Up to now, subslice mask was assumed to be uniform across slices. But
starting with Cannonlake, slices can be asymetric (for example slice0
has different number of subslices as slice1+). This change stores all
subslices masks for all slices rather than having a single mask that
applies to all slices.

Signed-off-by: Lionel Landwerlin <lionel.g.landwer...@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c      |  24 +++--
 drivers/gpu/drm/i915/i915_drv.c          |   2 +-
 drivers/gpu/drm/i915/i915_drv.h          |  23 ++++-
 drivers/gpu/drm/i915/intel_device_info.c | 169 ++++++++++++++++++++++---------
 drivers/gpu/drm/i915/intel_lrc.c         |   2 +-
 drivers/gpu/drm/i915/intel_ringbuffer.h  |   2 +-
 6 files changed, 161 insertions(+), 61 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index df3852c02a35..3cc0f383b058 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4477,7 +4477,7 @@ static void cherryview_sseu_device_status(struct 
drm_i915_private *dev_priv,
                        continue;
 
                sseu->slice_mask = BIT(0);
-               sseu->subslice_mask |= BIT(ss);
+               sseu->subslices_mask[0] |= BIT(ss);
                eu_cnt = ((sig1[ss] & CHV_EU08_PG_ENABLE) ? 0 : 2) +
                         ((sig1[ss] & CHV_EU19_PG_ENABLE) ? 0 : 2) +
                         ((sig1[ss] & CHV_EU210_PG_ENABLE) ? 0 : 2) +
@@ -4524,7 +4524,7 @@ static void gen10_sseu_device_status(struct 
drm_i915_private *dev_priv,
                        continue;
 
                sseu->slice_mask |= BIT(s);
-               sseu->subslice_mask = info->sseu.subslice_mask;
+               sseu->subslices_mask[s] = info->sseu.subslices_mask[s];
 
                for (ss = 0; ss < ss_max; ss++) {
                        unsigned int eu_cnt;
@@ -4579,8 +4579,8 @@ static void gen9_sseu_device_status(struct 
drm_i915_private *dev_priv,
                sseu->slice_mask |= BIT(s);
 
                if (IS_GEN9_BC(dev_priv))
-                       sseu->subslice_mask =
-                               INTEL_INFO(dev_priv)->sseu.subslice_mask;
+                       sseu->subslices_mask[s] =
+                               INTEL_INFO(dev_priv)->sseu.subslices_mask[s];
 
                for (ss = 0; ss < ss_max; ss++) {
                        unsigned int eu_cnt;
@@ -4590,7 +4590,7 @@ static void gen9_sseu_device_status(struct 
drm_i915_private *dev_priv,
                                        /* skip disabled subslice */
                                        continue;
 
-                               sseu->subslice_mask |= BIT(ss);
+                               sseu->subslices_mask[s] |= BIT(ss);
                        }
 
                        eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4612,9 +4612,12 @@ static void broadwell_sseu_device_status(struct 
drm_i915_private *dev_priv,
        sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
 
        if (sseu->slice_mask) {
-               sseu->subslice_mask = INTEL_INFO(dev_priv)->sseu.subslice_mask;
                sseu->eu_per_subslice =
                                INTEL_INFO(dev_priv)->sseu.eu_per_subslice;
+               for (s = 0; s < fls(sseu->slice_mask); s++) {
+                       sseu->subslices_mask[s] =
+                               INTEL_INFO(dev_priv)->sseu.subslices_mask[s];
+               }
                sseu->eu_total = sseu->eu_per_subslice *
                                 sseu_subslice_total(sseu);
 
@@ -4633,6 +4636,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool 
is_available_info,
 {
        struct drm_i915_private *dev_priv = node_to_i915(m->private);
        const char *type = is_available_info ? "Available" : "Enabled";
+       int s;
 
        seq_printf(m, "  %s Slice Mask: %04x\n", type,
                   sseu->slice_mask);
@@ -4640,10 +4644,10 @@ static void i915_print_sseu_info(struct seq_file *m, 
bool is_available_info,
                   hweight8(sseu->slice_mask));
        seq_printf(m, "  %s Subslice Total: %u\n", type,
                   sseu_subslice_total(sseu));
-       seq_printf(m, "  %s Subslice Mask: %04x\n", type,
-                  sseu->subslice_mask);
-       seq_printf(m, "  %s Subslice Per Slice: %u\n", type,
-                  hweight8(sseu->subslice_mask));
+       for (s = 0; s < fls(sseu->slice_mask); s++) {
+               seq_printf(m, "  %s Slice%i Subslice Mask: %04x\n", type,
+                          s, sseu->subslices_mask[s]);
+       }
        seq_printf(m, "  %s EU Total: %u\n", type,
                   sseu->eu_total);
        seq_printf(m, "  %s EU Per Subslice: %u\n", type,
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 11f73b69259b..52f3567de525 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -415,7 +415,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
                        return -ENODEV;
                break;
        case I915_PARAM_SUBSLICE_MASK:
-               value = INTEL_INFO(dev_priv)->sseu.subslice_mask;
+               value = INTEL_INFO(dev_priv)->sseu.subslices_mask[0];
                if (!value)
                        return -ENODEV;
                break;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 13bad5bc1b9f..f8d239d8bfab 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -800,9 +800,12 @@ struct intel_csr {
        func(supports_tv); \
        func(has_ipc);
 
+#define GEN_MAX_SLICES         (6) /* CNL upper bound */
+#define GEN_MAX_SUBSLICES      (7)
+
 struct sseu_dev_info {
        u8 slice_mask;
-       u8 subslice_mask;
+       u8 subslices_mask[GEN_MAX_SLICES];
        u8 eu_total;
        u8 eu_per_subslice;
        u8 min_eu_in_pool;
@@ -811,11 +814,27 @@ struct sseu_dev_info {
        u8 has_slice_pg:1;
        u8 has_subslice_pg:1;
        u8 has_eu_pg:1;
+
+       /* Topology fields */
+       u8 max_slices;
+       u8 max_subslices;
+       u8 max_eus_per_subslice;
+
+       /* We don't have more than 8 eus per subslice at the moment and as we
+        * store eus enabled using bits, no need to multiply by eus per
+        * subslice.
+        */
+       u8 eu_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICES];
 };
 
 static inline unsigned int sseu_subslice_total(const struct sseu_dev_info 
*sseu)
 {
-       return hweight8(sseu->slice_mask) * hweight8(sseu->subslice_mask);
+       unsigned s, total = 0;
+
+       for (s = 0; s < ARRAY_SIZE(sseu->subslices_mask); s++)
+               total += hweight8(sseu->subslices_mask[s]);
+
+       return total;
 }
 
 /* Keep in gen based order, and chronological order within a gen */
diff --git a/drivers/gpu/drm/i915/intel_device_info.c 
b/drivers/gpu/drm/i915/intel_device_info.c
index 405d70124a46..11ceb43ddcee 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -82,22 +82,74 @@ void intel_device_info_dump(struct drm_i915_private 
*dev_priv)
 #undef PRINT_FLAG
 }
 
+static u8 compute_eu_total(const struct sseu_dev_info *sseu)
+{
+       u8 i, total = 0;
+
+       for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++)
+               total += hweight8(sseu->eu_mask[i]);
+
+       return total;
+}
+
 static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
 {
        struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
        const u32 fuse2 = I915_READ(GEN8_FUSE2);
+       int s, ss, eu_mask = 0xff;
+       u32 subslice_mask, eu_en;
 
        sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
                            GEN10_F2_S_ENA_SHIFT;
-       sseu->subslice_mask = (1 << 4) - 1;
-       sseu->subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
-                                GEN10_F2_SS_DIS_SHIFT);
+       sseu->max_slices = 6;
+       sseu->max_subslices = 4;
+       sseu->max_eus_per_subslice = 8;
+
+       subslice_mask = (1 << 4) - 1;
+       subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+                          GEN10_F2_SS_DIS_SHIFT);
+
+       /* Slice0 can have up to 3 subslices, but there are only 2 in
+        * slice1/2.
+        */
+       sseu->subslices_mask[0] = subslice_mask;
+       for (s = 1; s < sseu->max_slices; s++)
+               sseu->subslices_mask[s] = subslice_mask & 0x3;
+
+       /* Slice0 */
+       eu_en = ~I915_READ(GEN8_EU_DISABLE0);
+       for (ss = 0; ss < sseu->max_subslices; ss++)
+               sseu->eu_mask[ss]     = (eu_en >> (8 * ss)) & eu_mask;
+       /* Slice1 */
+       sseu->eu_mask[sseu->max_subslices]         = (eu_en >> 24) & eu_mask;
+       eu_en = ~I915_READ(GEN8_EU_DISABLE1);
+       sseu->eu_mask[sseu->max_subslices + 1]     = eu_en & eu_mask;
+       /* Slice2 */
+       sseu->eu_mask[2 * sseu->max_subslices]     = (eu_en >> 8) & eu_mask;
+       sseu->eu_mask[2 * sseu->max_subslices + 1] = (eu_en >> 16) & eu_mask;
+       /* Slice3 */
+       sseu->eu_mask[3 * sseu->max_subslices]     = (eu_en >> 24) & eu_mask;
+       eu_en = ~I915_READ(GEN8_EU_DISABLE2);
+       sseu->eu_mask[3 * sseu->max_subslices + 1] = eu_en & eu_mask;
+       /* Slice4 */
+       sseu->eu_mask[4 * sseu->max_subslices]     = (eu_en >> 8) & eu_mask;
+       sseu->eu_mask[4 * sseu->max_subslices + 1] = (eu_en >> 16) & eu_mask;
+       /* Slice5 */
+       sseu->eu_mask[5 * sseu->max_subslices]     = (eu_en >> 24) & eu_mask;
+       eu_en = ~I915_READ(GEN10_EU_DISABLE3);
+       sseu->eu_mask[5 * sseu->max_subslices + 1] = eu_en & eu_mask;
+
+       /* Do a second pass where we marked the subslices disabled if all
+        * their eus are off.
+        */
+       for (s = 0; s < sseu->max_slices; s++) {
+               for (ss = 0; ss < sseu->max_subslices; ss++) {
+                       if (sseu->eu_mask[s * sseu->max_subslices + ss] == 0)
+                               sseu->subslices_mask[s] &= ~BIT(ss);
+               }
+       }
 
-       sseu->eu_total = hweight32(~I915_READ(GEN8_EU_DISABLE0));
-       sseu->eu_total += hweight32(~I915_READ(GEN8_EU_DISABLE1));
-       sseu->eu_total += hweight32(~I915_READ(GEN8_EU_DISABLE2));
-       sseu->eu_total += hweight8(~(I915_READ(GEN10_EU_DISABLE3) &
-                                    GEN10_EU_DIS_SS_MASK));
+       sseu->eu_total = compute_eu_total(sseu);
 
        /*
         * CNL is expected to always have a uniform distribution
@@ -118,26 +170,30 @@ static void gen10_sseu_info_init(struct drm_i915_private 
*dev_priv)
 static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
 {
        struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
-       u32 fuse, eu_dis;
+       u32 fuse;
 
        fuse = I915_READ(CHV_FUSE_GT);
 
        sseu->slice_mask = BIT(0);
+       sseu->max_slices = 1;
+       sseu->max_subslices = 2;
+       sseu->max_eus_per_subslice = 8;
 
        if (!(fuse & CHV_FGT_DISABLE_SS0)) {
-               sseu->subslice_mask |= BIT(0);
-               eu_dis = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK |
-                                CHV_FGT_EU_DIS_SS0_R1_MASK);
-               sseu->eu_total += 8 - hweight32(eu_dis);
+               sseu->subslices_mask[0] |= BIT(0);
+               sseu->eu_mask[0] = (fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >> 
CHV_FGT_EU_DIS_SS0_R0_SHIFT;
+               sseu->eu_mask[0] |= ((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >> 
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4;
+               sseu->subslices_mask[0] = 1;
        }
 
        if (!(fuse & CHV_FGT_DISABLE_SS1)) {
-               sseu->subslice_mask |= BIT(1);
-               eu_dis = fuse & (CHV_FGT_EU_DIS_SS1_R0_MASK |
-                                CHV_FGT_EU_DIS_SS1_R1_MASK);
-               sseu->eu_total += 8 - hweight32(eu_dis);
+               sseu->subslices_mask[0] |= BIT(1);
+               sseu->eu_mask[1] = (fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >> 
CHV_FGT_EU_DIS_SS0_R0_SHIFT;
+               sseu->eu_mask[2] |= ((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >> 
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4;
        }
 
+       sseu->eu_total = compute_eu_total(sseu);
+
        /*
         * CHV expected to always have a uniform distribution of EU
         * across subslices.
@@ -159,41 +215,50 @@ static void gen9_sseu_info_init(struct drm_i915_private 
*dev_priv)
 {
        struct intel_device_info *info = mkwrite_device_info(dev_priv);
        struct sseu_dev_info *sseu = &info->sseu;
-       int s_max = 3, ss_max = 4, eu_max = 8;
        int s, ss;
-       u32 fuse2, eu_disable;
+       u32 fuse2, eu_disable, subslice_mask;
        u8 eu_mask = 0xff;
 
        fuse2 = I915_READ(GEN8_FUSE2);
        sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
 
+       /* BXT has a single slice and at most 3 subslices. */
+       sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
+       sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
+       sseu->max_eus_per_subslice = 8;
+
        /*
         * The subslice disable field is global, i.e. it applies
         * to each of the enabled slices.
        */
-       sseu->subslice_mask = (1 << ss_max) - 1;
-       sseu->subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
-                                GEN9_F2_SS_DIS_SHIFT);
+       subslice_mask = (1 << sseu->max_subslices) - 1;
+       subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
+                          GEN9_F2_SS_DIS_SHIFT);
 
        /*
         * Iterate through enabled slices and subslices to
         * count the total enabled EU.
        */
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < sseu->max_slices; s++) {
                if (!(sseu->slice_mask & BIT(s)))
                        /* skip disabled slice */
                        continue;
 
+               sseu->subslices_mask[s] = subslice_mask;
+
                eu_disable = I915_READ(GEN9_EU_DISABLE(s));
-               for (ss = 0; ss < ss_max; ss++) {
+               for (ss = 0; ss < sseu->max_subslices; ss++) {
                        int eu_per_ss;
 
-                       if (!(sseu->subslice_mask & BIT(ss)))
+                       if (!(sseu->subslices_mask[s] & BIT(ss)))
                                /* skip disabled subslice */
                                continue;
 
-                       eu_per_ss = eu_max - hweight8((eu_disable >> (ss*8)) &
-                                                     eu_mask);
+                       sseu->eu_mask[ss + s * sseu->max_subslices] =
+                               ~((eu_disable >> (ss*8)) & eu_mask);
+
+                       eu_per_ss = sseu->max_eus_per_subslice -
+                               hweight8((eu_disable >> (ss*8)) & eu_mask);
 
                        /*
                         * Record which subslice(s) has(have) 7 EUs. we
@@ -202,11 +267,11 @@ static void gen9_sseu_info_init(struct drm_i915_private 
*dev_priv)
                         */
                        if (eu_per_ss == 7)
                                sseu->subslice_7eu[s] |= BIT(ss);
-
-                       sseu->eu_total += eu_per_ss;
                }
        }
 
+       sseu->eu_total = compute_eu_total(sseu);
+
        /*
         * SKL is expected to always have a uniform distribution
         * of EU across subslices with the exception that any one
@@ -232,8 +297,8 @@ static void gen9_sseu_info_init(struct drm_i915_private 
*dev_priv)
        sseu->has_eu_pg = sseu->eu_per_subslice > 2;
 
        if (IS_GEN9_LP(dev_priv)) {
-#define IS_SS_DISABLED(ss)     (!(sseu->subslice_mask & BIT(ss)))
-               info->has_pooled_eu = hweight8(sseu->subslice_mask) == 3;
+#define IS_SS_DISABLED(ss)     (!(sseu->subslices_mask[0] & BIT(ss)))
+               info->has_pooled_eu = hweight8(sseu->subslices_mask[0]) == 3;
 
                sseu->min_eu_in_pool = 0;
                if (info->has_pooled_eu) {
@@ -251,19 +316,22 @@ static void gen9_sseu_info_init(struct drm_i915_private 
*dev_priv)
 static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
 {
        struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
-       const int s_max = 3, ss_max = 3, eu_max = 8;
        int s, ss;
-       u32 fuse2, eu_disable[3]; /* s_max */
+       u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */
 
        fuse2 = I915_READ(GEN8_FUSE2);
        sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
+       sseu->max_slices = 3;
+       sseu->max_subslices = 3;
+       sseu->max_eus_per_subslice = 8;
+
        /*
         * The subslice disable field is global, i.e. it applies
         * to each of the enabled slices.
         */
-       sseu->subslice_mask = GENMASK(ss_max - 1, 0);
-       sseu->subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
-                                GEN8_F2_SS_DIS_SHIFT);
+       subslice_mask = GENMASK(sseu->max_subslices - 1, 0);
+       subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
+                          GEN8_F2_SS_DIS_SHIFT);
 
        eu_disable[0] = I915_READ(GEN8_EU_DISABLE0) & GEN8_EU_DIS0_S0_MASK;
        eu_disable[1] = (I915_READ(GEN8_EU_DISABLE0) >> GEN8_EU_DIS0_S1_SHIFT) |
@@ -277,30 +345,36 @@ static void broadwell_sseu_info_init(struct 
drm_i915_private *dev_priv)
         * Iterate through enabled slices and subslices to
         * count the total enabled EU.
         */
-       for (s = 0; s < s_max; s++) {
+       for (s = 0; s < sseu->max_slices; s++) {
                if (!(sseu->slice_mask & BIT(s)))
                        /* skip disabled slice */
                        continue;
 
-               for (ss = 0; ss < ss_max; ss++) {
+               sseu->subslices_mask[s] = subslice_mask;
+
+               for (ss = 0; ss < sseu->max_subslices; ss++) {
                        u32 n_disabled;
 
-                       if (!(sseu->subslice_mask & BIT(ss)))
+                       if (!(sseu->subslices_mask[ss] & BIT(ss)))
                                /* skip disabled subslice */
                                continue;
 
-                       n_disabled = hweight8(eu_disable[s] >> (ss * eu_max));
+                       sseu->eu_mask[ss + s * sseu->max_subslices] =
+                               ~(eu_disable[s] >>
+                                 (ss * sseu->max_eus_per_subslice));
+                       n_disabled = hweight8(eu_disable[s] >>
+                                             (ss * 
sseu->max_eus_per_subslice));
 
                        /*
                         * Record which subslices have 7 EUs.
                         */
-                       if (eu_max - n_disabled == 7)
+                       if (sseu->max_eus_per_subslice - n_disabled == 7)
                                sseu->subslice_7eu[s] |= 1 << ss;
-
-                       sseu->eu_total += eu_max - n_disabled;
                }
        }
 
+       sseu->eu_total = compute_eu_total(sseu);
+
        /*
         * BDW is expected to always have a uniform distribution of EU across
         * subslices with the exception that any one EU in any one subslice may
@@ -437,6 +511,7 @@ void intel_device_info_runtime_init(struct drm_i915_private 
*dev_priv)
 {
        struct intel_device_info *info = mkwrite_device_info(dev_priv);
        enum pipe pipe;
+       int s;
 
        if (INTEL_GEN(dev_priv) >= 10) {
                for_each_pipe(dev_priv, pipe)
@@ -548,9 +623,11 @@ void intel_device_info_runtime_init(struct 
drm_i915_private *dev_priv)
        DRM_DEBUG_DRIVER("slice total: %u\n", hweight8(info->sseu.slice_mask));
        DRM_DEBUG_DRIVER("subslice total: %u\n",
                         sseu_subslice_total(&info->sseu));
-       DRM_DEBUG_DRIVER("subslice mask %04x\n", info->sseu.subslice_mask);
-       DRM_DEBUG_DRIVER("subslice per slice: %u\n",
-                        hweight8(info->sseu.subslice_mask));
+       for (s = 0; s < ARRAY_SIZE(info->sseu.subslices_mask); s++) {
+               DRM_DEBUG_DRIVER("subslice mask %04x\n", 
info->sseu.subslices_mask[s]);
+               DRM_DEBUG_DRIVER("subslice per slice: %u\n",
+                                hweight8(info->sseu.subslices_mask[s]));
+       }
        DRM_DEBUG_DRIVER("EU total: %u\n", info->sseu.eu_total);
        DRM_DEBUG_DRIVER("EU per subslice: %u\n", info->sseu.eu_per_subslice);
        DRM_DEBUG_DRIVER("has slice power gating: %s\n",
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index be6c39adebdf..8a9ea083de21 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -2063,7 +2063,7 @@ make_rpcs(struct drm_i915_private *dev_priv)
 
        if (INTEL_INFO(dev_priv)->sseu.has_subslice_pg) {
                rpcs |= GEN8_RPCS_SS_CNT_ENABLE;
-               rpcs |= hweight8(INTEL_INFO(dev_priv)->sseu.subslice_mask) <<
+               rpcs |= hweight8(INTEL_INFO(dev_priv)->sseu.subslices_mask[0]) 
<<
                        GEN8_RPCS_SS_CNT_SHIFT;
                rpcs |= GEN8_RPCS_ENABLE;
        }
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h 
b/drivers/gpu/drm/i915/intel_ringbuffer.h
index f867aa6c31fc..5f96533e5341 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -99,7 +99,7 @@ hangcheck_action_to_str(const enum 
intel_engine_hangcheck_action a)
 
 #define instdone_subslice_mask(dev_priv__) \
        (INTEL_GEN(dev_priv__) == 7 ? \
-        1 : INTEL_INFO(dev_priv__)->sseu.subslice_mask)
+        1 : INTEL_INFO(dev_priv__)->sseu.subslices_mask[0])
 
 #define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
        for ((slice__) = 0, (subslice__) = 0; \
-- 
2.15.0

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