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/* SPARC Processor specifics
* taken from the SPARC port of Linux (ptrace.h).
*
* (C) Copyright 2007
* Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_SPARC_PROCESSOR_H
#define __ASM_SPARC_PROCESSOR_H
#include <asm/arch/asi.h>
#ifdef CONFIG_LEON
/* All LEON processors supported */
#include <asm/leon.h>
#else
/* other processors */
#error Unknown SPARC Processor
#endif
#ifndef __ASSEMBLY__
/* flush data cache */
static __inline__ void sparc_dcache_flush_all(void)
{
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_DFLUSH):"memory");
}
/* flush instruction cache */
static __inline__ void sparc_icache_flush_all(void)
{
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_IFLUSH):"memory");
}
/* do a cache miss load */
static __inline__ unsigned long long sparc_load_reg_cachemiss_qword(unsigned
long paddr)
{
unsigned long long retval;
__asm__ __volatile__("ldda [%1] %2, %0\n\t":
"=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
return retval;
}
static __inline__ unsigned long sparc_load_reg_cachemiss(unsigned long paddr)
{
unsigned long retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t":
"=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
return retval;
}
static __inline__ unsigned short sparc_load_reg_cachemiss_word(unsigned long
paddr)
{
unsigned short retval;
__asm__ __volatile__("lduha [%1] %2, %0\n\t":
"=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
return retval;
}
static __inline__ unsigned char sparc_load_reg_cachemiss_byte(unsigned long
paddr)
{
unsigned char retval;
__asm__ __volatile__("lduba [%1] %2, %0\n\t":
"=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
return retval;
}
/* do a physical address bypass write, i.e. for 0x80000000 */
static __inline__ void sparc_store_reg_bypass(unsigned long paddr,
unsigned long value)
{
__asm__ __volatile__("sta %0, [%1] %2\n\t"::"r"(value), "r"(paddr),
"i"(ASI_BYPASS):"memory");
}
static __inline__ unsigned long sparc_load_reg_bypass(unsigned long paddr)
{
unsigned long retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t":
"=r"(retval):"r"(paddr), "i"(ASI_BYPASS));
return retval;
}
/* Macros for bypassing cache when reading */
#define SPARC_NOCACHE_READ_DWORD(address) sparc_load_reg_cachemiss_qword((unsigned int)(address))
#define SPARC_NOCACHE_READ(address) sparc_load_reg_cachemiss((unsigned int)(address))
#define SPARC_NOCACHE_READ_HWORD(address) sparc_load_reg_cachemiss_word((unsigned int)(address))
#define SPARC_NOCACHE_READ_BYTE(address) sparc_load_reg_cachemiss_byte((unsigned int)(address))
#define SPARC_BYPASS_READ(address) sparc_load_reg_bypass((unsigned int)(address))
#define SPARC_BYPASS_WRITE(address,value) sparc_store_reg_bypass((unsigned int)(address),(unsigned int)(value))
#endif
#endif /* __ASM_SPARC_PROCESSOR_H */
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