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Diffstat (limited to '')
| -rw-r--r-- | arch/sparc/include/asm/turbosparc.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/turbosparc.h b/arch/sparc/include/asm/turbosparc.h new file mode 100644 index 000000000..23df777f9 --- /dev/null +++ b/arch/sparc/include/asm/turbosparc.h @@ -0,0 +1,126 @@ +/* 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) */ |