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authorLi Yang <leoli@freescale.com>2007-04-23 13:54:25 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-27 16:28:43 -0400
commitb504882da539c17ce6fee9da2a97f2fafabd495d (patch)
treef4eb4bcc2ea778947a78bba22b8ec99ecfb508db
parent33f73e56198457c38789e08c47d2af47174c1d8f (diff)
USB: add Freescale high-speed USB SOC device controller driver
Freescale high-speed USB SOC can be found on some Freescale processors among different architectures. It supports both host and device functions. This driver adds its device support for Linux USB Gadget layer. It is tested on MPC8349 and MPC8313, but should work on other platforms with minor tweaks. The driver passed USBCV 1.3 compliance tests. Note that this driver doesn't yet include OTG support. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Jiang Bo <tanya.jiang@freescale.com> Signed-off-by: Bruce Schmid <duck@freescale.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat
-rw-r--r--drivers/usb/gadget/Kconfig21
-rw-r--r--drivers/usb/gadget/Makefile1
-rw-r--r--drivers/usb/gadget/fsl_usb2_udc.c2500
-rw-r--r--drivers/usb/gadget/fsl_usb2_udc.h579
4 files changed, 3101 insertions, 0 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index e081f3ebfb6f..8065f2b53701 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -68,6 +68,27 @@ choice
68 Many controller drivers are platform-specific; these 68 Many controller drivers are platform-specific; these
69 often need board-specific hooks. 69 often need board-specific hooks.
70 70
71config USB_GADGET_FSL_USB2
72 boolean "Freescale Highspeed USB DR Peripheral Controller"
73 depends on MPC834x || PPC_MPC831x
74 select USB_GADGET_DUALSPEED
75 help
76 Some of Freescale PowerPC processors have a High Speed
77 Dual-Role(DR) USB controller, which supports device mode.
78
79 The number of programmable endpoints is different through
80 SOC revisions.
81
82 Say "y" to link the driver statically, or "m" to build a
83 dynamically linked module called "fsl_usb2_udc" and force
84 all gadget drivers to also be dynamically linked.
85
86config USB_FSL_USB2
87 tristate
88 depends on USB_GADGET_FSL_USB2
89 default USB_GADGET
90 select USB_GADGET_SELECTED
91
71config USB_GADGET_NET2280 92config USB_GADGET_NET2280
72 boolean "NetChip 228x" 93 boolean "NetChip 228x"
73 depends on PCI 94 depends on PCI
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index e71e086a1cfa..5db19396631c 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_GOKU) += goku_udc.o
8obj-$(CONFIG_USB_OMAP) += omap_udc.o 8obj-$(CONFIG_USB_OMAP) += omap_udc.o
9obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o 9obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o
10obj-$(CONFIG_USB_AT91) += at91_udc.o 10obj-$(CONFIG_USB_AT91) += at91_udc.o
11obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
11 12
12# 13#
13# USB gadget drivers 14# USB gadget drivers
diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c
new file mode 100644
index 000000000000..157054ea3978
--- /dev/null
+++ b/drivers/usb/gadget/fsl_usb2_udc.c
@@ -0,0 +1,2500 @@
1/*
2 * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved.
3 *
4 * Author: Li Yang <leoli@freescale.com>
5 * Jiang Bo <tanya.jiang@freescale.com>
6 *
7 * Description:
8 * Freescale high-speed USB SOC DR module device controller driver.
9 * This can be found on MPC8349E/MPC8313E cpus.
10 * The driver is previously named as mpc_udc. Based on bare board
11 * code from Dave Liu and Shlomi Gridish.
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 */
18
19#undef VERBOSE
20
21#include <linux/module.h>
22#include <linux/kernel.h>
23#include <linux/ioport.h>
24#include <linux/types.h>
25#include <linux/errno.h>
26#include <linux/delay.h>
27#include <linux/sched.h>
28#include <linux/slab.h>
29#include <linux/init.h>
30#include <linux/timer.h>
31#include <linux/list.h>
32#include <linux/interrupt.h>
33#include <linux/proc_fs.h>
34#include <linux/mm.h>
35#include <linux/moduleparam.h>
36#include <linux/device.h>
37#include <linux/usb/ch9.h>
38#include <linux/usb_gadget.h>
39#include <linux/usb/otg.h>
40#include <linux/dma-mapping.h>
41#include <linux/platform_device.h>
42#include <linux/fsl_devices.h>
43#include <linux/dmapool.h>
44
45#include <asm/byteorder.h>
46#include <asm/io.h>
47#include <asm/irq.h>
48#include <asm/system.h>
49#include <asm/unaligned.h>
50#include <asm/dma.h>
51#include <asm/cacheflush.h>
52
53#include "fsl_usb2_udc.h"
54
55#define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller driver"
56#define DRIVER_AUTHOR "Li Yang/Jiang Bo"
57#define DRIVER_VERSION "Apr 20, 2007"
58
59#define DMA_ADDR_INVALID (~(dma_addr_t)0)
60
61static const char driver_name[] = "fsl-usb2-udc";
62static const char driver_desc[] = DRIVER_DESC;
63
64volatile static struct usb_dr_device *dr_regs = NULL;
65volatile static struct usb_sys_interface *usb_sys_regs = NULL;
66
67/* it is initialized in probe() */
68static struct fsl_udc *udc_controller = NULL;
69
70static const struct usb_endpoint_descriptor
71fsl_ep0_desc = {
72 .bLength = USB_DT_ENDPOINT_SIZE,
73 .bDescriptorType = USB_DT_ENDPOINT,
74 .bEndpointAddress = 0,
75 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
76 .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
77};
78
79static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state);
80static int fsl_udc_resume(struct platform_device *pdev);
81static void fsl_ep_fifo_flush(struct usb_ep *_ep);
82
83#ifdef CONFIG_PPC32
84#define fsl_readl(addr) in_le32(addr)
85#define fsl_writel(addr, val32) out_le32(val32, addr)
86#else
87#define fsl_readl(addr) readl(addr)
88#define fsl_writel(addr, val32) writel(addr, val32)
89#endif
90
91/********************************************************************
92 * Internal Used Function
93********************************************************************/
94/*-----------------------------------------------------------------
95 * done() - retire a request; caller blocked irqs
96 * @status : request status to be set, only works when
97 * request is still in progress.
98 *--------------------------------------------------------------*/
99static void done(struct fsl_ep *ep, struct fsl_req *req, int status)
100{
101 struct fsl_udc *udc = NULL;
102 unsigned char stopped = ep->stopped;
103 struct ep_td_struct *curr_td, *next_td;
104 int j;
105
106 udc = (struct fsl_udc *)ep->udc;
107 /* Removed the req from fsl_ep->queue */
108 list_del_init(&req->queue);
109
110 /* req.status should be set as -EINPROGRESS in ep_queue() */
111 if (req->req.status == -EINPROGRESS)
112 req->req.status = status;
113 else
114 status = req->req.status;
115
116 /* Free dtd for the request */
117 next_td = req->head;
118 for (j = 0; j < req->dtd_count; j++) {
119 curr_td = next_td;
120 if (j != req->dtd_count - 1) {
121 next_td = curr_td->next_td_virt;
122 }
123 dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma);
124 }
125
126 if (req->mapped) {
127 dma_unmap_single(ep->udc->gadget.dev.parent,
128 req->req.dma, req->req.length,
129 ep_is_in(ep)
130 ? DMA_TO_DEVICE
131 : DMA_FROM_DEVICE);
132 req->req.dma = DMA_ADDR_INVALID;
133 req->mapped = 0;
134 } else
135 dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
136 req->req.dma, req->req.length,
137 ep_is_in(ep)
138 ? DMA_TO_DEVICE
139 : DMA_FROM_DEVICE);
140
141 if (status && (status != -ESHUTDOWN))
142 VDBG("complete %s req %p stat %d len %u/%u",
143 ep->ep.name, &req->req, status,
144 req->req.actual, req->req.length);
145
146 ep->stopped = 1;
147
148 spin_unlock(&ep->udc->lock);
149 /* complete() is from gadget layer,
150 * eg fsg->bulk_in_complete() */
151 if (req->req.complete)
152 req->req.complete(&ep->ep, &req->req);
153
154 spin_lock(&ep->udc->lock);
155 ep->stopped = stopped;
156}
157
158/*-----------------------------------------------------------------
159 * nuke(): delete all requests related to this ep
160 * called with spinlock held
161 *--------------------------------------------------------------*/
162static void nuke(struct fsl_ep *ep, int status)
163{
164 ep->stopped = 1;
165
166 /* Flush fifo */
167 fsl_ep_fifo_flush(&ep->ep);
168
169 /* Whether this eq has request linked */
170 while (!list_empty(&ep->queue)) {
171 struct fsl_req *req = NULL;
172
173 req = list_entry(ep->queue.next, struct fsl_req, queue);
174 done(ep, req, status);
175 }
176}
177
178/*------------------------------------------------------------------
179 Internal Hardware related function
180 ------------------------------------------------------------------*/
181
182static int dr_controller_setup(struct fsl_udc *udc)
183{
184 unsigned int tmp = 0, portctrl = 0, ctrl = 0;
185 unsigned long timeout;
186#define FSL_UDC_RESET_TIMEOUT 1000
187
188 /* before here, make sure dr_regs has been initialized */
189 if (!udc)
190 return -EINVAL;
191
192 /* Stop and reset the usb controller */
193 tmp = fsl_readl(&dr_regs->usbcmd);
194 tmp &= ~USB_CMD_RUN_STOP;
195 fsl_writel(tmp, &dr_regs->usbcmd);
196
197 tmp = fsl_readl(&dr_regs->usbcmd);
198 tmp |= USB_CMD_CTRL_RESET;
199 fsl_writel(tmp, &dr_regs->usbcmd);
200
201 /* Wait for reset to complete */
202 timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
203 while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
204 if (time_after(jiffies, timeout)) {
205 ERR("udc reset timeout! \n");
206 return -ETIMEDOUT;
207 }
208 cpu_relax();
209 }
210
211 /* Set the controller as device mode */
212 tmp = fsl_readl(&dr_regs->usbmode);
213 tmp |= USB_MODE_CTRL_MODE_DEVICE;
214 /* Disable Setup Lockout */
215 tmp |= USB_MODE_SETUP_LOCK_OFF;
216 fsl_writel(tmp, &dr_regs->usbmode);
217
218 /* Clear the setup status */
219 fsl_writel(0, &dr_regs->usbsts);
220
221 tmp = udc->ep_qh_dma;
222 tmp &= USB_EP_LIST_ADDRESS_MASK;
223 fsl_writel(tmp, &dr_regs->endpointlistaddr);
224
225 VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x",
226 (int)udc->ep_qh, (int)tmp,
227 fsl_readl(&dr_regs->endpointlistaddr));
228
229 /* Config PHY interface */
230 portctrl = fsl_readl(&dr_regs->portsc1);
231 portctrl &= ~PORTSCX_PHY_TYPE_SEL;
232 switch (udc->phy_mode) {
233 case FSL_USB2_PHY_ULPI:
234 portctrl |= PORTSCX_PTS_ULPI;
235 break;
236 case FSL_USB2_PHY_UTMI:
237 case FSL_USB2_PHY_UTMI_WIDE:
238 portctrl |= PORTSCX_PTS_UTMI;
239 break;
240 case FSL_USB2_PHY_SERIAL:
241 portctrl |= PORTSCX_PTS_FSLS;
242 break;
243 default:
244 return -EINVAL;
245 }
246 fsl_writel(portctrl, &dr_regs->portsc1);
247
248 /* Config control enable i/o output, cpu endian register */
249 ctrl = __raw_readl(&usb_sys_regs->control);
250 ctrl |= USB_CTRL_IOENB;
251 __raw_writel(ctrl, &usb_sys_regs->control);
252
253#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
254 /* Turn on cache snooping hardware, since some PowerPC platforms
255 * wholly rely on hardware to deal with cache coherent. */
256
257 /* Setup Snooping for all the 4GB space */
258 tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */
259 __raw_writel(tmp, &usb_sys_regs->snoop1);
260 tmp |= 0x80000000; /* starts from 0x8000000, size 2G */
261 __raw_writel(tmp, &usb_sys_regs->snoop2);
262#endif
263
264 return 0;
265}
266
267/* Enable DR irq and set controller to run state */
268static void dr_controller_run(struct fsl_udc *udc)
269{
270 u32 temp;
271
272 /* Enable DR irq reg */
273 temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN
274 | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN
275 | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
276
277 fsl_writel(temp, &dr_regs->usbintr);
278
279 /* Clear stopped bit */
280 udc->stopped = 0;
281
282 /* Set the controller as device mode */
283 temp = fsl_readl(&dr_regs->usbmode);
284 temp |= USB_MODE_CTRL_MODE_DEVICE;
285 fsl_writel(temp, &dr_regs->usbmode);
286
287 /* Set controller to Run */
288 temp = fsl_readl(&dr_regs->usbcmd);
289 temp |= USB_CMD_RUN_STOP;
290 fsl_writel(temp, &dr_regs->usbcmd);
291
292 return;
293}
294
295static void dr_controller_stop(struct fsl_udc *udc)
296{
297 unsigned int tmp;
298
299 /* disable all INTR */
300 fsl_writel(0, &dr_regs->usbintr);
301
302 /* Set stopped bit for isr */
303 udc->stopped = 1;
304
305 /* disable IO output */
306/* usb_sys_regs->control = 0; */
307
308 /* set controller to Stop */
309 tmp = fsl_readl(&dr_regs->usbcmd);
310 tmp &= ~USB_CMD_RUN_STOP;
311 fsl_writel(tmp, &dr_regs->usbcmd);
312
313 return;
314}
315
316void dr_ep_setup(unsigned char ep_num, unsigned char dir, unsigned char ep_type)
317{
318 unsigned int tmp_epctrl = 0;
319
320 tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
321 if (dir) {
322 if (ep_num)
323 tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
324 tmp_epctrl |= EPCTRL_TX_ENABLE;
325 tmp_epctrl |= ((unsigned int)(ep_type)
326 << EPCTRL_TX_EP_TYPE_SHIFT);
327 } else {
328 if (ep_num)
329 tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
330 tmp_epctrl |= EPCTRL_RX_ENABLE;
331 tmp_epctrl |= ((unsigned int)(ep_type)
332 << EPCTRL_RX_EP_TYPE_SHIFT);
333 }
334
335 fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
336}
337
338static void
339dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value)
340{
341 u32 tmp_epctrl = 0;
342
343 tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
344
345 if (value) {
346 /* set the stall bit */
347 if (dir)
348 tmp_epctrl |= EPCTRL_TX_EP_STALL;
349 else
350 tmp_epctrl |= EPCTRL_RX_EP_STALL;
351 } else {
352 /* clear the stall bit and reset data toggle */
353 if (dir) {
354 tmp_epctrl &= ~EPCTRL_TX_EP_STALL;
355 tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
356 } else {
357 tmp_epctrl &= ~EPCTRL_RX_EP_STALL;
358 tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
359 }
360 }
361 fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
362}
363
364/* Get stall status of a specific ep
365 Return: 0: not stalled; 1:stalled */
366static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir)
367{
368 u32 epctrl;
369
370 epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
371 if (dir)
372 return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0;
373 else
374 return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0;
375}
376
377/********************************************************************
378 Internal Structure Build up functions
379********************************************************************/
380
381/*------------------------------------------------------------------
382* struct_ep_qh_setup(): set the Endpoint Capabilites field of QH
383 * @zlt: Zero Length Termination Select (1: disable; 0: enable)
384 * @mult: Mult field
385 ------------------------------------------------------------------*/
386static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
387 unsigned char dir, unsigned char ep_type,
388 unsigned int max_pkt_len,
389 unsigned int zlt, unsigned char mult)
390{
391 struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir];
392 unsigned int tmp = 0;
393
394 /* set the Endpoint Capabilites in QH */
395 switch (ep_type) {
396 case USB_ENDPOINT_XFER_CONTROL:
397 /* Interrupt On Setup (IOS). for control ep */
398 tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
399 | EP_QUEUE_HEAD_IOS;
400 break;
401 case USB_ENDPOINT_XFER_ISOC:
402 tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
403 | (mult << EP_QUEUE_HEAD_MULT_POS);
404 break;
405 case USB_ENDPOINT_XFER_BULK:
406 case USB_ENDPOINT_XFER_INT:
407 tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
408 break;
409 default:
410 VDBG("error ep type is %d", ep_type);
411 return;
412 }
413 if (zlt)
414 tmp |= EP_QUEUE_HEAD_ZLT_SEL;
415 p_QH->max_pkt_length = cpu_to_le32(tmp);
416
417 return;
418}
419
420/* Setup qh structure and ep register for ep0. */
421static void ep0_setup(struct fsl_udc *udc)
422{
423 /* the intialization of an ep includes: fields in QH, Regs,
424 * fsl_ep struct */
425 struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL,
426 USB_MAX_CTRL_PAYLOAD, 0, 0);
427 struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL,
428 USB_MAX_CTRL_PAYLOAD, 0, 0);
429 dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL);
430 dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL);
431
432 return;
433
434}
435
436/***********************************************************************
437 Endpoint Management Functions
438***********************************************************************/
439
440/*-------------------------------------------------------------------------
441 * when configurations are set, or when interface settings change
442 * for example the do_set_interface() in gadget layer,
443 * the driver will enable or disable the relevant endpoints
444 * ep0 doesn't use this routine. It is always enabled.
445-------------------------------------------------------------------------*/
446static int fsl_ep_enable(struct usb_ep *_ep,
447 const struct usb_endpoint_descriptor *desc)
448{
449 struct fsl_udc *udc = NULL;
450 struct fsl_ep *ep = NULL;
451 unsigned short max = 0;
452 unsigned char mult = 0, zlt;
453 int retval = -EINVAL;
454 unsigned long flags = 0;
455
456 ep = container_of(_ep, struct fsl_ep, ep);
457
458 /* catch various bogus parameters */
459 if (!_ep || !desc || ep->desc
460 || (desc->bDescriptorType != USB_DT_ENDPOINT))
461 return -EINVAL;
462
463 udc = ep->udc;
464
465 if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
466 return -ESHUTDOWN;
467
468 max = le16_to_cpu(desc->wMaxPacketSize);
469
470 /* Disable automatic zlp generation. Driver is reponsible to indicate
471 * explicitly through req->req.zero. This is needed to enable multi-td
472 * request. */
473 zlt = 1;
474
475 /* Assume the max packet size from gadget is always correct */
476 switch (desc->bmAttributes & 0x03) {
477 case USB_ENDPOINT_XFER_CONTROL:
478 case USB_ENDPOINT_XFER_BULK:
479 case USB_ENDPOINT_XFER_INT:
480 /* mult = 0. Execute N Transactions as demonstrated by
481 * the USB variable length packet protocol where N is
482 * computed using the Maximum Packet Length (dQH) and
483 * the Total Bytes field (dTD) */
484 mult = 0;
485 break;
486 case USB_ENDPOINT_XFER_ISOC:
487 /* Calculate transactions needed for high bandwidth iso */
488 mult = (unsigned char)(1 + ((max >> 11) & 0x03));
489 max = max & 0x8ff; /* bit 0~10 */
490 /* 3 transactions at most */
491 if (mult > 3)
492 goto en_done;
493 break;
494 default:
495 goto en_done;
496 }
497
498 spin_lock_irqsave(&udc->lock, flags);
499 ep->ep.maxpacket = max;
500 ep->desc = desc;
501 ep->stopped = 0;
502
503 /* Controller related setup */
504 /* Init EPx Queue Head (Ep Capabilites field in QH
505 * according to max, zlt, mult) */
506 struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
507 (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
508 ? USB_SEND : USB_RECV),
509 (unsigned char) (desc->bmAttributes
510 & USB_ENDPOINT_XFERTYPE_MASK),
511 max, zlt, mult);
512
513 /* Init endpoint ctrl register */
514 dr_ep_setup((unsigned char) ep_index(ep),
515 (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
516 ? USB_SEND : USB_RECV),
517 (unsigned char) (desc->bmAttributes
518 & USB_ENDPOINT_XFERTYPE_MASK));
519
520 spin_unlock_irqrestore(&udc->lock, flags);
521 retval = 0;
522
523 VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
524 ep->desc->bEndpointAddress & 0x0f,
525 (desc->bEndpointAddress & USB_DIR_IN)
526 ? "in" : "out", max);
527en_done:
528 return retval;
529}
530
531/*---------------------------------------------------------------------
532 * @ep : the ep being unconfigured. May not be ep0
533 * Any pending and uncomplete req will complete with status (-ESHUTDOWN)
534*---------------------------------------------------------------------*/
535static int fsl_ep_disable(struct usb_ep *_ep)
536{
537 struct fsl_udc *udc = NULL;
538 struct fsl_ep *ep = NULL;
539 unsigned long flags = 0;
540 u32 epctrl;
541 int ep_num;
542
543 ep = container_of(_ep, struct fsl_ep, ep);
544 if (!_ep || !ep->desc) {
545 VDBG("%s not enabled", _ep ? ep->ep.name : NULL);
546 return -EINVAL;
547 }
548
549 /* disable ep on controller */
550 ep_num = ep_index(ep);
551 epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
552 if (ep_is_in(ep))
553 epctrl &= ~EPCTRL_TX_ENABLE;
554 else
555 epctrl &= ~EPCTRL_RX_ENABLE;
556 fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
557
558 udc = (struct fsl_udc *)ep->udc;
559 spin_lock_irqsave(&udc->lock, flags);
560
561 /* nuke all pending requests (does flush) */
562 nuke(ep, -ESHUTDOWN);
563
564 ep->desc = 0;
565 ep->stopped = 1;
566 spin_unlock_irqrestore(&udc->lock, flags);
567
568 VDBG("disabled %s OK", _ep->name);
569 return 0;
570}
571
572/*---------------------------------------------------------------------
573 * allocate a request object used by this endpoint
574 * the main operation is to insert the req->queue to the eq->queue
575 * Returns the request, or null if one could not be allocated
576*---------------------------------------------------------------------*/
577static struct usb_request *
578fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
579{
580 struct fsl_req *req = NULL;
581
582 req = kzalloc(sizeof *req, gfp_flags);
583 if (!req)
584 return NULL;
585
586 req->req.dma = DMA_ADDR_INVALID;
587 INIT_LIST_HEAD(&req->queue);
588
589 return &req->req;
590}
591
592static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req)
593{
594 struct fsl_req *req = NULL;
595
596 req = container_of(_req, struct fsl_req, req);
597
598 if (_req)
599 kfree(req);
600}
601
602/*------------------------------------------------------------------
603 * Allocate an I/O buffer
604*---------------------------------------------------------------------*/
605static void *fsl_alloc_buffer(struct usb_ep *_ep, unsigned bytes,
606 dma_addr_t *dma, gfp_t gfp_flags)
607{
608 struct fsl_ep *ep;
609
610 if (!_ep)
611 return NULL;
612
613 ep = container_of(_ep, struct fsl_ep, ep);
614
615 return dma_alloc_coherent(ep->udc->gadget.dev.parent,
616 bytes, dma, gfp_flags);
617}
618
619/*------------------------------------------------------------------
620 * frees an i/o buffer
621*---------------------------------------------------------------------*/
622static void fsl_free_buffer(struct usb_ep *_ep, void *buf,
623 dma_addr_t dma, unsigned bytes)
624{
625 struct fsl_ep *ep;
626
627 if (!_ep)
628 return NULL;
629
630 ep = container_of(_ep, struct fsl_ep, ep);
631
632 dma_free_coherent(ep->udc->gadget.dev.parent, bytes, buf, dma);
633}
634
635/*-------------------------------------------------------------------------*/
636static int fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
637{
638 int i = ep_index(ep) * 2 + ep_is_in(ep);
639 u32 temp, bitmask, tmp_stat;
640 struct ep_queue_head *dQH = &ep->udc->ep_qh[i];
641
642 /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr);
643 VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */
644
645 bitmask = ep_is_in(ep)
646 ? (1 << (ep_index(ep) + 16))
647 : (1 << (ep_index(ep)));
648
649 /* check if the pipe is empty */
650 if (!(list_empty(&ep->queue))) {
651 /* Add td to the end */
652 struct fsl_req *lastreq;
653 lastreq = list_entry(ep->queue.prev, struct fsl_req, queue);
654 lastreq->tail->next_td_ptr =
655 cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK);
656 /* Read prime bit, if 1 goto done */
657 if (fsl_readl(&dr_regs->endpointprime) & bitmask)
658 goto out;
659
660 do {
661 /* Set ATDTW bit in USBCMD */
662 temp = fsl_readl(&dr_regs->usbcmd);
663 fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd);
664
665 /* Read correct status bit */
666 tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask;
667
668 } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW));
669
670 /* Write ATDTW bit to 0 */
671 temp = fsl_readl(&dr_regs->usbcmd);
672 fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd);
673
674 if (tmp_stat)
675 goto out;
676 }
677
678 /* Write dQH next pointer and terminate bit to 0 */
679 temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK;
680 dQH->next_dtd_ptr = cpu_to_le32(temp);
681
682 /* Clear active and halt bit */
683 temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE
684 | EP_QUEUE_HEAD_STATUS_HALT));
685 dQH->size_ioc_int_sts &= temp;
686
687 /* Prime endpoint by writing 1 to ENDPTPRIME */
688 temp = ep_is_in(ep)
689 ? (1 << (ep_index(ep) + 16))
690 : (1 << (ep_index(ep)));
691 fsl_writel(temp, &dr_regs->endpointprime);
692out:
693 return 0;
694}
695
696/* Fill in the dTD structure
697 * @req: request that the transfer belongs to
698 * @length: return actually data length of the dTD
699 * @dma: return dma address of the dTD
700 * @is_last: return flag if it is the last dTD of the request
701 * return: pointer to the built dTD */
702static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
703 dma_addr_t *dma, int *is_last)
704{
705 u32 swap_temp;
706 struct ep_td_struct *dtd;
707
708 /* how big will this transfer be? */
709 *length = min(req->req.length - req->req.actual,
710 (unsigned)EP_MAX_LENGTH_TRANSFER);
711
712 dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
713 if (dtd == NULL)
714 return dtd;
715
716 dtd->td_dma = *dma;
717 /* Clear reserved field */
718 swap_temp = cpu_to_le32(dtd->size_ioc_sts);
719 swap_temp &= ~DTD_RESERVED_FIELDS;
720 dtd->size_ioc_sts = cpu_to_le32(swap_temp);
721
722 /* Init all of buffer page pointers */
723 swap_temp = (u32) (req->req.dma + req->req.actual);
724 dtd->buff_ptr0 = cpu_to_le32(swap_temp);
725 dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000);
726 dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000);
727 dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000);
728 dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000);
729
730 req->req.actual += *length;
731
732 /* zlp is needed if req->req.zero is set */
733 if (req->req.zero) {
734 if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
735 *is_last = 1;
736 else
737 *is_last = 0;
738 } else if (req->req.length == req->req.actual)
739 *is_last = 1;
740 else
741 *is_last = 0;
742
743 if ((*is_last) == 0)
744 VDBG("multi-dtd request!\n");
745 /* Fill in the transfer size; set active bit */
746 swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
747
748 /* Enable interrupt for the last dtd of a request */
749 if (*is_last && !req->req.no_interrupt)
750 swap_temp |= DTD_IOC;
751
752 dtd->size_ioc_sts = cpu_to_le32(swap_temp);
753
754 mb();
755
756 VDBG("length = %d address= 0x%x", *length, (int)*dma);
757
758 return dtd;
759}
760
761/* Generate dtd chain for a request */
762static int fsl_req_to_dtd(struct fsl_req *req)
763{
764 unsigned count;
765 int is_last;
766 int is_first =1;
767 struct ep_td_struct *last_dtd = NULL, *dtd;
768 dma_addr_t dma;
769
770 do {
771 dtd = fsl_build_dtd(req, &count, &dma, &is_last);
772 if (dtd == NULL)
773 return -ENOMEM;
774
775 if (is_first) {
776 is_first = 0;
777 req->head = dtd;
778 } else {
779 last_dtd->next_td_ptr = cpu_to_le32(dma);
780 last_dtd->next_td_virt = dtd;
781 }
782 last_dtd = dtd;
783
784 req->dtd_count++;
785 } while (!is_last);
786
787 dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE);
788
789 req->tail = dtd;
790
791 return 0;
792}
793
794/* queues (submits) an I/O request to an endpoint */
795static int
796fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
797{
798 struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
799 struct fsl_req *req = container_of(_req, struct fsl_req, req);
800 struct fsl_udc *udc;
801 unsigned long flags;
802 int is_iso = 0;
803
804 /* catch various bogus parameters */
805 if (!_req || !req->req.complete || !req->req.buf
806 || !list_empty(&req->queue)) {
807 VDBG("%s, bad params\n", __FUNCTION__);
808 return -EINVAL;
809 }
810 if (!_ep || (!ep->desc && ep_index(ep))) {
811 VDBG("%s, bad ep\n", __FUNCTION__);
812 return -EINVAL;
813 }
814 if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
815 if (req->req.length > ep->ep.maxpacket)
816 return -EMSGSIZE;
817 is_iso = 1;
818 }
819
820 udc = ep->udc;
821 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
822 return -ESHUTDOWN;
823
824 req->ep = ep;
825
826 /* map virtual address to hardware */
827 if (req->req.dma == DMA_ADDR_INVALID) {
828 req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
829 req->req.buf,
830 req->req.length, ep_is_in(ep)
831 ? DMA_TO_DEVICE
832 : DMA_FROM_DEVICE);
833 req->mapped = 1;
834 } else {
835 dma_sync_single_for_device(ep->udc->gadget.dev.parent,
836 req->req.dma, req->req.length,
837 ep_is_in(ep)
838 ? DMA_TO_DEVICE
839 : DMA_FROM_DEVICE);
840 req->mapped = 0;
841 }
842
843 req->req.status = -EINPROGRESS;
844 req->req.actual = 0;
845 req->dtd_count = 0;
846
847 spin_lock_irqsave(&udc->lock, flags);
848
849 /* build dtds and push them to device queue */
850 if (!fsl_req_to_dtd(req)) {
851 fsl_queue_td(ep, req);
852 } else {
853 spin_unlock_irqrestore(&udc->lock, flags);
854 return -ENOMEM;
855 }
856
857 /* Update ep0 state */
858 if ((ep_index(ep) == 0))
859 udc->ep0_state = DATA_STATE_XMIT;
860
861 /* irq handler advances the queue */
862 if (req != NULL)
863 list_add_tail(&req->queue, &ep->queue);
864 spin_unlock_irqrestore(&udc->lock, flags);
865
866 return 0;
867}
868
869/* dequeues (cancels, unlinks) an I/O request from an endpoint */
870static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
871{
872 struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
873 struct fsl_req *req;
874 unsigned long flags;
875 int ep_num, stopped, ret = 0;
876 u32 epctrl;
877
878 if (!_ep || !_req)
879 return -EINVAL;
880
881 spin_lock_irqsave(&ep->udc->lock, flags);
882 stopped = ep->stopped;
883
884 /* Stop the ep before we deal with the queue */
885 ep->stopped = 1;
886 ep_num = ep_index(ep);
887 epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
888 if (ep_is_in(ep))
889 epctrl &= ~EPCTRL_TX_ENABLE;
890 else
891 epctrl &= ~EPCTRL_RX_ENABLE;
892 fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
893
894 /* make sure it's actually queued on this endpoint */
895 list_for_each_entry(req, &ep->queue, queue) {
896 if (&req->req == _req)
897 break;
898 }
899 if (&req->req != _req) {
900 ret = -EINVAL;
901 goto out;
902 }
903
904 /* The request is in progress, or completed but not dequeued */
905 if (ep->queue.next == &req->queue) {
906 _req->status = -ECONNRESET;
907 fsl_ep_fifo_flush(_ep); /* flush current transfer */
908
909 /* The request isn't the last request in this ep queue */
910 if (req->queue.next != &ep->queue) {
911 struct ep_queue_head *qh;
912 struct fsl_req *next_req;
913
914 qh = ep->qh;
915 next_req = list_entry(req->queue.next, struct fsl_req,
916 queue);
917
918 /* Point the QH to the first TD of next request */
919 fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr);
920 }
921
922 /* The request hasn't been processed, patch up the TD chain */
923 } else {
924 struct fsl_req *prev_req;
925
926 prev_req = list_entry(req->queue.prev, struct fsl_req, queue);
927 fsl_writel(fsl_readl(&req->tail->next_td_ptr),
928 &prev_req->tail->next_td_ptr);
929
930 }
931
932 done(ep, req, -ECONNRESET);
933
934 /* Enable EP */
935out: epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
936 if (ep_is_in(ep))
937 epctrl |= EPCTRL_TX_ENABLE;
938 else
939 epctrl |= EPCTRL_RX_ENABLE;
940 fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
941 ep->stopped = stopped;
942
943 spin_unlock_irqrestore(&ep->udc->lock, flags);
944 return ret;
945}
946
947/*-------------------------------------------------------------------------*/
948
949/*-----------------------------------------------------------------
950 * modify the endpoint halt feature
951 * @ep: the non-isochronous endpoint being stalled
952 * @value: 1--set halt 0--clear halt
953 * Returns zero, or a negative error code.
954*----------------------------------------------------------------*/
955static int fsl_ep_set_halt(struct usb_ep *_ep, int value)
956{
957 struct fsl_ep *ep = NULL;
958 unsigned long flags = 0;
959 int status = -EOPNOTSUPP; /* operation not supported */
960 unsigned char ep_dir = 0, ep_num = 0;
961 struct fsl_udc *udc = NULL;
962
963 ep = container_of(_ep, struct fsl_ep, ep);
964 udc = ep->udc;
965 if (!_ep || !ep->desc) {
966 status = -EINVAL;
967 goto out;
968 }
969
970 if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
971 status = -EOPNOTSUPP;
972 goto out;
973 }
974
975 /* Attempt to halt IN ep will fail if any transfer requests
976 * are still queue */
977 if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
978 status = -EAGAIN;
979 goto out;
980 }
981
982 status = 0;
983 ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
984 ep_num = (unsigned char)(ep_index(ep));
985 spin_lock_irqsave(&ep->udc->lock, flags);
986 dr_ep_change_stall(ep_num, ep_dir, value);
987 spin_unlock_irqrestore(&ep->udc->lock, flags);
988
989 if (ep_index(ep) == 0) {
990 udc->ep0_state = WAIT_FOR_SETUP;
991 udc->ep0_dir = 0;
992 }
993out:
994 VDBG(" %s %s halt stat %d", ep->ep.name,
995 value ? "set" : "clear", status);
996
997 return status;
998}
999
1000static void fsl_ep_fifo_flush(struct usb_ep *_ep)
1001{
1002 struct fsl_ep *ep;
1003 int ep_num, ep_dir;
1004 u32 bits;
1005 unsigned long timeout;
1006#define FSL_UDC_FLUSH_TIMEOUT 1000
1007
1008 if (!_ep) {
1009 return;
1010 } else {
1011 ep = container_of(_ep, struct fsl_ep, ep);
1012 if (!ep->desc)
1013 return;
1014 }
1015 ep_num = ep_index(ep);
1016 ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
1017
1018 if (ep_num == 0)
1019 bits = (1 << 16) | 1;
1020 else if (ep_dir == USB_SEND)
1021 bits = 1 << (16 + ep_num);
1022 else
1023 bits = 1 << ep_num;
1024
1025 timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT;
1026 do {
1027 fsl_writel(bits, &dr_regs->endptflush);
1028
1029 /* Wait until flush complete */
1030 while (fsl_readl(&dr_regs->endptflush)) {
1031 if (time_after(jiffies, timeout)) {
1032 ERR("ep flush timeout\n");
1033 return;
1034 }
1035 cpu_relax();
1036 }
1037 /* See if we need to flush again */
1038 } while (fsl_readl(&dr_regs->endptstatus) & bits);
1039}
1040
1041static struct usb_ep_ops fsl_ep_ops = {
1042 .enable = fsl_ep_enable,
1043 .disable = fsl_ep_disable,
1044
1045 .alloc_request = fsl_alloc_request,
1046 .free_request = fsl_free_request,
1047
1048 .alloc_buffer = fsl_alloc_buffer,
1049 .free_buffer = fsl_free_buffer,
1050
1051 .queue = fsl_ep_queue,
1052 .dequeue = fsl_ep_dequeue,
1053
1054 .set_halt = fsl_ep_set_halt,
1055 .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */
1056};
1057
1058/*-------------------------------------------------------------------------
1059 Gadget Driver Layer Operations
1060-------------------------------------------------------------------------*/
1061
1062/*----------------------------------------------------------------------
1063 * Get the current frame number (from DR frame_index Reg )
1064 *----------------------------------------------------------------------*/
1065static int fsl_get_frame(struct usb_gadget *gadget)
1066{
1067 return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS);
1068}
1069
1070/*-----------------------------------------------------------------------
1071 * Tries to wake up the host connected to this gadget
1072 -----------------------------------------------------------------------*/
1073static int fsl_wakeup(struct usb_gadget *gadget)
1074{
1075 struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget);
1076 u32 portsc;
1077
1078 /* Remote wakeup feature not enabled by host */
1079 if (!udc->remote_wakeup)
1080 return -ENOTSUPP;
1081
1082 portsc = fsl_readl(&dr_regs->portsc1);
1083 /* not suspended? */
1084 if (!(portsc & PORTSCX_PORT_SUSPEND))
1085 return 0;
1086 /* trigger force resume */
1087 portsc |= PORTSCX_PORT_FORCE_RESUME;
1088 fsl_writel(portsc, &dr_regs->portsc1);
1089 return 0;
1090}
1091
1092static int can_pullup(struct fsl_udc *udc)
1093{
1094 return udc->driver && udc->softconnect && udc->vbus_active;
1095}
1096
1097/* Notify controller that VBUS is powered, Called by whatever
1098 detects VBUS sessions */
1099static int fsl_vbus_session(struct usb_gadget *gadget, int is_active)
1100{
1101 struct fsl_udc *udc;
1102 unsigned long flags;
1103
1104 udc = container_of(gadget, struct fsl_udc, gadget);
1105 spin_lock_irqsave(&udc->lock, flags);
1106 VDBG("VBUS %s\n", is_active ? "on" : "off");
1107 udc->vbus_active = (is_active != 0);
1108 if (can_pullup(udc))
1109 fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
1110 &dr_regs->usbcmd);
1111 else
1112 fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
1113 &dr_regs->usbcmd);
1114 spin_unlock_irqrestore(&udc->lock, flags);
1115 return 0;
1116}
1117
1118/* constrain controller's VBUS power usage
1119 * This call is used by gadget drivers during SET_CONFIGURATION calls,
1120 * reporting how much power the device may consume. For example, this
1121 * could affect how quickly batteries are recharged.
1122 *
1123 * Returns zero on success, else negative errno.
1124 */
1125static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
1126{
1127#ifdef CONFIG_USB_OTG
1128 struct fsl_udc *udc;
1129
1130 udc = container_of(gadget, struct fsl_udc, gadget);
1131
1132 if (udc->transceiver)
1133 return otg_set_power(udc->transceiver, mA);
1134#endif
1135 return -ENOTSUPP;
1136}
1137
1138/* Change Data+ pullup status
1139 * this func is used by usb_gadget_connect/disconnet
1140 */
1141static int fsl_pullup(struct usb_gadget *gadget, int is_on)
1142{
1143 struct fsl_udc *udc;
1144
1145 udc = container_of(gadget, struct fsl_udc, gadget);
1146 udc->softconnect = (is_on != 0);
1147 if (can_pullup(udc))
1148 fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
1149 &dr_regs->usbcmd);
1150 else
1151 fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
1152 &dr_regs->usbcmd);
1153
1154 return 0;
1155}
1156
1157/* defined in usb_gadget.h */
1158static struct usb_gadget_ops fsl_gadget_ops = {
1159 .get_frame = fsl_get_frame,
1160 .wakeup = fsl_wakeup,
1161/* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */
1162 .vbus_session = fsl_vbus_session,
1163 .vbus_draw = fsl_vbus_draw,
1164 .pullup = fsl_pullup,
1165};
1166
1167/* Set protocol stall on ep0, protocol stall will automatically be cleared
1168 on new transaction */
1169static void ep0stall(struct fsl_udc *udc)
1170{
1171 u32 tmp;
1172
1173 /* must set tx and rx to stall at the same time */
1174 tmp = fsl_readl(&dr_regs->endptctrl[0]);
1175 tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL;
1176 fsl_writel(tmp, &dr_regs->endptctrl[0]);
1177 udc->ep0_state = WAIT_FOR_SETUP;
1178 udc->ep0_dir = 0;
1179}
1180
1181/* Prime a status phase for ep0 */
1182static int ep0_prime_status(struct fsl_udc *udc, int direction)
1183{
1184 struct fsl_req *req = udc->status_req;
1185 struct fsl_ep *ep;
1186 int status = 0;
1187
1188 if (direction == EP_DIR_IN)
1189 udc->ep0_dir = USB_DIR_IN;
1190 else
1191 udc->ep0_dir = USB_DIR_OUT;
1192
1193 ep = &udc->eps[0];
1194 udc->ep0_state = WAIT_FOR_OUT_STATUS;
1195
1196 req->ep = ep;
1197 req->req.length = 0;
1198 req->req.status = -EINPROGRESS;
1199 req->req.actual = 0;
1200 req->req.complete = NULL;
1201 req->dtd_count = 0;
1202
1203 if (fsl_req_to_dtd(req) == 0)
1204 status = fsl_queue_td(ep, req);
1205 else
1206 return -ENOMEM;
1207
1208 if (status)
1209 ERR("Can't queue ep0 status request \n");
1210 list_add_tail(&req->queue, &ep->queue);
1211
1212 return status;
1213}
1214
1215static inline int udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
1216{
1217 struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
1218
1219 if (!ep->name)
1220 return 0;
1221
1222 nuke(ep, -ESHUTDOWN);
1223
1224 return 0;
1225}
1226
1227/*
1228 * ch9 Set address
1229 */
1230static void ch9setaddress(struct fsl_udc *udc, u16 value, u16 index, u16 length)
1231{
1232 /* Save the new address to device struct */
1233 udc->device_address = (u8) value;
1234 /* Update usb state */
1235 udc->usb_state = USB_STATE_ADDRESS;
1236 /* Status phase */
1237 if (ep0_prime_status(udc, EP_DIR_IN))
1238 ep0stall(udc);
1239}
1240
1241/*
1242 * ch9 Get status
1243 */
1244static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
1245 u16 index, u16 length)
1246{
1247 u16 tmp = 0; /* Status, cpu endian */
1248
1249 struct fsl_req *req;
1250 struct fsl_ep *ep;
1251 int status = 0;
1252
1253 ep = &udc->eps[0];
1254
1255 if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
1256 /* Get device status */
1257 tmp = 1 << USB_DEVICE_SELF_POWERED;
1258 tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
1259 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
1260 /* Get interface status */
1261 /* We don't have interface information in udc driver */
1262 tmp = 0;
1263 } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
1264 /* Get endpoint status */
1265 struct fsl_ep *target_ep;
1266
1267 target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index));
1268
1269 /* stall if endpoint doesn't exist */
1270 if (!target_ep->desc)
1271 goto stall;
1272 tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep))
1273 << USB_ENDPOINT_HALT;
1274 }
1275
1276 udc->ep0_dir = USB_DIR_IN;
1277 /* Borrow the per device status_req */
1278 req = udc->status_req;
1279 /* Fill in the reqest structure */
1280 *((u16 *) req->req.buf) = cpu_to_le16(tmp);
1281 req->ep = ep;
1282 req->req.length = 2;
1283 req->req.status = -EINPROGRESS;
1284 req->req.actual = 0;
1285 req->req.complete = NULL;
1286 req->dtd_count = 0;
1287
1288 /* prime the data phase */
1289 if ((fsl_req_to_dtd(req) == 0))
1290 status = fsl_queue_td(ep, req);
1291 else /* no mem */
1292 goto stall;
1293
1294 if (status) {
1295 ERR("Can't respond to getstatus request \n");
1296 goto stall;
1297 }
1298 list_add_tail(&req->queue, &ep->queue);
1299 udc->ep0_state = DATA_STATE_XMIT;
1300 return;
1301stall:
1302 ep0stall(udc);
1303}
1304
1305static void setup_received_irq(struct fsl_udc *udc,
1306 struct usb_ctrlrequest *setup)
1307{
1308 u16 wValue = le16_to_cpu(setup->wValue);
1309 u16 wIndex = le16_to_cpu(setup->wIndex);
1310 u16 wLength = le16_to_cpu(setup->wLength);
1311
1312 udc_reset_ep_queue(udc, 0);
1313
1314 switch (setup->bRequest) {
1315 /* Request that need Data+Status phase from udc */
1316 case USB_REQ_GET_STATUS:
1317 if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_STANDARD))
1318 != (USB_DIR_IN | USB_TYPE_STANDARD))
1319 break;
1320 ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength);
1321 break;
1322
1323 /* Requests that need Status phase from udc */
1324 case USB_REQ_SET_ADDRESS:
1325 if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD
1326 | USB_RECIP_DEVICE))
1327 break;
1328 ch9setaddress(udc, wValue, wIndex, wLength);
1329 break;
1330
1331 /* Handled by udc, no data, status by udc */
1332 case USB_REQ_CLEAR_FEATURE:
1333 case USB_REQ_SET_FEATURE:
1334 { /* status transaction */
1335 int rc = -EOPNOTSUPP;
1336
1337 if ((setup->bRequestType & USB_RECIP_MASK)
1338 == USB_RECIP_ENDPOINT) {
1339 int pipe = get_pipe_by_windex(wIndex);
1340 struct fsl_ep *ep;
1341
1342 if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
1343 break;
1344 ep = get_ep_by_pipe(udc, pipe);
1345
1346 spin_unlock(&udc->lock);
1347 rc = fsl_ep_set_halt(&ep->ep,
1348 (setup->bRequest == USB_REQ_SET_FEATURE)
1349 ? 1 : 0);
1350 spin_lock(&udc->lock);
1351
1352 } else if ((setup->bRequestType & USB_RECIP_MASK)
1353 == USB_RECIP_DEVICE) {
1354 /* Note: The driver has not include OTG support yet.
1355 * This will be set when OTG support is added */
1356 if (!udc->gadget.is_otg)
1357 break;
1358 else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
1359 udc->gadget.b_hnp_enable = 1;
1360 else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
1361 udc->gadget.a_hnp_support = 1;
1362 else if (setup->bRequest ==
1363 USB_DEVICE_A_ALT_HNP_SUPPORT)
1364 udc->gadget.a_alt_hnp_support = 1;
1365 rc = 0;
1366 }
1367 if (rc == 0) {
1368 if (ep0_prime_status(udc, EP_DIR_IN))
1369 ep0stall(udc);
1370 }
1371 break;
1372 }
1373 /* Requests handled by gadget */
1374 default:
1375 if (wLength) {
1376 /* Data phase from gadget, status phase from udc */
1377 udc->ep0_dir = (setup->bRequestType & USB_DIR_IN)
1378 ? USB_DIR_IN : USB_DIR_OUT;
1379 spin_unlock(&udc->lock);
1380 if (udc->driver->setup(&udc->gadget,
1381 &udc->local_setup_buff) < 0)
1382 ep0stall(udc);
1383 spin_lock(&udc->lock);
1384 udc->ep0_state = (setup->bRequestType & USB_DIR_IN)
1385 ? DATA_STATE_XMIT : DATA_STATE_RECV;
1386
1387 } else {
1388 /* No data phase, IN status from gadget */
1389 udc->ep0_dir = USB_DIR_IN;
1390 spin_unlock(&udc->lock);
1391 if (udc->driver->setup(&udc->gadget,
1392 &udc->local_setup_buff) < 0)
1393 ep0stall(udc);
1394 spin_lock(&udc->lock);
1395 udc->ep0_state = WAIT_FOR_OUT_STATUS;
1396 }
1397 break;
1398 }
1399}
1400
1401/* Process request for Data or Status phase of ep0
1402 * prime status phase if needed */
1403static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0,
1404 struct fsl_req *req)
1405{
1406 if (udc->usb_state == USB_STATE_ADDRESS) {
1407 /* Set the new address */
1408 u32 new_address = (u32) udc->device_address;
1409 fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS,
1410 &dr_regs->deviceaddr);
1411 }
1412
1413 done(ep0, req, 0);
1414
1415 switch (udc->ep0_state) {
1416 case DATA_STATE_XMIT:
1417 /* receive status phase */
1418 if (ep0_prime_status(udc, EP_DIR_OUT))
1419 ep0stall(udc);
1420 break;
1421 case DATA_STATE_RECV:
1422 /* send status phase */
1423 if (ep0_prime_status(udc, EP_DIR_IN))
1424 ep0stall(udc);
1425 break;
1426 case WAIT_FOR_OUT_STATUS:
1427 udc->ep0_state = WAIT_FOR_SETUP;
1428 break;
1429 case WAIT_FOR_SETUP:
1430 ERR("Unexpect ep0 packets \n");
1431 break;
1432 default:
1433 ep0stall(udc);
1434 break;
1435 }
1436}
1437
1438/* Tripwire mechanism to ensure a setup packet payload is extracted without
1439 * being corrupted by another incoming setup packet */
1440static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr)
1441{
1442 u32 temp;
1443 struct ep_queue_head *qh;
1444
1445 qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT];
1446
1447 /* Clear bit in ENDPTSETUPSTAT */
1448 temp = fsl_readl(&dr_regs->endptsetupstat);
1449 fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat);
1450
1451 /* while a hazard exists when setup package arrives */
1452 do {
1453 /* Set Setup Tripwire */
1454 temp = fsl_readl(&dr_regs->usbcmd);
1455 fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd);
1456
1457 /* Copy the setup packet to local buffer */
1458 memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8);
1459 } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW));
1460
1461 /* Clear Setup Tripwire */
1462 temp = fsl_readl(&dr_regs->usbcmd);
1463 fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd);
1464}
1465
1466/* process-ep_req(): free the completed Tds for this req */
1467static int process_ep_req(struct fsl_udc *udc, int pipe,
1468 struct fsl_req *curr_req)
1469{
1470 struct ep_td_struct *curr_td;
1471 int td_complete, actual, remaining_length, j, tmp;
1472 int status = 0;
1473 int errors = 0;
1474 struct ep_queue_head *curr_qh = &udc->ep_qh[pipe];
1475 int direction = pipe % 2;
1476
1477 curr_td = curr_req->head;
1478 td_complete = 0;
1479 actual = curr_req->req.length;
1480
1481 for (j = 0; j < curr_req->dtd_count; j++) {
1482 remaining_length = (le32_to_cpu(curr_td->size_ioc_sts)
1483 & DTD_PACKET_SIZE)
1484 >> DTD_LENGTH_BIT_POS;
1485 actual -= remaining_length;
1486
1487 if ((errors = le32_to_cpu(curr_td->size_ioc_sts) &
1488 DTD_ERROR_MASK)) {
1489 if (errors & DTD_STATUS_HALTED) {
1490 ERR("dTD error %08x QH=%d\n", errors, pipe);
1491 /* Clear the errors and Halt condition */
1492 tmp = le32_to_cpu(curr_qh->size_ioc_int_sts);
1493 tmp &= ~errors;
1494 curr_qh->size_ioc_int_sts = cpu_to_le32(tmp);
1495 status = -EPIPE;
1496 /* FIXME: continue with next queued TD? */
1497
1498 break;
1499 }
1500 if (errors & DTD_STATUS_DATA_BUFF_ERR) {
1501 VDBG("Transfer overflow");
1502 status = -EPROTO;
1503 break;
1504 } else if (errors & DTD_STATUS_TRANSACTION_ERR) {
1505 VDBG("ISO error");
1506 status = -EILSEQ;
1507 break;
1508 } else
1509 ERR("Unknown error has occured (0x%x)!\r\n",
1510 errors);
1511
1512 } else if (le32_to_cpu(curr_td->size_ioc_sts)
1513 & DTD_STATUS_ACTIVE) {
1514 VDBG("Request not complete");
1515 status = REQ_UNCOMPLETE;
1516 return status;
1517 } else if (remaining_length) {
1518 if (direction) {
1519 VDBG("Transmit dTD remaining length not zero");
1520 status = -EPROTO;
1521 break;
1522 } else {
1523 td_complete++;
1524 break;
1525 }
1526 } else {
1527 td_complete++;
1528 VDBG("dTD transmitted successful ");
1529 }
1530
1531 if (j != curr_req->dtd_count - 1)
1532 curr_td = (struct ep_td_struct *)curr_td->next_td_virt;
1533 }
1534
1535 if (status)
1536 return status;
1537
1538 curr_req->req.actual = actual;
1539
1540 return 0;
1541}
1542
1543/* Process a DTD completion interrupt */
1544static void dtd_complete_irq(struct fsl_udc *udc)
1545{
1546 u32 bit_pos;
1547 int i, ep_num, direction, bit_mask, status;
1548 struct fsl_ep *curr_ep;
1549 struct fsl_req *curr_req, *temp_req;
1550
1551 /* Clear the bits in the register */
1552 bit_pos = fsl_readl(&dr_regs->endptcomplete);
1553 fsl_writel(bit_pos, &dr_regs->endptcomplete);
1554
1555 if (!bit_pos)
1556 return;
1557
1558 for (i = 0; i < udc->max_ep * 2; i++) {
1559 ep_num = i >> 1;
1560 direction = i % 2;
1561
1562 bit_mask = 1 << (ep_num + 16 * direction);
1563
1564 if (!(bit_pos & bit_mask))
1565 continue;
1566
1567 curr_ep = get_ep_by_pipe(udc, i);
1568
1569 /* If the ep is configured */
1570 if (curr_ep->name == NULL) {
1571 WARN("Invalid EP?");
1572 continue;
1573 }
1574
1575 /* process the req queue until an uncomplete request */
1576 list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue,
1577 queue) {
1578 status = process_ep_req(udc, i, curr_req);
1579
1580 VDBG("status of process_ep_req= %d, ep = %d",
1581 status, ep_num);
1582 if (status == REQ_UNCOMPLETE)
1583 break;
1584 /* write back status to req */
1585 curr_req->req.status = status;
1586
1587 if (ep_num == 0) {
1588 ep0_req_complete(udc, curr_ep, curr_req);
1589 break;
1590 } else
1591 done(curr_ep, curr_req, status);
1592 }
1593 }
1594}
1595
1596/* Process a port change interrupt */
1597static void port_change_irq(struct fsl_udc *udc)
1598{
1599 u32 speed;
1600
1601 if (udc->bus_reset)
1602 udc->bus_reset = 0;
1603
1604 /* Bus resetting is finished */
1605 if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
1606 /* Get the speed */
1607 speed = (fsl_readl(&dr_regs->portsc1)
1608 & PORTSCX_PORT_SPEED_MASK);
1609 switch (speed) {
1610 case PORTSCX_PORT_SPEED_HIGH:
1611 udc->gadget.speed = USB_SPEED_HIGH;
1612 break;
1613 case PORTSCX_PORT_SPEED_FULL:
1614 udc->gadget.speed = USB_SPEED_FULL;
1615 break;
1616 case PORTSCX_PORT_SPEED_LOW:
1617 udc->gadget.speed = USB_SPEED_LOW;
1618 break;
1619 default:
1620 udc->gadget.speed = USB_SPEED_UNKNOWN;
1621 break;
1622 }
1623 }
1624
1625 /* Update USB state */
1626 if (!udc->resume_state)
1627 udc->usb_state = USB_STATE_DEFAULT;
1628}
1629
1630/* Process suspend interrupt */
1631static void suspend_irq(struct fsl_udc *udc)
1632{
1633 udc->resume_state = udc->usb_state;
1634 udc->usb_state = USB_STATE_SUSPENDED;
1635
1636 /* report suspend to the driver, serial.c does not support this */
1637 if (udc->driver->suspend)
1638 udc->driver->suspend(&udc->gadget);
1639}
1640
1641static void bus_resume(struct fsl_udc *udc)
1642{
1643 udc->usb_state = udc->resume_state;
1644 udc->resume_state = 0;
1645
1646 /* report resume to the driver, serial.c does not support this */
1647 if (udc->driver->resume)
1648 udc->driver->resume(&udc->gadget);
1649}
1650
1651/* Clear up all ep queues */
1652static int reset_queues(struct fsl_udc *udc)
1653{
1654 u8 pipe;
1655
1656 for (pipe = 0; pipe < udc->max_pipes; pipe++)
1657 udc_reset_ep_queue(udc, pipe);
1658
1659 /* report disconnect; the driver is already quiesced */
1660 udc->driver->disconnect(&udc->gadget);
1661
1662 return 0;
1663}
1664
1665/* Process reset interrupt */
1666static void reset_irq(struct fsl_udc *udc)
1667{
1668 u32 temp;
1669 unsigned long timeout;
1670
1671 /* Clear the device address */
1672 temp = fsl_readl(&dr_regs->deviceaddr);
1673 fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr);
1674
1675 udc->device_address = 0;
1676
1677 /* Clear usb state */
1678 udc->resume_state = 0;
1679 udc->ep0_dir = 0;
1680 udc->ep0_state = WAIT_FOR_SETUP;
1681 udc->remote_wakeup = 0; /* default to 0 on reset */
1682 udc->gadget.b_hnp_enable = 0;
1683 udc->gadget.a_hnp_support = 0;
1684 udc->gadget.a_alt_hnp_support = 0;
1685
1686 /* Clear all the setup token semaphores */
1687 temp = fsl_readl(&dr_regs->endptsetupstat);
1688 fsl_writel(temp, &dr_regs->endptsetupstat);
1689
1690 /* Clear all the endpoint complete status bits */
1691 temp = fsl_readl(&dr_regs->endptcomplete);
1692 fsl_writel(temp, &dr_regs->endptcomplete);
1693
1694 timeout = jiffies + 100;
1695 while (fsl_readl(&dr_regs->endpointprime)) {
1696 /* Wait until all endptprime bits cleared */
1697 if (time_after(jiffies, timeout)) {
1698 ERR("Timeout for reset\n");
1699 break;
1700 }
1701 cpu_relax();
1702 }
1703
1704 /* Write 1s to the flush register */
1705 fsl_writel(0xffffffff, &dr_regs->endptflush);
1706
1707 if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
1708 VDBG("Bus reset");
1709 /* Bus is reseting */
1710 udc->bus_reset = 1;
1711 /* Reset all the queues, include XD, dTD, EP queue
1712 * head and TR Queue */
1713 reset_queues(udc);
1714 udc->usb_state = USB_STATE_DEFAULT;
1715 } else {
1716 VDBG("Controller reset");
1717 /* initialize usb hw reg except for regs for EP, not
1718 * touch usbintr reg */
1719 dr_controller_setup(udc);
1720
1721 /* Reset all internal used Queues */
1722 reset_queues(udc);
1723
1724 ep0_setup(udc);
1725
1726 /* Enable DR IRQ reg, Set Run bit, change udc state */
1727 dr_controller_run(udc);
1728 udc->usb_state = USB_STATE_ATTACHED;
1729 }
1730}
1731
1732/*
1733 * USB device controller interrupt handler
1734 */
1735static irqreturn_t fsl_udc_irq(int irq, void *_udc)
1736{
1737 struct fsl_udc *udc = _udc;
1738 u32 irq_src;
1739 irqreturn_t status = IRQ_NONE;
1740 unsigned long flags;
1741
1742 /* Disable ISR for OTG host mode */
1743 if (udc->stopped)
1744 return IRQ_NONE;
1745 spin_lock_irqsave(&udc->lock, flags);
1746 irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr);
1747 /* Clear notification bits */
1748 fsl_writel(irq_src, &dr_regs->usbsts);
1749
1750 /* VDBG("irq_src [0x%8x]", irq_src); */
1751
1752 /* Need to resume? */
1753 if (udc->usb_state == USB_STATE_SUSPENDED)
1754 if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0)
1755 bus_resume(udc);
1756
1757 /* USB Interrupt */
1758 if (irq_src & USB_STS_INT) {
1759 VDBG("Packet int");
1760 /* Setup package, we only support ep0 as control ep */
1761 if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
1762 tripwire_handler(udc, 0,
1763 (u8 *) (&udc->local_setup_buff));
1764 setup_received_irq(udc, &udc->local_setup_buff);
1765 status = IRQ_HANDLED;
1766 }
1767
1768 /* completion of dtd */
1769 if (fsl_readl(&dr_regs->endptcomplete)) {
1770 dtd_complete_irq(udc);
1771 status = IRQ_HANDLED;
1772 }
1773 }
1774
1775 /* SOF (for ISO transfer) */
1776 if (irq_src & USB_STS_SOF) {
1777 status = IRQ_HANDLED;
1778 }
1779
1780 /* Port Change */
1781 if (irq_src & USB_STS_PORT_CHANGE) {
1782 port_change_irq(udc);
1783 status = IRQ_HANDLED;
1784 }
1785
1786 /* Reset Received */
1787 if (irq_src & USB_STS_RESET) {
1788 reset_irq(udc);
1789 status = IRQ_HANDLED;
1790 }
1791
1792 /* Sleep Enable (Suspend) */
1793 if (irq_src & USB_STS_SUSPEND) {
1794 suspend_irq(udc);
1795 status = IRQ_HANDLED;
1796 }
1797
1798 if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
1799 VDBG("Error IRQ %x ", irq_src);
1800 }
1801
1802 spin_unlock_irqrestore(&udc->lock, flags);
1803 return status;
1804}
1805
1806/*----------------------------------------------------------------*
1807 * Hook to gadget drivers
1808 * Called by initialization code of gadget drivers
1809*----------------------------------------------------------------*/
1810int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1811{
1812 int retval = -ENODEV;
1813 unsigned long flags = 0;
1814
1815 if (!udc_controller)
1816 return -ENODEV;
1817
1818 if (!driver || (driver->speed != USB_SPEED_FULL
1819 && driver->speed != USB_SPEED_HIGH)
1820 || !driver->bind || !driver->disconnect
1821 || !driver->setup)
1822 return -EINVAL;
1823
1824 if (udc_controller->driver)
1825 return -EBUSY;
1826
1827 /* lock is needed but whether should use this lock or another */
1828 spin_lock_irqsave(&udc_controller->lock, flags);
1829
1830 driver->driver.bus = 0;
1831 /* hook up the driver */
1832 udc_controller->driver = driver;
1833 udc_controller->gadget.dev.driver = &driver->driver;
1834 spin_unlock_irqrestore(&udc_controller->lock, flags);
1835
1836 /* bind udc driver to gadget driver */
1837 retval = driver->bind(&udc_controller->gadget);
1838 if (retval) {
1839 VDBG("bind to %s --> %d", driver->driver.name, retval);
1840 udc_controller->gadget.dev.driver = 0;
1841 udc_controller->driver = 0;
1842 goto out;
1843 }
1844
1845 /* Enable DR IRQ reg and Set usbcmd reg Run bit */
1846 dr_controller_run(udc_controller);
1847 udc_controller->usb_state = USB_STATE_ATTACHED;
1848 udc_controller->ep0_state = WAIT_FOR_SETUP;
1849 udc_controller->ep0_dir = 0;
1850 printk(KERN_INFO "%s: bind to driver %s \n",
1851 udc_controller->gadget.name, driver->driver.name);
1852
1853out:
1854 if (retval)
1855 printk("retval %d \n", retval);
1856 return retval;
1857}
1858EXPORT_SYMBOL(usb_gadget_register_driver);
1859
1860/* Disconnect from gadget driver */
1861int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1862{
1863 struct fsl_ep *loop_ep;
1864 unsigned long flags;
1865
1866 if (!udc_controller)
1867 return -ENODEV;
1868
1869 if (!driver || driver != udc_controller->driver || !driver->unbind)
1870 return -EINVAL;
1871
1872#ifdef CONFIG_USB_OTG
1873 if (udc_controller->transceiver)
1874 (void)otg_set_peripheral(udc_controller->transceiver, 0);
1875#endif
1876
1877 /* stop DR, disable intr */
1878 dr_controller_stop(udc_controller);
1879
1880 /* in fact, no needed */
1881 udc_controller->usb_state = USB_STATE_ATTACHED;
1882 udc_controller->ep0_state = WAIT_FOR_SETUP;
1883 udc_controller->ep0_dir = 0;
1884
1885 /* stand operation */
1886 spin_lock_irqsave(&udc_controller->lock, flags);
1887 udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
1888 nuke(&udc_controller->eps[0], -ESHUTDOWN);
1889 list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
1890 ep.ep_list)
1891 nuke(loop_ep, -ESHUTDOWN);
1892 spin_unlock_irqrestore(&udc_controller->lock, flags);
1893
1894 /* unbind gadget and unhook driver. */
1895 driver->unbind(&udc_controller->gadget);
1896 udc_controller->gadget.dev.driver = 0;
1897 udc_controller->driver = 0;
1898
1899 printk("unregistered gadget driver '%s'\r\n", driver->driver.name);
1900 return 0;
1901}
1902EXPORT_SYMBOL(usb_gadget_unregister_driver);
1903
1904/*-------------------------------------------------------------------------
1905 PROC File System Support
1906-------------------------------------------------------------------------*/
1907#ifdef CONFIG_USB_GADGET_DEBUG_FILES
1908
1909#include <linux/seq_file.h>
1910
1911static const char proc_filename[] = "driver/fsl_usb2_udc";
1912
1913static int fsl_proc_read(char *page, char **start, off_t off, int count,
1914 int *eof, void *_dev)
1915{
1916 char *buf = page;
1917 char *next = buf;
1918 unsigned size = count;
1919 unsigned long flags;
1920 int t, i;
1921 u32 tmp_reg;
1922 struct fsl_ep *ep = NULL;
1923 struct fsl_req *req;
1924
1925 struct fsl_udc *udc = udc_controller;
1926 if (off != 0)
1927 return 0;
1928
1929 spin_lock_irqsave(&udc->lock, flags);
1930
1931 /* ------basic driver infomation ---- */
1932 t = scnprintf(next, size,
1933 DRIVER_DESC "\n"
1934 "%s version: %s\n"
1935 "Gadget driver: %s\n\n",
1936 driver_name, DRIVER_VERSION,
1937 udc->driver ? udc->driver->driver.name : "(none)");
1938 size -= t;
1939 next += t;
1940
1941 /* ------ DR Registers ----- */
1942 tmp_reg = fsl_readl(&dr_regs->usbcmd);
1943 t = scnprintf(next, size,
1944 "USBCMD reg:\n"
1945 "SetupTW: %d\n"
1946 "Run/Stop: %s\n\n",
1947 (tmp_reg & USB_CMD_SUTW) ? 1 : 0,
1948 (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop");
1949 size -= t;
1950 next += t;
1951
1952 tmp_reg = fsl_readl(&dr_regs->usbsts);
1953 t = scnprintf(next, size,
1954 "USB Status Reg:\n"
1955 "Dr Suspend: %d" "Reset Received: %d" "System Error: %s"
1956 "USB Error Interrupt: %s\n\n",
1957 (tmp_reg & USB_STS_SUSPEND) ? 1 : 0,
1958 (tmp_reg & USB_STS_RESET) ? 1 : 0,
1959 (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal",
1960 (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err");
1961 size -= t;
1962 next += t;
1963
1964 tmp_reg = fsl_readl(&dr_regs->usbintr);
1965 t = scnprintf(next, size,
1966 "USB Intrrupt Enable Reg:\n"
1967 "Sleep Enable: %d" "SOF Received Enable: %d"
1968 "Reset Enable: %d\n"
1969 "System Error Enable: %d"
1970 "Port Change Dectected Enable: %d\n"
1971 "USB Error Intr Enable: %d" "USB Intr Enable: %d\n\n",
1972 (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
1973 (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
1974 (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0,
1975 (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0,
1976 (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0,
1977 (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0,
1978 (tmp_reg & USB_INTR_INT_EN) ? 1 : 0);
1979 size -= t;
1980 next += t;
1981
1982 tmp_reg = fsl_readl(&dr_regs->frindex);
1983 t = scnprintf(next, size,
1984 "USB Frame Index Reg:" "Frame Number is 0x%x\n\n",
1985 (tmp_reg & USB_FRINDEX_MASKS));
1986 size -= t;
1987 next += t;
1988
1989 tmp_reg = fsl_readl(&dr_regs->deviceaddr);
1990 t = scnprintf(next, size,
1991 "USB Device Address Reg:" "Device Addr is 0x%x\n\n",
1992 (tmp_reg & USB_DEVICE_ADDRESS_MASK));
1993 size -= t;
1994 next += t;
1995
1996 tmp_reg = fsl_readl(&dr_regs->endpointlistaddr);
1997 t = scnprintf(next, size,
1998 "USB Endpoint List Address Reg:"
1999 "Device Addr is 0x%x\n\n",
2000 (tmp_reg & USB_EP_LIST_ADDRESS_MASK));
2001 size -= t;
2002 next += t;
2003
2004 tmp_reg = fsl_readl(&dr_regs->portsc1);
2005 t = scnprintf(next, size,
2006 "USB Port Status&Control Reg:\n"
2007 "Port Transceiver Type : %s" "Port Speed: %s \n"
2008 "PHY Low Power Suspend: %s" "Port Reset: %s"
2009 "Port Suspend Mode: %s \n" "Over-current Change: %s"
2010 "Port Enable/Disable Change: %s\n"
2011 "Port Enabled/Disabled: %s"
2012 "Current Connect Status: %s\n\n", ( {
2013 char *s;
2014 switch (tmp_reg & PORTSCX_PTS_FSLS) {
2015 case PORTSCX_PTS_UTMI:
2016 s = "UTMI"; break;
2017 case PORTSCX_PTS_ULPI:
2018 s = "ULPI "; break;
2019 case PORTSCX_PTS_FSLS:
2020 s = "FS/LS Serial"; break;
2021 default:
2022 s = "None"; break;
2023 }
2024 s;} ), ( {
2025 char *s;
2026 switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
2027 case PORTSCX_PORT_SPEED_FULL:
2028 s = "Full Speed"; break;
2029 case PORTSCX_PORT_SPEED_LOW:
2030 s = "Low Speed"; break;
2031 case PORTSCX_PORT_SPEED_HIGH:
2032 s = "High Speed"; break;
2033 default:
2034 s = "Undefined"; break;
2035 }
2036 s;
2037 } ),
2038 (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
2039 "Normal PHY mode" : "Low power mode",
2040 (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
2041 "Not in Reset",
2042 (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in",
2043 (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" :
2044 "No",
2045 (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" :
2046 "Not change",
2047 (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" :
2048 "Not correct",
2049 (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ?
2050 "Attached" : "Not-Att");
2051 size -= t;
2052 next += t;
2053
2054 tmp_reg = fsl_readl(&dr_regs->usbmode);
2055 t = scnprintf(next, size,
2056 "USB Mode Reg:" "Controller Mode is : %s\n\n", ( {
2057 char *s;
2058 switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) {
2059 case USB_MODE_CTRL_MODE_IDLE:
2060 s = "Idle"; break;
2061 case USB_MODE_CTRL_MODE_DEVICE:
2062 s = "Device Controller"; break;
2063 case USB_MODE_CTRL_MODE_HOST:
2064 s = "Host Controller"; break;
2065 default:
2066 s = "None"; break;
2067 }
2068 s;
2069 } ));
2070 size -= t;
2071 next += t;
2072
2073 tmp_reg = fsl_readl(&dr_regs->endptsetupstat);
2074 t = scnprintf(next, size,
2075 "Endpoint Setup Status Reg:" "SETUP on ep 0x%x\n\n",
2076 (tmp_reg & EP_SETUP_STATUS_MASK));
2077 size -= t;
2078 next += t;
2079
2080 for (i = 0; i < udc->max_ep / 2; i++) {
2081 tmp_reg = fsl_readl(&dr_regs->endptctrl[i]);
2082 t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n",
2083 i, tmp_reg);
2084 size -= t;
2085 next += t;
2086 }
2087 tmp_reg = fsl_readl(&dr_regs->endpointprime);
2088 t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n", tmp_reg);
2089 size -= t;
2090 next += t;
2091
2092 tmp_reg = usb_sys_regs->snoop1;
2093 t = scnprintf(next, size, "\nSnoop1 Reg : = [0x%x]\n\n", tmp_reg);
2094 size -= t;
2095 next += t;
2096
2097 tmp_reg = usb_sys_regs->control;
2098 t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n",
2099 tmp_reg);
2100 size -= t;
2101 next += t;
2102
2103 /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */
2104 ep = &udc->eps[0];
2105 t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n",
2106 ep->ep.name, ep_maxpacket(ep), ep_index(ep));
2107 size -= t;
2108 next += t;
2109
2110 if (list_empty(&ep->queue)) {
2111 t = scnprintf(next, size, "its req queue is empty\n\n");
2112 size -= t;
2113 next += t;
2114 } else {
2115 list_for_each_entry(req, &ep->queue, queue) {
2116 t = scnprintf(next, size,
2117 "req %p actual 0x%x length 0x%x buf %p\n",
2118 &req->req, req->req.actual,
2119 req->req.length, req->req.buf);
2120 size -= t;
2121 next += t;
2122 }
2123 }
2124 /* other gadget->eplist ep */
2125 list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
2126 if (ep->desc) {
2127 t = scnprintf(next, size,
2128 "\nFor %s Maxpkt is 0x%x "
2129 "index is 0x%x\n",
2130 ep->ep.name, ep_maxpacket(ep),
2131 ep_index(ep));
2132 size -= t;
2133 next += t;
2134
2135 if (list_empty(&ep->queue)) {
2136 t = scnprintf(next, size,
2137 "its req queue is empty\n\n");
2138 size -= t;
2139 next += t;
2140 } else {
2141 list_for_each_entry(req, &ep->queue, queue) {
2142 t = scnprintf(next, size,
2143 "req %p actual 0x%x length"
2144 "0x%x buf %p\n",
2145 &req->req, req->req.actual,
2146 req->req.length, req->req.buf);
2147 size -= t;
2148 next += t;
2149 } /* end for each_entry of ep req */
2150 } /* end for else */
2151 } /* end for if(ep->queue) */
2152 } /* end (ep->desc) */
2153
2154 spin_unlock_irqrestore(&udc->lock, flags);
2155
2156 *eof = 1;
2157 return count - size;
2158}
2159
2160#define create_proc_file() create_proc_read_entry(proc_filename, \
2161 0, NULL, fsl_proc_read, NULL)
2162
2163#define remove_proc_file() remove_proc_entry(proc_filename, NULL)
2164
2165#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
2166
2167#define create_proc_file() do {} while (0)
2168#define remove_proc_file() do {} while (0)
2169
2170#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
2171
2172/*-------------------------------------------------------------------------*/
2173
2174/* Release udc structures */
2175static void fsl_udc_release(struct device *dev)
2176{
2177 complete(udc_controller->done);
2178 dma_free_coherent(dev, udc_controller->ep_qh_size,
2179 udc_controller->ep_qh, udc_controller->ep_qh_dma);
2180 kfree(udc_controller);
2181}
2182
2183/******************************************************************
2184 Internal structure setup functions
2185*******************************************************************/
2186/*------------------------------------------------------------------
2187 * init resource for globle controller
2188 * Return the udc handle on success or NULL on failure
2189 ------------------------------------------------------------------*/
2190static struct fsl_udc *__init struct_udc_setup(struct platform_device *pdev)
2191{
2192 struct fsl_udc *udc;
2193 struct fsl_usb2_platform_data *pdata;
2194 size_t size;
2195
2196 udc = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL);
2197 if (udc == NULL) {
2198 ERR("malloc udc failed\n");
2199 return NULL;
2200 }
2201
2202 pdata = pdev->dev.platform_data;
2203 udc->phy_mode = pdata->phy_mode;
2204 /* max_ep_nr is bidirectional ep number, max_ep doubles the number */
2205 udc->max_ep = pdata->max_ep_nr * 2;
2206
2207 udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL);
2208 if (!udc->eps) {
2209 ERR("malloc fsl_ep failed\n");
2210 goto cleanup;
2211 }
2212
2213 /* initialized QHs, take care of alignment */
2214 size = udc->max_ep * sizeof(struct ep_queue_head);
2215 if (size < QH_ALIGNMENT)
2216 size = QH_ALIGNMENT;
2217 else if ((size % QH_ALIGNMENT) != 0) {
2218 size += QH_ALIGNMENT + 1;
2219 size &= ~(QH_ALIGNMENT - 1);
2220 }
2221 udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
2222 &udc->ep_qh_dma, GFP_KERNEL);
2223 if (!udc->ep_qh) {
2224 ERR("malloc QHs for udc failed\n");
2225 kfree(udc->eps);
2226 goto cleanup;
2227 }
2228
2229 udc->ep_qh_size = size;
2230
2231 /* Initialize ep0 status request structure */
2232 /* FIXME: fsl_alloc_request() ignores ep argument */
2233 udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
2234 struct fsl_req, req);
2235 /* allocate a small amount of memory to get valid address */
2236 udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
2237 udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
2238
2239 udc->resume_state = USB_STATE_NOTATTACHED;
2240 udc->usb_state = USB_STATE_POWERED;
2241 udc->ep0_dir = 0;
2242 udc->remote_wakeup = 0; /* default to 0 on reset */
2243 spin_lock_init(&udc->lock);
2244
2245 return udc;
2246
2247cleanup:
2248 kfree(udc);
2249 return NULL;
2250}
2251
2252/*----------------------------------------------------------------
2253 * Setup the fsl_ep struct for eps
2254 * Link fsl_ep->ep to gadget->ep_list
2255 * ep0out is not used so do nothing here
2256 * ep0in should be taken care
2257 *--------------------------------------------------------------*/
2258static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index,
2259 char *name, int link)
2260{
2261 struct fsl_ep *ep = &udc->eps[index];
2262
2263 ep->udc = udc;
2264 strcpy(ep->name, name);
2265 ep->ep.name = ep->name;
2266
2267 ep->ep.ops = &fsl_ep_ops;
2268 ep->stopped = 0;
2269
2270 /* for ep0: maxP defined in desc
2271 * for other eps, maxP is set by epautoconfig() called by gadget layer
2272 */
2273 ep->ep.maxpacket = (unsigned short) ~0;
2274
2275 /* the queue lists any req for this ep */
2276 INIT_LIST_HEAD(&ep->queue);
2277
2278 /* gagdet.ep_list used for ep_autoconfig so no ep0 */
2279 if (link)
2280 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
2281 ep->gadget = &udc->gadget;
2282 ep->qh = &udc->ep_qh[index];
2283
2284 return 0;
2285}
2286
2287/* Driver probe function
2288 * all intialize operations implemented here except enabling usb_intr reg
2289 */
2290static int __init fsl_udc_probe(struct platform_device *pdev)
2291{
2292 struct resource *res;
2293 int ret = -ENODEV;
2294 unsigned int i;
2295
2296 if (strcmp(pdev->name, driver_name)) {
2297 VDBG("Wrong device\n");
2298 return -ENODEV;
2299 }
2300
2301 /* board setup should have been done in the platform code */
2302
2303 /* Initialize the udc structure including QH member and other member */
2304 udc_controller = struct_udc_setup(pdev);
2305 if (!udc_controller) {
2306 VDBG("udc_controller is NULL \n");
2307 return -ENOMEM;
2308 }
2309
2310 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2311 if (!res)
2312 return -ENXIO;
2313
2314 if (!request_mem_region(res->start, res->end - res->start + 1,
2315 driver_name)) {
2316 ERR("request mem region for %s failed \n", pdev->name);
2317 return -EBUSY;
2318 }
2319
2320 dr_regs = ioremap(res->start, res->end - res->start + 1);
2321 if (!dr_regs) {
2322 ret = -ENOMEM;
2323 goto err1;
2324 }
2325
2326 usb_sys_regs = (struct usb_sys_interface *)
2327 ((u32)dr_regs + USB_DR_SYS_OFFSET);
2328
2329 udc_controller->irq = platform_get_irq(pdev, 0);
2330 if (!udc_controller->irq) {
2331 ret = -ENODEV;
2332 goto err2;
2333 }
2334
2335 ret = request_irq(udc_controller->irq, fsl_udc_irq, SA_SHIRQ,
2336 driver_name, udc_controller);
2337 if (ret != 0) {
2338 ERR("cannot request irq %d err %d \n",
2339 udc_controller->irq, ret);
2340 goto err2;
2341 }
2342
2343 /* initialize usb hw reg except for regs for EP,
2344 * leave usbintr reg untouched */
2345 dr_controller_setup(udc_controller);
2346
2347 /* Setup gadget structure */
2348 udc_controller->gadget.ops = &fsl_gadget_ops;
2349 udc_controller->gadget.is_dualspeed = 1;
2350 udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
2351 INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
2352 udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
2353 udc_controller->gadget.name = driver_name;
2354
2355 /* Setup gadget.dev and register with kernel */
2356 strcpy(udc_controller->gadget.dev.bus_id, "gadget");
2357 udc_controller->gadget.dev.release = fsl_udc_release;
2358 udc_controller->gadget.dev.parent = &pdev->dev;
2359 ret = device_register(&udc_controller->gadget.dev);
2360 if (ret < 0)
2361 goto err3;
2362
2363 /* setup QH and epctrl for ep0 */
2364 ep0_setup(udc_controller);
2365
2366 /* setup udc->eps[] for ep0 */
2367 struct_ep_setup(udc_controller, 0, "ep0", 0);
2368 /* for ep0: the desc defined here;
2369 * for other eps, gadget layer called ep_enable with defined desc
2370 */
2371 udc_controller->eps[0].desc = &fsl_ep0_desc;
2372 udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD;
2373
2374 /* setup the udc->eps[] for non-control endpoints and link
2375 * to gadget.ep_list */
2376 for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) {
2377 char name[14];
2378
2379 sprintf(name, "ep%dout", i);
2380 struct_ep_setup(udc_controller, i * 2, name, 1);
2381 sprintf(name, "ep%din", i);
2382 struct_ep_setup(udc_controller, i * 2 + 1, name, 1);
2383 }
2384
2385 /* use dma_pool for TD management */
2386 udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev,
2387 sizeof(struct ep_td_struct),
2388 DTD_ALIGNMENT, UDC_DMA_BOUNDARY);
2389 if (udc_controller->td_pool == NULL) {
2390 ret = -ENOMEM;
2391 goto err4;
2392 }
2393 create_proc_file();
2394 return 0;
2395
2396err4:
2397 device_unregister(&udc_controller->gadget.dev);
2398err3:
2399 free_irq(udc_controller->irq, udc_controller);
2400err2:
2401 iounmap(dr_regs);
2402err1:
2403 release_mem_region(res->start, res->end - res->start + 1);
2404 return ret;
2405}
2406
2407/* Driver removal function
2408 * Free resources and finish pending transactions
2409 */
2410static int __exit fsl_udc_remove(struct platform_device *pdev)
2411{
2412 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2413
2414 DECLARE_COMPLETION(done);
2415
2416 if (!udc_controller)
2417 return -ENODEV;
2418 udc_controller->done = &done;
2419
2420 /* DR has been stopped in usb_gadget_unregister_driver() */
2421 remove_proc_file();
2422
2423 /* Free allocated memory */
2424 kfree(udc_controller->status_req->req.buf);
2425 kfree(udc_controller->status_req);
2426 kfree(udc_controller->eps);
2427
2428 dma_pool_destroy(udc_controller->td_pool);
2429 free_irq(udc_controller->irq, udc_controller);
2430 iounmap(dr_regs);
2431 release_mem_region(res->start, res->end - res->start + 1);
2432
2433 device_unregister(&udc_controller->gadget.dev);
2434 /* free udc --wait for the release() finished */
2435 wait_for_completion(&done);
2436
2437 return 0;
2438}
2439
2440/*-----------------------------------------------------------------
2441 * Modify Power management attributes
2442 * Used by OTG statemachine to disable gadget temporarily
2443 -----------------------------------------------------------------*/
2444static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state)
2445{
2446 dr_controller_stop(udc_controller);
2447 return 0;
2448}
2449
2450/*-----------------------------------------------------------------
2451 * Invoked on USB resume. May be called in_interrupt.
2452 * Here we start the DR controller and enable the irq
2453 *-----------------------------------------------------------------*/
2454static int fsl_udc_resume(struct platform_device *pdev)
2455{
2456 /* Enable DR irq reg and set controller Run */
2457 if (udc_controller->stopped) {
2458 dr_controller_setup(udc_controller);
2459 dr_controller_run(udc_controller);
2460 }
2461 udc_controller->usb_state = USB_STATE_ATTACHED;
2462 udc_controller->ep0_state = WAIT_FOR_SETUP;
2463 udc_controller->ep0_dir = 0;
2464 return 0;
2465}
2466
2467/*-------------------------------------------------------------------------
2468 Register entry point for the peripheral controller driver
2469--------------------------------------------------------------------------*/
2470
2471static struct platform_driver udc_driver = {
2472 .remove = __exit_p(fsl_udc_remove),
2473 /* these suspend and resume are not usb suspend and resume */
2474 .suspend = fsl_udc_suspend,
2475 .resume = fsl_udc_resume,
2476 .driver = {
2477 .name = (char *)driver_name,
2478 .owner = THIS_MODULE,
2479 },
2480};
2481
2482static int __init udc_init(void)
2483{
2484 printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION);
2485 return platform_driver_probe(&udc_driver, fsl_udc_probe);
2486}
2487
2488module_init(udc_init);
2489
2490static void __exit udc_exit(void)
2491{
2492 platform_driver_unregister(&udc_driver);
2493 printk("%s unregistered \n", driver_desc);
2494}
2495
2496module_exit(udc_exit);
2497
2498MODULE_DESCRIPTION(DRIVER_DESC);
2499MODULE_AUTHOR(DRIVER_AUTHOR);
2500MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
new file mode 100644
index 000000000000..c6291e046507
--- /dev/null
+++ b/drivers/usb/gadget/fsl_usb2_udc.h
@@ -0,0 +1,579 @@
1/*
2 * Freescale USB device/endpoint management registers
3 */
4#ifndef __FSL_USB2_UDC_H
5#define __FSL_USB2_UDC_H
6
7/* ### define USB registers here
8 */
9#define USB_MAX_CTRL_PAYLOAD 64
10#define USB_DR_SYS_OFFSET 0x400
11
12 /* USB DR device mode registers (Little Endian) */
13struct usb_dr_device {
14 /* Capability register */
15 u8 res1[256];
16 u16 caplength; /* Capability Register Length */
17 u16 hciversion; /* Host Controller Interface Version */
18 u32 hcsparams; /* Host Controller Structual Parameters */
19 u32 hccparams; /* Host Controller Capability Parameters */
20 u8 res2[20];
21 u32 dciversion; /* Device Controller Interface Version */
22 u32 dccparams; /* Device Controller Capability Parameters */
23 u8 res3[24];
24 /* Operation register */
25 u32 usbcmd; /* USB Command Register */
26 u32 usbsts; /* USB Status Register */
27 u32 usbintr; /* USB Interrupt Enable Register */
28 u32 frindex; /* Frame Index Register */
29 u8 res4[4];
30 u32 deviceaddr; /* Device Address */
31 u32 endpointlistaddr; /* Endpoint List Address Register */
32 u8 res5[4];
33 u32 burstsize; /* Master Interface Data Burst Size Register */
34 u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */
35 u8 res6[24];
36 u32 configflag; /* Configure Flag Register */
37 u32 portsc1; /* Port 1 Status and Control Register */
38 u8 res7[28];
39 u32 otgsc; /* On-The-Go Status and Control */
40 u32 usbmode; /* USB Mode Register */
41 u32 endptsetupstat; /* Endpoint Setup Status Register */
42 u32 endpointprime; /* Endpoint Initialization Register */
43 u32 endptflush; /* Endpoint Flush Register */
44 u32 endptstatus; /* Endpoint Status Register */
45 u32 endptcomplete; /* Endpoint Complete Register */
46 u32 endptctrl[6]; /* Endpoint Control Registers */
47};
48
49 /* USB DR host mode registers (Little Endian) */
50struct usb_dr_host {
51 /* Capability register */
52 u8 res1[256];
53 u16 caplength; /* Capability Register Length */
54 u16 hciversion; /* Host Controller Interface Version */
55 u32 hcsparams; /* Host Controller Structual Parameters */
56 u32 hccparams; /* Host Controller Capability Parameters */
57 u8 res2[20];
58 u32 dciversion; /* Device Controller Interface Version */
59 u32 dccparams; /* Device Controller Capability Parameters */
60 u8 res3[24];
61 /* Operation register */
62 u32 usbcmd; /* USB Command Register */
63 u32 usbsts; /* USB Status Register */
64 u32 usbintr; /* USB Interrupt Enable Register */
65 u32 frindex; /* Frame Index Register */
66 u8 res4[4];
67 u32 periodiclistbase; /* Periodic Frame List Base Address Register */
68 u32 asynclistaddr; /* Current Asynchronous List Address Register */
69 u8 res5[4];
70 u32 burstsize; /* Master Interface Data Burst Size Register */
71 u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */
72 u8 res6[24];
73 u32 configflag; /* Configure Flag Register */
74 u32 portsc1; /* Port 1 Status and Control Register */
75 u8 res7[28];
76 u32 otgsc; /* On-The-Go Status and Control */
77 u32 usbmode; /* USB Mode Register */
78 u32 endptsetupstat; /* Endpoint Setup Status Register */
79 u32 endpointprime; /* Endpoint Initialization Register */
80 u32 endptflush; /* Endpoint Flush Register */
81 u32 endptstatus; /* Endpoint Status Register */
82 u32 endptcomplete; /* Endpoint Complete Register */
83 u32 endptctrl[6]; /* Endpoint Control Registers */
84};
85
86 /* non-EHCI USB system interface registers (Big Endian) */
87struct usb_sys_interface {
88 u32 snoop1;
89 u32 snoop2;
90 u32 age_cnt_thresh; /* Age Count Threshold Register */
91 u32 pri_ctrl; /* Priority Control Register */
92 u32 si_ctrl; /* System Interface Control Register */
93 u8 res[236];
94 u32 control; /* General Purpose Control Register */
95};
96
97/* ep0 transfer state */
98#define WAIT_FOR_SETUP 0
99#define DATA_STATE_XMIT 1
100#define DATA_STATE_NEED_ZLP 2
101#define WAIT_FOR_OUT_STATUS 3
102#define DATA_STATE_RECV 4
103
104/* Frame Index Register Bit Masks */
105#define USB_FRINDEX_MASKS 0x3fff
106/* USB CMD Register Bit Masks */
107#define USB_CMD_RUN_STOP 0x00000001
108#define USB_CMD_CTRL_RESET 0x00000002
109#define USB_CMD_PERIODIC_SCHEDULE_EN 0x00000010
110#define USB_CMD_ASYNC_SCHEDULE_EN 0x00000020
111#define USB_CMD_INT_AA_DOORBELL 0x00000040
112#define USB_CMD_ASP 0x00000300
113#define USB_CMD_ASYNC_SCH_PARK_EN 0x00000800
114#define USB_CMD_SUTW 0x00002000
115#define USB_CMD_ATDTW 0x00004000
116#define USB_CMD_ITC 0x00FF0000
117
118/* bit 15,3,2 are frame list size */
119#define USB_CMD_FRAME_SIZE_1024 0x00000000
120#define USB_CMD_FRAME_SIZE_512 0x00000004
121#define USB_CMD_FRAME_SIZE_256 0x00000008
122#define USB_CMD_FRAME_SIZE_128 0x0000000C
123#define USB_CMD_FRAME_SIZE_64 0x00008000
124#define USB_CMD_FRAME_SIZE_32 0x00008004
125#define USB_CMD_FRAME_SIZE_16 0x00008008
126#define USB_CMD_FRAME_SIZE_8 0x0000800C
127
128/* bit 9-8 are async schedule park mode count */
129#define USB_CMD_ASP_00 0x00000000
130#define USB_CMD_ASP_01 0x00000100
131#define USB_CMD_ASP_10 0x00000200
132#define USB_CMD_ASP_11 0x00000300
133#define USB_CMD_ASP_BIT_POS 8
134
135/* bit 23-16 are interrupt threshold control */
136#define USB_CMD_ITC_NO_THRESHOLD 0x00000000
137#define USB_CMD_ITC_1_MICRO_FRM 0x00010000
138#define USB_CMD_ITC_2_MICRO_FRM 0x00020000
139#define USB_CMD_ITC_4_MICRO_FRM 0x00040000
140#define USB_CMD_ITC_8_MICRO_FRM 0x00080000
141#define USB_CMD_ITC_16_MICRO_FRM 0x00100000
142#define USB_CMD_ITC_32_MICRO_FRM 0x00200000
143#define USB_CMD_ITC_64_MICRO_FRM 0x00400000
144#define USB_CMD_ITC_BIT_POS 16
145
146/* USB STS Register Bit Masks */
147#define USB_STS_INT 0x00000001
148#define USB_STS_ERR 0x00000002
149#define USB_STS_PORT_CHANGE 0x00000004
150#define USB_STS_FRM_LST_ROLL 0x00000008
151#define USB_STS_SYS_ERR 0x00000010
152#define USB_STS_IAA 0x00000020
153#define USB_STS_RESET 0x00000040
154#define USB_STS_SOF 0x00000080
155#define USB_STS_SUSPEND 0x00000100
156#define USB_STS_HC_HALTED 0x00001000
157#define USB_STS_RCL 0x00002000
158#define USB_STS_PERIODIC_SCHEDULE 0x00004000
159#define USB_STS_ASYNC_SCHEDULE 0x00008000
160
161/* USB INTR Register Bit Masks */
162#define USB_INTR_INT_EN 0x00000001
163#define USB_INTR_ERR_INT_EN 0x00000002
164#define USB_INTR_PTC_DETECT_EN 0x00000004
165#define USB_INTR_FRM_LST_ROLL_EN 0x00000008
166#define USB_INTR_SYS_ERR_EN 0x00000010
167#define USB_INTR_ASYN_ADV_EN 0x00000020
168#define USB_INTR_RESET_EN 0x00000040
169#define USB_INTR_SOF_EN 0x00000080
170#define USB_INTR_DEVICE_SUSPEND 0x00000100
171
172/* Device Address bit masks */
173#define USB_DEVICE_ADDRESS_MASK 0xFE000000
174#define USB_DEVICE_ADDRESS_BIT_POS 25
175
176/* endpoint list address bit masks */
177#define USB_EP_LIST_ADDRESS_MASK 0xfffff800
178
179/* PORTSCX Register Bit Masks */
180#define PORTSCX_CURRENT_CONNECT_STATUS 0x00000001
181#define PORTSCX_CONNECT_STATUS_CHANGE 0x00000002
182#define PORTSCX_PORT_ENABLE 0x00000004
183#define PORTSCX_PORT_EN_DIS_CHANGE 0x00000008
184#define PORTSCX_OVER_CURRENT_ACT 0x00000010
185#define PORTSCX_OVER_CURRENT_CHG 0x00000020
186#define PORTSCX_PORT_FORCE_RESUME 0x00000040
187#define PORTSCX_PORT_SUSPEND 0x00000080
188#define PORTSCX_PORT_RESET 0x00000100
189#define PORTSCX_LINE_STATUS_BITS 0x00000C00
190#define PORTSCX_PORT_POWER 0x00001000
191#define PORTSCX_PORT_INDICTOR_CTRL 0x0000C000
192#define PORTSCX_PORT_TEST_CTRL 0x000F0000
193#define PORTSCX_WAKE_ON_CONNECT_EN 0x00100000
194#define PORTSCX_WAKE_ON_CONNECT_DIS 0x00200000
195#define PORTSCX_WAKE_ON_OVER_CURRENT 0x00400000
196#define PORTSCX_PHY_LOW_POWER_SPD 0x00800000
197#define PORTSCX_PORT_FORCE_FULL_SPEED 0x01000000
198#define PORTSCX_PORT_SPEED_MASK 0x0C000000
199#define PORTSCX_PORT_WIDTH 0x10000000
200#define PORTSCX_PHY_TYPE_SEL 0xC0000000
201
202/* bit 11-10 are line status */
203#define PORTSCX_LINE_STATUS_SE0 0x00000000
204#define PORTSCX_LINE_STATUS_JSTATE 0x00000400
205#define PORTSCX_LINE_STATUS_KSTATE 0x00000800
206#define PORTSCX_LINE_STATUS_UNDEF 0x00000C00
207#define PORTSCX_LINE_STATUS_BIT_POS 10
208
209/* bit 15-14 are port indicator control */
210#define PORTSCX_PIC_OFF 0x00000000
211#define PORTSCX_PIC_AMBER 0x00004000
212#define PORTSCX_PIC_GREEN 0x00008000
213#define PORTSCX_PIC_UNDEF 0x0000C000
214#define PORTSCX_PIC_BIT_POS 14
215
216/* bit 19-16 are port test control */
217#define PORTSCX_PTC_DISABLE 0x00000000
218#define PORTSCX_PTC_JSTATE 0x00010000
219#define PORTSCX_PTC_KSTATE 0x00020000
220#define PORTSCX_PTC_SEQNAK 0x00030000
221#define PORTSCX_PTC_PACKET 0x00040000
222#define PORTSCX_PTC_FORCE_EN 0x00050000
223#define PORTSCX_PTC_BIT_POS 16
224
225/* bit 27-26 are port speed */
226#define PORTSCX_PORT_SPEED_FULL 0x00000000
227#define PORTSCX_PORT_SPEED_LOW 0x04000000
228#define PORTSCX_PORT_SPEED_HIGH 0x08000000
229#define PORTSCX_PORT_SPEED_UNDEF 0x0C000000
230#define PORTSCX_SPEED_BIT_POS 26
231
232/* bit 28 is parallel transceiver width for UTMI interface */
233#define PORTSCX_PTW 0x10000000
234#define PORTSCX_PTW_8BIT 0x00000000
235#define PORTSCX_PTW_16BIT 0x10000000
236
237/* bit 31-30 are port transceiver select */
238#define PORTSCX_PTS_UTMI 0x00000000
239#define PORTSCX_PTS_ULPI 0x80000000
240#define PORTSCX_PTS_FSLS 0xC0000000
241#define PORTSCX_PTS_BIT_POS 30
242
243/* otgsc Register Bit Masks */
244#define OTGSC_CTRL_VUSB_DISCHARGE 0x00000001
245#define OTGSC_CTRL_VUSB_CHARGE 0x00000002
246#define OTGSC_CTRL_OTG_TERM 0x00000008
247#define OTGSC_CTRL_DATA_PULSING 0x00000010
248#define OTGSC_STS_USB_ID 0x00000100
249#define OTGSC_STS_A_VBUS_VALID 0x00000200
250#define OTGSC_STS_A_SESSION_VALID 0x00000400
251#define OTGSC_STS_B_SESSION_VALID 0x00000800
252#define OTGSC_STS_B_SESSION_END 0x00001000
253#define OTGSC_STS_1MS_TOGGLE 0x00002000
254#define OTGSC_STS_DATA_PULSING 0x00004000
255#define OTGSC_INTSTS_USB_ID 0x00010000
256#define OTGSC_INTSTS_A_VBUS_VALID 0x00020000
257#define OTGSC_INTSTS_A_SESSION_VALID 0x00040000
258#define OTGSC_INTSTS_B_SESSION_VALID 0x00080000
259#define OTGSC_INTSTS_B_SESSION_END 0x00100000
260#define OTGSC_INTSTS_1MS 0x00200000
261#define OTGSC_INTSTS_DATA_PULSING 0x00400000
262#define OTGSC_INTR_USB_ID 0x01000000
263#define OTGSC_INTR_A_VBUS_VALID 0x02000000
264#define OTGSC_INTR_A_SESSION_VALID 0x04000000
265#define OTGSC_INTR_B_SESSION_VALID 0x08000000
266#define OTGSC_INTR_B_SESSION_END 0x10000000
267#define OTGSC_INTR_1MS_TIMER 0x20000000
268#define OTGSC_INTR_DATA_PULSING 0x40000000
269
270/* USB MODE Register Bit Masks */
271#define USB_MODE_CTRL_MODE_IDLE 0x00000000
272#define USB_MODE_CTRL_MODE_DEVICE 0x00000002
273#define USB_MODE_CTRL_MODE_HOST 0x00000003
274#define USB_MODE_CTRL_MODE_RSV 0x00000001
275#define USB_MODE_SETUP_LOCK_OFF 0x00000008
276#define USB_MODE_STREAM_DISABLE 0x00000010
277/* Endpoint Flush Register */
278#define EPFLUSH_TX_OFFSET 0x00010000
279#define EPFLUSH_RX_OFFSET 0x00000000
280
281/* Endpoint Setup Status bit masks */
282#define EP_SETUP_STATUS_MASK 0x0000003F
283#define EP_SETUP_STATUS_EP0 0x00000001
284
285/* ENDPOINTCTRLx Register Bit Masks */
286#define EPCTRL_TX_ENABLE 0x00800000
287#define EPCTRL_TX_DATA_TOGGLE_RST 0x00400000 /* Not EP0 */
288#define EPCTRL_TX_DATA_TOGGLE_INH 0x00200000 /* Not EP0 */
289#define EPCTRL_TX_TYPE 0x000C0000
290#define EPCTRL_TX_DATA_SOURCE 0x00020000 /* Not EP0 */
291#define EPCTRL_TX_EP_STALL 0x00010000
292#define EPCTRL_RX_ENABLE 0x00000080
293#define EPCTRL_RX_DATA_TOGGLE_RST 0x00000040 /* Not EP0 */
294#define EPCTRL_RX_DATA_TOGGLE_INH 0x00000020 /* Not EP0 */
295#define EPCTRL_RX_TYPE 0x0000000C
296#define EPCTRL_RX_DATA_SINK 0x00000002 /* Not EP0 */
297#define EPCTRL_RX_EP_STALL 0x00000001
298
299/* bit 19-18 and 3-2 are endpoint type */
300#define EPCTRL_EP_TYPE_CONTROL 0
301#define EPCTRL_EP_TYPE_ISO 1
302#define EPCTRL_EP_TYPE_BULK 2
303#define EPCTRL_EP_TYPE_INTERRUPT 3
304#define EPCTRL_TX_EP_TYPE_SHIFT 18
305#define EPCTRL_RX_EP_TYPE_SHIFT 2
306
307/* SNOOPn Register Bit Masks */
308#define SNOOP_ADDRESS_MASK 0xFFFFF000
309#define SNOOP_SIZE_ZERO 0x00 /* snooping disable */
310#define SNOOP_SIZE_4KB 0x0B /* 4KB snoop size */
311#define SNOOP_SIZE_8KB 0x0C
312#define SNOOP_SIZE_16KB 0x0D
313#define SNOOP_SIZE_32KB 0x0E
314#define SNOOP_SIZE_64KB 0x0F
315#define SNOOP_SIZE_128KB 0x10
316#define SNOOP_SIZE_256KB 0x11
317#define SNOOP_SIZE_512KB 0x12
318#define SNOOP_SIZE_1MB 0x13
319#define SNOOP_SIZE_2MB 0x14
320#define SNOOP_SIZE_4MB 0x15
321#define SNOOP_SIZE_8MB 0x16
322#define SNOOP_SIZE_16MB 0x17
323#define SNOOP_SIZE_32MB 0x18
324#define SNOOP_SIZE_64MB 0x19
325#define SNOOP_SIZE_128MB 0x1A
326#define SNOOP_SIZE_256MB 0x1B
327#define SNOOP_SIZE_512MB 0x1C
328#define SNOOP_SIZE_1GB 0x1D
329#define SNOOP_SIZE_2GB 0x1E /* 2GB snoop size */
330
331/* pri_ctrl Register Bit Masks */
332#define PRI_CTRL_PRI_LVL1 0x0000000C
333#define PRI_CTRL_PRI_LVL0 0x00000003
334
335/* si_ctrl Register Bit Masks */
336#define SI_CTRL_ERR_DISABLE 0x00000010
337#define SI_CTRL_IDRC_DISABLE 0x00000008
338#define SI_CTRL_RD_SAFE_EN 0x00000004
339#define SI_CTRL_RD_PREFETCH_DISABLE 0x00000002
340#define SI_CTRL_RD_PREFEFETCH_VAL 0x00000001
341
342/* control Register Bit Masks */
343#define USB_CTRL_IOENB 0x00000004
344#define USB_CTRL_ULPI_INT0EN 0x00000001
345
346/* Endpoint Queue Head data struct
347 * Rem: all the variables of qh are LittleEndian Mode
348 * and NEXT_POINTER_MASK should operate on a LittleEndian, Phy Addr
349 */
350struct ep_queue_head {
351 u32 max_pkt_length; /* Mult(31-30) , Zlt(29) , Max Pkt len
352 and IOS(15) */
353 u32 curr_dtd_ptr; /* Current dTD Pointer(31-5) */
354 u32 next_dtd_ptr; /* Next dTD Pointer(31-5), T(0) */
355 u32 size_ioc_int_sts; /* Total bytes (30-16), IOC (15),
356 MultO(11-10), STS (7-0) */
357 u32 buff_ptr0; /* Buffer pointer Page 0 (31-12) */
358 u32 buff_ptr1; /* Buffer pointer Page 1 (31-12) */
359 u32 buff_ptr2; /* Buffer pointer Page 2 (31-12) */
360 u32 buff_ptr3; /* Buffer pointer Page 3 (31-12) */
361 u32 buff_ptr4; /* Buffer pointer Page 4 (31-12) */
362 u32 res1;
363 u8 setup_buffer[8]; /* Setup data 8 bytes */
364 u32 res2[4];
365};
366
367/* Endpoint Queue Head Bit Masks */
368#define EP_QUEUE_HEAD_MULT_POS 30
369#define EP_QUEUE_HEAD_ZLT_SEL 0x20000000
370#define EP_QUEUE_HEAD_MAX_PKT_LEN_POS 16
371#define EP_QUEUE_HEAD_MAX_PKT_LEN(ep_info) (((ep_info)>>16)&0x07ff)
372#define EP_QUEUE_HEAD_IOS 0x00008000
373#define EP_QUEUE_HEAD_NEXT_TERMINATE 0x00000001
374#define EP_QUEUE_HEAD_IOC 0x00008000
375#define EP_QUEUE_HEAD_MULTO 0x00000C00
376#define EP_QUEUE_HEAD_STATUS_HALT 0x00000040
377#define EP_QUEUE_HEAD_STATUS_ACTIVE 0x00000080
378#define EP_QUEUE_CURRENT_OFFSET_MASK 0x00000FFF
379#define EP_QUEUE_HEAD_NEXT_POINTER_MASK 0xFFFFFFE0
380#define EP_QUEUE_FRINDEX_MASK 0x000007FF
381#define EP_MAX_LENGTH_TRANSFER 0x4000
382
383/* Endpoint Transfer Descriptor data struct */
384/* Rem: all the variables of td are LittleEndian Mode */
385struct ep_td_struct {
386 u32 next_td_ptr; /* Next TD pointer(31-5), T(0) set
387 indicate invalid */
388 u32 size_ioc_sts; /* Total bytes (30-16), IOC (15),
389 MultO(11-10), STS (7-0) */
390 u32 buff_ptr0; /* Buffer pointer Page 0 */
391 u32 buff_ptr1; /* Buffer pointer Page 1 */
392 u32 buff_ptr2; /* Buffer pointer Page 2 */
393 u32 buff_ptr3; /* Buffer pointer Page 3 */
394 u32 buff_ptr4; /* Buffer pointer Page 4 */
395 u32 res;
396 /* 32 bytes */
397 dma_addr_t td_dma; /* dma address for this td */
398 /* virtual address of next td specified in next_td_ptr */
399 struct ep_td_struct *next_td_virt;
400};
401
402/* Endpoint Transfer Descriptor bit Masks */
403#define DTD_NEXT_TERMINATE 0x00000001
404#define DTD_IOC 0x00008000
405#define DTD_STATUS_ACTIVE 0x00000080
406#define DTD_STATUS_HALTED 0x00000040
407#define DTD_STATUS_DATA_BUFF_ERR 0x00000020
408#define DTD_STATUS_TRANSACTION_ERR 0x00000008
409#define DTD_RESERVED_FIELDS 0x80007300
410#define DTD_ADDR_MASK 0xFFFFFFE0
411#define DTD_PACKET_SIZE 0x7FFF0000
412#define DTD_LENGTH_BIT_POS 16
413#define DTD_ERROR_MASK (DTD_STATUS_HALTED | \
414 DTD_STATUS_DATA_BUFF_ERR | \
415 DTD_STATUS_TRANSACTION_ERR)
416/* Alignment requirements; must be a power of two */
417#define DTD_ALIGNMENT 0x20
418#define QH_ALIGNMENT 2048
419
420/* Controller dma boundary */
421#define UDC_DMA_BOUNDARY 0x1000
422
423/* -----------------------------------------------------------------------*/
424/* ##### enum data
425*/
426typedef enum {
427 e_ULPI,
428 e_UTMI_8BIT,
429 e_UTMI_16BIT,
430 e_SERIAL
431} e_PhyInterface;
432
433/*-------------------------------------------------------------------------*/
434
435/* ### driver private data
436 */
437struct fsl_req {
438 struct usb_request req;
439 struct list_head queue;
440 /* ep_queue() func will add
441 a request->queue into a udc_ep->queue 'd tail */
442 struct fsl_ep *ep;
443 unsigned mapped:1;
444
445 struct ep_td_struct *head, *tail; /* For dTD List
446 cpu endian Virtual addr */
447 unsigned int dtd_count;
448};
449
450#define REQ_UNCOMPLETE 1
451
452struct fsl_ep {
453 struct usb_ep ep;
454 struct list_head queue;
455 struct fsl_udc *udc;
456 struct ep_queue_head *qh;
457 const struct usb_endpoint_descriptor *desc;
458 struct usb_gadget *gadget;
459
460 char name[14];
461 unsigned stopped:1;
462};
463
464#define EP_DIR_IN 1
465#define EP_DIR_OUT 0
466
467struct fsl_udc {
468
469 struct usb_gadget gadget;
470 struct usb_gadget_driver *driver;
471 struct fsl_ep *eps;
472 unsigned int max_ep;
473 unsigned int irq;
474
475 struct usb_ctrlrequest local_setup_buff;
476 spinlock_t lock;
477 struct otg_transceiver *transceiver;
478 unsigned softconnect:1;
479 unsigned vbus_active:1;
480 unsigned stopped:1;
481 unsigned remote_wakeup:1;
482
483 struct ep_queue_head *ep_qh; /* Endpoints Queue-Head */
484 struct fsl_req *status_req; /* ep0 status request */
485 struct dma_pool *td_pool; /* dma pool for DTD */
486 enum fsl_usb2_phy_modes phy_mode;
487
488 size_t ep_qh_size; /* size after alignment adjustment*/
489 dma_addr_t ep_qh_dma; /* dma address of QH */
490
491 u32 max_pipes; /* Device max pipes */
492 u32 max_use_endpts; /* Max endpointes to be used */
493 u32 bus_reset; /* Device is bus reseting */
494 u32 resume_state; /* USB state to resume */
495 u32 usb_state; /* USB current state */
496 u32 usb_next_state; /* USB next state */
497 u32 ep0_state; /* Endpoint zero state */
498 u32 ep0_dir; /* Endpoint zero direction: can be
499 USB_DIR_IN or USB_DIR_OUT */
500 u32 usb_sof_count; /* SOF count */
501 u32 errors; /* USB ERRORs count */
502 u8 device_address; /* Device USB address */
503
504 struct completion *done; /* to make sure release() is done */
505};
506
507/*-------------------------------------------------------------------------*/
508
509#ifdef DEBUG
510#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt "\n", \
511 __FUNCTION__, ## args)
512#else
513#define DBG(fmt, args...) do{}while(0)
514#endif
515
516#if 0
517static void dump_msg(const char *label, const u8 * buf, unsigned int length)
518{
519 unsigned int start, num, i;
520 char line[52], *p;
521
522 if (length >= 512)
523 return;
524 DBG("%s, length %u:\n", label, length);
525 start = 0;
526 while (length > 0) {
527 num = min(length, 16u);
528 p = line;
529 for (i = 0; i < num; ++i) {
530 if (i == 8)
531 *p++ = ' ';
532 sprintf(p, " %02x", buf[i]);
533 p += 3;
534 }
535 *p = 0;
536 printk(KERN_DEBUG "%6x: %s\n", start, line);
537 buf += num;
538 start += num;
539 length -= num;
540 }
541}
542#endif
543
544#ifdef VERBOSE
545#define VDBG DBG
546#else
547#define VDBG(stuff...) do{}while(0)
548#endif
549
550#define ERR(stuff...) printk(KERN_ERR "udc: " stuff)
551#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff)
552#define INFO(stuff...) printk(KERN_INFO "udc: " stuff)
553
554/*-------------------------------------------------------------------------*/
555
556/* ### Add board specific defines here
557 */
558
559/*
560 * ### pipe direction macro from device view
561 */
562#define USB_RECV 0 /* OUT EP */
563#define USB_SEND 1 /* IN EP */
564
565/*
566 * ### internal used help routines.
567 */
568#define ep_index(EP) ((EP)->desc->bEndpointAddress&0xF)
569#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
570#define ep_is_in(EP) ( (ep_index(EP) == 0) ? (EP->udc->ep0_dir == \
571 USB_DIR_IN ):((EP)->desc->bEndpointAddress \
572 & USB_DIR_IN)==USB_DIR_IN)
573#define get_ep_by_pipe(udc, pipe) ((pipe == 1)? &udc->eps[0]: \
574 &udc->eps[pipe])
575#define get_pipe_by_windex(windex) ((windex & USB_ENDPOINT_NUMBER_MASK) \
576 * 2 + ((windex & USB_DIR_IN) ? 1 : 0))
577#define get_pipe_by_ep(EP) (ep_index(EP) * 2 + ep_is_in(EP))
578
579#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 18:51:34 -0500