nvgpu: vgpu: add support to query rop_l2 en masks

Fetch ROP_L2 enable masks in addition to other parameters
when guest sends command to query constants.

Bug 200401223

Change-Id: Ie386f24caaf7acd1155fc3f2a5e8c1f27016970a
Signed-off-by: Aparna Das <aparnad@nvidia.com>
(cherry picked from commit a08bb08fb9fff40138d26e5e9bfa21267ca6b6af)
Reviewed-on: https://git-master.nvidia.com/r/1694911
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 20 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
index a6cb3828..2f1280ac 100644
--- a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
@@ -746,8 +746,23 @@ u32 vgpu_gr_get_max_lts_per_ltc(struct gk20a *g)
 
 u32 *vgpu_gr_rop_l2_en_mask(struct gk20a *g)
 {
-        /* no one use it yet */
-        return NULL;
+        struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
+        u32 i, max_fbps_count = priv->constants.num_fbps;
+
+        gk20a_dbg_fn("");
+
+        if (g->gr.fbp_rop_l2_en_mask == NULL) {
+                g->gr.fbp_rop_l2_en_mask =
+                        nvgpu_kzalloc(g, max_fbps_count * sizeof(u32));
+                if (!g->gr.fbp_rop_l2_en_mask)
+                        return NULL;
+        }
+
+        g->gr.max_fbps_count = max_fbps_count;
+        for (i = 0; i < max_fbps_count; i++)
+                g->gr.fbp_rop_l2_en_mask[i] = priv->constants.l2_en_mask[i];
+
+        return g->gr.fbp_rop_l2_en_mask;
 }
 
 int vgpu_gr_add_zbc(struct gk20a *g, struct gr_gk20a *gr,
@@ -840,6 +855,9 @@ static void vgpu_remove_gr_support(struct gr_gk20a *gr)
 
         nvgpu_kfree(gr->g, gr->gpc_tpc_count);
         gr->gpc_tpc_count = NULL;
+
+        nvgpu_kfree(gr->g, gr->fbp_rop_l2_en_mask);
+        gr->fbp_rop_l2_en_mask = NULL;
 }
 
 static int vgpu_gr_init_gr_setup_sw(struct gk20a *g)