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authorLionel Landwerlin <lionel.g.landwerlin@intel.com>2017-10-27 15:59:31 +0100
committerLionel Landwerlin <lionel.g.landwerlin@intel.com>2017-11-20 16:09:04 +0000
commit9f9b2792b6d38fbc8028f31b41ebd38a3f28a401 (patch)
tree9d099910414fc701fec590fbd436ef74af7093cf /drivers/gpu
parent3fef5cda970124a15c553c1672d800e40fc08a9e (diff)
drm/i915/perf: reuse timestamp frequency from device info
Now that we have this stored in the device info, we can drop it from perf part of the driver. Note that this requires to init perf after we've computed the frequency, hence why we move i915_perf_init() from i915_driver_init_early() to after intel_device_info_runtime_init(). v2: Use div_u64 (Chris) v3: Drop u64 divs by switching to kHz (Chris/Ville) Move i915_perf_fini to i915_driver_cleanup_hw (Matthew) Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171113181902.12411-2-lionel.g.landwerlin@intel.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/i915_drv.c7
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h1
-rw-r--r--drivers/gpu/drm/i915/i915_perf.c36
3 files changed, 9 insertions, 35 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 87452c5558d3..2b4ced93011b 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -936,8 +936,6 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv,
intel_detect_preproduction_hw(dev_priv);
- i915_perf_init(dev_priv);
-
return 0;
err_irq:
@@ -954,7 +952,6 @@ err_engines:
*/
static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv)
{
- i915_perf_fini(dev_priv);
i915_gem_load_cleanup(dev_priv);
intel_irq_fini(dev_priv);
i915_workqueues_cleanup(dev_priv);
@@ -1101,6 +1098,8 @@ static int i915_driver_init_hw(struct drm_i915_private *dev_priv)
intel_sanitize_options(dev_priv);
+ i915_perf_init(dev_priv);
+
ret = i915_ggtt_probe_hw(dev_priv);
if (ret)
return ret;
@@ -1206,6 +1205,8 @@ static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv)
{
struct pci_dev *pdev = dev_priv->drm.pdev;
+ i915_perf_fini(dev_priv);
+
if (pdev->msi_enabled)
pci_disable_msi(pdev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 36bb4927484a..2b766253f970 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2619,7 +2619,6 @@ struct drm_i915_private {
bool periodic;
int period_exponent;
- int timestamp_frequency;
struct i915_oa_config test_config;
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index fd150099978c..adbce839a918 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2690,8 +2690,8 @@ err:
static u64 oa_exponent_to_ns(struct drm_i915_private *dev_priv, int exponent)
{
- return div_u64(1000000000ULL * (2ULL << exponent),
- dev_priv->perf.oa.timestamp_frequency);
+ return div64_u64(1000000000ULL * (2ULL << exponent),
+ 1000ULL * INTEL_INFO(dev_priv)->cs_timestamp_frequency_khz);
}
/**
@@ -3423,8 +3423,6 @@ static struct ctl_table dev_root[] = {
*/
void i915_perf_init(struct drm_i915_private *dev_priv)
{
- dev_priv->perf.oa.timestamp_frequency = 0;
-
if (IS_HASWELL(dev_priv)) {
dev_priv->perf.oa.ops.is_valid_b_counter_reg =
gen7_is_valid_b_counter_addr;
@@ -3440,8 +3438,6 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
dev_priv->perf.oa.ops.oa_hw_tail_read =
gen7_oa_hw_tail_read;
- dev_priv->perf.oa.timestamp_frequency = 12500000;
-
dev_priv->perf.oa.oa_formats = hsw_oa_formats;
} else if (i915_modparams.enable_execlists) {
/* Note: that although we could theoretically also support the
@@ -3485,23 +3481,6 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
dev_priv->perf.oa.gen8_valid_ctx_bit = (1<<16);
}
-
- switch (dev_priv->info.platform) {
- case INTEL_BROADWELL:
- dev_priv->perf.oa.timestamp_frequency = 12500000;
- break;
- case INTEL_BROXTON:
- case INTEL_GEMINILAKE:
- dev_priv->perf.oa.timestamp_frequency = 19200000;
- break;
- case INTEL_SKYLAKE:
- case INTEL_KABYLAKE:
- case INTEL_COFFEELAKE:
- dev_priv->perf.oa.timestamp_frequency = 12000000;
- break;
- default:
- break;
- }
} else if (IS_GEN10(dev_priv)) {
dev_priv->perf.oa.ops.is_valid_b_counter_reg =
gen7_is_valid_b_counter_addr;
@@ -3517,15 +3496,10 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
dev_priv->perf.oa.ctx_flexeu0_offset = 0x3de;
dev_priv->perf.oa.gen8_valid_ctx_bit = (1<<16);
-
- /* Default frequency, although we need to read it from
- * the register as it might vary between parts.
- */
- dev_priv->perf.oa.timestamp_frequency = 12000000;
}
}
- if (dev_priv->perf.oa.timestamp_frequency) {
+ if (dev_priv->perf.oa.ops.enable_metric_set) {
hrtimer_init(&dev_priv->perf.oa.poll_check_timer,
CLOCK_MONOTONIC, HRTIMER_MODE_REL);
dev_priv->perf.oa.poll_check_timer.function = oa_poll_check_timer_cb;
@@ -3535,8 +3509,8 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
mutex_init(&dev_priv->perf.lock);
spin_lock_init(&dev_priv->perf.oa.oa_buffer.ptr_lock);
- oa_sample_rate_hard_limit =
- dev_priv->perf.oa.timestamp_frequency / 2;
+ oa_sample_rate_hard_limit = 1000 *
+ (INTEL_INFO(dev_priv)->cs_timestamp_frequency_khz / 2);
dev_priv->perf.sysctl_header = register_sysctl_table(dev_root);
mutex_init(&dev_priv->perf.metrics_lock);