f7f6f4fea6
This patches the ppc32 and ppc64 versions of the headers and .c files
with helper functions for manipulating the performance counting
hardware. As a side effect, it removes use of the term "perfmon" from
ppc32, thus avoiding confusion with the unrelated performance counter
interface from HP Labs also called "perfmon".
Built, but not booted, for g5, pSeries, iSeries, and 32-bit Powermac
with both ARCH=powerpc and ARCH=ppc{,64} as appropriate.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
223 lines
4 KiB
C
223 lines
4 KiB
C
/* kernel/perfmon_fsl_booke.c
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* Freescale Book-E Performance Monitor code
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*
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* Author: Andy Fleming
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* Copyright (c) 2004 Freescale Semiconductor, Inc
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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#include <linux/interrupt.h>
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/prctl.h>
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#include <asm/pgtable.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/reg.h>
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#include <asm/xmon.h>
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#include <asm/pmc.h>
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static inline u32 get_pmlca(int ctr);
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static inline void set_pmlca(int ctr, u32 pmlca);
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static inline u32 get_pmlca(int ctr)
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{
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u32 pmlca;
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switch (ctr) {
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case 0:
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pmlca = mfpmr(PMRN_PMLCA0);
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break;
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case 1:
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pmlca = mfpmr(PMRN_PMLCA1);
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break;
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case 2:
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pmlca = mfpmr(PMRN_PMLCA2);
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break;
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case 3:
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pmlca = mfpmr(PMRN_PMLCA3);
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break;
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default:
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panic("Bad ctr number\n");
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}
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return pmlca;
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}
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static inline void set_pmlca(int ctr, u32 pmlca)
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{
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switch (ctr) {
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case 0:
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mtpmr(PMRN_PMLCA0, pmlca);
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break;
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case 1:
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mtpmr(PMRN_PMLCA1, pmlca);
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break;
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case 2:
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mtpmr(PMRN_PMLCA2, pmlca);
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break;
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case 3:
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mtpmr(PMRN_PMLCA3, pmlca);
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break;
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default:
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panic("Bad ctr number\n");
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}
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}
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void init_pmc_stop(int ctr)
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{
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u32 pmlca = (PMLCA_FC | PMLCA_FCS | PMLCA_FCU |
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PMLCA_FCM1 | PMLCA_FCM0);
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u32 pmlcb = 0;
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switch (ctr) {
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case 0:
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mtpmr(PMRN_PMLCA0, pmlca);
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mtpmr(PMRN_PMLCB0, pmlcb);
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break;
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case 1:
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mtpmr(PMRN_PMLCA1, pmlca);
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mtpmr(PMRN_PMLCB1, pmlcb);
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break;
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case 2:
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mtpmr(PMRN_PMLCA2, pmlca);
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mtpmr(PMRN_PMLCB2, pmlcb);
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break;
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case 3:
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mtpmr(PMRN_PMLCA3, pmlca);
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mtpmr(PMRN_PMLCB3, pmlcb);
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break;
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default:
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panic("Bad ctr number!\n");
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}
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}
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void set_pmc_event(int ctr, int event)
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{
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u32 pmlca;
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pmlca = get_pmlca(ctr);
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pmlca = (pmlca & ~PMLCA_EVENT_MASK) |
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((event << PMLCA_EVENT_SHIFT) &
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PMLCA_EVENT_MASK);
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set_pmlca(ctr, pmlca);
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}
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void set_pmc_user_kernel(int ctr, int user, int kernel)
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{
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u32 pmlca;
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pmlca = get_pmlca(ctr);
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if(user)
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pmlca &= ~PMLCA_FCU;
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else
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pmlca |= PMLCA_FCU;
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if(kernel)
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pmlca &= ~PMLCA_FCS;
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else
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pmlca |= PMLCA_FCS;
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set_pmlca(ctr, pmlca);
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}
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void set_pmc_marked(int ctr, int mark0, int mark1)
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{
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u32 pmlca = get_pmlca(ctr);
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if(mark0)
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pmlca &= ~PMLCA_FCM0;
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else
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pmlca |= PMLCA_FCM0;
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if(mark1)
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pmlca &= ~PMLCA_FCM1;
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else
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pmlca |= PMLCA_FCM1;
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set_pmlca(ctr, pmlca);
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}
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void pmc_start_ctr(int ctr, int enable)
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{
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u32 pmlca = get_pmlca(ctr);
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pmlca &= ~PMLCA_FC;
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if (enable)
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pmlca |= PMLCA_CE;
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else
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pmlca &= ~PMLCA_CE;
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set_pmlca(ctr, pmlca);
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}
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void pmc_start_ctrs(int enable)
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{
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u32 pmgc0 = mfpmr(PMRN_PMGC0);
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pmgc0 &= ~PMGC0_FAC;
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pmgc0 |= PMGC0_FCECE;
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if (enable)
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pmgc0 |= PMGC0_PMIE;
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else
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pmgc0 &= ~PMGC0_PMIE;
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mtpmr(PMRN_PMGC0, pmgc0);
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}
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void pmc_stop_ctrs(void)
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{
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u32 pmgc0 = mfpmr(PMRN_PMGC0);
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pmgc0 |= PMGC0_FAC;
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pmgc0 &= ~(PMGC0_PMIE | PMGC0_FCECE);
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mtpmr(PMRN_PMGC0, pmgc0);
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}
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void dump_pmcs(void)
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{
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printk("pmgc0: %x\n", mfpmr(PMRN_PMGC0));
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printk("pmc\t\tpmlca\t\tpmlcb\n");
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printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC0),
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mfpmr(PMRN_PMLCA0), mfpmr(PMRN_PMLCB0));
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printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC1),
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mfpmr(PMRN_PMLCA1), mfpmr(PMRN_PMLCB1));
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printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC2),
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mfpmr(PMRN_PMLCA2), mfpmr(PMRN_PMLCB2));
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printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC3),
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mfpmr(PMRN_PMLCA3), mfpmr(PMRN_PMLCB3));
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}
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EXPORT_SYMBOL(init_pmc_stop);
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EXPORT_SYMBOL(set_pmc_event);
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EXPORT_SYMBOL(set_pmc_user_kernel);
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EXPORT_SYMBOL(set_pmc_marked);
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EXPORT_SYMBOL(pmc_start_ctr);
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EXPORT_SYMBOL(pmc_start_ctrs);
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EXPORT_SYMBOL(pmc_stop_ctrs);
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EXPORT_SYMBOL(dump_pmcs);
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