/*
* Copyright (c) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup sparc64mm
* @{
*/
/** @file
*/
#ifndef KERN_sparc64_TSB_H_
#define KERN_sparc64_TSB_H_
/*
* ITSB abd DTSB will claim 64K of memory, which
* is a nice number considered that it is one of
* the page sizes supported by hardware, which,
* again, is nice because TSBs need to be locked
* in TLBs - only one TLB entry will do.
*/
#define TSB_SIZE 2 /* when changing this, change
* as.c as well */
#define ITSB_ENTRY_COUNT (512 * (1 << TSB_SIZE))
#define DTSB_ENTRY_COUNT (512 * (1 << TSB_SIZE))
#define TSB_TAG_TARGET_CONTEXT_SHIFT 48
#ifndef __ASM__
#include <arch/mm/tte.h>
#include <arch/mm/mmu.h>
#include <arch/types.h>
/** TSB Base register. */
typedef union tsb_base_reg {
uint64_t value;
struct {
uint64_t base : 51; /**< TSB base address, bits 63:13. */
unsigned split : 1; /**< Split vs. common TSB for 8K and 64K
* pages. HelenOS uses only 8K pages
* for user mappings, so we always set
* this to 0.
*/
unsigned : 9;
unsigned size : 3; /**< TSB size. Number of entries is
* 512 * 2^size. */
} __attribute__ ((packed));
} tsb_base_reg_t;
/** Read ITSB Base register.
*
* @return Content of the ITSB Base register.
*/
static inline uint64_t itsb_base_read(void)
{
return asi_u64_read(ASI_IMMU, VA_IMMU_TSB_BASE);
}
/** Read DTSB Base register.
*
* @return Content of the DTSB Base register.
*/
static inline uint64_t dtsb_base_read(void)
{
return asi_u64_read(ASI_DMMU, VA_DMMU_TSB_BASE);
}
/** Write ITSB Base register.
*
* @param v New content of the ITSB Base register.
*/
static inline void itsb_base_write(uint64_t v)
{
asi_u64_write(ASI_IMMU, VA_IMMU_TSB_BASE, v);
}
/** Write DTSB Base register.
*
* @param v New content of the DTSB Base register.
*/
static inline void dtsb_base_write(uint64_t v)
{
asi_u64_write(ASI_DMMU, VA_DMMU_TSB_BASE, v);
}
#if defined (US3)
/** Write DTSB Primary Extension register.
*
* @param v New content of the DTSB Primary Extension register.
*/
static inline void dtsb_primary_extension_write(uint64_t v)
{
asi_u64_write(ASI_DMMU, VA_DMMU_PRIMARY_EXTENSION, v);
}
/** Write DTSB Secondary Extension register.
*
* @param v New content of the DTSB Secondary Extension register.
*/
static inline void dtsb_secondary_extension_write(uint64_t v)
{
asi_u64_write(ASI_DMMU, VA_DMMU_SECONDARY_EXTENSION, v);
}
/** Write DTSB Nucleus Extension register.
*
* @param v New content of the DTSB Nucleus Extension register.
*/
static inline void dtsb_nucleus_extension_write(uint64_t v)
{
asi_u64_write(ASI_DMMU, VA_DMMU_NUCLEUS_EXTENSION, v);
}
/** Write ITSB Primary Extension register.
*
* @param v New content of the ITSB Primary Extension register.
*/
static inline void itsb_primary_extension_write(uint64_t v)
{
asi_u64_write(ASI_IMMU, VA_IMMU_PRIMARY_EXTENSION, v);
}
/** Write ITSB Nucleus Extension register.
*
* @param v New content of the ITSB Nucleus Extension register.
*/
static inline void itsb_nucleus_extension_write(uint64_t v)
{
asi_u64_write(ASI_IMMU, VA_IMMU_NUCLEUS_EXTENSION, v);
}
#endif
/* Forward declarations. */
struct as;
struct pte;
extern void tsb_invalidate(struct as *as, uintptr_t page, count_t pages);
extern void itsb_pte_copy(struct pte *t, index_t index);
extern void dtsb_pte_copy(struct pte *t, index_t index, bool ro);
#endif /* !def __ASM__ */
#endif
/** @}
*/