mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
192 lines
5.5 KiB
C
192 lines
5.5 KiB
C
/* $Id: ross.h,v 1.13 1998/01/07 06:49:11 baccala Exp $
|
|
* ross.h: Ross module specific definitions and defines.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef _SPARC_ROSS_H
|
|
#define _SPARC_ROSS_H
|
|
|
|
#include <asm/asi.h>
|
|
#include <asm/page.h>
|
|
|
|
/* Ross made Hypersparcs have a %psr 'impl' field of '0001'. The 'vers'
|
|
* field has '1111'.
|
|
*/
|
|
|
|
/* The MMU control register fields on the HyperSparc.
|
|
*
|
|
* -----------------------------------------------------------------
|
|
* |implvers| RSV |CWR|SE|WBE| MID |BM| C|CS|MR|CM|RSV|CE|RSV|NF|ME|
|
|
* -----------------------------------------------------------------
|
|
* 31 24 23-22 21 20 19 18-15 14 13 12 11 10 9 8 7-2 1 0
|
|
*
|
|
* Phew, lots of fields there ;-)
|
|
*
|
|
* CWR: Cache Wrapping Enabled, if one cache wrapping is on.
|
|
* SE: Snoop Enable, turns on bus snooping for cache activity if one.
|
|
* WBE: Write Buffer Enable, one turns it on.
|
|
* MID: The ModuleID of the chip for MBus transactions.
|
|
* BM: Boot-Mode. One indicates the MMU is in boot mode.
|
|
* C: Indicates whether accesses are cachable while the MMU is
|
|
* disabled.
|
|
* CS: Cache Size -- 0 = 128k, 1 = 256k
|
|
* MR: Memory Reflection, one indicates that the memory bus connected
|
|
* to the MBus supports memory reflection.
|
|
* CM: Cache Mode -- 0 = write-through, 1 = copy-back
|
|
* CE: Cache Enable -- 0 = no caching, 1 = cache is on
|
|
* NF: No Fault -- 0 = faults trap the CPU from supervisor mode
|
|
* 1 = faults from supervisor mode do not generate traps
|
|
* ME: MMU Enable -- 0 = MMU is off, 1 = MMU is on
|
|
*/
|
|
|
|
#define HYPERSPARC_CWENABLE 0x00200000
|
|
#define HYPERSPARC_SBENABLE 0x00100000
|
|
#define HYPERSPARC_WBENABLE 0x00080000
|
|
#define HYPERSPARC_MIDMASK 0x00078000
|
|
#define HYPERSPARC_BMODE 0x00004000
|
|
#define HYPERSPARC_ACENABLE 0x00002000
|
|
#define HYPERSPARC_CSIZE 0x00001000
|
|
#define HYPERSPARC_MRFLCT 0x00000800
|
|
#define HYPERSPARC_CMODE 0x00000400
|
|
#define HYPERSPARC_CENABLE 0x00000100
|
|
#define HYPERSPARC_NFAULT 0x00000002
|
|
#define HYPERSPARC_MENABLE 0x00000001
|
|
|
|
|
|
/* The ICCR instruction cache register on the HyperSparc.
|
|
*
|
|
* -----------------------------------------------
|
|
* | | FTD | ICE |
|
|
* -----------------------------------------------
|
|
* 31 1 0
|
|
*
|
|
* This register is accessed using the V8 'wrasr' and 'rdasr'
|
|
* opcodes, since not all assemblers understand them and those
|
|
* that do use different semantics I will just hard code the
|
|
* instruction with a '.word' statement.
|
|
*
|
|
* FTD: If set to one flush instructions executed during an
|
|
* instruction cache hit occurs, the corresponding line
|
|
* for said cache-hit is invalidated. If FTD is zero,
|
|
* an unimplemented 'flush' trap will occur when any
|
|
* flush is executed by the processor.
|
|
*
|
|
* ICE: If set to one, the instruction cache is enabled. If
|
|
* zero, the cache will not be used for instruction fetches.
|
|
*
|
|
* All other bits are read as zeros, and writes to them have no
|
|
* effect.
|
|
*
|
|
* Wheee, not many assemblers understand the %iccr register nor
|
|
* the generic asr r/w instructions.
|
|
*
|
|
* 1000 0011 0100 0111 1100 0000 0000 0000 ! rd %iccr, %g1
|
|
*
|
|
* 0x 8 3 4 7 c 0 0 0 ! 0x8347c000
|
|
*
|
|
* 1011 1111 1000 0000 0110 0000 0000 0000 ! wr %g1, 0x0, %iccr
|
|
*
|
|
* 0x b f 8 0 6 0 0 0 ! 0xbf806000
|
|
*
|
|
*/
|
|
|
|
#define HYPERSPARC_ICCR_FTD 0x00000002
|
|
#define HYPERSPARC_ICCR_ICE 0x00000001
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
static inline unsigned int get_ross_icr(void)
|
|
{
|
|
unsigned int icreg;
|
|
|
|
__asm__ __volatile__(".word 0x8347c000\n\t" /* rd %iccr, %g1 */
|
|
"mov %%g1, %0\n\t"
|
|
: "=r" (icreg)
|
|
: /* no inputs */
|
|
: "g1", "memory");
|
|
|
|
return icreg;
|
|
}
|
|
|
|
static inline void put_ross_icr(unsigned int icreg)
|
|
{
|
|
__asm__ __volatile__("or %%g0, %0, %%g1\n\t"
|
|
".word 0xbf806000\n\t" /* wr %g1, 0x0, %iccr */
|
|
"nop\n\t"
|
|
"nop\n\t"
|
|
"nop\n\t"
|
|
: /* no outputs */
|
|
: "r" (icreg)
|
|
: "g1", "memory");
|
|
|
|
return;
|
|
}
|
|
|
|
/* HyperSparc specific cache flushing. */
|
|
|
|
/* This is for the on-chip instruction cache. */
|
|
static inline void hyper_flush_whole_icache(void)
|
|
{
|
|
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"
|
|
: /* no outputs */
|
|
: "i" (ASI_M_FLUSH_IWHOLE)
|
|
: "memory");
|
|
return;
|
|
}
|
|
|
|
extern int vac_cache_size;
|
|
extern int vac_line_size;
|
|
|
|
static inline void hyper_clear_all_tags(void)
|
|
{
|
|
unsigned long addr;
|
|
|
|
for(addr = 0; addr < vac_cache_size; addr += vac_line_size)
|
|
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
|
|
: /* no outputs */
|
|
: "r" (addr), "i" (ASI_M_DATAC_TAG)
|
|
: "memory");
|
|
}
|
|
|
|
static inline void hyper_flush_unconditional_combined(void)
|
|
{
|
|
unsigned long addr;
|
|
|
|
for (addr = 0; addr < vac_cache_size; addr += vac_line_size)
|
|
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
|
|
: /* no outputs */
|
|
: "r" (addr), "i" (ASI_M_FLUSH_CTX)
|
|
: "memory");
|
|
}
|
|
|
|
static inline void hyper_flush_cache_user(void)
|
|
{
|
|
unsigned long addr;
|
|
|
|
for (addr = 0; addr < vac_cache_size; addr += vac_line_size)
|
|
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
|
|
: /* no outputs */
|
|
: "r" (addr), "i" (ASI_M_FLUSH_USER)
|
|
: "memory");
|
|
}
|
|
|
|
static inline void hyper_flush_cache_page(unsigned long page)
|
|
{
|
|
unsigned long end;
|
|
|
|
page &= PAGE_MASK;
|
|
end = page + PAGE_SIZE;
|
|
while (page < end) {
|
|
__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
|
|
: /* no outputs */
|
|
: "r" (page), "i" (ASI_M_FLUSH_PAGE)
|
|
: "memory");
|
|
page += vac_line_size;
|
|
}
|
|
}
|
|
|
|
#endif /* !(__ASSEMBLY__) */
|
|
|
|
#endif /* !(_SPARC_ROSS_H) */
|