turbosparc.h
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- /* $Id: turbosparc.h,v 1.4 1998/08/16 16:02:42 ecd Exp $
- * 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 */
- extern __inline__ void turbosparc_inv_insn_tag(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_TXTC_TAG));
- }
- /* Bits [13:5] select one of 512 data cache tags */
- extern __inline__ void turbosparc_inv_data_tag(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_DATAC_TAG));
- }
- extern __inline__ void turbosparc_flush_icache(void)
- {
- unsigned long addr;
- for(addr = 0; addr < 0x4000; addr += 0x20)
- turbosparc_inv_insn_tag(addr);
- }
- extern __inline__ void turbosparc_flush_dcache(void)
- {
- unsigned long addr;
- for(addr = 0; addr < 0x4000; addr += 0x20)
- turbosparc_inv_data_tag(addr);
- }
- extern __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);
- }
- }
- extern __inline__ void turbosparc_set_ccreg(unsigned long regval)
- {
- __asm__ __volatile__("sta %0, [%1] %2nt" : :
- "r" (regval), "r" (0x600),
- "i" (ASI_M_MMUREGS));
- }
- extern __inline__ unsigned long turbosparc_get_ccreg(void)
- {
- unsigned long regval;
- __asm__ __volatile__("lda [%1] %2, %0nt" :
- "=r" (regval) :
- "r" (0x600),
- "i" (ASI_M_MMUREGS));
- return regval;
- }
- #endif /* !__ASSEMBLY__ */
- #endif /* !(_SPARC_TURBOSPARC_H) */