1 /******************************************************************
2 * Copyright 2005 Mentor Graphics Corporation
3 * Copyright (C) 2005-2006 by Texas Instruments
5 * This file is part of the Inventra Controller Driver for Linux.
7 * The Inventra Controller Driver for Linux is free software; you
8 * can redistribute it and/or modify it under the terms of the GNU
9 * General Public License version 2 as published by the Free Software
12 * The Inventra Controller Driver for Linux is distributed in
13 * the hope that it will be useful, but WITHOUT ANY WARRANTY;
14 * without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 * License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with The Inventra Controller Driver for Linux ; if not,
20 * write to the Free Software Foundation, Inc., 59 Temple Place,
21 * Suite 330, Boston, MA 02111-1307 USA
23 * ANY DOWNLOAD, USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION
24 * OF THIS DRIVER INDICATES YOUR COMPLETE AND UNCONDITIONAL ACCEPTANCE
25 * OF THOSE TERMS.THIS DRIVER IS PROVIDED "AS IS" AND MENTOR GRAPHICS
26 * MAKES NO WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THIS DRIVER.
27 * MENTOR GRAPHICS SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES
28 * OF MERCHANTABILITY; FITNESS FOR A PARTICULAR PURPOSE AND
29 * NON-INFRINGEMENT. MENTOR GRAPHICS DOES NOT PROVIDE SUPPORT
30 * SERVICES OR UPDATES FOR THIS DRIVER, EVEN IF YOU ARE A MENTOR
31 * GRAPHICS SUPPORT CUSTOMER.
32 ******************************************************************/
34 #ifndef __MUSB_MUSBDEFS_H__
35 #define __MUSB_MUSBDEFS_H__
37 #include <linux/slab.h>
38 #include <linux/list.h>
39 #include <linux/interrupt.h>
40 #include <linux/smp_lock.h>
41 #include <linux/errno.h>
42 #include <linux/clk.h>
43 #include <linux/device.h>
44 #include <linux/usb/ch9.h>
45 #include <linux/usb_gadget.h>
46 #include <linux/usb.h>
47 #include <linux/usb/otg.h>
48 #include <linux/usb/musb.h>
58 #ifdef CONFIG_USB_MUSB_SOC
60 * Get core configuration from a header converted (by cfg_conv)
61 * from the Verilog config file generated by the core config utility
63 * For now we assume that header is provided along with other
64 * arch-specific files. Discrete chips will need a build tweak.
65 * So will using AHB IDs from silicon that provides them.
67 #include <asm/arch/hdrc_cnf.h>
73 #include "musb_gadget.h"
74 #include "../core/hcd.h"
75 #include "musb_host.h"
79 #ifdef CONFIG_USB_MUSB_OTG
81 #define is_peripheral_enabled(musb) ((musb)->board_mode != MUSB_HOST)
82 #define is_host_enabled(musb) ((musb)->board_mode != MUSB_PERIPHERAL)
83 #define is_otg_enabled(musb) ((musb)->board_mode == MUSB_OTG)
85 /* NOTE: otg and peripheral-only state machines start at B_IDLE.
86 * OTG or host-only go to A_IDLE when ID is sensed.
88 #define is_peripheral_active(m) (!(m)->bIsHost)
89 #define is_host_active(m) ((m)->bIsHost)
92 #define is_peripheral_enabled(musb) is_peripheral_capable()
93 #define is_host_enabled(musb) is_host_capable()
94 #define is_otg_enabled(musb) 0
96 #define is_peripheral_active(musb) is_peripheral_capable()
97 #define is_host_active(musb) is_host_capable()
100 #if defined(CONFIG_USB_MUSB_OTG) || defined(CONFIG_USB_MUSB_PERIPHERAL)
101 /* for some reason, the "select USB_GADGET_MUSB_HDRC" doesn't always
102 * override that choice selection (often USB_GADGET_DUMMY_HCD).
104 #ifndef CONFIG_USB_GADGET_MUSB_HDRC
105 #error bogus Kconfig output ... select CONFIG_USB_GADGET_MUSB_HDRC
107 #endif /* need MUSB gadget selection */
110 #ifdef CONFIG_PROC_FS
111 #include <linux/fs.h>
112 #define MUSB_CONFIG_PROC_FS
115 /****************************** PERIPHERAL ROLE *****************************/
117 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
119 #define is_peripheral_capable() (1)
121 extern irqreturn_t musb_g_ep0_irq(struct musb *);
122 extern void musb_g_tx(struct musb *, u8);
123 extern void musb_g_rx(struct musb *, u8);
124 extern void musb_g_reset(struct musb *);
125 extern void musb_g_suspend(struct musb *);
126 extern void musb_g_resume(struct musb *);
127 extern void musb_g_disconnect(struct musb *);
131 #define is_peripheral_capable() (0)
133 static inline irqreturn_t musb_g_ep0_irq(struct musb *m) { return IRQ_NONE; }
134 static inline void musb_g_reset(struct musb *m) {}
135 static inline void musb_g_suspend(struct musb *m) {}
136 static inline void musb_g_resume(struct musb *m) {}
137 static inline void musb_g_disconnect(struct musb *m) {}
141 /****************************** HOST ROLE ***********************************/
143 #ifdef CONFIG_USB_MUSB_HDRC_HCD
145 #define is_host_capable() (1)
147 extern irqreturn_t musb_h_ep0_irq(struct musb *);
148 extern void musb_host_tx(struct musb *, u8);
149 extern void musb_host_rx(struct musb *, u8);
153 #define is_host_capable() (0)
155 static inline irqreturn_t musb_h_ep0_irq(struct musb *m) { return IRQ_NONE; }
156 static inline void musb_host_tx(struct musb *m, u8 e) {}
157 static inline void musb_host_rx(struct musb *m, u8 e) {}
162 /****************************** CONSTANTS ********************************/
171 #ifndef MUSB_C_NUM_EPS
172 #define MUSB_C_NUM_EPS ((u8)16)
175 #ifndef MUSB_MAX_END0_PACKET
176 #define MUSB_MAX_END0_PACKET ((u16)MGC_END0_FIFOSIZE)
179 /* host side ep0 states */
180 enum musb_h_ep0_state {
182 MGC_END0_START, /* expect ack of setup */
183 MGC_END0_IN, /* expect IN DATA */
184 MGC_END0_OUT, /* expect ack of OUT DATA */
185 MGC_END0_STATUS, /* expect ack of STATUS */
186 } __attribute__ ((packed));
188 /* peripheral side ep0 states */
189 enum musb_g_ep0_state {
190 MGC_END0_STAGE_SETUP, /* idle, waiting for setup */
191 MGC_END0_STAGE_TX, /* IN data */
192 MGC_END0_STAGE_RX, /* OUT data */
193 MGC_END0_STAGE_STATUSIN, /* (after OUT data) */
194 MGC_END0_STAGE_STATUSOUT, /* (after IN data) */
195 MGC_END0_STAGE_ACKWAIT, /* after zlp, before statusin */
196 } __attribute__ ((packed));
198 /* OTG protocol constants */
199 #define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */
200 #define OTG_TIME_A_WAIT_BCON 0 /* 0=infinite; min 1000 msec */
201 #define OTG_TIME_A_IDLE_BDIS 200 /* msec (min) */
203 /*************************** REGISTER ACCESS ********************************/
205 /* Endpoint registers (other than dynfifo setup) can be accessed either
206 * directly with the "flat" model, or after setting up an index register.
209 #if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP2430)
210 /* REVISIT indexed access seemed to
211 * misbehave (on DaVinci) for at least peripheral IN ...
213 #define MUSB_FLAT_REG
216 /* TUSB mapping: "flat" plus ep0 special cases */
217 #if defined(CONFIG_USB_TUSB6010)
218 #define MGC_SelectEnd(_pBase, _bEnd) \
219 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
220 #define MGC_END_OFFSET MGC_TUSB_OFFSET
222 /* "flat" mapping: each endpoint has its own i/o address */
223 #elif defined(MUSB_FLAT_REG)
224 #define MGC_SelectEnd(_pBase, _bEnd) (((void)(_pBase)),((void)(_bEnd)))
225 #define MGC_END_OFFSET MGC_FLAT_OFFSET
227 /* "indexed" mapping: INDEX register controls register bank select */
229 #define MGC_SelectEnd(_pBase, _bEnd) \
230 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
231 #define MGC_END_OFFSET MGC_INDEXED_OFFSET
234 /****************************** FUNCTIONS ********************************/
236 #define MUSB_HST_MODE(_pthis)\
237 { (_pthis)->bIsHost=TRUE; }
238 #define MUSB_DEV_MODE(_pthis) \
239 { (_pthis)->bIsHost=FALSE; }
241 #define test_devctl_hst_mode(_x) \
242 (musb_readb((_x)->pRegs, MGC_O_HDRC_DEVCTL)&MGC_M_DEVCTL_HM)
244 #define MUSB_MODE(musb) ((musb)->bIsHost ? "Host" : "Peripheral")
246 /************************** Ep Configuration ********************************/
248 /** The End point descriptor */
249 struct MUSB_EpFifoDescriptor {
250 u8 bType; /* 0 for autoconfig, CNTR, ISOC, BULK, INTR */
251 u8 bDir; /* 0 for autoconfig, INOUT, IN, OUT */
252 int wSize; /* 0 for autoconfig, or the size */
255 #define MUSB_EPD_AUTOCONFIG 0
257 #define MUSB_EPD_T_CNTRL 1
258 #define MUSB_EPD_T_ISOC 2
259 #define MUSB_EPD_T_BULK 3
260 #define MUSB_EPD_T_INTR 4
262 #define MUSB_EPD_D_INOUT 0
263 #define MUSB_EPD_D_TX 1
264 #define MUSB_EPD_D_RX 2
266 /******************************** TYPES *************************************/
269 * struct musb_hw_ep - endpoint hardware (bidirectional)
271 * Ordered slightly for better cacheline locality.
278 #ifdef CONFIG_USB_TUSB6010
282 /* index in musb->aLocalEnd[] */
285 /* hardware configuration, possibly dynamic */
287 u8 tx_double_buffered;
288 u8 rx_double_buffered;
289 u16 wMaxPacketSizeTx;
290 u16 wMaxPacketSizeRx;
292 struct dma_channel *tx_channel;
293 struct dma_channel *rx_channel;
295 #ifdef CONFIG_USB_TUSB6010
296 /* TUSB has "asynchronous" and "synchronous" dma modes */
297 dma_addr_t fifo_async;
298 dma_addr_t fifo_sync;
301 #ifdef CONFIG_USB_MUSB_HDRC_HCD
302 void __iomem *target_regs;
304 /* currently scheduled peripheral endpoint */
305 struct musb_qh *in_qh;
306 struct musb_qh *out_qh;
312 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
313 /* peripheral side */
314 struct musb_ep ep_in; /* TX */
315 struct musb_ep ep_out; /* RX */
319 static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
321 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
322 return next_request(&hw_ep->ep_in);
328 static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
330 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
331 return next_request(&hw_ep->ep_out);
338 * struct musb - Driver instance data.
343 irqreturn_t (*isr)(int, void *);
344 struct work_struct irq_work;
346 #ifdef CONFIG_USB_MUSB_HDRC_HCD
348 /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
349 #define MUSB_PORT_STAT_RESUME (1 << 31)
352 unsigned long rh_timer;
354 enum musb_h_ep0_state bEnd0Stage;
356 /* bulk traffic normally dedicates endpoint hardware, and each
357 * direction has its own ring of host side endpoints.
358 * we try to progress the transfer at the head of each endpoint's
359 * queue until it completes or NAKs too much; then we try the next
362 struct musb_hw_ep *bulk_ep;
364 struct list_head control; /* of musb_qh */
365 struct list_head in_bulk; /* of musb_qh */
366 struct list_head out_bulk; /* of musb_qh */
367 struct musb_qh *periodic[32]; /* tree of interrupt+iso */
370 /* called with IRQs blocked; ON/nonzero implies starting a session,
371 * and waiting at least a_wait_vrise_tmout.
373 void (*board_set_vbus)(struct musb *, int is_on);
375 struct dma_controller *pDmaController;
377 struct device *controller;
378 void __iomem *ctrl_base;
381 #ifdef CONFIG_USB_TUSB6010
386 /* passed down from chip/board specific irq handlers */
391 struct otg_transceiver xceiv;
395 struct musb_hw_ep aLocalEnd[MUSB_C_NUM_EPS];
396 #define control_ep aLocalEnd
398 #define VBUSERR_RETRY_COUNT 3
403 u8 board_mode; /* enum musb_mode */
404 int (*board_set_power)(int state);
406 int (*set_clock)(struct clk *clk, int is_active);
408 u8 min_power; /* vbus for periph, in mA/2 */
410 /* active means connected and not suspended */
411 unsigned is_active:1;
413 unsigned bIsMultipoint:1;
415 unsigned bIgnoreDisconnect:1; /* during bus resets */
418 unsigned bBulkSplit:1;
419 #define can_bulk_split(musb,type) \
420 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkSplit)
422 #define can_bulk_split(musb,type) 0
426 unsigned bBulkCombine:1;
427 /* REVISIT allegedly doesn't work reliably */
429 #define can_bulk_combine(musb,type) \
430 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkCombine)
432 #define can_bulk_combine(musb,type) 0
435 #define can_bulk_combine(musb,type) 0
438 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
439 /* is_suspended means USB B_PERIPHERAL suspend */
440 unsigned is_suspended:1;
442 /* may_wakeup means remote wakeup is enabled */
443 unsigned may_wakeup:1;
445 /* is_self_powered is reported in device status and the
446 * config descriptor. is_bus_powered means B_PERIPHERAL
447 * draws some VBUS current; both can be true.
449 unsigned is_self_powered:1;
450 unsigned is_bus_powered:1;
452 unsigned bSetAddress:1;
453 unsigned bTestMode:1;
454 unsigned softconnect:1;
456 enum musb_g_ep0_state ep0_state;
459 u16 ackpend; /* ep0 */
460 struct usb_gadget g; /* the gadget */
461 struct usb_gadget_driver *pGadgetDriver; /* its driver */
464 #ifdef CONFIG_USB_MUSB_OTG
465 /* FIXME this can't be OTG-specific ... ? */
466 u8 bDelayPortPowerOff;
469 #ifdef MUSB_CONFIG_PROC_FS
470 struct proc_dir_entry *pProcEntry;
474 static inline void musb_set_vbus(struct musb *musb, int is_on)
476 musb->board_set_vbus(musb, is_on);
479 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
480 static inline struct musb *gadget_to_musb(struct usb_gadget *g)
482 return container_of(g, struct musb, g);
487 /***************************** Glue it together *****************************/
489 extern const char musb_driver_name[];
491 extern void musb_start(struct musb *pThis);
492 extern void musb_stop(struct musb *pThis);
494 extern void musb_write_fifo(struct musb_hw_ep *ep,
495 u16 wCount, const u8 * pSource);
496 extern void musb_read_fifo(struct musb_hw_ep *ep,
497 u16 wCount, u8 * pDest);
499 extern void musb_load_testpacket(struct musb *);
501 extern irqreturn_t musb_interrupt(struct musb *);
503 extern void musb_platform_enable(struct musb *musb);
504 extern void musb_platform_disable(struct musb *musb);
506 #ifdef CONFIG_USB_TUSB6010
507 extern void musb_platform_try_idle(struct musb *musb);
508 extern int musb_platform_get_vbus_status(struct musb *musb);
510 #define musb_platform_try_idle(x) do {} while (0)
511 #define musb_platform_get_vbus_status(x) 0
514 extern int __init musb_platform_init(struct musb *musb);
515 extern int musb_platform_exit(struct musb *musb);
517 /*-------------------------- ProcFS definitions ---------------------*/
519 struct proc_dir_entry;
521 #if (MUSB_DEBUG > 0) && defined(MUSB_CONFIG_PROC_FS)
522 extern struct proc_dir_entry *musb_debug_create(char *name,
524 extern void musb_debug_delete(char *name, struct musb *data);
527 static inline struct proc_dir_entry *musb_debug_create(char *name,
532 static inline void musb_debug_delete(char *name, struct musb *data)
537 #endif /* __MUSB_MUSBDEFS_H__ */