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Commit 8e8c06cd authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
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drm/i915: Report requested frequency alongside current frequency in debugfs 



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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 10603caa

drivers/gpu/drm/i915/i915_debugfs.c

+10 −1
Original line number Diff line number Diff line
@@ -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);