From 8e8c06cd34dbd68d36b0c561b8850478ddc5fb84 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 26 Aug 2013 19:51:01 -0300 Subject: [PATCH] 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: Chris Wilson Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 55ab924..a6f4cb5 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -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); -- 2.7.4