drm/amdgpu: add initial vcn support and decode tests

VCN is the new media block on Raven. Add core support
and the ring and ib tests for decode.
Signed-off-by: Leo Liu <leo.liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -93,6 +93,10 @@ amdgpu-y += \
 	vce_v3_0.o \
 	vce_v4_0.o
 
+# add VCN block
+amdgpu-y += \
+	amdgpu_vcn.o
+
 # add amdkfd interfaces
 amdgpu-y += \
 	 amdgpu_amdkfd.o \

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1180,6 +1180,31 @@ void amdgpu_wb_free_64bit(struct amdgpu_device *adev, u32 wb);
 
 void amdgpu_get_pcie_info(struct amdgpu_device *adev);
 
+/*
+ * VCN
+ */
+#define AMDGPU_VCN_STACK_SIZE		(200*1024)
+#define AMDGPU_VCN_HEAP_SIZE		(256*1024)
+#define AMDGPU_VCN_SESSION_SIZE		(50*1024)
+#define AMDGPU_VCN_FIRMWARE_OFFSET	256
+#define AMDGPU_VCN_MAX_ENC_RINGS	3
+
+struct amdgpu_vcn {
+	struct amdgpu_bo	*vcpu_bo;
+	void			*cpu_addr;
+	uint64_t		gpu_addr;
+	unsigned		fw_version;
+	void			*saved_bo;
+	struct delayed_work	idle_work;
+	const struct firmware	*fw;	/* VCN firmware */
+	struct amdgpu_ring	ring_dec;
+	struct amdgpu_ring	ring_enc[AMDGPU_VCN_MAX_ENC_RINGS];
+	struct amdgpu_irq_src	irq;
+	struct amd_sched_entity entity_dec;
+	struct amd_sched_entity entity_enc;
+	uint32_t                srbm_soft_reset;
+};
+
 /*
  * SDMA
  */
@@ -1572,11 +1597,18 @@ struct amdgpu_device {
 	/* sdma */
 	struct amdgpu_sdma		sdma;
 
-	/* uvd */
-	struct amdgpu_uvd		uvd;
+	union {
+		struct {
+			/* uvd */
+			struct amdgpu_uvd		uvd;
+
+			/* vce */
+			struct amdgpu_vce		vce;
+		};
 
-	/* vce */
-	struct amdgpu_vce		vce;
+		/* vcn */
+		struct amdgpu_vcn		vcn;
+	};
 
 	/* firmwares */
 	struct amdgpu_firmware		firmware;

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

+/*
+ * 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.
+ *
+ */
+
+#ifndef __AMDGPU_VCN_H__
+#define __AMDGPU_VCN_H__
+
+int amdgpu_vcn_sw_init(struct amdgpu_device *adev);
+int amdgpu_vcn_sw_fini(struct amdgpu_device *adev);
+int amdgpu_vcn_suspend(struct amdgpu_device *adev);
+int amdgpu_vcn_resume(struct amdgpu_device *adev);
+void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring);
+void amdgpu_vcn_ring_end_use(struct amdgpu_ring *ring);
+int amdgpu_vcn_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout);
+
+#endif