From: Paulo Zanoni Date: Fri, 1 Aug 2014 21:14:48 +0000 (-0300) Subject: drm/i915: fix i915_frequency_info on BDW X-Git-Tag: v3.18-rc1~44^2~32^2~110 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9dd3c605a395c27afeadbb95cf73cdb35e99e135;p=karo-tx-linux.git drm/i915: fix i915_frequency_info on BDW The GEN6_PM* registers don't exist on BDW anymore, so when we read this file we trigger unclaimed register errors. The equivalent BDW register for PMs is GEN8_GT_I*R(2), so use it. Testcase: igt/pm_rpm/debugfs-read Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 6c82bdaa0822..b2c4cf8a2461 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1030,6 +1030,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused) u32 rpstat, cagf, reqf; u32 rpupei, rpcurup, rpprevup; u32 rpdownei, rpcurdown, rpprevdown; + u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask; int max_freq; /* RPSTAT1 is in the GT power well */ @@ -1067,12 +1068,21 @@ static int i915_frequency_info(struct seq_file *m, void *unused) gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL); mutex_unlock(&dev->struct_mutex); + if (IS_GEN6(dev) || IS_GEN7(dev)) { + pm_ier = I915_READ(GEN6_PMIER); + pm_imr = I915_READ(GEN6_PMIMR); + pm_isr = I915_READ(GEN6_PMISR); + pm_iir = I915_READ(GEN6_PMIIR); + pm_mask = I915_READ(GEN6_PMINTRMSK); + } else { + pm_ier = I915_READ(GEN8_GT_IER(2)); + pm_imr = I915_READ(GEN8_GT_IMR(2)); + pm_isr = I915_READ(GEN8_GT_ISR(2)); + pm_iir = I915_READ(GEN8_GT_IIR(2)); + pm_mask = I915_READ(GEN6_PMINTRMSK); + } seq_printf(m, "PM IER=0x%08x IMR=0x%08x ISR=0x%08x IIR=0x%08x, MASK=0x%08x\n", - I915_READ(GEN6_PMIER), - I915_READ(GEN6_PMIMR), - I915_READ(GEN6_PMISR), - I915_READ(GEN6_PMIIR), - I915_READ(GEN6_PMINTRMSK)); + 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);