static void p4_setup_ctrs(struct op_msrs const * const msrs)
{
unsigned int i;
unsigned int low, high;
unsigned int stag;
stag = get_stagger();
rdmsr(MSR_IA32_MISC_ENABLE, low, high);
if (!MISC_PMC_ENABLED_P(low)) {
printk(KERN_ERR "oprofile: P4 PMC not available\n");
return;
}
/* clear the cccrs we will use */
for (i = 0 ; i < num_counters ; i++) {
if (unlikely(!CTRL_IS_RESERVED(msrs, i)))
continue;
rdmsr(p4_counters[VIRT_CTR(stag, i)].cccr_address, low, high);
CCCR_CLEAR(low);
CCCR_SET_REQUIRED_BITS(low);
wrmsr(p4_counters[VIRT_CTR(stag, i)].cccr_address, low, high);
}
/* clear all escrs (including those outside our concern) */
for (i = num_counters; i < num_controls; i++) {
if (unlikely(!CTRL_IS_RESERVED(msrs, i)))
continue;
wrmsr(msrs->controls[i].addr, 0, 0);
}
/* setup all counters */
for (i = 0 ; i < num_counters ; ++i) {
if ((counter_config[i].enabled) && (CTRL_IS_RESERVED(msrs, i))) {
reset_value[i] = counter_config[i].count;
pmc_setup_one_p4_counter(i);
CTR_WRITE(counter_config[i].count, VIRT_CTR(stag, i));
} else {
reset_value[i] = 0;
}
}
}
static void athlon_shutdown(struct op_msrs const * const msrs)
{
int i;
for (i = 0 ; i < NUM_COUNTERS ; ++i) {
if (CTR_IS_RESERVED(msrs,i))
release_perfctr_nmi(MSR_K7_PERFCTR0 + i);
}
for (i = 0 ; i < NUM_CONTROLS ; ++i) {
if (CTRL_IS_RESERVED(msrs,i))
release_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
}
}
static void athlon_setup_ctrs(struct op_msrs const * const msrs)
{
unsigned int low, high;
int i;
/* clear all counters */
for (i = 0 ; i < NUM_CONTROLS; ++i) {
if (unlikely(!CTRL_IS_RESERVED(msrs,i)))
continue;
CTRL_READ(low, high, msrs, i);
CTRL_CLEAR_LO(low);
CTRL_CLEAR_HI(high);
CTRL_WRITE(low, high, msrs, i);
}
/* avoid a false detection of ctr overflows in NMI handler */
for (i = 0; i < NUM_COUNTERS; ++i) {
if (unlikely(!CTR_IS_RESERVED(msrs,i)))
continue;
CTR_WRITE(1, msrs, i);
}
/* enable active counters */
for (i = 0; i < NUM_COUNTERS; ++i) {
if ((counter_config[i].enabled) && (CTR_IS_RESERVED(msrs,i))) {
reset_value[i] = counter_config[i].count;
CTR_WRITE(counter_config[i].count, msrs, i);
CTRL_READ(low, high, msrs, i);
CTRL_CLEAR_LO(low);
CTRL_CLEAR_HI(high);
CTRL_SET_ENABLE(low);
CTRL_SET_USR(low, counter_config[i].user);
CTRL_SET_KERN(low, counter_config[i].kernel);
CTRL_SET_UM(low, counter_config[i].unit_mask);
CTRL_SET_EVENT_LOW(low, counter_config[i].event);
CTRL_SET_EVENT_HIGH(high, counter_config[i].event);
CTRL_SET_HOST_ONLY(high, 0);
CTRL_SET_GUEST_ONLY(high, 0);
CTRL_WRITE(low, high, msrs, i);
} else {
reset_value[i] = 0;
}
}
}
static void ppro_shutdown(struct op_msrs const * const msrs)
{
int i;
for (i = 0 ; i < num_counters ; ++i) {
if (CTR_IS_RESERVED(msrs, i))
release_perfctr_nmi(MSR_P6_PERFCTR0 + i);
}
for (i = 0 ; i < num_counters ; ++i) {
if (CTRL_IS_RESERVED(msrs, i))
release_evntsel_nmi(MSR_P6_EVNTSEL0 + i);
}
if (reset_value) {
kfree(reset_value);
reset_value = NULL;
}
}
static void p4_shutdown(struct op_msrs const * const msrs)
{
int i;
for (i = 0 ; i < num_counters ; ++i) {
if (CTR_IS_RESERVED(msrs,i))
release_perfctr_nmi(msrs->counters[i].addr);
}
/* some of the control registers are specially reserved in
* conjunction with the counter registers (hence the starting offset).
* This saves a few bits.
*/
for (i = num_counters ; i < num_controls ; ++i) {
if (CTRL_IS_RESERVED(msrs,i))
release_evntsel_nmi(msrs->controls[i].addr);
}
}
static void ppro_setup_ctrs(struct op_msrs const * const msrs)
{
unsigned int low, high;
int i;
if (!reset_value) {
reset_value = kmalloc(sizeof(reset_value[0]) * num_counters,
GFP_ATOMIC);
if (!reset_value)
return;
}
if (cpu_has_arch_perfmon) {
union cpuid10_eax eax;
eax.full = cpuid_eax(0xa);
/*
* For Core2 (family 6, model 15), don't reset the
* counter width:
*/
if (!(eax.split.version_id == 0 &&
current_cpu_data.x86 == 6 &&
current_cpu_data.x86_model == 15)) {
if (counter_width < eax.split.bit_width)
counter_width = eax.split.bit_width;
}
}
/* clear all counters */
for (i = 0 ; i < num_counters; ++i) {
if (unlikely(!CTRL_IS_RESERVED(msrs, i)))
continue;
CTRL_READ(low, high, msrs, i);
CTRL_CLEAR(low);
CTRL_WRITE(low, high, msrs, i);
}
/* avoid a false detection of ctr overflows in NMI handler */
for (i = 0; i < num_counters; ++i) {
if (unlikely(!CTR_IS_RESERVED(msrs, i)))
continue;
wrmsrl(msrs->counters[i].addr, -1LL);
}
/* enable active counters */
for (i = 0; i < num_counters; ++i) {
if ((counter_config[i].enabled) && (CTR_IS_RESERVED(msrs, i))) {
reset_value[i] = counter_config[i].count;
wrmsrl(msrs->counters[i].addr, -reset_value[i]);
CTRL_READ(low, high, msrs, i);
CTRL_CLEAR(low);
CTRL_SET_ENABLE(low);
CTRL_SET_USR(low, counter_config[i].user);
CTRL_SET_KERN(low, counter_config[i].kernel);
CTRL_SET_UM(low, counter_config[i].unit_mask);
CTRL_SET_EVENT(low, counter_config[i].event);
CTRL_WRITE(low, high, msrs, i);
} else {
reset_value[i] = 0;
}
}
}
