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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MACHTHREAD_H
#define _SYS_MACHTHREAD_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/asi.h>
#include <sys/sun4asi.h>
#include <sys/machasi.h>
#include <sys/bitmap.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _ASM
#define THREAD_REG %g7 /* pointer to current thread data */
/*
* Get the processor implementation from the version register.
*/
#define GET_CPU_IMPL(out) \
rdpr %ver, out; \
srlx out, 32, out; \
sll out, 16, out; \
srl out, 16, out;
#ifdef _STARFIRE
/*
* CPU_INDEX(r, scr)
* Returns cpu id in r.
* On Starfire, this is read from the Port Controller's Port ID
* register in local space.
*
* Need to load the 64 bit address of the PC's PortID reg
* using only one register. Kludge the 41 bits address constant to
* be 32bits by shifting it 12 bits to the right first.
*/
#define LOCAL_PC_PORTID_ADDR_SRL12 0x1FFF4000
#define PC_PORT_ID 0xD0
#define CPU_INDEX(r, scr) \
rdpr %pstate, scr; \
andn scr, PSTATE_IE | PSTATE_AM, r; \
wrpr r, 0, %pstate; \
set LOCAL_PC_PORTID_ADDR_SRL12, r; \
sllx r, 12, r; \
or r, PC_PORT_ID, r; \
lduwa [r]ASI_IO, r; \
wrpr scr, 0, %pstate
#else /* _STARFIRE */
/*
* UPA supports up to 32 devices while Safari supports up to
* 1024 devices (utilizing the SSM protocol). Based upon the
* value of NCPU, a 5- or 10-bit mask will be needed for
* extracting the cpu id.
*/
#if NCPU > 32
#define CPU_MASK 0x3ff
#else
#define CPU_MASK 0x1f
#endif /* NCPU > 32 */
/*
* CPU_INDEX(r, scr)
* Returns cpu id in r.
* For UPA based systems, the cpu id corresponds to the mid field in
* the UPA config register. For Safari based machines, the cpu id
* corresponds to the aid field in the Safari config register.
*
* XXX - scr reg is not used here.
*/
#define CPU_INDEX(r, scr) \
ldxa [%g0]ASI_UPA_CONFIG, r; \
srlx r, 17, r; \
and r, CPU_MASK, r
#endif /* _STARFIRE */
/*
* Given a cpu id extract the appropriate word
* in the cpuset mask for this cpu id.
*/
#if CPUSET_SIZE > CLONGSIZE
#define CPU_INDEXTOSET(base, index, scr) \
srl index, BT_ULSHIFT, scr; \
and index, BT_ULMASK, index; \
sll scr, CLONGSHIFT, scr; \
add base, scr, base
#else
#define CPU_INDEXTOSET(base, index, scr)
#endif /* CPUSET_SIZE */
/*
* Assembly macro to find address of the current CPU.
* Used when coming in from a user trap - cannot use THREAD_REG.
* Args are destination register and one scratch register.
*/
#define CPU_ADDR(reg, scr) \
.global cpu; \
CPU_INDEX(scr, reg); \
sll scr, CPTRSHIFT, scr; \
set cpu, reg; \
ldn [reg + scr], reg
#define CINT64SHIFT 3
/*
* Assembly macro to find the physical address of the current CPU.
* All memory references using VA must be limited to nucleus
* memory to avoid any MMU side effect.
*/
#define CPU_PADDR(reg, scr) \
.global cpu_pa; \
CPU_INDEX(scr, reg); \
sll scr, CINT64SHIFT, scr; \
set cpu_pa, reg; \
ldx [reg + scr], reg
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MACHTHREAD_H */
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