target/linux/ramips/files-3.7/drivers/usb/dwc_otg/linux/dwc_otg_plat.h

   1 /* ==========================================================================
   2  * $File: //dwh/usb_iip/dev/software/otg/linux/platform/dwc_otg_plat.h $
   3  * $Revision: 1.2 $
   4  * $Date: 2008-11-21 05:39:16 $
   5  * $Change: 1064915 $
   6  *
   7  * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
   8  * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
   9  * otherwise expressly agreed to in writing between Synopsys and you.
  10  *
  11  * The Software IS NOT an item of Licensed Software or Licensed Product under
  12  * any End User Software License Agreement or Agreement for Licensed Product
  13  * with Synopsys or any supplement thereto. You are permitted to use and
  14  * redistribute this Software in source and binary forms, with or without
  15  * modification, provided that redistributions of source code must retain this
  16  * notice. You may not view, use, disclose, copy or distribute this file or
  17  * any information contained herein except pursuant to this license grant from
  18  * Synopsys. If you do not agree with this notice, including the disclaimer
  19  * below, then you are not authorized to use the Software.
  20  *
  21  * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
  25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  31  * DAMAGE.
  32  * ========================================================================== */
  33
  34 #if !defined(__DWC_OTG_PLAT_H__)
  35 #define __DWC_OTG_PLAT_H__
  36
  37 #include <linux/types.h>
  38 #include <linux/slab.h>
  39 #include <linux/list.h>
  40 #include <linux/delay.h>
  41 #include <asm/io.h>
  42
  43 /**
  44  * @file
  45  *
  46  * This file contains the Platform Specific constants, interfaces
  47  * (functions and macros) for Linux.
  48  *
  49  */
  50 //#if !defined(__LINUX_ARM_ARCH__)
  51 //#error "The contents of this file is Linux specific!!!"
  52 //#endif
  53
  54 /**
  55  * Reads the content of a register.
  56  *
  57  * @param reg address of register to read.
  58  * @return contents of the register.
  59  *
  60
  61  * Usage:<br>
  62  * <code>uint32_t dev_ctl = dwc_read_reg32(&dev_regs->dctl);</code>
  63  */
  64 static __inline__ uint32_t dwc_read_reg32( volatile uint32_t *reg)
  65 {
  66         return readl(reg);
  67 };
  68
  69 /**
  70  * Writes a register with a 32 bit value.
  71  *
  72  * @param reg address of register to read.
  73  * @param value to write to _reg.
  74  *
  75  * Usage:<br>
  76  * <code>dwc_write_reg32(&dev_regs->dctl, 0); </code>
  77  */
  78 static __inline__ void dwc_write_reg32( volatile uint32_t *reg, const uint32_t value)
  79 {
  80         writel( value, reg );
  81 };
  82
  83 /**
  84  * This function modifies bit values in a register.  Using the
  85  * algorithm: (reg_contents & ~clear_mask) | set_mask.
  86  *
  87  * @param reg address of register to read.
  88  * @param clear_mask bit mask to be cleared.
  89  * @param set_mask bit mask to be set.
  90  *
  91  * Usage:<br>
  92  * <code> // Clear the SOF Interrupt Mask bit and <br>
  93  * // set the OTG Interrupt mask bit, leaving all others as they were.
  94  *    dwc_modify_reg32(&dev_regs->gintmsk, DWC_SOF_INT, DWC_OTG_INT);</code>
  95  */
  96 static __inline__
  97  void dwc_modify_reg32( volatile uint32_t *reg, const uint32_t clear_mask, const uint32_t set_mask)
  98 {
  99         writel( (readl(reg) & ~clear_mask) | set_mask, reg );
 100 };
 101
 102
 103 /**
 104  * Wrapper for the OS micro-second delay function.
 105  * @param[in] usecs Microseconds of delay
 106  */
 107 static __inline__ void UDELAY( const uint32_t usecs )
 108 {
 109         udelay( usecs );
 110 }
 111
 112 /**
 113  * Wrapper for the OS milli-second delay function.
 114  * @param[in] msecs milliseconds of delay
 115  */
 116 static __inline__ void MDELAY( const uint32_t msecs )
 117 {
 118         mdelay( msecs );
 119 }
 120
 121 /**
 122  * Wrapper for the Linux spin_lock.  On the ARM (Integrator)
 123  * spin_lock() is a nop.
 124  *
 125  * @param lock Pointer to the spinlock.
 126  */
 127 static __inline__ void SPIN_LOCK( spinlock_t *lock )
 128 {
 129         spin_lock(lock);
 130 }
 131
 132 /**
 133  * Wrapper for the Linux spin_unlock.  On the ARM (Integrator)
 134  * spin_lock() is a nop.
 135  *
 136  * @param lock Pointer to the spinlock.
 137  */
 138 static __inline__ void SPIN_UNLOCK( spinlock_t *lock )
 139 {
 140         spin_unlock(lock);
 141 }
 142
 143 /**
 144  * Wrapper (macro) for the Linux spin_lock_irqsave.  On the ARM
 145  * (Integrator) spin_lock() is a nop.
 146  *
 147  * @param l Pointer to the spinlock.
 148  * @param f unsigned long for irq flags storage.
 149  */
 150 #define SPIN_LOCK_IRQSAVE( l, f )  spin_lock_irqsave(l,f);
 151
 152 /**
 153  * Wrapper (macro) for the Linux spin_unlock_irqrestore.  On the ARM
 154  * (Integrator) spin_lock() is a nop.
 155  *
 156  * @param l Pointer to the spinlock.
 157  * @param f unsigned long for irq flags storage.
 158  */
 159 #define SPIN_UNLOCK_IRQRESTORE( l,f ) spin_unlock_irqrestore(l,f);
 160
 161 /*
 162  * Debugging support vanishes in non-debug builds.
 163  */
 164
 165
 166 /**
 167  * The Debug Level bit-mask variable.
 168  */
 169 extern uint32_t g_dbg_lvl;
 170 /**
 171  * Set the Debug Level variable.
 172  */
 173 static inline uint32_t SET_DEBUG_LEVEL( const uint32_t new )
 174 {
 175         uint32_t old = g_dbg_lvl;
 176         g_dbg_lvl = new;
 177         return old;
 178 }
 179
 180 /** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
 181 #define DBG_CIL         (0x2)
 182 /** When debug level has the DBG_CILV bit set, display CIL Verbose debug
 183  * messages */
 184 #define DBG_CILV        (0x20)
 185 /**  When debug level has the DBG_PCD bit set, display PCD (Device) debug
 186  *  messages */
 187 #define DBG_PCD         (0x4)
 188 /** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
 189  * messages */
 190 #define DBG_PCDV        (0x40)
 191 /** When debug level has the DBG_HCD bit set, display Host debug messages */
 192 #define DBG_HCD         (0x8)
 193 /** When debug level has the DBG_HCDV bit set, display Verbose Host debug
 194  * messages */
 195 #define DBG_HCDV        (0x80)
 196 /** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
 197  *  mode. */
 198 #define DBG_HCD_URB     (0x800)
 199
 200 /** When debug level has any bit set, display debug messages */
 201 #define DBG_ANY         (0xFF)
 202
 203 /** All debug messages off */
 204 #define DBG_OFF         0
 205
 206 /** Prefix string for DWC_DEBUG print macros. */
 207 #define USB_DWC "dwc_otg: "
 208
 209 /**
 210  * Print a debug message when the Global debug level variable contains
 211  * the bit defined in <code>lvl</code>.
 212  *
 213  * @param[in] lvl - Debug level, use one of the DBG_ constants above.
 214  * @param[in] x - like printf
 215  *
 216  *    Example:<p>
 217  * <code>
 218  *      DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
 219  * </code>
 220  * <br>
 221  * results in:<br>
 222  * <code>
 223  * usb-DWC_otg: dwc_otg_cil_init(ca867000)
 224  * </code>
 225  */
 226 #ifdef DEBUG
 227
 228 # define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)printk( KERN_DEBUG USB_DWC x ); }while(0)
 229 # define DWC_DEBUGP(x...)       DWC_DEBUGPL(DBG_ANY, x )
 230
 231 # define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
 232
 233 #else
 234
 235 # define DWC_DEBUGPL(lvl, x...) do{}while(0)
 236 # define DWC_DEBUGP(x...)
 237
 238 # define CHK_DEBUG_LEVEL(level) (0)
 239
 240 #endif /*DEBUG*/
 241
 242 /**
 243  * Print an Error message.
 244  */
 245 #define DWC_ERROR(x...) printk( KERN_ERR USB_DWC x )
 246 /**
 247  * Print a Warning message.
 248  */
 249 #define DWC_WARN(x...) printk( KERN_WARNING USB_DWC x )
 250 /**
 251  * Print a notice (normal but significant message).
 252  */
 253 #define DWC_NOTICE(x...) printk( KERN_NOTICE USB_DWC x )
 254 /**
 255  *  Basic message printing.
 256  */
 257 #define DWC_PRINT(x...) printk( KERN_INFO USB_DWC x )
 258
 259 #endif
 260