drm/amdgpu: add initial support for sdma v5.0 (v6)

SDMA (System DMA) is a general purpose DMA engine usable
by UMDs for transfers or the kernel for paging or GPUVM
updates.

v1: support basic funcitonalites includes rb, ib, vm,
    copy buffer and trap irq
v2: convert to use new get_vm_pde in emit_vm_flush
v3: retire amdgpu_ttm_set_active_vram_size from sdma v5
v4: retire the redundant hdp_invalidate implementation
v5: squash in updates
v6: some golden regs moved to vbios
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -117,7 +117,8 @@ amdgpu-y += \
 	amdgpu_sdma.o \
 	sdma_v2_4.o \
 	sdma_v3_0.o \
-	sdma_v4_0.o
+	sdma_v4_0.o \
+	sdma_v5_0.o
 
 # add UVD block
 amdgpu-y += \

drivers/gpu/drm/amd/amdgpu/sdma_v5_0.h

+/*
+ * Copyright 2019 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 __SDMA_V5_0_H__
+#define __SDMA_V5_0_H__
+
+enum sdma_v5_0_utcl2_cache_read_policy {
+	CACHE_READ_POLICY_L2__LRU    = 0x00000000,
+	CACHE_READ_POLICY_L2__STREAM = 0x00000001,
+	CACHE_READ_POLICY_L2__NOA    = 0x00000002,
+	CACHE_READ_POLICY_L2__DEFAULT = CACHE_READ_POLICY_L2__NOA,
+};
+
+enum sdma_v5_0_utcl2_cache_write_policy {
+	CACHE_WRITE_POLICY_L2__LRU    = 0x00000000,
+	CACHE_WRITE_POLICY_L2__STREAM = 0x00000001,
+	CACHE_WRITE_POLICY_L2__NOA    = 0x00000002,
+	CACHE_WRITE_POLICY_L2__BYPASS = 0x00000003,
+	CACHE_WRITE_POLICY_L2__DEFAULT = CACHE_WRITE_POLICY_L2__BYPASS,
+};
+
+extern const struct amd_ip_funcs sdma_v5_0_ip_funcs;
+extern const struct amdgpu_ip_block_version sdma_v5_0_ip_block;
+
+#endif /* __SDMA_V5_0_H__ */