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/* SPDX-License-Identifier: GPL-2.0 */
/*
* turbosparc.h: Defines specific to the TurboSparc module.
* This is SRMMU stuff.
*
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#ifndef _SPARC_TURBOSPARC_H
#define _SPARC_TURBOSPARC_H
#include <asm/asi.h>
#include <asm/pgtsrmmu.h>
/* Bits in the SRMMU control register for TurboSparc modules.
*
* -------------------------------------------------------------------
* |impl-vers| RSV| PMC |PE|PC| RSV |BM| RFR |IC|DC|PSO|RSV|ICS|NF|ME|
* -------------------------------------------------------------------
* 31 24 23-21 20-19 18 17 16-15 14 13-10 9 8 7 6-3 2 1 0
*
* BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
*
* This indicates whether the TurboSparc is in boot-mode or not.
*
* IC: Instruction Cache -- 0 = off, 1 = on
* DC: Data Cache -- 0 = off, 1 = 0n
*
* These bits enable the on-cpu TurboSparc split I/D caches.
*
* ICS: ICache Snooping -- 0 = disable, 1 = enable snooping of icache
* NF: No Fault -- 0 = faults generate traps, 1 = faults don't trap
* ME: MMU enable -- 0 = mmu not translating, 1 = mmu translating
*
*/
#define TURBOSPARC_MMUENABLE 0x00000001
#define TURBOSPARC_NOFAULT 0x00000002
#define TURBOSPARC_ICSNOOP 0x00000004
#define TURBOSPARC_PSO 0x00000080
#define TURBOSPARC_DCENABLE 0x00000100 /* Enable data cache */
#define TURBOSPARC_ICENABLE 0x00000200 /* Enable instruction cache */
#define TURBOSPARC_BMODE 0x00004000
#define TURBOSPARC_PARITYODD 0x00020000 /* Parity odd, if enabled */
#define TURBOSPARC_PCENABLE 0x00040000 /* Enable parity checking */
/* Bits in the CPU configuration register for TurboSparc modules.
*
* -------------------------------------------------------
* |IOClk|SNP|AXClk| RAH | WS | RSV |SBC|WT|uS2|SE|SCC|
* -------------------------------------------------------
* 31 30 29-28 27-26 25-23 22-8 7-6 5 4 3 2-0
*
*/
#define TURBOSPARC_SCENABLE 0x00000008 /* Secondary cache enable */
#define TURBOSPARC_uS2 0x00000010 /* Swift compatibility mode */
#define TURBOSPARC_WTENABLE 0x00000020 /* Write thru for dcache */
#define TURBOSPARC_SNENABLE 0x40000000 /* DVMA snoop enable */
#ifndef __ASSEMBLY__
/* Bits [13:5] select one of 512 instruction cache tags */
static inline void turbosparc_inv_insn_tag(unsigned long addr)
{
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
: /* no outputs */
: "r" (addr), "i" (ASI_M_TXTC_TAG)
: "memory");
}
/* Bits [13:5] select one of 512 data cache tags */
static inline void turbosparc_inv_data_tag(unsigned long addr)
{
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
: /* no outputs */
: "r" (addr), "i" (ASI_M_DATAC_TAG)
: "memory");
}
static inline void turbosparc_flush_icache(void)
{
unsigned long addr;
for (addr = 0; addr < 0x4000; addr += 0x20)
turbosparc_inv_insn_tag(addr);
}
static inline void turbosparc_flush_dcache(void)
{
unsigned long addr;
for (addr = 0; addr < 0x4000; addr += 0x20)
turbosparc_inv_data_tag(addr);
}
static inline void turbosparc_idflash_clear(void)
{
unsigned long addr;
for (addr = 0; addr < 0x4000; addr += 0x20) {
turbosparc_inv_insn_tag(addr);
turbosparc_inv_data_tag(addr);
}
}
static inline void turbosparc_set_ccreg(unsigned long regval)
{
__asm__ __volatile__("sta %0, [%1] %2\n\t"
: /* no outputs */
: "r" (regval), "r" (0x600), "i" (ASI_M_MMUREGS)
: "memory");
}
static inline unsigned long turbosparc_get_ccreg(void)
{
unsigned long regval;
__asm__ __volatile__("lda [%1] %2, %0\n\t"
: "=r" (regval)
: "r" (0x600), "i" (ASI_M_MMUREGS));
return regval;
}
#endif /* !__ASSEMBLY__ */
#endif /* !(_SPARC_TURBOSPARC_H) */
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