diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 39 |
2 files changed, 32 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 0ebe0f4..503da23 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2281,7 +2281,7 @@ enum punit_power_well { /* Same as Haswell, but 72064 bytes now. */ #define GEN8_CXT_TOTAL_SIZE (18 * PAGE_SIZE) - +#define CHV_CLK_CTL1 0x101100 #define VLV_CLK_CTL2 0x101104 #define CLK_CTL2_CZCOUNT_30NS_SHIFT 28 diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index b15c8ce..ae7fd8f 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -47,22 +47,45 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) intel_runtime_pm_get(dev_priv); - /* On VLV, residency time is in CZ units rather than 1.28us */ + /* On VLV and CHV, residency time is in CZ units rather than 1.28us */ if (IS_VALLEYVIEW(dev)) { - u32 clkctl2; + u32 reg, czcount_30ns; - clkctl2 = I915_READ(VLV_CLK_CTL2) >> - CLK_CTL2_CZCOUNT_30NS_SHIFT; - if (!clkctl2) { - WARN(!clkctl2, "bogus CZ count value"); + if (IS_CHERRYVIEW(dev)) + reg = CHV_CLK_CTL1; + else + reg = VLV_CLK_CTL2; + + czcount_30ns = I915_READ(reg) >> CLK_CTL2_CZCOUNT_30NS_SHIFT; + + if (!czcount_30ns) { + WARN(!czcount_30ns, "bogus CZ count value"); ret = 0; goto out; } - units = DIV_ROUND_UP_ULL(30ULL * bias, (u64)clkctl2); + + units = 0; + div = 1000000ULL; + + if (IS_CHERRYVIEW(dev)) { + /* Special case for 320Mhz */ + if (czcount_30ns == 1) { + div = 10000000ULL; + units = 3125ULL; + } else { + /* chv counts are one less */ + czcount_30ns += 1; + } + } + + if (units == 0) + units = DIV_ROUND_UP_ULL(30ULL * bias, + (u64)czcount_30ns); + if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) units <<= 8; - div = 1000000ULL * bias; + div = div * bias; } raw_time = I915_READ(reg) * units; |
