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drm/i915: Report requested frequency alongside current frequency in debugfs

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It can be useful to compare at times the current vs requested frequency
of the GPU, so provide the contents of RPNSWREQ alonside CAGF.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2013-08-26 19:51:01 -03:00 committed by Daniel Vetter
parent 10603caacf
commit 8e8c06cd34
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/i915/i915_debugfs.c
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@ -857,7 +857,7 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused)
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);
u32 rpstat, cagf;
u32 rpstat, cagf, reqf;
u32 rpupei, rpcurup, rpprevup;
u32 rpdownei, rpcurdown, rpprevdown;
int max_freq;
@ -869,6 +869,14 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused)
gen6_gt_force_wake_get(dev_priv);
reqf = I915_READ(GEN6_RPNSWREQ);
reqf &= ~GEN6_TURBO_DISABLE;
if (IS_HASWELL(dev))
reqf >>= 24;
else
reqf >>= 25;
reqf *= GT_FREQUENCY_MULTIPLIER;
rpstat = I915_READ(GEN6_RPSTAT1);
rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
rpcurup = I915_READ(GEN6_RP_CUR_UP);
@ -893,6 +901,7 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused)
gt_perf_status & 0xff);
seq_printf(m, "Render p-state limit: %d\n",
rp_state_limits & 0xff);
seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
seq_printf(m, "CAGF: %dMHz\n", cagf);
seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
GEN6_CURICONT_MASK);