80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
|
|
* 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) */
|