From: Akash Goel <akash.goel@xxxxxxxxx>
Added support for SKL in the 'i915_frequency_info' debugfs function
v2: Added missing conversion to 50MHZ for reqf & cagf (Damien)
Signed-off-by: Akash Goel <akash.goel@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9af17fb..5fb0121 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1089,7 +1089,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
seq_printf(m, "Current P-state: %d\n",
(rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
} else if (IS_GEN6(dev) || (IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) ||
- IS_BROADWELL(dev)) {
+ IS_BROADWELL(dev) || IS_GEN9(dev)) {
u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
@@ -1108,11 +1108,17 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
reqf = I915_READ(GEN6_RPNSWREQ);
- reqf &= ~GEN6_TURBO_DISABLE;
- if (IS_HASWELL(dev) || IS_BROADWELL(dev))
- reqf >>= 24;
- else
- reqf >>= 25;
+ if (IS_GEN9(dev)) {
+ reqf >>= 23;
+ /* Convert to 50 MHZ units from 16.667 MHZ */
+ reqf /= GEN9_FREQ_SCALER;
+ } else {
+ reqf &= ~GEN6_TURBO_DISABLE;
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ reqf >>= 24;
+ else
+ reqf >>= 25;
+ }
reqf = intel_gpu_freq(dev_priv, reqf);
rpmodectl = I915_READ(GEN6_RP_CONTROL);
@@ -1128,7 +1134,10 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
if (IS_HASWELL(dev) || IS_BROADWELL(dev))
cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
- else
+ else if (IS_GEN9(dev)) {
+ cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
+ cagf /= GEN9_FREQ_SCALER;
+ } else
cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
cagf = intel_gpu_freq(dev_priv, cagf);
@@ -1152,7 +1161,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
pm_ier, pm_imr, pm_isr, pm_iir, pm_mask);
seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
seq_printf(m, "Render p-state ratio: %d\n",
- (gt_perf_status & 0xff00) >> 8);
+ (gt_perf_status & (IS_GEN9(dev) ? 0x1ff00 : 0xff00)) >> 8);
seq_printf(m, "Render p-state VID: %d\n",
gt_perf_status & 0xff);
seq_printf(m, "Render p-state limit: %d\n",
--
1.9.2
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