gpu: nvgpu: vgpu: support additional notifications

Client notification support is now added for the following:
- stalling and non-stalling GR sema release
- non-stalling FIFO channel intr
- non-stalling CE2 nonblockpipe intr

Bug 200097077

Change-Id: Icd3c076d7880e1c9ef1fcc0fc58eed9f23f39277
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/736064
(cherry picked from commit 0585d1f14d5a5ae1ccde8ccb7b7daa5593b3d1bc)
Reviewed-on: http://git-master/r/759824
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

6 files changed, 87 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/Makefile b/drivers/gpu/nvgpu/Makefile
index 053cdde3..4ae636fa 100644
--- a/drivers/gpu/nvgpu/Makefile
+++ b/drivers/gpu/nvgpu/Makefile
@@ -71,6 +71,7 @@ nvgpu-$(CONFIG_TEGRA_GR_VIRTUALIZATION) += \
         vgpu/ltc_vgpu.o \
         vgpu/gr_vgpu.o \
         vgpu/fifo_vgpu.o \
+        vgpu/ce2_vgpu.o \
         vgpu/mm_vgpu.o \
         vgpu/debug_vgpu.o \
         vgpu/vgpu.o
diff --git a/drivers/gpu/nvgpu/vgpu/ce2_vgpu.c b/drivers/gpu/nvgpu/vgpu/ce2_vgpu.c
new file mode 100644
index 00000000..631461f9
--- /dev/null
+++ b/drivers/gpu/nvgpu/vgpu/ce2_vgpu.c
@@ -0,0 +1,33 @@
+/*
+ * Virtualized GPU CE2
+ *
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "vgpu/vgpu.h"
+
+int vgpu_ce2_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_ce2_nonstall_intr_info *info)
+{
+        gk20a_dbg_fn("");
+
+        switch (info->type) {
+        case TEGRA_VGPU_CE2_NONSTALL_INTR_NONBLOCKPIPE:
+                gk20a_channel_semaphore_wakeup(g);
+                break;
+        default:
+                WARN_ON(1);
+                break;
+        }
+
+        return 0;
+}
diff --git a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
index 23ff8677..84bb3646 100644
--- a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
@@ -566,6 +566,23 @@ int vgpu_fifo_isr(struct gk20a *g, struct tegra_vgpu_fifo_intr_info *info)
         return 0;
 }
 
+int vgpu_fifo_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_fifo_nonstall_intr_info *info)
+{
+        gk20a_dbg_fn("");
+
+        switch (info->type) {
+        case TEGRA_VGPU_FIFO_NONSTALL_INTR_CHANNEL:
+                gk20a_channel_semaphore_wakeup(g);
+                break;
+        default:
+                WARN_ON(1);
+                break;
+        }
+
+        return 0;
+}
+
 void vgpu_init_fifo_ops(struct gpu_ops *gops)
 {
         gops->fifo.bind_channel = vgpu_channel_bind;
diff --git a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
index f6f12c7b..99754cae 100644
--- a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
@@ -803,7 +803,8 @@ int vgpu_gr_isr(struct gk20a *g, struct tegra_vgpu_gr_intr_info *info)
         struct channel_gk20a *ch = &f->channel[info->chid];
 
         gk20a_dbg_fn("");
-        if (info->type != TEGRA_VGPU_GR_INTR_NOTIFY)
+        if (info->type != TEGRA_VGPU_GR_INTR_NOTIFY &&
+                info->type != TEGRA_VGPU_GR_INTR_SEMAPHORE)
                 gk20a_err(dev_from_gk20a(g), "gr intr (%d) on ch %u",
                         info->type, info->chid);
 
@@ -811,6 +812,10 @@ int vgpu_gr_isr(struct gk20a *g, struct tegra_vgpu_gr_intr_info *info)
         case TEGRA_VGPU_GR_INTR_NOTIFY:
                 wake_up(&ch->notifier_wq);
                 break;
+        case TEGRA_VGPU_GR_INTR_SEMAPHORE:
+                gk20a_channel_event(ch);
+                wake_up(&ch->semaphore_wq);
+                break;
         case TEGRA_VGPU_GR_INTR_SEMAPHORE_TIMEOUT:
                 gk20a_set_error_notifier(ch,
                                 NVGPU_CHANNEL_GR_SEMAPHORE_TIMEOUT);
@@ -846,6 +851,23 @@ int vgpu_gr_isr(struct gk20a *g, struct tegra_vgpu_gr_intr_info *info)
         return 0;
 }
 
+int vgpu_gr_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_gr_nonstall_intr_info *info)
+{
+        gk20a_dbg_fn("");
+
+        switch (info->type) {
+        case TEGRA_VGPU_GR_NONSTALL_INTR_SEMAPHORE:
+                gk20a_channel_semaphore_wakeup(g);
+                break;
+        default:
+                WARN_ON(1);
+                break;
+        }
+
+        return 0;
+}
+
 void vgpu_init_gr_ops(struct gpu_ops *gops)
 {
         gops->gr.free_channel_ctx = vgpu_gr_free_channel_ctx;
diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index c998b10b..b16fe47c 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -114,8 +114,15 @@ static int vgpu_intr_thread(void *dev_id)
 
                 if (msg->unit == TEGRA_VGPU_INTR_GR)
                         vgpu_gr_isr(g, &msg->info.gr_intr);
+                else if (msg->unit == TEGRA_VGPU_NONSTALL_INTR_GR)
+                        vgpu_gr_nonstall_isr(g, &msg->info.gr_nonstall_intr);
                 else if (msg->unit == TEGRA_VGPU_INTR_FIFO)
                         vgpu_fifo_isr(g, &msg->info.fifo_intr);
+                else if (msg->unit == TEGRA_VGPU_NONSTALL_INTR_FIFO)
+                        vgpu_fifo_nonstall_isr(g,
+                                        &msg->info.fifo_nonstall_intr);
+                else if (msg->unit == TEGRA_VGPU_NONSTALL_INTR_CE2)
+                        vgpu_ce2_nonstall_isr(g, &msg->info.ce2_nonstall_intr);
 
                 tegra_gr_comm_release(handle);
         }
diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.h b/drivers/gpu/nvgpu/vgpu/vgpu.h
index 1a7ef7ba..d577f32e 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.h
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.h
@@ -27,7 +27,13 @@ int vgpu_probe(struct platform_device *dev);
 int vgpu_remove(struct platform_device *dev);
 u64 vgpu_bar1_map(struct gk20a *g, struct sg_table **sgt, u64 size);
 int vgpu_gr_isr(struct gk20a *g, struct tegra_vgpu_gr_intr_info *info);
+int vgpu_gr_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_gr_nonstall_intr_info *info);
 int vgpu_fifo_isr(struct gk20a *g, struct tegra_vgpu_fifo_intr_info *info);
+int vgpu_fifo_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_fifo_nonstall_intr_info *info);
+int vgpu_ce2_nonstall_isr(struct gk20a *g,
+                        struct tegra_vgpu_ce2_nonstall_intr_info *info);
 void vgpu_init_fifo_ops(struct gpu_ops *gops);
 void vgpu_init_gr_ops(struct gpu_ops *gops);
 void vgpu_init_ltc_ops(struct gpu_ops *gops);