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/* $Id: cypress.h,v 1.6 1996/08/29 09:48:09 davem Exp $
* cypress.h: Cypress module specific definitions and defines.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC_CYPRESS_H
#define _SPARC_CYPRESS_H
/* Cypress chips have %psr 'impl' of '0001' and 'vers' of '0001'. */
/* The MMU control register fields on the Sparc Cypress 604/605 MMU's.
*
* ---------------------------------------------------------------
* |implvers| MCA | MCM |MV| MID |BM| C|RSV|MR|CM|CL|CE|RSV|NF|ME|
* ---------------------------------------------------------------
* 31 24 23-22 21-20 19 18-15 14 13 12 11 10 9 8 7-2 1 0
*
* MCA: MultiChip Access -- Used for configuration of multiple
* CY7C604/605 cache units.
* MCM: MultiChip Mask -- Again, for multiple cache unit config.
* MV: MultiChip Valid -- Indicates MCM and MCA have valid settings.
* MID: ModuleID -- Unique processor ID for MBus transactions. (605 only)
* BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
* C: Cacheable -- Indicates whether accesses are cacheable while
* the MMU is off. 0=no 1=yes
* MR: MemoryReflection -- Indicates whether the bus attached to the
* MBus supports memory reflection. 0=no 1=yes (605 only)
* CM: CacheMode -- Indicates whether the cache is operating in write
* through or copy-back mode. 0=write-through 1=copy-back
* CL: CacheLock -- Indicates if the entire cache is locked or not.
* 0=not-locked 1=locked (604 only)
* CE: CacheEnable -- Is the virtual cache on? 0=no 1=yes
* NF: NoFault -- Do faults generate traps? 0=yes 1=no
* ME: MmuEnable -- Is the MMU doing translations? 0=no 1=yes
*/
#define CYPRESS_MCA 0x00c00000
#define CYPRESS_MCM 0x00300000
#define CYPRESS_MVALID 0x00080000
#define CYPRESS_MIDMASK 0x00078000 /* Only on 605 */
#define CYPRESS_BMODE 0x00004000
#define CYPRESS_ACENABLE 0x00002000
#define CYPRESS_MRFLCT 0x00000800 /* Only on 605 */
#define CYPRESS_CMODE 0x00000400
#define CYPRESS_CLOCK 0x00000200 /* Only on 604 */
#define CYPRESS_CENABLE 0x00000100
#define CYPRESS_NFAULT 0x00000002
#define CYPRESS_MENABLE 0x00000001
static inline void cypress_flush_page(unsigned long page)
{
__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
"r" (page), "i" (ASI_M_FLUSH_PAGE));
}
static inline void cypress_flush_segment(unsigned long addr)
{
__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
"r" (addr), "i" (ASI_M_FLUSH_SEG));
}
static inline void cypress_flush_region(unsigned long addr)
{
__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
"r" (addr), "i" (ASI_M_FLUSH_REGION));
}
static inline void cypress_flush_context(void)
{
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
"i" (ASI_M_FLUSH_CTX));
}
/* XXX Displacement flushes for buggy chips and initial testing
* XXX go here.
*/
#endif /* !(_SPARC_CYPRESS_H) */
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