mirror of https://gitee.com/openkylin/linux.git
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
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/*
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* cypress.h: Cypress module specific definitions and defines.
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef _SPARC_CYPRESS_H
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#define _SPARC_CYPRESS_H
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/* Cypress chips have %psr 'impl' of '0001' and 'vers' of '0001'. */
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/* The MMU control register fields on the Sparc Cypress 604/605 MMU's.
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*
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* ---------------------------------------------------------------
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* |implvers| MCA | MCM |MV| MID |BM| C|RSV|MR|CM|CL|CE|RSV|NF|ME|
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* ---------------------------------------------------------------
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* 31 24 23-22 21-20 19 18-15 14 13 12 11 10 9 8 7-2 1 0
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*
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* MCA: MultiChip Access -- Used for configuration of multiple
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* CY7C604/605 cache units.
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* MCM: MultiChip Mask -- Again, for multiple cache unit config.
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* MV: MultiChip Valid -- Indicates MCM and MCA have valid settings.
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* MID: ModuleID -- Unique processor ID for MBus transactions. (605 only)
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* BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
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* C: Cacheable -- Indicates whether accesses are cacheable while
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* the MMU is off. 0=no 1=yes
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* MR: MemoryReflection -- Indicates whether the bus attached to the
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* MBus supports memory reflection. 0=no 1=yes (605 only)
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* CM: CacheMode -- Indicates whether the cache is operating in write
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* through or copy-back mode. 0=write-through 1=copy-back
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* CL: CacheLock -- Indicates if the entire cache is locked or not.
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* 0=not-locked 1=locked (604 only)
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* CE: CacheEnable -- Is the virtual cache on? 0=no 1=yes
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* NF: NoFault -- Do faults generate traps? 0=yes 1=no
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* ME: MmuEnable -- Is the MMU doing translations? 0=no 1=yes
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*/
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#define CYPRESS_MCA 0x00c00000
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#define CYPRESS_MCM 0x00300000
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#define CYPRESS_MVALID 0x00080000
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#define CYPRESS_MIDMASK 0x00078000 /* Only on 605 */
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#define CYPRESS_BMODE 0x00004000
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#define CYPRESS_ACENABLE 0x00002000
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#define CYPRESS_MRFLCT 0x00000800 /* Only on 605 */
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#define CYPRESS_CMODE 0x00000400
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#define CYPRESS_CLOCK 0x00000200 /* Only on 604 */
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#define CYPRESS_CENABLE 0x00000100
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#define CYPRESS_NFAULT 0x00000002
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#define CYPRESS_MENABLE 0x00000001
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static inline void cypress_flush_page(unsigned long page)
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{
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__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
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"r" (page), "i" (ASI_M_FLUSH_PAGE));
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}
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static inline void cypress_flush_segment(unsigned long addr)
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{
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__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
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"r" (addr), "i" (ASI_M_FLUSH_SEG));
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}
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static inline void cypress_flush_region(unsigned long addr)
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{
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__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
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"r" (addr), "i" (ASI_M_FLUSH_REGION));
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}
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static inline void cypress_flush_context(void)
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{
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__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
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"i" (ASI_M_FLUSH_CTX));
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}
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/* XXX Displacement flushes for buggy chips and initial testing
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* XXX go here.
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*/
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#endif /* !(_SPARC_CYPRESS_H) */
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