1 files changed, 222 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/perfmon_fsl_booke.c b/arch/powerpc/kernel/perfmon_fsl_booke.c
new file mode 100644
index 000000000000..32455dfcc36b
--- /dev/null
+++ b/arch/powerpc/kernel/perfmon_fsl_booke.c
@@ -0,0 +1,222 @@
+/* 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/pmc.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);