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usb: dwc2: usb chunk_msg() for control transfers too
[people/ms/u-boot.git] / drivers / usb / host / dwc2.c
1 /*
2 * Copyright (C) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * Copyright (C) 2014 Marek Vasut <marex@denx.de>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <errno.h>
10 #include <usb.h>
11 #include <malloc.h>
12 #include <usbroothubdes.h>
13 #include <asm/io.h>
14
15 #include "dwc2.h"
16
17 /* Use only HC channel 0. */
18 #define DWC2_HC_CHANNEL 0
19
20 #define DWC2_STATUS_BUF_SIZE 64
21 #define DWC2_DATA_BUF_SIZE (64 * 1024)
22
23 /* We need doubleword-aligned buffers for DMA transfers */
24 DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer, DWC2_DATA_BUF_SIZE, 8);
25 DEFINE_ALIGN_BUFFER(uint8_t, status_buffer, DWC2_STATUS_BUF_SIZE, 8);
26
27 #define MAX_DEVICE 16
28 #define MAX_ENDPOINT 16
29 static int bulk_data_toggle[MAX_DEVICE][MAX_ENDPOINT];
30 static int control_data_toggle[MAX_DEVICE][MAX_ENDPOINT];
31
32 static int root_hub_devnum;
33
34 static struct dwc2_core_regs *regs =
35 (struct dwc2_core_regs *)CONFIG_USB_DWC2_REG_ADDR;
36
37 /*
38 * DWC2 IP interface
39 */
40 static int wait_for_bit(void *reg, const uint32_t mask, bool set)
41 {
42 unsigned int timeout = 1000000;
43 uint32_t val;
44
45 while (--timeout) {
46 val = readl(reg);
47 if (!set)
48 val = ~val;
49
50 if ((val & mask) == mask)
51 return 0;
52
53 udelay(1);
54 }
55
56 debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
57 __func__, reg, mask, set);
58
59 return -ETIMEDOUT;
60 }
61
62 /*
63 * Initializes the FSLSPClkSel field of the HCFG register
64 * depending on the PHY type.
65 */
66 static void init_fslspclksel(struct dwc2_core_regs *regs)
67 {
68 uint32_t phyclk;
69
70 #if (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
71 phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */
72 #else
73 /* High speed PHY running at full speed or high speed */
74 phyclk = DWC2_HCFG_FSLSPCLKSEL_30_60_MHZ;
75 #endif
76
77 #ifdef CONFIG_DWC2_ULPI_FS_LS
78 uint32_t hwcfg2 = readl(&regs->ghwcfg2);
79 uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >>
80 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET;
81 uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >>
82 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET;
83
84 if (hval == 2 && fval == 1)
85 phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */
86 #endif
87
88 clrsetbits_le32(&regs->host_regs.hcfg,
89 DWC2_HCFG_FSLSPCLKSEL_MASK,
90 phyclk << DWC2_HCFG_FSLSPCLKSEL_OFFSET);
91 }
92
93 /*
94 * Flush a Tx FIFO.
95 *
96 * @param regs Programming view of DWC_otg controller.
97 * @param num Tx FIFO to flush.
98 */
99 static void dwc_otg_flush_tx_fifo(struct dwc2_core_regs *regs, const int num)
100 {
101 int ret;
102
103 writel(DWC2_GRSTCTL_TXFFLSH | (num << DWC2_GRSTCTL_TXFNUM_OFFSET),
104 &regs->grstctl);
105 ret = wait_for_bit(&regs->grstctl, DWC2_GRSTCTL_TXFFLSH, 0);
106 if (ret)
107 printf("%s: Timeout!\n", __func__);
108
109 /* Wait for 3 PHY Clocks */
110 udelay(1);
111 }
112
113 /*
114 * Flush Rx FIFO.
115 *
116 * @param regs Programming view of DWC_otg controller.
117 */
118 static void dwc_otg_flush_rx_fifo(struct dwc2_core_regs *regs)
119 {
120 int ret;
121
122 writel(DWC2_GRSTCTL_RXFFLSH, &regs->grstctl);
123 ret = wait_for_bit(&regs->grstctl, DWC2_GRSTCTL_RXFFLSH, 0);
124 if (ret)
125 printf("%s: Timeout!\n", __func__);
126
127 /* Wait for 3 PHY Clocks */
128 udelay(1);
129 }
130
131 /*
132 * Do core a soft reset of the core. Be careful with this because it
133 * resets all the internal state machines of the core.
134 */
135 static void dwc_otg_core_reset(struct dwc2_core_regs *regs)
136 {
137 int ret;
138
139 /* Wait for AHB master IDLE state. */
140 ret = wait_for_bit(&regs->grstctl, DWC2_GRSTCTL_AHBIDLE, 1);
141 if (ret)
142 printf("%s: Timeout!\n", __func__);
143
144 /* Core Soft Reset */
145 writel(DWC2_GRSTCTL_CSFTRST, &regs->grstctl);
146 ret = wait_for_bit(&regs->grstctl, DWC2_GRSTCTL_CSFTRST, 0);
147 if (ret)
148 printf("%s: Timeout!\n", __func__);
149
150 /*
151 * Wait for core to come out of reset.
152 * NOTE: This long sleep is _very_ important, otherwise the core will
153 * not stay in host mode after a connector ID change!
154 */
155 mdelay(100);
156 }
157
158 /*
159 * This function initializes the DWC_otg controller registers for
160 * host mode.
161 *
162 * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
163 * request queues. Host channels are reset to ensure that they are ready for
164 * performing transfers.
165 *
166 * @param regs Programming view of DWC_otg controller
167 *
168 */
169 static void dwc_otg_core_host_init(struct dwc2_core_regs *regs)
170 {
171 uint32_t nptxfifosize = 0;
172 uint32_t ptxfifosize = 0;
173 uint32_t hprt0 = 0;
174 int i, ret, num_channels;
175
176 /* Restart the Phy Clock */
177 writel(0, &regs->pcgcctl);
178
179 /* Initialize Host Configuration Register */
180 init_fslspclksel(regs);
181 #ifdef CONFIG_DWC2_DFLT_SPEED_FULL
182 setbits_le32(&regs->host_regs.hcfg, DWC2_HCFG_FSLSSUPP);
183 #endif
184
185 /* Configure data FIFO sizes */
186 #ifdef CONFIG_DWC2_ENABLE_DYNAMIC_FIFO
187 if (readl(&regs->ghwcfg2) & DWC2_HWCFG2_DYNAMIC_FIFO) {
188 /* Rx FIFO */
189 writel(CONFIG_DWC2_HOST_RX_FIFO_SIZE, &regs->grxfsiz);
190
191 /* Non-periodic Tx FIFO */
192 nptxfifosize |= CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE <<
193 DWC2_FIFOSIZE_DEPTH_OFFSET;
194 nptxfifosize |= CONFIG_DWC2_HOST_RX_FIFO_SIZE <<
195 DWC2_FIFOSIZE_STARTADDR_OFFSET;
196 writel(nptxfifosize, &regs->gnptxfsiz);
197
198 /* Periodic Tx FIFO */
199 ptxfifosize |= CONFIG_DWC2_HOST_PERIO_TX_FIFO_SIZE <<
200 DWC2_FIFOSIZE_DEPTH_OFFSET;
201 ptxfifosize |= (CONFIG_DWC2_HOST_RX_FIFO_SIZE +
202 CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE) <<
203 DWC2_FIFOSIZE_STARTADDR_OFFSET;
204 writel(ptxfifosize, &regs->hptxfsiz);
205 }
206 #endif
207
208 /* Clear Host Set HNP Enable in the OTG Control Register */
209 clrbits_le32(&regs->gotgctl, DWC2_GOTGCTL_HSTSETHNPEN);
210
211 /* Make sure the FIFOs are flushed. */
212 dwc_otg_flush_tx_fifo(regs, 0x10); /* All Tx FIFOs */
213 dwc_otg_flush_rx_fifo(regs);
214
215 /* Flush out any leftover queued requests. */
216 num_channels = readl(&regs->ghwcfg2);
217 num_channels &= DWC2_HWCFG2_NUM_HOST_CHAN_MASK;
218 num_channels >>= DWC2_HWCFG2_NUM_HOST_CHAN_OFFSET;
219 num_channels += 1;
220
221 for (i = 0; i < num_channels; i++)
222 clrsetbits_le32(&regs->hc_regs[i].hcchar,
223 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_EPDIR,
224 DWC2_HCCHAR_CHDIS);
225
226 /* Halt all channels to put them into a known state. */
227 for (i = 0; i < num_channels; i++) {
228 clrsetbits_le32(&regs->hc_regs[i].hcchar,
229 DWC2_HCCHAR_EPDIR,
230 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS);
231 ret = wait_for_bit(&regs->hc_regs[i].hcchar,
232 DWC2_HCCHAR_CHEN, 0);
233 if (ret)
234 printf("%s: Timeout!\n", __func__);
235 }
236
237 /* Turn on the vbus power. */
238 if (readl(&regs->gintsts) & DWC2_GINTSTS_CURMODE_HOST) {
239 hprt0 = readl(&regs->hprt0);
240 hprt0 &= ~(DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET);
241 hprt0 &= ~(DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG);
242 if (!(hprt0 & DWC2_HPRT0_PRTPWR)) {
243 hprt0 |= DWC2_HPRT0_PRTPWR;
244 writel(hprt0, &regs->hprt0);
245 }
246 }
247 }
248
249 /*
250 * This function initializes the DWC_otg controller registers and
251 * prepares the core for device mode or host mode operation.
252 *
253 * @param regs Programming view of the DWC_otg controller
254 */
255 static void dwc_otg_core_init(struct dwc2_core_regs *regs)
256 {
257 uint32_t ahbcfg = 0;
258 uint32_t usbcfg = 0;
259 uint8_t brst_sz = CONFIG_DWC2_DMA_BURST_SIZE;
260
261 /* Common Initialization */
262 usbcfg = readl(&regs->gusbcfg);
263
264 /* Program the ULPI External VBUS bit if needed */
265 #ifdef CONFIG_DWC2_PHY_ULPI_EXT_VBUS
266 usbcfg |= DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV;
267 #else
268 usbcfg &= ~DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV;
269 #endif
270
271 /* Set external TS Dline pulsing */
272 #ifdef CONFIG_DWC2_TS_DLINE
273 usbcfg |= DWC2_GUSBCFG_TERM_SEL_DL_PULSE;
274 #else
275 usbcfg &= ~DWC2_GUSBCFG_TERM_SEL_DL_PULSE;
276 #endif
277 writel(usbcfg, &regs->gusbcfg);
278
279 /* Reset the Controller */
280 dwc_otg_core_reset(regs);
281
282 /*
283 * This programming sequence needs to happen in FS mode before
284 * any other programming occurs
285 */
286 #if defined(CONFIG_DWC2_DFLT_SPEED_FULL) && \
287 (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
288 /* If FS mode with FS PHY */
289 setbits_le32(&regs->gusbcfg, DWC2_GUSBCFG_PHYSEL);
290
291 /* Reset after a PHY select */
292 dwc_otg_core_reset(regs);
293
294 /*
295 * Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.
296 * Also do this on HNP Dev/Host mode switches (done in dev_init
297 * and host_init).
298 */
299 if (readl(&regs->gintsts) & DWC2_GINTSTS_CURMODE_HOST)
300 init_fslspclksel(regs);
301
302 #ifdef CONFIG_DWC2_I2C_ENABLE
303 /* Program GUSBCFG.OtgUtmifsSel to I2C */
304 setbits_le32(&regs->gusbcfg, DWC2_GUSBCFG_OTGUTMIFSSEL);
305
306 /* Program GI2CCTL.I2CEn */
307 clrsetbits_le32(&regs->gi2cctl, DWC2_GI2CCTL_I2CEN |
308 DWC2_GI2CCTL_I2CDEVADDR_MASK,
309 1 << DWC2_GI2CCTL_I2CDEVADDR_OFFSET);
310 setbits_le32(&regs->gi2cctl, DWC2_GI2CCTL_I2CEN);
311 #endif
312
313 #else
314 /* High speed PHY. */
315
316 /*
317 * HS PHY parameters. These parameters are preserved during
318 * soft reset so only program the first time. Do a soft reset
319 * immediately after setting phyif.
320 */
321 usbcfg &= ~(DWC2_GUSBCFG_ULPI_UTMI_SEL | DWC2_GUSBCFG_PHYIF);
322 usbcfg |= CONFIG_DWC2_PHY_TYPE << DWC2_GUSBCFG_ULPI_UTMI_SEL_OFFSET;
323
324 if (usbcfg & DWC2_GUSBCFG_ULPI_UTMI_SEL) { /* ULPI interface */
325 #ifdef CONFIG_DWC2_PHY_ULPI_DDR
326 usbcfg |= DWC2_GUSBCFG_DDRSEL;
327 #else
328 usbcfg &= ~DWC2_GUSBCFG_DDRSEL;
329 #endif
330 } else { /* UTMI+ interface */
331 #if (CONFIG_DWC2_UTMI_PHY_WIDTH == 16)
332 usbcfg |= DWC2_GUSBCFG_PHYIF;
333 #endif
334 }
335
336 writel(usbcfg, &regs->gusbcfg);
337
338 /* Reset after setting the PHY parameters */
339 dwc_otg_core_reset(regs);
340 #endif
341
342 usbcfg = readl(&regs->gusbcfg);
343 usbcfg &= ~(DWC2_GUSBCFG_ULPI_FSLS | DWC2_GUSBCFG_ULPI_CLK_SUS_M);
344 #ifdef CONFIG_DWC2_ULPI_FS_LS
345 uint32_t hwcfg2 = readl(&regs->ghwcfg2);
346 uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >>
347 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET;
348 uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >>
349 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET;
350 if (hval == 2 && fval == 1) {
351 usbcfg |= DWC2_GUSBCFG_ULPI_FSLS;
352 usbcfg |= DWC2_GUSBCFG_ULPI_CLK_SUS_M;
353 }
354 #endif
355 writel(usbcfg, &regs->gusbcfg);
356
357 /* Program the GAHBCFG Register. */
358 switch (readl(&regs->ghwcfg2) & DWC2_HWCFG2_ARCHITECTURE_MASK) {
359 case DWC2_HWCFG2_ARCHITECTURE_SLAVE_ONLY:
360 break;
361 case DWC2_HWCFG2_ARCHITECTURE_EXT_DMA:
362 while (brst_sz > 1) {
363 ahbcfg |= ahbcfg + (1 << DWC2_GAHBCFG_HBURSTLEN_OFFSET);
364 ahbcfg &= DWC2_GAHBCFG_HBURSTLEN_MASK;
365 brst_sz >>= 1;
366 }
367
368 #ifdef CONFIG_DWC2_DMA_ENABLE
369 ahbcfg |= DWC2_GAHBCFG_DMAENABLE;
370 #endif
371 break;
372
373 case DWC2_HWCFG2_ARCHITECTURE_INT_DMA:
374 ahbcfg |= DWC2_GAHBCFG_HBURSTLEN_INCR4;
375 #ifdef CONFIG_DWC2_DMA_ENABLE
376 ahbcfg |= DWC2_GAHBCFG_DMAENABLE;
377 #endif
378 break;
379 }
380
381 writel(ahbcfg, &regs->gahbcfg);
382
383 /* Program the GUSBCFG register for HNP/SRP. */
384 setbits_le32(&regs->gusbcfg, DWC2_GUSBCFG_HNPCAP | DWC2_GUSBCFG_SRPCAP);
385
386 #ifdef CONFIG_DWC2_IC_USB_CAP
387 setbits_le32(&regs->gusbcfg, DWC2_GUSBCFG_IC_USB_CAP);
388 #endif
389 }
390
391 /*
392 * Prepares a host channel for transferring packets to/from a specific
393 * endpoint. The HCCHARn register is set up with the characteristics specified
394 * in _hc. Host channel interrupts that may need to be serviced while this
395 * transfer is in progress are enabled.
396 *
397 * @param regs Programming view of DWC_otg controller
398 * @param hc Information needed to initialize the host channel
399 */
400 static void dwc_otg_hc_init(struct dwc2_core_regs *regs, uint8_t hc_num,
401 uint8_t dev_addr, uint8_t ep_num, uint8_t ep_is_in,
402 uint8_t ep_type, uint16_t max_packet)
403 {
404 struct dwc2_hc_regs *hc_regs = &regs->hc_regs[hc_num];
405 const uint32_t hcchar = (dev_addr << DWC2_HCCHAR_DEVADDR_OFFSET) |
406 (ep_num << DWC2_HCCHAR_EPNUM_OFFSET) |
407 (ep_is_in << DWC2_HCCHAR_EPDIR_OFFSET) |
408 (ep_type << DWC2_HCCHAR_EPTYPE_OFFSET) |
409 (max_packet << DWC2_HCCHAR_MPS_OFFSET);
410
411 /* Clear old interrupt conditions for this host channel. */
412 writel(0x3fff, &hc_regs->hcint);
413
414 /*
415 * Program the HCCHARn register with the endpoint characteristics
416 * for the current transfer.
417 */
418 writel(hcchar, &hc_regs->hcchar);
419
420 /* Program the HCSPLIT register for SPLITs */
421 writel(0, &hc_regs->hcsplt);
422 }
423
424 /*
425 * DWC2 to USB API interface
426 */
427 /* Direction: In ; Request: Status */
428 static int dwc_otg_submit_rh_msg_in_status(struct usb_device *dev, void *buffer,
429 int txlen, struct devrequest *cmd)
430 {
431 uint32_t hprt0 = 0;
432 uint32_t port_status = 0;
433 uint32_t port_change = 0;
434 int len = 0;
435 int stat = 0;
436
437 switch (cmd->requesttype & ~USB_DIR_IN) {
438 case 0:
439 *(uint16_t *)buffer = cpu_to_le16(1);
440 len = 2;
441 break;
442 case USB_RECIP_INTERFACE:
443 case USB_RECIP_ENDPOINT:
444 *(uint16_t *)buffer = cpu_to_le16(0);
445 len = 2;
446 break;
447 case USB_TYPE_CLASS:
448 *(uint32_t *)buffer = cpu_to_le32(0);
449 len = 4;
450 break;
451 case USB_RECIP_OTHER | USB_TYPE_CLASS:
452 hprt0 = readl(&regs->hprt0);
453 if (hprt0 & DWC2_HPRT0_PRTCONNSTS)
454 port_status |= USB_PORT_STAT_CONNECTION;
455 if (hprt0 & DWC2_HPRT0_PRTENA)
456 port_status |= USB_PORT_STAT_ENABLE;
457 if (hprt0 & DWC2_HPRT0_PRTSUSP)
458 port_status |= USB_PORT_STAT_SUSPEND;
459 if (hprt0 & DWC2_HPRT0_PRTOVRCURRACT)
460 port_status |= USB_PORT_STAT_OVERCURRENT;
461 if (hprt0 & DWC2_HPRT0_PRTRST)
462 port_status |= USB_PORT_STAT_RESET;
463 if (hprt0 & DWC2_HPRT0_PRTPWR)
464 port_status |= USB_PORT_STAT_POWER;
465
466 port_status |= USB_PORT_STAT_HIGH_SPEED;
467
468 if (hprt0 & DWC2_HPRT0_PRTENCHNG)
469 port_change |= USB_PORT_STAT_C_ENABLE;
470 if (hprt0 & DWC2_HPRT0_PRTCONNDET)
471 port_change |= USB_PORT_STAT_C_CONNECTION;
472 if (hprt0 & DWC2_HPRT0_PRTOVRCURRCHNG)
473 port_change |= USB_PORT_STAT_C_OVERCURRENT;
474
475 *(uint32_t *)buffer = cpu_to_le32(port_status |
476 (port_change << 16));
477 len = 4;
478 break;
479 default:
480 puts("unsupported root hub command\n");
481 stat = USB_ST_STALLED;
482 }
483
484 dev->act_len = min(len, txlen);
485 dev->status = stat;
486
487 return stat;
488 }
489
490 /* Direction: In ; Request: Descriptor */
491 static int dwc_otg_submit_rh_msg_in_descriptor(struct usb_device *dev,
492 void *buffer, int txlen,
493 struct devrequest *cmd)
494 {
495 unsigned char data[32];
496 uint32_t dsc;
497 int len = 0;
498 int stat = 0;
499 uint16_t wValue = cpu_to_le16(cmd->value);
500 uint16_t wLength = cpu_to_le16(cmd->length);
501
502 switch (cmd->requesttype & ~USB_DIR_IN) {
503 case 0:
504 switch (wValue & 0xff00) {
505 case 0x0100: /* device descriptor */
506 len = min3(txlen, (int)sizeof(root_hub_dev_des), (int)wLength);
507 memcpy(buffer, root_hub_dev_des, len);
508 break;
509 case 0x0200: /* configuration descriptor */
510 len = min3(txlen, (int)sizeof(root_hub_config_des), (int)wLength);
511 memcpy(buffer, root_hub_config_des, len);
512 break;
513 case 0x0300: /* string descriptors */
514 switch (wValue & 0xff) {
515 case 0x00:
516 len = min3(txlen, (int)sizeof(root_hub_str_index0),
517 (int)wLength);
518 memcpy(buffer, root_hub_str_index0, len);
519 break;
520 case 0x01:
521 len = min3(txlen, (int)sizeof(root_hub_str_index1),
522 (int)wLength);
523 memcpy(buffer, root_hub_str_index1, len);
524 break;
525 }
526 break;
527 default:
528 stat = USB_ST_STALLED;
529 }
530 break;
531
532 case USB_TYPE_CLASS:
533 /* Root port config, set 1 port and nothing else. */
534 dsc = 0x00000001;
535
536 data[0] = 9; /* min length; */
537 data[1] = 0x29;
538 data[2] = dsc & RH_A_NDP;
539 data[3] = 0;
540 if (dsc & RH_A_PSM)
541 data[3] |= 0x1;
542 if (dsc & RH_A_NOCP)
543 data[3] |= 0x10;
544 else if (dsc & RH_A_OCPM)
545 data[3] |= 0x8;
546
547 /* corresponds to data[4-7] */
548 data[5] = (dsc & RH_A_POTPGT) >> 24;
549 data[7] = dsc & RH_B_DR;
550 if (data[2] < 7) {
551 data[8] = 0xff;
552 } else {
553 data[0] += 2;
554 data[8] = (dsc & RH_B_DR) >> 8;
555 data[9] = 0xff;
556 data[10] = data[9];
557 }
558
559 len = min3(txlen, (int)data[0], (int)wLength);
560 memcpy(buffer, data, len);
561 break;
562 default:
563 puts("unsupported root hub command\n");
564 stat = USB_ST_STALLED;
565 }
566
567 dev->act_len = min(len, txlen);
568 dev->status = stat;
569
570 return stat;
571 }
572
573 /* Direction: In ; Request: Configuration */
574 static int dwc_otg_submit_rh_msg_in_configuration(struct usb_device *dev,
575 void *buffer, int txlen,
576 struct devrequest *cmd)
577 {
578 int len = 0;
579 int stat = 0;
580
581 switch (cmd->requesttype & ~USB_DIR_IN) {
582 case 0:
583 *(uint8_t *)buffer = 0x01;
584 len = 1;
585 break;
586 default:
587 puts("unsupported root hub command\n");
588 stat = USB_ST_STALLED;
589 }
590
591 dev->act_len = min(len, txlen);
592 dev->status = stat;
593
594 return stat;
595 }
596
597 /* Direction: In */
598 static int dwc_otg_submit_rh_msg_in(struct usb_device *dev,
599 void *buffer, int txlen,
600 struct devrequest *cmd)
601 {
602 switch (cmd->request) {
603 case USB_REQ_GET_STATUS:
604 return dwc_otg_submit_rh_msg_in_status(dev, buffer,
605 txlen, cmd);
606 case USB_REQ_GET_DESCRIPTOR:
607 return dwc_otg_submit_rh_msg_in_descriptor(dev, buffer,
608 txlen, cmd);
609 case USB_REQ_GET_CONFIGURATION:
610 return dwc_otg_submit_rh_msg_in_configuration(dev, buffer,
611 txlen, cmd);
612 default:
613 puts("unsupported root hub command\n");
614 return USB_ST_STALLED;
615 }
616 }
617
618 /* Direction: Out */
619 static int dwc_otg_submit_rh_msg_out(struct usb_device *dev,
620 void *buffer, int txlen,
621 struct devrequest *cmd)
622 {
623 int len = 0;
624 int stat = 0;
625 uint16_t bmrtype_breq = cmd->requesttype | (cmd->request << 8);
626 uint16_t wValue = cpu_to_le16(cmd->value);
627
628 switch (bmrtype_breq & ~USB_DIR_IN) {
629 case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_ENDPOINT:
630 case (USB_REQ_CLEAR_FEATURE << 8) | USB_TYPE_CLASS:
631 break;
632
633 case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS:
634 switch (wValue) {
635 case USB_PORT_FEAT_C_CONNECTION:
636 setbits_le32(&regs->hprt0, DWC2_HPRT0_PRTCONNDET);
637 break;
638 }
639 break;
640
641 case (USB_REQ_SET_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS:
642 switch (wValue) {
643 case USB_PORT_FEAT_SUSPEND:
644 break;
645
646 case USB_PORT_FEAT_RESET:
647 clrsetbits_le32(&regs->hprt0, DWC2_HPRT0_PRTENA |
648 DWC2_HPRT0_PRTCONNDET |
649 DWC2_HPRT0_PRTENCHNG |
650 DWC2_HPRT0_PRTOVRCURRCHNG,
651 DWC2_HPRT0_PRTRST);
652 mdelay(50);
653 clrbits_le32(&regs->hprt0, DWC2_HPRT0_PRTRST);
654 break;
655
656 case USB_PORT_FEAT_POWER:
657 clrsetbits_le32(&regs->hprt0, DWC2_HPRT0_PRTENA |
658 DWC2_HPRT0_PRTCONNDET |
659 DWC2_HPRT0_PRTENCHNG |
660 DWC2_HPRT0_PRTOVRCURRCHNG,
661 DWC2_HPRT0_PRTRST);
662 break;
663
664 case USB_PORT_FEAT_ENABLE:
665 break;
666 }
667 break;
668 case (USB_REQ_SET_ADDRESS << 8):
669 root_hub_devnum = wValue;
670 break;
671 case (USB_REQ_SET_CONFIGURATION << 8):
672 break;
673 default:
674 puts("unsupported root hub command\n");
675 stat = USB_ST_STALLED;
676 }
677
678 len = min(len, txlen);
679
680 dev->act_len = len;
681 dev->status = stat;
682
683 return stat;
684 }
685
686 static int dwc_otg_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
687 void *buffer, int txlen,
688 struct devrequest *cmd)
689 {
690 int stat = 0;
691
692 if (usb_pipeint(pipe)) {
693 puts("Root-Hub submit IRQ: NOT implemented\n");
694 return 0;
695 }
696
697 if (cmd->requesttype & USB_DIR_IN)
698 stat = dwc_otg_submit_rh_msg_in(dev, buffer, txlen, cmd);
699 else
700 stat = dwc_otg_submit_rh_msg_out(dev, buffer, txlen, cmd);
701
702 mdelay(1);
703
704 return stat;
705 }
706
707 int wait_for_chhltd(uint32_t *sub, int *toggle)
708 {
709 const uint32_t hcint_comp_hlt_ack = DWC2_HCINT_XFERCOMP |
710 DWC2_HCINT_CHHLTD | DWC2_HCINT_ACK;
711 struct dwc2_hc_regs *hc_regs = &regs->hc_regs[DWC2_HC_CHANNEL];
712 int ret;
713 uint32_t hcint, hctsiz;
714
715 ret = wait_for_bit(&hc_regs->hcint, DWC2_HCINT_CHHLTD, true);
716 if (ret)
717 return ret;
718
719 hcint = readl(&hc_regs->hcint);
720 if (hcint != hcint_comp_hlt_ack) {
721 debug("%s: Error (HCINT=%08x)\n", __func__, hcint);
722 return -EINVAL;
723 }
724
725 hctsiz = readl(&hc_regs->hctsiz);
726 *sub = (hctsiz & DWC2_HCTSIZ_XFERSIZE_MASK) >>
727 DWC2_HCTSIZ_XFERSIZE_OFFSET;
728 if (toggle)
729 *toggle = (hctsiz & DWC2_HCTSIZ_PID_MASK) >>
730 DWC2_HCTSIZ_PID_OFFSET;
731
732 debug("%s: sub=%u toggle=%d\n", __func__, *sub, toggle ? *toggle : -1);
733
734 return 0;
735 }
736
737 static int dwc2_eptype[] = {
738 DWC2_HCCHAR_EPTYPE_ISOC,
739 DWC2_HCCHAR_EPTYPE_INTR,
740 DWC2_HCCHAR_EPTYPE_CONTROL,
741 DWC2_HCCHAR_EPTYPE_BULK,
742 };
743
744 int chunk_msg(struct usb_device *dev, unsigned long pipe, int *pid, int in,
745 void *buffer, int len)
746 {
747 struct dwc2_hc_regs *hc_regs = &regs->hc_regs[DWC2_HC_CHANNEL];
748 int devnum = usb_pipedevice(pipe);
749 int ep = usb_pipeendpoint(pipe);
750 int max = usb_maxpacket(dev, pipe);
751 int eptype = dwc2_eptype[usb_pipetype(pipe)];
752 int done = 0;
753 int ret;
754 uint32_t sub;
755 uint32_t xfer_len;
756 uint32_t num_packets;
757 int stop_transfer = 0;
758
759 debug("%s: msg: pipe %lx pid %d in %d len %d\n", __func__, pipe, *pid,
760 in, len);
761
762 if (len > DWC2_DATA_BUF_SIZE) {
763 printf("%s: %d is more then available buffer size (%d)\n",
764 __func__, len, DWC2_DATA_BUF_SIZE);
765 dev->status = 0;
766 dev->act_len = 0;
767 return -EINVAL;
768 }
769
770 do {
771 /* Initialize channel */
772 dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep, in, eptype,
773 max);
774
775 xfer_len = len - done;
776 /* Make sure that xfer_len is a multiple of max packet size. */
777 if (xfer_len > CONFIG_DWC2_MAX_TRANSFER_SIZE)
778 xfer_len = CONFIG_DWC2_MAX_TRANSFER_SIZE - max + 1;
779
780 if (xfer_len > 0) {
781 num_packets = (xfer_len + max - 1) / max;
782 if (num_packets > CONFIG_DWC2_MAX_PACKET_COUNT) {
783 num_packets = CONFIG_DWC2_MAX_PACKET_COUNT;
784 xfer_len = num_packets * max;
785 }
786 } else {
787 num_packets = 1;
788 }
789
790 if (in)
791 xfer_len = num_packets * max;
792
793 debug("%s: chunk: pid %d xfer_len %u pkts %u\n", __func__,
794 *pid, xfer_len, num_packets);
795
796 writel((xfer_len << DWC2_HCTSIZ_XFERSIZE_OFFSET) |
797 (num_packets << DWC2_HCTSIZ_PKTCNT_OFFSET) |
798 (*pid << DWC2_HCTSIZ_PID_OFFSET),
799 &hc_regs->hctsiz);
800
801 memcpy(aligned_buffer, (char *)buffer + done, len - done);
802 writel((uint32_t)aligned_buffer, &hc_regs->hcdma);
803
804 /* Set host channel enable after all other setup is complete. */
805 clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
806 DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS,
807 (1 << DWC2_HCCHAR_MULTICNT_OFFSET) |
808 DWC2_HCCHAR_CHEN);
809
810 ret = wait_for_chhltd(&sub, pid);
811 if (ret) {
812 stop_transfer = 1;
813 break;
814 }
815
816 done += xfer_len;
817 if (in) {
818 done -= sub;
819 if (sub)
820 stop_transfer = 1;
821 }
822 } while ((done < len) && !stop_transfer);
823
824 if (done && in)
825 memcpy(buffer, aligned_buffer, done);
826
827 writel(0, &hc_regs->hcintmsk);
828 writel(0xFFFFFFFF, &hc_regs->hcint);
829
830 dev->status = 0;
831 dev->act_len = done;
832
833 return 0;
834 }
835
836 /* U-Boot USB transmission interface */
837 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
838 int len)
839 {
840 int devnum = usb_pipedevice(pipe);
841 int ep = usb_pipeendpoint(pipe);
842
843 if (devnum == root_hub_devnum) {
844 dev->status = 0;
845 return -EINVAL;
846 }
847
848 return chunk_msg(dev, pipe, &bulk_data_toggle[devnum][ep],
849 usb_pipein(pipe), buffer, len);
850 }
851
852 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
853 int len, struct devrequest *setup)
854 {
855 int devnum = usb_pipedevice(pipe);
856 int ep = usb_pipeendpoint(pipe);
857 int pid, ret, act_len;
858 /* For CONTROL endpoint pid should start with DATA1 */
859 int status_direction;
860
861 if (devnum == root_hub_devnum) {
862 dev->status = 0;
863 dev->speed = USB_SPEED_HIGH;
864 return dwc_otg_submit_rh_msg(dev, pipe, buffer, len, setup);
865 }
866
867 pid = DWC2_HC_PID_SETUP;
868 ret = chunk_msg(dev, pipe, &pid, 0, setup, 8);
869 if (ret)
870 return ret;
871
872 if (buffer) {
873 control_data_toggle[devnum][ep] = DWC2_HC_PID_DATA1;
874 ret = chunk_msg(dev, pipe, &control_data_toggle[devnum][ep],
875 usb_pipein(pipe), buffer, len);
876 if (ret)
877 return ret;
878 act_len = dev->act_len;
879 } /* End of DATA stage */
880 else
881 act_len = 0;
882
883 /* STATUS stage */
884 if ((len == 0) || usb_pipeout(pipe))
885 status_direction = 1;
886 else
887 status_direction = 0;
888
889 pid = DWC2_HC_PID_DATA1;
890 ret = chunk_msg(dev, pipe, &pid, status_direction, status_buffer, 0);
891 if (ret)
892 return ret;
893
894 dev->act_len = act_len;
895
896 return 0;
897 }
898
899 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
900 int len, int interval)
901 {
902 printf("dev = %p pipe = %#lx buf = %p size = %d int = %d\n",
903 dev, pipe, buffer, len, interval);
904 return -ENOSYS;
905 }
906
907 /* U-Boot USB control interface */
908 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
909 {
910 uint32_t snpsid;
911 int i, j;
912
913 root_hub_devnum = 0;
914
915 snpsid = readl(&regs->gsnpsid);
916 printf("Core Release: %x.%03x\n", snpsid >> 12 & 0xf, snpsid & 0xfff);
917
918 if ((snpsid & DWC2_SNPSID_DEVID_MASK) != DWC2_SNPSID_DEVID_VER_2xx) {
919 printf("SNPSID invalid (not DWC2 OTG device): %08x\n", snpsid);
920 return -ENODEV;
921 }
922
923 dwc_otg_core_init(regs);
924 dwc_otg_core_host_init(regs);
925
926 clrsetbits_le32(&regs->hprt0, DWC2_HPRT0_PRTENA |
927 DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG |
928 DWC2_HPRT0_PRTOVRCURRCHNG,
929 DWC2_HPRT0_PRTRST);
930 mdelay(50);
931 clrbits_le32(&regs->hprt0, DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET |
932 DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG |
933 DWC2_HPRT0_PRTRST);
934
935 for (i = 0; i < MAX_DEVICE; i++) {
936 for (j = 0; j < MAX_ENDPOINT; j++) {
937 control_data_toggle[i][j] = DWC2_HC_PID_DATA1;
938 bulk_data_toggle[i][j] = DWC2_HC_PID_DATA0;
939 }
940 }
941
942 return 0;
943 }
944
945 int usb_lowlevel_stop(int index)
946 {
947 /* Put everything in reset. */
948 clrsetbits_le32(&regs->hprt0, DWC2_HPRT0_PRTENA |
949 DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG |
950 DWC2_HPRT0_PRTOVRCURRCHNG,
951 DWC2_HPRT0_PRTRST);
952 return 0;
953 }
"Das U-Boot" Source Tree