Re: [PATCH] drm/i915: Yet another if/else sort of newer to older platforms.

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On Mon, Feb 25, 2019 at 11:11:30AM -0800, Rodrigo Vivi wrote:

No functional change. Just a reorg to match the preferred
behavior.

When rebasing internal branch on top of latest sort I noticed
few more cases that needs to get reordered.

Let's do in a bundle this time and hoping there's no other
missing places.

v2: Check for HSW/BDW ULT before generic IS_HASWELL or
   IS_BROADWELL or it doesn't work as pointed by Ville.
   But also ULT came afterwards anyway.

Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c          | 20 ++++----
drivers/gpu/drm/i915/i915_perf.c         | 50 +++++++++---------
drivers/gpu/drm/i915/intel_cdclk.c       | 38 +++++++-------
drivers/gpu/drm/i915/intel_workarounds.c | 64 ++++++++++++------------
4 files changed, 86 insertions(+), 86 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c6354f6cdbdb..ed48aac1487d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -219,20 +219,20 @@ intel_virt_detect_pch(const struct drm_i915_private *dev_priv)
	 * make an educated guess as to which PCH is really there.
	 */

-	if (IS_GEN(dev_priv, 5))
-		id = INTEL_PCH_IBX_DEVICE_ID_TYPE;
-	else if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
-		id = INTEL_PCH_CPT_DEVICE_ID_TYPE;
+	if (IS_ICELAKE(dev_priv))
+		id = INTEL_PCH_ICP_DEVICE_ID_TYPE;
+	else if (IS_COFFEELAKE(dev_priv) || IS_CANNONLAKE(dev_priv))


if you want to be strict about the order, then this should be:

	else if (IS_CANNONLAKE(dev_priv) || IS_COFFELAKE(dev_priv))


+		id = INTEL_PCH_CNP_DEVICE_ID_TYPE;
+	else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))


ditto


+		id = INTEL_PCH_SPT_DEVICE_ID_TYPE;
	else if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv))
		id = INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
	else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
		id = INTEL_PCH_LPT_DEVICE_ID_TYPE;
-	else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
-		id = INTEL_PCH_SPT_DEVICE_ID_TYPE;
-	else if (IS_COFFEELAKE(dev_priv) || IS_CANNONLAKE(dev_priv))
-		id = INTEL_PCH_CNP_DEVICE_ID_TYPE;
-	else if (IS_ICELAKE(dev_priv))
-		id = INTEL_PCH_ICP_DEVICE_ID_TYPE;
+	else if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
+		id = INTEL_PCH_CPT_DEVICE_ID_TYPE;
+	else if (IS_GEN(dev_priv, 5))
+		id = INTEL_PCH_IBX_DEVICE_ID_TYPE;

	if (id)
		DRM_DEBUG_KMS("Assuming PCH ID %04x\n", id);
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 9ebf99f3d8d3..72a9a35b40e2 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2881,12 +2881,24 @@ void i915_perf_register(struct drm_i915_private *dev_priv)

	sysfs_attr_init(&dev_priv->perf.oa.test_config.sysfs_metric_id.attr);

-	if (IS_HASWELL(dev_priv)) {
-		i915_perf_load_test_config_hsw(dev_priv);
-	} else if (IS_BROADWELL(dev_priv)) {
-		i915_perf_load_test_config_bdw(dev_priv);
-	} else if (IS_CHERRYVIEW(dev_priv)) {
-		i915_perf_load_test_config_chv(dev_priv);
+	if (IS_ICELAKE(dev_priv)) {
+		i915_perf_load_test_config_icl(dev_priv);
+	} else if (IS_CANNONLAKE(dev_priv)) {
+		i915_perf_load_test_config_cnl(dev_priv);
+	} else if (IS_COFFEELAKE(dev_priv)) {
+		if (IS_CFL_GT2(dev_priv))
+			i915_perf_load_test_config_cflgt2(dev_priv);
+		if (IS_CFL_GT3(dev_priv))
+			i915_perf_load_test_config_cflgt3(dev_priv);
+	} else if (IS_GEMINILAKE(dev_priv)) {
+		i915_perf_load_test_config_glk(dev_priv);
+	} else if (IS_KABYLAKE(dev_priv)) {
+		if (IS_KBL_GT2(dev_priv))
+			i915_perf_load_test_config_kblgt2(dev_priv);
+		else if (IS_KBL_GT3(dev_priv))
+			i915_perf_load_test_config_kblgt3(dev_priv);
+	} else if (IS_BROXTON(dev_priv)) {
+		i915_perf_load_test_config_bxt(dev_priv);
	} else if (IS_SKYLAKE(dev_priv)) {
		if (IS_SKL_GT2(dev_priv))
			i915_perf_load_test_config_sklgt2(dev_priv);
@@ -2894,25 +2906,13 @@ void i915_perf_register(struct drm_i915_private *dev_priv)
			i915_perf_load_test_config_sklgt3(dev_priv);
		else if (IS_SKL_GT4(dev_priv))
			i915_perf_load_test_config_sklgt4(dev_priv);
-	} else if (IS_BROXTON(dev_priv)) {
-		i915_perf_load_test_config_bxt(dev_priv);
-	} else if (IS_KABYLAKE(dev_priv)) {
-		if (IS_KBL_GT2(dev_priv))
-			i915_perf_load_test_config_kblgt2(dev_priv);
-		else if (IS_KBL_GT3(dev_priv))
-			i915_perf_load_test_config_kblgt3(dev_priv);
-	} else if (IS_GEMINILAKE(dev_priv)) {
-		i915_perf_load_test_config_glk(dev_priv);
-	} else if (IS_COFFEELAKE(dev_priv)) {
-		if (IS_CFL_GT2(dev_priv))
-			i915_perf_load_test_config_cflgt2(dev_priv);
-		if (IS_CFL_GT3(dev_priv))
-			i915_perf_load_test_config_cflgt3(dev_priv);
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		i915_perf_load_test_config_cnl(dev_priv);
-	} else if (IS_ICELAKE(dev_priv)) {
-		i915_perf_load_test_config_icl(dev_priv);
-	}
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		i915_perf_load_test_config_chv(dev_priv);
+	} else if (IS_BROADWELL(dev_priv)) {
+		i915_perf_load_test_config_bdw(dev_priv);
+	} else if (IS_HASWELL(dev_priv)) {
+		i915_perf_load_test_config_hsw(dev_priv);
+}

	if (dev_priv->perf.oa.test_config.id == 0)
		goto sysfs_error;
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index 26e01a8465af..5d266538036d 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -2744,18 +2744,13 @@ void intel_update_rawclk(struct drm_i915_private *dev_priv)
 */
void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
{
-	if (IS_CHERRYVIEW(dev_priv)) {
-		dev_priv->display.set_cdclk = chv_set_cdclk;
-		dev_priv->display.modeset_calc_cdclk =
-			vlv_modeset_calc_cdclk;
-	} else if (IS_VALLEYVIEW(dev_priv)) {
-		dev_priv->display.set_cdclk = vlv_set_cdclk;
-		dev_priv->display.modeset_calc_cdclk =
-			vlv_modeset_calc_cdclk;
-	} else if (IS_BROADWELL(dev_priv)) {
-		dev_priv->display.set_cdclk = bdw_set_cdclk;
+	if (IS_ICELAKE(dev_priv)) {
+		dev_priv->display.set_cdclk = icl_set_cdclk;
+		dev_priv->display.modeset_calc_cdclk = icl_modeset_calc_cdclk;
+	} else if (IS_CANNONLAKE(dev_priv)) {
+		dev_priv->display.set_cdclk = cnl_set_cdclk;
		dev_priv->display.modeset_calc_cdclk =
-			bdw_modeset_calc_cdclk;
+			cnl_modeset_calc_cdclk;
	} else if (IS_GEN9_LP(dev_priv)) {
		dev_priv->display.set_cdclk = bxt_set_cdclk;
		dev_priv->display.modeset_calc_cdclk =
@@ -2764,23 +2759,28 @@ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
		dev_priv->display.set_cdclk = skl_set_cdclk;
		dev_priv->display.modeset_calc_cdclk =
			skl_modeset_calc_cdclk;
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		dev_priv->display.set_cdclk = cnl_set_cdclk;
+	} else if (IS_BROADWELL(dev_priv)) {
+		dev_priv->display.set_cdclk = bdw_set_cdclk;
		dev_priv->display.modeset_calc_cdclk =
-			cnl_modeset_calc_cdclk;
-	} else if (IS_ICELAKE(dev_priv)) {
-		dev_priv->display.set_cdclk = icl_set_cdclk;
-		dev_priv->display.modeset_calc_cdclk = icl_modeset_calc_cdclk;
+			bdw_modeset_calc_cdclk;
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		dev_priv->display.set_cdclk = chv_set_cdclk;
+		dev_priv->display.modeset_calc_cdclk =
+			vlv_modeset_calc_cdclk;
+	} else if (IS_VALLEYVIEW(dev_priv)) {
+		dev_priv->display.set_cdclk = vlv_set_cdclk;
+		dev_priv->display.modeset_calc_cdclk =
+			vlv_modeset_calc_cdclk;
	}

	if (IS_ICELAKE(dev_priv))
		dev_priv->display.get_cdclk = icl_get_cdclk;
	else if (IS_CANNONLAKE(dev_priv))
		dev_priv->display.get_cdclk = cnl_get_cdclk;
-	else if (IS_GEN9_BC(dev_priv))
-		dev_priv->display.get_cdclk = skl_get_cdclk;
	else if (IS_GEN9_LP(dev_priv))
		dev_priv->display.get_cdclk = bxt_get_cdclk;
+	else if (IS_GEN9_BC(dev_priv))
+		dev_priv->display.get_cdclk = skl_get_cdclk;


no reason to change these...


	else if (IS_BROADWELL(dev_priv))
		dev_priv->display.get_cdclk = bdw_get_cdclk;
	else if (IS_HASWELL(dev_priv))
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 743cf5b00155..3e8138b66191 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -862,26 +862,26 @@ icl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
static void
gt_init_workarounds(struct drm_i915_private *i915, struct i915_wa_list *wal)
{
-	if (INTEL_GEN(i915) < 8)
+	if (IS_ICELAKE(i915))
+		icl_gt_workarounds_init(i915, wal);
+	else if (IS_CANNONLAKE(i915))
+		cnl_gt_workarounds_init(i915, wal);
+	else if (IS_COFFEELAKE(i915))
+		cfl_gt_workarounds_init(i915, wal);
+	else if (IS_GEMINILAKE(i915))
+		glk_gt_workarounds_init(i915, wal);
+	else if (IS_KABYLAKE(i915))
+		kbl_gt_workarounds_init(i915, wal);
+	else if (IS_BROXTON(i915))
+		bxt_gt_workarounds_init(i915, wal);
+	else if (IS_SKYLAKE(i915))
+		skl_gt_workarounds_init(i915, wal);
+	else if (IS_CHERRYVIEW(i915))
		return;
	else if (IS_BROADWELL(i915))
		return;
-	else if (IS_CHERRYVIEW(i915))
+	else if (INTEL_GEN(i915) < 8)
		return;
-	else if (IS_SKYLAKE(i915))
-		skl_gt_workarounds_init(i915, wal);
-	else if (IS_BROXTON(i915))
-		bxt_gt_workarounds_init(i915, wal);
-	else if (IS_KABYLAKE(i915))
-		kbl_gt_workarounds_init(i915, wal);
-	else if (IS_GEMINILAKE(i915))
-		glk_gt_workarounds_init(i915, wal);
-	else if (IS_COFFEELAKE(i915))
-		cfl_gt_workarounds_init(i915, wal);
-	else if (IS_CANNONLAKE(i915))
-		cnl_gt_workarounds_init(i915, wal);
-	else if (IS_ICELAKE(i915))
-		icl_gt_workarounds_init(i915, wal);
	else
		MISSING_CASE(INTEL_GEN(i915));
}
@@ -1063,26 +1063,26 @@ void intel_engine_init_whitelist(struct intel_engine_cs *engine)

	wa_init_start(w, "whitelist");

-	if (INTEL_GEN(i915) < 8)
+	if (IS_ICELAKE(i915))
+		icl_whitelist_build(w);
+	else if (IS_CANNONLAKE(i915))
+		cnl_whitelist_build(w);
+	else if (IS_COFFEELAKE(i915))
+		cfl_whitelist_build(w);
+	else if (IS_GEMINILAKE(i915))
+		glk_whitelist_build(w);
+	else if (IS_KABYLAKE(i915))
+		kbl_whitelist_build(w);
+	else if (IS_BROXTON(i915))
+		bxt_whitelist_build(w);
+	else if (IS_SKYLAKE(i915))
+		skl_whitelist_build(w);
+	else if (IS_CHERRYVIEW(i915))
		return;
	else if (IS_BROADWELL(i915))
		return;
-	else if (IS_CHERRYVIEW(i915))
+	else if (INTEL_GEN(i915) < 8)


make this INTEL_GEN(i915) <= 8) and remove IS_CHERRYVIEW() above?
The meaning would be that "BROADWELL is the only gen8 that has this, the
others and below => do nothing."


I went through each of the if/else chains and did my best to manually
verify them: I didn't find any bug. Comments above are basically
nitpicks.  Your call if you are actually going to change them.

Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>


Lucas De Marchi


		return;
-	else if (IS_SKYLAKE(i915))
-		skl_whitelist_build(w);
-	else if (IS_BROXTON(i915))
-		bxt_whitelist_build(w);
-	else if (IS_KABYLAKE(i915))
-		kbl_whitelist_build(w);
-	else if (IS_GEMINILAKE(i915))
-		glk_whitelist_build(w);
-	else if (IS_COFFEELAKE(i915))
-		cfl_whitelist_build(w);
-	else if (IS_CANNONLAKE(i915))
-		cnl_whitelist_build(w);
-	else if (IS_ICELAKE(i915))
-		icl_whitelist_build(w);
	else
		MISSING_CASE(INTEL_GEN(i915));

--
2.20.1


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