HelenOS sources

root/kernel/arch/sparc64/include/arch/sun4u/cpu.h

INCLUDED FROM

DEFINITIONS

1. read_mid

/*
 * Copyright (c) 2005 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 kernel_sparc64
 * @{
 */
/** @file
 */

#ifndef KERN_sparc64_sun4u_CPU_H_
#define KERN_sparc64_sun4u_CPU_H_

#define MANUF_FUJITSU     0x04
#define MANUF_ULTRASPARC  0x17  /**< UltraSPARC I, UltraSPARC II */
#define MANUF_SUN         0x3e

#define IMPL_ULTRASPARCI         0x10
#define IMPL_ULTRASPARCII        0x11
#define IMPL_ULTRASPARCII_I      0x12
#define IMPL_ULTRASPARCII_E      0x13
#define IMPL_ULTRASPARCIII       0x14
#define IMPL_ULTRASPARCIII_PLUS  0x15
#define IMPL_ULTRASPARCIII_I     0x16
#define IMPL_ULTRASPARCIV        0x18
#define IMPL_ULTRASPARCIV_PLUS   0x19

#define IMPL_SPARC64V  0x5

#ifndef __ASSEMBLER__

#include <arch/register.h>
#include <arch/regdef.h>
#include <arch/asm.h>
#include <arch/arch.h>
#include <stdint.h>
#include <trace.h>

typedef struct {
        /** Processor ID as read from UPA_CONFIG/FIREPLANE_CONFIG. */
        uint32_t mid;
        ver_reg_t ver;
        /** Processor frequency in Hz. */
        uint32_t clock_frequency;
        /** Next clock interrupt should be generated when the TICK register
         * matches this value.
         */
        uint64_t next_tick_cmpr;
} cpu_arch_t;

/** Read the module ID (agent ID/CPUID) of the current CPU.
 *
 */
_NO_TRACE static inline uint32_t read_mid(void)
{
        uint64_t icbus_config = asi_u64_read(ASI_ICBUS_CONFIG, 0);
        icbus_config = icbus_config >> ICBUS_CONFIG_MID_SHIFT;

#if defined (US)
        return icbus_config & 0x1f;
#elif defined (US3)
        if (((ver_reg_t) ver_read()).impl == IMPL_ULTRASPARCIII_I)
                return icbus_config & 0x1f;
        else
                return icbus_config & 0x3ff;
#endif
}

#endif

#endif

/** @}
 */