drm/i915/debugfs: reuse max slice/subslices already stored in sseu

Now that we have that information in topology fields, let's just reuse it.

v2: Style tweaks (Tvrtko)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180306122857.27317-3-lionel.g.landwerlin@intel.com

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 229d4d6..bd5f98c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4338,11 +4338,11 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
                                     struct sseu_dev_info *sseu)
 {
        const struct intel_device_info *info = INTEL_INFO(dev_priv);
-       int s_max = 6, ss_max = 4;
        int s, ss;
-       u32 s_reg[s_max], eu_reg[2 * s_max], eu_mask[2];
+       u32 s_reg[info->sseu.max_slices];
+       u32 eu_reg[2 * info->sseu.max_subslices], eu_mask[2];
 
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < info->sseu.max_slices; s++) {
                /*
                 * FIXME: Valid SS Mask respects the spec and read
                 * only valid bits for those registers, excluding reserverd
@@ -4364,7 +4364,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
                     GEN9_PGCTL_SSB_EU210_ACK |
                     GEN9_PGCTL_SSB_EU311_ACK;
 
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < info->sseu.max_slices; s++) {
                if ((s_reg[s] & GEN9_PGCTL_SLICE_ACK) == 0)
                        /* skip disabled slice */
                        continue;
@@ -4372,7 +4372,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
                sseu->slice_mask |= BIT(s);
                sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
 
-               for (ss = 0; ss < ss_max; ss++) {
+               for (ss = 0; ss < info->sseu.max_subslices; ss++) {
                        unsigned int eu_cnt;
 
                        if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
@@ -4392,17 +4392,12 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
 static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
                                    struct sseu_dev_info *sseu)
 {
-       int s_max = 3, ss_max = 4;
+       const struct intel_device_info *info = INTEL_INFO(dev_priv);
        int s, ss;
-       u32 s_reg[s_max], eu_reg[2*s_max], eu_mask[2];
-
-       /* BXT has a single slice and at most 3 subslices. */
-       if (IS_GEN9_LP(dev_priv)) {
-               s_max = 1;
-               ss_max = 3;
-       }
+       u32 s_reg[info->sseu.max_slices];
+       u32 eu_reg[2 * info->sseu.max_subslices], eu_mask[2];
 
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < info->sseu.max_slices; s++) {
                s_reg[s] = I915_READ(GEN9_SLICE_PGCTL_ACK(s));
                eu_reg[2*s] = I915_READ(GEN9_SS01_EU_PGCTL_ACK(s));
                eu_reg[2*s + 1] = I915_READ(GEN9_SS23_EU_PGCTL_ACK(s));
@@ -4417,7 +4412,7 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
                     GEN9_PGCTL_SSB_EU210_ACK |
                     GEN9_PGCTL_SSB_EU311_ACK;
 
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < info->sseu.max_slices; s++) {
                if ((s_reg[s] & GEN9_PGCTL_SLICE_ACK) == 0)
                        /* skip disabled slice */
                        continue;
@@ -4428,7 +4423,7 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
                        sseu->subslice_mask[s] =
                                INTEL_INFO(dev_priv)->sseu.subslice_mask[s];
 
-               for (ss = 0; ss < ss_max; ss++) {
+               for (ss = 0; ss < info->sseu.max_subslices; ss++) {
                        unsigned int eu_cnt;
 
                        if (IS_GEN9_LP(dev_priv)) {

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index b29a35d..14f2c72 100644 (file)
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -308,7 +308,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
                                /* skip disabled subslice */
                                continue;
 
-                       eu_disabled_mask = (eu_disable >> (ss*8)) & eu_mask;
+                       eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
 
                        sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);