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/***********************license start***********************************
* Copyright (c) 2003-2017 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* This Software, including technical data, may be subject to U.S. export
* control laws, including the U.S. Export Administration Act and its
* associated regulations, and may be subject to export or import
* regulations in other countries.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK
* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
* Functions for accessing memory and CSRs when we are compiling
* natively.
*
* <hr>$Revision: 38306 $<hr>
*/
/**
* Convert a memory pointer (void*) into a hardware compatible
* memory address (uint64_t). Cavium hardware widgets don't
* understand logical addresses.
*
* @param ptr C style memory pointer
* @return Hardware physical address
*/
static inline uint64_t bdk_ptr_to_phys(void *ptr) __attribute__ ((pure, always_inline));
static inline uint64_t bdk_ptr_to_phys(void *ptr)
{
bdk_warn_if(!ptr, "bdk_ptr_to_phys() passed a NULL\n");
return (long)ptr;
}
/**
* Convert a hardware physical address (uint64_t) into a
* memory pointer (void *).
*
* @param physical_address
* Hardware physical address to memory
* @return Pointer to memory
*/
static inline void *bdk_phys_to_ptr(uint64_t physical_address) __attribute__ ((pure, always_inline));
static inline void *bdk_phys_to_ptr(uint64_t physical_address)
{
bdk_warn_if(physical_address==0, "bdk_phys_to_ptr() passed a zero address\n");
return (void*)(long)physical_address;
}
/* We have a full 64bit ABI. Writing to a 64bit address can be done with
a simple volatile pointer */
#define BDK_BUILD_WRITE64(TYPE) \
static inline void bdk_write64_##TYPE(uint64_t addr, TYPE##_t val) __attribute__ ((always_inline)); \
static inline void bdk_write64_##TYPE(uint64_t addr, TYPE##_t val) \
{ \
*(volatile TYPE##_t *)bdk_phys_to_ptr(addr) = val; \
}
/* We have a full 64bit ABI. Writing to a 64bit address can be done with
a simple volatile pointer */
#define BDK_BUILD_READ64(TYPE) \
static inline TYPE##_t bdk_read64_##TYPE(uint64_t addr) __attribute__ ((always_inline)); \
static inline TYPE##_t bdk_read64_##TYPE(uint64_t addr) \
{ \
return *(volatile TYPE##_t *)bdk_phys_to_ptr(addr); \
}
/* The following defines 8 functions for writing to a 64bit address. Each
takes two arguments, the address and the value to write.
bdk_write64_int64 bdk_write64_uint64
bdk_write64_int32 bdk_write64_uint32
bdk_write64_int16 bdk_write64_uint16
bdk_write64_int8 bdk_write64_uint8 */
BDK_BUILD_WRITE64(int64)
BDK_BUILD_WRITE64(int32)
BDK_BUILD_WRITE64(int16)
BDK_BUILD_WRITE64(int8)
BDK_BUILD_WRITE64(uint64)
BDK_BUILD_WRITE64(uint32)
BDK_BUILD_WRITE64(uint16)
BDK_BUILD_WRITE64(uint8)
/* The following defines 8 functions for reading from a 64bit address. Each
takes the address as the only argument
bdk_read64_int64 bdk_read64_uint64
bdk_read64_int32 bdk_read64_uint32
bdk_read64_int16 bdk_read64_uint16
bdk_read64_int8 bdk_read64_uint8 */
BDK_BUILD_READ64(int64)
BDK_BUILD_READ64(int32)
BDK_BUILD_READ64(int16)
BDK_BUILD_READ64(int8)
BDK_BUILD_READ64(uint64)
BDK_BUILD_READ64(uint32)
BDK_BUILD_READ64(uint16)
BDK_BUILD_READ64(uint8)
/**
* Returns the number of bits set in the provided value.
* Simple wrapper for POP instruction.
*
* @param val 32 bit value to count set bits in
*
* @return Number of bits set
*/
static inline uint32_t bdk_pop(uint32_t val)
{
return __builtin_popcount(val);
}
/**
* Returns the number of bits set in the provided value.
* Simple wrapper for DPOP instruction.
*
* @param val 64 bit value to count set bits in
*
* @return Number of bits set
*/
static inline int bdk_dpop(uint64_t val)
{
return __builtin_popcountl(val);
}
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