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#-
# Copyright (c) 2009 Nathan Whitehorn
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
#
# $FreeBSD$
#
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <sys/smp.h>
#include <machine/platform.h>
#include <machine/platformvar.h>
#include <machine/smp.h>
#include <machine/vmparam.h>
/**
* @defgroup PLATFORM platform - KObj methods for PowerPC platform
* implementations
* @brief A set of methods required by all platform implementations.
* These are used to bring up secondary CPUs, supply the physical memory
* map, etc.
*@{
*/
INTERFACE platform;
#
# Default implementations
#
CODE {
static void platform_null_attach(platform_t plat)
{
return;
}
static int platform_null_smp_first_cpu(platform_t plat,
struct cpuref *cpuref)
{
cpuref->cr_hwref = -1;
cpuref->cr_cpuid = 0;
return (0);
}
static int platform_null_smp_next_cpu(platform_t plat,
struct cpuref *_cpuref)
{
return (ENOENT);
}
static struct cpu_group *platform_null_smp_topo(platform_t plat)
{
#ifdef SMP
return (smp_topo_none());
#else
return (NULL);
#endif
}
static vm_offset_t platform_null_real_maxaddr(platform_t plat)
{
return (VM_MAX_ADDRESS);
}
static void platform_null_smp_ap_init(platform_t plat)
{
return;
}
static void platform_null_idle(platform_t plat, int cpu)
{
return;
}
static int platform_null_idle_wakeup(platform_t plat, int cpu)
{
return (0);
}
};
/**
* @brief Probe for whether we are on this platform, returning the standard
* newbus probe codes. If we have Open Firmware or a flattened device tree,
* it is guaranteed to be available at this point.
*/
METHOD int probe {
platform_t _plat;
};
/**
* @brief Attach this platform module. This happens before the MMU is online,
* so the platform module can install its own high-priority MMU module at
* this point.
*/
METHOD int attach {
platform_t _plat;
} DEFAULT platform_null_attach;
/**
* @brief Return the system's physical memory map.
*
* It shall provide the total and the available regions of RAM.
* The available regions need not take the kernel into account.
*
* @param _memp Array of physical memory chunks
* @param _memsz Number of physical memory chunks
* @param _availp Array of available physical memory chunks
* @param _availsz Number of available physical memory chunks
*/
METHOD void mem_regions {
platform_t _plat;
struct mem_region *_memp;
int *_memsz;
struct mem_region *_availp;
int *_availsz;
};
/**
* @brief Return the maximum address accessible in real mode
* (for use with hypervisors)
*/
METHOD vm_offset_t real_maxaddr {
platform_t _plat;
} DEFAULT platform_null_real_maxaddr;
/**
* @brief Get the CPU's timebase frequency, in ticks per second.
*
* @param _cpu CPU whose timebase to query
*/
METHOD u_long timebase_freq {
platform_t _plat;
struct cpuref *_cpu;
};
# SMP bits
/**
* @brief Fill the first CPU's cpuref
*
* @param _cpuref CPU
*/
METHOD int smp_first_cpu {
platform_t _plat;
struct cpuref *_cpuref;
} DEFAULT platform_null_smp_first_cpu;
/**
* @brief Fill the next CPU's cpuref
*
* @param _cpuref CPU
*/
METHOD int smp_next_cpu {
platform_t _plat;
struct cpuref *_cpuref;
} DEFAULT platform_null_smp_next_cpu;
/**
* @brief Find the boot processor
*
* @param _cpuref CPU
*/
METHOD int smp_get_bsp {
platform_t _plat;
struct cpuref *_cpuref;
} DEFAULT platform_null_smp_first_cpu;
/**
* @brief Start a CPU
*
* @param _cpuref CPU
*/
METHOD int smp_start_cpu {
platform_t _plat;
struct pcpu *_cpu;
};
/**
* @brief Start a CPU
*
*/
METHOD void smp_ap_init {
platform_t _plat;
} DEFAULT platform_null_smp_ap_init;
/**
* @brief Return SMP topology
*/
METHOD cpu_group_t smp_topo {
platform_t _plat;
} DEFAULT platform_null_smp_topo;
/**
* @brief Reset system
*/
METHOD void reset {
platform_t _plat;
};
/**
* @brief Idle a CPU
*/
METHOD void idle {
platform_t _plat;
int _cpu;
} DEFAULT platform_null_idle;
/**
* @brief Wake up an idle CPU
*/
METHOD int idle_wakeup {
platform_t _plat;
int _cpu;
} DEFAULT platform_null_idle_wakeup;
/**
* @brief Suspend the CPU
*/
METHOD void sleep {
platform_t _plat;
};
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