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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/sys/misc.h $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2011,2012 */
/* */
/* p1 */
/* */
/* Object Code Only (OCO) source materials */
/* Licensed Internal Code Source Materials */
/* IBM HostBoot Licensed Internal Code */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __SYS_MISC_H
#define __SYS_MISC_H
#include <stdint.h>
/**
* @enum ShutdownStatus
*
* Shutdown values for shutdown command.
*/
enum ShutdownStatus
{
SHUTDOWN_STATUS_GOOD = 0x01230000,
SHUTDOWN_STATUS_UT_FAILED = 0x01230001,
SHUTDOWN_STATUS_ISTEP_FAILED = 0x01230002,
SHUTDOWN_STATUS_EXTINITSVC_FAILED = 0x01230003,
SHUTDOWN_STATUS_INITSVC_FAILED = 0x01230004,
};
#ifdef __cplusplus
extern "C"
{
#endif
#ifdef __HIDDEN_SYSCALL_SHUTDOWN
/** @fn shutdown()
* @brief Shutdown all CPUs (hardware threads)
* @param[in] i_status The status code to post
* @param[in] i_payload_base The base address (target HRMOR) of the payload.
* @param[in] i_payload_entry The offset from base address of the payload
* entry-point.
*/
extern "C" void shutdown(uint64_t i_status,
uint64_t i_payload_base,
uint64_t i_payload_entry);
#endif
/** @enum ProcessorCoreType
* @brief Enumeration of the different supported processor cores.
*/
enum ProcessorCoreType
{
/** Power8 "Murano" (low-end) core */
CORE_POWER8_MURANO,
/** Power8 "Venice" (high-end) core */
CORE_POWER8_VENICE,
CORE_UNKNOWN,
};
/** @fn cpu_core_type()
* @brief Determine the procesore core type.
*
* @return ProcessorCoreType - Value from enumeration for this core.
*/
ProcessorCoreType cpu_core_type();
/** @fn cpu_dd_level()
* @brief Determine the processor DD level.
*
* @return 1 byte DD level as <major nibble, minor nibble>.
*/
uint8_t cpu_dd_level();
/** @fn cpu_thread_count()
* @brief Get the number of threads per cpu for this proctype
* @return # of threads per cpu
*/
size_t cpu_thread_count();
/** @fn cpu_start_core
* @brief Have the kernel start a new core.
*
* @param[in] pir - PIR value of the first thread on the core.
*
* @note The kernel will start all threads on the requested core even
* though the callee only requests with a single PIR value.
*
* @return 0 or -(errno) on failure.
*
* @retval -ENXIO - The core ID was outside of the range the kernel is
* prepared to support.
*/
int cpu_start_core(uint64_t pir);
/**
* @enum CpuSprNames
*
* Names for SPR registers for cpu_spr_value().
*/
enum CpuSprNames
{
CPU_SPR_MSR,
CPU_SPR_LPCR,
CPU_SPR_HRMOR,
};
/** @fn cpu_spr_value
* @brief Reads the kernel-desired value for an SPR.
*
* This is used, for instance, in building a sleep-winkle image.
*
* @return The desired value of the SPR register.
*/
uint64_t cpu_spr_value(CpuSprNames spr);
/** @fn cpu_master_winkle
* @brief Winkle the master core so runtime SLW image can be applied.
*
* This requires that the master core is the only one executing instructions.
* Will execute the winkle instruction on all running threads and return when
* an IPI is receieved on the master thread of the core.
*
* @retval 0 - Success
* @retval -EDEADLK - Cores other than the master are already running.
*
* @note This function will migrate the task to the master thread and in the
* process will unset any task affinity. See task_affinity_unpin().
*/
int cpu_master_winkle();
#ifdef __cplusplus
}
#endif
#endif
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