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-rw-r--r--arch/powerpc/kernel/cputable.c2
-rw-r--r--arch/powerpc/kernel/sysfs.c12
-rw-r--r--arch/powerpc/oprofile/Makefile2
-rw-r--r--arch/powerpc/oprofile/common.c3
-rw-r--r--arch/powerpc/oprofile/op_model_pa6t.c234
5 files changed, 246 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index ad74fecae50..9cb24d20f0f 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -389,6 +389,8 @@ static struct cpu_spec cpu_specs[] = {
.pmc_type = PPC_PMC_PA6T,
.cpu_setup = __setup_cpu_pa6t,
.cpu_restore = __restore_cpu_pa6t,
+ .oprofile_cpu_type = "ppc64/pa6t",
+ .oprofile_type = PPC_OPROFILE_PA6T,
.platform = "pa6t",
},
{ /* default match */
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 476f1d54605..6fc27e771b5 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -189,12 +189,12 @@ SYSFS_PMCSETUP(purr, SPRN_PURR);
SYSFS_PMCSETUP(spurr, SPRN_SPURR);
SYSFS_PMCSETUP(dscr, SPRN_DSCR);
-SYSFS_PMCSETUP(pa6t_pmc0, PA6T_SPRN_PMC0);
-SYSFS_PMCSETUP(pa6t_pmc1, PA6T_SPRN_PMC1);
-SYSFS_PMCSETUP(pa6t_pmc2, PA6T_SPRN_PMC2);
-SYSFS_PMCSETUP(pa6t_pmc3, PA6T_SPRN_PMC3);
-SYSFS_PMCSETUP(pa6t_pmc4, PA6T_SPRN_PMC4);
-SYSFS_PMCSETUP(pa6t_pmc5, PA6T_SPRN_PMC5);
+SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
+SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
+SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
+SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
+SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
+SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
diff --git a/arch/powerpc/oprofile/Makefile b/arch/powerpc/oprofile/Makefile
index 4ccef2d5530..4b5f9528218 100644
--- a/arch/powerpc/oprofile/Makefile
+++ b/arch/powerpc/oprofile/Makefile
@@ -12,6 +12,6 @@ DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \
oprofile-y := $(DRIVER_OBJS) common.o backtrace.o
oprofile-$(CONFIG_PPC_CELL_NATIVE) += op_model_cell.o
-oprofile-$(CONFIG_PPC64) += op_model_rs64.o op_model_power4.o
+oprofile-$(CONFIG_PPC64) += op_model_rs64.o op_model_power4.o op_model_pa6t.o
oprofile-$(CONFIG_FSL_BOOKE) += op_model_fsl_booke.o
oprofile-$(CONFIG_6xx) += op_model_7450.o
diff --git a/arch/powerpc/oprofile/common.c b/arch/powerpc/oprofile/common.c
index fbd62eacfdf..1a7ef7e246d 100644
--- a/arch/powerpc/oprofile/common.c
+++ b/arch/powerpc/oprofile/common.c
@@ -160,6 +160,9 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
case PPC_OPROFILE_POWER4:
model = &op_model_power4;
break;
+ case PPC_OPROFILE_PA6T:
+ model = &op_model_pa6t;
+ break;
#endif
#ifdef CONFIG_6xx
case PPC_OPROFILE_G4:
diff --git a/arch/powerpc/oprofile/op_model_pa6t.c b/arch/powerpc/oprofile/op_model_pa6t.c
new file mode 100644
index 00000000000..e8a56b0adad
--- /dev/null
+++ b/arch/powerpc/oprofile/op_model_pa6t.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2006-2007 PA Semi, Inc
+ *
+ * Author: Shashi Rao, PA Semi
+ *
+ * Maintained by: Olof Johansson <olof@lixom.net>
+ *
+ * Based on arch/powerpc/oprofile/op_model_power4.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/oprofile.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
+#include <asm/processor.h>
+#include <asm/cputable.h>
+#include <asm/oprofile_impl.h>
+#include <asm/reg.h>
+
+static unsigned char oprofile_running;
+
+/* mmcr values are set in pa6t_reg_setup, used in pa6t_cpu_setup */
+static u64 mmcr0_val;
+static u64 mmcr1_val;
+
+/* inited in pa6t_reg_setup */
+static u64 reset_value[OP_MAX_COUNTER];
+
+static inline u64 ctr_read(unsigned int i)
+{
+ switch (i) {
+ case 0:
+ return mfspr(SPRN_PA6T_PMC0);
+ case 1:
+ return mfspr(SPRN_PA6T_PMC1);
+ case 2:
+ return mfspr(SPRN_PA6T_PMC2);
+ case 3:
+ return mfspr(SPRN_PA6T_PMC3);
+ case 4:
+ return mfspr(SPRN_PA6T_PMC4);
+ case 5:
+ return mfspr(SPRN_PA6T_PMC5);
+ default:
+ printk(KERN_ERR "ctr_read called with bad arg %u\n", i);
+ return 0;
+ }
+}
+
+static inline void ctr_write(unsigned int i, u64 val)
+{
+ switch (i) {
+ case 0:
+ mtspr(SPRN_PA6T_PMC0, val);
+ break;
+ case 1:
+ mtspr(SPRN_PA6T_PMC1, val);
+ break;
+ case 2:
+ mtspr(SPRN_PA6T_PMC2, val);
+ break;
+ case 3:
+ mtspr(SPRN_PA6T_PMC3, val);
+ break;
+ case 4:
+ mtspr(SPRN_PA6T_PMC4, val);
+ break;
+ case 5:
+ mtspr(SPRN_PA6T_PMC5, val);
+ break;
+ default:
+ printk(KERN_ERR "ctr_write called with bad arg %u\n", i);
+ break;
+ }
+}
+
+
+/* precompute the values to stuff in the hardware registers */
+static void pa6t_reg_setup(struct op_counter_config *ctr,
+ struct op_system_config *sys,
+ int num_ctrs)
+{
+ int pmc;
+
+ /*
+ * adjust the mmcr0.en[0-5] and mmcr0.inten[0-5] values obtained from the
+ * event_mappings file by turning off the counters that the user doesn't
+ * care about
+ *
+ * setup user and kernel profiling
+ */
+ for (pmc = 0; pmc < cur_cpu_spec->num_pmcs; pmc++)
+ if (!ctr[pmc].enabled) {
+ sys->mmcr0 &= ~(0x1UL << pmc);
+ sys->mmcr0 &= ~(0x1UL << (pmc+12));
+ pr_debug("turned off counter %u\n", pmc);
+ }
+
+ if (sys->enable_kernel)
+ sys->mmcr0 |= PA6T_MMCR0_SUPEN | PA6T_MMCR0_HYPEN;
+ else
+ sys->mmcr0 &= ~(PA6T_MMCR0_SUPEN | PA6T_MMCR0_HYPEN);
+
+ if (sys->enable_user)
+ sys->mmcr0 |= PA6T_MMCR0_PREN;
+ else
+ sys->mmcr0 &= ~PA6T_MMCR0_PREN;
+
+ /*
+ * The performance counter event settings are given in the mmcr0 and
+ * mmcr1 values passed from the user in the op_system_config
+ * structure (sys variable).
+ */
+ mmcr0_val = sys->mmcr0;
+ mmcr1_val = sys->mmcr1;
+ pr_debug("mmcr0_val inited to %016lx\n", sys->mmcr0);
+ pr_debug("mmcr1_val inited to %016lx\n", sys->mmcr1);
+
+ for (pmc = 0; pmc < cur_cpu_spec->num_pmcs; pmc++) {
+ /* counters are 40 bit. Move to cputable at some point? */
+ reset_value[pmc] = (0x1UL << 39) - ctr[pmc].count;
+ pr_debug("reset_value for pmc%u inited to 0x%lx\n",
+ pmc, reset_value[pmc]);
+ }
+}
+
+/* configure registers on this cpu */
+static void pa6t_cpu_setup(struct op_counter_config *ctr)
+{
+ u64 mmcr0 = mmcr0_val;
+ u64 mmcr1 = mmcr1_val;
+
+ /* Default is all PMCs off */
+ mmcr0 &= ~(0x3FUL);
+ mtspr(SPRN_PA6T_MMCR0, mmcr0);
+
+ /* program selected programmable events in */
+ mtspr(SPRN_PA6T_MMCR1, mmcr1);
+
+ pr_debug("setup on cpu %d, mmcr0 %016lx\n", smp_processor_id(),
+ mfspr(SPRN_PA6T_MMCR0));
+ pr_debug("setup on cpu %d, mmcr1 %016lx\n", smp_processor_id(),
+ mfspr(SPRN_PA6T_MMCR1));
+}
+
+static void pa6t_start(struct op_counter_config *ctr)
+{
+ int i;
+
+ /* Hold off event counting until rfid */
+ u64 mmcr0 = mmcr0_val | PA6T_MMCR0_HANDDIS;
+
+ for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
+ if (ctr[i].enabled)
+ ctr_write(i, reset_value[i]);
+ else
+ ctr_write(i, 0UL);
+
+ mtspr(SPRN_PA6T_MMCR0, mmcr0);
+
+ oprofile_running = 1;
+
+ pr_debug("start on cpu %d, mmcr0 %lx\n", smp_processor_id(), mmcr0);
+}
+
+static void pa6t_stop(void)
+{
+ u64 mmcr0;
+
+ /* freeze counters */
+ mmcr0 = mfspr(SPRN_PA6T_MMCR0);
+ mmcr0 |= PA6T_MMCR0_FCM0;
+ mtspr(SPRN_PA6T_MMCR0, mmcr0);
+
+ oprofile_running = 0;
+
+ pr_debug("stop on cpu %d, mmcr0 %lx\n", smp_processor_id(), mmcr0);
+}
+
+/* handle the perfmon overflow vector */
+static void pa6t_handle_interrupt(struct pt_regs *regs,
+ struct op_counter_config *ctr)
+{
+ unsigned long pc = mfspr(SPRN_PA6T_SIAR);
+ int is_kernel = is_kernel_addr(pc);
+ u64 val;
+ int i;
+ u64 mmcr0;
+
+ /* disable perfmon counting until rfid */
+ mmcr0 = mfspr(SPRN_PA6T_MMCR0);
+ mtspr(SPRN_PA6T_MMCR0, mmcr0 | PA6T_MMCR0_HANDDIS);
+
+ /* Record samples. We've got one global bit for whether a sample
+ * was taken, so add it for any counter that triggered overflow.
+ */
+ for (i = 0; i < cur_cpu_spec->num_pmcs; i++) {
+ val = ctr_read(i);
+ if (val & (0x1UL << 39)) { /* Overflow bit set */
+ if (oprofile_running && ctr[i].enabled) {
+ if (mmcr0 & PA6T_MMCR0_SIARLOG)
+ oprofile_add_ext_sample(pc, regs, i, is_kernel);
+ ctr_write(i, reset_value[i]);
+ } else {
+ ctr_write(i, 0UL);
+ }
+ }
+ }
+
+ /* Restore mmcr0 to a good known value since the PMI changes it */
+ mmcr0 = mmcr0_val | PA6T_MMCR0_HANDDIS;
+ mtspr(SPRN_PA6T_MMCR0, mmcr0);
+}
+
+struct op_powerpc_model op_model_pa6t = {
+ .reg_setup = pa6t_reg_setup,
+ .cpu_setup = pa6t_cpu_setup,
+ .start = pa6t_start,
+ .stop = pa6t_stop,
+ .handle_interrupt = pa6t_handle_interrupt,
+};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 21:51:45 +0000