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/*****************************************************************************
* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available at
* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a
* license other than the GPL, without Broadcom's express prior written
* consent.
*****************************************************************************/
/****************************************************************************/
/**
* @file reg.h
*
* @brief Generic register definitions used in CSP
*/
/****************************************************************************/
#ifndef CSP_REG_H
#define CSP_REG_H
/* ---- Include Files ---------------------------------------------------- */
#include <csp/stdint.h>
/* ---- Public Constants and Types --------------------------------------- */
#define __REG32(x) (*((volatile uint32_t *)(x)))
#define __REG16(x) (*((volatile uint16_t *)(x)))
#define __REG8(x) (*((volatile uint8_t *) (x)))
/* Macros used to define a sequence of reserved registers. The start / end */
/* are byte offsets in the particular register definition, with the "end" */
/* being the offset of the next un-reserved register. E.g. if offsets */
/* 0x10 through to 0x1f are reserved, then this reserved area could be */
/* specified as follows. */
/* typedef struct */
/* { */
/* uint32_t reg1; offset 0x00 */
/* uint32_t reg2; offset 0x04 */
/* uint32_t reg3; offset 0x08 */
/* uint32_t reg4; offset 0x0c */
/* REG32_RSVD(0x10, 0x20); */
/* uint32_t reg5; offset 0x20 */
/* ... */
/* } EXAMPLE_REG_t; */
#define REG8_RSVD(start, end) uint8_t rsvd_##start[(end - start) / sizeof(uint8_t)]
#define REG16_RSVD(start, end) uint16_t rsvd_##start[(end - start) / sizeof(uint16_t)]
#define REG32_RSVD(start, end) uint32_t rsvd_##start[(end - start) / sizeof(uint32_t)]
/* ---- Public Variable Externs ------------------------------------------ */
/* ---- Public Function Prototypes --------------------------------------- */
/* Note: When protecting multiple statements, the REG_LOCAL_IRQ_SAVE and */
/* REG_LOCAL_IRQ_RESTORE must be enclosed in { } to allow the */
/* flags variable to be declared locally. */
/* e.g. */
/* statement1; */
/* { */
/* REG_LOCAL_IRQ_SAVE; */
/* <multiple statements here> */
/* REG_LOCAL_IRQ_RESTORE; */
/* } */
/* statement2; */
/* */
#if defined(__KERNEL__) && !defined(STANDALONE)
#include <mach/hardware.h>
#include <linux/interrupt.h>
#define REG_LOCAL_IRQ_SAVE HW_DECLARE_SPINLOCK(reg32) \
unsigned long flags; HW_IRQ_SAVE(reg32, flags)
#define REG_LOCAL_IRQ_RESTORE HW_IRQ_RESTORE(reg32, flags)
#else
#define REG_LOCAL_IRQ_SAVE
#define REG_LOCAL_IRQ_RESTORE
#endif
static inline void reg32_modify_and(volatile uint32_t *reg, uint32_t value)
{
REG_LOCAL_IRQ_SAVE;
*reg &= value;
REG_LOCAL_IRQ_RESTORE;
}
static inline void reg32_modify_or(volatile uint32_t *reg, uint32_t value)
{
REG_LOCAL_IRQ_SAVE;
*reg |= value;
REG_LOCAL_IRQ_RESTORE;
}
static inline void reg32_modify_mask(volatile uint32_t *reg, uint32_t mask,
uint32_t value)
{
REG_LOCAL_IRQ_SAVE;
*reg = (*reg & mask) | value;
REG_LOCAL_IRQ_RESTORE;
}
static inline void reg32_write(volatile uint32_t *reg, uint32_t value)
{
*reg = value;
}
#endif /* CSP_REG_H */
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