[PATCH 07/23] drm/amdgpu: create new directory for GPU virtualization

[Xiangliang Yu]

Create new directory for GPU virtualization and name it with
marketing name, so it will easy to mantainer all realted virtual
code and make it independent so that will not affect other parts.

And create new pointer and interface to connect virtualization
code with amdgpu core code.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h      |   2 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |   3 +-
 drivers/gpu/drm/amd/mxgpu/amd_mxgpu.c    | 104 +++++++++++++++++++++++++++++++
 drivers/gpu/drm/amd/mxgpu/amd_mxgpu.h    |  37 +++++++++++
 4 files changed, 145 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/amd/mxgpu/amd_mxgpu.c
 create mode 100644 drivers/gpu/drm/amd/mxgpu/amd_mxgpu.h

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 25a3a2a..b0a8d8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1511,6 +1511,8 @@ struct amdgpu_device {
 	spinlock_t			gtt_list_lock;
 	struct list_head                gtt_list;
 
+	/* GPU virtualization */
+	void				*priv_data;
 };
 
 static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_bo_device *bdev)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index 2c37a37..8ee70f8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -54,4 +54,5 @@ static inline bool is_virtual_machine(void)
 #endif
 }
 
-#endif
\ No newline at end of file
+int amd_xgpu_set_ip_blocks(struct amdgpu_device *adev);
+#endif
diff --git a/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.c b/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.c
new file mode 100644
index 0000000..72469e2
--- /dev/null
+++ b/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Xiangliang.Yu at amd.com
+ *
+ */
+#include "amd_mxgpu.h"
+
+int amd_xgpu_alloc(struct amdgpu_device *adev)
+{
+	struct amd_xgpu *xgpu = NULL;
+
+	if (!adev->priv_data) {
+		xgpu = kzalloc(sizeof(struct amd_xgpu), GFP_KERNEL);
+		if (!xgpu)
+			goto error;
+
+		adev->priv_data = xgpu;
+	}
+
+	xgpu->adev = adev;
+	mutex_init(&xgpu->lock);
+
+	return 0;
+
+error:
+	DRM_ERROR("xgpu: failed to allocate xgpu data.\n");
+	return -ENOMEM;
+}
+
+void amd_xgpu_free(struct amd_xgpu *xgpu)
+{
+	struct amdgpu_device *adev = xgpu->adev;
+
+	kfree(xgpu);
+	adev->priv_data = NULL;
+}
+
+static int amd_xgpu_init_ip_blocks(struct amdgpu_device *adev)
+{
+	int r = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_TONGA:
+	case CHIP_FIJI:
+		/* add IP blocks*/
+		break;
+	default:
+		DRM_ERROR("Does not support this chip.\n");
+		r = -ENODEV;
+		break;
+	}
+
+	return r;
+}
+
+static void amd_xgpu_init_default_setting(struct amdgpu_device *adev)
+{
+	/* virtual display setting */
+	adev->mode_info.num_crtc = 1;
+	/* don't need dc */
+	amdgpu_dc = 0;
+	/* disable dpm */
+	amdgpu_dpm = 0;
+}
+
+/*
+ * tell amdgpu IP block info of VF
+ */
+int amd_xgpu_set_ip_blocks(struct amdgpu_device *adev)
+{
+	int r = 0;
+
+	if (!is_virtual_machine()) {
+		DRM_ERROR("Host OS can't support VF device.\n");
+		return -EPERM;
+	}
+
+	r = amd_xgpu_init_ip_blocks(adev);
+	if (r)
+		return r;
+
+	amd_xgpu_init_default_setting(adev);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.h b/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.h
new file mode 100644
index 0000000..6ab13bc
--- /dev/null
+++ b/drivers/gpu/drm/amd/mxgpu/amd_mxgpu.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Xiangliang.Yu at amd.com
+ */
+#ifndef __AMDGPU_XGPU_H__
+#define __AMDGPU_XGPU_H__
+
+#include "amdgpu.h"
+
+struct amd_xgpu {
+	struct amdgpu_device	*adev;
+	struct mutex		lock;
+	u32			reg_val_offs;
+};
+
+extern int amd_xgpu_alloc(struct amdgpu_device *adev);
+extern void amd_xgpu_free(struct amd_xgpu *xgpu);
+#endif
-- 
2.7.4