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 defined(CONFIG_ARCH_OMAP3430)
211 /* REVISIT indexed access seemed to
212 * misbehave (on DaVinci) for at least peripheral IN ...
214 #define MUSB_FLAT_REG
217 /* TUSB mapping: "flat" plus ep0 special cases */
218 #if defined(CONFIG_USB_TUSB6010)
219 #define MGC_SelectEnd(_pBase, _bEnd) \
220 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
221 #define MGC_END_OFFSET MGC_TUSB_OFFSET
223 /* "flat" mapping: each endpoint has its own i/o address */
224 #elif defined(MUSB_FLAT_REG)
225 #define MGC_SelectEnd(_pBase, _bEnd) (((void)(_pBase)),((void)(_bEnd)))
226 #define MGC_END_OFFSET MGC_FLAT_OFFSET
228 /* "indexed" mapping: INDEX register controls register bank select */
230 #define MGC_SelectEnd(_pBase, _bEnd) \
231 musb_writeb((_pBase), MGC_O_HDRC_INDEX, (_bEnd))
232 #define MGC_END_OFFSET MGC_INDEXED_OFFSET
235 /****************************** FUNCTIONS ********************************/
237 #define MUSB_HST_MODE(_pthis)\
238 { (_pthis)->bIsHost=TRUE; }
239 #define MUSB_DEV_MODE(_pthis) \
240 { (_pthis)->bIsHost=FALSE; }
242 #define test_devctl_hst_mode(_x) \
243 (musb_readb((_x)->pRegs, MGC_O_HDRC_DEVCTL)&MGC_M_DEVCTL_HM)
245 #define MUSB_MODE(musb) ((musb)->bIsHost ? "Host" : "Peripheral")
247 /************************** Ep Configuration ********************************/
249 /** The End point descriptor */
250 struct MUSB_EpFifoDescriptor {
251 u8 bType; /* 0 for autoconfig, CNTR, ISOC, BULK, INTR */
252 u8 bDir; /* 0 for autoconfig, INOUT, IN, OUT */
253 int wSize; /* 0 for autoconfig, or the size */
256 #define MUSB_EPD_AUTOCONFIG 0
258 #define MUSB_EPD_T_CNTRL 1
259 #define MUSB_EPD_T_ISOC 2
260 #define MUSB_EPD_T_BULK 3
261 #define MUSB_EPD_T_INTR 4
263 #define MUSB_EPD_D_INOUT 0
264 #define MUSB_EPD_D_TX 1
265 #define MUSB_EPD_D_RX 2
267 /******************************** TYPES *************************************/
270 * struct musb_hw_ep - endpoint hardware (bidirectional)
272 * Ordered slightly for better cacheline locality.
279 #ifdef CONFIG_USB_TUSB6010
283 /* index in musb->aLocalEnd[] */
286 /* hardware configuration, possibly dynamic */
288 u8 tx_double_buffered;
289 u8 rx_double_buffered;
290 u16 wMaxPacketSizeTx;
291 u16 wMaxPacketSizeRx;
293 struct dma_channel *tx_channel;
294 struct dma_channel *rx_channel;
296 #ifdef CONFIG_USB_TUSB6010
297 /* TUSB has "asynchronous" and "synchronous" dma modes */
298 dma_addr_t fifo_async;
299 dma_addr_t fifo_sync;
300 void __iomem *fifo_sync_va;
303 #ifdef CONFIG_USB_MUSB_HDRC_HCD
304 void __iomem *target_regs;
306 /* currently scheduled peripheral endpoint */
307 struct musb_qh *in_qh;
308 struct musb_qh *out_qh;
314 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
315 /* peripheral side */
316 struct musb_ep ep_in; /* TX */
317 struct musb_ep ep_out; /* RX */
321 static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
323 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
324 return next_request(&hw_ep->ep_in);
330 static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
332 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
333 return next_request(&hw_ep->ep_out);
340 * struct musb - Driver instance data.
345 irqreturn_t (*isr)(int, void *);
346 struct work_struct irq_work;
348 #ifdef CONFIG_USB_MUSB_HDRC_HCD
350 /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
351 #define MUSB_PORT_STAT_RESUME (1 << 31)
354 unsigned long rh_timer;
356 enum musb_h_ep0_state bEnd0Stage;
358 /* bulk traffic normally dedicates endpoint hardware, and each
359 * direction has its own ring of host side endpoints.
360 * we try to progress the transfer at the head of each endpoint's
361 * queue until it completes or NAKs too much; then we try the next
364 struct musb_hw_ep *bulk_ep;
366 struct list_head control; /* of musb_qh */
367 struct list_head in_bulk; /* of musb_qh */
368 struct list_head out_bulk; /* of musb_qh */
369 struct musb_qh *periodic[32]; /* tree of interrupt+iso */
372 /* called with IRQs blocked; ON/nonzero implies starting a session,
373 * and waiting at least a_wait_vrise_tmout.
375 void (*board_set_vbus)(struct musb *, int is_on);
377 struct dma_controller *pDmaController;
379 struct device *controller;
380 void __iomem *ctrl_base;
383 #ifdef CONFIG_USB_TUSB6010
386 void __iomem *sync_va;
389 /* passed down from chip/board specific irq handlers */
394 struct otg_transceiver xceiv;
398 struct musb_hw_ep aLocalEnd[MUSB_C_NUM_EPS];
399 #define control_ep aLocalEnd
401 #define VBUSERR_RETRY_COUNT 3
406 u8 board_mode; /* enum musb_mode */
407 int (*board_set_power)(int state);
409 int (*set_clock)(struct clk *clk, int is_active);
411 u8 min_power; /* vbus for periph, in mA/2 */
413 /* active means connected and not suspended */
414 unsigned is_active:1;
416 unsigned bIsMultipoint:1;
418 unsigned bIgnoreDisconnect:1; /* during bus resets */
421 unsigned bBulkSplit:1;
422 #define can_bulk_split(musb,type) \
423 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkSplit)
425 #define can_bulk_split(musb,type) 0
429 unsigned bBulkCombine:1;
430 /* REVISIT allegedly doesn't work reliably */
432 #define can_bulk_combine(musb,type) \
433 (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bBulkCombine)
435 #define can_bulk_combine(musb,type) 0
438 #define can_bulk_combine(musb,type) 0
441 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
442 /* is_suspended means USB B_PERIPHERAL suspend */
443 unsigned is_suspended:1;
445 /* may_wakeup means remote wakeup is enabled */
446 unsigned may_wakeup:1;
448 /* is_self_powered is reported in device status and the
449 * config descriptor. is_bus_powered means B_PERIPHERAL
450 * draws some VBUS current; both can be true.
452 unsigned is_self_powered:1;
453 unsigned is_bus_powered:1;
455 unsigned bSetAddress:1;
456 unsigned bTestMode:1;
457 unsigned softconnect:1;
459 enum musb_g_ep0_state ep0_state;
462 u16 ackpend; /* ep0 */
463 struct usb_gadget g; /* the gadget */
464 struct usb_gadget_driver *pGadgetDriver; /* its driver */
467 #ifdef CONFIG_USB_MUSB_OTG
468 /* FIXME this can't be OTG-specific ... ? */
469 u8 bDelayPortPowerOff;
472 #ifdef MUSB_CONFIG_PROC_FS
473 struct proc_dir_entry *pProcEntry;
477 static inline void musb_set_vbus(struct musb *musb, int is_on)
479 musb->board_set_vbus(musb, is_on);
482 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
483 static inline struct musb *gadget_to_musb(struct usb_gadget *g)
485 return container_of(g, struct musb, g);
490 /***************************** Glue it together *****************************/
492 extern const char musb_driver_name[];
494 extern void musb_start(struct musb *pThis);
495 extern void musb_stop(struct musb *pThis);
497 extern void musb_write_fifo(struct musb_hw_ep *ep,
498 u16 wCount, const u8 * pSource);
499 extern void musb_read_fifo(struct musb_hw_ep *ep,
500 u16 wCount, u8 * pDest);
502 extern void musb_load_testpacket(struct musb *);
504 extern irqreturn_t musb_interrupt(struct musb *);
506 extern void musb_platform_enable(struct musb *musb);
507 extern void musb_platform_disable(struct musb *musb);
509 #ifdef CONFIG_USB_TUSB6010
510 extern void musb_platform_try_idle(struct musb *musb);
511 extern int musb_platform_get_vbus_status(struct musb *musb);
512 extern void musb_platform_set_mode(struct musb *musb, u8 musb_mode);
514 #define musb_platform_try_idle(x) do {} while (0)
515 #define musb_platform_get_vbus_status(x) 0
516 #define musb_platform_set_mode(x, y) do {} while (0)
519 extern int __init musb_platform_init(struct musb *musb);
520 extern int musb_platform_exit(struct musb *musb);
522 /*-------------------------- ProcFS definitions ---------------------*/
524 struct proc_dir_entry;
526 #if (MUSB_DEBUG > 0) && defined(MUSB_CONFIG_PROC_FS)
527 extern struct proc_dir_entry *musb_debug_create(char *name,
529 extern void musb_debug_delete(char *name, struct musb *data);
532 static inline struct proc_dir_entry *musb_debug_create(char *name,
537 static inline void musb_debug_delete(char *name, struct musb *data)
542 #endif /* __MUSB_MUSBDEFS_H__ */