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/device.h>
43 #include <linux/usb/ch9.h>
44 #include <linux/usb_gadget.h>
45 #include <linux/usb.h>
46 #include <linux/usb/otg.h>
47 #include <linux/usb/musb.h>
57 #ifdef CONFIG_USB_MUSB_SOC
59 * Get core configuration from a header converted (by cfg_conv)
60 * from the Verilog config file generated by the core config utility
62 * For now we assume that header is provided along with other
63 * arch-specific files. Discrete chips will need a build tweak.
64 * So will using AHB IDs from silicon that provides them.
66 #include <asm/arch/hdrc_cnf.h>
72 #include "musb_gadget.h"
73 #include "../core/hcd.h"
74 #include "musb_host.h"
78 #ifdef CONFIG_USB_MUSB_OTG
80 #define is_peripheral_enabled(musb) ((musb)->board_mode != MUSB_HOST)
81 #define is_host_enabled(musb) ((musb)->board_mode != MUSB_PERIPHERAL)
82 #define is_otg_enabled(musb) ((musb)->board_mode == MUSB_OTG)
84 /* NOTE: otg and peripheral-only state machines start at B_IDLE.
85 * OTG or host-only go to A_IDLE when ID is sensed.
87 #define is_peripheral_active(m) (!(m)->bIsHost)
88 #define is_host_active(m) ((m)->bIsHost)
91 #define is_peripheral_enabled(musb) is_peripheral_capable()
92 #define is_host_enabled(musb) is_host_capable()
93 #define is_otg_enabled(musb) 0
95 #define is_peripheral_active(musb) is_peripheral_capable()
96 #define is_host_active(musb) is_host_capable()
99 #if defined(CONFIG_USB_MUSB_OTG) || defined(CONFIG_USB_MUSB_PERIPHERAL)
100 /* for some reason, the "select USB_GADGET_MUSB_HDRC" doesn't always
101 * override that choice selection (often USB_GADGET_DUMMY_HCD).
103 #ifndef CONFIG_USB_GADGET_MUSB_HDRC
104 #error bogus Kconfig output ... select CONFIG_USB_GADGET_MUSB_HDRC
106 #endif /* need MUSB gadget selection */
109 #ifdef CONFIG_PROC_FS
110 #include <linux/fs.h>
111 #define MUSB_CONFIG_PROC_FS
114 /****************************** PERIPHERAL ROLE *****************************/
116 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
118 #define is_peripheral_capable() (1)
120 extern irqreturn_t musb_g_ep0_irq(struct musb *);
121 extern void musb_g_tx(struct musb *, u8);
122 extern void musb_g_rx(struct musb *, u8);
123 extern void musb_g_reset(struct musb *);
124 extern void musb_g_suspend(struct musb *);
125 extern void musb_g_resume(struct musb *);
126 extern void musb_g_disconnect(struct musb *);
130 #define is_peripheral_capable() (0)
132 static inline irqreturn_t musb_g_ep0_irq(struct musb *m) { return IRQ_NONE; }
133 static inline void musb_g_reset(struct musb *m) {}
134 static inline void musb_g_suspend(struct musb *m) {}
135 static inline void musb_g_resume(struct musb *m) {}
136 static inline void musb_g_disconnect(struct musb *m) {}
140 /****************************** HOST ROLE ***********************************/
142 #ifdef CONFIG_USB_MUSB_HDRC_HCD
144 #define is_host_capable() (1)
146 extern irqreturn_t musb_h_ep0_irq(struct musb *);
147 extern void musb_host_tx(struct musb *, u8);
148 extern void musb_host_rx(struct musb *, u8);
152 #define is_host_capable() (0)
154 static inline irqreturn_t musb_h_ep0_irq(struct musb *m) { return IRQ_NONE; }
155 static inline void musb_host_tx(struct musb *m, u8 e) {}
156 static inline void musb_host_rx(struct musb *m, u8 e) {}
161 /****************************** CONSTANTS ********************************/
170 #ifndef MUSB_C_NUM_EPS
171 #define MUSB_C_NUM_EPS ((u8)16)
174 #ifndef MUSB_MAX_END0_PACKET
175 #define MUSB_MAX_END0_PACKET ((u16)MGC_END0_FIFOSIZE)
178 /* host side ep0 states */
179 enum musb_h_ep0_state {
181 MGC_END0_START, /* expect ack of setup */
182 MGC_END0_IN, /* expect IN DATA */
183 MGC_END0_OUT, /* expect ack of OUT DATA */
184 MGC_END0_STATUS, /* expect ack of STATUS */
185 } __attribute__ ((packed));
187 /* peripheral side ep0 states */
188 enum musb_g_ep0_state {
189 MGC_END0_STAGE_SETUP, /* idle, waiting for setup */
190 MGC_END0_STAGE_TX, /* IN data */
191 MGC_END0_STAGE_RX, /* OUT data */
192 MGC_END0_STAGE_STATUSIN, /* (after OUT data) */
193 MGC_END0_STAGE_STATUSOUT, /* (after IN data) */
194 MGC_END0_STAGE_ACKWAIT, /* after zlp, before statusin */
195 } __attribute__ ((packed));
197 /* OTG protocol constants */
198 #define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */
199 #define OTG_TIME_A_WAIT_BCON 0 /* 0=infinite; min 1000 msec */
200 #define OTG_TIME_A_IDLE_BDIS 200 /* msec (min) */
202 /*************************** REGISTER ACCESS ********************************/
204 /* Endpoint registers (other than dynfifo setup) can be accessed either
205 * directly with the "flat" model, or after setting up an index register.
208 #if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP243X)
209 /* REVISIT indexed access seemed to
210 * misbehave (on DaVinci) for at least peripheral IN ...
212 #define MUSB_FLAT_REG
215 /* TUSB mapping: "flat" plus ep0 special cases */
216 #if defined(CONFIG_USB_TUSB6010)
217 #define MGC_SelectEnd(_pBase, _bEnd) \
218 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
219 #define MGC_END_OFFSET MGC_TUSB_OFFSET
221 /* "flat" mapping: each endpoint has its own i/o address */
222 #elif defined(MUSB_FLAT_REG)
223 #define MGC_SelectEnd(_pBase, _bEnd) (((void)(_pBase)),((void)(_bEnd)))
224 #define MGC_END_OFFSET MGC_FLAT_OFFSET
226 /* "indexed" mapping: INDEX register controls register bank select */
228 #define MGC_SelectEnd(_pBase, _bEnd) \
229 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
230 #define MGC_END_OFFSET MGC_INDEXED_OFFSET
233 /****************************** FUNCTIONS ********************************/
235 #define MUSB_HST_MODE(_pthis)\
236 { (_pthis)->bIsHost=TRUE; }
237 #define MUSB_DEV_MODE(_pthis) \
238 { (_pthis)->bIsHost=FALSE; }
240 #define test_devctl_hst_mode(_x) \
241 (musb_readb((_x)->pRegs, MGC_O_HDRC_DEVCTL)&MGC_M_DEVCTL_HM)
243 #define MUSB_MODE(musb) ((musb)->bIsHost ? "Host" : "Peripheral")
245 /************************** Ep Configuration ********************************/
247 /** The End point descriptor */
248 struct MUSB_EpFifoDescriptor {
249 u8 bType; /* 0 for autoconfig, CNTR, ISOC, BULK, INTR */
250 u8 bDir; /* 0 for autoconfig, INOUT, IN, OUT */
251 int wSize; /* 0 for autoconfig, or the size */
254 #define MUSB_EPD_AUTOCONFIG 0
256 #define MUSB_EPD_T_CNTRL 1
257 #define MUSB_EPD_T_ISOC 2
258 #define MUSB_EPD_T_BULK 3
259 #define MUSB_EPD_T_INTR 4
261 #define MUSB_EPD_D_INOUT 0
262 #define MUSB_EPD_D_TX 1
263 #define MUSB_EPD_D_RX 2
265 /******************************** TYPES *************************************/
268 * struct musb_hw_ep - endpoint hardware (bidirectional)
270 * Ordered slightly for better cacheline locality.
277 #ifdef CONFIG_USB_TUSB6010
281 /* index in musb->aLocalEnd[] */
284 /* hardware configuration, possibly dynamic */
286 u8 tx_double_buffered;
287 u8 rx_double_buffered;
288 u16 wMaxPacketSizeTx;
289 u16 wMaxPacketSizeRx;
291 struct dma_channel *tx_channel;
292 struct dma_channel *rx_channel;
294 #ifdef CONFIG_USB_TUSB6010
295 /* TUSB has "asynchronous" and "synchronous" dma modes */
296 dma_addr_t fifo_async;
297 dma_addr_t fifo_sync;
300 #ifdef CONFIG_USB_MUSB_HDRC_HCD
301 void __iomem *target_regs;
303 /* currently scheduled peripheral endpoint */
304 struct musb_qh *in_qh;
305 struct musb_qh *out_qh;
311 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
312 /* peripheral side */
313 struct musb_ep ep_in; /* TX */
314 struct musb_ep ep_out; /* RX */
318 static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
320 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
321 return next_request(&hw_ep->ep_in);
327 static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
329 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
330 return next_request(&hw_ep->ep_out);
337 * struct musb - Driver instance data.
342 irqreturn_t (*isr)(int, void *);
343 struct work_struct irq_work;
345 #ifdef CONFIG_USB_MUSB_HDRC_HCD
347 /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
348 #define MUSB_PORT_STAT_RESUME (1 << 31)
351 unsigned long rh_timer;
353 enum musb_h_ep0_state bEnd0Stage;
355 /* bulk traffic normally dedicates endpoint hardware, and each
356 * direction has its own ring of host side endpoints.
357 * we try to progress the transfer at the head of each endpoint's
358 * queue until it completes or NAKs too much; then we try the next
361 struct musb_hw_ep *bulk_ep;
363 struct list_head control; /* of musb_qh */
364 struct list_head in_bulk; /* of musb_qh */
365 struct list_head out_bulk; /* of musb_qh */
366 struct musb_qh *periodic[32]; /* tree of interrupt+iso */
369 /* called with IRQs blocked; ON/nonzero implies starting a session,
370 * and waiting at least a_wait_vrise_tmout.
372 void (*board_set_vbus)(struct musb *, int is_on);
374 struct dma_controller *pDmaController;
376 struct device *controller;
377 void __iomem *ctrl_base;
380 #ifdef CONFIG_USB_TUSB6010
385 /* passed down from chip/board specific irq handlers */
390 struct otg_transceiver xceiv;
394 struct musb_hw_ep aLocalEnd[MUSB_C_NUM_EPS];
395 #define control_ep aLocalEnd
397 #define VBUSERR_RETRY_COUNT 3
402 u8 board_mode; /* enum musb_mode */
403 int (*board_set_power)(int state);
405 u8 min_power; /* vbus for periph, in mA/2 */
407 /* active means connected and not suspended */
408 unsigned is_active:1;
410 unsigned bIsMultipoint:1;
412 unsigned bIgnoreDisconnect:1; /* during bus resets */
415 unsigned bBulkSplit:1;
416 #define can_bulk_split(musb,type) \
417 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkSplit)
419 #define can_bulk_split(musb,type) 0
423 unsigned bBulkCombine:1;
424 /* REVISIT allegedly doesn't work reliably */
426 #define can_bulk_combine(musb,type) \
427 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkCombine)
429 #define can_bulk_combine(musb,type) 0
432 #define can_bulk_combine(musb,type) 0
435 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
436 /* may_wakeup means remote wakeup is enabled */
437 unsigned may_wakeup:1;
439 /* is_self_powered is reported in device status and the
440 * config descriptor. is_bus_powered means B_PERIPHERAL
441 * draws some VBUS current; both can be true.
443 unsigned is_self_powered:1;
444 unsigned is_bus_powered:1;
446 unsigned bSetAddress:1;
447 unsigned bTestMode:1;
448 unsigned softconnect:1;
450 enum musb_g_ep0_state ep0_state;
453 u16 ackpend; /* ep0 */
454 struct usb_gadget g; /* the gadget */
455 struct usb_gadget_driver *pGadgetDriver; /* its driver */
458 #ifdef CONFIG_USB_MUSB_OTG
459 /* FIXME this can't be OTG-specific ... ? */
460 u8 bDelayPortPowerOff;
463 #ifdef MUSB_CONFIG_PROC_FS
464 struct proc_dir_entry *pProcEntry;
468 static inline void musb_set_vbus(struct musb *musb, int is_on)
470 musb->board_set_vbus(musb, is_on);
473 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
474 static inline struct musb *gadget_to_musb(struct usb_gadget *g)
476 return container_of(g, struct musb, g);
481 /***************************** Glue it together *****************************/
483 extern const char musb_driver_name[];
485 extern void musb_start(struct musb *pThis);
486 extern void musb_stop(struct musb *pThis);
488 extern void musb_write_fifo(struct musb_hw_ep *ep,
489 u16 wCount, const u8 * pSource);
490 extern void musb_read_fifo(struct musb_hw_ep *ep,
491 u16 wCount, u8 * pDest);
493 extern void musb_load_testpacket(struct musb *);
495 extern irqreturn_t musb_interrupt(struct musb *);
497 extern void musb_platform_enable(struct musb *musb);
498 extern void musb_platform_disable(struct musb *musb);
500 #ifdef CONFIG_USB_TUSB6010
501 extern void musb_platform_try_idle(struct musb *musb);
502 extern int musb_platform_get_vbus_status(struct musb *musb);
504 #define musb_platform_try_idle(x) do {} while (0)
505 #define musb_platform_get_vbus_status(x) 0
508 extern int __init musb_platform_init(struct musb *musb);
509 extern int musb_platform_exit(struct musb *musb);
511 /*-------------------------- ProcFS definitions ---------------------*/
513 struct proc_dir_entry;
515 #if (MUSB_DEBUG > 0) && defined(MUSB_CONFIG_PROC_FS)
516 extern struct proc_dir_entry *musb_debug_create(char *name,
518 extern void musb_debug_delete(char *name, struct musb *data);
521 static inline struct proc_dir_entry *musb_debug_create(char *name,
526 static inline void musb_debug_delete(char *name, struct musb *data)
531 #endif /* __MUSB_MUSBDEFS_H__ */