diff options
Diffstat (limited to 'usr/src/uts/sun4u/sys/machthread.h')
| -rw-r--r-- | usr/src/uts/sun4u/sys/machthread.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/usr/src/uts/sun4u/sys/machthread.h b/usr/src/uts/sun4u/sys/machthread.h new file mode 100644 index 0000000000..4716485fbd --- /dev/null +++ b/usr/src/uts/sun4u/sys/machthread.h @@ -0,0 +1,155 @@ +/* + * 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 */ |