
AZ		 946{
947 if (ep->intv_timer[dir])
948 qemu_del_timer(ep->intv_timer[dir]);
949}
950
951/* Bus control */
952static uint8_t musb_busctl_readb(void *opaque, int ep, int addr)
953{
bc24a225 954 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 955
956 switch (addr) {
957 /* For USB2.0 HS hubs only */
958 case MUSB_HDRC_TXHUBADDR:
959 return s->ep[ep].haddr[0];
960 case MUSB_HDRC_TXHUBPORT:
961 return s->ep[ep].hport[0];
962 case MUSB_HDRC_RXHUBADDR:
963 return s->ep[ep].haddr[1];
964 case MUSB_HDRC_RXHUBPORT:
965 return s->ep[ep].hport[1];
966
967 default:
384dce1e 968 TRACE("unknown register 0x%02x", addr);
942ac052
AZ		 969 return 0x00;
970 };
971}
972
973static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value)
974{
bc24a225 975 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 976
977 switch (addr) {
384dce1e
RV		 978 case MUSB_HDRC_TXFUNCADDR:
979 s->ep[ep].faddr[0] = value;
980 break;
981 case MUSB_HDRC_RXFUNCADDR:
982 s->ep[ep].faddr[1] = value;
983 break;
942ac052
AZ		 984 case MUSB_HDRC_TXHUBADDR:
985 s->ep[ep].haddr[0] = value;
986 break;
987 case MUSB_HDRC_TXHUBPORT:
988 s->ep[ep].hport[0] = value;
989 break;
990 case MUSB_HDRC_RXHUBADDR:
991 s->ep[ep].haddr[1] = value;
992 break;
993 case MUSB_HDRC_RXHUBPORT:
994 s->ep[ep].hport[1] = value;
995 break;
996
997 default:
384dce1e
RV		 998 TRACE("unknown register 0x%02x", addr);
999 break;
942ac052
AZ		 1000 };
1001}
1002
1003static uint16_t musb_busctl_readh(void *opaque, int ep, int addr)
1004{
bc24a225 1005 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1006
1007 switch (addr) {
1008 case MUSB_HDRC_TXFUNCADDR:
1009 return s->ep[ep].faddr[0];
1010 case MUSB_HDRC_RXFUNCADDR:
1011 return s->ep[ep].faddr[1];
1012
1013 default:
1014 return musb_busctl_readb(s, ep, addr) |
1015 (musb_busctl_readb(s, ep, addr | 1) << 8);
1016 };
1017}
1018
1019static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value)
1020{
bc24a225 1021 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1022
1023 switch (addr) {
1024 case MUSB_HDRC_TXFUNCADDR:
1025 s->ep[ep].faddr[0] = value;
1026 break;
1027 case MUSB_HDRC_RXFUNCADDR:
1028 s->ep[ep].faddr[1] = value;
1029 break;
1030
1031 default:
1032 musb_busctl_writeb(s, ep, addr, value & 0xff);
1033 musb_busctl_writeb(s, ep, addr | 1, value >> 8);
1034 };
1035}
1036
1037/* Endpoint control */
1038static uint8_t musb_ep_readb(void *opaque, int ep, int addr)
1039{
bc24a225 1040 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1041
1042 switch (addr) {
1043 case MUSB_HDRC_TXTYPE:
1044 return s->ep[ep].type[0];
1045 case MUSB_HDRC_TXINTERVAL:
1046 return s->ep[ep].interval[0];
1047 case MUSB_HDRC_RXTYPE:
1048 return s->ep[ep].type[1];
1049 case MUSB_HDRC_RXINTERVAL:
1050 return s->ep[ep].interval[1];
1051 case (MUSB_HDRC_FIFOSIZE & ~1):
1052 return 0x00;
1053 case MUSB_HDRC_FIFOSIZE:
1054 return ep ? s->ep[ep].fifosize : s->ep[ep].config;
384dce1e
RV		 1055 case MUSB_HDRC_RXCOUNT:
1056 return s->ep[ep].rxcount;
942ac052
AZ		 1057
1058 default:
384dce1e 1059 TRACE("unknown register 0x%02x", addr);
942ac052
AZ		 1060 return 0x00;
1061 };
1062}
1063
1064static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value)
1065{
bc24a225 1066 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1067
1068 switch (addr) {
1069 case MUSB_HDRC_TXTYPE:
1070 s->ep[ep].type[0] = value;
1071 break;
1072 case MUSB_HDRC_TXINTERVAL:
1073 s->ep[ep].interval[0] = value;
1074 musb_ep_frame_cancel(&s->ep[ep], 0);
1075 break;
1076 case MUSB_HDRC_RXTYPE:
1077 s->ep[ep].type[1] = value;
1078 break;
1079 case MUSB_HDRC_RXINTERVAL:
1080 s->ep[ep].interval[1] = value;
1081 musb_ep_frame_cancel(&s->ep[ep], 1);
1082 break;
1083 case (MUSB_HDRC_FIFOSIZE & ~1):
1084 break;
1085 case MUSB_HDRC_FIFOSIZE:
384dce1e 1086 TRACE("somebody messes with fifosize (now %i bytes)", value);
942ac052
AZ		 1087 s->ep[ep].fifosize = value;
1088 break;
942ac052 1089 default:
384dce1e
RV		 1090 TRACE("unknown register 0x%02x", addr);
1091 break;
942ac052
AZ		 1092 };
1093}
1094
1095static uint16_t musb_ep_readh(void *opaque, int ep, int addr)
1096{
bc24a225 1097 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1098 uint16_t ret;
1099
1100 switch (addr) {
1101 case MUSB_HDRC_TXMAXP:
1102 return s->ep[ep].maxp[0];
1103 case MUSB_HDRC_TXCSR:
1104 return s->ep[ep].csr[0];
1105 case MUSB_HDRC_RXMAXP:
1106 return s->ep[ep].maxp[1];
1107 case MUSB_HDRC_RXCSR:
1108 ret = s->ep[ep].csr[1];
1109
1110 /* TODO: This and other bits probably depend on
1111 * ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
1112 if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR)
1113 s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
1114
1115 return ret;
1116 case MUSB_HDRC_RXCOUNT:
1117 return s->ep[ep].rxcount;
1118
1119 default:
1120 return musb_ep_readb(s, ep, addr) |
1121 (musb_ep_readb(s, ep, addr | 1) << 8);
1122 };
1123}
1124
1125static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value)
1126{
bc24a225 1127 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1128
1129 switch (addr) {
1130 case MUSB_HDRC_TXMAXP:
1131 s->ep[ep].maxp[0] = value;
1132 break;
1133 case MUSB_HDRC_TXCSR:
1134 if (ep) {
1135 s->ep[ep].csr[0] &= value & 0xa6;
1136 s->ep[ep].csr[0] |= value & 0xff59;
1137 } else {
1138 s->ep[ep].csr[0] &= value & 0x85;
1139 s->ep[ep].csr[0] |= value & 0xf7a;
1140 }
1141
1142 musb_ep_frame_cancel(&s->ep[ep], 0);
1143
1144 if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
1145 (!ep && (value & MGC_M_CSR0_FLUSHFIFO))) {
1146 s->ep[ep].fifolen[0] = 0;
1147 s->ep[ep].fifostart[0] = 0;
1148 if (ep)
1149 s->ep[ep].csr[0] &=
1150 ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
1151 else
1152 s->ep[ep].csr[0] &=
1153 ~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY);
1154 }
1155 if (
1156 (ep &&
1157#ifdef CLEAR_NAK
1158 (value & MGC_M_TXCSR_TXPKTRDY) &&
1159 !(value & MGC_M_TXCSR_H_NAKTIMEOUT)) ||
1160#else
1161 (value & MGC_M_TXCSR_TXPKTRDY)) ||
1162#endif
1163 (!ep &&
1164#ifdef CLEAR_NAK
1165 (value & MGC_M_CSR0_TXPKTRDY) &&
1166 !(value & MGC_M_CSR0_H_NAKTIMEOUT)))
1167#else
1168 (value & MGC_M_CSR0_TXPKTRDY)))
1169#endif
1170 musb_tx_rdy(s, ep);
1171 if (!ep &&
1172 (value & MGC_M_CSR0_H_REQPKT) &&
1173#ifdef CLEAR_NAK
1174 !(value & (MGC_M_CSR0_H_NAKTIMEOUT |
1175 MGC_M_CSR0_RXPKTRDY)))
1176#else
1177 !(value & MGC_M_CSR0_RXPKTRDY))
1178#endif
1179 musb_rx_req(s, ep);
1180 break;
1181
1182 case MUSB_HDRC_RXMAXP:
1183 s->ep[ep].maxp[1] = value;
1184 break;
1185 case MUSB_HDRC_RXCSR:
1186 /* (DMA mode only) */
1187 if (
1188 (value & MGC_M_RXCSR_H_AUTOREQ) &&
1189 !(value & MGC_M_RXCSR_RXPKTRDY) &&
1190 (s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
1191 value |= MGC_M_RXCSR_H_REQPKT;
1192
1193 s->ep[ep].csr[1] &= 0x102 | (value & 0x4d);
1194 s->ep[ep].csr[1] |= value & 0xfeb0;
1195
1196 musb_ep_frame_cancel(&s->ep[ep], 1);
1197
1198 if (value & MGC_M_RXCSR_FLUSHFIFO) {
1199 s->ep[ep].fifolen[1] = 0;
1200 s->ep[ep].fifostart[1] = 0;
1201 s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
1202 /* If double buffering and we have two packets ready, flush
1203 * only the first one and set up the fifo at the second packet. */
1204 }
1205#ifdef CLEAR_NAK
1206 if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
1207#else
1208 if (value & MGC_M_RXCSR_H_REQPKT)
1209#endif
1210 musb_rx_req(s, ep);
1211 break;
1212 case MUSB_HDRC_RXCOUNT:
1213 s->ep[ep].rxcount = value;
1214 break;
1215
1216 default:
1217 musb_ep_writeb(s, ep, addr, value & 0xff);
1218 musb_ep_writeb(s, ep, addr | 1, value >> 8);
1219 };
1220}
1221
1222/* Generic control */
c227f099 1223static uint32_t musb_readb(void *opaque, target_phys_addr_t addr)
942ac052 1224{
bc24a225 1225 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1226 int ep, i;
1227 uint8_t ret;
1228
1229 switch (addr) {
1230 case MUSB_HDRC_FADDR:
1231 return s->faddr;
1232 case MUSB_HDRC_POWER:
1233 return s->power;
1234 case MUSB_HDRC_INTRUSB:
1235 ret = s->intr;
1236 for (i = 0; i < sizeof(ret) * 8; i ++)
1237 if (ret & (1 << i))
1238 musb_intr_set(s, i, 0);
1239 return ret;
1240 case MUSB_HDRC_INTRUSBE:
1241 return s->mask;
1242 case MUSB_HDRC_INDEX:
1243 return s->idx;
1244 case MUSB_HDRC_TESTMODE:
1245 return 0x00;
1246
1247 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1248 return musb_ep_readb(s, s->idx, addr & 0xf);
1249
1250 case MUSB_HDRC_DEVCTL:
1251 return s->devctl;
1252
1253 case MUSB_HDRC_TXFIFOSZ:
1254 case MUSB_HDRC_RXFIFOSZ:
1255 case MUSB_HDRC_VCTRL:
1256 /* TODO */
1257 return 0x00;
1258
1259 case MUSB_HDRC_HWVERS:
1260 return (1 << 10) | 400;
1261
1262 case (MUSB_HDRC_VCTRL | 1):
1263 case (MUSB_HDRC_HWVERS | 1):
1264 case (MUSB_HDRC_DEVCTL | 1):
1265 return 0x00;
1266
1267 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1268 ep = (addr >> 3) & 0xf;
1269 return musb_busctl_readb(s, ep, addr & 0x7);
1270
1271 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1272 ep = (addr >> 4) & 0xf;
1273 return musb_ep_readb(s, ep, addr & 0xf);
1274
384dce1e
RV		 1275 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1276 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1277 return musb_read_fifo(s->ep + ep);
1278
942ac052 1279 default:
384dce1e 1280 TRACE("unknown register 0x%02x", (int) addr);
942ac052
AZ		 1281 return 0x00;
1282 };
1283}
1284
c227f099 1285static void musb_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
942ac052 1286{
bc24a225 1287 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1288 int ep;
1289
1290 switch (addr) {
1291 case MUSB_HDRC_FADDR:
1292 s->faddr = value & 0x7f;
1293 break;
1294 case MUSB_HDRC_POWER:
1295 s->power = (value & 0xef) | (s->power & 0x10);
1296 /* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
1297 if ((value & MGC_M_POWER_RESET) && s->port.dev) {
1298 usb_send_msg(s->port.dev, USB_MSG_RESET);
1299 /* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
1300 if ((value & MGC_M_POWER_HSENAB) &&
1301 s->port.dev->speed == USB_SPEED_HIGH)
1302 s->power |= MGC_M_POWER_HSMODE; /* Success */
1303 /* Restart frame counting. */
1304 }
1305 if (value & MGC_M_POWER_SUSPENDM) {
1306 /* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
1307 * is set, also go into low power mode. Frame counting stops. */
1308 /* XXX: Cleared when the interrupt register is read */
1309 }
1310 if (value & MGC_M_POWER_RESUME) {
1311 /* Wait 20ms and signal resuming on the bus. Frame counting
1312 * restarts. */
1313 }
1314 break;
1315 case MUSB_HDRC_INTRUSB:
1316 break;
1317 case MUSB_HDRC_INTRUSBE:
1318 s->mask = value & 0xff;
1319 break;
1320 case MUSB_HDRC_INDEX:
1321 s->idx = value & 0xf;
1322 break;
1323 case MUSB_HDRC_TESTMODE:
1324 break;
1325
1326 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1327 musb_ep_writeb(s, s->idx, addr & 0xf, value);
1328 break;
1329
1330 case MUSB_HDRC_DEVCTL:
1331 s->session = !!(value & MGC_M_DEVCTL_SESSION);
1332 musb_session_update(s,
1333 !!s->port.dev,
1334 !!(s->devctl & MGC_M_DEVCTL_SESSION));
1335
1336 /* It seems this is the only R/W bit in this register? */
1337 s->devctl &= ~MGC_M_DEVCTL_SESSION;
1338 s->devctl |= value & MGC_M_DEVCTL_SESSION;
1339 break;
1340
1341 case MUSB_HDRC_TXFIFOSZ:
1342 case MUSB_HDRC_RXFIFOSZ:
1343 case MUSB_HDRC_VCTRL:
1344 /* TODO */
1345 break;
1346
1347 case (MUSB_HDRC_VCTRL | 1):
1348 case (MUSB_HDRC_DEVCTL | 1):
1349 break;
1350
1351 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1352 ep = (addr >> 3) & 0xf;
1353 musb_busctl_writeb(s, ep, addr & 0x7, value);
1354 break;
1355
1356 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1357 ep = (addr >> 4) & 0xf;
1358 musb_ep_writeb(s, ep, addr & 0xf, value);
1359 break;
1360
384dce1e
RV		 1361 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1362 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1363 musb_write_fifo(s->ep + ep, value & 0xff);
1364 break;
1365
942ac052 1366 default:
384dce1e
RV		 1367 TRACE("unknown register 0x%02x", (int) addr);
1368 break;
942ac052
AZ		 1369 };
1370}
1371
c227f099 1372static uint32_t musb_readh(void *opaque, target_phys_addr_t addr)
942ac052 1373{
bc24a225 1374 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1375 int ep, i;
1376 uint16_t ret;
1377
1378 switch (addr) {
1379 case MUSB_HDRC_INTRTX:
1380 ret = s->tx_intr;
1381 /* Auto clear */
1382 for (i = 0; i < sizeof(ret) * 8; i ++)
1383 if (ret & (1 << i))
1384 musb_tx_intr_set(s, i, 0);
1385 return ret;
1386 case MUSB_HDRC_INTRRX:
1387 ret = s->rx_intr;
1388 /* Auto clear */
1389 for (i = 0; i < sizeof(ret) * 8; i ++)
1390 if (ret & (1 << i))
1391 musb_rx_intr_set(s, i, 0);
1392 return ret;
1393 case MUSB_HDRC_INTRTXE:
1394 return s->tx_mask;
1395 case MUSB_HDRC_INTRRXE:
1396 return s->rx_mask;
1397
1398 case MUSB_HDRC_FRAME:
1399 /* TODO */
1400 return 0x0000;
1401 case MUSB_HDRC_TXFIFOADDR:
1402 return s->ep[s->idx].fifoaddr[0];
1403 case MUSB_HDRC_RXFIFOADDR:
1404 return s->ep[s->idx].fifoaddr[1];
1405
1406 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1407 return musb_ep_readh(s, s->idx, addr & 0xf);
1408
1409 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1410 ep = (addr >> 3) & 0xf;
1411 return musb_busctl_readh(s, ep, addr & 0x7);
1412
1413 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1414 ep = (addr >> 4) & 0xf;
1415 return musb_ep_readh(s, ep, addr & 0xf);
1416
384dce1e
RV		 1417 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1418 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1419 return (musb_read_fifo(s->ep + ep) | musb_read_fifo(s->ep + ep) << 8);
1420
942ac052
AZ		 1421 default:
1422 return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8);
1423 };
1424}
1425
c227f099 1426static void musb_writeh(void *opaque, target_phys_addr_t addr, uint32_t value)
942ac052 1427{
bc24a225 1428 MUSBState *s = (MUSBState *) opaque;
942ac052
AZ		 1429 int ep;
1430
1431 switch (addr) {
1432 case MUSB_HDRC_INTRTXE:
1433 s->tx_mask = value;
1434 /* XXX: the masks seem to apply on the raising edge like with
1435 * edge-triggered interrupts, thus no need to update. I may be
1436 * wrong though. */
1437 break;
1438 case MUSB_HDRC_INTRRXE:
1439 s->rx_mask = value;
1440 break;
1441
1442 case MUSB_HDRC_FRAME:
1443 /* TODO */
1444 break;
1445 case MUSB_HDRC_TXFIFOADDR:
1446 s->ep[s->idx].fifoaddr[0] = value;
1447 s->ep[s->idx].buf[0] =
384dce1e 1448 s->buf + ((value << 3) & 0x7ff );
942ac052
AZ		 1449 break;
1450 case MUSB_HDRC_RXFIFOADDR:
1451 s->ep[s->idx].fifoaddr[1] = value;
1452 s->ep[s->idx].buf[1] =
384dce1e 1453 s->buf + ((value << 3) & 0x7ff);
942ac052
AZ		 1454 break;
1455
1456 case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
1457 musb_ep_writeh(s, s->idx, addr & 0xf, value);
1458 break;
1459
1460 case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
1461 ep = (addr >> 3) & 0xf;
1462 musb_busctl_writeh(s, ep, addr & 0x7, value);
1463 break;
1464
1465 case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
1466 ep = (addr >> 4) & 0xf;
1467 musb_ep_writeh(s, ep, addr & 0xf, value);
1468 break;
1469
384dce1e
RV		 1470 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
1471 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1472 musb_write_fifo(s->ep + ep, value & 0xff);
1473 musb_write_fifo(s->ep + ep, (value >> 8) & 0xff);
1474 break;
1475
942ac052
AZ		 1476 default:
1477 musb_writeb(s, addr, value & 0xff);
1478 musb_writeb(s, addr | 1, value >> 8);
1479 };
1480}
1481
c227f099 1482static uint32_t musb_readw(void *opaque, target_phys_addr_t addr)
942ac052 1483{
bc24a225 1484 MUSBState *s = (MUSBState *) opaque;
384dce1e 1485 int ep;
942ac052
AZ		 1486
1487 switch (addr) {
1488 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
384dce1e
RV		 1489 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1490 return ( musb_read_fifo(s->ep + ep) |
1491 musb_read_fifo(s->ep + ep) << 8 |
1492 musb_read_fifo(s->ep + ep) << 16 |
1493 musb_read_fifo(s->ep + ep) << 24 );
942ac052 1494 default:
384dce1e 1495 TRACE("unknown register 0x%02x", (int) addr);
942ac052
AZ		 1496 return 0x00000000;
1497 };
1498}
1499
c227f099 1500static void musb_writew(void *opaque, target_phys_addr_t addr, uint32_t value)
942ac052 1501{
bc24a225 1502 MUSBState *s = (MUSBState *) opaque;
384dce1e 1503 int ep;
942ac052
AZ		 1504
1505 switch (addr) {
1506 case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
384dce1e
RV		 1507 ep = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
1508 musb_write_fifo(s->ep + ep, value & 0xff);
1509 musb_write_fifo(s->ep + ep, (value >> 8 ) & 0xff);
1510 musb_write_fifo(s->ep + ep, (value >> 16) & 0xff);
1511 musb_write_fifo(s->ep + ep, (value >> 24) & 0xff);
942ac052 1512 break;
942ac052 1513 default:
384dce1e
RV		 1514 TRACE("unknown register 0x%02x", (int) addr);
1515 break;
942ac052
AZ		 1516 };
1517}
1518
d60efc6b 1519CPUReadMemoryFunc * const musb_read[] = {
942ac052
AZ		 1520 musb_readb,
1521 musb_readh,
1522 musb_readw,
1523};
1524
d60efc6b 1525CPUWriteMemoryFunc * const musb_write[] = {
942ac052
AZ		 1526 musb_writeb,
1527 musb_writeh,
1528 musb_writew,
1529};
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