We have seen multiple RC6 issues where it is useful to know which global forcewake bits are set. Add this to the 'drpc' debugfs output.
Signed-off-by: Vinay Belgaumkar vinay.belgaumkar@intel.com --- drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c index 90a440865037..2a157ca28dda 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c @@ -96,18 +96,25 @@ static void print_rc6_res(struct seq_file *m, intel_rc6_residency_us(>->rc6, reg)); }
+static u32 mt_fwake_status(struct intel_uncore *uncore) +{ + return intel_uncore_read_fw(uncore, FORCEWAKE_MT); +} + static int vlv_drpc(struct seq_file *m) { struct intel_gt *gt = m->private; struct intel_uncore *uncore = gt->uncore; - u32 rcctl1, pw_status; + u32 rcctl1, pw_status, mt_fwake;
+ mt_fwake = mt_fwake_status(uncore); pw_status = intel_uncore_read(uncore, VLV_GTLC_PW_STATUS); rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
seq_printf(m, "RC6 Enabled: %s\n", str_yes_no(rcctl1 & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1)))); + seq_printf(m, "Multi-threaded Forcewake: 0x%x\n", mt_fwake); seq_printf(m, "Render Power Well: %s\n", (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down"); seq_printf(m, "Media Power Well: %s\n", @@ -124,9 +131,10 @@ static int gen6_drpc(struct seq_file *m) struct intel_gt *gt = m->private; struct drm_i915_private *i915 = gt->i915; struct intel_uncore *uncore = gt->uncore; - u32 gt_core_status, rcctl1, rc6vids = 0; + u32 gt_core_status, mt_fwake, rcctl1, rc6vids = 0; u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;
+ mt_fwake = mt_fwake_status(uncore); gt_core_status = intel_uncore_read_fw(uncore, GEN6_GT_CORE_STATUS);
rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL); @@ -178,6 +186,7 @@ static int gen6_drpc(struct seq_file *m)
seq_printf(m, "Core Power Down: %s\n", str_yes_no(gt_core_status & GEN6_CORE_CPD_STATE_MASK)); + seq_printf(m, "Multi-threaded Forcewake: 0x%x\n", mt_fwake); if (GRAPHICS_VER(i915) >= 9) { seq_printf(m, "Render Power Well: %s\n", (gen9_powergate_status &