Merge tag 'drm-intel-gt-next-2022-11-03' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Driver Changes:

- Fix for #7306: [Arc A380] white flickering when using arc as a
  secondary gpu (Matt A)
- Add Wa_18017747507 for DG2 (Wayne)
- Avoid spurious WARN on DG1 due to incorrect cache_dirty flag
  (Niranjana, Matt A)
- Corrections to CS timestamp support for Gen5 and earlier (Ville)

- Fix a build error used with clang compiler on hwmon (GG)
- Improvements to LMEM handling with RPM (Anshuman, Matt A)
- Cleanups in dmabuf code (Mike)

- Selftest improvements (Matt A)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y2N11wu175p6qeEN@jlahtine-mobl.ger.corp.intel.com

1 files changed, 33 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
index 3f656d3dba9a..2a6a4ca7fdad 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
@@ -107,7 +107,7 @@ static u32 gen9_read_clock_frequency(struct intel_uncore *uncore)
 	return freq;
 }
 
-static u32 gen5_read_clock_frequency(struct intel_uncore *uncore)
+static u32 gen6_read_clock_frequency(struct intel_uncore *uncore)
 {
 	/*
 	 * PRMs say:
@@ -119,7 +119,27 @@ static u32 gen5_read_clock_frequency(struct intel_uncore *uncore)
 	return 12500000;
 }
 
-static u32 gen2_read_clock_frequency(struct intel_uncore *uncore)
+static u32 gen5_read_clock_frequency(struct intel_uncore *uncore)
+{
+	/*
+	 * 63:32 increments every 1000 ns
+	 * 31:0 mbz
+	 */
+	return 1000000000 / 1000;
+}
+
+static u32 g4x_read_clock_frequency(struct intel_uncore *uncore)
+{
+	/*
+	 * 63:20 increments every 1/4 ns
+	 * 19:0 mbz
+	 *
+	 * -> 63:32 increments every 1024 ns
+	 */
+	return 1000000000 / 1024;
+}
+
+static u32 gen4_read_clock_frequency(struct intel_uncore *uncore)
 {
 	/*
 	 * PRMs say:
@@ -127,8 +147,10 @@ static u32 gen2_read_clock_frequency(struct intel_uncore *uncore)
 	 *     "The value in this register increments once every 16
 	 *      hclks." (through the “Clocking Configuration”
 	 *      (“CLKCFG”) MCHBAR register)
+	 *
+	 * Testing on actual hardware has shown there is no /16.
 	 */
-	return RUNTIME_INFO(uncore->i915)->rawclk_freq * 1000 / 16;
+	return RUNTIME_INFO(uncore->i915)->rawclk_freq * 1000;
 }
 
 static u32 read_clock_frequency(struct intel_uncore *uncore)
@@ -137,10 +159,16 @@ static u32 read_clock_frequency(struct intel_uncore *uncore)
 		return gen11_read_clock_frequency(uncore);
 	else if (GRAPHICS_VER(uncore->i915) >= 9)
 		return gen9_read_clock_frequency(uncore);
-	else if (GRAPHICS_VER(uncore->i915) >= 5)
+	else if (GRAPHICS_VER(uncore->i915) >= 6)
+		return gen6_read_clock_frequency(uncore);
+	else if (GRAPHICS_VER(uncore->i915) == 5)
 		return gen5_read_clock_frequency(uncore);
+	else if (IS_G4X(uncore->i915))
+		return g4x_read_clock_frequency(uncore);
+	else if (GRAPHICS_VER(uncore->i915) == 4)
+		return gen4_read_clock_frequency(uncore);
 	else
-		return gen2_read_clock_frequency(uncore);
+		return 0;
 }
 
 void intel_gt_init_clock_frequency(struct intel_gt *gt)