2 * Copyright (C) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * Copyright (C) 2014 Marek Vasut <marex@denx.de>
5 * SPDX-License-Identifier: GPL-2.0+
15 #include <usbroothubdes.h>
20 /* Use only HC channel 0. */
21 #define DWC2_HC_CHANNEL 0
23 #define DWC2_STATUS_BUF_SIZE 64
24 #define DWC2_DATA_BUF_SIZE (64 * 1024)
27 #define MAX_ENDPOINT 16
31 uint8_t aligned_buffer
[DWC2_DATA_BUF_SIZE
] __aligned(ARCH_DMA_MINALIGN
);
32 uint8_t status_buffer
[DWC2_STATUS_BUF_SIZE
] __aligned(ARCH_DMA_MINALIGN
);
34 uint8_t *aligned_buffer
;
35 uint8_t *status_buffer
;
37 int bulk_data_toggle
[MAX_DEVICE
][MAX_ENDPOINT
];
38 struct dwc2_core_regs
*regs
;
43 /* We need cacheline-aligned buffers for DMA transfers and dcache support */
44 DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer_addr
, DWC2_DATA_BUF_SIZE
,
46 DEFINE_ALIGN_BUFFER(uint8_t, status_buffer_addr
, DWC2_STATUS_BUF_SIZE
,
49 static struct dwc2_priv local
;
55 static int wait_for_bit(void *reg
, const uint32_t mask
, bool set
)
57 unsigned int timeout
= 1000000;
65 if ((val
& mask
) == mask
)
71 debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
72 __func__
, reg
, mask
, set
);
78 * Initializes the FSLSPClkSel field of the HCFG register
79 * depending on the PHY type.
81 static void init_fslspclksel(struct dwc2_core_regs
*regs
)
85 #if (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
86 phyclk
= DWC2_HCFG_FSLSPCLKSEL_48_MHZ
; /* Full speed PHY */
88 /* High speed PHY running at full speed or high speed */
89 phyclk
= DWC2_HCFG_FSLSPCLKSEL_30_60_MHZ
;
92 #ifdef CONFIG_DWC2_ULPI_FS_LS
93 uint32_t hwcfg2
= readl(®s
->ghwcfg2
);
94 uint32_t hval
= (ghwcfg2
& DWC2_HWCFG2_HS_PHY_TYPE_MASK
) >>
95 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET
;
96 uint32_t fval
= (ghwcfg2
& DWC2_HWCFG2_FS_PHY_TYPE_MASK
) >>
97 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET
;
99 if (hval
== 2 && fval
== 1)
100 phyclk
= DWC2_HCFG_FSLSPCLKSEL_48_MHZ
; /* Full speed PHY */
103 clrsetbits_le32(®s
->host_regs
.hcfg
,
104 DWC2_HCFG_FSLSPCLKSEL_MASK
,
105 phyclk
<< DWC2_HCFG_FSLSPCLKSEL_OFFSET
);
111 * @param regs Programming view of DWC_otg controller.
112 * @param num Tx FIFO to flush.
114 static void dwc_otg_flush_tx_fifo(struct dwc2_core_regs
*regs
, const int num
)
118 writel(DWC2_GRSTCTL_TXFFLSH
| (num
<< DWC2_GRSTCTL_TXFNUM_OFFSET
),
120 ret
= wait_for_bit(®s
->grstctl
, DWC2_GRSTCTL_TXFFLSH
, 0);
122 printf("%s: Timeout!\n", __func__
);
124 /* Wait for 3 PHY Clocks */
131 * @param regs Programming view of DWC_otg controller.
133 static void dwc_otg_flush_rx_fifo(struct dwc2_core_regs
*regs
)
137 writel(DWC2_GRSTCTL_RXFFLSH
, ®s
->grstctl
);
138 ret
= wait_for_bit(®s
->grstctl
, DWC2_GRSTCTL_RXFFLSH
, 0);
140 printf("%s: Timeout!\n", __func__
);
142 /* Wait for 3 PHY Clocks */
147 * Do core a soft reset of the core. Be careful with this because it
148 * resets all the internal state machines of the core.
150 static void dwc_otg_core_reset(struct dwc2_core_regs
*regs
)
154 /* Wait for AHB master IDLE state. */
155 ret
= wait_for_bit(®s
->grstctl
, DWC2_GRSTCTL_AHBIDLE
, 1);
157 printf("%s: Timeout!\n", __func__
);
159 /* Core Soft Reset */
160 writel(DWC2_GRSTCTL_CSFTRST
, ®s
->grstctl
);
161 ret
= wait_for_bit(®s
->grstctl
, DWC2_GRSTCTL_CSFTRST
, 0);
163 printf("%s: Timeout!\n", __func__
);
166 * Wait for core to come out of reset.
167 * NOTE: This long sleep is _very_ important, otherwise the core will
168 * not stay in host mode after a connector ID change!
174 * This function initializes the DWC_otg controller registers for
177 * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
178 * request queues. Host channels are reset to ensure that they are ready for
179 * performing transfers.
181 * @param regs Programming view of DWC_otg controller
184 static void dwc_otg_core_host_init(struct dwc2_core_regs
*regs
)
186 uint32_t nptxfifosize
= 0;
187 uint32_t ptxfifosize
= 0;
189 int i
, ret
, num_channels
;
191 /* Restart the Phy Clock */
192 writel(0, ®s
->pcgcctl
);
194 /* Initialize Host Configuration Register */
195 init_fslspclksel(regs
);
196 #ifdef CONFIG_DWC2_DFLT_SPEED_FULL
197 setbits_le32(®s
->host_regs
.hcfg
, DWC2_HCFG_FSLSSUPP
);
200 /* Configure data FIFO sizes */
201 #ifdef CONFIG_DWC2_ENABLE_DYNAMIC_FIFO
202 if (readl(®s
->ghwcfg2
) & DWC2_HWCFG2_DYNAMIC_FIFO
) {
204 writel(CONFIG_DWC2_HOST_RX_FIFO_SIZE
, ®s
->grxfsiz
);
206 /* Non-periodic Tx FIFO */
207 nptxfifosize
|= CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE
<<
208 DWC2_FIFOSIZE_DEPTH_OFFSET
;
209 nptxfifosize
|= CONFIG_DWC2_HOST_RX_FIFO_SIZE
<<
210 DWC2_FIFOSIZE_STARTADDR_OFFSET
;
211 writel(nptxfifosize
, ®s
->gnptxfsiz
);
213 /* Periodic Tx FIFO */
214 ptxfifosize
|= CONFIG_DWC2_HOST_PERIO_TX_FIFO_SIZE
<<
215 DWC2_FIFOSIZE_DEPTH_OFFSET
;
216 ptxfifosize
|= (CONFIG_DWC2_HOST_RX_FIFO_SIZE
+
217 CONFIG_DWC2_HOST_NPERIO_TX_FIFO_SIZE
) <<
218 DWC2_FIFOSIZE_STARTADDR_OFFSET
;
219 writel(ptxfifosize
, ®s
->hptxfsiz
);
223 /* Clear Host Set HNP Enable in the OTG Control Register */
224 clrbits_le32(®s
->gotgctl
, DWC2_GOTGCTL_HSTSETHNPEN
);
226 /* Make sure the FIFOs are flushed. */
227 dwc_otg_flush_tx_fifo(regs
, 0x10); /* All Tx FIFOs */
228 dwc_otg_flush_rx_fifo(regs
);
230 /* Flush out any leftover queued requests. */
231 num_channels
= readl(®s
->ghwcfg2
);
232 num_channels
&= DWC2_HWCFG2_NUM_HOST_CHAN_MASK
;
233 num_channels
>>= DWC2_HWCFG2_NUM_HOST_CHAN_OFFSET
;
236 for (i
= 0; i
< num_channels
; i
++)
237 clrsetbits_le32(®s
->hc_regs
[i
].hcchar
,
238 DWC2_HCCHAR_CHEN
| DWC2_HCCHAR_EPDIR
,
241 /* Halt all channels to put them into a known state. */
242 for (i
= 0; i
< num_channels
; i
++) {
243 clrsetbits_le32(®s
->hc_regs
[i
].hcchar
,
245 DWC2_HCCHAR_CHEN
| DWC2_HCCHAR_CHDIS
);
246 ret
= wait_for_bit(®s
->hc_regs
[i
].hcchar
,
247 DWC2_HCCHAR_CHEN
, 0);
249 printf("%s: Timeout!\n", __func__
);
252 /* Turn on the vbus power. */
253 if (readl(®s
->gintsts
) & DWC2_GINTSTS_CURMODE_HOST
) {
254 hprt0
= readl(®s
->hprt0
);
255 hprt0
&= ~(DWC2_HPRT0_PRTENA
| DWC2_HPRT0_PRTCONNDET
);
256 hprt0
&= ~(DWC2_HPRT0_PRTENCHNG
| DWC2_HPRT0_PRTOVRCURRCHNG
);
257 if (!(hprt0
& DWC2_HPRT0_PRTPWR
)) {
258 hprt0
|= DWC2_HPRT0_PRTPWR
;
259 writel(hprt0
, ®s
->hprt0
);
265 * This function initializes the DWC_otg controller registers and
266 * prepares the core for device mode or host mode operation.
268 * @param regs Programming view of the DWC_otg controller
270 static void dwc_otg_core_init(struct dwc2_core_regs
*regs
)
274 uint8_t brst_sz
= CONFIG_DWC2_DMA_BURST_SIZE
;
276 /* Common Initialization */
277 usbcfg
= readl(®s
->gusbcfg
);
279 /* Program the ULPI External VBUS bit if needed */
280 #ifdef CONFIG_DWC2_PHY_ULPI_EXT_VBUS
281 usbcfg
|= DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV
;
283 usbcfg
&= ~DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV
;
286 /* Set external TS Dline pulsing */
287 #ifdef CONFIG_DWC2_TS_DLINE
288 usbcfg
|= DWC2_GUSBCFG_TERM_SEL_DL_PULSE
;
290 usbcfg
&= ~DWC2_GUSBCFG_TERM_SEL_DL_PULSE
;
292 writel(usbcfg
, ®s
->gusbcfg
);
294 /* Reset the Controller */
295 dwc_otg_core_reset(regs
);
298 * This programming sequence needs to happen in FS mode before
299 * any other programming occurs
301 #if defined(CONFIG_DWC2_DFLT_SPEED_FULL) && \
302 (CONFIG_DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
303 /* If FS mode with FS PHY */
304 setbits_le32(®s
->gusbcfg
, DWC2_GUSBCFG_PHYSEL
);
306 /* Reset after a PHY select */
307 dwc_otg_core_reset(regs
);
310 * Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.
311 * Also do this on HNP Dev/Host mode switches (done in dev_init
314 if (readl(®s
->gintsts
) & DWC2_GINTSTS_CURMODE_HOST
)
315 init_fslspclksel(regs
);
317 #ifdef CONFIG_DWC2_I2C_ENABLE
318 /* Program GUSBCFG.OtgUtmifsSel to I2C */
319 setbits_le32(®s
->gusbcfg
, DWC2_GUSBCFG_OTGUTMIFSSEL
);
321 /* Program GI2CCTL.I2CEn */
322 clrsetbits_le32(®s
->gi2cctl
, DWC2_GI2CCTL_I2CEN
|
323 DWC2_GI2CCTL_I2CDEVADDR_MASK
,
324 1 << DWC2_GI2CCTL_I2CDEVADDR_OFFSET
);
325 setbits_le32(®s
->gi2cctl
, DWC2_GI2CCTL_I2CEN
);
329 /* High speed PHY. */
332 * HS PHY parameters. These parameters are preserved during
333 * soft reset so only program the first time. Do a soft reset
334 * immediately after setting phyif.
336 usbcfg
&= ~(DWC2_GUSBCFG_ULPI_UTMI_SEL
| DWC2_GUSBCFG_PHYIF
);
337 usbcfg
|= CONFIG_DWC2_PHY_TYPE
<< DWC2_GUSBCFG_ULPI_UTMI_SEL_OFFSET
;
339 if (usbcfg
& DWC2_GUSBCFG_ULPI_UTMI_SEL
) { /* ULPI interface */
340 #ifdef CONFIG_DWC2_PHY_ULPI_DDR
341 usbcfg
|= DWC2_GUSBCFG_DDRSEL
;
343 usbcfg
&= ~DWC2_GUSBCFG_DDRSEL
;
345 } else { /* UTMI+ interface */
346 #if (CONFIG_DWC2_UTMI_PHY_WIDTH == 16)
347 usbcfg
|= DWC2_GUSBCFG_PHYIF
;
351 writel(usbcfg
, ®s
->gusbcfg
);
353 /* Reset after setting the PHY parameters */
354 dwc_otg_core_reset(regs
);
357 usbcfg
= readl(®s
->gusbcfg
);
358 usbcfg
&= ~(DWC2_GUSBCFG_ULPI_FSLS
| DWC2_GUSBCFG_ULPI_CLK_SUS_M
);
359 #ifdef CONFIG_DWC2_ULPI_FS_LS
360 uint32_t hwcfg2
= readl(®s
->ghwcfg2
);
361 uint32_t hval
= (ghwcfg2
& DWC2_HWCFG2_HS_PHY_TYPE_MASK
) >>
362 DWC2_HWCFG2_HS_PHY_TYPE_OFFSET
;
363 uint32_t fval
= (ghwcfg2
& DWC2_HWCFG2_FS_PHY_TYPE_MASK
) >>
364 DWC2_HWCFG2_FS_PHY_TYPE_OFFSET
;
365 if (hval
== 2 && fval
== 1) {
366 usbcfg
|= DWC2_GUSBCFG_ULPI_FSLS
;
367 usbcfg
|= DWC2_GUSBCFG_ULPI_CLK_SUS_M
;
370 writel(usbcfg
, ®s
->gusbcfg
);
372 /* Program the GAHBCFG Register. */
373 switch (readl(®s
->ghwcfg2
) & DWC2_HWCFG2_ARCHITECTURE_MASK
) {
374 case DWC2_HWCFG2_ARCHITECTURE_SLAVE_ONLY
:
376 case DWC2_HWCFG2_ARCHITECTURE_EXT_DMA
:
377 while (brst_sz
> 1) {
378 ahbcfg
|= ahbcfg
+ (1 << DWC2_GAHBCFG_HBURSTLEN_OFFSET
);
379 ahbcfg
&= DWC2_GAHBCFG_HBURSTLEN_MASK
;
383 #ifdef CONFIG_DWC2_DMA_ENABLE
384 ahbcfg
|= DWC2_GAHBCFG_DMAENABLE
;
388 case DWC2_HWCFG2_ARCHITECTURE_INT_DMA
:
389 ahbcfg
|= DWC2_GAHBCFG_HBURSTLEN_INCR4
;
390 #ifdef CONFIG_DWC2_DMA_ENABLE
391 ahbcfg
|= DWC2_GAHBCFG_DMAENABLE
;
396 writel(ahbcfg
, ®s
->gahbcfg
);
398 /* Program the GUSBCFG register for HNP/SRP. */
399 setbits_le32(®s
->gusbcfg
, DWC2_GUSBCFG_HNPCAP
| DWC2_GUSBCFG_SRPCAP
);
401 #ifdef CONFIG_DWC2_IC_USB_CAP
402 setbits_le32(®s
->gusbcfg
, DWC2_GUSBCFG_IC_USB_CAP
);
407 * Prepares a host channel for transferring packets to/from a specific
408 * endpoint. The HCCHARn register is set up with the characteristics specified
409 * in _hc. Host channel interrupts that may need to be serviced while this
410 * transfer is in progress are enabled.
412 * @param regs Programming view of DWC_otg controller
413 * @param hc Information needed to initialize the host channel
415 static void dwc_otg_hc_init(struct dwc2_core_regs
*regs
, uint8_t hc_num
,
416 struct usb_device
*dev
, uint8_t dev_addr
, uint8_t ep_num
,
417 uint8_t ep_is_in
, uint8_t ep_type
, uint16_t max_packet
)
419 struct dwc2_hc_regs
*hc_regs
= ®s
->hc_regs
[hc_num
];
420 uint32_t hcchar
= (dev_addr
<< DWC2_HCCHAR_DEVADDR_OFFSET
) |
421 (ep_num
<< DWC2_HCCHAR_EPNUM_OFFSET
) |
422 (ep_is_in
<< DWC2_HCCHAR_EPDIR_OFFSET
) |
423 (ep_type
<< DWC2_HCCHAR_EPTYPE_OFFSET
) |
424 (max_packet
<< DWC2_HCCHAR_MPS_OFFSET
);
426 if (dev
->speed
== USB_SPEED_LOW
)
427 hcchar
|= DWC2_HCCHAR_LSPDDEV
;
430 * Program the HCCHARn register with the endpoint characteristics
431 * for the current transfer.
433 writel(hcchar
, &hc_regs
->hcchar
);
435 /* Program the HCSPLIT register for SPLITs */
436 writel(0, &hc_regs
->hcsplt
);
440 * DWC2 to USB API interface
442 /* Direction: In ; Request: Status */
443 static int dwc_otg_submit_rh_msg_in_status(struct dwc2_core_regs
*regs
,
444 struct usb_device
*dev
, void *buffer
,
445 int txlen
, struct devrequest
*cmd
)
448 uint32_t port_status
= 0;
449 uint32_t port_change
= 0;
453 switch (cmd
->requesttype
& ~USB_DIR_IN
) {
455 *(uint16_t *)buffer
= cpu_to_le16(1);
458 case USB_RECIP_INTERFACE
:
459 case USB_RECIP_ENDPOINT
:
460 *(uint16_t *)buffer
= cpu_to_le16(0);
464 *(uint32_t *)buffer
= cpu_to_le32(0);
467 case USB_RECIP_OTHER
| USB_TYPE_CLASS
:
468 hprt0
= readl(®s
->hprt0
);
469 if (hprt0
& DWC2_HPRT0_PRTCONNSTS
)
470 port_status
|= USB_PORT_STAT_CONNECTION
;
471 if (hprt0
& DWC2_HPRT0_PRTENA
)
472 port_status
|= USB_PORT_STAT_ENABLE
;
473 if (hprt0
& DWC2_HPRT0_PRTSUSP
)
474 port_status
|= USB_PORT_STAT_SUSPEND
;
475 if (hprt0
& DWC2_HPRT0_PRTOVRCURRACT
)
476 port_status
|= USB_PORT_STAT_OVERCURRENT
;
477 if (hprt0
& DWC2_HPRT0_PRTRST
)
478 port_status
|= USB_PORT_STAT_RESET
;
479 if (hprt0
& DWC2_HPRT0_PRTPWR
)
480 port_status
|= USB_PORT_STAT_POWER
;
482 if ((hprt0
& DWC2_HPRT0_PRTSPD_MASK
) == DWC2_HPRT0_PRTSPD_LOW
)
483 port_status
|= USB_PORT_STAT_LOW_SPEED
;
484 else if ((hprt0
& DWC2_HPRT0_PRTSPD_MASK
) ==
485 DWC2_HPRT0_PRTSPD_HIGH
)
486 port_status
|= USB_PORT_STAT_HIGH_SPEED
;
488 if (hprt0
& DWC2_HPRT0_PRTENCHNG
)
489 port_change
|= USB_PORT_STAT_C_ENABLE
;
490 if (hprt0
& DWC2_HPRT0_PRTCONNDET
)
491 port_change
|= USB_PORT_STAT_C_CONNECTION
;
492 if (hprt0
& DWC2_HPRT0_PRTOVRCURRCHNG
)
493 port_change
|= USB_PORT_STAT_C_OVERCURRENT
;
495 *(uint32_t *)buffer
= cpu_to_le32(port_status
|
496 (port_change
<< 16));
500 puts("unsupported root hub command\n");
501 stat
= USB_ST_STALLED
;
504 dev
->act_len
= min(len
, txlen
);
510 /* Direction: In ; Request: Descriptor */
511 static int dwc_otg_submit_rh_msg_in_descriptor(struct usb_device
*dev
,
512 void *buffer
, int txlen
,
513 struct devrequest
*cmd
)
515 unsigned char data
[32];
519 uint16_t wValue
= cpu_to_le16(cmd
->value
);
520 uint16_t wLength
= cpu_to_le16(cmd
->length
);
522 switch (cmd
->requesttype
& ~USB_DIR_IN
) {
524 switch (wValue
& 0xff00) {
525 case 0x0100: /* device descriptor */
526 len
= min3(txlen
, (int)sizeof(root_hub_dev_des
), (int)wLength
);
527 memcpy(buffer
, root_hub_dev_des
, len
);
529 case 0x0200: /* configuration descriptor */
530 len
= min3(txlen
, (int)sizeof(root_hub_config_des
), (int)wLength
);
531 memcpy(buffer
, root_hub_config_des
, len
);
533 case 0x0300: /* string descriptors */
534 switch (wValue
& 0xff) {
536 len
= min3(txlen
, (int)sizeof(root_hub_str_index0
),
538 memcpy(buffer
, root_hub_str_index0
, len
);
541 len
= min3(txlen
, (int)sizeof(root_hub_str_index1
),
543 memcpy(buffer
, root_hub_str_index1
, len
);
548 stat
= USB_ST_STALLED
;
553 /* Root port config, set 1 port and nothing else. */
556 data
[0] = 9; /* min length; */
558 data
[2] = dsc
& RH_A_NDP
;
564 else if (dsc
& RH_A_OCPM
)
567 /* corresponds to data[4-7] */
568 data
[5] = (dsc
& RH_A_POTPGT
) >> 24;
569 data
[7] = dsc
& RH_B_DR
;
574 data
[8] = (dsc
& RH_B_DR
) >> 8;
579 len
= min3(txlen
, (int)data
[0], (int)wLength
);
580 memcpy(buffer
, data
, len
);
583 puts("unsupported root hub command\n");
584 stat
= USB_ST_STALLED
;
587 dev
->act_len
= min(len
, txlen
);
593 /* Direction: In ; Request: Configuration */
594 static int dwc_otg_submit_rh_msg_in_configuration(struct usb_device
*dev
,
595 void *buffer
, int txlen
,
596 struct devrequest
*cmd
)
601 switch (cmd
->requesttype
& ~USB_DIR_IN
) {
603 *(uint8_t *)buffer
= 0x01;
607 puts("unsupported root hub command\n");
608 stat
= USB_ST_STALLED
;
611 dev
->act_len
= min(len
, txlen
);
618 static int dwc_otg_submit_rh_msg_in(struct dwc2_priv
*priv
,
619 struct usb_device
*dev
, void *buffer
,
620 int txlen
, struct devrequest
*cmd
)
622 switch (cmd
->request
) {
623 case USB_REQ_GET_STATUS
:
624 return dwc_otg_submit_rh_msg_in_status(priv
->regs
, dev
, buffer
,
626 case USB_REQ_GET_DESCRIPTOR
:
627 return dwc_otg_submit_rh_msg_in_descriptor(dev
, buffer
,
629 case USB_REQ_GET_CONFIGURATION
:
630 return dwc_otg_submit_rh_msg_in_configuration(dev
, buffer
,
633 puts("unsupported root hub command\n");
634 return USB_ST_STALLED
;
639 static int dwc_otg_submit_rh_msg_out(struct dwc2_priv
*priv
,
640 struct usb_device
*dev
,
641 void *buffer
, int txlen
,
642 struct devrequest
*cmd
)
644 struct dwc2_core_regs
*regs
= priv
->regs
;
647 uint16_t bmrtype_breq
= cmd
->requesttype
| (cmd
->request
<< 8);
648 uint16_t wValue
= cpu_to_le16(cmd
->value
);
650 switch (bmrtype_breq
& ~USB_DIR_IN
) {
651 case (USB_REQ_CLEAR_FEATURE
<< 8) | USB_RECIP_ENDPOINT
:
652 case (USB_REQ_CLEAR_FEATURE
<< 8) | USB_TYPE_CLASS
:
655 case (USB_REQ_CLEAR_FEATURE
<< 8) | USB_RECIP_OTHER
| USB_TYPE_CLASS
:
657 case USB_PORT_FEAT_C_CONNECTION
:
658 setbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTCONNDET
);
663 case (USB_REQ_SET_FEATURE
<< 8) | USB_RECIP_OTHER
| USB_TYPE_CLASS
:
665 case USB_PORT_FEAT_SUSPEND
:
668 case USB_PORT_FEAT_RESET
:
669 clrsetbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTENA
|
670 DWC2_HPRT0_PRTCONNDET
|
671 DWC2_HPRT0_PRTENCHNG
|
672 DWC2_HPRT0_PRTOVRCURRCHNG
,
675 clrbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTRST
);
678 case USB_PORT_FEAT_POWER
:
679 clrsetbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTENA
|
680 DWC2_HPRT0_PRTCONNDET
|
681 DWC2_HPRT0_PRTENCHNG
|
682 DWC2_HPRT0_PRTOVRCURRCHNG
,
686 case USB_PORT_FEAT_ENABLE
:
690 case (USB_REQ_SET_ADDRESS
<< 8):
691 priv
->root_hub_devnum
= wValue
;
693 case (USB_REQ_SET_CONFIGURATION
<< 8):
696 puts("unsupported root hub command\n");
697 stat
= USB_ST_STALLED
;
700 len
= min(len
, txlen
);
708 static int dwc_otg_submit_rh_msg(struct dwc2_priv
*priv
, struct usb_device
*dev
,
709 unsigned long pipe
, void *buffer
, int txlen
,
710 struct devrequest
*cmd
)
714 if (usb_pipeint(pipe
)) {
715 puts("Root-Hub submit IRQ: NOT implemented\n");
719 if (cmd
->requesttype
& USB_DIR_IN
)
720 stat
= dwc_otg_submit_rh_msg_in(priv
, dev
, buffer
, txlen
, cmd
);
722 stat
= dwc_otg_submit_rh_msg_out(priv
, dev
, buffer
, txlen
, cmd
);
729 int wait_for_chhltd(struct dwc2_hc_regs
*hc_regs
, uint32_t *sub
, int *toggle
)
732 uint32_t hcint
, hctsiz
;
734 ret
= wait_for_bit(&hc_regs
->hcint
, DWC2_HCINT_CHHLTD
, true);
738 hcint
= readl(&hc_regs
->hcint
);
739 hctsiz
= readl(&hc_regs
->hctsiz
);
740 *sub
= (hctsiz
& DWC2_HCTSIZ_XFERSIZE_MASK
) >>
741 DWC2_HCTSIZ_XFERSIZE_OFFSET
;
742 *toggle
= (hctsiz
& DWC2_HCTSIZ_PID_MASK
) >> DWC2_HCTSIZ_PID_OFFSET
;
744 debug("%s: HCINT=%08x sub=%u toggle=%d\n", __func__
, hcint
, *sub
,
747 if (hcint
& DWC2_HCINT_XFERCOMP
)
750 if (hcint
& (DWC2_HCINT_NAK
| DWC2_HCINT_FRMOVRUN
))
753 debug("%s: Error (HCINT=%08x)\n", __func__
, hcint
);
757 static int dwc2_eptype
[] = {
758 DWC2_HCCHAR_EPTYPE_ISOC
,
759 DWC2_HCCHAR_EPTYPE_INTR
,
760 DWC2_HCCHAR_EPTYPE_CONTROL
,
761 DWC2_HCCHAR_EPTYPE_BULK
,
764 static int transfer_chunk(struct dwc2_hc_regs
*hc_regs
, void *aligned_buffer
,
765 int *pid
, int in
, void *buffer
, int num_packets
,
766 int xfer_len
, int *actual_len
)
771 debug("%s: chunk: pid %d xfer_len %u pkts %u\n", __func__
,
772 *pid
, xfer_len
, num_packets
);
774 writel((xfer_len
<< DWC2_HCTSIZ_XFERSIZE_OFFSET
) |
775 (num_packets
<< DWC2_HCTSIZ_PKTCNT_OFFSET
) |
776 (*pid
<< DWC2_HCTSIZ_PID_OFFSET
),
779 if (!in
&& xfer_len
) {
780 memcpy(aligned_buffer
, buffer
, xfer_len
);
782 flush_dcache_range((unsigned long)aligned_buffer
,
783 (unsigned long)aligned_buffer
+
784 roundup(xfer_len
, ARCH_DMA_MINALIGN
));
787 writel(phys_to_bus((unsigned long)aligned_buffer
), &hc_regs
->hcdma
);
789 /* Clear old interrupt conditions for this host channel. */
790 writel(0x3fff, &hc_regs
->hcint
);
792 /* Set host channel enable after all other setup is complete. */
793 clrsetbits_le32(&hc_regs
->hcchar
, DWC2_HCCHAR_MULTICNT_MASK
|
794 DWC2_HCCHAR_CHEN
| DWC2_HCCHAR_CHDIS
,
795 (1 << DWC2_HCCHAR_MULTICNT_OFFSET
) |
798 ret
= wait_for_chhltd(hc_regs
, &sub
, pid
);
805 invalidate_dcache_range((unsigned long)aligned_buffer
,
806 (unsigned long)aligned_buffer
+
807 roundup(xfer_len
, ARCH_DMA_MINALIGN
));
809 memcpy(buffer
, aligned_buffer
, xfer_len
);
811 *actual_len
= xfer_len
;
816 int chunk_msg(struct dwc2_priv
*priv
, struct usb_device
*dev
,
817 unsigned long pipe
, int *pid
, int in
, void *buffer
, int len
)
819 struct dwc2_core_regs
*regs
= priv
->regs
;
820 struct dwc2_hc_regs
*hc_regs
= ®s
->hc_regs
[DWC2_HC_CHANNEL
];
821 int devnum
= usb_pipedevice(pipe
);
822 int ep
= usb_pipeendpoint(pipe
);
823 int max
= usb_maxpacket(dev
, pipe
);
824 int eptype
= dwc2_eptype
[usb_pipetype(pipe
)];
828 uint32_t num_packets
;
829 int stop_transfer
= 0;
830 uint32_t max_xfer_len
;
832 debug("%s: msg: pipe %lx pid %d in %d len %d\n", __func__
, pipe
, *pid
,
835 max_xfer_len
= CONFIG_DWC2_MAX_PACKET_COUNT
* max
;
836 if (max_xfer_len
> CONFIG_DWC2_MAX_TRANSFER_SIZE
)
837 max_xfer_len
= CONFIG_DWC2_MAX_TRANSFER_SIZE
;
838 if (max_xfer_len
> DWC2_DATA_BUF_SIZE
)
839 max_xfer_len
= DWC2_DATA_BUF_SIZE
;
841 /* Make sure that max_xfer_len is a multiple of max packet size. */
842 num_packets
= max_xfer_len
/ max
;
843 max_xfer_len
= num_packets
* max
;
845 /* Initialize channel */
846 dwc_otg_hc_init(regs
, DWC2_HC_CHANNEL
, dev
, devnum
, ep
, in
,
851 xfer_len
= len
- done
;
853 if (xfer_len
> max_xfer_len
)
854 xfer_len
= max_xfer_len
;
855 else if (xfer_len
> max
)
856 num_packets
= (xfer_len
+ max
- 1) / max
;
860 ret
= transfer_chunk(hc_regs
, priv
->aligned_buffer
, pid
,
861 in
, (char *)buffer
+ done
, num_packets
,
862 xfer_len
, &actual_len
);
867 if (actual_len
< xfer_len
)
872 } while ((done
< len
) && !stop_transfer
);
874 writel(0, &hc_regs
->hcintmsk
);
875 writel(0xFFFFFFFF, &hc_regs
->hcint
);
883 /* U-Boot USB transmission interface */
884 int _submit_bulk_msg(struct dwc2_priv
*priv
, struct usb_device
*dev
,
885 unsigned long pipe
, void *buffer
, int len
)
887 int devnum
= usb_pipedevice(pipe
);
888 int ep
= usb_pipeendpoint(pipe
);
890 if (devnum
== priv
->root_hub_devnum
) {
895 return chunk_msg(priv
, dev
, pipe
, &priv
->bulk_data_toggle
[devnum
][ep
],
896 usb_pipein(pipe
), buffer
, len
);
899 static int _submit_control_msg(struct dwc2_priv
*priv
, struct usb_device
*dev
,
900 unsigned long pipe
, void *buffer
, int len
,
901 struct devrequest
*setup
)
903 int devnum
= usb_pipedevice(pipe
);
904 int pid
, ret
, act_len
;
905 /* For CONTROL endpoint pid should start with DATA1 */
906 int status_direction
;
908 if (devnum
== priv
->root_hub_devnum
) {
910 dev
->speed
= USB_SPEED_HIGH
;
911 return dwc_otg_submit_rh_msg(priv
, dev
, pipe
, buffer
, len
,
915 pid
= DWC2_HC_PID_SETUP
;
916 ret
= chunk_msg(priv
, dev
, pipe
, &pid
, 0, setup
, 8);
921 pid
= DWC2_HC_PID_DATA1
;
922 ret
= chunk_msg(priv
, dev
, pipe
, &pid
, usb_pipein(pipe
), buffer
,
926 act_len
= dev
->act_len
;
927 } /* End of DATA stage */
932 if ((len
== 0) || usb_pipeout(pipe
))
933 status_direction
= 1;
935 status_direction
= 0;
937 pid
= DWC2_HC_PID_DATA1
;
938 ret
= chunk_msg(priv
, dev
, pipe
, &pid
, status_direction
,
939 priv
->status_buffer
, 0);
943 dev
->act_len
= act_len
;
948 int _submit_int_msg(struct dwc2_priv
*priv
, struct usb_device
*dev
,
949 unsigned long pipe
, void *buffer
, int len
, int interval
)
951 unsigned long timeout
;
954 /* FIXME: what is interval? */
956 timeout
= get_timer(0) + USB_TIMEOUT_MS(pipe
);
958 if (get_timer(0) > timeout
) {
959 printf("Timeout poll on interrupt endpoint\n");
962 ret
= _submit_bulk_msg(priv
, dev
, pipe
, buffer
, len
);
968 static int dwc2_init_common(struct dwc2_priv
*priv
)
970 struct dwc2_core_regs
*regs
= priv
->regs
;
974 snpsid
= readl(®s
->gsnpsid
);
975 printf("Core Release: %x.%03x\n", snpsid
>> 12 & 0xf, snpsid
& 0xfff);
977 if ((snpsid
& DWC2_SNPSID_DEVID_MASK
) != DWC2_SNPSID_DEVID_VER_2xx
&&
978 (snpsid
& DWC2_SNPSID_DEVID_MASK
) != DWC2_SNPSID_DEVID_VER_3xx
) {
979 printf("SNPSID invalid (not DWC2 OTG device): %08x\n", snpsid
);
983 dwc_otg_core_init(regs
);
984 dwc_otg_core_host_init(regs
);
986 clrsetbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTENA
|
987 DWC2_HPRT0_PRTCONNDET
| DWC2_HPRT0_PRTENCHNG
|
988 DWC2_HPRT0_PRTOVRCURRCHNG
,
991 clrbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTENA
| DWC2_HPRT0_PRTCONNDET
|
992 DWC2_HPRT0_PRTENCHNG
| DWC2_HPRT0_PRTOVRCURRCHNG
|
995 for (i
= 0; i
< MAX_DEVICE
; i
++) {
996 for (j
= 0; j
< MAX_ENDPOINT
; j
++)
997 priv
->bulk_data_toggle
[i
][j
] = DWC2_HC_PID_DATA0
;
1003 static void dwc2_uninit_common(struct dwc2_core_regs
*regs
)
1005 /* Put everything in reset. */
1006 clrsetbits_le32(®s
->hprt0
, DWC2_HPRT0_PRTENA
|
1007 DWC2_HPRT0_PRTCONNDET
| DWC2_HPRT0_PRTENCHNG
|
1008 DWC2_HPRT0_PRTOVRCURRCHNG
,
1012 #ifndef CONFIG_DM_USB
1013 int submit_control_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1014 int len
, struct devrequest
*setup
)
1016 return _submit_control_msg(&local
, dev
, pipe
, buffer
, len
, setup
);
1019 int submit_bulk_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1022 return _submit_bulk_msg(&local
, dev
, pipe
, buffer
, len
);
1025 int submit_int_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1026 int len
, int interval
)
1028 return _submit_int_msg(&local
, dev
, pipe
, buffer
, len
, interval
);
1031 /* U-Boot USB control interface */
1032 int usb_lowlevel_init(int index
, enum usb_init_type init
, void **controller
)
1034 struct dwc2_priv
*priv
= &local
;
1036 memset(priv
, '\0', sizeof(*priv
));
1037 priv
->root_hub_devnum
= 0;
1038 priv
->regs
= (struct dwc2_core_regs
*)CONFIG_USB_DWC2_REG_ADDR
;
1039 priv
->aligned_buffer
= aligned_buffer_addr
;
1040 priv
->status_buffer
= status_buffer_addr
;
1042 /* board-dependant init */
1043 if (board_usb_init(index
, USB_INIT_HOST
))
1046 return dwc2_init_common(priv
);
1049 int usb_lowlevel_stop(int index
)
1051 dwc2_uninit_common(local
.regs
);
1057 #ifdef CONFIG_DM_USB
1058 static int dwc2_submit_control_msg(struct udevice
*dev
, struct usb_device
*udev
,
1059 unsigned long pipe
, void *buffer
, int length
,
1060 struct devrequest
*setup
)
1062 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1064 debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__
,
1065 dev
->name
, udev
, udev
->dev
->name
, udev
->portnr
);
1067 return _submit_control_msg(priv
, udev
, pipe
, buffer
, length
, setup
);
1070 static int dwc2_submit_bulk_msg(struct udevice
*dev
, struct usb_device
*udev
,
1071 unsigned long pipe
, void *buffer
, int length
)
1073 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1075 debug("%s: dev='%s', udev=%p\n", __func__
, dev
->name
, udev
);
1077 return _submit_bulk_msg(priv
, udev
, pipe
, buffer
, length
);
1080 static int dwc2_submit_int_msg(struct udevice
*dev
, struct usb_device
*udev
,
1081 unsigned long pipe
, void *buffer
, int length
,
1084 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1086 debug("%s: dev='%s', udev=%p\n", __func__
, dev
->name
, udev
);
1088 return _submit_int_msg(priv
, udev
, pipe
, buffer
, length
, interval
);
1091 static int dwc2_usb_ofdata_to_platdata(struct udevice
*dev
)
1093 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1096 addr
= dev_get_addr(dev
);
1097 if (addr
== FDT_ADDR_T_NONE
)
1099 priv
->regs
= (struct dwc2_core_regs
*)addr
;
1104 static int dwc2_usb_probe(struct udevice
*dev
)
1106 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1108 return dwc2_init_common(priv
);
1111 static int dwc2_usb_remove(struct udevice
*dev
)
1113 struct dwc2_priv
*priv
= dev_get_priv(dev
);
1115 dwc2_uninit_common(priv
->regs
);
1120 struct dm_usb_ops dwc2_usb_ops
= {
1121 .control
= dwc2_submit_control_msg
,
1122 .bulk
= dwc2_submit_bulk_msg
,
1123 .interrupt
= dwc2_submit_int_msg
,
1126 static const struct udevice_id dwc2_usb_ids
[] = {
1127 { .compatible
= "brcm,bcm2835-usb" },
1128 { .compatible
= "snps,dwc2" },
1132 U_BOOT_DRIVER(usb_dwc2
) = {
1135 .of_match
= dwc2_usb_ids
,
1136 .ofdata_to_platdata
= dwc2_usb_ofdata_to_platdata
,
1137 .probe
= dwc2_usb_probe
,
1138 .remove
= dwc2_usb_remove
,
1139 .ops
= &dwc2_usb_ops
,
1140 .priv_auto_alloc_size
= sizeof(struct dwc2_priv
),
1141 .flags
= DM_FLAG_ALLOC_PRIV_DMA
,