linux/arch/ppc/kernel/perfmon_fsl_booke.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

223 lines
4.1 KiB
C

/* kernel/perfmon_fsl_booke.c
* Freescale Book-E Performance Monitor code
*
* Author: Andy Fleming
* Copyright (c) 2004 Freescale Semiconductor, Inc
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/interrupt.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/prctl.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/reg.h>
#include <asm/xmon.h>
#include <asm/perfmon.h>
static inline u32 get_pmlca(int ctr);
static inline void set_pmlca(int ctr, u32 pmlca);
static inline u32 get_pmlca(int ctr)
{
u32 pmlca;
switch (ctr) {
case 0:
pmlca = mfpmr(PMRN_PMLCA0);
break;
case 1:
pmlca = mfpmr(PMRN_PMLCA1);
break;
case 2:
pmlca = mfpmr(PMRN_PMLCA2);
break;
case 3:
pmlca = mfpmr(PMRN_PMLCA3);
break;
default:
panic("Bad ctr number\n");
}
return pmlca;
}
static inline void set_pmlca(int ctr, u32 pmlca)
{
switch (ctr) {
case 0:
mtpmr(PMRN_PMLCA0, pmlca);
break;
case 1:
mtpmr(PMRN_PMLCA1, pmlca);
break;
case 2:
mtpmr(PMRN_PMLCA2, pmlca);
break;
case 3:
mtpmr(PMRN_PMLCA3, pmlca);
break;
default:
panic("Bad ctr number\n");
}
}
void init_pmc_stop(int ctr)
{
u32 pmlca = (PMLCA_FC | PMLCA_FCS | PMLCA_FCU |
PMLCA_FCM1 | PMLCA_FCM0);
u32 pmlcb = 0;
switch (ctr) {
case 0:
mtpmr(PMRN_PMLCA0, pmlca);
mtpmr(PMRN_PMLCB0, pmlcb);
break;
case 1:
mtpmr(PMRN_PMLCA1, pmlca);
mtpmr(PMRN_PMLCB1, pmlcb);
break;
case 2:
mtpmr(PMRN_PMLCA2, pmlca);
mtpmr(PMRN_PMLCB2, pmlcb);
break;
case 3:
mtpmr(PMRN_PMLCA3, pmlca);
mtpmr(PMRN_PMLCB3, pmlcb);
break;
default:
panic("Bad ctr number!\n");
}
}
void set_pmc_event(int ctr, int event)
{
u32 pmlca;
pmlca = get_pmlca(ctr);
pmlca = (pmlca & ~PMLCA_EVENT_MASK) |
((event << PMLCA_EVENT_SHIFT) &
PMLCA_EVENT_MASK);
set_pmlca(ctr, pmlca);
}
void set_pmc_user_kernel(int ctr, int user, int kernel)
{
u32 pmlca;
pmlca = get_pmlca(ctr);
if(user)
pmlca &= ~PMLCA_FCU;
else
pmlca |= PMLCA_FCU;
if(kernel)
pmlca &= ~PMLCA_FCS;
else
pmlca |= PMLCA_FCS;
set_pmlca(ctr, pmlca);
}
void set_pmc_marked(int ctr, int mark0, int mark1)
{
u32 pmlca = get_pmlca(ctr);
if(mark0)
pmlca &= ~PMLCA_FCM0;
else
pmlca |= PMLCA_FCM0;
if(mark1)
pmlca &= ~PMLCA_FCM1;
else
pmlca |= PMLCA_FCM1;
set_pmlca(ctr, pmlca);
}
void pmc_start_ctr(int ctr, int enable)
{
u32 pmlca = get_pmlca(ctr);
pmlca &= ~PMLCA_FC;
if (enable)
pmlca |= PMLCA_CE;
else
pmlca &= ~PMLCA_CE;
set_pmlca(ctr, pmlca);
}
void pmc_start_ctrs(int enable)
{
u32 pmgc0 = mfpmr(PMRN_PMGC0);
pmgc0 &= ~PMGC0_FAC;
pmgc0 |= PMGC0_FCECE;
if (enable)
pmgc0 |= PMGC0_PMIE;
else
pmgc0 &= ~PMGC0_PMIE;
mtpmr(PMRN_PMGC0, pmgc0);
}
void pmc_stop_ctrs(void)
{
u32 pmgc0 = mfpmr(PMRN_PMGC0);
pmgc0 |= PMGC0_FAC;
pmgc0 &= ~(PMGC0_PMIE | PMGC0_FCECE);
mtpmr(PMRN_PMGC0, pmgc0);
}
void dump_pmcs(void)
{
printk("pmgc0: %x\n", mfpmr(PMRN_PMGC0));
printk("pmc\t\tpmlca\t\tpmlcb\n");
printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC0),
mfpmr(PMRN_PMLCA0), mfpmr(PMRN_PMLCB0));
printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC1),
mfpmr(PMRN_PMLCA1), mfpmr(PMRN_PMLCB1));
printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC2),
mfpmr(PMRN_PMLCA2), mfpmr(PMRN_PMLCB2));
printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC3),
mfpmr(PMRN_PMLCA3), mfpmr(PMRN_PMLCB3));
}
EXPORT_SYMBOL(init_pmc_stop);
EXPORT_SYMBOL(set_pmc_event);
EXPORT_SYMBOL(set_pmc_user_kernel);
EXPORT_SYMBOL(set_pmc_marked);
EXPORT_SYMBOL(pmc_start_ctr);
EXPORT_SYMBOL(pmc_start_ctrs);
EXPORT_SYMBOL(pmc_stop_ctrs);
EXPORT_SYMBOL(dump_pmcs);