gpu: nvgpu: Initialize usermode regs for Volta dGPU

Initialize usermode registers also for Volta GPU behind PCIe.

Change-Id: Id621a74838839e4d98dfd0828c1ea5a0d54baa2d
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1579121
Reviewed-by: David Martinez Nieto <dmartineznie@nvidia.com>
Tested-by: David Martinez Nieto <dmartineznie@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>

3 files changed, 48 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/Makefile b/drivers/gpu/nvgpu/Makefile
index cc304df6..bd703d4b 100644
--- a/drivers/gpu/nvgpu/Makefile
+++ b/drivers/gpu/nvgpu/Makefile
@@ -5,6 +5,7 @@ nvgpu-y += \
         $(nvgpu-t19x)/common/linux/ioctl_tsg_t19x.o \
         $(nvgpu-t19x)/common/linux/io_t19x.o \
         $(nvgpu-t19x)/common/linux/module_t19x.o \
+        $(nvgpu-t19x)/common/linux/pci_t19x.o \
         $(nvgpu-t19x)/gv11b/gv11b.o  \
         $(nvgpu-t19x)/gv11b/mc_gv11b.o  \
         $(nvgpu-t19x)/gv11b/ltc_gv11b.o  \
diff --git a/drivers/gpu/nvgpu/common/linux/pci_t19x.c b/drivers/gpu/nvgpu/common/linux/pci_t19x.c
new file mode 100644
index 00000000..54efd68e
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/linux/pci_t19x.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2017, 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 <nvgpu/types.h>
+
+#include <nvgpu/hw/gv11b/hw_usermode_gv11b.h>
+
+#include "common/linux/os_linux.h"
+
+void t19x_nvgpu_pci_init_support(struct nvgpu_os_linux *l)
+{
+        l->t19x.usermode_regs = l->regs + usermode_cfg0_r();
+        l->t19x.usermode_regs_saved = l->t19x.usermode_regs;
+}
diff --git a/drivers/gpu/nvgpu/include/nvgpu/linux/pci_t19x.h b/drivers/gpu/nvgpu/include/nvgpu/linux/pci_t19x.h
new file mode 100644
index 00000000..c94176cc
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/linux/pci_t19x.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __NVGPU_PCI_T19X_H__
+#define __NVGPU_PCI_T19X_H__
+
+struct nvgpu_os_linux;
+
+void t19x_nvgpu_pci_init_support(struct nvgpu_os_linux *l);
+
+#endif