/**
 * hypervisor.c
 * SPE プロセスマネージャ spe_manager
 * procfs エントリ "hypervisor" のハンドラ
 */

#include <linux/module.h>     // カーネルモジュール全般
#include <linux/kernel.h>     // printk
#include <linux/spinlock.h>   // spin_lock, spin_unlock

#include "../../include/hvcalls/common.h"
#include "../../include/hvcalls/ppe.h"
#include "../main.h"
#include "../lspe.h"
#include "hypervisor.h"



//============================================================================================= procfs_hypervisor_read()
/**
 * procfs_hypervisor_read
 * procfs エントリ "hypervisor" の read イベントハンドラ
 *
 * @param  char *   page
 * @param  char **  start
 * @param  off_t    off
 * @param  int      count
 * @param  int *    eof
 * @param  void *   data
 * @return int
 */
int procfs_hypervisor_read(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	HVC_u64 lpar_id, ppe_id, vas_id;
	int     lspe;
	int     i, length = 0;



	//----- 論理パーティション識別子, 論理 PPE 識別子, 仮想アドレス識別子 --------------------------
	hvc_get_lpar_id(&lpar_id);
	hvc_get_ppe_id(&ppe_id);
	if (hvc_get_vas_id(ppe_id, &vas_id))
	{
		printk(KERN_ERR "[%s] Error: hvc_get_vas_id() (%s:%u)\n", SPE_MANAGER_MODULE_NAME, __FILE__, __LINE__);
	}
	length += sprintf (
		page + length,
		"                           Value\n"
		"---------------------------------\n"
		" Logical Partition ID      %5lu\n"
		" Logical PPE ID            %5lu\n"
		" Virtual Address Space ID  %5lu\n"
		"---------------------------------\n"
		"\n",
		lpar_id, ppe_id, vas_id
	);

	//----- 論理 SPE -------------------------------------------------------------------------------
	length += sprintf (
		page + length,
		"Logical SPEs...\n"
		"\n"
		" No.  SPE ID  LS Addr             ProbStateReg Addr   Privilege2 Addr\n"
		"-------------------------------------------------------------------------\n"
	);
	lspe = get_lspe_count();
	for (i = 0; i < lspe; i++)
	{
		lspe_data_t *data = get_lspe_data(i);
		length += sprintf (
			page + length,
			"  #%d  %6lu  0x%016lx  0x%016lx  0x%016lx\n",
			i, data->spe_id, (unsigned long)(data->ls), (unsigned long)(data->problem), (unsigned long)(data->priv2)
		);
	}
	length += sprintf (
		page + length,
		"-------------------------------------------------------------------------\n"
	);


	*eof = 1;
	return length;
}