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drm/i915/dmc: Print out the DMC mmio register list at fw load time

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To help with debugging print out the mmio list contained in the DMC
firmware. Also highlight the event registers, and whether we're going
to disable them or not.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231211213750.27109-5-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Ville Syrjälä 2023-12-11 23:37:50 +02:00
parent e1a4e3cb3a
commit 5f23cea2d9
1 changed files with 18 additions and 0 deletions
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18
drivers/gpu/drm/i915/display/intel_dmc.c
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@ -432,6 +432,16 @@ static bool is_dmc_evt_ctl_reg(struct drm_i915_private *i915,
return offset >= start && offset < end;
}
static bool is_dmc_evt_htp_reg(struct drm_i915_private *i915,
enum intel_dmc_id dmc_id, i915_reg_t reg)
{
u32 offset = i915_mmio_reg_offset(reg);
u32 start = i915_mmio_reg_offset(DMC_EVT_HTP(i915, dmc_id, 0));
u32 end = i915_mmio_reg_offset(DMC_EVT_HTP(i915, dmc_id, DMC_EVENT_HANDLER_COUNT_GEN12));
return offset >= start && offset < end;
}
static bool disable_dmc_evt(struct drm_i915_private *i915,
enum intel_dmc_id dmc_id,
i915_reg_t reg, u32 data)
@ -713,9 +723,17 @@ static u32 parse_dmc_fw_header(struct intel_dmc *dmc,
return 0;
}
drm_dbg_kms(&i915->drm, "DMC %d:\n", dmc_id);
for (i = 0; i < mmio_count; i++) {
dmc_info->mmioaddr[i] = _MMIO(mmioaddr[i]);
dmc_info->mmiodata[i] = mmiodata[i];
drm_dbg_kms(&i915->drm, " mmio[%d]: 0x%x = 0x%x%s%s\n",
i, mmioaddr[i], mmiodata[i],
is_dmc_evt_ctl_reg(i915, dmc_id, dmc_info->mmioaddr[i]) ? " (EVT_CTL)" :
is_dmc_evt_htp_reg(i915, dmc_id, dmc_info->mmioaddr[i]) ? " (EVT_HTP)" : "",
disable_dmc_evt(i915, dmc_id, dmc_info->mmioaddr[i],
dmc_info->mmiodata[i]) ? " (disabling)" : "");
}
dmc_info->mmio_count = mmio_count;
dmc_info->start_mmioaddr = start_mmioaddr;