diff options
| author | Anshuman Gupta <anshuman.gupta@intel.com> | 2019-10-03 13:47:38 +0530 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2019-10-08 11:05:30 +0300 |
| commit | 41286861b4c9abdb4e0b32c6caa0967780e6f803 (patch) | |
| tree | a1d9d47ede5529280fd66752e4f5369f07fe66dd | |
| parent | 1c4d821db919366034dc9ff4c01b4b0da0b8e30f (diff) | |
| download | linux-41286861b4c9abdb4e0b32c6caa0967780e6f803.tar.bz2 | |
drm/i915/tgl: Add DC3CO counter in i915_dmc_info
Adding DC3CO counter in i915_dmc_info debugfs will be
useful for DC3CO validation.
DMC firmware uses DMC_DEBUG3 register as DC3CO counter
register on TGL, as per B.Specs DMC_DEBUG3 is general
purpose register.
v1: comment modification for DMC_DBUG3.
using GEN >= 12 check instead of IS_TIGERLAKE()
to print DMC_DEBUG3 counter value.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003081738.22101-7-anshuman.gupta@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 298a3e879e65..277f31297f29 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2405,6 +2405,13 @@ static int i915_dmc_info(struct seq_file *m, void *unused) if (INTEL_GEN(dev_priv) >= 12) { dc5_reg = TGL_DMC_DEBUG_DC5_COUNT; dc6_reg = TGL_DMC_DEBUG_DC6_COUNT; + /* + * NOTE: DMC_DEBUG3 is a general purpose reg. + * According to B.Specs:49196 DMC f/w reuses DC5/6 counter + * reg for DC3CO debugging and validation, + * but TGL DMC f/w is using DMC_DEBUG3 reg for DC3CO counter. + */ + seq_printf(m, "DC3CO count: %d\n", I915_READ(DMC_DEBUG3)); } else { dc5_reg = IS_BROXTON(dev_priv) ? BXT_CSR_DC3_DC5_COUNT : SKL_CSR_DC3_DC5_COUNT; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index d252ee7803cc..1dc067fc57ab 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7268,6 +7268,8 @@ enum { #define TGL_DMC_DEBUG_DC5_COUNT _MMIO(0x101084) #define TGL_DMC_DEBUG_DC6_COUNT _MMIO(0x101088) +#define DMC_DEBUG3 _MMIO(0x101090) + /* interrupts */ #define DE_MASTER_IRQ_CONTROL (1 << 31) #define DE_SPRITEB_FLIP_DONE (1 << 29) |