WebSVN – HelenOS – Blame – /branches/dd/kernel/arch/sparc64/include/mm/tsb.h

Rev	Author	Line No.	Line
1889	jermar	1	/*
2071	jermar	2	* Copyright (c) 2006 Jakub Jermar
1889	jermar	3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	/** @addtogroup sparc64mm
		30	* @{
		31	*/
		32	/** @file
		33	*/
		34
		35	#ifndef KERN_sparc64_TSB_H_
		36	#define KERN_sparc64_TSB_H_
		37
		38	/*
		39	* ITSB abd DTSB will claim 64K of memory, which
		40	* is a nice number considered that it is one of
		41	* the page sizes supported by hardware, which,
		42	* again, is nice because TSBs need to be locked
		43	* in TLBs - only one TLB entry will do.
		44	*/
2048	jermar	45	#define TSB_SIZE 2 /* when changing this, change
		46	* as.c as well */
		47	#define ITSB_ENTRY_COUNT (512 * (1 << TSB_SIZE))
		48	#define DTSB_ENTRY_COUNT (512 * (1 << TSB_SIZE))
1889	jermar	49
1891	jermar	50	#define TSB_TAG_TARGET_CONTEXT_SHIFT 48
		51
		52	#ifndef __ASM__
		53
		54	#include <arch/mm/tte.h>
		55	#include <arch/mm/mmu.h>
		56	#include <arch/types.h>
		57
1890	jermar	58	/** TSB Base register. */
2089	decky	59	typedef union tsb_base_reg {
1890	jermar	60	uint64_t value;
		61	struct {
		62	uint64_t base : 51; /*< TSB base address, bits 63:13. /
2048	jermar	63	unsigned split : 1; /**< Split vs. common TSB for 8K and 64K
		64	* pages. HelenOS uses only 8K pages
		65	* for user mappings, so we always set
		66	* this to 0.
		67	*/
1890	jermar	68	unsigned : 9;
2048	jermar	69	unsigned size : 3; /**< TSB size. Number of entries is
		70	* 512 * 2^size. */
1890	jermar	71	} __attribute__ ((packed));
2089	decky	72	} tsb_base_reg_t;
1890	jermar	73
		74	/** Read ITSB Base register.
		75	*
		76	* @return Content of the ITSB Base register.
		77	*/
		78	static inline uint64_t itsb_base_read(void)
		79	{
		80	return asi_u64_read(ASI_IMMU, VA_IMMU_TSB_BASE);
		81	}
		82
		83	/** Read DTSB Base register.
		84	*
		85	* @return Content of the DTSB Base register.
		86	*/
		87	static inline uint64_t dtsb_base_read(void)
		88	{
		89	return asi_u64_read(ASI_DMMU, VA_DMMU_TSB_BASE);
		90	}
		91
		92	/** Write ITSB Base register.
		93	*
		94	* @param v New content of the ITSB Base register.
		95	*/
		96	static inline void itsb_base_write(uint64_t v)
		97	{
		98	asi_u64_write(ASI_IMMU, VA_IMMU_TSB_BASE, v);
		99	}
		100
		101	/** Write DTSB Base register.
		102	*
		103	* @param v New content of the DTSB Base register.
		104	*/
		105	static inline void dtsb_base_write(uint64_t v)
		106	{
		107	asi_u64_write(ASI_DMMU, VA_DMMU_TSB_BASE, v);
		108	}
		109
4055	trochtova	110	#if defined (US3)
		111
		112	/** Write DTSB Primary Extension register.
		113	*
		114	* @param v New content of the DTSB Primary Extension register.
		115	*/
		116	static inline void dtsb_primary_extension_write(uint64_t v)
		117	{
		118	asi_u64_write(ASI_DMMU, VA_DMMU_PRIMARY_EXTENSION, v);
		119	}
		120
		121	/** Write DTSB Secondary Extension register.
		122	*
		123	* @param v New content of the DTSB Secondary Extension register.
		124	*/
		125	static inline void dtsb_secondary_extension_write(uint64_t v)
		126	{
		127	asi_u64_write(ASI_DMMU, VA_DMMU_SECONDARY_EXTENSION, v);
		128	}
		129
		130	/** Write DTSB Nucleus Extension register.
		131	*
		132	* @param v New content of the DTSB Nucleus Extension register.
		133	*/
		134	static inline void dtsb_nucleus_extension_write(uint64_t v)
		135	{
		136	asi_u64_write(ASI_DMMU, VA_DMMU_NUCLEUS_EXTENSION, v);
		137	}
		138
		139	/** Write ITSB Primary Extension register.
		140	*
		141	* @param v New content of the ITSB Primary Extension register.
		142	*/
		143	static inline void itsb_primary_extension_write(uint64_t v)
		144	{
		145	asi_u64_write(ASI_IMMU, VA_IMMU_PRIMARY_EXTENSION, v);
		146	}
		147
		148	/** Write ITSB Nucleus Extension register.
		149	*
		150	* @param v New content of the ITSB Nucleus Extension register.
		151	*/
		152	static inline void itsb_nucleus_extension_write(uint64_t v)
		153	{
		154	asi_u64_write(ASI_IMMU, VA_IMMU_NUCLEUS_EXTENSION, v);
		155	}
		156
		157	#endif
		158
2106	jermar	159	/* Forward declarations. */
		160	struct as;
		161	struct pte;
1889	jermar	162
2106	jermar	163	extern void tsb_invalidate(struct as *as, uintptr_t page, count_t pages);
2141	jermar	164	extern void itsb_pte_copy(struct pte *t, index_t index);
		165	extern void dtsb_pte_copy(struct pte *t, index_t index, bool ro);
2106	jermar	166
1891	jermar	167	#endif /* !def __ASM__ */
		168
1889	jermar	169	#endif
		170
		171	/** @}
		172	*/

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