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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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