2 * driver/usb/gadget/fsl_qe_udc.c
4 * Copyright (c) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
6 * Xie Xiaobo <X.Xie@freescale.com>
7 * Li Yang <leoli@freescale.com>
8 * Based on bareboard code from Shlomi Gridish.
11 * Freescle QE/CPM USB Pheripheral Controller Driver
12 * The controller can be found on MPC8360, MPC8272, and etc.
13 * MPC8360 Rev 1.1 may need QE mircocode update
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/ioport.h>
26 #include <linux/types.h>
27 #include <linux/errno.h>
28 #include <linux/err.h>
29 #include <linux/slab.h>
30 #include <linux/list.h>
31 #include <linux/interrupt.h>
33 #include <linux/moduleparam.h>
34 #include <linux/of_address.h>
35 #include <linux/of_irq.h>
36 #include <linux/of_platform.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/usb/ch9.h>
39 #include <linux/usb/gadget.h>
40 #include <linux/usb/otg.h>
41 #include <soc/fsl/qe/qe.h>
45 #include "fsl_qe_udc.h"
47 #define DRIVER_DESC "Freescale QE/CPM USB Device Controller driver"
48 #define DRIVER_AUTHOR "Xie XiaoBo"
49 #define DRIVER_VERSION "1.0"
51 #define DMA_ADDR_INVALID (~(dma_addr_t)0)
53 static const char driver_name
[] = "fsl_qe_udc";
54 static const char driver_desc
[] = DRIVER_DESC
;
56 /*ep name is important in gadget, it should obey the convention of ep_match()*/
57 static const char *const ep_name
[] = {
58 "ep0-control", /* everyone has ep0 */
59 /* 3 configurable endpoints */
65 static const struct usb_endpoint_descriptor qe_ep0_desc
= {
66 .bLength
= USB_DT_ENDPOINT_SIZE
,
67 .bDescriptorType
= USB_DT_ENDPOINT
,
69 .bEndpointAddress
= 0,
70 .bmAttributes
= USB_ENDPOINT_XFER_CONTROL
,
71 .wMaxPacketSize
= USB_MAX_CTRL_PAYLOAD
,
74 /********************************************************************
75 * Internal Used Function Start
76 ********************************************************************/
77 /*-----------------------------------------------------------------
78 * done() - retire a request; caller blocked irqs
79 *--------------------------------------------------------------*/
80 static void done(struct qe_ep
*ep
, struct qe_req
*req
, int status
)
82 struct qe_udc
*udc
= ep
->udc
;
83 unsigned char stopped
= ep
->stopped
;
85 /* the req->queue pointer is used by ep_queue() func, in which
86 * the request will be added into a udc_ep->queue 'd tail
87 * so here the req will be dropped from the ep->queue
89 list_del_init(&req
->queue
);
91 /* req.status should be set as -EINPROGRESS in ep_queue() */
92 if (req
->req
.status
== -EINPROGRESS
)
93 req
->req
.status
= status
;
95 status
= req
->req
.status
;
98 dma_unmap_single(udc
->gadget
.dev
.parent
,
99 req
->req
.dma
, req
->req
.length
,
103 req
->req
.dma
= DMA_ADDR_INVALID
;
106 dma_sync_single_for_cpu(udc
->gadget
.dev
.parent
,
107 req
->req
.dma
, req
->req
.length
,
112 if (status
&& (status
!= -ESHUTDOWN
))
113 dev_vdbg(udc
->dev
, "complete %s req %p stat %d len %u/%u\n",
114 ep
->ep
.name
, &req
->req
, status
,
115 req
->req
.actual
, req
->req
.length
);
117 /* don't modify queue heads during completion callback */
119 spin_unlock(&udc
->lock
);
121 usb_gadget_giveback_request(&ep
->ep
, &req
->req
);
123 spin_lock(&udc
->lock
);
125 ep
->stopped
= stopped
;
128 /*-----------------------------------------------------------------
129 * nuke(): delete all requests related to this ep
130 *--------------------------------------------------------------*/
131 static void nuke(struct qe_ep
*ep
, int status
)
133 /* Whether this eq has request linked */
134 while (!list_empty(&ep
->queue
)) {
135 struct qe_req
*req
= NULL
;
136 req
= list_entry(ep
->queue
.next
, struct qe_req
, queue
);
138 done(ep
, req
, status
);
142 /*---------------------------------------------------------------------------*
143 * USB and Endpoint manipulate process, include parameter and register *
144 *---------------------------------------------------------------------------*/
145 /* @value: 1--set stall 0--clean stall */
146 static int qe_eprx_stall_change(struct qe_ep
*ep
, int value
)
149 u8 epnum
= ep
->epnum
;
150 struct qe_udc
*udc
= ep
->udc
;
152 tem_usep
= in_be16(&udc
->usb_regs
->usb_usep
[epnum
]);
153 tem_usep
= tem_usep
& ~USB_RHS_MASK
;
155 tem_usep
|= USB_RHS_STALL
;
156 else if (ep
->dir
== USB_DIR_IN
)
157 tem_usep
|= USB_RHS_IGNORE_OUT
;
159 out_be16(&udc
->usb_regs
->usb_usep
[epnum
], tem_usep
);
163 static int qe_eptx_stall_change(struct qe_ep
*ep
, int value
)
166 u8 epnum
= ep
->epnum
;
167 struct qe_udc
*udc
= ep
->udc
;
169 tem_usep
= in_be16(&udc
->usb_regs
->usb_usep
[epnum
]);
170 tem_usep
= tem_usep
& ~USB_THS_MASK
;
172 tem_usep
|= USB_THS_STALL
;
173 else if (ep
->dir
== USB_DIR_OUT
)
174 tem_usep
|= USB_THS_IGNORE_IN
;
176 out_be16(&udc
->usb_regs
->usb_usep
[epnum
], tem_usep
);
181 static int qe_ep0_stall(struct qe_udc
*udc
)
183 qe_eptx_stall_change(&udc
->eps
[0], 1);
184 qe_eprx_stall_change(&udc
->eps
[0], 1);
185 udc
->ep0_state
= WAIT_FOR_SETUP
;
190 static int qe_eprx_nack(struct qe_ep
*ep
)
192 u8 epnum
= ep
->epnum
;
193 struct qe_udc
*udc
= ep
->udc
;
195 if (ep
->state
== EP_STATE_IDLE
) {
196 /* Set the ep's nack */
197 clrsetbits_be16(&udc
->usb_regs
->usb_usep
[epnum
],
198 USB_RHS_MASK
, USB_RHS_NACK
);
200 /* Mask Rx and Busy interrupts */
201 clrbits16(&udc
->usb_regs
->usb_usbmr
,
202 (USB_E_RXB_MASK
| USB_E_BSY_MASK
));
204 ep
->state
= EP_STATE_NACK
;
209 static int qe_eprx_normal(struct qe_ep
*ep
)
211 struct qe_udc
*udc
= ep
->udc
;
213 if (ep
->state
== EP_STATE_NACK
) {
214 clrsetbits_be16(&udc
->usb_regs
->usb_usep
[ep
->epnum
],
215 USB_RTHS_MASK
, USB_THS_IGNORE_IN
);
217 /* Unmask RX interrupts */
218 out_be16(&udc
->usb_regs
->usb_usber
,
219 USB_E_BSY_MASK
| USB_E_RXB_MASK
);
220 setbits16(&udc
->usb_regs
->usb_usbmr
,
221 (USB_E_RXB_MASK
| USB_E_BSY_MASK
));
223 ep
->state
= EP_STATE_IDLE
;
230 static int qe_ep_cmd_stoptx(struct qe_ep
*ep
)
232 if (ep
->udc
->soc_type
== PORT_CPM
)
233 cpm_command(CPM_USB_STOP_TX
| (ep
->epnum
<< CPM_USB_EP_SHIFT
),
234 CPM_USB_STOP_TX_OPCODE
);
236 qe_issue_cmd(QE_USB_STOP_TX
, QE_CR_SUBBLOCK_USB
,
242 static int qe_ep_cmd_restarttx(struct qe_ep
*ep
)
244 if (ep
->udc
->soc_type
== PORT_CPM
)
245 cpm_command(CPM_USB_RESTART_TX
| (ep
->epnum
<<
246 CPM_USB_EP_SHIFT
), CPM_USB_RESTART_TX_OPCODE
);
248 qe_issue_cmd(QE_USB_RESTART_TX
, QE_CR_SUBBLOCK_USB
,
254 static int qe_ep_flushtxfifo(struct qe_ep
*ep
)
256 struct qe_udc
*udc
= ep
->udc
;
261 qe_ep_cmd_stoptx(ep
);
262 out_8(&udc
->usb_regs
->usb_uscom
,
263 USB_CMD_FLUSH_FIFO
| (USB_CMD_EP_MASK
& (ep
->epnum
)));
264 out_be16(&udc
->ep_param
[i
]->tbptr
, in_be16(&udc
->ep_param
[i
]->tbase
));
265 out_be32(&udc
->ep_param
[i
]->tstate
, 0);
266 out_be16(&udc
->ep_param
[i
]->tbcnt
, 0);
268 ep
->c_txbd
= ep
->txbase
;
269 ep
->n_txbd
= ep
->txbase
;
270 qe_ep_cmd_restarttx(ep
);
274 static int qe_ep_filltxfifo(struct qe_ep
*ep
)
276 struct qe_udc
*udc
= ep
->udc
;
278 out_8(&udc
->usb_regs
->usb_uscom
,
279 USB_CMD_STR_FIFO
| (USB_CMD_EP_MASK
& (ep
->epnum
)));
283 static int qe_epbds_reset(struct qe_udc
*udc
, int pipe_num
)
287 struct qe_bd __iomem
*bd
;
290 ep
= &udc
->eps
[pipe_num
];
292 if (ep
->dir
== USB_DIR_OUT
)
293 bdring_len
= USB_BDRING_LEN_RX
;
295 bdring_len
= USB_BDRING_LEN
;
298 for (i
= 0; i
< (bdring_len
- 1); i
++) {
299 out_be32((u32 __iomem
*)bd
, R_E
| R_I
);
302 out_be32((u32 __iomem
*)bd
, R_E
| R_I
| R_W
);
305 for (i
= 0; i
< USB_BDRING_LEN_TX
- 1; i
++) {
306 out_be32(&bd
->buf
, 0);
307 out_be32((u32 __iomem
*)bd
, 0);
310 out_be32((u32 __iomem
*)bd
, T_W
);
315 static int qe_ep_reset(struct qe_udc
*udc
, int pipe_num
)
320 ep
= &udc
->eps
[pipe_num
];
321 tmpusep
= in_be16(&udc
->usb_regs
->usb_usep
[pipe_num
]);
322 tmpusep
&= ~USB_RTHS_MASK
;
326 qe_ep_flushtxfifo(ep
);
329 tmpusep
|= USB_THS_IGNORE_IN
;
332 qe_ep_flushtxfifo(ep
);
333 tmpusep
|= USB_RHS_IGNORE_OUT
;
338 out_be16(&udc
->usb_regs
->usb_usep
[pipe_num
], tmpusep
);
340 qe_epbds_reset(udc
, pipe_num
);
345 static int qe_ep_toggledata01(struct qe_ep
*ep
)
351 static int qe_ep_bd_init(struct qe_udc
*udc
, unsigned char pipe_num
)
353 struct qe_ep
*ep
= &udc
->eps
[pipe_num
];
354 unsigned long tmp_addr
= 0;
355 struct usb_ep_para __iomem
*epparam
;
357 struct qe_bd __iomem
*bd
;
360 if (ep
->dir
== USB_DIR_OUT
)
361 bdring_len
= USB_BDRING_LEN_RX
;
363 bdring_len
= USB_BDRING_LEN
;
365 epparam
= udc
->ep_param
[pipe_num
];
366 /* alloc multi-ram for BD rings and set the ep parameters */
367 tmp_addr
= cpm_muram_alloc(sizeof(struct qe_bd
) * (bdring_len
+
368 USB_BDRING_LEN_TX
), QE_ALIGNMENT_OF_BD
);
369 if (IS_ERR_VALUE(tmp_addr
))
372 out_be16(&epparam
->rbase
, (u16
)tmp_addr
);
373 out_be16(&epparam
->tbase
, (u16
)(tmp_addr
+
374 (sizeof(struct qe_bd
) * bdring_len
)));
376 out_be16(&epparam
->rbptr
, in_be16(&epparam
->rbase
));
377 out_be16(&epparam
->tbptr
, in_be16(&epparam
->tbase
));
379 ep
->rxbase
= cpm_muram_addr(tmp_addr
);
380 ep
->txbase
= cpm_muram_addr(tmp_addr
+ (sizeof(struct qe_bd
)
382 ep
->n_rxbd
= ep
->rxbase
;
383 ep
->e_rxbd
= ep
->rxbase
;
384 ep
->n_txbd
= ep
->txbase
;
385 ep
->c_txbd
= ep
->txbase
;
386 ep
->data01
= 0; /* data0 */
388 /* Init TX and RX bds */
390 for (i
= 0; i
< bdring_len
- 1; i
++) {
391 out_be32(&bd
->buf
, 0);
392 out_be32((u32 __iomem
*)bd
, 0);
395 out_be32(&bd
->buf
, 0);
396 out_be32((u32 __iomem
*)bd
, R_W
);
399 for (i
= 0; i
< USB_BDRING_LEN_TX
- 1; i
++) {
400 out_be32(&bd
->buf
, 0);
401 out_be32((u32 __iomem
*)bd
, 0);
404 out_be32(&bd
->buf
, 0);
405 out_be32((u32 __iomem
*)bd
, T_W
);
410 static int qe_ep_rxbd_update(struct qe_ep
*ep
)
415 struct qe_bd __iomem
*bd
;
416 unsigned int bdring_len
;
418 if (ep
->rxbase
== NULL
)
423 ep
->rxframe
= kmalloc(sizeof(*ep
->rxframe
), GFP_ATOMIC
);
427 qe_frame_init(ep
->rxframe
);
429 if (ep
->dir
== USB_DIR_OUT
)
430 bdring_len
= USB_BDRING_LEN_RX
;
432 bdring_len
= USB_BDRING_LEN
;
434 size
= (ep
->ep
.maxpacket
+ USB_CRC_SIZE
+ 2) * (bdring_len
+ 1);
435 ep
->rxbuffer
= kzalloc(size
, GFP_ATOMIC
);
441 ep
->rxbuf_d
= virt_to_phys((void *)ep
->rxbuffer
);
442 if (ep
->rxbuf_d
== DMA_ADDR_INVALID
) {
443 ep
->rxbuf_d
= dma_map_single(ep
->udc
->gadget
.dev
.parent
,
449 dma_sync_single_for_device(ep
->udc
->gadget
.dev
.parent
,
455 size
= ep
->ep
.maxpacket
+ USB_CRC_SIZE
+ 2;
457 tmp
= (u32
)(((tmp
>> 2) << 2) + 4);
459 for (i
= 0; i
< bdring_len
- 1; i
++) {
460 out_be32(&bd
->buf
, tmp
);
461 out_be32((u32 __iomem
*)bd
, (R_E
| R_I
));
465 out_be32(&bd
->buf
, tmp
);
466 out_be32((u32 __iomem
*)bd
, (R_E
| R_I
| R_W
));
471 static int qe_ep_register_init(struct qe_udc
*udc
, unsigned char pipe_num
)
473 struct qe_ep
*ep
= &udc
->eps
[pipe_num
];
474 struct usb_ep_para __iomem
*epparam
;
479 epparam
= udc
->ep_param
[pipe_num
];
482 logepnum
= (ep
->ep
.desc
->bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK
);
483 usep
|= (logepnum
<< USB_EPNUM_SHIFT
);
485 switch (ep
->ep
.desc
->bmAttributes
& 0x03) {
486 case USB_ENDPOINT_XFER_BULK
:
487 usep
|= USB_TRANS_BULK
;
489 case USB_ENDPOINT_XFER_ISOC
:
490 usep
|= USB_TRANS_ISO
;
492 case USB_ENDPOINT_XFER_INT
:
493 usep
|= USB_TRANS_INT
;
496 usep
|= USB_TRANS_CTR
;
502 usep
|= USB_THS_IGNORE_IN
;
505 usep
|= USB_RHS_IGNORE_OUT
;
510 out_be16(&udc
->usb_regs
->usb_usep
[pipe_num
], usep
);
513 out_8(&epparam
->rbmr
, rtfcr
);
514 out_8(&epparam
->tbmr
, rtfcr
);
516 tmp
= (u16
)(ep
->ep
.maxpacket
+ USB_CRC_SIZE
);
517 /* MRBLR must be divisble by 4 */
518 tmp
= (u16
)(((tmp
>> 2) << 2) + 4);
519 out_be16(&epparam
->mrblr
, tmp
);
524 static int qe_ep_init(struct qe_udc
*udc
,
525 unsigned char pipe_num
,
526 const struct usb_endpoint_descriptor
*desc
)
528 struct qe_ep
*ep
= &udc
->eps
[pipe_num
];
533 max
= usb_endpoint_maxp(desc
);
535 /* check the max package size validate for this endpoint */
536 /* Refer to USB2.0 spec table 9-13,
539 switch (desc
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) {
540 case USB_ENDPOINT_XFER_BULK
:
541 if (strstr(ep
->ep
.name
, "-iso")
542 || strstr(ep
->ep
.name
, "-int"))
544 switch (udc
->gadget
.speed
) {
546 if ((max
== 128) || (max
== 256) || (max
== 512))
562 case USB_ENDPOINT_XFER_INT
:
563 if (strstr(ep
->ep
.name
, "-iso")) /* bulk is ok */
565 switch (udc
->gadget
.speed
) {
578 case USB_ENDPOINT_XFER_ISOC
:
579 if (strstr(ep
->ep
.name
, "-bulk")
580 || strstr(ep
->ep
.name
, "-int"))
582 switch (udc
->gadget
.speed
) {
593 case USB_ENDPOINT_XFER_CONTROL
:
594 if (strstr(ep
->ep
.name
, "-iso")
595 || strstr(ep
->ep
.name
, "-int"))
597 switch (udc
->gadget
.speed
) {
632 spin_lock_irqsave(&udc
->lock
, flags
);
634 /* initialize ep structure */
635 ep
->ep
.maxpacket
= max
;
636 ep
->tm
= (u8
)(desc
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
);
642 ep
->dir
= USB_DIR_BOTH
;
643 udc
->ep0_dir
= USB_DIR_OUT
;
644 udc
->ep0_state
= WAIT_FOR_SETUP
;
646 switch (desc
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
) {
648 ep
->dir
= USB_DIR_OUT
;
651 ep
->dir
= USB_DIR_IN
;
657 /* hardware special operation */
658 qe_ep_bd_init(udc
, pipe_num
);
659 if ((ep
->tm
== USBP_TM_CTL
) || (ep
->dir
== USB_DIR_OUT
)) {
660 reval
= qe_ep_rxbd_update(ep
);
665 if ((ep
->tm
== USBP_TM_CTL
) || (ep
->dir
== USB_DIR_IN
)) {
666 ep
->txframe
= kmalloc(sizeof(*ep
->txframe
), GFP_ATOMIC
);
669 qe_frame_init(ep
->txframe
);
672 qe_ep_register_init(udc
, pipe_num
);
674 /* Now HW will be NAKing transfers to that EP,
675 * until a buffer is queued to it. */
676 spin_unlock_irqrestore(&udc
->lock
, flags
);
683 spin_unlock_irqrestore(&udc
->lock
, flags
);
685 dev_err(udc
->dev
, "failed to initialize %s\n", ep
->ep
.name
);
689 static inline void qe_usb_enable(struct qe_udc
*udc
)
691 setbits8(&udc
->usb_regs
->usb_usmod
, USB_MODE_EN
);
694 static inline void qe_usb_disable(struct qe_udc
*udc
)
696 clrbits8(&udc
->usb_regs
->usb_usmod
, USB_MODE_EN
);
699 /*----------------------------------------------------------------------------*
700 * USB and EP basic manipulate function end *
701 *----------------------------------------------------------------------------*/
704 /******************************************************************************
705 UDC transmit and receive process
706 ******************************************************************************/
707 static void recycle_one_rxbd(struct qe_ep
*ep
)
711 bdstatus
= in_be32((u32 __iomem
*)ep
->e_rxbd
);
712 bdstatus
= R_I
| R_E
| (bdstatus
& R_W
);
713 out_be32((u32 __iomem
*)ep
->e_rxbd
, bdstatus
);
716 ep
->e_rxbd
= ep
->rxbase
;
721 static void recycle_rxbds(struct qe_ep
*ep
, unsigned char stopatnext
)
724 struct qe_bd __iomem
*bd
, *nextbd
;
725 unsigned char stop
= 0;
729 bdstatus
= in_be32((u32 __iomem
*)bd
);
731 while (!(bdstatus
& R_E
) && !(bdstatus
& BD_LENGTH_MASK
) && !stop
) {
732 bdstatus
= R_E
| R_I
| (bdstatus
& R_W
);
733 out_be32((u32 __iomem
*)bd
, bdstatus
);
740 bdstatus
= in_be32((u32 __iomem
*)bd
);
741 if (stopatnext
&& (bd
== nextbd
))
748 static void ep_recycle_rxbds(struct qe_ep
*ep
)
750 struct qe_bd __iomem
*bd
= ep
->n_rxbd
;
752 u8 epnum
= ep
->epnum
;
753 struct qe_udc
*udc
= ep
->udc
;
755 bdstatus
= in_be32((u32 __iomem
*)bd
);
756 if (!(bdstatus
& R_E
) && !(bdstatus
& BD_LENGTH_MASK
)) {
758 ((in_be16(&udc
->ep_param
[epnum
]->rbptr
) -
759 in_be16(&udc
->ep_param
[epnum
]->rbase
))
761 bdstatus
= in_be32((u32 __iomem
*)bd
);
769 recycle_rxbds(ep
, 0);
770 ep
->e_rxbd
= ep
->n_rxbd
;
772 recycle_rxbds(ep
, 1);
774 if (in_be16(&udc
->usb_regs
->usb_usber
) & USB_E_BSY_MASK
)
775 out_be16(&udc
->usb_regs
->usb_usber
, USB_E_BSY_MASK
);
777 if (ep
->has_data
<= 0 && (!list_empty(&ep
->queue
)))
783 static void setup_received_handle(struct qe_udc
*udc
,
784 struct usb_ctrlrequest
*setup
);
785 static int qe_ep_rxframe_handle(struct qe_ep
*ep
);
786 static void ep0_req_complete(struct qe_udc
*udc
, struct qe_req
*req
);
787 /* when BD PID is setup, handle the packet */
788 static int ep0_setup_handle(struct qe_udc
*udc
)
790 struct qe_ep
*ep
= &udc
->eps
[0];
791 struct qe_frame
*pframe
;
795 pframe
= ep
->rxframe
;
796 if ((frame_get_info(pframe
) & PID_SETUP
)
797 && (udc
->ep0_state
== WAIT_FOR_SETUP
)) {
798 fsize
= frame_get_length(pframe
);
799 if (unlikely(fsize
!= 8))
801 cp
= (u8
*)&udc
->local_setup_buff
;
802 memcpy(cp
, pframe
->data
, fsize
);
805 /* handle the usb command base on the usb_ctrlrequest */
806 setup_received_handle(udc
, &udc
->local_setup_buff
);
812 static int qe_ep0_rx(struct qe_udc
*udc
)
814 struct qe_ep
*ep
= &udc
->eps
[0];
815 struct qe_frame
*pframe
;
816 struct qe_bd __iomem
*bd
;
817 u32 bdstatus
, length
;
820 pframe
= ep
->rxframe
;
822 if (ep
->dir
== USB_DIR_IN
) {
823 dev_err(udc
->dev
, "ep0 not a control endpoint\n");
828 bdstatus
= in_be32((u32 __iomem
*)bd
);
829 length
= bdstatus
& BD_LENGTH_MASK
;
831 while (!(bdstatus
& R_E
) && length
) {
832 if ((bdstatus
& R_F
) && (bdstatus
& R_L
)
833 && !(bdstatus
& R_ERROR
)) {
834 if (length
== USB_CRC_SIZE
) {
835 udc
->ep0_state
= WAIT_FOR_SETUP
;
837 "receive a ZLP in status phase\n");
839 qe_frame_clean(pframe
);
840 vaddr
= (u32
)phys_to_virt(in_be32(&bd
->buf
));
841 frame_set_data(pframe
, (u8
*)vaddr
);
842 frame_set_length(pframe
,
843 (length
- USB_CRC_SIZE
));
844 frame_set_status(pframe
, FRAME_OK
);
845 switch (bdstatus
& R_PID
) {
847 frame_set_info(pframe
, PID_SETUP
);
850 frame_set_info(pframe
, PID_DATA1
);
853 frame_set_info(pframe
, PID_DATA0
);
857 if ((bdstatus
& R_PID
) == R_PID_SETUP
)
858 ep0_setup_handle(udc
);
860 qe_ep_rxframe_handle(ep
);
863 dev_err(udc
->dev
, "The receive frame with error!\n");
866 /* note: don't clear the rxbd's buffer address */
867 recycle_one_rxbd(ep
);
875 bdstatus
= in_be32((u32 __iomem
*)bd
);
876 length
= bdstatus
& BD_LENGTH_MASK
;
885 static int qe_ep_rxframe_handle(struct qe_ep
*ep
)
887 struct qe_frame
*pframe
;
893 pframe
= ep
->rxframe
;
895 if (frame_get_info(pframe
) & PID_DATA1
)
898 if (framepid
!= ep
->data01
) {
899 dev_err(ep
->udc
->dev
, "the data01 error!\n");
903 fsize
= frame_get_length(pframe
);
904 if (list_empty(&ep
->queue
)) {
905 dev_err(ep
->udc
->dev
, "the %s have no requeue!\n", ep
->name
);
907 req
= list_entry(ep
->queue
.next
, struct qe_req
, queue
);
909 cp
= (u8
*)(req
->req
.buf
) + req
->req
.actual
;
911 memcpy(cp
, pframe
->data
, fsize
);
912 req
->req
.actual
+= fsize
;
913 if ((fsize
< ep
->ep
.maxpacket
) ||
914 (req
->req
.actual
>= req
->req
.length
)) {
916 ep0_req_complete(ep
->udc
, req
);
919 if (list_empty(&ep
->queue
) && ep
->epnum
!= 0)
925 qe_ep_toggledata01(ep
);
930 static void ep_rx_tasklet(unsigned long data
)
932 struct qe_udc
*udc
= (struct qe_udc
*)data
;
934 struct qe_frame
*pframe
;
935 struct qe_bd __iomem
*bd
;
937 u32 bdstatus
, length
;
940 spin_lock_irqsave(&udc
->lock
, flags
);
942 for (i
= 1; i
< USB_MAX_ENDPOINTS
; i
++) {
945 if (ep
->dir
== USB_DIR_IN
|| ep
->enable_tasklet
== 0) {
947 "This is a transmit ep or disable tasklet!\n");
951 pframe
= ep
->rxframe
;
953 bdstatus
= in_be32((u32 __iomem
*)bd
);
954 length
= bdstatus
& BD_LENGTH_MASK
;
956 while (!(bdstatus
& R_E
) && length
) {
957 if (list_empty(&ep
->queue
)) {
960 "The rxep have noreq %d\n",
965 if ((bdstatus
& R_F
) && (bdstatus
& R_L
)
966 && !(bdstatus
& R_ERROR
)) {
967 qe_frame_clean(pframe
);
968 vaddr
= (u32
)phys_to_virt(in_be32(&bd
->buf
));
969 frame_set_data(pframe
, (u8
*)vaddr
);
970 frame_set_length(pframe
,
971 (length
- USB_CRC_SIZE
));
972 frame_set_status(pframe
, FRAME_OK
);
973 switch (bdstatus
& R_PID
) {
975 frame_set_info(pframe
, PID_DATA1
);
978 frame_set_info(pframe
, PID_SETUP
);
981 frame_set_info(pframe
, PID_DATA0
);
984 /* handle the rx frame */
985 qe_ep_rxframe_handle(ep
);
988 "error in received frame\n");
990 /* note: don't clear the rxbd's buffer address */
991 /*clear the length */
992 out_be32((u32 __iomem
*)bd
, bdstatus
& BD_STATUS_MASK
);
994 if (!(ep
->localnack
))
995 recycle_one_rxbd(ep
);
1003 bdstatus
= in_be32((u32 __iomem
*)bd
);
1004 length
= bdstatus
& BD_LENGTH_MASK
;
1010 ep_recycle_rxbds(ep
);
1012 ep
->enable_tasklet
= 0;
1015 spin_unlock_irqrestore(&udc
->lock
, flags
);
1018 static int qe_ep_rx(struct qe_ep
*ep
)
1021 struct qe_frame
*pframe
;
1022 struct qe_bd __iomem
*bd
;
1023 u16 swoffs
, ucoffs
, emptybds
;
1026 pframe
= ep
->rxframe
;
1028 if (ep
->dir
== USB_DIR_IN
) {
1029 dev_err(udc
->dev
, "transmit ep in rx function\n");
1035 swoffs
= (u16
)(bd
- ep
->rxbase
);
1036 ucoffs
= (u16
)((in_be16(&udc
->ep_param
[ep
->epnum
]->rbptr
) -
1037 in_be16(&udc
->ep_param
[ep
->epnum
]->rbase
)) >> 3);
1038 if (swoffs
< ucoffs
)
1039 emptybds
= USB_BDRING_LEN_RX
- ucoffs
+ swoffs
;
1041 emptybds
= swoffs
- ucoffs
;
1043 if (emptybds
< MIN_EMPTY_BDS
) {
1046 dev_vdbg(udc
->dev
, "%d empty bds, send NACK\n", emptybds
);
1048 ep
->has_data
= USB_BDRING_LEN_RX
- emptybds
;
1050 if (list_empty(&ep
->queue
)) {
1052 dev_vdbg(udc
->dev
, "The rxep have no req queued with %d BDs\n",
1057 tasklet_schedule(&udc
->rx_tasklet
);
1058 ep
->enable_tasklet
= 1;
1063 /* send data from a frame, no matter what tx_req */
1064 static int qe_ep_tx(struct qe_ep
*ep
, struct qe_frame
*frame
)
1066 struct qe_udc
*udc
= ep
->udc
;
1067 struct qe_bd __iomem
*bd
;
1069 u32 bdstatus
, pidmask
;
1072 if (ep
->dir
== USB_DIR_OUT
) {
1073 dev_err(udc
->dev
, "receive ep passed to tx function\n");
1077 /* Disable the Tx interrupt */
1078 saveusbmr
= in_be16(&udc
->usb_regs
->usb_usbmr
);
1079 out_be16(&udc
->usb_regs
->usb_usbmr
,
1080 saveusbmr
& ~(USB_E_TXB_MASK
| USB_E_TXE_MASK
));
1083 bdstatus
= in_be32((u32 __iomem
*)bd
);
1085 if (!(bdstatus
& (T_R
| BD_LENGTH_MASK
))) {
1086 if (frame_get_length(frame
) == 0) {
1087 frame_set_data(frame
, udc
->nullbuf
);
1088 frame_set_length(frame
, 2);
1089 frame
->info
|= (ZLP
| NO_CRC
);
1090 dev_vdbg(udc
->dev
, "the frame size = 0\n");
1092 paddr
= virt_to_phys((void *)frame
->data
);
1093 out_be32(&bd
->buf
, paddr
);
1094 bdstatus
= (bdstatus
&T_W
);
1095 if (!(frame_get_info(frame
) & NO_CRC
))
1096 bdstatus
|= T_R
| T_I
| T_L
| T_TC
1097 | frame_get_length(frame
);
1099 bdstatus
|= T_R
| T_I
| T_L
| frame_get_length(frame
);
1101 /* if the packet is a ZLP in status phase */
1102 if ((ep
->epnum
== 0) && (udc
->ep0_state
== DATA_STATE_NEED_ZLP
))
1106 pidmask
= T_PID_DATA1
;
1107 frame
->info
|= PID_DATA1
;
1109 pidmask
= T_PID_DATA0
;
1110 frame
->info
|= PID_DATA0
;
1113 bdstatus
|= pidmask
;
1114 out_be32((u32 __iomem
*)bd
, bdstatus
);
1115 qe_ep_filltxfifo(ep
);
1117 /* enable the TX interrupt */
1118 out_be16(&udc
->usb_regs
->usb_usbmr
, saveusbmr
);
1120 qe_ep_toggledata01(ep
);
1122 ep
->n_txbd
= ep
->txbase
;
1128 out_be16(&udc
->usb_regs
->usb_usbmr
, saveusbmr
);
1129 dev_vdbg(udc
->dev
, "The tx bd is not ready!\n");
1134 /* when a bd was transmitted, the function can
1135 * handle the tx_req, not include ep0 */
1136 static int txcomplete(struct qe_ep
*ep
, unsigned char restart
)
1138 if (ep
->tx_req
!= NULL
) {
1139 struct qe_req
*req
= ep
->tx_req
;
1140 unsigned zlp
= 0, last_len
= 0;
1142 last_len
= min_t(unsigned, req
->req
.length
- ep
->sent
,
1146 int asent
= ep
->last
;
1153 /* zlp needed when req->re.zero is set */
1154 if (req
->req
.zero
) {
1155 if (last_len
== 0 ||
1156 (req
->req
.length
% ep
->ep
.maxpacket
) != 0)
1163 /* a request already were transmitted completely */
1164 if (((ep
->tx_req
->req
.length
- ep
->sent
) <= 0) && !zlp
) {
1165 done(ep
, ep
->tx_req
, 0);
1172 /* we should gain a new tx_req fot this endpoint */
1173 if (ep
->tx_req
== NULL
) {
1174 if (!list_empty(&ep
->queue
)) {
1175 ep
->tx_req
= list_entry(ep
->queue
.next
, struct qe_req
,
1185 /* give a frame and a tx_req, send some data */
1186 static int qe_usb_senddata(struct qe_ep
*ep
, struct qe_frame
*frame
)
1191 qe_frame_clean(frame
);
1192 size
= min_t(u32
, (ep
->tx_req
->req
.length
- ep
->sent
),
1194 buf
= (u8
*)ep
->tx_req
->req
.buf
+ ep
->sent
;
1197 ep
->tx_req
->req
.actual
+= size
;
1198 frame_set_data(frame
, buf
);
1199 frame_set_length(frame
, size
);
1200 frame_set_status(frame
, FRAME_OK
);
1201 frame_set_info(frame
, 0);
1202 return qe_ep_tx(ep
, frame
);
1207 /* give a frame struct,send a ZLP */
1208 static int sendnulldata(struct qe_ep
*ep
, struct qe_frame
*frame
, uint infor
)
1210 struct qe_udc
*udc
= ep
->udc
;
1215 qe_frame_clean(frame
);
1216 frame_set_data(frame
, (u8
*)udc
->nullbuf
);
1217 frame_set_length(frame
, 2);
1218 frame_set_status(frame
, FRAME_OK
);
1219 frame_set_info(frame
, (ZLP
| NO_CRC
| infor
));
1221 return qe_ep_tx(ep
, frame
);
1224 static int frame_create_tx(struct qe_ep
*ep
, struct qe_frame
*frame
)
1226 struct qe_req
*req
= ep
->tx_req
;
1232 if ((req
->req
.length
- ep
->sent
) > 0)
1233 reval
= qe_usb_senddata(ep
, frame
);
1235 reval
= sendnulldata(ep
, frame
, 0);
1240 /* if direction is DIR_IN, the status is Device->Host
1241 * if direction is DIR_OUT, the status transaction is Device<-Host
1242 * in status phase, udc create a request and gain status */
1243 static int ep0_prime_status(struct qe_udc
*udc
, int direction
)
1246 struct qe_ep
*ep
= &udc
->eps
[0];
1248 if (direction
== USB_DIR_IN
) {
1249 udc
->ep0_state
= DATA_STATE_NEED_ZLP
;
1250 udc
->ep0_dir
= USB_DIR_IN
;
1251 sendnulldata(ep
, ep
->txframe
, SETUP_STATUS
| NO_REQ
);
1253 udc
->ep0_dir
= USB_DIR_OUT
;
1254 udc
->ep0_state
= WAIT_FOR_OUT_STATUS
;
1260 /* a request complete in ep0, whether gadget request or udc request */
1261 static void ep0_req_complete(struct qe_udc
*udc
, struct qe_req
*req
)
1263 struct qe_ep
*ep
= &udc
->eps
[0];
1264 /* because usb and ep's status already been set in ch9setaddress() */
1266 switch (udc
->ep0_state
) {
1267 case DATA_STATE_XMIT
:
1269 /* receive status phase */
1270 if (ep0_prime_status(udc
, USB_DIR_OUT
))
1274 case DATA_STATE_NEED_ZLP
:
1276 udc
->ep0_state
= WAIT_FOR_SETUP
;
1279 case DATA_STATE_RECV
:
1281 /* send status phase */
1282 if (ep0_prime_status(udc
, USB_DIR_IN
))
1286 case WAIT_FOR_OUT_STATUS
:
1288 udc
->ep0_state
= WAIT_FOR_SETUP
;
1291 case WAIT_FOR_SETUP
:
1292 dev_vdbg(udc
->dev
, "Unexpected interrupt\n");
1301 static int ep0_txcomplete(struct qe_ep
*ep
, unsigned char restart
)
1303 struct qe_req
*tx_req
= NULL
;
1304 struct qe_frame
*frame
= ep
->txframe
;
1306 if ((frame_get_info(frame
) & (ZLP
| NO_REQ
)) == (ZLP
| NO_REQ
)) {
1308 ep
->udc
->ep0_state
= WAIT_FOR_SETUP
;
1310 sendnulldata(ep
, ep
->txframe
, SETUP_STATUS
| NO_REQ
);
1314 tx_req
= ep
->tx_req
;
1315 if (tx_req
!= NULL
) {
1317 int asent
= ep
->last
;
1324 /* a request already were transmitted completely */
1325 if ((ep
->tx_req
->req
.length
- ep
->sent
) <= 0) {
1326 ep
->tx_req
->req
.actual
= (unsigned int)ep
->sent
;
1327 ep0_req_complete(ep
->udc
, ep
->tx_req
);
1333 dev_vdbg(ep
->udc
->dev
, "the ep0_controller have no req\n");
1339 static int ep0_txframe_handle(struct qe_ep
*ep
)
1341 /* if have error, transmit again */
1342 if (frame_get_status(ep
->txframe
) & FRAME_ERROR
) {
1343 qe_ep_flushtxfifo(ep
);
1344 dev_vdbg(ep
->udc
->dev
, "The EP0 transmit data have error!\n");
1345 if (frame_get_info(ep
->txframe
) & PID_DATA0
)
1350 ep0_txcomplete(ep
, 1);
1352 ep0_txcomplete(ep
, 0);
1354 frame_create_tx(ep
, ep
->txframe
);
1358 static int qe_ep0_txconf(struct qe_ep
*ep
)
1360 struct qe_bd __iomem
*bd
;
1361 struct qe_frame
*pframe
;
1365 bdstatus
= in_be32((u32 __iomem
*)bd
);
1366 while (!(bdstatus
& T_R
) && (bdstatus
& ~T_W
)) {
1367 pframe
= ep
->txframe
;
1369 /* clear and recycle the BD */
1370 out_be32((u32 __iomem
*)bd
, bdstatus
& T_W
);
1371 out_be32(&bd
->buf
, 0);
1373 ep
->c_txbd
= ep
->txbase
;
1377 if (ep
->c_txbd
== ep
->n_txbd
) {
1378 if (bdstatus
& DEVICE_T_ERROR
) {
1379 frame_set_status(pframe
, FRAME_ERROR
);
1380 if (bdstatus
& T_TO
)
1381 pframe
->status
|= TX_ER_TIMEOUT
;
1382 if (bdstatus
& T_UN
)
1383 pframe
->status
|= TX_ER_UNDERUN
;
1385 ep0_txframe_handle(ep
);
1389 bdstatus
= in_be32((u32 __iomem
*)bd
);
1395 static int ep_txframe_handle(struct qe_ep
*ep
)
1397 if (frame_get_status(ep
->txframe
) & FRAME_ERROR
) {
1398 qe_ep_flushtxfifo(ep
);
1399 dev_vdbg(ep
->udc
->dev
, "The EP0 transmit data have error!\n");
1400 if (frame_get_info(ep
->txframe
) & PID_DATA0
)
1409 frame_create_tx(ep
, ep
->txframe
); /* send the data */
1413 /* confirm the already trainsmited bd */
1414 static int qe_ep_txconf(struct qe_ep
*ep
)
1416 struct qe_bd __iomem
*bd
;
1417 struct qe_frame
*pframe
= NULL
;
1419 unsigned char breakonrxinterrupt
= 0;
1422 bdstatus
= in_be32((u32 __iomem
*)bd
);
1423 while (!(bdstatus
& T_R
) && (bdstatus
& ~T_W
)) {
1424 pframe
= ep
->txframe
;
1425 if (bdstatus
& DEVICE_T_ERROR
) {
1426 frame_set_status(pframe
, FRAME_ERROR
);
1427 if (bdstatus
& T_TO
)
1428 pframe
->status
|= TX_ER_TIMEOUT
;
1429 if (bdstatus
& T_UN
)
1430 pframe
->status
|= TX_ER_UNDERUN
;
1433 /* clear and recycle the BD */
1434 out_be32((u32 __iomem
*)bd
, bdstatus
& T_W
);
1435 out_be32(&bd
->buf
, 0);
1437 ep
->c_txbd
= ep
->txbase
;
1441 /* handle the tx frame */
1442 ep_txframe_handle(ep
);
1444 bdstatus
= in_be32((u32 __iomem
*)bd
);
1446 if (breakonrxinterrupt
)
1452 /* Add a request in queue, and try to transmit a packet */
1453 static int ep_req_send(struct qe_ep
*ep
, struct qe_req
*req
)
1457 if (ep
->tx_req
== NULL
) {
1460 txcomplete(ep
, 0); /* can gain a new tx_req */
1461 reval
= frame_create_tx(ep
, ep
->txframe
);
1466 /* Maybe this is a good ideal */
1467 static int ep_req_rx(struct qe_ep
*ep
, struct qe_req
*req
)
1469 struct qe_udc
*udc
= ep
->udc
;
1470 struct qe_frame
*pframe
= NULL
;
1471 struct qe_bd __iomem
*bd
;
1472 u32 bdstatus
, length
;
1478 if (list_empty(&ep
->queue
)) {
1479 dev_vdbg(udc
->dev
, "the req already finish!\n");
1482 pframe
= ep
->rxframe
;
1485 bdstatus
= in_be32((u32 __iomem
*)bd
);
1486 length
= bdstatus
& BD_LENGTH_MASK
;
1488 while (!(bdstatus
& R_E
) && length
) {
1491 if ((bdstatus
& R_F
) && (bdstatus
& R_L
)
1492 && !(bdstatus
& R_ERROR
)) {
1493 qe_frame_clean(pframe
);
1494 vaddr
= (u32
)phys_to_virt(in_be32(&bd
->buf
));
1495 frame_set_data(pframe
, (u8
*)vaddr
);
1496 frame_set_length(pframe
, (length
- USB_CRC_SIZE
));
1497 frame_set_status(pframe
, FRAME_OK
);
1498 switch (bdstatus
& R_PID
) {
1500 frame_set_info(pframe
, PID_DATA1
); break;
1502 frame_set_info(pframe
, PID_DATA0
); break;
1504 /* handle the rx frame */
1506 if (frame_get_info(pframe
) & PID_DATA1
)
1511 if (framepid
!= ep
->data01
) {
1512 dev_vdbg(udc
->dev
, "the data01 error!\n");
1514 fsize
= frame_get_length(pframe
);
1516 cp
= (u8
*)(req
->req
.buf
) + req
->req
.actual
;
1518 memcpy(cp
, pframe
->data
, fsize
);
1519 req
->req
.actual
+= fsize
;
1520 if ((fsize
< ep
->ep
.maxpacket
)
1521 || (req
->req
.actual
>=
1525 if (list_empty(&ep
->queue
))
1529 qe_ep_toggledata01(ep
);
1532 dev_err(udc
->dev
, "The receive frame with error!\n");
1535 /* note: don't clear the rxbd's buffer address *
1536 * only Clear the length */
1537 out_be32((u32 __iomem
*)bd
, (bdstatus
& BD_STATUS_MASK
));
1546 bdstatus
= in_be32((u32 __iomem
*)bd
);
1547 length
= bdstatus
& BD_LENGTH_MASK
;
1551 ep_recycle_rxbds(ep
);
1556 /* only add the request in queue */
1557 static int ep_req_receive(struct qe_ep
*ep
, struct qe_req
*req
)
1559 if (ep
->state
== EP_STATE_NACK
) {
1560 if (ep
->has_data
<= 0) {
1561 /* Enable rx and unmask rx interrupt */
1564 /* Copy the exist BD data */
1572 /********************************************************************
1573 Internal Used Function End
1574 ********************************************************************/
1576 /*-----------------------------------------------------------------------
1577 Endpoint Management Functions For Gadget
1578 -----------------------------------------------------------------------*/
1579 static int qe_ep_enable(struct usb_ep
*_ep
,
1580 const struct usb_endpoint_descriptor
*desc
)
1585 unsigned char epnum
;
1587 ep
= container_of(_ep
, struct qe_ep
, ep
);
1589 /* catch various bogus parameters */
1590 if (!_ep
|| !desc
|| _ep
->name
== ep_name
[0] ||
1591 (desc
->bDescriptorType
!= USB_DT_ENDPOINT
))
1595 if (!udc
->driver
|| (udc
->gadget
.speed
== USB_SPEED_UNKNOWN
))
1598 epnum
= (u8
)desc
->bEndpointAddress
& 0xF;
1600 retval
= qe_ep_init(udc
, epnum
, desc
);
1602 cpm_muram_free(cpm_muram_offset(ep
->rxbase
));
1603 dev_dbg(udc
->dev
, "enable ep%d failed\n", ep
->epnum
);
1606 dev_dbg(udc
->dev
, "enable ep%d successful\n", ep
->epnum
);
1610 static int qe_ep_disable(struct usb_ep
*_ep
)
1614 unsigned long flags
;
1617 ep
= container_of(_ep
, struct qe_ep
, ep
);
1620 if (!_ep
|| !ep
->ep
.desc
) {
1621 dev_dbg(udc
->dev
, "%s not enabled\n", _ep
? ep
->ep
.name
: NULL
);
1625 spin_lock_irqsave(&udc
->lock
, flags
);
1626 /* Nuke all pending requests (does flush) */
1627 nuke(ep
, -ESHUTDOWN
);
1631 qe_ep_reset(udc
, ep
->epnum
);
1632 spin_unlock_irqrestore(&udc
->lock
, flags
);
1634 cpm_muram_free(cpm_muram_offset(ep
->rxbase
));
1636 if (ep
->dir
== USB_DIR_OUT
)
1637 size
= (ep
->ep
.maxpacket
+ USB_CRC_SIZE
+ 2) *
1638 (USB_BDRING_LEN_RX
+ 1);
1640 size
= (ep
->ep
.maxpacket
+ USB_CRC_SIZE
+ 2) *
1641 (USB_BDRING_LEN
+ 1);
1643 if (ep
->dir
!= USB_DIR_IN
) {
1646 dma_unmap_single(udc
->gadget
.dev
.parent
,
1649 ep
->rxbuf_d
= DMA_ADDR_INVALID
;
1651 dma_sync_single_for_cpu(
1652 udc
->gadget
.dev
.parent
,
1656 kfree(ep
->rxbuffer
);
1659 if (ep
->dir
!= USB_DIR_OUT
)
1662 dev_dbg(udc
->dev
, "disabled %s OK\n", _ep
->name
);
1666 static struct usb_request
*qe_alloc_request(struct usb_ep
*_ep
, gfp_t gfp_flags
)
1670 req
= kzalloc(sizeof(*req
), gfp_flags
);
1674 req
->req
.dma
= DMA_ADDR_INVALID
;
1676 INIT_LIST_HEAD(&req
->queue
);
1681 static void qe_free_request(struct usb_ep
*_ep
, struct usb_request
*_req
)
1685 req
= container_of(_req
, struct qe_req
, req
);
1691 static int __qe_ep_queue(struct usb_ep
*_ep
, struct usb_request
*_req
)
1693 struct qe_ep
*ep
= container_of(_ep
, struct qe_ep
, ep
);
1694 struct qe_req
*req
= container_of(_req
, struct qe_req
, req
);
1699 /* catch various bogus parameters */
1700 if (!_req
|| !req
->req
.complete
|| !req
->req
.buf
1701 || !list_empty(&req
->queue
)) {
1702 dev_dbg(udc
->dev
, "bad params\n");
1705 if (!_ep
|| (!ep
->ep
.desc
&& ep_index(ep
))) {
1706 dev_dbg(udc
->dev
, "bad ep\n");
1710 if (!udc
->driver
|| udc
->gadget
.speed
== USB_SPEED_UNKNOWN
)
1715 /* map virtual address to hardware */
1716 if (req
->req
.dma
== DMA_ADDR_INVALID
) {
1717 req
->req
.dma
= dma_map_single(ep
->udc
->gadget
.dev
.parent
,
1725 dma_sync_single_for_device(ep
->udc
->gadget
.dev
.parent
,
1726 req
->req
.dma
, req
->req
.length
,
1733 req
->req
.status
= -EINPROGRESS
;
1734 req
->req
.actual
= 0;
1736 list_add_tail(&req
->queue
, &ep
->queue
);
1737 dev_vdbg(udc
->dev
, "gadget have request in %s! %d\n",
1738 ep
->name
, req
->req
.length
);
1740 /* push the request to device */
1742 reval
= ep_req_send(ep
, req
);
1745 if (ep_index(ep
) == 0 && req
->req
.length
> 0) {
1747 udc
->ep0_state
= DATA_STATE_XMIT
;
1749 udc
->ep0_state
= DATA_STATE_RECV
;
1752 if (ep
->dir
== USB_DIR_OUT
)
1753 reval
= ep_req_receive(ep
, req
);
1758 /* queues (submits) an I/O request to an endpoint */
1759 static int qe_ep_queue(struct usb_ep
*_ep
, struct usb_request
*_req
,
1762 struct qe_ep
*ep
= container_of(_ep
, struct qe_ep
, ep
);
1763 struct qe_udc
*udc
= ep
->udc
;
1764 unsigned long flags
;
1767 spin_lock_irqsave(&udc
->lock
, flags
);
1768 ret
= __qe_ep_queue(_ep
, _req
);
1769 spin_unlock_irqrestore(&udc
->lock
, flags
);
1773 /* dequeues (cancels, unlinks) an I/O request from an endpoint */
1774 static int qe_ep_dequeue(struct usb_ep
*_ep
, struct usb_request
*_req
)
1776 struct qe_ep
*ep
= container_of(_ep
, struct qe_ep
, ep
);
1778 unsigned long flags
;
1783 spin_lock_irqsave(&ep
->udc
->lock
, flags
);
1785 /* make sure it's actually queued on this endpoint */
1786 list_for_each_entry(req
, &ep
->queue
, queue
) {
1787 if (&req
->req
== _req
)
1791 if (&req
->req
!= _req
) {
1792 spin_unlock_irqrestore(&ep
->udc
->lock
, flags
);
1796 done(ep
, req
, -ECONNRESET
);
1798 spin_unlock_irqrestore(&ep
->udc
->lock
, flags
);
1802 /*-----------------------------------------------------------------
1803 * modify the endpoint halt feature
1804 * @ep: the non-isochronous endpoint being stalled
1805 * @value: 1--set halt 0--clear halt
1806 * Returns zero, or a negative error code.
1807 *----------------------------------------------------------------*/
1808 static int qe_ep_set_halt(struct usb_ep
*_ep
, int value
)
1811 unsigned long flags
;
1812 int status
= -EOPNOTSUPP
;
1815 ep
= container_of(_ep
, struct qe_ep
, ep
);
1816 if (!_ep
|| !ep
->ep
.desc
) {
1822 /* Attempt to halt IN ep will fail if any transfer requests
1823 * are still queue */
1824 if (value
&& ep_is_in(ep
) && !list_empty(&ep
->queue
)) {
1830 spin_lock_irqsave(&ep
->udc
->lock
, flags
);
1831 qe_eptx_stall_change(ep
, value
);
1832 qe_eprx_stall_change(ep
, value
);
1833 spin_unlock_irqrestore(&ep
->udc
->lock
, flags
);
1835 if (ep
->epnum
== 0) {
1836 udc
->ep0_state
= WAIT_FOR_SETUP
;
1840 /* set data toggle to DATA0 on clear halt */
1844 dev_vdbg(udc
->dev
, "%s %s halt stat %d\n", ep
->ep
.name
,
1845 value
? "set" : "clear", status
);
1850 static const struct usb_ep_ops qe_ep_ops
= {
1851 .enable
= qe_ep_enable
,
1852 .disable
= qe_ep_disable
,
1854 .alloc_request
= qe_alloc_request
,
1855 .free_request
= qe_free_request
,
1857 .queue
= qe_ep_queue
,
1858 .dequeue
= qe_ep_dequeue
,
1860 .set_halt
= qe_ep_set_halt
,
1863 /*------------------------------------------------------------------------
1864 Gadget Driver Layer Operations
1865 ------------------------------------------------------------------------*/
1867 /* Get the current frame number */
1868 static int qe_get_frame(struct usb_gadget
*gadget
)
1870 struct qe_udc
*udc
= container_of(gadget
, struct qe_udc
, gadget
);
1873 tmp
= in_be16(&udc
->usb_param
->frame_n
);
1875 return tmp
& 0x07ff;
1879 static int fsl_qe_start(struct usb_gadget
*gadget
,
1880 struct usb_gadget_driver
*driver
);
1881 static int fsl_qe_stop(struct usb_gadget
*gadget
);
1883 /* defined in usb_gadget.h */
1884 static const struct usb_gadget_ops qe_gadget_ops
= {
1885 .get_frame
= qe_get_frame
,
1886 .udc_start
= fsl_qe_start
,
1887 .udc_stop
= fsl_qe_stop
,
1890 /*-------------------------------------------------------------------------
1891 USB ep0 Setup process in BUS Enumeration
1892 -------------------------------------------------------------------------*/
1893 static int udc_reset_ep_queue(struct qe_udc
*udc
, u8 pipe
)
1895 struct qe_ep
*ep
= &udc
->eps
[pipe
];
1897 nuke(ep
, -ECONNRESET
);
1902 static int reset_queues(struct qe_udc
*udc
)
1906 for (pipe
= 0; pipe
< USB_MAX_ENDPOINTS
; pipe
++)
1907 udc_reset_ep_queue(udc
, pipe
);
1909 /* report disconnect; the driver is already quiesced */
1910 spin_unlock(&udc
->lock
);
1911 usb_gadget_udc_reset(&udc
->gadget
, udc
->driver
);
1912 spin_lock(&udc
->lock
);
1917 static void ch9setaddress(struct qe_udc
*udc
, u16 value
, u16 index
,
1920 /* Save the new address to device struct */
1921 udc
->device_address
= (u8
) value
;
1922 /* Update usb state */
1923 udc
->usb_state
= USB_STATE_ADDRESS
;
1925 /* Status phase , send a ZLP */
1926 if (ep0_prime_status(udc
, USB_DIR_IN
))
1930 static void ownercomplete(struct usb_ep
*_ep
, struct usb_request
*_req
)
1932 struct qe_req
*req
= container_of(_req
, struct qe_req
, req
);
1934 req
->req
.buf
= NULL
;
1938 static void ch9getstatus(struct qe_udc
*udc
, u8 request_type
, u16 value
,
1939 u16 index
, u16 length
)
1947 if ((request_type
& USB_RECIP_MASK
) == USB_RECIP_DEVICE
) {
1948 /* Get device status */
1949 usb_status
= 1 << USB_DEVICE_SELF_POWERED
;
1950 } else if ((request_type
& USB_RECIP_MASK
) == USB_RECIP_INTERFACE
) {
1951 /* Get interface status */
1952 /* We don't have interface information in udc driver */
1954 } else if ((request_type
& USB_RECIP_MASK
) == USB_RECIP_ENDPOINT
) {
1955 /* Get endpoint status */
1956 int pipe
= index
& USB_ENDPOINT_NUMBER_MASK
;
1957 struct qe_ep
*target_ep
= &udc
->eps
[pipe
];
1960 /* stall if endpoint doesn't exist */
1961 if (!target_ep
->ep
.desc
)
1964 usep
= in_be16(&udc
->usb_regs
->usb_usep
[pipe
]);
1965 if (index
& USB_DIR_IN
) {
1966 if (target_ep
->dir
!= USB_DIR_IN
)
1968 if ((usep
& USB_THS_MASK
) == USB_THS_STALL
)
1969 usb_status
= 1 << USB_ENDPOINT_HALT
;
1971 if (target_ep
->dir
!= USB_DIR_OUT
)
1973 if ((usep
& USB_RHS_MASK
) == USB_RHS_STALL
)
1974 usb_status
= 1 << USB_ENDPOINT_HALT
;
1978 req
= container_of(qe_alloc_request(&ep
->ep
, GFP_KERNEL
),
1979 struct qe_req
, req
);
1980 req
->req
.length
= 2;
1981 req
->req
.buf
= udc
->statusbuf
;
1982 *(u16
*)req
->req
.buf
= cpu_to_le16(usb_status
);
1983 req
->req
.status
= -EINPROGRESS
;
1984 req
->req
.actual
= 0;
1985 req
->req
.complete
= ownercomplete
;
1987 udc
->ep0_dir
= USB_DIR_IN
;
1990 status
= __qe_ep_queue(&ep
->ep
, &req
->req
);
1995 dev_err(udc
->dev
, "Can't respond to getstatus request \n");
1999 /* only handle the setup request, suppose the device in normal status */
2000 static void setup_received_handle(struct qe_udc
*udc
,
2001 struct usb_ctrlrequest
*setup
)
2003 /* Fix Endian (udc->local_setup_buff is cpu Endian now)*/
2004 u16 wValue
= le16_to_cpu(setup
->wValue
);
2005 u16 wIndex
= le16_to_cpu(setup
->wIndex
);
2006 u16 wLength
= le16_to_cpu(setup
->wLength
);
2008 /* clear the previous request in the ep0 */
2009 udc_reset_ep_queue(udc
, 0);
2011 if (setup
->bRequestType
& USB_DIR_IN
)
2012 udc
->ep0_dir
= USB_DIR_IN
;
2014 udc
->ep0_dir
= USB_DIR_OUT
;
2016 switch (setup
->bRequest
) {
2017 case USB_REQ_GET_STATUS
:
2018 /* Data+Status phase form udc */
2019 if ((setup
->bRequestType
& (USB_DIR_IN
| USB_TYPE_MASK
))
2020 != (USB_DIR_IN
| USB_TYPE_STANDARD
))
2022 ch9getstatus(udc
, setup
->bRequestType
, wValue
, wIndex
,
2026 case USB_REQ_SET_ADDRESS
:
2027 /* Status phase from udc */
2028 if (setup
->bRequestType
!= (USB_DIR_OUT
| USB_TYPE_STANDARD
|
2031 ch9setaddress(udc
, wValue
, wIndex
, wLength
);
2034 case USB_REQ_CLEAR_FEATURE
:
2035 case USB_REQ_SET_FEATURE
:
2036 /* Requests with no data phase, status phase from udc */
2037 if ((setup
->bRequestType
& USB_TYPE_MASK
)
2038 != USB_TYPE_STANDARD
)
2041 if ((setup
->bRequestType
& USB_RECIP_MASK
)
2042 == USB_RECIP_ENDPOINT
) {
2043 int pipe
= wIndex
& USB_ENDPOINT_NUMBER_MASK
;
2046 if (wValue
!= 0 || wLength
!= 0
2047 || pipe
>= USB_MAX_ENDPOINTS
)
2049 ep
= &udc
->eps
[pipe
];
2051 spin_unlock(&udc
->lock
);
2052 qe_ep_set_halt(&ep
->ep
,
2053 (setup
->bRequest
== USB_REQ_SET_FEATURE
)
2055 spin_lock(&udc
->lock
);
2058 ep0_prime_status(udc
, USB_DIR_IN
);
2067 /* Data phase from gadget, status phase from udc */
2068 if (setup
->bRequestType
& USB_DIR_IN
) {
2069 udc
->ep0_state
= DATA_STATE_XMIT
;
2070 udc
->ep0_dir
= USB_DIR_IN
;
2072 udc
->ep0_state
= DATA_STATE_RECV
;
2073 udc
->ep0_dir
= USB_DIR_OUT
;
2075 spin_unlock(&udc
->lock
);
2076 if (udc
->driver
->setup(&udc
->gadget
,
2077 &udc
->local_setup_buff
) < 0)
2079 spin_lock(&udc
->lock
);
2081 /* No data phase, IN status from gadget */
2082 udc
->ep0_dir
= USB_DIR_IN
;
2083 spin_unlock(&udc
->lock
);
2084 if (udc
->driver
->setup(&udc
->gadget
,
2085 &udc
->local_setup_buff
) < 0)
2087 spin_lock(&udc
->lock
);
2088 udc
->ep0_state
= DATA_STATE_NEED_ZLP
;
2092 /*-------------------------------------------------------------------------
2093 USB Interrupt handlers
2094 -------------------------------------------------------------------------*/
2095 static void suspend_irq(struct qe_udc
*udc
)
2097 udc
->resume_state
= udc
->usb_state
;
2098 udc
->usb_state
= USB_STATE_SUSPENDED
;
2100 /* report suspend to the driver ,serial.c not support this*/
2101 if (udc
->driver
->suspend
)
2102 udc
->driver
->suspend(&udc
->gadget
);
2105 static void resume_irq(struct qe_udc
*udc
)
2107 udc
->usb_state
= udc
->resume_state
;
2108 udc
->resume_state
= 0;
2110 /* report resume to the driver , serial.c not support this*/
2111 if (udc
->driver
->resume
)
2112 udc
->driver
->resume(&udc
->gadget
);
2115 static void idle_irq(struct qe_udc
*udc
)
2119 usbs
= in_8(&udc
->usb_regs
->usb_usbs
);
2120 if (usbs
& USB_IDLE_STATUS_MASK
) {
2121 if ((udc
->usb_state
) != USB_STATE_SUSPENDED
)
2124 if (udc
->usb_state
== USB_STATE_SUSPENDED
)
2129 static int reset_irq(struct qe_udc
*udc
)
2133 if (udc
->usb_state
== USB_STATE_DEFAULT
)
2136 qe_usb_disable(udc
);
2137 out_8(&udc
->usb_regs
->usb_usadr
, 0);
2139 for (i
= 0; i
< USB_MAX_ENDPOINTS
; i
++) {
2140 if (udc
->eps
[i
].init
)
2141 qe_ep_reset(udc
, i
);
2145 udc
->usb_state
= USB_STATE_DEFAULT
;
2146 udc
->ep0_state
= WAIT_FOR_SETUP
;
2147 udc
->ep0_dir
= USB_DIR_OUT
;
2152 static int bsy_irq(struct qe_udc
*udc
)
2157 static int txe_irq(struct qe_udc
*udc
)
2162 /* ep0 tx interrupt also in here */
2163 static int tx_irq(struct qe_udc
*udc
)
2166 struct qe_bd __iomem
*bd
;
2169 if ((udc
->usb_state
== USB_STATE_ADDRESS
)
2170 && (in_8(&udc
->usb_regs
->usb_usadr
) == 0))
2171 out_8(&udc
->usb_regs
->usb_usadr
, udc
->device_address
);
2173 for (i
= (USB_MAX_ENDPOINTS
-1); ((i
>= 0) && (res
== 0)); i
--) {
2175 if (ep
&& ep
->init
&& (ep
->dir
!= USB_DIR_OUT
)) {
2177 if (!(in_be32((u32 __iomem
*)bd
) & T_R
)
2178 && (in_be32(&bd
->buf
))) {
2179 /* confirm the transmitted bd */
2181 res
= qe_ep0_txconf(ep
);
2183 res
= qe_ep_txconf(ep
);
2191 /* setup packect's rx is handle in the function too */
2192 static void rx_irq(struct qe_udc
*udc
)
2195 struct qe_bd __iomem
*bd
;
2198 for (i
= 0; i
< USB_MAX_ENDPOINTS
; i
++) {
2200 if (ep
&& ep
->init
&& (ep
->dir
!= USB_DIR_IN
)) {
2202 if (!(in_be32((u32 __iomem
*)bd
) & R_E
)
2203 && (in_be32(&bd
->buf
))) {
2204 if (ep
->epnum
== 0) {
2207 /*non-setup package receive*/
2215 static irqreturn_t
qe_udc_irq(int irq
, void *_udc
)
2217 struct qe_udc
*udc
= (struct qe_udc
*)_udc
;
2219 irqreturn_t status
= IRQ_NONE
;
2220 unsigned long flags
;
2222 spin_lock_irqsave(&udc
->lock
, flags
);
2224 irq_src
= in_be16(&udc
->usb_regs
->usb_usber
) &
2225 in_be16(&udc
->usb_regs
->usb_usbmr
);
2226 /* Clear notification bits */
2227 out_be16(&udc
->usb_regs
->usb_usber
, irq_src
);
2229 if (irq_src
& USB_E_IDLE_MASK
) {
2231 irq_src
&= ~USB_E_IDLE_MASK
;
2232 status
= IRQ_HANDLED
;
2235 if (irq_src
& USB_E_TXB_MASK
) {
2237 irq_src
&= ~USB_E_TXB_MASK
;
2238 status
= IRQ_HANDLED
;
2241 if (irq_src
& USB_E_RXB_MASK
) {
2243 irq_src
&= ~USB_E_RXB_MASK
;
2244 status
= IRQ_HANDLED
;
2247 if (irq_src
& USB_E_RESET_MASK
) {
2249 irq_src
&= ~USB_E_RESET_MASK
;
2250 status
= IRQ_HANDLED
;
2253 if (irq_src
& USB_E_BSY_MASK
) {
2255 irq_src
&= ~USB_E_BSY_MASK
;
2256 status
= IRQ_HANDLED
;
2259 if (irq_src
& USB_E_TXE_MASK
) {
2261 irq_src
&= ~USB_E_TXE_MASK
;
2262 status
= IRQ_HANDLED
;
2265 spin_unlock_irqrestore(&udc
->lock
, flags
);
2270 /*-------------------------------------------------------------------------
2271 Gadget driver probe and unregister.
2272 --------------------------------------------------------------------------*/
2273 static int fsl_qe_start(struct usb_gadget
*gadget
,
2274 struct usb_gadget_driver
*driver
)
2277 unsigned long flags
;
2279 udc
= container_of(gadget
, struct qe_udc
, gadget
);
2280 /* lock is needed but whether should use this lock or another */
2281 spin_lock_irqsave(&udc
->lock
, flags
);
2283 driver
->driver
.bus
= NULL
;
2284 /* hook up the driver */
2285 udc
->driver
= driver
;
2286 udc
->gadget
.speed
= driver
->max_speed
;
2288 /* Enable IRQ reg and Set usbcmd reg EN bit */
2291 out_be16(&udc
->usb_regs
->usb_usber
, 0xffff);
2292 out_be16(&udc
->usb_regs
->usb_usbmr
, USB_E_DEFAULT_DEVICE
);
2293 udc
->usb_state
= USB_STATE_ATTACHED
;
2294 udc
->ep0_state
= WAIT_FOR_SETUP
;
2295 udc
->ep0_dir
= USB_DIR_OUT
;
2296 spin_unlock_irqrestore(&udc
->lock
, flags
);
2301 static int fsl_qe_stop(struct usb_gadget
*gadget
)
2304 struct qe_ep
*loop_ep
;
2305 unsigned long flags
;
2307 udc
= container_of(gadget
, struct qe_udc
, gadget
);
2308 /* stop usb controller, disable intr */
2309 qe_usb_disable(udc
);
2311 /* in fact, no needed */
2312 udc
->usb_state
= USB_STATE_ATTACHED
;
2313 udc
->ep0_state
= WAIT_FOR_SETUP
;
2316 /* stand operation */
2317 spin_lock_irqsave(&udc
->lock
, flags
);
2318 udc
->gadget
.speed
= USB_SPEED_UNKNOWN
;
2319 nuke(&udc
->eps
[0], -ESHUTDOWN
);
2320 list_for_each_entry(loop_ep
, &udc
->gadget
.ep_list
, ep
.ep_list
)
2321 nuke(loop_ep
, -ESHUTDOWN
);
2322 spin_unlock_irqrestore(&udc
->lock
, flags
);
2329 /* udc structure's alloc and setup, include ep-param alloc */
2330 static struct qe_udc
*qe_udc_config(struct platform_device
*ofdev
)
2333 struct device_node
*np
= ofdev
->dev
.of_node
;
2334 unsigned long tmp_addr
= 0;
2335 struct usb_device_para __iomem
*usbpram
;
2340 udc
= kzalloc(sizeof(*udc
), GFP_KERNEL
);
2344 udc
->dev
= &ofdev
->dev
;
2346 /* get default address of usb parameter in MURAM from device tree */
2347 offset
= *of_get_address(np
, 1, &size
, NULL
);
2348 udc
->usb_param
= cpm_muram_addr(offset
);
2349 memset_io(udc
->usb_param
, 0, size
);
2351 usbpram
= udc
->usb_param
;
2352 out_be16(&usbpram
->frame_n
, 0);
2353 out_be32(&usbpram
->rstate
, 0);
2355 tmp_addr
= cpm_muram_alloc((USB_MAX_ENDPOINTS
*
2356 sizeof(struct usb_ep_para
)),
2357 USB_EP_PARA_ALIGNMENT
);
2358 if (IS_ERR_VALUE(tmp_addr
))
2361 for (i
= 0; i
< USB_MAX_ENDPOINTS
; i
++) {
2362 out_be16(&usbpram
->epptr
[i
], (u16
)tmp_addr
);
2363 udc
->ep_param
[i
] = cpm_muram_addr(tmp_addr
);
2367 memset_io(udc
->ep_param
[0], 0,
2368 USB_MAX_ENDPOINTS
* sizeof(struct usb_ep_para
));
2370 udc
->resume_state
= USB_STATE_NOTATTACHED
;
2371 udc
->usb_state
= USB_STATE_POWERED
;
2374 spin_lock_init(&udc
->lock
);
2382 /* USB Controller register init */
2383 static int qe_udc_reg_init(struct qe_udc
*udc
)
2385 struct usb_ctlr __iomem
*qe_usbregs
;
2386 qe_usbregs
= udc
->usb_regs
;
2388 /* Spec says that we must enable the USB controller to change mode. */
2389 out_8(&qe_usbregs
->usb_usmod
, 0x01);
2390 /* Mode changed, now disable it, since muram isn't initialized yet. */
2391 out_8(&qe_usbregs
->usb_usmod
, 0x00);
2393 /* Initialize the rest. */
2394 out_be16(&qe_usbregs
->usb_usbmr
, 0);
2395 out_8(&qe_usbregs
->usb_uscom
, 0);
2396 out_be16(&qe_usbregs
->usb_usber
, USBER_ALL_CLEAR
);
2401 static int qe_ep_config(struct qe_udc
*udc
, unsigned char pipe_num
)
2403 struct qe_ep
*ep
= &udc
->eps
[pipe_num
];
2406 strcpy(ep
->name
, ep_name
[pipe_num
]);
2407 ep
->ep
.name
= ep_name
[pipe_num
];
2409 if (pipe_num
== 0) {
2410 ep
->ep
.caps
.type_control
= true;
2412 ep
->ep
.caps
.type_iso
= true;
2413 ep
->ep
.caps
.type_bulk
= true;
2414 ep
->ep
.caps
.type_int
= true;
2417 ep
->ep
.caps
.dir_in
= true;
2418 ep
->ep
.caps
.dir_out
= true;
2420 ep
->ep
.ops
= &qe_ep_ops
;
2422 usb_ep_set_maxpacket_limit(&ep
->ep
, (unsigned short) ~0);
2425 ep
->epnum
= (u8
)pipe_num
;
2432 ep
->state
= EP_STATE_IDLE
;
2435 /* the queue lists any req for this ep */
2436 INIT_LIST_HEAD(&ep
->queue
);
2438 /* gagdet.ep_list used for ep_autoconfig so no ep0*/
2440 list_add_tail(&ep
->ep
.ep_list
, &udc
->gadget
.ep_list
);
2442 ep
->gadget
= &udc
->gadget
;
2447 /*-----------------------------------------------------------------------
2448 * UDC device Driver operation functions *
2449 *----------------------------------------------------------------------*/
2450 static void qe_udc_release(struct device
*dev
)
2452 struct qe_udc
*udc
= container_of(dev
, struct qe_udc
, gadget
.dev
);
2455 complete(udc
->done
);
2456 cpm_muram_free(cpm_muram_offset(udc
->ep_param
[0]));
2457 for (i
= 0; i
< USB_MAX_ENDPOINTS
; i
++)
2458 udc
->ep_param
[i
] = NULL
;
2463 /* Driver probe functions */
2464 static const struct of_device_id qe_udc_match
[];
2465 static int qe_udc_probe(struct platform_device
*ofdev
)
2468 const struct of_device_id
*match
;
2469 struct device_node
*np
= ofdev
->dev
.of_node
;
2471 unsigned int ret
= 0;
2475 match
= of_match_device(qe_udc_match
, &ofdev
->dev
);
2479 prop
= of_get_property(np
, "mode", NULL
);
2480 if (!prop
|| strcmp(prop
, "peripheral"))
2483 /* Initialize the udc structure including QH member and other member */
2484 udc
= qe_udc_config(ofdev
);
2486 dev_err(&ofdev
->dev
, "failed to initialize\n");
2490 udc
->soc_type
= (unsigned long)match
->data
;
2491 udc
->usb_regs
= of_iomap(np
, 0);
2492 if (!udc
->usb_regs
) {
2497 /* initialize usb hw reg except for regs for EP,
2498 * leave usbintr reg untouched*/
2499 qe_udc_reg_init(udc
);
2501 /* here comes the stand operations for probe
2502 * set the qe_udc->gadget.xxx */
2503 udc
->gadget
.ops
= &qe_gadget_ops
;
2505 /* gadget.ep0 is a pointer */
2506 udc
->gadget
.ep0
= &udc
->eps
[0].ep
;
2508 INIT_LIST_HEAD(&udc
->gadget
.ep_list
);
2510 /* modify in register gadget process */
2511 udc
->gadget
.speed
= USB_SPEED_UNKNOWN
;
2513 /* name: Identifies the controller hardware type. */
2514 udc
->gadget
.name
= driver_name
;
2515 udc
->gadget
.dev
.parent
= &ofdev
->dev
;
2517 /* initialize qe_ep struct */
2518 for (i
= 0; i
< USB_MAX_ENDPOINTS
; i
++) {
2519 /* because the ep type isn't decide here so
2520 * qe_ep_init() should be called in ep_enable() */
2522 /* setup the qe_ep struct and link ep.ep.list
2523 * into gadget.ep_list */
2524 qe_ep_config(udc
, (unsigned char)i
);
2527 /* ep0 initialization in here */
2528 ret
= qe_ep_init(udc
, 0, &qe_ep0_desc
);
2532 /* create a buf for ZLP send, need to remain zeroed */
2533 udc
->nullbuf
= devm_kzalloc(&ofdev
->dev
, 256, GFP_KERNEL
);
2534 if (udc
->nullbuf
== NULL
) {
2539 /* buffer for data of get_status request */
2540 udc
->statusbuf
= devm_kzalloc(&ofdev
->dev
, 2, GFP_KERNEL
);
2541 if (udc
->statusbuf
== NULL
) {
2546 udc
->nullp
= virt_to_phys((void *)udc
->nullbuf
);
2547 if (udc
->nullp
== DMA_ADDR_INVALID
) {
2548 udc
->nullp
= dma_map_single(
2549 udc
->gadget
.dev
.parent
,
2555 dma_sync_single_for_device(udc
->gadget
.dev
.parent
,
2560 tasklet_init(&udc
->rx_tasklet
, ep_rx_tasklet
,
2561 (unsigned long)udc
);
2562 /* request irq and disable DR */
2563 udc
->usb_irq
= irq_of_parse_and_map(np
, 0);
2564 if (!udc
->usb_irq
) {
2569 ret
= request_irq(udc
->usb_irq
, qe_udc_irq
, 0,
2572 dev_err(udc
->dev
, "cannot request irq %d err %d\n",
2577 ret
= usb_add_gadget_udc_release(&ofdev
->dev
, &udc
->gadget
,
2582 platform_set_drvdata(ofdev
, udc
);
2584 "%s USB controller initialized as device\n",
2585 (udc
->soc_type
== PORT_QE
) ? "QE" : "CPM");
2589 free_irq(udc
->usb_irq
, udc
);
2591 irq_dispose_mapping(udc
->usb_irq
);
2594 dma_unmap_single(udc
->gadget
.dev
.parent
,
2597 udc
->nullp
= DMA_ADDR_INVALID
;
2599 dma_sync_single_for_cpu(udc
->gadget
.dev
.parent
,
2605 cpm_muram_free(cpm_muram_offset(ep
->rxbase
));
2607 kfree(ep
->rxbuffer
);
2610 iounmap(udc
->usb_regs
);
2617 static int qe_udc_suspend(struct platform_device
*dev
, pm_message_t state
)
2622 static int qe_udc_resume(struct platform_device
*dev
)
2628 static int qe_udc_remove(struct platform_device
*ofdev
)
2630 struct qe_udc
*udc
= platform_get_drvdata(ofdev
);
2633 DECLARE_COMPLETION_ONSTACK(done
);
2635 usb_del_gadget_udc(&udc
->gadget
);
2638 tasklet_disable(&udc
->rx_tasklet
);
2641 dma_unmap_single(udc
->gadget
.dev
.parent
,
2644 udc
->nullp
= DMA_ADDR_INVALID
;
2646 dma_sync_single_for_cpu(udc
->gadget
.dev
.parent
,
2652 cpm_muram_free(cpm_muram_offset(ep
->rxbase
));
2653 size
= (ep
->ep
.maxpacket
+ USB_CRC_SIZE
+ 2) * (USB_BDRING_LEN
+ 1);
2657 dma_unmap_single(udc
->gadget
.dev
.parent
,
2660 ep
->rxbuf_d
= DMA_ADDR_INVALID
;
2662 dma_sync_single_for_cpu(udc
->gadget
.dev
.parent
,
2667 kfree(ep
->rxbuffer
);
2670 free_irq(udc
->usb_irq
, udc
);
2671 irq_dispose_mapping(udc
->usb_irq
);
2673 tasklet_kill(&udc
->rx_tasklet
);
2675 iounmap(udc
->usb_regs
);
2677 /* wait for release() of gadget.dev to free udc */
2678 wait_for_completion(&done
);
2683 /*-------------------------------------------------------------------------*/
2684 static const struct of_device_id qe_udc_match
[] = {
2686 .compatible
= "fsl,mpc8323-qe-usb",
2687 .data
= (void *)PORT_QE
,
2690 .compatible
= "fsl,mpc8360-qe-usb",
2691 .data
= (void *)PORT_QE
,
2694 .compatible
= "fsl,mpc8272-cpm-usb",
2695 .data
= (void *)PORT_CPM
,
2700 MODULE_DEVICE_TABLE(of
, qe_udc_match
);
2702 static struct platform_driver udc_driver
= {
2704 .name
= driver_name
,
2705 .of_match_table
= qe_udc_match
,
2707 .probe
= qe_udc_probe
,
2708 .remove
= qe_udc_remove
,
2710 .suspend
= qe_udc_suspend
,
2711 .resume
= qe_udc_resume
,
2715 module_platform_driver(udc_driver
);
2717 MODULE_DESCRIPTION(DRIVER_DESC
);
2718 MODULE_AUTHOR(DRIVER_AUTHOR
);
2719 MODULE_LICENSE("GPL");